New version : 2018.3.4

The following changes fixes a case for me where I hear the sound change levels up and down for each pause un-pause cycle.
Patch provided by daniel.c.wickstrom@gmail.com.

.gitignore

@@ -1,6 +1,6 @@
+.*
+*~
 Makefile
-INSTALL
-SimGear.spec
 *.o
 lib*.a
 .*.swp
@@ -12,5 +12,6 @@ CPackSourceConfig.cmake
 cmake_uninstall.cmake
 CTestTestfile.cmake
 install_manifest.txt
-build
+build*
 Build
+CMakeLists.txt.user

3rdparty/CMakeLists.txt

@@ -0,0 +1,7 @@
+if (NOT SYSTEM_EXPAT)
+	add_subdirectory(expat)
+endif()
+
+if (ENABLE_DNS AND NOT SYSTEM_UDNS)
+	add_subdirectory(udns)
+endif()

3rdparty/expat/CMakeLists.txt

@@ -0,0 +1,33 @@
+
+configure_file (
+    "${PROJECT_SOURCE_DIR}/3rdparty/expat/expat_config_cmake.in"
+    "${PROJECT_BINARY_DIR}/3rdparty/expat/expat_config.h"
+)
+
+set(expat_sources 
+	asciitab.h
+        hashtable.h
+        iasciitab.h
+        latin1tab.h
+        nametab.h
+        utf8tab.h
+        xmldef.h
+        xmlparse.h
+        xmlrole.h
+        xmltok.h
+        xmltok_impl.h
+        hashtable.c
+        xmlparse.c
+        xmlrole.c
+        xmltok.c
+        internal.h
+        ascii.h
+        sg_expat.h
+        sg_expat_external.h 
+	)
+
+foreach(s ${expat_sources})
+	set_property(GLOBAL
+		APPEND PROPERTY LOCAL_EXPAT_SOURCES 
+        "${CMAKE_CURRENT_SOURCE_DIR}/${s}")
+endforeach()

3rdparty/expat/Expat.COPYING

@@ -0,0 +1,22 @@
+Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
+                               and Clark Cooper
+Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006 Expat maintainers.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

3rdparty/expat/ascii.h

@@ -0,0 +1,92 @@
+/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
+   See the file COPYING for copying permission.
+*/
+
+#define ASCII_A 0x41
+#define ASCII_B 0x42
+#define ASCII_C 0x43
+#define ASCII_D 0x44
+#define ASCII_E 0x45
+#define ASCII_F 0x46
+#define ASCII_G 0x47
+#define ASCII_H 0x48
+#define ASCII_I 0x49
+#define ASCII_J 0x4A
+#define ASCII_K 0x4B
+#define ASCII_L 0x4C
+#define ASCII_M 0x4D
+#define ASCII_N 0x4E
+#define ASCII_O 0x4F
+#define ASCII_P 0x50
+#define ASCII_Q 0x51
+#define ASCII_R 0x52
+#define ASCII_S 0x53
+#define ASCII_T 0x54
+#define ASCII_U 0x55
+#define ASCII_V 0x56
+#define ASCII_W 0x57
+#define ASCII_X 0x58
+#define ASCII_Y 0x59
+#define ASCII_Z 0x5A
+
+#define ASCII_a 0x61
+#define ASCII_b 0x62
+#define ASCII_c 0x63
+#define ASCII_d 0x64
+#define ASCII_e 0x65
+#define ASCII_f 0x66
+#define ASCII_g 0x67
+#define ASCII_h 0x68
+#define ASCII_i 0x69
+#define ASCII_j 0x6A
+#define ASCII_k 0x6B
+#define ASCII_l 0x6C
+#define ASCII_m 0x6D
+#define ASCII_n 0x6E
+#define ASCII_o 0x6F
+#define ASCII_p 0x70
+#define ASCII_q 0x71
+#define ASCII_r 0x72
+#define ASCII_s 0x73
+#define ASCII_t 0x74
+#define ASCII_u 0x75
+#define ASCII_v 0x76
+#define ASCII_w 0x77
+#define ASCII_x 0x78
+#define ASCII_y 0x79
+#define ASCII_z 0x7A
+
+#define ASCII_0 0x30
+#define ASCII_1 0x31
+#define ASCII_2 0x32
+#define ASCII_3 0x33
+#define ASCII_4 0x34
+#define ASCII_5 0x35
+#define ASCII_6 0x36
+#define ASCII_7 0x37
+#define ASCII_8 0x38
+#define ASCII_9 0x39
+
+#define ASCII_TAB 0x09
+#define ASCII_SPACE 0x20
+#define ASCII_EXCL 0x21
+#define ASCII_QUOT 0x22
+#define ASCII_AMP 0x26
+#define ASCII_APOS 0x27
+#define ASCII_MINUS 0x2D
+#define ASCII_PERIOD 0x2E
+#define ASCII_COLON 0x3A
+#define ASCII_SEMI 0x3B
+#define ASCII_LT 0x3C
+#define ASCII_EQUALS 0x3D
+#define ASCII_GT 0x3E
+#define ASCII_LSQB 0x5B
+#define ASCII_RSQB 0x5D
+#define ASCII_UNDERSCORE 0x5F
+#define ASCII_LPAREN 0x28
+#define ASCII_RPAREN 0x29
+#define ASCII_FF 0x0C
+#define ASCII_SLASH 0x2F
+#define ASCII_HASH 0x23
+#define ASCII_PIPE 0x7C
+#define ASCII_COMMA 0x2C

3rdparty/expat/expat_config_cmake.in

@@ -0,0 +1,41 @@
+
+#ifndef EXPAT_CONFIG_H
+#define EXPAT_CONFIG_H
+
+#cmakedefine HAVE_WINDOWS_H
+
+#ifdef HAVE_WINDOWS_H
+    #define WIN32_LEAN_AND_MEAN
+    #include <windows.h>
+    #undef WIN32_LEAN_AND_MEAN
+#endif
+
+/* 1234 = LIL_ENDIAN, 4321 = BIGENDIAN */
+#define BYTEORDER  1234
+
+/* Define to 1 if you have the `bcopy' function. */
+#cmakedefine HAVE_BCOPY
+
+/* Define to 1 if you have the `memmove' function. */
+#define HAVE_MEMMOVE
+
+/* Define to 1 if you have a working `mmap' system call. */
+#cmakedefine HAVE_MMAP
+
+/* Define to 1 if you have the <unistd.h> header file. */
+#cmakedefine HAVE_UNISTD_H
+
+/* whether byteorder is bigendian */
+#undef WORDS_BIGENDIAN
+
+/* Define to specify how much context to retain around the current parse
+   point. */
+#define XML_CONTEXT_BYTES 1024
+
+/* Define to make parameter entity parsing functionality available. */
+#define XML_DTD
+
+/* Define to make XML Namespaces functionality available. */
+#define XML_NS
+
+#endif /* ifndef EXPAT_CONFIG_H */

3rdparty/expat/internal.h

@@ -0,0 +1,73 @@
+/* internal.h
+
+   Internal definitions used by Expat.  This is not needed to compile
+   client code.
+
+   The following calling convention macros are defined for frequently
+   called functions:
+
+   FASTCALL    - Used for those internal functions that have a simple
+                 body and a low number of arguments and local variables.
+
+   PTRCALL     - Used for functions called though function pointers.
+
+   PTRFASTCALL - Like PTRCALL, but for low number of arguments.
+
+   inline      - Used for selected internal functions for which inlining
+                 may improve performance on some platforms.
+
+   Note: Use of these macros is based on judgement, not hard rules,
+         and therefore subject to change.
+*/
+
+#if defined(__GNUC__) && defined(__i386__) && !defined(__MINGW32__)
+/* We'll use this version by default only where we know it helps.
+
+   regparm() generates warnings on Solaris boxes.   See SF bug #692878.
+
+   Instability reported with egcs on a RedHat Linux 7.3.
+   Let's comment out:
+   #define FASTCALL __attribute__((stdcall, regparm(3)))
+   and let's try this:
+*/
+#define FASTCALL __attribute__((regparm(3)))
+#define PTRFASTCALL __attribute__((regparm(3)))
+#endif
+
+/* Using __fastcall seems to have an unexpected negative effect under
+   MS VC++, especially for function pointers, so we won't use it for
+   now on that platform. It may be reconsidered for a future release
+   if it can be made more effective.
+   Likely reason: __fastcall on Windows is like stdcall, therefore
+   the compiler cannot perform stack optimizations for call clusters.
+*/
+
+/* Make sure all of these are defined if they aren't already. */
+
+#ifndef FASTCALL
+#define FASTCALL
+#endif
+
+#ifndef PTRCALL
+#define PTRCALL
+#endif
+
+#ifndef PTRFASTCALL
+#define PTRFASTCALL
+#endif
+
+#ifndef XML_MIN_SIZE
+#if !defined(__cplusplus) && !defined(inline)
+#ifdef __GNUC__
+#define inline __inline
+#endif /* __GNUC__ */
+#endif
+#endif /* XML_MIN_SIZE */
+
+#ifdef __cplusplus
+#define inline inline
+#else
+#ifndef inline
+#define inline
+#endif
+#endif

3rdparty/expat/sg_expat_external.h

@@ -0,0 +1,115 @@
+/* Copyright (c) 1998, 1999, 2000 Thai Open Source Software Center Ltd
+   See the file COPYING for copying permission.
+*/
+
+#ifndef Expat_External_INCLUDED
+#define Expat_External_INCLUDED 1
+
+/* External API definitions */
+
+#if defined(_MSC_EXTENSIONS) && !defined(__BEOS__) && !defined(__CYGWIN__)
+#define XML_USE_MSC_EXTENSIONS 1
+#endif
+
+/* Expat tries very hard to make the API boundary very specifically
+   defined.  There are two macros defined to control this boundary;
+   each of these can be defined before including this header to
+   achieve some different behavior, but doing so it not recommended or
+   tested frequently.
+
+   XMLCALL    - The calling convention to use for all calls across the
+                "library boundary."  This will default to cdecl, and
+                try really hard to tell the compiler that's what we
+                want.
+
+   XMLIMPORT  - Whatever magic is needed to note that a function is
+                to be imported from a dynamically loaded library
+                (.dll, .so, or .sl, depending on your platform).
+
+   The XMLCALL macro was added in Expat 1.95.7.  The only one which is
+   expected to be directly useful in client code is XMLCALL.
+
+   Note that on at least some Unix versions, the Expat library must be
+   compiled with the cdecl calling convention as the default since
+   system headers may assume the cdecl convention.
+*/
+#ifndef XMLCALL
+#if defined(_MSC_VER)
+#define XMLCALL __cdecl
+#elif defined(__GNUC__) && defined(__i386) && !defined(__INTEL_COMPILER)
+#define XMLCALL __attribute__((cdecl))
+#else
+/* For any platform which uses this definition and supports more than
+   one calling convention, we need to extend this definition to
+   declare the convention used on that platform, if it's possible to
+   do so.
+
+   If this is the case for your platform, please file a bug report
+   with information on how to identify your platform via the C
+   pre-processor and how to specify the same calling convention as the
+   platform's malloc() implementation.
+*/
+#define XMLCALL
+#endif
+#endif  /* not defined XMLCALL */
+
+
+#if !defined(XML_STATIC) && !defined(XMLIMPORT)
+#ifndef XML_BUILDING_EXPAT
+/* using Expat from an application */
+
+#ifdef XML_USE_MSC_EXTENSIONS
+#define XMLIMPORT __declspec(dllimport)
+#endif
+
+#endif
+#endif  /* not defined XML_STATIC */
+
+
+/* If we didn't define it above, define it away: */
+#ifndef XMLIMPORT
+#define XMLIMPORT
+#endif
+
+
+#define XMLPARSEAPI(type) XMLIMPORT type XMLCALL
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef XML_UNICODE_WCHAR_T
+#define XML_UNICODE
+#endif
+
+#ifdef XML_UNICODE     /* Information is UTF-16 encoded. */
+#ifdef XML_UNICODE_WCHAR_T
+typedef wchar_t XML_Char;
+typedef wchar_t XML_LChar;
+#else
+typedef unsigned short XML_Char;
+typedef char XML_LChar;
+#endif /* XML_UNICODE_WCHAR_T */
+#else                  /* Information is UTF-8 encoded. */
+typedef char XML_Char;
+typedef char XML_LChar;
+#endif /* XML_UNICODE */
+
+#ifdef XML_LARGE_SIZE  /* Use large integers for file/stream positions. */
+#if defined(XML_USE_MSC_EXTENSIONS) && _MSC_VER < 1400
+typedef __int64 XML_Index; 
+typedef unsigned __int64 XML_Size;
+#else
+typedef long long XML_Index;
+typedef unsigned long long XML_Size;
+#endif
+#else
+typedef long XML_Index;
+typedef unsigned long XML_Size;
+#endif /* XML_LARGE_SIZE */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not Expat_External_INCLUDED */

3rdparty/expat/xmlrole.h

@@ -1,36 +1,16 @@
-/*
-The contents of this file are subject to the Mozilla Public License
-Version 1.1 (the "License"); you may not use this file except in
-compliance with the License. You may obtain a copy of the License at
-http://www.mozilla.org/MPL/
-
-Software distributed under the License is distributed on an "AS IS"
-basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
-License for the specific language governing rights and limitations
-under the License.
-
-The Original Code is expat.
-
-The Initial Developer of the Original Code is James Clark.
-Portions created by James Clark are Copyright (C) 1998, 1999
-James Clark. All Rights Reserved.
-
-Contributor(s):
-
-Alternatively, the contents of this file may be used under the terms
-of the GNU General Public License (the "GPL"), in which case the
-provisions of the GPL are applicable instead of those above.  If you
-wish to allow use of your version of this file only under the terms of
-the GPL and not to allow others to use your version of this file under
-the MPL, indicate your decision by deleting the provisions above and
-replace them with the notice and other provisions required by the
-GPL. If you do not delete the provisions above, a recipient may use
-your version of this file under either the MPL or the GPL.
+/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
+   See the file COPYING for copying permission.
 */
 
 #ifndef XmlRole_INCLUDED
 #define XmlRole_INCLUDED 1
 
+#ifdef __VMS
+/*      0        1         2         3      0        1         2         3
+        1234567890123456789012345678901     1234567890123456789012345678901 */
+#define XmlPrologStateInitExternalEntity    XmlPrologStateInitExternalEnt
+#endif
+
 #include "xmltok.h"
 
 #ifdef __cplusplus
@@ -42,16 +22,21 @@ enum {
   XML_ROLE_NONE = 0,
   XML_ROLE_XML_DECL,
   XML_ROLE_INSTANCE_START,
+  XML_ROLE_DOCTYPE_NONE,
   XML_ROLE_DOCTYPE_NAME,
   XML_ROLE_DOCTYPE_SYSTEM_ID,
   XML_ROLE_DOCTYPE_PUBLIC_ID,
+  XML_ROLE_DOCTYPE_INTERNAL_SUBSET,
   XML_ROLE_DOCTYPE_CLOSE,
   XML_ROLE_GENERAL_ENTITY_NAME,
   XML_ROLE_PARAM_ENTITY_NAME,
+  XML_ROLE_ENTITY_NONE,
   XML_ROLE_ENTITY_VALUE,
   XML_ROLE_ENTITY_SYSTEM_ID,
   XML_ROLE_ENTITY_PUBLIC_ID,
+  XML_ROLE_ENTITY_COMPLETE,
   XML_ROLE_ENTITY_NOTATION_NAME,
+  XML_ROLE_NOTATION_NONE,
   XML_ROLE_NOTATION_NAME,
   XML_ROLE_NOTATION_SYSTEM_ID,
   XML_ROLE_NOTATION_NO_SYSTEM_ID,
@@ -67,11 +52,13 @@ enum {
   XML_ROLE_ATTRIBUTE_TYPE_NMTOKENS,
   XML_ROLE_ATTRIBUTE_ENUM_VALUE,
   XML_ROLE_ATTRIBUTE_NOTATION_VALUE,
+  XML_ROLE_ATTLIST_NONE,
   XML_ROLE_ATTLIST_ELEMENT_NAME,
   XML_ROLE_IMPLIED_ATTRIBUTE_VALUE,
   XML_ROLE_REQUIRED_ATTRIBUTE_VALUE,
   XML_ROLE_DEFAULT_ATTRIBUTE_VALUE,
   XML_ROLE_FIXED_ATTRIBUTE_VALUE,
+  XML_ROLE_ELEMENT_NONE,
   XML_ROLE_ELEMENT_NAME,
   XML_ROLE_CONTENT_ANY,
   XML_ROLE_CONTENT_EMPTY,
@@ -87,19 +74,35 @@ enum {
   XML_ROLE_CONTENT_ELEMENT_REP,
   XML_ROLE_CONTENT_ELEMENT_OPT,
   XML_ROLE_CONTENT_ELEMENT_PLUS,
+  XML_ROLE_PI,
+  XML_ROLE_COMMENT,
+#ifdef XML_DTD
+  XML_ROLE_TEXT_DECL,
+  XML_ROLE_IGNORE_SECT,
+  XML_ROLE_INNER_PARAM_ENTITY_REF,
+#endif /* XML_DTD */
   XML_ROLE_PARAM_ENTITY_REF
 };
 
 typedef struct prolog_state {
-  int (*handler)(struct prolog_state *state,
-	         int tok,
-		 const char *ptr,
-		 const char *end,
-		 const ENCODING *enc);
+  int (PTRCALL *handler) (struct prolog_state *state,
+                          int tok,
+                          const char *ptr,
+                          const char *end,
+                          const ENCODING *enc);
   unsigned level;
+  int role_none;
+#ifdef XML_DTD
+  unsigned includeLevel;
+  int documentEntity;
+  int inEntityValue;
+#endif /* XML_DTD */
 } PROLOG_STATE;
 
-void XMLTOKAPI XmlPrologStateInit(PROLOG_STATE *);
+void XmlPrologStateInit(PROLOG_STATE *);
+#ifdef XML_DTD
+void XmlPrologStateInitExternalEntity(PROLOG_STATE *);
+#endif /* XML_DTD */
 
 #define XmlTokenRole(state, tok, ptr, end, enc) \
  (((state)->handler)(state, tok, ptr, end, enc))

3rdparty/expat/xmltok.h

@@ -0,0 +1,316 @@
+/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
+   See the file COPYING for copying permission.
+*/
+
+#ifndef XmlTok_INCLUDED
+#define XmlTok_INCLUDED 1
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* The following token may be returned by XmlContentTok */
+#define XML_TOK_TRAILING_RSQB -5 /* ] or ]] at the end of the scan; might be
+                                    start of illegal ]]> sequence */
+/* The following tokens may be returned by both XmlPrologTok and
+   XmlContentTok.
+*/
+#define XML_TOK_NONE -4          /* The string to be scanned is empty */
+#define XML_TOK_TRAILING_CR -3   /* A CR at the end of the scan;
+                                    might be part of CRLF sequence */
+#define XML_TOK_PARTIAL_CHAR -2  /* only part of a multibyte sequence */
+#define XML_TOK_PARTIAL -1       /* only part of a token */
+#define XML_TOK_INVALID 0
+
+/* The following tokens are returned by XmlContentTok; some are also
+   returned by XmlAttributeValueTok, XmlEntityTok, XmlCdataSectionTok.
+*/
+#define XML_TOK_START_TAG_WITH_ATTS 1
+#define XML_TOK_START_TAG_NO_ATTS 2
+#define XML_TOK_EMPTY_ELEMENT_WITH_ATTS 3 /* empty element tag <e/> */
+#define XML_TOK_EMPTY_ELEMENT_NO_ATTS 4
+#define XML_TOK_END_TAG 5
+#define XML_TOK_DATA_CHARS 6
+#define XML_TOK_DATA_NEWLINE 7
+#define XML_TOK_CDATA_SECT_OPEN 8
+#define XML_TOK_ENTITY_REF 9
+#define XML_TOK_CHAR_REF 10               /* numeric character reference */
+
+/* The following tokens may be returned by both XmlPrologTok and
+   XmlContentTok.
+*/
+#define XML_TOK_PI 11                     /* processing instruction */
+#define XML_TOK_XML_DECL 12               /* XML decl or text decl */
+#define XML_TOK_COMMENT 13
+#define XML_TOK_BOM 14                    /* Byte order mark */
+
+/* The following tokens are returned only by XmlPrologTok */
+#define XML_TOK_PROLOG_S 15
+#define XML_TOK_DECL_OPEN 16              /* <!foo */
+#define XML_TOK_DECL_CLOSE 17             /* > */
+#define XML_TOK_NAME 18
+#define XML_TOK_NMTOKEN 19
+#define XML_TOK_POUND_NAME 20             /* #name */
+#define XML_TOK_OR 21                     /* | */
+#define XML_TOK_PERCENT 22
+#define XML_TOK_OPEN_PAREN 23
+#define XML_TOK_CLOSE_PAREN 24
+#define XML_TOK_OPEN_BRACKET 25
+#define XML_TOK_CLOSE_BRACKET 26
+#define XML_TOK_LITERAL 27
+#define XML_TOK_PARAM_ENTITY_REF 28
+#define XML_TOK_INSTANCE_START 29
+
+/* The following occur only in element type declarations */
+#define XML_TOK_NAME_QUESTION 30          /* name? */
+#define XML_TOK_NAME_ASTERISK 31          /* name* */
+#define XML_TOK_NAME_PLUS 32              /* name+ */
+#define XML_TOK_COND_SECT_OPEN 33         /* <![ */
+#define XML_TOK_COND_SECT_CLOSE 34        /* ]]> */
+#define XML_TOK_CLOSE_PAREN_QUESTION 35   /* )? */
+#define XML_TOK_CLOSE_PAREN_ASTERISK 36   /* )* */
+#define XML_TOK_CLOSE_PAREN_PLUS 37       /* )+ */
+#define XML_TOK_COMMA 38
+
+/* The following token is returned only by XmlAttributeValueTok */
+#define XML_TOK_ATTRIBUTE_VALUE_S 39
+
+/* The following token is returned only by XmlCdataSectionTok */
+#define XML_TOK_CDATA_SECT_CLOSE 40
+
+/* With namespace processing this is returned by XmlPrologTok for a
+   name with a colon.
+*/
+#define XML_TOK_PREFIXED_NAME 41
+
+#ifdef XML_DTD
+#define XML_TOK_IGNORE_SECT 42
+#endif /* XML_DTD */
+
+#ifdef XML_DTD
+#define XML_N_STATES 4
+#else /* not XML_DTD */
+#define XML_N_STATES 3
+#endif /* not XML_DTD */
+
+#define XML_PROLOG_STATE 0
+#define XML_CONTENT_STATE 1
+#define XML_CDATA_SECTION_STATE 2
+#ifdef XML_DTD
+#define XML_IGNORE_SECTION_STATE 3
+#endif /* XML_DTD */
+
+#define XML_N_LITERAL_TYPES 2
+#define XML_ATTRIBUTE_VALUE_LITERAL 0
+#define XML_ENTITY_VALUE_LITERAL 1
+
+/* The size of the buffer passed to XmlUtf8Encode must be at least this. */
+#define XML_UTF8_ENCODE_MAX 4
+/* The size of the buffer passed to XmlUtf16Encode must be at least this. */
+#define XML_UTF16_ENCODE_MAX 2
+
+typedef struct position {
+  /* first line and first column are 0 not 1 */
+  XML_Size lineNumber;
+  XML_Size columnNumber;
+} POSITION;
+
+typedef struct {
+  const char *name;
+  const char *valuePtr;
+  const char *valueEnd;
+  char normalized;
+} ATTRIBUTE;
+
+struct encoding;
+typedef struct encoding ENCODING;
+
+typedef int (PTRCALL *SCANNER)(const ENCODING *,
+                               const char *,
+                               const char *,
+                               const char **);
+
+struct encoding {
+  SCANNER scanners[XML_N_STATES];
+  SCANNER literalScanners[XML_N_LITERAL_TYPES];
+  int (PTRCALL *sameName)(const ENCODING *,
+                          const char *,
+                          const char *);
+  int (PTRCALL *nameMatchesAscii)(const ENCODING *,
+                                  const char *,
+                                  const char *,
+                                  const char *);
+  int (PTRFASTCALL *nameLength)(const ENCODING *, const char *);
+  const char *(PTRFASTCALL *skipS)(const ENCODING *, const char *);
+  int (PTRCALL *getAtts)(const ENCODING *enc,
+                         const char *ptr,
+                         int attsMax,
+                         ATTRIBUTE *atts);
+  int (PTRFASTCALL *charRefNumber)(const ENCODING *enc, const char *ptr);
+  int (PTRCALL *predefinedEntityName)(const ENCODING *,
+                                      const char *,
+                                      const char *);
+  void (PTRCALL *updatePosition)(const ENCODING *,
+                                 const char *ptr,
+                                 const char *end,
+                                 POSITION *);
+  int (PTRCALL *isPublicId)(const ENCODING *enc,
+                            const char *ptr,
+                            const char *end,
+                            const char **badPtr);
+  void (PTRCALL *utf8Convert)(const ENCODING *enc,
+                              const char **fromP,
+                              const char *fromLim,
+                              char **toP,
+                              const char *toLim);
+  void (PTRCALL *utf16Convert)(const ENCODING *enc,
+                               const char **fromP,
+                               const char *fromLim,
+                               unsigned short **toP,
+                               const unsigned short *toLim);
+  int minBytesPerChar;
+  char isUtf8;
+  char isUtf16;
+};
+
+/* Scan the string starting at ptr until the end of the next complete
+   token, but do not scan past eptr.  Return an integer giving the
+   type of token.
+
+   Return XML_TOK_NONE when ptr == eptr; nextTokPtr will not be set.
+
+   Return XML_TOK_PARTIAL when the string does not contain a complete
+   token; nextTokPtr will not be set.
+
+   Return XML_TOK_INVALID when the string does not start a valid
+   token; nextTokPtr will be set to point to the character which made
+   the token invalid.
+
+   Otherwise the string starts with a valid token; nextTokPtr will be
+   set to point to the character following the end of that token.
+
+   Each data character counts as a single token, but adjacent data
+   characters may be returned together.  Similarly for characters in
+   the prolog outside literals, comments and processing instructions.
+*/
+
+
+#define XmlTok(enc, state, ptr, end, nextTokPtr) \
+  (((enc)->scanners[state])(enc, ptr, end, nextTokPtr))
+
+#define XmlPrologTok(enc, ptr, end, nextTokPtr) \
+   XmlTok(enc, XML_PROLOG_STATE, ptr, end, nextTokPtr)
+
+#define XmlContentTok(enc, ptr, end, nextTokPtr) \
+   XmlTok(enc, XML_CONTENT_STATE, ptr, end, nextTokPtr)
+
+#define XmlCdataSectionTok(enc, ptr, end, nextTokPtr) \
+   XmlTok(enc, XML_CDATA_SECTION_STATE, ptr, end, nextTokPtr)
+
+#ifdef XML_DTD
+
+#define XmlIgnoreSectionTok(enc, ptr, end, nextTokPtr) \
+   XmlTok(enc, XML_IGNORE_SECTION_STATE, ptr, end, nextTokPtr)
+
+#endif /* XML_DTD */
+
+/* This is used for performing a 2nd-level tokenization on the content
+   of a literal that has already been returned by XmlTok.
+*/
+#define XmlLiteralTok(enc, literalType, ptr, end, nextTokPtr) \
+  (((enc)->literalScanners[literalType])(enc, ptr, end, nextTokPtr))
+
+#define XmlAttributeValueTok(enc, ptr, end, nextTokPtr) \
+   XmlLiteralTok(enc, XML_ATTRIBUTE_VALUE_LITERAL, ptr, end, nextTokPtr)
+
+#define XmlEntityValueTok(enc, ptr, end, nextTokPtr) \
+   XmlLiteralTok(enc, XML_ENTITY_VALUE_LITERAL, ptr, end, nextTokPtr)
+
+#define XmlSameName(enc, ptr1, ptr2) (((enc)->sameName)(enc, ptr1, ptr2))
+
+#define XmlNameMatchesAscii(enc, ptr1, end1, ptr2) \
+  (((enc)->nameMatchesAscii)(enc, ptr1, end1, ptr2))
+
+#define XmlNameLength(enc, ptr) \
+  (((enc)->nameLength)(enc, ptr))
+
+#define XmlSkipS(enc, ptr) \
+  (((enc)->skipS)(enc, ptr))
+
+#define XmlGetAttributes(enc, ptr, attsMax, atts) \
+  (((enc)->getAtts)(enc, ptr, attsMax, atts))
+
+#define XmlCharRefNumber(enc, ptr) \
+  (((enc)->charRefNumber)(enc, ptr))
+
+#define XmlPredefinedEntityName(enc, ptr, end) \
+  (((enc)->predefinedEntityName)(enc, ptr, end))
+
+#define XmlUpdatePosition(enc, ptr, end, pos) \
+  (((enc)->updatePosition)(enc, ptr, end, pos))
+
+#define XmlIsPublicId(enc, ptr, end, badPtr) \
+  (((enc)->isPublicId)(enc, ptr, end, badPtr))
+
+#define XmlUtf8Convert(enc, fromP, fromLim, toP, toLim) \
+  (((enc)->utf8Convert)(enc, fromP, fromLim, toP, toLim))
+
+#define XmlUtf16Convert(enc, fromP, fromLim, toP, toLim) \
+  (((enc)->utf16Convert)(enc, fromP, fromLim, toP, toLim))
+
+typedef struct {
+  ENCODING initEnc;
+  const ENCODING **encPtr;
+} INIT_ENCODING;
+
+int XmlParseXmlDecl(int isGeneralTextEntity,
+                    const ENCODING *enc,
+                    const char *ptr,
+                    const char *end,
+                    const char **badPtr,
+                    const char **versionPtr,
+                    const char **versionEndPtr,
+                    const char **encodingNamePtr,
+                    const ENCODING **namedEncodingPtr,
+                    int *standalonePtr);
+
+int XmlInitEncoding(INIT_ENCODING *, const ENCODING **, const char *name);
+const ENCODING *XmlGetUtf8InternalEncoding(void);
+const ENCODING *XmlGetUtf16InternalEncoding(void);
+int FASTCALL XmlUtf8Encode(int charNumber, char *buf);
+int FASTCALL XmlUtf16Encode(int charNumber, unsigned short *buf);
+int XmlSizeOfUnknownEncoding(void);
+
+
+typedef int (XMLCALL *CONVERTER) (void *userData, const char *p);
+
+ENCODING *
+XmlInitUnknownEncoding(void *mem,
+                       int *table,
+                       CONVERTER convert,
+                       void *userData);
+
+int XmlParseXmlDeclNS(int isGeneralTextEntity,
+                      const ENCODING *enc,
+                      const char *ptr,
+                      const char *end,
+                      const char **badPtr,
+                      const char **versionPtr,
+                      const char **versionEndPtr,
+                      const char **encodingNamePtr,
+                      const ENCODING **namedEncodingPtr,
+                      int *standalonePtr);
+
+int XmlInitEncodingNS(INIT_ENCODING *, const ENCODING **, const char *name);
+const ENCODING *XmlGetUtf8InternalEncodingNS(void);
+const ENCODING *XmlGetUtf16InternalEncodingNS(void);
+ENCODING *
+XmlInitUnknownEncodingNS(void *mem,
+                         int *table,
+                         CONVERTER convert,
+                         void *userData);
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* not XmlTok_INCLUDED */

3rdparty/expat/xmltok_ns.c

@@ -0,0 +1,115 @@
+/* Copyright (c) 1998, 1999 Thai Open Source Software Center Ltd
+   See the file COPYING for copying permission.
+*/
+
+/* This file is included! */
+#ifdef XML_TOK_NS_C
+
+const ENCODING *
+NS(XmlGetUtf8InternalEncoding)(void)
+{
+  return &ns(internal_utf8_encoding).enc;
+}
+
+const ENCODING *
+NS(XmlGetUtf16InternalEncoding)(void)
+{
+#if BYTEORDER == 1234
+  return &ns(internal_little2_encoding).enc;
+#elif BYTEORDER == 4321
+  return &ns(internal_big2_encoding).enc;
+#else
+  const short n = 1;
+  return (*(const char *)&n
+          ? &ns(internal_little2_encoding).enc
+          : &ns(internal_big2_encoding).enc);
+#endif
+}
+
+static const ENCODING * const NS(encodings)[] = {
+  &ns(latin1_encoding).enc,
+  &ns(ascii_encoding).enc,
+  &ns(utf8_encoding).enc,
+  &ns(big2_encoding).enc,
+  &ns(big2_encoding).enc,
+  &ns(little2_encoding).enc,
+  &ns(utf8_encoding).enc /* NO_ENC */
+};
+
+static int PTRCALL
+NS(initScanProlog)(const ENCODING *enc, const char *ptr, const char *end,
+                   const char **nextTokPtr)
+{
+  return initScan(NS(encodings), (const INIT_ENCODING *)enc,
+                  XML_PROLOG_STATE, ptr, end, nextTokPtr);
+}
+
+static int PTRCALL
+NS(initScanContent)(const ENCODING *enc, const char *ptr, const char *end,
+                    const char **nextTokPtr)
+{
+  return initScan(NS(encodings), (const INIT_ENCODING *)enc,
+                  XML_CONTENT_STATE, ptr, end, nextTokPtr);
+}
+
+int
+NS(XmlInitEncoding)(INIT_ENCODING *p, const ENCODING **encPtr,
+                    const char *name)
+{
+  int i = getEncodingIndex(name);
+  if (i == UNKNOWN_ENC)
+    return 0;
+  SET_INIT_ENC_INDEX(p, i);
+  p->initEnc.scanners[XML_PROLOG_STATE] = NS(initScanProlog);
+  p->initEnc.scanners[XML_CONTENT_STATE] = NS(initScanContent);
+  p->initEnc.updatePosition = initUpdatePosition;
+  p->encPtr = encPtr;
+  *encPtr = &(p->initEnc);
+  return 1;
+}
+
+static const ENCODING *
+NS(findEncoding)(const ENCODING *enc, const char *ptr, const char *end)
+{
+#define ENCODING_MAX 128
+  char buf[ENCODING_MAX];
+  char *p = buf;
+  int i;
+  XmlUtf8Convert(enc, &ptr, end, &p, p + ENCODING_MAX - 1);
+  if (ptr != end)
+    return 0;
+  *p = 0;
+  if (streqci(buf, KW_UTF_16) && enc->minBytesPerChar == 2)
+    return enc;
+  i = getEncodingIndex(buf);
+  if (i == UNKNOWN_ENC)
+    return 0;
+  return NS(encodings)[i];
+}
+
+int
+NS(XmlParseXmlDecl)(int isGeneralTextEntity,
+                    const ENCODING *enc,
+                    const char *ptr,
+                    const char *end,
+                    const char **badPtr,
+                    const char **versionPtr,
+                    const char **versionEndPtr,
+                    const char **encodingName,
+                    const ENCODING **encoding,
+                    int *standalone)
+{
+  return doParseXmlDecl(NS(findEncoding),
+                        isGeneralTextEntity,
+                        enc,
+                        ptr,
+                        end,
+                        badPtr,
+                        versionPtr,
+                        versionEndPtr,
+                        encodingName,
+                        encoding,
+                        standalone);
+}
+
+#endif /* XML_TOK_NS_C */

3rdparty/udns/CMakeLists.txt

@@ -0,0 +1,41 @@
+include (SimGearComponent)
+INCLUDE (CheckFunctionExists)
+INCLUDE (CheckSymbolExists) 
+include (CheckIncludeFile)
+
+
+CHECK_FUNCTION_EXISTS(poll HAVE_POLL)
+CHECK_FUNCTION_EXISTS(getopt HAVE_GETOPT)
+CHECK_FUNCTION_EXISTS(inet_ntop HAVE_INET_PTON_NTOP)
+CHECK_SYMBOL_EXISTS(AF_INET6 "netinet/in.h" HAVE_IPv6) 
+# WINDOWS should be defined by msvc, should it?
+# somehow it is not, if somebody know a better way to define WINDOWS, please fix
+check_include_file(windows.h  WINDOWS)
+
+CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_BINARY_DIR}/config.h)
+include_directories(${CMAKE_BINARY_DIR})
+
+set(HEADERS
+)
+
+set(SOURCES
+    udns_resolver.c
+    udns_dn.c
+    udns_dntosp.c
+    udns_parse.c
+    udns_resolver.c
+    udns_init.c
+    udns_misc.c
+    udns_rr_a.c
+    udns_rr_ptr.c
+    udns_rr_mx.c
+    udns_rr_txt.c
+    udns_bl.c
+    udns_rr_srv.c
+    udns_rr_naptr.c
+    udns_codes.c
+    udns_jran.c
+    udns_XtoX.c
+)
+
+simgear_component(udns 3rdparty/udns "${SOURCES}" "${HEADERS}")

3rdparty/udns/COPYING.LGPL

@@ -0,0 +1,502 @@
+                  GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 2.1, February 1999
+
+ Copyright (C) 1991, 1999 Free Software Foundation, Inc.
+ 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the Lesser GPL.  It also counts
+ as the successor of the GNU Library Public License, version 2, hence
+ the version number 2.1.]
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Lesser General Public License, applies to some
+specially designated software packages--typically libraries--of the
+Free Software Foundation and other authors who decide to use it.  You
+can use it too, but we suggest you first think carefully about whether
+this license or the ordinary General Public License is the better
+strategy to use in any particular case, based on the explanations below.
+
+  When we speak of free software, we are referring to freedom of use,
+not price.  Our General Public Licenses are designed to make sure that
+you have the freedom to distribute copies of free software (and charge
+for this service if you wish); that you receive source code or can get
+it if you want it; that you can change the software and use pieces of
+it in new free programs; and that you are informed that you can do
+these things.
+
+  To protect your rights, we need to make restrictions that forbid
+distributors to deny you these rights or to ask you to surrender these
+rights.  These restrictions translate to certain responsibilities for
+you if you distribute copies of the library or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link other code with the library, you must provide
+complete object files to the recipients, so that they can relink them
+with the library after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  We protect your rights with a two-step method: (1) we copyright the
+library, and (2) we offer you this license, which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  To protect each distributor, we want to make it very clear that
+there is no warranty for the free library.  Also, if the library is
+modified by someone else and passed on, the recipients should know
+that what they have is not the original version, so that the original
+author's reputation will not be affected by problems that might be
+introduced by others.
+
+  Finally, software patents pose a constant threat to the existence of
+any free program.  We wish to make sure that a company cannot
+effectively restrict the users of a free program by obtaining a
+restrictive license from a patent holder.  Therefore, we insist that
+any patent license obtained for a version of the library must be
+consistent with the full freedom of use specified in this license.
+
+  Most GNU software, including some libraries, is covered by the
+ordinary GNU General Public License.  This license, the GNU Lesser
+General Public License, applies to certain designated libraries, and
+is quite different from the ordinary General Public License.  We use
+this license for certain libraries in order to permit linking those
+libraries into non-free programs.
+
+  When a program is linked with a library, whether statically or using
+a shared library, the combination of the two is legally speaking a
+combined work, a derivative of the original library.  The ordinary
+General Public License therefore permits such linking only if the
+entire combination fits its criteria of freedom.  The Lesser General
+Public License permits more lax criteria for linking other code with
+the library.
+
+  We call this license the "Lesser" General Public License because it
+does Less to protect the user's freedom than the ordinary General
+Public License.  It also provides other free software developers Less
+of an advantage over competing non-free programs.  These disadvantages
+are the reason we use the ordinary General Public License for many
+libraries.  However, the Lesser license provides advantages in certain
+special circumstances.
+
+  For example, on rare occasions, there may be a special need to
+encourage the widest possible use of a certain library, so that it becomes
+a de-facto standard.  To achieve this, non-free programs must be
+allowed to use the library.  A more frequent case is that a free
+library does the same job as widely used non-free libraries.  In this
+case, there is little to gain by limiting the free library to free
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+
+  In other cases, permission to use a particular library in non-free
+programs enables a greater number of people to use a large body of
+free software.  For example, permission to use the GNU C Library in
+non-free programs enables many more people to use the whole GNU
+operating system, as well as its variant, the GNU/Linux operating
+system.
+
+  Although the Lesser General Public License is Less protective of the
+users' freedom, it does ensure that the user of a program that is
+linked with the Library has the freedom and the wherewithal to run
+that program using a modified version of the Library.
+
+  The precise terms and conditions for copying, distribution and
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+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, whereas the latter must
+be combined with the library in order to run.
+
+                  GNU LESSER GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library or other
+program which contains a notice placed by the copyright holder or
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+  Activities other than copying, distribution and modification are not
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+
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
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+  You may charge a fee for the physical act of transferring a copy,
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+These requirements apply to the modified work as a whole.  If
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+Thus, it is not the intent of this section to claim rights or contest
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+
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+a storage or distribution medium does not bring the other work under
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+
+  3. You may opt to apply the terms of the ordinary GNU General Public
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+
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+  When a "work that uses the Library" uses material from a header file
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+
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+
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+
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+
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+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!

3rdparty/udns/Makefile.in

@@ -0,0 +1,197 @@
+#! /usr/bin/make -rf
+# Makefile.in
+# libudns Makefile
+#
+# Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+# This file is part of UDNS library, an async DNS stub resolver.
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library, in file named COPYING.LGPL; if not,
+# write to the Free Software Foundation, Inc., 59 Temple Place,
+# Suite 330, Boston, MA  02111-1307  USA
+
+NAME   = udns
+VERS   = 0.4
+SOVER  = 0
+
+SRCS   = udns_dn.c udns_dntosp.c udns_parse.c udns_resolver.c udns_init.c \
+	udns_misc.c udns_XtoX.c \
+	udns_rr_a.c udns_rr_ptr.c udns_rr_mx.c udns_rr_txt.c udns_bl.c \
+	udns_rr_srv.c udns_rr_naptr.c udns_codes.c udns_jran.c
+USRCS  = dnsget.c rblcheck.c ex-rdns.c
+DIST   = COPYING.LGPL udns.h udns.3 dnsget.1 rblcheck.1 $(SRCS) $(USRCS) \
+	 NEWS TODO NOTES Makefile.in configure configure.lib \
+	 inet_XtoX.c getopt.c
+
+OBJS   = $(SRCS:.c=.o) $(GEN:.c=.o)
+LIB    = lib$(NAME).a
+LIBFL  = -L. -l$(NAME)
+
+SOBJS  = $(OBJS:.o=.lo)
+SOLIB  = lib$(NAME)_s.so
+SOLIBV = lib$(NAME).so.$(SOVER)
+SOLIBFL= -L. -l$(NAME)_s
+
+UTILS   = $(USRCS:.c=)
+UOBJS   = $(USRCS:.c=.o)
+SOUTILS = $(USRCS:.c=_s)
+
+NAMEPFX = $(NAME)-$(VERS)
+
+CC = @CC@
+CFLAGS = @CFLAGS@
+CDEFS = @CDEFS@
+LD = @LD@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+LDSHARED = $(LD) -shared
+PICFLAGS = -fPIC
+AWK = awk
+TAR = tar
+
+all: static
+
+.SUFFIXES: .c .o .lo
+
+static: $(LIB) $(UTILS)
+staticlib: $(LIB)
+$(LIB): $(OBJS)
+	-rm -f $@
+	$(AR) rv $@ $(OBJS)
+.c.o:
+	$(CC) $(CFLAGS) $(CDEFS) -c $<
+
+shared: $(SOLIBV) $(SOUTILS)
+sharedlib: $(SOLIBV)
+
+$(SOLIBV): $(SOBJS)
+	$(LDSHARED) -Wl,--soname,$(SOLIBV) -o $@ $(SOBJS) $(LDFLAGS) $(LIBS)
+$(SOLIB): $(SOLIBV)
+	rm -f $@
+	ln -s $(SOLIBV) $@
+.c.lo:
+	$(CC) $(CFLAGS) $(PICFLAGS) $(CDEFS) -o $@ -c $<
+
+# udns_codes.c is generated from udns.h
+udns_codes.c: udns.h
+	@echo Generating $@
+	@set -e; exec >$@.tmp; \
+	set T type C class R rcode; \
+	echo "/* Automatically generated. */"; \
+	echo "#include \"udns.h\""; \
+	while [ "$$1" ]; do \
+	 echo; \
+	 echo "const struct dns_nameval dns_$${2}tab[] = {"; \
+	 $(AWK) "/^  DNS_$${1}_[A-Z0-9_]+[ 	]*=/ \
+	  { printf \" {%s,\\\"%s\\\"},\\n\", \$$1, substr(\$$1,7) }" \
+	  udns.h ; \
+	 echo " {0,0}};"; \
+	 echo "const char *dns_$${2}name(enum dns_$${2} code) {"; \
+	 echo " static char nm[20];"; \
+	 echo " switch(code) {"; \
+	 $(AWK) "BEGIN{i=0} \
+	   /^  DNS_$${1}_[A-Z0-9_]+[ 	]*=/ \
+	   {printf \" case %s: return dns_$${2}tab[%d].name;\\n\",\$$1,i++}\
+	   " udns.h ; \
+	 echo " }"; \
+	 echo " return _dns_format_code(nm,\"$$2\",code);"; \
+	 echo "}"; \
+	 shift 2; \
+	done
+	@mv $@.tmp $@
+
+udns.3.html: udns.3
+	groff -man -Thtml udns.3 > $@.tmp
+	mv $@.tmp $@
+
+dist: $(NAMEPFX).tar.gz
+$(NAMEPFX).tar.gz: $(DIST)
+	$(TAR) -cv -f $@ -z --transform 's|^|$(NAMEPFX)/|' $(DIST)
+
+subdist:
+	cp -p $(DIST) $(TARGET)/
+
+clean:
+	rm -f $(OBJS)
+	rm -f $(SOBJS)
+	rm -f $(UOBJS)
+	rm -f config.log
+distclean: clean
+	rm -f $(LIB) $(SOLIB) $(SOLIBV) udns.3.html
+	rm -f $(UTILS) $(SOUTILS)
+	rm -f config.status config.h Makefile
+
+
+Makefile: configure configure.lib Makefile.in
+	./configure
+	@echo
+	@echo Please rerun make >&2
+	@exit 1
+
+.PHONY: all static staticlib shared sharedlib dist clean distclean subdist \
+  depend dep deps
+
+depend dep deps: $(SRCS) $(USRC)
+	@echo Generating deps for:
+	@echo \ $(SRCS)
+	@echo \ $(USRCS)
+	@sed '/^# depend/q' Makefile.in > Makefile.tmp
+	@set -e; \
+	for f in $(SRCS) $(USRCS); do \
+	 echo $${f%.c}.o $${f%.c}.lo: $$f \
+	  `sed -n 's/^#[ 	]*include[ 	]*"\(.*\)".*/\1/p' $$f`; \
+	done >> Makefile.tmp; \
+	for f in $(USRCS:.c=.o); do \
+	 echo "$${f%.?}: $$f \$$(LIB)"; \
+	 echo "	\$$(LD) \$$(LDLAGS) -o \$$@ $$f \$$(LIBFL) \$$(LIBS)"; \
+	 echo "$${f%.?}_s: $$f \$$(SOLIB)"; \
+	 echo "	\$$(LD) \$$(LDFLAGS) -o \$$@ $$f \$$(SOLIBFL)"; \
+	done >> Makefile.tmp ; \
+	if cmp Makefile.tmp Makefile.in >/dev/null 2>&1 ; then \
+	 echo Makefile.in unchanged; rm -f Makefile.tmp; \
+	else \
+	 echo Updating Makfile.in; mv -f Makefile.tmp Makefile.in ; \
+	fi
+
+# depend
+udns_dn.o udns_dn.lo: udns_dn.c udns.h
+udns_dntosp.o udns_dntosp.lo: udns_dntosp.c udns.h
+udns_parse.o udns_parse.lo: udns_parse.c udns.h
+udns_resolver.o udns_resolver.lo: udns_resolver.c config.h udns.h
+udns_init.o udns_init.lo: udns_init.c config.h udns.h
+udns_misc.o udns_misc.lo: udns_misc.c udns.h
+udns_XtoX.o udns_XtoX.lo: udns_XtoX.c config.h udns.h inet_XtoX.c
+udns_rr_a.o udns_rr_a.lo: udns_rr_a.c udns.h
+udns_rr_ptr.o udns_rr_ptr.lo: udns_rr_ptr.c udns.h
+udns_rr_mx.o udns_rr_mx.lo: udns_rr_mx.c udns.h
+udns_rr_txt.o udns_rr_txt.lo: udns_rr_txt.c udns.h
+udns_bl.o udns_bl.lo: udns_bl.c udns.h
+udns_rr_srv.o udns_rr_srv.lo: udns_rr_srv.c udns.h
+udns_rr_naptr.o udns_rr_naptr.lo: udns_rr_naptr.c udns.h
+udns_codes.o udns_codes.lo: udns_codes.c udns.h
+udns_jran.o udns_jran.lo: udns_jran.c udns.h
+dnsget.o dnsget.lo: dnsget.c config.h udns.h getopt.c
+rblcheck.o rblcheck.lo: rblcheck.c config.h udns.h getopt.c
+ex-rdns.o ex-rdns.lo: ex-rdns.c udns.h
+dnsget: dnsget.o $(LIB)
+	$(LD) $(LDLAGS) -o $@ dnsget.o $(LIBFL) $(LIBS)
+dnsget_s: dnsget.o $(SOLIB)
+	$(LD) $(LDFLAGS) -o $@ dnsget.o $(SOLIBFL)
+rblcheck: rblcheck.o $(LIB)
+	$(LD) $(LDLAGS) -o $@ rblcheck.o $(LIBFL) $(LIBS)
+rblcheck_s: rblcheck.o $(SOLIB)
+	$(LD) $(LDFLAGS) -o $@ rblcheck.o $(SOLIBFL)
+ex-rdns: ex-rdns.o $(LIB)
+	$(LD) $(LDLAGS) -o $@ ex-rdns.o $(LIBFL) $(LIBS)
+ex-rdns_s: ex-rdns.o $(SOLIB)
+	$(LD) $(LDFLAGS) -o $@ ex-rdns.o $(SOLIBFL)

3rdparty/udns/NEWS

@@ -0,0 +1,136 @@
+NEWS
+User-visible changes in udns library.  Recent changes on top.
+
+0.4 (Jan 2014)
+
+ - bugfix: fix a bug in new list code introduced in 0.3
+ - portability: use $(LD)/$(LDFLAGS)/$(LIBS)
+
+0.3 (Jan 2014)
+
+ - bugfix: refactor double-linked list implementation in udns_resolver.c
+   (internal to the library) to be more strict-aliasing-friendly, because
+   old code were miscompiled by gcc.
+
+ - bugfix: forgotten strdup() in rblcheck
+
+0.2 (Dec 2011)
+
+ - bugfix: SRV RR handling: fix domain name parsing and crash in case
+   if no port is specified on input for SRV record query
+
+ - (trivial api) dns_set_opts() now returns number of unrecognized 
+   options instead of always returning 0
+
+ - dnsget: combine -f and -o options in dnsget (and stop documenting -f),
+   and report unknown/invalid -o options (and error out)
+
+ - dnsget: pretty-print SSHFP RRs
+
+ 0.1 (Dec 2010)
+
+ - bugfix: udns_new(old) - when actually cloning another context -
+   makes the new context referencing memory from old, which leads
+   to crashes when old is modified later
+
+ - use random queue IDs (the 16bit qID) in queries instead of sequentional
+   ones, based on simple pseudo-random RNG by Bob Jenkins (udns_jran.[ch]).
+   Some people believe that this improves security (CVE-2008-1447).  I'm
+   still not convinced (see comments in udns_resolver.c), but it isn't
+   difficult to add after all.
+
+ - deprecate dns_random16() function which was declared in udns.h
+   (not anymore) but never documented.  In order to keep ABI compatible
+   it is still exported.
+
+ - library has a way now to set query flags (DNS_SET_DO; DNS_SET_CD).
+
+ - dnsget now prints non-printable chars in all strings in DNS RRs using
+   decimal escape sequences (\%03u) instead of hexadecimal (\%02x) when
+   before - other DNS software does it like this.
+
+ - recognize a few more record types in dnsget, notable some DNSSEC RRs;
+   add -f option for dnsget to set query flags.
+
+ - udns is not a Debian native package anymore (was a wrong idea)
+
+0.0.9 (16 Jan 2007)
+
+ - incompat: minor API changes in dns_init() &friends.  dns_init()
+   now requires extra `struct dns_ctx *' argument.  Not bumped
+   soversion yet - I only expect one "release" with this change.
+
+ - many small bugfixes, here and there
+
+ - more robust FORMERR replies handling - not only such replies are now
+   recognized, but udns retries queries without EDNS0 extensions if tried
+   with, but server reported FORMERR
+
+ - portability changes, udns now includes getopt() implementation fo
+   the systems lacking it (mostly windows), and dns_ntop()&dns_pton(),
+   which are either just wrappers for system functions or reimplementations.
+
+ - build is now based on autoconf-like configuration
+
+ - NAPTR (RFC3403) RR decoding support
+
+ - new file NOTES which complements TODO somewhat, and includes some
+   important shortcomings
+
+ - many internal cleanups, including some preparations for better error
+   recovery, security and robustness (and thus API changes)
+
+ - removed some #defines which are now unused (like DNS_MAXSRCH)
+
+ - changed WIN32 to WINDOWS everywhere in preprocessor tests,
+   to be able to build it on win64 as well
+
+0.0.8 (12 Sep 2005)
+
+ - added SRV records (rfc2782) parsing,
+   thanks to Thadeu Lima de Souza Cascardo for implementation.
+
+ - bugfixes:
+   o use uninitialized value when no reply, library died with assertion:
+     assert((status < 0 && result == 0) || (status >= 0 && result != 0)).
+   o on some OSes, struct sockaddr_in has additional fields, so
+     memcmp'ing two sockaddresses does not work.
+
+ - rblcheck(.1)
+
+0.0.7 (20 Apr 2005)
+
+ - dnsget.1 manpage and several enhancements to dnsget.
+
+ - allow nameserver names for -n option of dnsget.
+
+ - API change: all dns_submit*() routines now does not expect
+   last `now' argument, since requests aren't sent immediately
+   anymore.
+
+ - API change: different application timer callback mechanism.
+   Udns now uses single per-context timer instead of per-query.
+
+ - don't assume DNS replies only contain backward DN pointers,
+   allow forward pointers too.  Change parsing API.
+
+ - debianize
+
+0.0.6 (08 Apr 2005)
+
+ - use double sorted list for requests (sorted by deadline).
+   This should significantly speed up timeout processing for
+   large number of requests.
+
+ - changed debugging interface, so it is finally useable
+   (still not documented).
+
+ - dnsget routine is now Officially Useable, and sometimes
+   even more useable than `host' from BIND distribution
+   (and sometimes not - dnsget does not have -C option
+   and TCP mode)
+
+ - Debian packaging in debian/ -- udns is now maintained as a
+   native Debian package.
+
+ - alot (and I really mean alot) of code cleanups all over.

3rdparty/udns/NOTES

@@ -0,0 +1,226 @@
+Assorted notes about udns (library).
+
+UDP-only mode
+~~~~~~~~~~~~~
+
+First of all, since udns is (currently) UDP-only, there are some
+shortcomings.
+
+It assumes that a reply will fit into a UDP buffer.  With adoption of EDNS0,
+and general robustness of IP stacks, in most cases it's not an issue.  But
+in some cases there may be problems:
+
+ - if an RRset is "very large" so it does not fit even in buffer of size
+   requested by the library (current default is 4096; some servers limits
+   it further), we will not see the reply, or will only see "damaged"
+   reply (depending on the server).
+
+ - many DNS servers ignores EDNS0 option requests.  In this case, no matter
+   which buffer size udns library will request, such servers reply is limited
+   to 512 bytes (standard pre-EDNS0 DNS packet size).  (Udns falls back to
+   non-EDNO0 query if EDNS0-enabled one received FORMERR or NOTIMPL error).
+
+The problem is that with this, udns currently will not consider replies with
+TC (truncation) bit set, and will treat such replies the same way as it
+treats SERVFAIL replies, thus trying next server, or temp-failing the query
+if no more servers to try.  In other words, if the reply is really large, or
+if the servers you're using don't support EDNS0, your application will be
+unable to resolve a given name.
+
+Yet it's not common situation - in practice, it's very rare.
+
+Implementing TCP mode isn't difficult, but it complicates API significantly.
+Currently udns uses only single UDP socket (or - maybe in the future - two,
+see below), but in case of TCP, it will need to open and close sockets for
+TCP connections left and right, and that have to be integrated into an
+application's event loop in an easy and efficient way.  Plus all the
+timeouts - different for connect(), write, and several stages of read.
+
+IPv6 vs IPv4 usage
+~~~~~~~~~~~~~~~~~~
+
+This is only relevant for nameservers reachable over IPv6, NOT for IPv6
+queries.  I.e., if you've IPv6 addresses in 'nameservers' line in your
+/etc/resolv.conf file.  Even more: if you have BOTH IPv6 AND IPv4 addresses
+there.  Or pass them to udns initialization routines.
+
+Since udns uses a single UDP socket to communicate with all nameservers,
+it should support both v4 and v6 communications.  Most current platforms
+supports this mode - using PF_INET6 socket and V4MAPPED addresses, i.e,
+"tunnelling" IPv4 inside IPv6.  But not all systems supports this.  And
+more, it has been said that such mode is deprecated.
+
+So, list only IPv4 or only IPv6 addresses, but don't mix them, in your
+/etc/resolv.conf.
+
+An alternative is to use two sockets instead of 1 - one for IPv6 and one
+for IPv4.  For now I'm not sure if it's worth the complexity - again, of
+the API, not the library itself (but this will not simplify library either).
+
+Single socket for all queries
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Using single UDP socket for sending queries to all nameservers has obvious
+advantages.  First it's, again, trivial, simple to use API.  And simple
+library too.  Also, after sending queries to all nameservers (in case first
+didn't reply in time), we will be able to receive late reply from first
+nameserver and accept it.
+
+But this mode has disadvantages too.  Most important is that it's much easier
+to send fake reply to us, as the UDP port where we expects the reply to come
+to is constant during the whole lifetime of an application.  More secure
+implementations uses random port for every single query.  While port number
+(16 bits integer) can not hold much randomness, it's still of some help.
+Ok, udns is a stub resolver, so it expects sorta friendly environment, but
+on LAN it's usually much easier to fire an attack, due to the speed of local
+network, where a bad guy can generate alot of packets in a short time.
+
+Spoofing of replies (Kaminsky attack, CVE-2008-1447)
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+While udns uses random numbers for query IDs, it uses single UDP port for
+all queries (see previous item).  And even if it used random UDP port for
+each query, the attack described in CVE-2008-1447 is still quite trivial.
+This is not specific to udns library unfortunately - it is inherent property
+of the protocol.  Udns is designed to work in a LAN, it needs full recursive
+resolver nearby, and modern LAN usually uses high-bandwidth equipment which
+makes the Kaminsky attack trivial.  The problem is that even with qID (16
+bits) and random UDP port (about 20 bits available to a regular process)
+combined still can not hold enough randomness, so on a fast network it is
+still easy to flood the target with fake replies and hit the "right" reply
+before real reply comes.  So random qIDs don't add much protection anyway,
+even if this feature is implemented in udns, and using all available
+techniques wont solve it either.
+
+See also long comment in udns_resolver.c, udns_newid().
+
+Assumptions about RRs returned
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+Currently udns processes records in the reply it received sequentially.
+This means that order of the records is significant.  For example, if
+we asked for foo.bar A, but the server returned that foo.bar is a CNAME
+(alias) for bar.baz, and bar.baz, in turn, has address 1.2.3.4, when
+the CNAME should come first in reply, followed by A.  While DNS specs
+does not say anything about order of records - it's an rrSET - unordered, -
+I think an implementation which returns the records in "wrong" order is
+somewhat insane...
+
+CNAME recursion
+~~~~~~~~~~~~~~~
+
+Another interesting point is the handling of CNAMEs returned as replies
+to non-CNAME queries.  If we asked for foo.bar A, but it's a CNAME, udns
+expects BOTH the CNAME itself and the target DN to be present in the reply.
+In other words, udns DOES NOT RECURSE CNAMES.  If we asked for foo.bar A,
+but only record in reply was that foo.bar is a CNAME for bar.baz, udns will
+return no records to an application (NXDOMAIN).  Strictly speaking, udns
+should repeat the query asking for bar.baz A, and recurse.  But since it's
+stub resolver, recursive resolver should recurse for us instead.
+
+It's not very difficult to implement, however.  Probably with some (global?)
+flag to en/dis-able the feature.  Provided there's some demand for it.
+
+To clarify: udns handles CNAME recursion in a single reply packet just fine.
+
+Note also that standard gethostbyname() routine does not recurse in this
+situation, too.
+
+Error reporting
+~~~~~~~~~~~~~~~
+
+Too many places in the code (various failure paths) sets generic "TEMPFAIL"
+error condition.  For example, if no nameserver replied to our query, an
+application will get generic TEMPFAIL, instead of something like TIMEDOUT.
+This probably should be fixed, but most applications don't care about the
+exact reasons of failure - 4 common cases are already too much:
+  - query returned some valid data
+  - NXDOMAIN
+  - valid domain but no data of requested type - =NXDOMAIN in most cases
+  - temporary error - this one sometimes (incorrectly!) treated as NXDOMAIN
+    by (naive) applications.
+DNS isn't yes/no, it's at least 3 variants, temp err being the 3rd important
+case!  And adding more variations for the temp error case is complicating things
+even more - again, from an application writer standpoint.  For diagnostics,
+such more specific error cases are of good help.
+
+Planned API changes
+~~~~~~~~~~~~~~~~~~~
+
+At least one thing I want to change for some future version is a way how
+queries are submitted and how replies are handled.
+
+I want to made dns_query object to be owned by an application.  So that instead
+of udns library allocating it for the lifetime of query, it will be pre-
+allocated by an application.  This simplifies and enhances query submitting
+interface, and complicates it a bit too, in simplest cases.
+
+Currently, we have:
+
+dns_submit_dn(dn, cls, typ, flags, parse, cbck, data)
+dns_submit_p(name, cls, typ, flags, parse, cbck, data)
+dns_submit_a4(ctx, name, flags, cbck, data)
+
+and so on -- with many parameters missed for type-specific cases, but generic
+cases being too complex for most common usage.
+
+Instead, with dns_query being owned by an app, we will be able to separately
+set up various parts of the query - domain name (various forms), type&class,
+parser, flags, callback...  and even change them at runtime.  And we will also
+be able to reuse query structures, instead of allocating/freeing them every
+time.  So the whole thing will look something like:
+
+ q = dns_alloc_query();
+ dns_submit(dns_q_flags(dns_q_a4(q, name, cbck), DNS_F_NOSRCH), data);
+
+The idea is to have a set of functions accepting struct dns_query* and
+returning it (so the calls can be "nested" like the above), to set up
+relevant parts of the query - specific type of callback, conversion from
+(type-specific) query parameters into a domain name (this is for type-
+specific query initializers), and setting various flags and options and
+type&class things.
+
+One example where this is almost essential - if we want to support
+per-query set of nameservers (which isn't at all useless: imagine a
+high-volume mail server, were we want to direct DNSBL queries to a separate
+set of nameservers, and rDNS queries to their own set and so on).  Adding
+another argument (set of nameservers to use) to EVERY query submitting
+routine is.. insane.  Especially since in 99% cases it will be set to
+default NULL.  But with such "nesting" of query initializers, it becomes
+trivial.
+
+This change (the way how queries gets submitted) will NOT break API/ABI
+compatibility with old versions, since the new submitting API works in
+parallel with current (and current will use the new one as building
+blocks, instead of doing all work at once).
+
+Another way to do the same is to manipulate query object right after a
+query has been submitted, but before any events processing (during this
+time, query object is allocated and initialized, but no actual network
+packets were sent - it will happen on the next event processing).  But
+this way it become impossible to perform syncronous resolver calls, since
+those calls hide query objects they use internally.
+
+Speaking of replies handling - the planned change is to stop using dynamic
+memory (malloc) inside the library.  That is, instead of allocating a buffer
+for a reply dynamically in a parsing routine (or memdup'ing the raw reply
+packet if no parsing routine is specified), I want udns to return the packet
+buffer it uses internally, and change parsing routines to expect a buffer
+for result.  When parsing, a routine will return true amount of memory it
+will need to place the result, regardless of whenever it has enough room
+or not, so that an application can (re)allocate properly sized buffer and
+call a parsing routine again.
+
+This, in theory, also can be done without breaking current API/ABI, but in
+that case we'll again need a parallel set of routines (parsing included),
+which makes the library more complicated with too many ways of doing the
+same thing.  Still, code reuse is at good level.
+
+Another modification I plan to include is to have an ability to work in
+terms of domain names (DNs) as used with on-wire DNS packets, not only
+with asciiz representations of them.  For this to work, the above two
+changes (query submission and result passing) have to be completed first
+(esp. the query submission part), so that it will be possible to specify
+some additional query flags (for example) to request domain names instead
+of the text strings, and to allow easy query submissions with either DNs
+or text strings.

3rdparty/udns/TODO

@@ -0,0 +1,59 @@
+TODO
+
+The following is mostly an internal, not user-visible stuff.
+
+* rearrange an API to make dns_query object owned by application,
+  so that it'll look like this:
+   struct dns_query *q;
+   q = dns_query_alloc(ctx);
+   dns_query_set(q, options, domain_name, flags, ...);
+   dns_query_submit(ctx, q);
+  For more information see NOTES file, section "Planned API changes".
+
+* allow NULL callbacks?  Or provide separate resolver
+  context list of queries which are done but wich did not
+  have callback, and dns_pick() routine to retrieve results
+  from this query, i.e. allow non-callback usage?  The
+  non-callback usage may be handy sometimes (any *good*
+  example?), but it will be difficult to provide type-safe
+  non-callback interface due to various RR-specific types
+  in use.
+
+* DNS_OPT_FLAGS should be DNS_OPT_ADDFLAGS and DNS_OPT_SETFLAGS.
+  Currently one can't add a single flag bit but preserve
+  existing bits... at least not without retrieving all current
+  flags before, which isn't that bad anyway.
+
+* dns_set_opts() may process flags too (such as aaonly etc)
+
+* a way to disable $NSCACHEIP et al processing?
+  (with now separate dns_init() and dns_reset(), it has finer
+  control, but still no way to init from system files but ignore
+  environment variables and the like)
+
+* initialize/open the context automatically, and be more
+  liberal about initialization in general?
+
+* dns_init(ctx, do_open) - make the parameter opposite, aka
+  dns_init(ctx, skip_open) ?
+
+* allow TCP queue?
+
+* more accurate error reporting.  Currently, udns always returns TEMPFAIL,
+  but don't specify why it happened (ENOMEM, timeout, etc).
+
+* check the error value returned by recvfrom() and
+  sendto() and determine which errors to ignore.
+
+* maybe merge dns_timeouts() and dns_ioevent(), to have
+  only one entry point for everything?  For traditional
+  select-loop-based eventloop it may be easier, but for
+  callback-driven event loops the two should be separate.
+  Provide an option, or a single dns_events() entry point
+  for select-loop approach, or just call dns_ioevent()
+  from within dns_timeouts() (probably after renaming
+  it to be dns_events()) ?
+
+* implement /etc/hosts lookup too, ala [c-]ares??
+
+* sortlist support?

3rdparty/udns/config.h.in

@@ -0,0 +1,5 @@
+#cmakedefine HAVE_POLL
+#cmakedefine HAVE_GETOPT
+#cmakedefine HAVE_INET_PTON_NTOP
+#cmakedefine HAVE_IPv6
+#cmakedefine WINDOWS

3rdparty/udns/configure

@@ -0,0 +1,165 @@
+#! /bin/sh
+# autoconf-style configuration script
+#
+
+set -e
+
+name=udns
+
+if [ -f udns.h -a -f udns_resolver.c ] ; then :
+else
+  echo "configure: error: sources not found at `pwd`" >&2
+  exit 1
+fi
+
+options="ipv6"
+
+for opt in $options; do
+  eval enable_$opt=
+done
+
+if [ -f config.status ]; then
+  . ./config.status
+fi
+
+enable() {
+  opt=`echo "$1" | sed 's/^--[^-]*-//'`
+  case "$opt" in
+    ipv6) ;;
+    *) echo "configure: unrecognized option \`$1'" >&2; exit 1;;
+  esac
+  eval enable_$opt=$2
+}
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --disable-*|--without-*|--no-*) enable "$1" n;;
+    --enable-*|--with-*) enable "$1" y;;
+    --help | --hel | --he | --h | -help | -hel | -he | -h )
+      cat <<EOF
+configure: configure $name package.
+Usage: ./configure [options]
+where options are:
+ --enable-option, --with-option --
+   enable the named option/feature
+ --disable-option, --without-option, --no-option --
+   disable the named option/feature
+ --help - print this help and exit
+Optional features (all enabled by default if system supports a feature):
+  ipv6 - enable/disable IP version 6 (IPv6) support
+EOF
+      exit 0
+      ;;
+    *) echo "configure: unknown option \`$1'" >&2; exit 1 ;;
+  esac
+  shift
+done
+
+. ./configure.lib
+
+ac_msg "configure"
+ac_result "$name package"
+
+ac_prog_c_compiler_v
+ac_prog_ranlib_v
+
+ac_ign ac_yesno "for getopt()" ac_have GETOPT ac_link <<EOF
+#include <stdio.h>
+extern int optind;
+extern char *optarg;
+extern int getopt(int, char **, char *);
+int main(int argc, char **argv) {
+  getopt(argc, argv, "abc");
+  return optarg ? optind : 0;
+}
+EOF
+
+if ac_library_find_v 'socket and connect' "" "-lsocket -lnsl" <<EOF
+int main() { socket(); connect(); return 0; }
+EOF
+then :
+else
+  ac_fatal "cannot find libraries needed for sockets"
+fi
+
+ac_ign \
+ ac_yesno "for inet_pton() && inet_ntop()" \
+ ac_have INET_PTON_NTOP \
+ ac_link <<EOF
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+int main() {
+  char buf[64];
+  long x = 0;
+  inet_pton(AF_INET, &x, buf);
+  return inet_ntop(AF_INET, &x, buf, sizeof(buf));
+} 
+EOF
+
+if ac_yesno "for socklen_t" ac_compile <<EOF
+#include <sys/types.h>
+#include <sys/socket.h>
+int foo() { socklen_t len; len = 0; return len; }
+EOF
+then :
+else
+  ac_define socklen_t int
+fi
+
+if [ n != "$enable_ipv6" ]; then
+if ac_yesno "for IPv6" ac_have IPv6 ac_compile <<EOF
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+int main() {
+  struct sockaddr_in6 sa;
+  sa.sin6_family = AF_INET6;
+  return 0;
+}
+EOF
+then :
+elif [ "$enable_ipv6" ]; then
+  ac_fatal "IPv6 is requested but not available"
+fi
+fi # !disable_ipv6?
+
+if ac_yesno "for poll()" ac_have POLL ac_link <<EOF
+#include <sys/types.h>
+#include <sys/poll.h>
+int main() {
+  struct pollfd pfd[2];
+  return poll(pfd, 2, 10);
+}
+EOF
+then :
+else
+  ac_ign ac_yesno "for sys/select.h" ac_have SYS_SELECT_H ac_cpp <<EOF
+#include <sys/types.h>
+#include <sys/select.h>
+EOF
+fi
+
+ac_config_h
+ac_output Makefile
+ac_msg "creating config.status"
+rm -f config.status
+{
+echo "# automatically generated by configure to hold command-line options"
+echo
+found=
+for opt in $options; do
+  eval val=\$enable_$opt
+  if [ -n "$val" ]; then
+    echo enable_$opt=$val
+    found=y
+  fi
+done
+if [ ! "$found" ]; then
+  echo "# (no options encountered)"
+fi
+} > config.status
+ac_result ok
+
+ac_result "all done."
+exit 0

3rdparty/udns/configure.lib

@@ -0,0 +1,268 @@
+# configure.lib
+# a library of shell routines for simple autoconf system
+#
+
+set -e
+ac_substitutes=
+rm -f conftest* config.log
+exec 5>config.log
+cat <<EOF >&5
+This file contains any messages produced by compilers etc while
+running configure, to aid debugging if configure script makes a mistake.
+
+EOF
+
+case `echo "a\c"` in
+  *c*) ac_en=-n ac_ec= ;;
+  *)   ac_en= ac_ec='\c' ;;
+esac
+
+##### Messages
+ac_msg() {
+  echo $ac_en "$*... $ac_ec"
+  echo ">>> $*" >&5
+}
+ac_checking() {
+  echo $ac_en "checking $*... $ac_ec"
+  echo ">>> checking $*" >&5
+}
+ac_result() {
+  echo "$1"
+  echo "=== $1" >&5
+}
+ac_fatal() {
+  echo "configure: fatal: $*" >&2
+  echo "=== FATAL: $*" >&5
+  exit 1
+}
+ac_warning() {
+  echo "configure: warning: $*" >&2
+  echo "=== WARNING: $*" >&5
+}
+ac_ign() {
+  "$@" || :
+}
+
+# ac_run command...
+# captures output in conftest.out
+ac_run() {
+  # apparently UnixWare (for one) /bin/sh optimizes the following "if"
+  # "away", by checking if there's such a command BEFORE redirecting
+  # output.  So error message (like "gcc: command not found") goes
+  # to stderr instead of to conftest.out, and `cat conftest.out' below
+  # fails.
+  if "$@" >conftest.out 2>&1; then
+    return 0
+  else
+    echo "==== Command invocation failed. Command line was:" >&5
+    echo "$*" >&5
+    echo "==== compiler input was:" >&5
+    cat conftest.c >&5
+    echo "==== output was:" >&5
+    cat conftest.out >&5
+    echo "====" >&5
+    return 1
+  fi
+}
+
+# common case for ac_verbose: yes/no result
+ac_yesno() {
+  ac_checking "$1"
+  shift
+  if "$@"; then
+    ac_result yes
+    return 0
+  else
+    ac_result no
+    return 1
+  fi
+}
+
+ac_subst() {
+  ac_substitutes="$ac_substitutes $*"
+}
+
+ac_define() {
+  CDEFS="$CDEFS -D$1=${2:-1}"
+}
+
+ac_have() {
+  ac_what=$1; shift
+  if "$@"; then
+    ac_define HAVE_$ac_what
+    eval ac_have_$ac_what=yes
+    return 0
+  else
+    eval ac_have_$ac_what=no
+    return 1
+  fi
+}
+
+##### Compiling, linking
+
+# run a compiler
+ac_run_compiler() {
+  rm -f conftest*; cat >conftest.c
+  ac_run $CC $CFLAGS $CDEFS "$@" conftest.c
+}
+
+ac_compile() {
+  ac_run_compiler -c
+}
+
+ac_link() {
+  ac_run_compiler -o conftest $LIBS "$@"
+}
+
+ac_cpp() {
+  ac_run_compiler -E "$@"
+}
+
+### check for C compiler.  Set $CC, $CFLAGS etc
+ac_prog_c_compiler_v() {
+  ac_checking "for C compiler"
+  rm -f conftest*
+  echo 'int main(int argc, char **argv) { return 0; }' >conftest.c
+
+  if [ -n "$CC" ]; then
+    if ac_run $CC -o conftest conftest.c && ac_run ./conftest; then
+      ac_result "\$CC ($CC)"
+    else
+      ac_result no
+      ac_fatal "\$CC ($CC) is not a working compiler"
+    fi
+  else
+    for cc in gcc cc ; do
+      if ac_run $cc -o conftest conftest.c && ac_run ./conftest; then
+        ac_result "$cc"
+        CC=$cc
+        break
+      fi
+    done
+    if [ -z "$CC" ]; then
+      ac_result no
+      ac_fatal "no working C compiler found in \$PATH. please set \$CC variable"
+    fi
+  fi
+  if [ -z "$CFLAGS" ]; then
+    if ac_yesno "whenever C compiler ($CC) is GNU CC" \
+        ac_grep_cpp yEs_mAsTeR <<EOF
+#ifdef __GNUC__
+  yEs_mAsTeR;
+#endif
+EOF
+    then
+      CFLAGS="-Wall -W -O2 -pipe"
+    else
+      CFLAGS=-O
+    fi
+  fi
+  cc="$CC $CFLAGS"
+  ccld="$cc"
+  if [ -n "$LDFLAGS" ]; then ccld="$ccld $LDFLAGS"; fi
+  if [ -n "$LIBS" ]; then ccld="$ccld $LIBS"; fi
+  if ac_yesno "whenever the C compiler ($ccld)
+           can produce executables" \
+     ac_compile_run <<EOF
+int main() { return 0; }
+EOF
+  then :
+  else
+    ac_fatal "no working C compiler found"
+  fi
+  LD='$(CC)'
+  [ -n "$AR" ] || AR=ar
+  [ -n "$ARFLAGS" ] || ARFLAGS=rv
+  [ -n "$AWK" ] || AWK=awk
+  ac_substitutes="$ac_substitutes CC CFLAGS CDEFS LD LDFLAGS LIBS AR ARFLAGS AWK"
+}
+
+
+ac_prog_ranlib_v() {
+  ac_checking "for ranlib"
+  if [ -n "$RANLIB" ]; then
+    ac_result "\$RANLIB ($RANLIB)"
+  else
+    ifs="$IFS"
+    IFS=:
+    for dir in $PATH; do
+      [ -n "$dir" ] || dir=.
+      if [ -f $dir/ranlib ]; then
+        RANLIB=ranlib
+        break
+      fi
+    done
+    IFS="$ifs"
+    if [ -z "$RANLIB" ]; then ac_result no; RANLIB=:
+    else ac_result "$RANLIB"
+    fi
+  fi
+  ac_substitutes="$ac_substitutes RANLIB"
+}
+
+ac_library_find_v() {
+  ac_checking "for libraries needed for $1"
+  shift
+  fond=
+  rm -f conftest*; cat >conftest.c
+  for lib in "$@"; do
+    if ac_run $CC $CFLAGS $LDFLAGS conftest.c -o conftest $LIBS $lib; then
+      found=y
+      break
+    fi
+  done
+  if [ ! "$found" ]; then
+    ac_result "not found"
+    return 1
+  fi
+  if [ -z "$lib" ]; then
+    ac_result "ok (none needed)"
+  else
+    ac_result "ok ($lib)"
+    LIBS="$LIBS $lib"
+  fi
+}
+
+ac_compile_run() {
+  ac_link "$@" && ac_run ./conftest
+}
+
+ac_grep_cpp() {
+  pattern="$1"; shift
+  ac_cpp "$@" && grep "$pattern" conftest.out >/dev/null
+}
+
+ac_output() {
+  for var in $ac_substitutes; do
+    eval echo "\"s|@$var@|\$$var|\""
+  done >conftest.sed
+  for file in "$@"; do
+    ac_msg "creating $file"
+    if [ -f $file.in ]; then
+      sed -f conftest.sed $file.in > $file.tmp
+      mv -f $file.tmp $file
+      ac_result ok
+    else
+      ac_result failed
+      ac_fatal "$file.in not found"
+    fi
+  done
+  rm -f conftest*
+}
+
+ac_config_h() {
+  h=${1:-config.h}
+  ac_msg "creating $h"
+  rm -f $1.tmp
+  echo "/* automatically generated by configure. */" > $h.tmp
+  echo "$CDEFS" | tr ' ' '
+' | sed -e 's/^-D/#define /' -e 's/=/ /' >> $h.tmp
+  if [ -f $h ] && cmp -s $h.tmp $h ; then
+    rm -f $h.tmp
+    ac_result unchanged
+  else
+    mv -f $h.tmp $h
+    ac_result ok
+  fi
+  CDEFS=-DHAVE_CONFIG_H
+}

3rdparty/udns/dnsget.1

@@ -0,0 +1,195 @@
+.\" dnsget.1: dnsget manpage
+.\"
+.\" Copyright (C) 2005-2014  Michael Tokarev <mjt+udns@tls.msk.ru>
+.\" This file is part of UDNS library, an async DNS stub resolver.
+.\"
+.\" This library is free software; you can redistribute it and/or
+.\" modify it under the terms of the GNU Lesser General Public
+.\" License as published by the Free Software Foundation; either
+.\" version 2.1 of the License, or (at your option) any later version.
+.\"
+.\" This library is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+.\" Lesser General Public License for more details.
+.\"
+.\" You should have received a copy of the GNU Lesser General Public
+.\" License along with this library, in file named COPYING.LGPL; if not,
+.\" write to the Free Software Foundation, Inc., 59 Temple Place,
+.\" Suite 330, Boston, MA  02111-1307  USA
+
+.TH dnsget 1 "Jan 2014" "User Utilities"
+
+.SH NAME
+dnsget \- DNS lookup utility
+
+.SH SYNOPSYS
+.B dnsget
+.RB [\| \-v \||\| \-q \|]
+.RB [\| \-c
+.IR class \|]
+.RB [\| \-t
+.IR type \|]
+.RB [\| \-o
+.IR opt , opt ,...]
+.IR name \|.\|.\|.
+
+.SH DESCRIPTION
+.B dnsget
+is a simple command-line to perform DNS lookups, similar to
+.BR host (1)
+and
+.BR dig (1).
+It is useable for both interactive/debugging scenarious and
+in scripts.
+The program is implemented using
+.BR udns (3)
+library.
+
+.PP
+By default,
+.B dnsget
+produces a human-readable output, similar to
+.RS
+.nf
+alias.example.com. CNAME www.example.com.
+www.example.com. A 192.168.1.1
+www.example.com. MX 10 mx.example.com.
+.fi
+.RE
+which is just sufficient to see how a given name resolves.
+Output format is controllable with
+.B \-v
+and
+.B \-q
+options -- the former increases verbosity level up to printing
+the whole DNS contents of all packets sent and received, which
+is suitable for debugging DNS problems, while the latter reduces
+the level, making output more quiet, up to bare result with no
+error messages, which is good for scripts.
+
+.SH OPTIONS
+
+The following options are recognized by
+.BR dnsget :
+
+.TP
+.B \-v
+produce more detailed output.  More
+.BR \-v 's
+means more details will be produced.  With single
+.BR \-v , dnsget
+will print contents of all received DNS packets (in a readable format),
+while with
+.BR \-vv ,
+it will output all outgoing DNS packets too.
+
+.TP
+.B \-q
+the opposite for \fB\-v\fR -- produce less detailed output.
+With single
+.BR \-q , dnsget
+will only show (decoded) data from final DNS resource records (RR),
+while
+.B \-qq
+also suppresses error messages.
+
+.TP
+\fB\-t \fItype\fR
+request record(s) of the given type \fItype\fR.  By default,
+.B dnsget
+will ask for IPv4 address (A) record, or for PTR record if the
+argument in question is an IPv4 or IPv6 address.  Recognized
+types include A, AAAA, MX, TXT, CNAME, PTR, NS, SOA, ANY and
+others.
+
+.TP
+\fB\-c \fIclass\fR
+request DNS record(s) of the given class \fIclass\fR.  By
+default
+.B dnsget
+uses IN class.  Valid classes include IN, CH, HS, ANY.
+
+.TP
+.B \-a
+(compatibility option).  Equivalent to setting query type to
+.B ANY
+and increasing verbosity level
+.RB ( \-v ).
+
+.TP
+.B \-C
+(planned)
+
+.TP
+.B \-x
+(planned)
+
+.TP
+\fB\-o \fIopt\fR,\fIopt\fR,...
+(may be specified several times).
+Set resolver options (in a form \fIoption\fR:\fIvalue\fR) as if they
+were set in
+.RB $ RES_OPTIONS
+environment variable, or set query flags:
+.RS
+.TP
+\fBtimeout\fR:\fIsec\fR
+Set initial query timeout to \fIsec\fR.
+.TP
+\fBattempts\fR:\fInum\fR
+(re)try every query \fInum\fR times before failing.
+.TP
+\fBudpbuf\fR:\fIbytes\fR
+set DNS UDP buffer size to \fIbytes\fR bytes.  Valid values
+are from 512 to 65535.  If \fIbytes\fR is greather than 512,
+EDNS0 (RFC 2671) extensions will be used.
+.TP
+\fBport\fR:\fInum\fR
+Use given UDP port number \fInum\fR instead of the default port 53 (domain).
+.TP
+\fBaa\fR
+set AA (auth only) query bit.
+.TP
+\fBnord\fR
+do not set RD (recursion desired) query bit (set by default).
+.TP
+\fBdnssec\fR or \fBdo\fR
+set DNSSEC OK (DO) query flag (\fBdnsget\fR does not verify DNSSEC signatures,
+only displays them; this is set in EDNS RR).
+.TP
+\fBcd\fR
+set CD (checking disabled) query bit.
+.RE
+
+.TP
+\fB\-n \fInameserver\fR
+Use the given nameserver(s) (may be specified more than once)
+instead of the default.  Using this option has the same same effect as 
+.RB $ NSCACHEIP
+or
+.RB $ NAMESERVERS
+environment variables, with the only difference that only IPv4 addresses
+are recognized for now, and it is possible to specify names (which will
+be resolved using default settings) instead of IP addresses.
+
+.TP
+.B \-h
+print short help and exit.
+
+.SH "RETURN VALUE"
+When all names where resovled successefully,
+.B dnsget
+exits with zero exit status.  If at least one name was not found,
+.B dnsget
+will exit with return code 100.  If some other error occured during
+name resolution, it will exit with code 99.  In case of usage or
+initialization error,
+.B dnsget
+will return 1.
+
+.SH "SEE ALSO"
+.BR host (1)
+.BR dig (1)
+.BR resolv.conf (5)
+.BR udns (3).

3rdparty/udns/dnsget.c

@@ -0,0 +1,759 @@
+/* dnsget.c
+   simple host/dig-like application using UDNS library
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#ifdef WINDOWS
+#include <windows.h>
+#include <winsock2.h>
+#else
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/time.h>
+#include <unistd.h>
+#endif
+#include <time.h>
+#include <stdarg.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "udns.h"
+
+#ifndef HAVE_GETOPT
+# include "getopt.c"
+#endif
+
+#ifndef AF_INET6
+# define AF_INET6 10
+#endif
+
+static char *progname;
+static int verbose = 1;
+static int errors;
+static int notfound;
+
+/* verbosity level:
+ * <0 - bare result
+ *  0 - bare result and error messages
+ *  1 - readable result
+ *  2 - received packet contents and `trying ...' stuff
+ *  3 - sent and received packet contents
+ */
+
+static void die(int errnum, const char *fmt, ...) {
+  va_list ap;
+  fprintf(stderr, "%s: ", progname);
+  va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap);
+  if (errnum) fprintf(stderr, ": %s\n", strerror(errnum));
+  else putc('\n', stderr);
+  fflush(stderr);
+  exit(1);
+}
+
+static const char *dns_xntop(int af, const void *src) {
+  static char buf[6*5+4*4];
+  return dns_ntop(af, src, buf, sizeof(buf));
+}
+
+struct query {
+  const char *name;		/* original query string */
+  unsigned char *dn;		/* the DN being looked up */
+  enum dns_type qtyp;		/* type of the query */
+};
+
+static void query_free(struct query *q) {
+  free(q->dn);
+  free(q);
+}
+
+static struct query *
+query_new(const char *name, const unsigned char *dn, enum dns_type qtyp) {
+  struct query *q = malloc(sizeof(*q));
+  unsigned l = dns_dnlen(dn);
+  unsigned char *cdn = malloc(l);
+  if (!q || !cdn) die(0, "out of memory");
+  memcpy(cdn, dn, l);
+  q->name = name;
+  q->dn = cdn;
+  q->qtyp = qtyp;
+  return q;
+}
+
+static enum dns_class qcls = DNS_C_IN;
+
+static void
+dnserror(struct query *q, int errnum) {
+  if (verbose >= 0)
+    fprintf(stderr, "%s: unable to lookup %s record for %s: %s\n", progname,
+            dns_typename(q->qtyp), dns_dntosp(q->dn), dns_strerror(errnum));
+  if (errnum == DNS_E_NXDOMAIN || errnum == DNS_E_NODATA)
+    ++notfound;
+  else
+    ++errors;
+  query_free(q);
+}
+
+static const unsigned char *
+printtxt(const unsigned char *c) {
+  unsigned n = *c++;
+  const unsigned char *e = c + n;
+  if (verbose > 0) while(c < e) {
+    if (*c < ' ' || *c >= 127) printf("\\%03u", *c);
+    else if (*c == '\\' || *c == '"') printf("\\%c", *c);
+    else putchar(*c);
+    ++c;
+  }
+  else
+   fwrite(c, n, 1, stdout);
+  return e;
+}
+
+static void
+printhex(const unsigned char *c, const unsigned char *e) {
+  while(c < e)
+    printf("%02x", *c++);
+}
+
+static unsigned char to_b64[] =
+"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+
+static void
+printb64(const unsigned char *c, const unsigned char *e) {
+  while(c < e) {
+    putchar(to_b64[c[0] >> 2]);
+    if (c+1 < e) {
+      putchar(to_b64[(c[0] & 0x3) << 4 | c[1] >> 4]);
+      if (c+2 < e) {
+        putchar(to_b64[(c[1] & 0xf) << 2 | c[2] >> 6]);
+        putchar(to_b64[c[2] & 0x3f]);
+      }
+      else {
+        putchar(to_b64[(c[1] & 0xf) << 2]);
+	putchar('=');
+	break;
+      }
+    }
+    else {
+      putchar(to_b64[(c[0] & 0x3) << 4]);
+      putchar('=');
+      putchar('=');
+      break;
+    }
+    c += 3;
+  }
+}
+
+static void
+printdate(time_t time) {
+  struct tm *tm = gmtime(&time);
+  printf("%04d%02d%02d%02d%02d%02d",
+    tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
+    tm->tm_hour, tm->tm_min, tm->tm_sec);
+}
+
+static void
+printrr(const struct dns_parse *p, struct dns_rr *rr) {
+  const unsigned char *pkt = p->dnsp_pkt;
+  const unsigned char *end = p->dnsp_end;
+  const unsigned char *dptr = rr->dnsrr_dptr;
+  const unsigned char *dend = rr->dnsrr_dend;
+  unsigned char *dn = rr->dnsrr_dn;
+  const unsigned char *c;
+  unsigned n;
+
+  if (verbose > 0) {
+    if (verbose > 1) {
+      if (!p->dnsp_rrl && !rr->dnsrr_dn[0] && rr->dnsrr_typ == DNS_T_OPT) {
+        printf(";EDNS%d OPT record (UDPsize: %d, ERcode: %d, Flags: 0x%02x): %d bytes\n",
+               (rr->dnsrr_ttl>>16) & 0xff,	/* version */
+               rr->dnsrr_cls,			/* udp size */
+               (rr->dnsrr_ttl>>24) & 0xff,	/* extended rcode */
+               rr->dnsrr_ttl & 0xffff,		/* flags */
+               rr->dnsrr_dsz);
+        return;
+      }
+      n = printf("%s.", dns_dntosp(rr->dnsrr_dn));
+      printf("%s%u\t%s\t%s\t",
+             n > 15 ? "\t" : n > 7 ? "\t\t" : "\t\t\t",
+             rr->dnsrr_ttl,
+             dns_classname(rr->dnsrr_cls),
+             dns_typename(rr->dnsrr_typ));
+    }
+    else
+      printf("%s. %s ", dns_dntosp(rr->dnsrr_dn), dns_typename(rr->dnsrr_typ));
+  }
+
+  switch(rr->dnsrr_typ) {
+
+  case DNS_T_CNAME:
+  case DNS_T_PTR:
+  case DNS_T_NS:
+  case DNS_T_MB:
+  case DNS_T_MD:
+  case DNS_T_MF:
+  case DNS_T_MG:
+  case DNS_T_MR:
+    if (dns_getdn(pkt, &dptr, end, dn, DNS_MAXDN) <= 0) goto xperr;
+    printf("%s.", dns_dntosp(dn));
+    break;
+
+  case DNS_T_A:
+    if (rr->dnsrr_dsz != 4) goto xperr;
+    printf("%d.%d.%d.%d", dptr[0], dptr[1], dptr[2], dptr[3]);
+    break;
+
+  case DNS_T_AAAA:
+    if (rr->dnsrr_dsz != 16) goto xperr;
+    printf("%s", dns_xntop(AF_INET6, dptr));
+    break;
+
+  case DNS_T_MX:
+    c = dptr + 2;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 || c != dend) goto xperr;
+    printf("%d %s.", dns_get16(dptr), dns_dntosp(dn));
+    break;
+
+  case DNS_T_TXT:
+    /* first verify it */
+    for(c = dptr; c < dend; c += n) {
+      n = *c++;
+      if (c + n > dend) goto xperr;
+    }
+    c = dptr; n = 0;
+    while (c < dend) {
+      if (verbose > 0) printf(n++ ? "\" \"":"\"");
+      c = printtxt(c);
+    }
+    if (verbose > 0) putchar('"');
+    break;
+
+  case DNS_T_HINFO:	/* CPU, OS */
+    c = dptr;
+    n = *c++; if ((c += n) >= dend) goto xperr;
+    n = *c++; if ((c += n) != dend) goto xperr;
+    c = dptr;
+    if (verbose > 0) putchar('"');
+    c = printtxt(c);
+    if (verbose > 0) printf("\" \""); else putchar(' ');
+    printtxt(c);
+    if (verbose > 0) putchar('"');
+    break;
+
+  case DNS_T_WKS:
+    c = dptr;
+    if (dptr + 4 + 2 >= end) goto xperr;
+    printf("%s %d", dns_xntop(AF_INET, dptr), dptr[4]);
+    c = dptr + 5;
+    for (n = 0; c < dend; ++c, n += 8) {
+      if (*c) {
+        unsigned b;
+        for (b = 0; b < 8; ++b)
+          if (*c & (1 << (7-b))) printf(" %d", n + b);
+      }
+    }
+    break;
+
+  case DNS_T_SRV:	/* prio weight port targetDN */
+    c = dptr;
+    c += 2 + 2 + 2;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 || c != dend) goto xperr;
+    c = dptr;
+    printf("%d %d %d %s.",
+           dns_get16(c+0), dns_get16(c+2), dns_get16(c+4),
+           dns_dntosp(dn));
+    break;
+
+  case DNS_T_NAPTR:	/* order pref flags serv regexp repl */
+    c = dptr;
+    c += 4;	/* order, pref */
+    for (n = 0; n < 3; ++n)
+      if (c >= dend) goto xperr;
+      else c += *c + 1;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 || c != dend) goto xperr;
+    c = dptr;
+    printf("%u %u", dns_get16(c+0), dns_get16(c+2));
+    c += 4;
+    for(n = 0; n < 3; ++n) {
+      putchar(' ');
+      if (verbose > 0) putchar('"');
+      c = printtxt(c);
+      if (verbose > 0) putchar('"');
+    } 
+    printf(" %s.", dns_dntosp(dn));
+    break;
+
+  case DNS_T_KEY:
+  case DNS_T_DNSKEY:
+    /* flags(2) proto(1) algo(1) pubkey */
+  case DNS_T_DS:
+  case DNS_T_DLV:
+    /* ktag(2) proto(1) algo(1) pubkey */
+    c = dptr;
+    if (c + 2 + 1 + 1 > dend) goto xperr;
+    printf("%d %d %d", dns_get16(c), c[2], c[3]);
+    c += 2 + 1 + 1;
+    if (c < dend) {
+      putchar(' ');
+      printb64(c, dend);
+    }
+    break;
+
+  case DNS_T_SIG:
+  case DNS_T_RRSIG:
+    /* type(2) algo(1) labels(1) ottl(4) sexp(4) sinc(4) tag(2) sdn sig */
+    c = dptr;
+    c += 2 + 1 + 1 + 4 + 4 + 4 + 2;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0) goto xperr;
+    printf("%s %u %u %u ",
+           dns_typename(dns_get16(dptr)), dptr[2], dptr[3], dns_get32(dptr+4));
+    printdate(dns_get32(dptr+8));
+    putchar(' ');
+    printdate(dns_get32(dptr+12));
+    printf(" %d %s. ", dns_get16(dptr+10), dns_dntosp(dn));
+    printb64(c, dend);
+    break;
+
+  case DNS_T_SSHFP: /* algo(1), fp type(1), fp... */
+    if (dend < dptr + 3) goto xperr;
+    printf("%u %u ", dptr[0], dptr[1]); /* algo, fp type */
+    printhex(dptr + 2, dend);
+    break;
+
+#if 0	/* unused RR types? */
+  case DNS_T_NSEC: /* nextDN bitmaps */
+    c = dptr;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0) goto xperr;
+    printf("%s.", dns_dntosp(dn));
+    unfinished.
+    break;
+#endif
+
+
+  case DNS_T_SOA:
+    c = dptr;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 ||
+        dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 ||
+        c + 4*5 != dend)
+      goto xperr;
+    dns_getdn(pkt, &dptr, end, dn, DNS_MAXDN);
+    printf("%s. ", dns_dntosp(dn));
+    dns_getdn(pkt, &dptr, end, dn, DNS_MAXDN);
+    printf("%s. ", dns_dntosp(dn));
+    printf("%u %u %u %u %u",
+           dns_get32(dptr), dns_get32(dptr+4), dns_get32(dptr+8),
+           dns_get32(dptr+12), dns_get32(dptr+16));
+    break;
+
+  case DNS_T_MINFO:
+    c = dptr;
+    if (dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 ||
+        dns_getdn(pkt, &c, end, dn, DNS_MAXDN) <= 0 ||
+	c != dend)
+      goto xperr;
+    dns_getdn(pkt, &dptr, end, dn, DNS_MAXDN);
+    printf("%s. ", dns_dntosp(dn));
+    dns_getdn(pkt, &dptr, end, dn, DNS_MAXDN);
+    printf("%s.", dns_dntosp(dn));
+    break;
+
+  case DNS_T_NULL:
+  default:
+    printhex(dptr, dend);
+    break;
+  }
+  putchar('\n');
+  return;
+
+xperr:
+  printf("<parse error>\n");
+  ++errors;
+}
+
+static int
+printsection(struct dns_parse *p, int nrr, const char *sname) {
+  struct dns_rr rr;
+  int r;
+  if (!nrr) return 0;
+  if (verbose > 1) printf("\n;; %s section (%d):\n", sname, nrr);
+
+  p->dnsp_rrl = nrr;
+  while((r = dns_nextrr(p, &rr)) > 0)
+    printrr(p, &rr);
+  if (r < 0) printf("<<ERROR>>\n");
+  return r;
+}
+
+/* dbgcb will only be called if verbose > 1 */
+static void
+dbgcb(int code, const struct sockaddr *sa, unsigned slen,
+      const unsigned char *pkt, int r,
+      const struct dns_query *unused_q, void *unused_data) {
+  struct dns_parse p;
+  const unsigned char *cur, *end;
+  int numqd;
+
+  if (code > 0)	{
+    printf(";; trying %s.\n", dns_dntosp(dns_payload(pkt)));
+    printf(";; sending %d bytes query to ", r);
+  }
+  else
+    printf(";; received %d bytes response from ", r);
+  if (sa->sa_family == AF_INET && slen >= sizeof(struct sockaddr_in))
+    printf("%s port %d\n",
+           dns_xntop(AF_INET, &((struct sockaddr_in*)sa)->sin_addr),
+           htons(((struct sockaddr_in*)sa)->sin_port));
+#ifdef HAVE_IPv6
+  else if (sa->sa_family == AF_INET6 && slen >= sizeof(struct sockaddr_in6))
+    printf("%s port %d\n",
+           dns_xntop(AF_INET6, &((struct sockaddr_in6*)sa)->sin6_addr),
+           htons(((struct sockaddr_in6*)sa)->sin6_port));
+#endif
+  else
+    printf("<<unknown socket type %d>>\n", sa->sa_family);
+  if (code > 0 && verbose < 3) {
+    putchar('\n');
+    return;
+  }
+
+  if (code == -2) printf(";; reply from unexpected source\n");
+  if (code == -5) printf(";; reply to a query we didn't sent (or old)\n");
+  if (r < DNS_HSIZE) {
+    printf(";; short packet (%d bytes)\n", r);
+    return;
+  }
+  if (dns_opcode(pkt) != 0)
+    printf(";; unexpected opcode %d\n", dns_opcode(pkt));
+  if (dns_tc(pkt) != 0)
+    printf(";; warning: TC bit set, probably incomplete reply\n");
+
+  printf(";; ->>HEADER<<- opcode: ");
+  switch(dns_opcode(pkt)) {
+  case 0: printf("QUERY"); break;
+  case 1: printf("IQUERY"); break;
+  case 2: printf("STATUS"); break;
+  default: printf("UNKNOWN(%u)", dns_opcode(pkt)); break;
+  }
+  printf(", status: %s, id: %d, size: %d\n;; flags:",
+         dns_rcodename(dns_rcode(pkt)), dns_qid(pkt), r);
+  if (dns_qr(pkt)) printf(" qr");
+  if (dns_aa(pkt)) printf(" aa");
+  if (dns_tc(pkt)) printf(" tc");
+  if (dns_rd(pkt)) printf(" rd");
+  if (dns_ra(pkt)) printf(" ra");
+  /* if (dns_z(pkt))  printf(" z"); only one reserved bit left */
+  if (dns_ad(pkt)) printf(" ad");
+  if (dns_cd(pkt)) printf(" cd");
+  numqd = dns_numqd(pkt);
+  printf("; QUERY: %d, ANSWER: %d, AUTHORITY: %d, ADDITIONAL: %d\n",
+         numqd, dns_numan(pkt), dns_numns(pkt), dns_numar(pkt));
+  if (numqd != 1)
+    printf(";; unexpected number of entries in QUERY section: %d\n",
+           numqd);
+  printf("\n;; QUERY SECTION (%d):\n", numqd);
+  cur = dns_payload(pkt);
+  end = pkt + r;
+  while(numqd--) {
+    if (dns_getdn(pkt, &cur, end, p.dnsp_dnbuf, DNS_MAXDN) <= 0 ||
+        cur + 4 > end) {
+      printf("; invalid query section\n");
+      return;
+    }
+    r = printf(";%s.", dns_dntosp(p.dnsp_dnbuf));
+    printf("%s%s\t%s\n",
+           r > 23 ? "\t" : r > 15 ? "\t\t" : r > 7 ? "\t\t\t" : "\t\t\t\t",
+           dns_classname(dns_get16(cur+2)), dns_typename(dns_get16(cur)));
+    cur += 4;
+  }
+
+  p.dnsp_pkt = pkt;
+  p.dnsp_cur = p.dnsp_ans = cur;
+  p.dnsp_end = end;
+  p.dnsp_qdn = NULL;
+  p.dnsp_qcls = p.dnsp_qtyp = 0;
+  p.dnsp_ttl = 0xffffffffu;
+  p.dnsp_nrr = 0;
+
+  r = printsection(&p, dns_numan(pkt), "ANSWER");
+  if (r == 0)
+    r = printsection(&p, dns_numns(pkt), "AUTHORITY");
+  if (r == 0)
+    r = printsection(&p, dns_numar(pkt), "ADDITIONAL");
+  putchar('\n');
+}
+
+static void dnscb(struct dns_ctx *ctx, void *result, void *data) {
+  int r = dns_status(ctx);
+  struct query *q = data;
+  struct dns_parse p;
+  struct dns_rr rr;
+  unsigned nrr;
+  unsigned char dn[DNS_MAXDN];
+  const unsigned char *pkt, *cur, *end;
+  if (!result) {
+    dnserror(q, r);
+    return;
+  }
+  pkt = result; end = pkt + r; cur = dns_payload(pkt);
+  dns_getdn(pkt, &cur, end, dn, sizeof(dn));
+  dns_initparse(&p, NULL, pkt, cur, end);
+  p.dnsp_qcls = p.dnsp_qtyp = 0;
+  nrr = 0;
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    if (!dns_dnequal(dn, rr.dnsrr_dn)) continue;
+    if ((qcls == DNS_C_ANY || qcls == rr.dnsrr_cls) &&
+        (q->qtyp == DNS_T_ANY || q->qtyp == rr.dnsrr_typ))
+      ++nrr;
+    else if (rr.dnsrr_typ == DNS_T_CNAME && !nrr) {
+      if (dns_getdn(pkt, &rr.dnsrr_dptr, end,
+                    p.dnsp_dnbuf, sizeof(p.dnsp_dnbuf)) <= 0 ||
+          rr.dnsrr_dptr != rr.dnsrr_dend) {
+        r = DNS_E_PROTOCOL;
+        break;
+      }
+      else {
+        if (verbose == 1) {
+          printf("%s.", dns_dntosp(dn));
+          printf(" CNAME %s.\n", dns_dntosp(p.dnsp_dnbuf));
+        }
+        dns_dntodn(p.dnsp_dnbuf, dn, sizeof(dn));
+      }
+    }
+  }
+  if (!r && !nrr)
+    r = DNS_E_NODATA;
+  if (r < 0) {
+    dnserror(q, r);
+    free(result);
+    return;
+  }
+  if (verbose < 2) {	/* else it is already printed by dbgfn */
+    dns_rewind(&p, NULL);
+    p.dnsp_qtyp = q->qtyp == DNS_T_ANY ? 0 : q->qtyp;
+    p.dnsp_qcls = qcls == DNS_C_ANY ? 0 : qcls;
+    while(dns_nextrr(&p, &rr))
+      printrr(&p, &rr);
+  }
+  free(result);
+  query_free(q);
+}
+
+int main(int argc, char **argv) {
+  int i;
+  int fd;
+  fd_set fds;
+  struct timeval tv;
+  time_t now;
+  char *ns[DNS_MAXSERV];
+  int nns = 0;
+  struct query *q;
+  enum dns_type qtyp = 0;
+  struct dns_ctx *nctx = NULL;
+  int flags = 0;
+
+  if (!(progname = strrchr(argv[0], '/'))) progname = argv[0];
+  else argv[0] = ++progname;
+
+  if (argc <= 1)
+    die(0, "try `%s -h' for help", progname);
+
+  if (dns_init(NULL, 0) < 0 || !(nctx = dns_new(NULL)))
+    die(errno, "unable to initialize dns library");
+  /* we keep two dns contexts: one may be needed to resolve
+   * nameservers if given as names, using default options.
+   */
+
+  while((i = getopt(argc, argv, "vqt:c:an:o:f:h")) != EOF) switch(i) {
+  case 'v': ++verbose; break;
+  case 'q': --verbose; break;
+  case 't':
+    if (optarg[0] == '*' && !optarg[1])
+      i = DNS_T_ANY;
+    else if ((i = dns_findtypename(optarg)) <= 0)
+      die(0, "unrecognized query type `%s'", optarg);
+    qtyp = i;
+    break;
+  case 'c':
+    if (optarg[0] == '*' && !optarg[1])
+      i = DNS_C_ANY;
+    else if ((i = dns_findclassname(optarg)) < 0)
+      die(0, "unrecognized query class `%s'", optarg);
+    qcls = i;
+    break;
+  case 'a':
+    qtyp = DNS_T_ANY;
+    ++verbose;
+    break;
+  case 'n':
+    if (nns >= DNS_MAXSERV)
+      die(0, "too many nameservers, %d max", DNS_MAXSERV);
+    ns[nns++] = optarg;
+    break;
+  case 'o':
+  case 'f': {
+    char *opt;
+    const char *const delim = " \t,;";
+    for(opt = strtok(optarg, delim); opt != NULL; opt = strtok(NULL, delim)) {
+      if (dns_set_opts(NULL, optarg) == 0)
+        ;
+      else if (strcmp(opt, "aa") == 0) flags |= DNS_AAONLY;
+      else if (strcmp(optarg, "nord") == 0) flags |= DNS_NORD;
+      else if (strcmp(optarg, "dnssec") == 0) flags |= DNS_SET_DO;
+      else if (strcmp(optarg, "do")     == 0) flags |= DNS_SET_DO;
+      else if (strcmp(optarg, "cd") == 0) flags |= DNS_SET_CD;
+      else
+        die(0, "invalid option: `%s'", opt);
+    }
+    break;
+  }
+  case 'h':
+    printf(
+"%s: simple DNS query tool (using udns version %s)\n"
+"Usage: %s [options] domain-name...\n"
+"where options are:\n"
+" -h - print this help and exit\n"
+" -v - be more verbose\n"
+" -q - be less verbose\n"
+" -t type - set query type (A, AAA, PTR etc)\n"
+" -c class - set query class (IN (default), CH, HS, *)\n"
+" -a - equivalent to -t ANY -v\n"
+" -n ns - use given nameserver(s) instead of default\n"
+"  (may be specified multiple times)\n"
+" -o opt,opt,... (comma- or space-separated list,\n"
+"                 may be specified more than once):\n"
+"  set resovler options (the same as setting $RES_OPTIONS):\n"
+"   timeout:sec  - initial query timeout\n"
+"   attempts:num - number of attempt to resovle a query\n"
+"   ndots:num    - if name has more than num dots, lookup it before search\n"
+"   port:num     - port number for queries instead of default 53\n"
+"   udpbuf:num   - size of UDP buffer (use EDNS0 if >512)\n"
+"  or query flags:\n"
+"   aa,nord,dnssec,do,cd - set query flag (auth-only, no recursion,\n"
+"     enable DNSSEC (DNSSEC Ok), check disabled)\n"
+      , progname, dns_version(), progname);
+    return 0;
+  default:
+    die(0, "try `%s -h' for help", progname);
+  }
+
+  argc -= optind; argv += optind;
+  if (!argc)
+    die(0, "no name(s) to query specified");
+
+  if (nns) {
+    /* if nameservers given as names, resolve them.
+     * We only allow IPv4 nameservers as names for now.
+     * Ok, it is easy enouth to try both AAAA and A,
+     * but the question is what to do by default.
+     */
+    struct sockaddr_in sin;
+    int j, r = 0, opened = 0;
+    memset(&sin, 0, sizeof(sin));
+    sin.sin_family = AF_INET;
+    sin.sin_port = htons(dns_set_opt(NULL, DNS_OPT_PORT, -1));
+    dns_add_serv(NULL, NULL);
+    for(i = 0; i < nns; ++i) {
+      if (dns_pton(AF_INET, ns[i], &sin.sin_addr) <= 0) {
+        struct dns_rr_a4 *rr;
+        if (!opened) {
+          if (dns_open(nctx) < 0)
+            die(errno, "unable to initialize dns context");
+          opened = 1;
+        }
+        rr = dns_resolve_a4(nctx, ns[i], 0);
+        if (!rr)
+          die(0, "unable to resolve nameserver %s: %s",
+              ns[i], dns_strerror(dns_status(nctx)));
+        for(j = 0; j < rr->dnsa4_nrr; ++j) {
+          sin.sin_addr = rr->dnsa4_addr[j];
+          if ((r = dns_add_serv_s(NULL, (struct sockaddr *)&sin)) < 0)
+            break;
+        }
+        free(rr);
+      }
+      else
+        r = dns_add_serv_s(NULL, (struct sockaddr *)&sin);
+      if (r < 0)
+        die(errno, "unable to add nameserver %s",
+             dns_xntop(AF_INET, &sin.sin_addr));
+    }
+  }
+  dns_free(nctx);
+
+  fd = dns_open(NULL);
+  if (fd < 0)
+    die(errno, "unable to initialize dns context");
+
+  if (verbose > 1)
+    dns_set_dbgfn(NULL, dbgcb);
+
+  if (flags)
+    dns_set_opt(NULL, DNS_OPT_FLAGS, flags);
+
+  for (i = 0; i < argc; ++i) {
+    char *name = argv[i];
+    union {
+      struct in_addr addr;
+      struct in6_addr addr6;
+    } a;
+    unsigned char dn[DNS_MAXDN];
+    enum dns_type l_qtyp = 0;
+    int abs;
+    if (dns_pton(AF_INET, name, &a.addr) > 0) {
+      dns_a4todn(&a.addr, 0, dn, sizeof(dn));
+      l_qtyp = DNS_T_PTR;
+      abs = 1;
+    }
+#ifdef HAVE_IPv6
+    else if (dns_pton(AF_INET6, name, &a.addr6) > 0) {
+      dns_a6todn(&a.addr6, 0, dn, sizeof(dn));
+      l_qtyp = DNS_T_PTR;
+      abs = 1;
+    }
+#endif
+    else if (!dns_ptodn(name, strlen(name), dn, sizeof(dn), &abs))
+      die(0, "invalid name `%s'\n", name);
+    else
+      l_qtyp = DNS_T_A;
+    if (qtyp) l_qtyp = qtyp;
+    q = query_new(name, dn, l_qtyp);
+    if (abs) abs = DNS_NOSRCH;
+    if (!dns_submit_dn(NULL, dn, qcls, l_qtyp, abs, 0, dnscb, q))
+      dnserror(q, dns_status(NULL));
+  }
+
+  FD_ZERO(&fds);
+  now = 0;
+  while((i = dns_timeouts(NULL, -1, now)) > 0) {
+    FD_SET(fd, &fds);
+    tv.tv_sec = i;
+    tv.tv_usec = 0;
+    i = select(fd+1, &fds, 0, 0, &tv);
+    now = time(NULL);
+    if (i > 0) dns_ioevent(NULL, now);
+  }
+
+  return errors ? 1 : notfound ? 100 : 0;
+}

3rdparty/udns/ex-rdns.c

@@ -0,0 +1,114 @@
+/* ex-rdns.c
+   parallel rDNS resolver example - read IP addresses from stdin,
+   write domain names to stdout
+ 
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <sys/poll.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <time.h>
+#include <stdlib.h>
+#include <string.h>
+#include "udns.h"
+
+static int curq;
+
+static const char *n2ip(const unsigned char *c) {
+  static char b[sizeof("255.255.255.255")];
+  sprintf(b, "%u.%u.%u.%u", c[0], c[1], c[2], c[3]);
+  return b;
+}
+static void dnscb(struct dns_ctx *ctx, struct dns_rr_ptr *rr, void *data) {
+  const char *ip = n2ip((unsigned char *)&data);
+  int i;
+  --curq;
+  if (rr) {
+    printf("%s", ip);
+    for(i = 0; i < rr->dnsptr_nrr; ++i)
+      printf(" %s", rr->dnsptr_ptr[i]);
+    putchar('\n');
+    free(rr);
+  }
+  else
+    fprintf(stderr, "%s: %s\n", ip, dns_strerror(dns_status(ctx)));
+}
+
+int main(int argc, char **argv) {
+  int c;
+  time_t now;
+  int maxq = 10;
+  struct pollfd pfd;
+  char linebuf[1024];
+  char *eol;
+  int eof;
+
+  if (dns_init(NULL, 1) < 0) {
+    fprintf(stderr, "unable to initialize dns library\n");
+    return 1;
+  }
+  while((c = getopt(argc, argv, "m:r")) != EOF) switch(c) {
+  case 'm': maxq = atoi(optarg); break;
+  case 'r':
+     dns_set_opt(0, DNS_OPT_FLAGS,
+                 dns_set_opt(0, DNS_OPT_FLAGS, -1) | DNS_NORD);
+     break;
+  default: return 1;
+  }
+  if (argc != optind) return 1;
+
+  pfd.fd = dns_sock(0);
+  pfd.events = POLLIN;
+  now = time(NULL);
+  c = optind;
+  eof = 0;
+  while(curq || !eof) {
+    if (!eof && curq < maxq) {
+      union { struct in_addr a; void *p; } pa;
+      if (!fgets(linebuf, sizeof(linebuf), stdin)) {
+        eof = 1;
+        continue;
+      }
+      eol = strchr(linebuf, '\n');
+      if (eol) *eol = '\0';
+      if (!linebuf[0]) continue;
+      if (dns_pton(AF_INET, linebuf, &pa.a) <= 0)
+        fprintf(stderr, "%s: invalid address\n", linebuf);
+      else if (dns_submit_a4ptr(0, &pa.a, dnscb, pa.p) == 0)
+        fprintf(stderr, "%s: unable to submit query: %s\n",
+                linebuf, dns_strerror(dns_status(0)));
+      else
+        ++curq;
+      continue;
+    }
+    if (curq) {
+      c = dns_timeouts(0, -1, now);
+      c = poll(&pfd, 1, c < 0 ? -1 : c * 1000);
+      now = time(NULL);
+      if (c)
+        dns_ioevent(0, now);
+    }
+  }
+  return 0;
+}

3rdparty/udns/getopt.c

@@ -0,0 +1,165 @@
+/* getopt.c
+ * Simple getopt() implementation.
+ *
+ * Standard interface:
+ *  extern int getopt(int argc, char *const *argv, const char *opts);
+ *  extern int optind;    current index in argv[]
+ *  extern char *optarg;  argument for the current option
+ *  extern int optopt;    the current option
+ *  extern int opterr;    to control error printing
+ *
+ * Some minor extensions:
+ *  ignores leading `+' sign in opts[] (unemplemented GNU extension)
+ *  handles optional arguments, in form "x::" in opts[]
+ *  if opts[] starts with `:', will return `:' in case of missing required
+ *    argument, instead of '?'.
+ *
+ * Compile with -DGETOPT_NO_OPTERR to never print errors internally.
+ * Compile with -DGETOPT_NO_STDIO to use write() calls instead of fprintf() for
+ *  error reporting (ignored with -DGETOPT_NO_OPTERR).
+ * Compile with -DGETOPT_CLASS=static to get static linkage.
+ * Compile with -DGETOPT_MY to redefine all visible symbols to be prefixed
+ *  with "my_", like my_getopt instead of getopt.
+ * Compile with -DTEST to get a test executable.
+ *
+ * Written by Michael Tokarev.  Public domain.
+ */
+
+#include <string.h>
+
+#ifndef GETOPT_CLASS
+# define GETOPT_CLASS
+#endif
+#ifdef GETOPT_MY
+# define optarg my_optarg
+# define optind my_optind
+# define opterr my_opterr
+# define optopt my_optopt
+# define getopt my_getopt
+#endif
+
+GETOPT_CLASS char *optarg /* = NULL */;
+GETOPT_CLASS int optind = 1;
+GETOPT_CLASS int opterr = 1;
+GETOPT_CLASS int optopt;
+
+static char *nextc /* = NULL */;
+
+#if defined(GETOPT_NO_OPTERR)
+
+#define printerr(argv, msg)
+
+#elif defined(GETOPT_NO_STDIO)
+
+extern int write(int, void *, int);
+
+static void printerr(char *const *argv, const char *msg) {
+  if (opterr) {
+    char buf[64];
+    unsigned pl = strlen(argv[0]);
+    unsigned ml = strlen(msg);
+    char *p;
+    if (pl + /*": "*/2 + ml + /*" -- c\n"*/6 > sizeof(buf)) {
+      write(2, argv[0], pl);
+      p = buf;
+    }
+    else {
+      memcpy(buf, argv[0], ml);
+      p = buf + pl;
+    }
+    *p++ = ':'; *p++ = ' ';
+    memcpy(p, msg, ml); p += ml;
+    *p++ = ' '; *p++ = '-'; *p++ = '-'; *p++ = ' ';
+    *p++ = optopt;
+    *p++ = '\n';
+    write(2, buf, p - buf);
+  }
+}
+
+#else
+
+#include <stdio.h>
+static void printerr(char *const *argv, const char *msg) {
+  if (opterr)
+     fprintf(stderr, "%s: %s -- %c\n", argv[0], msg, optopt);
+}
+
+#endif
+
+GETOPT_CLASS int getopt(int argc, char *const *argv, const char *opts) {
+  char *p;
+
+  optarg = 0;
+  if (*opts == '+') /* GNU extension (permutation) - isn't supported */
+    ++opts;
+
+  if (!optind) {  /* a way to reset things */
+    nextc = 0;
+    optind = 1;
+  }
+
+  if (!nextc || !*nextc) {   /* advance to the next argv element */
+    /* done scanning? */
+    if (optind >= argc)
+      return -1;
+    /* not an optional argument */
+    if (argv[optind][0] != '-')
+      return -1;
+    /* bare `-' */
+    if (argv[optind][1] == '\0')
+      return -1;
+    /* special case `--' argument */
+    if (argv[optind][1] == '-' && argv[optind][2] == '\0') {
+      ++optind;
+      return -1;
+    }
+    nextc = argv[optind] + 1;
+  }
+
+  optopt = *nextc++;
+  if (!*nextc)
+    ++optind;
+  p = strchr(opts, optopt);
+  if (!p || optopt == ':') {
+    printerr(argv, "illegal option");
+    return '?';
+  }
+  if (p[1] == ':') {
+    if (*nextc) {
+      optarg = nextc;
+      nextc = NULL;
+      ++optind;
+    }
+    else if (p[2] != ':') {	/* required argument */
+      if (optind >= argc) {
+        printerr(argv, "option requires an argument");
+        return *opts == ':' ? ':' : '?';
+      }
+      else
+        optarg = argv[optind++];
+    }
+  }
+  return optopt;
+}
+
+#ifdef TEST
+
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+  int c;
+  while((c = getopt(argc, argv, "ab:c::")) != -1) switch(c) {
+  case 'a':
+  case 'b':
+  case 'c':
+    printf("option %c %s\n", c, optarg ? optarg : "(none)");
+    break;
+  default:
+    return -1;
+  }
+  for(c = optind; c < argc; ++c)
+    printf("non-opt: %s\n", argv[c]);
+  return 0;
+}
+
+#endif

3rdparty/udns/inet_XtoX.c

@@ -0,0 +1,327 @@
+/* inet_XtoX.c
+ * Simple implementation of the following functions:
+ *  inet_ntop(), inet_ntoa(), inet_pton(), inet_aton().
+ *
+ * Differences from traditional implementaitons:
+ *  o modifies destination buffers even on error return.
+ *  o no fancy (hex, or 1.2) input support in inet_aton()
+ *  o inet_aton() does not accept junk after an IP address.
+ *  o inet_ntop(AF_INET) requires at least 16 bytes in dest,
+ *    and inet_ntop(AF_INET6) at least 40 bytes
+ *    (traditional inet_ntop() will try to fit anyway)
+ *
+ * Compile with -Dinet_XtoX_prefix=pfx_ to have pfx_*() instead of inet_*()
+ * Compile with -Dinet_XtoX_no_ntop or -Dinet_XtoX_no_pton
+ *  to disable net2str or str2net conversions.
+ *
+ * #define inet_XtoX_prototypes and #include "this_file.c"
+ * to get function prototypes only (but not for inet_ntoa()).
+ * #define inet_XtoX_decl to be `static' for static visibility,
+ * or use __declspec(dllexport) or somesuch...
+ *
+ * Compile with -DTEST to test against stock implementation.
+ *
+ * Written by Michael Tokarev.  Public domain.
+ */
+
+#ifdef inet_XtoX_prototypes
+
+struct in_addr;
+
+#else
+
+#include <errno.h>
+
+#ifdef TEST
+
+# include <netinet/in.h>
+# include <sys/socket.h>
+# include <arpa/inet.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <unistd.h>
+# include <string.h>
+# undef inet_XtoX_prefix
+# define inet_XtoX_prefix mjt_inet_
+# undef inet_XtoX_no_ntop
+# undef inet_XtoX_no_pton
+
+#else /* !TEST */
+
+struct in_addr {	/* declare it here to avoid messing with headers */
+  unsigned char x[4];
+};
+
+#endif /* TEST */
+
+#endif /* inet_XtoX_prototypes */
+
+#ifndef inet_XtoX_prefix
+# define inet_XtoX_prefix inet_
+#endif
+#ifndef inet_XtoX_decl
+# define inet_XtoX_decl /*empty*/
+#endif
+
+#define cc2_(x,y) cc2__(x,y)
+#define cc2__(x,y) x##y
+#define fn(x) cc2_(inet_XtoX_prefix,x)
+
+#ifndef inet_XtoX_no_ntop
+
+inet_XtoX_decl const char *
+fn(ntop)(int af, const void *src, char *dst, unsigned size);
+
+#ifndef inet_XtoX_prototypes
+
+static int mjt_ntop4(const void *_src, char *dst, int size) {
+  unsigned i, x, r;
+  char *p;
+  const unsigned char *s = _src;
+  if (size < 4*4)	/* for simplicity, disallow non-max-size buffer */
+    return 0;
+  for (i = 0, p = dst; i < 4; ++i) {
+    if (i) *p++ = '.';
+    x = r = s[i];
+    if (x > 99) { *p++ = (char)(r / 100 + '0'); r %= 100; }
+    if (x > 9) { *p++ = (char)(r / 10 + '0'); r %= 10; }
+    *p++ = (char)(r + '0');
+  }
+  *p = '\0';
+  return 1;
+}
+
+static char *hexc(char *p, unsigned x) {
+  static char hex[16] = "0123456789abcdef";
+  if (x > 0x0fff) *p++ = hex[(x >>12) & 15];
+  if (x > 0x00ff) *p++ = hex[(x >> 8) & 15];
+  if (x > 0x000f) *p++ = hex[(x >> 4) & 15];
+  *p++ = hex[x & 15];
+  return p;
+}
+
+static int mjt_ntop6(const void *_src, char *dst, int size) {
+  unsigned i;
+  unsigned short w[8];
+  unsigned bs = 0, cs = 0;
+  unsigned bl = 0, cl = 0;
+  char *p;
+  const unsigned char *s = _src;
+
+  if (size < 40)	/* for simplicity, disallow non-max-size buffer */
+    return 0;
+
+  for(i = 0; i < 8; ++i, s += 2) {
+    w[i] = (((unsigned short)(s[0])) << 8) | s[1];
+    if (!w[i]) {
+      if (!cl++) cs = i;
+    }
+    else {
+      if (cl > bl) bl = cl, bs = cs;
+    }
+  }
+  if (cl > bl) bl = cl, bs = cs;
+  p = dst;
+  if (bl == 1)
+    bl = 0;
+  if (bl) {
+    for(i = 0; i < bs; ++i) {
+      if (i) *p++ = ':';
+      p = hexc(p, w[i]);
+    }
+    *p++ = ':';
+    i += bl;
+    if (i == 8)
+      *p++ = ':';
+  }
+  else
+    i = 0;
+  for(; i < 8; ++i) {
+    if (i) *p++ = ':';
+    if (i == 6 && !bs && (bl == 6 || (bl == 5 && w[5] == 0xffff)))
+      return mjt_ntop4(s - 4, p, size - (p - dst));
+    p = hexc(p, w[i]);
+  }
+  *p = '\0';
+  return 1;
+}
+
+inet_XtoX_decl const char *
+fn(ntop)(int af, const void *src, char *dst, unsigned size) {
+  switch(af) {
+  /* don't use AF_*: don't mess with headers */
+  case 2:  /* AF_INET */  if (mjt_ntop4(src, dst, size)) return dst; break;
+  case 10: /* AF_INET6 */ if (mjt_ntop6(src, dst, size)) return dst; break;
+  default: errno = EAFNOSUPPORT; return (char*)0;
+  }
+  errno = ENOSPC;
+  return (char*)0;
+}
+
+inet_XtoX_decl const char *
+fn(ntoa)(struct in_addr addr) {
+  static char buf[4*4];
+  mjt_ntop4(&addr, buf, sizeof(buf));
+  return buf;
+}
+
+#endif /* inet_XtoX_prototypes */
+#endif /* inet_XtoX_no_ntop */
+
+#ifndef inet_XtoX_no_pton
+
+inet_XtoX_decl int fn(pton)(int af, const char *src, void *dst);
+inet_XtoX_decl int fn(aton)(const char *src, struct in_addr *addr);
+
+#ifndef inet_XtoX_prototypes
+
+static int mjt_pton4(const char *c, void *dst) {
+  unsigned char *a = dst;
+  unsigned n, o;
+  for (n = 0; n < 4; ++n) {
+    if (*c < '0' || *c > '9')
+      return 0;
+    o = *c++ - '0';
+    while(*c >= '0' && *c <= '9')
+      if ((o = o * 10 + (*c++ - '0')) > 255)
+        return 0;
+    if (*c++ != (n == 3 ? '\0' : '.'))
+      return 0;
+    *a++ = (unsigned char)o;
+  }
+  return 1;
+}
+
+static int mjt_pton6(const char *c, void *dst) {
+  unsigned short w[8], *a = w, *z, *i;
+  unsigned v, o;
+  const char *sc;
+  unsigned char *d = dst;
+  if (*c != ':') z = (unsigned short*)0;
+  else if (*++c != ':') return 0;
+  else ++c, z = a;
+  i = 0;
+  for(;;) {
+    v = 0;
+    sc = c;
+    for(;;) {
+      if (*c >= '0' && *c <= '9') o = *c - '0';
+      else if (*c >= 'a' && *c <= 'f') o = *c - 'a' + 10;
+      else if (*c >= 'A' && *c <= 'F') o = *c - 'A' + 10;
+      else break;
+      v = (v << 4) | o;
+      if (v > 0xffff) return 0;
+      ++c;
+    }
+    if (sc == c) {
+      if (z == a && !*c)
+        break;
+      else
+        return 0;
+    }
+    if (*c == ':') {
+      if (a >= w + 8)
+        return 0;
+      *a++ = v;
+      if (*++c == ':') {
+        if (z)
+          return 0;
+        z = a;
+        if (!*++c)
+          break;
+      }
+    }
+    else if (!*c) {
+      if (a >= w + 8)
+        return 0;
+      *a++ = v;
+      break;
+    }
+    else if (*c == '.') {
+      if (a > w + 6)
+        return 0;
+      if (!mjt_pton4(sc, d))
+        return 0;
+      *a++ = ((unsigned)(d[0]) << 8) | d[1];
+      *a++ = ((unsigned)(d[2]) << 8) | d[3];
+      break;
+    }
+    else
+      return 0;
+  }
+  v = w + 8 - a;
+  if ((v && !z) || (!v && z))
+    return 0;
+  for(i = w; ; ++i) {
+    if (i == z)
+      while(v--) { *d++ = '\0'; *d++ = '\0'; }
+    if (i >= a)
+      break;
+    *d++ = (unsigned char)((*i >> 8) & 255);
+    *d++ = (unsigned char)(*i & 255);
+  }
+  return 1;
+}
+
+inet_XtoX_decl int fn(pton)(int af, const char *src, void *dst) {
+  switch(af) {
+  /* don't use AF_*: don't mess with headers */
+  case 2  /* AF_INET  */: return mjt_pton4(src, dst);
+  case 10 /* AF_INET6 */: return mjt_pton6(src, dst);
+  default: errno = EAFNOSUPPORT; return -1;
+  }
+}
+
+inet_XtoX_decl int fn(aton)(const char *src, struct in_addr *addr) {
+  return mjt_pton4(src, addr);
+}
+
+#endif /* inet_XtoX_prototypes */
+
+#endif /* inet_XtoX_no_pton */
+
+#ifdef TEST
+
+int main(int argc, char **argv) {
+  int i;
+  char n0[16], n1[16];
+  char p0[64], p1[64];
+  int af = AF_INET;
+  int pl = sizeof(p0);
+  int r0, r1;
+  const char *s0, *s1;
+
+  while((i = getopt(argc, argv, "46a:p:")) != EOF) switch(i) {
+  case '4': af = AF_INET;  break;
+  case '6': af = AF_INET6; break;
+  case 'a': case 'p': pl = atoi(optarg); break;
+  default: return 1;
+  }
+  for(i = optind; i < argc; ++i) {
+    char *a = argv[i];
+
+    printf("%s:\n", a);
+    r0 = inet_pton(af, a, n0);
+    printf(" p2n stock: %s\n",
+     (r0 < 0 ? "(notsupp)" : !r0 ? "(inval)" : fn(ntop)(af,n0,p0,sizeof(p0))));
+    r1 = fn(pton)(af, a, n1);
+    printf(" p2n this : %s\n",
+     (r1 < 0 ? "(notsupp)" : !r1 ? "(inval)" : fn(ntop)(af,n1,p1,sizeof(p1))));
+
+    if ((r0 > 0) != (r1 > 0) ||
+        (r0 > 0 && r1 > 0 && memcmp(n0, n1, af == AF_INET ? 4 : 16) != 0))
+      printf(" DIFFER!\n");
+
+    s0 = inet_ntop(af, n1, p0, pl);
+    printf(" n2p stock: %s\n", s0 ? s0 : "(inval)");
+    s1 = fn(ntop)(af, n1, p1, pl);
+    printf(" n2p this : %s\n", s1 ? s1 : "(inval)");
+    if ((s0 != 0) != (s1 != 0) ||
+        (s0 && s1 && strcmp(s0, s1) != 0))
+      printf(" DIFFER!\n");
+
+  }
+  return 0;
+}
+
+#endif /* TEST */

3rdparty/udns/rblcheck.1

@@ -0,0 +1,151 @@
+.\" rblcheck.1
+.\" rblckeck manpage
+.\"
+.\" Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+.\" This file is part of UDNS library, an async DNS stub resolver.
+.\"
+.\" This library is free software; you can redistribute it and/or
+.\" modify it under the terms of the GNU Lesser General Public
+.\" License as published by the Free Software Foundation; either
+.\" version 2.1 of the License, or (at your option) any later version.
+.\"
+.\" This library is distributed in the hope that it will be useful,
+.\" but WITHOUT ANY WARRANTY; without even the implied warranty of
+.\" MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+.\" Lesser General Public License for more details.
+.\"
+.\" You should have received a copy of the GNU Lesser General Public
+.\" License along with this library, in file named COPYING.LGPL; if not,
+.\" write to the Free Software Foundation, Inc., 59 Temple Place,
+.\" Suite 330, Boston, MA  02111-1307  USA
+
+.TH rblckeck 1 "Apr 2005" "User Utilities"
+
+.SH NAME
+rblckeck \- DNSBL lookup utility
+
+.SH SYNOPSYS
+.B rblcheck
+.RB [\| \-s
+.IR zone \|]
+.RB [\| \-S
+.IR zone\-file \|]
+.RB [\| \-c \|]
+.RB [\| \-tmvq \|]
+.RB [\| \-n
+.IR nsaddr \|]
+.IR address \|.\|.\|.
+
+.SH DESCRIPTION
+.B rblcheck
+is a simple command-line to perform DNSBL (DNS-based blocklists) lookups.
+For every IP address (or a name, in which case it will be resolved to an
+address first), the utility verifies whenever it is listed in a (list of)
+DNS blocklists specified with
+.B \-s
+or
+.B \-S
+options, optionally obtains text assotiated with the listing (usually it
+is either some description about the reason of the listing or an URL
+referring to such a description), and displays results on standard output.
+.PP
+The program is implemented on top of
+.BR udns (3)
+library.
+
+.SH OPTIONS
+
+The following options are recognized by
+.BR rblcheck :
+
+.TP
+.B \-s \fIzone\fR
+add the given \fIzone\fR DNSBL name to the list of active zones.
+.TP
+.B \-S \fIzone-file\fR
+add list of zones from the named \fIzone-file\fR to the list of
+active zones (the file specifies one zone as the first word on a
+line, empty lines and lines starting with `#' character are ignored).
+.TP
+.B \-c
+reset active zone list.
+.TP
+.B \-v
+be more verbose, produce more detailed output.
+.TP
+.B \-q
+the opposite for \fB\-v\fR -- produce less detailed output.
+.TP
+.B \-t
+obtain text for listed addresses.
+.TP
+.B \-n \fInsaddr\fR
+Use the given nameserver (given as IPv4 or IPv6 address) instead of the
+default.  The same effect may be achieved by setting $NSCACHEIP environment
+variable.
+.TP
+.B \-m
+stop after first hit, ie after the first address which is found to be
+listed.
+
+.TP
+.B \-h
+print short help and exit.
+
+.PP
+If no
+.BR \-s ,
+.BR \-S
+and
+.B \-c
+options are given,
+.B rblcheck
+will try to obtain list of zones using $RBLCHECK_ZONES environment variable,
+or ~/.rblcheckrc, or /etc/rblckechrc files, in that order.  If no zones are
+found, it will exit unsuccessefully.
+
+.SH "RETURN VALUE"
+When no addresses given are listed and no errors occured,
+.B rblcheck
+exits with code 0.  If at least one address is listed,
+.B rblcheck
+returns 100.  In case of DNS errors,
+.B rblcheck
+returns 2.
+
+.SH ENVIRONMENT
+
+.TP
+.B $RBLCHECK_ZONES
+if no
+.BR \-s ,
+.B \-S
+or
+.B \-c
+option is given,
+.B rblcheck
+tries this variable to obtain list of DNSBL zones to check against.
+
+.SH FILES
+
+.TP
+$HOME/.rblcheckrc and /etc/rblcheckrc
+if no
+.BR \-s ,
+.B \-S
+or
+.B \-c
+option is given, and no $RBLCHECK_ZONES environment variable is set,
+.B rblcheck
+will try the two files (the first one that exists) to obtain list of
+DNSBL zones to check against.
+Each line specifies one zone (only first word in each line is used).
+Empty lines and lines starting with `#' character are ignored.
+
+.SH "SEE ALSO"
+.BR dnsget (1)
+.BR resolv.conf (5)
+.BR udns (3).
+
+.SH AUTHOR
+This program and manual pages are written by Michael Tokarev.

3rdparty/udns/rblcheck.c

@@ -0,0 +1,378 @@
+/* rblcheck.c
+   dnsbl (rbl) checker application
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef WINDOWS
+# include <winsock2.h>
+#else
+# include <unistd.h>
+# include <sys/types.h>
+# include <sys/socket.h>
+# include <netinet/in.h>
+#endif
+#include <time.h>
+#include <errno.h>
+#include <stdarg.h>
+#include "udns.h"
+
+#ifndef HAVE_GETOPT
+# include "getopt.c"
+#endif
+
+static const char *version = "udns-rblcheck 0.4";
+static char *progname;
+
+static void error(int die, const char *fmt, ...) {
+  va_list ap;
+  fprintf(stderr, "%s: ", progname);
+  va_start(ap, fmt); vfprintf(stderr, fmt, ap); va_end(ap);
+  putc('\n', stderr);
+  fflush(stderr);
+  if (die)
+    exit(1);
+}
+
+struct rblookup {
+  struct ipcheck *parent;
+  struct in_addr key;
+  const char *zone;
+  struct dns_rr_a4  *addr;
+  struct dns_rr_txt *txt;
+};
+
+struct ipcheck {
+  const char *name;
+  int naddr;
+  int listed;
+  struct rblookup *lookup;
+};
+
+#define notlisted ((void*)1)
+
+static int nzones, nzalloc;
+static const char **zones;
+
+static int do_txt;
+static int stopfirst;
+static int verbose = 1;
+/* verbosity level:
+ * <0 - only bare As/TXTs
+ * 0 - what RBL result
+ * 1(default) - what is listed by RBL: result
+ * 2          - what is[not ]listed by RBL: result, name lookups
+ */
+
+static int listed;
+static int failures;
+
+static void *ecalloc(int size, int cnt) {
+  void *t = calloc(size, cnt);
+  if (!t)
+    error(1, "out of memory");
+  return t;
+}
+
+static void addzone(const char *zone) {
+  if (nzones >= nzalloc) {
+    const char **zs = (const char**)ecalloc(sizeof(char*), (nzalloc += 16));
+    if (zones) {
+      memcpy(zs, zones, nzones * sizeof(char*));
+      free(zones);
+    }
+    zones = zs;
+  }
+  zones[nzones++] = zone;
+}
+
+static int addzonefile(const char *fname) {
+  FILE *f = fopen(fname, "r");
+  char linebuf[2048];
+  if (!f)
+    return 0;
+  while(fgets(linebuf, sizeof(linebuf), f)) {
+    char *p = linebuf, *e;
+    while(*p == ' ' || *p == '\t') ++p;
+    if (*p == '#' || *p == '\n') continue;
+    e = p;
+    while(*e && *e != ' ' && *e != '\t' && *e != '\n')
+      ++e;
+    *e++ = '\0';
+    p = memcpy(ecalloc(e - p, 1), p, e - p); // strdup
+    addzone(p);
+  }
+  fclose(f);
+  return 1;
+}
+
+static void dnserror(struct rblookup *ipl, const char *what) {
+  char buf[4*4];
+  error(0, "unable to %s for %s (%s): %s",
+          what, dns_ntop(AF_INET, &ipl->key, buf, sizeof(buf)),
+          ipl->zone, dns_strerror(dns_status(0)));
+  ++failures;
+}
+
+static void display_result(struct ipcheck *ipc) {
+  int j;
+  struct rblookup *l, *le;
+  char buf[4*4];
+  if (!ipc->naddr) return;
+  for (l = ipc->lookup, le = l + nzones * ipc->naddr; l < le; ++l) {
+    if (!l->addr) continue;
+    if (verbose < 2 && l->addr == notlisted) continue;
+    if (verbose >= 0) {
+      dns_ntop(AF_INET, &l->key, buf, sizeof(buf));
+      if (ipc->name) printf("%s[%s]", ipc->name, buf);
+      else printf("%s", buf);
+    }
+    if (l->addr == notlisted) {
+      printf(" is NOT listed by %s\n", l->zone);
+      continue;
+    }
+    else if (verbose >= 1)
+      printf(" is listed by %s: ", l->zone);
+    else if (verbose >= 0)
+      printf(" %s ", l->zone);
+    if (verbose >= 1 || !do_txt)
+      for (j = 0; j < l->addr->dnsa4_nrr; ++j)
+        printf("%s%s", j ? " " : "",
+               dns_ntop(AF_INET, &l->addr->dnsa4_addr[j], buf, sizeof(buf)));
+    if (!do_txt) ;
+    else if (l->txt) {
+      for(j = 0; j < l->txt->dnstxt_nrr; ++j) {
+        unsigned char *t = l->txt->dnstxt_txt[j].txt;
+        unsigned char *e = t + l->txt->dnstxt_txt[j].len;
+        printf("%s\"", verbose > 0 ? "\n\t" : j ? " " : "");
+        while(t < e) {
+          if (*t < ' ' || *t >= 127) printf("\\x%02x", *t);
+          else if (*t == '\\' || *t == '"') printf("\\%c", *t);
+          else putchar(*t);
+          ++t;
+        }
+        putchar('"');
+      }
+      free(l->txt);
+    }
+    else
+      printf("%s<no text available>", verbose > 0 ? "\n\t" : "");
+    free(l->addr);
+    putchar('\n');
+  }
+  free(ipc->lookup);
+}
+
+static void txtcb(struct dns_ctx *ctx, struct dns_rr_txt *r, void *data) {
+  struct rblookup *ipl = data;
+  if (r) {
+    ipl->txt = r;
+    ++ipl->parent->listed;
+  }
+  else if (dns_status(ctx) != DNS_E_NXDOMAIN)
+    dnserror(ipl, "lookup DNSBL TXT record");
+}
+
+static void a4cb(struct dns_ctx *ctx, struct dns_rr_a4 *r, void *data) {
+  struct rblookup *ipl = data;
+  if (r) {
+    ipl->addr = r;
+    ++listed;
+    if (do_txt) {
+      if (dns_submit_a4dnsbl_txt(0, &ipl->key, ipl->zone, txtcb, ipl))
+        return;
+      dnserror(ipl, "submit DNSBL TXT record");
+    }
+    ++ipl->parent->listed;
+  }
+  else if (dns_status(ctx) != DNS_E_NXDOMAIN)
+    dnserror(ipl, "lookup DNSBL A record");
+  else
+    ipl->addr = notlisted;
+}
+
+static int
+submit_a_queries(struct ipcheck *ipc,
+                 int naddr, const struct in_addr *addr) {
+  int z, a;
+  struct rblookup *rl = ecalloc(sizeof(*rl), nzones * naddr);
+  ipc->lookup = rl;
+  ipc->naddr = naddr;
+  for(a = 0; a < naddr; ++a) {
+    for(z = 0; z < nzones; ++z) {
+      rl->key = addr[a];
+      rl->zone = zones[z];
+      rl->parent = ipc;
+      if (!dns_submit_a4dnsbl(0, &rl->key, rl->zone, a4cb, rl))
+        dnserror(rl, "submit DNSBL A query");
+      ++rl;
+    }
+  }
+  return 0;
+}
+
+static void namecb(struct dns_ctx *ctx, struct dns_rr_a4 *rr, void *data) {
+  struct ipcheck *ipc = data;
+  if (rr) {
+    submit_a_queries(ipc, rr->dnsa4_nrr, rr->dnsa4_addr);
+    free(rr);
+  }
+  else {
+    error(0, "unable to lookup `%s': %s",
+          ipc->name, dns_strerror(dns_status(ctx)));
+    ++failures;
+  }
+}
+
+static int submit(struct ipcheck *ipc) {
+  struct in_addr addr;
+  if (dns_pton(AF_INET, ipc->name, &addr) > 0) {
+    submit_a_queries(ipc, 1, &addr);
+    ipc->name = NULL;
+  }
+  else if (!dns_submit_a4(0, ipc->name, 0, namecb, ipc)) {
+    error(0, "unable to submit name query for %s: %s\n",
+          ipc->name, dns_strerror(dns_status(0)));
+    ++failures;
+  }
+  return 0;
+}
+
+static void waitdns(struct ipcheck *ipc) {
+  struct timeval tv;
+  fd_set fds;
+  int c;
+  int fd = dns_sock(NULL);
+  time_t now = 0;
+  FD_ZERO(&fds);
+  while((c = dns_timeouts(NULL, -1, now)) > 0) {
+    FD_SET(fd, &fds);
+    tv.tv_sec = c;
+    tv.tv_usec = 0;
+    c = select(fd+1, &fds, NULL, NULL, &tv);
+    now = time(NULL);
+    if (c > 0)
+      dns_ioevent(NULL, now);
+    if (stopfirst && ipc->listed)
+      break;
+  }
+}
+
+int main(int argc, char **argv) {
+  int c;
+  struct ipcheck ipc;
+  char *nameserver = NULL;
+  int zgiven = 0;
+
+  if (!(progname = strrchr(argv[0], '/'))) progname = argv[0];
+  else argv[0] = ++progname;
+
+  while((c = getopt(argc, argv, "hqtvms:S:cn:")) != EOF) switch(c) {
+  case 's': ++zgiven; addzone(optarg); break;
+  case 'S':
+    ++zgiven;
+    if (addzonefile(optarg)) break;
+    error(1, "unable to read zonefile `%s'", optarg);
+  case 'c': ++zgiven; nzones = 0; break;
+  case 'q': --verbose; break;
+  case 'v': ++verbose; break;
+  case 't': do_txt = 1; break;
+  case 'n': nameserver = optarg; break;
+  case 'm': ++stopfirst; break;
+  case 'h':
+    printf("%s: %s (udns library version %s).\n",
+           progname, version, dns_version());
+    printf("Usage is: %s [options] address..\n", progname);
+    printf(
+"Where options are:\n"
+" -h - print this help and exit\n"
+" -s service - add the service (DNSBL zone) to the serice list\n"
+" -S service-file - add the DNSBL zone(s) read from the given file\n"
+" -c - clear service list\n"
+" -v - increase verbosity level (more -vs => more verbose)\n"
+" -q - decrease verbosity level (opposite of -v)\n"
+" -t - obtain and print TXT records if any\n"
+" -m - stop checking after first address match in any list\n"
+" -n ipaddr - use the given nameserver instead of the default\n"
+"(if no -s or -S option is given, use $RBLCHECK_ZONES, ~/.rblcheckrc\n"
+"or /etc/rblcheckrc in that order)\n"
+    );
+    return 0;
+  default:
+    error(1, "use `%s -h' for help", progname);
+  }
+
+  if (!zgiven) {
+    char *s = getenv("RBLCHECK_ZONES");
+    if (s) {
+      char *k;
+      s = strdup(s);
+      for(k = strtok(s, " \t"); k; k = strtok(NULL, " \t"))
+        addzone(k);
+      free(s);
+    }
+    else {	/* probably worthless on windows? */
+      char *path;
+      char *home = getenv("HOME");
+      if (!home) home = ".";
+      path = malloc(strlen(home) + 1 + sizeof(".rblcheckrc"));
+      sprintf(path, "%s/.rblcheckrc", home);
+      if (!addzonefile(path))
+        addzonefile("/etc/rblcheckrc");
+      free(path);
+    }
+  }
+  if (!nzones)
+    error(1, "no service (zone) list specified (-s or -S option)");
+
+  argv += optind;
+  argc -= optind;
+
+  if (!argc)
+    return 0;
+
+  if (dns_init(NULL, 0) < 0)
+    error(1, "unable to initialize DNS library: %s", strerror(errno));
+  if (nameserver) {
+    dns_add_serv(NULL, NULL);
+    if (dns_add_serv(NULL, nameserver) < 0)
+      error(1, "wrong IP address for a nameserver: `%s'", nameserver);
+  }
+  if (dns_open(NULL) < 0)
+    error(1, "unable to initialize DNS library: %s", strerror(errno));
+
+  for (c = 0; c < argc; ++c) {
+    if (c && (verbose > 1 || (verbose == 1 && do_txt))) putchar('\n');
+    memset(&ipc, 0, sizeof(ipc));
+    ipc.name = argv[c];
+    submit(&ipc);
+    waitdns(&ipc);
+    display_result(&ipc);
+    if (stopfirst > 1 && listed) break;
+  }
+
+  return listed ? 100 : failures ? 2 : 0;
+}

3rdparty/udns/udns.h

@@ -0,0 +1,779 @@
+/* udns.h
+   header file for the UDNS library.
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifndef UDNS_VERSION	/* include guard */
+
+#define UDNS_VERSION "0.4"
+
+#ifdef WINDOWS
+# ifdef UDNS_DYNAMIC_LIBRARY
+#  ifdef DNS_LIBRARY_BUILD
+#   define UDNS_API __declspec(dllexport)
+#   define UDNS_DATA_API __declspec(dllexport)
+#  else
+#   define UDNS_API __declspec(dllimport)
+#   define UDNS_DATA_API __declspec(dllimport)
+#  endif
+# endif
+#endif
+
+#ifndef UDNS_API
+# define UDNS_API
+#endif
+#ifndef UDNS_DATA_API
+# define UDNS_DATA_API
+#endif
+
+#include <sys/types.h>		/* for time_t */
+#include <time.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* forward declarations if sockets stuff isn't #include'd */
+struct in_addr;
+struct in6_addr;
+struct sockaddr;
+
+/**************************************************************************/
+/**************** Common definitions **************************************/
+
+UDNS_API const char *
+dns_version(void);
+
+struct dns_ctx;
+struct dns_query;
+
+/* shorthand for [const] unsigned char */
+typedef unsigned char dnsc_t;
+typedef const unsigned char dnscc_t;
+
+#define DNS_MAXDN	255	/* max DN length */
+#define DNS_DNPAD	1	/* padding for DN buffers */
+#define DNS_MAXLABEL	63	/* max DN label length */
+#define DNS_MAXNAME	1024	/* max asciiz domain name length */
+#define DNS_HSIZE	12	/* DNS packet header size */
+#define DNS_PORT	53	/* default domain port */
+#define DNS_MAXSERV	6	/* max servers to consult */
+#define DNS_MAXPACKET	512	/* max traditional-DNS UDP packet size */
+#define DNS_EDNS0PACKET	4096	/* EDNS0 packet size to use */
+
+enum dns_class {	/* DNS RR Classes */
+  DNS_C_INVALID	= 0,	/* invalid class */
+  DNS_C_IN	= 1,	/* Internet */
+  DNS_C_CH	= 3,	/* CHAOS */
+  DNS_C_HS	= 4,	/* HESIOD */
+  DNS_C_ANY	= 255	/* wildcard */
+};
+
+enum dns_type {		/* DNS RR Types */
+  DNS_T_INVALID		= 0,	/* Cookie. */
+  DNS_T_A		= 1,	/* Host address. */
+  DNS_T_NS		= 2,	/* Authoritative server. */
+  DNS_T_MD		= 3,	/* Mail destination. */
+  DNS_T_MF		= 4,	/* Mail forwarder. */
+  DNS_T_CNAME		= 5,	/* Canonical name. */
+  DNS_T_SOA		= 6,	/* Start of authority zone. */
+  DNS_T_MB		= 7,	/* Mailbox domain name. */
+  DNS_T_MG		= 8,	/* Mail group member. */
+  DNS_T_MR		= 9,	/* Mail rename name. */
+  DNS_T_NULL		= 10,	/* Null resource record. */
+  DNS_T_WKS		= 11,	/* Well known service. */
+  DNS_T_PTR		= 12,	/* Domain name pointer. */
+  DNS_T_HINFO		= 13,	/* Host information. */
+  DNS_T_MINFO		= 14,	/* Mailbox information. */
+  DNS_T_MX		= 15,	/* Mail routing information. */
+  DNS_T_TXT		= 16,	/* Text strings. */
+  DNS_T_RP		= 17,	/* Responsible person. */
+  DNS_T_AFSDB		= 18,	/* AFS cell database. */
+  DNS_T_X25		= 19,	/* X_25 calling address. */
+  DNS_T_ISDN		= 20,	/* ISDN calling address. */
+  DNS_T_RT		= 21,	/* Router. */
+  DNS_T_NSAP		= 22,	/* NSAP address. */
+  DNS_T_NSAP_PTR	= 23,	/* Reverse NSAP lookup (deprecated). */
+  DNS_T_SIG		= 24,	/* Security signature. */
+  DNS_T_KEY		= 25,	/* Security key. */
+  DNS_T_PX		= 26,	/* X.400 mail mapping. */
+  DNS_T_GPOS		= 27,	/* Geographical position (withdrawn). */
+  DNS_T_AAAA		= 28,	/* Ip6 Address. */
+  DNS_T_LOC		= 29,	/* Location Information. */
+  DNS_T_NXT		= 30,	/* Next domain (security). */
+  DNS_T_EID		= 31,	/* Endpoint identifier. */
+  DNS_T_NIMLOC		= 32,	/* Nimrod Locator. */
+  DNS_T_SRV		= 33,	/* Server Selection. */
+  DNS_T_ATMA		= 34,	/* ATM Address */
+  DNS_T_NAPTR		= 35,	/* Naming Authority PoinTeR */
+  DNS_T_KX		= 36,	/* Key Exchange */
+  DNS_T_CERT		= 37,	/* Certification record */
+  DNS_T_A6		= 38,	/* IPv6 address (deprecates AAAA) */
+  DNS_T_DNAME		= 39,	/* Non-terminal DNAME (for IPv6) */
+  DNS_T_SINK		= 40,	/* Kitchen sink (experimentatl) */
+  DNS_T_OPT		= 41,	/* EDNS0 option (meta-RR) */
+  DNS_T_DS		= 43,	/* DNSSEC */
+  DNS_T_SSHFP		= 44,
+  DNS_T_IPSECKEY	= 45,
+  DNS_T_RRSIG		= 46,	/* DNSSEC */
+  DNS_T_NSEC		= 47,	/* DNSSEC */
+  DNS_T_DNSKEY		= 48,
+  DNS_T_DHCID		= 49,
+  DNS_T_NSEC3		= 50,
+  DNS_T_NSEC3PARAMS	= 51,
+  DNS_T_TALINK		= 58, /* draft-ietf-dnsop-trust-history */
+  DNS_T_SPF		= 99,
+  DNS_T_UINFO		= 100,
+  DNS_T_UID		= 101,
+  DNS_T_GID		= 102,
+  DNS_T_UNSPEC		= 103,
+  DNS_T_TSIG		= 250,	/* Transaction signature. */
+  DNS_T_IXFR		= 251,	/* Incremental zone transfer. */
+  DNS_T_AXFR		= 252,	/* Transfer zone of authority. */
+  DNS_T_MAILB		= 253,	/* Transfer mailbox records. */
+  DNS_T_MAILA		= 254,	/* Transfer mail agent records. */
+  DNS_T_ANY		= 255,	/* Wildcard match. */
+  DNS_T_ZXFR		= 256,	/* BIND-specific, nonstandard. */
+  DNS_T_DLV		= 32769, /* RFC 4431, 5074, DNSSEC Lookaside Validation */
+  DNS_T_MAX		= 65536
+};
+
+/**************************************************************************/
+/**************** Domain Names (DNs) **************************************/
+
+/* return length of the DN */
+UDNS_API unsigned
+dns_dnlen(dnscc_t *dn);
+
+/* return #of labels in a DN */
+UDNS_API unsigned
+dns_dnlabels(dnscc_t *dn);
+
+/* lower- and uppercase single DN char */
+#define DNS_DNLC(c) ((c) >= 'A' && (c) <= 'Z' ? (c) - 'A' + 'a' : (c))
+#define DNS_DNUC(c) ((c) >= 'a' && (c) <= 'z' ? (c) - 'a' + 'A' : (c))
+
+/* compare the DNs, return dnlen of equal or 0 if not */
+UDNS_API unsigned
+dns_dnequal(dnscc_t *dn1, dnscc_t *dn2);
+
+/* copy one DN to another, size checking */
+UDNS_API unsigned
+dns_dntodn(dnscc_t *sdn, dnsc_t *ddn, unsigned ddnsiz);
+
+/* convert asciiz string of length namelen (0 to use strlen) to DN */
+UDNS_API int
+dns_ptodn(const char *name, unsigned namelen,
+          dnsc_t *dn, unsigned dnsiz, int *isabs);
+
+/* simpler form of dns_ptodn() */
+#define dns_sptodn(name,dn,dnsiz) dns_ptodn((name),0,(dn),(dnsiz),0)
+
+UDNS_DATA_API extern dnscc_t dns_inaddr_arpa_dn[14];
+#define DNS_A4RSIZE	30
+UDNS_API int
+dns_a4todn(const struct in_addr *addr, dnscc_t *tdn,
+           dnsc_t *dn, unsigned dnsiz);
+UDNS_API int
+dns_a4ptodn(const struct in_addr *addr, const char *tname,
+            dnsc_t *dn, unsigned dnsiz);
+UDNS_API dnsc_t *
+dns_a4todn_(const struct in_addr *addr, dnsc_t *dn, dnsc_t *dne);
+
+UDNS_DATA_API extern dnscc_t dns_ip6_arpa_dn[10];
+#define DNS_A6RSIZE	74
+UDNS_API int
+dns_a6todn(const struct in6_addr *addr, dnscc_t *tdn,
+           dnsc_t *dn, unsigned dnsiz);
+UDNS_API int
+dns_a6ptodn(const struct in6_addr *addr, const char *tname,
+            dnsc_t *dn, unsigned dnsiz);
+UDNS_API dnsc_t *
+dns_a6todn_(const struct in6_addr *addr, dnsc_t *dn, dnsc_t *dne);
+
+/* convert DN into asciiz string */
+UDNS_API int
+dns_dntop(dnscc_t *dn, char *name, unsigned namesiz);
+
+/* convert DN into asciiz string, using static buffer (NOT thread-safe!) */
+UDNS_API const char *
+dns_dntosp(dnscc_t *dn);
+
+/* return buffer size (incl. null byte) required for asciiz form of a DN */
+UDNS_API unsigned
+dns_dntop_size(dnscc_t *dn);
+
+/* either wrappers or reimplementations for inet_ntop() and inet_pton() */
+UDNS_API const char *dns_ntop(int af, const void *src, char *dst, int size);
+UDNS_API int dns_pton(int af, const char *src, void *dst);
+
+/**************************************************************************/
+/**************** DNS raw packet layout ***********************************/
+
+enum dns_rcode {	/* reply codes */
+  DNS_R_NOERROR		= 0,	/* ok, no error */
+  DNS_R_FORMERR		= 1,	/* format error */
+  DNS_R_SERVFAIL	= 2,	/* server failed */
+  DNS_R_NXDOMAIN	= 3,	/* domain does not exists */
+  DNS_R_NOTIMPL		= 4,	/* not implemented */
+  DNS_R_REFUSED		= 5,	/* query refused */
+  /* these are for BIND_UPDATE */
+  DNS_R_YXDOMAIN	= 6,	/* Name exists */
+  DNS_R_YXRRSET		= 7,	/* RRset exists */
+  DNS_R_NXRRSET		= 8,	/* RRset does not exist */
+  DNS_R_NOTAUTH		= 9,	/* Not authoritative for zone */
+  DNS_R_NOTZONE		= 10,	/* Zone of record different from zone section */
+  /*ns_r_max = 11,*/
+  /* The following are TSIG extended errors */
+  DNS_R_BADSIG		= 16,
+  DNS_R_BADKEY		= 17,
+  DNS_R_BADTIME		= 18
+};
+
+static __inline unsigned dns_get16(dnscc_t *s) {
+  return ((unsigned)s[0]<<8) | s[1];
+}
+static __inline unsigned dns_get32(dnscc_t *s) {
+  return ((unsigned)s[0]<<24) | ((unsigned)s[1]<<16)
+        | ((unsigned)s[2]<<8) | s[3];
+}
+static __inline dnsc_t *dns_put16(dnsc_t *d, unsigned n) {
+  *d++ = (dnsc_t)((n >> 8) & 255); *d++ = (dnsc_t)(n & 255); return d;
+}
+static __inline dnsc_t *dns_put32(dnsc_t *d, unsigned n) {
+  *d++ = (dnsc_t)((n >> 24) & 255); *d++ = (dnsc_t)((n >> 16) & 255);
+  *d++ = (dnsc_t)((n >>  8) & 255); *d++ = (dnsc_t)(n & 255);
+  return d;
+}
+
+/* DNS Header layout */
+enum {
+ /* bytes 0:1 - query ID */
+  DNS_H_QID1	= 0,
+  DNS_H_QID2	= 1,
+  DNS_H_QID	= DNS_H_QID1,
+#define dns_qid(pkt)	dns_get16((pkt)+DNS_H_QID)
+ /* byte 2: flags1 */
+  DNS_H_F1	= 2,
+  DNS_HF1_QR	= 0x80,	/* query response flag */
+#define dns_qr(pkt)	((pkt)[DNS_H_F1]&DNS_HF1_QR)
+  DNS_HF1_OPCODE = 0x78, /* opcode, 0 = query */
+#define dns_opcode(pkt)	(((pkt)[DNS_H_F1]&DNS_HF1_OPCODE)>>3)
+  DNS_HF1_AA	= 0x04,	/* auth answer */
+#define dns_aa(pkt)	((pkt)[DNS_H_F1]&DNS_HF1_AA)
+  DNS_HF1_TC	= 0x02,	/* truncation flag */
+#define dns_tc(pkt)	((pkt)[DNS_H_F1]&DNS_HF1_TC)
+  DNS_HF1_RD	= 0x01,	/* recursion desired (may be set in query) */
+#define dns_rd(pkt)	((pkt)[DNS_H_F1]&DNS_HF1_RD)
+ /* byte 3: flags2 */
+  DNS_H_F2	= 3,
+  DNS_HF2_RA	= 0x80,	/* recursion available */
+#define dns_ra(pkt)	((pkt)[DNS_H_F2]&DNS_HF2_RA)
+  DNS_HF2_Z	= 0x40,	/* reserved */
+  DNS_HF2_AD	= 0x20, /* DNSSEC: authentic data */
+#define dns_ad(pkt)	((pkt)[DNS_H_F2]&DNS_HF2_AD)
+  DNS_HF2_CD	= 0x10, /* DNSSEC: checking disabled */
+#define dns_cd(pkt)	((pkt)[DNS_H_F2]&DNS_HF2_CD)
+  DNS_HF2_RCODE	= 0x0f,	/* response code, DNS_R_XXX above */
+#define dns_rcode(pkt)	((pkt)[DNS_H_F2]&DNS_HF2_RCODE)
+ /* bytes 4:5: qdcount, numqueries */
+  DNS_H_QDCNT1	= 4,
+  DNS_H_QDCNT2	= 5,
+  DNS_H_QDCNT	= DNS_H_QDCNT1,
+#define dns_numqd(pkt)	dns_get16((pkt)+4)
+ /* bytes 6:7: ancount, numanswers */
+  DNS_H_ANCNT1	= 6,
+  DNS_H_ANCNT2	= 7,
+  DNS_H_ANCNT	= DNS_H_ANCNT1,
+#define dns_numan(pkt)	dns_get16((pkt)+6)
+ /* bytes 8:9: nscount, numauthority */
+  DNS_H_NSCNT1	= 8,
+  DNS_H_NSCNT2	= 9,
+  DNS_H_NSCNT	= DNS_H_NSCNT1,
+#define dns_numns(pkt)	dns_get16((pkt)+8)
+ /* bytes 10:11: arcount, numadditional */
+  DNS_H_ARCNT1	= 10,
+  DNS_H_ARCNT2	= 11,
+  DNS_H_ARCNT	= DNS_H_ARCNT1,
+#define dns_numar(pkt)	dns_get16((pkt)+10)
+#define dns_payload(pkt) ((pkt)+DNS_HSIZE)
+  /* EDNS0 (OPT RR) flags (Ext. Flags) */
+  DNS_EF1_DO	= 0x80, /* DNSSEC OK */
+};
+
+/* packet buffer: start at pkt, end before pkte, current pos *curp.
+ * extract a DN and set *curp to the next byte after DN in packet.
+ * return -1 on error, 0 if dnsiz is too small, or dnlen on ok.
+ */
+UDNS_API int
+dns_getdn(dnscc_t *pkt, dnscc_t **curp, dnscc_t *end,
+          dnsc_t *dn, unsigned dnsiz);
+
+/* skip the DN at position cur in packet ending before pkte,
+ * return pointer to the next byte after the DN or NULL on error */
+UDNS_API dnscc_t *
+dns_skipdn(dnscc_t *end, dnscc_t *cur);
+
+struct dns_rr {		/* DNS Resource Record */
+  dnsc_t dnsrr_dn[DNS_MAXDN];	/* the DN of the RR */
+  enum dns_class dnsrr_cls;	/* Class */
+  enum dns_type  dnsrr_typ;	/* Type */
+  unsigned dnsrr_ttl;		/* Time-To-Live (TTL) */
+  unsigned dnsrr_dsz;		/* data size */
+  dnscc_t *dnsrr_dptr;		/* pointer to start of data */
+  dnscc_t *dnsrr_dend;		/* past end of data */
+};
+
+struct dns_parse {	/* RR/packet parsing state */
+  dnscc_t *dnsp_pkt;		/* start of the packet */
+  dnscc_t *dnsp_end;		/* end of the packet */
+  dnscc_t *dnsp_cur;		/* current packet position */
+  dnscc_t *dnsp_ans;		/* start of answer section */
+  int dnsp_rrl;			/* number of RRs left to go */
+  int dnsp_nrr;			/* RR count so far */
+  unsigned dnsp_ttl;		/* TTL value so far */
+  dnscc_t *dnsp_qdn;		/* the RR DN we're looking for */
+  enum dns_class dnsp_qcls;	/* RR class we're looking for or 0 */
+  enum dns_type  dnsp_qtyp;	/* RR type we're looking for or 0 */
+  dnsc_t dnsp_dnbuf[DNS_MAXDN];	/* domain buffer */
+};
+
+/* initialize the parse structure */
+UDNS_API void
+dns_initparse(struct dns_parse *p, dnscc_t *qdn,
+              dnscc_t *pkt, dnscc_t *cur, dnscc_t *end);
+
+/* search next RR, <0=error, 0=no more RRs, >0 = found. */
+UDNS_API int
+dns_nextrr(struct dns_parse *p, struct dns_rr *rr);
+
+UDNS_API void
+dns_rewind(struct dns_parse *p, dnscc_t *qdn);
+
+
+/**************************************************************************/
+/**************** Resolver Context ****************************************/
+
+/* default resolver context */
+UDNS_DATA_API extern struct dns_ctx dns_defctx;
+
+/* reset resolver context to default state, close it if open, drop queries */
+UDNS_API void
+dns_reset(struct dns_ctx *ctx);
+
+/* reset resolver context and read in system configuration */
+UDNS_API int
+dns_init(struct dns_ctx *ctx, int do_open);
+
+/* return new resolver context with the same settings as copy */
+UDNS_API struct dns_ctx *
+dns_new(const struct dns_ctx *copy);
+
+/* free resolver context returned by dns_new(); all queries are dropped */
+UDNS_API void
+dns_free(struct dns_ctx *ctx);
+
+/* add nameserver for a resolver context (or reset nslist if serv==NULL) */
+UDNS_API int
+dns_add_serv(struct dns_ctx *ctx, const char *serv);
+
+/* add nameserver using struct sockaddr structure (with ports) */
+UDNS_API int
+dns_add_serv_s(struct dns_ctx *ctx, const struct sockaddr *sa);
+
+/* add search list element for a resolver context (or reset it if srch==NULL) */
+UDNS_API int
+dns_add_srch(struct dns_ctx *ctx, const char *srch);
+
+/* set options for a resolver context */
+UDNS_API int
+dns_set_opts(struct dns_ctx *ctx, const char *opts);
+
+enum dns_opt {		/* options */
+  DNS_OPT_FLAGS,	/* flags, DNS_F_XXX */
+  DNS_OPT_TIMEOUT,	/* timeout in secounds */
+  DNS_OPT_NTRIES,	/* number of retries */
+  DNS_OPT_NDOTS,	/* ndots */
+  DNS_OPT_UDPSIZE,	/* EDNS0 UDP size */
+  DNS_OPT_PORT,		/* port to use */
+};
+
+/* set or get (if val<0) an option */
+UDNS_API int
+dns_set_opt(struct dns_ctx *ctx, enum dns_opt opt, int val);
+
+enum dns_flags {
+  DNS_NOSRCH	= 0x00010000,	/* do not perform search */
+  DNS_NORD	= 0x00020000,	/* request no recursion */
+  DNS_AAONLY	= 0x00040000,	/* set AA flag in queries */
+  DNS_SET_DO	= 0x00080000,	/* set EDNS0 "DO" bit (DNSSEC OK) */
+  DNS_SET_CD	= 0x00100000,	/* set CD bit (DNSSEC: checking disabled) */
+};
+
+/* set the debug function pointer */
+typedef void
+(dns_dbgfn)(int code, const struct sockaddr *sa, unsigned salen,
+            dnscc_t *pkt, int plen,
+            const struct dns_query *q, void *data);
+UDNS_API void
+dns_set_dbgfn(struct dns_ctx *ctx, dns_dbgfn *dbgfn);
+
+/* open and return UDP socket */
+UDNS_API int
+dns_open(struct dns_ctx *ctx);
+
+/* return UDP socket or -1 if not open */
+UDNS_API int
+dns_sock(const struct dns_ctx *ctx);
+
+/* close the UDP socket */
+UDNS_API void
+dns_close(struct dns_ctx *ctx);
+
+/* return number of requests queued */
+UDNS_API int
+dns_active(const struct dns_ctx *ctx);
+
+/* return status of the last operation */
+UDNS_API int
+dns_status(const struct dns_ctx *ctx);
+UDNS_API void
+dns_setstatus(struct dns_ctx *ctx, int status);
+
+/* handle I/O event on UDP socket */
+UDNS_API void
+dns_ioevent(struct dns_ctx *ctx, time_t now);
+
+/* process any timeouts, return time in secounds to the
+ * next timeout (or -1 if none) but not greather than maxwait */
+UDNS_API int
+dns_timeouts(struct dns_ctx *ctx, int maxwait, time_t now);
+
+/* define timer requesting routine to use */
+typedef void dns_utm_fn(struct dns_ctx *ctx, int timeout, void *data);
+UDNS_API void
+dns_set_tmcbck(struct dns_ctx *ctx, dns_utm_fn *fn, void *data);
+
+/**************************************************************************/
+/**************** Making Queries ******************************************/
+
+/* query callback routine */
+typedef void dns_query_fn(struct dns_ctx *ctx, void *result, void *data);
+
+/* query parse routine: raw DNS => application structure */
+typedef int
+dns_parse_fn(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+             void **res);
+
+enum dns_status {
+  DNS_E_NOERROR		= 0,	/* ok, not an error */
+  DNS_E_TEMPFAIL	= -1,	/* timeout, SERVFAIL or similar */
+  DNS_E_PROTOCOL	= -2,	/* got garbled reply */
+  DNS_E_NXDOMAIN	= -3,	/* domain does not exists */
+  DNS_E_NODATA		= -4,	/* domain exists but no data of reqd type */
+  DNS_E_NOMEM		= -5,	/* out of memory while processing */
+  DNS_E_BADQUERY	= -6	/* the query is malformed */
+};
+
+/* submit generic DN query */
+UDNS_API struct dns_query *
+dns_submit_dn(struct dns_ctx *ctx,
+              dnscc_t *dn, int qcls, int qtyp, int flags,
+              dns_parse_fn *parse, dns_query_fn *cbck, void *data);
+/* submit generic name query */
+UDNS_API struct dns_query *
+dns_submit_p(struct dns_ctx *ctx,
+             const char *name, int qcls, int qtyp, int flags,
+             dns_parse_fn *parse, dns_query_fn *cbck, void *data);
+
+/* cancel the given async query in progress */
+UDNS_API int
+dns_cancel(struct dns_ctx *ctx, struct dns_query *q);
+
+/* resolve a generic query, return the answer */
+UDNS_API void *
+dns_resolve_dn(struct dns_ctx *ctx,
+               dnscc_t *qdn, int qcls, int qtyp, int flags,
+               dns_parse_fn *parse);
+UDNS_API void *
+dns_resolve_p(struct dns_ctx *ctx,
+              const char *qname, int qcls, int qtyp, int flags,
+              dns_parse_fn *parse);
+UDNS_API void *
+dns_resolve(struct dns_ctx *ctx, struct dns_query *q);
+
+
+/* Specific RR handlers */
+
+#define dns_rr_common(prefix)						\
+  char *prefix##_cname;		/* canonical name */			\
+  char *prefix##_qname;		/* original query name */		\
+  unsigned prefix##_ttl;	/* TTL value */				\
+  int prefix##_nrr		/* number of records */
+
+struct dns_rr_null {		/* NULL RRset, aka RRset template */
+  dns_rr_common(dnsn);
+};
+
+UDNS_API int
+dns_stdrr_size(const struct dns_parse *p);
+UDNS_API void *
+dns_stdrr_finish(struct dns_rr_null *ret, char *cp, const struct dns_parse *p);
+
+struct dns_rr_a4 {		/* the A RRset */
+  dns_rr_common(dnsa4);
+  struct in_addr *dnsa4_addr;	/* array of addresses, naddr elements */
+};
+
+UDNS_API dns_parse_fn dns_parse_a4;	/* A RR parsing routine */
+typedef void				/* A query callback routine */
+dns_query_a4_fn(struct dns_ctx *ctx, struct dns_rr_a4 *result, void *data);
+
+/* submit A IN query */
+UDNS_API struct dns_query *
+dns_submit_a4(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_a4_fn *cbck, void *data);
+
+/* resolve A IN query */
+UDNS_API struct dns_rr_a4 *
+dns_resolve_a4(struct dns_ctx *ctx, const char *name, int flags);
+
+
+struct dns_rr_a6 {		/* the AAAA RRset */
+  dns_rr_common(dnsa6);
+  struct in6_addr *dnsa6_addr;	/* array of addresses, naddr elements */
+};
+
+UDNS_API dns_parse_fn dns_parse_a6;	/* A RR parsing routine */
+typedef void				/* A query callback routine */
+dns_query_a6_fn(struct dns_ctx *ctx, struct dns_rr_a6 *result, void *data);
+
+/* submit AAAA IN query */
+UDNS_API struct dns_query *
+dns_submit_a6(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_a6_fn *cbck, void *data);
+
+/* resolve AAAA IN query */
+UDNS_API struct dns_rr_a6 *
+dns_resolve_a6(struct dns_ctx *ctx, const char *name, int flags);
+
+
+struct dns_rr_ptr {		/* the PTR RRset */
+  dns_rr_common(dnsptr);
+  char **dnsptr_ptr;		/* array of PTRs */
+};
+
+UDNS_API dns_parse_fn dns_parse_ptr;	/* PTR RR parsing routine */
+typedef void				/* PTR query callback */
+dns_query_ptr_fn(struct dns_ctx *ctx, struct dns_rr_ptr *result, void *data);
+/* submit PTR IN in-addr.arpa query */
+UDNS_API struct dns_query *
+dns_submit_a4ptr(struct dns_ctx *ctx, const struct in_addr *addr,
+                 dns_query_ptr_fn *cbck, void *data);
+/* resolve PTR IN in-addr.arpa query */
+UDNS_API struct dns_rr_ptr *
+dns_resolve_a4ptr(struct dns_ctx *ctx, const struct in_addr *addr);
+
+/* the same as above, but for ip6.arpa */
+UDNS_API struct dns_query *
+dns_submit_a6ptr(struct dns_ctx *ctx, const struct in6_addr *addr,
+                 dns_query_ptr_fn *cbck, void *data);
+UDNS_API struct dns_rr_ptr *
+dns_resolve_a6ptr(struct dns_ctx *ctx, const struct in6_addr *addr);
+
+
+struct dns_mx {		/* single MX RR */
+  int priority;		/* MX priority */
+  char *name;		/* MX name */
+};
+struct dns_rr_mx {		/* the MX RRset */
+  dns_rr_common(dnsmx);
+  struct dns_mx *dnsmx_mx;	/* array of MXes */
+};
+UDNS_API dns_parse_fn dns_parse_mx;	/* MX RR parsing routine */
+typedef void				/* MX RR callback */
+dns_query_mx_fn(struct dns_ctx *ctx, struct dns_rr_mx *result, void *data);
+/* submit MX IN query */
+UDNS_API struct dns_query *
+dns_submit_mx(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_mx_fn *cbck, void *data);
+/* resolve MX IN query */
+UDNS_API struct dns_rr_mx *
+dns_resolve_mx(struct dns_ctx *ctx, const char *name, int flags);
+
+
+struct dns_txt {	/* single TXT record */
+  int len;		/* length of the text */
+  dnsc_t *txt;	/* pointer to text buffer. May contain nulls. */
+};
+struct dns_rr_txt {		/* the TXT RRset */
+  dns_rr_common(dnstxt);
+  struct dns_txt *dnstxt_txt;	/* array of TXT records */
+};
+UDNS_API dns_parse_fn dns_parse_txt;	/* TXT RR parsing routine */
+typedef void				/* TXT RR callback */
+dns_query_txt_fn(struct dns_ctx *ctx, struct dns_rr_txt *result, void *data);
+/* submit TXT query */
+UDNS_API struct dns_query *
+dns_submit_txt(struct dns_ctx *ctx, const char *name, int qcls, int flags,
+               dns_query_txt_fn *cbck, void *data);
+/* resolve TXT query */
+UDNS_API struct dns_rr_txt *
+dns_resolve_txt(struct dns_ctx *ctx, const char *name, int qcls, int flags);
+
+
+struct dns_srv {	/* single SRV RR */
+  int priority;		/* SRV priority */
+  int weight;		/* SRV weight */
+  int port;		/* SRV port */
+  char *name;		/* SRV name */
+};
+struct dns_rr_srv {		/* the SRV RRset */
+  dns_rr_common(dnssrv);
+  struct dns_srv *dnssrv_srv;	/* array of SRVes */
+};
+UDNS_API dns_parse_fn dns_parse_srv;	/* SRV RR parsing routine */
+typedef void				/* SRV RR callback */
+dns_query_srv_fn(struct dns_ctx *ctx, struct dns_rr_srv *result, void *data);
+/* submit SRV IN query */
+UDNS_API struct dns_query *
+dns_submit_srv(struct dns_ctx *ctx,
+               const char *name, const char *srv, const char *proto,
+               int flags, dns_query_srv_fn *cbck, void *data);
+/* resolve SRV IN query */
+UDNS_API struct dns_rr_srv *
+dns_resolve_srv(struct dns_ctx *ctx,
+                const char *name, const char *srv, const char *proto,
+                int flags);
+
+/* NAPTR (RFC3403) RR type */
+struct dns_naptr {	/* single NAPTR RR */
+  int order;		/* NAPTR order */
+  int preference;	/* NAPTR preference */
+  char *flags;		/* NAPTR flags */
+  char *service;	/* NAPTR service */
+  char *regexp;		/* NAPTR regexp */
+  char *replacement;	/* NAPTR replacement */
+};
+
+struct dns_rr_naptr {		/* the NAPTR RRset */
+  dns_rr_common(dnsnaptr);
+  struct dns_naptr *dnsnaptr_naptr;	/* array of NAPTRes */
+};
+UDNS_API dns_parse_fn dns_parse_naptr;	/* NAPTR RR parsing routine */
+typedef void				/* NAPTR RR callback */
+dns_query_naptr_fn(struct dns_ctx *ctx,
+                   struct dns_rr_naptr *result, void *data);
+/* submit NAPTR IN query */
+UDNS_API struct dns_query *
+dns_submit_naptr(struct dns_ctx *ctx, const char *name, int flags,
+                 dns_query_naptr_fn *cbck, void *data);
+/* resolve NAPTR IN query */
+UDNS_API struct dns_rr_naptr *
+dns_resolve_naptr(struct dns_ctx *ctx, const char *name, int flags);
+
+
+UDNS_API struct dns_query *
+dns_submit_a4dnsbl(struct dns_ctx *ctx,
+                   const struct in_addr *addr, const char *dnsbl,
+                   dns_query_a4_fn *cbck, void *data);
+UDNS_API struct dns_query *
+dns_submit_a4dnsbl_txt(struct dns_ctx *ctx,
+                       const struct in_addr *addr, const char *dnsbl,
+                       dns_query_txt_fn *cbck, void *data);
+UDNS_API struct dns_rr_a4 *
+dns_resolve_a4dnsbl(struct dns_ctx *ctx,
+                    const struct in_addr *addr, const char *dnsbl);
+UDNS_API struct dns_rr_txt *
+dns_resolve_a4dnsbl_txt(struct dns_ctx *ctx,
+                        const struct in_addr *addr, const char *dnsbl);
+
+UDNS_API struct dns_query *
+dns_submit_a6dnsbl(struct dns_ctx *ctx,
+                   const struct in6_addr *addr, const char *dnsbl,
+                   dns_query_a4_fn *cbck, void *data);
+UDNS_API struct dns_query *
+dns_submit_a6dnsbl_txt(struct dns_ctx *ctx,
+                       const struct in6_addr *addr, const char *dnsbl,
+                       dns_query_txt_fn *cbck, void *data);
+UDNS_API struct dns_rr_a4 *
+dns_resolve_a6dnsbl(struct dns_ctx *ctx,
+                    const struct in6_addr *addr, const char *dnsbl);
+UDNS_API struct dns_rr_txt *
+dns_resolve_a6dnsbl_txt(struct dns_ctx *ctx,
+                        const struct in6_addr *addr, const char *dnsbl);
+
+UDNS_API struct dns_query *
+dns_submit_rhsbl(struct dns_ctx *ctx,
+                 const char *name, const char *rhsbl,
+                 dns_query_a4_fn *cbck, void *data);
+UDNS_API struct dns_query *
+dns_submit_rhsbl_txt(struct dns_ctx *ctx,
+                     const char *name, const char *rhsbl,
+                     dns_query_txt_fn *cbck, void *data);
+UDNS_API struct dns_rr_a4 *
+dns_resolve_rhsbl(struct dns_ctx *ctx, const char *name, const char *rhsbl);
+UDNS_API struct dns_rr_txt *
+dns_resolve_rhsbl_txt(struct dns_ctx *ctx, const char *name, const char *rhsbl);
+
+/**************************************************************************/
+/**************** Names, Names ********************************************/
+
+struct dns_nameval {
+  int val;
+  const char *name;
+};
+
+UDNS_DATA_API extern const struct dns_nameval dns_classtab[];
+UDNS_DATA_API extern const struct dns_nameval dns_typetab[];
+UDNS_DATA_API extern const struct dns_nameval dns_rcodetab[];
+UDNS_API int
+dns_findname(const struct dns_nameval *nv, const char *name);
+#define dns_findclassname(cls) dns_findname(dns_classtab, (cls))
+#define dns_findtypename(type) dns_findname(dns_typetab, (type))
+#define dns_findrcodename(rcode) dns_findname(dns_rcodetab, (rcode))
+
+UDNS_API const char *dns_classname(enum dns_class cls);
+UDNS_API const char *dns_typename(enum dns_type type);
+UDNS_API const char *dns_rcodename(enum dns_rcode rcode);
+const char *_dns_format_code(char *buf, const char *prefix, int code);
+
+UDNS_API const char *dns_strerror(int errnum);
+
+/* simple pseudo-random number generator, code by Bob Jenkins */
+
+struct udns_jranctx {	/* the context */
+  unsigned a, b, c, d;
+};
+
+/* initialize the RNG with a given seed */
+UDNS_API void
+udns_jraninit(struct udns_jranctx *x, unsigned seed);
+
+/* return next random number.  32bits on most platforms so far. */
+UDNS_API unsigned
+udns_jranval(struct udns_jranctx *x);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif
+
+#endif	/* include guard */

3rdparty/udns/udns_XtoX.c

@@ -0,0 +1,50 @@
+/* udns_XtoX.c
+   udns_ntop() and udns_pton() routines, which are either
+     - wrappers for inet_ntop() and inet_pton() or
+     - reimplementations of those routines.
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include "udns.h"
+
+#ifdef HAVE_INET_PTON_NTOP
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+
+const char *dns_ntop(int af, const void *src, char *dst, int size) {
+  return inet_ntop(af, src, dst, size);
+}
+
+int dns_pton(int af, const char *src, void *dst) {
+  return inet_pton(af, src, dst);
+}
+
+#else
+#define inet_XtoX_no_ntop
+#define inet_XtoX_prefix dns_
+#include "inet_XtoX.c"
+
+#endif

3rdparty/udns/udns_bl.c

@@ -0,0 +1,160 @@
+/* udns_bl.c
+   DNSBL stuff
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include "udns.h"
+#ifndef NULL
+# define NULL 0
+#endif
+
+struct dns_query *
+dns_submit_a4dnsbl(struct dns_ctx *ctx,
+                   const struct in_addr *addr, const char *dnsbl,
+                   dns_query_a4_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (dns_a4ptodn(addr, dnsbl, dn, sizeof(dn)) <= 0) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_A, DNS_NOSRCH,
+                  dns_parse_a4, (dns_query_fn*)cbck, data);
+}
+
+struct dns_query *
+dns_submit_a4dnsbl_txt(struct dns_ctx *ctx,
+                       const struct in_addr *addr, const char *dnsbl,
+                       dns_query_txt_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (dns_a4ptodn(addr, dnsbl, dn, sizeof(dn)) <= 0) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_TXT, DNS_NOSRCH,
+                  dns_parse_txt, (dns_query_fn*)cbck, data);
+}
+
+struct dns_rr_a4 *
+dns_resolve_a4dnsbl(struct dns_ctx *ctx,
+                    const struct in_addr *addr, const char *dnsbl) {
+  return (struct dns_rr_a4 *)
+    dns_resolve(ctx, dns_submit_a4dnsbl(ctx, addr, dnsbl, 0, 0));
+}
+
+struct dns_rr_txt *
+dns_resolve_a4dnsbl_txt(struct dns_ctx *ctx,
+                        const struct in_addr *addr, const char *dnsbl) {
+  return (struct dns_rr_txt *)
+    dns_resolve(ctx, dns_submit_a4dnsbl_txt(ctx, addr, dnsbl, 0, 0));
+}
+
+
+struct dns_query *
+dns_submit_a6dnsbl(struct dns_ctx *ctx,
+                   const struct in6_addr *addr, const char *dnsbl,
+                   dns_query_a4_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (dns_a6ptodn(addr, dnsbl, dn, sizeof(dn)) <= 0) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_A, DNS_NOSRCH,
+                  dns_parse_a4, (dns_query_fn*)cbck, data);
+}
+
+struct dns_query *
+dns_submit_a6dnsbl_txt(struct dns_ctx *ctx,
+                       const struct in6_addr *addr, const char *dnsbl,
+                       dns_query_txt_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (dns_a6ptodn(addr, dnsbl, dn, sizeof(dn)) <= 0) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_TXT, DNS_NOSRCH,
+                  dns_parse_txt, (dns_query_fn*)cbck, data);
+}
+
+struct dns_rr_a4 *
+dns_resolve_a6dnsbl(struct dns_ctx *ctx,
+                    const struct in6_addr *addr, const char *dnsbl) {
+  return (struct dns_rr_a4 *)
+    dns_resolve(ctx, dns_submit_a6dnsbl(ctx, addr, dnsbl, 0, 0));
+}
+
+struct dns_rr_txt *
+dns_resolve_a6dnsbl_txt(struct dns_ctx *ctx,
+                        const struct in6_addr *addr, const char *dnsbl) {
+  return (struct dns_rr_txt *)
+    dns_resolve(ctx, dns_submit_a6dnsbl_txt(ctx, addr, dnsbl, 0, 0));
+}
+
+static int
+dns_rhsbltodn(const char *name, const char *rhsbl, dnsc_t dn[DNS_MAXDN])
+{
+  int l = dns_sptodn(name, dn, DNS_MAXDN);
+  if (l <= 0) return 0;
+  l = dns_sptodn(rhsbl, dn+l-1, DNS_MAXDN-l+1);
+  if (l <= 0) return 0;
+  return 1;
+}
+
+struct dns_query *
+dns_submit_rhsbl(struct dns_ctx *ctx, const char *name, const char *rhsbl,
+                 dns_query_a4_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (!dns_rhsbltodn(name, rhsbl, dn)) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_A, DNS_NOSRCH,
+                  dns_parse_a4, (dns_query_fn*)cbck, data);
+}
+struct dns_query *
+dns_submit_rhsbl_txt(struct dns_ctx *ctx, const char *name, const char *rhsbl,
+                     dns_query_txt_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  if (!dns_rhsbltodn(name, rhsbl, dn)) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_TXT, DNS_NOSRCH,
+                  dns_parse_txt, (dns_query_fn*)cbck, data);
+}
+
+struct dns_rr_a4 *
+dns_resolve_rhsbl(struct dns_ctx *ctx, const char *name, const char *rhsbl) {
+  return (struct dns_rr_a4*)
+    dns_resolve(ctx, dns_submit_rhsbl(ctx, name, rhsbl, 0, 0));
+}
+
+struct dns_rr_txt *
+dns_resolve_rhsbl_txt(struct dns_ctx *ctx, const char *name, const char *rhsbl)
+{
+  return (struct dns_rr_txt*)
+    dns_resolve(ctx, dns_submit_rhsbl_txt(ctx, name, rhsbl, 0, 0));
+}

3rdparty/udns/udns_codes.c

@@ -0,0 +1,199 @@
+/* Automatically generated. */
+#include "udns.h"
+
+const struct dns_nameval dns_typetab[] = {
+ {DNS_T_INVALID,"INVALID"},
+ {DNS_T_A,"A"},
+ {DNS_T_NS,"NS"},
+ {DNS_T_MD,"MD"},
+ {DNS_T_MF,"MF"},
+ {DNS_T_CNAME,"CNAME"},
+ {DNS_T_SOA,"SOA"},
+ {DNS_T_MB,"MB"},
+ {DNS_T_MG,"MG"},
+ {DNS_T_MR,"MR"},
+ {DNS_T_NULL,"NULL"},
+ {DNS_T_WKS,"WKS"},
+ {DNS_T_PTR,"PTR"},
+ {DNS_T_HINFO,"HINFO"},
+ {DNS_T_MINFO,"MINFO"},
+ {DNS_T_MX,"MX"},
+ {DNS_T_TXT,"TXT"},
+ {DNS_T_RP,"RP"},
+ {DNS_T_AFSDB,"AFSDB"},
+ {DNS_T_X25,"X25"},
+ {DNS_T_ISDN,"ISDN"},
+ {DNS_T_RT,"RT"},
+ {DNS_T_NSAP,"NSAP"},
+ {DNS_T_NSAP_PTR,"NSAP_PTR"},
+ {DNS_T_SIG,"SIG"},
+ {DNS_T_KEY,"KEY"},
+ {DNS_T_PX,"PX"},
+ {DNS_T_GPOS,"GPOS"},
+ {DNS_T_AAAA,"AAAA"},
+ {DNS_T_LOC,"LOC"},
+ {DNS_T_NXT,"NXT"},
+ {DNS_T_EID,"EID"},
+ {DNS_T_NIMLOC,"NIMLOC"},
+ {DNS_T_SRV,"SRV"},
+ {DNS_T_ATMA,"ATMA"},
+ {DNS_T_NAPTR,"NAPTR"},
+ {DNS_T_KX,"KX"},
+ {DNS_T_CERT,"CERT"},
+ {DNS_T_A6,"A6"},
+ {DNS_T_DNAME,"DNAME"},
+ {DNS_T_SINK,"SINK"},
+ {DNS_T_OPT,"OPT"},
+ {DNS_T_DS,"DS"},
+ {DNS_T_SSHFP,"SSHFP"},
+ {DNS_T_IPSECKEY,"IPSECKEY"},
+ {DNS_T_RRSIG,"RRSIG"},
+ {DNS_T_NSEC,"NSEC"},
+ {DNS_T_DNSKEY,"DNSKEY"},
+ {DNS_T_DHCID,"DHCID"},
+ {DNS_T_NSEC3,"NSEC3"},
+ {DNS_T_NSEC3PARAMS,"NSEC3PARAMS"},
+ {DNS_T_TALINK,"TALINK"},
+ {DNS_T_SPF,"SPF"},
+ {DNS_T_UINFO,"UINFO"},
+ {DNS_T_UID,"UID"},
+ {DNS_T_GID,"GID"},
+ {DNS_T_UNSPEC,"UNSPEC"},
+ {DNS_T_TSIG,"TSIG"},
+ {DNS_T_IXFR,"IXFR"},
+ {DNS_T_AXFR,"AXFR"},
+ {DNS_T_MAILB,"MAILB"},
+ {DNS_T_MAILA,"MAILA"},
+ {DNS_T_ANY,"ANY"},
+ {DNS_T_ZXFR,"ZXFR"},
+ {DNS_T_DLV,"DLV"},
+ {DNS_T_MAX,"MAX"},
+ {0,0}};
+const char *dns_typename(enum dns_type code) {
+ static char nm[20];
+ switch(code) {
+ case DNS_T_INVALID: return dns_typetab[0].name;
+ case DNS_T_A: return dns_typetab[1].name;
+ case DNS_T_NS: return dns_typetab[2].name;
+ case DNS_T_MD: return dns_typetab[3].name;
+ case DNS_T_MF: return dns_typetab[4].name;
+ case DNS_T_CNAME: return dns_typetab[5].name;
+ case DNS_T_SOA: return dns_typetab[6].name;
+ case DNS_T_MB: return dns_typetab[7].name;
+ case DNS_T_MG: return dns_typetab[8].name;
+ case DNS_T_MR: return dns_typetab[9].name;
+ case DNS_T_NULL: return dns_typetab[10].name;
+ case DNS_T_WKS: return dns_typetab[11].name;
+ case DNS_T_PTR: return dns_typetab[12].name;
+ case DNS_T_HINFO: return dns_typetab[13].name;
+ case DNS_T_MINFO: return dns_typetab[14].name;
+ case DNS_T_MX: return dns_typetab[15].name;
+ case DNS_T_TXT: return dns_typetab[16].name;
+ case DNS_T_RP: return dns_typetab[17].name;
+ case DNS_T_AFSDB: return dns_typetab[18].name;
+ case DNS_T_X25: return dns_typetab[19].name;
+ case DNS_T_ISDN: return dns_typetab[20].name;
+ case DNS_T_RT: return dns_typetab[21].name;
+ case DNS_T_NSAP: return dns_typetab[22].name;
+ case DNS_T_NSAP_PTR: return dns_typetab[23].name;
+ case DNS_T_SIG: return dns_typetab[24].name;
+ case DNS_T_KEY: return dns_typetab[25].name;
+ case DNS_T_PX: return dns_typetab[26].name;
+ case DNS_T_GPOS: return dns_typetab[27].name;
+ case DNS_T_AAAA: return dns_typetab[28].name;
+ case DNS_T_LOC: return dns_typetab[29].name;
+ case DNS_T_NXT: return dns_typetab[30].name;
+ case DNS_T_EID: return dns_typetab[31].name;
+ case DNS_T_NIMLOC: return dns_typetab[32].name;
+ case DNS_T_SRV: return dns_typetab[33].name;
+ case DNS_T_ATMA: return dns_typetab[34].name;
+ case DNS_T_NAPTR: return dns_typetab[35].name;
+ case DNS_T_KX: return dns_typetab[36].name;
+ case DNS_T_CERT: return dns_typetab[37].name;
+ case DNS_T_A6: return dns_typetab[38].name;
+ case DNS_T_DNAME: return dns_typetab[39].name;
+ case DNS_T_SINK: return dns_typetab[40].name;
+ case DNS_T_OPT: return dns_typetab[41].name;
+ case DNS_T_DS: return dns_typetab[42].name;
+ case DNS_T_SSHFP: return dns_typetab[43].name;
+ case DNS_T_IPSECKEY: return dns_typetab[44].name;
+ case DNS_T_RRSIG: return dns_typetab[45].name;
+ case DNS_T_NSEC: return dns_typetab[46].name;
+ case DNS_T_DNSKEY: return dns_typetab[47].name;
+ case DNS_T_DHCID: return dns_typetab[48].name;
+ case DNS_T_NSEC3: return dns_typetab[49].name;
+ case DNS_T_NSEC3PARAMS: return dns_typetab[50].name;
+ case DNS_T_TALINK: return dns_typetab[51].name;
+ case DNS_T_SPF: return dns_typetab[52].name;
+ case DNS_T_UINFO: return dns_typetab[53].name;
+ case DNS_T_UID: return dns_typetab[54].name;
+ case DNS_T_GID: return dns_typetab[55].name;
+ case DNS_T_UNSPEC: return dns_typetab[56].name;
+ case DNS_T_TSIG: return dns_typetab[57].name;
+ case DNS_T_IXFR: return dns_typetab[58].name;
+ case DNS_T_AXFR: return dns_typetab[59].name;
+ case DNS_T_MAILB: return dns_typetab[60].name;
+ case DNS_T_MAILA: return dns_typetab[61].name;
+ case DNS_T_ANY: return dns_typetab[62].name;
+ case DNS_T_ZXFR: return dns_typetab[63].name;
+ case DNS_T_DLV: return dns_typetab[64].name;
+ case DNS_T_MAX: return dns_typetab[65].name;
+ }
+ return _dns_format_code(nm,"type",code);
+}
+
+const struct dns_nameval dns_classtab[] = {
+ {DNS_C_INVALID,"INVALID"},
+ {DNS_C_IN,"IN"},
+ {DNS_C_CH,"CH"},
+ {DNS_C_HS,"HS"},
+ {DNS_C_ANY,"ANY"},
+ {0,0}};
+const char *dns_classname(enum dns_class code) {
+ static char nm[20];
+ switch(code) {
+ case DNS_C_INVALID: return dns_classtab[0].name;
+ case DNS_C_IN: return dns_classtab[1].name;
+ case DNS_C_CH: return dns_classtab[2].name;
+ case DNS_C_HS: return dns_classtab[3].name;
+ case DNS_C_ANY: return dns_classtab[4].name;
+ }
+ return _dns_format_code(nm,"class",code);
+}
+
+const struct dns_nameval dns_rcodetab[] = {
+ {DNS_R_NOERROR,"NOERROR"},
+ {DNS_R_FORMERR,"FORMERR"},
+ {DNS_R_SERVFAIL,"SERVFAIL"},
+ {DNS_R_NXDOMAIN,"NXDOMAIN"},
+ {DNS_R_NOTIMPL,"NOTIMPL"},
+ {DNS_R_REFUSED,"REFUSED"},
+ {DNS_R_YXDOMAIN,"YXDOMAIN"},
+ {DNS_R_YXRRSET,"YXRRSET"},
+ {DNS_R_NXRRSET,"NXRRSET"},
+ {DNS_R_NOTAUTH,"NOTAUTH"},
+ {DNS_R_NOTZONE,"NOTZONE"},
+ {DNS_R_BADSIG,"BADSIG"},
+ {DNS_R_BADKEY,"BADKEY"},
+ {DNS_R_BADTIME,"BADTIME"},
+ {0,0}};
+const char *dns_rcodename(enum dns_rcode code) {
+ static char nm[20];
+ switch(code) {
+ case DNS_R_NOERROR: return dns_rcodetab[0].name;
+ case DNS_R_FORMERR: return dns_rcodetab[1].name;
+ case DNS_R_SERVFAIL: return dns_rcodetab[2].name;
+ case DNS_R_NXDOMAIN: return dns_rcodetab[3].name;
+ case DNS_R_NOTIMPL: return dns_rcodetab[4].name;
+ case DNS_R_REFUSED: return dns_rcodetab[5].name;
+ case DNS_R_YXDOMAIN: return dns_rcodetab[6].name;
+ case DNS_R_YXRRSET: return dns_rcodetab[7].name;
+ case DNS_R_NXRRSET: return dns_rcodetab[8].name;
+ case DNS_R_NOTAUTH: return dns_rcodetab[9].name;
+ case DNS_R_NOTZONE: return dns_rcodetab[10].name;
+ case DNS_R_BADSIG: return dns_rcodetab[11].name;
+ case DNS_R_BADKEY: return dns_rcodetab[12].name;
+ case DNS_R_BADTIME: return dns_rcodetab[13].name;
+ }
+ return _dns_format_code(nm,"rcode",code);
+}

3rdparty/udns/udns_dn.c

@@ -0,0 +1,379 @@
+/* udns_dn.c
+   domain names manipulation routines
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <string.h>
+#include "udns.h"
+
+unsigned dns_dnlen(dnscc_t *dn) {
+  register dnscc_t *d = dn;
+  while(*d)
+    d += 1 + *d;
+  return (unsigned)(d - dn) + 1;
+}
+
+unsigned dns_dnlabels(register dnscc_t *dn) {
+  register unsigned l = 0;
+  while(*dn)
+    ++l, dn += 1 + *dn;
+  return l;
+}
+
+unsigned dns_dnequal(register dnscc_t *dn1, register dnscc_t *dn2) {
+  register unsigned c;
+  dnscc_t *dn = dn1;
+  for(;;) {
+    if ((c = *dn1++) != *dn2++)
+      return 0;
+    if (!c)
+      return (unsigned)(dn1 - dn);
+    while(c--) {
+      if (DNS_DNLC(*dn1) != DNS_DNLC(*dn2))
+        return 0;
+      ++dn1; ++dn2;
+    }
+  }
+}
+
+unsigned
+dns_dntodn(dnscc_t *sdn, dnsc_t *ddn, unsigned ddnsiz) {
+  unsigned sdnlen = dns_dnlen(sdn);
+  if (ddnsiz < sdnlen)
+    return 0;
+  memcpy(ddn, sdn, sdnlen);
+  return sdnlen;
+}
+
+int
+dns_ptodn(const char *name, unsigned namelen,
+          dnsc_t *dn, unsigned dnsiz, int *isabs)
+{
+  dnsc_t *dp;		/* current position in dn (len byte first) */
+  dnsc_t *const de	/* end of dn: last byte that can be filled up */
+      = dn + (dnsiz >= DNS_MAXDN ? DNS_MAXDN : dnsiz) - 1;
+  dnscc_t *np = (dnscc_t *)name;
+  dnscc_t *ne = np + (namelen ? namelen : strlen((char*)np));
+  dnsc_t *llab;		/* start of last label (llab[-1] will be length) */
+  unsigned c;		/* next input character, or length of last label */
+
+  if (!dnsiz)
+    return 0;
+  dp = llab = dn + 1;
+
+  while(np < ne) {
+
+    if (*np == '.') {	/* label delimiter */
+      c = dp - llab;		/* length of the label */
+      if (!c) {			/* empty label */
+        if (np == (dnscc_t *)name && np + 1 == ne) {
+          /* special case for root dn, aka `.' */
+          ++np;
+          break;
+        }
+        return -1;		/* zero label */
+      }
+      if (c > DNS_MAXLABEL)
+        return -1;		/* label too long */
+      llab[-1] = (dnsc_t)c;	/* update len of last label */
+      llab = ++dp; /* start new label, llab[-1] will be len of it */
+      ++np;
+      continue;
+    }
+
+    /* check whenever we may put out one more byte */
+    if (dp >= de) /* too long? */
+      return dnsiz >= DNS_MAXDN ? -1 : 0;
+    if (*np != '\\') { /* non-escape, simple case */
+      *dp++ = *np++;
+      continue;
+    }
+    /* handle \-style escape */
+    /* note that traditionally, domain names (gethostbyname etc)
+     * used decimal \dd notation, not octal \ooo (RFC1035), so
+     * we're following this tradition here.
+     */
+    if (++np == ne)
+      return -1;			/* bad escape */
+    else if (*np >= '0' && *np <= '9') { /* decimal number */
+      /* we allow not only exactly 3 digits as per RFC1035,
+       * but also 2 or 1, for better usability. */
+      c = *np++ - '0';
+      if (np < ne && *np >= '0' && *np <= '9') { /* 2digits */
+        c = c * 10 + *np++ - '0';
+        if (np < ne && *np >= '0' && *np <= '9') {
+          c = c * 10 + *np++ - '0';
+          if (c > 255)
+            return -1;			/* bad escape */
+        }
+      }
+    }
+    else
+      c = *np++;
+    *dp++ = (dnsc_t)c;	/* place next out byte */
+  }
+
+  if ((c = dp - llab) > DNS_MAXLABEL)
+    return -1;				/* label too long */
+  if ((llab[-1] = (dnsc_t)c) != 0) {
+    *dp++ = 0;
+    if (isabs)
+      *isabs = 0;
+  }
+  else if (isabs)
+    *isabs = 1;
+
+  return dp - dn;
+}
+
+dnscc_t dns_inaddr_arpa_dn[14] = "\07in-addr\04arpa";
+
+dnsc_t *
+dns_a4todn_(const struct in_addr *addr, dnsc_t *dn, dnsc_t *dne) {
+  const unsigned char *s = ((const unsigned char *)addr) + 4;
+  while(s > (const unsigned char *)addr) {
+    unsigned n = *--s;
+    dnsc_t *p = dn + 1;
+    if (n > 99) {
+      if (p + 2 > dne) return 0;
+      *p++ = n / 100 + '0';
+      *p++ = (n % 100 / 10) + '0';
+      *p = n % 10 + '0';
+    }
+    else if (n > 9) {
+      if (p + 1 > dne) return 0;
+      *p++ = n / 10 + '0';
+      *p = n % 10 + '0';
+    }
+    else {
+      if (p > dne) return 0;
+      *p = n + '0';
+    }
+    *dn = p - dn;
+    dn = p + 1;
+  }
+  return dn;
+}
+
+int dns_a4todn(const struct in_addr *addr, dnscc_t *tdn,
+               dnsc_t *dn, unsigned dnsiz) {
+  dnsc_t *dne = dn + (dnsiz > DNS_MAXDN ? DNS_MAXDN : dnsiz);
+  dnsc_t *p;
+  unsigned l;
+  p = dns_a4todn_(addr, dn, dne);
+  if (!p) return 0;
+  if (!tdn)
+    tdn = dns_inaddr_arpa_dn;
+  l = dns_dnlen(tdn);
+  if (p + l > dne) return dnsiz >= DNS_MAXDN ? -1 : 0;
+  memcpy(p, tdn, l);
+  return (p + l) - dn;
+}
+
+int dns_a4ptodn(const struct in_addr *addr, const char *tname,
+                dnsc_t *dn, unsigned dnsiz) {
+  dnsc_t *p;
+  int r;
+  if (!tname)
+    return dns_a4todn(addr, NULL, dn, dnsiz);
+  p = dns_a4todn_(addr, dn, dn + dnsiz);
+  if (!p) return 0;
+  r = dns_sptodn(tname, p, dnsiz - (p - dn));
+  return r != 0 ? r : dnsiz >= DNS_MAXDN ? -1 : 0;
+}
+
+dnscc_t dns_ip6_arpa_dn[10] = "\03ip6\04arpa";
+
+dnsc_t *
+dns_a6todn_(const struct in6_addr *addr, dnsc_t *dn, dnsc_t *dne) {
+  const unsigned char *s = ((const unsigned char *)addr) + 16;
+  if (dn + 64 > dne) return 0;
+  while(s > (const unsigned char *)addr) {
+    unsigned n = *--s & 0x0f;
+    *dn++ = 1;
+    *dn++ = n > 9 ? n + 'a' - 10 : n + '0';
+    *dn++ = 1;
+    n = *s >> 4;
+    *dn++ = n > 9 ? n + 'a' - 10 : n + '0';
+  }
+  return dn;
+}
+
+int dns_a6todn(const struct in6_addr *addr, dnscc_t *tdn,
+               dnsc_t *dn, unsigned dnsiz) {
+  dnsc_t *dne = dn + (dnsiz > DNS_MAXDN ? DNS_MAXDN : dnsiz);
+  dnsc_t *p;
+  unsigned l;
+  p = dns_a6todn_(addr, dn, dne);
+  if (!p) return 0;
+  if (!tdn)
+    tdn = dns_ip6_arpa_dn;
+  l = dns_dnlen(tdn);
+  if (p + l > dne) return dnsiz >= DNS_MAXDN ? -1 : 0;
+  memcpy(p, tdn, l);
+  return (p + l) - dn;
+}
+
+int dns_a6ptodn(const struct in6_addr *addr, const char *tname,
+                dnsc_t *dn, unsigned dnsiz) {
+  dnsc_t *p;
+  int r;
+  if (!tname)
+    return dns_a6todn(addr, NULL, dn, dnsiz);
+  p = dns_a6todn_(addr, dn, dn + dnsiz);
+  if (!p) return 0;
+  r = dns_sptodn(tname, p, dnsiz - (p - dn));
+  return r != 0 ? r : dnsiz >= DNS_MAXDN ? -1 : 0;
+}
+
+/* return size of buffer required to convert the dn into asciiz string.
+ * Keep in sync with dns_dntop() below.
+ */
+unsigned dns_dntop_size(dnscc_t *dn) {
+  unsigned size = 0;		/* the size reqd */
+  dnscc_t *le;			/* label end */
+
+  while(*dn) {
+    /* *dn is the length of the next label, non-zero */
+    if (size)
+      ++size;		/* for the dot */
+    le = dn + *dn + 1;
+    ++dn;
+    do {
+      switch(*dn) {
+      case '.':
+      case '\\':
+      /* Special modifiers in zone files. */
+      case '"':
+      case ';':
+      case '@':
+      case '$':
+        size += 2;
+        break;
+      default:
+        if (*dn <= 0x20 || *dn >= 0x7f)
+          /* \ddd decimal notation */
+          size += 4;
+        else
+          size += 1;
+      }
+    } while(++dn < le);
+  }
+  size += 1;	/* zero byte at the end - string terminator */
+  return size > DNS_MAXNAME ? 0 : size;
+}
+
+/* Convert the dn into asciiz string.
+ * Keep in sync with dns_dntop_size() above.
+ */
+int dns_dntop(dnscc_t *dn, char *name, unsigned namesiz) {
+  char *np = name;			/* current name ptr */
+  char *const ne = name + namesiz;	/* end of name */
+  dnscc_t *le;		/* label end */
+
+  while(*dn) {
+    /* *dn is the length of the next label, non-zero */
+    if (np != name) {
+      if (np >= ne) goto toolong;
+      *np++ = '.';
+    }
+    le = dn + *dn + 1;
+    ++dn;
+    do {
+      switch(*dn) {
+      case '.':
+      case '\\':
+      /* Special modifiers in zone files. */
+      case '"':
+      case ';':
+      case '@':
+      case '$':
+        if (np + 2 > ne) goto toolong;
+        *np++ = '\\';
+        *np++ = *dn;
+        break;
+      default:
+        if (*dn <= 0x20 || *dn >= 0x7f) {
+          /* \ddd decimal notation */
+          if (np + 4 >= ne) goto toolong;
+          *np++ = '\\';
+          *np++ = '0' + (*dn / 100);
+          *np++ = '0' + ((*dn % 100) / 10);
+          *np++ = '0' + (*dn % 10);
+        }
+        else {
+          if (np >= ne) goto toolong;
+          *np++ = *dn;
+        }
+      }
+    } while(++dn < le);
+  }
+  if (np >= ne) goto toolong;
+  *np++ = '\0';
+  return np - name;
+toolong:
+  return namesiz >= DNS_MAXNAME ? -1 : 0;
+}
+
+#ifdef TEST
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv) {
+  int i;
+  int sz;
+  dnsc_t dn[DNS_MAXDN+10];
+  dnsc_t *dl, *dp;
+  int isabs;
+
+  sz = (argc > 1) ? atoi(argv[1]) : 0;
+
+  for(i = 2; i < argc; ++i) {
+    int r = dns_ptodn(argv[i], 0, dn, sz, &isabs);
+    printf("%s: ", argv[i]);
+    if (r < 0) printf("error\n");
+    else if (!r) printf("buffer too small\n");
+    else {
+      printf("len=%d dnlen=%d size=%d name:",
+             r, dns_dnlen(dn), dns_dntop_size(dn));
+      dl = dn;
+      while(*dl) {
+        printf(" %d=", *dl);
+        dp = dl + 1;
+        dl = dp + *dl;
+        while(dp < dl) {
+          if (*dp <= ' ' || *dp >= 0x7f)
+            printf("\\%03d", *dp);
+          else if (*dp == '.' || *dp == '\\')
+            printf("\\%c", *dp);
+          else
+            putchar(*dp);
+          ++dp;
+        }
+      }
+      if (isabs) putchar('.');
+      putchar('\n');
+    }
+  }
+  return 0;
+}
+
+#endif /* TEST */

3rdparty/udns/udns_dntosp.c

@@ -0,0 +1,30 @@
+/* udns_dntosp.c
+   dns_dntosp() = convert DN to asciiz string using static buffer
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include "udns.h"
+
+static char name[DNS_MAXNAME];
+
+const char *dns_dntosp(dnscc_t *dn) {
+  return dns_dntop(dn, name, sizeof(name)) > 0 ? name : 0;
+}

3rdparty/udns/udns_init.c

@@ -0,0 +1,231 @@
+/* udns_init.c
+   resolver initialisation stuff
+
+   Copyright (C) 2006  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#ifdef WINDOWS
+# include <winsock2.h>          /* includes <windows.h> */
+# include <iphlpapi.h>		/* for dns server addresses etc */
+#else
+# include <sys/types.h>
+# include <unistd.h>
+# include <fcntl.h>
+#endif	/* !WINDOWS */
+
+#include <stdlib.h>
+#include <string.h>
+#include "udns.h"
+
+#define ISSPACE(x) (x == ' ' || x == '\t' || x == '\r' || x == '\n')
+
+static const char space[] = " \t\r\n";
+
+static void dns_set_serv_internal(struct dns_ctx *ctx, char *serv) {
+  dns_add_serv(ctx, NULL);
+  for(serv = strtok(serv, space); serv; serv = strtok(NULL, space))
+    dns_add_serv(ctx, serv);
+}
+
+static void dns_set_srch_internal(struct dns_ctx *ctx, char *srch) {
+  dns_add_srch(ctx, NULL);
+  for(srch = strtok(srch, space); srch; srch = strtok(NULL, space))
+    dns_add_srch(ctx, srch);
+}
+
+#ifdef WINDOWS
+
+#ifndef NO_IPHLPAPI
+/* Apparently, some systems does not have proper headers for IPHLPAIP to work.
+ * The best is to upgrade headers, but here's another, ugly workaround for
+ * this: compile with -DNO_IPHLPAPI.
+ */
+
+typedef DWORD (WINAPI *GetAdaptersAddressesFunc)(
+  ULONG Family, DWORD Flags, PVOID Reserved,
+  PIP_ADAPTER_ADDRESSES pAdapterAddresses,
+  PULONG pOutBufLen);
+
+static int dns_initns_iphlpapi(struct dns_ctx *ctx) {
+  HANDLE h_iphlpapi;
+  GetAdaptersAddressesFunc pfnGetAdAddrs;
+  PIP_ADAPTER_ADDRESSES pAddr, pAddrBuf;
+  PIP_ADAPTER_DNS_SERVER_ADDRESS pDnsAddr;
+  ULONG ulOutBufLen;
+  DWORD dwRetVal;
+  int ret = -1;
+
+  h_iphlpapi = LoadLibrary("iphlpapi.dll");
+  if (!h_iphlpapi)
+    return -1;
+  pfnGetAdAddrs = (GetAdaptersAddressesFunc)
+    GetProcAddress(h_iphlpapi, "GetAdaptersAddresses");
+  if (!pfnGetAdAddrs) goto freelib;
+  ulOutBufLen = 0;
+  dwRetVal = pfnGetAdAddrs(AF_UNSPEC, 0, NULL, NULL, &ulOutBufLen);
+  if (dwRetVal != ERROR_BUFFER_OVERFLOW) goto freelib;
+  pAddrBuf = malloc(ulOutBufLen);
+  if (!pAddrBuf) goto freelib;
+  dwRetVal = pfnGetAdAddrs(AF_UNSPEC, 0, NULL, pAddrBuf, &ulOutBufLen);
+  if (dwRetVal != ERROR_SUCCESS) goto freemem;
+  for (pAddr = pAddrBuf; pAddr; pAddr = pAddr->Next)
+    for (pDnsAddr = pAddr->FirstDnsServerAddress;
+	 pDnsAddr;
+	 pDnsAddr = pDnsAddr->Next)
+      dns_add_serv_s(ctx, pDnsAddr->Address.lpSockaddr);
+  ret = 0;
+freemem:
+  free(pAddrBuf);
+freelib:
+  FreeLibrary(h_iphlpapi);
+  return ret;
+}
+
+#else /* NO_IPHLPAPI */
+
+#define dns_initns_iphlpapi(ctx) (-1)
+
+#endif /* NO_IPHLPAPI */
+
+static int dns_initns_registry(struct dns_ctx *ctx) {
+  LONG res;
+  HKEY hk;
+  DWORD type = REG_EXPAND_SZ | REG_SZ;
+  DWORD len;
+  char valBuf[1024];
+
+#define REGKEY_WINNT "SYSTEM\\CurrentControlSet\\Services\\Tcpip\\Parameters"
+#define REGKEY_WIN9x "SYSTEM\\CurrentControlSet\\Services\\VxD\\MSTCP"
+  res = RegOpenKeyEx(HKEY_LOCAL_MACHINE, REGKEY_WINNT, 0, KEY_QUERY_VALUE, &hk);
+  if (res != ERROR_SUCCESS)
+    res = RegOpenKeyEx(HKEY_LOCAL_MACHINE, REGKEY_WIN9x,
+                       0, KEY_QUERY_VALUE, &hk);
+  if (res != ERROR_SUCCESS)
+    return -1;
+  len = sizeof(valBuf) - 1;
+  res = RegQueryValueEx(hk, "NameServer", NULL, &type, (BYTE*)valBuf, &len);
+  if (res != ERROR_SUCCESS || !len || !valBuf[0]) {
+    len = sizeof(valBuf) - 1;
+    res = RegQueryValueEx(hk, "DhcpNameServer", NULL, &type,
+                          (BYTE*)valBuf, &len);
+  }
+  RegCloseKey(hk);
+  if (res != ERROR_SUCCESS || !len || !valBuf[0])
+    return -1;
+  valBuf[len] = '\0';
+  /* nameservers are stored as a whitespace-seperate list:
+   * "192.168.1.1 123.21.32.12" */
+  dns_set_serv_internal(ctx, valBuf);
+  return 0;
+}
+
+#else /* !WINDOWS */
+
+static int dns_init_resolvconf(struct dns_ctx *ctx) {
+  char *v;
+  char buf[2049];	/* this buffer is used to hold /etc/resolv.conf */
+  int has_srch = 0;
+
+  /* read resolv.conf... */
+  { int fd = open("/etc/resolv.conf", O_RDONLY);
+    if (fd >= 0) {
+      int l = read(fd, buf, sizeof(buf) - 1);
+      close(fd);
+      buf[l < 0 ? 0 : l] = '\0';
+    }
+    else
+      buf[0] = '\0';
+  }
+  if (buf[0]) {	/* ...and parse it */
+    char *line, *nextline;
+    line = buf;
+    do {
+      nextline = strchr(line, '\n');
+      if (nextline) *nextline++ = '\0';
+      v = line;
+      while(*v && !ISSPACE(*v)) ++v;
+      if (!*v) continue;
+      *v++ = '\0';
+      while(ISSPACE(*v)) ++v;
+      if (!*v) continue;
+      if (strcmp(line, "domain") == 0) {
+        dns_set_srch_internal(ctx, strtok(v, space));
+	has_srch = 1;
+      }
+      else if (strcmp(line, "search") == 0) {
+        dns_set_srch_internal(ctx, v);
+	has_srch = 1;
+      }
+      else if (strcmp(line, "nameserver") == 0)
+        dns_add_serv(ctx, strtok(v, space));
+      else if (strcmp(line, "options") == 0)
+        dns_set_opts(ctx, v);
+    } while((line = nextline) != NULL);
+  }
+
+  buf[sizeof(buf)-1] = '\0';
+
+  /* get list of nameservers from env. vars. */
+  if ((v = getenv("NSCACHEIP")) != NULL ||
+      (v = getenv("NAMESERVERS")) != NULL) {
+    strncpy(buf, v, sizeof(buf) - 1);
+    dns_set_serv_internal(ctx, buf);
+  }
+  /* if $LOCALDOMAIN is set, use it for search list */
+  if ((v = getenv("LOCALDOMAIN")) != NULL) {
+    strncpy(buf, v, sizeof(buf) - 1);
+    dns_set_srch_internal(ctx, buf);
+    has_srch = 1;
+  }
+  if ((v = getenv("RES_OPTIONS")) != NULL)
+    dns_set_opts(ctx, v);
+
+  /* if still no search list, use local domain name */
+  if (has_srch &&
+      gethostname(buf, sizeof(buf) - 1) == 0 &&
+      (v = strchr(buf, '.')) != NULL &&
+      *++v != '\0')
+    dns_add_srch(ctx, v);
+
+  return 0;
+}
+
+#endif /* !WINDOWS */
+
+int dns_init(struct dns_ctx *ctx, int do_open) {
+  if (!ctx)
+    ctx = &dns_defctx;
+  dns_reset(ctx);
+
+#ifdef WINDOWS
+  if (dns_initns_iphlpapi(ctx) != 0)
+    dns_initns_registry(ctx);
+  /*XXX WINDOWS: probably good to get default domain and search list too...
+   * And options.  Something is in registry. */
+  /*XXX WINDOWS: maybe environment variables are also useful? */
+#else
+  dns_init_resolvconf(ctx);
+#endif
+
+  return do_open ? dns_open(ctx) : 0;
+}

3rdparty/udns/udns_jran.c

@@ -0,0 +1,52 @@
+/* udns_jran.c: small non-cryptographic random number generator
+ * taken from http://burtleburtle.net/bob/rand/smallprng.html
+ * by Bob Jenkins, Public domain.
+ */
+
+#include "udns.h"
+
+#define rot32(x,k) (((x) << (k)) | ((x) >> (32-(k))))
+#define rot64(x,k) (((x) << (k)) | ((x) >> (64-(k))))
+#define tr32(x) ((x)&0xffffffffu)
+
+unsigned udns_jranval(struct udns_jranctx *x) {
+  /* This routine can be made to work with either 32 or 64bit words -
+   * if JRAN_32_64 is defined when compiling the file.
+   * We use if() instead of #if since there's no good
+   * portable way to check sizeof() in preprocessor without
+   * introducing some ugly configure-time checks.
+   * Most compilers will optimize the wrong branches away anyway.
+   * By default it assumes 32bit integers
+   */
+#ifdef JRAN_32_64
+  if (sizeof(unsigned) == 4) {
+#endif
+    unsigned e = tr32(x->a - rot32(x->b, 27));
+    x->a = tr32(x->b ^ rot32(x->c, 17));
+    x->b = tr32(x->c + x->d);
+    x->c = tr32(x->d + e);
+    x->d = tr32(e + x->a);
+#ifdef JRAN_32_64
+  }
+  else if (sizeof(unsigned) == 8) { /* assuming it's 64bits */
+    unsigned e = x->a - rot64(x->b, 7);
+    x->a = x->b ^ rot64(x->c, 13);
+    x->b = x->c + rot64(x->d, 37);
+    x->c = x->d + e;
+    x->d = e + x->a;
+  }
+  else {
+    unsigned e = 0;
+    x->d = 1/e; /* bail */
+  }
+#endif
+  return x->d;
+}
+
+void udns_jraninit(struct udns_jranctx *x, unsigned seed) {
+  unsigned i;
+  x->a = 0xf1ea5eed;
+  x->b = x->c = x->d = seed;
+  for (i = 0; i < 20; ++i)
+     (void)udns_jranval(x);
+}

3rdparty/udns/udns_misc.c

@@ -0,0 +1,67 @@
+/* udns_misc.c
+   miscellaneous routines
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include "udns.h"
+
+int dns_findname(const struct dns_nameval *nv, const char *name) {
+  register const char *a, *b;
+  for(; nv->name; ++nv)
+    for(a = name, b = nv->name; ; ++a, ++b)
+      if (DNS_DNUC(*a) != *b) break;
+      else if (!*a) return nv->val;
+  return -1;
+}
+
+const char *_dns_format_code(char *buf, const char *prefix, int code) {
+  char *bp = buf;
+  unsigned c, n;
+  do *bp++ = DNS_DNUC(*prefix);
+  while(*++prefix);
+  *bp++ = '#';
+  if (code < 0) code = -code, *bp++ = '-';
+  n = 0; c = code;
+  do ++n;
+  while((c /= 10));
+  c = code;
+  bp[n--] = '\0';
+  do bp[n--] = c % 10 + '0';
+  while((c /= 10));
+  return buf;
+}
+
+const char *dns_strerror(int err) {
+  if (err >= 0) return "successeful completion";
+  switch(err) {
+  case DNS_E_TEMPFAIL:	return "temporary failure in name resolution";
+  case DNS_E_PROTOCOL:	return "protocol error";
+  case DNS_E_NXDOMAIN:	return "domain name does not exist";
+  case DNS_E_NODATA:	return "valid domain but no data of requested type";
+  case DNS_E_NOMEM:	return "out of memory";
+  case DNS_E_BADQUERY:	return "malformed query";
+  default:		return "unknown error";
+  }
+}
+
+const char *dns_version(void) {
+  return UDNS_VERSION;
+}

3rdparty/udns/udns_parse.c

@@ -0,0 +1,169 @@
+/* udns_parse.c
+   raw DNS packet parsing routines
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <string.h>
+#include <assert.h>
+#include "udns.h"
+
+dnscc_t *dns_skipdn(dnscc_t *cur, dnscc_t *end) {
+  unsigned c;
+  for(;;) {
+    if (cur >= end)
+      return NULL;
+    c = *cur++;
+    if (!c)
+      return cur;
+    if (c & 192)		/* jump */
+      return cur + 1 >= end ? NULL : cur + 1;
+    cur += c;
+  }
+}
+
+int
+dns_getdn(dnscc_t *pkt, dnscc_t **cur, dnscc_t *end,
+          register dnsc_t *dn, unsigned dnsiz) {
+  unsigned c;
+  dnscc_t *pp = *cur;		/* current packet pointer */
+  dnsc_t *dp = dn;		/* current dn pointer */
+  dnsc_t *const de		/* end of the DN dest */
+       = dn + (dnsiz < DNS_MAXDN ? dnsiz : DNS_MAXDN);
+  dnscc_t *jump = NULL;		/* ptr after first jump if any */
+  unsigned loop = 100;		/* jump loop counter */
+
+  for(;;) {		/* loop by labels */
+    if (pp >= end)		/* reached end of packet? */
+      return -1;
+    c = *pp++;			/* length of the label */
+    if (!c) {			/* empty label: terminate */
+      if (dn >= de)		/* can't fit terminator */
+        goto noroom;
+      *dp++ = 0;
+      /* return next pos: either after the first jump or current */
+      *cur = jump ? jump : pp;
+      return dp - dn;
+    }
+    if (c & 192) {		/* jump */
+      if (pp >= end)		/* eop instead of jump pos */
+        return -1;
+      if (!jump) jump = pp + 1;	/* remember first jump */
+      else if (!--loop) return -1; /* too many jumps */
+      c = ((c & ~192) << 8) | *pp; /* new pos */
+      if (c < DNS_HSIZE)	/* don't allow jump into the header */
+        return -1;
+      pp = pkt + c;
+      continue;
+    }
+    if (c > DNS_MAXLABEL)	/* too long label? */
+      return -1;
+    if (pp + c > end)		/* label does not fit in packet? */
+      return -1;
+    if (dp + c + 1 > de)	/* if enouth room for the label */
+      goto noroom;
+    *dp++ = c;			/* label length */
+    memcpy(dp, pp, c);		/* and the label itself */
+    dp += c;
+    pp += c;			/* advance to the next label */
+  }
+noroom:
+  return dnsiz < DNS_MAXDN ? 0 : -1;
+}
+
+void dns_rewind(struct dns_parse *p, dnscc_t *qdn) {
+  p->dnsp_qdn = qdn;
+  p->dnsp_cur = p->dnsp_ans;
+  p->dnsp_rrl = dns_numan(p->dnsp_pkt);
+  p->dnsp_ttl = 0xffffffffu;
+  p->dnsp_nrr = 0;
+}
+
+void
+dns_initparse(struct dns_parse *p, dnscc_t *qdn,
+              dnscc_t *pkt, dnscc_t *cur, dnscc_t *end) {
+  p->dnsp_pkt = pkt;
+  p->dnsp_end = end;
+  p->dnsp_rrl = dns_numan(pkt);
+  p->dnsp_qdn = qdn;
+  assert(cur + 4 <= end);
+  if ((p->dnsp_qtyp = dns_get16(cur+0)) == DNS_T_ANY) p->dnsp_qtyp = 0;
+  if ((p->dnsp_qcls = dns_get16(cur+2)) == DNS_C_ANY) p->dnsp_qcls = 0;
+  p->dnsp_cur = p->dnsp_ans = cur + 4;
+  p->dnsp_ttl = 0xffffffffu;
+  p->dnsp_nrr = 0;
+}
+
+int dns_nextrr(struct dns_parse *p, struct dns_rr *rr) {
+  dnscc_t *cur = p->dnsp_cur;
+  while(p->dnsp_rrl > 0) {
+    --p->dnsp_rrl;
+    if (dns_getdn(p->dnsp_pkt, &cur, p->dnsp_end,
+                  rr->dnsrr_dn, sizeof(rr->dnsrr_dn)) <= 0)
+      return -1;
+    if (cur + 10 > p->dnsp_end)
+      return -1;
+    rr->dnsrr_typ = dns_get16(cur);
+    rr->dnsrr_cls = dns_get16(cur+2);
+    rr->dnsrr_ttl = dns_get32(cur+4);
+    rr->dnsrr_dsz = dns_get16(cur+8);
+    rr->dnsrr_dptr = cur = cur + 10;
+    rr->dnsrr_dend = cur = cur + rr->dnsrr_dsz;
+    if (cur > p->dnsp_end)
+      return -1;
+    if (p->dnsp_qdn && !dns_dnequal(p->dnsp_qdn, rr->dnsrr_dn))
+      continue;
+    if ((!p->dnsp_qcls || p->dnsp_qcls == rr->dnsrr_cls) &&
+        (!p->dnsp_qtyp || p->dnsp_qtyp == rr->dnsrr_typ)) {
+      p->dnsp_cur = cur;
+      ++p->dnsp_nrr;
+      if (p->dnsp_ttl > rr->dnsrr_ttl) p->dnsp_ttl = rr->dnsrr_ttl;
+      return 1;
+    }
+    if (p->dnsp_qdn && rr->dnsrr_typ == DNS_T_CNAME && !p->dnsp_nrr) {
+      if (dns_getdn(p->dnsp_pkt, &rr->dnsrr_dptr, p->dnsp_end,
+                    p->dnsp_dnbuf, sizeof(p->dnsp_dnbuf)) <= 0 ||
+          rr->dnsrr_dptr != rr->dnsrr_dend)
+        return -1;
+      p->dnsp_qdn = p->dnsp_dnbuf;
+      if (p->dnsp_ttl > rr->dnsrr_ttl) p->dnsp_ttl = rr->dnsrr_ttl;
+    }
+  }
+  p->dnsp_cur = cur;
+  return 0;
+}
+
+int dns_stdrr_size(const struct dns_parse *p) {
+  return
+    dns_dntop_size(p->dnsp_qdn) +
+    (p->dnsp_qdn == dns_payload(p->dnsp_pkt) ? 0 :
+     dns_dntop_size(dns_payload(p->dnsp_pkt)));
+}
+
+void *dns_stdrr_finish(struct dns_rr_null *ret, char *cp,
+                       const struct dns_parse *p) {
+  cp += dns_dntop(p->dnsp_qdn, (ret->dnsn_cname = cp), DNS_MAXNAME);
+  if (p->dnsp_qdn == dns_payload(p->dnsp_pkt))
+    ret->dnsn_qname = ret->dnsn_cname;
+  else
+    dns_dntop(dns_payload(p->dnsp_pkt), (ret->dnsn_qname = cp), DNS_MAXNAME);
+  ret->dnsn_ttl = p->dnsp_ttl;
+  return ret;
+}

3rdparty/udns/udns_rr_a.c

@@ -0,0 +1,126 @@
+/* udns_rr_a.c
+   parse/query A/AAAA IN records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#ifndef WINDOWS
+# include <sys/types.h>
+# include <netinet/in.h>
+#endif
+#include "udns.h"
+
+/* here, we use common routine to parse both IPv4 and IPv6 addresses.
+ */
+
+/* this structure should match dns_rr_a[46] */
+struct dns_rr_a {
+  dns_rr_common(dnsa);
+  unsigned char *dnsa_addr;
+};
+
+static int
+dns_parse_a(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+            void **result, unsigned dsize) {
+  struct dns_rr_a *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r;
+
+  /* first, validate and count number of addresses */
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0)
+    if (rr.dnsrr_dsz != dsize)
+      return DNS_E_PROTOCOL;
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  else if (!p.dnsp_nrr)
+    return DNS_E_NODATA;
+
+  ret = malloc(sizeof(*ret) + dsize * p.dnsp_nrr + dns_stdrr_size(&p));
+  if (!ret)
+    return DNS_E_NOMEM;
+
+  ret->dnsa_nrr = p.dnsp_nrr;
+  ret->dnsa_addr = (unsigned char*)(ret+1);
+
+  /* copy the RRs */
+  for (dns_rewind(&p, qdn), r = 0; dns_nextrr(&p, &rr); ++r)
+    memcpy(ret->dnsa_addr + dsize * r, rr.dnsrr_dptr, dsize);
+
+  dns_stdrr_finish((struct dns_rr_null *)ret,
+                   (char *)(ret->dnsa_addr + dsize * p.dnsp_nrr), &p);
+  *result = ret;
+  return 0;
+}
+
+int
+dns_parse_a4(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+             void **result) {
+#ifdef AF_INET
+  assert(sizeof(struct in_addr) == 4);
+#endif
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_A);
+  return dns_parse_a(qdn, pkt, cur, end, result, 4);
+}
+
+struct dns_query *
+dns_submit_a4(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_a4_fn *cbck, void *data) {
+  return
+    dns_submit_p(ctx, name, DNS_C_IN, DNS_T_A, flags,
+                 dns_parse_a4, (dns_query_fn*)cbck, data);
+}
+
+struct dns_rr_a4 *
+dns_resolve_a4(struct dns_ctx *ctx, const char *name, int flags) {
+  return (struct dns_rr_a4 *)
+    dns_resolve_p(ctx, name, DNS_C_IN, DNS_T_A, flags, dns_parse_a4);
+}
+
+int
+dns_parse_a6(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+             void **result) {
+#ifdef AF_INET6
+  assert(sizeof(struct in6_addr) == 16);
+#endif
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_AAAA);
+  return dns_parse_a(qdn, pkt, cur, end, result, 16);
+}
+
+struct dns_query *
+dns_submit_a6(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_a6_fn *cbck, void *data) {
+  return
+    dns_submit_p(ctx, name, DNS_C_IN, DNS_T_AAAA, flags,
+                 dns_parse_a6, (dns_query_fn*)cbck, data);
+}
+
+struct dns_rr_a6 *
+dns_resolve_a6(struct dns_ctx *ctx, const char *name, int flags) {
+  return (struct dns_rr_a6 *)
+    dns_resolve_p(ctx, name, DNS_C_IN, DNS_T_AAAA, flags, dns_parse_a6);
+}

3rdparty/udns/udns_rr_mx.c

@@ -0,0 +1,91 @@
+/* udns_rr_mx.c
+   parse/query MX IN records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "udns.h"
+
+int
+dns_parse_mx(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+             void **result) {
+  struct dns_rr_mx *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r, l;
+  char *sp;
+  dnsc_t mx[DNS_MAXDN];
+
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_MX);
+
+  /* first, validate the answer and count size of the result */
+  l = 0;
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    cur = rr.dnsrr_dptr + 2;
+    r = dns_getdn(pkt, &cur, end, mx, sizeof(mx));
+    if (r <= 0 || cur != rr.dnsrr_dend)
+      return DNS_E_PROTOCOL;
+    l += dns_dntop_size(mx);
+  }
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  if (!p.dnsp_nrr)
+    return DNS_E_NODATA;
+
+  /* next, allocate and set up result */
+  l += dns_stdrr_size(&p);
+  ret = malloc(sizeof(*ret) + sizeof(struct dns_mx) * p.dnsp_nrr + l);
+  if (!ret)
+    return DNS_E_NOMEM;
+  ret->dnsmx_nrr = p.dnsp_nrr;
+  ret->dnsmx_mx = (struct dns_mx *)(ret+1);
+
+  /* and 3rd, fill in result, finally */
+  sp = (char*)(ret->dnsmx_mx + p.dnsp_nrr);
+  for (dns_rewind(&p, qdn), r = 0; dns_nextrr(&p, &rr); ++r) {
+    ret->dnsmx_mx[r].name = sp;
+    cur = rr.dnsrr_dptr;
+    ret->dnsmx_mx[r].priority = dns_get16(cur);
+    cur += 2;
+    dns_getdn(pkt, &cur, end, mx, sizeof(mx));
+    sp += dns_dntop(mx, sp, DNS_MAXNAME);
+  }
+  dns_stdrr_finish((struct dns_rr_null *)ret, sp, &p);
+  *result = ret;
+  return 0;
+}
+
+struct dns_query *
+dns_submit_mx(struct dns_ctx *ctx, const char *name, int flags,
+              dns_query_mx_fn *cbck, void *data) {
+  return
+    dns_submit_p(ctx, name, DNS_C_IN, DNS_T_MX, flags,
+                 dns_parse_mx, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_mx *
+dns_resolve_mx(struct dns_ctx *ctx, const char *name, int flags) {
+  return (struct dns_rr_mx *)
+    dns_resolve_p(ctx, name, DNS_C_IN, DNS_T_MX, flags, dns_parse_mx);
+}

3rdparty/udns/udns_rr_naptr.c

@@ -0,0 +1,128 @@
+/* udns_rr_naptr.c
+   parse/query NAPTR IN records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   Copyright (C) 2006  Mikael Magnusson <mikma@users.sourceforge.net>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "udns.h"
+
+/* Get a single string for NAPTR record, pretty much like a DN label.
+ * String length is in first byte in *cur, so it can't be >255.
+ */
+static int dns_getstr(dnscc_t **cur, dnscc_t *ep, char *buf)
+{
+  unsigned l;
+  dnscc_t *cp = *cur;
+
+  l = *cp++;
+  if (cp + l > ep)
+    return DNS_E_PROTOCOL;
+  if (buf) {
+    memcpy(buf, cp, l);
+    buf[l] = '\0';
+  }
+  cp += l;
+
+  *cur = cp;
+  return l + 1;
+}
+
+int
+dns_parse_naptr(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+                void **result) {
+  struct dns_rr_naptr *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r, l;
+  char *sp;
+  dnsc_t dn[DNS_MAXDN];
+
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_NAPTR);
+
+  /* first, validate the answer and count size of the result */
+  l = 0;
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    int i;
+    dnscc_t *ep = rr.dnsrr_dend;
+
+    /* first 4 bytes: order & preference */
+    cur = rr.dnsrr_dptr + 4;
+
+    /* flags, services and regexp */
+    for (i = 0; i < 3; i++) {
+      r = dns_getstr(&cur, ep, NULL);
+      if (r < 0)
+        return r;
+      l += r;
+    }
+    /* replacement */
+    r = dns_getdn(pkt, &cur, end, dn, sizeof(dn));
+    if (r <= 0 || cur != rr.dnsrr_dend)
+      return DNS_E_PROTOCOL;
+    l += dns_dntop_size(dn);
+  }
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  if (!p.dnsp_nrr)
+    return DNS_E_NODATA;
+
+  /* next, allocate and set up result */
+  l += dns_stdrr_size(&p);
+  ret = malloc(sizeof(*ret) + sizeof(struct dns_naptr) * p.dnsp_nrr + l);
+  if (!ret)
+    return DNS_E_NOMEM;
+  ret->dnsnaptr_nrr = p.dnsp_nrr;
+  ret->dnsnaptr_naptr = (struct dns_naptr *)(ret+1);
+
+  /* and 3rd, fill in result, finally */
+  sp = (char*)(&ret->dnsnaptr_naptr[p.dnsp_nrr]);
+  for (dns_rewind(&p, qdn), r = 0; dns_nextrr(&p, &rr); ++r) {
+    cur = rr.dnsrr_dptr;
+    ret->dnsnaptr_naptr[r].order = dns_get16(cur); cur += 2;
+    ret->dnsnaptr_naptr[r].preference = dns_get16(cur); cur += 2;
+    sp += dns_getstr(&cur, end, (ret->dnsnaptr_naptr[r].flags = sp));
+    sp += dns_getstr(&cur, end, (ret->dnsnaptr_naptr[r].service = sp));
+    sp += dns_getstr(&cur, end, (ret->dnsnaptr_naptr[r].regexp = sp));
+    dns_getdn(pkt, &cur, end, dn, sizeof(dn));
+    sp += dns_dntop(dn, (ret->dnsnaptr_naptr[r].replacement = sp), DNS_MAXNAME);
+  }
+  dns_stdrr_finish((struct dns_rr_null *)ret, sp, &p);
+  *result = ret;
+  return 0;
+}
+
+struct dns_query *
+dns_submit_naptr(struct dns_ctx *ctx, const char *name, int flags,
+                 dns_query_naptr_fn *cbck, void *data) {
+  return
+    dns_submit_p(ctx, name, DNS_C_IN, DNS_T_NAPTR, flags,
+                 dns_parse_naptr, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_naptr *
+dns_resolve_naptr(struct dns_ctx *ctx, const char *name, int flags) {
+  return (struct dns_rr_naptr *)
+    dns_resolve_p(ctx, name, DNS_C_IN, DNS_T_NAPTR, flags, dns_parse_naptr);
+}

3rdparty/udns/udns_rr_ptr.c

@@ -0,0 +1,109 @@
+/* udns_rr_ptr.c
+   parse/query PTR records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <stdlib.h>
+#include <assert.h>
+#include "udns.h"
+
+int
+dns_parse_ptr(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+              void **result) {
+  struct dns_rr_ptr *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r, l, c;
+  char *sp;
+  dnsc_t ptr[DNS_MAXDN];
+
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_PTR);
+
+  /* first, validate the answer and count size of the result */
+  l = c = 0;
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    cur = rr.dnsrr_dptr;
+    r = dns_getdn(pkt, &cur, end, ptr, sizeof(ptr));
+    if (r <= 0 || cur != rr.dnsrr_dend)
+      return DNS_E_PROTOCOL;
+    l += dns_dntop_size(ptr);
+    ++c;
+  }
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  if (!c)
+    return DNS_E_NODATA;
+
+  /* next, allocate and set up result */
+  ret = malloc(sizeof(*ret) + sizeof(char **) * c + l + dns_stdrr_size(&p));
+  if (!ret)
+    return DNS_E_NOMEM;
+  ret->dnsptr_nrr = c;
+  ret->dnsptr_ptr = (char **)(ret+1);
+
+  /* and 3rd, fill in result, finally */
+  sp = (char*)(ret->dnsptr_ptr + c);
+  c = 0;
+  dns_rewind(&p, qdn);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    ret->dnsptr_ptr[c] = sp;
+    cur = rr.dnsrr_dptr;
+    dns_getdn(pkt, &cur, end, ptr, sizeof(ptr));
+    sp += dns_dntop(ptr, sp, DNS_MAXNAME);
+    ++c;
+  }
+  dns_stdrr_finish((struct dns_rr_null *)ret, sp, &p);
+  *result = ret;
+  return 0;
+}
+
+struct dns_query *
+dns_submit_a4ptr(struct dns_ctx *ctx, const struct in_addr *addr,
+                 dns_query_ptr_fn *cbck, void *data) {
+  dnsc_t dn[DNS_A4RSIZE];
+  dns_a4todn(addr, 0, dn, sizeof(dn));
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_PTR, DNS_NOSRCH,
+                  dns_parse_ptr, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_ptr *
+dns_resolve_a4ptr(struct dns_ctx *ctx, const struct in_addr *addr) {
+  return (struct dns_rr_ptr *)
+    dns_resolve(ctx, dns_submit_a4ptr(ctx, addr, NULL, NULL));
+}
+
+struct dns_query *
+dns_submit_a6ptr(struct dns_ctx *ctx, const struct in6_addr *addr,
+                 dns_query_ptr_fn *cbck, void *data) {
+  dnsc_t dn[DNS_A6RSIZE];
+  dns_a6todn(addr, 0, dn, sizeof(dn));
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_PTR, DNS_NOSRCH,
+                  dns_parse_ptr, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_ptr *
+dns_resolve_a6ptr(struct dns_ctx *ctx, const struct in6_addr *addr) {
+  return (struct dns_rr_ptr *)
+    dns_resolve(ctx, dns_submit_a6ptr(ctx, addr, NULL, NULL));
+}

3rdparty/udns/udns_rr_srv.c

@@ -0,0 +1,155 @@
+/* udns_rr_srv.c
+   parse/query SRV IN (rfc2782) records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+   Copyright 2005 Thadeu Lima de Souza Cascardo <cascardo@minaslivre.org>
+
+   2005-09-11:
+   Changed MX parser file into a SRV parser file
+
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "udns.h"
+
+int
+dns_parse_srv(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+              void **result) {
+  struct dns_rr_srv *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r, l;
+  char *sp;
+  dnsc_t srv[DNS_MAXDN];
+
+  assert(dns_get16(cur+2) == DNS_C_IN && dns_get16(cur+0) == DNS_T_SRV);
+
+  /* first, validate the answer and count size of the result */
+  l = 0;
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    cur = rr.dnsrr_dptr + 6;
+    r = dns_getdn(pkt, &cur, end, srv, sizeof(srv));
+    if (r <= 0 || cur != rr.dnsrr_dend)
+      return DNS_E_PROTOCOL;
+    l += dns_dntop_size(srv);
+  }
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  if (!p.dnsp_nrr)
+    return DNS_E_NODATA;
+
+  /* next, allocate and set up result */
+  l += dns_stdrr_size(&p);
+  ret = malloc(sizeof(*ret) + sizeof(struct dns_srv) * p.dnsp_nrr + l);
+  if (!ret)
+    return DNS_E_NOMEM;
+  ret->dnssrv_nrr = p.dnsp_nrr;
+  ret->dnssrv_srv = (struct dns_srv *)(ret+1);
+
+  /* and 3rd, fill in result, finally */
+  sp = (char*)(ret->dnssrv_srv + p.dnsp_nrr);
+  for (dns_rewind(&p, qdn), r = 0; dns_nextrr(&p, &rr); ++r) {
+    ret->dnssrv_srv[r].name = sp;
+    cur = rr.dnsrr_dptr;
+    ret->dnssrv_srv[r].priority = dns_get16(cur);
+    ret->dnssrv_srv[r].weight = dns_get16(cur+2);
+    ret->dnssrv_srv[r].port = dns_get16(cur+4);
+    cur += 6;
+    dns_getdn(pkt, &cur, end, srv, sizeof(srv));
+    sp += dns_dntop(srv, sp, DNS_MAXNAME);
+  }
+  dns_stdrr_finish((struct dns_rr_null *)ret, sp, &p);
+  *result = ret;
+  return 0;
+}
+
+/* Add a single service or proto name prepending an undescore (_),
+ * according to rfc2782 rules.
+ * Return 0 or the label length.
+ * Routing assumes dn holds enouth space for a single DN label. */
+static int add_sname(dnsc_t *dn, const char *sn) {
+  int l = dns_ptodn(sn, 0, dn + 1, DNS_MAXLABEL-1, NULL);
+  if (l <= 1 || l - 2 != dn[1])
+    /* Should we really check if sn is exactly one label?  Do we care? */
+    return 0;
+  dn[0] = l - 1;
+  dn[1] = '_';
+  return l;
+}
+
+/* Construct a domain name for SRV query from the given name, service and proto.
+ * The code allows any combinations of srv and proto (both are non-NULL,
+ * both NULL, or either one is non-NULL).  Whenever it makes any sense or not
+ * is left as an exercise to programmer.
+ * Return negative value on error (malformed query) or addition query flag(s).
+ */
+static int
+build_srv_dn(dnsc_t *dn, const char *name, const char *srv, const char *proto)
+{
+  int p = 0, l, isabs;
+  if (srv) {
+    l = add_sname(dn + p, srv);
+    if (!l)
+      return -1;
+    p += l;
+  }
+  if (proto) {
+    l = add_sname(dn + p, proto);
+    if (!l)
+      return -1;
+    p += l;
+  }
+  l = dns_ptodn(name, 0, dn + p, DNS_MAXDN - p, &isabs);
+  if (l < 0)
+    return -1;
+  return isabs ? DNS_NOSRCH : 0;
+}
+
+struct dns_query *
+dns_submit_srv(struct dns_ctx *ctx,
+               const char *name, const char *srv, const char *proto,
+               int flags, dns_query_srv_fn *cbck, void *data) {
+  dnsc_t dn[DNS_MAXDN];
+  int r = build_srv_dn(dn, name, srv, proto);
+  if (r < 0) {
+    dns_setstatus (ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return
+    dns_submit_dn(ctx, dn, DNS_C_IN, DNS_T_SRV, flags | r,
+                  dns_parse_srv, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_srv *
+dns_resolve_srv(struct dns_ctx *ctx,
+                const char *name, const char *srv, const char *proto, int flags)
+{
+  dnsc_t dn[DNS_MAXDN];
+  int r = build_srv_dn(dn, name, srv, proto);
+  if (r < 0) {
+    dns_setstatus(ctx, DNS_E_BADQUERY);
+    return NULL;
+  }
+  return (struct dns_rr_srv *)
+    dns_resolve_dn(ctx, dn, DNS_C_IN, DNS_T_SRV, flags | r, dns_parse_srv);
+}

3rdparty/udns/udns_rr_txt.c

@@ -0,0 +1,98 @@
+/* udns_rr_txt.c
+   parse/query TXT records
+
+   Copyright (C) 2005  Michael Tokarev <mjt@corpit.ru>
+   This file is part of UDNS library, an async DNS stub resolver.
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with this library, in file named COPYING.LGPL; if not,
+   write to the Free Software Foundation, Inc., 59 Temple Place,
+   Suite 330, Boston, MA  02111-1307  USA
+
+ */
+
+#include <string.h>
+#include <stdlib.h>
+#include <assert.h>
+#include "udns.h"
+
+int
+dns_parse_txt(dnscc_t *qdn, dnscc_t *pkt, dnscc_t *cur, dnscc_t *end,
+              void **result) {
+  struct dns_rr_txt *ret;
+  struct dns_parse p;
+  struct dns_rr rr;
+  int r, l;
+  dnsc_t *sp;
+  dnscc_t *cp, *ep;
+
+  assert(dns_get16(cur+0) == DNS_T_TXT);
+
+  /* first, validate the answer and count size of the result */
+  l = 0;
+  dns_initparse(&p, qdn, pkt, cur, end);
+  while((r = dns_nextrr(&p, &rr)) > 0) {
+    cp = rr.dnsrr_dptr; ep = rr.dnsrr_dend;
+    while(cp < ep) {
+      r = *cp++;
+      if (cp + r > ep)
+        return DNS_E_PROTOCOL;
+      l += r;
+      cp += r;
+    }
+  }
+  if (r < 0)
+    return DNS_E_PROTOCOL;
+  if (!p.dnsp_nrr)
+    return DNS_E_NODATA;
+
+  /* next, allocate and set up result */
+  l +=  (sizeof(struct dns_txt) + 1) * p.dnsp_nrr + dns_stdrr_size(&p);
+  ret = malloc(sizeof(*ret) + l);
+  if (!ret)
+    return DNS_E_NOMEM;
+  ret->dnstxt_nrr = p.dnsp_nrr;
+  ret->dnstxt_txt = (struct dns_txt *)(ret+1);
+
+  /* and 3rd, fill in result, finally */
+  sp = (dnsc_t*)(ret->dnstxt_txt + p.dnsp_nrr);
+  for(dns_rewind(&p, qdn), r = 0; dns_nextrr(&p, &rr) > 0; ++r) {
+    ret->dnstxt_txt[r].txt = sp;
+    cp = rr.dnsrr_dptr; ep = rr.dnsrr_dend;
+    while(cp < ep) {
+      l = *cp++;
+      memcpy(sp, cp, l);
+      sp += l;
+      cp += l;
+    }
+    ret->dnstxt_txt[r].len = sp - ret->dnstxt_txt[r].txt;
+    *sp++ = '\0';
+  }
+  dns_stdrr_finish((struct dns_rr_null *)ret, (char*)sp, &p);
+  *result = ret;
+  return 0;
+}
+
+struct dns_query *
+dns_submit_txt(struct dns_ctx *ctx, const char *name, int qcls, int flags,
+               dns_query_txt_fn *cbck, void *data) {
+  return
+    dns_submit_p(ctx, name, qcls, DNS_T_TXT, flags,
+                 dns_parse_txt, (dns_query_fn *)cbck, data);
+}
+
+struct dns_rr_txt *
+dns_resolve_txt(struct dns_ctx *ctx, const char *name, int qcls, int flags) {
+  return (struct dns_rr_txt *)
+    dns_resolve_p(ctx, name, qcls, DNS_T_TXT, flags, dns_parse_txt);
+}

CMakeLists.txt

@@ -1,18 +1,66 @@
-cmake_minimum_required (VERSION 2.6.4)
+cmake_minimum_required (VERSION 3.0)
+
+if(COMMAND cmake_policy)
+   if(POLICY CMP0054)
+       cmake_policy(SET CMP0054 NEW)
+   endif()
+   if(POLICY CMP0042)
+       cmake_policy(SET CMP0042 NEW)
+   endif()
+   if(POLICY CMP0067)
+       cmake_policy(SET CMP0067 NEW)
+   endif()
+endif()
+
+
+message(STATUS "CMAKE Build type: ${CMAKE_BUILD_TYPE}")
+# Set a default build type if none was specified
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  message(STATUS "Setting build type to 'Debug' as none was specified.")
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
+  # Set the possible values of build type for cmake-gui
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
+    "MinSizeRel" "RelWithDebInfo")
+endif()
+
 include (CheckFunctionExists)
 include (CheckIncludeFile)
+include (CheckLibraryExists)
 include (CheckCXXSourceCompiles)
+include (CheckCXXCompilerFlag)
+include (GenerateExportHeader)
 
+# only relevant for building shared libs but let's set it regardless
+set(CMAKE_OSX_RPATH 1)
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.9" CACHE STRING "Minimum OS X deployment version")
 
-project(SimGear)
+# let's use & require C++11 - note these are only functional with CMake 3.1
+# we do manual fallbacks for CMake 3.0 in the compilers section
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED YES)
 
 # read 'version' file into a variable (stripping any newlines or spaces)
 file(READ version versionFile)
 string(STRIP ${versionFile} SIMGEAR_VERSION)
 
+project(SimGear VERSION ${SIMGEAR_VERSION} LANGUAGES C CXX)
+
+# add a dependency on the version file
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS version)
+
+set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS TRUE)
+
 # use simgear version also as the SO version (if building SOs)
 SET(SIMGEAR_SOVERSION ${SIMGEAR_VERSION})
 
+# Warning when build is not an out-of-source build.
+string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BINARY_DIR}" InSourceBuild)
+if(InSourceBuild)
+    message(WARNING  "Avoid building inside the source tree!")
+    message(WARNING  "Create a separate build directory instead (i.e. 'sgbuild') and call CMake from there: ")
+    message(WARNING  "  mkdir ../sgbuild && cd ../sgbuild && cmake ${CMAKE_SOURCE_DIR}")
+endif(InSourceBuild)
+
 #packaging
 SET(CPACK_RESOURCE_FILE_LICENSE "${PROJECT_SOURCE_DIR}/COPYING")
 SET(CPACK_RESOURCE_FILE_README "${PROJECT_SOURCE_DIR}/README")
@@ -24,7 +72,7 @@ SET(CPACK_INSTALL_CMAKE_PROJECTS  ${CMAKE_CURRENT_BINARY_DIR};SimGear;ALL;/)
 
 # split version string into components, note CMAKE_MATCH_0 is the entire regexp match
 string(REGEX MATCH "([0-9]+)\\.([0-9]+)\\.([0-9]+)" CPACK_PACKAGE_VERSION ${SIMGEAR_VERSION} )
-set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1}) 
+set(CPACK_PACKAGE_VERSION_MAJOR ${CMAKE_MATCH_1})
 set(CPACK_PACKAGE_VERSION_MINOR ${CMAKE_MATCH_2})
 set(CPACK_PACKAGE_VERSION_PATCH ${CMAKE_MATCH_3})
 
@@ -35,8 +83,6 @@ set(CPACK_SOURCE_PACKAGE_FILE_NAME "simgear-${SIMGEAR_VERSION}" CACHE INTERNAL "
 set(CPACK_SOURCE_IGNORE_FILES
   "^${PROJECT_SOURCE_DIR}/.git;\\\\.gitignore;Makefile.am;~$;${CPACK_SOURCE_IGNORE_FILES}")
 
-message(STATUS "ignoring: ${CPACK_SOURCE_IGNORE_FILES}")
-
 include (CPack)
 
 # We have some custom .cmake scripts not in the official distribution.
@@ -52,23 +98,59 @@ endif(NOT CMAKE_BUILD_TYPE)
 # Determine name of library installation directory, i.e. "lib" vs "lib64", which
 # differs between all Debian-based vs all other Linux distros.
 # See cmake bug #11964, http://cmake.org/gitweb?p=cmake.git;a=commit;h=126c993d
-# GNUInstallDirs requires CMake >= 2.8.5, use own file for older cmake
-if(${CMAKE_VERSION} VERSION_GREATER 2.8.4)
-  include(GNUInstallDirs)
-else(${CMAKE_VERSION} VERSION_GREATER 2.8.4)
-  include(OldGNUInstallDirs)
-endif(${CMAKE_VERSION} VERSION_GREATER 2.8.4)
+include(GNUInstallDirs)
 message(STATUS "Library installation directory: ${CMAKE_INSTALL_LIBDIR}")
 
-option(SIMGEAR_SHARED "Set to ON to build SimGear as a shared library/framework" OFF)
+#####################################################################################
+# Configure library search paths
+#####################################################################################
+
+if (NOT MSVC)
+option(SIMGEAR_SHARED   "Set to ON to build SimGear as a shared library/framework" OFF)
+option(SYSTEM_EXPAT     "Set to ON to build SimGear using the system expat library" OFF)
+option(SYSTEM_UDNS      "Set to ON to build SimGear using the system udns library" OFF)
+else()
+# Building SimGear DLLs is currently not supported for MSVC.
+set(SIMGEAR_SHARED OFF)
+# Using external 3rd party libraries is currently not supported for MSVC - it would require shared simgear (DLL).
+set(SYSTEM_EXPAT OFF)
+set(SYSTEM_UDNS OFF)
+endif()
+
 option(SIMGEAR_HEADLESS "Set to ON to build SimGear without GUI/graphics support" OFF)
-option(JPEG_FACTORY "Enable JPEG-factory support" OFF)
-option(ENABLE_LIBSVN "Set to ON to build SimGear with libsvnclient support" ON)
-option(ENABLE_RTI "Set to ON to build SimGear with RTI support" OFF)
-option(ENABLE_TESTS "Set to OFF to disable building SimGear's test applications" ON)
+option(ENABLE_RTI       "Set to ON to build SimGear with RTI support" OFF)
+option(ENABLE_GDAL      "Set to ON to build SimGear with GDAL support" OFF)
+option(ENABLE_TESTS     "Set to OFF to disable building SimGear's test applications" ON)
+option(ENABLE_SOUND     "Set to OFF to disable building SimGear's sound support" ON)
+option(USE_AEONWAVE     "Set to ON to use AeonWave instead of OpenAL" ON)
+option(ENABLE_PKGUTIL   "Set to ON to build the sg_pkgutil application (default)" ON)
+option(ENABLE_DNS       "Set to ON to use udns library and DNS service resolver" ON)
+option(ENABLE_SIMD      "Enable SSE/SSE2 support for compilers" ON)
+option(ENABLE_SIMD_CODE	"Enable SSE/SSE2 support code for compilers" OFF)
+option(ENABLE_OPENMP    "Enable OpenMP compiler support" OFF)
+
+if (NOT ENABLE_SIMD AND ENABLE_SIMD_CODE)
+  set(ENABLE_SIMD_CODE OFF)
+endif()
+
+include (DetectArch)
+
+# until the fstream fix is applied and generally available in OSG,
+# keep the compatability link option as the default
+option(OSG_FSTREAM_EXPORT_FIXED "Set to ON if the osgDB fstream export patch is applied" OFF)
+
+if (CMAKE_COMPILER_IS_GNUCXX OR CLANG)
+  if (CMAKE_VERSION VERSION_LESS 3.1)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++${CMAKE_CXX_STANDARD}")
+  elseif (CMAKE_VERSION VERSION_LESS 3.8)
+    # policy CMP0067 (try_compile does not honor CMAKE_CXX_STANDARD)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -std=c++${CMAKE_CXX_STANDARD}")
+  endif()
+endif()
+
 
 if (MSVC)
-  GET_FILENAME_COMPONENT(PARENT_DIR ${PROJECT_SOURCE_DIR} PATH)
+  GET_FILENAME_COMPONENT(PARENT_DIR ${PROJECT_BINARY_DIR} PATH)
   if (CMAKE_CL_64)
     SET(TEST_3RDPARTY_DIR "${PARENT_DIR}/3rdparty.x64")
   else (CMAKE_CL_64)
@@ -85,12 +167,23 @@ endif (MSVC)
 
 if (MSVC AND MSVC_3RDPARTY_ROOT)
   message(STATUS "3rdparty files located in ${MSVC_3RDPARTY_ROOT}")
+
+  string(SUBSTRING ${MSVC_VERSION} 0 2 MSVC_VERSION_MAJOR)
+  string(SUBSTRING ${MSVC_VERSION} 2 2 MSVC_VERSION_MINOR)
+
   set( OSG_MSVC "msvc" )
-  if (${MSVC_VERSION} EQUAL 1600)
-      set( OSG_MSVC ${OSG_MSVC}100 )
-  else (${MSVC_VERSION} EQUAL 1600)
-      set( OSG_MSVC ${OSG_MSVC}90 )
-  endif (${MSVC_VERSION} EQUAL 1600)
+  if (${MSVC_VERSION_MAJOR} EQUAL "19")
+    if (${MSVC_VERSION_MINOR} EQUAL "00")
+      set( OSG_MSVC ${OSG_MSVC}140 )
+    else ()
+      set( OSG_MSVC ${OSG_MSVC}141 )
+    endif ()
+  elseif (${MSVC_VERSION_MAJOR} EQUAL "18")
+    set( OSG_MSVC ${OSG_MSVC}120 )
+  else ()
+    message(FATAL_ERROR "Visual Studio 2013/15/17 is required")
+  endif ()
+
   if (CMAKE_CL_64)
       set( OSG_MSVC ${OSG_MSVC}-64 )
       set( MSVC_3RDPARTY_DIR 3rdParty.x64 )
@@ -98,64 +191,139 @@ if (MSVC AND MSVC_3RDPARTY_ROOT)
       set( MSVC_3RDPARTY_DIR 3rdParty )
   endif (CMAKE_CL_64)
 
-  set (CMAKE_LIBRARY_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/lib )
-  set (CMAKE_INCLUDE_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/include)
-  set (BOOST_ROOT ${MSVC_3RDPARTY_ROOT}/boost_1_44_0)
-  message(STATUS "BOOST_ROOT is ${BOOST_ROOT}")
+  set (CMAKE_LIBRARY_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenRTI/lib )
+  set (CMAKE_INCLUDE_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenRTI/include)
+
+  if(NOT BOOST_INCLUDEDIR)
+    # if this variable was not set by the user, set it to 3rdparty root's
+    # parent dir, which is the normal location for people using our
+    # windows-3rd-party repo
+    GET_FILENAME_COMPONENT(MSVC_ROOT_PARENT_DIR ${MSVC_3RDPARTY_ROOT} PATH)
+    set(BOOST_INCLUDEDIR ${MSVC_ROOT_PARENT_DIR})
+    message(STATUS "BOOST_INCLUDEDIR is ${BOOST_INCLUDEDIR}")
+  endif()
+
   set (OPENAL_INCLUDE_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)
-  set (ALUT_INCLUDE_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)
-  set (OPENAL_LIBRARY_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib) 
+  set (OPENAL_LIBRARY_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib)
 endif (MSVC AND MSVC_3RDPARTY_ROOT)
 
-find_package(Boost REQUIRED)
-set (BOOST_CXX_FLAGS "-DBOOST_MULTI_INDEX_DISABLE_SERIALIZATION -DBOOST_BIMAP_DISABLE_SERIALIZATION")
+if(APPLE)
+  find_library(COCOA_LIBRARY Cocoa)
+endif()
 
-find_package(ZLIB REQUIRED)
-find_package(Threads REQUIRED)
+if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+    find_package(Threads REQUIRED)
+endif()
+
+find_package(Boost REQUIRED)
+set (BOOST_CXX_FLAGS "-DBOOST_BIMAP_DISABLE_SERIALIZATION")
+include(BoostTestTargets)
 
 if(SIMGEAR_HEADLESS)
-    message(STATUS "headless mode")
-    set(NO_OPENSCENEGRAPH_INTERFACE 1)
+    message(STATUS "SimGear mode: HEADLESS")
+    set(ENABLE_SOUND 0)
 else()
+    message(STATUS "SimGear mode: NORMAL")
     find_package(OpenGL REQUIRED)
-    find_package(OpenAL REQUIRED)
-    find_package(ALUT REQUIRED)
-    find_package(OpenSceneGraph 3.0.0 REQUIRED osgText osgSim osgDB osgParticle osgUtil)
+
+    if (ENABLE_SOUND)
+        if (USE_AEONWAVE)
+            find_package(AAX)
+        endif()
+
+        if(NOT AAX_FOUND)
+            set(USE_AEONWAVE FALSE)
+            find_package(OpenAL REQUIRED)
+        endif()
+
+        if(AAX_FOUND)
+            message(STATUS "Sound support: AeonWave")
+        else()
+            message(STATUS "Sound support: OpenAL")
+        endif()
+    endif(ENABLE_SOUND)
+
+    find_package(OpenSceneGraph 3.2.0 REQUIRED osgText osgSim osgDB osgParticle osgGA osgViewer osgUtil)
+
+    if (MSVC)
+      set(CMAKE_REQUIRED_INCLUDES ${OPENSCENEGRAPH_INCLUDE_DIRS})
+      # ensure OSG was compiled with OSG_USE_UTF8_FILENAME set
+      check_cxx_source_compiles(
+         "#include <osg/Config>
+         #if !defined(OSG_USE_UTF8_FILENAME)
+          #error OSG UTF8 support not enabled
+         #endif
+         int main() { return 0; }"
+         SIMGEAR_OSG_USE_UTF8_FILENAME)
+      if (NOT SIMGEAR_OSG_USE_UTF8_FILENAME)
+        message(FATAL_ERROR "Please rebuild OSG with OSG_USE_UTF8_FILENAME set to ON")
+      endif()
+    endif()
 endif(SIMGEAR_HEADLESS)
 
-if(JPEG_FACTORY)
-    message(STATUS "JPEG-factory enabled")
-    find_package(JPEG REQUIRED)
-    include_directories(${JPEG_INCLUDE_DIR})
-endif(JPEG_FACTORY)
+find_package(ZLIB 1.2.4 REQUIRED)
+find_package(CURL REQUIRED)
 
-if(ENABLE_LIBSVN)
-	find_package(SvnClient)
+if (SYSTEM_EXPAT)
+    message(STATUS "Requested to use system Expat library, forcing SIMGEAR_SHARED to true")
+    set(SIMGEAR_SHARED ON)
+    find_package(EXPAT REQUIRED)
 
-	if(LIBSVN_FOUND)
-		message(STATUS "libsvn found, enabling in SimGear")
-		set(HAVE_SVN_CLIENT_H 1)
-		set(HAVE_LIBSVN_CLIENT_1 1)
-	else()
-		message(STATUS "Missing libsvn, unable to enable SVN in SimGear")
-	endif(LIBSVN_FOUND)
-endif(ENABLE_LIBSVN)
+else()
+    message(STATUS "Using built-in expat code")
+    # XML_STATIC is important to avoid sg_expat_external.h
+    # declaring symbols as declspec(import)
+    add_definitions(-DHAVE_EXPAT_CONFIG_H -DXML_STATIC)
+    set(EXPAT_INCLUDE_DIRS
+            ${PROJECT_SOURCE_DIR}/3rdparty/expat
+            ${PROJECT_BINARY_DIR}/3rdparty/expat)
+endif(SYSTEM_EXPAT)
 
+check_include_file(inttypes.h HAVE_INTTYPES_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
-check_include_file(sys/timeb.h HAVE_SYS_TIMEB_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(windows.h HAVE_WINDOWS_H)
 
+if(HAVE_INTTYPES_H)
+  # ShivaVG needs inttypes.h
+  add_definitions(-DHAVE_INTTYPES_H)
+endif()
+
 if(ENABLE_RTI)
-# See if we have any rti library variant installed
-    find_package(RTI)
+    find_package(PkgConfig)
+    if(PKG_CONFIG_FOUND)
+      SET(ENV{PKG_CONFIG_PATH} "${CMAKE_INSTALL_PREFIX}/lib/pkgconfig:$ENV{PKG_CONFIG_PATH}")
+      pkg_check_modules(RTI hla-rti13)
+    endif(PKG_CONFIG_FOUND)
+    if(RTI_FOUND)
+      SET(RTI_INCLUDE_DIR "${RTI_INCLUDE_DIRS}")
+      message(STATUS "RTI: ENABLED")
+    else()
+      message(STATUS "RTI: DISABLED")
+    endif(RTI_FOUND)
+else()
+    message(STATUS "RTI: DISABLED")
 endif(ENABLE_RTI)
 
+if(ENABLE_GDAL)
+    find_package(GDAL 2.0.0 REQUIRED)
+    if (GDAL_FOUND)
+        include_directories(${GDAL_INCLUDE_DIR})
+    endif(GDAL_FOUND)
+endif(ENABLE_GDAL)
+
 check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)
-check_function_exists(ftime HAVE_FTIME)
-check_function_exists(timegm HAVE_TIMEGM)
 check_function_exists(rint HAVE_RINT)
 check_function_exists(mkdtemp HAVE_MKDTEMP)
+check_function_exists(bcopy HAVE_BCOPY)
+check_function_exists(mmap HAVE_MMAP)
+
+if (NOT MSVC)
+  check_function_exists(timegm HAVE_TIMEGM)
+  if (NOT HAVE_TIMEGM)
+    message(FATAL_ERROR "Non-Windows platforms must support timegm()")
+  endif()
+endif()
 
 if(HAVE_UNISTD_H)
     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
@@ -167,20 +335,33 @@ if(HAVE_UNISTD_H)
 
         int main() { return 0; }
         "
-        HAVE_CLOCK_GETTIME)    
+        HAVE_CLOCK_GETTIME)
 endif(HAVE_UNISTD_H)
 
 set(RT_LIBRARY "")
 if(HAVE_CLOCK_GETTIME)
-    check_function_exists(clock_gettime CLOCK_GETTIME_IN_LIBC)
-    if(NOT CLOCK_GETTIME_IN_LIBC)
-        check_library_exists(rt clock_gettime "" HAVE_RT)
-        if(HAVE_RT)
-            set(RT_LIBRARY rt)
-        endif(HAVE_RT)
-        endif(NOT CLOCK_GETTIME_IN_LIBC)
+    check_library_exists(rt clock_gettime "" HAVE_RT)
+    if(HAVE_RT)
+        set(RT_LIBRARY rt)
+    endif(HAVE_RT)
 endif(HAVE_CLOCK_GETTIME)
 
+set(DL_LIBRARY "")
+check_cxx_source_compiles(
+    "#include <dlfcn.h>
+    int main(void) {
+        return 0;
+    }
+    "
+    HAVE_DLFCN_H)
+
+if(HAVE_DLFCN_H)
+    check_library_exists(dl dlerror "" HAVE_DL)
+    if(HAVE_DL)
+        set(DL_LIBRARY "dl")
+    endif()
+endif()
+
 SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually 'd' on windows")
 SET(CMAKE_RELEASE_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
 SET(CMAKE_RELWITHDEBINFO_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
@@ -188,13 +369,59 @@ SET(CMAKE_MINSIZEREL_POSTFIX "" CACHE STRING "add a postfix, usually empty on wi
 
 # isnan might not be real symbol, so can't check using function_exists
 check_cxx_source_compiles(
-    "#include <cmath> 
-    void f() { isnan(0.0);} "
-    HAVE_ISNAN)
+    "#include <cmath>
+    int main() { return std::isnan(0.0);} "
+    HAVE_STD_ISNAN)
+
+if (NOT ${HAVE_STD_ISNAN})
+  message(FATAL_ERROR "Your compiler lacks C++11 std::isnan, please update it")
+endif()
+
+# Check if the <regex> implementation in the C++ standard library is usable.
+# This is necessary because g++ 4.8 lies about its C++11 compliance: its
+# <regex> is utterly unusable, cf. [1].
+# The big preprocessor test essentially comes from [2], and gcc upstream devs
+# appear to back it (see comments following [2], as well as [3]).
+#
+#   [1] https://stackoverflow.com/a/12665408/4756009
+#   [2] https://stackoverflow.com/a/41186162/4756009
+#   [3] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
+check_cxx_source_compiles(
+    "#include <regex>
+
+     int main() {
+       #if __cplusplus >= 201103L &&                             \
+           (!defined(__GLIBCXX__)                         ||     \
+            (__cplusplus >= 201402L)                      ||     \
+            defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) ||     \
+            defined(_GLIBCXX_REGEX_STATE_LIMIT)           ||     \
+            (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))
+       #else
+         nullptr = void; // intentionally trigger a compilation error
+       #endif
+     }"
+    HAVE_WORKING_STD_REGEX)
 
 if(CMAKE_COMPILER_IS_GNUCXX)
-    set(WARNING_FLAGS -Wall)
-    
+    set(WARNING_FLAGS_CXX "-Wall -fPIC")
+    set(WARNING_FLAGS_C   "-Wall -fPIC")
+
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.4)
+      message(WARNING "GCC 4.4 will be required soon, please upgrade")
+    endif()
+
+    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+      set(CMAKE_C_FLAGS
+        "${CMAKE_C_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline")
+      set(CMAKE_CXX_FLAGS
+        "${CMAKE_CXX_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline")
+    elseif (ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
+      endif()
+    endif()
+
     # certain GCC versions don't provide the atomic builds, and hence
     # require is to provide them in SGAtomic.cxx
     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
@@ -203,34 +430,96 @@ if(CMAKE_COMPILER_IS_GNUCXX)
         GCC_ATOMIC_BUILTINS_FOUND)
 endif(CMAKE_COMPILER_IS_GNUCXX)
 
+if (CLANG)
+    # Boost redeclares class members
+    set(WARNING_FLAGS_CXX "-Wall -fPIC -Wno-overloaded-virtual -Wno-redeclared-class-member")
+    set(WARNING_FLAGS_C   "-Wall -fPIC")
+    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
+    # fix Boost compilation :(
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+
+    if (CMAKE_BUILD_TYPE STREQUAL "Debug")
+      set(CMAKE_C_FLAGS
+        "${CMAKE_C_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline-functions")
+      set(CMAKE_CXX_FLAGS
+        "${CMAKE_CXX_FLAGS} -O0 -fno-omit-frame-pointer -fno-inline-functions")
+    elseif (ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse -ftree-vectorize -ftree-slp-vectorize")
+      endif()
+    endif()
+endif()
+
+if (ENABLE_OPENMP)
+    find_package(OpenMP)
+    if(OPENMP_FOUND)
+        message(STATUS "OpenMP: ENABLED")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+    else()
+        message(STATUS "OpenMP: NOT FOUND")
+    endif()
+else()
+    message(STATUS "OpenMP: DISABLED")
+endif()
+
+if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+# boost goes haywire wrt static asserts
+    check_cxx_compiler_flag(-Wno-unused-local-typedefs HAS_NOWARN_UNUSED_TYPEDEFS)
+    if(HAS_NOWARN_UNUSED_TYPEDEFS)
+        set(WARNING_FLAGS_CXX " ${WARNING_FLAGS_CXX} -Wno-unused-local-typedefs")
+    endif()
+endif()
+
 if(WIN32)
 
+    if(MINGW)
+        add_definitions(-D_WIN32_WINNT=0x501)
+    endif()
+
     if(MSVC)
-        # turn off various warnings
-        # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)
-        #     SET(WARNING_FLAGS "${WARNING_FLAGS} /wd${warning}")
-        # endforeach(warning)
-        
-        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /wd4996")
+        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /MP")
+        if(ENABLE_SIMD)
+          if (X86)
+            SET(CMAKE_C_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+          else()
+            SET(CMAKE_C_FLAGS_RELEASE "/O2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2")
+          endif()
+        endif()
+
+        if (NOT OSG_FSTREAM_EXPORT_FIXED)
+          message(STATUS "For better linking performance, use OSG with patched fstream header")
+          # needed to avoid link errors on multiply-defined standard C++
+          # symbols. Suspect this may be an OSG-DB export bug
+            set( MSVC_LD_FLAGS "/FORCE:MULTIPLE" )
+        endif ()
+
+        if (${MSVC_VERSION} GREATER 1899)
+            # needed for debug builds with VS2015
+            set( MSVC_FLAGS "${MSVC_FLAGS} /bigobj" )
+        endif()
     endif(MSVC)
-    
+
     # assumed on Windows
     set(HAVE_GETLOCALTIME 1)
-    
+
     set( WINSOCK_LIBRARY "ws2_32.lib" )
+    set( SHLWAPI_LIBRARY "Shlwapi.lib" )
     set( RT_LIBRARY "winmm" )
-endif(WIN32)    
+endif(WIN32)
 
-set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS} ${MSVC_FLAGS}")
-set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS} ${MSVC_FLAGS} ${BOOST_CXX_FLAGS}")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS_C} ${MSVC_FLAGS}")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS_CXX} ${MSVC_FLAGS} ${BOOST_CXX_FLAGS}")
+set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LD_FLAGS}")
 
-include_directories(${PROJECT_SOURCE_DIR})
-include_directories(${PROJECT_BINARY_DIR}/simgear)
-
-include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS} 
-    ${Boost_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIR} 
-    ${ALUT_INCLUDE_DIR} ${OPENAL_INCLUDE_DIR} )
+include(CheckCXXFeatures)
 
+# use BEFORE to ensure local directories are used first,
+# ahead of system-installed libs
+include_directories(BEFORE ${PROJECT_BINARY_DIR}/simgear)
 
 add_definitions(-DHAVE_CONFIG_H)
 
@@ -242,15 +531,85 @@ configure_file (
   )
 
 if(ENABLE_TESTS)
-# enable CTest / make test target
+    # enable CTest / make test target
+    message(STATUS "Tests: ENABLED")
 
-include (Dart)
-enable_testing()
+    include (Dart)
+    enable_testing()
+else()
+    message(STATUS "Tests: DISABLED")
 endif(ENABLE_TESTS)
 
+# always set TEST_LIBS as it is also used by other tools/applications
+set(TEST_LIBS_INTERNAL_CORE
+    ${CMAKE_THREAD_LIBS_INIT}
+    ${ZLIB_LIBRARY}
+    ${WINSOCK_LIBRARY}
+    ${SHLWAPI_LIBRARY}
+    ${RT_LIBRARY}
+    ${DL_LIBRARY}
+    ${COCOA_LIBRARY}
+    ${CURL_LIBRARIES}
+    ${GDAL_LIBRARY})
+set(TEST_LIBS SimGearCore ${TEST_LIBS_INTERNAL_CORE})
+
+if(NOT SIMGEAR_HEADLESS)
+    set(TEST_LIBS SimGearScene ${OPENGL_LIBRARIES} ${TEST_LIBS})
+endif()
+
 install (FILES ${PROJECT_BINARY_DIR}/simgear/simgear_config.h  DESTINATION include/simgear/)
+
+if(ENABLE_DNS)
+    if(SYSTEM_UDNS)
+        message(STATUS "Requested to use system udns library, forcing SIMGEAR_SHARED to true")
+        set(SIMGEAR_SHARED ON)
+        find_package(Udns REQUIRED)
+    else()
+        message(STATUS "DNS resolver: ENABLED")
+        include_directories(3rdparty/udns)
+    endif()
+else()
+    message(STATUS "DNS resolver: DISABLED")
+endif()
+
+
+add_subdirectory(3rdparty)
 add_subdirectory(simgear)
 
+#-----------------------------------------------------------------------------
+### Export stuff, see https://cmake.org/cmake/help/v3.2/manual/cmake-packages.7.html#creating-packages
+#-----------------------------------------------------------------------------
+
+generate_export_header(SimGearCore)
+if(NOT SIMGEAR_HEADLESS)
+  generate_export_header(SimGearScene)
+endif()
+
+include(CMakePackageConfigHelpers)
+
+write_basic_package_version_file(
+  "${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfigVersion.cmake"
+  VERSION ${SIMGEAR_VERSION}
+  COMPATIBILITY AnyNewerVersion
+)
+
+configure_file(SimGearConfig.cmake.in
+  "${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfig.cmake"
+  @ONLY
+)
+
+set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/SimGear)
+install(EXPORT SimGearTargets
+  DESTINATION ${ConfigPackageLocation}
+)
+install(
+  FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfig.cmake"
+    "${CMAKE_CURRENT_BINARY_DIR}/SimGear/SimGearConfigVersion.cmake"
+  DESTINATION ${ConfigPackageLocation}
+  COMPONENT Devel
+)
+
 #-----------------------------------------------------------------------------
 ### uninstall target
 #-----------------------------------------------------------------------------
@@ -260,4 +619,3 @@ CONFIGURE_FILE(
   IMMEDIATE @ONLY)
 ADD_CUSTOM_TARGET(uninstall
   "${CMAKE_COMMAND}" -P "${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake")
-

CMakeModules/BoostTestTargets.cmake

@@ -0,0 +1,256 @@
+# - Add tests using boost::test
+#
+# Add this line to your test files in place of including a basic boost test header:
+#  #include <BoostTestTargetConfig.h>
+#
+# If you cannot do that and must use the included form for a given test,
+# include the line
+#  // OVERRIDE_BOOST_TEST_INCLUDED_WARNING
+# in the same file with the boost test include.
+#
+#  include(BoostTestTargets)
+#  add_boost_test(<testdriver_name> SOURCES <source1> [<more sources...>]
+#   [FAIL_REGULAR_EXPRESSION <additional fail regex>]
+#   [LAUNCHER <generic launcher script>]
+#   [LIBRARIES <library> [<library>...]]
+#   [RESOURCES <resource> [<resource>...]]
+#   [TESTS <testcasename> [<testcasename>...]])
+#
+#  If for some reason you need access to the executable target created,
+#  it can be found in ${${testdriver_name}_TARGET_NAME} as specified when
+#  you called add_boost_test
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Requires:
+# 	GetForceIncludeDefinitions
+# 	CopyResourcesToBuildTree
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+if(__add_boost_test)
+	return()
+endif()
+set(__add_boost_test YES)
+
+set(BOOST_TEST_TARGET_PREFIX "test")
+
+if(NOT Boost_FOUND)
+	find_package(Boost 1.34.0 QUIET)
+endif()
+if("${Boost_VERSION}0" LESS "1034000")
+	set(_shared_msg
+		"NOTE: boost::test-based targets and tests cannot "
+		"be added: boost >= 1.34.0 required but not found. "
+		"(found: '${Boost_VERSION}'; want >=103400) ")
+	if(ENABLE_TESTS)
+		message(FATAL_ERROR
+			${_shared_msg}
+			"You may disable ENABLE_TESTS to continue without the "
+			"tests.")
+	else()
+		message(STATUS
+			${_shared_msg}
+			"ENABLE_TESTS disabled, so continuing anyway.")
+	endif()
+endif()
+
+include(GetForceIncludeDefinitions)
+include(CopyResourcesToBuildTree)
+
+if(Boost_FOUND AND NOT "${Boost_VERSION}0" LESS "1034000")
+	set(_boosttesttargets_libs)
+	set(_boostConfig "BoostTestTargetsIncluded.h")
+	if(NOT Boost_UNIT_TEST_FRAMEWORK_LIBRARY)
+		find_package(Boost 1.34.0 QUIET COMPONENTS unit_test_framework)
+	endif()
+	if(Boost_UNIT_TEST_FRAMEWORK_LIBRARY)
+		set(_boosttesttargets_libs "${Boost_UNIT_TEST_FRAMEWORK_LIBRARY}")
+		if(Boost_USE_STATIC_LIBS)
+			set(_boostConfig "BoostTestTargetsStatic.h")
+		else()
+			set(_boostConfig "BoostTestTargetsDynamic.h")
+		endif()
+	endif()
+	get_filename_component(_moddir ${CMAKE_CURRENT_LIST_FILE} PATH)
+	configure_file("${_moddir}/${_boostConfig}"
+		"${CMAKE_CURRENT_BINARY_DIR}/BoostTestTargetConfig.h"
+		COPYONLY)
+	include_directories("${CMAKE_CURRENT_BINARY_DIR}")
+endif()
+
+function(add_boost_test _name)
+	if(NOT ENABLE_TESTS)
+		return()
+	endif()
+
+	# parse arguments
+	set(_nowhere)
+	set(_curdest _nowhere)
+	set(_val_args
+		SOURCES
+		FAIL_REGULAR_EXPRESSION
+		LAUNCHER
+		LIBRARIES
+		RESOURCES
+		TESTS)
+	set(_bool_args
+		USE_COMPILED_LIBRARY)
+	foreach(_arg ${_val_args} ${_bool_args})
+		set(${_arg})
+	endforeach()
+	foreach(_element ${ARGN})
+		list(FIND _val_args "${_element}" _val_arg_find)
+		list(FIND _bool_args "${_element}" _bool_arg_find)
+		if("${_val_arg_find}" GREATER "-1")
+			set(_curdest "${_element}")
+		elseif("${_bool_arg_find}" GREATER "-1")
+			set("${_element}" ON)
+			set(_curdest _nowhere)
+		else()
+			list(APPEND ${_curdest} "${_element}")
+		endif()
+	endforeach()
+
+	if(_nowhere)
+		message(FATAL_ERROR "Syntax error in use of add_boost_test!")
+	endif()
+
+	if(NOT SOURCES)
+		message(FATAL_ERROR
+			"Syntax error in use of add_boost_test: at least one source file required!")
+	endif()
+
+	if(Boost_FOUND AND NOT "${Boost_VERSION}0" LESS "1034000")
+
+		include_directories(${Boost_INCLUDE_DIRS})
+
+		set(includeType)
+		foreach(src ${SOURCES})
+			file(READ ${src} thefile)
+			if("${thefile}" MATCHES ".*BoostTestTargetConfig.h.*")
+				set(includeType CONFIGURED)
+				set(includeFileLoc ${src})
+				break()
+			elseif("${thefile}" MATCHES ".*boost/test/included/unit_test.hpp.*")
+				set(includeType INCLUDED)
+				set(includeFileLoc ${src})
+				set(_boosttesttargets_libs)	# clear this out - linking would be a bad idea
+				if(NOT
+					"${thefile}"
+					MATCHES
+					".*OVERRIDE_BOOST_TEST_INCLUDED_WARNING.*")
+					message("Please replace the include line in ${src} with this alternate include line instead:")
+					message("  \#include <BoostTestTargetConfig.h>")
+					message("Once you've saved your changes, re-run CMake. (See BoostTestTargets.cmake for more info)")
+				endif()
+				break()
+			endif()
+		endforeach()
+
+		if(NOT _boostTestTargetsNagged${_name} STREQUAL "${includeType}")
+			if("${includeType}" STREQUAL "CONFIGURED")
+				message(STATUS
+					"Test '${_name}' uses the CMake-configurable form of the boost test framework - congrats! (Including File: ${includeFileLoc})")
+			elseif("${includeType}" STREQUAL "INCLUDED")
+				message("In test '${_name}': ${includeFileLoc} uses the 'included' form of the boost unit test framework.")
+			else()
+				message("In test '${_name}': Didn't detect the CMake-configurable boost test include.")
+				message("Please replace your existing boost test include in that test with the following:")
+				message("  \#include <BoostTestTargetConfig.h>")
+				message("Once you've saved your changes, re-run CMake. (See BoostTestTargets.cmake for more info)")
+			endif()
+		endif()
+		set(_boostTestTargetsNagged${_name}
+			"${includeType}"
+			CACHE
+			INTERNAL
+			""
+			FORCE)
+
+
+		if(RESOURCES)
+			list(APPEND SOURCES ${RESOURCES})
+		endif()
+
+		# Generate a unique target name, using the relative binary dir
+		# and provided name. (transform all / into _ and remove all other
+		# non-alphabet characters)
+		file(RELATIVE_PATH
+			targetpath
+			"${CMAKE_BINARY_DIR}"
+			"${CMAKE_CURRENT_BINARY_DIR}")
+		string(REGEX REPLACE "[^A-Za-z/_]" "" targetpath "${targetpath}")
+		string(REPLACE "/" "_" targetpath "${targetpath}")
+
+		set(_target_name ${BOOST_TEST_TARGET_PREFIX}-${targetpath}-${_name})
+		set(${_name}_TARGET_NAME "${_target_name}" PARENT_SCOPE)
+
+		# Build the test.
+		add_executable(${_target_name} ${SOURCES})
+
+		list(APPEND LIBRARIES ${_boosttesttargets_libs})
+
+		if(LIBRARIES)
+			target_link_libraries(${_target_name} ${LIBRARIES})
+		endif()
+
+		if(RESOURCES)
+			set_property(TARGET ${_target_name} PROPERTY RESOURCE ${RESOURCES})
+			copy_resources_to_build_tree(${_target_name})
+		endif()
+
+		if(NOT Boost_TEST_FLAGS)
+#			set(Boost_TEST_FLAGS --catch_system_error=yes --output_format=XML)
+			set(Boost_TEST_FLAGS --catch_system_error=yes)
+		endif()
+
+		# TODO: Figure out why only recent boost handles individual test running properly
+
+		if(LAUNCHER)
+			set(_test_command ${LAUNCHER} "\$<TARGET_FILE:${_target_name}>")
+		else()
+			set(_test_command ${_target_name})
+		endif()
+
+		if(TESTS AND ( "${Boost_VERSION}" VERSION_GREATER "103799" ))
+			foreach(_test ${TESTS})
+				add_test(
+					${_name}-${_test}
+					${_test_command} --run_test=${_test} ${Boost_TEST_FLAGS}
+				)
+				if(FAIL_REGULAR_EXPRESSION)
+					set_tests_properties(${_name}-${_test}
+						PROPERTIES
+						FAIL_REGULAR_EXPRESSION
+						"${FAIL_REGULAR_EXPRESSION}")
+				endif()
+			endforeach()
+		else()
+			add_test(
+				${_name}-boost_test
+				${_test_command} ${Boost_TEST_FLAGS}
+			)
+			if(FAIL_REGULAR_EXPRESSION)
+				set_tests_properties(${_name}-boost_test
+					PROPERTIES
+					FAIL_REGULAR_EXPRESSION
+					"${FAIL_REGULAR_EXPRESSION}")
+			endif()
+		endif()
+
+		# CppCheck the test if we can.
+		if(COMMAND add_cppcheck)
+			add_cppcheck(${_target_name} STYLE UNUSED_FUNCTIONS)
+		endif()
+
+	endif()
+endfunction()

CMakeModules/BoostTestTargetsDynamic.h

@@ -0,0 +1,8 @@
+// Small header computed by CMake to set up boost test.
+// include AFTER #define BOOST_TEST_MODULE whatever
+// but before any other boost test includes.
+
+// Using the Boost UTF dynamic library
+
+#define BOOST_TEST_DYN_LINK
+#include <boost/test/unit_test.hpp>

CMakeModules/BoostTestTargetsIncluded.h

@@ -0,0 +1,7 @@
+// Small header computed by CMake to set up boost test.
+// include AFTER #define BOOST_TEST_MODULE whatever
+// but before any other boost test includes.
+
+// Using the Boost UTF included framework
+
+#include <boost/test/included/unit_test.hpp>

CMakeModules/BoostTestTargetsStatic.h

@@ -0,0 +1,7 @@
+// Small header computed by CMake to set up boost test.
+// include AFTER #define BOOST_TEST_MODULE whatever
+// but before any other boost test includes.
+
+// Using the Boost UTF static library
+
+#include <boost/test/unit_test.hpp>

CMakeModules/CheckCXXFeatures.cmake

@@ -0,0 +1,30 @@
+check_cxx_source_compiles("
+  #include <utility>
+  #include <type_traits>
+  std::make_index_sequence<0> t;
+  int main() {}" HAVE_STD_INDEX_SEQUENCE
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::remove_cv_t<const int> t;
+  int main() {}" HAVE_STD_REMOVE_CV_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::remove_cvref_t<const int&> t;
+  int main() {}" HAVE_STD_REMOVE_CVREF_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::enable_if_t<true, int> t;
+  int main() {}" HAVE_STD_ENABLE_IF_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::bool_constant<true> t;
+  int main() {}" HAVE_STD_BOOL_CONSTANT
+)

CMakeModules/CopyResourcesToBuildTree.cmake

@@ -0,0 +1,83 @@
+# - Copy the resources your app needs to the build tree.
+#
+#  copy_resources_to_build_tree(<target_name>)
+#
+# Requires CMake 2.6 or newer (uses the 'function' command)
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+if(__copy_resources_to_build_tree)
+	return()
+endif()
+set(__copy_resources_to_build_tree YES)
+
+function(copy_resources_to_build_tree _target)
+	get_target_property(_resources ${_target} RESOURCE)
+	if(NOT _resources)
+		# Bail if no resources
+		message(STATUS
+			"Told to copy resources for target ${_target}, but "
+			"no resources are set!")
+		return()
+	endif()
+
+	get_target_property(_path ${_target} LOCATION)
+	get_filename_component(_path "${_path}" PATH)
+
+	if(NOT MSVC AND NOT "${CMAKE_GENERATOR}" MATCHES "Makefiles")
+		foreach(_config ${CMAKE_CONFIGURATION_TYPES})
+			get_target_property(_path${_config} ${_target} LOCATION_${_config})
+			get_filename_component(_path${_config} "${_path${_config}}" PATH)
+			add_custom_command(TARGET ${_target}
+						POST_BUILD
+						COMMAND
+						${CMAKE_COMMAND}
+						ARGS -E make_directory "${_path${_config}}/"
+						COMMENT "Creating directory ${_path${_config}}/")
+		endforeach()
+	endif()
+
+	foreach(_res ${_resources})
+		if(NOT IS_ABSOLUTE "${_res}")
+			get_filename_component(_res "${_res}" ABSOLUTE)
+		endif()
+		get_filename_component(_name "${_res}" NAME)
+
+		if(MSVC)
+			# Working dir is solution file dir, not exe file dir.
+			add_custom_command(TARGET ${_target}
+				POST_BUILD
+				COMMAND
+				${CMAKE_COMMAND}
+				ARGS -E copy "${_res}" "${CMAKE_BINARY_DIR}/"
+				COMMENT "Copying ${_name} to ${CMAKE_BINARY_DIR}/ for MSVC")
+		else()
+			if("${CMAKE_GENERATOR}" MATCHES "Makefiles")
+				add_custom_command(TARGET ${_target}
+					POST_BUILD
+					COMMAND
+					${CMAKE_COMMAND}
+					ARGS -E copy "${_res}" "${_path}/"
+					COMMENT "Copying ${_name} to ${_path}/")
+			else()
+				foreach(_config ${CMAKE_CONFIGURATION_TYPES})
+					add_custom_command(TARGET ${_target}
+						POST_BUILD
+						COMMAND
+						${CMAKE_COMMAND}
+						ARGS -E copy "${_res}" "${_path${_config}}"
+						COMMENT "Copying ${_name} to ${_path${_config}}")
+				endforeach()
+
+			endif()
+		endif()
+	endforeach()
+endfunction()

CMakeModules/DetectArch.cmake

@@ -0,0 +1,37 @@
+IF(CMAKE_SYSTEM_PROCESSOR MATCHES amd64.*|x86_64.* OR CMAKE_GENERATOR MATCHES "Visual Studio.*Win64")
+  IF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86_64 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES i686.*|i386.*|x86.* OR WIN32)
+  IF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86_64 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES arm.* AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    SET(ARM 1)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES mips)
+    SET(MIPS 1)
+ENDIF()
+
+IF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
+  # using Clang
+  SET(CLANG 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "TinyCC")
+  # using TinyCC
+  SET(TINYCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+  # using GCC
+  SET(GCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Intel")
+  # using Intel C++
+  SET(INTELCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
+  # using Visual Studio C++
+  SET(MSVC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MIPSpro")
+  # using SGI MIPSpro
+  SET(MIPSPRO 1)
+ENDIF()

CMakeModules/FindAAX.cmake

@@ -0,0 +1,74 @@
+# Try to find AAX (AeonWave)
+# This module defines
+#
+# AAX_FOUND - if false, do not try to link to AAX
+# AAX_INCLUDE_DIR - where to find the headers
+# AAX_LIBRARIES - Link these to use AAX
+#
+# Copyright (C) 2016-2018 by Erik Hofman.
+# Copyright (C) 2016-2018 by Adalin B.V.
+#
+# $AAXDIR is an environment variable that would
+# correspond to the ./configure --prefix=$AAXDIR
+# used in building AAX.
+#
+# This file is Public Domain (www.unlicense.org)
+# This is free and unencumbered software released into the public domain.
+
+if (AAX_LIBRARY AND AAX_INCLUDE_DIR)
+  # in cache already
+  set(AAX_FOUND TRUE)
+else()
+  find_path(AAX_INCLUDE_DIR aax/aax.h
+    HINTS
+    $ENV{AAXDIR}
+    $ENV{ProgramFiles}/aax
+    $ENV{ProgramFiles}/AeonWave
+    $ENV{ProgramFiles}/Adalin/AeonWave
+    ${CMAKE_SOURCE_DIR}/aax
+    PATH_SUFFIXES include
+    PATHS
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local
+    /usr
+    /opt
+  )
+
+  find_library(AAX_LIBRARY 
+    NAMES AAX aax libAAX
+    HINTS
+    $ENV{AAXDIR}
+    $ENV{ProgramFiles}/AAX
+    $ENV{ProgramFiles}/AeonWave
+    $ENV{ProgramFiles}/Adalin/AeonWave
+    ${CMAKE_BUILD_DIR}/aax
+    PATH_SUFFIXES lib64 lib lib/${CMAKE_LIBRARY_ARCHITECTURE} libs64 libs libs/Win32 libs/Win64 bin
+    PATHS
+    ~/Library/Frameworks
+    /Library/Frameworks
+    /usr/local
+    /usr
+    /opt
+  )
+
+  set(AAX_DEFINITIONS "")
+  if (AAX_LIBRARY AND AAX_INCLUDE_DIR)
+    set(AAX_FOUND TRUE)
+  endif()
+
+  if (AAX_FOUND)
+    if (NOT Udns_FIND_QUIETLY)
+      message(STATUS "Found AeonWave: ${AAX_LIBRARIES}")
+    endif ()
+  else ()
+    if (Udns_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find AeonWave")
+    endif ()
+  endif ()
+
+  # show the AAX_INCLUDE_DIRS and AAX_LIBRARIES variables only in the advanced view
+  mark_as_advanced(AAX_INCLUDE_DIRS AAX_LIBRARIES)
+
+endif()
+

CMakeModules/FindALUT.cmake

@@ -1,67 +0,0 @@
-# Locate ALUT
-# This module defines
-# ALUT_LIBRARY
-# ALUT_FOUND, if false, do not try to link to ALUT 
-# ALUT_INCLUDE_DIR, where to find the headers
-#
-# $ALUTDIR is an environment variable that would
-# correspond to the ./configure --prefix=$ALUTDIR
-# used in building ALUT.
-#
-# Created by James Turner. This was influenced by the FindOpenAL.cmake module.
-
-#=============================================================================
-# Copyright 2005-2009 Kitware, Inc.
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distributed this file outside of CMake, substitute the full
-#  License text for the above reference.)
-
-# Per my request, CMake should search for frameworks first in
-# the following order:
-# ~/Library/Frameworks/OpenAL.framework/Headers
-# /Library/Frameworks/OpenAL.framework/Headers
-# /System/Library/Frameworks/OpenAL.framework/Headers
-#
-# On OS X, this will prefer the Framework version (if found) over others.
-# People will have to manually change the cache values of 
-# OPENAL_LIBRARY to override this selection or set the CMake environment
-# CMAKE_INCLUDE_PATH to modify the search paths.
-
-FIND_PATH(ALUT_INCLUDE_DIR alut.h
-  HINTS
-  $ENV{ALUTDIR}
-  PATH_SUFFIXES include/AL include/ALUT include
-  PATHS
-  ~/Library/Frameworks
-  /Library/Frameworks
-  /usr/local
-  /usr
-  /opt
-)
-
-FIND_LIBRARY(ALUT_LIBRARY 
-  NAMES ALUT alut
-  HINTS
-  $ENV{ALUTDIR}
-  PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
-  PATHS
-  ~/Library/Frameworks
-  /Library/Frameworks
-  /usr/local
-  /usr
-  /opt
-)
-
-
-SET(ALUT_FOUND "NO")
-IF(ALUT_LIBRARY AND ALUT_INCLUDE_DIR)
-  SET(ALUT_FOUND "YES")
-ENDIF(ALUT_LIBRARY AND ALUT_INCLUDE_DIR)
-

CMakeModules/FindSvnClient.cmake

@@ -1,76 +0,0 @@
-# Find Subversion client libraries, and dependencies
-# including APR (Apache Portable Runtime)
-
-include (CheckFunctionExists)
-include (CheckIncludeFile)
-include (CheckLibraryExists)
-
-macro(find_static_component comp libs)
-    # account for alternative Windows svn distribution naming
-    if(MSVC)
-      set(compLib "lib${comp}")
-    else(MSVC)
-      set(compLib "${comp}")
-    endif(MSVC)
-    
-    string(TOUPPER "${comp}" compLibBase)
-    set( compLibName ${compLibBase}_LIBRARY )
-
-    FIND_LIBRARY(${compLibName}
-      NAMES ${compLib}
-      HINTS $ENV{PLIBDIR}
-      PATH_SUFFIXES lib64 lib libs64 libs libs/Win32 libs/Win64
-      PATHS
-      /usr/local
-      /usr
-      /opt
-    )
-
-	list(APPEND ${libs} ${${compLibName}})
-endmacro()
-
-find_program(HAVE_APR_CONFIG apr-1-config)
-if(HAVE_APR_CONFIG) 
-        
-    execute_process(COMMAND apr-1-config --cppflags --includes
-        OUTPUT_VARIABLE APR_CFLAGS
-        OUTPUT_STRIP_TRAILING_WHITESPACE)
-        
-    execute_process(COMMAND apr-1-config --link-ld
-        OUTPUT_VARIABLE RAW_APR_LIBS
-        OUTPUT_STRIP_TRAILING_WHITESPACE)
-    
-# clean up some vars, or other CMake pieces complain
-	string(STRIP "${RAW_APR_LIBS}" APR_LIBS)
-
-else(HAVE_APR_CONFIG)
-    message(STATUS "apr-1-config not found, implement manual search for APR")
-endif(HAVE_APR_CONFIG)
-
-if(HAVE_APR_CONFIG OR MSVC)
-	find_path(LIBSVN_INCLUDE_DIR svn_client.h
-	  HINTS
-	  $ENV{LIBSVN_DIR}
-	  PATH_SUFFIXES include/subversion-1
-	  PATHS
-	  /usr/local
-	  /usr
-	  /opt
-	)
-	
-	set(LIBSVN_LIBRARIES "")
-	if (MSVC)
-		find_static_component("apr-1" LIBSVN_LIBRARIES)
-	else (MSVC)
-		list(APPEND LIBSVN_LIBRARIES ${APR_LIBS})
-	endif (MSVC)
-	find_static_component("svn_client-1" LIBSVN_LIBRARIES)
-	find_static_component("svn_subr-1" LIBSVN_LIBRARIES)
-	find_static_component("svn_ra-1" LIBSVN_LIBRARIES)
-
-	include(FindPackageHandleStandardArgs)
-	FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBSVN DEFAULT_MSG LIBSVN_LIBRARIES LIBSVN_INCLUDE_DIR)
-        if(NOT LIBSVN_FOUND)
-		set(LIBSVN_LIBRARIES "")
-        endif(NOT LIBSVN_FOUND)
-endif(HAVE_APR_CONFIG OR MSVC)

CMakeModules/FindUdns.cmake

@@ -0,0 +1,42 @@
+# - Try to find UDNS library
+# Once done this will define
+#
+#  UDNS_FOUND - system has UDNS
+#  UDNS_INCLUDE_DIRS - the UDNS include directory
+#  UDNS_LIBRARIES - Link these to use UDNS
+#  UDNS_DEFINITIONS - Compiler switches required for using UDNS
+#
+#  Copyright (c) 2016 Maciej Mrozowski <reavertm@gmail.com>
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+
+if (UDNS_LIBRARIES AND UDNS_INCLUDE_DIRS)
+  # in cache already
+  set(UDNS_FOUND TRUE)
+else ()
+  set(UDNS_DEFINITIONS "")
+
+  find_path(UDNS_INCLUDE_DIRS NAMES udns.h)
+  find_library(UDNS_LIBRARIES NAMES udns)
+
+  if (UDNS_INCLUDE_DIRS AND UDNS_LIBRARIES)
+    set(UDNS_FOUND TRUE)
+  endif ()
+
+  if (UDNS_FOUND)
+    if (NOT Udns_FIND_QUIETLY)
+      message(STATUS "Found UDNS: ${UDNS_LIBRARIES}")
+    endif ()
+  else ()
+    if (Udns_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find UDNS")
+    endif ()
+  endif ()
+
+  # show the UDNS_INCLUDE_DIRS and UDNS_LIBRARIES variables only in the advanced view
+  mark_as_advanced(UDNS_INCLUDE_DIRS UDNS_LIBRARIES)
+
+endif ()

CMakeModules/GetForceIncludeDefinitions.cmake

@@ -0,0 +1,44 @@
+# - Get the platform-appropriate flags to add to force inclusion of a file
+#
+# The most common use of this is to use a generated config.h-type file
+# placed out of the source tree in all files.
+#
+#  get_force_include_definitions(var forcedincludefiles...) -
+#   where var is the name of  your desired output variable, and everything
+#   else is a source file to forcibly include.
+#   a list item to be filtered.
+#
+# Original Author:
+# 2009-2010 Ryan Pavlik <rpavlik@iastate.edu> <abiryan@ryand.net>
+# http://academic.cleardefinition.com
+# Iowa State University HCI Graduate Program/VRAC
+#
+# Copyright Iowa State University 2009-2010.
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+if(__get_force_include_definitions)
+	return()
+endif()
+set(__get_force_include_definitions YES)
+
+function(get_force_include_definitions var)
+	set(_flagprefix)
+	if(CMAKE_COMPILER_IS_GNUCXX)
+		set(_flag "-include")
+	elseif(MSVC)
+		set(_flag "/FI")
+	else()
+		message(SEND_ERROR "You don't seem to be using MSVC or GCC, but")
+		message(SEND_ERROR "the project called get_force_include_definitions.")
+		message(SEND_ERROR "Contact this project with the name of your")
+		message(FATAL_ERROR "compiler and preferably the flag to force includes")
+	endif()
+
+	set(_out)
+	foreach(_item ${ARGN})
+		list(APPEND _out "${_flag} \"${_item}\"")
+	endforeach()
+	set(${var} "${_out}" PARENT_SCOPE)
+endfunction()

CMakeModules/OldGNUInstallDirs.cmake

@@ -1,182 +0,0 @@
-# - Define GNU standard installation directories
-# Provides install directory variables as defined for GNU software:
-#  http://www.gnu.org/prep/standards/html_node/Directory-Variables.html
-# Inclusion of this module defines the following variables:
-#  CMAKE_INSTALL_<dir>      - destination for files of a given type
-#  CMAKE_INSTALL_FULL_<dir> - corresponding absolute path
-# where <dir> is one of:
-#  BINDIR           - user executables (bin)
-#  SBINDIR          - system admin executables (sbin)
-#  LIBEXECDIR       - program executables (libexec)
-#  SYSCONFDIR       - read-only single-machine data (etc)
-#  SHAREDSTATEDIR   - modifiable architecture-independent data (com)
-#  LOCALSTATEDIR    - modifiable single-machine data (var)
-#  LIBDIR           - object code libraries (lib or lib64)
-#  INCLUDEDIR       - C header files (include)
-#  OLDINCLUDEDIR    - C header files for non-gcc (/usr/include)
-#  DATAROOTDIR      - read-only architecture-independent data root (share)
-#  DATADIR          - read-only architecture-independent data (DATAROOTDIR)
-#  INFODIR          - info documentation (DATAROOTDIR/info)
-#  LOCALEDIR        - locale-dependent data (DATAROOTDIR/locale)
-#  MANDIR           - man documentation (DATAROOTDIR/man)
-#  DOCDIR           - documentation root (DATAROOTDIR/doc/PROJECT_NAME)
-# Each CMAKE_INSTALL_<dir> value may be passed to the DESTINATION options of
-# install() commands for the corresponding file type.  If the includer does
-# not define a value the above-shown default will be used and the value will
-# appear in the cache for editing by the user.
-# Each CMAKE_INSTALL_FULL_<dir> value contains an absolute path constructed
-# from the corresponding destination by prepending (if necessary) the value
-# of CMAKE_INSTALL_PREFIX.
-
-#=============================================================================
-# Copyright 2011 Nikita Krupen'ko <krnekit@gmail.com>
-# Copyright 2011 Kitware, Inc.
-#
-# Distributed under the OSI-approved BSD License (the "License");
-# see accompanying file Copyright.txt for details.
-#
-# This software is distributed WITHOUT ANY WARRANTY; without even the
-# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-# See the License for more information.
-#=============================================================================
-# (To distribute this file outside of CMake, substitute the full
-#  License text for the above reference.)
-
-# Installation directories
-#
-if(NOT DEFINED CMAKE_INSTALL_BINDIR)
-  set(CMAKE_INSTALL_BINDIR "bin" CACHE PATH "user executables (bin)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_SBINDIR)
-  set(CMAKE_INSTALL_SBINDIR "sbin" CACHE PATH "system admin executables (sbin)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_LIBEXECDIR)
-  set(CMAKE_INSTALL_LIBEXECDIR "libexec" CACHE PATH "program executables (libexec)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_SYSCONFDIR)
-  set(CMAKE_INSTALL_SYSCONFDIR "etc" CACHE PATH "read-only single-machine data (etc)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_SHAREDSTATEDIR)
-  set(CMAKE_INSTALL_SHAREDSTATEDIR "com" CACHE PATH "modifiable architecture-independent data (com)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_LOCALSTATEDIR)
-  set(CMAKE_INSTALL_LOCALSTATEDIR "var" CACHE PATH "modifiable single-machine data (var)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-  set(_LIBDIR_DEFAULT "lib")
-  # Override this default 'lib' with 'lib64' iff:
-  #  - we are on Linux system but NOT cross-compiling
-  #  - we are NOT on debian
-  #  - we are on a 64 bits system
-  # reason is: amd64 ABI: http://www.x86-64.org/documentation/abi.pdf
-  # Note that the future of multi-arch handling may be even
-  # more complicated than that: http://wiki.debian.org/Multiarch
-  if(CMAKE_SYSTEM_NAME MATCHES "Linux"
-      AND NOT CMAKE_CROSSCOMPILING
-      AND NOT EXISTS "/etc/debian_version")
-    if(NOT DEFINED CMAKE_SIZEOF_VOID_P)
-      message(AUTHOR_WARNING
-        "Unable to determine default CMAKE_INSTALL_LIBDIR directory because no target architecture is known. "
-        "Please enable at least one language before including GNUInstallDirs.")
-    else()
-      if("${CMAKE_SIZEOF_VOID_P}" EQUAL "8")
-        set(_LIBDIR_DEFAULT "lib64")
-      endif()
-    endif()
-  endif()
-  set(CMAKE_INSTALL_LIBDIR "${_LIBDIR_DEFAULT}" CACHE PATH "object code libraries (${_LIBDIR_DEFAULT})")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_INCLUDEDIR)
-  set(CMAKE_INSTALL_INCLUDEDIR "include" CACHE PATH "C header files (include)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_OLDINCLUDEDIR)
-  set(CMAKE_INSTALL_OLDINCLUDEDIR "/usr/include" CACHE PATH "C header files for non-gcc (/usr/include)")
-endif()
-
-if(NOT DEFINED CMAKE_INSTALL_DATAROOTDIR)
-  set(CMAKE_INSTALL_DATAROOTDIR "share" CACHE PATH "read-only architecture-independent data root (share)")
-endif()
-
-#-----------------------------------------------------------------------------
-# Values whose defaults are relative to DATAROOTDIR.  Store empty values in
-# the cache and store the defaults in local variables if the cache values are
-# not set explicitly.  This auto-updates the defaults as DATAROOTDIR changes.
-
-if(NOT CMAKE_INSTALL_DATADIR)
-  set(CMAKE_INSTALL_DATADIR "" CACHE PATH "read-only architecture-independent data (DATAROOTDIR)")
-  set(CMAKE_INSTALL_DATADIR "${CMAKE_INSTALL_DATAROOTDIR}")
-endif()
-
-if(NOT CMAKE_INSTALL_INFODIR)
-  set(CMAKE_INSTALL_INFODIR "" CACHE PATH "info documentation (DATAROOTDIR/info)")
-  set(CMAKE_INSTALL_INFODIR "${CMAKE_INSTALL_DATAROOTDIR}/info")
-endif()
-
-if(NOT CMAKE_INSTALL_LOCALEDIR)
-  set(CMAKE_INSTALL_LOCALEDIR "" CACHE PATH "locale-dependent data (DATAROOTDIR/locale)")
-  set(CMAKE_INSTALL_LOCALEDIR "${CMAKE_INSTALL_DATAROOTDIR}/locale")
-endif()
-
-if(NOT CMAKE_INSTALL_MANDIR)
-  set(CMAKE_INSTALL_MANDIR "" CACHE PATH "man documentation (DATAROOTDIR/man)")
-  set(CMAKE_INSTALL_MANDIR "${CMAKE_INSTALL_DATAROOTDIR}/man")
-endif()
-
-if(NOT CMAKE_INSTALL_DOCDIR)
-  set(CMAKE_INSTALL_DOCDIR "" CACHE PATH "documentation root (DATAROOTDIR/doc/PROJECT_NAME)")
-  set(CMAKE_INSTALL_DOCDIR "${CMAKE_INSTALL_DATAROOTDIR}/doc/${PROJECT_NAME}")
-endif()
-
-#-----------------------------------------------------------------------------
-
-mark_as_advanced(
-  CMAKE_INSTALL_BINDIR
-  CMAKE_INSTALL_SBINDIR
-  CMAKE_INSTALL_LIBEXECDIR
-  CMAKE_INSTALL_SYSCONFDIR
-  CMAKE_INSTALL_SHAREDSTATEDIR
-  CMAKE_INSTALL_LOCALSTATEDIR
-  CMAKE_INSTALL_LIBDIR
-  CMAKE_INSTALL_INCLUDEDIR
-  CMAKE_INSTALL_OLDINCLUDEDIR
-  CMAKE_INSTALL_DATAROOTDIR
-  CMAKE_INSTALL_DATADIR
-  CMAKE_INSTALL_INFODIR
-  CMAKE_INSTALL_LOCALEDIR
-  CMAKE_INSTALL_MANDIR
-  CMAKE_INSTALL_DOCDIR
-  )
-
-# Result directories
-#
-foreach(dir
-    BINDIR
-    SBINDIR
-    LIBEXECDIR
-    SYSCONFDIR
-    SHAREDSTATEDIR
-    LOCALSTATEDIR
-    LIBDIR
-    INCLUDEDIR
-    OLDINCLUDEDIR
-    DATAROOTDIR
-    DATADIR
-    INFODIR
-    LOCALEDIR
-    MANDIR
-    DOCDIR
-    )
-  if(NOT IS_ABSOLUTE ${CMAKE_INSTALL_${dir}})
-    set(CMAKE_INSTALL_FULL_${dir} "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_${dir}}")
-  else()
-    set(CMAKE_INSTALL_FULL_${dir} "${CMAKE_INSTALL_${dir}}")
-  endif()
-endforeach()

CMakeModules/SimGearComponent.cmake

@@ -1,23 +1,26 @@
 
 macro(simgear_component_common name includePath sourcesList sources headers)
-    if (SIMGEAR_SHARED)
+    set(fc${sourcesList} ${name})
+    set(fh${sourcesList} ${name})
+    foreach(s ${sources})
+        set_property(GLOBAL
+            APPEND PROPERTY ${sourcesList} "${CMAKE_CURRENT_SOURCE_DIR}/${s}")
+        set(fc${sourcesList} "${fc${sourcesList}}#${CMAKE_CURRENT_SOURCE_DIR}/${s}")
+    endforeach()
 
-        foreach(s ${sources})
-            set_property(GLOBAL
-                APPEND PROPERTY ${sourcesList} "${CMAKE_CURRENT_SOURCE_DIR}/${s}")
-        endforeach()
+	foreach(h ${headers})
+		set_property(GLOBAL
+			APPEND PROPERTY PUBLIC_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/${h}")
+        set(fh${sourcesList} "${fh${sourcesList}}#${CMAKE_CURRENT_SOURCE_DIR}/${h}")
 
-		foreach(h ${headers})
-			set_property(GLOBAL
-				APPEND PROPERTY PUBLIC_HEADERS "${CMAKE_CURRENT_SOURCE_DIR}/${h}")
-		endforeach()
-        
-    else()
-        set(libName "sg${name}")
-        add_library(${libName} STATIC ${sources} ${headers})
+        # also append headers to the sources list, so that IDEs find the files
+        # correctly (otherwise they are not in the project)
+        set_property(GLOBAL
+            APPEND PROPERTY ${sourcesList} "${CMAKE_CURRENT_SOURCE_DIR}/${h}")
+	endforeach()
 
-        install (TARGETS ${libName} ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-    endif()
+    set_property(GLOBAL APPEND PROPERTY FG_GROUPS_${sourcesList}_C "${fc${sourcesList}}@")
+    set_property(GLOBAL APPEND PROPERTY FG_GROUPS_${sourcesList}_H "${fh${sourcesList}}@")
     
     install (FILES ${headers}  DESTINATION include/simgear/${includePath})
 endmacro()

COPYING

@@ -2,7 +2,7 @@
                        Version 2, June 1991
 
  Copyright (C) 1991 Free Software Foundation, Inc.
-                    59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -464,7 +464,7 @@ convey the exclusion of warranty; and each file should have at least the
 
     You should have received a copy of the GNU Library General Public
     License along with this library; if not, write to the Free
-    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
 Also add information on how to contact you by electronic and paper mail.
 

DoxygenMain.cxx

@@ -2,6 +2,10 @@
    documentation.  It has a .cxx extension so that emacs will happily
    autoindent correctly. */
 
+/**
+ * \namespace simgear
+ * \brief \ref index "SimGear" main namespace.
+ */
 /** \mainpage SimGear
  * Simulation, Visualization, and Game development libraries.
 

INSTALL

@@ -0,0 +1,56 @@
+How to build SimGear
+====================
+
+SimGear uses the CMake build system to generate a platform-specific
+build environment.  CMake reads the CMakeLists.txt files that you'll
+find throughout the source directories, checks for installed
+dependencies and then generates the appropriate build system.
+
+If you don't already have CMake installed on your system you can grab
+it from http://www.cmake.org, use version 2.6.4 or later.
+
+Under unices (i.e. Linux, Solaris, Free-BSD, HP-Ux, OSX) use the cmake
+or ccmake command-line utils. Preferably, create an out-of-source
+build directory and run cmake or ccmake from there. The advantage to
+this approach is that the temporary files created by CMake won't
+clutter the source directory, and also makes it possible to have
+multiple independent build targets by creating multiple build
+directories. In a directory alongside the SimGear source directory
+use:
+
+    mkdir sgbuild
+    cd sgbuild
+    cmake ../simgear -DCMAKE_BUILD_TYPE=Release
+    make
+    sudo make install
+
+
+Build Dependencies
+==================
+SimGear depends on a number of 3rd party libraries, the most notable
+being:
+
+* OpenSceneGraph (OSG) - see README.OSG
+* zlib compression library - see README.zlib
+* Open Audio Library (OpenAL) - see README.OpenAL
+* Subversion Client Library (optional dependency)
+
+
+Further information
+===================
+* README.cmake
+  for more detailed CMake instructions
+
+* README.msvc
+  in the FlightGear source package for more Windows-specific instructions
+
+* FlightGear Wiki
+  http://wiki.flightgear.org/Building_Flightgear
+
+* FlightGear Forums
+  For help on building see: http://www.flightgear.org/forums
+  => Support/Compiling
+
+* FlightGear Mailing lists
+  http://wiki.flightgear.org/index.php/Mailing_list
+

README

@@ -1 +1,15 @@
-[ Nothing here at this time. ]
+SimGear - Simulator Construction Tools
+======================================
+http://www.flightgear.org
+
+SimGear is a set of open-source libraries designed to be used as building
+blocks for quickly assembling 3d simulations, games, and visualization
+applications.
+
+SimGear is developed by the FlightGear project and also provides the base
+for the FlightGear Flight Simulator.
+
+Source code for SimGear is released under the GNU Library General Public
+License (LGPL) - see COPYING for license details.
+
+See INSTALL file for help on building SimGear.

README.OSG

@@ -3,7 +3,7 @@
 You *must* have OpenSceneGraph (OSG) installed to build this version of
 FlightGear.
 
-Notice that FlightGear 2.6.0 requires at least version 3.0.0.
+Notice that this version of SimGear/FlightGear requires at least OSG 3.0.0.
 
 You can get the latest version of OSG from:
 

README.OpenAL

@@ -1,29 +0,0 @@
-[This file is mirrored in both the FlightGear and SimGear packages.]
-
-You *must* have the development components of OpenAL installed on your system
-to build FlightGear!"  You can get a copy here:
-
-      http://connect.creativelabs.com/openal/default.aspx
-
-Build notes:
-
-You can download a versioned release of the openal library from 
-http://www.openal.org/downloads.html. Download the openal source,
-release 0.0.8 (dated February 11, 2006) and run:  
-tar xjvf openal-soft-1.5.304.tar.bz2
-cd openal-soft-1.5.304/
-ccmake .
-
-[ While running ccmake: press 'c' to configure, press 'c' once more, and
-  then press 'g' to generate and exit ]
-
-
-The alut library is also required, but comes separately in the package
-freelut-1.1.0.tar.gz. This package can be downloaded from the same page
-(http://connect.creativelabs.com/openal/default.aspx). Download and run:
-tar xzvf freelut-1.1.0.tar.gz
-cd freealut-1.1.0
-./configure
-make
-sudo make install
-

README.cmake

@@ -0,0 +1,161 @@
+Getting started with CMake
+==========================
+
+(These instructions apply to Unix-like systems, including Cygwin and Mac. To
+build using Visual Studio or some other IDE supported by CMake, most of the
+information below still applies. Otherwise see
+http://wiki.flightgear.org/Building_Flightgear for Windows specific build
+instructions.)
+
+Always compile in a separate directory to the code. For example, if the
+code (eg, from Git) is at /home/curt/projects/simgear, you might create
+/home/curt/projects/sgbuild. Change into the new directory, and run
+
+    cmake ../simgear
+
+To generate standard Unix Makefiles in sgbuild.
+
+Probably you want to specify an install prefix:
+
+    cmake ../simgear -DCMAKE_INSTALL_PREFIX=/usr
+
+Note the install prefix is automatically searched for required libraries
+and header files, so if you install OpenSceneGraph to the same prefix,
+most configuration options are unnecessary.
+
+If for some reason you have a dependency (or several) at a different prefix,
+you can specify one or more via CMAKE_PREFIX_PATH:
+
+    cmake ../simgear -DCMAKE_PREFIX_PATH="/opt/local;/opt/fgfs"
+
+(note the use of semi-colons to specify multiple prefix paths)
+
+Standard prefixes are searched automatically (/usr, /usr/local, /opt/local)
+
+Most dependencies also expose an environment variable to specify their
+installation directory explicitly eg OSG_DIR. Any of the methods
+described above will work, but specifying an INSTALL_PREFIX or PREFIX_PATH is
+usually simpler.
+
+By default, we select a release build. To create a debug build, use
+
+    cmake ../simgear -DCMAKE_BUILD_TYPE=Debug
+
+(or MinSizeRel, or RelWithDbg)
+
+Debug builds will automatically use corresponding debug builds of required
+libraries, if they are available. For example you can install debug builds of
+OpenSceneGraph, and a debug SimGear build will use them.
+
+(Debug builds of libraries have the 'd' suffix by default - Release builds
+have no additional suffix)
+
+Note most IDE projects (eg Xcode and Visual Studio) support building all the
+build types from the same project, so you can omit the CMAKE_BUILD_TYPE option
+when running cmake, and simply pick the build configuration as normal in the
+IDE.
+
+It's common to have several build directories with different build
+configurations, eg
+
+    /home/curt/projects/simgear (the git clone)
+    /home/curt/projects/sgdebug
+    /home/curt/projects/sgrelease
+    /home/curt/projects/sg-with-svn-osg
+
+To set an optional feature, do
+
+    cmake ../simgear -DFEATURE_NAME=ON
+
+(or 'OFF' to disable )
+
+To see the variables that can be configured / are currently defined, you can
+run one of the GUI front ends, or the following command:
+
+    cmake ../simgear -L
+
+Add 'A' to see all the options (including advanced options), or 'H' to see
+the help for each option (similar to running configure --help under autoconf):
+
+    cmake ../simgear -LH
+
+
+Build Targets
+=============
+
+For a Unix makefile build, 'make dist', 'make uninstall' and 'make test' are
+all available and should work as expected. 'make clean' is also as normal,
+but there is *no* 'make distclean' target. The equivalent is to completely
+remove your build directory, and start with a fresh one.
+
+Adding new files to the build
+
+Add source files to the SOURCES list, and headers to the HEADERS list. Note
+technically you only need to add source files, but omitting headers confuses
+project generation and distribution / packaging targets.
+
+For target conditional files, you can append to the SOURCES or HEADERS lists
+inside an if() test, for example:
+
+    if(APPLE)
+        list(APPEND SOURCES extraFile1.cxx extraFile2.cxx)
+    endif()
+
+Setting include directories
+
+In any CMakeList.txt, you can do the following:
+
+    include_directories(${PROJECT_SOURCE_DIR}/some/path)
+
+For example, this can be done in particular subdirectory, or at the project
+root, or an intermediate level.
+
+Setting target specific compile flags, includes or defines
+
+Use set_target_property(), for example
+
+    set_target_property(fgfs PROPERTIES
+            COMPILE_DEFINITIONS FOO BAR=1)
+
+You can set a property on an individual source file:
+
+    set_property(SOURCE myfile.cxx PROPERTY COMPILE_FLAGS "-Wno-unsigned-compare")
+
+Detecting Features / Libraries
+
+For most standard libraries (Gtk, wxWidget, Python, GDAL, Qt, libXml, Boost),
+cmake provides a standard helper. To see the available modules, run:
+
+     cmake --help-module-list
+
+In the root CMakeLists file, use a statement like:
+
+    find_package(OpenGL REQUIRED)
+
+Each package helper sets various variables such aaa_FOUND, aaa_INCLUDE_DIR,
+and aaa_LIBRARY. Depending on the complexity of the package, these variables
+might have different names (eg, OPENSCENEGRAPH_LIBRARIES).
+
+If there's no standard helper for a library you need, find a similar one, copy
+it to CMakeModules/FindABC.cmake, and modify the code to fit. Generally this
+is pretty straightforward. The built-in modules reside in the Cmake 'share'
+directory, eg /usr/share/cmake/modules on Unix systems.
+
+Note libraries support by pkg-config can be handled directly, with no need
+to create a custom FindABC helper.
+
+Adding a new executable target
+
+    add_executable(myexecutable ${SOURCES} ${HEADERS})
+    target_link_libraries(myexecutable .... libraries ... )
+    install(TARGETS myexecutable RUNTIME DESTINATION bin)
+
+(If the executable should not be installed, omit the final line above)
+
+If you add an additional line
+
+    add_test(testname ${EXECUTABLE_OUTPUT_PATH}/myexecutable)
+
+Then running 'make test' will run your executable as a unit test. The
+executable should return either a success or failure result code.
+

README.plib

@@ -1,32 +0,0 @@
-[This file is mirrored in both the FlightGear and SimGear packages.]
-
-You *must* have plib version 1.8.5 or later installed on your system
-to build FlightGear!"  Flight Gear is no longer compatible with the
-earlier versions of the library.
-
-You can get the latest version of plib from:
-
-    http://plib.sourceforge.net
-
-Build notes:
-
-You should be able to just run "./configure" to configure the package
-and use all of plib's defaults.  Then run "make" followed by "make
-install".  By default, plib installs itself into /usr so if you don't
-like this, be sure to specify an alternate prefix such as --prefix=/usr/local
-
-As of this writing (2007-11-18), many linux distributions are shipped with a 
-working version of plib, so chances are that this library is already 
-installed. It should be noted, that currently plib version no longer compiles
-using recent versions of gcc (confirmed on version gcc 4.1.2, as shipped with 
-SuSe 10.2). As a workaround, it is possible to either use plib SVN. Run the 
-following commands: 
-
-
-svn co https://plib.svn.sourceforge.net/svnroot/plib/trunk plib
-cd plib
-./autogen.sh
-./configure
-make
-make install
-

README.sound

@@ -0,0 +1,39 @@
+[This file is mirrored in both the FlightGear and SimGear packages.]
+
+For Sound support FlightGear requires one of the two following packages:
+- OpenAL
+- AeonWave
+
+== OpenAL ===
+
+You *must* have the development components of OpenAL installed on your system
+to build FlightGear!"  You can get a copy here:
+
+      http://connect.creativelabs.com/openal/default.aspx
+
+Build notes:
+
+You can download a versioned release of the openal library from
+http://www.openal.org/downloads.html. Download the openal source,
+release 0.0.8 (dated February 11, 2006) and run:
+tar xjvf openal-soft-1.5.304.tar.bz2
+cd openal-soft-1.5.304/
+ccmake .
+
+[ While running ccmake: press 'c' to configure, press 'c' once more, and
+  then press 'g' to generate and exit ]
+
+
+== AeonWave ===
+
+For FlightGear AeonWave has a number of advantages over OpenAL:
+* Correct Doppler effect behavior
+* Default distance attenuation frequency filtering
+* Native support for 29 types of audio formats.
+* Native support for wav, mp3, vorbis and raw file formats.
+
+The source code of AeonWave can be found on GitHub:
+https://github.com/adalinbv
+
+Optimized binary packages are available at:
+http://www.adalin.com/

SimGear.spec.in

@@ -1,76 +0,0 @@
-%define ver	@VERSION@
-%define rel	1
-%define prefix	/usr
-
-Summary:	Simulator Construction Gear.
-Name:		@PACKAGE@
-Version:	%ver
-Release:	%rel
-Copyright:	LGPL
-Group:		Libraries/Graphics
-Source:		%{name}-%{version}.tar.gz
-#URL:		
-BuildRoot:	/tmp/%{name}-%{version}-%{rel}-root
-Packager:	Fill In As You Wish
-Docdir:		%{prefix}/doc
-
-%description
-This package contains a tools and libraries useful for constructing 
-simulation and visualization applications such as FlightGear or TerraGear. 
-
-Authors:
-	N/A
-
-%prep
-%setup -n %{name}-%{version}
-
-
-%build
-# Needed for snapshot releases.
-if [ ! -f configure ]; then
-	CFLAGS="$RPM_OPT_FLAGS" ./autogen.sh --prefix=%prefix
-else
-	CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%prefix
-fi
-
-if [ "$SMP" != "" ]; then
-	JSMP	= '"MAKE=make -k -j $SMP"'
-fi
-
-make ${JSMP};
-
-
-%install
-[ -d ${RPM_BUILD_ROOT} ] && rm -rf ${RPM_BUILD_ROOT}
-
-make prefix=${RPM_BUILD_ROOT}%{prefix} install
-
-#
-# Generating file lists and store them in file-lists
-# Starting with the directory listings
-#
-find ${RPM_BUILD_ROOT}%{prefix}/{bin,include,lib} -type d | sed "s#^${RPM_BUILD_ROOT}#\%attr (-\,root\,root) \%dir #" > file-lists
-%{?ETCDR:find ${RPM_BUILD_ROOT}%{!?SYSCF:%{prefix}}/etc -type d | sed "s#^${RPM_BUILD_ROOT}#\%attr (-\,root\,root) \%dir #" >> file-lists}
-
-#
-# Then, the file listings
-#
-echo "%defattr (-, root, root)" >> file-lists
-%{?ETCDR:find ${RPM_BUILD_ROOT}%{!?SYSCF:%{prefix}}/etc/%{name}.conf -type f | sed -e "s#^${RPM_BUILD_ROOT}#%config #g" >> file-lists}
-find ${RPM_BUILD_ROOT}%{prefix} -type f | sed -e "s#^${RPM_BUILD_ROOT}##g" >> file-lists
-
-
-%clean
-(cd ..; rm -rf %{name}-%{version} ${RPM_BUILD_ROOT})
-
-
-%files -f file-lists
-%defattr (-, root, root)
-%doc AUTHORS
-%doc COPYING
-%doc ChangeLog
-%doc INSTALL
-%doc NEWS
-%doc README
-%doc %{name}.spec.in
-

SimGearConfig.cmake.in

@@ -0,0 +1,26 @@
+include(CMakeFindDependencyMacro)
+
+find_dependency(ZLIB)
+find_dependency(Threads)
+
+# OSG
+
+set(SIMGEAR_HEADLESS @SIMGEAR_HEADLESS@)
+set(SIMGEAR_SOUND @ENABLE_SOUND@)
+set(USE_AEONWAVE @USE_AEONWAVE@)
+
+# OpenAL isn't a public dependency, so maybe not needed
+#if (SIMGEAR_SOUND)
+#  find_dependency(OpenAL)
+#endif()
+
+# SSE/SSE2 support
+
+set(ENABLE_SIMD @ENABLE_SIMD@)
+
+# Alternative terrain engine based on pagedLOD
+
+set(ENABLE_GDAL @ENABLE_GDAL@)
+set(ENABLE_OPENMP @ENABLE_OPENMP@)
+
+include("${CMAKE_CURRENT_LIST_DIR}/SimGearTargets.cmake")

TODO

@@ -1 +0,0 @@
-03/25/2001 - Resolve location of Sky dome implimentation documentation.

projects/VC100/README

@@ -1,2 +0,0 @@
-The handmade VS2010 project files have been replaced by the Cmake build system.
-Please use Cmake to build FlightGear with Visual Studio 2010.

projects/VC90/.gitignore

@@ -1,3 +0,0 @@
-*.user
-Win32
-x64

simgear/.gitignore

@@ -1,3 +1,2 @@
 simgear_config.h
-simgear_config.h.*
 version.h

simgear/CMakeLists.txt

@@ -1,22 +1,26 @@
 
 file(WRITE ${PROJECT_BINARY_DIR}/simgear/version.h "#define SIMGEAR_VERSION ${SIMGEAR_VERSION}")
 
-foreach( mylibfolder 
+foreach( mylibfolder
         bucket
+        bvh
         debug
+        embedded_resources
         ephemeris
         io
         magvar
         math
         misc
         nasal
+        nasal/cppbind
         props
-        route
         serial
+        std
         structure
         threads
         timing
         xml
+        package
     )
 
     add_subdirectory(${mylibfolder})
@@ -24,6 +28,7 @@ foreach( mylibfolder
 endforeach( mylibfolder )
 
 if(NOT SIMGEAR_HEADLESS)
+    add_subdirectory(canvas)
     add_subdirectory(environment)
     add_subdirectory(screen)
     add_subdirectory(scene)
@@ -39,59 +44,149 @@ endif(ENABLE_RTI)
 set(HEADERS compiler.h constants.h sg_inlines.h ${PROJECT_BINARY_DIR}/simgear/version.h)
 install (FILES ${HEADERS}  DESTINATION include/simgear/)
 
+get_property(coreSources GLOBAL PROPERTY CORE_SOURCES)
+get_property(sceneSources GLOBAL PROPERTY SCENE_SOURCES)
+get_property(publicHeaders GLOBAL PROPERTY PUBLIC_HEADERS)
+get_property(localExpatSources GLOBAL PROPERTY LOCAL_EXPAT_SOURCES)
+
 if(SIMGEAR_SHARED)
-    message(STATUS "building shared library")
-    get_property(coreSources GLOBAL PROPERTY CORE_SOURCES)
-    get_property(sceneSources GLOBAL PROPERTY SCENE_SOURCES)
-    get_property(publicHeaders GLOBAL PROPERTY PUBLIC_HEADERS)
+    message(STATUS "Library building mode: SHARED LIBRARIES")
+    add_library(SimGearCore SHARED ${coreSources} ${localExpatSources})
 
-    add_library(SimGearCore SHARED ${coreSources})
-    set_property(TARGET SimGearCore PROPERTY COMPILE_FLAGS "-DNO_OPENSCENEGRAPH_INTERFACE=1")
-    
-  # set_property(TARGET SimGearCore PROPERTY FRAMEWORK 1)
-  #  message(STATUS "public header: ${publicHeaders}")
-  #  set_property(TARGET SimGearCore PROPERTY PUBLIC_HEADER "${publicHeaders}")
     set_property(TARGET SimGearCore PROPERTY LINKER_LANGUAGE CXX)
-
     set_property(TARGET SimGearCore PROPERTY VERSION   ${SIMGEAR_VERSION})
     set_property(TARGET SimGearCore PROPERTY SOVERSION ${SIMGEAR_SOVERSION})
 
-    target_link_libraries(SimGearCore ${ZLIB_LIBRARY} ${RT_LIBRARY})
-    install(TARGETS SimGearCore LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
     if(NOT SIMGEAR_HEADLESS)
-        if(LIBSVN_FOUND)
-            add_definitions(${APR_CFLAGS})
-
-            IF(APPLE)
-                set_property(SOURCE scene/tsync/terrasync.cxx PROPERTY COMPILE_FLAGS "-iwithsysroot ${LIBSVN_INCLUDE_DIR}")
-            ELSE()
-                include_directories(${LIBSVN_INCLUDE_DIR})
-            ENDIF(APPLE)
-        endif(LIBSVN_FOUND)
-        
-        list(APPEND sceneSources scene/util/SGCoreOSGDependant.cxx)
-        
         add_library(SimGearScene SHARED ${sceneSources})
-      # set_property(TARGET SimGearScene PROPERTY FRAMEWORK 1)
-      # set_property(TARGET SimGearScene PROPERTY PUBLIC_HEADER "${publicHeaders}")
         set_property(TARGET SimGearScene PROPERTY LINKER_LANGUAGE CXX)
         set_property(TARGET SimGearScene PROPERTY VERSION   ${SIMGEAR_VERSION})
         set_property(TARGET SimGearScene PROPERTY SOVERSION ${SIMGEAR_SOVERSION})
-    
-        target_link_libraries(SimGearScene 
-            SimGearCore
-            ${ZLIB_LIBRARY} 
-            ${OPENSCENEGRAPH_LIBRARIES} 
-            ${OPENAL_LIBRARY} ${ALUT_LIBRARY}
-            ${OPENGL_LIBRARY})
-    
-        if(LIBSVN_FOUND)
-            target_link_libraries(SimGearScene ${LIBSVN_LIBRARIES})
-        endif(LIBSVN_FOUND)
-
-        install(TARGETS SimGearScene LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
     endif()
-   
+else()
+    message(STATUS "Library building mode: STATIC LIBRARIES")
+
+	get_property(FG_GROUPS_CORE_SOURCES_C GLOBAL PROPERTY FG_GROUPS_CORE_SOURCES_C)
+	string(REPLACE "@" ";" groups ${FG_GROUPS_CORE_SOURCES_C} )
+	foreach(g ${groups})
+		string(REPLACE "#" ";" g2 ${g})
+		list(GET g2 0 name)
+		list(REMOVE_AT g2 0)
+		source_group("${name}\\Sources" FILES ${g2})
+	endforeach()
+
+	get_property(FG_GROUPS_CORE_SOURCES_H GLOBAL PROPERTY FG_GROUPS_CORE_SOURCES_H)
+	string(REPLACE "@" ";" groups ${FG_GROUPS_CORE_SOURCES_H} )
+	foreach(g ${groups})
+		string(REPLACE "#" ";" g2 ${g})
+		list(GET g2 0 name)
+		list(REMOVE_AT g2 0)
+		source_group("${name}\\Headers" FILES ${g2})
+	endforeach()
+
+    add_library(SimGearCore STATIC ${coreSources} ${localExpatSources})
+
+    if(NOT SIMGEAR_HEADLESS)
+		get_property(FG_GROUPS_SCENE_SOURCES_C GLOBAL PROPERTY FG_GROUPS_SCENE_SOURCES_C)
+		string(REPLACE "@" ";" groups ${FG_GROUPS_SCENE_SOURCES_C} )
+		foreach(g ${groups})
+			string(REPLACE "#" ";" g2 ${g})
+			list(GET g2 0 name)
+			list(REMOVE_AT g2 0)
+			source_group("${name}\\Sources" FILES ${g2})
+		endforeach()
+
+		get_property(FG_GROUPS_SCENE_SOURCES_H GLOBAL PROPERTY FG_GROUPS_SCENE_SOURCES_H)
+		string(REPLACE "@" ";" groups ${FG_GROUPS_SCENE_SOURCES_H} )
+		foreach(g ${groups})
+			string(REPLACE "#" ";" g2 ${g})
+			list(GET g2 0 name)
+			list(REMOVE_AT g2 0)
+			source_group("${name}\\Headers" FILES ${g2})
+		endforeach()
+
+        add_library(SimGearScene STATIC ${sceneSources})
+    endif(NOT SIMGEAR_HEADLESS)
 endif(SIMGEAR_SHARED)
-    
+
+target_include_directories(SimGearCore BEFORE PUBLIC
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:include>)
+
+target_include_directories(SimGearCore PUBLIC
+  ${Boost_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIR})
+target_include_directories(SimGearCore PRIVATE
+  ${EXPAT_INCLUDE_DIRS} ${CURL_INCLUDE_DIRS})
+
+    install(TARGETS SimGearCore
+            EXPORT SimGearTargets
+            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+if (NOT SIMGEAR_HEADLESS)
+  install(TARGETS SimGearScene
+          EXPORT SimGearTargets
+          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+  target_include_directories(SimGearScene BEFORE PUBLIC
+      $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:include>)
+
+    target_include_directories(SimGearScene PUBLIC ${OPENSCENEGRAPH_INCLUDE_DIRS})
+
+    if (USE_AEONWAVE)
+      target_include_directories(SimGearScene PRIVATE ${AAX_INCLUDE_DIR} )
+    else()
+      target_include_directories(SimGearScene PRIVATE ${OPENAL_INCLUDE_DIR} )
+    endif()
+endif()
+
+
+target_link_libraries(SimGearCore
+    ${ZLIB_LIBRARY}
+    ${RT_LIBRARY}
+    ${DL_LIBRARY}
+    ${CMAKE_THREAD_LIBS_INIT}
+    ${COCOA_LIBRARY}
+    ${CURL_LIBRARIES}
+    ${WINSOCK_LIBRARY})
+
+if(SYSTEM_EXPAT)
+    target_link_libraries(SimGearCore
+        ${EXPAT_LIBRARIES})
+endif()
+
+if(ENABLE_DNS AND SYSTEM_UDNS)
+    target_link_libraries(SimGearCore
+        ${UDNS_LIBRARIES})
+endif()
+
+if(NOT SIMGEAR_HEADLESS)
+    target_include_directories(SimGearScene PRIVATE ${PROJECT_SOURCE_DIR}/simgear/canvas/ShivaVG/include)
+
+    target_link_libraries(SimGearScene
+        SimGearCore
+        ${ZLIB_LIBRARY}
+        ${OPENSCENEGRAPH_LIBRARIES}
+        ${OPENAL_LIBRARY}
+        ${OPENGL_LIBRARY}
+        ${JPEG_LIBRARY})
+
+    if(ENABLE_GDAL)
+        target_link_libraries(SimGearScene
+            ${GDAL_LIBRARIES})
+    endif()
+
+    # only actually needed by canvas/KeyboardEvent.cxx
+    target_include_directories(SimGearScene PRIVATE ${PROJECT_SOURCE_DIR}/3rdparty/utf8/source)
+endif()
+
+if(ENABLE_RTI)
+    # Ugly first aid to make hla compile agian
+    set_property(SOURCE hla/RTI13InteractionClass.cxx hla/RTI13ObjectClass.cxx
+        hla/RTI13ObjectInstance.cxx hla/RTI13Federate.cxx
+        hla/RTI13FederateFactory.cxx
+        APPEND PROPERTY COMPILE_FLAGS "-I${RTI_INCLUDE_DIR}")
+endif(ENABLE_RTI)

simgear/bucket/CMakeLists.txt

@@ -4,4 +4,13 @@ include (SimGearComponent)
 set(HEADERS newbucket.hxx)
 set(SOURCES newbucket.cxx)
 
-simgear_component(bucket bucket "${SOURCES}" "${HEADERS}")
+simgear_component(bucket bucket "${SOURCES}" "${HEADERS}")
+
+
+if(ENABLE_TESTS)
+
+add_executable(test_bucket test_bucket.cxx)
+add_test(test_bucket ${EXECUTABLE_OUTPUT_PATH}/test_bucket)
+target_link_libraries(test_bucket ${TEST_LIBS})
+
+endif(ENABLE_TESTS)

simgear/bucket/newbucket.cxx

@@ -27,36 +27,56 @@
 #  include <simgear_config.h>
 #endif
 
-#include <math.h>
+#include <cmath>
+#include <cstdio> // some platforms need this for ::snprintf
+#include <iostream>
 
 #include <simgear/misc/sg_path.hxx>
+#include <simgear/debug/logstream.hxx>
 
 #include "newbucket.hxx"
 
 
 // default constructor
-SGBucket::SGBucket() {
+SGBucket::SGBucket() :
+    lon(-1000),
+    lat(-1000),
+    x(0),
+    y(0)
+{
 }
 
+bool SGBucket::isValid() const
+{
+    // The most northerly valid latitude is 89, not 90. There is no tile
+    // whose *bottom* latitude is 90. Similar there is no tile whose left egde
+    // is 180 longitude.
+    return (lon >= -180) &&
+            (lon < 180) &&
+            (lat >= -90) &&
+            (lat < 90) &&
+            (x < 8) && (y < 8);
+}
+
+void SGBucket::make_bad()
+{
+    lon = -1000;
+    lat = -1000;
+}
+
+#ifndef NO_DEPRECATED_API
 
 // constructor for specified location
 SGBucket::SGBucket(const double dlon, const double dlat) {
     set_bucket(dlon, dlat);
 }
+#endif
 
 SGBucket::SGBucket(const SGGeod& geod) {
-    set_bucket(geod);
+    innerSet(geod.getLongitudeDeg(),
+             geod.getLatitudeDeg());
 }
 
-// create an impossible bucket if false
-SGBucket::SGBucket(const bool is_good) {
-    set_bucket(0.0, 0.0);
-    if ( !is_good ) {
-	lon = -1000;
-    }
-}
-
-
 // Parse a unique scenery tile index and find the lon, lat, x, and y
 SGBucket::SGBucket(const long int bindex) {
     long int index = bindex;
@@ -75,48 +95,59 @@ SGBucket::SGBucket(const long int bindex) {
     x = index;
 }
 
+/* Calculate the greatest integral value less than
+ * or equal to the given value (floor(x)),
+ * but attribute coordinates close to the boundary to the next
+ * (increasing) integral
+ */
+static int floorWithEpsilon(double x)
+{
+    return static_cast<int>(floor(x + SG_EPSILON));
+}
+
+#ifndef NO_DEPRECATED_API
+
+void SGBucket::set_bucket(double dlon, double dlat)
+{
+    innerSet(dlon, dlat);
+}
+
+
+void SGBucket::set_bucket(const SGGeod& geod)
+{
+    innerSet(geod.getLongitudeDeg(), geod.getLatitudeDeg());
+}
+
+#endif
 
 // Set the bucket params for the specified lat and lon
-void SGBucket::set_bucket( double *lonlat ) {
-    set_bucket( lonlat[0], lonlat[1] );
-}	
-
-
-// Set the bucket params for the specified lat and lon
-void SGBucket::set_bucket( double dlon, double dlat ) {
+void SGBucket::innerSet( double dlon, double dlat )
+{
+    if ((dlon < -180.0) || (dlon >= 180.0)) {
+        SG_LOG(SG_TERRAIN, SG_WARN, "SGBucket::set_bucket: passed longitude:" << dlon);
+        dlon = SGMiscd::normalizePeriodic(-180.0, 180.0, dlon);
+    }
+    
+    if ((dlat < -90.0) || (dlat > 90.0)) {
+        SG_LOG(SG_TERRAIN, SG_WARN, "SGBucket::set_bucket: passed latitude" << dlat);
+        dlat = SGMiscd::clip(dlat, -90.0, 90.0);
+    }
+    
     //
-    // latitude first
+    // longitude first
     //
     double span = sg_bucket_span( dlat );
-    double diff = dlon - (double)(int)dlon;
-
-    // cout << "diff = " << diff << "  span = " << span << endl;
-
-    /* Calculate the greatest integral longitude less than
-     * or equal to the given longitude (floor(dlon)),
-     * but attribute coordinates near the east border
-     * to the next tile.
-     */
-    if ( (dlon >= 0) || (fabs(diff) < SG_EPSILON) ) {
-	lon = (int)dlon;
-    } else {
-	lon = (int)dlon - 1;
-    }
-
+    // we do NOT need to special case lon=180 here, since
+    // normalizePeriodic will never return 180; it will
+    // return -180, which is what we want.
+    lon = floorWithEpsilon(dlon);
+    
     // find subdivision or super lon if needed
-    if ( span < SG_EPSILON ) {
-        /* sg_bucket_span() never returns 0.0
-         * or anything near it, so this really
-         * should not occur at any time.
-         */
-	// polar cap
-	lon = 0;
-	x = 0;
-    } else if ( span <= 1.0 ) {
+    if ( span <= 1.0 ) {
         /* We have more than one tile per degree of
          * longitude, so we need an x offset.
          */
-	x = (int)((dlon - lon) / span);
+        x = floorWithEpsilon((dlon - lon) / span);
     } else {
         /* We have one or more degrees per tile,
          * so we need to find the base longitude
@@ -129,48 +160,28 @@ void SGBucket::set_bucket( double dlon, double dlat ) {
          *
          * That way, the Greenwich Meridian is always
          * a tile border.
-         *
-         * This gets us into trouble with the polar caps,
-         * which have width 360 and thus either span
-         * the range from 0 to 360 or from -360 to 0
-         * degrees, depending on whether lon is positive
-         * or negative!
-         *
-         * We also get into trouble with the 8 degree tiles
-         * north of 88N and south of 88S, because the west-
-         * and east-most tiles in that range will cover 184W
-         * to 176W and 176E to 184E respectively, with their
-         * center at 180E/W!
          */
-        lon=(int)floor(floor((lon+SG_EPSILON)/span)*span);
-        /* Correct the polar cap issue */
-        if ( lon < -180 ) {
-            lon = -180;
-        }
-	x = 0;
+        lon=static_cast<int>(floor(lon / span) * span);
+        x = 0;
     }
 
     //
     // then latitude
     //
-    diff = dlat - (double)(int)dlat;
-
-    /* Again, a modified floor() function (see longitude) */
-    if ( (dlat >= 0) || (fabs(diff) < SG_EPSILON) ) {
-	lat = (int)dlat;
+    lat = floorWithEpsilon(dlat);
+    
+    // special case when passing in the north pole point (possibly due to
+    // clipping latitude above). Ensures we generate a valid bucket in this
+    // scenario
+    if (lat == 90) {
+        lat = 89;
+        y = 7;
     } else {
-	lat = (int)dlat - 1;
+        /* Latitude base and offset are easier, as
+         * tiles always are 1/8 degree of latitude wide.
+         */
+        y = floorWithEpsilon((dlat - lat) * 8);
     }
-    /* Latitude base and offset are easier, as
-     * tiles always are 1/8 degree of latitude wide.
-     */
-    y = (int)((dlat - lat) * 8);
-}
-
-
-void SGBucket::set_bucket(const SGGeod& geod)
-{
-    set_bucket(geod.getLongitudeDeg(), geod.getLatitudeDeg());
 }
 
 // Build the path name for this bucket
@@ -212,29 +223,16 @@ std::string SGBucket::gen_base_path() const {
 	main_lat *= -1;
     }
 
-    sprintf(raw_path, "%c%03d%c%02d/%c%03d%c%02d", 
+    ::snprintf(raw_path, 256, "%c%03d%c%02d/%c%03d%c%02d",
 	    hem, top_lon, pole, top_lat, 
 	    hem, main_lon, pole, main_lat);
 
-    SGPath path( raw_path );
-
-    return path.str();
+    return raw_path;
 }
 
 
 // return width of the tile in degrees
 double SGBucket::get_width() const {
-    if (lon==-180 && (lat==-89 || lat==88) ) {
-        /* Normally the tile at 180W in 88N and 89S
-         * would cover 184W to 176W and the next
-         * on the east side starts at 176W.
-         * To correct, make this a special tile
-         * from 180W to 176W with 4 degrees width
-         * instead of the normal 8 degrees at
-         * that latitude.
-         */
-         return 4.0;
-    }
     return sg_bucket_span( get_center_lat() );
 }
 
@@ -244,17 +242,32 @@ double SGBucket::get_height() const {
     return SG_BUCKET_SPAN;
 }
 
-
-// return width of the tile in meters
-double SGBucket::get_width_m() const {
-    double clat = (int)get_center_lat();
-    if ( clat > 0 ) {
-	clat = (int)clat + 0.5;
-    } else {
-	clat = (int)clat - 0.5;
+double SGBucket::get_highest_lat() const
+{
+    unsigned char adjustedY = y;
+    if (lat >= 0) {
+        // tile is north of the equator, so we want the top edge. Add one
+        // to y to achieve this.
+        ++adjustedY;
     }
-    double clat_rad = clat * SGD_DEGREES_TO_RADIANS;
+    
+	return lat + (adjustedY / 8.0);
+}
+
+
+// return width of the tile in meters. This function is used by the
+// tile-manager to estimate how many tiles are in the view distance, so
+// we care about the smallest width, which occurs at the highest latitude.
+double SGBucket::get_width_m() const
+{
+    double clat_rad = get_highest_lat() * SGD_DEGREES_TO_RADIANS;
     double cos_lat = cos( clat_rad );
+    if (fabs(cos_lat) < SG_EPSILON) {
+        // happens for polar tiles, since we pass in a latitude of 90
+        // return an arbitrary small value so all tiles are loaded
+        return 10.0;
+    }
+    
     double local_radius = cos_lat * SG_EQUATORIAL_RADIUS_M;
     double local_perimeter = local_radius * SGD_2PI;
     double degree_width = local_perimeter / 360.0;
@@ -271,7 +284,89 @@ double SGBucket::get_height_m() const {
     return SG_BUCKET_SPAN * degree_height;
 }
 
+unsigned int SGBucket::siblings( int dx, int dy, std::vector<SGBucket>& buckets ) const 
+{
+    if (!isValid()) {
+        SG_LOG(SG_TERRAIN, SG_WARN, "SGBucket::sibling: requesting sibling of invalid bucket");
+        return 0;
+    }
+    
+    double src_span = sg_bucket_span( get_center_lat() );
+   
+    double clat = get_center_lat() + dy * SG_BUCKET_SPAN;
+    // return invalid here instead of clipping, so callers can discard
+    // invalid buckets without having to check if it's an existing one
+    if ((clat < -90.0) || (clat > 90.0)) {
+        return 0;
+    }
+    
+    // find the lon span for the new latitude
+    double trg_span = sg_bucket_span( clat );
+    
+    // if target span < src_span, return multiple buckets...
+    if ( trg_span < src_span ) {
+        // calc center longitude of westernmost sibling
+        double start_lon = get_center_lat() - src_span/2 + trg_span/2;
+        
+        unsigned int num_buckets = src_span/trg_span;
+        for ( unsigned int x = 0; x < num_buckets; x++ ) {
+            double tmp = start_lon + x * trg_span;
+            tmp = SGMiscd::normalizePeriodic(-180.0, 180.0, tmp);
+            
+            SGBucket b;
+            b.innerSet(tmp, clat);
+            
+            buckets.push_back( b );
+        }
+    } else {
+        // just return the single sibling
+        double tmp = get_center_lon() + dx * trg_span;
+        tmp = SGMiscd::normalizePeriodic(-180.0, 180.0, tmp);
+    
+        SGBucket b;
+        b.innerSet(tmp, clat);
+        
+        buckets.push_back( b );
+    }
+    
+    return buckets.size();
+}
 
+SGBucket SGBucket::sibling(int dx, int dy) const
+{
+    if (!isValid()) {
+        SG_LOG(SG_TERRAIN, SG_WARN, "SGBucket::sibling: requesting sibling of invalid bucket");
+        return SGBucket();
+    }
+    
+    double clat = get_center_lat() + dy * SG_BUCKET_SPAN;
+    // return invalid here instead of clipping, so callers can discard
+    // invalid buckets without having to check if it's an existing one
+    if ((clat < -90.0) || (clat > 90.0)) {
+        return SGBucket();
+    }
+    
+    // find the lon span for the new latitude
+    double span = sg_bucket_span( clat );
+    
+    double tmp = get_center_lon() + dx * span;
+    tmp = SGMiscd::normalizePeriodic(-180.0, 180.0, tmp);
+    
+    SGBucket b;
+    b.innerSet(tmp, clat);
+    return b;
+}
+
+std::string SGBucket::gen_index_str() const
+{
+	char tmp[20];
+	::snprintf(tmp, 20, "%ld",
+                 (((long)lon + 180) << 14) + ((lat + 90) << 6)
+                 + (y << 3) + x);
+	return (std::string)tmp;
+}
+
+#ifndef NO_DEPRECATED_API
 // find the bucket which is offset by the specified tile units in the
 // X & Y direction.  We need the current lon and lat to resolve
 // ambiguities when going from a wider tile to a narrower one above or
@@ -298,7 +393,7 @@ SGBucket sgBucketOffset( double dlon, double dlat, int dx, int dy ) {
 
     return result;
 }
-
+#endif
 
 // calculate the offset between two buckets
 void sgBucketDiff( const SGBucket& b1, const SGBucket& b2, int *dx, int *dy ) {
@@ -356,4 +451,25 @@ void sgBucketDiff( const SGBucket& b1, const SGBucket& b2, int *dx, int *dy ) {
 #endif
 }
 
+void sgGetBuckets( const SGGeod& min, const SGGeod& max, std::vector<SGBucket>& list ) {
+    double lon, lat, span;
+
+    for (lat = min.getLatitudeDeg(); lat < max.getLatitudeDeg()+SG_BUCKET_SPAN; lat += SG_BUCKET_SPAN) {
+        span = sg_bucket_span( lat );
+        for (lon = min.getLongitudeDeg(); lon <= max.getLongitudeDeg(); lon += span)
+        {
+            SGBucket b(SGGeod::fromDeg(lon, lat));
+            if (!b.isValid()) {
+                continue;
+            }
+            
+            list.push_back(b);
+        }
+    }
+}
+
+std::ostream& operator<< ( std::ostream& out, const SGBucket& b )
+{
+    return out << b.lon << ":" << (int)b.x << ", " << b.lat << ":" << (int)b.y;
+}
 

simgear/bucket/newbucket.hxx

@@ -39,9 +39,11 @@
 #include <simgear/math/SGMath.hxx>
 
 #include <cmath>
-#include <cstdio> // sprintf()
-#include <ostream>
 #include <string>
+#include <iosfwd>
+#include <vector>
+
+// #define NO_DEPRECATED_API
 
 /**
  * standard size of a bucket in degrees (1/8 of a degree)
@@ -57,9 +59,7 @@
 // return the horizontal tile span factor based on latitude
 static double sg_bucket_span( double l ) {
     if ( l >= 89.0 ) {
-	return 360.0;
-    } else if ( l >= 88.0 ) {
-	return 8.0;
+	return 12.0;
     } else if ( l >= 86.0 ) {
 	return 4.0;
     } else if ( l >= 83.0 ) {
@@ -80,12 +80,10 @@ static double sg_bucket_span( double l ) {
 	return 1.0;
     } else if ( l >= -86.0 ) {
 	return 2.0;
-    } else if ( l >= -88.0 ) {
-	return 4.0;
     } else if ( l >= -89.0 ) {
-	return 8.0;
+	return 4.0;
     } else {
-	return 360.0;
+	return 12.0;
     }
 }
 
@@ -102,75 +100,69 @@ class SGBucket {
 private:
     short lon;        // longitude index (-180 to 179)
     short lat;        // latitude index (-90 to 89)
-    char x;          // x subdivision (0 to 7)
-    char y;          // y subdivision (0 to 7)
+    unsigned char x;          // x subdivision (0 to 7)
+    unsigned char y;          // y subdivision (0 to 7)
 
+    void innerSet( double dlon, double dlat );
 public:
 
     /**
-     * Default constructor.
+     * Default constructor, creates an invalid SGBucket
      */
     SGBucket();
 
+    /**
+     * Check if this bucket refers to a valid tile, or not.
+     */
+    bool isValid() const;
+    
+#ifndef NO_DEPRECATED_API
     /**
      * Construct a bucket given a specific location.
      * @param dlon longitude specified in degrees
      * @param dlat latitude specified in degrees
      */
     SGBucket(const double dlon, const double dlat);
-
+#endif
+    
     /**
      * Construct a bucket given a specific location.
-     * @param dlon longitude specified in degrees
-     * @param dlat latitude specified in degrees
+     *
+     * @param geod Geodetic location
      */
     SGBucket(const SGGeod& geod);
 
-    /** Construct a bucket.
-     *  @param is_good if false, create an invalid bucket.  This is
-     *  useful * if you are comparing cur_bucket to last_bucket and
-     *  you want to * make sure last_bucket starts out as something
-     *  impossible.
-     */
-    SGBucket(const bool is_good);
-
     /** Construct a bucket given a unique bucket index number.
+     *
      * @param bindex unique bucket index
      */
     SGBucket(const long int bindex);
 
+#ifndef NO_DEPRECATED_API
+    /**
+     * Reset a bucket to represent a new location.
+     *
+     * @param geod New geodetic location
+     */
+    void set_bucket(const SGGeod& geod);
+
+
     /**
      * Reset a bucket to represent a new lat and lon
      * @param dlon longitude specified in degrees
      * @param dlat latitude specified in degrees
      */
     void set_bucket( double dlon, double dlat );
-
-    /**
-     * Reset a bucket to represent a new lat and lon
-     * @param lonlat an array of double[2] holding lon and lat
-     * (specified) in degrees
-     */
-    void set_bucket( double *lonlat );
-
-    /**
-     * Reset a bucket to represent a new lat and lon
-     * @param dlon longitude specified in degrees
-     * @param dlat latitude specified in degrees
-     */
-    void set_bucket(const SGGeod& geod);
-
+#endif
+    
     /**
      * Create an impossible bucket.
      * This is useful if you are comparing cur_bucket to last_bucket
      * and you want to make sure last_bucket starts out as something
      * impossible.
      */
-    inline void make_bad() {
-	set_bucket(0.0, 0.0);
-	lon = -1000;
-    }
-
+    void make_bad();
+    
     /**
      * Generate the unique scenery tile index for this bucket
      *
@@ -195,14 +187,8 @@ public:
      * string form.
      * @return tile index in string form
      */
-    inline std::string gen_index_str() const {
-	char tmp[20];
-	std::sprintf(tmp, "%ld", 
-                     (((long)lon + 180) << 14) + ((lat + 90) << 6)
-                     + (y << 3) + x);
-	return (std::string)tmp;
-    }
-
+    std::string gen_index_str() const;
+    
     /**
      * Build the base path name for this bucket.
      * @return base path in string form
@@ -229,6 +215,13 @@ public:
 	return lat + y / 8.0 + SG_HALF_BUCKET_SPAN;
     }
 
+    /**
+     * @return the highest (furthest from the equator) latitude of this
+     * tile. This is the top edge for tiles north of the equator, and
+     * the bottom edge for tiles south
+     */
+    double get_highest_lat() const;
+    
     /**
      * @return the width of the tile in degrees.
      */
@@ -290,6 +283,16 @@ public:
      */
     inline int get_y() const { return y; }
 
+    /**
+     * @return bucket offset from this by dx,dy
+     */
+    SGBucket sibling(int dx, int dy) const;
+    
+    /**
+     * @return multiple buckets offset from this by dx,dy
+     */
+    unsigned int siblings(int dz, int dy, std::vector<SGBucket>& buckets) const;
+    
     // friends
 
     friend std::ostream& operator<< ( std::ostream&, const SGBucket& );
@@ -301,7 +304,7 @@ inline bool operator!= (const SGBucket& lhs, const SGBucket& rhs)
         return !(lhs == rhs);
     }
 
-
+#ifndef NO_DEPRECATED_API
 /**
  * \relates SGBucket
  * Return the bucket which is offset from the specified dlon, dlat by
@@ -313,6 +316,7 @@ inline bool operator!= (const SGBucket& lhs, const SGBucket& rhs)
  * @return offset bucket
  */
 SGBucket sgBucketOffset( double dlon, double dlat, int x, int y );
+#endif
 
 
 /**
@@ -326,17 +330,21 @@ SGBucket sgBucketOffset( double dlon, double dlat, int x, int y );
 void sgBucketDiff( const SGBucket& b1, const SGBucket& b2, int *dx, int *dy );
 
 
+/**
+ * \relates SGBucket
+ * retrieve a list of buckets in the given bounding box
+ * @param min min lon,lat of bounding box in degrees
+ * @param max max lon,lat of bounding box in degrees
+ * @param list standard vector of buckets within the bounding box
+ */
+void sgGetBuckets( const SGGeod& min, const SGGeod& max, std::vector<SGBucket>& list );
+
 /**
  * Write the bucket lon, lat, x, and y to the output stream.
  * @param out output stream
  * @param b bucket
  */
-inline std::ostream&
-operator<< ( std::ostream& out, const SGBucket& b )
-{
-    return out << b.lon << ":" << (int)b.x << ", " << b.lat << ":" << (int)b.y;
-}
-
+std::ostream& operator<< ( std::ostream& out, const SGBucket& b );
 
 /**
  * Compare two bucket structures for equality.

simgear/bucket/test_bucket.cxx

@@ -0,0 +1,362 @@
+/**************************************************************************
+ * test_bucket.cxx -- unit-tests for SGBucket class
+ *
+ * Copyright (C) 2014  James Turner - <zakalawe@mac.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * $Id$
+ **************************************************************************/
+
+#include <simgear/compiler.h>
+
+#include <iostream>
+#include <cstdlib>
+#include <cstring>
+
+using std::cout;
+using std::cerr;
+using std::endl;
+
+#include <simgear/bucket/newbucket.hxx>
+#include <simgear/misc/test_macros.hxx>
+
+void testBucketSpans()
+{
+    SG_CHECK_EQUAL(sg_bucket_span(0.0), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-20), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-40), 0.25);
+    SG_CHECK_EQUAL(sg_bucket_span(89.9), 12.0);
+    SG_CHECK_EQUAL(sg_bucket_span(88.1), 4.0);
+    SG_CHECK_EQUAL(sg_bucket_span(-89.9), 12.0);
+}
+
+void testBasic()
+{
+    SGBucket b1(5.1, 55.05);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 5);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 55);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 0);
+    SG_CHECK_EQUAL(b1.gen_index(), 3040320);
+    SG_CHECK_EQUAL(b1.gen_base_path(), "e000n50/e005n55");
+    SG_VERIFY(b1.isValid());
+
+    SGBucket b2(-10.1, -43.8);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -11);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -44);
+    SG_CHECK_EQUAL(b2.get_x(), 3);
+    // Latitude chunks numbered bottom to top, it seems
+    SG_CHECK_EQUAL(b2.get_y(), 1);
+    SG_CHECK_EQUAL(b2.gen_base_path(), "w020s50/w011s44");
+    SG_VERIFY(b2.isValid());
+
+    SGBucket b3(123.48, 9.01);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 123);
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 9);
+    SG_CHECK_EQUAL(b3.get_x(), 3);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
+    SG_CHECK_EQUAL(b3.gen_base_path(), "e120n00/e123n09");
+    SG_VERIFY(b3.isValid());
+
+    SGBucket defBuck;
+    SG_VERIFY(!defBuck.isValid());
+
+    b3.make_bad();
+    SG_VERIFY(!b3.isValid());
+
+    SGBucket atAntiMeridian(180.0, 12.3);
+    SG_VERIFY(atAntiMeridian.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian.get_x(), 0);
+
+    SGBucket atAntiMeridian2(-180.0, -78.1);
+    SG_VERIFY(atAntiMeridian2.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian2.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian2.get_x(), 0);
+
+    // check comparison operator overload
+    SGBucket b4(5.11, 55.1);
+    SG_VERIFY(b1 == b4); // should be equal
+    SG_VERIFY(b1 == b1);
+    SG_VERIFY(b1 != defBuck);
+    SG_VERIFY(b1 != b2);
+
+    // check wrapping/clipping of inputs
+    SGBucket wrapMeridian(-200.0, 45.0);
+    SG_CHECK_EQUAL(wrapMeridian.get_chunk_lon(), 160);
+
+    SGBucket clipPole(48.9, 91);
+    SG_CHECK_EQUAL(clipPole.get_chunk_lat(), 89);
+
+    // test override of a bucket's geod
+    auto geod = SGGeod::fromDegFt(-86.678, 36.1248, 599.0);
+#ifndef NO_DEPRECATED_API
+    SGBucket bna_airport;
+    bna_airport.set_bucket(geod);
+#else
+    SGBucket bna_airport(geod);
+#endif
+    SG_VERIFY(bna_airport.isValid());
+    SG_CHECK_EQUAL(bna_airport.get_chunk_lon(), -87);           // left origin of the 1-degree chunk
+    SG_CHECK_EQUAL(bna_airport.get_chunk_lat(), 36);            // bottom origin of the 1-degree chunk
+    SG_CHECK_EQUAL(bna_airport.get_x(), 1);                     // buckets are 0.25 deg wide at the W87 parallel
+                                                                //   we're 0.322 deg from the origin (second bucket)
+    SG_CHECK_EQUAL(bna_airport.get_y(), 0);                     // buckets are always 0.125 deg tall
+                                                                //   we're 0.1248 deg from the origin (first bucket)
+    SG_CHECK_EQUAL(bna_airport.gen_base_path(), "w090n30/w087n36");
+    SG_CHECK_EQUAL_EP2(bna_airport.get_width_m(), 22479.1, 0.1);
+    SG_CHECK_EQUAL_EP2(bna_airport.get_height_m(), 13914.9, 0.1);
+    SG_CHECK_EQUAL(bna_airport.gen_index_str(), "1531777");     // 0x175F81 = b01011101|01111110|000|001
+                                                                //          =   93-180 | 126-90 | 0 | 1
+                                                                //          =      -87 |     36 | 0 | 1
+
+    // test stream output
+    cout << "[TEST] BNA Airport: " << bna_airport << endl;
+    auto center = bna_airport.get_center();
+    cout << "[TEST] BNA lon: " << center.getLongitudeDeg() << endl;
+    cout << "[TEST] BNA lat: " << center.getLatitudeDeg() << endl;
+}
+
+void testPolar()
+{
+    SGBucket b1(0.0, 89.92);
+    SGBucket b2(10.0, 89.96);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
+
+    SG_CHECK_EQUAL_EP(b1.get_highest_lat(), 90.0);
+    SG_CHECK_EQUAL_EP(b1.get_width_m(), 10.0);
+
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 7);
+
+    SG_CHECK_EQUAL(b1.gen_index(), b2.gen_index());
+
+    SGGeod actualNorthPole1 = b1.get_corner(2);
+    SGGeod actualNorthPole2 = b1.get_corner(3);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
+
+    SGBucket b3(-2, 89.88);
+    SGBucket b4(-7, 89.88);
+    SG_CHECK_EQUAL(b3.gen_index(), b4.gen_index());
+
+    // south pole
+    SGBucket b5(-170, -89.88);
+    SGBucket b6(-179, -89.88);
+
+    SG_CHECK_EQUAL(b5.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b5.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b5.get_x(), 0);
+    SG_CHECK_EQUAL(b5.get_y(), 0);
+    SG_CHECK_EQUAL(b5.gen_index(), b6.gen_index());
+    SG_CHECK_EQUAL_EP(b5.get_highest_lat(), -90.0);
+    SG_CHECK_EQUAL_EP(b5.get_width_m(), 10.0);
+
+    SGGeod actualSouthPole1 = b5.get_corner(0);
+    SGGeod actualSouthPole2 = b5.get_corner(1);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLongitudeDeg(), -180);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLongitudeDeg(), -168);
+
+    SGBucket b7(200, 89.88);
+    SG_CHECK_EQUAL(b7.get_chunk_lon(), -168);
+}
+
+// test the tiles just below the pole (between 86 & 89 degrees N/S)
+void testNearPolar()
+{
+    SGBucket b1(1, 88.5);
+    SGBucket b2(-1, 88.8);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 88);
+    SG_VERIFY(b1.gen_index() != b2.gen_index());
+
+    SGBucket b3(176.1, 88.5);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 176);
+
+    SGBucket b4(-178, 88.5);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), -180);
+}
+
+void testOffset()
+{
+    // bucket just below the 22 degree cutoff, so the next tile north
+    // is twice the width
+    SGBucket b1(-59.8, 21.9);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 21);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
+
+    // offset vertically
+    SGBucket b2(b1.sibling(0, 1));
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 0);
+
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-59.8, 21.9, 0, 1));
+
+    // offset vertically and horizontally. We compute horizontal (x)
+    // movement at the target latitude, so this should move 0.25 * -3 degrees,
+    // NOT 0.125 * -3 degrees.
+    SGBucket b3(b1.sibling(-3, 1));
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), -61);
+    SG_CHECK_EQUAL(b3.get_x(), 1);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
+
+    SG_CHECK_EQUAL(b3.gen_index(), sgBucketOffset(-59.8, 21.9, -3, 1));
+}
+
+void testPolarOffset()
+{
+    SGBucket b1(-11.7, -89.6);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -12);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 3);
+
+    // offset horizontally
+    SGBucket b2(b1.sibling(-2, 0));
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -36);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 3);
+
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
+
+    // offset and wrap
+    SGBucket b3(-170, 89.1);
+    SGBucket b4(b3.sibling(-1, 0));
+    SG_CHECK_EQUAL(b4.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), 168);
+    SG_CHECK_EQUAL(b4.get_x(), 0);
+    SG_CHECK_EQUAL(b4.get_y(), 0);
+
+    SG_CHECK_EQUAL(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
+
+
+    SGBucket b5(177, 87.3);
+    SGBucket b6(b5.sibling(1, 1));
+    SG_CHECK_EQUAL(b6.get_chunk_lat(), 87);
+    SG_CHECK_EQUAL(b6.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b6.get_x(), 0);
+    SG_CHECK_EQUAL(b6.get_y(), 3);
+
+    SG_CHECK_EQUAL(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
+
+    // offset vertically towards the pole
+    SGBucket b7(b1.sibling(0, -5));
+    SG_VERIFY(!b7.isValid());
+
+    SG_VERIFY(!SGBucket(0, 90).sibling(0, 1).isValid());
+}
+
+// test behaviour of bucket-offset near the anti-meridian (180-meridian)
+void testOffsetWrap()
+{
+    // near the equator
+    SGBucket b1(-179.8, 16.8);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 6);
+
+    SGBucket b2(b1.sibling(-2, 0));
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 179);
+    SG_CHECK_EQUAL(b2.get_x(), 7);
+    SG_CHECK_EQUAL(b2.get_y(), 6);
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-179.8, 16.8, -2, 0));
+}
+
+void testSiblings()
+{
+    SGBucket bna_airport(-86.678, 36.1248);
+    SG_VERIFY(bna_airport.isValid());
+
+    // retrieve the sibling two positions north-east of my position
+    auto sib1 = bna_airport.sibling(2, 2);
+    SG_CHECK_EQUAL(sib1.get_chunk_lon(), bna_airport.get_chunk_lon());
+    SG_CHECK_EQUAL(sib1.get_chunk_lat(), bna_airport.get_chunk_lat());
+    SG_CHECK_EQUAL(sib1.get_x(), 3);        // my x-pos (1) + 2 = 3
+    SG_CHECK_EQUAL(sib1.get_y(), 2);        // my y-pos (0) + 2 = 2
+    SG_CHECK_EQUAL(sib1.gen_base_path(), bna_airport.gen_base_path());
+
+    // retrieve the one sibling two positions to the north-east
+    std::vector<SGBucket> siblings;
+    bna_airport.siblings(2, 2, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(1));
+    siblings.clear();
+
+    // retrieve the one sibling at the chunk origin of sib1
+    sib1.siblings(-2, -2, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(1));
+    siblings.clear();
+
+    // calculate delta between two buckets
+    int dx = 0;
+    int dy = 0;
+    sgBucketDiff(bna_airport, sib1, &dx, &dy);
+    SG_CHECK_EQUAL(dx, 2);
+    SG_CHECK_EQUAL(dy, 2);
+
+    // retrieve all siblings between two geodetic locations
+    auto geod_bna = SGGeod::fromDegFt(-86.678, 36.1248, 599.0);
+    auto geod_m54 = SGGeod::fromDegFt(-86.317, 36.1908, 122.0);
+    sgGetBuckets(geod_bna, geod_m54, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(4));
+    siblings.clear();
+
+    // edge cases
+
+    // ensure you cannot retrieve the sibling of an invalid bucket
+    SGBucket bad;
+    auto bad_sib = bad.sibling(1, 1);
+    SG_CHECK_EQUAL(bad_sib.get_chunk_lon(), -1000);
+    SG_CHECK_EQUAL(bad.siblings(2, 2, siblings), 0);
+
+    // if we drop below the 22nd parallel, the bucket widths are half the size
+    // expect this to retrieve two buckets
+    bna_airport.siblings(0, -160, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(2));
+    siblings.clear();
+}
+
+int main(int argc, char* argv[])
+{
+    testBucketSpans();
+
+    testBasic();
+    testPolar();
+    testNearPolar();
+    testOffset();
+    testOffsetWrap();
+    testPolarOffset();
+    testSiblings();
+
+    cout << "all tests passed OK" << endl;
+    return 0; // passed
+}

simgear/bvh/BVHBoundingBoxVisitor.hxx

@@ -23,6 +23,7 @@
 #include "BVHVisitor.hxx"
 #include "BVHNode.hxx"
 #include "BVHGroup.hxx"
+#include "BVHPageNode.hxx"
 #include "BVHTransform.hxx"
 #include "BVHMotionTransform.hxx"
 #include "BVHLineGeometry.hxx"
@@ -45,6 +46,8 @@ public:
     
     virtual void apply(BVHGroup& node)
     { expandBy(node.getBoundingSphere()); }
+    virtual void apply(BVHPageNode& node)
+    { expandBy(node.getBoundingSphere()); }
     virtual void apply(BVHTransform& node)
     { expandBy(node.getBoundingSphere()); }
     virtual void apply(BVHMotionTransform& node)