first commit
This commit is contained in:
+761
@@ -0,0 +1,761 @@
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/*
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* Miniphone: A simple, command line telephone
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*
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* IAX Support for talking to Asterisk and other Gnophone clients
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*
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* Copyright (C) 1999, Linux Support Services, Inc.
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*
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* Mark Spencer <markster@linux-support.net>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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/* #define PRINTCHUCK /* enable this to indicate chucked incomming packets */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <io.h>
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#include <conio.h>
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#include <stdio.h>
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#include <errno.h>
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#include <time.h>
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#include <process.h>
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#include <windows.h>
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#include <winsock.h>
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#include <mmsystem.h>
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#include <malloc.h>
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#include "gsm.h"
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#include "iax-client.h"
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#include "frame.h"
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#include "miniphone.h"
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struct peer {
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int time;
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gsm gsmin;
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gsm gsmout;
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struct iax_session *session;
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struct peer *next;
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};
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static struct peer *peers;
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static int answered_call = 0;
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/* stuff for wave audio device */
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HWAVEOUT wout;
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HWAVEIN win;
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typedef struct whout {
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WAVEHDR w;
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short data[160];
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struct whout *next;
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} WHOUT;
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WHOUT *outqueue = NULL;
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/* parameters for audio in */
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#define NWHIN 8 /* number of input buffer entries */
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/* NOTE the OUT_INTERVAL parameter *SHOULD* be more around 18 to 20 or so, since the packets should
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be spaced by 20 milliseconds. However, in practice, especially in Windoze-95, setting it that high
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caused underruns. 10 is just ever so slightly agressive, and the receiver has to chuck a packet
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every now and then. Thats about the way it should be to be happy. */
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#define OUT_INTERVAL 10 /* number of ms to wait before sending more data to peer */
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/* parameters for audio out */
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#define OUT_DEPTH 12 /* number of outbut buffer entries */
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#define OUT_PAUSE_THRESHOLD 2 /* number of active entries needed to start output (for smoothing) */
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/* audio input buffer headers */
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WAVEHDR whin[NWHIN];
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/* audio input buffers */
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char bufin[NWHIN][320];
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/* initialize the sequence variables for the audio in stuff */
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unsigned int whinserial = 1,nextwhin = 1;
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static struct peer *find_peer(struct iax_session *);
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static void parse_args(FILE *, unsigned char *);
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void do_iax_event(FILE *);
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void call(FILE *, char *);
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void answer_call(void);
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void reject_call(void);
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static void handle_event(FILE *, struct iax_event *e, struct peer *p);
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void parse_cmd(FILE *, int, char **);
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void issue_prompt(FILE *);
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void dump_array(FILE *, char **);
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static char *help[] = {
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"Welcome to the miniphone telephony client, the commands are as follows:\n",
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"Help\t\t-\tDisplays this screen.",
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"Call <Number>\t-\tDials the number supplied.",
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"Answer\t\t-\tAnswers an Inbound call.",
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"Reject\t\t-\tRejects an Inbound call.",
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"Dump\t\t-\tDumps (disconnects) the current call.",
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"Dtmf <Digit>\t-\tSends specified DTMF digit.",
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"Status\t\t-\tLists the current sessions and their current status.",
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"Quit\t\t-\tShuts down the client.",
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"",
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0
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};
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static struct peer *most_recent_answer;
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static struct iax_session *newcall = 0;
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/* holder of the time, relative to startup in system ticks. See our
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gettimeofday() implementation */
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time_t startuptime;
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/* routine called at exit to shutdown audio I/O and close nicely.
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NOTE: If all this isnt done, the system doesnt not handle this
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cleanly and has to be rebooted. What a pile of doo doo!! */
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void killem(void)
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{
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waveInStop(win);
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waveInReset(win);
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waveInClose(win);
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waveOutReset(wout);
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waveOutClose(wout);
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WSACleanup(); /* dont forget socket stuff too */
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return;
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}
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/* Win-doze doenst have gettimeofday(). This sux. So, what we did is
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provide some gettimeofday-like functionality that works for our purposes.
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In the main(), we take a sample of the system tick counter (into startuptime).
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This function returns the relative time since program startup, more or less,
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which is certainly good enough for our purposes. */
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void gettimeofday(struct timeval *tv, struct timezone *tz)
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{
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long l = startuptime + GetTickCount();
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tv->tv_sec = l / 1000;
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tv->tv_usec = (l % 1000) * 1000;
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return;
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}
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static struct peer *find_peer(struct iax_session *session)
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{
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struct peer *cur = peers;
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while(cur) {
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if (cur->session == session)
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return cur;
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cur = cur->next;
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}
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return NULL;
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}
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void
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parse_args(FILE *f, unsigned char *cmd)
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{
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static char *argv[MAXARGS];
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unsigned char *parse = cmd;
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int argc = 0, t = 0;
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// Don't mess with anything that doesn't exist...
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if(!*parse)
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return;
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memset(argv, 0, sizeof(argv));
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while(*parse) {
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if(*parse < 33 || *parse > 128) {
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*parse = 0, t++;
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if(t > MAXARG) {
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fprintf(f, "Warning: Argument exceeds maximum argument size, command ignored!\n");
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return;
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}
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} else if(t || !argc) {
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if(argc == MAXARGS) {
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fprintf(f, "Warning: Command ignored, too many arguments\n");
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return;
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}
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argv[argc++] = parse;
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t = 0;
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}
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parse++;
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}
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if(argc)
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parse_cmd(f, argc, argv);
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}
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/* handle all network requests, and a pending scheduled event, if any */
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void service_network(int netfd, FILE *f)
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{
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fd_set readfd;
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struct timeval dumbtimer;
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/* set up a timer that falls-through */
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dumbtimer.tv_sec = 0;
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dumbtimer.tv_usec = 0;
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for(;;) /* suck everything outa network stuff */
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{
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FD_ZERO(&readfd);
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FD_SET(netfd, &readfd);
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if (select(netfd + 1, &readfd, 0, 0, &dumbtimer) > 0)
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{
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if (FD_ISSET(netfd,&readfd))
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{
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do_iax_event(f);
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(void) iax_time_to_next_event();
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} else break;
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} else break;
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}
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do_iax_event(f); /* do pending event if any */
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}
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int
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main(int argc, char *argv[])
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{
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int port;
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int netfd;
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int c, i;
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FILE *f;
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char rcmd[RBUFSIZE];
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gsm_frame fo;
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WSADATA foop;
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time_t t;
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WAVEFORMATEX wf;
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WHOUT *wh,*wh1,*wh2;
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unsigned long lastouttick = 0;
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/* get time of day in milliseconds, offset by tick count (see our
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gettimeofday() implementation) */
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time(&t);
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startuptime = ((t % 86400) * 1000) - GetTickCount();
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f = stdout;
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_dup2(fileno(stdout),fileno(stderr));
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/* start up the windoze-socket layer stuff */
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if (WSAStartup(0x0101,&foop)) {
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fprintf(stderr,"Fatal error: Falied to startup windows sockets\n");
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return -1;
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}
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/* setup the format for opening audio channels */
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wf.wFormatTag = WAVE_FORMAT_PCM;
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wf.nChannels = 1;
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wf.nSamplesPerSec = 8000;
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wf.nAvgBytesPerSec = 16000;
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wf.nBlockAlign = 2;
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wf.wBitsPerSample = 16;
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wf.cbSize = 0;
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/* open the audio out channel */
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if (waveOutOpen(&wout,0,&wf,0,0,CALLBACK_NULL) != MMSYSERR_NOERROR)
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{
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fprintf(stderr,"Fatal Error: Failed to open wave output device\n");
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return -1;
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}
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/* open the audio in channel */
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if (waveInOpen(&win,0,&wf,0,0,CALLBACK_NULL) != MMSYSERR_NOERROR)
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{
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fprintf(stderr,"Fatal Error: Failed to open wave input device\n");
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waveOutReset(wout);
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waveOutClose(wout);
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return -1;
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}
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/* activate the exit handler */
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atexit(killem);
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/* initialize the audio in buffer structures */
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memset(&whin,0,sizeof(whin));
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if ( (port = iax_init(0) < 0)) {
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fprintf(stderr, "Fatal error: failed to initialize iax with port %d\n", port);
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return -1;
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}
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iax_set_formats(AST_FORMAT_GSM);
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netfd = iax_get_fd();
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fprintf(f, "Text Based Telephony Client.\n\n");
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issue_prompt(f);
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/* main tight loop */
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while(1) {
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/* service the network stuff */
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service_network(netfd,f);
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if (outqueue) /* if stuff in audio output queue, free it up if its available */
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{
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/* go through audio output queue */
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for(wh = outqueue,wh1 = wh2 = NULL,i = 0; wh != NULL; wh = wh->next)
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{
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service_network(netfd,f); /* service network here for better performance */
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/* if last one was removed from queue, zot it here */
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if (i && wh1)
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{
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free(wh1);
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wh1 = wh2;
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}
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i = 0; /* reset "last one removed" flag */
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if (wh->w.dwFlags & WHDR_DONE) /* if this one is done */
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{
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/* prepare audio header */
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if ((c = waveOutUnprepareHeader(wout,&wh->w,sizeof(WAVEHDR))) != MMSYSERR_NOERROR)
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{
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fprintf(stderr,"Cannot unprepare audio out header, error %d\n",c);
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exit(255);
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}
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if (wh1 != NULL) /* if there was a last one */
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{
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wh1->next = wh->next;
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}
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if (outqueue == wh) /* is first one, so set outqueue to next one */
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{
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outqueue = wh->next;
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}
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i = 1; /* set 'to free' flag */
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}
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wh2 = wh1; /* save old,old wh pointer */
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wh1 = wh; /* save the old wh pointer */
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}
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}
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/* go through all audio in buffers, and prepare and queue ones that are currently idle */
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for(i = 0; i < NWHIN; i++)
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{
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service_network(netfd,f); /* service network stuff here for better performance */
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if (!(whin[i].dwFlags & WHDR_PREPARED)) /* if not prepared, do so */
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{
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/* setup this input buffer header */
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memset(&whin[i],0,sizeof(WAVEHDR));
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whin[i].lpData = bufin[i];
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whin[i].dwBufferLength = 320;
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whin[i].dwUser = whinserial++; /* set 'user data' to current serial number */
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/* prepare the buffer */
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if (waveInPrepareHeader(win,&whin[i],sizeof(WAVEHDR)))
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{
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fprintf(stderr,"Unable to prepare header for input\n");
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return -1;
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}
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/* add it to device (queue) */
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if (waveInAddBuffer(win,&whin[i],sizeof(WAVEHDR)))
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{
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fprintf(stderr,"Unable to prepare header for input\n");
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return -1;
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}
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}
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waveInStart(win); /* start it (if not already started) */
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}
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/* if key pressed, do command stuff */
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if(_kbhit())
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{
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if ( ( fgets(&*rcmd, 256, stdin))) {
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rcmd[strlen(rcmd)-1] = 0;
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parse_args(f, &*rcmd);
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} else fprintf(f, "Fatal error: failed to read data!\n");
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issue_prompt(f);
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}
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/* do audio input stuff for buffers that have received data from audio in device already. Must
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do them in serial number order (the order in which they were originally queued). */
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if(answered_call) /* send audio only if call answered */
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{
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for(;;) /* loop until all are found */
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{
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for(i = 0; i < NWHIN; i++) /* find an available one that's the one we are looking for */
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{
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service_network(netfd,f); /* service network here for better performance */
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/* if not time to send any more, dont */
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if (GetTickCount() < (lastouttick + OUT_INTERVAL))
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{
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i = NWHIN; /* set to value that WILL exit loop */
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break;
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}
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if ((whin[i].dwUser == nextwhin) && (whin[i].dwFlags & WHDR_DONE)) { /* if audio is ready */
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/* must have read exactly 320 bytes */
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if (whin[i].dwBytesRecorded != whin[i].dwBufferLength)
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{
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fprintf(stderr,"Short audio read, got %d bytes, expected %d bytes\n", whin[i].dwBytesRecorded,
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whin[i].dwBufferLength);
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return -1;
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}
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if(!most_recent_answer->gsmout)
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most_recent_answer->gsmout = gsm_create();
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service_network(netfd,f); /* service network here for better performance */
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/* encode the audio from the buffer into GSM format */
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gsm_encode(most_recent_answer->gsmout, (short *) ((char *) whin[i].lpData), fo);
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if(iax_send_voice(most_recent_answer->session,
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AST_FORMAT_GSM, (char *)fo, sizeof(gsm_frame)) == -1)
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puts("Failed to send voice!");
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lastouttick = GetTickCount(); /* save time of last output */
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/* unprepare (free) the header */
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waveInUnprepareHeader(win,&whin[i],sizeof(WAVEHDR));
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/* initialize the buffer */
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memset(&whin[i],0,sizeof(WAVEHDR));
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/* bump the serial number to look for the next time */
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nextwhin++;
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/* exit the loop so that we can start at lowest buffer again */
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break;
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}
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}
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if (i >= NWHIN) break; /* if all found, get out of loop */
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}
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}
|
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|
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}
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return 0;
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}
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void
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do_iax_event(FILE *f) {
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int sessions = 0;
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struct iax_event *e = 0;
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struct peer *peer;
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|
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while ( (e = iax_get_event(0))) {
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peer = find_peer(e->session);
|
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if(peer) {
|
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handle_event(f, e, peer);
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} else {
|
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if(e->etype != IAX_EVENT_CONNECT) {
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fprintf(stderr, "Huh? This is an event for a non-existant session?\n");
|
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}
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sessions++;
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|
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if(sessions >= MAX_SESSIONS) {
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fprintf(f, "Missed a call... too many sessions open.\n");
|
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}
|
||||
|
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if(e->event.connect.callerid && e->event.connect.dnid)
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fprintf(f, "Call from '%s' for '%s'", e->event.connect.callerid,
|
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e->event.connect.dnid);
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else if(e->event.connect.dnid) {
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fprintf(f, "Call from '%s'", e->event.connect.dnid);
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} else if(e->event.connect.callerid) {
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fprintf(f, "Call from '%s'", e->event.connect.callerid);
|
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} else printf("Call from");
|
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fprintf(f, " (%s)\n", inet_ntoa(iax_get_peer_addr(e->session).sin_addr));
|
||||
|
||||
if(most_recent_answer) {
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fprintf(f, "Incoming call ignored, there's already a call waiting for answer... \
|
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please accept or reject first\n");
|
||||
iax_reject(e->session, "Too many calls, we're busy!");
|
||||
} else {
|
||||
if ( !(peer = malloc(sizeof(struct peer)))) {
|
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fprintf(f, "Warning: Unable to allocate memory!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
peer->time = time(0);
|
||||
peer->session = e->session;
|
||||
peer->gsmin = 0;
|
||||
peer->gsmout = 0;
|
||||
|
||||
peer->next = peers;
|
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peers = peer;
|
||||
|
||||
iax_accept(peer->session);
|
||||
iax_ring_announce(peer->session);
|
||||
most_recent_answer = peer;
|
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fprintf(f, "Incoming call!\n");
|
||||
}
|
||||
iax_event_free(e);
|
||||
issue_prompt(f);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
call(FILE *f, char *num)
|
||||
{
|
||||
struct peer *peer;
|
||||
|
||||
if(!newcall)
|
||||
newcall = iax_session_new();
|
||||
else {
|
||||
fprintf(f, "Already attempting to call somewhere, please cancel first!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
if ( !(peer = malloc(sizeof(struct peer)))) {
|
||||
fprintf(f, "Warning: Unable to allocate memory!\n");
|
||||
return;
|
||||
}
|
||||
|
||||
peer->time = time(0);
|
||||
peer->session = newcall;
|
||||
peer->gsmin = 0;
|
||||
peer->gsmout = 0;
|
||||
|
||||
peer->next = peers;
|
||||
peers = peer;
|
||||
|
||||
most_recent_answer = peer;
|
||||
|
||||
iax_call(peer->session, num, 10);
|
||||
}
|
||||
|
||||
void
|
||||
answer_call(void)
|
||||
{
|
||||
if(most_recent_answer)
|
||||
iax_answer(most_recent_answer->session);
|
||||
printf("Answering call!\n");
|
||||
answered_call = 1;
|
||||
}
|
||||
|
||||
void
|
||||
dump_call(void)
|
||||
{
|
||||
if(most_recent_answer)
|
||||
{
|
||||
iax_hangup(most_recent_answer->session,"");
|
||||
free(most_recent_answer);
|
||||
}
|
||||
printf("Dumping call!\n");
|
||||
answered_call = 0;
|
||||
most_recent_answer = 0;
|
||||
answered_call = 0;
|
||||
peers = 0;
|
||||
newcall = 0;
|
||||
}
|
||||
|
||||
void
|
||||
reject_call(void)
|
||||
{
|
||||
iax_reject(most_recent_answer->session, "Call rejected manually.");
|
||||
most_recent_answer = 0;
|
||||
}
|
||||
|
||||
void
|
||||
handle_event(FILE *f, struct iax_event *e, struct peer *p)
|
||||
{
|
||||
int len,n;
|
||||
WHOUT *wh,*wh1;
|
||||
short fr[160];
|
||||
static paused_xmit = 0;
|
||||
|
||||
|
||||
switch(e->etype) {
|
||||
case IAX_EVENT_HANGUP:
|
||||
iax_hangup(most_recent_answer->session, "Byeee!");
|
||||
fprintf(f, "Call disconnected by peer\n");
|
||||
free(most_recent_answer);
|
||||
most_recent_answer = 0;
|
||||
answered_call = 0;
|
||||
peers = 0;
|
||||
newcall = 0;
|
||||
|
||||
break;
|
||||
|
||||
case IAX_EVENT_REJECT:
|
||||
fprintf(f, "Authentication was rejected\n");
|
||||
break;
|
||||
case IAX_EVENT_ACCEPT:
|
||||
fprintf(f, "Waiting for answer... RING RING\n");
|
||||
issue_prompt(f);
|
||||
break;
|
||||
case IAX_EVENT_ANSWER:
|
||||
answer_call();
|
||||
break;
|
||||
case IAX_EVENT_VOICE:
|
||||
switch(e->event.voice.format) {
|
||||
case AST_FORMAT_GSM:
|
||||
if(e->event.voice.datalen % 33) {
|
||||
fprintf(stderr, "Weird gsm frame, not a multiple of 33.\n");
|
||||
break;
|
||||
}
|
||||
|
||||
if (!p->gsmin)
|
||||
p->gsmin = gsm_create();
|
||||
|
||||
len = 0;
|
||||
while(len < e->event.voice.datalen) {
|
||||
if(gsm_decode(p->gsmin, (char *) e->event.voice.data + len, fr)) {
|
||||
fprintf(stderr, "Bad GSM data\n");
|
||||
break;
|
||||
} else { /* its an audio packet to be output to user */
|
||||
|
||||
/* get count of pending items in audio output queue */
|
||||
n = 0;
|
||||
if (outqueue)
|
||||
{ /* determine number of pending out queue items */
|
||||
for(wh = outqueue; wh != NULL; wh = wh->next)
|
||||
{
|
||||
if (!(wh->w.dwFlags & WHDR_DONE)) n++;
|
||||
}
|
||||
}
|
||||
/* if not too many, send to user, otherwise chuck packet */
|
||||
if (n <= OUT_DEPTH) /* if not to chuck packet */
|
||||
{
|
||||
/* malloc the memory for the queue item */
|
||||
wh = (WHOUT *) malloc(sizeof(WHOUT));
|
||||
if (wh == (WHOUT *) NULL) /* if error, bail */
|
||||
{
|
||||
fprintf(stderr,"Outa memory!!!!\n");
|
||||
exit(255);
|
||||
}
|
||||
/* initialize the queue entry */
|
||||
memset(wh,0,sizeof(WHOUT));
|
||||
/* copy the PCM data from the gsm conversion buffer */
|
||||
memcpy((char *)wh->data,(char *)fr,sizeof(fr));
|
||||
/* set parameters for data */
|
||||
wh->w.lpData = (char *) wh->data;
|
||||
wh->w.dwBufferLength = 320;
|
||||
|
||||
/* prepare buffer for output */
|
||||
if (waveOutPrepareHeader(wout,&wh->w,sizeof(WAVEHDR)))
|
||||
{
|
||||
fprintf(stderr,"Cannot prepare header for audio out\n");
|
||||
exit(255);
|
||||
}
|
||||
/* if not currently transmitting, hold off a couple of packets for
|
||||
smooth sounding output */
|
||||
if ((!n) && (!paused_xmit))
|
||||
{
|
||||
/* pause output (before starting) */
|
||||
waveOutPause(wout);
|
||||
/* indicate as such */
|
||||
paused_xmit = 1;
|
||||
}
|
||||
/* queue packet for output on audio device */
|
||||
if (waveOutWrite(wout,&wh->w,sizeof(WAVEHDR)))
|
||||
{
|
||||
fprintf(stderr,"Cannot output to wave output device\n");
|
||||
exit(255);
|
||||
}
|
||||
/* if we are paused, and we have enough packets, start audio */
|
||||
if ((n > OUT_PAUSE_THRESHOLD) && paused_xmit)
|
||||
{
|
||||
/* start the output */
|
||||
waveOutRestart(wout);
|
||||
/* indicate as such */
|
||||
paused_xmit = 0;
|
||||
}
|
||||
/* insert it onto tail of outqueue */
|
||||
if (outqueue == NULL) /* if empty queue */
|
||||
outqueue = wh; /* point queue to new entry */
|
||||
else /* otherwise is non-empty queue */
|
||||
{
|
||||
wh1 = outqueue;
|
||||
while(wh1->next) wh1 = wh1->next; /* find last entry in queue */
|
||||
wh1->next = wh; /* point it to new entry */
|
||||
}
|
||||
}
|
||||
#ifdef PRINTCHUCK
|
||||
else printf("Chucking packet!!\n");
|
||||
#endif
|
||||
}
|
||||
len += 33;
|
||||
}
|
||||
break;
|
||||
default :
|
||||
fprintf(f, "Don't know how to handle that format %d\n", e->event.voice.format);
|
||||
}
|
||||
break;
|
||||
case IAX_EVENT_RINGA:
|
||||
break;
|
||||
default:
|
||||
fprintf(f, "Unknown event: %d\n", e->etype);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
void
|
||||
parse_cmd(FILE *f, int argc, char **argv)
|
||||
{
|
||||
_strupr(argv[0]);
|
||||
if(!strcmp(argv[0], "HELP")) {
|
||||
if(argc == 1)
|
||||
dump_array(f, help);
|
||||
else if(argc == 2) {
|
||||
if(!strcmp(argv[1], "HELP"))
|
||||
fprintf(f, "Help <Command>\t-\tDisplays general help or specific help on command if supplied an arguement\n");
|
||||
else if(!strcmp(argv[1], "QUIT"))
|
||||
fprintf(f, "Quit\t\t-\tShuts down the miniphone\n");
|
||||
else fprintf(f, "No help available on %s\n", argv[1]);
|
||||
} else {
|
||||
fprintf(f, "Too many arguements for command help.\n");
|
||||
}
|
||||
} else if(!strcmp(argv[0], "STATUS")) {
|
||||
if(argc == 1) {
|
||||
int c = 0;
|
||||
struct peer *peerptr = peers;
|
||||
|
||||
if(!peerptr)
|
||||
fprintf(f, "No session matches found.\n");
|
||||
else while(peerptr) {
|
||||
fprintf(f, "Listing sessions:\n\n");
|
||||
fprintf(f, "Session %d\n", ++c);
|
||||
fprintf(f, "Session existed for %d seconds\n", (int)time(0)-peerptr->time);
|
||||
if(answered_call)
|
||||
fprintf(f, "Call answered.\n");
|
||||
else fprintf(f, "Call ringing.\n");
|
||||
|
||||
peerptr = peerptr->next;
|
||||
}
|
||||
} else fprintf(f, "Too many arguments for command status.\n");
|
||||
} else if(!strcmp(argv[0], "ANSWER")) {
|
||||
if(argc > 1)
|
||||
fprintf(f, "Too many arguements for command answer\n");
|
||||
else answer_call();
|
||||
} else if(!strcmp(argv[0], "REJECT")) {
|
||||
if(argc > 1)
|
||||
fprintf(f, "Too many arguements for command reject\n");
|
||||
else {
|
||||
fprintf(f, "Rejecting current phone call.\n");
|
||||
reject_call();
|
||||
}
|
||||
} else if(!strcmp(argv[0], "CALL")) {
|
||||
if(argc > 2)
|
||||
fprintf(f, "Too many arguements for command call\n");
|
||||
else {
|
||||
call(f, argv[1]);
|
||||
}
|
||||
} else if(!strcmp(argv[0], "DUMP")) {
|
||||
if(argc > 1)
|
||||
fprintf(f, "Too many arguements for command dump\n");
|
||||
else {
|
||||
dump_call();
|
||||
}
|
||||
} else if(!strcmp(argv[0], "DTMF")) {
|
||||
if(argc > 2)
|
||||
{
|
||||
fprintf(f, "Too many arguements for command dtmf\n");
|
||||
return;
|
||||
}
|
||||
if (argc < 1)
|
||||
{
|
||||
fprintf(f, "Too many arguements for command dtmf\n");
|
||||
return;
|
||||
}
|
||||
if(most_recent_answer)
|
||||
iax_send_dtmf(most_recent_answer->session,*argv[1]);
|
||||
} else if(!strcmp(argv[0], "QUIT")) {
|
||||
if(argc > 1)
|
||||
fprintf(f, "Too many arguements for command quit\n");
|
||||
else {
|
||||
fprintf(f, "Good bye!\n");
|
||||
exit(1);
|
||||
}
|
||||
} else fprintf(f, "Unknown command of %s\n", argv[0]);
|
||||
}
|
||||
|
||||
void
|
||||
issue_prompt(FILE *f)
|
||||
{
|
||||
fprintf(f, "TeleClient> ");
|
||||
fflush(f);
|
||||
}
|
||||
|
||||
void
|
||||
dump_array(FILE *f, char **array) {
|
||||
while(*array)
|
||||
fprintf(f, "%s\n", *array++);
|
||||
}
|
||||
Reference in New Issue
Block a user