Add JSON_ALLOW_NUL decoding flag for enabling NUL byte support

test/suites/api/test_dump.c

@@ -180,6 +180,20 @@ static void escape_slashes()
     json_decref(json);
 }
 
+static void encode_nul_byte()
+{
+    json_t *json;
+    char *result;
+
+    json = json_stringn("nul byte \0 in string", 20);
+    result = json_dumps(json, JSON_ENCODE_ANY);
+    if(!result || memcmp(result, "\"nul byte \\u0000 in string\"", 27))
+        fail("json_dumps failed to dump an embedded NUL byte");
+
+    free(result);
+    json_decref(json);
+}
+
 static void run_tests()
 {
     encode_null();
@@ -187,4 +201,5 @@ static void run_tests()
     circular_references();
     encode_other_than_array_or_object();
     escape_slashes();
+    encode_nul_byte();
 }

test/suites/api/test_load.c

@@ -115,6 +115,26 @@ static void decode_int_as_real()
 #endif
 }
 
+static void allow_nul()
+{
+    const char *text = "\"nul byte \\u0000 in string\"";
+    const char *expected = "nul byte \0 in string";
+    size_t len = 20;
+    json_t *json;
+
+    json = json_loads(text, JSON_ALLOW_NUL | JSON_DECODE_ANY, NULL);
+    if(!json || !json_is_string(json))
+        fail("unable to decode embedded NUL byte");
+
+    if(json_string_length(json) != len)
+        fail("decoder returned wrong string length");
+
+    if(memcmp(json_string_value(json), expected, len + 1))
+        fail("decoder returned wrong string content");
+
+    json_decref(json);
+}
+
 static void load_wrong_args()
 {
     json_t *json;
@@ -161,6 +181,7 @@ static void run_tests()
     disable_eof_check();
     decode_any();
     decode_int_as_real();
+    allow_nul();
     load_wrong_args();
     position();
 }

test/suites/valid/escaped-null-byte-in-string/input

@@ -1 +0,0 @@
-["null char \u0000 in string"]

test/suites/valid/escaped-null-byte-in-string/output

@@ -1 +0,0 @@
-["null char \u0000 in string"]