Merged revisions 231688 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

................
  r231688 | mnicholson | 2009-11-30 15:31:55 -0600 (Mon, 30 Nov 2009) | 15 lines
  
  Merged revisions 231614 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.4
  
  ........
    r231614 | mnicholson | 2009-11-30 15:11:44 -0600 (Mon, 30 Nov 2009) | 8 lines
    
    Remove duplicate entries from voicemail format lists. This prevents app_voicemail from entering an infinite loop when the same format is specified twice in the format list.
    
    (closes issue #15625)
    Reported by: Shagg63
    Tested by: mnicholson
    
    Review: https://reviewboard.asterisk.org/r/429/
  ........
................


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.6.0@231691 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -9198,7 +9198,7 @@ static int load_config(int reload)
 	char *cat;
 	struct ast_variable *var;
 	const char *val;
-	char *q, *stringp;
+	char *q, *stringp, *tmp;
 	int x;
 	int tmpadsi[4];
 	struct ast_flags config_flags = { reload ? CONFIG_FLAG_FILEUNCHANGED : 0 };
@@ -9482,8 +9482,16 @@ static int load_config(int reload)
 		}
 
 		val = ast_variable_retrieve(cfg, "general", "format");
-		if (!val)
+		if (!val) {
 			val = "wav";	
+		} else {
+			tmp = ast_strdupa(val);
+			val = ast_format_str_reduce(tmp);
+			if (!val) {
+				ast_log(LOG_ERROR, "Error processing format string, defaulting to format 'wav'\n");
+				val = "wav";
+			}
+		}
 		ast_copy_string(vmfmts, val, sizeof(vmfmts));
 
 		skipms = 3000;

include/asterisk/file.h

@@ -40,6 +40,9 @@ extern "C" {
 struct ast_filestream;
 struct ast_format;
 
+/*! The maximum number of formats we expect to see in a format string */
+#define AST_MAX_FORMATS 10
+
 /*! Convenient for waiting */
 #define AST_DIGIT_ANY "0123456789#*ABCD"
 #define AST_DIGIT_ANYNUM "0123456789"
@@ -315,6 +318,14 @@ off_t ast_tellstream(struct ast_filestream *fs);
  */ 
 struct ast_frame *ast_readframe(struct ast_filestream *s);
 
+/*! Remove duplicate formats from a format string. */
+/*!
+ * \param fmts a format string, this string will be modified
+ * \retval NULL error
+ * \return a pointer to the reduced format string, this is a pointer to fmts
+ */
+char *ast_format_str_reduce(char *fmts);
+
 #if defined(__cplusplus) || defined(c_plusplus)
 }
 #endif

main/app.c

@@ -45,7 +45,7 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 #include "asterisk/linkedlists.h"
 #include "asterisk/strings.h"
 
-#define MAX_OTHER_FORMATS 10
+#define AST_MAX_FORMATS 10
 
 static AST_RWLIST_HEAD_STATIC(groups, ast_group_info);
 
@@ -575,8 +575,8 @@ static int __ast_play_and_record(struct ast_channel *chan, const char *playfile,
 	char *fmts;
 	char comment[256];
 	int x, fmtcnt = 1, res = -1, outmsg = 0;
-	struct ast_filestream *others[MAX_OTHER_FORMATS];
-	char *sfmt[MAX_OTHER_FORMATS];
+	struct ast_filestream *others[AST_MAX_FORMATS];
+	char *sfmt[AST_MAX_FORMATS];
 	char *stringp = NULL;
 	time_t start, end;
 	struct ast_dsp *sildet = NULL;   /* silence detector dsp */
@@ -622,8 +622,8 @@ static int __ast_play_and_record(struct ast_channel *chan, const char *playfile,
 	sfmt[0] = ast_strdupa(fmts);
 
 	while ((fmt = strsep(&stringp, "|"))) {
-		if (fmtcnt > MAX_OTHER_FORMATS - 1) {
-			ast_log(LOG_WARNING, "Please increase MAX_OTHER_FORMATS in app.c\n");
+		if (fmtcnt > AST_MAX_FORMATS - 1) {
+			ast_log(LOG_WARNING, "Please increase AST_MAX_FORMATS in file.h\n");
 			break;
 		}
 		sfmt[fmtcnt++] = ast_strdupa(fmt);
@@ -805,7 +805,7 @@ static int __ast_play_and_record(struct ast_channel *chan, const char *playfile,
 	}
 
 	if (prepend && outmsg) {
-		struct ast_filestream *realfiles[MAX_OTHER_FORMATS];
+		struct ast_filestream *realfiles[AST_MAX_FORMATS];
 		struct ast_frame *fr;
 
 		for (x = 0; x < fmtcnt; x++) {

main/file.c

@@ -1335,6 +1335,66 @@ int ast_stream_and_wait(struct ast_channel *chan, const char *file, const char *
 	return res;
 } 
 
+char *ast_format_str_reduce(char *fmts)
+{
+	struct ast_format *f;
+	struct ast_format *fmts_ptr[AST_MAX_FORMATS];
+	char *fmts_str[AST_MAX_FORMATS];
+	char *stringp, *type;
+	char *orig = fmts;
+	int i, j, x, found;
+	int len = strlen(fmts) + 1;
+
+	if (AST_RWLIST_RDLOCK(&formats)) {
+		ast_log(LOG_WARNING, "Unable to lock format list\n");
+		return NULL;
+	}
+
+	stringp = ast_strdupa(fmts);
+
+	for (x = 0; (type = strsep(&stringp, "|")) && x < AST_MAX_FORMATS; x++) {
+		AST_RWLIST_TRAVERSE(&formats, f, list) {
+			if (exts_compare(f->exts, type)) {
+				found = 1;
+				break;
+			}
+		}
+
+		fmts_str[x] = type;
+		if (found) {
+			fmts_ptr[x] = f;
+		} else {
+			fmts_ptr[x] = NULL;
+		}
+	}
+	AST_RWLIST_UNLOCK(&formats);
+
+	for (i = 0; i < x; i++) {
+		/* special handling for the first entry */
+		if (i == 0) {
+			fmts += snprintf(fmts, len, "%s", fmts_str[i]);
+			len -= (fmts - orig);
+			continue;
+		}
+
+		found = 0;
+		for (j = 0; j < i; j++) {
+			/* this is a duplicate */
+			if (fmts_ptr[j] == fmts_ptr[i]) {
+				found = 1;
+				break;
+			}
+		}
+
+		if (!found) {
+			fmts += snprintf(fmts, len, "|%s", fmts_str[i]);
+			len -= (fmts - orig);
+		}
+	}
+
+	return orig;
+}
+
 static char *handle_cli_core_show_file_formats(struct ast_cli_entry *e, int cmd, struct ast_cli_args *a)
 {
 #define FORMAT "%-10s %-10s %-20s\n"