Add 'l' option to CDR dialplan function which will cause it to pass the last...

Add 'l' option to CDR dialplan function which will cause it to pass the last CDR record to getvar instead of the first. (issue #7689 reported by voipgate)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@40226 65c4cc65-6c06-0410-ace0-fbb531ad65f3

funcs/func_cdr.c

@@ -42,9 +42,11 @@ ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
 enum {
 	OPT_RECURSIVE = (1 << 0),
 	OPT_UNPARSED = (1 << 1),
+	OPT_LAST = (1 << 2),
 } cdr_option_flags;
 
 AST_APP_OPTIONS(cdr_func_options, {
+	AST_APP_OPTION('l', OPT_LAST),
 	AST_APP_OPTION('r', OPT_RECURSIVE),
 	AST_APP_OPTION('u', OPT_UNPARSED),
 });
@@ -54,6 +56,7 @@ static int cdr_read(struct ast_channel *chan, char *cmd, char *parse,
 {
 	char *ret;
 	struct ast_flags flags = { 0 };
+	struct ast_cdr *cdr = chan->cdr;
 	AST_DECLARE_APP_ARGS(args,
 			     AST_APP_ARG(variable);
 			     AST_APP_ARG(options);
@@ -62,7 +65,7 @@ static int cdr_read(struct ast_channel *chan, char *cmd, char *parse,
 	if (ast_strlen_zero(parse))
 		return -1;
 
-	if (!chan->cdr)
+	if (!cdr)
 		return -1;
 
 	AST_STANDARD_APP_ARGS(args, parse);
@@ -70,7 +73,11 @@ static int cdr_read(struct ast_channel *chan, char *cmd, char *parse,
 	if (!ast_strlen_zero(args.options))
 		ast_app_parse_options(cdr_func_options, &flags, NULL, args.options);
 
-	ast_cdr_getvar(chan->cdr, args.variable, &ret, buf, len,
+	if (ast_test_flag(&flags, OPT_LAST))
+		while (cdr->next)
+			cdr = cdr->next;
+
+	ast_cdr_getvar(cdr, args.variable, &ret, buf, len,
 		       ast_test_flag(&flags, OPT_RECURSIVE),
 			   ast_test_flag(&flags, OPT_UNPARSED));