Returns with an error notice if CHANNEL function of SIP channel is read without argum...

(Closes issue #18653)
Reported by: wuwu
Patches:
      diff.patch uploaded by jrose (license 1225)
Tested by: jrose

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@310088 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/sip/dialplan_functions.c b/channels/sip/dialplan_functions.c
index e14975d5dd71977568af34aa15ed3cb670d7ca85..7454d699bb9b7dbe1f5abbcc9dbe05f7eb6b380d 100644 (file)
--- a/channels/sip/dialplan_functions.c
+++ b/channels/sip/dialplan_functions.c
@@ -47,6 +47,13 @@ int sip_acf_channel_read(struct ast_channel *chan, const char *funcname, char *p
                AST_APP_ARG(type);
                AST_APP_ARG(field);
        );
+               
+       /* Check for zero arguments */
+       if (ast_strlen_zero(parse)) {
+               ast_log(LOG_ERROR, "Cannot call %s without arguments\n", funcname);
+               return -1;
+       }
+
        AST_STANDARD_APP_ARGS(args, parse);
 
        /* Sanity check */