Change match criteria existence in ast_channel_cmp_cb to use ast_strlen_zero.

(closes issue #16161)
Reported by: may213
Patches:
      core-show-channel.patch uploaded by may213 (license 454)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@235226 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/channel.c b/main/channel.c
index 0bea870d84501e3cb7f0b257d276978f30b090d2..9f3f550df6a1ab1a3ba222945297563e28fff8aa 100644 (file)
--- a/main/channel.c
+++ b/main/channel.c
@@ -1322,12 +1322,12 @@ static int ast_channel_cmp_cb(void *obj, void *arg, int flags)
 
        ast_channel_lock(chan);
 
-       if (cmp_args->name) { /* match by name */
+       if (!ast_strlen_zero(cmp_args->name)) { /* match by name */
                if ((!name_len && strcasecmp(chan->name, cmp_args->name)) ||
                                (name_len && strncasecmp(chan->name, cmp_args->name, name_len))) {
                        ret = 0; /* name match failed */
                }
-       } else if (cmp_args->exten) {
+       } else if (!ast_strlen_zero(cmp_args->exten)) {
                if (cmp_args->context && strcasecmp(chan->context, cmp_args->context) &&
                                strcasecmp(chan->macrocontext, cmp_args->context)) {
                        ret = 0; /* context match failed */
@@ -1336,11 +1336,13 @@ static int ast_channel_cmp_cb(void *obj, void *arg, int flags)
                                strcasecmp(chan->macroexten, cmp_args->exten)) {
                        ret = 0; /* exten match failed */
                }
-       } else if (cmp_args->uniqueid) {
+       } else if (!ast_strlen_zero(cmp_args->uniqueid)) {
                if ((!name_len && strcasecmp(chan->uniqueid, cmp_args->uniqueid)) ||
                                (name_len && strncasecmp(chan->uniqueid, cmp_args->uniqueid, name_len))) {
                        ret = 0; /* uniqueid match failed */
                }
+       } else {
+               ret = 0;
        }
 
        ast_channel_unlock(chan);