Check tempchan->type in app_zapscan.c (bug 1250)

[asterisk/asterisk.git] / apps / app_zapscan.c

diff --git a/apps/app_zapscan.c b/apps/app_zapscan.c
index d41723c..b24fe5d 100755 (executable)
--- a/apps/app_zapscan.c
+++ b/apps/app_zapscan.c
@@ -256,6 +256,8 @@ static int conf_exec(struct ast_channel *chan, void *data)
                 ast_answer(chan);
 
         for (;;) {
+               if (ast_waitfor(chan, 100) < 0)
+                       break;
                f = ast_read(chan);
                if (!f)
                        break;
@@ -267,7 +269,7 @@ static int conf_exec(struct ast_channel *chan, void *data)
                 tempchan = ast_channel_walk(tempchan);
                 if ( !tempchan && !lastchan )
                         break;
-                if ( tempchan && (!strcmp(tempchan->type, "Zap")) && (tempchan != chan) ) {
+                if ( tempchan && tempchan->type && (!strcmp(tempchan->type, "Zap")) && (tempchan != chan) ) {
                         ast_verbose(VERBOSE_PREFIX_3 "Zap channel %s is in-use, monitoring...\n", tempchan->name);
                         strcpy(confstr, tempchan->name);
                         if ((tmp = strchr(confstr,'-'))) {