Fix Segfault In features-config.c When Application Has No Arguments

Some applications do not require arguments.  Therefore, when parsing application
maps in features.conf, it is possible that app_data will be set to NULL.

* This patch sets app_data to "" if it is NULL.

Review: https://reviewboard.asterisk.org/r/2804
........

Merged revisions 399294 from http://svn.asterisk.org/svn/asterisk/branches/12

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@399295 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/features_config.c b/main/features_config.c
index d9a3043..91e7df3 100644 (file)
--- a/main/features_config.c
+++ b/main/features_config.c
@@ -1348,6 +1348,11 @@ static int applicationmap_handler(const struct aco_option *opt,
                *slash = '\0';
        }
 
+       /* Some applications do not require arguments. */
+       if (!args.app_data) {
+               args.app_data = "";
+       }
+
        /* Two syntaxes allowed for applicationmap:
         * Old: foo = *1,self,NoOp,Boo!,default
         * New: foo = *1,self,NoOp(Boo!),default