Merge pull request #64 from Stormwind99/fix-mgroup-null-source-crash

Fix crash during parsing of mgroup in conf file when optional source is excluded.
troglobit · Apr 22, 2017 · f9f8f77 · f9f8f77
2 parents 98cb358 + e5dab1f
commit f9f8f77
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/parse-conf.c b/parse-conf.c
@@ -148,7 +148,9 @@ static int join_mgroup(int lineno, char *ifname, char *source, char *group)
 		struct in_addr src;
 		struct in_addr grp;
 
-		if ((inet_pton(AF_INET, source, &src) <= 0)) {
+		memset(&src, 0, sizeof(src));
+
+		if (source && (inet_pton(AF_INET, source, &src) <= 0)) {
 			WARN("Invalid IPv4 multicast source: %s", source);
 			return 1;
 		}