Check for invalid COMSTACK addresses

Check return value of cs_parse_host in cs_create_host_proxy. For
example, yaz-url would SEGV if ssl/https was given and SSL was
not enabled in the built (as it happens on Windows).

diff --git a/src/comstack.c b/src/comstack.c
index b81e89c..74faf5c 100644 (file)
--- a/src/comstack.c
+++ b/src/comstack.c
@@ -169,7 +169,8 @@ COMSTACK cs_create_host_proxy(const char *vhost, int blocking, void **vp,
     CS_TYPE t;
     char *connect_host = 0;
 
-    cs_parse_host(vhost, &host, &t, &proto, &connect_host);
+    if (!cs_parse_host(vhost, &host, &t, &proto, &connect_host))
+        return 0;
 
     if (t == tcpip_type)
     {