call_control: prevent buffer overflow

Fixes Coverity CID #163990
OpenSIPS · Mar 22, 2017 · 912214b · 912214b
1 parent 5cca914
commit 912214b
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/modules/call_control/call_control.c b/modules/call_control/call_control.c
@@ -617,11 +617,11 @@ make_custom_request(struct sip_msg *msg, CallInfo *call)
 			return NULL;
 		}
         if (pt.flags & PV_VAL_INT) {
-            len += snprintf(request + len, sizeof(request),
+            len += snprintf(request + len, sizeof(request) - len - 1,
                     "%.*s = %d ", al->name.len, al->name.s,
                     pt.ri);
         } else if (pt.flags & PV_VAL_STR) {
-            len += snprintf(request + len, sizeof(request),
+            len += snprintf(request + len, sizeof(request) - len - 1,
                     "%.*s = %.*s ", al->name.len, al->name.s,
                     pt.rs.len, pt.rs.s);
         }