tm: safety check not to allocate 0 bytes in rpc command

(cherry picked from commit 88b6757)
kamailio · May 19, 2015 · 3fd7f81 · 3fd7f81
1 parent 7cb9428
commit 3fd7f81
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/modules/tm/rpc_uac.c b/modules/tm/rpc_uac.c
@@ -218,7 +218,12 @@ static char *get_hfblock(str *uri, struct hdr_field *hf, int proto,
 		DBG("get_hfblock: one more hf processed\n");
 	} /* header loop */
 
-	     /* construct a single header block now */
+	if(total_len==0) {
+		LM_DBG("empty result for headers block\n");
+		goto error;
+	}
+
+	/* construct a single header block now */
 	ret = pkg_malloc(total_len);
 	if (!ret) {
 		LOG(L_ERR, "get_hfblock: no pkg mem for hf block\n");