[sr-dev] git:4.2:3fd7f816: tm: safety check not to allocate 0 bytes in rpc command

[Daniel-Constantin Mierla]

Module: kamailio
Branch: 4.2
Commit: 3fd7f816607acbc80ed49b5743dd55870d6b1e92
URL: https://github.com/kamailio/kamailio/commit/3fd7f816607acbc80ed49b5743dd55870d6b1e92

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2015-05-19T09:30:31+02:00

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

(cherry picked from commit 88b67575f9457312d0277e16dc06103be3a31965)

---

Modified: modules/tm/rpc_uac.c

---

Diff:  https://github.com/kamailio/kamailio/commit/3fd7f816607acbc80ed49b5743dd55870d6b1e92.diff
Patch: https://github.com/kamailio/kamailio/commit/3fd7f816607acbc80ed49b5743dd55870d6b1e92.patch

---

diff --git a/modules/tm/rpc_uac.c b/modules/tm/rpc_uac.c
index 507f4ae..db692ef 100644
--- 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");