[sr-dev] git:master:f33abd5e: nat_traversal: check parameter for send_keepalive()

[Daniel-Constantin Mierla]

Module: kamailio
Branch: master
Commit: f33abd5e2d5978ba9e6e8a48066b0daff70c0b3b
URL: https://github.com/kamailio/kamailio/commit/f33abd5e2d5978ba9e6e8a48066b0daff70c0b3b

Author: Daniel-Constantin Mierla <miconda at gmail.com>
Committer: Daniel-Constantin Mierla <miconda at gmail.com>
Date: 2021-04-08T12:05:07+02:00

nat_traversal: check parameter for send_keepalive()

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Modified: src/modules/nat_traversal/nat_traversal.c

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Diff:  https://github.com/kamailio/kamailio/commit/f33abd5e2d5978ba9e6e8a48066b0daff70c0b3b.diff
Patch: https://github.com/kamailio/kamailio/commit/f33abd5e2d5978ba9e6e8a48066b0daff70c0b3b.patch

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diff --git a/src/modules/nat_traversal/nat_traversal.c b/src/modules/nat_traversal/nat_traversal.c
index 27dbf2736d..4cfe8d4018 100644
--- a/src/modules/nat_traversal/nat_traversal.c
+++ b/src/modules/nat_traversal/nat_traversal.c
@@ -1554,6 +1554,11 @@ static void send_keepalive(NAT_Contact *contact)
 	unsigned short lport;
 	char lproto;
 
+	if(contact==NULL || contact->socket==NULL) {
+		LM_ERR("invalid parameters\n");
+		return;
+	}
+
 	if(keepalive_params.from == NULL) {
 		if(contact->socket != last_socket) {
 			memcpy(from_ip, contact->socket->address_str.s,