[Asterisk-code-review] res xmpp: Don't crash when trying to send a message without ... (asterisk[master])

[Sean Bright]

Sean Bright has uploaded a new change for review. ( https://gerrit.asterisk.org/5294 )

Change subject: res_xmpp: Don't crash when trying to send a message without a connection
......................................................................

res_xmpp: Don't crash when trying to send a message without a connection

If we never establish a connection to our Jabber server, iksemel never sets up
its internal transport pointer, so attempting to send a message dereferences a
NULL pointer and causes a crash.

ASTERISK-21855 #close
Reported by: Jeremy Kister

Change-Id: I204a568894e4a53ab929783ecc594a000f04d79c
---
M res/res_xmpp.c
1 file changed, 8 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.asterisk.org:29418/asterisk refs/changes/94/5294/1

diff --git a/res/res_xmpp.c b/res/res_xmpp.c
index 1aa865c..617c401 100644
--- a/res/res_xmpp.c
+++ b/res/res_xmpp.c
@@ -2562,10 +2562,16 @@
 static int xmpp_client_send_raw_message(struct ast_xmpp_client *client, const char *message)
 {
 	int ret;
-#ifdef HAVE_OPENSSL
-	int len = strlen(message);
 
+	if (client->state == XMPP_STATE_DISCONNECTED) {
+		/* iks_send_raw will crash without a connection */
+		return IKS_NET_NOCONN;
+	}
+
+#ifdef HAVE_OPENSSL
 	if (xmpp_is_secure(client)) {
+		int len = strlen(message);
+
 		ret = SSL_write(client->ssl_session, message, len);
 		if (ret) {
 			/* Log the message here, because iksemel's logHook is

-- 
To view, visit https://gerrit.asterisk.org/5294
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I204a568894e4a53ab929783ecc594a000f04d79c
Gerrit-PatchSet: 1
Gerrit-Project: asterisk
Gerrit-Branch: master
Gerrit-Owner: Sean Bright <sean.bright at gmail.com>