From 639ece2a315a29121dd8490926a3904d07ce3a37 Mon Sep 17 00:00:00 2001
From: Russell Bryant <russell@russellbryant.com>
Date: Mon, 27 Apr 2009 19:08:12 +0000
Subject: [PATCH] Merged revisions 190661-190662 via svnmerge from
 https://origsvn.digium.com/svn/asterisk/branches/1.4

........
r190661 | russell | 2009-04-27 14:00:54 -0500 (Mon, 27 Apr 2009) | 9 lines

Resolve a crash in res_smdi when used with chan_dahdi.

When chan_dahdi goes to get an SMDI message, it provides no search criteria.
It just grabs the next message that arrives.  This code was written with the
SMDI dialplan functions in mind, since that is now the preferred method of
using SMDI.  However, this broke support of it being used from chan_dahdi.

(closes AST-212)

........
r190662 | russell | 2009-04-27 14:03:59 -0500 (Mon, 27 Apr 2009) | 2 lines

Fix a typo from 190661.

........


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@190663 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 res/res_smdi.c | 28 ++++++++++++++++++++++++++--
 1 file changed, 26 insertions(+), 2 deletions(-)

diff --git a/res/res_smdi.c b/res/res_smdi.c
index d3440f9d21..cb8cd61200 100644
--- a/res/res_smdi.c
+++ b/res/res_smdi.c
@@ -378,7 +378,18 @@ static void *smdi_msg_find(struct ast_smdi_interface *iface,
 
 	switch (type) {
 	case SMDI_MD:
-		if (ast_test_flag(&options, OPT_SEARCH_TERMINAL)) {
+		if (ast_strlen_zero(search_key)) {
+			struct ast_smdi_md_message *md_msg = NULL;
+
+			/* No search key provided (the code from chan_dahdi does this).
+			 * Just pop the top message off of the queue. */
+
+			ASTOBJ_CONTAINER_TRAVERSE(&iface->md_q, !md_msg, do {
+				md_msg = ASTOBJ_REF(iterator);
+			} while (0); );
+
+			msg = md_msg;
+		} else if (ast_test_flag(&options, OPT_SEARCH_TERMINAL)) {
 			struct ast_smdi_md_message *md_msg = NULL;
 
 			/* Searching by the message desk terminal */
@@ -406,7 +417,20 @@ static void *smdi_msg_find(struct ast_smdi_interface *iface,
 		}
 		break;
 	case SMDI_MWI:
-		msg = ASTOBJ_CONTAINER_FIND(&iface->mwi_q, search_key);
+		if (ast_strlen_zero(search_key)) {
+			struct ast_smdi_mwi_message *mwi_msg = NULL;
+
+			/* No search key provided (the code from chan_dahdi does this).
+			 * Just pop the top message off of the queue. */
+
+			ASTOBJ_CONTAINER_TRAVERSE(&iface->mwi_q, !mwi_msg, do {
+				mwi_msg = ASTOBJ_REF(iterator);
+			} while (0); );
+
+			msg = mwi_msg;
+		} else {
+			msg = ASTOBJ_CONTAINER_FIND(&iface->mwi_q, search_key);
+		}
 		break;
 	}