From dc17a4c1c8b4d2591b9ad8ca4bcf28e023730a23 Mon Sep 17 00:00:00 2001
From: Martin Pycko <martinp@digium.com>
Date: Fri, 21 Nov 2003 18:24:49 +0000
Subject: [PATCH] Don't crash if ZapHangup, ZapTransfer, ZapDialOffhook are
 used on the channel that is onhook (idle)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@1775 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_zap.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index dc1e8b02d1..0f21aacf0c 100755
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -3857,6 +3857,8 @@ static struct ast_channel *zt_new(struct zt_pvt *i, int state, int startpbx, int
 		i->isidlecall = 0;
 		i->alreadyhungup = 0;
 #endif
+		/* clear the fake event in case we posted one before we had ast_chanenl */
+		i->fake_event = 0;
 		/* Assure there is no confmute on this channel */
 		zt_confmute(i, 0);
 		if (startpbx) {
@@ -6814,6 +6816,10 @@ static int action_transfer(struct mansession *s, struct message *m)
 		return 0;
 	}
 	p = find_channel(atoi(channel));
+	if (p->owner && p->owner->_state != AST_STATE_UP) {
+		astman_send_error(s, m, "Channel is on hook");
+		return 0;
+	}
 	if (!p) {
 		astman_send_error(s, m, "No such channel");
 		return 0;
@@ -6832,6 +6838,10 @@ static int action_transferhangup(struct mansession *s, struct message *m)
 		return 0;
 	}
 	p = find_channel(atoi(channel));
+	if (p->owner && p->owner->_state != AST_STATE_UP) {
+		astman_send_error(s, m, "Channel is on hook");
+		return 0;
+	}
 	if (!p) {
 		astman_send_error(s, m, "No such channel");
 		return 0;
@@ -6856,6 +6866,15 @@ static int action_zapdialoffhook(struct mansession *s, struct message *m)
 		return 0;
 	}
 	p = find_channel(atoi(channel));
+	if (p->owner) {
+		if (p->owner->_state != AST_STATE_UP) {
+			astman_send_error(s, m, "Channel is on hook");
+			return 0;
+		}
+	} else {
+		astman_send_error(s, m, "Channel does not have it's owner");
+		return 0;
+	}
 	if (!p) {
 		astman_send_error(s, m, "No such channel");
 		return 0;
-- 
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