From e51a0e25f29e9d4b907bd293965d00ceffa91bee Mon Sep 17 00:00:00 2001
From: Joshua Colp <jcolp@digium.com>
Date: Thu, 16 Nov 2006 18:26:50 +0000
Subject: [PATCH] Because of the way chan_local is written we should be extra
 careful and make sure our callback functions have a tech_pvt. (issue #8275
 reported by mflorell)

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@47750 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---
 channels/chan_local.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/channels/chan_local.c b/channels/chan_local.c
index 29c8565731..b3bf3b24c5 100644
--- a/channels/chan_local.c
+++ b/channels/chan_local.c
@@ -168,6 +168,9 @@ static int local_answer(struct ast_channel *ast)
 	int isoutbound;
 	int res = -1;
 
+	if (!p)
+		return -1;
+
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	if (isoutbound) {
@@ -245,6 +248,9 @@ static int local_write(struct ast_channel *ast, struct ast_frame *f)
 	int res = -1;
 	int isoutbound;
 
+	if (!p)
+		return -1;
+
 	/* Just queue for delivery to the other side */
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
@@ -289,6 +295,9 @@ static int local_indicate(struct ast_channel *ast, int condition)
 	struct ast_frame f = { AST_FRAME_CONTROL, };
 	int isoutbound;
 
+	if (!p)
+		return -1;
+
 	/* Queue up a frame representing the indication as a control frame */
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
@@ -305,6 +314,9 @@ static int local_digit(struct ast_channel *ast, char digit)
 	struct ast_frame f = { AST_FRAME_DTMF, };
 	int isoutbound;
 
+	if (!p)
+		return -1;
+
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	f.subclass = digit;
@@ -320,6 +332,9 @@ static int local_sendhtml(struct ast_channel *ast, int subclass, const char *dat
 	struct ast_frame f = { AST_FRAME_HTML, };
 	int isoutbound;
 
+	if (!p)
+		return -1;
+	
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	f.subclass = subclass;
@@ -338,6 +353,9 @@ static int local_call(struct ast_channel *ast, char *dest, int timeout)
 	int res;
 	struct ast_var_t *varptr = NULL, *new;
 	size_t len, namelen;
+
+	if (!p)
+		return -1;
 	
 	ast_mutex_lock(&p->lock);
 
@@ -414,6 +432,9 @@ static int local_hangup(struct ast_channel *ast)
 	struct ast_channel *ochan = NULL;
 	int glaredetect;
 
+	if (!p)
+		return -1;
+
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	if (isoutbound) {
-- 
2.47.2