Bug 9505 - If the return value for local_queue_frame is set, then p->lock is no longer valid.

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.2@60846 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/chan_local.c

@@ -179,7 +179,8 @@ static int local_answer(struct ast_channel *ast)
 		res = local_queue_frame(p, isoutbound, &answer, ast);
 	} else
 		ast_log(LOG_WARNING, "Huh?  Local is being asked to answer?\n");
-	ast_mutex_unlock(&p->lock);
+	if (!res)
+		ast_mutex_unlock(&p->lock);
 	return res;
 }
 
@@ -262,7 +263,8 @@ static int local_write(struct ast_channel *ast, struct ast_frame *f)
 		ast_log(LOG_DEBUG, "Not posting to queue since already masked on '%s'\n", ast->name);
 		res = 0;
 	}
-	ast_mutex_unlock(&p->lock);
+	if (!res)
+		ast_mutex_unlock(&p->lock);
 	return res;
 }
 
@@ -302,8 +304,8 @@ static int local_indicate(struct ast_channel *ast, int condition)
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	f.subclass = condition;
-	res = local_queue_frame(p, isoutbound, &f, ast);
-	ast_mutex_unlock(&p->lock);
+	if (!(res = local_queue_frame(p, isoutbound, &f, ast)))
+		ast_mutex_unlock(&p->lock);
 	return res;
 }
 
@@ -320,8 +322,8 @@ static int local_digit(struct ast_channel *ast, char digit)
 	ast_mutex_lock(&p->lock);
 	isoutbound = IS_OUTBOUND(ast, p);
 	f.subclass = digit;
-	res = local_queue_frame(p, isoutbound, &f, ast);
-	ast_mutex_unlock(&p->lock);
+	if (!(res = local_queue_frame(p, isoutbound, &f, ast)))
+		ast_mutex_unlock(&p->lock);
 	return res;
 }
 
@@ -340,8 +342,8 @@ static int local_sendhtml(struct ast_channel *ast, int subclass, const char *dat
 	f.subclass = subclass;
 	f.data = (char *)data;
 	f.datalen = datalen;
-	res = local_queue_frame(p, isoutbound, &f, ast);
-	ast_mutex_unlock(&p->lock);
+	if (!(res = local_queue_frame(p, isoutbound, &f, ast)))
+		ast_mutex_unlock(&p->lock);
 	return res;
 }
 
@@ -430,7 +432,7 @@ static int local_hangup(struct ast_channel *ast)
 	struct ast_frame f = { AST_FRAME_CONTROL, AST_CONTROL_HANGUP };
 	struct local_pvt *cur, *prev=NULL;
 	struct ast_channel *ochan = NULL;
-	int glaredetect;
+	int glaredetect, res = 0;
 
 	if (!p)
 		return -1;
@@ -485,8 +487,9 @@ static int local_hangup(struct ast_channel *ast)
 		/* Need to actually hangup since there is no PBX */
 		ochan = p->chan;
 	else
-		local_queue_frame(p, isoutbound, &f, NULL);
-	ast_mutex_unlock(&p->lock);
+		res = local_queue_frame(p, isoutbound, &f, NULL);
+	if (!res)
+		ast_mutex_unlock(&p->lock);
 	if (ochan)
 		ast_hangup(ochan);
 	return 0;