Fix "cancel answered elsewhere" through app_queue with members in chan_local.

Also, implement a private cause code (as suggested by Tilghman). This works with
chan_sip, but doesn't propagate through chan_local.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@172318 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_dial.c

@@ -568,8 +568,12 @@ static void hanguptree(struct chanlist *outgoing, struct ast_channel *exception,
 	while (outgoing) {
 		/* Hangup any existing lines we have open */
 		if (outgoing->chan && (outgoing->chan != exception)) {
-			if (answered_elsewhere)
+			if (answered_elsewhere) {
+				/* The flag is used for local channel inheritance and stuff */
 				ast_set_flag(outgoing->chan, AST_FLAG_ANSWERED_ELSEWHERE);
+				/* This is for the channel drivers */
+				outgoing->chan->hangupcause = AST_CAUSE_ANSWERED_ELSEWHERE;
+			}
 			ast_hangup(outgoing->chan);
 		}
 		oo = outgoing;
@@ -1567,6 +1571,7 @@ static int dial_exec_full(struct ast_channel *chan, void *data, struct ast_flags
 		goto done;
 	}
 
+
 	if (ast_test_flag64(&opts, OPT_OPERMODE)) {
 		opermode = ast_strlen_zero(opt_args[OPT_ARG_OPERMODE]) ? 1 : atoi(opt_args[OPT_ARG_OPERMODE]);
 		ast_verb(3, "Setting operator services mode to %d.\n", opermode);
@@ -1780,6 +1785,14 @@ static int dial_exec_full(struct ast_channel *chan, void *data, struct ast_flags
 		/* If we have an outbound group, set this peer channel to it */
 		if (outbound_group)
 			ast_app_group_set_channel(tc, outbound_group);
+		/* If the calling channel has the ANSWERED_ELSEWHERE flag set, inherit it. This is to support local channels */
+		if (ast_test_flag(chan, AST_FLAG_ANSWERED_ELSEWHERE))
+			ast_set_flag(tc, AST_FLAG_ANSWERED_ELSEWHERE);
+
+		/* Check if we're forced by configuration */
+		if (ast_test_flag64(&opts, OPT_CANCEL_ELSEWHERE))
+			 ast_set_flag(tc, AST_FLAG_ANSWERED_ELSEWHERE);
+
 
 		/* Inherit context and extension */
 		ast_string_field_set(tc, dialcontext, ast_strlen_zero(chan->macrocontext) ? chan->context : chan->macrocontext);

apps/app_queue.c

@@ -646,6 +646,7 @@ struct queue_ent {
 	int linwrapped;                        /*!< Is the linpos wrapped? */
 	time_t start;                          /*!< When we started holding */
 	time_t expire;                         /*!< When this entry should expire (time out of queue) */
+	int cancel_answered_elsewhere;	       /*!< Whether we should force the CAE flag on this call (C) option*/
 	struct ast_channel *chan;              /*!< Our channel */
 	AST_LIST_HEAD_NOLOCK(,penalty_rule) qe_rules; /*!< Local copy of the queue's penalty rules */
 	struct penalty_rule *pr;               /*!< Pointer to the next penalty rule to implement */
@@ -2412,6 +2413,9 @@ static int ring_entry(struct queue_ent *qe, struct callattempt *tmp, int *busies
 		return 0;
 	}
 	
+	if (qe->cancel_answered_elsewhere) {
+		ast_set_flag(tmp->chan, AST_FLAG_ANSWERED_ELSEWHERE);
+	}
 	tmp->chan->appl = "AppQueue";
 	tmp->chan->data = "(Outgoing Line)";
 	memset(&tmp->chan->whentohangup, 0, sizeof(tmp->chan->whentohangup));
@@ -3484,7 +3488,6 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 	struct ao2_iterator memi;
 	struct ast_datastore *datastore, *transfer_ds;
 	struct queue_end_bridge *queue_end_bridge = NULL;
-	int cancel_answered_elsewhere = 0;
 
 	ast_channel_lock(qe->chan);
 	datastore = ast_channel_datastore_find(qe->chan, &dialed_interface_info, NULL);
@@ -3553,7 +3556,7 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 			ast_set_flag(&(bridge_config.features_caller), AST_FEATURE_AUTOMIXMON);
 			break;
 		case 'C':
-			cancel_answered_elsewhere = 1;
+			qe->cancel_answered_elsewhere = 1;
 			break;
 
 		}
@@ -3571,6 +3574,13 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 		queue_ref(qe->parent);
 	}
 
+	/* if the calling channel has the ANSWERED_ELSEWHERE flag set, make sure this is inherited. 
+		(this is mainly to support chan_local)
+	*/
+	if (ast_test_flag(qe->chan, AST_FLAG_ANSWERED_ELSEWHERE)) {
+		qe->cancel_answered_elsewhere = 1;
+	}
+
 	/* Hold the lock while we setup the outgoing calls */
 	if (use_weight)
 		ao2_lock(queues);
@@ -3751,7 +3761,7 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 		member = lpeer->member;
 		/* Increment the refcount for this member, since we're going to be using it for awhile in here. */
 		ao2_ref(member, 1);
-		hangupcalls(outgoing, peer, cancel_answered_elsewhere);
+		hangupcalls(outgoing, peer, qe->cancel_answered_elsewhere);
 		outgoing = NULL;
 		if (announce || qe->parent->reportholdtime || qe->parent->memberdelay) {
 			int res2;
@@ -4154,7 +4164,7 @@ static int try_calling(struct queue_ent *qe, const char *options, char *announce
 		ao2_ref(member, -1);
 	}
 out:
-	hangupcalls(outgoing, NULL, cancel_answered_elsewhere);
+	hangupcalls(outgoing, NULL, qe->cancel_answered_elsewhere);
 
 	return res;
 }

channels/chan_local.c

@@ -532,6 +532,11 @@ static int local_call(struct ast_channel *ast, char *dest, int timeout)
 		return -1;
 	}
 
+	/* Make sure we inherit the ANSWERED_ELSEWHERE flag if it's set on the queue/dial call request in the dialplan */
+	if (ast_test_flag(ast, AST_FLAG_ANSWERED_ELSEWHERE)) {
+		ast_set_flag(p->chan, AST_FLAG_ANSWERED_ELSEWHERE);
+	}
+
 	/* copy the channel variables from the incoming channel to the outgoing channel */
 	/* Note that due to certain assumptions, they MUST be in the same order */
 	AST_LIST_TRAVERSE(&p->owner->varshead, varptr, entries) {
@@ -567,9 +572,14 @@ static int local_hangup(struct ast_channel *ast)
 
 	ast_mutex_lock(&p->lock);
 
-	if (p->chan && ast_test_flag(ast, AST_FLAG_ANSWERED_ELSEWHERE)) 
-		ast_set_flag(p->chan, AST_FLAG_ANSWERED_ELSEWHERE);
 	isoutbound = IS_OUTBOUND(ast, p);
+
+	if (p->chan && ast_test_flag(ast, AST_FLAG_ANSWERED_ELSEWHERE)) {
+		ast_set_flag(p->chan, AST_FLAG_ANSWERED_ELSEWHERE);
+		ast_debug(2, "This local call has the ANSWERED_ELSEWHERE flag set.\n");
+	}
+	/* Make sure the hangupcause follows down the chain of channels */
+
 	if (isoutbound) {
 		const char *status = pbx_builtin_getvar_helper(p->chan, "DIALSTATUS");
 		if ((status) && (p->owner)) {
@@ -600,6 +610,7 @@ static int local_hangup(struct ast_channel *ast)
 			DEADLOCK_AVOIDANCE(&p->lock);
 		}
 		if (p->chan) {
+			p->chan->hangupcause = ast->hangupcause;
 			ast_queue_hangup(p->chan);
 			ast_channel_unlock(p->chan);
 		}

channels/chan_sip.c

@@ -5509,8 +5509,11 @@ static int sip_hangup(struct ast_channel *ast)
 		ast_debug(1, "Asked to hangup channel that was not connected\n");
 		return 0;
 	}
-	if (ast_test_flag(ast, AST_FLAG_ANSWERED_ELSEWHERE)) {
+	if (ast_test_flag(ast, AST_FLAG_ANSWERED_ELSEWHERE) || ast->hangupcause == AST_CAUSE_ANSWERED_ELSEWHERE) {
 		ast_debug(1, "This call was answered elsewhere");
+		if (ast->hangupcause == AST_CAUSE_ANSWERED_ELSEWHERE) {
+			ast_debug(1, "####### It's the cause code, buddy. The cause code!!!\n");
+		}
 		append_history(p, "Cancel", "Call answered elsewhere");
 		p->answered_elsewhere = TRUE;
 	}

include/asterisk/causes.h

@@ -81,6 +81,10 @@ specification:
 	- AST_CAUSE_PROTOCOL_ERROR			111
 	- AST_CAUSE_INTERWORKING				127
 
+The range 128-255 is private cause codes. Our private causes are:
+
+	- AST_CAUSE_ANSWERED_ELSEWHERE			200
+
 For more information:
 - \ref app_dial.c
 */
@@ -136,6 +140,9 @@ For more information:
 #define AST_CAUSE_PROTOCOL_ERROR			111
 #define AST_CAUSE_INTERWORKING				127
 
+/* Private Cause codes for Asterisk */
+#define AST_CAUSE_ANSWERED_ELSEWHERE			200
+
 /* Special Asterisk aliases */
 #define AST_CAUSE_BUSY 					AST_CAUSE_USER_BUSY
 #define AST_CAUSE_FAILURE 				AST_CAUSE_NETWORK_OUT_OF_ORDER