Merged revisions 41768,41827,41830,41880,41882,41989,42014,42054 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.2

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r41768 | file | 2006-09-01 18:49:07 -0400 (Fri, 01 Sep 2006) | 2 lines

Only wipe the redirected audio & video IP/port if it's specified, and trigger a reinvite.

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r41827 | bweschke | 2006-09-03 10:16:08 -0400 (Sun, 03 Sep 2006) | 3 lines

 Setting a retry of 0 is generally not a good idea and shouldn't be allowed. (#7574 - reported by regin)


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r41830 | bweschke | 2006-09-03 10:50:59 -0400 (Sun, 03 Sep 2006) | 3 lines

 Let's NOT spy on Zap/psuedo channels, mmmmmmmmk? 


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r41880 | bweschke | 2006-09-03 13:13:38 -0400 (Sun, 03 Sep 2006) | 3 lines

 Don't keep trying the same member in certain strategies when members of the queue are unavailable (#7278 - diLLec reported and patched) - This should have been patched here first and then merged into /trunk. My bad!


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r41882 | bweschke | 2006-09-03 13:38:22 -0400 (Sun, 03 Sep 2006) | 3 lines

 Make sure the forwarded channel inherits variables appropriately when we receive a call forward in the queue. (#7867 - raarts reported and patched)


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r41989 | oej | 2006-09-04 11:46:07 -0400 (Mon, 04 Sep 2006) | 2 lines

Don't kill the pvt before we have sent ACK on CANCEL (needs more testing before making a release)

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r42014 | qwell | 2006-09-05 12:27:46 -0400 (Tue, 05 Sep 2006) | 4 lines

Small typo in zapata.conf.sample

Reported by ppyy in 7881

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r42054 | file | 2006-09-05 16:02:48 -0400 (Tue, 05 Sep 2006) | 2 lines

Merge in last round of spy fixes. This should hopefully eliminate all the issues people have been seeing by distinctly separating what each component (core/spy) is responsible for. Core is responsible for adding a spy to a channel, feeding frames to the spy, removing the spy from a channel, and telling the spy to stop. Spy is responsible for reading frames in, and cleaning up after itself.

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git-svn-id: http://svn.digium.com/svn/asterisk/branches/1.2-netsec@42081 f38db490-d61c-443f-a65b-d21fe96a405b

1 files changed, 71 insertions, 40 deletions

diff --git a/channel.c b/channel.c
index 5a751fca3..327334390 100644
--- a/channel.c
+++ b/channel.c
@@ -1017,22 +1017,59 @@ int ast_channel_spy_add(struct ast_channel *chan, struct ast_channel_spy *spy)
 	return 0;
 }
 
+/* Clean up a channel's spy information */
+static void spy_cleanup(struct ast_channel *chan)
+{
+	if (AST_LIST_EMPTY(&chan->spies->list))
+		return;
+	if (chan->spies->read_translator.path)
+		ast_translator_free_path(chan->spies->read_translator.path);
+	if (chan->spies->write_translator.path)
+		ast_translator_free_path(chan->spies->write_translator.path);
+	free(chan->spies);
+	chan->spies = NULL;
+	return;
+}
+
+/* Detach a spy from it's channel */
+static void spy_detach(struct ast_channel_spy *spy, struct ast_channel *chan)
+{
+	ast_mutex_lock(&spy->lock);
+
+	/* We only need to poke them if they aren't already done */
+	if (spy->status != CHANSPY_DONE) {
+		spy->status = CHANSPY_STOP;
+		spy->chan = NULL;
+		if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE)
+			ast_cond_signal(&spy->trigger);
+	}
+	
+	/* Print it out while we still have a lock so the structure can't go away (if signalled above) */
+	ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n", spy->type, chan->name);
+
+	ast_mutex_unlock(&spy->lock);
+
+	return;
+}
+
 void ast_channel_spy_stop_by_type(struct ast_channel *chan, const char *type)
 {
-	struct ast_channel_spy *spy;
+	struct ast_channel_spy *spy = NULL;
 	
 	if (!chan->spies)
 		return;
 
-	AST_LIST_TRAVERSE(&chan->spies->list, spy, list) {
+	AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) {
 		ast_mutex_lock(&spy->lock);
 		if ((spy->type == type) && (spy->status == CHANSPY_RUNNING)) {
-			spy->status = CHANSPY_STOP;
-			if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE)
-				ast_cond_signal(&spy->trigger);
-		}
-		ast_mutex_unlock(&spy->lock);
+			ast_mutex_unlock(&spy->lock);
+			AST_LIST_REMOVE_CURRENT(&chan->spies->list, list);
+			spy_detach(spy, chan);
+		} else
+			ast_mutex_unlock(&spy->lock);
 	}
+	AST_LIST_TRAVERSE_SAFE_END
+	spy_cleanup(chan);
 }
 
 void ast_channel_spy_trigger_wait(struct ast_channel_spy *spy)
@@ -1049,65 +1086,59 @@ void ast_channel_spy_trigger_wait(struct ast_channel_spy *spy)
 
 void ast_channel_spy_remove(struct ast_channel *chan, struct ast_channel_spy *spy)
 {
-	struct ast_frame *f;
-
 	if (!chan->spies)
 		return;
 
 	AST_LIST_REMOVE(&chan->spies->list, spy, list);
 
-	ast_mutex_lock(&spy->lock);
+	spy_detach(spy, chan);
+	spy_cleanup(chan);
+}
 
-	spy->chan = NULL;
+void ast_channel_spy_free(struct ast_channel_spy *spy)
+{
+	struct ast_frame *f = NULL;
 
-	for (f = spy->read_queue.head; f; f = spy->read_queue.head) {
-		spy->read_queue.head = f->next;
-		ast_frfree(f);
-	}
+	if (spy->status == CHANSPY_DONE)
+		return;
+
+	/* Switch status to done in case we get called twice */
+	spy->status = CHANSPY_DONE;
+
+	/* Drop any frames in the queue */
 	for (f = spy->write_queue.head; f; f = spy->write_queue.head) {
 		spy->write_queue.head = f->next;
 		ast_frfree(f);
 	}
+	for (f = spy->read_queue.head; f; f= spy->read_queue.head) {
+		spy->read_queue.head = f->next;
+		ast_frfree(f);
+	}
 
+	/* Destroy the condition if in use */
 	if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE)
 		ast_cond_destroy(&spy->trigger);
 
-	ast_mutex_unlock(&spy->lock);
-
-	ast_log(LOG_DEBUG, "Spy %s removed from channel %s\n",
-		spy->type, chan->name);
+	/* Destroy our mutex since it is no longer in use */
+	ast_mutex_destroy(&spy->lock);
 
-	if (AST_LIST_EMPTY(&chan->spies->list)) {
-		if (chan->spies->read_translator.path)
-			ast_translator_free_path(chan->spies->read_translator.path);
-		if (chan->spies->write_translator.path)
-			ast_translator_free_path(chan->spies->write_translator.path);
-		free(chan->spies);
-		chan->spies = NULL;
-	}
+	return;
 }
 
 static void detach_spies(struct ast_channel *chan) 
 {
-	struct ast_channel_spy *spy;
+	struct ast_channel_spy *spy = NULL;
 
 	if (!chan->spies)
 		return;
 
-	/* Marking the spies as done is sufficient.  Chanspy or spy users will get the picture. */
-	AST_LIST_TRAVERSE(&chan->spies->list, spy, list) {
-		ast_mutex_lock(&spy->lock);
-		spy->chan = NULL;
-		if (spy->status == CHANSPY_RUNNING)
-			spy->status = CHANSPY_DONE;
-		if (ast_test_flag(spy, CHANSPY_TRIGGER_MODE) != CHANSPY_TRIGGER_NONE)
-			ast_cond_signal(&spy->trigger);
-		ast_mutex_unlock(&spy->lock);
+	AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list) {
+		AST_LIST_REMOVE_CURRENT(&chan->spies->list, list);
+		spy_detach(spy, chan);
 	}
+	AST_LIST_TRAVERSE_SAFE_END
 
-	AST_LIST_TRAVERSE_SAFE_BEGIN(&chan->spies->list, spy, list)
-		ast_channel_spy_remove(chan, spy);
-	AST_LIST_TRAVERSE_SAFE_END;
+	spy_cleanup(chan);
 }
 
 /*--- ast_softhangup_nolock: Softly hangup a channel, don't lock */