From 7e73a52505a4859a8146d7940e77659b874a2f45 Mon Sep 17 00:00:00 2001
From: Guillaume Desmottes <guillaume.desmottes@collabora.co.uk>
Date: Tue, 5 Jun 2012 12:39:30 +0200
Subject: [PATCH] telepathyClient: ignore invalidated channels

There is a race if a channel is invalidated during its preparation: the
'invalidated' signal is already emitted so the Shell will never notice.
We fix this by simply checking if the channel is already invalidated when
receiving it from telepathy-glib.

In the approving case, we reject the full ChannelDispatchOperation as we only
support approving one channel at the time.

https://bugzilla.gnome.org/show_bug.cgi?id=677457
---
 js/ui/telepathyClient.js | 11 +++++++++++
 src/shell-tp-client.c    |  6 ++++++
 src/shell-tp-client.h    |  2 ++
 3 files changed, 19 insertions(+)

diff --git a/js/ui/telepathyClient.js b/js/ui/telepathyClient.js
index 45638c61b..231c52c66 100644
--- a/js/ui/telepathyClient.js
+++ b/js/ui/telepathyClient.js
@@ -132,6 +132,9 @@ const Client = new Lang.Class({
             let channel = channels[i];
             let [targetHandle, targetHandleType] = channel.get_handle();
 
+            if (Shell.is_channel_invalidated(channel))
+              continue;
+
             /* Only observe contact text channels */
             if ((!(channel instanceof Tp.TextChannel)) ||
                targetHandleType != Tp.HandleType.CONTACT)
@@ -181,6 +184,9 @@ const Client = new Lang.Class({
                 continue;
             }
 
+            if (Shell.is_channel_invalidated(channel))
+              continue;
+
             // 'notify' will be true when coming from an actual HandleChannels
             // call, and not when from a successful Claim call. The point is
             // we don't want to notify for a channel we just claimed which
@@ -231,6 +237,11 @@ const Client = new Lang.Class({
         let channel = channels[0];
         let chanType = channel.get_channel_type();
 
+        if (Shell.is_channel_invalidated(channel)) {
+            Shell.decline_dispatch_op(context, 'Channel is invalidated');
+            return;
+        }
+
         if (chanType == Tp.IFACE_CHANNEL_TYPE_TEXT)
             this._approveTextChannel(account, conn, channel, dispatchOp, context);
         else if (chanType == Tp.IFACE_CHANNEL_TYPE_CALL)
diff --git a/src/shell-tp-client.c b/src/shell-tp-client.c
index d64129e65..8a20e6826 100644
--- a/src/shell-tp-client.c
+++ b/src/shell-tp-client.c
@@ -369,3 +369,9 @@ shell_decline_dispatch_op (TpAddDispatchOperationContext *context,
   tp_add_dispatch_operation_context_fail (context, error);
   g_error_free (error);
 }
+
+/* gjs doesn't cope with tp_proxy_get_invalidated() returning a GError */
+gboolean shell_is_channel_invalidated (TpChannel *channel)
+{
+  return tp_proxy_get_invalidated (channel) != NULL;
+}
diff --git a/src/shell-tp-client.h b/src/shell-tp-client.h
index 82094a073..e2045f37c 100644
--- a/src/shell-tp-client.h
+++ b/src/shell-tp-client.h
@@ -112,5 +112,7 @@ void shell_get_contact_events (TplLogManager *log_manager,
 void shell_decline_dispatch_op (TpAddDispatchOperationContext *context,
                                 const gchar *message);
 
+gboolean shell_is_channel_invalidated (TpChannel *channel);
+
 G_END_DECLS
 #endif /* __SHELL_TP_CLIENT_H__ */