[polari/wip/fmuellner/nickserv: 12/20] room: Emit ::identify-sent signal when detecting authbot identification

[Florian Müllner <fmuellner src gnome org>]

commit f6d0d078d2c82e8234df1d377db06b452d2cdf78
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue Aug 2 19:03:28 2016 +0200

    room: Emit ::identify-sent signal when detecting authbot identification
    
    We want to offer users that have their nickname registered with an
    authbot like NickServ the option to store the password and handle
    the identification automatically when connecting. For that we need
    to detect the "identify" command sent to a bot first - asking the
    user whether the password should be saved will be done differently
    depending on whether the command is actually send from the room's
    view or via a /msg command (or GNOME Shell's chat integration) instead,
    so handling the detection in a shared component as the room itself
    makes sense.
    In the future we might want to hide authbot channels entirely from the
    UI unless the user explicitly initiates the communication, in which
    case the detection/signal would be better off in the channel. However
    that would be more involved as it involves implementing a custom client
    factor, so this should do for now ...
    
    https://bugzilla.gnome.org/show_bug.cgi?id=709982

 src/lib/polari-room.c |   53 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+), 0 deletions(-)
---
diff --git a/src/lib/polari-room.c b/src/lib/polari-room.c
index 84dbcbe..b82a07b 100644
--- a/src/lib/polari-room.c
+++ b/src/lib/polari-room.c
@@ -45,6 +45,7 @@ struct _PolariRoomPrivate {
   guint self_contact_notify_id;
   guint invalidated_id;
   guint group_contacts_changed_id;
+  guint message_sent_id;
 
   TpProxySignalConnection *properties_changed_id;
 };
@@ -78,6 +79,8 @@ enum
 
   MEMBERS_CHANGED,
 
+  IDENTIFY_SENT,
+
   LAST_SIGNAL
 };
 
@@ -85,6 +88,8 @@ static guint signals[LAST_SIGNAL];
 
 static GRegex *color_code_regex = NULL;
 
+static GRegex *identify_message_regex = NULL;
+
 G_DEFINE_TYPE_WITH_PRIVATE (PolariRoom, polari_room, G_TYPE_OBJECT)
 
 static void polari_room_set_channel (PolariRoom *room, TpChannel *channel);
@@ -379,6 +384,42 @@ on_group_contacts_changed (TpChannel  *channel,
 }
 
 static void
+on_message_sent (TpTextChannel      *channel,
+                 TpSignalledMessage *message,
+                 guint               flags,
+                 char               *token,
+                 gpointer            user_data)
+{
+  PolariRoom *room = user_data;
+  PolariRoomPrivate *priv = room->priv;
+  GMatchInfo *match;
+  char *text, *stripped_text;
+
+  if (priv->type != TP_HANDLE_TYPE_CONTACT)
+    return;
+
+  text = tp_message_to_text (TP_MESSAGE (message), NULL);
+  stripped_text = g_strstrip (text);
+
+  if (G_UNLIKELY (identify_message_regex == NULL))
+    identify_message_regex = g_regex_new ("^identify (?:(\\w+) )?(\\S+)$",
+                                                G_REGEX_OPTIMIZE, 0, NULL);
+  if (g_regex_match (identify_message_regex, stripped_text, 0, &match))
+    {
+      char *username = g_match_info_fetch (match, 1);
+      char *password = g_match_info_fetch (match, 2);
+
+      g_signal_emit (room, signals[IDENTIFY_SENT], 0, username, password);
+
+      g_free (username);
+      g_free (password);
+    }
+
+  g_match_info_free (match);
+  g_free (text);
+}
+
+static void
 on_channel_invalidated (TpProxy  *channel,
                         guint     domain,
                         int       code,
@@ -575,6 +616,7 @@ polari_room_set_channel (PolariRoom *room,
   if (priv->channel)
     {
       g_signal_handler_disconnect (priv->channel, priv->group_contacts_changed_id);
+      g_signal_handler_disconnect (priv->channel, priv->message_sent_id);
       g_signal_handler_disconnect( priv->channel, priv->invalidated_id);
       g_signal_handler_disconnect (tp_channel_get_connection (priv->channel),
                                    priv->self_contact_notify_id);
@@ -610,6 +652,9 @@ polari_room_set_channel (PolariRoom *room,
       priv->group_contacts_changed_id =
         g_signal_connect (channel, "group-contacts-changed",
                           G_CALLBACK (on_group_contacts_changed), room);
+      priv->message_sent_id =
+        g_signal_connect ( channel, "message-sent",
+                          G_CALLBACK (on_message_sent), room);
       priv->invalidated_id =
         g_signal_connect (channel, "invalidated",
                           G_CALLBACK (on_channel_invalidated), room);
@@ -848,6 +893,14 @@ polari_room_class_init (PolariRoomClass *klass)
                   0,
                   NULL, NULL, NULL,
                   G_TYPE_NONE, 0);
+
+  signals[IDENTIFY_SENT] =
+    g_signal_new ("identify-sent",
+                  G_TYPE_FROM_CLASS (klass),
+                  G_SIGNAL_RUN_LAST,
+                  0,
+                  NULL, NULL, NULL,
+                  G_TYPE_NONE, 2, G_TYPE_STRING, G_TYPE_STRING);
 }
 
 static void