path: root/libempathy/empathy-tp-contact-list.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007 Xavier Claessens <xclaesse@gmail.com>
 * Copyright (C) 2007 Collabora Ltd.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; if not, write to the
 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <string.h>

#include <libtelepathy/tp-helpers.h>
#include <libtelepathy/tp-conn.h>
#include <libtelepathy/tp-chan.h>
#include <libtelepathy/tp-chan-type-contact-list-gen.h>
#include <libtelepathy/tp-conn-iface-aliasing-gen.h>
#include <libtelepathy/tp-conn-iface-presence-gen.h>
#include <libtelepathy/tp-conn-iface-avatars-gen.h>

#include "empathy-tp-contact-list.h"
#include "empathy-contact-list.h"
#include "gossip-telepathy-group.h"
#include "gossip-debug.h"
#include "gossip-utils.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
               EMPATHY_TYPE_TP_CONTACT_LIST, EmpathyTpContactListPriv))

#define DEBUG_DOMAIN "TpContactList"
#define MAX_AVATAR_REQUESTS 10

struct _EmpathyTpContactListPriv {
    TpConn               *tp_conn;
    McAccount            *account;
    MissionControl       *mc;
    GossipContact        *user_contact;
    gboolean              setup;

    GossipTelepathyGroup *publish;
    GossipTelepathyGroup *subscribe;

    GHashTable           *groups;
    GHashTable           *contacts;
    GList                *local_pending;

    DBusGProxy           *aliasing_iface;
    DBusGProxy           *avatars_iface;
    DBusGProxy           *presence_iface;

    GList                *avatar_requests_queue;
};

typedef enum {
    TP_CONTACT_LIST_TYPE_PUBLISH,
    TP_CONTACT_LIST_TYPE_SUBSCRIBE,
    TP_CONTACT_LIST_TYPE_UNKNOWN,
    TP_CONTACT_LIST_TYPE_COUNT
} TpContactListType;

typedef struct {
    guint  handle;
    GList *new_groups;
} TpContactListData;

typedef struct {
    EmpathyTpContactList *list;
    guint                 handle;
} TpContactListAvatarRequestData;

typedef struct {
    EmpathyTpContactList *list;
    guint                *handles;
} TpContactListAliasesRequestData;

static void                   empathy_tp_contact_list_class_init       (EmpathyTpContactListClass       *klass);
static void                   tp_contact_list_iface_init               (EmpathyContactListIface         *iface);
static void                   empathy_tp_contact_list_init             (EmpathyTpContactList            *list);
static void                   tp_contact_list_finalize                 (GObject                         *object);
static void                   tp_contact_list_finalize_proxies         (EmpathyTpContactList            *list);
static void                   tp_contact_list_setup                    (EmpathyContactList              *list);
static GossipContact *        tp_contact_list_find                     (EmpathyContactList              *list,
                                    const gchar                     *id);
static void                   tp_contact_list_add                      (EmpathyContactList              *list,
                                    GossipContact                   *contact,
                                    const gchar                     *message);
static void                   tp_contact_list_remove                   (EmpathyContactList              *list,
                                    GossipContact                   *contact,
                                    const gchar                     *message);
static GList *                tp_contact_list_get_members              (EmpathyContactList              *list);
static GList *                tp_contact_list_get_local_pending        (EmpathyContactList              *list);
static void                   tp_contact_list_remove_local_pending     (EmpathyTpContactList            *list,
                                    GossipContact                   *contact);
static void                   tp_contact_list_contact_removed_foreach  (guint                            handle,
                                    GossipContact                   *contact,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_destroy_cb               (DBusGProxy                      *proxy,
                                    EmpathyTpContactList            *list);
static gboolean               tp_contact_list_find_foreach             (guint                            handle,
                                    GossipContact                   *contact,
                                    gchar                           *id);
static void                   tp_contact_list_newchannel_cb            (DBusGProxy                      *proxy,
                                    const gchar                     *object_path,
                                    const gchar                     *channel_type,
                                    TelepathyHandleType              handle_type,
                                    guint                            channel_handle,
                                    gboolean                         suppress_handle,
                                    EmpathyTpContactList            *list);
static TpContactListType      tp_contact_list_get_type                 (EmpathyTpContactList            *list,
                                    GossipTelepathyGroup            *group);
static void                   tp_contact_list_added_cb                 (GossipTelepathyGroup            *group,
                                    GArray                          *handles,
                                    guint                            actor_handle,
                                    guint                            reason,
                                    const gchar                     *message,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_removed_cb               (GossipTelepathyGroup            *group,
                                    GArray                          *handles,
                                    guint                            actor_handle,
                                    guint                            reason,
                                    const gchar                     *message,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_pending_cb               (GossipTelepathyGroup            *group,
                                    GArray                          *handles,
                                    guint                            actor_handle,
                                    guint                            reason,
                                    const gchar                     *message,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_groups_updated_cb        (GossipContact                   *contact,
                                    GParamSpec                      *param,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_name_updated_cb          (GossipContact                   *contact,
                                    GParamSpec                      *param,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_update_groups_foreach    (gchar                           *object_path,
                                    GossipTelepathyGroup            *group,
                                    TpContactListData               *data);
static GossipTelepathyGroup * tp_contact_list_get_group                (EmpathyTpContactList            *list,
                                    const gchar                     *name);
static gboolean               tp_contact_list_find_group               (gchar                           *key,
                                    GossipTelepathyGroup            *group,
                                    gchar                           *group_name);
static void                   tp_contact_list_get_groups_foreach       (gchar                           *key,
                                    GossipTelepathyGroup            *group,
                                    GList                          **groups);
static void                   tp_contact_list_group_channel_closed_cb  (TpChan                          *channel,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_group_members_added_cb   (GossipTelepathyGroup            *group,
                                    GArray                          *members,
                                    guint                            actor_handle,
                                    guint                            reason,
                                    const gchar                     *message,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_group_members_removed_cb (GossipTelepathyGroup            *group,
                                    GArray                          *members,
                                    guint                            actor_handle,
                                    guint                            reason,
                                    const gchar                     *message,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_get_members_foreach      (guint                            handle,
                                    GossipContact                   *contact,
                                    GList                          **contacts);
static void                   tp_contact_list_get_info                 (EmpathyTpContactList            *list,
                                    GArray                          *handles);
static void                   tp_contact_list_request_avatar           (EmpathyTpContactList            *list,
                                    guint                            handle);
static void                   tp_contact_list_start_avatar_requests    (EmpathyTpContactList            *list);
static void                   tp_contact_list_avatar_update_cb         (DBusGProxy                      *proxy,
                                    guint                            handle,
                                    gchar                           *new_token,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_request_avatar_cb        (DBusGProxy                      *proxy,
                                    GArray                          *avatar_data,
                                    gchar                           *mime_type,
                                    GError                          *error,
                                    TpContactListAvatarRequestData  *data);
static void                   tp_contact_list_aliases_update_cb        (DBusGProxy                      *proxy,
                                    GPtrArray                       *handlers,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_request_aliases_cb       (DBusGProxy                      *proxy,
                                    gchar                          **contact_names,
                                    GError                          *error,
                                    TpContactListAliasesRequestData *data);
static void                   tp_contact_list_presence_update_cb       (DBusGProxy                      *proxy,
                                    GHashTable                      *handle_table,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_parse_presence_foreach   (guint                            handle,
                                    GValueArray                     *presence_struct,
                                    EmpathyTpContactList            *list);
static void                   tp_contact_list_presences_table_foreach  (const gchar                     *state_str,
                                    GHashTable                      *presences_table,
                                    GossipPresence                 **presence);
static void                   tp_contact_list_status_changed_cb        (MissionControl                  *mc,
                                    TelepathyConnectionStatus        status,
                                    McPresence                       presence,
                                    TelepathyConnectionStatusReason  reason,
                                    const gchar                     *unique_name,
                                    EmpathyTpContactList            *list);

enum {
    DESTROY,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];
static guint n_avatar_requests = 0;

G_DEFINE_TYPE_WITH_CODE (EmpathyTpContactList, empathy_tp_contact_list, G_TYPE_OBJECT,
             G_IMPLEMENT_INTERFACE (EMPATHY_TYPE_CONTACT_LIST,
                        tp_contact_list_iface_init));

static void
empathy_tp_contact_list_class_init (EmpathyTpContactListClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = tp_contact_list_finalize;

    signals[DESTROY] =
        g_signal_new ("destroy",
                  G_TYPE_FROM_CLASS (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  g_cclosure_marshal_VOID__VOID,
                  G_TYPE_NONE,
                  0);

    g_type_class_add_private (object_class, sizeof (EmpathyTpContactListPriv));
}

static void
tp_contact_list_iface_init (EmpathyContactListIface *iface)
{
    iface->setup             = tp_contact_list_setup;
    iface->find              = tp_contact_list_find;
    iface->add               = tp_contact_list_add;
    iface->remove            = tp_contact_list_remove;
    iface->get_members       = tp_contact_list_get_members;
    iface->get_local_pending = tp_contact_list_get_local_pending;
}

static void
empathy_tp_contact_list_init (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);

    priv->groups = g_hash_table_new_full (g_str_hash,
                          g_str_equal,
                          (GDestroyNotify) g_free,
                          (GDestroyNotify) g_object_unref);
    priv->contacts = g_hash_table_new_full (g_direct_hash,
                        g_direct_equal,
                        NULL,
                        (GDestroyNotify) g_object_unref);
}

static void
tp_contact_list_finalize (GObject *object)
{
    EmpathyTpContactListPriv *priv;
    EmpathyTpContactList     *list;

    list = EMPATHY_TP_CONTACT_LIST (object);
    priv = GET_PRIV (list);

    gossip_debug (DEBUG_DOMAIN, "finalize: %p", object);

    dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->mc),
                    "AccountStatusChanged",
                    G_CALLBACK (tp_contact_list_status_changed_cb),
                    list);

    tp_contact_list_finalize_proxies (list);

    if (priv->tp_conn) {
        g_object_unref (priv->tp_conn);
    }
    if (priv->subscribe) {
        g_object_unref (priv->subscribe);
    }
    if (priv->publish) {
        g_object_unref (priv->publish);
    }

    g_object_unref (priv->account);
    g_object_unref (priv->user_contact);
    g_object_unref (priv->mc);
    g_hash_table_destroy (priv->groups);
    g_hash_table_destroy (priv->contacts);

    g_list_foreach (priv->local_pending, (GFunc) empathy_contact_list_info_free, NULL);
    g_list_free (priv->local_pending);

    G_OBJECT_CLASS (empathy_tp_contact_list_parent_class)->finalize (object);
}

EmpathyTpContactList *
empathy_tp_contact_list_new (McAccount *account)
{
    EmpathyTpContactListPriv *priv;
    EmpathyTpContactList     *list;
    MissionControl           *mc;
    guint                     handle;
    GError                   *error = NULL;

    g_return_val_if_fail (MC_IS_ACCOUNT (account), NULL);

    mc = gossip_mission_control_new ();

    if (mission_control_get_connection_status (mc, account, NULL) != 0) {
        /* The account is not connected, nothing to do. */
        return NULL;
    }

    list = g_object_new (EMPATHY_TYPE_TP_CONTACT_LIST, NULL);
    priv = GET_PRIV (list);

    priv->tp_conn = mission_control_get_connection (mc, account, NULL);
    priv->account = g_object_ref (account);
    priv->mc = mc;

    g_signal_connect (priv->tp_conn, "destroy",
              G_CALLBACK (tp_contact_list_destroy_cb),
              list);
    dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->mc),
                     "AccountStatusChanged",
                     G_CALLBACK (tp_contact_list_status_changed_cb),
                     list, NULL);

    priv->aliasing_iface = tp_conn_get_interface (priv->tp_conn,
                              TELEPATHY_CONN_IFACE_ALIASING_QUARK);
    priv->avatars_iface = tp_conn_get_interface (priv->tp_conn,
                             TELEPATHY_CONN_IFACE_AVATARS_QUARK);
    priv->presence_iface = tp_conn_get_interface (priv->tp_conn,
                              TELEPATHY_CONN_IFACE_PRESENCE_QUARK);

    if (priv->aliasing_iface) {
        dbus_g_proxy_connect_signal (priv->aliasing_iface,
                         "AliasesChanged",
                         G_CALLBACK (tp_contact_list_aliases_update_cb),
                         list, NULL);
    }

    if (priv->avatars_iface) {
        dbus_g_proxy_connect_signal (priv->avatars_iface,
                         "AvatarUpdated",
                         G_CALLBACK (tp_contact_list_avatar_update_cb),
                         list, NULL);
    }

    if (priv->presence_iface) {
        dbus_g_proxy_connect_signal (priv->presence_iface,
                         "PresenceUpdate",
                         G_CALLBACK (tp_contact_list_presence_update_cb),
                         list, NULL);
    }

    /* Get our own handle and contact */
    if (!tp_conn_get_self_handle (DBUS_G_PROXY (priv->tp_conn),
                      &handle, &error)) {
        gossip_debug (DEBUG_DOMAIN, "GetSelfHandle Error: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
    } else {
        /* FIXME: this adds the handle to the roster */
        priv->user_contact = empathy_tp_contact_list_get_from_handle (list, handle);
    }

    return list;
}

static void
tp_contact_list_setup (EmpathyContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GPtrArray                *channels;
    GError                   *error = NULL;
    guint                     i;

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list));

    priv = GET_PRIV (list);

    gossip_debug (DEBUG_DOMAIN, "setup contact list: %p", list);

    priv->setup = TRUE;
    dbus_g_proxy_connect_signal (DBUS_G_PROXY (priv->tp_conn), "NewChannel",
                     G_CALLBACK (tp_contact_list_newchannel_cb),
                     list, NULL);

    /* Get existing channels */
    if (!tp_conn_list_channels (DBUS_G_PROXY (priv->tp_conn),
                    &channels,
                    &error)) {
        gossip_debug (DEBUG_DOMAIN,
                  "Failed to get list of open channels: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        return;
    }

    for (i = 0; channels->len > i; i++) {
        GValueArray         *chan_struct;
        const gchar         *object_path;
        const gchar         *chan_iface;
        TelepathyHandleType  handle_type;
        guint                handle;

        chan_struct = g_ptr_array_index (channels, i);
        object_path = g_value_get_boxed (g_value_array_get_nth (chan_struct, 0));
        chan_iface = g_value_get_string (g_value_array_get_nth (chan_struct, 1));
        handle_type = g_value_get_uint (g_value_array_get_nth (chan_struct, 2));
        handle = g_value_get_uint (g_value_array_get_nth (chan_struct, 3));

        tp_contact_list_newchannel_cb (DBUS_G_PROXY (priv->tp_conn),
                           object_path, chan_iface,
                           handle_type, handle,
                           FALSE,
                           EMPATHY_TP_CONTACT_LIST (list));

        g_value_array_free (chan_struct);
    }

    g_ptr_array_free (channels, TRUE);
}

static GossipContact *
tp_contact_list_find (EmpathyContactList *list,
              const gchar        *id)
{
    EmpathyTpContactListPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);

    return g_hash_table_find (priv->contacts,
                  (GHRFunc) tp_contact_list_find_foreach,
                  (gchar*) id);
}

static void
tp_contact_list_add (EmpathyContactList *list,
             GossipContact      *contact,
             const gchar        *message)
{
    EmpathyTpContactListPriv *priv;
    guint                     handle;

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list));

    priv = GET_PRIV (list);

    handle = gossip_contact_get_handle (contact);
    gossip_telepathy_group_add_member (priv->subscribe, handle, message);
    gossip_telepathy_group_add_member (priv->publish, handle, message);
}

static void
tp_contact_list_remove (EmpathyContactList *list,
            GossipContact      *contact,
            const gchar        *message)
{
    EmpathyTpContactListPriv *priv;
    guint                     handle;

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list));

    priv = GET_PRIV (list);

    handle = gossip_contact_get_handle (contact);
    gossip_telepathy_group_remove_member (priv->subscribe, handle, message);
    gossip_telepathy_group_remove_member (priv->publish, handle, message);
}

static GList *
tp_contact_list_get_members (EmpathyContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *contacts = NULL;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);

    g_hash_table_foreach (priv->contacts,
                  (GHFunc) tp_contact_list_get_members_foreach,
                  &contacts);

    return contacts;
}

static GList *
tp_contact_list_get_local_pending (EmpathyContactList *list)
{
    EmpathyTpContactListPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);

    return g_list_copy (priv->local_pending);
}

McAccount *
empathy_tp_contact_list_get_account (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);

    return priv->account;
}

GossipContact *
empathy_tp_contact_list_get_user (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);
    
    return priv->user_contact;
}

GossipContact *
empathy_tp_contact_list_get_from_id (EmpathyTpContactList *list,
                     const gchar          *id)
{
    EmpathyTpContactListPriv *priv;
    GossipContact            *contact;
    const gchar              *contact_ids[] = {id, NULL};
    GArray                   *handles;
    guint                     handle;
    GError                   *error = NULL;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);
    g_return_val_if_fail (id != NULL, NULL);
    
    priv = GET_PRIV (list);

    contact = tp_contact_list_find (EMPATHY_CONTACT_LIST (list), id);
    if (contact) {
        return g_object_ref (contact);
    }

    /* The id is unknown, requests a new handle */
    if (!tp_conn_request_handles (DBUS_G_PROXY (priv->tp_conn),
                      TP_HANDLE_TYPE_CONTACT,
                      contact_ids,
                      &handles, &error)) {
        gossip_debug (DEBUG_DOMAIN, 
                  "RequestHandle for %s failed: %s", id,
                  error ? error->message : "No error given");
        g_clear_error (&error);
        return NULL;
    }

    handle = g_array_index(handles, guint, 0);
    g_array_free (handles, TRUE);

    return empathy_tp_contact_list_get_from_handle (list, handle);
}

GossipContact *
empathy_tp_contact_list_get_from_handle (EmpathyTpContactList *list,
                     guint                 handle)
{
    GossipContact *contact;
    GArray        *handles;
    GList         *contacts;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    handles = g_array_new (FALSE, FALSE, sizeof (guint));
    g_array_append_val (handles, handle);

    contacts = empathy_tp_contact_list_get_from_handles (list, handles);
    g_array_free (handles, TRUE);

    if (!contacts) {
        return NULL;
    }

    contact = contacts->data;
    g_list_free (contacts);

    return contact;
}

GList *
empathy_tp_contact_list_get_from_handles (EmpathyTpContactList *list,
                      GArray               *handles)
{
    EmpathyTpContactListPriv  *priv;
    gchar                    **handles_names;
    gchar                    **id;
    GArray                    *new_handles;
    GList                     *contacts = NULL;
    guint                      i;
    GError                    *error = NULL;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);
    g_return_val_if_fail (handles != NULL, NULL);

    priv = GET_PRIV (list);

    /* Search all handles we already have */
    new_handles = g_array_new (FALSE, FALSE, sizeof (guint));
    for (i = 0; i < handles->len; i++) {
        GossipContact *contact;
        guint          handle;

        handle = g_array_index (handles, guint, i);

        if (handle == 0) {
            continue;
        }

        contact = g_hash_table_lookup (priv->contacts,
                           GUINT_TO_POINTER (handle));

        if (contact) {
            contacts = g_list_prepend (contacts,
                           g_object_ref (contact));
        } else {
            g_array_append_val (new_handles, handle);
        }
    }

    if (new_handles->len == 0) {
        g_array_free (new_handles, TRUE);
        return contacts;
    }

    /* Holds all handles we don't have yet.
     * FIXME: We should release them at some point. */
    if (!tp_conn_hold_handles (DBUS_G_PROXY (priv->tp_conn),
                   TP_HANDLE_TYPE_CONTACT,
                   new_handles, &error)) {
        gossip_debug (DEBUG_DOMAIN, 
                  "HoldHandles Error: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        g_array_free (new_handles, TRUE);
        return contacts;
    }

    /* Get the IDs of all new handles */
    if (!tp_conn_inspect_handles (DBUS_G_PROXY (priv->tp_conn),
                      TP_HANDLE_TYPE_CONTACT,
                      new_handles,
                      &handles_names,
                      &error)) {
        gossip_debug (DEBUG_DOMAIN, 
                  "InspectHandle Error: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        g_array_free (new_handles, TRUE);
        return contacts;
    }

    /* Create contact objects */
    for (i = 0, id = handles_names; *id && i < new_handles->len; id++, i++) {
        GossipContact *contact;
        guint          handle;

        handle = g_array_index (new_handles, guint, i);
        contact = g_object_new (GOSSIP_TYPE_CONTACT,
                    "account", priv->account,
                    "id", *id,
                    "handle", handle,
                    NULL);

        if (!priv->presence_iface) {
            GossipPresence *presence;

            /* We have no presence iface, set default presence
             * to available */
            presence = gossip_presence_new_full (MC_PRESENCE_AVAILABLE,
                                 NULL);

            gossip_contact_set_presence (contact, presence);
            g_object_unref (presence);
        }

        g_signal_connect (contact, "notify::groups",
                  G_CALLBACK (tp_contact_list_groups_updated_cb),
                  list);
        g_signal_connect (contact, "notify::name",
                  G_CALLBACK (tp_contact_list_name_updated_cb),
                  list);

        gossip_debug (DEBUG_DOMAIN, "new contact created: %s (%d)",
                  *id, handle);

        g_hash_table_insert (priv->contacts,
                     GUINT_TO_POINTER (handle),
                     contact);

        contacts = g_list_prepend (contacts, g_object_ref (contact));
    }

    tp_contact_list_get_info (list, new_handles);

    g_array_free (new_handles, TRUE);
    g_strfreev (handles_names);

    return contacts;
}

void
empathy_tp_contact_list_rename_group (EmpathyTpContactList *list,
                      const gchar          *old_group,
                      const gchar          *new_group)
{
    EmpathyTpContactListPriv *priv;
    GossipTelepathyGroup     *group;
    GArray                   *members;

    g_return_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list));
    g_return_if_fail (old_group != NULL);
    g_return_if_fail (new_group != NULL);

    priv = GET_PRIV (list);

    group = g_hash_table_find (priv->groups,
                   (GHRFunc) tp_contact_list_find_group,
                   (gchar*) old_group);
    if (!group) {
        /* The group doesn't exists on this account */
        return;
    }

    gossip_debug (DEBUG_DOMAIN, "rename group %s to %s", group, new_group);

    /* Remove all members from the old group */
    members = gossip_telepathy_group_get_members (group);
    gossip_telepathy_group_remove_members (group, members, "");
    tp_contact_list_group_members_removed_cb (group, members, 
                           0, 
                           TP_CHANNEL_GROUP_CHANGE_REASON_NONE, 
                           NULL, list);
    g_hash_table_remove (priv->groups,
                 gossip_telepathy_group_get_object_path (group));

    /* Add all members to the new group */
    group = tp_contact_list_get_group (list, new_group);
    if (group) {
        gossip_telepathy_group_add_members (group, members, "");
    }
}

GList *
empathy_tp_contact_list_get_groups (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *groups = NULL;

    g_return_val_if_fail (EMPATHY_IS_TP_CONTACT_LIST (list), NULL);

    priv = GET_PRIV (list);

    g_hash_table_foreach (priv->groups,
                  (GHFunc) tp_contact_list_get_groups_foreach,
                  &groups);

    groups = g_list_sort (groups, (GCompareFunc) strcmp);

    return groups;
}

static void
tp_contact_list_finalize_proxies (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);

    if (priv->tp_conn) {
        g_signal_handlers_disconnect_by_func (priv->tp_conn,
                              tp_contact_list_destroy_cb,
                              list);
        dbus_g_proxy_disconnect_signal (DBUS_G_PROXY (priv->tp_conn), "NewChannel",
                        G_CALLBACK (tp_contact_list_newchannel_cb),
                        list);
    }

    if (priv->aliasing_iface) {
        dbus_g_proxy_disconnect_signal (priv->aliasing_iface,
                        "AliasesChanged",
                        G_CALLBACK (tp_contact_list_aliases_update_cb),
                        list);
    }

    if (priv->avatars_iface) {
        dbus_g_proxy_disconnect_signal (priv->avatars_iface,
                        "AvatarUpdated",
                        G_CALLBACK (tp_contact_list_avatar_update_cb),
                        list);
    }

    if (priv->presence_iface) {
        dbus_g_proxy_disconnect_signal (priv->presence_iface,
                        "PresenceUpdate",
                        G_CALLBACK (tp_contact_list_presence_update_cb),
                        list);
    }
}

static void
tp_contact_list_destroy_cb (DBusGProxy           *proxy,
                EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);

    gossip_debug (DEBUG_DOMAIN, "Connection destroyed... "
              "Account disconnected or CM crashed");

    /* DBus proxies should NOT be used anymore */
    g_object_unref (priv->tp_conn);
    priv->tp_conn = NULL;
    priv->aliasing_iface = NULL;
    priv->avatars_iface = NULL;
    priv->presence_iface = NULL;

    /* Remove all contacts */
    g_hash_table_foreach (priv->contacts,
                  (GHFunc) tp_contact_list_contact_removed_foreach,
                  list);
    g_hash_table_remove_all (priv->contacts);

    /* Tell the world to not use us anymore */
    g_signal_emit (list, signals[DESTROY], 0);
}

static void
tp_contact_list_contact_removed_foreach (guint                 handle,
                     GossipContact        *contact,
                     EmpathyTpContactList *list)
{
    g_signal_handlers_disconnect_by_func (contact,
                          tp_contact_list_groups_updated_cb,
                          list);
    g_signal_handlers_disconnect_by_func (contact,
                          tp_contact_list_name_updated_cb,
                          list);

    g_signal_emit_by_name (list, "contact-removed", contact);
}

static void
tp_contact_list_block_contact (EmpathyTpContactList *list,
                   GossipContact        *contact)
{
    g_signal_handlers_block_by_func (contact,
                     tp_contact_list_groups_updated_cb,
                     list);
    g_signal_handlers_block_by_func (contact,
                     tp_contact_list_name_updated_cb,
                     list);
}

static void
tp_contact_list_unblock_contact (EmpathyTpContactList *list,
                 GossipContact        *contact)
{
    g_signal_handlers_unblock_by_func (contact,
                       tp_contact_list_groups_updated_cb,
                       list);
    g_signal_handlers_unblock_by_func (contact,
                       tp_contact_list_name_updated_cb,
                       list);
}

static gboolean
tp_contact_list_find_foreach (guint          handle,
                  GossipContact *contact,
                  gchar         *id)
{
    if (strcmp (gossip_contact_get_id (contact), id) == 0) {
        return TRUE;
    }

    return FALSE;
}

static void
tp_contact_list_newchannel_cb (DBusGProxy           *proxy,
                   const gchar          *object_path,
                   const gchar          *channel_type,
                   TelepathyHandleType   handle_type,
                   guint                 channel_handle,
                   gboolean              suppress_handle,
                   EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GossipTelepathyGroup     *group;
    TpChan                   *new_chan;
    const gchar              *bus_name;
    GArray                   *members;

    priv = GET_PRIV (list);

    if (strcmp (channel_type, TP_IFACE_CHANNEL_TYPE_CONTACT_LIST) != 0 ||
        suppress_handle ||
        !priv->setup) {
        return;
    }

    bus_name = dbus_g_proxy_get_bus_name (DBUS_G_PROXY (priv->tp_conn));
    new_chan = tp_chan_new (tp_get_bus (),
                bus_name,
                object_path,
                channel_type, handle_type, channel_handle);

    if (handle_type == TP_HANDLE_TYPE_LIST) {
        TpContactListType list_type;

        group = gossip_telepathy_group_new (new_chan, priv->tp_conn);

        list_type = tp_contact_list_get_type (list, group);
        if (list_type == TP_CONTACT_LIST_TYPE_UNKNOWN) {
            gossip_debug (DEBUG_DOMAIN,
                      "Type of contact list channel unknown: %s",
                      gossip_telepathy_group_get_name (group));

            g_object_unref (new_chan);
            g_object_unref (group);
            return;
        } else {
            gossip_debug (DEBUG_DOMAIN,
                      "New contact list channel of type: %d",
                      list_type);
        }

        g_signal_connect (group, "members-added",
                  G_CALLBACK (tp_contact_list_added_cb),
                  list);
        g_signal_connect (group, "members-removed",
                  G_CALLBACK (tp_contact_list_removed_cb),
                  list);

        members = gossip_telepathy_group_get_members (group);
        tp_contact_list_added_cb (group, members, 0,
                      TP_CHANNEL_GROUP_CHANGE_REASON_NONE,
                      NULL, list);
        g_array_free (members, TRUE);

        if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            GList *pendings, *l;

            if (priv->publish) {
                g_object_unref (priv->publish);
            }
            priv->publish = group;

            /* Makes no sense to be in remote-pending */
            g_signal_connect (group, "local-pending",
                      G_CALLBACK (tp_contact_list_pending_cb),
                      list);

            pendings = gossip_telepathy_group_get_local_pending_members_with_info (group);
            if (pendings) {
                GArray *pending;

                pending = g_array_sized_new (FALSE, FALSE, sizeof (guint), 1);
                for (l = pendings; l; l = l->next) {
                    GossipTpGroupInfo *info;

                    info = l->data;

                    g_array_insert_val (pending, 0, info->member);
                    tp_contact_list_pending_cb (group, pending,
                                    info->actor,
                                    info->reason,
                                    info->message,
                                    list);
                }
                g_array_free (pending, TRUE);
                gossip_telepathy_group_info_list_free (pendings);
            }
        }
        else if (list_type == TP_CONTACT_LIST_TYPE_SUBSCRIBE) {
            if (priv->subscribe) {
                g_object_unref (priv->subscribe);
            }
            priv->subscribe = group;
        } else {
            g_assert_not_reached ();
        }
    }
    else if (handle_type == TP_HANDLE_TYPE_GROUP) {
        const gchar *object_path;

        object_path = dbus_g_proxy_get_path (DBUS_G_PROXY (new_chan));
        if (g_hash_table_lookup (priv->groups, object_path)) {
            g_object_unref (new_chan);
            return;
        }

        group = gossip_telepathy_group_new (new_chan, priv->tp_conn);

        gossip_debug (DEBUG_DOMAIN, "New server-side group channel: %s",
                  gossip_telepathy_group_get_name (group));

        dbus_g_proxy_connect_signal (DBUS_G_PROXY (new_chan), "Closed",
                         G_CALLBACK
                         (tp_contact_list_group_channel_closed_cb),
                         list, NULL);

        g_hash_table_insert (priv->groups, g_strdup (object_path), group);
        g_signal_connect (group, "members-added",
                  G_CALLBACK (tp_contact_list_group_members_added_cb),
                  list);
        g_signal_connect (group, "members-removed",
                  G_CALLBACK (tp_contact_list_group_members_removed_cb),
                  list);

        members = gossip_telepathy_group_get_members (group);
        tp_contact_list_group_members_added_cb (group, members, 0,
                             TP_CHANNEL_GROUP_CHANGE_REASON_NONE,
                             NULL, list);
        g_array_free (members, TRUE);
    }

    g_object_unref (new_chan);
}

static TpContactListType
tp_contact_list_get_type (EmpathyTpContactList *list,
              GossipTelepathyGroup *group)
{
    EmpathyTpContactListPriv  *priv;
    TpContactListType          list_type;
    const gchar               *name;

    priv = GET_PRIV (list);

    name = gossip_telepathy_group_get_name (group);
    if (strcmp (name, "subscribe") == 0) {
        list_type = TP_CONTACT_LIST_TYPE_SUBSCRIBE;
    } else if (strcmp (name, "publish") == 0) {
        list_type = TP_CONTACT_LIST_TYPE_PUBLISH;
    } else {
        list_type = TP_CONTACT_LIST_TYPE_UNKNOWN;
    }

    return list_type;
}

static void
tp_contact_list_added_cb (GossipTelepathyGroup *group,
              GArray               *handles,
              guint                 actor_handle,
              guint                 reason,
              const gchar          *message,
              EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *added_list, *l;
    TpContactListType         list_type;

    priv = GET_PRIV (list);

    list_type = tp_contact_list_get_type (list, group);

    added_list = empathy_tp_contact_list_get_from_handles (list, handles);
    for (l = added_list; l; l = l->next) {
        GossipContact      *contact;
        GossipSubscription  subscription;

        contact = GOSSIP_CONTACT (l->data);

        gossip_debug (DEBUG_DOMAIN, "Contact '%s' added to list type %d",
                  gossip_contact_get_name (contact),
                  list_type);

        subscription = gossip_contact_get_subscription (contact);
        if (list_type == TP_CONTACT_LIST_TYPE_SUBSCRIBE) {
            subscription |= GOSSIP_SUBSCRIPTION_FROM;
        }
        else if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            subscription |= GOSSIP_SUBSCRIPTION_TO;
        }

        tp_contact_list_block_contact (list, contact);
        gossip_contact_set_subscription (contact, subscription);
        tp_contact_list_unblock_contact (list, contact);

        if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            tp_contact_list_remove_local_pending (list, contact);
            g_signal_emit_by_name (list, "contact-added", contact);
        }

        g_object_unref (contact);
    }

    g_list_free (added_list);
}

static void
tp_contact_list_removed_cb (GossipTelepathyGroup *group,
                GArray               *handles,
                guint                 actor_handle,
                guint                 reason,
                const gchar          *message,
                EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *removed_list, *l;
    TpContactListType         list_type;

    priv = GET_PRIV (list);

    list_type = tp_contact_list_get_type (list, group);

    removed_list = empathy_tp_contact_list_get_from_handles (list, handles);
    for (l = removed_list; l; l = l->next) {
        GossipContact      *contact;
        GossipSubscription  subscription;

        contact = GOSSIP_CONTACT (l->data);

        gossip_debug (DEBUG_DOMAIN, "Contact '%s' removed from list type %d",
                  gossip_contact_get_name (contact),
                  list_type);

        subscription = gossip_contact_get_subscription (contact);
        if (list_type == TP_CONTACT_LIST_TYPE_SUBSCRIBE) {
            subscription &= !GOSSIP_SUBSCRIPTION_FROM;
        }
        else if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            subscription &= !GOSSIP_SUBSCRIPTION_TO;
        }

        tp_contact_list_block_contact (list, contact);
        gossip_contact_set_subscription (contact, subscription);
        tp_contact_list_unblock_contact (list, contact);

        if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            tp_contact_list_remove_local_pending (list, contact);
            g_signal_emit_by_name (list, "contact-removed", contact);
        }
        g_object_unref (contact);
    }

    g_list_free (removed_list);
}

static void
tp_contact_list_pending_cb (GossipTelepathyGroup *group,
                GArray               *handles,
                guint                 actor_handle,
                guint                 reason,
                const gchar          *message,
                EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *pending_list, *l;
    TpContactListType         list_type;

    priv = GET_PRIV (list);

    list_type = tp_contact_list_get_type (list, group);

    pending_list = empathy_tp_contact_list_get_from_handles (list, handles);
    for (l = pending_list; l; l = l->next) {
        GossipContact *contact;

        contact = GOSSIP_CONTACT (l->data);

        gossip_debug (DEBUG_DOMAIN, "Contact '%s' pending in list type %d",
                  gossip_contact_get_name (contact),
                  list_type);

        if (list_type == TP_CONTACT_LIST_TYPE_PUBLISH) {
            EmpathyContactListInfo *info;

            info = empathy_contact_list_info_new (contact, message);
            priv->local_pending = g_list_prepend (priv->local_pending,
                                  info);

            g_signal_emit_by_name (list, "local-pending",
                           contact, message);
        }

        g_object_unref (contact);
    }

    g_list_free (pending_list);
}

static void
tp_contact_list_remove_local_pending (EmpathyTpContactList *list,
                      GossipContact        *contact)
{
    EmpathyTpContactListPriv *priv;
    GList                    *l;

    priv = GET_PRIV (list);

    for (l = priv->local_pending; l; l = l->next) {
        EmpathyContactListInfo *info;

        info = l->data;
        if (gossip_contact_equal (contact, info->contact)) {
            gossip_debug (DEBUG_DOMAIN, "Contact no more local-pending: %s",
                      gossip_contact_get_name (contact));

            priv->local_pending = g_list_delete_link (priv->local_pending, l);
            empathy_contact_list_info_free (info);
            break;
        }
    }
}

static void
tp_contact_list_groups_updated_cb (GossipContact        *contact,
                   GParamSpec           *param,
                   EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    TpContactListData         data;
    GList                    *groups, *l;

    priv = GET_PRIV (list);

    /* Make sure all groups are created */
    groups = gossip_contact_get_groups (contact);
    for (l = groups; l; l = l->next) {
        tp_contact_list_get_group (list, l->data);
    }

    data.handle = gossip_contact_get_handle (contact);
    data.new_groups = groups;

    g_hash_table_foreach (priv->groups,
                  (GHFunc) tp_contact_list_update_groups_foreach,
                  &data);
}

static void
tp_contact_list_name_updated_cb (GossipContact        *contact,
                 GParamSpec           *param,
                 EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GHashTable               *new_alias;
    const gchar              *new_name;
    guint                     handle;
    GError                   *error = NULL;

    priv = GET_PRIV (list);
    
    handle = gossip_contact_get_handle (contact);
    new_name = gossip_contact_get_name (contact);

    gossip_debug (DEBUG_DOMAIN, "renaming handle %d to %s",
              handle, new_name);

    new_alias = g_hash_table_new_full (g_direct_hash,
                       g_direct_equal,
                       NULL,
                       g_free);

    g_hash_table_insert (new_alias,
                 GUINT_TO_POINTER (handle),
                 g_strdup (new_name));

    if (!tp_conn_iface_aliasing_set_aliases (priv->aliasing_iface,
                         new_alias,
                         &error)) {
        gossip_debug (DEBUG_DOMAIN, 
                  "Couldn't rename contact: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
    }

    g_hash_table_destroy (new_alias);
}

static void
tp_contact_list_update_groups_foreach (gchar                *object_path,
                       GossipTelepathyGroup *group,
                       TpContactListData    *data)
{
    gboolean     is_member;
    gboolean     found = FALSE;
    const gchar *group_name;
    GList       *l;

    is_member = gossip_telepathy_group_is_member (group, data->handle);
    group_name = gossip_telepathy_group_get_name (group);

    for (l = data->new_groups; l; l = l->next) {
        if (strcmp (group_name, l->data) == 0) {
            found = TRUE;
            break;
        }
    }

    if (is_member && !found) {
        /* We are no longer member of this group */
        gossip_debug (DEBUG_DOMAIN, "Contact %d removed from group '%s'",
                  data->handle, group_name);
        gossip_telepathy_group_remove_member (group, data->handle, "");
    }

    if (!is_member && found) {
        /* We are now member of this group */
        gossip_debug (DEBUG_DOMAIN, "Contact %d added to group '%s'",
                  data->handle, group_name);
        gossip_telepathy_group_add_member (group, data->handle, "");
    }
}

static GossipTelepathyGroup *
tp_contact_list_get_group (EmpathyTpContactList *list,
               const gchar          *name)
{
    EmpathyTpContactListPriv *priv;
    GossipTelepathyGroup     *group;
    TpChan                   *group_channel;
    GArray                   *handles;
    guint                     group_handle;
    char                     *group_object_path;
    const char               *names[2] = {name, NULL};
    GError                   *error = NULL;

    priv = GET_PRIV (list);

    group = g_hash_table_find (priv->groups,
                   (GHRFunc) tp_contact_list_find_group,
                   (gchar*) name);
    if (group) {
        return group;
    }

    gossip_debug (DEBUG_DOMAIN, "creating new group: %s", name);

    if (!tp_conn_request_handles (DBUS_G_PROXY (priv->tp_conn),
                      TP_HANDLE_TYPE_GROUP,
                      names,
                      &handles,
                      &error)) {
        gossip_debug (DEBUG_DOMAIN,
                  "Couldn't request the creation of a new handle for group: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        return NULL;
    }
    group_handle = g_array_index (handles, guint, 0);
    g_array_free (handles, TRUE);

    if (!tp_conn_request_channel (DBUS_G_PROXY (priv->tp_conn),
                      TP_IFACE_CHANNEL_TYPE_CONTACT_LIST,
                      TP_HANDLE_TYPE_GROUP,
                      group_handle,
                      FALSE,
                      &group_object_path,
                      &error)) {
        gossip_debug (DEBUG_DOMAIN,
                  "Couldn't request the creation of a new group channel: %s",
                  error ? error->message : "No error given");
        g_clear_error (&error);
        return NULL;
    }

    group_channel = tp_chan_new (tp_get_bus (),
                     dbus_g_proxy_get_bus_name (DBUS_G_PROXY (priv->tp_conn)),
                     group_object_path,
                     TP_IFACE_CHANNEL_TYPE_CONTACT_LIST,
                     TP_HANDLE_TYPE_GROUP,
                     group_handle);

    dbus_g_proxy_connect_signal (DBUS_G_PROXY (group_channel),
                     "Closed",
                     G_CALLBACK
                     (tp_contact_list_group_channel_closed_cb),
                     list,
                     NULL);

    group = gossip_telepathy_group_new (group_channel, priv->tp_conn);
    g_hash_table_insert (priv->groups, group_object_path, group);
    g_signal_connect (group, "members-added",
              G_CALLBACK (tp_contact_list_group_members_added_cb),
              list);
    g_signal_connect (group, "members-removed",
              G_CALLBACK (tp_contact_list_group_members_removed_cb),
              list);

    return group;
}

static gboolean
tp_contact_list_find_group (gchar                 *key,
                GossipTelepathyGroup  *group,
                gchar                 *group_name)
{
    if (strcmp (group_name, gossip_telepathy_group_get_name (group)) == 0) {
        return TRUE;
    }

    return FALSE;
}

static void
tp_contact_list_get_groups_foreach (gchar                 *key,
                    GossipTelepathyGroup  *group,
                    GList                **groups)
{
    const gchar *name;

    name = gossip_telepathy_group_get_name (group);
    *groups = g_list_append (*groups, g_strdup (name));
}

static void
tp_contact_list_group_channel_closed_cb (TpChan             *channel,
                     EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);

    g_hash_table_remove (priv->groups,
                 dbus_g_proxy_get_path (DBUS_G_PROXY (channel)));
}

static void
tp_contact_list_group_members_added_cb (GossipTelepathyGroup *group,
                    GArray               *members,
                    guint                 actor_handle,
                    guint                 reason,
                    const gchar          *message,
                    EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *added_list, *l;
    const gchar              *group_name;

    priv = GET_PRIV (list);

    group_name = gossip_telepathy_group_get_name (group);
    added_list = empathy_tp_contact_list_get_from_handles (list, members);

    for (l = added_list; l; l = l->next) {
        GossipContact *contact;

        contact = GOSSIP_CONTACT (l->data);

        tp_contact_list_block_contact (list, contact);
        gossip_contact_add_group (contact, group_name);
        tp_contact_list_unblock_contact (list, contact);

        g_object_unref (contact);
    }

    g_list_free (added_list);
}

static void
tp_contact_list_group_members_removed_cb (GossipTelepathyGroup *group,
                      GArray               *members,
                      guint                 actor_handle,
                      guint                 reason,
                      const gchar          *message,
                      EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GList                    *removed_list, *l;
    const gchar              *group_name;

    priv = GET_PRIV (list);

    group_name = gossip_telepathy_group_get_name (group);
    removed_list = empathy_tp_contact_list_get_from_handles (list, members);

    for (l = removed_list; l; l = l->next) {
        GossipContact *contact;

        contact = l->data;

        tp_contact_list_block_contact (list, contact);
        gossip_contact_remove_group (contact, group_name);
        tp_contact_list_unblock_contact (list, contact);

        g_object_unref (contact);
    }

    g_list_free (removed_list);
}

static void
tp_contact_list_get_members_foreach (guint           handle,
                      GossipContact  *contact,
                      GList         **contacts)
{
    GossipSubscription subscription;

    subscription = gossip_contact_get_subscription (contact);
    if (subscription & GOSSIP_SUBSCRIPTION_TO) {
        *contacts = g_list_append (*contacts, g_object_ref (contact));
    }
}

static void
tp_contact_list_get_info (EmpathyTpContactList *list,
              GArray               *handles)
{
    EmpathyTpContactListPriv *priv;
    GError                   *error = NULL;

    priv = GET_PRIV (list);

    if (priv->presence_iface) {
        /* FIXME: We should use GetPresence instead */
        if (!tp_conn_iface_presence_request_presence (priv->presence_iface,
                                  handles, &error)) {
            gossip_debug (DEBUG_DOMAIN, 
                      "Could not request presences: %s",
                      error ? error->message : "No error given");
            g_clear_error (&error);
        }
    }

    if (priv->aliasing_iface) {
        TpContactListAliasesRequestData *data;

        data = g_slice_new (TpContactListAliasesRequestData);
        data->list = list;
        data->handles = g_memdup (handles->data, handles->len * sizeof (guint));

        tp_conn_iface_aliasing_request_aliases_async (priv->aliasing_iface,
                                  handles,
                                  (tp_conn_iface_aliasing_request_aliases_reply)
                                  tp_contact_list_request_aliases_cb,
                                  data);
    }

    if (priv->avatars_iface) {
        guint i;

        for (i = 0; i < handles->len; i++) {
            guint handle;

            handle = g_array_index (handles, gint, i);
            tp_contact_list_request_avatar (list, handle);
        }
    }
}

static void
tp_contact_list_request_avatar (EmpathyTpContactList *list,
                guint                 handle)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);
    
    /* We queue avatar requests to not send too many dbus async
     * calls at once. If we don't we reach the dbus's limit of
     * pending calls */
    priv->avatar_requests_queue = g_list_append (priv->avatar_requests_queue,
                             GUINT_TO_POINTER (handle));
    tp_contact_list_start_avatar_requests (list);
}

static void
tp_contact_list_start_avatar_requests (EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv       *priv;
    TpContactListAvatarRequestData *data;

    priv = GET_PRIV (list);

    while (n_avatar_requests <  MAX_AVATAR_REQUESTS &&
           priv->avatar_requests_queue) {
        data = g_slice_new (TpContactListAvatarRequestData);
        data->list = list;
        data->handle = GPOINTER_TO_UINT (priv->avatar_requests_queue->data);

        n_avatar_requests++;
        priv->avatar_requests_queue = g_list_remove (priv->avatar_requests_queue,
                                 priv->avatar_requests_queue->data);

        tp_conn_iface_avatars_request_avatar_async (priv->avatars_iface,
                                data->handle,
                                (tp_conn_iface_avatars_request_avatar_reply)
                                tp_contact_list_request_avatar_cb,
                                data);
    }
}

static void
tp_contact_list_avatar_update_cb (DBusGProxy           *proxy,
                  guint                 handle,
                  gchar                *new_token,
                  EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;

    priv = GET_PRIV (list);

    if (!g_hash_table_lookup (priv->contacts, GUINT_TO_POINTER (handle))) {
        /* We don't know this contact, skip */
        return;
    }

    gossip_debug (DEBUG_DOMAIN, "Changing avatar for %d to %s",
              handle, new_token);

    tp_contact_list_request_avatar (list, handle);
}

static void
tp_contact_list_request_avatar_cb (DBusGProxy                     *proxy,
                   GArray                         *avatar_data,
                   gchar                          *mime_type,
                   GError                         *error,
                   TpContactListAvatarRequestData *data)
{
    GossipContact *contact;

    contact = empathy_tp_contact_list_get_from_handle (data->list, data->handle);

    if (error) {
        gossip_debug (DEBUG_DOMAIN, "Error requesting avatar for %s: %s",
                  gossip_contact_get_name (contact),
                  error ? error->message : "No error given");
    } else {
        GossipAvatar *avatar;

        avatar = gossip_avatar_new (avatar_data->data,
                        avatar_data->len,
                        mime_type);
        tp_contact_list_block_contact (data->list, contact);
        gossip_contact_set_avatar (contact, avatar);
        tp_contact_list_unblock_contact (data->list, contact);
        gossip_avatar_unref (avatar);
    }

    n_avatar_requests--;
    tp_contact_list_start_avatar_requests (data->list);

    g_object_unref (contact);
    g_slice_free (TpContactListAvatarRequestData, data);
}

static void
tp_contact_list_aliases_update_cb (DBusGProxy           *proxy,
                   GPtrArray            *renamed_handlers,
                   EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    guint                     i;

    priv = GET_PRIV (list);

    for (i = 0; renamed_handlers->len > i; i++) {
        guint          handle;
        const gchar   *alias;
        GValueArray   *renamed_struct;
        GossipContact *contact;

        renamed_struct = g_ptr_array_index (renamed_handlers, i);
        handle = g_value_get_uint(g_value_array_get_nth (renamed_struct, 0));
        alias = g_value_get_string(g_value_array_get_nth (renamed_struct, 1));

        if (!g_hash_table_lookup (priv->contacts, GUINT_TO_POINTER (handle))) {
            /* We don't know this contact, skip */
            continue;
        }

        if (G_STR_EMPTY (alias)) {
            alias = NULL;
        }

        contact = empathy_tp_contact_list_get_from_handle (list, handle);
        tp_contact_list_block_contact (list, contact);
        gossip_contact_set_name (contact, alias);
        tp_contact_list_unblock_contact (list, contact);
        g_object_unref (contact);

        gossip_debug (DEBUG_DOMAIN, "contact %d renamed to %s (update cb)",
                  handle, alias);
    }
}

static void
tp_contact_list_request_aliases_cb (DBusGProxy                       *proxy,
                    gchar                           **contact_names,
                    GError                           *error,
                    TpContactListAliasesRequestData  *data)
{
    guint   i = 0;
    gchar **name;

    if (error) {
        gossip_debug (DEBUG_DOMAIN, "Error requesting aliases: %s",
                  error->message);
    }

    for (name = contact_names; *name && !error; name++) {
        GossipContact *contact;

        contact = empathy_tp_contact_list_get_from_handle (data->list,
                                   data->handles[i]);
        tp_contact_list_block_contact (data->list, contact);
        gossip_contact_set_name (contact, *name);
        tp_contact_list_unblock_contact (data->list, contact);
        g_object_unref (contact);

        gossip_debug (DEBUG_DOMAIN, "contact %d renamed to %s (request cb)",
                  data->handles[i], *name);

        i++;
    }

    g_free (data->handles);
    g_slice_free (TpContactListAliasesRequestData, data);
}

static void
tp_contact_list_presence_update_cb (DBusGProxy           *proxy,
                    GHashTable           *handle_table,
                    EmpathyTpContactList *list)
{
    g_hash_table_foreach (handle_table,
                  (GHFunc) tp_contact_list_parse_presence_foreach,
                  list);
}

static void
tp_contact_list_parse_presence_foreach (guint                 handle,
                    GValueArray          *presence_struct,
                    EmpathyTpContactList *list)
{
    EmpathyTpContactListPriv *priv;
    GHashTable     *presences_table;
    GossipContact  *contact;
    GossipPresence *presence = NULL;

    priv = GET_PRIV (list);

    if (!g_hash_table_lookup (priv->contacts, GUINT_TO_POINTER (handle))) {
        /* We don't know this contact, skip */
        return;
    }

    contact = empathy_tp_contact_list_get_from_handle (list, handle);
    presences_table = g_value_get_boxed (g_value_array_get_nth (presence_struct, 1));

    g_hash_table_foreach (presences_table,
                  (GHFunc) tp_contact_list_presences_table_foreach,
                  &presence);

    gossip_debug (DEBUG_DOMAIN, "Presence changed for %s (%d) to %s (%d)",
              gossip_contact_get_name (contact),
              handle,
              presence ? gossip_presence_get_status (presence) : "unset",
              presence ? gossip_presence_get_state (presence) : MC_PRESENCE_UNSET);

    tp_contact_list_block_contact (list, contact);
    gossip_contact_set_presence (contact, presence);
    tp_contact_list_unblock_contact (list, contact);

    g_object_unref (contact);
}

static void
tp_contact_list_presences_table_foreach (const gchar     *state_str,
                     GHashTable      *presences_table,
                     GossipPresence **presence)
{
    McPresence    state;
    const GValue *message;

    state = gossip_presence_state_from_str (state_str);
    if ((state == MC_PRESENCE_UNSET) || (state == MC_PRESENCE_OFFLINE)) {
        return;
    }

    if (*presence) {
        g_object_unref (*presence);
        *presence = NULL;
    }

    *presence = gossip_presence_new ();
    gossip_presence_set_state (*presence, state);

    message = g_hash_table_lookup (presences_table, "message");
    if (message != NULL) {
        gossip_presence_set_status (*presence,
                        g_value_get_string (message));
    }
}

static void
tp_contact_list_status_changed_cb (MissionControl                  *mc,
                   TelepathyConnectionStatus        status,
                   McPresence                       presence,
                   TelepathyConnectionStatusReason  reason,
                   const gchar                     *unique_name,
                   EmpathyTpContactList            *list)
{
    EmpathyTpContactListPriv *priv;
    McAccount                *account;

    priv = GET_PRIV (list);

    account = mc_account_lookup (unique_name);
    if (status != TP_CONN_STATUS_DISCONNECTED ||
        !gossip_account_equal (account, priv->account) ||
        !priv->tp_conn) {
        g_object_unref (account);
        return;
    }

    /* We are disconnected, do just like if the connection was destroyed */
    g_signal_handlers_disconnect_by_func (priv->tp_conn,
                          tp_contact_list_destroy_cb,
                          list);
    tp_contact_list_destroy_cb (DBUS_G_PROXY (priv->tp_conn), list);

    g_object_unref (account);
}