path: root/libempathy/empathy-filter.c

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/*
 * Copyright (C) 2007-2008 Collabora Ltd.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * Authors: Xavier Claessens <xclaesse@gmail.com>
 */

#include <config.h>

#include <dbus/dbus-glib.h>

#include <libtelepathy/tp-helpers.h>
#include <libtelepathy/tp-conn.h>

#include "empathy-filter.h"
#include "empathy-debug.h"
#include "empathy-utils.h"
#include "empathy-marshal.h"

#define GET_PRIV(obj) (G_TYPE_INSTANCE_GET_PRIVATE ((obj), \
               EMPATHY_TYPE_FILTER, EmpathyFilterPriv))

#define DEBUG_DOMAIN "EmpathyFilter"

struct _EmpathyFilterPriv {
    GHashTable *table;
};

static void     empathy_filter_class_init     (EmpathyFilterClass *klass);
static void     empathy_filter_init           (EmpathyFilter      *filter);
static void     filter_finalize               (GObject            *object);
static gboolean empathy_filter_filter_channel (EmpathyFilter      *filter,
                           const gchar        *bus_name,
                           const gchar        *connection,
                           const gchar        *channel_type,
                           const gchar        *channel,
                           guint               handle_type,
                           guint               handle,
                           guint               id,
                           GError            **error);

#include "empathy-filter-glue.h"

enum {
    PROCESS,
    NEW_CHANNEL,
    LAST_SIGNAL
};

static guint signals[LAST_SIGNAL];

G_DEFINE_TYPE (EmpathyFilter, empathy_filter, G_TYPE_OBJECT)

static void
empathy_filter_class_init (EmpathyFilterClass *klass)
{
    GObjectClass *object_class = G_OBJECT_CLASS (klass);

    object_class->finalize = filter_finalize;

    signals[NEW_CHANNEL] =
        g_signal_new ("new-channel",
                  G_OBJECT_CLASS_TYPE (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  _empathy_marshal_VOID__OBJECT_OBJECT,
                  G_TYPE_NONE,
                  2, TELEPATHY_CONN_TYPE, TELEPATHY_CHAN_TYPE);

    signals[PROCESS] =
        g_signal_new ("process",
                  G_OBJECT_CLASS_TYPE (klass),
                  G_SIGNAL_RUN_LAST,
                  0,
                  NULL, NULL,
                  _empathy_marshal_VOID__UINT_BOOLEAN,
                  G_TYPE_NONE,
                  2, G_TYPE_UINT, G_TYPE_BOOLEAN);

    g_type_class_add_private (object_class, sizeof (EmpathyFilterPriv));
}

static void
empathy_filter_init (EmpathyFilter *filter)
{
    EmpathyFilterPriv *priv;

    priv = GET_PRIV (filter);

    priv->table = g_hash_table_new_full (g_direct_hash, g_direct_equal,
                         (GDestroyNotify) g_object_unref,
                         NULL);
}

static void
filter_finalize (GObject *object)
{
    EmpathyFilterPriv *priv;

    priv = GET_PRIV (object);

    g_hash_table_destroy (priv->table);
}

EmpathyFilter *
empathy_filter_new (const gchar *bus_name,
            const gchar *object_path,
            const gchar *channel_type,
            guint        priority,
            guint        flags)
{
    static gboolean  initialized = FALSE;
    MissionControl  *mc;
    EmpathyFilter   *filter;
    DBusGProxy      *proxy;
    guint            result;
    GError          *error = NULL;

    if (!initialized) {
        dbus_g_object_type_install_info (EMPATHY_TYPE_FILTER,
                         &dbus_glib_empathy_filter_object_info);
        initialized = TRUE;
    }

    proxy = dbus_g_proxy_new_for_name (tp_get_bus (),
                       DBUS_SERVICE_DBUS,
                       DBUS_PATH_DBUS,
                       DBUS_INTERFACE_DBUS);

    if (!dbus_g_proxy_call (proxy, "RequestName", &error,
                G_TYPE_STRING, bus_name,
                G_TYPE_UINT, DBUS_NAME_FLAG_DO_NOT_QUEUE,
                G_TYPE_INVALID,
                G_TYPE_UINT, &result,
                G_TYPE_INVALID)) {
        empathy_debug (DEBUG_DOMAIN,
                   "Failed to request name: %s",
                   error ? error->message : "No error given");
        g_clear_error (&error);

        return NULL;
    }
    g_object_unref (proxy);

    filter = g_object_new (EMPATHY_TYPE_FILTER, NULL);
    dbus_g_connection_register_g_object (tp_get_bus (),
                         object_path,
                         G_OBJECT (filter));

    mc = empathy_mission_control_new ();
    mission_control_register_filter (mc,
                     bus_name,
                     object_path,
                     channel_type,
                     priority,
                     flags,
                     NULL);
    g_object_unref (mc);

    return filter;
}

void
empathy_filter_process (EmpathyFilter *filter,
            TpChan        *tp_chan,
            gboolean       process)
{
    EmpathyFilterPriv *priv;
    guint              id;

    g_return_if_fail (EMPATHY_IS_FILTER (filter));
    g_return_if_fail (TELEPATHY_IS_CHAN (tp_chan));

    priv = GET_PRIV (filter);

    id = GPOINTER_TO_UINT (g_hash_table_lookup (priv->table, tp_chan));
    g_return_if_fail (id != 0);

    empathy_debug (DEBUG_DOMAIN, "Processing channel id %d: %s",
               id, process ? "Yes" : "No");
    g_signal_emit (filter, signals[PROCESS], 0, id, process);
    g_hash_table_remove (priv->table, tp_chan);
}

static gboolean
empathy_filter_filter_channel (EmpathyFilter  *filter,
                   const gchar    *bus_name,
                   const gchar    *connection,
                   const gchar    *channel_type,
                   const gchar    *channel,
                   guint           handle_type,
                   guint           handle,
                   guint           id,
                   GError        **error)
{
    EmpathyFilterPriv *priv;
    TpChan            *tp_chan;
    TpConn            *tp_conn;

    priv = GET_PRIV (filter);

    tp_conn = tp_conn_new_without_connect (tp_get_bus (),
                           bus_name,
                           connection,
                           NULL,
                           error);
    if (!tp_conn) {
        return FALSE;
    }


    tp_chan = tp_chan_new (tp_get_bus(),
                   bus_name,
                   channel,
                   channel_type,
                   handle_type,
                   handle);

    g_hash_table_insert (priv->table, tp_chan, GUINT_TO_POINTER (id));

    empathy_debug (DEBUG_DOMAIN, "New channel to be filtred: "
                     "type=%s handle=%d id=%d",
                     channel_type, handle, id);
    g_signal_emit (filter, signals[NEW_CHANNEL], 0, tp_conn, tp_chan);

    g_object_unref (tp_conn);

    return TRUE;
}