[telepathy-gabble/master] Add file-transfer-channel.[ch]

Guillaume Desmottes guillaume.desmottes at collabora.co.uk
Fri Apr 3 09:25:43 PDT 2009


Far from being perfect but seems to basically work.
---
 src/file-transfer-channel.c | 1614 +++++++++++++++++++++++++++++++++++++++++++
 src/file-transfer-channel.h |   78 +++
 2 files changed, 1692 insertions(+), 0 deletions(-)
 create mode 100644 src/file-transfer-channel.c
 create mode 100644 src/file-transfer-channel.h

diff --git a/src/file-transfer-channel.c b/src/file-transfer-channel.c
new file mode 100644
index 0000000..9c74738
--- /dev/null
+++ b/src/file-transfer-channel.c
@@ -0,0 +1,1614 @@
+/*
+ * gabble-file-transfer-channel.c - Source for GabbleFileTransferChannel
+ * Copyright (C) 2009 Collabora Ltd.
+ *   @author: Guillaume Desmottes <guillaume.desmottes at collabora.co.uk>
+ *
+ * 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
+ */
+
+#include <glib/gstdio.h>
+#include <dbus/dbus-glib.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#define DEBUG_FLAG GABBLE_DEBUG_FT
+#include "debug.h"
+
+#include <loudmouth/loudmouth.h>
+
+#include "bytestream-factory.h"
+#include "connection.h"
+#include "file-transfer-channel.h"
+#include "gabble-signals-marshal.h"
+#include "namespaces.h"
+#include "presence-cache.h"
+#include "util.h"
+
+#include <telepathy-glib/channel-iface.h>
+#include <telepathy-glib/interfaces.h>
+#include <telepathy-glib/dbus.h>
+#include <telepathy-glib/svc-generic.h>
+#include <telepathy-glib/svc-channel.h>
+
+static void
+channel_iface_init (gpointer g_iface, gpointer iface_data);
+static void
+file_transfer_iface_init (gpointer g_iface, gpointer iface_data);
+
+G_DEFINE_TYPE_WITH_CODE (GabbleFileTransferChannel, gabble_file_transfer_channel,
+    G_TYPE_OBJECT,
+    G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_CHANNEL, channel_iface_init);
+    G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_DBUS_PROPERTIES,
+                           tp_dbus_properties_mixin_iface_init);
+    G_IMPLEMENT_INTERFACE (TP_TYPE_EXPORTABLE_CHANNEL, NULL);
+    G_IMPLEMENT_INTERFACE (TP_TYPE_CHANNEL_IFACE, NULL);
+    G_IMPLEMENT_INTERFACE (TP_TYPE_SVC_CHANNEL_TYPE_FILE_TRANSFER,
+                           file_transfer_iface_init);
+);
+
+#define CHECK_STR_EMPTY(x) ((x) == NULL || (x)[0] == '\0')
+
+#define GABBLE_UNDEFINED_FILE_SIZE G_MAXUINT64
+
+static const char *gabble_file_transfer_channel_interfaces[] = { NULL };
+
+/* properties */
+enum
+{
+  PROP_OBJECT_PATH = 1,
+
+   /* org.freedesktop.Telepathy.Channel D-Bus properties */
+  PROP_CHANNEL_TYPE,
+  PROP_INTERFACES,
+  PROP_HANDLE,
+  PROP_TARGET_ID,
+  PROP_HANDLE_TYPE,
+  PROP_REQUESTED,
+  PROP_INITIATOR_HANDLE,
+  PROP_INITIATOR_ID,
+
+  PROP_CHANNEL_DESTROYED,
+  PROP_CHANNEL_PROPERTIES,
+
+  /* org.freedesktop.Telepathy.Channel.Type.FileTransfer D-Bus properties */
+  PROP_STATE,
+  PROP_CONTENT_TYPE,
+  PROP_FILENAME,
+  PROP_SIZE,
+  PROP_CONTENT_HASH_TYPE,
+  PROP_CONTENT_HASH,
+  PROP_DESCRIPTION,
+  PROP_DATE,
+  PROP_AVAILABLE_SOCKET_TYPES,
+  PROP_TRANSFERRED_BYTES,
+  PROP_INITIAL_OFFSET,
+
+  PROP_CONNECTION,
+  PROP_BYTESTREAM,
+  LAST_PROPERTY
+};
+
+/* private structure */
+struct _GabbleFileTransferChannelPrivate {
+  gboolean dispose_has_run;
+  gboolean closed;
+  gchar *object_path;
+  TpHandle handle;
+  GabbleConnection *connection;
+  GTimeVal last_transferred_bytes_emitted;
+  guint progress_timer;
+  gchar *socket_path;
+  TpHandle initiator;
+  gboolean remote_accepted;
+
+  GabbleBytestreamIface *bytestream;
+  GIOChannel *channel;
+  /* the watch id on the channel */
+  guint watch_id;
+
+  /* properties */
+  TpFileTransferState state;
+  gchar *content_type;
+  gchar *filename;
+  guint64 size;
+  TpFileHashType content_hash_type;
+  gchar *content_hash;
+  gchar *description;
+  GHashTable *available_socket_types;
+  guint64 transferred_bytes;
+  guint64 initial_offset;
+  guint64 date;
+};
+
+static void set_bytestream (GabbleFileTransferChannel *self,
+    GabbleBytestreamIface *bytestream);
+
+static void
+gabble_file_transfer_channel_do_close (GabbleFileTransferChannel *self)
+{
+  if (self->priv->closed)
+    return;
+
+  DEBUG ("Emitting closed signal for %s", self->priv->object_path);
+  tp_svc_channel_emit_closed (self);
+  self->priv->closed = TRUE;
+}
+
+static void
+gabble_file_transfer_channel_init (GabbleFileTransferChannel *obj)
+{
+  obj->priv = G_TYPE_INSTANCE_GET_PRIVATE (obj,
+      GABBLE_TYPE_FILE_TRANSFER_CHANNEL, GabbleFileTransferChannelPrivate);
+
+  /* allocate any data required by the object here */
+  obj->priv->object_path = NULL;
+  obj->priv->connection = NULL;
+}
+
+static void gabble_file_transfer_channel_set_state (
+    TpSvcChannelTypeFileTransfer *iface, TpFileTransferState state,
+    TpFileTransferStateChangeReason reason);
+
+static void
+gabble_file_transfer_channel_get_property (GObject *object,
+                                           guint property_id,
+                                           GValue *value,
+                                           GParamSpec *pspec)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (object);
+  TpBaseConnection *base_conn = (TpBaseConnection *) self->priv->connection;
+
+  switch (property_id)
+    {
+      case PROP_OBJECT_PATH:
+        g_value_set_string (value, self->priv->object_path);
+        break;
+      case PROP_CHANNEL_TYPE:
+        g_value_set_static_string (value,
+            TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER);
+        break;
+      case PROP_HANDLE_TYPE:
+        g_value_set_uint (value, TP_HANDLE_TYPE_CONTACT);
+        break;
+      case PROP_TARGET_ID:
+        {
+           TpHandleRepoIface *repo = tp_base_connection_get_handles (base_conn,
+             TP_HANDLE_TYPE_CONTACT);
+
+           g_value_set_string (value, tp_handle_inspect (repo,
+                 self->priv->handle));
+        }
+        break;
+      case PROP_HANDLE:
+        g_value_set_uint (value, self->priv->handle);
+        break;
+      case PROP_REQUESTED:
+        g_value_set_boolean (value, (self->priv->initiator ==
+              base_conn->self_handle));
+        break;
+      case PROP_INITIATOR_HANDLE:
+        g_value_set_uint (value, self->priv->initiator);
+        break;
+      case PROP_INITIATOR_ID:
+          {
+            TpHandleRepoIface *repo = tp_base_connection_get_handles (
+                base_conn, TP_HANDLE_TYPE_CONTACT);
+
+            g_assert (self->priv->initiator != 0);
+            g_value_set_string (value,
+                tp_handle_inspect (repo, self->priv->initiator));
+          }
+        break;
+      case PROP_CONNECTION:
+        g_value_set_object (value, self->priv->connection);
+        break;
+      case PROP_INTERFACES:
+        g_value_set_boxed (value, gabble_file_transfer_channel_interfaces);
+        break;
+      case PROP_STATE:
+        g_value_set_uint (value, self->priv->state);
+        break;
+      case PROP_CONTENT_TYPE:
+        g_value_set_string (value, self->priv->content_type);
+        break;
+      case PROP_FILENAME:
+        g_value_set_string (value, self->priv->filename);
+        break;
+      case PROP_SIZE:
+        g_value_set_uint64 (value, self->priv->size);
+        break;
+      case PROP_CONTENT_HASH_TYPE:
+        g_value_set_uint (value, self->priv->content_hash_type);
+        break;
+      case PROP_CONTENT_HASH:
+        g_value_set_string (value, self->priv->content_hash);
+        break;
+      case PROP_DESCRIPTION:
+        g_value_set_string (value, self->priv->description);
+        break;
+      case PROP_AVAILABLE_SOCKET_TYPES:
+        g_value_set_boxed (value, self->priv->available_socket_types);
+        break;
+      case PROP_TRANSFERRED_BYTES:
+        g_value_set_uint64 (value, self->priv->transferred_bytes);
+        break;
+      case PROP_INITIAL_OFFSET:
+        g_value_set_uint64 (value, self->priv->initial_offset);
+        break;
+      case PROP_DATE:
+        g_value_set_uint64 (value, self->priv->date);
+        break;
+     case PROP_CHANNEL_DESTROYED:
+        g_value_set_boolean (value, self->priv->closed);
+        break;
+      case PROP_CHANNEL_PROPERTIES:
+        g_value_take_boxed (value,
+            tp_dbus_properties_mixin_make_properties_hash (object,
+                TP_IFACE_CHANNEL, "ChannelType",
+                TP_IFACE_CHANNEL, "Interfaces",
+                TP_IFACE_CHANNEL, "TargetHandle",
+                TP_IFACE_CHANNEL, "TargetID",
+                TP_IFACE_CHANNEL, "TargetHandleType",
+                TP_IFACE_CHANNEL, "Requested",
+                TP_IFACE_CHANNEL, "InitiatorHandle",
+                TP_IFACE_CHANNEL, "InitiatorID",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "State",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "ContentType",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "Filename",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "Size",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "ContentHashType",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "ContentHash",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "Description",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "Date",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "AvailableSocketTypes",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "TransferredBytes",
+                TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "InitialOffset",
+                NULL));
+        break;
+      case PROP_BYTESTREAM:
+        g_value_set_object (value, self->priv->bytestream);
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+gabble_file_transfer_channel_set_property (GObject *object,
+                                          guint property_id,
+                                          const GValue *value,
+                                          GParamSpec *pspec)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (object);
+
+  switch (property_id)
+    {
+      case PROP_OBJECT_PATH:
+        g_free (self->priv->object_path);
+        self->priv->object_path = g_value_dup_string (value);
+        break;
+      case PROP_HANDLE:
+        self->priv->handle = g_value_get_uint (value);
+        break;
+      case PROP_CONNECTION:
+        self->priv->connection = g_value_get_object (value);
+        break;
+      case PROP_HANDLE_TYPE:
+        g_assert (g_value_get_uint (value) == 0
+                  || g_value_get_uint (value) == TP_HANDLE_TYPE_CONTACT);
+        break;
+      case PROP_CHANNEL_TYPE:
+        /* these properties are writable in the interface, but not actually
+         * meaningfully changeable on this channel, so we do nothing */
+        break;
+      case PROP_STATE:
+        gabble_file_transfer_channel_set_state (
+            TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (object),
+            g_value_get_uint (value),
+            TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE);
+        break;
+      case PROP_CONTENT_TYPE:
+        g_free (self->priv->content_type);
+        self->priv->content_type = g_value_dup_string (value);
+        break;
+      case PROP_FILENAME:
+        g_free (self->priv->filename);
+        self->priv->filename = g_value_dup_string (value);
+        break;
+      case PROP_SIZE:
+        self->priv->size = g_value_get_uint64 (value);
+        break;
+      case PROP_CONTENT_HASH_TYPE:
+        self->priv->content_hash_type = g_value_get_uint (value);
+        break;
+      case PROP_CONTENT_HASH:
+        g_free (self->priv->content_hash);
+        self->priv->content_hash = g_value_dup_string (value);
+        break;
+      case PROP_DESCRIPTION:
+        g_free (self->priv->description);
+        self->priv->description = g_value_dup_string (value);
+        break;
+      case PROP_INITIATOR_HANDLE:
+        self->priv->initiator = g_value_get_uint (value);
+        g_assert (self->priv->initiator != 0);
+        break;
+      case PROP_DATE:
+        self->priv->date = g_value_get_uint64 (value);
+        break;
+      case PROP_INITIAL_OFFSET:
+        self->priv->initial_offset = g_value_get_uint64 (value);
+        break;
+      case PROP_BYTESTREAM:
+        set_bytestream (self,
+            GABBLE_BYTESTREAM_IFACE (g_value_get_object (value)));
+        break;
+      default:
+        G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+        break;
+    }
+}
+
+static void
+free_array (GArray *array)
+{
+  g_array_free (array, TRUE);
+}
+
+static GObject *
+gabble_file_transfer_channel_constructor (GType type,
+                                          guint n_props,
+                                          GObjectConstructParam *props)
+{
+  GObject *obj;
+  GabbleFileTransferChannel *self;
+  DBusGConnection *bus;
+  TpBaseConnection *base_conn;
+  TpHandleRepoIface *contact_repo;
+  GArray *unix_access;
+  TpSocketAccessControl access_control;
+
+  /* Parent constructor chain */
+  obj = G_OBJECT_CLASS (gabble_file_transfer_channel_parent_class)->
+          constructor (type, n_props, props);
+
+  self = GABBLE_FILE_TRANSFER_CHANNEL (obj);
+
+  /* Ref our handle */
+  base_conn = TP_BASE_CONNECTION (self->priv->connection);
+
+  contact_repo = tp_base_connection_get_handles (base_conn,
+      TP_HANDLE_TYPE_CONTACT);
+
+  tp_handle_ref (contact_repo, self->priv->handle);
+
+  /* Connect to the bus */
+  bus = tp_get_bus ();
+  dbus_g_connection_register_g_object (bus, self->priv->object_path, obj);
+
+  /* Initialise the available socket types hash table */
+  self->priv->available_socket_types = g_hash_table_new_full (g_direct_hash,
+      g_direct_equal, NULL, (GDestroyNotify) free_array);
+
+  /* Socket_Address_Type_Unix */
+  unix_access = g_array_sized_new (FALSE, FALSE, sizeof (TpSocketAccessControl),
+      1);
+  access_control = TP_SOCKET_ACCESS_CONTROL_LOCALHOST;
+  g_array_append_val (unix_access, access_control);
+  g_hash_table_insert (self->priv->available_socket_types,
+      GUINT_TO_POINTER (TP_SOCKET_ADDRESS_TYPE_UNIX), unix_access);
+
+  return obj;
+}
+
+static void
+gabble_file_transfer_channel_dispose (GObject *object);
+static void
+gabble_file_transfer_channel_finalize (GObject *object);
+
+static void
+gabble_file_transfer_channel_class_init (
+    GabbleFileTransferChannelClass *gabble_file_transfer_channel_class)
+{
+  GObjectClass *object_class = G_OBJECT_CLASS (
+      gabble_file_transfer_channel_class);
+  GParamSpec *param_spec;
+
+  static TpDBusPropertiesMixinPropImpl channel_props[] = {
+    { "TargetHandleType", "handle-type", NULL },
+    { "TargetHandle", "handle", NULL },
+    { "TargetID", "target-id", NULL },
+    { "ChannelType", "channel-type", NULL },
+    { "Interfaces", "interfaces", NULL },
+    { "Requested", "requested", NULL },
+    { "InitiatorHandle", "initiator-handle", NULL },
+    { "InitiatorID", "initiator-id", NULL },
+    { NULL }
+  };
+
+  static TpDBusPropertiesMixinPropImpl file_props[] = {
+    { "State", "state", NULL },
+    { "ContentType", "content-type", "content-type" },
+    { "Filename", "filename", "filename" },
+    { "Size", "size", "size" },
+    { "ContentHashType", "content-hash-type", "content-hash-type" },
+    { "ContentHash", "content-hash", "content-hash" },
+    { "Description", "description", "description" },
+    { "AvailableSocketTypes", "available-socket-types", NULL },
+    { "TransferredBytes", "transferred-bytes", NULL },
+    { "InitialOffset", "initial-offset", NULL },
+    { "Date", "date", "date" },
+    { NULL }
+  };
+
+  static TpDBusPropertiesMixinIfaceImpl prop_interfaces[] = {
+    { TP_IFACE_CHANNEL,
+      tp_dbus_properties_mixin_getter_gobject_properties,
+      NULL,
+      channel_props
+    },
+    { TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER,
+      tp_dbus_properties_mixin_getter_gobject_properties,
+      tp_dbus_properties_mixin_setter_gobject_properties,
+      file_props
+    },
+    { NULL }
+  };
+
+  g_type_class_add_private (gabble_file_transfer_channel_class,
+      sizeof (GabbleFileTransferChannelPrivate));
+
+  object_class->dispose = gabble_file_transfer_channel_dispose;
+  object_class->finalize = gabble_file_transfer_channel_finalize;
+
+  object_class->constructor = gabble_file_transfer_channel_constructor;
+  object_class->get_property = gabble_file_transfer_channel_get_property;
+  object_class->set_property = gabble_file_transfer_channel_set_property;
+
+  g_object_class_override_property (object_class, PROP_OBJECT_PATH,
+      "object-path");
+  g_object_class_override_property (object_class, PROP_CHANNEL_TYPE,
+      "channel-type");
+  g_object_class_override_property (object_class, PROP_HANDLE_TYPE,
+      "handle-type");
+  g_object_class_override_property (object_class, PROP_HANDLE, "handle");
+  g_object_class_override_property (object_class, PROP_CHANNEL_DESTROYED,
+      "channel-destroyed");
+  g_object_class_override_property (object_class, PROP_CHANNEL_PROPERTIES,
+      "channel-properties");
+
+  param_spec = g_param_spec_string ("target-id", "Target JID",
+      "The string obtained by inspecting this channel's handle",
+      NULL,
+      G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_TARGET_ID, param_spec);
+
+  param_spec = g_param_spec_boolean ("requested", "Requested?",
+      "True if this channel was requested by the local user",
+      FALSE,
+      G_PARAM_READABLE |
+      G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NAME);
+  g_object_class_install_property (object_class, PROP_REQUESTED, param_spec);
+
+ param_spec = g_param_spec_uint ("initiator-handle", "Initiator's handle",
+      "The contact who initiated the channel",
+      0, G_MAXUINT32, 0,
+      G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NAME);
+  g_object_class_install_property (object_class, PROP_INITIATOR_HANDLE,
+      param_spec);
+
+  param_spec = g_param_spec_string ("initiator-id", "Initiator's bare JID",
+      "The string obtained by inspecting the initiator-handle",
+      NULL,
+      G_PARAM_READABLE |
+      G_PARAM_STATIC_NICK | G_PARAM_STATIC_BLURB | G_PARAM_STATIC_NAME);
+  g_object_class_install_property (object_class, PROP_INITIATOR_ID,
+      param_spec);
+
+  param_spec = g_param_spec_object ("connection",
+      "GabbleConnection object",
+      "Gabble Connection that owns the"
+      "connection for this IM channel",
+      GABBLE_TYPE_CONNECTION,
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_CONNECTION, param_spec);
+
+  param_spec = g_param_spec_boxed ("interfaces", "Extra D-Bus interfaces",
+      "Additional Channel.Interface.* interfaces",
+      G_TYPE_STRV,
+      G_PARAM_READABLE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB |
+      G_PARAM_STATIC_NAME);
+  g_object_class_install_property (object_class, PROP_INTERFACES, param_spec);
+
+  param_spec = g_param_spec_uint (
+      "state",
+      "TpFileTransferState state",
+      "State of the file transfer in this channel",
+      0,
+      G_MAXUINT,
+      0,
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_STATE, param_spec);
+
+  param_spec = g_param_spec_string (
+      "content-type",
+      "gchar *content-type",
+      "ContentType of the file",
+      "application/octet-stream",
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_CONTENT_TYPE,
+      param_spec);
+
+  param_spec = g_param_spec_string (
+      "filename",
+      "gchar *filename",
+      "Name of the file",
+      "",
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_FILENAME, param_spec);
+
+  param_spec = g_param_spec_uint64 (
+      "size",
+      "guint size",
+      "Size of the file in bytes",
+      0,
+      G_MAXUINT64,
+      GABBLE_UNDEFINED_FILE_SIZE,
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_SIZE, param_spec);
+
+  param_spec = g_param_spec_uint (
+      "content-hash-type",
+      "GabbleFileHashType content-hash-type",
+      "Hash type",
+      0,
+      G_MAXUINT,
+      TP_FILE_HASH_TYPE_NONE,
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_CONTENT_HASH_TYPE,
+      param_spec);
+
+  param_spec = g_param_spec_string (
+      "content-hash",
+      "gchar *content-hash",
+      "Hash of the file contents",
+      "",
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_CONTENT_HASH,
+      param_spec);
+
+  param_spec = g_param_spec_string (
+      "description",
+      "gchar *description",
+      "Description of the file",
+      "",
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_DESCRIPTION, param_spec);
+
+  param_spec = g_param_spec_boxed (
+      "available-socket-types",
+      "GabbleSupportedSocketMap available-socket-types",
+      "Available socket types",
+      dbus_g_type_get_map ("GHashTable", G_TYPE_UINT, DBUS_TYPE_G_UINT_ARRAY),
+      G_PARAM_READABLE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_AVAILABLE_SOCKET_TYPES,
+      param_spec);
+
+  param_spec = g_param_spec_uint64 (
+      "transferred-bytes",
+      "guint64 transferred-bytes",
+      "Bytes transferred",
+      0,
+      G_MAXUINT64,
+      0,
+      G_PARAM_READABLE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_TRANSFERRED_BYTES,
+      param_spec);
+
+  param_spec = g_param_spec_uint64 (
+      "initial-offset",
+      "guint64 initial_offset",
+      "Offset set at the beginning of the transfer",
+      0,
+      G_MAXUINT64,
+      0,
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_INITIAL_OFFSET,
+      param_spec);
+
+  param_spec = g_param_spec_uint64 (
+      "date",
+      "Epoch time",
+      "the last modification time of the file being transferred",
+      0,
+      G_MAXUINT64,
+      0,
+      G_PARAM_CONSTRUCT_ONLY |
+      G_PARAM_READWRITE |
+      G_PARAM_STATIC_NICK |
+      G_PARAM_STATIC_BLURB);
+  g_object_class_install_property (object_class, PROP_DATE,
+      param_spec);
+
+  param_spec = g_param_spec_object (
+      "bytestream",
+      "Object implementing the GabbleBytestreamIface interface",
+      "Bytestream object used to send the file",
+      G_TYPE_OBJECT,
+      G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+  g_object_class_install_property (object_class, PROP_BYTESTREAM,
+      param_spec);
+
+  gabble_file_transfer_channel_class->dbus_props_class.interfaces = \
+      prop_interfaces;
+  tp_dbus_properties_mixin_class_init (object_class,
+      G_STRUCT_OFFSET (GabbleFileTransferChannelClass, dbus_props_class));
+}
+
+void
+gabble_file_transfer_channel_dispose (GObject *object)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (object);
+  TpBaseConnection *base_conn = TP_BASE_CONNECTION (self->priv->connection);
+  TpHandleRepoIface *handle_repo = tp_base_connection_get_handles (base_conn,
+      TP_HANDLE_TYPE_CONTACT);
+
+  if (self->priv->dispose_has_run)
+    return;
+
+  self->priv->dispose_has_run = TRUE;
+
+  tp_handle_unref (handle_repo, self->priv->handle);
+
+  gabble_file_transfer_channel_do_close (self);
+
+  if (self->priv->progress_timer != 0)
+    {
+      g_source_remove (self->priv->progress_timer);
+      self->priv->progress_timer = 0;
+    }
+
+  if (self->priv->bytestream != NULL)
+    {
+      g_signal_handlers_disconnect_matched (self->priv->bytestream,
+          G_SIGNAL_MATCH_DATA, 0, 0, NULL, NULL, self);
+      g_object_unref (self->priv->bytestream);
+      self->priv->bytestream = NULL;
+    }
+
+  if (self->priv->watch_id != 0)
+    {
+      g_source_remove (self->priv->watch_id);
+      self->priv->watch_id = 0;
+    }
+
+  if (self->priv->channel != NULL)
+    {
+      g_io_channel_unref (self->priv->channel);
+      self->priv->channel = NULL;
+    }
+
+  /* release any references held by the object here */
+
+  if (G_OBJECT_CLASS (gabble_file_transfer_channel_parent_class)->dispose)
+    G_OBJECT_CLASS (gabble_file_transfer_channel_parent_class)->dispose (object);
+}
+
+static void
+gabble_file_transfer_channel_finalize (GObject *object)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (object);
+
+  /* free any data held directly by the object here */
+  g_free (self->priv->object_path);
+  g_free (self->priv->filename);
+  g_free (self->priv->socket_path);
+  g_free (self->priv->content_type);
+  g_free (self->priv->content_hash);
+  g_free (self->priv->description);
+  g_hash_table_destroy (self->priv->available_socket_types);
+
+  G_OBJECT_CLASS (gabble_file_transfer_channel_parent_class)->finalize (object);
+}
+
+
+/**
+ * gabble_file_transfer_channel_close
+ *
+ * Implements DBus method Close
+ * on interface org.freedesktop.Telepathy.Channel
+ */
+static void
+gabble_file_transfer_channel_close (TpSvcChannel *iface,
+                                   DBusGMethodInvocation *context)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+
+  if (self->priv->state != TP_FILE_TRANSFER_STATE_COMPLETED &&
+      self->priv->state != TP_FILE_TRANSFER_STATE_CANCELLED)
+    {
+      /* TODO: close the bytestream ? */
+      gabble_file_transfer_channel_set_state (
+          TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (iface),
+          TP_FILE_TRANSFER_STATE_CANCELLED,
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_STOPPED);
+    }
+
+  gabble_file_transfer_channel_do_close (GABBLE_FILE_TRANSFER_CHANNEL (iface));
+  tp_svc_channel_return_from_close (context);
+}
+
+/**
+ * gabble_file_transfer_channel_get_channel_type
+ *
+ * Implements DBus method GetChannelType
+ * on interface org.freedesktop.Telepathy.Channel
+ */
+static void
+gabble_file_transfer_channel_get_channel_type (TpSvcChannel *iface,
+                                              DBusGMethodInvocation *context)
+{
+  tp_svc_channel_return_from_get_channel_type (context,
+      TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER);
+}
+
+/**
+ * gabble_file_transfer_channel_get_handle
+ *
+ * Implements DBus method GetHandle
+ * on interface org.freedesktop.Telepathy.Channel
+ */
+static void
+gabble_file_transfer_channel_get_handle (TpSvcChannel *iface,
+                                        DBusGMethodInvocation *context)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+
+  tp_svc_channel_return_from_get_handle (context, TP_HANDLE_TYPE_CONTACT,
+      self->priv->handle);
+}
+
+/**
+ * gabble_file_transfer_channel_get_interfaces
+ *
+ * Implements DBus method GetInterfaces
+ * on interface org.freedesktop.Telepathy.Channel
+ */
+static void
+gabble_file_transfer_channel_get_interfaces (TpSvcChannel *iface,
+                                            DBusGMethodInvocation *context)
+{
+  tp_svc_channel_return_from_get_interfaces (context,
+      gabble_file_transfer_channel_interfaces);
+}
+
+static void
+channel_iface_init (gpointer g_iface, gpointer iface_data)
+{
+  TpSvcChannelClass *klass = (TpSvcChannelClass *) g_iface;
+
+#define IMPLEMENT(x) tp_svc_channel_implement_##x (\
+    klass, gabble_file_transfer_channel_##x)
+  IMPLEMENT (close);
+  IMPLEMENT (get_channel_type);
+  IMPLEMENT (get_handle);
+  IMPLEMENT (get_interfaces);
+#undef IMPLEMENT
+}
+
+static gboolean setup_local_socket (GabbleFileTransferChannel *self);
+
+static void
+gabble_file_transfer_channel_set_state (
+    TpSvcChannelTypeFileTransfer *iface,
+    TpFileTransferState state,
+    TpFileTransferStateChangeReason reason)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+
+  if (self->priv->state == state)
+    return;
+
+  self->priv->state = state;
+  tp_svc_channel_type_file_transfer_emit_file_transfer_state_changed (iface,
+      state, reason);
+}
+
+static gboolean
+check_address_and_access_control (GabbleFileTransferChannel *self,
+                                  TpSocketAddressType address_type,
+                                  TpSocketAccessControl access_control,
+                                  const GValue *access_control_param,
+                                  GError **error)
+{
+  GArray *access_arr;
+  guint i;
+
+  /* Do we support this AddressType? */
+  access_arr = g_hash_table_lookup (self->priv->available_socket_types,
+      GUINT_TO_POINTER (address_type));
+  if (access_arr == NULL)
+    {
+      g_set_error (error, TP_ERRORS, TP_ERROR_INVALID_ARGUMENT,
+          "AddressType %u is not implemented", address_type);
+      return FALSE;
+    }
+
+  /* Do we support this AccessControl? */
+  for (i = 0; i < access_arr->len; i++)
+    {
+      TpSocketAccessControl control;
+
+      control = g_array_index (access_arr, TpSocketAccessControl, i);
+      if (control == access_control)
+        return TRUE;
+    }
+
+  g_set_error (error, TP_ERRORS, TP_ERROR_INVALID_ARGUMENT,
+      "AccesControl %u is not implemented with AddressType %u",
+      access_control, address_type);
+
+  return FALSE;
+}
+
+static void
+bytestream_open (GabbleFileTransferChannel *self)
+{
+  if (self->priv->socket_path != NULL)
+    {
+      /* ProvideFile has already been called. Channel is Open */
+      tp_svc_channel_type_file_transfer_emit_initial_offset_defined (self,
+          self->priv->initial_offset);
+
+      gabble_file_transfer_channel_set_state (
+          TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self),
+          TP_FILE_TRANSFER_STATE_OPEN,
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE);
+    }
+  else
+    {
+      /* Client has to call ProvideFile to open the channel */
+      gabble_file_transfer_channel_set_state (
+          TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self),
+          TP_FILE_TRANSFER_STATE_ACCEPTED,
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE);
+    }
+}
+
+static void
+bytestream_closed (GabbleFileTransferChannel *self)
+{
+  if (self->priv->state != TP_FILE_TRANSFER_STATE_COMPLETED)
+    {
+      TpBaseConnection *base_conn = (TpBaseConnection *) \
+          self->priv->connection;
+      gboolean receiver;
+
+      receiver = (self->priv->initiator != base_conn->self_handle);
+
+      /* Something did wrong */
+      gabble_file_transfer_channel_set_state (
+          TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self),
+          TP_FILE_TRANSFER_STATE_CANCELLED,
+          receiver ?
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR :
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_ERROR);
+    }
+}
+
+static void
+bytestream_state_changed_cb (GabbleBytestreamIface *bytestream,
+                             GabbleBytestreamState state,
+                             gpointer user_data)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+
+  if (state == GABBLE_BYTESTREAM_STATE_OPEN)
+    {
+      bytestream_open (self);
+    }
+  else if (state == GABBLE_BYTESTREAM_STATE_CLOSED)
+    {
+      bytestream_closed (self);
+    }
+}
+
+static void
+set_bytestream (GabbleFileTransferChannel *self,
+                GabbleBytestreamIface *bytestream)
+{
+  if (bytestream == NULL)
+    return;
+
+  self->priv->bytestream = g_object_ref (bytestream);
+
+  g_signal_connect (bytestream, "state-changed",
+      G_CALLBACK (bytestream_state_changed_cb), self);
+}
+
+static void
+bytestream_negotiate_cb (GabbleBytestreamIface *bytestream,
+                         const gchar *stream_id,
+                         LmMessage *msg,
+                         gpointer user_data)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+
+  if (bytestream == NULL)
+    {
+      DEBUG ("initiator refused file offer");
+      /* TODO: change channel state */
+      return;
+    }
+
+  DEBUG ("initiator accepted file offer");
+
+  set_bytestream (self, bytestream);
+
+  self->priv->remote_accepted = TRUE;
+}
+
+gboolean
+gabble_file_transfer_channel_offer_file (GabbleFileTransferChannel *self,
+                                         GError **error)
+{
+  GabblePresence *presence;
+  const gchar *resource;
+  gboolean result;
+  LmMessage *msg;
+  TpHandleRepoIface *contact_repo;
+  LmMessageNode *si_node, *file_node, *desc_node;
+  const gchar *jid;
+  gchar *full_jid, *stream_id, *size_str;
+
+  g_assert (!CHECK_STR_EMPTY (self->priv->filename));
+  g_assert (self->priv->size != GABBLE_UNDEFINED_FILE_SIZE);
+  g_assert (self->priv->bytestream == NULL);
+
+  presence = gabble_presence_cache_get (self->priv->connection->presence_cache,
+      self->priv->handle);
+  if (presence == NULL)
+    {
+      DEBUG ("can't find contact's presence");
+      if (error != NULL)
+        g_set_error (error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+            "can't find contact's presence");
+
+      return FALSE;
+    }
+
+  /* FIXME: we should probably look for PRESENCE_CAP_SI_FILE_TRANSFER but it
+   * seems all client doesn't announce it. */
+  resource = gabble_presence_pick_resource_by_caps (presence, 0);
+  if (resource == NULL)
+    {
+      DEBUG ("contact doesn't have file transfer capabilities");
+      if (error != NULL)
+        g_set_error (error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+            "contact doesn't have file transfer capabilities");
+
+      return FALSE;
+    }
+
+  contact_repo = tp_base_connection_get_handles (
+     (TpBaseConnection *) self->priv->connection, TP_HANDLE_TYPE_CONTACT);
+
+  jid = tp_handle_inspect (contact_repo, self->priv->handle);
+
+  full_jid = g_strdup_printf ("%s/%s", jid, resource);
+
+  DEBUG ("Offering file transfer to %s", full_jid);
+
+  stream_id = gabble_bytestream_factory_generate_stream_id ();
+
+  msg = gabble_bytestream_factory_make_stream_init_iq (full_jid,
+      stream_id, NS_FILE_TRANSFER);
+
+  si_node = lm_message_node_get_child_with_namespace (msg->node, "si", NS_SI);
+  g_assert (si_node != NULL);
+
+  size_str = g_strdup_printf ("%" G_GUINT64_FORMAT, self->priv->size);
+
+  file_node = lm_message_node_add_child (si_node, "file", NULL);
+  lm_message_node_set_attributes (file_node,
+      "xmlns", NS_FILE_TRANSFER,
+      "name", self->priv->filename,
+      "size", size_str,
+      NULL);
+  /* TODO: other attributes */
+
+  desc_node = lm_message_node_add_child (file_node, "desc",
+      self->priv->description);
+
+
+  result = gabble_bytestream_factory_negotiate_stream (
+      self->priv->connection->bytestream_factory, msg, stream_id,
+      bytestream_negotiate_cb, self, error);
+
+  lm_message_unref (msg);
+  g_free (stream_id);
+  g_free (full_jid);
+  g_free (size_str);
+
+  return result;
+}
+
+static void
+emit_progress_update (GabbleFileTransferChannel *self)
+{
+  TpSvcChannelTypeFileTransfer *iface = \
+      TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self);
+
+  g_get_current_time (&self->priv->last_transferred_bytes_emitted);
+
+  tp_svc_channel_type_file_transfer_emit_transferred_bytes_changed (
+    iface, self->priv->transferred_bytes);
+
+  if (self->priv->progress_timer != 0)
+    {
+      g_source_remove (self->priv->progress_timer);
+      self->priv->progress_timer = 0;
+    }
+}
+
+static gboolean
+emit_progress_update_cb (gpointer user_data)
+{
+  GabbleFileTransferChannel *self = \
+      GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+
+  emit_progress_update (self);
+
+  return FALSE;
+}
+
+static void
+transferred_chunk (GabbleFileTransferChannel *self,
+                   guint64 count)
+{
+  GTimeVal timeval;
+  gint interval;
+
+  self->priv->transferred_bytes += count;
+
+  if (self->priv->transferred_bytes >= self->priv->size)
+    {
+      /* If the transfer has finished send an update right away */
+      emit_progress_update (self);
+      return;
+    }
+
+  if (self->priv->progress_timer != 0)
+    {
+      /* A progress update signal is already scheduled */
+      return;
+    }
+
+  /* Only emit the TransferredBytes signal if it has been one second since its
+   * last emission.
+   */
+  g_get_current_time (&timeval);
+  interval = timeval.tv_sec -
+    self->priv->last_transferred_bytes_emitted.tv_sec;
+
+  if (interval > 1)
+    {
+      /* At least more then a second apart, emit right away */
+      emit_progress_update (self);
+      return;
+    }
+
+  /* Convert interval to milliseconds and calculate it more precisely */
+  interval *= 1000;
+
+  interval += (timeval.tv_usec -
+    self->priv->last_transferred_bytes_emitted.tv_usec)/1000;
+
+  /* Protect against clock skew, if the interval is negative the worst thing
+   * that can happen is that we wait an extra second before emitting the signal
+   */
+  interval = ABS(interval);
+
+  if (interval > 1000)
+    emit_progress_update (self);
+  else
+    self->priv->progress_timer = g_timeout_add (1000 - interval,
+       emit_progress_update_cb, self);
+}
+
+
+static void
+data_received_cb (GabbleBytestreamIface *stream,
+                  TpHandle sender,
+                  GString *data,
+                  gpointer user_data)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+  GIOStatus status;
+
+  g_assert (self->priv->channel != NULL);
+
+  DEBUG ("received %u bytes from bytestream. Writing to socket", data->len);
+  status = g_io_channel_write_chars (self->priv->channel, data->str,
+      data->len, NULL, NULL);
+
+  transferred_chunk (self, (guint64) data->len);
+
+  if (self->priv->transferred_bytes >= self->priv->size)
+    {
+      DEBUG ("Received all the file. Transfer is complete");
+      gabble_file_transfer_channel_set_state (
+          TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self),
+          TP_FILE_TRANSFER_STATE_COMPLETED,
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE);
+      return;
+    }
+}
+
+/**
+ * gabble_file_transfer_channel_accept_file
+ *
+ * Implements D-Bus method AcceptFile
+ * on interface org.freedesktop.Telepathy.Channel.Type.FileTransfer
+ */
+static void
+gabble_file_transfer_channel_accept_file (TpSvcChannelTypeFileTransfer *iface,
+                                          guint address_type,
+                                          guint access_control,
+                                          const GValue *access_control_param,
+                                          guint64 offset,
+                                          DBusGMethodInvocation *context)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+  GError *error = NULL;
+  GValue out_address = { 0 };
+
+  if (self->priv->state != TP_FILE_TRANSFER_STATE_PENDING)
+    {
+      g_set_error (&error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+        "State is not pending; cannot accept file");
+      dbus_g_method_return_error (context, error);
+      return;
+    }
+
+  if (!check_address_and_access_control (self, address_type, access_control,
+        access_control_param, &error))
+    {
+      dbus_g_method_return_error (context, error);
+      g_error_free (error);
+      return;
+    }
+
+  if (!setup_local_socket (self))
+    {
+      DEBUG ("Could not set up local socket");
+      g_set_error (&error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+          "Could not set up local socket");
+      dbus_g_method_return_error (context, error);
+    }
+
+  DEBUG ("local socket %s", self->priv->socket_path);
+
+  gabble_file_transfer_channel_set_state (iface,
+      TP_FILE_TRANSFER_STATE_ACCEPTED,
+      TP_FILE_TRANSFER_STATE_CHANGE_REASON_REQUESTED);
+
+  g_value_init (&out_address, G_TYPE_STRING);
+  g_value_set_string (&out_address, self->priv->socket_path);
+
+  tp_svc_channel_type_file_transfer_return_from_accept_file (context,
+      &out_address);
+
+  self->priv->initial_offset = 0;
+
+  g_assert (self->priv->bytestream != NULL);
+  g_signal_connect (self->priv->bytestream, "data-received",
+      G_CALLBACK (data_received_cb), self);
+
+  /* channel state will change to open once the bytestream is open */
+
+  g_value_unset (&out_address);
+}
+
+/**
+ * gabble_file_transfer_channel_provide_file
+ *
+ * Implements D-Bus method ProvideFile
+ * on interface org.freedesktop.Telepathy.Channel.Type.FileTransfer
+ */
+static void
+gabble_file_transfer_channel_provide_file (
+    TpSvcChannelTypeFileTransfer *iface,
+    guint address_type,
+    guint access_control,
+    const GValue *access_control_param,
+    DBusGMethodInvocation *context)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+  TpBaseConnection *base_conn = (TpBaseConnection *) self->priv->connection;
+  GabbleFileTransferChannel *channel = GABBLE_FILE_TRANSFER_CHANNEL (iface);
+  GValue out_address = { 0 };
+  GError *error = NULL;
+
+  if (self->priv->initiator != base_conn->self_handle)
+    {
+      g_set_error (&error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+          "Channel is not an outgoing transfer");
+      dbus_g_method_return_error (context, error);
+      return;
+    }
+
+  if (self->priv->socket_path != NULL)
+    {
+      g_set_error (&error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+          "ProvideFile has already been called for this channel");
+      dbus_g_method_return_error (context, error);
+      return;
+    }
+
+  if (!check_address_and_access_control (self, address_type, access_control,
+        access_control_param, &error))
+    {
+      dbus_g_method_return_error (context, error);
+      g_error_free (error);
+      return;
+    }
+
+  if (!setup_local_socket (self))
+    {
+      DEBUG ("Could not set up local socket");
+      g_set_error (&error, TP_ERRORS, TP_ERROR_NOT_AVAILABLE,
+          "Could not set up local socket");
+      dbus_g_method_return_error (context, error);
+    }
+
+  g_value_init (&out_address, G_TYPE_STRING);
+  g_value_set_string (&out_address, channel->priv->socket_path);
+
+  if (self->priv->remote_accepted)
+    {
+      /* Remote already accepted the file. Channel is Open.
+       * If not channel stay Pending. */
+      tp_svc_channel_type_file_transfer_emit_initial_offset_defined (self,
+          self->priv->initial_offset);
+
+      gabble_file_transfer_channel_set_state (iface,
+          TP_FILE_TRANSFER_STATE_OPEN,
+          TP_FILE_TRANSFER_STATE_CHANGE_REASON_REQUESTED);
+    }
+
+  tp_svc_channel_type_file_transfer_return_from_provide_file (context,
+      &out_address);
+
+  g_value_unset (&out_address);
+}
+
+static void
+file_transfer_iface_init (gpointer g_iface,
+                          gpointer iface_data)
+{
+  TpSvcChannelTypeFileTransferClass *klass =
+      (TpSvcChannelTypeFileTransferClass *) g_iface;
+
+#define IMPLEMENT(x) tp_svc_channel_type_file_transfer_implement_##x (\
+    klass, gabble_file_transfer_channel_##x)
+  IMPLEMENT (accept_file);
+  IMPLEMENT (provide_file);
+#undef IMPLEMENT
+}
+
+static const gchar *
+get_local_unix_socket_path (GabbleFileTransferChannel *self)
+{
+  gchar *path = NULL;
+  gint32 random_int;
+  gchar *random_str;
+  struct stat buf;
+
+  while (TRUE)
+    {
+      random_int = g_random_int_range (0, G_MAXINT32);
+      random_str = g_strdup_printf ("tp-ft-%i", random_int);
+      path = g_build_filename (g_get_tmp_dir (), random_str, NULL);
+      g_free (random_str);
+
+      if (g_stat (path, &buf) != 0)
+        break;
+
+      g_free (path);
+    }
+
+  if (self->priv->socket_path)
+    g_free (self->priv->socket_path);
+
+  self->priv->socket_path = path;
+
+  return path;
+}
+
+/*
+ * Return a GIOChannel for the local unix socket path.
+ */
+static GIOChannel *
+get_socket_channel (GabbleFileTransferChannel *self)
+{
+  gint fd;
+  const gchar *path;
+  size_t path_len;
+  struct sockaddr_un addr;
+  GIOChannel *io_channel;
+
+  path = get_local_unix_socket_path (self);
+
+  /* FIXME: should use the socket type and access control chosen by
+   * the user. */
+  fd = socket (PF_UNIX, SOCK_STREAM, 0);
+  if (fd < 0)
+    {
+      DEBUG("socket() failed");
+      return NULL;
+    }
+
+  memset (&addr, 0, sizeof (addr));
+  addr.sun_family = AF_UNIX;
+  path_len = strlen (path);
+  strncpy (addr.sun_path, path, path_len);
+  g_unlink (path);
+
+  if (bind (fd, (struct sockaddr*) &addr,
+        G_STRUCT_OFFSET (struct sockaddr_un, sun_path) + path_len) < 0)
+    {
+      DEBUG ("bind failed");
+      close (fd);
+      return NULL;
+    }
+
+  if (listen (fd, 1) < 0)
+    {
+      DEBUG ("listen failed");
+      close (fd);
+      return NULL;
+    }
+
+  io_channel = g_io_channel_unix_new (fd);
+  g_io_channel_set_close_on_unref (io_channel, TRUE);
+  return io_channel;
+}
+
+/*
+ * Data is available from the channel so we can send it.
+ */
+static gboolean
+input_channel_readable_cb (GIOChannel *source,
+                           GIOCondition condition,
+                           gpointer user_data)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+  GIOStatus status;
+
+#define BUFF_SIZE 4096
+
+  if (condition & G_IO_IN)
+    {
+      gchar *buff;
+      gsize bytes_read;
+
+      buff = g_malloc (BUFF_SIZE);
+      status = g_io_channel_read_chars (source, buff, BUFF_SIZE,
+          &bytes_read, NULL);
+      switch (status)
+        {
+        case G_IO_STATUS_NORMAL:
+          if (!gabble_bytestream_iface_send (self->priv->bytestream, bytes_read,
+              buff))
+            {
+              DEBUG ("Sending failed. Closing the bytestream");
+              gabble_bytestream_iface_close (self->priv->bytestream, NULL);
+              return FALSE;
+            }
+
+          DEBUG("Data available, writing a %"G_GSIZE_FORMAT" bytes chunk",
+              bytes_read);
+          transferred_chunk (self, (guint64) bytes_read);
+
+          if (self->priv->transferred_bytes >= self->priv->size)
+            {
+              DEBUG ("All the file has been sent. Closing the bytestream");
+
+              gabble_file_transfer_channel_set_state (
+                  TP_SVC_CHANNEL_TYPE_FILE_TRANSFER (self),
+                  TP_FILE_TRANSFER_STATE_COMPLETED,
+                  TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE);
+
+              gabble_bytestream_iface_close (self->priv->bytestream, NULL);
+              return FALSE;
+            }
+          return TRUE;
+        case G_IO_STATUS_AGAIN:
+          DEBUG("Data available, try again");
+          g_free (buff);
+          return TRUE;
+        case G_IO_STATUS_EOF:
+          DEBUG("EOF received on input");
+          break;
+        default:
+          DEBUG ("Read from the channel failed");
+      }
+      g_free (buff);
+    }
+
+#undef BUFF_SIZE
+
+  DEBUG("Closing transfer");
+
+  g_io_channel_unref (self->priv->channel);
+  self->priv->channel = NULL;
+  return FALSE;
+}
+
+static void
+file_transfer_send (GabbleFileTransferChannel *self)
+{
+  self->priv->watch_id = g_io_add_watch (self->priv->channel,
+          G_IO_IN | G_IO_HUP, input_channel_readable_cb, self);
+}
+
+static void
+file_transfer_receive (GabbleFileTransferChannel *self)
+{
+  /* We are ready to receive the file and so can accept the bytestream */
+  /* TODO: set a function once we support resume */
+  gabble_bytestream_iface_accept (self->priv->bytestream, NULL, NULL);
+}
+
+/*
+ * Some client is connecting to the Unix socket.
+ */
+static gboolean
+accept_local_socket_connection (GIOChannel *source,
+                                GIOCondition condition,
+                                gpointer user_data)
+{
+  GabbleFileTransferChannel *self = GABBLE_FILE_TRANSFER_CHANNEL (user_data);
+  int new_fd;
+  struct sockaddr_un addr;
+  socklen_t addrlen;
+
+  if (condition & G_IO_IN)
+    {
+      gboolean requested;
+      TpBaseConnection *base_conn = (TpBaseConnection *) \
+          self->priv->connection;
+
+      DEBUG ("Client connected to local socket");
+
+      addrlen = sizeof (addr);
+      new_fd = accept (g_io_channel_unix_get_fd (source),
+          (struct sockaddr *) &addr, &addrlen);
+      if (new_fd < 0)
+        {
+          DEBUG ("accept() failed");
+          return FALSE;
+        }
+
+      self->priv->channel = g_io_channel_unix_new (new_fd);
+      g_io_channel_set_close_on_unref (self->priv->channel, TRUE);
+      g_io_channel_set_encoding (self->priv->channel, NULL, NULL);
+      g_io_channel_set_buffered (self->priv->channel, FALSE);
+
+      requested = (self->priv->initiator == base_conn->self_handle);
+
+      if (!requested)
+        /* Incoming file transfer */
+        file_transfer_receive (self);
+      else
+        /* Outgoing file transfer */
+        file_transfer_send (self);
+    }
+
+  return FALSE;
+}
+
+static gboolean
+setup_local_socket (GabbleFileTransferChannel *self)
+{
+  GIOChannel *io_channel;
+
+  io_channel = get_socket_channel (self);
+  if (io_channel == NULL)
+    {
+      return FALSE;
+    }
+
+  g_io_add_watch (io_channel, G_IO_IN | G_IO_HUP,
+      accept_local_socket_connection, self);
+  g_io_channel_unref (io_channel);
+
+  return TRUE;
+}
+
+GabbleFileTransferChannel *
+gabble_file_transfer_channel_new (GabbleConnection *conn,
+                                  const gchar *path,
+                                  TpHandle handle,
+                                  TpHandle initiator_handle,
+                                  TpFileTransferState state,
+                                  const gchar *content_type,
+                                  const gchar *filename,
+                                  guint64 size,
+                                  TpFileHashType content_hash_type,
+                                  const gchar *content_hash,
+                                  const gchar *description,
+                                  guint64 date,
+                                  guint64 initial_offset,
+                                  GabbleBytestreamIface *bytestream)
+
+{
+  return g_object_new (GABBLE_TYPE_FILE_TRANSFER_CHANNEL,
+      "connection", conn,
+      "object-path", path,
+      "handle", handle,
+      "initiator-handle", initiator_handle,
+      "state", state,
+      "content-type", content_type,
+      "filename", filename,
+      "size", size,
+      "content-hash-type", content_hash_type,
+      "content-hash", content_hash,
+      "description", description,
+      "date", date,
+      "initial-offset", initial_offset,
+      "bytestream", bytestream,
+      NULL);
+}
diff --git a/src/file-transfer-channel.h b/src/file-transfer-channel.h
new file mode 100644
index 0000000..cf1385c
--- /dev/null
+++ b/src/file-transfer-channel.h
@@ -0,0 +1,78 @@
+/*
+ * gabble-file-transfer-channel.h - Header for GabbleFileTransferChannel
+ * Copyright (C) 2009 Collabora Ltd.
+ *   @author: Guillaume Desmottes <guillaume.desmottes at collabora.co.uk>
+ *
+ * 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
+ */
+
+#ifndef __GABBLE_FILE_TRANSFER_CHANNEL_H__
+#define __GABBLE_FILE_TRANSFER_CHANNEL_H__
+
+#include <glib-object.h>
+
+#include <extensions/_gen/svc.h>
+#include <extensions/_gen/interfaces.h>
+#include <extensions/_gen/enums.h>
+
+G_BEGIN_DECLS
+
+typedef struct _GabbleFileTransferChannel GabbleFileTransferChannel;
+typedef struct _GabbleFileTransferChannelClass GabbleFileTransferChannelClass;
+typedef struct _GabbleFileTransferChannelPrivate GabbleFileTransferChannelPrivate;
+
+struct _GabbleFileTransferChannelClass {
+    GObjectClass parent_class;
+    TpDBusPropertiesMixinClass dbus_props_class;
+};
+
+struct _GabbleFileTransferChannel {
+    GObject parent;
+
+    GabbleFileTransferChannelPrivate *priv;
+};
+
+GType gabble_file_transfer_channel_get_type (void);
+
+/* TYPE MACROS */
+#define GABBLE_TYPE_FILE_TRANSFER_CHANNEL \
+  (gabble_file_transfer_channel_get_type ())
+#define GABBLE_FILE_TRANSFER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_CAST((obj), GABBLE_TYPE_FILE_TRANSFER_CHANNEL, GabbleFileTransferChannel))
+#define GABBLE_FILE_TRANSFER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_CAST((klass), GABBLE_TYPE_FILE_TRANSFER_CHANNEL, \
+                           GabbleFileTransferChannelClass))
+#define GABBLE_IS_FILE_TRANSFER_CHANNEL(obj) \
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), GABBLE_TYPE_FILE_TRANSFER_CHANNEL))
+#define GABBLE_IS_FILE_TRANSFER_CHANNEL_CLASS(klass) \
+  (G_TYPE_CHECK_CLASS_TYPE((klass), GABBLE_TYPE_FILE_TRANSFER_CHANNEL))
+#define GABBLE_FILE_TRANSFER_CHANNEL_GET_CLASS(obj) \
+  (G_TYPE_INSTANCE_GET_CLASS ((obj), GABBLE_TYPE_FILE_TRANSFER_CHANNEL, \
+                              GabbleFileTransferChannelClass))
+
+GabbleFileTransferChannel *
+gabble_file_transfer_channel_new (GabbleConnection *conn, const gchar *path,
+    TpHandle handle, TpHandle initiator_handle, TpFileTransferState state,
+    const gchar *content_type, const gchar *filename, guint64 size,
+    TpFileHashType content_hash_type, const gchar *content_hash,
+    const gchar *description, guint64 date, guint64 initial_offset,
+    GabbleBytestreamIface *bytestream);
+
+gboolean gabble_file_transfer_channel_offer_file (
+    GabbleFileTransferChannel *self, GError **error);
+
+G_END_DECLS
+
+#endif /* #ifndef __GABBLE_FILE_TRANSFER_CHANNEL_H__*/
-- 
1.5.6.5




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