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+/*
+ * empathy-ft-handler.c - Source for EmpathyFTHandler
+ * Copyright (C) 2009 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
+ *
+ * Author: Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
+ */
+
+/* empathy-ft-handler.c */
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include <telepathy-glib/util.h>
+#include <telepathy-glib/dbus.h>
+
+#include "empathy-ft-handler.h"
+#include "empathy-tp-contact-factory.h"
+#include "empathy-dispatcher.h"
+#include "empathy-marshal.h"
+#include "empathy-time.h"
+#include "empathy-utils.h"
+
+#define DEBUG_FLAG EMPATHY_DEBUG_FT
+#include "empathy-debug.h"
+
+/**
+ * SECTION:empathy-ft-handler
+ * @title: EmpathyFTHandler
+ * @short_description: an object representing a File Transfer
+ * @include: libempathy/empathy-ft-handler
+ *
+ * #EmpathyFTHandler is the object which represents a File Transfer with all
+ * its properties.
+ * The creation of an #EmpathyFTHandler is done with
+ * empathy_ft_handler_new_outgoing() or empathy_ft_handler_new_incoming(),
+ * even though clients should not need to call them directly, as
+ * #EmpathyFTFactory does it for them. Remember that for the file transfer
+ * to work with an incoming handler,
+ * empathy_ft_handler_incoming_set_destination() should be called after
+ * empathy_ft_handler_new_incoming(). #EmpathyFTFactory does this
+ * automatically.
+ * It's important to note that, as the creation of the handlers is async, once
+ * an handler is created, it already has all the interesting properties set,
+ * like filename, total bytes, content type and so on, making it useful
+ * to be displayed in an UI.
+ * The transfer API works like a state machine; it has three signals,
+ * ::transfer-started, ::transfer-progress, ::transfer-done, which will be
+ * emitted in the relevant phases.
+ * In addition, if the handler is created with checksumming enabled,
+ * other three signals (::hashing-started, ::hashing-progress, ::hashing-done)
+ * will be emitted before or after the transfer, depending on the direction
+ * (respectively outgoing and incoming) of the handler.
+ * At any time between the call to empathy_ft_handler_start_transfer() and
+ * the last signal, a ::transfer-error can be emitted, indicating that an
+ * error has happened in the operation. The message of the error is localized
+ * to use in an UI.
+ */
+
+G_DEFINE_TYPE (EmpathyFTHandler, empathy_ft_handler, G_TYPE_OBJECT)
+
+#define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyFTHandler)
+
+#define BUFFER_SIZE 4096
+
+enum {
+ PROP_TP_FILE = 1,
+ PROP_G_FILE,
+ PROP_CONTACT,
+ PROP_CONTENT_TYPE,
+ PROP_DESCRIPTION,
+ PROP_FILENAME,
+ PROP_MODIFICATION_TIME,
+ PROP_TOTAL_BYTES,
+ PROP_TRANSFERRED_BYTES
+};
+
+enum {
+ HASHING_STARTED,
+ HASHING_PROGRESS,
+ HASHING_DONE,
+ TRANSFER_STARTED,
+ TRANSFER_PROGRESS,
+ TRANSFER_DONE,
+ TRANSFER_ERROR,
+ LAST_SIGNAL
+};
+
+typedef struct {
+ GInputStream *stream;
+ GError *error /* comment to make the style checker happy */;
+ guchar *buffer;
+ GChecksum *checksum;
+ gssize total_read;
+ guint64 total_bytes;
+ EmpathyFTHandler *handler;
+} HashingData;
+
+typedef struct {
+ EmpathyFTHandlerReadyCallback callback;
+ gpointer user_data;
+ EmpathyFTHandler *handler;
+} CallbacksData;
+
+/* private data */
+typedef struct {
+ gboolean dispose_run;
+
+ GFile *gfile;
+ EmpathyTpFile *tpfile;
+ GCancellable *cancellable;
+ gboolean use_hash;
+
+ EmpathyDispatcher *dispatcher;
+
+ /* request for the new transfer */
+ GHashTable *request;
+
+ /* transfer properties */
+ EmpathyContact *contact;
+ gchar *content_type;
+ gchar *filename;
+ gchar *description;
+ guint64 total_bytes;
+ guint64 transferred_bytes;
+ guint64 mtime;
+ gchar *content_hash;
+ TpFileHashType content_hash_type;
+
+ /* time and speed */
+ gdouble speed;
+ guint remaining_time;
+ time_t last_update_time;
+
+ gboolean is_completed;
+} EmpathyFTHandlerPriv;
+
+static guint signals[LAST_SIGNAL] = { 0 };
+
+static gboolean do_hash_job_incoming (GIOSchedulerJob *job,
+ GCancellable *cancellable, gpointer user_data);
+
+/* GObject implementations */
+static void
+do_get_property (GObject *object,
+ guint property_id,
+ GValue *value,
+ GParamSpec *pspec)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (object);
+
+ switch (property_id)
+ {
+ case PROP_CONTACT:
+ g_value_set_object (value, priv->contact);
+ break;
+ case PROP_CONTENT_TYPE:
+ g_value_set_string (value, priv->content_type);
+ break;
+ case PROP_DESCRIPTION:
+ g_value_set_string (value, priv->description);
+ break;
+ case PROP_FILENAME:
+ g_value_set_string (value, priv->filename);
+ break;
+ case PROP_MODIFICATION_TIME:
+ g_value_set_uint64 (value, priv->mtime);
+ break;
+ case PROP_TOTAL_BYTES:
+ g_value_set_uint64 (value, priv->total_bytes);
+ break;
+ case PROP_TRANSFERRED_BYTES:
+ g_value_set_uint64 (value, priv->transferred_bytes);
+ break;
+ case PROP_G_FILE:
+ g_value_set_object (value, priv->gfile);
+ break;
+ case PROP_TP_FILE:
+ g_value_set_object (value, priv->tpfile);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+do_set_property (GObject *object,
+ guint property_id,
+ const GValue *value,
+ GParamSpec *pspec)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (object);
+
+ switch (property_id)
+ {
+ case PROP_CONTACT:
+ priv->contact = g_value_dup_object (value);
+ break;
+ case PROP_CONTENT_TYPE:
+ priv->content_type = g_value_dup_string (value);
+ break;
+ case PROP_DESCRIPTION:
+ priv->description = g_value_dup_string (value);
+ break;
+ case PROP_FILENAME:
+ priv->filename = g_value_dup_string (value);
+ break;
+ case PROP_MODIFICATION_TIME:
+ priv->mtime = g_value_get_uint64 (value);
+ break;
+ case PROP_TOTAL_BYTES:
+ priv->total_bytes = g_value_get_uint64 (value);
+ break;
+ case PROP_TRANSFERRED_BYTES:
+ priv->transferred_bytes = g_value_get_uint64 (value);
+ break;
+ case PROP_G_FILE:
+ priv->gfile = g_value_dup_object (value);
+ break;
+ case PROP_TP_FILE:
+ priv->tpfile = g_value_dup_object (value);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+ }
+}
+
+static void
+do_dispose (GObject *object)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (object);
+
+ if (priv->dispose_run)
+ return;
+
+ priv->dispose_run = TRUE;
+
+ if (priv->contact != NULL) {
+ g_object_unref (priv->contact);
+ priv->contact = NULL;
+ }
+
+ if (priv->gfile != NULL) {
+ g_object_unref (priv->gfile);
+ priv->gfile = NULL;
+ }
+
+ if (priv->tpfile != NULL) {
+ empathy_tp_file_close (priv->tpfile);
+ g_object_unref (priv->tpfile);
+ priv->tpfile = NULL;
+ }
+
+ if (priv->cancellable != NULL) {
+ g_object_unref (priv->cancellable);
+ priv->cancellable = NULL;
+ }
+
+ if (priv->request != NULL)
+ {
+ g_hash_table_unref (priv->request);
+ priv->request = NULL;
+ }
+
+ if (priv->dispatcher != NULL)
+ {
+ g_object_unref (priv->dispatcher);
+ priv->dispatcher = NULL;
+ }
+
+ G_OBJECT_CLASS (empathy_ft_handler_parent_class)->dispose (object);
+}
+
+static void
+do_finalize (GObject *object)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (object);
+
+ DEBUG ("%p", object);
+
+ g_free (priv->content_type);
+ priv->content_type = NULL;
+
+ g_free (priv->filename);
+ priv->filename = NULL;
+
+ g_free (priv->description);
+ priv->description = NULL;
+
+ g_free (priv->content_hash);
+ priv->content_hash = NULL;
+
+ G_OBJECT_CLASS (empathy_ft_handler_parent_class)->finalize (object);
+}
+
+static void
+empathy_ft_handler_class_init (EmpathyFTHandlerClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ GParamSpec *param_spec;
+
+ g_type_class_add_private (klass, sizeof (EmpathyFTHandlerPriv));
+
+ object_class->get_property = do_get_property;
+ object_class->set_property = do_set_property;
+ object_class->dispose = do_dispose;
+ object_class->finalize = do_finalize;
+
+ /* properties */
+
+ /**
+ * EmpathyFTHandler:contact:
+ *
+ * The remote #EmpathyContact for the transfer
+ */
+ param_spec = g_param_spec_object ("contact",
+ "contact", "The remote contact",
+ EMPATHY_TYPE_CONTACT,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
+ g_object_class_install_property (object_class, PROP_CONTACT, param_spec);
+
+ /**
+ * EmpathyFTHandler:content-type:
+ *
+ * The content type of the file being transferred
+ */
+ param_spec = g_param_spec_string ("content-type",
+ "content-type", "The content type of the file", NULL,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_CONTENT_TYPE, param_spec);
+
+ /**
+ * EmpathyFTHandler:description:
+ *
+ * The description of the file being transferred
+ */
+ param_spec = g_param_spec_string ("description",
+ "description", "The description of the file", NULL,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_DESCRIPTION, param_spec);
+
+ /**
+ * EmpathyFTHandler:filename:
+ *
+ * The name of the file being transferred
+ */
+ param_spec = g_param_spec_string ("filename",
+ "filename", "The name of the file", NULL,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_FILENAME, param_spec);
+
+ /**
+ * EmpathyFTHandler:modification-time:
+ *
+ * The modification time of the file being transferred
+ */
+ param_spec = g_param_spec_uint64 ("modification-time",
+ "modification-time", "The mtime of the file", 0,
+ G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_MODIFICATION_TIME, param_spec);
+
+ /**
+ * EmpathyFTHandler:total-bytes:
+ *
+ * The size (in bytes) of the file being transferred
+ */
+ param_spec = g_param_spec_uint64 ("total-bytes",
+ "total-bytes", "The size of the file", 0,
+ G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_TOTAL_BYTES, param_spec);
+
+ /**
+ * EmpathyFTHandler:transferred-bytes:
+ *
+ * The number of the bytes already transferred
+ */
+ param_spec = g_param_spec_uint64 ("transferred-bytes",
+ "transferred-bytes", "The number of bytes already transferred", 0,
+ G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class,
+ PROP_TRANSFERRED_BYTES, param_spec);
+
+ /**
+ * EmpathyFTHandler:gfile:
+ *
+ * The #GFile object where the transfer actually happens
+ */
+ param_spec = g_param_spec_object ("gfile",
+ "gfile", "The GFile we're handling",
+ G_TYPE_FILE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
+ g_object_class_install_property (object_class, PROP_G_FILE, param_spec);
+
+ /**
+ * EmpathyFTHandler:tp-file:
+ *
+ * The underlying #EmpathyTpFile managing the transfer
+ */
+ param_spec = g_param_spec_object ("tp-file",
+ "tp-file", "The file's channel wrapper",
+ EMPATHY_TYPE_TP_FILE,
+ G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
+ g_object_class_install_property (object_class, PROP_TP_FILE, param_spec);
+
+ /* signals */
+
+ /**
+ * EmpathyFTHandler::transfer-started
+ * @handler: the object which has received the signal
+ * @tp_file: the #EmpathyTpFile for which the transfer has started
+ *
+ * This signal is emitted when the actual transfer starts.
+ */
+ signals[TRANSFER_STARTED] =
+ g_signal_new ("transfer-started", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE,
+ 1, EMPATHY_TYPE_TP_FILE);
+
+ /**
+ * EmpathyFTHandler::transfer-done
+ * @handler: the object which has received the signal
+ * @tp_file: the #EmpathyTpFile for which the transfer has started
+ *
+ * This signal will be emitted when the actual transfer is completed
+ * successfully.
+ */
+ signals[TRANSFER_DONE] =
+ g_signal_new ("transfer-done", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__OBJECT,
+ G_TYPE_NONE,
+ 1, EMPATHY_TYPE_TP_FILE);
+
+ /**
+ * EmpathyFTHandler::transfer-error
+ * @handler: the object which has received the signal
+ * @error: a #GError
+ *
+ * This signal can be emitted anytime between the call to
+ * empathy_ft_handler_start_transfer() and the last expected signal
+ * (::transfer-done or ::hashing-done), and it's guaranteed to be the last
+ * signal coming from the handler, meaning that no other operation will
+ * take place after this signal.
+ */
+ signals[TRANSFER_ERROR] =
+ g_signal_new ("transfer-error", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__POINTER,
+ G_TYPE_NONE,
+ 1, G_TYPE_POINTER);
+
+ /**
+ * EmpathyFTHandler::transfer-progress
+ * @handler: the object which has received the signal
+ * @current_bytes: the bytes currently transferred
+ * @total_bytes: the total bytes of the handler
+ * @remaining_time: the number of seconds remaining for the transfer
+ * to be completed
+ * @speed: the current speed of the transfer (in KB/s)
+ *
+ * This signal is emitted to notify clients of the progress of the
+ * transfer.
+ */
+ signals[TRANSFER_PROGRESS] =
+ g_signal_new ("transfer-progress", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ _empathy_marshal_VOID__UINT64_UINT64_UINT_DOUBLE,
+ G_TYPE_NONE,
+ 4, G_TYPE_UINT64, G_TYPE_UINT64, G_TYPE_UINT, G_TYPE_DOUBLE);
+
+ /**
+ * EmpathyFTHandler::hashing-started
+ * @handler: the object which has received the signal
+ *
+ * This signal is emitted when the hashing operation of the handler
+ * is started. Note that this might happen or not, depending on the CM
+ * and remote contact capabilities. Clients shoud use
+ * empathy_ft_handler_get_use_hash() before calling
+ * empathy_ft_handler_start_transfer() to know whether they should connect
+ * to this signal.
+ */
+ signals[HASHING_STARTED] =
+ g_signal_new ("hashing-started", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+
+ /**
+ * EmpathyFTHandler::hashing-progress
+ * @handler: the object which has received the signal
+ * @current_bytes: the bytes currently hashed
+ * @total_bytes: the total bytes of the handler
+ *
+ * This signal is emitted to notify clients of the progress of the
+ * hashing operation.
+ */
+ signals[HASHING_PROGRESS] =
+ g_signal_new ("hashing-progress", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ _empathy_marshal_VOID__UINT64_UINT64,
+ G_TYPE_NONE,
+ 2, G_TYPE_UINT64, G_TYPE_UINT64);
+
+ /**
+ * EmpathyFTHandler::hashing-done
+ * @handler: the object which has received the signal
+ *
+ * This signal is emitted when the hashing operation of the handler
+ * is completed.
+ */
+ signals[HASHING_DONE] =
+ g_signal_new ("hashing-done", G_TYPE_FROM_CLASS (klass),
+ G_SIGNAL_RUN_LAST, 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+}
+
+static void
+empathy_ft_handler_init (EmpathyFTHandler *self)
+{
+ EmpathyFTHandlerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
+ EMPATHY_TYPE_FT_HANDLER, EmpathyFTHandlerPriv);
+
+ self->priv = priv;
+ priv->cancellable = g_cancellable_new ();
+ priv->dispatcher = empathy_dispatcher_dup_singleton ();
+}
+
+/* private functions */
+
+static void
+hash_data_free (HashingData *data)
+{
+ g_free (data->buffer);
+
+ if (data->stream != NULL)
+ g_object_unref (data->stream);
+
+ if (data->checksum != NULL)
+ g_checksum_free (data->checksum);
+
+ if (data->error != NULL)
+ g_error_free (data->error);
+
+ if (data->handler != NULL)
+ g_object_unref (data->handler);
+
+ g_slice_free (HashingData, data);
+}
+
+static GChecksumType
+tp_file_hash_to_g_checksum (TpFileHashType type)
+{
+ GChecksumType retval;
+
+ switch (type)
+ {
+ case TP_FILE_HASH_TYPE_MD5:
+ retval = G_CHECKSUM_MD5;
+ break;
+ case TP_FILE_HASH_TYPE_SHA1:
+ retval = G_CHECKSUM_SHA1;
+ break;
+ case TP_FILE_HASH_TYPE_SHA256:
+ retval = G_CHECKSUM_SHA256;
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ return retval;
+}
+
+static void
+check_hash_incoming (EmpathyFTHandler *handler)
+{
+ HashingData *hash_data;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ if (!EMP_STR_EMPTY (priv->content_hash))
+ {
+ hash_data = g_slice_new0 (HashingData);
+ hash_data->total_bytes = priv->total_bytes;
+ hash_data->handler = g_object_ref (handler);
+ hash_data->checksum = g_checksum_new
+ (tp_file_hash_to_g_checksum (priv->content_hash_type));
+
+ g_signal_emit (handler, signals[HASHING_STARTED], 0);
+
+ g_io_scheduler_push_job (do_hash_job_incoming, hash_data, NULL,
+ G_PRIORITY_DEFAULT, priv->cancellable);
+ }
+}
+
+static void
+emit_error_signal (EmpathyFTHandler *handler,
+ const GError *error)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ if (!g_cancellable_is_cancelled (priv->cancellable))
+ g_cancellable_cancel (priv->cancellable);
+
+ g_signal_emit (handler, signals[TRANSFER_ERROR], 0, error);
+}
+
+static void
+ft_transfer_operation_callback (EmpathyTpFile *tp_file,
+ const GError *error,
+ gpointer user_data)
+{
+ EmpathyFTHandler *handler = user_data;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ DEBUG ("Transfer operation callback, error %p", error);
+
+ if (error != NULL)
+ {
+ emit_error_signal (handler, error);
+ }
+ else
+ {
+ priv->is_completed = TRUE;
+ g_signal_emit (handler, signals[TRANSFER_DONE], 0, tp_file);
+
+ empathy_tp_file_close (tp_file);
+
+ if (empathy_ft_handler_is_incoming (handler) && priv->use_hash)
+ {
+ check_hash_incoming (handler);
+ }
+ }
+}
+
+static void
+update_remaining_time_and_speed (EmpathyFTHandler *handler,
+ guint64 transferred_bytes)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+ time_t elapsed_time, current_time;
+ guint64 transferred, last_transferred_bytes;
+ gdouble speed;
+ gint remaining_time;
+
+ last_transferred_bytes = priv->transferred_bytes;
+ priv->transferred_bytes = transferred_bytes;
+
+ current_time = empathy_time_get_current ();
+ elapsed_time = current_time - priv->last_update_time;
+
+ if (elapsed_time >= 1)
+ {
+ transferred = transferred_bytes - last_transferred_bytes;
+ speed = (gdouble) transferred / (gdouble) elapsed_time;
+ remaining_time = (priv->total_bytes - priv->transferred_bytes) / speed;
+ priv->speed = speed;
+ priv->remaining_time = remaining_time;
+ priv->last_update_time = current_time;
+ }
+}
+
+static void
+ft_transfer_progress_callback (EmpathyTpFile *tp_file,
+ guint64 transferred_bytes,
+ gpointer user_data)
+{
+ EmpathyFTHandler *handler = user_data;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ if (empathy_ft_handler_is_cancelled (handler))
+ return;
+
+ if (transferred_bytes == 0)
+ {
+ priv->last_update_time = empathy_time_get_current ();
+ g_signal_emit (handler, signals[TRANSFER_STARTED], 0, tp_file);
+ }
+
+ if (priv->transferred_bytes != transferred_bytes)
+ {
+ update_remaining_time_and_speed (handler, transferred_bytes);
+
+ g_signal_emit (handler, signals[TRANSFER_PROGRESS], 0,
+ transferred_bytes, priv->total_bytes, priv->remaining_time,
+ priv->speed);
+ }
+}
+
+static void
+ft_handler_create_channel_cb (EmpathyDispatchOperation *operation,
+ const GError *error,
+ gpointer user_data)
+{
+ EmpathyFTHandler *handler = user_data;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+ GError *my_error = (GError *) error;
+
+ DEBUG ("Dispatcher create channel CB");
+
+ if (my_error == NULL)
+ {
+ g_cancellable_set_error_if_cancelled (priv->cancellable, &my_error);
+ }
+
+ if (my_error != NULL)
+ {
+ emit_error_signal (handler, my_error);
+
+ if (my_error != error)
+ g_clear_error (&my_error);
+
+ return;
+ }
+
+ priv->tpfile = g_object_ref
+ (empathy_dispatch_operation_get_channel_wrapper (operation));
+
+ empathy_tp_file_offer (priv->tpfile, priv->gfile, priv->cancellable,
+ ft_transfer_progress_callback, handler,
+ ft_transfer_operation_callback, handler);
+
+ empathy_dispatch_operation_claim (operation);
+}
+
+static void
+ft_handler_push_to_dispatcher (EmpathyFTHandler *handler)
+{
+ TpConnection *connection;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ DEBUG ("Pushing request to the dispatcher");
+
+ connection = empathy_contact_get_connection (priv->contact);
+
+ /* I want to own a reference to the request, and destroy it later */
+ empathy_dispatcher_create_channel (priv->dispatcher, connection,
+ g_hash_table_ref (priv->request), ft_handler_create_channel_cb, handler);
+}
+
+static void
+ft_handler_populate_outgoing_request (EmpathyFTHandler *handler)
+{
+ guint contact_handle;
+ GHashTable *request;
+ GValue *value;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ request = priv->request = g_hash_table_new_full (g_str_hash, g_str_equal,
+ NULL, (GDestroyNotify) tp_g_value_slice_free);
+
+ contact_handle = empathy_contact_get_handle (priv->contact);
+
+ /* org.freedesktop.Telepathy.Channel.ChannelType */
+ value = tp_g_value_slice_new_string (TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER);
+ g_hash_table_insert (request, TP_IFACE_CHANNEL ".ChannelType", value);
+
+ /* org.freedesktop.Telepathy.Channel.TargetHandleType */
+ value = tp_g_value_slice_new_uint (TP_HANDLE_TYPE_CONTACT);
+ g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandleType", value);
+
+ /* org.freedesktop.Telepathy.Channel.TargetHandle */
+ value = tp_g_value_slice_new_uint (contact_handle);
+ g_hash_table_insert (request, TP_IFACE_CHANNEL ".TargetHandle", value);
+
+ /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentType */
+ value = tp_g_value_slice_new_string (priv->content_type);
+ g_hash_table_insert (request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentType", value);
+
+ /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Filename */
+ value = tp_g_value_slice_new_string (priv->filename);
+ g_hash_table_insert (request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Filename", value);
+
+ /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Size */
+ value = tp_g_value_slice_new_uint64 (priv->total_bytes);
+ g_hash_table_insert (request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Size", value);
+
+ /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.Date */
+ value = tp_g_value_slice_new_uint64 ((guint64) priv->mtime);
+ g_hash_table_insert (request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".Date", value);
+}
+
+static gboolean
+hash_job_done (gpointer user_data)
+{
+ HashingData *hash_data = user_data;
+ EmpathyFTHandler *handler = hash_data->handler;
+ EmpathyFTHandlerPriv *priv;
+ GError *error = NULL;
+ GValue *value;
+
+ DEBUG ("Closing stream after hashing.");
+
+ priv = GET_PRIV (handler);
+
+ if (hash_data->error != NULL)
+ {
+ error = hash_data->error;
+ goto cleanup;
+ }
+
+ DEBUG ("Got file hash %s", g_checksum_get_string (hash_data->checksum));
+
+ if (empathy_ft_handler_is_incoming (handler))
+ {
+ if (g_strcmp0 (g_checksum_get_string (hash_data->checksum),
+ priv->content_hash))
+ {
+ DEBUG ("Hash mismatch when checking incoming handler: "
+ "received %s, calculated %s", priv->content_hash,
+ g_checksum_get_string (hash_data->checksum));
+
+ error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
+ EMPATHY_FT_ERROR_HASH_MISMATCH,
+ _("The hash of the received file and the "
+ "sent one do not match"));
+ goto cleanup;
+ }
+ else
+ {
+ DEBUG ("Hash verification matched, received %s, calculated %s",
+ priv->content_hash,
+ g_checksum_get_string (hash_data->checksum));
+ }
+ }
+ else
+ {
+ /* set the checksum in the request...
+ * org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentHash
+ */
+ value = tp_g_value_slice_new_string
+ (g_checksum_get_string (hash_data->checksum));
+ g_hash_table_insert (priv->request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentHash", value);
+ }
+
+cleanup:
+
+ if (error != NULL)
+ {
+ emit_error_signal (handler, error);
+ g_clear_error (&error);
+ }
+ else
+ {
+ g_signal_emit (handler, signals[HASHING_DONE], 0);
+
+ if (!empathy_ft_handler_is_incoming (handler))
+ /* the request is complete now, push it to the dispatcher */
+ ft_handler_push_to_dispatcher (handler);
+ }
+
+ hash_data_free (hash_data);
+
+ return FALSE;
+}
+
+static gboolean
+emit_hashing_progress (gpointer user_data)
+{
+ HashingData *hash_data = user_data;
+
+ g_signal_emit (hash_data->handler, signals[HASHING_PROGRESS], 0,
+ (guint64) hash_data->total_read, (guint64) hash_data->total_bytes);
+
+ return FALSE;
+}
+
+static gboolean
+do_hash_job (GIOSchedulerJob *job,
+ GCancellable *cancellable,
+ gpointer user_data)
+{
+ HashingData *hash_data = user_data;
+ gssize bytes_read;
+ EmpathyFTHandlerPriv *priv;
+ GError *error = NULL;
+
+ priv = GET_PRIV (hash_data->handler);
+
+again:
+ if (hash_data->buffer == NULL)
+ hash_data->buffer = g_malloc0 (BUFFER_SIZE);
+
+ bytes_read = g_input_stream_read (hash_data->stream, hash_data->buffer,
+ BUFFER_SIZE, cancellable, &error);
+ if (error != NULL)
+ goto out;
+
+ hash_data->total_read += bytes_read;
+
+ /* we now have the chunk */
+ if (bytes_read > 0)
+ {
+ g_checksum_update (hash_data->checksum, hash_data->buffer, bytes_read);
+ g_io_scheduler_job_send_to_mainloop_async (job, emit_hashing_progress,
+ hash_data, NULL);
+
+ g_free (hash_data->buffer);
+ hash_data->buffer = NULL;
+
+ goto again;
+ }
+ else
+ {
+ g_input_stream_close (hash_data->stream, cancellable, &error);
+ }
+
+out:
+ if (error != NULL)
+ hash_data->error = error;
+
+ g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
+ hash_data, NULL);
+
+ return FALSE;
+}
+
+static gboolean
+do_hash_job_incoming (GIOSchedulerJob *job,
+ GCancellable *cancellable,
+ gpointer user_data)
+{
+ HashingData *hash_data = user_data;
+ EmpathyFTHandler *handler = hash_data->handler;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+ GError *error = NULL;
+
+ DEBUG ("checking integrity for incoming handler");
+
+ /* need to get the stream first */
+ hash_data->stream =
+ G_INPUT_STREAM (g_file_read (priv->gfile, cancellable, &error));
+
+ if (error != NULL)
+ {
+ hash_data->error = error;
+ g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
+ hash_data, NULL);
+ return FALSE;
+ }
+
+ return do_hash_job (job, cancellable, user_data);
+}
+
+static void
+ft_handler_read_async_cb (GObject *source,
+ GAsyncResult *res,
+ gpointer user_data)
+{
+ GFileInputStream *stream;
+ GError *error = NULL;
+ HashingData *hash_data;
+ GValue *value;
+ EmpathyFTHandler *handler = user_data;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ DEBUG ("GFile read async CB.");
+
+ stream = g_file_read_finish (priv->gfile, res, &error);
+ if (error != NULL)
+ {
+ emit_error_signal (handler, error);
+ g_clear_error (&error);
+
+ return;
+ }
+
+ hash_data = g_slice_new0 (HashingData);
+ hash_data->stream = G_INPUT_STREAM (stream);
+ hash_data->total_bytes = priv->total_bytes;
+ hash_data->handler = g_object_ref (handler);
+ /* FIXME: MD5 is the only ContentHashType supported right now */
+ hash_data->checksum = g_checksum_new (G_CHECKSUM_MD5);
+
+ /* org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentHashType */
+ value = tp_g_value_slice_new_uint (TP_FILE_HASH_TYPE_MD5);
+ g_hash_table_insert (priv->request,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentHashType", value);
+
+ g_signal_emit (handler, signals[HASHING_STARTED], 0);
+
+ g_io_scheduler_push_job (do_hash_job, hash_data, NULL,
+ G_PRIORITY_DEFAULT, priv->cancellable);
+}
+
+static void
+callbacks_data_free (gpointer user_data)
+{
+ CallbacksData *data = user_data;
+
+ if (data->handler != NULL)
+ g_object_unref (data->handler);
+
+ g_slice_free (CallbacksData, data);
+}
+
+static void
+set_content_hash_type_from_classes (EmpathyFTHandler *handler,
+ GList *classes)
+{
+ GValueArray *class;
+ GValue *v;
+ GList *l;
+ GArray *possible_values;
+ guint value;
+ GHashTable *fprops;
+ gboolean valid;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ possible_values = g_array_new (TRUE, TRUE, sizeof (guint));
+
+ for (l = classes; l != NULL; l = l->next)
+ {
+ class = l->data;
+ v = g_value_array_get_nth (class, 0);
+ fprops = g_value_get_boxed (v);
+
+ value = tp_asv_get_uint32
+ (fprops, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentHashType",
+ &valid);
+
+ if (valid)
+ g_array_append_val (possible_values, value);
+ }
+
+ if (possible_values->len == 0)
+ {
+ /* there are no channel classes with hash support, disable it. */
+ priv->use_hash = FALSE;
+ priv->content_hash_type = TP_FILE_HASH_TYPE_NONE;
+
+ goto out;
+ }
+
+ priv->use_hash = TRUE;
+
+ if (possible_values->len == 1)
+ {
+ priv->content_hash_type = g_array_index (possible_values, guint, 0);
+ }
+ else
+ {
+ /* order the array and pick the first non zero, so that MD5
+ * is the preferred value.
+ */
+ g_array_sort (possible_values, empathy_uint_compare);
+
+ if (g_array_index (possible_values, guint, 0) == 0)
+ priv->content_hash_type = g_array_index (possible_values, guint, 1);
+ else
+ priv->content_hash_type = g_array_index (possible_values, guint, 0);
+ }
+
+out:
+ g_array_free (possible_values, TRUE);
+
+ DEBUG ("Hash enabled %s; setting content hash type as %u",
+ priv->use_hash ? "True" : "False", priv->content_hash_type);
+}
+
+static void
+find_ft_channel_classes_cb (GList *channel_classes,
+ gpointer user_data)
+{
+ CallbacksData *data = user_data;
+ EmpathyFTHandler *handler = data->handler;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+ GError *myerr = NULL;
+
+ if (channel_classes == NULL)
+ {
+ g_set_error_literal (&myerr, EMPATHY_FT_ERROR_QUARK,
+ EMPATHY_FT_ERROR_NOT_SUPPORTED,
+ _("File transfer not supported by remote contact"));
+
+ if (!g_cancellable_is_cancelled (priv->cancellable))
+ g_cancellable_cancel (priv->cancellable);
+
+ data->callback (handler, myerr, data->user_data);
+ g_clear_error (&myerr);
+ }
+ else
+ {
+ /* set whether we support hash and the type of it */
+ set_content_hash_type_from_classes (handler, channel_classes);
+
+ /* get back to the caller now */
+ data->callback (handler, NULL, data->user_data);
+ }
+
+ callbacks_data_free (data);
+}
+
+static void
+ft_handler_complete_request (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ /* populate the request table with all the known properties */
+ ft_handler_populate_outgoing_request (handler);
+
+ if (priv->use_hash)
+ /* start hashing the file */
+ g_file_read_async (priv->gfile, G_PRIORITY_DEFAULT,
+ priv->cancellable, ft_handler_read_async_cb, handler);
+ else
+ /* push directly the handler to the dispatcher */
+ ft_handler_push_to_dispatcher (handler);
+}
+
+static void
+ft_handler_gfile_ready_cb (GObject *source,
+ GAsyncResult *res,
+ CallbacksData *cb_data)
+{
+ GFileInfo *info;
+ GError *error = NULL;
+ GTimeVal mtime;
+ EmpathyFTHandlerPriv *priv = GET_PRIV (cb_data->handler);
+
+ DEBUG ("Got GFileInfo.");
+
+ info = g_file_query_info_finish (priv->gfile, res, &error);
+
+ if (error != NULL)
+ goto out;
+
+ priv->content_type = g_strdup (g_file_info_get_content_type (info));
+ priv->filename = g_strdup (g_file_info_get_display_name (info));
+ priv->total_bytes = g_file_info_get_size (info);
+ g_file_info_get_modification_time (info, &mtime);
+ priv->mtime = mtime.tv_sec;
+ priv->transferred_bytes = 0;
+ priv->description = NULL;
+
+ g_object_unref (info);
+
+out:
+ if (error != NULL)
+ {
+ if (!g_cancellable_is_cancelled (priv->cancellable))
+ g_cancellable_cancel (priv->cancellable);
+
+ cb_data->callback (cb_data->handler, error, cb_data->user_data);
+ g_error_free (error);
+
+ callbacks_data_free (cb_data);
+ }
+ else
+ {
+ /* see if FT/hashing are allowed */
+ empathy_dispatcher_find_requestable_channel_classes_async
+ (priv->dispatcher, empathy_contact_get_connection (priv->contact),
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, TP_HANDLE_TYPE_CONTACT,
+ find_ft_channel_classes_cb, cb_data,
+ TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER ".ContentHashType", NULL);
+ }
+}
+
+static void
+contact_factory_contact_cb (EmpathyTpContactFactory *factory,
+ EmpathyContact *contact,
+ const GError *error,
+ gpointer user_data,
+ GObject *weak_object)
+{
+ CallbacksData *cb_data = user_data;
+ EmpathyFTHandler *handler = EMPATHY_FT_HANDLER (weak_object);
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+
+ if (error != NULL)
+ {
+ if (!g_cancellable_is_cancelled (priv->cancellable))
+ g_cancellable_cancel (priv->cancellable);
+
+ cb_data->callback (handler, (GError *) error, cb_data->user_data);
+ callbacks_data_free (cb_data);
+ return;
+ }
+
+ priv->contact = contact;
+
+ cb_data->callback (handler, NULL, cb_data->user_data);
+}
+
+static void
+channel_get_all_properties_cb (TpProxy *proxy,
+ GHashTable *properties,
+ const GError *error,
+ gpointer user_data,
+ GObject *weak_object)
+{
+ CallbacksData *cb_data = user_data;
+ EmpathyFTHandler *handler = EMPATHY_FT_HANDLER (weak_object);
+ EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
+ EmpathyTpContactFactory *c_factory;
+ TpHandle c_handle;
+
+ if (error != NULL)
+ {
+ if (!g_cancellable_is_cancelled (priv->cancellable))
+ g_cancellable_cancel (priv->cancellable);
+
+ cb_data->callback (handler, (GError *) error, cb_data->user_data);
+
+ callbacks_data_free (cb_data);
+ return;
+ }
+
+ priv->total_bytes = g_value_get_uint64 (
+ g_hash_table_lookup (properties, "Size"));
+
+ priv->transferred_bytes = g_value_get_uint64 (
+ g_hash_table_lookup (properties, "TransferredBytes"));
+
+ priv->filename = g_value_dup_string (
+ g_hash_table_lookup (properties, "Filename"));
+
+ priv->content_hash = g_value_dup_string (
+ g_hash_table_lookup (properties, "ContentHash"));
+
+ priv->content_hash_type = g_value_get_uint (
+ g_hash_table_lookup (properties, "ContentHashType"));
+
+ priv->content_type = g_value_dup_string (
+ g_hash_table_lookup (properties, "ContentType"));
+
+ priv->description = g_value_dup_string (
+ g_hash_table_lookup (properties, "Description"));
+
+ c_factory = empathy_tp_contact_factory_dup_singleton
+ (tp_channel_borrow_connection (TP_CHANNEL (proxy)));
+ c_handle = tp_channel_get_handle (TP_CHANNEL (proxy), NULL);
+ empathy_tp_contact_factory_get_from_handle (c_factory, c_handle,
+ contact_factory_contact_cb, cb_data, callbacks_data_free,
+ G_OBJECT (handler));
+
+ g_object_unref (c_factory);
+}
+
+/* public methods */
+
+/**
+ * empathy_ft_handler_new_outgoing:
+ * @contact: the #EmpathyContact to send @source to
+ * @source: the #GFile to send
+ * @callback: callback to be called when the handler has been created
+ * @user_data: user data to be passed to @callback
+ *
+ * Triggers the creation of a new #EmpathyFTHandler for an outgoing transfer.
+ */
+void
+empathy_ft_handler_new_outgoing (EmpathyContact *contact,
+ GFile *source,
+ EmpathyFTHandlerReadyCallback callback,
+ gpointer user_data)
+{
+ EmpathyFTHandler *handler;
+ CallbacksData *data;
+ EmpathyFTHandlerPriv *priv;
+
+ DEBUG ("New handler outgoing");
+
+ g_return_if_fail (EMPATHY_IS_CONTACT (contact));
+ g_return_if_fail (G_IS_FILE (source));
+
+ handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
+ "contact", contact, "gfile", source, NULL);
+
+ priv = GET_PRIV (handler);
+
+ data = g_slice_new0 (CallbacksData);
+ data->callback = callback;
+ data->user_data = user_data;
+ data->handler = g_object_ref (handler);
+
+ /* start collecting info about the file */
+ g_file_query_info_async (priv->gfile,
+ G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME ","
+ G_FILE_ATTRIBUTE_STANDARD_SIZE ","
+ G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
+ G_FILE_ATTRIBUTE_TIME_MODIFIED,
+ G_FILE_QUERY_INFO_NONE, G_PRIORITY_DEFAULT,
+ NULL, (GAsyncReadyCallback) ft_handler_gfile_ready_cb, data);
+}
+
+/**
+ * empathy_ft_handler_new_incoming:
+ * @tp_file: the #EmpathyTpFile wrapping the incoming channel
+ * @callback: callback to be called when the handler has been created
+ * @user_data: user data to be passed to @callback
+ *
+ * Triggers the creation of a new #EmpathyFTHandler for an incoming transfer.
+ * Note that for the handler to be useful, you will have to set a destination
+ * file with empathy_ft_handler_incoming_set_destination() after the handler
+ * is ready.
+ */
+void
+empathy_ft_handler_new_incoming (EmpathyTpFile *tp_file,
+ EmpathyFTHandlerReadyCallback callback,
+ gpointer user_data)
+{
+ EmpathyFTHandler *handler;
+ TpChannel *channel;
+ CallbacksData *data;
+
+ g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
+
+ handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
+ "tp-file", tp_file, NULL);
+
+ g_object_get (tp_file, "channel", &channel, NULL);
+
+ data = g_slice_new0 (CallbacksData);
+ data->callback = callback;
+ data->user_data = user_data;
+ data->handler = g_object_ref (handler);
+
+ tp_cli_dbus_properties_call_get_all (channel,
+ -1, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER,
+ channel_get_all_properties_cb, data, NULL, G_OBJECT (handler));
+}
+
+/**
+ * empathy_ft_handler_start_transfer:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Starts the transfer machinery. After this call, the transfer and hashing
+ * signals will be emitted by the handler.
+ */
+void
+empathy_ft_handler_start_transfer (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
+
+ priv = GET_PRIV (handler);
+
+ if (priv->tpfile == NULL)
+ {
+ ft_handler_complete_request (handler);
+ }
+ else
+ {
+ /* TODO: add support for resume. */
+ empathy_tp_file_accept (priv->tpfile, 0, priv->gfile, priv->cancellable,
+ ft_transfer_progress_callback, handler,
+ ft_transfer_operation_callback, handler);
+ }
+}
+
+/**
+ * empathy_ft_handler_cancel_transfer:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Cancels an ongoing handler operation. Note that this doesn't destroy
+ * the object, which will keep all the properties, altough it won't be able
+ * to do any more I/O.
+ */
+void
+empathy_ft_handler_cancel_transfer (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
+
+ priv = GET_PRIV (handler);
+
+ /* if we don't have an EmpathyTpFile, we are hashing, so
+ * we can just cancel the GCancellable to stop it.
+ */
+ if (priv->tpfile == NULL)
+ g_cancellable_cancel (priv->cancellable);
+ else
+ empathy_tp_file_cancel (priv->tpfile);
+}
+
+/**
+ * empathy_ft_handler_incoming_set_destination:
+ * @handler: an #EmpathyFTHandler
+ * @destination: the #GFile where the transfer should be saved
+ *
+ * Sets the destination of the incoming handler to be @destination.
+ * Note that calling this method is mandatory before starting the transfer
+ * for incoming handlers.
+ */
+void
+empathy_ft_handler_incoming_set_destination (EmpathyFTHandler *handler,
+ GFile *destination)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
+ g_return_if_fail (G_IS_FILE (destination));
+
+ priv = GET_PRIV (handler);
+
+ g_object_set (handler, "gfile", destination, NULL);
+
+ /* check if hash is supported. if it isn't, set use_hash to FALSE
+ * anyway, so that clients won't be expecting us to checksum.
+ */
+ if (EMP_STR_EMPTY (priv->content_hash) ||
+ priv->content_hash_type == TP_FILE_HASH_TYPE_NONE)
+ priv->use_hash = FALSE;
+ else
+ priv->use_hash = TRUE;
+}
+
+/**
+ * empathy_ft_handler_get_filename:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the name of the file being transferred.
+ *
+ * Return value: the name of the file being transferred
+ */
+const char *
+empathy_ft_handler_get_filename (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
+
+ priv = GET_PRIV (handler);
+
+ return priv->filename;
+}
+
+/**
+ * empathy_ft_handler_get_content_type:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the content type of the file being transferred.
+ *
+ * Return value: the content type of the file being transferred
+ */
+const char *
+empathy_ft_handler_get_content_type (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
+
+ priv = GET_PRIV (handler);
+
+ return priv->content_type;
+}
+
+/**
+ * empathy_ft_handler_get_contact:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the remote #EmpathyContact at the other side of the transfer.
+ *
+ * Return value: the remote #EmpathyContact for @handler
+ */
+EmpathyContact *
+empathy_ft_handler_get_contact (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
+
+ priv = GET_PRIV (handler);
+
+ return priv->contact;
+}
+
+/**
+ * empathy_ft_handler_get_gfile:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the #GFile where the transfer is being read/saved.
+ *
+ * Return value: the #GFile where the transfer is being read/saved
+ */
+GFile *
+empathy_ft_handler_get_gfile (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
+
+ priv = GET_PRIV (handler);
+
+ return priv->gfile;
+}
+
+/**
+ * empathy_ft_handler_get_use_hash:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns whether @handler has checksumming enabled. This can depend on
+ * the CM and the remote contact capabilities.
+ *
+ * Return value: %TRUE if the handler has checksumming enabled,
+ * %FALSE otherwise.
+ */
+gboolean
+empathy_ft_handler_get_use_hash (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
+
+ priv = GET_PRIV (handler);
+
+ return priv->use_hash;
+}
+
+/**
+ * empathy_ft_handler_is_incoming:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns whether @handler is incoming or outgoing.
+ *
+ * Return value: %TRUE if the handler is incoming, %FALSE otherwise.
+ */
+gboolean
+empathy_ft_handler_is_incoming (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
+
+ priv = GET_PRIV (handler);
+
+ if (priv->tpfile == NULL)
+ return FALSE;
+
+ return empathy_tp_file_is_incoming (priv->tpfile);
+}
+
+/**
+ * empathy_ft_handler_get_transferred_bytes:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the number of bytes already transferred by the handler.
+ *
+ * Return value: the number of bytes already transferred by the handler.
+ */
+guint64
+empathy_ft_handler_get_transferred_bytes (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
+
+ priv = GET_PRIV (handler);
+
+ return priv->transferred_bytes;
+}
+
+/**
+ * empathy_ft_handler_get_total_bytes:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns the total size of the file being transferred by the handler.
+ *
+ * Return value: a number of bytes indicating the total size of the file being
+ * transferred by the handler.
+ */
+guint64
+empathy_ft_handler_get_total_bytes (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
+
+ priv = GET_PRIV (handler);
+
+ return priv->total_bytes;
+}
+
+/**
+ * empathy_ft_handler_is_completed:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns whether the transfer for @handler has been completed succesfully.
+ *
+ * Return value: %TRUE if the handler has been transferred correctly, %FALSE
+ * otherwise
+ */
+gboolean
+empathy_ft_handler_is_completed (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
+
+ priv = GET_PRIV (handler);
+
+ return priv->is_completed;
+}
+
+/**
+ * empathy_ft_handler_is_cancelled:
+ * @handler: an #EmpathyFTHandler
+ *
+ * Returns whether the transfer for @handler has been cancelled or has stopped
+ * due to an error.
+ *
+ * Return value: %TRUE if the transfer for @handler has been cancelled
+ * or has stopped due to an error, %FALSE otherwise.
+ */
+gboolean
+empathy_ft_handler_is_cancelled (EmpathyFTHandler *handler)
+{
+ EmpathyFTHandlerPriv *priv;
+
+ g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
+
+ priv = GET_PRIV (handler);
+
+ return g_cancellable_is_cancelled (priv->cancellable);
+}