libempathy/empathy-tp-file.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * Copyright (C) 2007-2008 Collabora Ltd.
   4  * Copyright (C) 2007 Marco Barisione <marco@barisione.org>
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19  *
  20  * Authors: Marco Barisione <marco@barisione.org>
  21  *          Jonny Lamb <jonny.lamb@collabora.co.uk>
  22  */
  23
  24 #include <config.h>
  25
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <sys/types.h>
  29 #include <sys/socket.h>
  30 #include <sys/un.h>
  31
  32 #include <glib/gi18n.h>
  33
  34 #include <gio/gio.h>
  35 #include <gio/gunixinputstream.h>
  36 #include <gio/gunixoutputstream.h>
  37
  38 #include <telepathy-glib/proxy-subclass.h>
  39
  40 #include "empathy-tp-file.h"
  41 #include "empathy-contact-factory.h"
  42 #include "empathy-marshal.h"
  43 #include "empathy-time.h"
  44 #include "empathy-utils.h"
  45
  46 #define DEBUG_FLAG EMPATHY_DEBUG_FT
  47 #include "empathy-debug.h"
  48
  49 /**
  50  * SECTION:empathy-tp-file
  51  * @short_description: File channel
  52  * @see_also: #EmpathyTpFile, #EmpathyContact, empathy_dispatcher_send_file()
  53  * @include: libempthy/empathy-tp-file.h
  54  *
  55  * The #EmpathyTpFile object represents a Telepathy file channel.
  56  */
  57
  58 /**
  59  * EMPATHY_TP_FILE_UNKNOWN_SIZE:
  60  *
  61  * Value used for the "size" or "estimated-size" properties when the size of
  62  * the transferred file is unknown.
  63  */
  64
  65 /* Functions to copy the content of a GInputStream to a GOutputStream */
  66
  67 #define N_BUFFERS 2
  68 #define BUFFER_SIZE 4096
  69
  70 typedef struct {
  71   GInputStream *in;
  72   GOutputStream *out;
  73   GCancellable  *cancellable;
  74   char *buff[N_BUFFERS]; /* the temporary buffers */
  75   gsize count[N_BUFFERS]; /* how many bytes are used in the buffers */
  76   gboolean is_full[N_BUFFERS]; /* whether the buffers contain data */
  77   gint curr_read; /* index of the buffer used for reading */
  78   gint curr_write; /* index of the buffer used for writing */
  79   gboolean is_reading; /* we are reading */
  80   gboolean is_writing; /* we are writing */
  81   guint n_closed; /* number of streams that have been closed */
  82   gint ref_count;
  83 } CopyData;
  84
  85 static void schedule_next (CopyData *copy);
  86
  87 static void
  88 copy_data_unref (CopyData *copy)
  89 {
  90   if (--copy->ref_count == 0)
  91     {
  92       gint i;
  93
  94       /* Free the data only if both the input and output streams have
  95        * been closed. */
  96       copy->n_closed++;
  97       if (copy->n_closed < 2)
  98         return;
  99
 100       if (copy->in != NULL)
 101         g_object_unref (copy->in);
 102
 103       if (copy->out != NULL)
 104         g_object_unref (copy->out);
 105
 106       for (i = 0; i < N_BUFFERS; i++)
 107         g_free (copy->buff[i]);
 108
 109       g_object_unref (copy->cancellable);
 110       g_free (copy);
 111     }
 112 }
 113
 114 static void
 115 io_error (CopyData *copy,
 116           GError *error)
 117 {
 118   g_cancellable_cancel (copy->cancellable);
 119
 120   if (error == NULL)
 121     g_warning ("I/O error");
 122   else if (error->domain == G_IO_ERROR && error->code == G_IO_ERROR_CANCELLED)
 123     ; /* Ignore cancellations */
 124   else
 125     g_warning ("I/O error: %d: %s\n", error->code, error->message);
 126
 127   if (copy->in != NULL)
 128     g_input_stream_close (copy->in, NULL, NULL);
 129
 130   if (copy->out != NULL)
 131     g_output_stream_close (copy->out, NULL, NULL);
 132
 133   copy_data_unref (copy);
 134 }
 135
 136 static void
 137 close_done (GObject *source_object,
 138             GAsyncResult *res,
 139             gpointer user_data)
 140 {
 141   CopyData *copy = user_data;
 142
 143   g_object_unref (source_object);
 144   copy_data_unref (copy);
 145 }
 146
 147 static void
 148 write_done_cb (GObject *source_object,
 149                GAsyncResult *res,
 150                gpointer user_data)
 151 {
 152   CopyData *copy = user_data;
 153   gssize count_write;
 154   GError *error = NULL;
 155
 156   count_write = g_output_stream_write_finish (copy->out, res, &error);
 157
 158   if (count_write <= 0)
 159     {
 160       io_error (copy, error);
 161       g_error_free (error);
 162       return;
 163     }
 164
 165   copy->is_full[copy->curr_write] = FALSE;
 166   copy->curr_write = (copy->curr_write + 1) % N_BUFFERS;
 167   copy->is_writing = FALSE;
 168
 169   schedule_next (copy);
 170 }
 171
 172 static void
 173 read_done_cb (GObject *source_object,
 174               GAsyncResult *res,
 175               gpointer user_data)
 176 {
 177   CopyData *copy = user_data;
 178   gssize count_read;
 179   GError *error = NULL;
 180
 181   count_read = g_input_stream_read_finish (copy->in, res, &error);
 182
 183   if (count_read == 0)
 184     {
 185       g_input_stream_close_async (copy->in, 0, copy->cancellable,
 186           close_done, copy);
 187       copy->in = NULL;
 188     }
 189   else if (count_read < 0)
 190     {
 191       io_error (copy, error);
 192       g_error_free (error);
 193       return;
 194     }
 195
 196   copy->count[copy->curr_read] = count_read;
 197   copy->is_full[copy->curr_read] = TRUE;
 198   copy->curr_read = (copy->curr_read + 1) % N_BUFFERS;
 199   copy->is_reading = FALSE;
 200
 201   schedule_next (copy);
 202 }
 203
 204 static void
 205 schedule_next (CopyData *copy)
 206 {
 207   if (copy->in != NULL &&
 208       !copy->is_reading &&
 209       !copy->is_full[copy->curr_read])
 210     {
 211       /* We are not reading and the current buffer is empty, so
 212        * start an async read. */
 213       copy->is_reading = TRUE;
 214       g_input_stream_read_async (copy->in,
 215           copy->buff[copy->curr_read],
 216           BUFFER_SIZE, 0, copy->cancellable,
 217           read_done_cb, copy);
 218     }
 219
 220   if (!copy->is_writing &&
 221       copy->is_full[copy->curr_write])
 222     {
 223       if (copy->count[copy->curr_write] == 0)
 224         {
 225           /* The last read on the buffer read 0 bytes, this
 226            * means that we got an EOF, so we can close
 227            * the output channel. */
 228           g_output_stream_close_async (copy->out, 0,
 229               copy->cancellable,
 230               close_done, copy);
 231       copy->out = NULL;
 232         }
 233       else
 234         {
 235           /* We are not writing and the current buffer contains
 236            * data, so start an async write. */
 237           copy->is_writing = TRUE;
 238           g_output_stream_write_async (copy->out,
 239               copy->buff[copy->curr_write],
 240               copy->count[copy->curr_write],
 241               0, copy->cancellable,
 242               write_done_cb, copy);
 243         }
 244     }
 245 }
 246
 247 static void
 248 copy_stream (GInputStream *in,
 249              GOutputStream *out,
 250              GCancellable *cancellable)
 251 {
 252   CopyData *copy;
 253   gint i;
 254
 255   g_return_if_fail (in != NULL);
 256   g_return_if_fail (out != NULL);
 257
 258   copy = g_new0 (CopyData, 1);
 259   copy->in = g_object_ref (in);
 260   copy->out = g_object_ref (out);
 261   copy->ref_count = 1;
 262
 263   if (cancellable != NULL)
 264     copy->cancellable = g_object_ref (cancellable);
 265   else
 266     copy->cancellable = g_cancellable_new ();
 267
 268   for (i = 0; i < N_BUFFERS; i++)
 269     copy->buff[i] = g_malloc (BUFFER_SIZE);
 270
 271   schedule_next (copy);
 272 }
 273
 274 /* EmpathyTpFile object */
 275
 276 struct _EmpathyTpFilePriv {
 277   EmpathyContactFactory *factory;
 278   MissionControl *mc;
 279   TpChannel *channel;
 280
 281   EmpathyContact *contact;
 282   GInputStream *in_stream;
 283   GOutputStream *out_stream;
 284
 285   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer D-Bus properties */
 286   EmpFileTransferState state;
 287   gchar *content_type;
 288   gchar *filename;
 289   guint64 size;
 290   EmpFileHashType content_hash_type;
 291   gchar *content_hash;
 292   gchar *description;
 293   guint64 transferred_bytes;
 294
 295   gboolean incoming;
 296   EmpFileTransferStateChangeReason state_change_reason;
 297   time_t start_time;
 298   gchar *unix_socket_path;
 299   GCancellable *cancellable;
 300 };
 301
 302 enum {
 303   PROP_0,
 304   PROP_CHANNEL,
 305   PROP_STATE,
 306   PROP_INCOMING,
 307   PROP_FILENAME,
 308   PROP_SIZE,
 309   PROP_CONTENT_TYPE,
 310   PROP_TRANSFERRED_BYTES,
 311   PROP_CONTENT_HASH_TYPE,
 312   PROP_CONTENT_HASH,
 313 };
 314
 315 G_DEFINE_TYPE (EmpathyTpFile, empathy_tp_file, G_TYPE_OBJECT);
 316
 317 static void
 318 empathy_tp_file_init (EmpathyTpFile *tp_file)
 319 {
 320   EmpathyTpFilePriv *priv;
 321
 322   priv = G_TYPE_INSTANCE_GET_PRIVATE ((tp_file),
 323       EMPATHY_TYPE_TP_FILE, EmpathyTpFilePriv);
 324
 325   tp_file->priv = priv;
 326 }
 327
 328 static void
 329 tp_file_invalidated_cb (TpProxy       *proxy,
 330                         guint          domain,
 331                         gint           code,
 332                         gchar         *message,
 333                         EmpathyTpFile *tp_file)
 334 {
 335   DEBUG ("Channel invalidated: %s", message);
 336
 337   if (tp_file->priv->state != EMP_FILE_TRANSFER_STATE_COMPLETED &&
 338       tp_file->priv->state != EMP_FILE_TRANSFER_STATE_CANCELLED)
 339     {
 340       /* The channel is not in a finished state, an error occured */
 341       tp_file->priv->state = EMP_FILE_TRANSFER_STATE_CANCELLED;
 342       tp_file->priv->state_change_reason =
 343           EMP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR;
 344       g_object_notify (G_OBJECT (tp_file), "state");
 345     }
 346 }
 347
 348 static void
 349 tp_file_finalize (GObject *object)
 350 {
 351   EmpathyTpFile *tp_file;
 352
 353   tp_file = EMPATHY_TP_FILE (object);
 354
 355   if (tp_file->priv->channel)
 356     {
 357       DEBUG ("Closing channel..");
 358       g_signal_handlers_disconnect_by_func (tp_file->priv->channel,
 359           tp_file_invalidated_cb, object);
 360       tp_cli_channel_call_close (tp_file->priv->channel, -1, NULL, NULL,
 361           NULL, NULL);
 362       g_object_unref (tp_file->priv->channel);
 363     }
 364
 365   if (tp_file->priv->factory)
 366     {
 367       g_object_unref (tp_file->priv->factory);
 368     }
 369   if (tp_file->priv->mc)
 370     {
 371       g_object_unref (tp_file->priv->mc);
 372     }
 373
 374   g_free (tp_file->priv->filename);
 375   g_free (tp_file->priv->unix_socket_path);
 376   g_free (tp_file->priv->description);
 377   g_free (tp_file->priv->content_hash);
 378   g_free (tp_file->priv->content_type);
 379
 380   if (tp_file->priv->in_stream)
 381     g_object_unref (tp_file->priv->in_stream);
 382
 383   if (tp_file->priv->out_stream)
 384     g_object_unref (tp_file->priv->out_stream);
 385
 386   if (tp_file->priv->contact)
 387     g_object_unref (tp_file->priv->contact);
 388
 389   if (tp_file->priv->cancellable)
 390     g_object_unref (tp_file->priv->cancellable);
 391
 392   G_OBJECT_CLASS (empathy_tp_file_parent_class)->finalize (object);
 393 }
 394
 395 static void
 396 tp_file_start_transfer (EmpathyTpFile *tp_file)
 397 {
 398   gint fd;
 399   size_t path_len;
 400   struct sockaddr_un addr;
 401
 402   fd = socket (PF_UNIX, SOCK_STREAM, 0);
 403   if (fd < 0)
 404     {
 405       DEBUG ("Failed to create socket, closing channel");
 406       empathy_tp_file_cancel (tp_file);
 407       return;
 408     }
 409
 410   memset (&addr, 0, sizeof (addr));
 411   addr.sun_family = AF_UNIX;
 412   path_len = strlen (tp_file->priv->unix_socket_path);
 413   strncpy (addr.sun_path, tp_file->priv->unix_socket_path, path_len);
 414
 415   if (connect (fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
 416     {
 417       DEBUG ("Failed to connect socket, closing channel");
 418       empathy_tp_file_cancel (tp_file);
 419       close (fd);
 420       return;
 421     }
 422
 423   DEBUG ("Start the transfer");
 424
 425   tp_file->priv->start_time = empathy_time_get_current ();
 426   tp_file->priv->cancellable = g_cancellable_new ();
 427   if (tp_file->priv->incoming)
 428     {
 429       GOutputStream *socket_stream;
 430
 431       socket_stream = g_unix_output_stream_new (fd, TRUE);
 432       copy_stream (tp_file->priv->in_stream, socket_stream,
 433           tp_file->priv->cancellable);
 434       g_object_unref (socket_stream);
 435     }
 436   else
 437     {
 438       GInputStream *socket_stream;
 439
 440       socket_stream = g_unix_input_stream_new (fd, TRUE);
 441       copy_stream (socket_stream, tp_file->priv->out_stream,
 442           tp_file->priv->cancellable);
 443       g_object_unref (socket_stream);
 444     }
 445 }
 446
 447 static void
 448 tp_file_state_changed_cb (DBusGProxy *tp_file_iface,
 449                           EmpFileTransferState state,
 450                           EmpFileTransferStateChangeReason reason,
 451                           EmpathyTpFile *tp_file)
 452 {
 453   DEBUG ("File transfer state changed:\n"
 454       "\tfilename = %s, old state = %u, state = %u, reason = %u\n"
 455       "\tincoming = %s, in_stream = %s, out_stream = %s",
 456       tp_file->priv->filename, tp_file->priv->state, state, reason,
 457       tp_file->priv->incoming ? "yes" : "no",
 458       tp_file->priv->in_stream ? "present" : "not present",
 459       tp_file->priv->out_stream ? "present" : "not present");
 460
 461   if (state == EMP_FILE_TRANSFER_STATE_OPEN)
 462     tp_file_start_transfer (tp_file);
 463
 464   tp_file->priv->state = state;
 465   tp_file->priv->state_change_reason = reason;
 466
 467   g_object_notify (G_OBJECT (tp_file), "state");
 468 }
 469
 470 static void
 471 tp_file_transferred_bytes_changed_cb (TpProxy *proxy,
 472                                       guint64 count,
 473                                       EmpathyTpFile *tp_file,
 474                                       GObject *weak_object)
 475 {
 476   if (tp_file->priv->transferred_bytes == count)
 477     return;
 478
 479   tp_file->priv->transferred_bytes = count;
 480
 481   g_object_notify (G_OBJECT (tp_file), "transferred-bytes");
 482 }
 483
 484 static GObject *
 485 tp_file_constructor (GType type,
 486                      guint n_props,
 487                      GObjectConstructParam *props)
 488 {
 489   GObject *file_obj;
 490   EmpathyTpFile *tp_file;
 491   TpHandle handle;
 492   GHashTable *properties;
 493   McAccount *account;
 494   GValue *requested;
 495
 496   file_obj = G_OBJECT_CLASS (empathy_tp_file_parent_class)->constructor (type,
 497       n_props, props);
 498
 499   tp_file = EMPATHY_TP_FILE (file_obj);
 500
 501   tp_file->priv->factory = empathy_contact_factory_new ();
 502   tp_file->priv->mc = empathy_mission_control_new ();
 503
 504   g_signal_connect (tp_file->priv->channel, "invalidated",
 505     G_CALLBACK (tp_file_invalidated_cb), tp_file);
 506
 507   emp_cli_channel_type_file_transfer_connect_to_file_transfer_state_changed (
 508       TP_PROXY (tp_file->priv->channel),
 509       (emp_cli_channel_type_file_transfer_signal_callback_file_transfer_state_changed)
 510           tp_file_state_changed_cb,
 511       tp_file,
 512       NULL, NULL, NULL);
 513
 514   emp_cli_channel_type_file_transfer_connect_to_transferred_bytes_changed (
 515       TP_PROXY (tp_file->priv->channel),
 516       (emp_cli_channel_type_file_transfer_signal_callback_transferred_bytes_changed)
 517           tp_file_transferred_bytes_changed_cb,
 518       tp_file,
 519       NULL, NULL, NULL);
 520
 521   account = empathy_channel_get_account (tp_file->priv->channel);
 522
 523   handle = tp_channel_get_handle (tp_file->priv->channel, NULL);
 524   tp_file->priv->contact = empathy_contact_factory_get_from_handle (
 525       tp_file->priv->factory, account, (guint) handle);
 526
 527   tp_cli_dbus_properties_run_get_all (tp_file->priv->channel,
 528       -1, EMP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, &properties, NULL, NULL);
 529
 530   tp_cli_dbus_properties_run_get (tp_file->priv->channel,
 531       -1, TP_IFACE_CHANNEL, "Requested", &requested, NULL, NULL);
 532
 533   tp_file->priv->size = g_value_get_uint64 (
 534       g_hash_table_lookup (properties, "Size"));
 535
 536   tp_file->priv->state = g_value_get_uint (
 537       g_hash_table_lookup (properties, "State"));
 538
 539   tp_file->priv->state_change_reason =
 540       EMP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE;
 541
 542   tp_file->priv->transferred_bytes = g_value_get_uint64 (
 543       g_hash_table_lookup (properties, "TransferredBytes"));
 544
 545   tp_file->priv->filename = g_value_dup_string (
 546       g_hash_table_lookup (properties, "Filename"));
 547
 548   tp_file->priv->content_hash = g_value_dup_string (
 549       g_hash_table_lookup (properties, "ContentHash"));
 550
 551   tp_file->priv->content_hash_type = g_value_get_uint (
 552       g_hash_table_lookup (properties, "ContentHashType"));
 553
 554   tp_file->priv->content_type = g_value_dup_string (
 555       g_hash_table_lookup (properties, "ContentType"));
 556
 557   tp_file->priv->description = g_value_dup_string (
 558       g_hash_table_lookup (properties, "Description"));
 559
 560   tp_file->priv->incoming = !g_value_get_boolean (requested);
 561
 562   g_hash_table_destroy (properties);
 563   g_object_unref (account);
 564   g_value_unset (requested);
 565
 566   return file_obj;
 567 }
 568
 569 static void
 570 tp_file_get_property (GObject *object,
 571                       guint param_id,
 572                       GValue *value,
 573                       GParamSpec *pspec)
 574 {
 575   EmpathyTpFile *tp_file;
 576
 577   tp_file = EMPATHY_TP_FILE (object);
 578
 579   switch (param_id)
 580     {
 581       case PROP_CHANNEL:
 582         g_value_set_object (value, tp_file->priv->channel);
 583         break;
 584       case PROP_INCOMING:
 585         g_value_set_boolean (value, tp_file->priv->incoming);
 586         break;
 587       case PROP_STATE:
 588         g_value_set_uint (value, tp_file->priv->state);
 589         break;
 590       case PROP_CONTENT_TYPE:
 591         g_value_set_string (value, tp_file->priv->content_type);
 592         break;
 593       case PROP_FILENAME:
 594         g_value_set_string (value, tp_file->priv->filename);
 595         break;
 596       case PROP_SIZE:
 597         g_value_set_uint64 (value, tp_file->priv->size);
 598         break;
 599       case PROP_CONTENT_HASH_TYPE:
 600         g_value_set_uint (value, tp_file->priv->content_hash_type);
 601         break;
 602       case PROP_CONTENT_HASH:
 603         g_value_set_string (value, tp_file->priv->content_hash);
 604         break;
 605       case PROP_TRANSFERRED_BYTES:
 606         g_value_set_uint64 (value, tp_file->priv->transferred_bytes);
 607         break;
 608       default:
 609         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 610         break;
 611     };
 612 }
 613
 614 static void
 615 tp_file_channel_set_dbus_property (gpointer proxy,
 616                                    const gchar *property,
 617                                    const GValue *value)
 618 {
 619         DEBUG ("Setting %s property", property);
 620         tp_cli_dbus_properties_call_set (TP_PROXY (proxy), -1,
 621             EMP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, property, value,
 622             NULL, NULL, NULL, NULL);
 623 }
 624
 625 static void
 626 tp_file_set_property (GObject *object,
 627                       guint param_id,
 628                       const GValue *value,
 629                       GParamSpec *pspec)
 630 {
 631   EmpathyTpFile *tp_file = (EmpathyTpFile *) object;
 632   switch (param_id)
 633     {
 634       case PROP_CHANNEL:
 635         tp_file->priv->channel = g_object_ref (g_value_get_object (value));
 636         break;
 637       case PROP_STATE:
 638         tp_file->priv->state = g_value_get_uint (value);
 639         break;
 640       case PROP_INCOMING:
 641         tp_file->priv->incoming = g_value_get_boolean (value);
 642         break;
 643       case PROP_FILENAME:
 644         g_free (tp_file->priv->filename);
 645         tp_file->priv->filename = g_value_dup_string (value);
 646         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 647             "Filename", value);
 648         break;
 649       case PROP_SIZE:
 650         tp_file->priv->size = g_value_get_uint64 (value);
 651         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 652             "Size", value);
 653         break;
 654       case PROP_CONTENT_TYPE:
 655         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 656             "ContentType", value);
 657         g_free (tp_file->priv->content_type);
 658         tp_file->priv->content_type = g_value_dup_string (value);
 659         break;
 660       case PROP_CONTENT_HASH:
 661         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 662             "ContentHash", value);
 663         g_free (tp_file->priv->content_hash);
 664         tp_file->priv->content_hash = g_value_dup_string (value);
 665         break;
 666       default:
 667         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 668         break;
 669     };
 670 }
 671
 672 /**
 673  * empathy_tp_file_new:
 674  * @channel: a Telepathy channel
 675  *
 676  * Creates a new #EmpathyTpFile wrapping @channel.
 677  *
 678  * Returns: a new #EmpathyTpFile
 679  */
 680 EmpathyTpFile *
 681 empathy_tp_file_new (TpChannel *channel)
 682 {
 683   g_return_val_if_fail (TP_IS_CHANNEL (channel), NULL);
 684
 685   return g_object_new (EMPATHY_TYPE_TP_FILE,
 686       "channel", channel,
 687       NULL);
 688 }
 689
 690 /**
 691  * empathy_tp_file_get_channel
 692  * @tp_file: an #EmpathyTpFile
 693  *
 694  * Returns the Telepathy file transfer channel
 695  *
 696  * Returns: the #TpChannel
 697  */
 698 TpChannel *
 699 empathy_tp_file_get_channel (EmpathyTpFile *tp_file)
 700 {
 701   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 702
 703   return tp_file->priv->channel;
 704 }
 705
 706 static void
 707 tp_file_method_cb (TpProxy *proxy,
 708                    const GValue *address,
 709                    const GError *error,
 710                    gpointer user_data,
 711                    GObject *weak_object)
 712 {
 713   EmpathyTpFile *tp_file = (EmpathyTpFile *) weak_object;
 714
 715   if (error)
 716     {
 717       DEBUG ("Error: %s", error->message);
 718       empathy_tp_file_cancel (tp_file);
 719       return;
 720     }
 721
 722   tp_file->priv->unix_socket_path = g_value_dup_string (address);
 723
 724   DEBUG ("Got unix socket path: %s", tp_file->priv->unix_socket_path);
 725 }
 726
 727
 728 /**
 729  * empathy_tp_file_accept:
 730  * @tp_file: an #EmpathyTpFile
 731  * @offset: position where to start the transfer
 732  * @gfile: a #GFile where to write transfered data
 733  * @error: a #GError set if there is an error when opening @gfile
 734  *
 735  * Accepts a file transfer that's in the "local pending" state (i.e.
 736  * EMP_FILE_TRANSFER_STATE_LOCAL_PENDING).
 737  */
 738 void
 739 empathy_tp_file_accept (EmpathyTpFile *tp_file,
 740                         guint64 offset,
 741                         GFile *gfile,
 742                         GError **error)
 743 {
 744   GValue nothing = { 0 };
 745
 746   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 747   g_return_if_fail (G_IS_FILE (gfile));
 748
 749   tp_file->priv->out_stream = G_OUTPUT_STREAM (g_file_replace (gfile, NULL,
 750         FALSE, 0, NULL, error));
 751   if (error && *error)
 752     return;
 753
 754   tp_file->priv->filename = g_file_get_basename (gfile);
 755   g_object_notify (G_OBJECT (tp_file), "filename");
 756
 757   DEBUG ("Accepting file: filename=%s", tp_file->priv->filename);
 758
 759   g_value_init (&nothing, G_TYPE_STRING);
 760   g_value_set_static_string (&nothing, "");
 761
 762   emp_cli_channel_type_file_transfer_call_accept_file (TP_PROXY (
 763       tp_file->priv->channel),
 764       -1, TP_SOCKET_ADDRESS_TYPE_UNIX, TP_SOCKET_ACCESS_CONTROL_LOCALHOST,
 765       &nothing, offset, tp_file_method_cb, NULL, NULL, G_OBJECT (tp_file));
 766 }
 767
 768 /**
 769  * empathy_tp_file_offer:
 770  * @tp_file: an #EmpathyTpFile
 771  * @gfile: a #GFile where to read the data to transfer
 772  * @error: a #GError set if there is an error when opening @gfile
 773  *
 774  * Offers a file transfer that's in the "not offered" state (i.e.
 775  * EMP_FILE_TRANSFER_STATE_NOT_OFFERED).
 776  */
 777 void
 778 empathy_tp_file_offer (EmpathyTpFile *tp_file, GFile *gfile, GError **error)
 779 {
 780   GValue nothing = { 0 };
 781
 782   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 783
 784   tp_file->priv->in_stream = G_INPUT_STREAM (g_file_read (gfile, NULL, error));
 785   if (error && *error)
 786         return;
 787
 788   g_value_init (&nothing, G_TYPE_STRING);
 789   g_value_set_static_string (&nothing, "");
 790
 791   emp_cli_channel_type_file_transfer_call_provide_file (
 792       TP_PROXY (tp_file->priv->channel), -1,
 793       TP_SOCKET_ADDRESS_TYPE_UNIX, TP_SOCKET_ACCESS_CONTROL_LOCALHOST,
 794       &nothing, tp_file_method_cb, NULL, NULL, G_OBJECT (tp_file));
 795 }
 796
 797 EmpathyContact *
 798 empathy_tp_file_get_contact (EmpathyTpFile *tp_file)
 799 {
 800   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 801   return tp_file->priv->contact;
 802 }
 803
 804 const gchar *
 805 empathy_tp_file_get_filename (EmpathyTpFile *tp_file)
 806 {
 807   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 808   return tp_file->priv->filename;
 809 }
 810
 811 gboolean
 812 empathy_tp_file_is_incoming (EmpathyTpFile *tp_file)
 813 {
 814   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), FALSE);
 815   return tp_file->priv->incoming;
 816 }
 817
 818 EmpFileTransferState
 819 empathy_tp_file_get_state (EmpathyTpFile *tp_file,
 820                            EmpFileTransferStateChangeReason *reason)
 821 {
 822   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file),
 823       EMP_FILE_TRANSFER_STATE_NONE);
 824
 825   if (reason != NULL)
 826     *reason = tp_file->priv->state_change_reason;
 827
 828   return tp_file->priv->state;
 829 }
 830
 831 guint64
 832 empathy_tp_file_get_size (EmpathyTpFile *tp_file)
 833 {
 834   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file),
 835       EMPATHY_TP_FILE_UNKNOWN_SIZE);
 836   return tp_file->priv->size;
 837 }
 838
 839 guint64
 840 empathy_tp_file_get_transferred_bytes (EmpathyTpFile *tp_file)
 841 {
 842   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), 0);
 843   return tp_file->priv->transferred_bytes;
 844 }
 845
 846 gint
 847 empathy_tp_file_get_remaining_time (EmpathyTpFile *tp_file)
 848 {
 849   time_t curr_time, elapsed_time;
 850   gdouble time_per_byte;
 851   gdouble remaining_time;
 852
 853   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), -1);
 854
 855   if (tp_file->priv->size == EMPATHY_TP_FILE_UNKNOWN_SIZE)
 856     return -1;
 857
 858   if (tp_file->priv->transferred_bytes == tp_file->priv->size)
 859     return 0;
 860
 861   curr_time = empathy_time_get_current ();
 862   elapsed_time = curr_time - tp_file->priv->start_time;
 863   time_per_byte = (gdouble) elapsed_time /
 864       (gdouble) tp_file->priv->transferred_bytes;
 865   remaining_time = time_per_byte * (tp_file->priv->size -
 866       tp_file->priv->transferred_bytes);
 867
 868   return (gint) remaining_time;
 869 }
 870
 871 void
 872 empathy_tp_file_cancel (EmpathyTpFile *tp_file)
 873 {
 874   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 875
 876   tp_cli_channel_call_close (tp_file->priv->channel, -1, NULL, NULL, NULL, NULL);
 877
 878   if (tp_file->priv->cancellable != NULL)
 879     g_cancellable_cancel (tp_file->priv->cancellable);
 880 }
 881
 882 static void
 883 empathy_tp_file_class_init (EmpathyTpFileClass *klass)
 884 {
 885   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 886
 887   object_class->finalize = tp_file_finalize;
 888   object_class->constructor = tp_file_constructor;
 889   object_class->get_property = tp_file_get_property;
 890   object_class->set_property = tp_file_set_property;
 891
 892   /* Construct-only properties */
 893   g_object_class_install_property (object_class,
 894       PROP_CHANNEL,
 895       g_param_spec_object ("channel",
 896           "telepathy channel",
 897           "The file transfer channel",
 898           TP_TYPE_CHANNEL,
 899           G_PARAM_READWRITE |
 900           G_PARAM_CONSTRUCT_ONLY));
 901
 902   g_object_class_install_property (object_class,
 903       PROP_STATE,
 904       g_param_spec_uint ("state",
 905           "state of the transfer",
 906           "The file transfer state",
 907           0,
 908           G_MAXUINT,
 909           G_MAXUINT,
 910           G_PARAM_READWRITE |
 911           G_PARAM_CONSTRUCT));
 912
 913   g_object_class_install_property (object_class,
 914       PROP_INCOMING,
 915       g_param_spec_boolean ("incoming",
 916           "incoming",
 917           "Whether the transfer is incoming",
 918           FALSE,
 919           G_PARAM_READWRITE |
 920           G_PARAM_CONSTRUCT));
 921
 922   g_object_class_install_property (object_class,
 923       PROP_FILENAME,
 924       g_param_spec_string ("filename",
 925           "name of the transfer",
 926           "The file transfer filename",
 927           "",
 928           G_PARAM_READWRITE));
 929
 930   g_object_class_install_property (object_class,
 931       PROP_SIZE,
 932       g_param_spec_uint64 ("size",
 933           "size of the file",
 934           "The file transfer size",
 935           0,
 936           G_MAXUINT64,
 937           G_MAXUINT64,
 938           G_PARAM_READWRITE));
 939
 940   g_object_class_install_property (object_class,
 941       PROP_CONTENT_TYPE,
 942       g_param_spec_string ("content-type",
 943           "file transfer content-type",
 944           "The file transfer content-type",
 945           "",
 946           G_PARAM_READWRITE));
 947
 948   g_object_class_install_property (object_class,
 949       PROP_CONTENT_HASH_TYPE,
 950       g_param_spec_uint ("content-hash-type",
 951           "file transfer hash type",
 952           "The type of the file transfer hash",
 953           0,
 954           G_MAXUINT,
 955           0,
 956           G_PARAM_READWRITE));
 957
 958   g_object_class_install_property (object_class,
 959       PROP_CONTENT_HASH,
 960       g_param_spec_string ("content-hash",
 961           "file transfer hash",
 962           "The hash of the transfer's contents",
 963           "",
 964           G_PARAM_READWRITE));
 965
 966   g_object_class_install_property (object_class,
 967       PROP_TRANSFERRED_BYTES,
 968       g_param_spec_uint64 ("transferred-bytes",
 969           "bytes transferred",
 970           "The number of bytes transferred",
 971           0,
 972           G_MAXUINT64,
 973           0,
 974           G_PARAM_READWRITE));
 975
 976   g_type_class_add_private (object_class, sizeof (EmpathyTpFilePriv));
 977 }
 978