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   gboolean keep_alive;
 301 };
 302
 303 enum {
 304   PROP_0,
 305   PROP_CHANNEL,
 306   PROP_STATE,
 307   PROP_INCOMING,
 308   PROP_FILENAME,
 309   PROP_SIZE,
 310   PROP_CONTENT_TYPE,
 311   PROP_TRANSFERRED_BYTES,
 312   PROP_CONTENT_HASH_TYPE,
 313   PROP_CONTENT_HASH,
 314 };
 315
 316 G_DEFINE_TYPE (EmpathyTpFile, empathy_tp_file, G_TYPE_OBJECT);
 317
 318 static void
 319 empathy_tp_file_init (EmpathyTpFile *tp_file)
 320 {
 321   EmpathyTpFilePriv *priv;
 322
 323   priv = G_TYPE_INSTANCE_GET_PRIVATE ((tp_file),
 324       EMPATHY_TYPE_TP_FILE, EmpathyTpFilePriv);
 325
 326   tp_file->priv = priv;
 327 }
 328
 329 static void
 330 tp_file_check_keep_alive (EmpathyTpFile *tp_file)
 331 {
 332   if (tp_file->priv->keep_alive &&
 333       (tp_file->priv->state == EMP_FILE_TRANSFER_STATE_COMPLETED ||
 334        tp_file->priv->state == EMP_FILE_TRANSFER_STATE_CANCELLED))
 335     {
 336       tp_file->priv->keep_alive = FALSE;
 337       g_object_unref (tp_file);
 338     }
 339 }
 340
 341 static void
 342 tp_file_invalidated_cb (TpProxy       *proxy,
 343                         guint          domain,
 344                         gint           code,
 345                         gchar         *message,
 346                         EmpathyTpFile *tp_file)
 347 {
 348   DEBUG ("Channel invalidated: %s", message);
 349
 350   if (tp_file->priv->state != EMP_FILE_TRANSFER_STATE_COMPLETED &&
 351       tp_file->priv->state != EMP_FILE_TRANSFER_STATE_CANCELLED)
 352     {
 353       /* The channel is not in a finished state, an error occured */
 354       tp_file->priv->state = EMP_FILE_TRANSFER_STATE_CANCELLED;
 355       tp_file->priv->state_change_reason =
 356           EMP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR;
 357       g_object_notify (G_OBJECT (tp_file), "state");
 358     }
 359
 360   tp_file_check_keep_alive (tp_file);
 361 }
 362
 363 static void
 364 tp_file_finalize (GObject *object)
 365 {
 366   EmpathyTpFile *tp_file = EMPATHY_TP_FILE (object);
 367
 368   if (tp_file->priv->channel)
 369     {
 370       DEBUG ("Closing channel..");
 371       g_signal_handlers_disconnect_by_func (tp_file->priv->channel,
 372           tp_file_invalidated_cb, object);
 373       tp_cli_channel_call_close (tp_file->priv->channel, -1, NULL, NULL,
 374           NULL, NULL);
 375       g_object_unref (tp_file->priv->channel);
 376     }
 377
 378   if (tp_file->priv->factory)
 379     {
 380       g_object_unref (tp_file->priv->factory);
 381     }
 382   if (tp_file->priv->mc)
 383     {
 384       g_object_unref (tp_file->priv->mc);
 385     }
 386
 387   g_free (tp_file->priv->filename);
 388   g_free (tp_file->priv->unix_socket_path);
 389   g_free (tp_file->priv->description);
 390   g_free (tp_file->priv->content_hash);
 391   g_free (tp_file->priv->content_type);
 392
 393   if (tp_file->priv->in_stream)
 394     g_object_unref (tp_file->priv->in_stream);
 395
 396   if (tp_file->priv->out_stream)
 397     g_object_unref (tp_file->priv->out_stream);
 398
 399   if (tp_file->priv->contact)
 400     g_object_unref (tp_file->priv->contact);
 401
 402   if (tp_file->priv->cancellable)
 403     g_object_unref (tp_file->priv->cancellable);
 404
 405   G_OBJECT_CLASS (empathy_tp_file_parent_class)->finalize (object);
 406 }
 407
 408 static void
 409 tp_file_start_transfer (EmpathyTpFile *tp_file)
 410 {
 411   gint fd;
 412   size_t path_len;
 413   struct sockaddr_un addr;
 414
 415   fd = socket (PF_UNIX, SOCK_STREAM, 0);
 416   if (fd < 0)
 417     {
 418       DEBUG ("Failed to create socket, closing channel");
 419       empathy_tp_file_cancel (tp_file);
 420       return;
 421     }
 422
 423   memset (&addr, 0, sizeof (addr));
 424   addr.sun_family = AF_UNIX;
 425   path_len = strlen (tp_file->priv->unix_socket_path);
 426   strncpy (addr.sun_path, tp_file->priv->unix_socket_path, path_len);
 427
 428   if (connect (fd, (struct sockaddr*) &addr, sizeof (addr)) < 0)
 429     {
 430       DEBUG ("Failed to connect socket, closing channel");
 431       empathy_tp_file_cancel (tp_file);
 432       close (fd);
 433       return;
 434     }
 435
 436   DEBUG ("Start the transfer");
 437
 438   tp_file->priv->start_time = empathy_time_get_current ();
 439   tp_file->priv->cancellable = g_cancellable_new ();
 440   if (tp_file->priv->incoming)
 441     {
 442       GInputStream *socket_stream;
 443
 444       socket_stream = g_unix_input_stream_new (fd, TRUE);
 445       copy_stream (socket_stream, tp_file->priv->out_stream,
 446           tp_file->priv->cancellable);
 447       g_object_unref (socket_stream);
 448     }
 449   else
 450     {
 451       GOutputStream *socket_stream;
 452
 453       socket_stream = g_unix_output_stream_new (fd, TRUE);
 454       copy_stream (tp_file->priv->in_stream, socket_stream,
 455           tp_file->priv->cancellable);
 456       g_object_unref (socket_stream);
 457     }
 458 }
 459
 460 static void
 461 tp_file_state_changed_cb (TpProxy *proxy,
 462                           guint state,
 463                           guint reason,
 464                           gpointer user_data,
 465                           GObject *weak_object)
 466 {
 467   EmpathyTpFile *tp_file = EMPATHY_TP_FILE (weak_object);
 468
 469   if (state == tp_file->priv->state)
 470     return;
 471
 472   DEBUG ("File transfer state changed:\n"
 473       "\tfilename = %s, old state = %u, state = %u, reason = %u\n"
 474       "\tincoming = %s, in_stream = %s, out_stream = %s",
 475       tp_file->priv->filename, tp_file->priv->state, state, reason,
 476       tp_file->priv->incoming ? "yes" : "no",
 477       tp_file->priv->in_stream ? "present" : "not present",
 478       tp_file->priv->out_stream ? "present" : "not present");
 479
 480   /* If the channel is open AND we have the socket path, we can start the
 481    * transfer. The socket path could be NULL if we are not doing the actual
 482    * data transfer but are just an observer for the channel. */
 483   if (state == EMP_FILE_TRANSFER_STATE_OPEN &&
 484       tp_file->priv->unix_socket_path != NULL)
 485     tp_file_start_transfer (tp_file);
 486
 487   tp_file->priv->state = state;
 488   tp_file->priv->state_change_reason = reason;
 489
 490   g_object_notify (G_OBJECT (tp_file), "state");
 491   tp_file_check_keep_alive (tp_file);
 492 }
 493
 494 static void
 495 tp_file_transferred_bytes_changed_cb (TpProxy *proxy,
 496                                       guint64 count,
 497                                       gpointer user_data,
 498                                       GObject *weak_object)
 499 {
 500   EmpathyTpFile *tp_file = EMPATHY_TP_FILE (weak_object);
 501
 502   if (tp_file->priv->transferred_bytes == count)
 503     return;
 504
 505   tp_file->priv->transferred_bytes = count;
 506   g_object_notify (G_OBJECT (tp_file), "transferred-bytes");
 507 }
 508
 509 static GObject *
 510 tp_file_constructor (GType type,
 511                      guint n_props,
 512                      GObjectConstructParam *props)
 513 {
 514   GObject *file_obj;
 515   EmpathyTpFile *tp_file;
 516   TpHandle handle;
 517   GHashTable *properties;
 518   McAccount *account;
 519   GValue *requested;
 520
 521   file_obj = G_OBJECT_CLASS (empathy_tp_file_parent_class)->constructor (type,
 522       n_props, props);
 523
 524   tp_file = EMPATHY_TP_FILE (file_obj);
 525
 526   tp_file->priv->factory = empathy_contact_factory_new ();
 527   tp_file->priv->mc = empathy_mission_control_new ();
 528
 529   g_signal_connect (tp_file->priv->channel, "invalidated",
 530     G_CALLBACK (tp_file_invalidated_cb), tp_file);
 531
 532   emp_cli_channel_type_file_transfer_connect_to_file_transfer_state_changed (
 533       TP_PROXY (tp_file->priv->channel), tp_file_state_changed_cb, NULL, NULL,
 534       G_OBJECT (tp_file), NULL);
 535
 536   emp_cli_channel_type_file_transfer_connect_to_transferred_bytes_changed (
 537       TP_PROXY (tp_file->priv->channel), tp_file_transferred_bytes_changed_cb,
 538       NULL, NULL, G_OBJECT (tp_file), NULL);
 539
 540   account = empathy_channel_get_account (tp_file->priv->channel);
 541
 542   handle = tp_channel_get_handle (tp_file->priv->channel, NULL);
 543   tp_file->priv->contact = empathy_contact_factory_get_from_handle (
 544       tp_file->priv->factory, account, (guint) handle);
 545
 546   tp_cli_dbus_properties_run_get_all (tp_file->priv->channel,
 547       -1, EMP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, &properties, NULL, NULL);
 548
 549   tp_cli_dbus_properties_run_get (tp_file->priv->channel,
 550       -1, TP_IFACE_CHANNEL, "Requested", &requested, NULL, NULL);
 551
 552   tp_file->priv->size = g_value_get_uint64 (
 553       g_hash_table_lookup (properties, "Size"));
 554
 555   tp_file->priv->state = g_value_get_uint (
 556       g_hash_table_lookup (properties, "State"));
 557
 558   tp_file->priv->state_change_reason =
 559       EMP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE;
 560
 561   tp_file->priv->transferred_bytes = g_value_get_uint64 (
 562       g_hash_table_lookup (properties, "TransferredBytes"));
 563
 564   tp_file->priv->filename = g_value_dup_string (
 565       g_hash_table_lookup (properties, "Filename"));
 566
 567   tp_file->priv->content_hash = g_value_dup_string (
 568       g_hash_table_lookup (properties, "ContentHash"));
 569
 570   tp_file->priv->content_hash_type = g_value_get_uint (
 571       g_hash_table_lookup (properties, "ContentHashType"));
 572
 573   tp_file->priv->content_type = g_value_dup_string (
 574       g_hash_table_lookup (properties, "ContentType"));
 575
 576   tp_file->priv->description = g_value_dup_string (
 577       g_hash_table_lookup (properties, "Description"));
 578
 579   tp_file->priv->incoming = !g_value_get_boolean (requested);
 580
 581   g_hash_table_destroy (properties);
 582   g_object_unref (account);
 583   g_value_unset (requested);
 584
 585   return file_obj;
 586 }
 587
 588 static void
 589 tp_file_get_property (GObject *object,
 590                       guint param_id,
 591                       GValue *value,
 592                       GParamSpec *pspec)
 593 {
 594   EmpathyTpFile *tp_file;
 595
 596   tp_file = EMPATHY_TP_FILE (object);
 597
 598   switch (param_id)
 599     {
 600       case PROP_CHANNEL:
 601         g_value_set_object (value, tp_file->priv->channel);
 602         break;
 603       case PROP_INCOMING:
 604         g_value_set_boolean (value, tp_file->priv->incoming);
 605         break;
 606       case PROP_STATE:
 607         g_value_set_uint (value, tp_file->priv->state);
 608         break;
 609       case PROP_CONTENT_TYPE:
 610         g_value_set_string (value, tp_file->priv->content_type);
 611         break;
 612       case PROP_FILENAME:
 613         g_value_set_string (value, tp_file->priv->filename);
 614         break;
 615       case PROP_SIZE:
 616         g_value_set_uint64 (value, tp_file->priv->size);
 617         break;
 618       case PROP_CONTENT_HASH_TYPE:
 619         g_value_set_uint (value, tp_file->priv->content_hash_type);
 620         break;
 621       case PROP_CONTENT_HASH:
 622         g_value_set_string (value, tp_file->priv->content_hash);
 623         break;
 624       case PROP_TRANSFERRED_BYTES:
 625         g_value_set_uint64 (value, tp_file->priv->transferred_bytes);
 626         break;
 627       default:
 628         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 629         break;
 630     };
 631 }
 632
 633 static void
 634 tp_file_channel_set_dbus_property (gpointer proxy,
 635                                    const gchar *property,
 636                                    const GValue *value)
 637 {
 638         DEBUG ("Setting %s property", property);
 639         tp_cli_dbus_properties_call_set (TP_PROXY (proxy), -1,
 640             EMP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, property, value,
 641             NULL, NULL, NULL, NULL);
 642 }
 643
 644 static void
 645 tp_file_set_property (GObject *object,
 646                       guint param_id,
 647                       const GValue *value,
 648                       GParamSpec *pspec)
 649 {
 650   EmpathyTpFile *tp_file = (EmpathyTpFile *) object;
 651   switch (param_id)
 652     {
 653       case PROP_CHANNEL:
 654         tp_file->priv->channel = g_object_ref (g_value_get_object (value));
 655         break;
 656       case PROP_STATE:
 657         tp_file->priv->state = g_value_get_uint (value);
 658         break;
 659       case PROP_INCOMING:
 660         tp_file->priv->incoming = g_value_get_boolean (value);
 661         break;
 662       case PROP_FILENAME:
 663         g_free (tp_file->priv->filename);
 664         tp_file->priv->filename = g_value_dup_string (value);
 665         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 666             "Filename", value);
 667         break;
 668       case PROP_SIZE:
 669         tp_file->priv->size = g_value_get_uint64 (value);
 670         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 671             "Size", value);
 672         break;
 673       case PROP_CONTENT_TYPE:
 674         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 675             "ContentType", value);
 676         g_free (tp_file->priv->content_type);
 677         tp_file->priv->content_type = g_value_dup_string (value);
 678         break;
 679       case PROP_CONTENT_HASH:
 680         tp_file_channel_set_dbus_property (tp_file->priv->channel,
 681             "ContentHash", value);
 682         g_free (tp_file->priv->content_hash);
 683         tp_file->priv->content_hash = g_value_dup_string (value);
 684         break;
 685       default:
 686         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 687         break;
 688     };
 689 }
 690
 691 static GHashTable *ft_table = NULL;
 692
 693 static void
 694 tp_file_weak_notify_cb (gpointer channel,
 695                         GObject *tp_file)
 696 {
 697   g_hash_table_remove (ft_table, channel);
 698 }
 699
 700 /**
 701  * empathy_tp_file_new:
 702  * @channel: a Telepathy channel
 703  *
 704  * Creates a new #EmpathyTpFile wrapping @channel, or return a new ref to an
 705  * existing #EmpathyTpFile for that channel.
 706  *
 707  * Returns: a new #EmpathyTpFile
 708  */
 709 EmpathyTpFile *
 710 empathy_tp_file_new (TpChannel *channel)
 711 {
 712   EmpathyTpFile *tp_file;
 713
 714   g_return_val_if_fail (TP_IS_CHANNEL (channel), NULL);
 715
 716   if (ft_table != NULL)
 717     {
 718       tp_file = g_hash_table_lookup (ft_table, channel);
 719       if (tp_file != NULL) {
 720         return g_object_ref (tp_file);
 721       }
 722     }
 723   else
 724     ft_table = g_hash_table_new_full (empathy_proxy_hash,
 725       empathy_proxy_equal, (GDestroyNotify) g_object_unref, NULL);
 726
 727   tp_file = g_object_new (EMPATHY_TYPE_TP_FILE,
 728       "channel", channel,
 729       NULL);
 730
 731   g_hash_table_insert (ft_table, g_object_ref (channel), tp_file);
 732   g_object_weak_ref (G_OBJECT (tp_file), tp_file_weak_notify_cb, channel);
 733
 734   return tp_file;
 735 }
 736
 737 /**
 738  * empathy_tp_file_get_channel
 739  * @tp_file: an #EmpathyTpFile
 740  *
 741  * Returns the Telepathy file transfer channel
 742  *
 743  * Returns: the #TpChannel
 744  */
 745 TpChannel *
 746 empathy_tp_file_get_channel (EmpathyTpFile *tp_file)
 747 {
 748   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 749
 750   return tp_file->priv->channel;
 751 }
 752
 753 static void
 754 tp_file_method_cb (TpProxy *proxy,
 755                    const GValue *address,
 756                    const GError *error,
 757                    gpointer user_data,
 758                    GObject *weak_object)
 759 {
 760   EmpathyTpFile *tp_file = (EmpathyTpFile *) weak_object;
 761
 762   if (error)
 763     {
 764       DEBUG ("Error: %s", error->message);
 765       empathy_tp_file_cancel (tp_file);
 766       return;
 767     }
 768
 769   tp_file->priv->unix_socket_path = g_value_dup_string (address);
 770
 771   DEBUG ("Got unix socket path: %s", tp_file->priv->unix_socket_path);
 772 }
 773
 774 /**
 775  * empathy_tp_file_accept:
 776  * @tp_file: an #EmpathyTpFile
 777  * @offset: position where to start the transfer
 778  * @gfile: a #GFile where to write transfered data
 779  * @error: a #GError set if there is an error when opening @gfile
 780  *
 781  * Accepts a file transfer that's in the "local pending" state (i.e.
 782  * EMP_FILE_TRANSFER_STATE_LOCAL_PENDING).
 783  */
 784 void
 785 empathy_tp_file_accept (EmpathyTpFile *tp_file,
 786                         guint64 offset,
 787                         GFile *gfile,
 788                         GError **error)
 789 {
 790   GValue nothing = { 0 };
 791
 792   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 793   g_return_if_fail (G_IS_FILE (gfile));
 794
 795   tp_file->priv->out_stream = G_OUTPUT_STREAM (g_file_replace (gfile, NULL,
 796         FALSE, 0, NULL, error));
 797   if (error && *error)
 798     return;
 799
 800   tp_file->priv->filename = g_file_get_basename (gfile);
 801   g_object_notify (G_OBJECT (tp_file), "filename");
 802
 803   DEBUG ("Accepting file: filename=%s", tp_file->priv->filename);
 804
 805   g_value_init (&nothing, G_TYPE_STRING);
 806   g_value_set_static_string (&nothing, "");
 807
 808   emp_cli_channel_type_file_transfer_call_accept_file (TP_PROXY (
 809       tp_file->priv->channel),
 810       -1, TP_SOCKET_ADDRESS_TYPE_UNIX, TP_SOCKET_ACCESS_CONTROL_LOCALHOST,
 811       &nothing, offset, tp_file_method_cb, NULL, NULL, G_OBJECT (tp_file));
 812 }
 813
 814 /**
 815  * empathy_tp_file_offer:
 816  * @tp_file: an #EmpathyTpFile
 817  * @gfile: a #GFile where to read the data to transfer
 818  * @error: a #GError set if there is an error when opening @gfile
 819  *
 820  * Offers a file transfer that's in the "not offered" state (i.e.
 821  * EMP_FILE_TRANSFER_STATE_NOT_OFFERED).
 822  */
 823 void
 824 empathy_tp_file_offer (EmpathyTpFile *tp_file, GFile *gfile, GError **error)
 825 {
 826   GValue nothing = { 0 };
 827
 828   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 829
 830   tp_file->priv->in_stream = G_INPUT_STREAM (g_file_read (gfile, NULL, error));
 831   if (error && *error)
 832         return;
 833
 834   g_value_init (&nothing, G_TYPE_STRING);
 835   g_value_set_static_string (&nothing, "");
 836
 837   emp_cli_channel_type_file_transfer_call_provide_file (
 838       TP_PROXY (tp_file->priv->channel), -1,
 839       TP_SOCKET_ADDRESS_TYPE_UNIX, TP_SOCKET_ACCESS_CONTROL_LOCALHOST,
 840       &nothing, tp_file_method_cb, NULL, NULL, G_OBJECT (tp_file));
 841 }
 842
 843 /**
 844  * empathy_tp_file_keep_alive:
 845  * @tp_file: an #EmpathyTpFile
 846  *
 847  * Keep @tp_file alive until the file transfer is COMPLETED or CANCELLED, by
 848  * adding a temporary reference.
 849  */
 850 void
 851 empathy_tp_file_keep_alive (EmpathyTpFile *tp_file)
 852 {
 853   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 854
 855   if (tp_file->priv->keep_alive)
 856     return;
 857
 858   tp_file->priv->keep_alive = TRUE;
 859   if (tp_file->priv->state != EMP_FILE_TRANSFER_STATE_COMPLETED &&
 860       tp_file->priv->state != EMP_FILE_TRANSFER_STATE_CANCELLED)
 861     g_object_ref (tp_file);
 862 }
 863
 864 EmpathyContact *
 865 empathy_tp_file_get_contact (EmpathyTpFile *tp_file)
 866 {
 867   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 868   return tp_file->priv->contact;
 869 }
 870
 871 const gchar *
 872 empathy_tp_file_get_filename (EmpathyTpFile *tp_file)
 873 {
 874   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), NULL);
 875   return tp_file->priv->filename;
 876 }
 877
 878 gboolean
 879 empathy_tp_file_is_incoming (EmpathyTpFile *tp_file)
 880 {
 881   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), FALSE);
 882   return tp_file->priv->incoming;
 883 }
 884
 885 EmpFileTransferState
 886 empathy_tp_file_get_state (EmpathyTpFile *tp_file,
 887                            EmpFileTransferStateChangeReason *reason)
 888 {
 889   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file),
 890       EMP_FILE_TRANSFER_STATE_NONE);
 891
 892   if (reason != NULL)
 893     *reason = tp_file->priv->state_change_reason;
 894
 895   return tp_file->priv->state;
 896 }
 897
 898 guint64
 899 empathy_tp_file_get_size (EmpathyTpFile *tp_file)
 900 {
 901   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file),
 902       EMPATHY_TP_FILE_UNKNOWN_SIZE);
 903   return tp_file->priv->size;
 904 }
 905
 906 guint64
 907 empathy_tp_file_get_transferred_bytes (EmpathyTpFile *tp_file)
 908 {
 909   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), 0);
 910   return tp_file->priv->transferred_bytes;
 911 }
 912
 913 gint
 914 empathy_tp_file_get_remaining_time (EmpathyTpFile *tp_file)
 915 {
 916   time_t curr_time, elapsed_time;
 917   gdouble time_per_byte;
 918   gdouble remaining_time;
 919
 920   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), -1);
 921
 922   if (tp_file->priv->size == EMPATHY_TP_FILE_UNKNOWN_SIZE)
 923     return -1;
 924
 925   if (tp_file->priv->transferred_bytes == tp_file->priv->size)
 926     return 0;
 927
 928   curr_time = empathy_time_get_current ();
 929   elapsed_time = curr_time - tp_file->priv->start_time;
 930   time_per_byte = (gdouble) elapsed_time /
 931       (gdouble) tp_file->priv->transferred_bytes;
 932   remaining_time = time_per_byte * (tp_file->priv->size -
 933       tp_file->priv->transferred_bytes);
 934
 935   return (gint) remaining_time;
 936 }
 937
 938 void
 939 empathy_tp_file_cancel (EmpathyTpFile *tp_file)
 940 {
 941   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 942
 943   tp_cli_channel_call_close (tp_file->priv->channel, -1, NULL, NULL, NULL, NULL);
 944
 945   if (tp_file->priv->cancellable != NULL)
 946     g_cancellable_cancel (tp_file->priv->cancellable);
 947 }
 948
 949 static void
 950 empathy_tp_file_class_init (EmpathyTpFileClass *klass)
 951 {
 952   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 953
 954   object_class->finalize = tp_file_finalize;
 955   object_class->constructor = tp_file_constructor;
 956   object_class->get_property = tp_file_get_property;
 957   object_class->set_property = tp_file_set_property;
 958
 959   /* Construct-only properties */
 960   g_object_class_install_property (object_class,
 961       PROP_CHANNEL,
 962       g_param_spec_object ("channel",
 963           "telepathy channel",
 964           "The file transfer channel",
 965           TP_TYPE_CHANNEL,
 966           G_PARAM_READWRITE |
 967           G_PARAM_CONSTRUCT_ONLY));
 968
 969   g_object_class_install_property (object_class,
 970       PROP_STATE,
 971       g_param_spec_uint ("state",
 972           "state of the transfer",
 973           "The file transfer state",
 974           0,
 975           G_MAXUINT,
 976           G_MAXUINT,
 977           G_PARAM_READWRITE |
 978           G_PARAM_CONSTRUCT));
 979
 980   g_object_class_install_property (object_class,
 981       PROP_INCOMING,
 982       g_param_spec_boolean ("incoming",
 983           "incoming",
 984           "Whether the transfer is incoming",
 985           FALSE,
 986           G_PARAM_READWRITE |
 987           G_PARAM_CONSTRUCT));
 988
 989   g_object_class_install_property (object_class,
 990       PROP_FILENAME,
 991       g_param_spec_string ("filename",
 992           "name of the transfer",
 993           "The file transfer filename",
 994           "",
 995           G_PARAM_READWRITE));
 996
 997   g_object_class_install_property (object_class,
 998       PROP_SIZE,
 999       g_param_spec_uint64 ("size",
1000           "size of the file",
1001           "The file transfer size",
1002           0,
1003           G_MAXUINT64,
1004           G_MAXUINT64,
1005           G_PARAM_READWRITE));
1006
1007   g_object_class_install_property (object_class,
1008       PROP_CONTENT_TYPE,
1009       g_param_spec_string ("content-type",
1010           "file transfer content-type",
1011           "The file transfer content-type",
1012           "",
1013           G_PARAM_READWRITE));
1014
1015   g_object_class_install_property (object_class,
1016       PROP_CONTENT_HASH_TYPE,
1017       g_param_spec_uint ("content-hash-type",
1018           "file transfer hash type",
1019           "The type of the file transfer hash",
1020           0,
1021           G_MAXUINT,
1022           0,
1023           G_PARAM_READWRITE));
1024
1025   g_object_class_install_property (object_class,
1026       PROP_CONTENT_HASH,
1027       g_param_spec_string ("content-hash",
1028           "file transfer hash",
1029           "The hash of the transfer's contents",
1030           "",
1031           G_PARAM_READWRITE));
1032
1033   g_object_class_install_property (object_class,
1034       PROP_TRANSFERRED_BYTES,
1035       g_param_spec_uint64 ("transferred-bytes",
1036           "bytes transferred",
1037           "The number of bytes transferred",
1038           0,
1039           G_MAXUINT64,
1040           0,
1041           G_PARAM_READWRITE));
1042
1043   g_type_class_add_private (object_class, sizeof (EmpathyTpFilePriv));
1044 }
1045