libempathy/empathy-tp-file.c

   1 /*
   2  * Copyright (C) 2007-2009 Collabora Ltd.
   3  * Copyright (C) 2007 Marco Barisione <marco@barisione.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18  *
  19  * Authors: Marco Barisione <marco@barisione.org>
  20  *          Jonny Lamb <jonny.lamb@collabora.co.uk>
  21  *          Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
  22  */
  23
  24 #include <config.h>
  25
  26 #include <string.h>
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <arpa/inet.h>
  30 #include <sys/types.h>
  31 #include <sys/socket.h>
  32 #include <sys/un.h>
  33
  34 #include <glib/gi18n-lib.h>
  35
  36 #include <gio/gio.h>
  37 #include <gio/gunixinputstream.h>
  38 #include <gio/gunixoutputstream.h>
  39
  40 #include <telepathy-glib/gtypes.h>
  41 #include <telepathy-glib/proxy-subclass.h>
  42 #include <telepathy-glib/util.h>
  43 #include <telepathy-glib/interfaces.h>
  44
  45 #include "empathy-tp-file.h"
  46 #include "empathy-marshal.h"
  47 #include "empathy-time.h"
  48 #include "empathy-utils.h"
  49
  50 #define DEBUG_FLAG EMPATHY_DEBUG_FT
  51 #include "empathy-debug.h"
  52
  53 /**
  54  * SECTION:empathy-tp-file
  55  * @title: EmpathyTpFile
  56  * @short_description: Object which represents a Telepathy file channel
  57  * @include: libempathy/empathy-tp-file.h
  58  *
  59  * #EmpathyTpFile is an object which represents a Telepathy file channel.
  60  * Usually, clients do not need to deal with #EmpathyTpFile objects directly,
  61  * and are supposed to use #EmpathyFTHandler and #EmpathyFTFactory for
  62  * transferring files using libempathy.
  63  */
  64
  65 /* EmpathyTpFile object */
  66
  67 typedef struct {
  68   TpChannel *channel;
  69   gboolean ready;
  70
  71   GInputStream *in_stream;
  72   GOutputStream *out_stream;
  73
  74   /* org.freedesktop.Telepathy.Channel.Type.FileTransfer D-Bus properties */
  75   TpFileTransferState state;
  76   TpFileTransferStateChangeReason state_change_reason;
  77   TpSocketAddressType socket_address_type;
  78   TpSocketAccessControl socket_access_control;
  79
  80   /* transfer properties */
  81   gboolean incoming;
  82   time_t start_time;
  83   GArray *socket_address;
  84   guint port;
  85   guint64 offset;
  86
  87   /* GCancellable we're passed when offering/accepting the transfer */
  88   GCancellable *cancellable;
  89
  90   /* callbacks for the operation */
  91   EmpathyTpFileProgressCallback progress_callback;
  92   gpointer progress_user_data;
  93   EmpathyTpFileOperationCallback op_callback;
  94   gpointer op_user_data;
  95
  96   gboolean is_closed;
  97
  98   gboolean dispose_run;
  99 } EmpathyTpFilePriv;
 100
 101 enum {
 102   PROP_0,
 103   PROP_CHANNEL,
 104   PROP_INCOMING
 105 };
 106
 107 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyTpFile)
 108
 109 G_DEFINE_TYPE (EmpathyTpFile, empathy_tp_file, G_TYPE_OBJECT);
 110
 111 /* private functions */
 112
 113 static void
 114 tp_file_get_state_cb (TpProxy *proxy,
 115     const GValue *value,
 116     const GError *error,
 117     gpointer user_data,
 118     GObject *weak_object)
 119 {
 120   EmpathyTpFilePriv *priv = GET_PRIV (weak_object);
 121
 122   if (error != NULL)
 123     {
 124       /* set a default value for the state */
 125       priv->state = TP_FILE_TRANSFER_STATE_NONE;
 126       return;
 127     }
 128
 129   priv->state = g_value_get_uint (value);
 130 }
 131
 132 static void
 133 tp_file_get_available_socket_types_cb (TpProxy *proxy,
 134     const GValue *value,
 135     const GError *error,
 136     gpointer user_data,
 137     GObject *weak_object)
 138 {
 139   EmpathyTpFilePriv *priv = GET_PRIV (weak_object);
 140   GHashTable *socket_types;
 141   GArray *access_controls;
 142
 143   if (error != NULL ||
 144       !G_VALUE_HOLDS (value, TP_HASH_TYPE_SUPPORTED_SOCKET_MAP))
 145     {
 146       /* set a default value */
 147       priv->socket_address_type = TP_SOCKET_ADDRESS_TYPE_UNIX;
 148       priv->socket_access_control = TP_SOCKET_ACCESS_CONTROL_LOCALHOST;
 149       goto out;
 150     }
 151
 152   socket_types = g_value_get_boxed (value);
 153
 154   /* here UNIX is preferred to IPV4 */
 155   if ((access_controls = g_hash_table_lookup (socket_types,
 156       GUINT_TO_POINTER (TP_SOCKET_ADDRESS_TYPE_UNIX))) != NULL)
 157     {
 158       priv->socket_address_type = TP_SOCKET_ADDRESS_TYPE_UNIX;
 159       priv->socket_access_control = TP_SOCKET_ACCESS_CONTROL_LOCALHOST;
 160       goto out;
 161     }
 162
 163   if ((access_controls = g_hash_table_lookup (socket_types,
 164       GUINT_TO_POINTER (TP_SOCKET_ADDRESS_TYPE_IPV4))) != NULL)
 165     {
 166       priv->socket_address_type = TP_SOCKET_ADDRESS_TYPE_IPV4;
 167
 168       /* TODO: we should prefer PORT over LOCALHOST when the CM will
 169        * support it.
 170        */
 171
 172       priv->socket_access_control = TP_SOCKET_ACCESS_CONTROL_LOCALHOST;
 173     }
 174
 175 out:
 176   DEBUG ("Socket address type: %u, access control %u",
 177       priv->socket_address_type, priv->socket_access_control);
 178 }
 179
 180 static void
 181 tp_file_invalidated_cb (TpProxy       *proxy,
 182     guint          domain,
 183     gint           code,
 184     gchar         *message,
 185     EmpathyTpFile *tp_file)
 186 {
 187   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 188
 189   DEBUG ("Channel invalidated: %s", message);
 190
 191   if (priv->state != TP_FILE_TRANSFER_STATE_COMPLETED &&
 192       priv->state != TP_FILE_TRANSFER_STATE_CANCELLED)
 193     {
 194       /* The channel is not in a finished state, an error occured */
 195       priv->state = TP_FILE_TRANSFER_STATE_CANCELLED;
 196       priv->state_change_reason =
 197           TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR;
 198     }
 199 }
 200
 201 static void
 202 ft_operation_close_clean (EmpathyTpFile *tp_file)
 203 {
 204   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 205
 206   if (priv->is_closed)
 207     return;
 208
 209   DEBUG ("FT operation close clean");
 210
 211   priv->is_closed = TRUE;
 212
 213   if (priv->op_callback != NULL)
 214     priv->op_callback (tp_file, NULL, priv->op_user_data);
 215 }
 216
 217 static void
 218 ft_operation_close_with_error (EmpathyTpFile *tp_file,
 219     GError *error)
 220 {
 221   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 222
 223   if (priv->is_closed)
 224     return;
 225
 226   DEBUG ("FT operation close with error %s", error->message);
 227
 228   priv->is_closed = TRUE;
 229
 230   /* close the channel if it's not cancelled already */
 231   if (priv->state != TP_FILE_TRANSFER_STATE_CANCELLED)
 232     empathy_tp_file_cancel (tp_file);
 233
 234   if (priv->op_callback != NULL)
 235     priv->op_callback (tp_file, error, priv->op_user_data);
 236 }
 237
 238 static void
 239 splice_stream_ready_cb (GObject *source,
 240     GAsyncResult *res,
 241     gpointer user_data)
 242 {
 243   EmpathyTpFile *tp_file;
 244   GError *error = NULL;
 245
 246   tp_file = user_data;
 247
 248   g_output_stream_splice_finish (G_OUTPUT_STREAM (source), res, &error);
 249
 250   DEBUG ("Splice stream ready cb, error %p", error);
 251
 252   if (error != NULL)
 253     {
 254       ft_operation_close_with_error (tp_file, error);
 255       g_clear_error (&error);
 256       return;
 257     }
 258 }
 259
 260 static void
 261 tp_file_start_transfer (EmpathyTpFile *tp_file)
 262 {
 263   gint fd, domain, res = 0;
 264   GError *error = NULL;
 265   struct sockaddr *my_addr = NULL;
 266   size_t my_size = 0;
 267   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 268
 269   if (priv->socket_address_type == TP_SOCKET_ADDRESS_TYPE_UNIX)
 270     {
 271       domain = AF_UNIX;
 272     }
 273   else if (priv->socket_address_type == TP_SOCKET_ADDRESS_TYPE_IPV4)
 274     {
 275       domain = AF_INET;
 276     }
 277   else
 278     {
 279       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 280           EMPATHY_FT_ERROR_NOT_SUPPORTED, _("Socket type not supported"));
 281
 282       DEBUG ("Socket not supported, closing channel");
 283
 284       ft_operation_close_with_error (tp_file, error);
 285       g_clear_error (&error);
 286
 287       return;
 288     }
 289
 290   fd = socket (domain, SOCK_STREAM, 0);
 291
 292   if (fd < 0)
 293     {
 294       int code = errno;
 295
 296       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 297           EMPATHY_FT_ERROR_SOCKET, g_strerror (code));
 298
 299       DEBUG ("Failed to create socket, closing channel");
 300
 301       ft_operation_close_with_error (tp_file, error);
 302       g_clear_error (&error);
 303
 304       return;
 305     }
 306
 307   if (priv->socket_address_type == TP_SOCKET_ADDRESS_TYPE_UNIX)
 308     {
 309       struct sockaddr_un addr;
 310
 311       memset (&addr, 0, sizeof (addr));
 312       addr.sun_family = domain;
 313       strncpy (addr.sun_path, priv->socket_address->data,
 314           priv->socket_address->len);
 315
 316       my_addr = (struct sockaddr *) &addr;
 317       my_size = sizeof (addr);
 318     }
 319   else if (priv->socket_address_type == TP_SOCKET_ADDRESS_TYPE_IPV4)
 320     {
 321       struct sockaddr_in addr;
 322
 323       memset (&addr, 0, sizeof (addr));
 324       addr.sin_family = domain;
 325       inet_pton (AF_INET, priv->socket_address->data, &addr.sin_addr);
 326       addr.sin_port = htons (priv->port);
 327
 328       my_addr = (struct sockaddr *) &addr;
 329       my_size = sizeof (addr);
 330     }
 331
 332   res = connect (fd, my_addr, my_size);
 333
 334   if (res < 0)
 335     {
 336       int code = errno;
 337
 338       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 339           EMPATHY_FT_ERROR_SOCKET, g_strerror (code));
 340
 341       DEBUG ("Failed to connect socket, closing channel");
 342
 343       ft_operation_close_with_error (tp_file, error);
 344       close (fd);
 345       g_clear_error (&error);
 346
 347       return;
 348     }
 349
 350   DEBUG ("Start the transfer");
 351
 352   priv->start_time = empathy_time_get_current ();
 353
 354   /* notify we're starting a transfer */
 355   if (priv->progress_callback != NULL)
 356     priv->progress_callback (tp_file, 0, priv->progress_user_data);
 357
 358   if (priv->incoming)
 359     {
 360       GInputStream *socket_stream;
 361
 362       socket_stream = g_unix_input_stream_new (fd, TRUE);
 363
 364       g_output_stream_splice_async (priv->out_stream, socket_stream,
 365           G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE |
 366           G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
 367           G_PRIORITY_DEFAULT, priv->cancellable,
 368           splice_stream_ready_cb, tp_file);
 369
 370       g_object_unref (socket_stream);
 371     }
 372   else
 373     {
 374       GOutputStream *socket_stream;
 375
 376       socket_stream = g_unix_output_stream_new (fd, TRUE);
 377
 378       g_output_stream_splice_async (socket_stream, priv->in_stream,
 379           G_OUTPUT_STREAM_SPLICE_CLOSE_SOURCE |
 380           G_OUTPUT_STREAM_SPLICE_CLOSE_TARGET,
 381           G_PRIORITY_DEFAULT, priv->cancellable,
 382           splice_stream_ready_cb, tp_file);
 383
 384       g_object_unref (socket_stream);
 385     }
 386 }
 387
 388 static GError *
 389 error_from_state_change_reason (TpFileTransferStateChangeReason reason)
 390 {
 391   const char *string;
 392   GError *retval = NULL;
 393
 394   string = NULL;
 395
 396   switch (reason)
 397     {
 398       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE:
 399         string = _("No reason was specified");
 400         break;
 401       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REQUESTED:
 402         string = _("The change in state was requested");
 403         break;
 404       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_STOPPED:
 405         string = _("You canceled the file transfer");
 406         break;
 407       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_STOPPED:
 408         string = _("The other participant canceled the file transfer");
 409         break;
 410       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR:
 411         string = _("Error while trying to transfer the file");
 412         break;
 413       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_ERROR:
 414         string = _("The other participant is unable to transfer the file");
 415         break;
 416       default:
 417         string = _("Unknown reason");
 418         break;
 419     }
 420
 421   retval = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 422       EMPATHY_FT_ERROR_TP_ERROR, string);
 423
 424   return retval;
 425 }
 426
 427 static void
 428 tp_file_state_changed_cb (TpChannel *proxy,
 429     guint state,
 430     guint reason,
 431     gpointer user_data,
 432     GObject *weak_object)
 433 {
 434   EmpathyTpFilePriv *priv = GET_PRIV (weak_object);
 435   GError *error = NULL;
 436
 437   if (state == priv->state)
 438     return;
 439
 440   DEBUG ("File transfer state changed:\n"
 441       "old state = %u, state = %u, reason = %u\n"
 442       "\tincoming = %s, in_stream = %s, out_stream = %s",
 443       priv->state, state, reason,
 444       priv->incoming ? "yes" : "no",
 445       priv->in_stream ? "present" : "not present",
 446       priv->out_stream ? "present" : "not present");
 447
 448   priv->state = state;
 449   priv->state_change_reason = reason;
 450
 451   /* If the channel is open AND we have the socket path, we can start the
 452    * transfer. The socket path could be NULL if we are not doing the actual
 453    * data transfer but are just an observer for the channel.
 454    */
 455   if (state == TP_FILE_TRANSFER_STATE_OPEN &&
 456       priv->socket_address != NULL)
 457     tp_file_start_transfer (EMPATHY_TP_FILE (weak_object));
 458
 459   if (state == TP_FILE_TRANSFER_STATE_COMPLETED)
 460     ft_operation_close_clean (EMPATHY_TP_FILE (weak_object));
 461
 462   if (state == TP_FILE_TRANSFER_STATE_CANCELLED)
 463     {
 464       error = error_from_state_change_reason (priv->state_change_reason);
 465       ft_operation_close_with_error (EMPATHY_TP_FILE (weak_object), error);
 466       g_clear_error (&error);
 467     }
 468 }
 469
 470 static void
 471 tp_file_transferred_bytes_changed_cb (TpChannel *proxy,
 472     guint64 count,
 473     gpointer user_data,
 474     GObject *weak_object)
 475 {
 476   EmpathyTpFilePriv *priv = GET_PRIV (weak_object);
 477
 478   /* don't notify for 0 bytes count */
 479   if (count == 0)
 480     return;
 481
 482   /* notify clients */
 483   if (priv->progress_callback != NULL)
 484     priv->progress_callback (EMPATHY_TP_FILE (weak_object),
 485         count, priv->progress_user_data);
 486 }
 487
 488 static void
 489 ft_operation_provide_or_accept_file_cb (TpChannel *proxy,
 490     const GValue *address,
 491     const GError *error,
 492     gpointer user_data,
 493     GObject *weak_object)
 494 {
 495   EmpathyTpFile *tp_file = EMPATHY_TP_FILE (weak_object);
 496   GError *myerr = NULL;
 497   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 498
 499   g_cancellable_set_error_if_cancelled (priv->cancellable, &myerr);
 500
 501   if (error != NULL)
 502     {
 503       if (myerr != NULL)
 504         {
 505           /* if we were both cancelled and failed when calling the method,
 506           * report the method error.
 507           */
 508           g_clear_error (&myerr);
 509         }
 510
 511       myerr = g_error_copy (error);
 512     }
 513
 514   if (myerr != NULL)
 515     {
 516       DEBUG ("Error: %s", myerr->message);
 517       ft_operation_close_with_error (tp_file, myerr);
 518       g_clear_error (&myerr);
 519       return;
 520     }
 521
 522   if (G_VALUE_TYPE (address) == DBUS_TYPE_G_UCHAR_ARRAY)
 523     {
 524       priv->socket_address = g_value_dup_boxed (address);
 525     }
 526   else if (G_VALUE_TYPE (address) == G_TYPE_STRING)
 527     {
 528       /* Old bugged version of telepathy-salut used to store the address
 529        * as a 's' instead of an 'ay' */
 530       const gchar *path;
 531
 532       path = g_value_get_string (address);
 533       priv->socket_address = g_array_sized_new (TRUE, FALSE, sizeof (gchar),
 534           strlen (path));
 535       g_array_insert_vals (priv->socket_address, 0, path, strlen (path));
 536     }
 537   else if (G_VALUE_TYPE (address) == TP_STRUCT_TYPE_SOCKET_ADDRESS_IPV4)
 538     {
 539       GValueArray *val_array;
 540       GValue *v;
 541       const char *addr;
 542
 543       val_array = g_value_get_boxed (address);
 544
 545       /* IPV4 address */
 546       v = g_value_array_get_nth (val_array, 0);
 547       addr = g_value_get_string (v);
 548       priv->socket_address = g_array_sized_new (TRUE, FALSE, sizeof (gchar),
 549           strlen (addr));
 550       g_array_insert_vals (priv->socket_address, 0, addr, strlen (addr));
 551
 552       /* port number */
 553       v = g_value_array_get_nth (val_array, 1);
 554       priv->port = g_value_get_uint (v);
 555     }
 556
 557   DEBUG ("Got socket address: %s, port (not zero if IPV4): %d",
 558       priv->socket_address->data, priv->port);
 559
 560   /* if the channel is already open, start the transfer now, otherwise,
 561    * wait for the state change signal.
 562    */
 563   if (priv->state == TP_FILE_TRANSFER_STATE_OPEN)
 564     tp_file_start_transfer (tp_file);
 565 }
 566
 567 static void
 568 initialize_empty_ac_variant (TpSocketAccessControl ac,
 569     GValue *val)
 570 {
 571   /* TODO: we will add more types here once we support PORT access control. */
 572   if (ac == TP_SOCKET_ACCESS_CONTROL_LOCALHOST)
 573     {
 574       g_value_init (val, G_TYPE_STRING);
 575       g_value_set_static_string (val, "");
 576     }
 577 }
 578
 579 static void
 580 file_read_async_cb (GObject *source,
 581     GAsyncResult *res,
 582     gpointer user_data)
 583 {
 584   GValue nothing = { 0 };
 585   EmpathyTpFile *tp_file = user_data;
 586   EmpathyTpFilePriv *priv;
 587   GFileInputStream *in_stream;
 588   GError *error = NULL;
 589
 590   priv = GET_PRIV (tp_file);
 591
 592   in_stream = g_file_read_finish (G_FILE (source), res, &error);
 593
 594   if (error != NULL)
 595     {
 596       ft_operation_close_with_error (tp_file, error);
 597       g_clear_error (&error);
 598       return;
 599     }
 600
 601   priv->in_stream = G_INPUT_STREAM (in_stream);
 602
 603   /* we don't impose specific interface/port requirements even
 604    * if we're not using UNIX sockets.
 605    */
 606   initialize_empty_ac_variant (priv->socket_access_control, &nothing);
 607
 608   tp_cli_channel_type_file_transfer_call_provide_file (
 609       priv->channel, -1,
 610       priv->socket_address_type, priv->socket_access_control,
 611       &nothing, ft_operation_provide_or_accept_file_cb,
 612       NULL, NULL, G_OBJECT (tp_file));
 613 }
 614
 615 static void
 616 file_replace_async_cb (GObject *source,
 617     GAsyncResult *res,
 618     gpointer user_data)
 619 {
 620   GValue nothing = { 0 };
 621   EmpathyTpFile *tp_file = user_data;
 622   EmpathyTpFilePriv *priv;
 623   GError *error = NULL;
 624   GFileOutputStream *out_stream;
 625
 626   priv = GET_PRIV (tp_file);
 627
 628   out_stream = g_file_replace_finish (G_FILE (source), res, &error);
 629
 630   if (error != NULL)
 631     {
 632       ft_operation_close_with_error (tp_file, error);
 633       g_clear_error (&error);
 634
 635       return;
 636     }
 637
 638   priv->out_stream = G_OUTPUT_STREAM (out_stream);
 639
 640   /* we don't impose specific interface/port requirements even
 641    * if we're not using UNIX sockets.
 642    */
 643   initialize_empty_ac_variant (priv->socket_access_control, &nothing);
 644
 645   tp_cli_channel_type_file_transfer_call_accept_file (priv->channel,
 646       -1, priv->socket_address_type, priv->socket_access_control,
 647       &nothing, priv->offset,
 648       ft_operation_provide_or_accept_file_cb, NULL, NULL, G_OBJECT (tp_file));
 649 }
 650
 651 static void
 652 channel_closed_cb (TpChannel *proxy,
 653     const GError *error,
 654     gpointer user_data,
 655     GObject *weak_object)
 656 {
 657   EmpathyTpFile *tp_file = EMPATHY_TP_FILE (weak_object);
 658   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 659   gboolean cancel = GPOINTER_TO_INT (user_data);
 660
 661   DEBUG ("Channel is closed, should cancel %s", cancel ? "True" : "False");
 662
 663   if (priv->cancellable != NULL &&
 664       !g_cancellable_is_cancelled (priv->cancellable) && cancel)
 665     g_cancellable_cancel (priv->cancellable);
 666 }
 667
 668 static void
 669 close_channel_internal (EmpathyTpFile *tp_file,
 670     gboolean cancel)
 671 {
 672   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 673
 674   DEBUG ("Closing channel, should cancel %s", cancel ?
 675          "True" : "False");
 676
 677   tp_cli_channel_call_close (priv->channel, -1,
 678     channel_closed_cb, GINT_TO_POINTER (cancel), NULL, G_OBJECT (tp_file));
 679 }
 680
 681 /* GObject methods */
 682
 683 static void
 684 empathy_tp_file_init (EmpathyTpFile *tp_file)
 685 {
 686   EmpathyTpFilePriv *priv;
 687
 688   priv = G_TYPE_INSTANCE_GET_PRIVATE ((tp_file),
 689       EMPATHY_TYPE_TP_FILE, EmpathyTpFilePriv);
 690
 691   tp_file->priv = priv;
 692 }
 693
 694 static void
 695 do_dispose (GObject *object)
 696 {
 697   EmpathyTpFilePriv *priv = GET_PRIV (object);
 698
 699   if (priv->dispose_run)
 700     return;
 701
 702   priv->dispose_run = TRUE;
 703
 704   if (priv->channel != NULL)
 705     {
 706       g_signal_handlers_disconnect_by_func (priv->channel,
 707           tp_file_invalidated_cb, object);
 708       g_object_unref (priv->channel);
 709       priv->channel = NULL;
 710     }
 711
 712   if (priv->in_stream != NULL)
 713     g_object_unref (priv->in_stream);
 714
 715   if (priv->out_stream != NULL)
 716     g_object_unref (priv->out_stream);
 717
 718   if (priv->cancellable != NULL)
 719     g_object_unref (priv->cancellable);
 720
 721   G_OBJECT_CLASS (empathy_tp_file_parent_class)->dispose (object);
 722 }
 723
 724 static void
 725 do_finalize (GObject *object)
 726 {
 727   EmpathyTpFilePriv *priv = GET_PRIV (object);
 728
 729   DEBUG ("%p", object);
 730
 731   if (priv->socket_address != NULL)
 732     {
 733       g_array_free (priv->socket_address, TRUE);
 734       priv->socket_address = NULL;
 735     }
 736
 737   G_OBJECT_CLASS (empathy_tp_file_parent_class)->finalize (object);
 738 }
 739
 740 static void
 741 do_get_property (GObject *object,
 742     guint param_id,
 743     GValue *value,
 744     GParamSpec *pspec)
 745 {
 746   EmpathyTpFilePriv *priv = GET_PRIV (object);
 747
 748   switch (param_id)
 749     {
 750       case PROP_CHANNEL:
 751         g_value_set_object (value, priv->channel);
 752         break;
 753       case PROP_INCOMING:
 754         g_value_set_boolean (value, priv->incoming);
 755         break;
 756       default:
 757         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 758         break;
 759     };
 760 }
 761
 762 static void
 763 do_set_property (GObject *object,
 764     guint param_id,
 765     const GValue *value,
 766     GParamSpec *pspec)
 767 {
 768   EmpathyTpFilePriv *priv = GET_PRIV (object);
 769   switch (param_id)
 770     {
 771       case PROP_CHANNEL:
 772         priv->channel = g_object_ref (g_value_get_object (value));
 773         break;
 774       case PROP_INCOMING:
 775         priv->incoming = g_value_get_boolean (value);
 776         break;
 777       default:
 778         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, param_id, pspec);
 779         break;
 780     };
 781 }
 782
 783 static void
 784 do_constructed (GObject *object)
 785 {
 786   EmpathyTpFile *tp_file;
 787   EmpathyTpFilePriv *priv;
 788
 789   tp_file = EMPATHY_TP_FILE (object);
 790   priv = GET_PRIV (tp_file);
 791
 792   g_signal_connect (priv->channel, "invalidated",
 793     G_CALLBACK (tp_file_invalidated_cb), tp_file);
 794
 795   tp_cli_channel_type_file_transfer_connect_to_file_transfer_state_changed (
 796       priv->channel, tp_file_state_changed_cb, NULL, NULL, object, NULL);
 797
 798   tp_cli_channel_type_file_transfer_connect_to_transferred_bytes_changed (
 799       priv->channel, tp_file_transferred_bytes_changed_cb,
 800       NULL, NULL, object, NULL);
 801
 802   tp_cli_dbus_properties_call_get (priv->channel,
 803       -1, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "State", tp_file_get_state_cb,
 804       NULL, NULL, object);
 805
 806   tp_cli_dbus_properties_call_get (priv->channel,
 807       -1, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER, "AvailableSocketTypes",
 808       tp_file_get_available_socket_types_cb, NULL, NULL, object);
 809
 810   priv->state_change_reason =
 811       TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE;
 812 }
 813
 814 static void
 815 empathy_tp_file_class_init (EmpathyTpFileClass *klass)
 816 {
 817   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 818
 819   object_class->finalize = do_finalize;
 820   object_class->dispose = do_dispose;
 821   object_class->constructed = do_constructed;
 822   object_class->get_property = do_get_property;
 823   object_class->set_property = do_set_property;
 824
 825   /* Construct-only properties */
 826
 827   /**
 828    * EmpathyTpFile:channel:
 829    *
 830    * The #TpChannel requested for the file transfer.
 831    */
 832   g_object_class_install_property (object_class,
 833       PROP_CHANNEL,
 834       g_param_spec_object ("channel",
 835           "telepathy channel",
 836           "The file transfer channel",
 837           TP_TYPE_CHANNEL,
 838           G_PARAM_READWRITE |
 839           G_PARAM_CONSTRUCT_ONLY));
 840
 841   /**
 842    * EmpathyTpFile:incoming:
 843    *
 844    * %TRUE if the transfer is incoming, %FALSE if it's outgoing.
 845    */
 846   g_object_class_install_property (object_class,
 847       PROP_INCOMING,
 848       g_param_spec_boolean ("incoming",
 849           "direction of transfer",
 850           "The direction of the file being transferred",
 851           FALSE,
 852           G_PARAM_READWRITE |
 853           G_PARAM_CONSTRUCT_ONLY));
 854
 855   g_type_class_add_private (object_class, sizeof (EmpathyTpFilePriv));
 856 }
 857
 858 /* public methods */
 859
 860 /**
 861  * empathy_tp_file_new:
 862  * @channel: a #TpChannel
 863  * @incoming: whether the file transfer is incoming or not
 864  *
 865  * Creates a new #EmpathyTpFile wrapping @channel, with the direction
 866  * specified by @incoming. The returned #EmpathyTpFile should be unrefed
 867  * with g_object_unref() when finished with.
 868  *
 869  * Return value: a new #EmpathyTpFile
 870  */
 871 EmpathyTpFile *
 872 empathy_tp_file_new (TpChannel *channel,
 873     gboolean incoming)
 874 {
 875   EmpathyTpFile *tp_file;
 876
 877   g_return_val_if_fail (TP_IS_CHANNEL (channel), NULL);
 878
 879   tp_file = g_object_new (EMPATHY_TYPE_TP_FILE,
 880       "channel", channel, "incoming", incoming,
 881       NULL);
 882
 883   return tp_file;
 884 }
 885
 886 /**
 887  * empathy_tp_file_accept:
 888  * @tp_file: an incoming #EmpathyTpFile
 889  * @offset: the offset of @gfile where we should start writing
 890  * @gfile: the destination #GFile for the transfer
 891  * @cancellable: a #GCancellable
 892  * @progress_callback: function to callback with progress information
 893  * @progress_user_data: user_data to pass to @progress_callback
 894  * @op_callback: function to callback when the transfer ends
 895  * @op_user_data: user_data to pass to @op_callback
 896  *
 897  * Accepts an incoming file transfer, saving the result into @gfile.
 898  * The callback @op_callback will be called both when the transfer is
 899  * successful and in case of an error. Note that cancelling @cancellable,
 900  * closes the socket of the file operation in progress, but doesn't
 901  * guarantee that the transfer channel will be closed as well. Thus,
 902  * empathy_tp_file_cancel() or empathy_tp_file_close() should be used to
 903  * actually cancel an ongoing #EmpathyTpFile.
 904  */
 905 void
 906 empathy_tp_file_accept (EmpathyTpFile *tp_file,
 907     guint64 offset,
 908     GFile *gfile,
 909     GCancellable *cancellable,
 910     EmpathyTpFileProgressCallback progress_callback,
 911     gpointer progress_user_data,
 912     EmpathyTpFileOperationCallback op_callback,
 913     gpointer op_user_data)
 914 {
 915   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 916
 917   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 918   g_return_if_fail (G_IS_FILE (gfile));
 919   g_return_if_fail (G_IS_CANCELLABLE (cancellable));
 920
 921   priv->cancellable = g_object_ref (cancellable);
 922   priv->progress_callback = progress_callback;
 923   priv->progress_user_data = progress_user_data;
 924   priv->op_callback = op_callback;
 925   priv->op_user_data = op_user_data;
 926   priv->offset = offset;
 927
 928   g_file_replace_async (gfile, NULL, FALSE, G_FILE_CREATE_NONE,
 929       G_PRIORITY_DEFAULT, cancellable, file_replace_async_cb, tp_file);
 930 }
 931
 932
 933 /**
 934  * empathy_tp_file_offer:
 935  * @tp_file: an outgoing #EmpathyTpFile
 936  * @gfile: the source #GFile for the transfer
 937  * @cancellable: a #GCancellable
 938  * @progress_callback: function to callback with progress information
 939  * @progress_user_data: user_data to pass to @progress_callback
 940  * @op_callback: function to callback when the transfer ends
 941  * @op_user_data: user_data to pass to @op_callback
 942  *
 943  * Offers an outgoing file transfer, reading data from @gfile.
 944  * The callback @op_callback will be called both when the transfer is
 945  * successful and in case of an error. Note that cancelling @cancellable,
 946  * closes the socket of the file operation in progress, but doesn't
 947  * guarantee that the transfer channel will be closed as well. Thus,
 948  * empathy_tp_file_cancel() or empathy_tp_file_close() should be used to
 949  * actually cancel an ongoing #EmpathyTpFile.
 950  */
 951 void
 952 empathy_tp_file_offer (EmpathyTpFile *tp_file,
 953     GFile *gfile,
 954     GCancellable *cancellable,
 955     EmpathyTpFileProgressCallback progress_callback,
 956     gpointer progress_user_data,
 957     EmpathyTpFileOperationCallback op_callback,
 958     gpointer op_user_data)
 959 {
 960   EmpathyTpFilePriv *priv = GET_PRIV (tp_file);
 961
 962   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
 963   g_return_if_fail (G_IS_FILE (gfile));
 964   g_return_if_fail (G_IS_CANCELLABLE (cancellable));
 965
 966   priv->cancellable = g_object_ref (cancellable);
 967   priv->progress_callback = progress_callback;
 968   priv->progress_user_data = progress_user_data;
 969   priv->op_callback = op_callback;
 970   priv->op_user_data = op_user_data;
 971
 972   g_file_read_async (gfile, G_PRIORITY_DEFAULT, cancellable,
 973       file_read_async_cb, tp_file);
 974 }
 975
 976 /**
 977  * empathy_tp_file_is_incoming:
 978  * @tp_file: an #EmpathyTpFile
 979  *
 980  * Returns whether @tp_file is incoming.
 981  *
 982  * Return value: %TRUE if the @tp_file is incoming, otherwise %FALSE
 983  */
 984 gboolean
 985 empathy_tp_file_is_incoming (EmpathyTpFile *tp_file)
 986 {
 987   EmpathyTpFilePriv *priv;
 988
 989   g_return_val_if_fail (EMPATHY_IS_TP_FILE (tp_file), FALSE);
 990
 991   priv = GET_PRIV (tp_file);
 992
 993   return priv->incoming;
 994 }
 995
 996 /**
 997  * empathy_tp_file_cancel:
 998  * @tp_file: an #EmpathyTpFile
 999  *
1000  * Cancels an ongoing #EmpathyTpFile, first closing the channel and then
1001  * cancelling any I/O operation and closing the socket.
1002  */
1003 void
1004 empathy_tp_file_cancel (EmpathyTpFile *tp_file)
1005 {
1006   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
1007
1008   close_channel_internal (tp_file, TRUE);
1009 }
1010
1011 /**
1012  * empathy_tp_file_close:
1013  * @tp_file: an #EmpathyTpFile
1014  *
1015  * Closes the channel for an ongoing #EmpathyTpFile. It's safe to call this
1016  * method after the transfer has ended.
1017  */
1018 void
1019 empathy_tp_file_close (EmpathyTpFile *tp_file)
1020 {
1021   g_return_if_fail (EMPATHY_IS_TP_FILE (tp_file));
1022
1023   close_channel_internal (tp_file, FALSE);
1024 }