tubes/source/file-transfer-helper.c

   1 /*
   2  * empathy-ft-handler.c - Source for EmpathyFTHandler
   3  * Copyright © 2009, 2012 Collabora Ltd.
   4  * Copyright © 2009 Frédéric Péters
   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  * Author: Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
  21  */
  22
  23 /* empathy-ft-handler.c */
  24
  25 #include <glib.h>
  26 #include <glib/gi18n.h>
  27 #include <telepathy-glib/account-channel-request.h>
  28 #include <telepathy-glib/util.h>
  29 #include <telepathy-glib/dbus.h>
  30 #include <telepathy-glib/interfaces.h>
  31
  32 #include <tubes/file-transfer-helper.h>
  33
  34 #define DEBUG(...)
  35
  36 /**
  37  * SECTION:empathy-ft-handler
  38  * @title: EmpathyFTHandler
  39  * @short_description: an object representing a File Transfer
  40  * @include: libempathy/empathy-ft-handler
  41  *
  42  * #EmpathyFTHandler is the object which represents a File Transfer with all
  43  * its properties.
  44  * The creation of an #EmpathyFTHandler is done with
  45  * empathy_ft_handler_new_outgoing() or empathy_ft_handler_new_incoming(),
  46  * even though clients should not need to call them directly, as
  47  * #EmpathyFTFactory does it for them. Remember that for the file transfer
  48  * to work with an incoming handler,
  49  * empathy_ft_handler_incoming_set_destination() should be called after
  50  * empathy_ft_handler_new_incoming(). #EmpathyFTFactory does this
  51  * automatically.
  52  * It's important to note that, as the creation of the handlers is async, once
  53  * an handler is created, it already has all the interesting properties set,
  54  * like filename, total bytes, content type and so on, making it useful
  55  * to be displayed in an UI.
  56  * The transfer API works like a state machine; it has three signals,
  57  * ::transfer-started, ::transfer-progress, ::transfer-done, which will be
  58  * emitted in the relevant phases.
  59  * In addition, if the handler is created with checksumming enabled,
  60  * other three signals (::hashing-started, ::hashing-progress, ::hashing-done)
  61  * will be emitted before or after the transfer, depending on the direction
  62  * (respectively outgoing and incoming) of the handler.
  63  * At any time between the call to empathy_ft_handler_start_transfer() and
  64  * the last signal, a ::transfer-error can be emitted, indicating that an
  65  * error has happened in the operation. The message of the error is localized
  66  * to use in an UI.
  67  */
  68
  69 G_DEFINE_TYPE (EmpathyFTHandler, empathy_ft_handler, G_TYPE_OBJECT)
  70
  71 #define BUFFER_SIZE 4096
  72
  73 enum {
  74   PROP_CHANNEL = 1,
  75   PROP_G_FILE,
  76   PROP_ACCOUNT,
  77   PROP_CONTACT,
  78   PROP_CONTENT_TYPE,
  79   PROP_DESCRIPTION,
  80   PROP_FILENAME,
  81   PROP_MODIFICATION_TIME,
  82   PROP_TOTAL_BYTES,
  83   PROP_TRANSFERRED_BYTES,
  84   PROP_USER_ACTION_TIME
  85 };
  86
  87 enum {
  88   HASHING_STARTED,
  89   HASHING_PROGRESS,
  90   HASHING_DONE,
  91   TRANSFER_STARTED,
  92   TRANSFER_PROGRESS,
  93   TRANSFER_DONE,
  94   TRANSFER_ERROR,
  95   LAST_SIGNAL
  96 };
  97
  98 typedef struct {
  99   GInputStream *stream;
 100   GError *error /* comment to make the style checker happy */;
 101   guchar *buffer;
 102   GChecksum *checksum;
 103   gssize total_read;
 104   guint64 total_bytes;
 105   EmpathyFTHandler *handler;
 106 } HashingData;
 107
 108 typedef struct {
 109   EmpathyFTHandlerReadyCallback callback;
 110   gpointer user_data;
 111   EmpathyFTHandler *handler;
 112 } CallbacksData;
 113
 114 /* private data */
 115 struct _EmpathyFTHandlerPriv {
 116   gboolean dispose_run;
 117
 118   GFile *gfile;
 119   TpFileTransferChannel *channel;
 120   GCancellable *cancellable;
 121   gboolean use_hash;
 122
 123   /* request for the new transfer */
 124   GHashTable *request;
 125
 126   /* transfer properties */
 127   TpAccount *account;
 128   TpContact *contact;
 129   gchar *content_type;
 130   gchar *filename;
 131   gchar *description;
 132   guint64 total_bytes;
 133   guint64 transferred_bytes;
 134   guint64 mtime;
 135   gchar *content_hash;
 136   TpFileHashType content_hash_type;
 137   gchar *service_name;
 138
 139   gint64 user_action_time;
 140
 141   /* time and speed */
 142   gdouble speed;
 143   guint remaining_time;
 144   gint64 last_update_time;
 145
 146   gboolean is_completed;
 147 };
 148
 149 static guint signals[LAST_SIGNAL] = { 0 };
 150
 151 static gboolean do_hash_job_incoming (GIOSchedulerJob *job,
 152     GCancellable *cancellable, gpointer user_data);
 153
 154 /* GObject implementations */
 155 static void
 156 do_get_property (GObject *object,
 157     guint property_id,
 158     GValue *value,
 159     GParamSpec *pspec)
 160 {
 161   EmpathyFTHandler *self = EMPATHY_FT_HANDLER (object);
 162   EmpathyFTHandlerPriv *priv = self->priv;
 163
 164   switch (property_id)
 165     {
 166       case PROP_ACCOUNT:
 167         g_value_set_object (value, priv->account);
 168         break;
 169       case PROP_CONTACT:
 170         g_value_set_object (value, priv->contact);
 171         break;
 172       case PROP_CONTENT_TYPE:
 173         g_value_set_string (value, priv->content_type);
 174         break;
 175       case PROP_DESCRIPTION:
 176         g_value_set_string (value, priv->description);
 177         break;
 178       case PROP_FILENAME:
 179         g_value_set_string (value, priv->filename);
 180         break;
 181       case PROP_MODIFICATION_TIME:
 182         g_value_set_uint64 (value, priv->mtime);
 183         break;
 184       case PROP_TOTAL_BYTES:
 185         g_value_set_uint64 (value, priv->total_bytes);
 186         break;
 187       case PROP_TRANSFERRED_BYTES:
 188         g_value_set_uint64 (value, priv->transferred_bytes);
 189         break;
 190       case PROP_G_FILE:
 191         g_value_set_object (value, priv->gfile);
 192         break;
 193       case PROP_CHANNEL:
 194         g_value_set_object (value, priv->channel);
 195         break;
 196       case PROP_USER_ACTION_TIME:
 197         g_value_set_int64 (value, priv->user_action_time);
 198         break;
 199       default:
 200         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 201     }
 202 }
 203
 204 static void
 205 do_set_property (GObject *object,
 206     guint property_id,
 207     const GValue *value,
 208     GParamSpec *pspec)
 209 {
 210   EmpathyFTHandler *self = EMPATHY_FT_HANDLER (object);
 211   EmpathyFTHandlerPriv *priv = self->priv;
 212
 213   switch (property_id)
 214     {
 215       case PROP_ACCOUNT:
 216         priv->account = g_value_dup_object (value);
 217         break;
 218       case PROP_CONTACT:
 219         priv->contact = g_value_dup_object (value);
 220         break;
 221       case PROP_CONTENT_TYPE:
 222         priv->content_type = g_value_dup_string (value);
 223         break;
 224       case PROP_DESCRIPTION:
 225         priv->description = g_value_dup_string (value);
 226         break;
 227       case PROP_FILENAME:
 228         priv->filename = g_value_dup_string (value);
 229         break;
 230       case PROP_MODIFICATION_TIME:
 231         priv->mtime = g_value_get_uint64 (value);
 232         break;
 233       case PROP_TOTAL_BYTES:
 234         priv->total_bytes = g_value_get_uint64 (value);
 235         break;
 236       case PROP_TRANSFERRED_BYTES:
 237         priv->transferred_bytes = g_value_get_uint64 (value);
 238         break;
 239       case PROP_G_FILE:
 240         priv->gfile = g_value_dup_object (value);
 241         break;
 242       case PROP_CHANNEL:
 243         priv->channel = g_value_dup_object (value);
 244         break;
 245       case PROP_USER_ACTION_TIME:
 246         priv->user_action_time = g_value_get_int64 (value);
 247         break;
 248       default:
 249         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 250     }
 251 }
 252
 253 static void
 254 do_dispose (GObject *object)
 255 {
 256   EmpathyFTHandler *self = EMPATHY_FT_HANDLER (object);
 257   EmpathyFTHandlerPriv *priv = self->priv;
 258
 259   if (priv->dispose_run)
 260     return;
 261
 262   priv->dispose_run = TRUE;
 263
 264   if (priv->account != NULL) {
 265     g_object_unref (priv->account);
 266     priv->account = NULL;
 267   }
 268
 269   if (priv->contact != NULL) {
 270     g_object_unref (priv->contact);
 271     priv->contact = NULL;
 272   }
 273
 274   if (priv->gfile != NULL) {
 275     g_object_unref (priv->gfile);
 276     priv->gfile = NULL;
 277   }
 278
 279   if (priv->channel != NULL) {
 280     tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
 281     g_object_unref (priv->channel);
 282     priv->channel = NULL;
 283   }
 284
 285   if (priv->cancellable != NULL) {
 286     g_object_unref (priv->cancellable);
 287     priv->cancellable = NULL;
 288   }
 289
 290   if (priv->request != NULL)
 291     {
 292       g_hash_table_unref (priv->request);
 293       priv->request = NULL;
 294     }
 295
 296   G_OBJECT_CLASS (empathy_ft_handler_parent_class)->dispose (object);
 297 }
 298
 299 static void
 300 do_finalize (GObject *object)
 301 {
 302   EmpathyFTHandler *self = EMPATHY_FT_HANDLER (object);
 303   EmpathyFTHandlerPriv *priv = self->priv;
 304
 305   DEBUG ("%p", object);
 306
 307   g_free (priv->content_type);
 308   priv->content_type = NULL;
 309
 310   g_free (priv->filename);
 311   priv->filename = NULL;
 312
 313   g_free (priv->description);
 314   priv->description = NULL;
 315
 316   g_free (priv->content_hash);
 317   priv->content_hash = NULL;
 318
 319   g_free (priv->service_name);
 320   priv->service_name = NULL;
 321
 322   G_OBJECT_CLASS (empathy_ft_handler_parent_class)->finalize (object);
 323 }
 324
 325 static void
 326 empathy_ft_handler_class_init (EmpathyFTHandlerClass *klass)
 327 {
 328   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 329   GParamSpec *param_spec;
 330
 331   g_type_class_add_private (klass, sizeof (EmpathyFTHandlerPriv));
 332
 333   object_class->get_property = do_get_property;
 334   object_class->set_property = do_set_property;
 335   object_class->dispose = do_dispose;
 336   object_class->finalize = do_finalize;
 337
 338   /* properties */
 339
 340   /**
 341    * EmpathyFTHandler:account:
 342    *
 343    * The local #TpAccount for the file transfer
 344    */
 345   param_spec = g_param_spec_object ("account",
 346     "account", "The remote account",
 347     TP_TYPE_ACCOUNT,
 348     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 349   g_object_class_install_property (object_class, PROP_ACCOUNT, param_spec);
 350
 351   /**
 352    * EmpathyFTHandler:contact:
 353    *
 354    * The remote #TpContact for the transfer
 355    */
 356   param_spec = g_param_spec_object ("contact",
 357     "contact", "The remote contact",
 358     TP_TYPE_CONTACT,
 359     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 360   g_object_class_install_property (object_class, PROP_CONTACT, param_spec);
 361
 362   /**
 363    * EmpathyFTHandler:content-type:
 364    *
 365    * The content type of the file being transferred
 366    */
 367   param_spec = g_param_spec_string ("content-type",
 368     "content-type", "The content type of the file", NULL,
 369     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 370   g_object_class_install_property (object_class,
 371       PROP_CONTENT_TYPE, param_spec);
 372
 373   /**
 374    * EmpathyFTHandler:description:
 375    *
 376    * The description of the file being transferred
 377    */
 378   param_spec = g_param_spec_string ("description",
 379     "description", "The description of the file", NULL,
 380     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 381   g_object_class_install_property (object_class,
 382       PROP_DESCRIPTION, param_spec);
 383
 384   /**
 385    * EmpathyFTHandler:filename:
 386    *
 387    * The name of the file being transferred
 388    */
 389   param_spec = g_param_spec_string ("filename",
 390     "filename", "The name of the file", NULL,
 391     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 392   g_object_class_install_property (object_class,
 393       PROP_FILENAME, param_spec);
 394
 395   /**
 396    * EmpathyFTHandler:modification-time:
 397    *
 398    * The modification time of the file being transferred
 399    */
 400   param_spec = g_param_spec_uint64 ("modification-time",
 401     "modification-time", "The mtime of the file", 0,
 402     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 403   g_object_class_install_property (object_class,
 404       PROP_MODIFICATION_TIME, param_spec);
 405
 406   /**
 407    * EmpathyFTHandler:total-bytes:
 408    *
 409    * The size (in bytes) of the file being transferred
 410    */
 411   param_spec = g_param_spec_uint64 ("total-bytes",
 412     "total-bytes", "The size of the file", 0,
 413     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 414   g_object_class_install_property (object_class,
 415       PROP_TOTAL_BYTES, param_spec);
 416
 417   /**
 418    * EmpathyFTHandler:transferred-bytes:
 419    *
 420    * The number of the bytes already transferred
 421    */
 422   param_spec = g_param_spec_uint64 ("transferred-bytes",
 423     "transferred-bytes", "The number of bytes already transferred", 0,
 424     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 425   g_object_class_install_property (object_class,
 426       PROP_TRANSFERRED_BYTES, param_spec);
 427
 428   /**
 429    * EmpathyFTHandler:gfile:
 430    *
 431    * The #GFile object where the transfer actually happens
 432    */
 433   param_spec = g_param_spec_object ("gfile",
 434     "gfile", "The GFile we're handling",
 435     G_TYPE_FILE,
 436     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 437   g_object_class_install_property (object_class, PROP_G_FILE, param_spec);
 438
 439   /**
 440    * EmpathyFTHandler:channel:
 441    *
 442    * The underlying #TpFileTransferChannel managing the transfer
 443    */
 444   param_spec = g_param_spec_object ("channel",
 445     "channel", "The file transfer channel",
 446     TP_TYPE_FILE_TRANSFER_CHANNEL,
 447     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 448   g_object_class_install_property (object_class, PROP_CHANNEL, param_spec);
 449
 450   param_spec = g_param_spec_int64 ("user-action-time", "user action time",
 451     "User action time",
 452     0, G_MAXINT64, 0,
 453     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 454   g_object_class_install_property (object_class, PROP_USER_ACTION_TIME,
 455       param_spec);
 456
 457   /* signals */
 458
 459   /**
 460    * EmpathyFTHandler::transfer-started
 461    * @handler: the object which has received the signal
 462    * @channel: the #TpFileTransferChannel for which the transfer has started
 463    *
 464    * This signal is emitted when the actual transfer starts.
 465    */
 466   signals[TRANSFER_STARTED] =
 467     g_signal_new ("transfer-started", G_TYPE_FROM_CLASS (klass),
 468         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 469         g_cclosure_marshal_generic,
 470         G_TYPE_NONE,
 471         1, TP_TYPE_FILE_TRANSFER_CHANNEL);
 472
 473   /**
 474    * EmpathyFTHandler::transfer-done
 475    * @handler: the object which has received the signal
 476    * @channel: the #TpFileTransferChannel for which the transfer has started
 477    *
 478    * This signal will be emitted when the actual transfer is completed
 479    * successfully.
 480    */
 481   signals[TRANSFER_DONE] =
 482     g_signal_new ("transfer-done", G_TYPE_FROM_CLASS (klass),
 483         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 484         g_cclosure_marshal_generic,
 485         G_TYPE_NONE,
 486         1, TP_TYPE_FILE_TRANSFER_CHANNEL);
 487
 488   /**
 489    * EmpathyFTHandler::transfer-error
 490    * @handler: the object which has received the signal
 491    * @error: a #GError
 492    *
 493    * This signal can be emitted anytime between the call to
 494    * empathy_ft_handler_start_transfer() and the last expected signal
 495    * (::transfer-done or ::hashing-done), and it's guaranteed to be the last
 496    * signal coming from the handler, meaning that no other operation will
 497    * take place after this signal.
 498    */
 499   signals[TRANSFER_ERROR] =
 500     g_signal_new ("transfer-error", G_TYPE_FROM_CLASS (klass),
 501         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 502         g_cclosure_marshal_generic,
 503         G_TYPE_NONE,
 504         1, G_TYPE_POINTER);
 505
 506   /**
 507    * EmpathyFTHandler::transfer-progress
 508    * @handler: the object which has received the signal
 509    * @current_bytes: the bytes currently transferred
 510    * @total_bytes: the total bytes of the handler
 511    * @remaining_time: the number of seconds remaining for the transfer
 512    * to be completed
 513    * @speed: the current speed of the transfer (in KB/s)
 514    *
 515    * This signal is emitted to notify clients of the progress of the
 516    * transfer.
 517    */
 518   signals[TRANSFER_PROGRESS] =
 519     g_signal_new ("transfer-progress", G_TYPE_FROM_CLASS (klass),
 520         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 521         g_cclosure_marshal_generic,
 522         G_TYPE_NONE,
 523         4, G_TYPE_UINT64, G_TYPE_UINT64, G_TYPE_UINT, G_TYPE_DOUBLE);
 524
 525   /**
 526    * EmpathyFTHandler::hashing-started
 527    * @handler: the object which has received the signal
 528    *
 529    * This signal is emitted when the hashing operation of the handler
 530    * is started. Note that this might happen or not, depending on the CM
 531    * and remote contact capabilities. Clients should use
 532    * empathy_ft_handler_get_use_hash() before calling
 533    * empathy_ft_handler_start_transfer() to know whether they should connect
 534    * to this signal.
 535    */
 536   signals[HASHING_STARTED] =
 537     g_signal_new ("hashing-started", G_TYPE_FROM_CLASS (klass),
 538         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 539         g_cclosure_marshal_generic,
 540         G_TYPE_NONE, 0);
 541
 542   /**
 543    * EmpathyFTHandler::hashing-progress
 544    * @handler: the object which has received the signal
 545    * @current_bytes: the bytes currently hashed
 546    * @total_bytes: the total bytes of the handler
 547    *
 548    * This signal is emitted to notify clients of the progress of the
 549    * hashing operation.
 550    */
 551   signals[HASHING_PROGRESS] =
 552     g_signal_new ("hashing-progress", G_TYPE_FROM_CLASS (klass),
 553         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 554         g_cclosure_marshal_generic,
 555         G_TYPE_NONE,
 556         2, G_TYPE_UINT64, G_TYPE_UINT64);
 557
 558   /**
 559    * EmpathyFTHandler::hashing-done
 560    * @handler: the object which has received the signal
 561    *
 562    * This signal is emitted when the hashing operation of the handler
 563    * is completed.
 564    */
 565   signals[HASHING_DONE] =
 566     g_signal_new ("hashing-done", G_TYPE_FROM_CLASS (klass),
 567         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 568         g_cclosure_marshal_generic,
 569         G_TYPE_NONE, 0);
 570 }
 571
 572 static void
 573 empathy_ft_handler_init (EmpathyFTHandler *self)
 574 {
 575   EmpathyFTHandlerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 576     EMPATHY_TYPE_FT_HANDLER, EmpathyFTHandlerPriv);
 577
 578   self->priv = priv;
 579   priv->cancellable = g_cancellable_new ();
 580 }
 581
 582 /* private functions */
 583
 584 static void
 585 hash_data_free (HashingData *data)
 586 {
 587   g_free (data->buffer);
 588
 589   if (data->stream != NULL)
 590     g_object_unref (data->stream);
 591
 592   if (data->checksum != NULL)
 593     g_checksum_free (data->checksum);
 594
 595   if (data->error != NULL)
 596     g_error_free (data->error);
 597
 598   if (data->handler != NULL)
 599     g_object_unref (data->handler);
 600
 601   g_slice_free (HashingData, data);
 602 }
 603
 604 static GChecksumType
 605 tp_file_hash_to_g_checksum (TpFileHashType type)
 606 {
 607   GChecksumType retval;
 608
 609   switch (type)
 610     {
 611       case TP_FILE_HASH_TYPE_MD5:
 612         retval = G_CHECKSUM_MD5;
 613         break;
 614       case TP_FILE_HASH_TYPE_SHA1:
 615         retval = G_CHECKSUM_SHA1;
 616         break;
 617       case TP_FILE_HASH_TYPE_SHA256:
 618         retval = G_CHECKSUM_SHA256;
 619         break;
 620       case TP_FILE_HASH_TYPE_NONE:
 621       default:
 622         g_assert_not_reached ();
 623         break;
 624     }
 625
 626   return retval;
 627 }
 628
 629 static void
 630 check_hash_incoming (EmpathyFTHandler *handler)
 631 {
 632   HashingData *hash_data;
 633   EmpathyFTHandlerPriv *priv = handler->priv;
 634
 635   if (!tp_str_empty (priv->content_hash))
 636     {
 637       hash_data = g_slice_new0 (HashingData);
 638       hash_data->total_bytes = priv->total_bytes;
 639       hash_data->handler = g_object_ref (handler);
 640       hash_data->checksum = g_checksum_new
 641         (tp_file_hash_to_g_checksum (priv->content_hash_type));
 642
 643       g_signal_emit (handler, signals[HASHING_STARTED], 0);
 644
 645       #pragma GCC diagnostic push
 646       #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
 647       g_io_scheduler_push_job (do_hash_job_incoming, hash_data, NULL,
 648                                G_PRIORITY_DEFAULT, priv->cancellable);
 649       #pragma GCC diagnostic pop
 650     }
 651 }
 652
 653 static void
 654 emit_error_signal (EmpathyFTHandler *handler,
 655     const GError *error)
 656 {
 657   EmpathyFTHandlerPriv *priv = handler->priv;
 658
 659   DEBUG ("Error in transfer: %s\n", error->message);
 660
 661   if (!g_cancellable_is_cancelled (priv->cancellable))
 662     g_cancellable_cancel (priv->cancellable);
 663
 664   g_signal_emit (handler, signals[TRANSFER_ERROR], 0, error);
 665 }
 666
 667 static gint64
 668 time_get_current (void)
 669 {
 670   GDateTime *now;
 671   gint64 result;
 672
 673   now = g_date_time_new_now_utc ();
 674   result = g_date_time_to_unix (now);
 675   g_date_time_unref (now);
 676
 677   return result;
 678 }
 679
 680 static void
 681 update_remaining_time_and_speed (EmpathyFTHandler *handler,
 682     guint64 transferred_bytes)
 683 {
 684   EmpathyFTHandlerPriv *priv = handler->priv;
 685   gint64 elapsed_time, current_time;
 686   guint64 transferred, last_transferred_bytes;
 687   gdouble speed;
 688   gint remaining_time;
 689
 690   last_transferred_bytes = priv->transferred_bytes;
 691   priv->transferred_bytes = transferred_bytes;
 692
 693   current_time = time_get_current ();
 694   elapsed_time = current_time - priv->last_update_time;
 695
 696   if (elapsed_time >= 1)
 697     {
 698       transferred = transferred_bytes - last_transferred_bytes;
 699       speed = (gdouble) transferred / (gdouble) elapsed_time;
 700       remaining_time = (priv->total_bytes - priv->transferred_bytes) / speed;
 701       priv->speed = speed;
 702       priv->remaining_time = remaining_time;
 703       priv->last_update_time = current_time;
 704     }
 705 }
 706
 707 static void
 708 ft_transfer_transferred_bytes_cb (TpFileTransferChannel *channel,
 709     GParamSpec *pspec,
 710     EmpathyFTHandler *handler)
 711 {
 712   EmpathyFTHandlerPriv *priv = handler->priv;
 713   guint64 bytes;
 714
 715   (void)pspec;      /* suppress unused-parameter warning */
 716
 717   if (empathy_ft_handler_is_cancelled (handler))
 718     return;
 719
 720   bytes = tp_file_transfer_channel_get_transferred_bytes (channel);
 721
 722   if (priv->transferred_bytes == 0)
 723     {
 724       priv->last_update_time = time_get_current ();
 725       g_signal_emit (handler, signals[TRANSFER_STARTED], 0, channel);
 726     }
 727
 728   if (priv->transferred_bytes != bytes)
 729     {
 730       update_remaining_time_and_speed (handler, bytes);
 731
 732       g_signal_emit (handler, signals[TRANSFER_PROGRESS], 0,
 733           bytes, priv->total_bytes, priv->remaining_time,
 734           priv->speed);
 735     }
 736 }
 737
 738 static void
 739 ft_transfer_provide_cb (GObject *source,
 740     GAsyncResult *result,
 741     gpointer user_data)
 742 {
 743   TpFileTransferChannel *channel = TP_FILE_TRANSFER_CHANNEL (source);
 744   EmpathyFTHandler *handler = user_data;
 745   GError *error = NULL;
 746
 747   if (!tp_file_transfer_channel_provide_file_finish (channel, result, &error))
 748     {
 749       emit_error_signal (handler, error);
 750       g_clear_error (&error);
 751     }
 752 }
 753
 754 static void
 755 ft_transfer_accept_cb (GObject *source,
 756     GAsyncResult *result,
 757     gpointer user_data)
 758 {
 759   TpFileTransferChannel *channel = TP_FILE_TRANSFER_CHANNEL (source);
 760   EmpathyFTHandler *handler = user_data;
 761   GError *error = NULL;
 762
 763   if (!tp_file_transfer_channel_accept_file_finish (channel, result, &error))
 764     {
 765       emit_error_signal (handler, error);
 766       g_clear_error (&error);
 767     }
 768 }
 769
 770 static GError *
 771 error_from_state_change_reason (TpFileTransferStateChangeReason reason)
 772 {
 773   const char *string;
 774   GError *retval = NULL;
 775
 776   string = NULL;
 777
 778   switch (reason)
 779     {
 780       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE:
 781         string = _("No reason was specified");
 782         break;
 783       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REQUESTED:
 784         string = _("The change in state was requested");
 785         break;
 786       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_STOPPED:
 787         string = _("You canceled the file transfer");
 788         break;
 789       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_STOPPED:
 790         string = _("The other participant canceled the file transfer");
 791         break;
 792       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR:
 793         string = _("Error while trying to transfer the file");
 794         break;
 795       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_ERROR:
 796         string = _("The other participant is unable to transfer the file");
 797         break;
 798       default:
 799         string = _("Unknown reason");
 800         break;
 801     }
 802
 803   retval = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 804       EMPATHY_FT_ERROR_TP_ERROR, string);
 805
 806   return retval;
 807 }
 808
 809 static void
 810 ft_transfer_state_cb (TpFileTransferChannel *channel,
 811     GParamSpec *pspec,
 812     EmpathyFTHandler *handler)
 813 {
 814   EmpathyFTHandlerPriv *priv = handler->priv;
 815   TpFileTransferStateChangeReason reason;
 816   TpFileTransferState state = tp_file_transfer_channel_get_state (
 817       channel, &reason);
 818
 819   (void)pspec;      /* suppress unused-parameter warning */
 820
 821   if (state == TP_FILE_TRANSFER_STATE_COMPLETED)
 822     {
 823       priv->is_completed = TRUE;
 824       g_signal_emit (handler, signals[TRANSFER_DONE], 0, channel);
 825
 826       tp_channel_close_async (TP_CHANNEL (channel), NULL, NULL);
 827
 828       if (empathy_ft_handler_is_incoming (handler) && priv->use_hash)
 829         {
 830           check_hash_incoming (handler);
 831         }
 832     }
 833   else if (state == TP_FILE_TRANSFER_STATE_CANCELLED)
 834     {
 835       GError *error = error_from_state_change_reason (reason);
 836       emit_error_signal (handler, error);
 837       g_clear_error (&error);
 838     }
 839 }
 840
 841 static void
 842 ft_handler_create_channel_cb (GObject *source,
 843     GAsyncResult *result,
 844     gpointer user_data)
 845 {
 846   EmpathyFTHandler *handler = user_data;
 847   EmpathyFTHandlerPriv *priv = handler->priv;
 848   GError *error = NULL;
 849   TpChannel *channel;
 850
 851   DEBUG ("Dispatcher create channel CB");
 852
 853   channel = tp_account_channel_request_create_and_handle_channel_finish (
 854         TP_ACCOUNT_CHANNEL_REQUEST (source), result, NULL, &error);
 855
 856   if (channel == NULL)
 857     DEBUG ("Failed to request FT channel: %s", error->message);
 858   else
 859     g_cancellable_set_error_if_cancelled (priv->cancellable, &error);
 860
 861   if (error != NULL)
 862     {
 863       emit_error_signal (handler, error);
 864
 865       g_clear_object (&channel);
 866       g_error_free (error);
 867       return;
 868     }
 869
 870   priv->channel = TP_FILE_TRANSFER_CHANNEL (channel);
 871
 872   tp_g_signal_connect_object (priv->channel, "notify::state",
 873       G_CALLBACK (ft_transfer_state_cb), handler, 0);
 874   tp_g_signal_connect_object (priv->channel, "notify::transferred-bytes",
 875       G_CALLBACK (ft_transfer_transferred_bytes_cb), handler, 0);
 876
 877   tp_file_transfer_channel_provide_file_async (priv->channel, priv->gfile,
 878       ft_transfer_provide_cb, handler);
 879 }
 880
 881 static void
 882 ft_handler_push_to_dispatcher (EmpathyFTHandler *handler)
 883 {
 884   EmpathyFTHandlerPriv *priv = handler->priv;
 885   TpAccountChannelRequest *req;
 886
 887   DEBUG ("Pushing request to the dispatcher");
 888
 889   req = tp_account_channel_request_new (priv->account, priv->request,
 890       priv->user_action_time);
 891
 892   tp_account_channel_request_create_and_handle_channel_async (req, NULL,
 893       ft_handler_create_channel_cb, handler);
 894
 895   g_object_unref (req);
 896 }
 897
 898 static void
 899 ft_handler_populate_outgoing_request (EmpathyFTHandler *handler)
 900 {
 901   guint contact_handle;
 902   EmpathyFTHandlerPriv *priv = handler->priv;
 903   gchar *uri;
 904
 905   contact_handle = tp_contact_get_handle (priv->contact);
 906   uri = g_file_get_uri (priv->gfile);
 907
 908   priv->request = tp_asv_new (
 909       TP_PROP_CHANNEL_CHANNEL_TYPE, G_TYPE_STRING,
 910         TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER,
 911       TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, G_TYPE_UINT,
 912         TP_HANDLE_TYPE_CONTACT,
 913       TP_PROP_CHANNEL_TARGET_HANDLE, G_TYPE_UINT,
 914         contact_handle,
 915       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_TYPE, G_TYPE_STRING,
 916         priv->content_type,
 917       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_FILENAME, G_TYPE_STRING,
 918         priv->filename,
 919       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_SIZE, G_TYPE_UINT64,
 920         priv->total_bytes,
 921       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_DATE, G_TYPE_UINT64,
 922         priv->mtime,
 923       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_URI, G_TYPE_STRING, uri,
 924       NULL);
 925
 926   if (priv->service_name != NULL)
 927     tp_asv_set_string (priv->request, TP_PROP_CHANNEL_INTERFACE_FILE_TRANSFER_METADATA_SERVICE_NAME, priv->service_name);
 928
 929   if (priv->description != NULL)
 930     tp_asv_set_string (priv->request, TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_DESCRIPTION, priv->description);
 931
 932   g_free (uri);
 933 }
 934
 935 static gboolean
 936 hash_job_done (gpointer user_data)
 937 {
 938   HashingData *hash_data = user_data;
 939   EmpathyFTHandler *handler = hash_data->handler;
 940   EmpathyFTHandlerPriv *priv;
 941   GError *error = NULL;
 942
 943   DEBUG ("Closing stream after hashing.");
 944
 945   priv = handler->priv;
 946
 947   if (hash_data->error != NULL)
 948     {
 949       error = hash_data->error;
 950       hash_data->error = NULL;
 951       goto cleanup;
 952     }
 953
 954   DEBUG ("Got file hash %s", g_checksum_get_string (hash_data->checksum));
 955
 956   if (empathy_ft_handler_is_incoming (handler))
 957     {
 958       if (g_strcmp0 (g_checksum_get_string (hash_data->checksum),
 959                      priv->content_hash))
 960         {
 961           DEBUG ("Hash mismatch when checking incoming handler: "
 962                  "received %s, calculated %s", priv->content_hash,
 963                  g_checksum_get_string (hash_data->checksum));
 964
 965           error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 966               EMPATHY_FT_ERROR_HASH_MISMATCH,
 967               _("File transfer completed, but the file was corrupted"));
 968           goto cleanup;
 969         }
 970       else
 971         {
 972           DEBUG ("Hash verification matched, received %s, calculated %s",
 973                  priv->content_hash,
 974                  g_checksum_get_string (hash_data->checksum));
 975         }
 976     }
 977   else
 978     {
 979       /* set the checksum in the request...
 980        * org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentHash
 981        */
 982       tp_asv_set_string (priv->request,
 983           TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH,
 984           g_checksum_get_string (hash_data->checksum));
 985     }
 986
 987 cleanup:
 988
 989   if (error != NULL)
 990     {
 991       emit_error_signal (handler, error);
 992       g_clear_error (&error);
 993     }
 994   else
 995     {
 996       g_signal_emit (handler, signals[HASHING_DONE], 0);
 997
 998       if (!empathy_ft_handler_is_incoming (handler))
 999         /* the request is complete now, push it to the dispatcher */
1000         ft_handler_push_to_dispatcher (handler);
1001     }
1002
1003   hash_data_free (hash_data);
1004
1005   return FALSE;
1006 }
1007
1008 static gboolean
1009 emit_hashing_progress (gpointer user_data)
1010 {
1011   HashingData *hash_data = user_data;
1012
1013   g_signal_emit (hash_data->handler, signals[HASHING_PROGRESS], 0,
1014       (guint64) hash_data->total_read, (guint64) hash_data->total_bytes);
1015
1016   return FALSE;
1017 }
1018
1019 static gboolean
1020 do_hash_job (GIOSchedulerJob *job,
1021     GCancellable *cancellable,
1022     gpointer user_data)
1023 {
1024   HashingData *hash_data = user_data;
1025   gssize bytes_read;
1026   GError *error = NULL;
1027
1028 again:
1029   if (hash_data->buffer == NULL)
1030     hash_data->buffer = g_malloc0 (BUFFER_SIZE);
1031
1032   bytes_read = g_input_stream_read (hash_data->stream, hash_data->buffer,
1033                                     BUFFER_SIZE, cancellable, &error);
1034   if (error != NULL)
1035     goto out;
1036
1037   hash_data->total_read += bytes_read;
1038
1039   /* we now have the chunk */
1040   if (bytes_read > 0)
1041     {
1042       g_checksum_update (hash_data->checksum, hash_data->buffer, bytes_read);
1043       #pragma GCC diagnostic push
1044       #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
1045       g_io_scheduler_job_send_to_mainloop_async (job, emit_hashing_progress,
1046           hash_data, NULL);
1047       #pragma GCC diagnostic pop
1048       g_free (hash_data->buffer);
1049       hash_data->buffer = NULL;
1050
1051       goto again;
1052     }
1053   else
1054   {
1055     g_input_stream_close (hash_data->stream, cancellable, &error);
1056   }
1057
1058 out:
1059   if (error != NULL)
1060     hash_data->error = error;
1061
1062   #pragma GCC diagnostic push
1063   #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
1064   g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
1065       hash_data, NULL);
1066   #pragma GCC diagnostic pop
1067
1068   return FALSE;
1069 }
1070
1071 static gboolean
1072 do_hash_job_incoming (GIOSchedulerJob *job,
1073     GCancellable *cancellable,
1074     gpointer user_data)
1075 {
1076   HashingData *hash_data = user_data;
1077   EmpathyFTHandler *handler = hash_data->handler;
1078   EmpathyFTHandlerPriv *priv = handler->priv;
1079   GError *error = NULL;
1080
1081   DEBUG ("checking integrity for incoming handler");
1082
1083   /* need to get the stream first */
1084   hash_data->stream =
1085     G_INPUT_STREAM (g_file_read (priv->gfile, cancellable, &error));
1086
1087   if (error != NULL)
1088     {
1089       hash_data->error = error;
1090       #pragma GCC diagnostic push
1091       #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
1092       g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
1093           hash_data, NULL);
1094       #pragma GCC diagnostic pop
1095       return FALSE;
1096     }
1097
1098   return do_hash_job (job, cancellable, user_data);
1099 }
1100
1101 static void
1102 ft_handler_read_async_cb (GObject *source,
1103     GAsyncResult *res,
1104     gpointer user_data)
1105 {
1106   GFileInputStream *stream;
1107   GError *error = NULL;
1108   HashingData *hash_data;
1109   EmpathyFTHandler *handler = user_data;
1110   EmpathyFTHandlerPriv *priv = handler->priv;
1111
1112   (void)source;     /* suppress unused-parameter warning */
1113
1114   DEBUG ("GFile read async CB.");
1115
1116   stream = g_file_read_finish (priv->gfile, res, &error);
1117   if (error != NULL)
1118     {
1119       emit_error_signal (handler, error);
1120       g_clear_error (&error);
1121
1122       return;
1123     }
1124
1125   hash_data = g_slice_new0 (HashingData);
1126   hash_data->stream = G_INPUT_STREAM (stream);
1127   hash_data->total_bytes = priv->total_bytes;
1128   hash_data->handler = g_object_ref (handler);
1129   /* FIXME: MD5 is the only ContentHashType supported right now */
1130   hash_data->checksum = g_checksum_new (G_CHECKSUM_MD5);
1131
1132   tp_asv_set_uint32 (priv->request,
1133       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH_TYPE,
1134       TP_FILE_HASH_TYPE_MD5);
1135
1136   g_signal_emit (handler, signals[HASHING_STARTED], 0);
1137
1138   #pragma GCC diagnostic push
1139   #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
1140   g_io_scheduler_push_job (do_hash_job, hash_data, NULL,
1141       G_PRIORITY_DEFAULT, priv->cancellable);
1142   #pragma GCC diagnostic pop
1143 }
1144
1145 static void
1146 callbacks_data_free (gpointer user_data)
1147 {
1148   CallbacksData *data = user_data;
1149
1150   if (data->handler != NULL)
1151     g_object_unref (data->handler);
1152
1153   g_slice_free (CallbacksData, data);
1154 }
1155
1156 static gint
1157 cmp_uint (
1158     gconstpointer a,
1159     gconstpointer b)
1160 {
1161   return *(guint *) a - *(guint *) b;
1162 }
1163
1164 static gboolean
1165 set_content_hash_type_from_classes (EmpathyFTHandler *handler,
1166     GPtrArray *classes)
1167 {
1168   GArray *possible_values;
1169   guint value;
1170   gboolean valid;
1171   EmpathyFTHandlerPriv *priv = handler->priv;
1172   gboolean support_ft = FALSE;
1173   guint i;
1174
1175   possible_values = g_array_new (TRUE, TRUE, sizeof (guint));
1176
1177   for (i = 0; i < classes->len; i++)
1178     {
1179       GHashTable *fixed;
1180       GStrv allowed;
1181       const gchar *chan_type;
1182
1183       tp_value_array_unpack (g_ptr_array_index (classes, i), 2,
1184           &fixed, &allowed);
1185
1186       chan_type = tp_asv_get_string (fixed, TP_PROP_CHANNEL_CHANNEL_TYPE);
1187
1188       if (tp_strdiff (chan_type, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER))
1189         continue;
1190
1191       if (tp_asv_get_uint32 (fixed, TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, NULL) !=
1192           TP_HANDLE_TYPE_CONTACT)
1193         continue;
1194
1195       support_ft = TRUE;
1196
1197       value = tp_asv_get_uint32
1198         (fixed, TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH_TYPE,
1199          &valid);
1200
1201       if (valid)
1202         g_array_append_val (possible_values, value);
1203     }
1204
1205   if (!support_ft)
1206     {
1207       g_array_unref (possible_values);
1208       return FALSE;
1209     }
1210
1211   if (possible_values->len == 0)
1212     {
1213       /* there are no channel classes with hash support, disable it. */
1214       priv->use_hash = FALSE;
1215       priv->content_hash_type = TP_FILE_HASH_TYPE_NONE;
1216
1217       goto out;
1218     }
1219
1220   priv->use_hash = TRUE;
1221
1222   if (possible_values->len == 1)
1223     {
1224       priv->content_hash_type = g_array_index (possible_values, guint, 0);
1225     }
1226   else
1227     {
1228       /* order the array and pick the first non zero, so that MD5
1229        * is the preferred value.
1230        */
1231       g_array_sort (possible_values, cmp_uint);
1232
1233       if (g_array_index (possible_values, guint, 0) == 0)
1234         priv->content_hash_type = g_array_index (possible_values, guint, 1);
1235       else
1236         priv->content_hash_type = g_array_index (possible_values, guint, 0);
1237     }
1238
1239 out:
1240   g_array_unref (possible_values);
1241
1242   DEBUG ("Hash enabled %s; setting content hash type as %u",
1243          priv->use_hash ? "True" : "False", priv->content_hash_type);
1244
1245   return TRUE;
1246 }
1247
1248 static void
1249 check_hashing (CallbacksData *data)
1250 {
1251   EmpathyFTHandler *handler = data->handler;
1252   EmpathyFTHandlerPriv *priv = handler->priv;
1253   GError *myerr = NULL;
1254   TpCapabilities *caps;
1255   GPtrArray *classes;
1256   TpConnection *conn;
1257
1258   conn = tp_account_get_connection (priv->account);
1259
1260   caps = tp_connection_get_capabilities (conn);
1261   if (caps == NULL)
1262     {
1263       data->callback (handler, NULL, data->user_data);
1264       goto out;
1265     }
1266
1267   classes = tp_capabilities_get_channel_classes (caps);
1268
1269   /* set whether we support hash and the type of it */
1270   if (!set_content_hash_type_from_classes (handler, classes))
1271     {
1272       g_set_error_literal (&myerr, EMPATHY_FT_ERROR_QUARK,
1273           EMPATHY_FT_ERROR_NOT_SUPPORTED,
1274           _("File transfer not supported by remote contact"));
1275
1276       if (!g_cancellable_is_cancelled (priv->cancellable))
1277         g_cancellable_cancel (priv->cancellable);
1278
1279       data->callback (handler, myerr, data->user_data);
1280       g_clear_error (&myerr);
1281     }
1282   else
1283     {
1284       /* get back to the caller now */
1285       data->callback (handler, NULL, data->user_data);
1286     }
1287
1288 out:
1289   callbacks_data_free (data);
1290 }
1291
1292 static void
1293 ft_handler_complete_request (EmpathyFTHandler *handler)
1294 {
1295   EmpathyFTHandlerPriv *priv = handler->priv;
1296
1297   /* populate the request table with all the known properties */
1298   ft_handler_populate_outgoing_request (handler);
1299
1300   if (priv->use_hash)
1301     /* start hashing the file */
1302     g_file_read_async (priv->gfile, G_PRIORITY_DEFAULT,
1303         priv->cancellable, ft_handler_read_async_cb, handler);
1304   else
1305     /* push directly the handler to the dispatcher */
1306     ft_handler_push_to_dispatcher (handler);
1307 }
1308
1309 static void
1310 ft_handler_gfile_ready_cb (GObject *source,
1311     GAsyncResult *res,
1312     CallbacksData *cb_data)
1313 {
1314   GFileInfo *info;
1315   GError *error = NULL;
1316   GTimeVal mtime;
1317   EmpathyFTHandlerPriv *priv = cb_data->handler->priv;
1318
1319   (void)source;     /* suppress unused-parameter warning */
1320
1321   DEBUG ("Got GFileInfo.");
1322
1323   info = g_file_query_info_finish (priv->gfile, res, &error);
1324
1325   if (error != NULL)
1326     goto out;
1327
1328   if (g_file_info_get_file_type (info) != G_FILE_TYPE_REGULAR)
1329     {
1330       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
1331           EMPATHY_FT_ERROR_INVALID_SOURCE_FILE,
1332           _("The selected file is not a regular file"));
1333       goto out;
1334     }
1335
1336   priv->total_bytes = g_file_info_get_size (info);
1337   if (priv->total_bytes == 0)
1338     {
1339       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
1340           EMPATHY_FT_ERROR_EMPTY_SOURCE_FILE,
1341           _("The selected file is empty"));
1342       goto out;
1343     }
1344
1345   priv->content_type = g_strdup (g_file_info_get_content_type (info));
1346   priv->filename = g_strdup (g_file_info_get_display_name (info));
1347   g_file_info_get_modification_time (info, &mtime);
1348   priv->mtime = mtime.tv_sec;
1349   priv->transferred_bytes = 0;
1350   priv->description = NULL;
1351
1352   g_object_unref (info);
1353
1354 out:
1355   if (error != NULL)
1356     {
1357       if (!g_cancellable_is_cancelled (priv->cancellable))
1358         g_cancellable_cancel (priv->cancellable);
1359
1360       cb_data->callback (cb_data->handler, error, cb_data->user_data);
1361       g_error_free (error);
1362
1363       callbacks_data_free (cb_data);
1364     }
1365   else
1366     {
1367       /* see if FT/hashing are allowed */
1368       check_hashing (cb_data);
1369     }
1370 }
1371
1372 static void
1373 channel_prepared_cb (
1374     GObject *source,
1375     GAsyncResult *result,
1376     gpointer user_data)
1377 {
1378   TpFileTransferChannel *channel = TP_FILE_TRANSFER_CHANNEL (source);
1379   CallbacksData *cb_data = user_data;
1380   EmpathyFTHandler *handler = cb_data->handler;
1381   EmpathyFTHandlerPriv *priv = handler->priv;
1382   GHashTable *properties;
1383   GError *error = NULL;
1384
1385   if (!tp_proxy_prepare_finish (channel, result, &error))
1386     {
1387       if (!g_cancellable_is_cancelled (priv->cancellable))
1388         g_cancellable_cancel (priv->cancellable);
1389
1390       cb_data->callback (handler, error, cb_data->user_data);
1391       g_clear_error (&error);
1392       callbacks_data_free (cb_data);
1393       return;
1394     }
1395   #pragma GCC diagnostic push
1396   #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
1397   properties = tp_channel_borrow_immutable_properties (TP_CHANNEL (channel));
1398   #pragma GCC diagnostic pop
1399
1400   priv->content_hash = g_strdup (
1401       tp_asv_get_string (properties, "ContentHash"));
1402
1403   priv->content_hash_type = tp_asv_get_uint32 (
1404       properties, "ContentHashType", NULL);
1405
1406   priv->contact = g_object_ref (tp_channel_get_target_contact (TP_CHANNEL (channel)));
1407
1408   cb_data->callback (handler, NULL, cb_data->user_data);
1409 }
1410
1411
1412 /* public methods */
1413
1414 /**
1415  * empathy_ft_handler_new_outgoing:
1416  * @account: the #TpAccount to send @source to
1417  * @contact: the #TpContact to send @source to
1418  * @source: the #GFile to send
1419  * @callback: callback to be called when the handler has been created
1420  * @user_data: user data to be passed to @callback
1421  *
1422  * Triggers the creation of a new #EmpathyFTHandler for an outgoing transfer.
1423  */
1424 void
1425 empathy_ft_handler_new_outgoing (
1426     TpAccount *account,
1427     TpContact *contact,
1428     GFile *source,
1429     gint64 action_time,
1430     EmpathyFTHandlerReadyCallback callback,
1431     gpointer user_data)
1432 {
1433   EmpathyFTHandler *handler;
1434   CallbacksData *data;
1435   EmpathyFTHandlerPriv *priv;
1436
1437   DEBUG ("New handler outgoing");
1438
1439   g_return_if_fail (TP_IS_ACCOUNT (account));
1440   g_return_if_fail (TP_IS_CONTACT (contact));
1441   g_return_if_fail (G_IS_FILE (source));
1442
1443   handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
1444       "account", account,
1445       "contact", contact,
1446       "gfile", source,
1447       "user-action-time", action_time,
1448       NULL);
1449
1450   priv = handler->priv;
1451
1452   data = g_slice_new0 (CallbacksData);
1453   data->callback = callback;
1454   data->user_data = user_data;
1455   data->handler = g_object_ref (handler);
1456
1457   /* start collecting info about the file */
1458   g_file_query_info_async (priv->gfile,
1459       G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME ","
1460       G_FILE_ATTRIBUTE_STANDARD_SIZE ","
1461       G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
1462       G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1463       G_FILE_ATTRIBUTE_TIME_MODIFIED,
1464       G_FILE_QUERY_INFO_NONE, G_PRIORITY_DEFAULT,
1465       NULL, (GAsyncReadyCallback) ft_handler_gfile_ready_cb, data);
1466 }
1467
1468 void
1469 empathy_ft_handler_set_service_name (
1470     EmpathyFTHandler *self,
1471     const gchar *service_name)
1472 {
1473   g_free (self->priv->service_name);
1474   self->priv->service_name = g_strdup (service_name);
1475 }
1476
1477 void
1478 empathy_ft_handler_set_description (
1479     EmpathyFTHandler *self,
1480     const gchar *description)
1481 {
1482   g_free (self->priv->description);
1483   self->priv->description = g_strdup (description);
1484 }
1485
1486 /**
1487  * empathy_ft_handler_new_incoming:
1488  * @channel: the #TpFileTransferChannel proxy to the incoming channel
1489  * @callback: callback to be called when the handler has been created
1490  * @user_data: user data to be passed to @callback
1491  *
1492  * Triggers the creation of a new #EmpathyFTHandler for an incoming transfer.
1493  * Note that for the handler to be useful, you will have to set a destination
1494  * file with empathy_ft_handler_incoming_set_destination() after the handler
1495  * is ready.
1496  */
1497 void
1498 empathy_ft_handler_new_incoming (TpFileTransferChannel *channel,
1499     EmpathyFTHandlerReadyCallback callback,
1500     gpointer user_data)
1501 {
1502   EmpathyFTHandler *handler;
1503   CallbacksData *data;
1504   EmpathyFTHandlerPriv *priv;
1505   GQuark features[] = { TP_CHANNEL_FEATURE_CONTACTS, 0 };
1506
1507   g_return_if_fail (TP_IS_FILE_TRANSFER_CHANNEL (channel));
1508
1509   handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
1510       "channel", channel, NULL);
1511
1512   priv = handler->priv;
1513
1514   data = g_slice_new0 (CallbacksData);
1515   data->callback = callback;
1516   data->user_data = user_data;
1517   data->handler = g_object_ref (handler);
1518
1519   priv->total_bytes = tp_file_transfer_channel_get_size (channel);
1520
1521   priv->transferred_bytes = tp_file_transfer_channel_get_transferred_bytes (
1522       channel);
1523
1524   priv->filename = g_strdup (tp_file_transfer_channel_get_filename (channel));
1525
1526   priv->content_type = g_strdup (tp_file_transfer_channel_get_mime_type (
1527       channel));
1528
1529   priv->description = g_strdup (tp_file_transfer_channel_get_description (
1530       channel));
1531
1532   tp_proxy_prepare_async (channel, features,
1533       channel_prepared_cb, data);
1534 }
1535
1536 /**
1537  * empathy_ft_handler_start_transfer:
1538  * @handler: an #EmpathyFTHandler
1539  *
1540  * Starts the transfer machinery. After this call, the transfer and hashing
1541  * signals will be emitted by the handler.
1542  */
1543 void
1544 empathy_ft_handler_start_transfer (EmpathyFTHandler *handler)
1545 {
1546   EmpathyFTHandlerPriv *priv;
1547
1548   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1549
1550   priv = handler->priv;
1551
1552   if (priv->channel == NULL)
1553     {
1554       ft_handler_complete_request (handler);
1555     }
1556   else
1557     {
1558       /* TODO: add support for resume. */
1559       tp_file_transfer_channel_accept_file_async (priv->channel,
1560           priv->gfile, 0, ft_transfer_accept_cb, handler);
1561
1562       tp_g_signal_connect_object (priv->channel, "notify::state",
1563           G_CALLBACK (ft_transfer_state_cb), handler, 0);
1564       tp_g_signal_connect_object (priv->channel, "notify::transferred-bytes",
1565           G_CALLBACK (ft_transfer_transferred_bytes_cb), handler, 0);
1566     }
1567 }
1568
1569 /**
1570  * empathy_ft_handler_cancel_transfer:
1571  * @handler: an #EmpathyFTHandler
1572  *
1573  * Cancels an ongoing handler operation. Note that this doesn't destroy
1574  * the object, which will keep all the properties, altough it won't be able
1575  * to do any more I/O.
1576  */
1577 void
1578 empathy_ft_handler_cancel_transfer (EmpathyFTHandler *handler)
1579 {
1580   EmpathyFTHandlerPriv *priv;
1581
1582   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1583
1584   priv = handler->priv;
1585
1586   /* if we don't have a channel, we are hashing, so
1587    * we can just cancel the GCancellable to stop it.
1588    */
1589   if (priv->channel == NULL)
1590     g_cancellable_cancel (priv->cancellable);
1591   else
1592     tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
1593 }
1594
1595 /**
1596  * empathy_ft_handler_incoming_set_destination:
1597  * @handler: an #EmpathyFTHandler
1598  * @destination: the #GFile where the transfer should be saved
1599  *
1600  * Sets the destination of the incoming handler to be @destination.
1601  * Note that calling this method is mandatory before starting the transfer
1602  * for incoming handlers.
1603  */
1604 void
1605 empathy_ft_handler_incoming_set_destination (EmpathyFTHandler *handler,
1606     GFile *destination)
1607 {
1608   EmpathyFTHandlerPriv *priv;
1609
1610   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1611   g_return_if_fail (G_IS_FILE (destination));
1612
1613   priv = handler->priv;
1614
1615   g_object_set (handler, "gfile", destination, NULL);
1616
1617   /* check if hash is supported. if it isn't, set use_hash to FALSE
1618    * anyway, so that clients won't be expecting us to checksum.
1619    */
1620   if (tp_str_empty (priv->content_hash) ||
1621       priv->content_hash_type == TP_FILE_HASH_TYPE_NONE)
1622     priv->use_hash = FALSE;
1623   else
1624     priv->use_hash = TRUE;
1625 }
1626
1627 /**
1628  * empathy_ft_handler_get_filename:
1629  * @handler: an #EmpathyFTHandler
1630  *
1631  * Returns the name of the file being transferred.
1632  *
1633  * Return value: the name of the file being transferred
1634  */
1635 const char *
1636 empathy_ft_handler_get_filename (EmpathyFTHandler *handler)
1637 {
1638   EmpathyFTHandlerPriv *priv;
1639
1640   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1641
1642   priv = handler->priv;
1643
1644   return priv->filename;
1645 }
1646
1647 const char *
1648 empathy_ft_handler_get_description (EmpathyFTHandler *handler)
1649 {
1650   EmpathyFTHandlerPriv *priv;
1651
1652   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1653
1654   priv = handler->priv;
1655
1656   return priv->description;
1657 }
1658
1659 /**
1660  * empathy_ft_handler_get_content_type:
1661  * @handler: an #EmpathyFTHandler
1662  *
1663  * Returns the content type of the file being transferred.
1664  *
1665  * Return value: the content type of the file being transferred
1666  */
1667 const char *
1668 empathy_ft_handler_get_content_type (EmpathyFTHandler *handler)
1669 {
1670   EmpathyFTHandlerPriv *priv;
1671
1672   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1673
1674   priv = handler->priv;
1675
1676   return priv->content_type;
1677 }
1678
1679 /**
1680  * empathy_ft_handler_get_contact:
1681  * @handler: an #EmpathyFTHandler
1682  *
1683  * Returns the remote #TpContact at the other side of the transfer.
1684  *
1685  * Return value: the remote #TpContact for @handler
1686  */
1687 TpContact *
1688 empathy_ft_handler_get_contact (EmpathyFTHandler *handler)
1689 {
1690   EmpathyFTHandlerPriv *priv;
1691
1692   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1693
1694   priv = handler->priv;
1695
1696   return priv->contact;
1697 }
1698
1699 /**
1700  * empathy_ft_handler_get_gfile:
1701  * @handler: an #EmpathyFTHandler
1702  *
1703  * Returns the #GFile where the transfer is being read/saved.
1704  *
1705  * Return value: the #GFile where the transfer is being read/saved
1706  */
1707 GFile *
1708 empathy_ft_handler_get_gfile (EmpathyFTHandler *handler)
1709 {
1710   EmpathyFTHandlerPriv *priv;
1711
1712   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1713
1714   priv = handler->priv;
1715
1716   return priv->gfile;
1717 }
1718
1719 /**
1720  * empathy_ft_handler_get_use_hash:
1721  * @handler: an #EmpathyFTHandler
1722  *
1723  * Returns whether @handler has checksumming enabled. This can depend on
1724  * the CM and the remote contact capabilities.
1725  *
1726  * Return value: %TRUE if the handler has checksumming enabled,
1727  * %FALSE otherwise.
1728  */
1729 gboolean
1730 empathy_ft_handler_get_use_hash (EmpathyFTHandler *handler)
1731 {
1732   EmpathyFTHandlerPriv *priv;
1733
1734   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1735
1736   priv = handler->priv;
1737
1738   return priv->use_hash;
1739 }
1740
1741 /**
1742  * empathy_ft_handler_is_incoming:
1743  * @handler: an #EmpathyFTHandler
1744  *
1745  * Returns whether @handler is incoming or outgoing.
1746  *
1747  * Return value: %TRUE if the handler is incoming, %FALSE otherwise.
1748  */
1749 gboolean
1750 empathy_ft_handler_is_incoming (EmpathyFTHandler *handler)
1751 {
1752   EmpathyFTHandlerPriv *priv;
1753
1754   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1755
1756   priv = handler->priv;
1757
1758   if (priv->channel == NULL)
1759     return FALSE;
1760
1761   return !tp_channel_get_requested ((TpChannel *) priv->channel);
1762 }
1763
1764 /**
1765  * empathy_ft_handler_get_transferred_bytes:
1766  * @handler: an #EmpathyFTHandler
1767  *
1768  * Returns the number of bytes already transferred by the handler.
1769  *
1770  * Return value: the number of bytes already transferred by the handler.
1771  */
1772 guint64
1773 empathy_ft_handler_get_transferred_bytes (EmpathyFTHandler *handler)
1774 {
1775   EmpathyFTHandlerPriv *priv;
1776
1777   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
1778
1779   priv = handler->priv;
1780
1781   return priv->transferred_bytes;
1782 }
1783
1784 /**
1785  * empathy_ft_handler_get_total_bytes:
1786  * @handler: an #EmpathyFTHandler
1787  *
1788  * Returns the total size of the file being transferred by the handler.
1789  *
1790  * Return value: a number of bytes indicating the total size of the file being
1791  * transferred by the handler.
1792  */
1793 guint64
1794 empathy_ft_handler_get_total_bytes (EmpathyFTHandler *handler)
1795 {
1796   EmpathyFTHandlerPriv *priv;
1797
1798   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
1799
1800   priv = handler->priv;
1801
1802   return priv->total_bytes;
1803 }
1804
1805 /**
1806  * empathy_ft_handler_is_completed:
1807  * @handler: an #EmpathyFTHandler
1808  *
1809  * Returns whether the transfer for @handler has been completed successfully.
1810  *
1811  * Return value: %TRUE if the handler has been transferred correctly, %FALSE
1812  * otherwise
1813  */
1814 gboolean
1815 empathy_ft_handler_is_completed (EmpathyFTHandler *handler)
1816 {
1817   EmpathyFTHandlerPriv *priv;
1818
1819   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1820
1821   priv = handler->priv;
1822
1823   return priv->is_completed;
1824 }
1825
1826 /**
1827  * empathy_ft_handler_is_cancelled:
1828  * @handler: an #EmpathyFTHandler
1829  *
1830  * Returns whether the transfer for @handler has been cancelled or has stopped
1831  * due to an error.
1832  *
1833  * Return value: %TRUE if the transfer for @handler has been cancelled
1834  * or has stopped due to an error, %FALSE otherwise.
1835  */
1836 gboolean
1837 empathy_ft_handler_is_cancelled (EmpathyFTHandler *handler)
1838 {
1839   EmpathyFTHandlerPriv *priv;
1840
1841   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1842
1843   priv = handler->priv;
1844
1845   return g_cancellable_is_cancelled (priv->cancellable);
1846 }