libempathy/empathy-ft-handler.c

   1 /*
   2  * empathy-ft-handler.c - Source for EmpathyFTHandler
   3  * Copyright (C) 2009 Collabora Ltd.
   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  * Author: Cosimo Cecchi <cosimo.cecchi@collabora.co.uk>
  20  */
  21
  22 /* empathy-ft-handler.c */
  23
  24 #include <glib.h>
  25 #include <glib/gi18n.h>
  26 #include <telepathy-glib/account-channel-request.h>
  27 #include <telepathy-glib/util.h>
  28 #include <telepathy-glib/dbus.h>
  29 #include <telepathy-glib/interfaces.h>
  30
  31 #include "empathy-ft-handler.h"
  32 #include "empathy-tp-contact-factory.h"
  33 #include "empathy-time.h"
  34 #include "empathy-utils.h"
  35
  36 #define DEBUG_FLAG EMPATHY_DEBUG_FT
  37 #include "empathy-debug.h"
  38
  39 /**
  40  * SECTION:empathy-ft-handler
  41  * @title: EmpathyFTHandler
  42  * @short_description: an object representing a File Transfer
  43  * @include: libempathy/empathy-ft-handler
  44  *
  45  * #EmpathyFTHandler is the object which represents a File Transfer with all
  46  * its properties.
  47  * The creation of an #EmpathyFTHandler is done with
  48  * empathy_ft_handler_new_outgoing() or empathy_ft_handler_new_incoming(),
  49  * even though clients should not need to call them directly, as
  50  * #EmpathyFTFactory does it for them. Remember that for the file transfer
  51  * to work with an incoming handler,
  52  * empathy_ft_handler_incoming_set_destination() should be called after
  53  * empathy_ft_handler_new_incoming(). #EmpathyFTFactory does this
  54  * automatically.
  55  * It's important to note that, as the creation of the handlers is async, once
  56  * an handler is created, it already has all the interesting properties set,
  57  * like filename, total bytes, content type and so on, making it useful
  58  * to be displayed in an UI.
  59  * The transfer API works like a state machine; it has three signals,
  60  * ::transfer-started, ::transfer-progress, ::transfer-done, which will be
  61  * emitted in the relevant phases.
  62  * In addition, if the handler is created with checksumming enabled,
  63  * other three signals (::hashing-started, ::hashing-progress, ::hashing-done)
  64  * will be emitted before or after the transfer, depending on the direction
  65  * (respectively outgoing and incoming) of the handler.
  66  * At any time between the call to empathy_ft_handler_start_transfer() and
  67  * the last signal, a ::transfer-error can be emitted, indicating that an
  68  * error has happened in the operation. The message of the error is localized
  69  * to use in an UI.
  70  */
  71
  72 G_DEFINE_TYPE (EmpathyFTHandler, empathy_ft_handler, G_TYPE_OBJECT)
  73
  74 #define GET_PRIV(obj) EMPATHY_GET_PRIV (obj, EmpathyFTHandler)
  75
  76 #define BUFFER_SIZE 4096
  77
  78 enum {
  79   PROP_CHANNEL = 1,
  80   PROP_G_FILE,
  81   PROP_CONTACT,
  82   PROP_CONTENT_TYPE,
  83   PROP_DESCRIPTION,
  84   PROP_FILENAME,
  85   PROP_MODIFICATION_TIME,
  86   PROP_TOTAL_BYTES,
  87   PROP_TRANSFERRED_BYTES,
  88   PROP_USER_ACTION_TIME
  89 };
  90
  91 enum {
  92   HASHING_STARTED,
  93   HASHING_PROGRESS,
  94   HASHING_DONE,
  95   TRANSFER_STARTED,
  96   TRANSFER_PROGRESS,
  97   TRANSFER_DONE,
  98   TRANSFER_ERROR,
  99   LAST_SIGNAL
 100 };
 101
 102 typedef struct {
 103   GInputStream *stream;
 104   GError *error /* comment to make the style checker happy */;
 105   guchar *buffer;
 106   GChecksum *checksum;
 107   gssize total_read;
 108   guint64 total_bytes;
 109   EmpathyFTHandler *handler;
 110 } HashingData;
 111
 112 typedef struct {
 113   EmpathyFTHandlerReadyCallback callback;
 114   gpointer user_data;
 115   EmpathyFTHandler *handler;
 116 } CallbacksData;
 117
 118 /* private data */
 119 typedef struct {
 120   gboolean dispose_run;
 121
 122   GFile *gfile;
 123   TpFileTransferChannel *channel;
 124   GCancellable *cancellable;
 125   gboolean use_hash;
 126
 127   /* request for the new transfer */
 128   GHashTable *request;
 129
 130   /* transfer properties */
 131   EmpathyContact *contact;
 132   gchar *content_type;
 133   gchar *filename;
 134   gchar *description;
 135   guint64 total_bytes;
 136   guint64 transferred_bytes;
 137   guint64 mtime;
 138   gchar *content_hash;
 139   TpFileHashType content_hash_type;
 140
 141   gint64 user_action_time;
 142
 143   /* time and speed */
 144   gdouble speed;
 145   guint remaining_time;
 146   gint64 last_update_time;
 147
 148   gboolean is_completed;
 149 } EmpathyFTHandlerPriv;
 150
 151 static guint signals[LAST_SIGNAL] = { 0 };
 152
 153 static gboolean do_hash_job_incoming (GIOSchedulerJob *job,
 154     GCancellable *cancellable, gpointer user_data);
 155
 156 /* GObject implementations */
 157 static void
 158 do_get_property (GObject *object,
 159     guint property_id,
 160     GValue *value,
 161     GParamSpec *pspec)
 162 {
 163   EmpathyFTHandlerPriv *priv = GET_PRIV (object);
 164
 165   switch (property_id)
 166     {
 167       case PROP_CONTACT:
 168         g_value_set_object (value, priv->contact);
 169         break;
 170       case PROP_CONTENT_TYPE:
 171         g_value_set_string (value, priv->content_type);
 172         break;
 173       case PROP_DESCRIPTION:
 174         g_value_set_string (value, priv->description);
 175         break;
 176       case PROP_FILENAME:
 177         g_value_set_string (value, priv->filename);
 178         break;
 179       case PROP_MODIFICATION_TIME:
 180         g_value_set_uint64 (value, priv->mtime);
 181         break;
 182       case PROP_TOTAL_BYTES:
 183         g_value_set_uint64 (value, priv->total_bytes);
 184         break;
 185       case PROP_TRANSFERRED_BYTES:
 186         g_value_set_uint64 (value, priv->transferred_bytes);
 187         break;
 188       case PROP_G_FILE:
 189         g_value_set_object (value, priv->gfile);
 190         break;
 191       case PROP_CHANNEL:
 192         g_value_set_object (value, priv->channel);
 193         break;
 194       case PROP_USER_ACTION_TIME:
 195         g_value_set_int64 (value, priv->user_action_time);
 196         break;
 197       default:
 198         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 199     }
 200 }
 201
 202 static void
 203 do_set_property (GObject *object,
 204     guint property_id,
 205     const GValue *value,
 206     GParamSpec *pspec)
 207 {
 208   EmpathyFTHandlerPriv *priv = GET_PRIV (object);
 209
 210   switch (property_id)
 211     {
 212       case PROP_CONTACT:
 213         priv->contact = g_value_dup_object (value);
 214         break;
 215       case PROP_CONTENT_TYPE:
 216         priv->content_type = g_value_dup_string (value);
 217         break;
 218       case PROP_DESCRIPTION:
 219         priv->description = g_value_dup_string (value);
 220         break;
 221       case PROP_FILENAME:
 222         priv->filename = g_value_dup_string (value);
 223         break;
 224       case PROP_MODIFICATION_TIME:
 225         priv->mtime = g_value_get_uint64 (value);
 226         break;
 227       case PROP_TOTAL_BYTES:
 228         priv->total_bytes = g_value_get_uint64 (value);
 229         break;
 230       case PROP_TRANSFERRED_BYTES:
 231         priv->transferred_bytes = g_value_get_uint64 (value);
 232         break;
 233       case PROP_G_FILE:
 234         priv->gfile = g_value_dup_object (value);
 235         break;
 236       case PROP_CHANNEL:
 237         priv->channel = g_value_dup_object (value);
 238         break;
 239       case PROP_USER_ACTION_TIME:
 240         priv->user_action_time = g_value_get_int64 (value);
 241         break;
 242       default:
 243         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
 244     }
 245 }
 246
 247 static void
 248 do_dispose (GObject *object)
 249 {
 250   EmpathyFTHandlerPriv *priv = GET_PRIV (object);
 251
 252   if (priv->dispose_run)
 253     return;
 254
 255   priv->dispose_run = TRUE;
 256
 257   if (priv->contact != NULL) {
 258     g_object_unref (priv->contact);
 259     priv->contact = NULL;
 260   }
 261
 262   if (priv->gfile != NULL) {
 263     g_object_unref (priv->gfile);
 264     priv->gfile = NULL;
 265   }
 266
 267   if (priv->channel != NULL) {
 268     tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
 269     g_object_unref (priv->channel);
 270     priv->channel = NULL;
 271   }
 272
 273   if (priv->cancellable != NULL) {
 274     g_object_unref (priv->cancellable);
 275     priv->cancellable = NULL;
 276   }
 277
 278   if (priv->request != NULL)
 279     {
 280       g_hash_table_unref (priv->request);
 281       priv->request = NULL;
 282     }
 283
 284   G_OBJECT_CLASS (empathy_ft_handler_parent_class)->dispose (object);
 285 }
 286
 287 static void
 288 do_finalize (GObject *object)
 289 {
 290   EmpathyFTHandlerPriv *priv = GET_PRIV (object);
 291
 292   DEBUG ("%p", object);
 293
 294   g_free (priv->content_type);
 295   priv->content_type = NULL;
 296
 297   g_free (priv->filename);
 298   priv->filename = NULL;
 299
 300   g_free (priv->description);
 301   priv->description = NULL;
 302
 303   g_free (priv->content_hash);
 304   priv->content_hash = NULL;
 305
 306   G_OBJECT_CLASS (empathy_ft_handler_parent_class)->finalize (object);
 307 }
 308
 309 static void
 310 empathy_ft_handler_class_init (EmpathyFTHandlerClass *klass)
 311 {
 312   GObjectClass *object_class = G_OBJECT_CLASS (klass);
 313   GParamSpec *param_spec;
 314
 315   g_type_class_add_private (klass, sizeof (EmpathyFTHandlerPriv));
 316
 317   object_class->get_property = do_get_property;
 318   object_class->set_property = do_set_property;
 319   object_class->dispose = do_dispose;
 320   object_class->finalize = do_finalize;
 321
 322   /* properties */
 323
 324   /**
 325    * EmpathyFTHandler:contact:
 326    *
 327    * The remote #EmpathyContact for the transfer
 328    */
 329   param_spec = g_param_spec_object ("contact",
 330     "contact", "The remote contact",
 331     EMPATHY_TYPE_CONTACT,
 332     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 333   g_object_class_install_property (object_class, PROP_CONTACT, param_spec);
 334
 335   /**
 336    * EmpathyFTHandler:content-type:
 337    *
 338    * The content type of the file being transferred
 339    */
 340   param_spec = g_param_spec_string ("content-type",
 341     "content-type", "The content type of the file", NULL,
 342     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 343   g_object_class_install_property (object_class,
 344       PROP_CONTENT_TYPE, param_spec);
 345
 346   /**
 347    * EmpathyFTHandler:description:
 348    *
 349    * The description of the file being transferred
 350    */
 351   param_spec = g_param_spec_string ("description",
 352     "description", "The description of the file", NULL,
 353     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 354   g_object_class_install_property (object_class,
 355       PROP_DESCRIPTION, param_spec);
 356
 357   /**
 358    * EmpathyFTHandler:filename:
 359    *
 360    * The name of the file being transferred
 361    */
 362   param_spec = g_param_spec_string ("filename",
 363     "filename", "The name of the file", NULL,
 364     G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 365   g_object_class_install_property (object_class,
 366       PROP_FILENAME, param_spec);
 367
 368   /**
 369    * EmpathyFTHandler:modification-time:
 370    *
 371    * The modification time of the file being transferred
 372    */
 373   param_spec = g_param_spec_uint64 ("modification-time",
 374     "modification-time", "The mtime of the file", 0,
 375     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 376   g_object_class_install_property (object_class,
 377       PROP_MODIFICATION_TIME, param_spec);
 378
 379   /**
 380    * EmpathyFTHandler:total-bytes:
 381    *
 382    * The size (in bytes) of the file being transferred
 383    */
 384   param_spec = g_param_spec_uint64 ("total-bytes",
 385     "total-bytes", "The size of the file", 0,
 386     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 387   g_object_class_install_property (object_class,
 388       PROP_TOTAL_BYTES, param_spec);
 389
 390   /**
 391    * EmpathyFTHandler:transferred-bytes:
 392    *
 393    * The number of the bytes already transferred
 394    */
 395   param_spec = g_param_spec_uint64 ("transferred-bytes",
 396     "transferred-bytes", "The number of bytes already transferred", 0,
 397     G_MAXUINT64, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS);
 398   g_object_class_install_property (object_class,
 399       PROP_TRANSFERRED_BYTES, param_spec);
 400
 401   /**
 402    * EmpathyFTHandler:gfile:
 403    *
 404    * The #GFile object where the transfer actually happens
 405    */
 406   param_spec = g_param_spec_object ("gfile",
 407     "gfile", "The GFile we're handling",
 408     G_TYPE_FILE,
 409     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
 410   g_object_class_install_property (object_class, PROP_G_FILE, param_spec);
 411
 412   /**
 413    * EmpathyFTHandler:channel:
 414    *
 415    * The underlying #TpFileTransferChannel managing the transfer
 416    */
 417   param_spec = g_param_spec_object ("channel",
 418     "channel", "The file transfer channel",
 419     TP_TYPE_FILE_TRANSFER_CHANNEL,
 420     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 421   g_object_class_install_property (object_class, PROP_CHANNEL, param_spec);
 422
 423   param_spec = g_param_spec_int64 ("user-action-time", "user action time",
 424     "User action time",
 425     0, G_MAXINT64, 0,
 426     G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS | G_PARAM_CONSTRUCT_ONLY);
 427   g_object_class_install_property (object_class, PROP_USER_ACTION_TIME,
 428       param_spec);
 429
 430   /* signals */
 431
 432   /**
 433    * EmpathyFTHandler::transfer-started
 434    * @handler: the object which has received the signal
 435    * @channel: the #TpFileTransferChannel for which the transfer has started
 436    *
 437    * This signal is emitted when the actual transfer starts.
 438    */
 439   signals[TRANSFER_STARTED] =
 440     g_signal_new ("transfer-started", G_TYPE_FROM_CLASS (klass),
 441         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 442         g_cclosure_marshal_generic,
 443         G_TYPE_NONE,
 444         1, TP_TYPE_FILE_TRANSFER_CHANNEL);
 445
 446   /**
 447    * EmpathyFTHandler::transfer-done
 448    * @handler: the object which has received the signal
 449    * @channel: the #TpFileTransferChannel for which the transfer has started
 450    *
 451    * This signal will be emitted when the actual transfer is completed
 452    * successfully.
 453    */
 454   signals[TRANSFER_DONE] =
 455     g_signal_new ("transfer-done", G_TYPE_FROM_CLASS (klass),
 456         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 457         g_cclosure_marshal_generic,
 458         G_TYPE_NONE,
 459         1, TP_TYPE_FILE_TRANSFER_CHANNEL);
 460
 461   /**
 462    * EmpathyFTHandler::transfer-error
 463    * @handler: the object which has received the signal
 464    * @error: a #GError
 465    *
 466    * This signal can be emitted anytime between the call to
 467    * empathy_ft_handler_start_transfer() and the last expected signal
 468    * (::transfer-done or ::hashing-done), and it's guaranteed to be the last
 469    * signal coming from the handler, meaning that no other operation will
 470    * take place after this signal.
 471    */
 472   signals[TRANSFER_ERROR] =
 473     g_signal_new ("transfer-error", G_TYPE_FROM_CLASS (klass),
 474         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 475         g_cclosure_marshal_generic,
 476         G_TYPE_NONE,
 477         1, G_TYPE_POINTER);
 478
 479   /**
 480    * EmpathyFTHandler::transfer-progress
 481    * @handler: the object which has received the signal
 482    * @current_bytes: the bytes currently transferred
 483    * @total_bytes: the total bytes of the handler
 484    * @remaining_time: the number of seconds remaining for the transfer
 485    * to be completed
 486    * @speed: the current speed of the transfer (in KB/s)
 487    *
 488    * This signal is emitted to notify clients of the progress of the
 489    * transfer.
 490    */
 491   signals[TRANSFER_PROGRESS] =
 492     g_signal_new ("transfer-progress", G_TYPE_FROM_CLASS (klass),
 493         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 494         g_cclosure_marshal_generic,
 495         G_TYPE_NONE,
 496         4, G_TYPE_UINT64, G_TYPE_UINT64, G_TYPE_UINT, G_TYPE_DOUBLE);
 497
 498   /**
 499    * EmpathyFTHandler::hashing-started
 500    * @handler: the object which has received the signal
 501    *
 502    * This signal is emitted when the hashing operation of the handler
 503    * is started. Note that this might happen or not, depending on the CM
 504    * and remote contact capabilities. Clients shoud use
 505    * empathy_ft_handler_get_use_hash() before calling
 506    * empathy_ft_handler_start_transfer() to know whether they should connect
 507    * to this signal.
 508    */
 509   signals[HASHING_STARTED] =
 510     g_signal_new ("hashing-started", G_TYPE_FROM_CLASS (klass),
 511         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 512         g_cclosure_marshal_generic,
 513         G_TYPE_NONE, 0);
 514
 515   /**
 516    * EmpathyFTHandler::hashing-progress
 517    * @handler: the object which has received the signal
 518    * @current_bytes: the bytes currently hashed
 519    * @total_bytes: the total bytes of the handler
 520    *
 521    * This signal is emitted to notify clients of the progress of the
 522    * hashing operation.
 523    */
 524   signals[HASHING_PROGRESS] =
 525     g_signal_new ("hashing-progress", G_TYPE_FROM_CLASS (klass),
 526         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 527         g_cclosure_marshal_generic,
 528         G_TYPE_NONE,
 529         2, G_TYPE_UINT64, G_TYPE_UINT64);
 530
 531   /**
 532    * EmpathyFTHandler::hashing-done
 533    * @handler: the object which has received the signal
 534    *
 535    * This signal is emitted when the hashing operation of the handler
 536    * is completed.
 537    */
 538   signals[HASHING_DONE] =
 539     g_signal_new ("hashing-done", G_TYPE_FROM_CLASS (klass),
 540         G_SIGNAL_RUN_LAST, 0, NULL, NULL,
 541         g_cclosure_marshal_generic,
 542         G_TYPE_NONE, 0);
 543 }
 544
 545 static void
 546 empathy_ft_handler_init (EmpathyFTHandler *self)
 547 {
 548   EmpathyFTHandlerPriv *priv = G_TYPE_INSTANCE_GET_PRIVATE (self,
 549     EMPATHY_TYPE_FT_HANDLER, EmpathyFTHandlerPriv);
 550
 551   self->priv = priv;
 552   priv->cancellable = g_cancellable_new ();
 553 }
 554
 555 /* private functions */
 556
 557 static void
 558 hash_data_free (HashingData *data)
 559 {
 560   g_free (data->buffer);
 561
 562   if (data->stream != NULL)
 563     g_object_unref (data->stream);
 564
 565   if (data->checksum != NULL)
 566     g_checksum_free (data->checksum);
 567
 568   if (data->error != NULL)
 569     g_error_free (data->error);
 570
 571   if (data->handler != NULL)
 572     g_object_unref (data->handler);
 573
 574   g_slice_free (HashingData, data);
 575 }
 576
 577 static GChecksumType
 578 tp_file_hash_to_g_checksum (TpFileHashType type)
 579 {
 580   GChecksumType retval;
 581
 582   switch (type)
 583     {
 584       case TP_FILE_HASH_TYPE_MD5:
 585         retval = G_CHECKSUM_MD5;
 586         break;
 587       case TP_FILE_HASH_TYPE_SHA1:
 588         retval = G_CHECKSUM_SHA1;
 589         break;
 590       case TP_FILE_HASH_TYPE_SHA256:
 591         retval = G_CHECKSUM_SHA256;
 592         break;
 593       case TP_FILE_HASH_TYPE_NONE:
 594       default:
 595         g_assert_not_reached ();
 596         break;
 597     }
 598
 599   return retval;
 600 }
 601
 602 static void
 603 check_hash_incoming (EmpathyFTHandler *handler)
 604 {
 605   HashingData *hash_data;
 606   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 607
 608   if (!EMP_STR_EMPTY (priv->content_hash))
 609     {
 610       hash_data = g_slice_new0 (HashingData);
 611       hash_data->total_bytes = priv->total_bytes;
 612       hash_data->handler = g_object_ref (handler);
 613       hash_data->checksum = g_checksum_new
 614         (tp_file_hash_to_g_checksum (priv->content_hash_type));
 615
 616       g_signal_emit (handler, signals[HASHING_STARTED], 0);
 617
 618       g_io_scheduler_push_job (do_hash_job_incoming, hash_data, NULL,
 619                                G_PRIORITY_DEFAULT, priv->cancellable);
 620     }
 621 }
 622
 623 static void
 624 emit_error_signal (EmpathyFTHandler *handler,
 625     const GError *error)
 626 {
 627   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 628
 629   DEBUG ("Error in transfer: %s\n", error->message);
 630
 631   if (!g_cancellable_is_cancelled (priv->cancellable))
 632     g_cancellable_cancel (priv->cancellable);
 633
 634   g_signal_emit (handler, signals[TRANSFER_ERROR], 0, error);
 635 }
 636
 637 static void
 638 update_remaining_time_and_speed (EmpathyFTHandler *handler,
 639     guint64 transferred_bytes)
 640 {
 641   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 642   gint64 elapsed_time, current_time;
 643   guint64 transferred, last_transferred_bytes;
 644   gdouble speed;
 645   gint remaining_time;
 646
 647   last_transferred_bytes = priv->transferred_bytes;
 648   priv->transferred_bytes = transferred_bytes;
 649
 650   current_time = empathy_time_get_current ();
 651   elapsed_time = current_time - priv->last_update_time;
 652
 653   if (elapsed_time >= 1)
 654     {
 655       transferred = transferred_bytes - last_transferred_bytes;
 656       speed = (gdouble) transferred / (gdouble) elapsed_time;
 657       remaining_time = (priv->total_bytes - priv->transferred_bytes) / speed;
 658       priv->speed = speed;
 659       priv->remaining_time = remaining_time;
 660       priv->last_update_time = current_time;
 661     }
 662 }
 663
 664 static void
 665 ft_transfer_transferred_bytes_cb (TpFileTransferChannel *channel,
 666     GParamSpec *pspec,
 667     EmpathyFTHandler *handler)
 668 {
 669   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 670   guint64 bytes;
 671
 672   if (empathy_ft_handler_is_cancelled (handler))
 673     return;
 674
 675   bytes = tp_file_transfer_channel_get_transferred_bytes (channel);
 676
 677   if (priv->transferred_bytes == 0)
 678     {
 679       priv->last_update_time = empathy_time_get_current ();
 680       g_signal_emit (handler, signals[TRANSFER_STARTED], 0, channel);
 681     }
 682
 683   if (priv->transferred_bytes != bytes)
 684     {
 685       update_remaining_time_and_speed (handler, bytes);
 686
 687       g_signal_emit (handler, signals[TRANSFER_PROGRESS], 0,
 688           bytes, priv->total_bytes, priv->remaining_time,
 689           priv->speed);
 690     }
 691 }
 692
 693 static void
 694 ft_transfer_provide_cb (GObject *source,
 695     GAsyncResult *result,
 696     gpointer user_data)
 697 {
 698   TpFileTransferChannel *channel = TP_FILE_TRANSFER_CHANNEL (source);
 699   EmpathyFTHandler *handler = user_data;
 700   GError *error = NULL;
 701
 702   if (!tp_file_transfer_channel_provide_file_finish (channel, result, &error))
 703     {
 704       emit_error_signal (handler, error);
 705       g_clear_error (&error);
 706     }
 707 }
 708
 709 static void
 710 ft_transfer_accept_cb (GObject *source,
 711     GAsyncResult *result,
 712     gpointer user_data)
 713 {
 714   TpFileTransferChannel *channel = TP_FILE_TRANSFER_CHANNEL (source);
 715   EmpathyFTHandler *handler = user_data;
 716   GError *error = NULL;
 717
 718   if (!tp_file_transfer_channel_accept_file_finish (channel, result, &error))
 719     {
 720       emit_error_signal (handler, error);
 721       g_clear_error (&error);
 722     }
 723 }
 724
 725 static GError *
 726 error_from_state_change_reason (TpFileTransferStateChangeReason reason)
 727 {
 728   const char *string;
 729   GError *retval = NULL;
 730
 731   string = NULL;
 732
 733   switch (reason)
 734     {
 735       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_NONE:
 736         string = _("No reason was specified");
 737         break;
 738       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REQUESTED:
 739         string = _("The change in state was requested");
 740         break;
 741       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_STOPPED:
 742         string = _("You canceled the file transfer");
 743         break;
 744       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_STOPPED:
 745         string = _("The other participant canceled the file transfer");
 746         break;
 747       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_LOCAL_ERROR:
 748         string = _("Error while trying to transfer the file");
 749         break;
 750       case TP_FILE_TRANSFER_STATE_CHANGE_REASON_REMOTE_ERROR:
 751         string = _("The other participant is unable to transfer the file");
 752         break;
 753       default:
 754         string = _("Unknown reason");
 755         break;
 756     }
 757
 758   retval = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 759       EMPATHY_FT_ERROR_TP_ERROR, string);
 760
 761   return retval;
 762 }
 763
 764 static void
 765 ft_transfer_state_cb (TpFileTransferChannel *channel,
 766     GParamSpec *pspec,
 767     EmpathyFTHandler *handler)
 768 {
 769   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 770   TpFileTransferStateChangeReason reason;
 771   TpFileTransferState state = tp_file_transfer_channel_get_state (
 772       channel, &reason);
 773
 774   if (state == TP_FILE_TRANSFER_STATE_COMPLETED)
 775     {
 776       priv->is_completed = TRUE;
 777       g_signal_emit (handler, signals[TRANSFER_DONE], 0, channel);
 778
 779       tp_channel_close_async (TP_CHANNEL (channel), NULL, NULL);
 780
 781       if (empathy_ft_handler_is_incoming (handler) && priv->use_hash)
 782         {
 783           check_hash_incoming (handler);
 784         }
 785     }
 786   else if (state == TP_FILE_TRANSFER_STATE_CANCELLED)
 787     {
 788       GError *error = error_from_state_change_reason (reason);
 789       emit_error_signal (handler, error);
 790       g_clear_error (&error);
 791     }
 792 }
 793
 794 static void
 795 ft_handler_create_channel_cb (GObject *source,
 796     GAsyncResult *result,
 797     gpointer user_data)
 798 {
 799   EmpathyFTHandler *handler = user_data;
 800   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 801   GError *error = NULL;
 802   TpChannel *channel;
 803
 804   DEBUG ("Dispatcher create channel CB");
 805
 806   channel = tp_account_channel_request_create_and_handle_channel_finish (
 807         TP_ACCOUNT_CHANNEL_REQUEST (source), result, NULL, &error);
 808
 809   if (channel == NULL)
 810     DEBUG ("Failed to request FT channel: %s", error->message);
 811   else
 812     g_cancellable_set_error_if_cancelled (priv->cancellable, &error);
 813
 814   if (error != NULL)
 815     {
 816       emit_error_signal (handler, error);
 817
 818       g_clear_object (&channel);
 819       g_error_free (error);
 820       return;
 821     }
 822
 823   priv->channel = TP_FILE_TRANSFER_CHANNEL (channel);
 824
 825   tp_g_signal_connect_object (priv->channel, "notify::state",
 826       G_CALLBACK (ft_transfer_state_cb), handler, 0);
 827   tp_g_signal_connect_object (priv->channel, "notify::transferred-bytes",
 828       G_CALLBACK (ft_transfer_transferred_bytes_cb), handler, 0);
 829
 830   tp_file_transfer_channel_provide_file_async (priv->channel, priv->gfile,
 831       ft_transfer_provide_cb, handler);
 832 }
 833
 834 static void
 835 ft_handler_push_to_dispatcher (EmpathyFTHandler *handler)
 836 {
 837   TpAccount *account;
 838   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 839   TpAccountChannelRequest *req;
 840
 841   DEBUG ("Pushing request to the dispatcher");
 842
 843   account = empathy_contact_get_account (priv->contact);
 844
 845   req = tp_account_channel_request_new (account, priv->request,
 846       priv->user_action_time);
 847
 848   tp_account_channel_request_create_and_handle_channel_async (req, NULL,
 849       ft_handler_create_channel_cb, handler);
 850
 851   g_object_unref (req);
 852 }
 853
 854 static void
 855 ft_handler_populate_outgoing_request (EmpathyFTHandler *handler)
 856 {
 857   guint contact_handle;
 858   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
 859   gchar *uri;
 860
 861   contact_handle = empathy_contact_get_handle (priv->contact);
 862   uri = g_file_get_uri (priv->gfile);
 863
 864   priv->request = tp_asv_new (
 865       TP_PROP_CHANNEL_CHANNEL_TYPE, G_TYPE_STRING,
 866         TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER,
 867       TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, G_TYPE_UINT,
 868         TP_HANDLE_TYPE_CONTACT,
 869       TP_PROP_CHANNEL_TARGET_HANDLE, G_TYPE_UINT,
 870         contact_handle,
 871       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_TYPE, G_TYPE_STRING,
 872         priv->content_type,
 873       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_FILENAME, G_TYPE_STRING,
 874         priv->filename,
 875       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_SIZE, G_TYPE_UINT64,
 876         priv->total_bytes,
 877       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_DATE, G_TYPE_UINT64,
 878         priv->mtime,
 879       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_URI, G_TYPE_STRING, uri,
 880       NULL);
 881
 882   g_free (uri);
 883 }
 884
 885 static gboolean
 886 hash_job_done (gpointer user_data)
 887 {
 888   HashingData *hash_data = user_data;
 889   EmpathyFTHandler *handler = hash_data->handler;
 890   EmpathyFTHandlerPriv *priv;
 891   GError *error = NULL;
 892
 893   DEBUG ("Closing stream after hashing.");
 894
 895   priv = GET_PRIV (handler);
 896
 897   if (hash_data->error != NULL)
 898     {
 899       error = hash_data->error;
 900       hash_data->error = NULL;
 901       goto cleanup;
 902     }
 903
 904   DEBUG ("Got file hash %s", g_checksum_get_string (hash_data->checksum));
 905
 906   if (empathy_ft_handler_is_incoming (handler))
 907     {
 908       if (g_strcmp0 (g_checksum_get_string (hash_data->checksum),
 909                      priv->content_hash))
 910         {
 911           DEBUG ("Hash mismatch when checking incoming handler: "
 912                  "received %s, calculated %s", priv->content_hash,
 913                  g_checksum_get_string (hash_data->checksum));
 914
 915           error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
 916               EMPATHY_FT_ERROR_HASH_MISMATCH,
 917               _("File transfer completed, but the file was corrupted"));
 918           goto cleanup;
 919         }
 920       else
 921         {
 922           DEBUG ("Hash verification matched, received %s, calculated %s",
 923                  priv->content_hash,
 924                  g_checksum_get_string (hash_data->checksum));
 925         }
 926     }
 927   else
 928     {
 929       /* set the checksum in the request...
 930        * org.freedesktop.Telepathy.Channel.Type.FileTransfer.ContentHash
 931        */
 932       tp_asv_set_string (priv->request,
 933           TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH,
 934           g_checksum_get_string (hash_data->checksum));
 935     }
 936
 937 cleanup:
 938
 939   if (error != NULL)
 940     {
 941       emit_error_signal (handler, error);
 942       g_clear_error (&error);
 943     }
 944   else
 945     {
 946       g_signal_emit (handler, signals[HASHING_DONE], 0);
 947
 948       if (!empathy_ft_handler_is_incoming (handler))
 949         /* the request is complete now, push it to the dispatcher */
 950         ft_handler_push_to_dispatcher (handler);
 951     }
 952
 953   hash_data_free (hash_data);
 954
 955   return FALSE;
 956 }
 957
 958 static gboolean
 959 emit_hashing_progress (gpointer user_data)
 960 {
 961   HashingData *hash_data = user_data;
 962
 963   g_signal_emit (hash_data->handler, signals[HASHING_PROGRESS], 0,
 964       (guint64) hash_data->total_read, (guint64) hash_data->total_bytes);
 965
 966   return FALSE;
 967 }
 968
 969 static gboolean
 970 do_hash_job (GIOSchedulerJob *job,
 971     GCancellable *cancellable,
 972     gpointer user_data)
 973 {
 974   HashingData *hash_data = user_data;
 975   gssize bytes_read;
 976   GError *error = NULL;
 977
 978 again:
 979   if (hash_data->buffer == NULL)
 980     hash_data->buffer = g_malloc0 (BUFFER_SIZE);
 981
 982   bytes_read = g_input_stream_read (hash_data->stream, hash_data->buffer,
 983                                     BUFFER_SIZE, cancellable, &error);
 984   if (error != NULL)
 985     goto out;
 986
 987   hash_data->total_read += bytes_read;
 988
 989   /* we now have the chunk */
 990   if (bytes_read > 0)
 991     {
 992       g_checksum_update (hash_data->checksum, hash_data->buffer, bytes_read);
 993       g_io_scheduler_job_send_to_mainloop_async (job, emit_hashing_progress,
 994           hash_data, NULL);
 995
 996       g_free (hash_data->buffer);
 997       hash_data->buffer = NULL;
 998
 999       goto again;
1000     }
1001   else
1002   {
1003     g_input_stream_close (hash_data->stream, cancellable, &error);
1004   }
1005
1006 out:
1007   if (error != NULL)
1008     hash_data->error = error;
1009
1010   g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
1011       hash_data, NULL);
1012
1013   return FALSE;
1014 }
1015
1016 static gboolean
1017 do_hash_job_incoming (GIOSchedulerJob *job,
1018     GCancellable *cancellable,
1019     gpointer user_data)
1020 {
1021   HashingData *hash_data = user_data;
1022   EmpathyFTHandler *handler = hash_data->handler;
1023   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1024   GError *error = NULL;
1025
1026   DEBUG ("checking integrity for incoming handler");
1027
1028   /* need to get the stream first */
1029   hash_data->stream =
1030     G_INPUT_STREAM (g_file_read (priv->gfile, cancellable, &error));
1031
1032   if (error != NULL)
1033     {
1034       hash_data->error = error;
1035       g_io_scheduler_job_send_to_mainloop_async (job, hash_job_done,
1036           hash_data, NULL);
1037       return FALSE;
1038     }
1039
1040   return do_hash_job (job, cancellable, user_data);
1041 }
1042
1043 static void
1044 ft_handler_read_async_cb (GObject *source,
1045     GAsyncResult *res,
1046     gpointer user_data)
1047 {
1048   GFileInputStream *stream;
1049   GError *error = NULL;
1050   HashingData *hash_data;
1051   EmpathyFTHandler *handler = user_data;
1052   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1053
1054   DEBUG ("GFile read async CB.");
1055
1056   stream = g_file_read_finish (priv->gfile, res, &error);
1057   if (error != NULL)
1058     {
1059       emit_error_signal (handler, error);
1060       g_clear_error (&error);
1061
1062       return;
1063     }
1064
1065   hash_data = g_slice_new0 (HashingData);
1066   hash_data->stream = G_INPUT_STREAM (stream);
1067   hash_data->total_bytes = priv->total_bytes;
1068   hash_data->handler = g_object_ref (handler);
1069   /* FIXME: MD5 is the only ContentHashType supported right now */
1070   hash_data->checksum = g_checksum_new (G_CHECKSUM_MD5);
1071
1072   tp_asv_set_uint32 (priv->request,
1073       TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH_TYPE,
1074       TP_FILE_HASH_TYPE_MD5);
1075
1076   g_signal_emit (handler, signals[HASHING_STARTED], 0);
1077
1078   g_io_scheduler_push_job (do_hash_job, hash_data, NULL,
1079       G_PRIORITY_DEFAULT, priv->cancellable);
1080 }
1081
1082 static void
1083 callbacks_data_free (gpointer user_data)
1084 {
1085   CallbacksData *data = user_data;
1086
1087   if (data->handler != NULL)
1088     g_object_unref (data->handler);
1089
1090   g_slice_free (CallbacksData, data);
1091 }
1092
1093 static gboolean
1094 set_content_hash_type_from_classes (EmpathyFTHandler *handler,
1095     GPtrArray *classes)
1096 {
1097   GArray *possible_values;
1098   guint value;
1099   gboolean valid;
1100   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1101   gboolean support_ft = FALSE;
1102   guint i;
1103
1104   possible_values = g_array_new (TRUE, TRUE, sizeof (guint));
1105
1106   for (i = 0; i < classes->len; i++)
1107     {
1108       GHashTable *fixed;
1109       GStrv allowed;
1110       const gchar *chan_type;
1111
1112       tp_value_array_unpack (g_ptr_array_index (classes, i), 2,
1113           &fixed, &allowed);
1114
1115       chan_type = tp_asv_get_string (fixed, TP_PROP_CHANNEL_CHANNEL_TYPE);
1116
1117       if (tp_strdiff (chan_type, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER))
1118         continue;
1119
1120       if (tp_asv_get_uint32 (fixed, TP_PROP_CHANNEL_TARGET_HANDLE_TYPE, NULL) !=
1121           TP_HANDLE_TYPE_CONTACT)
1122         continue;
1123
1124       support_ft = TRUE;
1125
1126       value = tp_asv_get_uint32
1127         (fixed, TP_PROP_CHANNEL_TYPE_FILE_TRANSFER_CONTENT_HASH_TYPE,
1128          &valid);
1129
1130       if (valid)
1131         g_array_append_val (possible_values, value);
1132     }
1133
1134   if (!support_ft)
1135     {
1136       g_array_unref (possible_values);
1137       return FALSE;
1138     }
1139
1140   if (possible_values->len == 0)
1141     {
1142       /* there are no channel classes with hash support, disable it. */
1143       priv->use_hash = FALSE;
1144       priv->content_hash_type = TP_FILE_HASH_TYPE_NONE;
1145
1146       goto out;
1147     }
1148
1149   priv->use_hash = TRUE;
1150
1151   if (possible_values->len == 1)
1152     {
1153       priv->content_hash_type = g_array_index (possible_values, guint, 0);
1154     }
1155   else
1156     {
1157       /* order the array and pick the first non zero, so that MD5
1158        * is the preferred value.
1159        */
1160       g_array_sort (possible_values, empathy_uint_compare);
1161
1162       if (g_array_index (possible_values, guint, 0) == 0)
1163         priv->content_hash_type = g_array_index (possible_values, guint, 1);
1164       else
1165         priv->content_hash_type = g_array_index (possible_values, guint, 0);
1166     }
1167
1168 out:
1169   g_array_unref (possible_values);
1170
1171   DEBUG ("Hash enabled %s; setting content hash type as %u",
1172          priv->use_hash ? "True" : "False", priv->content_hash_type);
1173
1174   return TRUE;
1175 }
1176
1177 static void
1178 check_hashing (CallbacksData *data)
1179 {
1180   EmpathyFTHandler *handler = data->handler;
1181   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1182   GError *myerr = NULL;
1183   TpCapabilities *caps;
1184   GPtrArray *classes;
1185   TpConnection *conn;
1186
1187   conn = empathy_contact_get_connection (priv->contact);
1188
1189   caps = tp_connection_get_capabilities (conn);
1190   if (caps == NULL)
1191     {
1192       data->callback (handler, NULL, data->user_data);
1193       goto out;
1194     }
1195
1196   classes = tp_capabilities_get_channel_classes (caps);
1197
1198   /* set whether we support hash and the type of it */
1199   if (!set_content_hash_type_from_classes (handler, classes))
1200     {
1201       g_set_error_literal (&myerr, EMPATHY_FT_ERROR_QUARK,
1202           EMPATHY_FT_ERROR_NOT_SUPPORTED,
1203           _("File transfer not supported by remote contact"));
1204
1205       if (!g_cancellable_is_cancelled (priv->cancellable))
1206         g_cancellable_cancel (priv->cancellable);
1207
1208       data->callback (handler, myerr, data->user_data);
1209       g_clear_error (&myerr);
1210     }
1211   else
1212     {
1213       /* get back to the caller now */
1214       data->callback (handler, NULL, data->user_data);
1215     }
1216
1217 out:
1218   callbacks_data_free (data);
1219 }
1220
1221 static void
1222 ft_handler_complete_request (EmpathyFTHandler *handler)
1223 {
1224   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1225
1226   /* populate the request table with all the known properties */
1227   ft_handler_populate_outgoing_request (handler);
1228
1229   if (priv->use_hash)
1230     /* start hashing the file */
1231     g_file_read_async (priv->gfile, G_PRIORITY_DEFAULT,
1232         priv->cancellable, ft_handler_read_async_cb, handler);
1233   else
1234     /* push directly the handler to the dispatcher */
1235     ft_handler_push_to_dispatcher (handler);
1236 }
1237
1238 static void
1239 ft_handler_gfile_ready_cb (GObject *source,
1240     GAsyncResult *res,
1241     CallbacksData *cb_data)
1242 {
1243   GFileInfo *info;
1244   GError *error = NULL;
1245   GTimeVal mtime;
1246   EmpathyFTHandlerPriv *priv = GET_PRIV (cb_data->handler);
1247
1248   DEBUG ("Got GFileInfo.");
1249
1250   info = g_file_query_info_finish (priv->gfile, res, &error);
1251
1252   if (error != NULL)
1253     goto out;
1254
1255   if (g_file_info_get_file_type (info) != G_FILE_TYPE_REGULAR)
1256     {
1257       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
1258           EMPATHY_FT_ERROR_INVALID_SOURCE_FILE,
1259           _("The selected file is not a regular file"));
1260       goto out;
1261     }
1262
1263   priv->total_bytes = g_file_info_get_size (info);
1264   if (priv->total_bytes == 0)
1265     {
1266       error = g_error_new_literal (EMPATHY_FT_ERROR_QUARK,
1267           EMPATHY_FT_ERROR_EMPTY_SOURCE_FILE,
1268           _("The selected file is empty"));
1269       goto out;
1270     }
1271
1272   priv->content_type = g_strdup (g_file_info_get_content_type (info));
1273   priv->filename = g_strdup (g_file_info_get_display_name (info));
1274   g_file_info_get_modification_time (info, &mtime);
1275   priv->mtime = mtime.tv_sec;
1276   priv->transferred_bytes = 0;
1277   priv->description = NULL;
1278
1279   g_object_unref (info);
1280
1281 out:
1282   if (error != NULL)
1283     {
1284       if (!g_cancellable_is_cancelled (priv->cancellable))
1285         g_cancellable_cancel (priv->cancellable);
1286
1287       cb_data->callback (cb_data->handler, error, cb_data->user_data);
1288       g_error_free (error);
1289
1290       callbacks_data_free (cb_data);
1291     }
1292   else
1293     {
1294       /* see if FT/hashing are allowed */
1295       check_hashing (cb_data);
1296     }
1297 }
1298
1299 static void
1300 contact_factory_contact_cb (TpConnection *connection,
1301     EmpathyContact *contact,
1302     const GError *error,
1303     gpointer user_data,
1304     GObject *weak_object)
1305 {
1306   CallbacksData *cb_data = user_data;
1307   EmpathyFTHandler *handler = EMPATHY_FT_HANDLER (weak_object);
1308   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1309
1310   if (error != NULL)
1311     {
1312       if (!g_cancellable_is_cancelled (priv->cancellable))
1313         g_cancellable_cancel (priv->cancellable);
1314
1315       cb_data->callback (handler, (GError *) error, cb_data->user_data);
1316       callbacks_data_free (cb_data);
1317       return;
1318     }
1319
1320   priv->contact = g_object_ref (contact);
1321
1322   cb_data->callback (handler, NULL, cb_data->user_data);
1323 }
1324
1325 static void
1326 channel_get_all_properties_cb (TpProxy *proxy,
1327     GHashTable *properties,
1328     const GError *error,
1329     gpointer user_data,
1330     GObject *weak_object)
1331 {
1332   CallbacksData *cb_data = user_data;
1333   EmpathyFTHandler *handler = EMPATHY_FT_HANDLER (weak_object);
1334   EmpathyFTHandlerPriv *priv = GET_PRIV (handler);
1335   TpHandle c_handle;
1336
1337   if (error != NULL)
1338     {
1339       if (!g_cancellable_is_cancelled (priv->cancellable))
1340         g_cancellable_cancel (priv->cancellable);
1341
1342       cb_data->callback (handler, (GError *) error, cb_data->user_data);
1343
1344       callbacks_data_free (cb_data);
1345       return;
1346     }
1347
1348   priv->content_hash = g_value_dup_string (
1349       g_hash_table_lookup (properties, "ContentHash"));
1350
1351   priv->content_hash_type = g_value_get_uint (
1352       g_hash_table_lookup (properties, "ContentHashType"));
1353
1354   c_handle = tp_channel_get_handle (TP_CHANNEL (proxy), NULL);
1355   empathy_tp_contact_factory_get_from_handle (
1356       tp_channel_borrow_connection (TP_CHANNEL (proxy)), c_handle,
1357       contact_factory_contact_cb, cb_data, callbacks_data_free,
1358       G_OBJECT (handler));
1359 }
1360
1361 /* public methods */
1362
1363 /**
1364  * empathy_ft_handler_new_outgoing:
1365  * @contact: the #EmpathyContact to send @source to
1366  * @source: the #GFile to send
1367  * @callback: callback to be called when the handler has been created
1368  * @user_data: user data to be passed to @callback
1369  *
1370  * Triggers the creation of a new #EmpathyFTHandler for an outgoing transfer.
1371  */
1372 void
1373 empathy_ft_handler_new_outgoing (EmpathyContact *contact,
1374     GFile *source,
1375     gint64 action_time,
1376     EmpathyFTHandlerReadyCallback callback,
1377     gpointer user_data)
1378 {
1379   EmpathyFTHandler *handler;
1380   CallbacksData *data;
1381   EmpathyFTHandlerPriv *priv;
1382
1383   DEBUG ("New handler outgoing");
1384
1385   g_return_if_fail (EMPATHY_IS_CONTACT (contact));
1386   g_return_if_fail (G_IS_FILE (source));
1387
1388   handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
1389       "contact", contact,
1390       "gfile", source,
1391       "user-action-time", action_time,
1392       NULL);
1393
1394   priv = GET_PRIV (handler);
1395
1396   data = g_slice_new0 (CallbacksData);
1397   data->callback = callback;
1398   data->user_data = user_data;
1399   data->handler = g_object_ref (handler);
1400
1401   /* start collecting info about the file */
1402   g_file_query_info_async (priv->gfile,
1403       G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME ","
1404       G_FILE_ATTRIBUTE_STANDARD_SIZE ","
1405       G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
1406       G_FILE_ATTRIBUTE_STANDARD_TYPE ","
1407       G_FILE_ATTRIBUTE_TIME_MODIFIED,
1408       G_FILE_QUERY_INFO_NONE, G_PRIORITY_DEFAULT,
1409       NULL, (GAsyncReadyCallback) ft_handler_gfile_ready_cb, data);
1410 }
1411
1412 /**
1413  * empathy_ft_handler_new_incoming:
1414  * @channel: the #TpFileTransferChannel proxy to the incoming channel
1415  * @callback: callback to be called when the handler has been created
1416  * @user_data: user data to be passed to @callback
1417  *
1418  * Triggers the creation of a new #EmpathyFTHandler for an incoming transfer.
1419  * Note that for the handler to be useful, you will have to set a destination
1420  * file with empathy_ft_handler_incoming_set_destination() after the handler
1421  * is ready.
1422  */
1423 void
1424 empathy_ft_handler_new_incoming (TpFileTransferChannel *channel,
1425     EmpathyFTHandlerReadyCallback callback,
1426     gpointer user_data)
1427 {
1428   EmpathyFTHandler *handler;
1429   CallbacksData *data;
1430   EmpathyFTHandlerPriv *priv;
1431
1432   g_return_if_fail (TP_IS_FILE_TRANSFER_CHANNEL (channel));
1433
1434   handler = g_object_new (EMPATHY_TYPE_FT_HANDLER,
1435       "channel", channel, NULL);
1436
1437   priv = GET_PRIV (handler);
1438
1439   data = g_slice_new0 (CallbacksData);
1440   data->callback = callback;
1441   data->user_data = user_data;
1442   data->handler = g_object_ref (handler);
1443
1444   priv->total_bytes = tp_file_transfer_channel_get_size (channel);
1445
1446   priv->transferred_bytes = tp_file_transfer_channel_get_transferred_bytes (
1447       channel);
1448
1449   priv->filename = g_strdup (tp_file_transfer_channel_get_filename (channel));
1450
1451   priv->content_type = g_strdup (tp_file_transfer_channel_get_mime_type (
1452       channel));
1453
1454   priv->description = g_strdup (tp_file_transfer_channel_get_description (
1455       channel));
1456
1457   tp_cli_dbus_properties_call_get_all (channel,
1458       -1, TP_IFACE_CHANNEL_TYPE_FILE_TRANSFER,
1459       channel_get_all_properties_cb, data, NULL, G_OBJECT (handler));
1460 }
1461
1462 /**
1463  * empathy_ft_handler_start_transfer:
1464  * @handler: an #EmpathyFTHandler
1465  *
1466  * Starts the transfer machinery. After this call, the transfer and hashing
1467  * signals will be emitted by the handler.
1468  */
1469 void
1470 empathy_ft_handler_start_transfer (EmpathyFTHandler *handler)
1471 {
1472   EmpathyFTHandlerPriv *priv;
1473
1474   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1475
1476   priv = GET_PRIV (handler);
1477
1478   if (priv->channel == NULL)
1479     {
1480       ft_handler_complete_request (handler);
1481     }
1482   else
1483     {
1484       /* TODO: add support for resume. */
1485       tp_file_transfer_channel_accept_file_async (priv->channel,
1486           priv->gfile, 0, ft_transfer_accept_cb, handler);
1487
1488       tp_g_signal_connect_object (priv->channel, "notify::state",
1489           G_CALLBACK (ft_transfer_state_cb), handler, 0);
1490       tp_g_signal_connect_object (priv->channel, "notify::transferred-bytes",
1491           G_CALLBACK (ft_transfer_transferred_bytes_cb), handler, 0);
1492     }
1493 }
1494
1495 /**
1496  * empathy_ft_handler_cancel_transfer:
1497  * @handler: an #EmpathyFTHandler
1498  *
1499  * Cancels an ongoing handler operation. Note that this doesn't destroy
1500  * the object, which will keep all the properties, altough it won't be able
1501  * to do any more I/O.
1502  */
1503 void
1504 empathy_ft_handler_cancel_transfer (EmpathyFTHandler *handler)
1505 {
1506   EmpathyFTHandlerPriv *priv;
1507
1508   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1509
1510   priv = GET_PRIV (handler);
1511
1512   /* if we don't have a channel, we are hashing, so
1513    * we can just cancel the GCancellable to stop it.
1514    */
1515   if (priv->channel == NULL)
1516     g_cancellable_cancel (priv->cancellable);
1517   else
1518     tp_channel_close_async (TP_CHANNEL (priv->channel), NULL, NULL);
1519 }
1520
1521 /**
1522  * empathy_ft_handler_incoming_set_destination:
1523  * @handler: an #EmpathyFTHandler
1524  * @destination: the #GFile where the transfer should be saved
1525  *
1526  * Sets the destination of the incoming handler to be @destination.
1527  * Note that calling this method is mandatory before starting the transfer
1528  * for incoming handlers.
1529  */
1530 void
1531 empathy_ft_handler_incoming_set_destination (EmpathyFTHandler *handler,
1532     GFile *destination)
1533 {
1534   EmpathyFTHandlerPriv *priv;
1535
1536   g_return_if_fail (EMPATHY_IS_FT_HANDLER (handler));
1537   g_return_if_fail (G_IS_FILE (destination));
1538
1539   priv = GET_PRIV (handler);
1540
1541   g_object_set (handler, "gfile", destination, NULL);
1542
1543   /* check if hash is supported. if it isn't, set use_hash to FALSE
1544    * anyway, so that clients won't be expecting us to checksum.
1545    */
1546   if (EMP_STR_EMPTY (priv->content_hash) ||
1547       priv->content_hash_type == TP_FILE_HASH_TYPE_NONE)
1548     priv->use_hash = FALSE;
1549   else
1550     priv->use_hash = TRUE;
1551 }
1552
1553 /**
1554  * empathy_ft_handler_get_filename:
1555  * @handler: an #EmpathyFTHandler
1556  *
1557  * Returns the name of the file being transferred.
1558  *
1559  * Return value: the name of the file being transferred
1560  */
1561 const char *
1562 empathy_ft_handler_get_filename (EmpathyFTHandler *handler)
1563 {
1564   EmpathyFTHandlerPriv *priv;
1565
1566   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1567
1568   priv = GET_PRIV (handler);
1569
1570   return priv->filename;
1571 }
1572
1573 /**
1574  * empathy_ft_handler_get_content_type:
1575  * @handler: an #EmpathyFTHandler
1576  *
1577  * Returns the content type of the file being transferred.
1578  *
1579  * Return value: the content type of the file being transferred
1580  */
1581 const char *
1582 empathy_ft_handler_get_content_type (EmpathyFTHandler *handler)
1583 {
1584   EmpathyFTHandlerPriv *priv;
1585
1586   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1587
1588   priv = GET_PRIV (handler);
1589
1590   return priv->content_type;
1591 }
1592
1593 /**
1594  * empathy_ft_handler_get_contact:
1595  * @handler: an #EmpathyFTHandler
1596  *
1597  * Returns the remote #EmpathyContact at the other side of the transfer.
1598  *
1599  * Return value: the remote #EmpathyContact for @handler
1600  */
1601 EmpathyContact *
1602 empathy_ft_handler_get_contact (EmpathyFTHandler *handler)
1603 {
1604   EmpathyFTHandlerPriv *priv;
1605
1606   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1607
1608   priv = GET_PRIV (handler);
1609
1610   return priv->contact;
1611 }
1612
1613 /**
1614  * empathy_ft_handler_get_gfile:
1615  * @handler: an #EmpathyFTHandler
1616  *
1617  * Returns the #GFile where the transfer is being read/saved.
1618  *
1619  * Return value: the #GFile where the transfer is being read/saved
1620  */
1621 GFile *
1622 empathy_ft_handler_get_gfile (EmpathyFTHandler *handler)
1623 {
1624   EmpathyFTHandlerPriv *priv;
1625
1626   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), NULL);
1627
1628   priv = GET_PRIV (handler);
1629
1630   return priv->gfile;
1631 }
1632
1633 /**
1634  * empathy_ft_handler_get_use_hash:
1635  * @handler: an #EmpathyFTHandler
1636  *
1637  * Returns whether @handler has checksumming enabled. This can depend on
1638  * the CM and the remote contact capabilities.
1639  *
1640  * Return value: %TRUE if the handler has checksumming enabled,
1641  * %FALSE otherwise.
1642  */
1643 gboolean
1644 empathy_ft_handler_get_use_hash (EmpathyFTHandler *handler)
1645 {
1646   EmpathyFTHandlerPriv *priv;
1647
1648   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1649
1650   priv = GET_PRIV (handler);
1651
1652   return priv->use_hash;
1653 }
1654
1655 /**
1656  * empathy_ft_handler_is_incoming:
1657  * @handler: an #EmpathyFTHandler
1658  *
1659  * Returns whether @handler is incoming or outgoing.
1660  *
1661  * Return value: %TRUE if the handler is incoming, %FALSE otherwise.
1662  */
1663 gboolean
1664 empathy_ft_handler_is_incoming (EmpathyFTHandler *handler)
1665 {
1666   EmpathyFTHandlerPriv *priv;
1667
1668   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1669
1670   priv = GET_PRIV (handler);
1671
1672   if (priv->channel == NULL)
1673     return FALSE;
1674
1675   return !tp_channel_get_requested ((TpChannel *) priv->channel);
1676 }
1677
1678 /**
1679  * empathy_ft_handler_get_transferred_bytes:
1680  * @handler: an #EmpathyFTHandler
1681  *
1682  * Returns the number of bytes already transferred by the handler.
1683  *
1684  * Return value: the number of bytes already transferred by the handler.
1685  */
1686 guint64
1687 empathy_ft_handler_get_transferred_bytes (EmpathyFTHandler *handler)
1688 {
1689   EmpathyFTHandlerPriv *priv;
1690
1691   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
1692
1693   priv = GET_PRIV (handler);
1694
1695   return priv->transferred_bytes;
1696 }
1697
1698 /**
1699  * empathy_ft_handler_get_total_bytes:
1700  * @handler: an #EmpathyFTHandler
1701  *
1702  * Returns the total size of the file being transferred by the handler.
1703  *
1704  * Return value: a number of bytes indicating the total size of the file being
1705  * transferred by the handler.
1706  */
1707 guint64
1708 empathy_ft_handler_get_total_bytes (EmpathyFTHandler *handler)
1709 {
1710   EmpathyFTHandlerPriv *priv;
1711
1712   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), 0);
1713
1714   priv = GET_PRIV (handler);
1715
1716   return priv->total_bytes;
1717 }
1718
1719 /**
1720  * empathy_ft_handler_is_completed:
1721  * @handler: an #EmpathyFTHandler
1722  *
1723  * Returns whether the transfer for @handler has been completed succesfully.
1724  *
1725  * Return value: %TRUE if the handler has been transferred correctly, %FALSE
1726  * otherwise
1727  */
1728 gboolean
1729 empathy_ft_handler_is_completed (EmpathyFTHandler *handler)
1730 {
1731   EmpathyFTHandlerPriv *priv;
1732
1733   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1734
1735   priv = GET_PRIV (handler);
1736
1737   return priv->is_completed;
1738 }
1739
1740 /**
1741  * empathy_ft_handler_is_cancelled:
1742  * @handler: an #EmpathyFTHandler
1743  *
1744  * Returns whether the transfer for @handler has been cancelled or has stopped
1745  * due to an error.
1746  *
1747  * Return value: %TRUE if the transfer for @handler has been cancelled
1748  * or has stopped due to an error, %FALSE otherwise.
1749  */
1750 gboolean
1751 empathy_ft_handler_is_cancelled (EmpathyFTHandler *handler)
1752 {
1753   EmpathyFTHandlerPriv *priv;
1754
1755   g_return_val_if_fail (EMPATHY_IS_FT_HANDLER (handler), FALSE);
1756
1757   priv = GET_PRIV (handler);
1758
1759   return g_cancellable_is_cancelled (priv->cancellable);
1760 }