gio/gsocketlistener.c

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright © 2008 Christian Kellner, Samuel Cormier-Iijima
   4  * Copyright © 2009 codethink
   5  * Copyright © 2009 Red Hat, Inc
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General
  18  * Public License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  *
  22  * Authors: Christian Kellner <gicmo@gnome.org>
  23  *          Samuel Cormier-Iijima <sciyoshi@gmail.com>
  24  *          Ryan Lortie <desrt@desrt.ca>
  25  *          Alexander Larsson <alexl@redhat.com>
  26  */
  27
  28 #include "config.h"
  29 #include "gsocketlistener.h"
  30
  31 #include <gio/gsimpleasyncresult.h>
  32 #include <gio/gcancellable.h>
  33 #include <gio/gsocketaddress.h>
  34 #include <gio/ginetaddress.h>
  35 #include <gio/gioerror.h>
  36 #include <gio/gsocket.h>
  37 #include <gio/gsocketconnection.h>
  38 #include <gio/ginetsocketaddress.h>
  39 #include "glibintl.h"
  40
  41 #include "gioalias.h"
  42
  43 /**
  44  * SECTION: gsocketlistener
  45  * @title: GSocketListener
  46  * @short_description: Helper for accepting network client connections
  47  * @see_also: #GThreadedSocketService, #GSocketService.
  48  *
  49  * A #GSocketListener is an object that keeps track of a set
  50  * of server sockets and helps you accept sockets from any of the
  51  * socket, either sync or async.
  52  *
  53  * If you want to implement a network server, also look at #GSocketService
  54  * and #GThreadedSocketService which are subclass of #GSocketListener
  55  * that makes this even easier.
  56  *
  57  * Since: 2.22
  58  */
  59
  60 G_DEFINE_TYPE (GSocketListener, g_socket_listener, G_TYPE_OBJECT);
  61
  62 enum
  63 {
  64   PROP_0,
  65   PROP_LISTEN_BACKLOG
  66 };
  67
  68
  69 static GQuark source_quark = 0;
  70
  71 struct _GSocketListenerPrivate
  72 {
  73   GPtrArray           *sockets;
  74   GMainContext        *main_context;
  75   int                 listen_backlog;
  76   guint               closed : 1;
  77 };
  78
  79 static void
  80 g_socket_listener_finalize (GObject *object)
  81 {
  82   GSocketListener *listener = G_SOCKET_LISTENER (object);
  83
  84   if (listener->priv->main_context)
  85     g_main_context_unref (listener->priv->main_context);
  86
  87   if (!listener->priv->closed)
  88     g_socket_listener_close (listener);
  89
  90   g_ptr_array_free (listener->priv->sockets, TRUE);
  91
  92   G_OBJECT_CLASS (g_socket_listener_parent_class)
  93     ->finalize (object);
  94 }
  95
  96 static void
  97 g_socket_listener_get_property (GObject    *object,
  98                                 guint       prop_id,
  99                                 GValue     *value,
 100                                 GParamSpec *pspec)
 101 {
 102   GSocketListener *listener = G_SOCKET_LISTENER (object);
 103
 104   switch (prop_id)
 105     {
 106       case PROP_LISTEN_BACKLOG:
 107         g_value_set_int (value, listener->priv->listen_backlog);
 108         break;
 109
 110       default:
 111         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 112     }
 113 }
 114
 115 static void
 116 g_socket_listener_set_property (GObject      *object,
 117                                 guint         prop_id,
 118                                 const GValue *value,
 119                                 GParamSpec   *pspec)
 120 {
 121   GSocketListener *listener = G_SOCKET_LISTENER (object);
 122
 123   switch (prop_id)
 124     {
 125       case PROP_LISTEN_BACKLOG:
 126         g_socket_listener_set_backlog (listener, g_value_get_int (value));
 127         break;
 128
 129       default:
 130         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 131     }
 132 }
 133
 134
 135 static void
 136 g_socket_listener_class_init (GSocketListenerClass *klass)
 137 {
 138   GObjectClass *gobject_class G_GNUC_UNUSED = G_OBJECT_CLASS (klass);
 139
 140   g_type_class_add_private (klass, sizeof (GSocketListenerPrivate));
 141
 142   gobject_class->finalize = g_socket_listener_finalize;
 143   gobject_class->set_property = g_socket_listener_set_property;
 144   gobject_class->get_property = g_socket_listener_get_property;
 145   g_object_class_install_property (gobject_class, PROP_LISTEN_BACKLOG,
 146                                    g_param_spec_int ("listen-backlog",
 147                                                      P_("Listen backlog"),
 148                                                      P_("outstanding connections in the listen queue"),
 149                                                      0,
 150                                                      2000,
 151                                                      10,
 152                                                      G_PARAM_CONSTRUCT | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 153
 154   source_quark = g_quark_from_static_string ("g-socket-listener-source");
 155 }
 156
 157 static void
 158 g_socket_listener_init (GSocketListener *listener)
 159 {
 160   listener->priv = G_TYPE_INSTANCE_GET_PRIVATE (listener,
 161                                                 G_TYPE_SOCKET_LISTENER,
 162                                                 GSocketListenerPrivate);
 163   listener->priv->sockets =
 164     g_ptr_array_new_with_free_func ((GDestroyNotify) g_object_unref);
 165   listener->priv->listen_backlog = 10;
 166 }
 167
 168 /**
 169  * g_socket_listener_new:
 170  *
 171  * Creates a new #GSocketListener with no sockets to listen for.
 172  * New listeners can be added with e.g. g_socket_listener_add_address()
 173  * or g_socket_listener_add_inet_port().
 174  *
 175  * Returns: a new #GSocketListener.
 176  *
 177  * Since: 2.22
 178  */
 179 GSocketListener *
 180 g_socket_listener_new (void)
 181 {
 182   return g_object_new (G_TYPE_SOCKET_LISTENER, NULL);
 183 }
 184
 185 static gboolean
 186 check_listener (GSocketListener *listener,
 187                 GError **error)
 188 {
 189   if (listener->priv->closed)
 190     {
 191       g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_CLOSED,
 192                            _("Listener is already closed"));
 193       return FALSE;
 194     }
 195
 196   return TRUE;
 197 }
 198
 199 /**
 200  * g_socket_listener_add_socket:
 201  * @listener: a #GSocketListener
 202  * @socket: a listening #GSocket
 203  * @source_object: Optional #GObject identifying this source
 204  * @error: #GError for error reporting, or %NULL to ignore.
 205  *
 206  * Adds @socket to the set of sockets that we try to accept
 207  * new clients from. The socket must be bound to a local
 208  * address and listened to.
 209  *
 210  * @source_object will be passed out in the various calls
 211  * to accept to identify this particular source, which is
 212  * useful if you're listening on multiple addresses and do
 213  * different things depending on what address is connected to.
 214  *
 215  * Returns: %TRUE on success, %FALSE on error.
 216  *
 217  * Since: 2.22
 218  */
 219 gboolean
 220 g_socket_listener_add_socket (GSocketListener  *listener,
 221                               GSocket          *socket,
 222                               GObject          *source_object,
 223                               GError          **error)
 224 {
 225   if (!check_listener (listener, error))
 226     return FALSE;
 227
 228   /* TODO: Check that socket it is bound & not closed? */
 229
 230   if (g_socket_is_closed (socket))
 231     {
 232       g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
 233                            _("Added socket is closed"));
 234       return FALSE;
 235     }
 236
 237   g_object_ref (socket);
 238   g_ptr_array_add (listener->priv->sockets, socket);
 239
 240   if (source_object)
 241     g_object_set_qdata_full (G_OBJECT (socket), source_quark,
 242                              g_object_ref (source_object), g_object_unref);
 243
 244
 245   if (G_SOCKET_LISTENER_GET_CLASS (listener)->changed)
 246     G_SOCKET_LISTENER_GET_CLASS (listener)->changed (listener);
 247
 248   return TRUE;
 249 }
 250
 251 /**
 252  * g_socket_listener_add_address:
 253  * @listener: a #GSocketListener
 254  * @address: a #GSocketAddress
 255  * @type: a #GSocketType
 256  * @protocol: a #GSocketProtocol
 257  * @source_object: Optional #GObject identifying this source
 258  * @effective_address: location to store the address that was bound to, or %NULL.
 259  * @error: #GError for error reporting, or %NULL to ignore.
 260  *
 261  * Creates a socket of type @type and protocol @protocol, binds
 262  * it to @address and adds it to the set of sockets we're accepting
 263  * sockets from.
 264  *
 265  * Note that adding an IPv6 address, depending on the platform,
 266  * may or may not result in a listener that also accepts IPv4
 267  * connections.  For more determinstic behaviour, see
 268  * g_socket_listener_add_inet_port().
 269  *
 270  * @source_object will be passed out in the various calls
 271  * to accept to identify this particular source, which is
 272  * useful if you're listening on multiple addresses and do
 273  * different things depending on what address is connected to.
 274  *
 275  * If successful and @effective_address is non-%NULL then it will
 276  * be set to the address that the binding actually occured at.  This
 277  * is helpful for determining the port number that was used for when
 278  * requesting a binding to port 0 (ie: "any port").  This address, if
 279  * requested, belongs to the caller and must be freed.
 280  *
 281  * Returns: %TRUE on success, %FALSE on error.
 282  *
 283  * Since: 2.22
 284  */
 285 gboolean
 286 g_socket_listener_add_address (GSocketListener  *listener,
 287                                GSocketAddress   *address,
 288                                GSocketType       type,
 289                                GSocketProtocol   protocol,
 290                                GObject          *source_object,
 291                                GSocketAddress  **effective_address,
 292                                GError          **error)
 293 {
 294   GSocketAddress *local_address;
 295   GSocketFamily family;
 296   GSocket *socket;
 297
 298   if (!check_listener (listener, error))
 299     return FALSE;
 300
 301   family = g_socket_address_get_family (address);
 302   socket = g_socket_new (family, type, protocol, error);
 303   if (socket == NULL)
 304     return FALSE;
 305
 306   g_socket_set_listen_backlog (socket, listener->priv->listen_backlog);
 307
 308   if (!g_socket_bind (socket, address, TRUE, error) ||
 309       !g_socket_listen (socket, error))
 310     {
 311       g_object_unref (socket);
 312       return FALSE;
 313     }
 314
 315   local_address = NULL;
 316   if (effective_address)
 317     {
 318       local_address = g_socket_get_local_address (socket, error);
 319       if (local_address == NULL)
 320         {
 321           g_object_unref (socket);
 322           return FALSE;
 323         }
 324     }
 325
 326   if (!g_socket_listener_add_socket (listener, socket,
 327                                      source_object,
 328                                      error))
 329     {
 330       if (local_address)
 331         g_object_unref (local_address);
 332       g_object_unref (socket);
 333       return FALSE;
 334     }
 335
 336   if (effective_address)
 337     *effective_address = local_address;
 338
 339   g_object_unref (socket); /* add_socket refs this */
 340
 341   return TRUE;
 342 }
 343
 344 /**
 345  * g_socket_listener_add_inet_port:
 346  * @listener: a #GSocketListener
 347  * @port: an IP port number (non-zero)
 348  * @source_object: Optional #GObject identifying this source
 349  * @error: #GError for error reporting, or %NULL to ignore.
 350  *
 351  * Helper function for g_socket_listener_add_address() that
 352  * creates a TCP/IP socket listening on IPv4 and IPv6 (if
 353  * supported) on the specified port on all interfaces.
 354  *
 355  * @source_object will be passed out in the various calls
 356  * to accept to identify this particular source, which is
 357  * useful if you're listening on multiple addresses and do
 358  * different things depending on what address is connected to.
 359  *
 360  * Returns: %TRUE on success, %FALSE on error.
 361  *
 362  * Since: 2.22
 363  */
 364 gboolean
 365 g_socket_listener_add_inet_port (GSocketListener  *listener,
 366                                  guint16           port,
 367                                  GObject          *source_object,
 368                                  GError          **error)
 369 {
 370   gboolean need_ipv4_socket = TRUE;
 371   GSocket *socket4 = NULL;
 372   GSocket *socket6;
 373
 374   g_return_val_if_fail (listener != NULL, FALSE);
 375   g_return_val_if_fail (port != 0, FALSE);
 376
 377   if (!check_listener (listener, error))
 378     return FALSE;
 379
 380   /* first try to create an IPv6 socket */
 381   socket6 = g_socket_new (G_SOCKET_FAMILY_IPV6,
 382                           G_SOCKET_TYPE_STREAM,
 383                           G_SOCKET_PROTOCOL_DEFAULT,
 384                           NULL);
 385
 386   if (socket6 != NULL)
 387     /* IPv6 is supported on this platform, so if we fail now it is
 388      * a result of being unable to bind to our port.  Don't fail
 389      * silently as a result of this!
 390      */
 391     {
 392       GInetAddress *inet_address;
 393       GSocketAddress *address;
 394       gboolean result;
 395
 396       inet_address = g_inet_address_new_any (G_SOCKET_FAMILY_IPV6);
 397       address = g_inet_socket_address_new (inet_address, port);
 398       g_object_unref (inet_address);
 399
 400       g_socket_set_listen_backlog (socket6, listener->priv->listen_backlog);
 401
 402       result = g_socket_bind (socket6, address, TRUE, error) &&
 403                g_socket_listen (socket6, error);
 404
 405       g_object_unref (address);
 406
 407       if (!result)
 408         {
 409           g_object_unref (socket6);
 410
 411           return FALSE;
 412         }
 413
 414       if (source_object)
 415         g_object_set_qdata_full (G_OBJECT (socket6), source_quark,
 416                                  g_object_ref (source_object),
 417                                  g_object_unref);
 418
 419       /* If this socket already speaks IPv4 then we are done. */
 420       if (g_socket_speaks_ipv4 (socket6))
 421         need_ipv4_socket = FALSE;
 422     }
 423
 424   if (need_ipv4_socket)
 425     /* We are here for exactly one of the following reasons:
 426      *
 427      *   - our platform doesn't support IPv6
 428      *   - we successfully created an IPv6 socket but it's V6ONLY
 429      *
 430      * In either case, we need to go ahead and create an IPv4 socket
 431      * and fail the call if we can't bind to it.
 432      */
 433     {
 434       socket4 = g_socket_new (G_SOCKET_FAMILY_IPV4,
 435                               G_SOCKET_TYPE_STREAM,
 436                               G_SOCKET_PROTOCOL_DEFAULT,
 437                               error);
 438
 439       if (socket4 != NULL)
 440         /* IPv4 is supported on this platform, so if we fail now it is
 441          * a result of being unable to bind to our port.  Don't fail
 442          * silently as a result of this!
 443          */
 444         {
 445           GInetAddress *inet_address;
 446           GSocketAddress *address;
 447           gboolean result;
 448
 449           inet_address = g_inet_address_new_any (G_SOCKET_FAMILY_IPV4);
 450           address = g_inet_socket_address_new (inet_address, port);
 451           g_object_unref (inet_address);
 452
 453           g_socket_set_listen_backlog (socket4,
 454                                        listener->priv->listen_backlog);
 455
 456           result = g_socket_bind (socket4, address, TRUE, error) &&
 457                    g_socket_listen (socket4, error);
 458
 459           g_object_unref (address);
 460
 461           if (!result)
 462             {
 463               g_object_unref (socket4);
 464
 465               if (socket6 != NULL)
 466                 g_object_unref (socket6);
 467
 468               return FALSE;
 469             }
 470
 471           if (source_object)
 472             g_object_set_qdata_full (G_OBJECT (socket4), source_quark,
 473                                      g_object_ref (source_object),
 474                                      g_object_unref);
 475         }
 476       else
 477         /* Ok.  So IPv4 is not supported on this platform.  If we
 478          * succeeded at creating an IPv6 socket then that's OK, but
 479          * otherwise we need to tell the user we failed.
 480          */
 481         {
 482           if (socket6 != NULL)
 483             g_clear_error (error);
 484           else
 485             return FALSE;
 486         }
 487     }
 488
 489   g_assert (socket6 != NULL || socket4 != NULL);
 490
 491   if (socket6 != NULL)
 492     g_ptr_array_add (listener->priv->sockets, socket6);
 493
 494   if (socket4 != NULL)
 495     g_ptr_array_add (listener->priv->sockets, socket4);
 496
 497   if (G_SOCKET_LISTENER_GET_CLASS (listener)->changed)
 498     G_SOCKET_LISTENER_GET_CLASS (listener)->changed (listener);
 499
 500   return TRUE;
 501 }
 502
 503 static GList *
 504 add_sources (GSocketListener   *listener,
 505              GSocketSourceFunc  callback,
 506              gpointer           callback_data,
 507              GCancellable      *cancellable,
 508              GMainContext      *context)
 509 {
 510   GSocket *socket;
 511   GSource *source;
 512   GList *sources;
 513   int i;
 514
 515   sources = NULL;
 516   for (i = 0; i < listener->priv->sockets->len; i++)
 517     {
 518       socket = listener->priv->sockets->pdata[i];
 519
 520       source = g_socket_create_source (socket, G_IO_IN, cancellable);
 521       g_source_set_callback (source,
 522                              (GSourceFunc) callback,
 523                              callback_data, NULL);
 524       g_source_attach (source, context);
 525
 526       sources = g_list_prepend (sources, source);
 527     }
 528
 529   return sources;
 530 }
 531
 532 static void
 533 free_sources (GList *sources)
 534 {
 535   GSource *source;
 536   while (sources != NULL)
 537     {
 538       source = sources->data;
 539       sources = g_list_delete_link (sources, sources);
 540       g_source_destroy (source);
 541       g_source_unref (source);
 542     }
 543 }
 544
 545 struct AcceptData {
 546   GMainLoop *loop;
 547   GSocket *socket;
 548 };
 549
 550 static gboolean
 551 accept_callback (GSocket      *socket,
 552                  GIOCondition  condition,
 553                  gpointer      user_data)
 554 {
 555   struct AcceptData *data = user_data;
 556
 557   data->socket = socket;
 558   g_main_loop_quit (data->loop);
 559
 560   return TRUE;
 561 }
 562
 563 /**
 564  * g_socket_listener_accept_socket:
 565  * @listener: a #GSocketListener
 566  * @source_object: location where #GObject pointer will be stored, or %NULL
 567  * @cancellable: optional #GCancellable object, %NULL to ignore.
 568  * @error: #GError for error reporting, or %NULL to ignore.
 569  *
 570  * Blocks waiting for a client to connect to any of the sockets added
 571  * to the listener. Returns the #GSocket that was accepted.
 572  *
 573  * If you want to accept the high-level #GSocketConnection, not a #GSocket,
 574  * which is often the case, then you should use g_socket_listener_accept()
 575  * instead.
 576  *
 577  * If @source_object is not %NULL it will be filled out with the source
 578  * object specified when the corresponding socket or address was added
 579  * to the listener.
 580  *
 581  * If @cancellable is not %NULL, then the operation can be cancelled by
 582  * triggering the cancellable object from another thread. If the operation
 583  * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
 584  *
 585  * Returns: a #GSocket on success, %NULL on error.
 586  *
 587  * Since: 2.22
 588  */
 589 GSocket *
 590 g_socket_listener_accept_socket (GSocketListener  *listener,
 591                                  GObject         **source_object,
 592                                  GCancellable     *cancellable,
 593                                  GError          **error)
 594 {
 595   GSocket *accept_socket, *socket;
 596
 597   g_return_val_if_fail (G_IS_SOCKET_LISTENER (listener), NULL);
 598
 599   if (!check_listener (listener, error))
 600     return NULL;
 601
 602   if (listener->priv->sockets->len == 1)
 603     {
 604       accept_socket = listener->priv->sockets->pdata[0];
 605       if (!g_socket_condition_wait (accept_socket, G_IO_IN,
 606                                     cancellable, error))
 607         return NULL;
 608     }
 609   else
 610     {
 611       GList *sources;
 612       struct AcceptData data;
 613       GMainLoop *loop;
 614
 615       if (listener->priv->main_context == NULL)
 616         listener->priv->main_context = g_main_context_new ();
 617
 618       loop = g_main_loop_new (listener->priv->main_context, FALSE);
 619       data.loop = loop;
 620       sources = add_sources (listener,
 621                              accept_callback,
 622                              &data,
 623                              cancellable,
 624                              listener->priv->main_context);
 625       g_main_loop_run (loop);
 626       accept_socket = data.socket;
 627       free_sources (sources);
 628       g_main_loop_unref (loop);
 629     }
 630
 631   if (!(socket = g_socket_accept (accept_socket, cancellable, error)))
 632     return NULL;
 633
 634   if (source_object)
 635     *source_object = g_object_get_qdata (G_OBJECT (accept_socket), source_quark);
 636
 637   return socket;
 638 }
 639
 640 /**
 641  * g_socket_listener_accept:
 642  * @listener: a #GSocketListener
 643  * @source_object: location where #GObject pointer will be stored, or %NULL
 644  * @cancellable: optional #GCancellable object, %NULL to ignore.
 645  * @error: #GError for error reporting, or %NULL to ignore.
 646  *
 647  * Blocks waiting for a client to connect to any of the sockets added
 648  * to the listener. Returns a #GSocketConnection for the socket that was
 649  * accepted.
 650  *
 651  * If @source_object is not %NULL it will be filled out with the source
 652  * object specified when the corresponding socket or address was added
 653  * to the listener.
 654  *
 655  * If @cancellable is not %NULL, then the operation can be cancelled by
 656  * triggering the cancellable object from another thread. If the operation
 657  * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
 658  *
 659  * Returns: a #GSocketConnection on success, %NULL on error.
 660  *
 661  * Since: 2.22
 662  */
 663 GSocketConnection *
 664 g_socket_listener_accept (GSocketListener  *listener,
 665                           GObject         **source_object,
 666                           GCancellable     *cancellable,
 667                           GError          **error)
 668 {
 669   GSocketConnection *connection;
 670   GSocket *socket;
 671
 672   socket = g_socket_listener_accept_socket (listener,
 673                                             source_object,
 674                                             cancellable,
 675                                             error);
 676   if (socket == NULL)
 677     return NULL;
 678
 679   connection = g_socket_connection_factory_create_connection (socket);
 680   g_object_unref (socket);
 681
 682   return connection;
 683 }
 684
 685 struct AcceptAsyncData {
 686   GSimpleAsyncResult *simple;
 687   GCancellable *cancellable;
 688   GList *sources;
 689 };
 690
 691 static gboolean
 692 accept_ready (GSocket      *accept_socket,
 693               GIOCondition  condition,
 694               gpointer      _data)
 695 {
 696   struct AcceptAsyncData *data = _data;
 697   GError *error = NULL;
 698   GSocket *socket;
 699   GObject *source_object;
 700
 701   socket = g_socket_accept (accept_socket, data->cancellable, &error);
 702   if (socket)
 703     {
 704       g_simple_async_result_set_op_res_gpointer (data->simple, socket,
 705                                                  g_object_unref);
 706       source_object = g_object_get_qdata (G_OBJECT (accept_socket), source_quark);
 707       if (source_object)
 708         g_object_set_qdata_full (G_OBJECT (data->simple),
 709                                  source_quark,
 710                                  g_object_ref (source_object), g_object_unref);
 711     }
 712   else
 713     {
 714       g_simple_async_result_set_from_error (data->simple, error);
 715       g_error_free (error);
 716     }
 717
 718   g_simple_async_result_complete_in_idle (data->simple);
 719   g_object_unref (data->simple);
 720   free_sources (data->sources);
 721   g_free (data);
 722
 723   return FALSE;
 724 }
 725
 726 /**
 727  * g_socket_listener_accept_socket_async:
 728  * @listener: a #GSocketListener
 729  * @cancellable: a #GCancellable, or %NULL
 730  * @callback: a #GAsyncReadyCallback
 731  * @user_data: user data for the callback
 732  *
 733  * This is the asynchronous version of g_socket_listener_accept_socket().
 734  *
 735  * When the operation is finished @callback will be
 736  * called. You can then call g_socket_listener_accept_socket_finish()
 737  * to get the result of the operation.
 738  *
 739  * Since: 2.22
 740  */
 741 void
 742 g_socket_listener_accept_socket_async (GSocketListener     *listener,
 743                                        GCancellable        *cancellable,
 744                                        GAsyncReadyCallback  callback,
 745                                        gpointer             user_data)
 746 {
 747   struct AcceptAsyncData *data;
 748   GError *error = NULL;
 749
 750   if (!check_listener (listener, &error))
 751     {
 752       g_simple_async_report_gerror_in_idle (G_OBJECT (listener),
 753                                             callback, user_data,
 754                                             error);
 755       g_error_free (error);
 756       return;
 757     }
 758
 759   data = g_new0 (struct AcceptAsyncData, 1);
 760   data->simple = g_simple_async_result_new (G_OBJECT (listener),
 761                                             callback, user_data,
 762                                             g_socket_listener_accept_socket_async);
 763   data->cancellable = cancellable;
 764   data->sources = add_sources (listener,
 765                                accept_ready,
 766                                data,
 767                                cancellable,
 768                                g_main_context_get_thread_default ());
 769 }
 770
 771 /**
 772  * g_socket_listener_accept_socket_finish:
 773  * @listener: a #GSocketListener
 774  * @result: a #GAsyncResult.
 775  * @source_object: Optional #GObject identifying this source
 776  * @error: a #GError location to store the error occuring, or %NULL to
 777  * ignore.
 778  *
 779  * Finishes an async accept operation. See g_socket_listener_accept_socket_async()
 780  *
 781  * Returns: a #GSocket on success, %NULL on error.
 782  *
 783  * Since: 2.22
 784  */
 785 GSocket *
 786 g_socket_listener_accept_socket_finish (GSocketListener  *listener,
 787                                         GAsyncResult     *result,
 788                                         GObject         **source_object,
 789                                         GError          **error)
 790 {
 791   GSocket *socket;
 792   GSimpleAsyncResult *simple;
 793
 794   g_return_val_if_fail (G_IS_SOCKET_LISTENER (listener), FALSE);
 795
 796   simple = G_SIMPLE_ASYNC_RESULT (result);
 797
 798   if (g_simple_async_result_propagate_error (simple, error))
 799     return NULL;
 800
 801   g_warn_if_fail (g_simple_async_result_get_source_tag (simple) == g_socket_listener_accept_socket_async);
 802
 803   socket = g_simple_async_result_get_op_res_gpointer (simple);
 804
 805   if (source_object)
 806     *source_object = g_object_get_qdata (G_OBJECT (result), source_quark);
 807
 808   return g_object_ref (socket);
 809 }
 810
 811 /**
 812  * g_socket_listener_accept_async:
 813  * @listener: a #GSocketListener
 814  * @cancellable: a #GCancellable, or %NULL
 815  * @callback: a #GAsyncReadyCallback
 816  * @user_data: user data for the callback
 817  *
 818  * This is the asynchronous version of g_socket_listener_accept().
 819  *
 820  * When the operation is finished @callback will be
 821  * called. You can then call g_socket_listener_accept_socket()
 822  * to get the result of the operation.
 823  *
 824  * Since: 2.22
 825  */
 826 void
 827 g_socket_listener_accept_async (GSocketListener     *listener,
 828                                 GCancellable        *cancellable,
 829                                 GAsyncReadyCallback  callback,
 830                                 gpointer             user_data)
 831 {
 832   g_socket_listener_accept_socket_async (listener,
 833                                          cancellable,
 834                                          callback,
 835                                          user_data);
 836 }
 837
 838 /**
 839  * g_socket_listener_accept_finish:
 840  * @listener: a #GSocketListener
 841  * @result: a #GAsyncResult.
 842  * @source_object: Optional #GObject identifying this source
 843  * @error: a #GError location to store the error occuring, or %NULL to
 844  * ignore.
 845  *
 846  * Finishes an async accept operation. See g_socket_listener_accept_async()
 847  *
 848  * Returns: a #GSocketConnection on success, %NULL on error.
 849  *
 850  * Since: 2.22
 851  */
 852 GSocketConnection *
 853 g_socket_listener_accept_finish (GSocketListener  *listener,
 854                                  GAsyncResult     *result,
 855                                  GObject         **source_object,
 856                                  GError          **error)
 857 {
 858   GSocket *socket;
 859   GSocketConnection *connection;
 860
 861   socket = g_socket_listener_accept_socket_finish (listener,
 862                                                    result,
 863                                                    source_object,
 864                                                    error);
 865   if (socket == NULL)
 866     return NULL;
 867
 868   connection = g_socket_connection_factory_create_connection (socket);
 869   g_object_unref (socket);
 870   return connection;
 871 }
 872
 873 /**
 874  * g_socket_listener_set_backlog:
 875  * @listener: a #GSocketListener
 876  * @listen_backlog: an integer
 877  *
 878  * Sets the listen backlog on the sockets in the listener.
 879  *
 880  * See g_socket_set_listen_backlog() for details
 881  *
 882  * Since: 2.22
 883  */
 884 void
 885 g_socket_listener_set_backlog (GSocketListener *listener,
 886                                int              listen_backlog)
 887 {
 888   GSocket *socket;
 889   int i;
 890
 891   if (listener->priv->closed)
 892     return;
 893
 894   listener->priv->listen_backlog = listen_backlog;
 895
 896   for (i = 0; i < listener->priv->sockets->len; i++)
 897     {
 898       socket = listener->priv->sockets->pdata[i];
 899       g_socket_set_listen_backlog (socket, listen_backlog);
 900     }
 901 }
 902
 903 /**
 904  * g_socket_listener_close:
 905  * @listener: a #GSocketListener
 906  *
 907  * Closes all the sockets in the listener.
 908  *
 909  * Since: 2.22
 910  */
 911 void
 912 g_socket_listener_close (GSocketListener *listener)
 913 {
 914   GSocket *socket;
 915   int i;
 916
 917   g_return_if_fail (G_IS_SOCKET_LISTENER (listener));
 918
 919   if (listener->priv->closed)
 920     return;
 921
 922   for (i = 0; i < listener->priv->sockets->len; i++)
 923     {
 924       socket = listener->priv->sockets->pdata[i];
 925       g_socket_close (socket, NULL);
 926     }
 927   listener->priv->closed = TRUE;
 928 }
 929
 930 #define __G_SOCKET_LISTENER_C__
 931 #include "gioaliasdef.c"