libsoup/soup-session.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
   2 /*
   3  * soup-session.c
   4  *
   5  * Copyright (C) 2000-2003, Ximian, Inc.
   6  */
   7
   8 #ifdef HAVE_CONFIG_H
   9 #include <config.h>
  10 #endif
  11
  12 #include <unistd.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15
  16 #include "soup-auth.h"
  17 #include "soup-session.h"
  18 #include "soup-connection.h"
  19 #include "soup-connection-ntlm.h"
  20 #include "soup-marshal.h"
  21 #include "soup-message-filter.h"
  22 #include "soup-message-queue.h"
  23 #include "soup-ssl.h"
  24 #include "soup-uri.h"
  25
  26 typedef struct {
  27         SoupUri    *root_uri;
  28
  29         GSList     *connections;      /* CONTAINS: SoupConnection */
  30         guint       num_conns;
  31
  32         GHashTable *auth_realms;      /* path -> scheme:realm */
  33         GHashTable *auths;            /* scheme:realm -> SoupAuth */
  34 } SoupSessionHost;
  35
  36 typedef struct {
  37         SoupUri *proxy_uri;
  38         guint max_conns, max_conns_per_host;
  39         gboolean use_ntlm;
  40
  41         char *ssl_ca_file;
  42         gpointer ssl_creds;
  43
  44         GSList *filters;
  45
  46         GHashTable *hosts; /* SoupUri -> SoupSessionHost */
  47         GHashTable *conns; /* SoupConnection -> SoupSessionHost */
  48         guint num_conns;
  49
  50         SoupSessionHost *proxy_host;
  51
  52         /* Must hold the host_lock before potentially creating a
  53          * new SoupSessionHost, or adding/removing a connection.
  54          * Must not emit signals or destroy objects while holding it.
  55          */
  56         GMutex *host_lock;
  57
  58         GMainContext *async_context;
  59
  60         /* Holds the timeout value for the connection, when
  61            no response is received.
  62         */
  63         guint timeout;
  64 } SoupSessionPrivate;
  65 #define SOUP_SESSION_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SOUP_TYPE_SESSION, SoupSessionPrivate))
  66
  67 static guint    host_uri_hash  (gconstpointer key);
  68 static gboolean host_uri_equal (gconstpointer v1, gconstpointer v2);
  69 static void     free_host      (SoupSessionHost *host);
  70
  71 static void setup_message   (SoupMessageFilter *filter, SoupMessage *msg);
  72
  73 static void queue_message   (SoupSession *session, SoupMessage *msg,
  74                              SoupMessageCallbackFn callback,
  75                              gpointer user_data);
  76 static void requeue_message (SoupSession *session, SoupMessage *msg);
  77 static void cancel_message  (SoupSession *session, SoupMessage *msg);
  78
  79 #define SOUP_SESSION_MAX_CONNS_DEFAULT 10
  80 #define SOUP_SESSION_MAX_CONNS_PER_HOST_DEFAULT 4
  81
  82 static void filter_iface_init (SoupMessageFilterClass *filter_class);
  83
  84 G_DEFINE_TYPE_EXTENDED (SoupSession, soup_session, G_TYPE_OBJECT, 0,
  85                         G_IMPLEMENT_INTERFACE (SOUP_TYPE_MESSAGE_FILTER,
  86                                                filter_iface_init))
  87
  88 enum {
  89         AUTHENTICATE,
  90         REAUTHENTICATE,
  91         LAST_SIGNAL
  92 };
  93
  94 static guint signals[LAST_SIGNAL] = { 0 };
  95
  96 enum {
  97         PROP_0,
  98
  99         PROP_PROXY_URI,
 100         PROP_MAX_CONNS,
 101         PROP_MAX_CONNS_PER_HOST,
 102         PROP_USE_NTLM,
 103         PROP_SSL_CA_FILE,
 104         PROP_ASYNC_CONTEXT,
 105         PROP_TIMEOUT,
 106
 107         LAST_PROP
 108 };
 109
 110 static void set_property (GObject *object, guint prop_id,
 111                           const GValue *value, GParamSpec *pspec);
 112 static void get_property (GObject *object, guint prop_id,
 113                           GValue *value, GParamSpec *pspec);
 114
 115 static void
 116 soup_session_init (SoupSession *session)
 117 {
 118         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 119
 120         session->queue = soup_message_queue_new ();
 121
 122         priv->host_lock = g_mutex_new ();
 123         priv->hosts = g_hash_table_new (host_uri_hash, host_uri_equal);
 124         priv->conns = g_hash_table_new (NULL, NULL);
 125
 126         priv->max_conns = SOUP_SESSION_MAX_CONNS_DEFAULT;
 127         priv->max_conns_per_host = SOUP_SESSION_MAX_CONNS_PER_HOST_DEFAULT;
 128
 129         priv->timeout = 0;
 130 }
 131
 132 static gboolean
 133 foreach_free_host (gpointer key, gpointer host, gpointer data)
 134 {
 135         free_host (host);
 136         return TRUE;
 137 }
 138
 139 static void
 140 cleanup_hosts (SoupSessionPrivate *priv)
 141 {
 142         GHashTable *old_hosts;
 143
 144         g_mutex_lock (priv->host_lock);
 145         old_hosts = priv->hosts;
 146         priv->hosts = g_hash_table_new (host_uri_hash, host_uri_equal);
 147         g_mutex_unlock (priv->host_lock);
 148
 149         g_hash_table_foreach_remove (old_hosts, foreach_free_host, NULL);
 150         g_hash_table_destroy (old_hosts);
 151 }
 152
 153 static void
 154 dispose (GObject *object)
 155 {
 156         SoupSession *session = SOUP_SESSION (object);
 157         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 158         GSList *f;
 159
 160         soup_session_abort (session);
 161         cleanup_hosts (priv);
 162
 163         if (priv->filters) {
 164                 for (f = priv->filters; f; f = f->next)
 165                         g_object_unref (f->data);
 166                 g_slist_free (priv->filters);
 167                 priv->filters = NULL;
 168         }
 169
 170         G_OBJECT_CLASS (soup_session_parent_class)->dispose (object);
 171 }
 172
 173 static void
 174 finalize (GObject *object)
 175 {
 176         SoupSession *session = SOUP_SESSION (object);
 177         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 178
 179         soup_message_queue_destroy (session->queue);
 180
 181         g_mutex_free (priv->host_lock);
 182         g_hash_table_destroy (priv->hosts);
 183         g_hash_table_destroy (priv->conns);
 184
 185         if (priv->async_context)
 186                 g_main_context_unref (priv->async_context);
 187
 188         G_OBJECT_CLASS (soup_session_parent_class)->finalize (object);
 189 }
 190
 191 static void
 192 soup_session_class_init (SoupSessionClass *session_class)
 193 {
 194         GObjectClass *object_class = G_OBJECT_CLASS (session_class);
 195
 196         g_type_class_add_private (session_class, sizeof (SoupSessionPrivate));
 197
 198         /* virtual method definition */
 199         session_class->queue_message = queue_message;
 200         session_class->requeue_message = requeue_message;
 201         session_class->cancel_message = cancel_message;
 202
 203         /* virtual method override */
 204         object_class->dispose = dispose;
 205         object_class->finalize = finalize;
 206         object_class->set_property = set_property;
 207         object_class->get_property = get_property;
 208
 209         /* signals */
 210
 211         /**
 212          * SoupSession::authenticate:
 213          * @session: the session
 214          * @msg: the #SoupMessage being sent
 215          * @auth_type: the authentication type
 216          * @auth_realm: the realm being authenticated to
 217          * @username: the signal handler should set this to point to
 218          * the provided username
 219          * @password: the signal handler should set this to point to
 220          * the provided password
 221          *
 222          * Emitted when the session requires authentication. The
 223          * credentials may come from the user, or from cached
 224          * information. If no credentials are available, leave
 225          * @username and @password unchanged.
 226          *
 227          * If the provided credentials fail, the #reauthenticate
 228          * signal will be emitted.
 229          **/
 230         signals[AUTHENTICATE] =
 231                 g_signal_new ("authenticate",
 232                               G_OBJECT_CLASS_TYPE (object_class),
 233                               G_SIGNAL_RUN_FIRST,
 234                               G_STRUCT_OFFSET (SoupSessionClass, authenticate),
 235                               NULL, NULL,
 236                               soup_marshal_NONE__OBJECT_STRING_STRING_POINTER_POINTER,
 237                               G_TYPE_NONE, 5,
 238                               SOUP_TYPE_MESSAGE,
 239                               G_TYPE_STRING,
 240                               G_TYPE_STRING,
 241                               G_TYPE_POINTER,
 242                               G_TYPE_POINTER);
 243
 244         /**
 245          * SoupSession::reauthenticate:
 246          * @session: the session
 247          * @msg: the #SoupMessage being sent
 248          * @auth_type: the authentication type
 249          * @auth_realm: the realm being authenticated to
 250          * @username: the signal handler should set this to point to
 251          * the provided username
 252          * @password: the signal handler should set this to point to
 253          * the provided password
 254          *
 255          * Emitted when the credentials provided by the application to
 256          * the #authenticate signal have failed. This gives the
 257          * application a second chance to provide authentication
 258          * credentials. If the new credentials also fail, #SoupSession
 259          * will emit #reauthenticate again, and will continue doing so
 260          * until the provided credentials work, or a #reauthenticate
 261          * signal emission "fails" (because the handler left @username
 262          * and @password unchanged). At that point, the 401 or 407
 263          * error status will be returned to the caller.
 264          *
 265          * If your application only uses cached passwords, it should
 266          * only connect to #authenticate, and not #reauthenticate.
 267          *
 268          * If your application always prompts the user for a password,
 269          * and never uses cached information, then you can connect the
 270          * same handler to #authenticate and #reauthenticate.
 271          *
 272          * To get standard web-browser behavior, return either cached
 273          * information or a user-provided password (whichever is
 274          * available) from the #authenticate handler, but return only
 275          * user-provided information from the #reauthenticate handler.
 276          **/
 277         signals[REAUTHENTICATE] =
 278                 g_signal_new ("reauthenticate",
 279                               G_OBJECT_CLASS_TYPE (object_class),
 280                               G_SIGNAL_RUN_FIRST,
 281                               G_STRUCT_OFFSET (SoupSessionClass, reauthenticate),
 282                               NULL, NULL,
 283                               soup_marshal_NONE__OBJECT_STRING_STRING_POINTER_POINTER,
 284                               G_TYPE_NONE, 5,
 285                               SOUP_TYPE_MESSAGE,
 286                               G_TYPE_STRING,
 287                               G_TYPE_STRING,
 288                               G_TYPE_POINTER,
 289                               G_TYPE_POINTER);
 290
 291         /* properties */
 292         g_object_class_install_property (
 293                 object_class, PROP_PROXY_URI,
 294                 g_param_spec_pointer (SOUP_SESSION_PROXY_URI,
 295                                       "Proxy URI",
 296                                       "The HTTP Proxy to use for this session",
 297                                       G_PARAM_READWRITE));
 298         g_object_class_install_property (
 299                 object_class, PROP_MAX_CONNS,
 300                 g_param_spec_int (SOUP_SESSION_MAX_CONNS,
 301                                   "Max Connection Count",
 302                                   "The maximum number of connections that the session can open at once",
 303                                   1,
 304                                   G_MAXINT,
 305                                   10,
 306                                   G_PARAM_READWRITE));
 307         g_object_class_install_property (
 308                 object_class, PROP_MAX_CONNS_PER_HOST,
 309                 g_param_spec_int (SOUP_SESSION_MAX_CONNS_PER_HOST,
 310                                   "Max Per-Host Connection Count",
 311                                   "The maximum number of connections that the session can open at once to a given host",
 312                                   1,
 313                                   G_MAXINT,
 314                                   4,
 315                                   G_PARAM_READWRITE));
 316         g_object_class_install_property (
 317                 object_class, PROP_USE_NTLM,
 318                 g_param_spec_boolean (SOUP_SESSION_USE_NTLM,
 319                                       "Use NTLM",
 320                                       "Whether or not to use NTLM authentication",
 321                                       FALSE,
 322                                       G_PARAM_READWRITE));
 323         g_object_class_install_property (
 324                 object_class, PROP_SSL_CA_FILE,
 325                 g_param_spec_string (SOUP_SESSION_SSL_CA_FILE,
 326                                      "SSL CA file",
 327                                      "File containing SSL CA certificates",
 328                                      NULL,
 329                                      G_PARAM_READWRITE));
 330         g_object_class_install_property (
 331                 object_class, PROP_ASYNC_CONTEXT,
 332                 g_param_spec_pointer (SOUP_SESSION_ASYNC_CONTEXT,
 333                                       "Async GMainContext",
 334                                       "The GMainContext to dispatch async I/O in",
 335                                       G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
 336         g_object_class_install_property (
 337                 object_class, PROP_TIMEOUT,
 338                 g_param_spec_uint (SOUP_SESSION_TIMEOUT,
 339                                    "Timeout value",
 340                                    "Value in seconds to timeout a blocking I/O",
 341                                    0, G_MAXUINT, 0,
 342                                    G_PARAM_READWRITE));
 343 }
 344
 345 static void
 346 filter_iface_init (SoupMessageFilterClass *filter_class)
 347 {
 348         /* interface implementation */
 349         filter_class->setup_message = setup_message;
 350 }
 351
 352
 353 static gboolean
 354 safe_uri_equal (const SoupUri *a, const SoupUri *b)
 355 {
 356         if (!a && !b)
 357                 return TRUE;
 358
 359         if ((a && !b) || (b && !a))
 360                 return FALSE;
 361
 362         return soup_uri_equal (a, b);
 363 }
 364
 365 static gboolean
 366 safe_str_equal (const char *a, const char *b)
 367 {
 368         if (!a && !b)
 369                 return TRUE;
 370
 371         if ((a && !b) || (b && !a))
 372                 return FALSE;
 373
 374         return strcmp (a, b) == 0;
 375 }
 376
 377 static void
 378 set_property (GObject *object, guint prop_id,
 379               const GValue *value, GParamSpec *pspec)
 380 {
 381         SoupSession *session = SOUP_SESSION (object);
 382         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 383         gpointer pval;
 384         gboolean need_abort = FALSE;
 385         gboolean ca_file_changed = FALSE;
 386         const char *new_ca_file;
 387
 388         switch (prop_id) {
 389         case PROP_PROXY_URI:
 390                 pval = g_value_get_pointer (value);
 391
 392                 if (!safe_uri_equal (priv->proxy_uri, pval))
 393                         need_abort = TRUE;
 394
 395                 if (priv->proxy_uri)
 396                         soup_uri_free (priv->proxy_uri);
 397
 398                 priv->proxy_uri = pval ? soup_uri_copy (pval) : NULL;
 399
 400                 if (need_abort) {
 401                         soup_session_abort (session);
 402                         cleanup_hosts (priv);
 403                 }
 404
 405                 break;
 406         case PROP_MAX_CONNS:
 407                 priv->max_conns = g_value_get_int (value);
 408                 break;
 409         case PROP_MAX_CONNS_PER_HOST:
 410                 priv->max_conns_per_host = g_value_get_int (value);
 411                 break;
 412         case PROP_USE_NTLM:
 413                 priv->use_ntlm = g_value_get_boolean (value);
 414                 break;
 415         case PROP_SSL_CA_FILE:
 416                 new_ca_file = g_value_get_string (value);
 417
 418                 if (!safe_str_equal (priv->ssl_ca_file, new_ca_file))
 419                         ca_file_changed = TRUE;
 420
 421                 g_free (priv->ssl_ca_file);
 422                 priv->ssl_ca_file = g_strdup (new_ca_file);
 423
 424                 if (ca_file_changed) {
 425                         if (priv->ssl_creds) {
 426                                 soup_ssl_free_client_credentials (priv->ssl_creds);
 427                                 priv->ssl_creds = NULL;
 428                         }
 429
 430                         cleanup_hosts (priv);
 431                 }
 432
 433                 break;
 434         case PROP_ASYNC_CONTEXT:
 435                 priv->async_context = g_value_get_pointer (value);
 436                 if (priv->async_context)
 437                         g_main_context_ref (priv->async_context);
 438                 break;
 439         case PROP_TIMEOUT:
 440                 priv->timeout = g_value_get_uint (value);
 441                 break;
 442         default:
 443                 break;
 444         }
 445 }
 446
 447 static void
 448 get_property (GObject *object, guint prop_id,
 449               GValue *value, GParamSpec *pspec)
 450 {
 451         SoupSession *session = SOUP_SESSION (object);
 452         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 453
 454         switch (prop_id) {
 455         case PROP_PROXY_URI:
 456                 g_value_set_pointer (value, priv->proxy_uri ?
 457                                      soup_uri_copy (priv->proxy_uri) :
 458                                      NULL);
 459                 break;
 460         case PROP_MAX_CONNS:
 461                 g_value_set_int (value, priv->max_conns);
 462                 break;
 463         case PROP_MAX_CONNS_PER_HOST:
 464                 g_value_set_int (value, priv->max_conns_per_host);
 465                 break;
 466         case PROP_USE_NTLM:
 467                 g_value_set_boolean (value, priv->use_ntlm);
 468                 break;
 469         case PROP_SSL_CA_FILE:
 470                 g_value_set_string (value, priv->ssl_ca_file);
 471                 break;
 472         case PROP_ASYNC_CONTEXT:
 473                 g_value_set_pointer (value, priv->async_context ? g_main_context_ref (priv->async_context) : NULL);
 474                 break;
 475         case PROP_TIMEOUT:
 476                 g_value_set_uint (value, priv->timeout);
 477                 break;
 478         default:
 479                 break;
 480         }
 481 }
 482
 483
 484 /**
 485  * soup_session_add_filter:
 486  * @session: a #SoupSession
 487  * @filter: an object implementing the #SoupMessageFilter interface
 488  *
 489  * Adds @filter to @session's list of message filters to be applied to
 490  * all messages.
 491  **/
 492 void
 493 soup_session_add_filter (SoupSession *session, SoupMessageFilter *filter)
 494 {
 495         SoupSessionPrivate *priv;
 496
 497         g_return_if_fail (SOUP_IS_SESSION (session));
 498         g_return_if_fail (SOUP_IS_MESSAGE_FILTER (filter));
 499         priv = SOUP_SESSION_GET_PRIVATE (session);
 500
 501         g_object_ref (filter);
 502         priv->filters = g_slist_prepend (priv->filters, filter);
 503 }
 504
 505 /**
 506  * soup_session_remove_filter:
 507  * @session: a #SoupSession
 508  * @filter: an object implementing the #SoupMessageFilter interface
 509  *
 510  * Removes @filter from @session's list of message filters
 511  **/
 512 void
 513 soup_session_remove_filter (SoupSession *session, SoupMessageFilter *filter)
 514 {
 515         SoupSessionPrivate *priv;
 516
 517         g_return_if_fail (SOUP_IS_SESSION (session));
 518         g_return_if_fail (SOUP_IS_MESSAGE_FILTER (filter));
 519         priv = SOUP_SESSION_GET_PRIVATE (session);
 520
 521         priv->filters = g_slist_remove (priv->filters, filter);
 522         g_object_unref (filter);
 523 }
 524
 525
 526 /* Hosts */
 527 static guint
 528 host_uri_hash (gconstpointer key)
 529 {
 530         const SoupUri *uri = key;
 531
 532         return (uri->protocol << 16) + uri->port + g_str_hash (uri->host);
 533 }
 534
 535 static gboolean
 536 host_uri_equal (gconstpointer v1, gconstpointer v2)
 537 {
 538         const SoupUri *one = v1;
 539         const SoupUri *two = v2;
 540
 541         if (one->protocol != two->protocol)
 542                 return FALSE;
 543         if (one->port != two->port)
 544                 return FALSE;
 545
 546         return strcmp (one->host, two->host) == 0;
 547 }
 548
 549 static SoupSessionHost *
 550 soup_session_host_new (SoupSession *session, const SoupUri *source_uri)
 551 {
 552         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 553         SoupSessionHost *host;
 554
 555         host = g_new0 (SoupSessionHost, 1);
 556         host->root_uri = soup_uri_copy_root (source_uri);
 557
 558         if (host->root_uri->protocol == SOUP_PROTOCOL_HTTPS &&
 559             !priv->ssl_creds) {
 560                 priv->ssl_creds =
 561                         soup_ssl_get_client_credentials (priv->ssl_ca_file);
 562         }
 563
 564         return host;
 565 }
 566
 567 /* Note: get_host_for_message doesn't lock the host_lock. The caller
 568  * must do it itself if there's a chance the host doesn't already
 569  * exist.
 570  */
 571 static SoupSessionHost *
 572 get_host_for_message (SoupSession *session, SoupMessage *msg)
 573 {
 574         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 575         SoupSessionHost *host;
 576         const SoupUri *source = soup_message_get_uri (msg);
 577
 578         host = g_hash_table_lookup (priv->hosts, source);
 579         if (host)
 580                 return host;
 581
 582         host = soup_session_host_new (session, source);
 583         g_hash_table_insert (priv->hosts, host->root_uri, host);
 584
 585         return host;
 586 }
 587
 588 /* Note: get_proxy_host doesn't lock the host_lock. The caller must do
 589  * it itself if there's a chance the host doesn't already exist.
 590  */
 591 static SoupSessionHost *
 592 get_proxy_host (SoupSession *session)
 593 {
 594         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 595
 596         if (priv->proxy_host || !priv->proxy_uri)
 597                 return priv->proxy_host;
 598
 599         priv->proxy_host =
 600                 soup_session_host_new (session, priv->proxy_uri);
 601         return priv->proxy_host;
 602 }
 603
 604 static void
 605 free_realm (gpointer path, gpointer scheme_realm, gpointer data)
 606 {
 607         g_free (path);
 608         g_free (scheme_realm);
 609 }
 610
 611 static void
 612 free_auth (gpointer scheme_realm, gpointer auth, gpointer data)
 613 {
 614         g_free (scheme_realm);
 615         g_object_unref (auth);
 616 }
 617
 618 static void
 619 free_host (SoupSessionHost *host)
 620 {
 621         while (host->connections) {
 622                 SoupConnection *conn = host->connections->data;
 623
 624                 host->connections = g_slist_remove (host->connections, conn);
 625                 soup_connection_disconnect (conn);
 626         }
 627
 628         if (host->auth_realms) {
 629                 g_hash_table_foreach (host->auth_realms, free_realm, NULL);
 630                 g_hash_table_destroy (host->auth_realms);
 631         }
 632         if (host->auths) {
 633                 g_hash_table_foreach (host->auths, free_auth, NULL);
 634                 g_hash_table_destroy (host->auths);
 635         }
 636
 637         soup_uri_free (host->root_uri);
 638         g_free (host);
 639 }
 640
 641 /* Authentication */
 642
 643 static SoupAuth *
 644 lookup_auth (SoupSession *session, SoupMessage *msg, gboolean proxy)
 645 {
 646         SoupSessionHost *host;
 647         char *path, *dir;
 648         const char *realm, *const_path;
 649
 650         if (proxy) {
 651                 host = get_proxy_host (session);
 652                 const_path = "/";
 653         } else {
 654                 host = get_host_for_message (session, msg);
 655                 const_path = soup_message_get_uri (msg)->path;
 656
 657                 if (!const_path)
 658                         const_path = "/";
 659         }
 660         g_return_val_if_fail (host != NULL, NULL);
 661
 662         if (!host->auth_realms)
 663                 return NULL;
 664
 665         path = g_strdup (const_path);
 666         dir = path;
 667         do {
 668                 realm = g_hash_table_lookup (host->auth_realms, path);
 669                 if (realm)
 670                         break;
 671
 672                 dir = strrchr (path, '/');
 673                 if (dir)
 674                         *dir = '\0';
 675         } while (dir);
 676
 677         g_free (path);
 678         if (realm)
 679                 return g_hash_table_lookup (host->auths, realm);
 680         else
 681                 return NULL;
 682 }
 683
 684 static void
 685 invalidate_auth (SoupSessionHost *host, SoupAuth *auth)
 686 {
 687         char *realm;
 688         gpointer key, value;
 689
 690         realm = g_strdup_printf ("%s:%s",
 691                                  soup_auth_get_scheme_name (auth),
 692                                  soup_auth_get_realm (auth));
 693
 694         if (g_hash_table_lookup_extended (host->auths, realm, &key, &value) &&
 695             auth == (SoupAuth *)value) {
 696                 g_hash_table_remove (host->auths, realm);
 697                 g_free (key);
 698                 g_object_unref (auth);
 699         }
 700         g_free (realm);
 701 }
 702
 703 static gboolean
 704 authenticate_auth (SoupSession *session, SoupAuth *auth,
 705                    SoupMessage *msg, gboolean prior_auth_failed,
 706                    gboolean proxy)
 707 {
 708         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 709         const SoupUri *uri;
 710         char *username = NULL, *password = NULL;
 711
 712         if (proxy)
 713                 uri = priv->proxy_uri;
 714         else
 715                 uri = soup_message_get_uri (msg);
 716
 717         if (uri->passwd && !prior_auth_failed) {
 718                 soup_auth_authenticate (auth, uri->user, uri->passwd);
 719                 return TRUE;
 720         }
 721
 722         g_signal_emit (session, signals[prior_auth_failed ? REAUTHENTICATE : AUTHENTICATE], 0,
 723                        msg, soup_auth_get_scheme_name (auth),
 724                        soup_auth_get_realm (auth),
 725                        &username, &password);
 726         if (username || password)
 727                 soup_auth_authenticate (auth, username, password);
 728         if (username)
 729                 g_free (username);
 730         if (password) {
 731                 memset (password, 0, strlen (password));
 732                 g_free (password);
 733         }
 734
 735         return soup_auth_is_authenticated (auth);
 736 }
 737
 738 static gboolean
 739 update_auth_internal (SoupSession *session, SoupMessage *msg,
 740                       const GSList *headers, gboolean proxy,
 741                       gboolean got_unauthorized)
 742 {
 743         SoupSessionHost *host;
 744         SoupAuth *new_auth, *prior_auth, *old_auth;
 745         gpointer old_path, old_realm;
 746         const SoupUri *msg_uri;
 747         const char *path;
 748         char *realm;
 749         GSList *pspace, *p;
 750         gboolean prior_auth_failed = FALSE;
 751
 752         if (proxy)
 753                 host = get_proxy_host (session);
 754         else
 755                 host = get_host_for_message (session, msg);
 756
 757         g_return_val_if_fail (host != NULL, FALSE);
 758
 759         /* Try to construct a new auth from the headers; if we can't,
 760          * there's no way we'll be able to authenticate.
 761          */
 762         msg_uri = soup_message_get_uri (msg);
 763         new_auth = soup_auth_new_from_header_list (headers);
 764         if (!new_auth)
 765                 return FALSE;
 766
 767         /* See if this auth is the same auth we used last time */
 768         prior_auth = lookup_auth (session, msg, proxy);
 769         if (prior_auth &&
 770             G_OBJECT_TYPE (prior_auth) == G_OBJECT_TYPE (new_auth) &&
 771             !strcmp (soup_auth_get_realm (prior_auth),
 772                      soup_auth_get_realm (new_auth))) {
 773                 if (!got_unauthorized) {
 774                         /* The user is just trying to preauthenticate
 775                          * using information we already have, so
 776                          * there's nothing more that needs to be done.
 777                          */
 778                         g_object_unref (new_auth);
 779                         return TRUE;
 780                 }
 781
 782                 /* The server didn't like the username/password we
 783                  * provided before. Invalidate it and note this fact.
 784                  */
 785                 invalidate_auth (host, prior_auth);
 786                 prior_auth_failed = TRUE;
 787         }
 788
 789         if (!host->auth_realms) {
 790                 host->auth_realms = g_hash_table_new (g_str_hash, g_str_equal);
 791                 host->auths = g_hash_table_new (g_str_hash, g_str_equal);
 792         }
 793
 794         /* Record where this auth realm is used */
 795         realm = g_strdup_printf ("%s:%s",
 796                                  soup_auth_get_scheme_name (new_auth),
 797                                  soup_auth_get_realm (new_auth));
 798
 799         /*
 800          * RFC 2617 is somewhat unclear about the scope of protection
 801          * spaces with regard to proxies.  The only mention of it is
 802          * as an aside in section 3.2.1, where it is defining the fields
 803          * of a Digest challenge and says that the protection space is
 804          * always the entire proxy.  Is this the case for all authentication
 805          * schemes or just Digest?  Who knows, but we're assuming all.
 806          */
 807         if (proxy)
 808                 pspace = g_slist_prepend (NULL, g_strdup (""));
 809         else
 810                 pspace = soup_auth_get_protection_space (new_auth, msg_uri);
 811
 812         for (p = pspace; p; p = p->next) {
 813                 path = p->data;
 814                 if (g_hash_table_lookup_extended (host->auth_realms, path,
 815                                                   &old_path, &old_realm)) {
 816                         g_hash_table_remove (host->auth_realms, old_path);
 817                         g_free (old_path);
 818                         g_free (old_realm);
 819                 }
 820
 821                 g_hash_table_insert (host->auth_realms,
 822                                      g_strdup (path), g_strdup (realm));
 823         }
 824         soup_auth_free_protection_space (new_auth, pspace);
 825
 826         /* Now, make sure the auth is recorded. (If there's a
 827          * pre-existing auth, we keep that rather than the new one,
 828          * since the old one might already be authenticated.)
 829          */
 830         old_auth = g_hash_table_lookup (host->auths, realm);
 831         if (old_auth) {
 832                 g_free (realm);
 833                 g_object_unref (new_auth);
 834                 new_auth = old_auth;
 835         } else
 836                 g_hash_table_insert (host->auths, realm, new_auth);
 837
 838         /* If we need to authenticate, try to do it. */
 839         if (!soup_auth_is_authenticated (new_auth)) {
 840                 return authenticate_auth (session, new_auth,
 841                                           msg, prior_auth_failed, proxy);
 842         }
 843
 844         /* Otherwise we're good. */
 845         return TRUE;
 846 }
 847
 848 static void
 849 connection_authenticate (SoupConnection *conn, SoupMessage *msg,
 850                          const char *auth_type, const char *auth_realm,
 851                          char **username, char **password, gpointer session)
 852 {
 853         g_signal_emit (session, signals[AUTHENTICATE], 0,
 854                        msg, auth_type, auth_realm, username, password);
 855 }
 856
 857 static void
 858 connection_reauthenticate (SoupConnection *conn, SoupMessage *msg,
 859                            const char *auth_type, const char *auth_realm,
 860                            char **username, char **password,
 861                            gpointer user_data)
 862 {
 863         g_signal_emit (conn, signals[REAUTHENTICATE], 0,
 864                        msg, auth_type, auth_realm, username, password);
 865 }
 866
 867
 868 static void
 869 authorize_handler (SoupMessage *msg, gpointer user_data)
 870 {
 871         SoupSession *session = user_data;
 872         const GSList *headers;
 873         gboolean proxy;
 874
 875         if (msg->status_code == SOUP_STATUS_PROXY_AUTHENTICATION_REQUIRED) {
 876                 headers = soup_message_get_header_list (msg->response_headers,
 877                                                         "Proxy-Authenticate");
 878                 proxy = TRUE;
 879         } else {
 880                 headers = soup_message_get_header_list (msg->response_headers,
 881                                                         "WWW-Authenticate");
 882                 proxy = FALSE;
 883         }
 884         if (!headers)
 885                 return;
 886
 887         if (update_auth_internal (session, msg, headers, proxy, TRUE))
 888                 soup_session_requeue_message (session, msg);
 889 }
 890
 891 static void
 892 redirect_handler (SoupMessage *msg, gpointer user_data)
 893 {
 894         SoupSession *session = user_data;
 895         const char *new_loc;
 896         SoupUri *new_uri;
 897
 898         new_loc = soup_message_get_header (msg->response_headers, "Location");
 899         if (!new_loc)
 900                 return;
 901
 902         /* Location is supposed to be an absolute URI, but some sites
 903          * are lame, so we use soup_uri_new_with_base().
 904          */
 905         new_uri = soup_uri_new_with_base (soup_message_get_uri (msg), new_loc);
 906         if (!new_uri) {
 907                 soup_message_set_status_full (msg,
 908                                               SOUP_STATUS_MALFORMED,
 909                                               "Invalid Redirect URL");
 910                 return;
 911         }
 912
 913         soup_message_set_uri (msg, new_uri);
 914         soup_uri_free (new_uri);
 915
 916         soup_session_requeue_message (session, msg);
 917 }
 918
 919 static void
 920 add_auth (SoupSession *session, SoupMessage *msg, gboolean proxy)
 921 {
 922         const char *header = proxy ? "Proxy-Authorization" : "Authorization";
 923         SoupAuth *auth;
 924         char *token;
 925
 926         auth = lookup_auth (session, msg, proxy);
 927         if (!auth)
 928                 return;
 929         if (!soup_auth_is_authenticated (auth) &&
 930             !authenticate_auth (session, auth, msg, FALSE, proxy))
 931                 return;
 932
 933         token = soup_auth_get_authorization (auth, msg);
 934         if (token) {
 935                 soup_message_remove_header (msg->request_headers, header);
 936                 soup_message_add_header (msg->request_headers, header, token);
 937                 g_free (token);
 938         }
 939 }
 940
 941 static void
 942 setup_message (SoupMessageFilter *filter, SoupMessage *msg)
 943 {
 944         SoupSession *session = SOUP_SESSION (filter);
 945         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 946         GSList *f;
 947
 948         for (f = priv->filters; f; f = f->next) {
 949                 filter = f->data;
 950                 soup_message_filter_setup_message (filter, msg);
 951         }
 952
 953         add_auth (session, msg, FALSE);
 954         soup_message_add_status_code_handler (
 955                 msg, SOUP_STATUS_UNAUTHORIZED,
 956                 SOUP_HANDLER_POST_BODY,
 957                 authorize_handler, session);
 958
 959         if (priv->proxy_uri) {
 960                 add_auth (session, msg, TRUE);
 961                 soup_message_add_status_code_handler  (
 962                         msg, SOUP_STATUS_PROXY_UNAUTHORIZED,
 963                         SOUP_HANDLER_POST_BODY,
 964                         authorize_handler, session);
 965         }
 966 }
 967
 968 static void
 969 find_oldest_connection (gpointer key, gpointer host, gpointer data)
 970 {
 971         SoupConnection *conn = key, **oldest = data;
 972
 973         /* Don't prune a connection that is currently in use, or
 974          * hasn't been used yet.
 975          */
 976         if (soup_connection_is_in_use (conn) ||
 977             soup_connection_last_used (conn) == 0)
 978                 return;
 979
 980         if (!*oldest || (soup_connection_last_used (conn) <
 981                          soup_connection_last_used (*oldest)))
 982                 *oldest = conn;
 983 }
 984
 985 /**
 986  * soup_session_try_prune_connection:
 987  * @session: a #SoupSession
 988  *
 989  * Finds the least-recently-used idle connection in @session and closes
 990  * it.
 991  *
 992  * Return value: %TRUE if a connection was closed, %FALSE if there are
 993  * no idle connections.
 994  **/
 995 gboolean
 996 soup_session_try_prune_connection (SoupSession *session)
 997 {
 998         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
 999         SoupConnection *oldest = NULL;
1000
1001         g_mutex_lock (priv->host_lock);
1002         g_hash_table_foreach (priv->conns, find_oldest_connection,
1003                               &oldest);
1004         if (oldest) {
1005                 /* Ref the connection before unlocking the mutex in
1006                  * case someone else tries to prune it too.
1007                  */
1008                 g_object_ref (oldest);
1009                 g_mutex_unlock (priv->host_lock);
1010                 soup_connection_disconnect (oldest);
1011                 g_object_unref (oldest);
1012                 return TRUE;
1013         } else {
1014                 g_mutex_unlock (priv->host_lock);
1015                 return FALSE;
1016         }
1017 }
1018
1019 static void
1020 connection_disconnected (SoupConnection *conn, gpointer user_data)
1021 {
1022         SoupSession *session = user_data;
1023         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
1024         SoupSessionHost *host;
1025
1026         g_mutex_lock (priv->host_lock);
1027
1028         host = g_hash_table_lookup (priv->conns, conn);
1029         if (host) {
1030                 g_hash_table_remove (priv->conns, conn);
1031                 host->connections = g_slist_remove (host->connections, conn);
1032                 host->num_conns--;
1033         }
1034
1035         g_signal_handlers_disconnect_by_func (conn, connection_disconnected, session);
1036         priv->num_conns--;
1037
1038         g_mutex_unlock (priv->host_lock);
1039         g_object_unref (conn);
1040 }
1041
1042 static void
1043 connect_result (SoupConnection *conn, guint status, gpointer user_data)
1044 {
1045         SoupSession *session = user_data;
1046         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
1047         SoupSessionHost *host;
1048         SoupMessageQueueIter iter;
1049         SoupMessage *msg;
1050
1051         g_mutex_lock (priv->host_lock);
1052
1053         host = g_hash_table_lookup (priv->conns, conn);
1054         if (!host) {
1055                 g_mutex_unlock (priv->host_lock);
1056                 return;
1057         }
1058
1059         if (status == SOUP_STATUS_OK) {
1060                 soup_connection_reserve (conn);
1061                 host->connections = g_slist_prepend (host->connections, conn);
1062                 g_mutex_unlock (priv->host_lock);
1063                 return;
1064         }
1065
1066         /* The connection failed. */
1067         g_mutex_unlock (priv->host_lock);
1068         connection_disconnected (conn, session);
1069
1070         if (host->connections) {
1071                 /* Something went wrong this time, but we have at
1072                  * least one open connection to this host. So just
1073                  * leave the message in the queue so it can use that
1074                  * connection once it's free.
1075                  */
1076                 return;
1077         }
1078
1079         /* There are two possibilities: either status is
1080          * SOUP_STATUS_TRY_AGAIN, in which case the session implementation
1081          * will create a new connection (and all we need to do here
1082          * is downgrade the message from CONNECTING to QUEUED); or
1083          * status is something else, probably CANT_CONNECT or
1084          * CANT_RESOLVE or the like, in which case we need to cancel
1085          * any messages waiting for this host, since they're out
1086          * of luck.
1087          */
1088         for (msg = soup_message_queue_first (session->queue, &iter); msg; msg = soup_message_queue_next (session->queue, &iter)) {
1089                 if (get_host_for_message (session, msg) == host) {
1090                         if (status == SOUP_STATUS_TRY_AGAIN) {
1091                                 if (msg->status == SOUP_MESSAGE_STATUS_CONNECTING)
1092                                         msg->status = SOUP_MESSAGE_STATUS_QUEUED;
1093                         } else {
1094                                 soup_message_set_status (msg, status);
1095                                 soup_session_cancel_message (session, msg);
1096                         }
1097                 }
1098         }
1099 }
1100
1101 /**
1102  * soup_session_get_connection:
1103  * @session: a #SoupSession
1104  * @msg: a #SoupMessage
1105  * @try_pruning: on return, whether or not to try pruning a connection
1106  * @is_new: on return, %TRUE if the returned connection is new and not
1107  * yet connected
1108  *
1109  * Tries to find or create a connection for @msg; this is an internal
1110  * method for #SoupSession subclasses.
1111  *
1112  * If there is an idle connection to the relevant host available, then
1113  * that connection will be returned (with *@is_new set to %FALSE). The
1114  * connection will be marked "reserved", so the caller must call
1115  * soup_connection_release() if it ends up not using the connection
1116  * right away.
1117  *
1118  * If there is no idle connection available, but it is possible to
1119  * create a new connection, then one will be created and returned,
1120  * with *@is_new set to %TRUE. The caller MUST then call
1121  * soup_connection_connect_sync() or soup_connection_connect_async()
1122  * to connect it. If the connection attempt succeeds, the connection
1123  * will be marked "reserved" and added to @session's connection pool
1124  * once it connects. If the connection attempt fails, the connection
1125  * will be unreffed.
1126  *
1127  * If no connection is available and a new connection cannot be made,
1128  * soup_session_get_connection() will return %NULL. If @session has
1129  * the maximum number of open connections open, but does not have the
1130  * maximum number of per-host connections open to the relevant host,
1131  * then *@try_pruning will be set to %TRUE. In this case, the caller
1132  * can call soup_session_try_prune_connection() to close an idle
1133  * connection, and then try soup_session_get_connection() again. (If
1134  * calling soup_session_try_prune_connection() wouldn't help, then
1135  * *@try_pruning is left untouched; it is NOT set to %FALSE.)
1136  *
1137  * Return value: a #SoupConnection, or %NULL
1138  **/
1139 SoupConnection *
1140 soup_session_get_connection (SoupSession *session, SoupMessage *msg,
1141                              gboolean *try_pruning, gboolean *is_new)
1142 {
1143         SoupSessionPrivate *priv = SOUP_SESSION_GET_PRIVATE (session);
1144         SoupConnection *conn;
1145         SoupSessionHost *host;
1146         GSList *conns;
1147
1148         g_mutex_lock (priv->host_lock);
1149
1150         host = get_host_for_message (session, msg);
1151         for (conns = host->connections; conns; conns = conns->next) {
1152                 if (!soup_connection_is_in_use (conns->data)) {
1153                         soup_connection_reserve (conns->data);
1154                         g_mutex_unlock (priv->host_lock);
1155                         *is_new = FALSE;
1156                         return conns->data;
1157                 }
1158         }
1159
1160         if (msg->status == SOUP_MESSAGE_STATUS_CONNECTING) {
1161                 /* We already started a connection for this
1162                  * message, so don't start another one.
1163                  */
1164                 g_mutex_unlock (priv->host_lock);
1165                 return NULL;
1166         }
1167
1168         if (host->num_conns >= priv->max_conns_per_host) {
1169                 g_mutex_unlock (priv->host_lock);
1170                 return NULL;
1171         }
1172
1173         if (priv->num_conns >= priv->max_conns) {
1174                 *try_pruning = TRUE;
1175                 g_mutex_unlock (priv->host_lock);
1176                 return NULL;
1177         }
1178
1179         /* Make sure priv->proxy_host gets set now while
1180          * we have the host_lock.
1181          */
1182         if (priv->proxy_uri)
1183                 get_proxy_host (session);
1184
1185         conn = g_object_new (
1186                 (priv->use_ntlm ?
1187                  SOUP_TYPE_CONNECTION_NTLM : SOUP_TYPE_CONNECTION),
1188                 SOUP_CONNECTION_ORIGIN_URI, host->root_uri,
1189                 SOUP_CONNECTION_PROXY_URI, priv->proxy_uri,
1190                 SOUP_CONNECTION_SSL_CREDENTIALS, priv->ssl_creds,
1191                 SOUP_CONNECTION_MESSAGE_FILTER, session,
1192                 SOUP_CONNECTION_ASYNC_CONTEXT, priv->async_context,
1193                 SOUP_CONNECTION_TIMEOUT, priv->timeout,
1194                 NULL);
1195         g_signal_connect (conn, "connect_result",
1196                           G_CALLBACK (connect_result),
1197                           session);
1198         g_signal_connect (conn, "disconnected",
1199                           G_CALLBACK (connection_disconnected),
1200                           session);
1201         g_signal_connect (conn, "authenticate",
1202                           G_CALLBACK (connection_authenticate),
1203                           session);
1204         g_signal_connect (conn, "reauthenticate",
1205                           G_CALLBACK (connection_reauthenticate),
1206                           session);
1207
1208         g_hash_table_insert (priv->conns, conn, host);
1209
1210         /* We increment the connection counts so it counts against the
1211          * totals, but we don't add it to the host's connection list
1212          * yet, since it's not ready for use.
1213          */
1214         priv->num_conns++;
1215         host->num_conns++;
1216
1217         /* Mark the request as connecting, so we don't try to open
1218          * another new connection for it while waiting for this one.
1219          */
1220         msg->status = SOUP_MESSAGE_STATUS_CONNECTING;
1221
1222         g_mutex_unlock (priv->host_lock);
1223         *is_new = TRUE;
1224         return conn;
1225 }
1226
1227 static void
1228 message_finished (SoupMessage *msg, gpointer user_data)
1229 {
1230         SoupSession *session = user_data;
1231
1232         if (!SOUP_MESSAGE_IS_STARTING (msg)) {
1233                 soup_message_queue_remove_message (session->queue, msg);
1234                 g_signal_handlers_disconnect_by_func (msg, message_finished, session);
1235         }
1236 }
1237
1238 static void
1239 queue_message (SoupSession *session, SoupMessage *msg,
1240                SoupMessageCallbackFn callback, gpointer user_data)
1241 {
1242         g_signal_connect_after (msg, "finished",
1243                                 G_CALLBACK (message_finished), session);
1244
1245         if (!(soup_message_get_flags (msg) & SOUP_MESSAGE_NO_REDIRECT)) {
1246                 soup_message_add_status_class_handler (
1247                         msg, SOUP_STATUS_CLASS_REDIRECT,
1248                         SOUP_HANDLER_POST_BODY,
1249                         redirect_handler, session);
1250         }
1251
1252         msg->status = SOUP_MESSAGE_STATUS_QUEUED;
1253         soup_message_queue_append (session->queue, msg);
1254 }
1255
1256 /**
1257  * soup_session_queue_message:
1258  * @session: a #SoupSession
1259  * @msg: the message to queue
1260  * @callback: a #SoupMessageCallbackFn which will be called after the
1261  * message completes or when an unrecoverable error occurs.
1262  * @user_data: a pointer passed to @callback.
1263  *
1264  * Queues the message @msg for sending. All messages are processed
1265  * while the glib main loop runs. If @msg has been processed before,
1266  * any resources related to the time it was last sent are freed.
1267  *
1268  * Upon message completion, the callback specified in @callback will
1269  * be invoked. If after returning from this callback the message has
1270  * not been requeued, @msg will be unreffed.
1271  */
1272 void
1273 soup_session_queue_message (SoupSession *session, SoupMessage *msg,
1274                             SoupMessageCallbackFn callback, gpointer user_data)
1275 {
1276         g_return_if_fail (SOUP_IS_SESSION (session));
1277         g_return_if_fail (SOUP_IS_MESSAGE (msg));
1278
1279         SOUP_SESSION_GET_CLASS (session)->queue_message (session, msg,
1280                                                          callback, user_data);
1281 }
1282
1283 static void
1284 requeue_message (SoupSession *session, SoupMessage *msg)
1285 {
1286         msg->status = SOUP_MESSAGE_STATUS_QUEUED;
1287 }
1288
1289 /**
1290  * soup_session_requeue_message:
1291  * @session: a #SoupSession
1292  * @msg: the message to requeue
1293  *
1294  * This causes @msg to be placed back on the queue to be attempted
1295  * again.
1296  **/
1297 void
1298 soup_session_requeue_message (SoupSession *session, SoupMessage *msg)
1299 {
1300         g_return_if_fail (SOUP_IS_SESSION (session));
1301         g_return_if_fail (SOUP_IS_MESSAGE (msg));
1302
1303         SOUP_SESSION_GET_CLASS (session)->requeue_message (session, msg);
1304 }
1305
1306
1307 /**
1308  * soup_session_send_message:
1309  * @session: a #SoupSession
1310  * @msg: the message to send
1311  *
1312  * Synchronously send @msg. This call will not return until the
1313  * transfer is finished successfully or there is an unrecoverable
1314  * error.
1315  *
1316  * @msg is not freed upon return.
1317  *
1318  * Return value: the HTTP status code of the response
1319  */
1320 guint
1321 soup_session_send_message (SoupSession *session, SoupMessage *msg)
1322 {
1323         g_return_val_if_fail (SOUP_IS_SESSION (session), SOUP_STATUS_MALFORMED);
1324         g_return_val_if_fail (SOUP_IS_MESSAGE (msg), SOUP_STATUS_MALFORMED);
1325
1326         return SOUP_SESSION_GET_CLASS (session)->send_message (session, msg);
1327 }
1328
1329
1330 static void
1331 cancel_message (SoupSession *session, SoupMessage *msg)
1332 {
1333         soup_message_queue_remove_message (session->queue, msg);
1334         soup_message_finished (msg);
1335 }
1336
1337 /**
1338  * soup_session_cancel_message:
1339  * @session: a #SoupSession
1340  * @msg: the message to cancel
1341  *
1342  * Causes @session to immediately finish processing @msg. You should
1343  * set a status code on @msg with soup_message_set_status() before
1344  * calling this function.
1345  **/
1346 void
1347 soup_session_cancel_message (SoupSession *session, SoupMessage *msg)
1348 {
1349         g_return_if_fail (SOUP_IS_SESSION (session));
1350         g_return_if_fail (SOUP_IS_MESSAGE (msg));
1351
1352         SOUP_SESSION_GET_CLASS (session)->cancel_message (session, msg);
1353 }
1354
1355 /**
1356  * soup_session_abort:
1357  * @session: the session
1358  *
1359  * Cancels all pending requests in @session.
1360  **/
1361 void
1362 soup_session_abort (SoupSession *session)
1363 {
1364         SoupMessageQueueIter iter;
1365         SoupMessage *msg;
1366
1367         g_return_if_fail (SOUP_IS_SESSION (session));
1368
1369         for (msg = soup_message_queue_first (session->queue, &iter); msg; msg = soup_message_queue_next (session->queue, &iter)) {
1370                 soup_message_set_status (msg, SOUP_STATUS_CANCELLED);
1371                 soup_session_cancel_message (session, msg);
1372         }
1373 }