dlls/webservices/listener.c

   1 /*
   2  * Copyright 2017 Hans Leidekker for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include <stdarg.h>
  20
  21 #include "windef.h"
  22 #include "winbase.h"
  23 #include "webservices.h"
  24
  25 #include "wine/debug.h"
  26 #include "wine/list.h"
  27 #include "wine/unicode.h"
  28 #include "webservices_private.h"
  29 #include "sock.h"
  30
  31 WINE_DEFAULT_DEBUG_CHANNEL(webservices);
  32
  33 static BOOL winsock_loaded;
  34
  35 static BOOL WINAPI winsock_startup( INIT_ONCE *once, void *param, void **ctx )
  36 {
  37     int ret;
  38     WSADATA data;
  39     if (!(ret = WSAStartup( MAKEWORD(1,1), &data ))) winsock_loaded = TRUE;
  40     else ERR( "WSAStartup failed: %d\n", ret );
  41     return TRUE;
  42 }
  43
  44 void winsock_init(void)
  45 {
  46     static INIT_ONCE once = INIT_ONCE_STATIC_INIT;
  47     InitOnceExecuteOnce( &once, winsock_startup, NULL, NULL );
  48 }
  49
  50 static const struct prop_desc listener_props[] =
  51 {
  52     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_LISTEN_BACKLOG */
  53     { sizeof(WS_IP_VERSION), FALSE },                       /* WS_LISTENER_PROPERTY_IP_VERSION */
  54     { sizeof(WS_LISTENER_STATE), TRUE },                    /* WS_LISTENER_PROPERTY_STATE */
  55     { sizeof(WS_CALLBACK_MODEL), FALSE },                   /* WS_LISTENER_PROPERTY_ASYNC_CALLBACK_MODEL */
  56     { sizeof(WS_CHANNEL_TYPE), TRUE },                      /* WS_LISTENER_PROPERTY_CHANNEL_TYPE */
  57     { sizeof(WS_CHANNEL_BINDING), TRUE },                   /* WS_LISTENER_PROPERTY_CHANNEL_BINDING */
  58     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CONNECT_TIMEOUT */
  59     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_IS_MULTICAST */
  60     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_MULTICAST_INTERFACES */
  61     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_MULTICAST_LOOPBACK */
  62     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CLOSE_TIMEOUT */
  63     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TO_HEADER_MATCHING_OPTIONS */
  64     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TRANSPORT_URL_MATCHING_OPTIONS */
  65     { sizeof(WS_CUSTOM_LISTENER_CALLBACKS), FALSE },        /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_CALLBACKS */
  66     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_PARAMETERS */
  67     { sizeof(void *), TRUE },                               /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_INSTANCE */
  68     { sizeof(WS_DISALLOWED_USER_AGENT_SUBSTRINGS), FALSE }  /* WS_LISTENER_PROPERTY_DISALLOWED_USER_AGENT */
  69 };
  70
  71 struct listener
  72 {
  73     ULONG                   magic;
  74     CRITICAL_SECTION        cs;
  75     WS_CHANNEL_TYPE         type;
  76     WS_CHANNEL_BINDING      binding;
  77     WS_LISTENER_STATE       state;
  78     HANDLE                  wait;
  79     HANDLE                  cancel;
  80     WS_CHANNEL             *channel;
  81     union
  82     {
  83         struct
  84         {
  85             SOCKET socket;
  86         } tcp;
  87         struct
  88         {
  89             SOCKET socket;
  90         } udp;
  91     } u;
  92     ULONG                   prop_count;
  93     struct prop             prop[sizeof(listener_props)/sizeof(listener_props[0])];
  94 };
  95
  96 #define LISTENER_MAGIC (('L' << 24) | ('I' << 16) | ('S' << 8) | 'T')
  97
  98 static struct listener *alloc_listener(void)
  99 {
 100     static const ULONG count = sizeof(listener_props)/sizeof(listener_props[0]);
 101     struct listener *ret;
 102     ULONG size = sizeof(*ret) + prop_size( listener_props, count );
 103
 104     if (!(ret = heap_alloc_zero( size ))) return NULL;
 105
 106     ret->magic = LISTENER_MAGIC;
 107     if (!(ret->wait = CreateEventW( NULL, FALSE, FALSE, NULL )))
 108     {
 109         heap_free( ret );
 110         return NULL;
 111     }
 112     if (!(ret->cancel = CreateEventW( NULL, FALSE, FALSE, NULL )))
 113     {
 114         CloseHandle( ret->wait );
 115         heap_free( ret );
 116         return NULL;
 117     }
 118     InitializeCriticalSection( &ret->cs );
 119     ret->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": listener.cs");
 120
 121     prop_init( listener_props, count, ret->prop, &ret[1] );
 122     ret->prop_count = count;
 123     return ret;
 124 }
 125
 126 static void reset_listener( struct listener *listener )
 127 {
 128     listener->state = WS_LISTENER_STATE_CREATED;
 129     SetEvent( listener->cancel );
 130     listener->channel = NULL;
 131
 132     switch (listener->binding)
 133     {
 134     case WS_TCP_CHANNEL_BINDING:
 135         closesocket( listener->u.tcp.socket );
 136         listener->u.tcp.socket = -1;
 137         break;
 138
 139     case WS_UDP_CHANNEL_BINDING:
 140         closesocket( listener->u.udp.socket );
 141         listener->u.udp.socket = -1;
 142         break;
 143
 144     default: break;
 145     }
 146 }
 147
 148 static void free_listener( struct listener *listener )
 149 {
 150     reset_listener( listener );
 151
 152     CloseHandle( listener->wait );
 153     CloseHandle( listener->cancel );
 154
 155     listener->cs.DebugInfo->Spare[0] = 0;
 156     DeleteCriticalSection( &listener->cs );
 157     heap_free( listener );
 158 }
 159
 160 static HRESULT create_listener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 161                                 const WS_LISTENER_PROPERTY *properties, ULONG count, struct listener **ret )
 162 {
 163     struct listener *listener;
 164     HRESULT hr;
 165     ULONG i;
 166
 167     if (!(listener = alloc_listener())) return E_OUTOFMEMORY;
 168
 169     for (i = 0; i < count; i++)
 170     {
 171         hr = prop_set( listener->prop, listener->prop_count, properties[i].id, properties[i].value,
 172                        properties[i].valueSize );
 173         if (hr != S_OK)
 174         {
 175             free_listener( listener );
 176             return hr;
 177         }
 178     }
 179
 180     listener->type    = type;
 181     listener->binding = binding;
 182
 183     switch (listener->binding)
 184     {
 185     case WS_TCP_CHANNEL_BINDING:
 186         listener->u.tcp.socket = -1;
 187         break;
 188
 189     case WS_UDP_CHANNEL_BINDING:
 190         listener->u.udp.socket = -1;
 191         break;
 192
 193     default: break;
 194     }
 195
 196     *ret = listener;
 197     return S_OK;
 198 }
 199
 200 /**************************************************************************
 201  *          WsCreateListener            [webservices.@]
 202  */
 203 HRESULT WINAPI WsCreateListener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 204                                  const WS_LISTENER_PROPERTY *properties, ULONG count,
 205                                  const WS_SECURITY_DESCRIPTION *desc, WS_LISTENER **handle,
 206                                  WS_ERROR *error )
 207 {
 208     struct listener *listener;
 209     HRESULT hr;
 210
 211     TRACE( "%u %u %p %u %p %p %p\n", type, binding, properties, count, desc, handle, error );
 212     if (error) FIXME( "ignoring error parameter\n" );
 213     if (desc) FIXME( "ignoring security description\n" );
 214
 215     if (!handle) return E_INVALIDARG;
 216
 217     if (type != WS_CHANNEL_TYPE_DUPLEX_SESSION && type != WS_CHANNEL_TYPE_DUPLEX)
 218     {
 219         FIXME( "channel type %u not implemented\n", type );
 220         return E_NOTIMPL;
 221     }
 222     if (binding != WS_TCP_CHANNEL_BINDING && binding != WS_UDP_CHANNEL_BINDING)
 223     {
 224         FIXME( "channel binding %u not implemented\n", binding );
 225         return E_NOTIMPL;
 226     }
 227
 228     if ((hr = create_listener( type, binding, properties, count, &listener )) != S_OK) return hr;
 229
 230     TRACE( "created %p\n", listener );
 231     *handle = (WS_LISTENER *)listener;
 232     return S_OK;
 233 }
 234
 235 /**************************************************************************
 236  *          WsFreeListener              [webservices.@]
 237  */
 238 void WINAPI WsFreeListener( WS_LISTENER *handle )
 239 {
 240     struct listener *listener = (struct listener *)handle;
 241
 242     TRACE( "%p\n", handle );
 243
 244     if (!listener) return;
 245
 246     EnterCriticalSection( &listener->cs );
 247
 248     if (listener->magic != LISTENER_MAGIC)
 249     {
 250         LeaveCriticalSection( &listener->cs );
 251         return;
 252     }
 253
 254     listener->magic = 0;
 255
 256     LeaveCriticalSection( &listener->cs );
 257     free_listener( listener );
 258 }
 259
 260 HRESULT resolve_hostname( const WCHAR *host, USHORT port, struct sockaddr *addr, int *addr_len, int flags )
 261 {
 262     static const WCHAR fmtW[] = {'%','u',0};
 263     WCHAR service[6];
 264     ADDRINFOW hints, *res, *info;
 265     HRESULT hr = WS_E_ADDRESS_NOT_AVAILABLE;
 266
 267     memset( &hints, 0, sizeof(hints) );
 268     hints.ai_flags  = flags;
 269     hints.ai_family = AF_INET;
 270
 271     *addr_len = 0;
 272     sprintfW( service, fmtW, port );
 273     if (GetAddrInfoW( host, service, &hints, &res )) return HRESULT_FROM_WIN32( WSAGetLastError() );
 274
 275     info = res;
 276     while (info && info->ai_family != AF_INET) info = info->ai_next;
 277     if (info)
 278     {
 279         memcpy( addr, info->ai_addr, info->ai_addrlen );
 280         *addr_len = info->ai_addrlen;
 281         hr = S_OK;
 282     }
 283
 284     FreeAddrInfoW( res );
 285     return hr;
 286 }
 287
 288 HRESULT parse_url( const WS_STRING *str, WS_URL_SCHEME_TYPE *scheme, WCHAR **host, USHORT *port )
 289 {
 290     WS_HEAP *heap;
 291     WS_NETTCP_URL *url;
 292     HRESULT hr;
 293
 294     if ((hr = WsCreateHeap( 1 << 8, 0, NULL, 0, &heap, NULL )) != S_OK) return hr;
 295     if ((hr = WsDecodeUrl( str, 0, heap, (WS_URL **)&url, NULL )) != S_OK)
 296     {
 297         WsFreeHeap( heap );
 298         return hr;
 299     }
 300
 301     if (url->host.length == 1 && (url->host.chars[0] == '+' || url->host.chars[0] == '*')) *host = NULL;
 302     else
 303     {
 304         if (!(*host = heap_alloc( (url->host.length + 1) * sizeof(WCHAR) )))
 305         {
 306             WsFreeHeap( heap );
 307             return E_OUTOFMEMORY;
 308         }
 309         memcpy( *host, url->host.chars, url->host.length * sizeof(WCHAR) );
 310         (*host)[url->host.length] = 0;
 311     }
 312     *scheme = url->url.scheme;
 313     *port = url->port;
 314
 315     WsFreeHeap( heap );
 316     return hr;
 317 }
 318
 319 static HRESULT open_listener_tcp( struct listener *listener, const WS_STRING *url )
 320 {
 321     struct sockaddr_storage storage;
 322     struct sockaddr *addr = (struct sockaddr *)&storage;
 323     int addr_len, on = 1;
 324     WS_URL_SCHEME_TYPE scheme;
 325     WCHAR *host;
 326     USHORT port;
 327     HRESULT hr;
 328
 329     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 330     if (scheme != WS_URL_NETTCP_SCHEME_TYPE)
 331     {
 332         heap_free( host );
 333         return WS_E_INVALID_ENDPOINT_URL;
 334     }
 335
 336     winsock_init();
 337
 338     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 339     heap_free( host );
 340     if (hr != S_OK) return hr;
 341
 342     if ((listener->u.tcp.socket = socket( addr->sa_family, SOCK_STREAM, 0 )) == -1)
 343         return HRESULT_FROM_WIN32( WSAGetLastError() );
 344
 345     if (setsockopt( listener->u.tcp.socket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on) ) < 0)
 346     {
 347         closesocket( listener->u.tcp.socket );
 348         listener->u.tcp.socket = -1;
 349         return HRESULT_FROM_WIN32( WSAGetLastError() );
 350     }
 351
 352     if (bind( listener->u.tcp.socket, addr, addr_len ) < 0)
 353     {
 354         closesocket( listener->u.tcp.socket );
 355         listener->u.tcp.socket = -1;
 356         return HRESULT_FROM_WIN32( WSAGetLastError() );
 357     }
 358
 359     if (listen( listener->u.tcp.socket, 0 ) < 0)
 360     {
 361         closesocket( listener->u.tcp.socket );
 362         listener->u.tcp.socket = -1;
 363         return HRESULT_FROM_WIN32( WSAGetLastError() );
 364     }
 365
 366     listener->state = WS_LISTENER_STATE_OPEN;
 367     return S_OK;
 368 }
 369
 370 static HRESULT open_listener_udp( struct listener *listener, const WS_STRING *url )
 371 {
 372     struct sockaddr_storage storage;
 373     struct sockaddr *addr = (struct sockaddr *)&storage;
 374     int addr_len;
 375     WS_URL_SCHEME_TYPE scheme;
 376     WCHAR *host;
 377     USHORT port;
 378     HRESULT hr;
 379
 380     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 381     if (scheme != WS_URL_SOAPUDP_SCHEME_TYPE)
 382     {
 383         heap_free( host );
 384         return WS_E_INVALID_ENDPOINT_URL;
 385     }
 386
 387     winsock_init();
 388
 389     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 390     heap_free( host );
 391     if (hr != S_OK) return hr;
 392
 393     if ((listener->u.udp.socket = socket( addr->sa_family, SOCK_DGRAM, 0 )) == -1)
 394         return HRESULT_FROM_WIN32( WSAGetLastError() );
 395
 396     if (bind( listener->u.udp.socket, addr, addr_len ) < 0)
 397     {
 398         closesocket( listener->u.udp.socket );
 399         listener->u.udp.socket = -1;
 400         return HRESULT_FROM_WIN32( WSAGetLastError() );
 401     }
 402
 403     listener->state = WS_LISTENER_STATE_OPEN;
 404     return S_OK;
 405 }
 406
 407 static HRESULT open_listener( struct listener *listener, const WS_STRING *url )
 408 {
 409     switch (listener->binding)
 410     {
 411     case WS_TCP_CHANNEL_BINDING:
 412         return open_listener_tcp( listener, url );
 413
 414     case WS_UDP_CHANNEL_BINDING:
 415         return open_listener_udp( listener, url );
 416
 417     default:
 418         ERR( "unhandled binding %u\n", listener->binding );
 419         return E_NOTIMPL;
 420     }
 421 }
 422
 423 /**************************************************************************
 424  *          WsOpenListener              [webservices.@]
 425  */
 426 HRESULT WINAPI WsOpenListener( WS_LISTENER *handle, WS_STRING *url, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 427 {
 428     struct listener *listener = (struct listener *)handle;
 429     HRESULT hr;
 430
 431     TRACE( "%p %s %p %p\n", handle, url ? debugstr_wn(url->chars, url->length) : "null", ctx, error );
 432     if (error) FIXME( "ignoring error parameter\n" );
 433     if (ctx) FIXME( "ignoring ctx parameter\n" );
 434
 435     if (!listener || !url) return E_INVALIDARG;
 436
 437     EnterCriticalSection( &listener->cs );
 438
 439     if (listener->magic != LISTENER_MAGIC)
 440     {
 441         LeaveCriticalSection( &listener->cs );
 442         return E_INVALIDARG;
 443     }
 444
 445     if (listener->state != WS_LISTENER_STATE_CREATED)
 446     {
 447         LeaveCriticalSection( &listener->cs );
 448         return WS_E_INVALID_OPERATION;
 449     }
 450
 451     hr = open_listener( listener, url );
 452
 453     LeaveCriticalSection( &listener->cs );
 454     return hr;
 455 }
 456
 457 static void close_listener( struct listener *listener )
 458 {
 459     reset_listener( listener );
 460     listener->state = WS_LISTENER_STATE_CLOSED;
 461 }
 462
 463 /**************************************************************************
 464  *          WsCloseListener             [webservices.@]
 465  */
 466 HRESULT WINAPI WsCloseListener( WS_LISTENER *handle, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 467 {
 468     struct listener *listener = (struct listener *)handle;
 469
 470     TRACE( "%p %p %p\n", handle, ctx, error );
 471     if (error) FIXME( "ignoring error parameter\n" );
 472     if (ctx) FIXME( "ignoring ctx parameter\n" );
 473
 474     if (!listener) return E_INVALIDARG;
 475
 476     EnterCriticalSection( &listener->cs );
 477
 478     if (listener->magic != LISTENER_MAGIC)
 479     {
 480         LeaveCriticalSection( &listener->cs );
 481         return E_INVALIDARG;
 482     }
 483
 484     close_listener( listener );
 485
 486     LeaveCriticalSection( &listener->cs );
 487     return S_OK;
 488 }
 489
 490 /**************************************************************************
 491  *          WsResetListener             [webservices.@]
 492  */
 493 HRESULT WINAPI WsResetListener( WS_LISTENER *handle, WS_ERROR *error )
 494 {
 495     struct listener *listener = (struct listener *)handle;
 496
 497     TRACE( "%p %p\n", handle, error );
 498     if (error) FIXME( "ignoring error parameter\n" );
 499
 500     if (!listener) return E_INVALIDARG;
 501
 502     EnterCriticalSection( &listener->cs );
 503
 504     if (listener->magic != LISTENER_MAGIC)
 505     {
 506         LeaveCriticalSection( &listener->cs );
 507         return E_INVALIDARG;
 508     }
 509
 510     if (listener->state != WS_LISTENER_STATE_CREATED && listener->state != WS_LISTENER_STATE_CLOSED)
 511     {
 512         LeaveCriticalSection( &listener->cs );
 513         return WS_E_INVALID_OPERATION;
 514     }
 515
 516     reset_listener( listener );
 517
 518     LeaveCriticalSection( &listener->cs );
 519     return S_OK;
 520 }
 521
 522 /**************************************************************************
 523  *          WsGetListenerProperty               [webservices.@]
 524  */
 525 HRESULT WINAPI WsGetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, void *buf,
 526                                       ULONG size, WS_ERROR *error )
 527 {
 528     struct listener *listener = (struct listener *)handle;
 529     HRESULT hr = S_OK;
 530
 531     TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
 532     if (error) FIXME( "ignoring error parameter\n" );
 533
 534     if (!listener) return E_INVALIDARG;
 535
 536     EnterCriticalSection( &listener->cs );
 537
 538     if (listener->magic != LISTENER_MAGIC)
 539     {
 540         LeaveCriticalSection( &listener->cs );
 541         return E_INVALIDARG;
 542     }
 543
 544     switch (id)
 545     {
 546     case WS_LISTENER_PROPERTY_STATE:
 547         if (!buf || size != sizeof(listener->state)) hr = E_INVALIDARG;
 548         else *(WS_LISTENER_STATE *)buf = listener->state;
 549         break;
 550
 551     case WS_LISTENER_PROPERTY_CHANNEL_TYPE:
 552         if (!buf || size != sizeof(listener->type)) hr = E_INVALIDARG;
 553         else *(WS_CHANNEL_TYPE *)buf = listener->type;
 554         break;
 555
 556     case WS_LISTENER_PROPERTY_CHANNEL_BINDING:
 557         if (!buf || size != sizeof(listener->binding)) hr = E_INVALIDARG;
 558         else *(WS_CHANNEL_BINDING *)buf = listener->binding;
 559         break;
 560
 561     default:
 562         hr = prop_get( listener->prop, listener->prop_count, id, buf, size );
 563     }
 564
 565     LeaveCriticalSection( &listener->cs );
 566     return hr;
 567 }
 568
 569 /**************************************************************************
 570  *          WsSetListenerProperty               [webservices.@]
 571  */
 572 HRESULT WINAPI WsSetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, const void *value,
 573                                       ULONG size, WS_ERROR *error )
 574 {
 575     struct listener *listener = (struct listener *)handle;
 576     HRESULT hr;
 577
 578     TRACE( "%p %u %p %u\n", handle, id, value, size );
 579     if (error) FIXME( "ignoring error parameter\n" );
 580
 581     if (!listener) return E_INVALIDARG;
 582
 583     EnterCriticalSection( &listener->cs );
 584
 585     if (listener->magic != LISTENER_MAGIC)
 586     {
 587         LeaveCriticalSection( &listener->cs );
 588         return E_INVALIDARG;
 589     }
 590
 591     hr = prop_set( listener->prop, listener->prop_count, id, value, size );
 592
 593     LeaveCriticalSection( &listener->cs );
 594     return hr;
 595 }
 596
 597 /**************************************************************************
 598  *          WsAcceptChannel             [webservices.@]
 599  */
 600 HRESULT WINAPI WsAcceptChannel( WS_LISTENER *handle, WS_CHANNEL *channel_handle, const WS_ASYNC_CONTEXT *ctx,
 601                                 WS_ERROR *error )
 602 {
 603     struct listener *listener = (struct listener *)handle;
 604     HRESULT hr = E_NOTIMPL;
 605     HANDLE wait, cancel;
 606
 607     TRACE( "%p %p %p %p\n", handle, channel_handle, ctx, error );
 608     if (error) FIXME( "ignoring error parameter\n" );
 609     if (ctx) FIXME( "ignoring ctx parameter\n" );
 610
 611     if (!listener || !channel_handle) return E_INVALIDARG;
 612
 613     EnterCriticalSection( &listener->cs );
 614
 615     if (listener->magic != LISTENER_MAGIC)
 616     {
 617         LeaveCriticalSection( &listener->cs );
 618         return E_INVALIDARG;
 619     }
 620
 621     if (listener->state != WS_LISTENER_STATE_OPEN || listener->channel)
 622     {
 623         LeaveCriticalSection( &listener->cs );
 624         return WS_E_INVALID_OPERATION;
 625     }
 626
 627     wait = listener->wait;
 628     cancel = listener->cancel;
 629     listener->channel = channel_handle;
 630
 631     switch (listener->binding)
 632     {
 633     case WS_TCP_CHANNEL_BINDING:
 634     {
 635         SOCKET socket = listener->u.tcp.socket;
 636
 637         LeaveCriticalSection( &listener->cs );
 638         return channel_accept_tcp( socket, wait, cancel, channel_handle );
 639     }
 640     case WS_UDP_CHANNEL_BINDING:
 641     {
 642         SOCKET socket = listener->u.udp.socket;
 643
 644         LeaveCriticalSection( &listener->cs );
 645         return channel_accept_udp( socket, wait, cancel, channel_handle );
 646     }
 647     default:
 648         FIXME( "listener binding %u not supported\n", listener->binding );
 649         break;
 650     }
 651
 652     LeaveCriticalSection( &listener->cs );
 653     return hr;
 654 }