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/heap.h"
  27 #include "wine/list.h"
  28 #include "wine/unicode.h"
  29 #include "webservices_private.h"
  30 #include "sock.h"
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(webservices);
  33
  34 static BOOL winsock_loaded;
  35
  36 static BOOL WINAPI winsock_startup( INIT_ONCE *once, void *param, void **ctx )
  37 {
  38     int ret;
  39     WSADATA data;
  40     if (!(ret = WSAStartup( MAKEWORD(1,1), &data ))) winsock_loaded = TRUE;
  41     else ERR( "WSAStartup failed: %d\n", ret );
  42     return TRUE;
  43 }
  44
  45 void winsock_init(void)
  46 {
  47     static INIT_ONCE once = INIT_ONCE_STATIC_INIT;
  48     InitOnceExecuteOnce( &once, winsock_startup, NULL, NULL );
  49 }
  50
  51 static const struct prop_desc listener_props[] =
  52 {
  53     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_LISTEN_BACKLOG */
  54     { sizeof(WS_IP_VERSION), FALSE },                       /* WS_LISTENER_PROPERTY_IP_VERSION */
  55     { sizeof(WS_LISTENER_STATE), TRUE },                    /* WS_LISTENER_PROPERTY_STATE */
  56     { sizeof(WS_CALLBACK_MODEL), FALSE },                   /* WS_LISTENER_PROPERTY_ASYNC_CALLBACK_MODEL */
  57     { sizeof(WS_CHANNEL_TYPE), TRUE },                      /* WS_LISTENER_PROPERTY_CHANNEL_TYPE */
  58     { sizeof(WS_CHANNEL_BINDING), TRUE },                   /* WS_LISTENER_PROPERTY_CHANNEL_BINDING */
  59     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CONNECT_TIMEOUT */
  60     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_IS_MULTICAST */
  61     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_MULTICAST_INTERFACES */
  62     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_MULTICAST_LOOPBACK */
  63     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CLOSE_TIMEOUT */
  64     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TO_HEADER_MATCHING_OPTIONS */
  65     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TRANSPORT_URL_MATCHING_OPTIONS */
  66     { sizeof(WS_CUSTOM_LISTENER_CALLBACKS), FALSE },        /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_CALLBACKS */
  67     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_PARAMETERS */
  68     { sizeof(void *), TRUE },                               /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_INSTANCE */
  69     { sizeof(WS_DISALLOWED_USER_AGENT_SUBSTRINGS), FALSE }  /* WS_LISTENER_PROPERTY_DISALLOWED_USER_AGENT */
  70 };
  71
  72 struct listener
  73 {
  74     ULONG                   magic;
  75     CRITICAL_SECTION        cs;
  76     WS_CHANNEL_TYPE         type;
  77     WS_CHANNEL_BINDING      binding;
  78     WS_LISTENER_STATE       state;
  79     HANDLE                  wait;
  80     HANDLE                  cancel;
  81     WS_CHANNEL             *channel;
  82     union
  83     {
  84         struct
  85         {
  86             SOCKET socket;
  87         } tcp;
  88         struct
  89         {
  90             SOCKET socket;
  91         } udp;
  92     } u;
  93     ULONG                   prop_count;
  94     struct prop             prop[sizeof(listener_props)/sizeof(listener_props[0])];
  95 };
  96
  97 #define LISTENER_MAGIC (('L' << 24) | ('I' << 16) | ('S' << 8) | 'T')
  98
  99 static struct listener *alloc_listener(void)
 100 {
 101     static const ULONG count = sizeof(listener_props)/sizeof(listener_props[0]);
 102     struct listener *ret;
 103     ULONG size = sizeof(*ret) + prop_size( listener_props, count );
 104
 105     if (!(ret = heap_alloc_zero( size ))) return NULL;
 106
 107     ret->magic = LISTENER_MAGIC;
 108     if (!(ret->wait = CreateEventW( NULL, FALSE, FALSE, NULL )))
 109     {
 110         heap_free( ret );
 111         return NULL;
 112     }
 113     if (!(ret->cancel = CreateEventW( NULL, FALSE, FALSE, NULL )))
 114     {
 115         CloseHandle( ret->wait );
 116         heap_free( ret );
 117         return NULL;
 118     }
 119     InitializeCriticalSection( &ret->cs );
 120     ret->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": listener.cs");
 121
 122     prop_init( listener_props, count, ret->prop, &ret[1] );
 123     ret->prop_count = count;
 124     return ret;
 125 }
 126
 127 static void reset_listener( struct listener *listener )
 128 {
 129     listener->state = WS_LISTENER_STATE_CREATED;
 130     SetEvent( listener->cancel );
 131     listener->channel = NULL;
 132
 133     switch (listener->binding)
 134     {
 135     case WS_TCP_CHANNEL_BINDING:
 136         closesocket( listener->u.tcp.socket );
 137         listener->u.tcp.socket = -1;
 138         break;
 139
 140     case WS_UDP_CHANNEL_BINDING:
 141         closesocket( listener->u.udp.socket );
 142         listener->u.udp.socket = -1;
 143         break;
 144
 145     default: break;
 146     }
 147 }
 148
 149 static void free_listener( struct listener *listener )
 150 {
 151     reset_listener( listener );
 152
 153     CloseHandle( listener->wait );
 154     CloseHandle( listener->cancel );
 155
 156     listener->cs.DebugInfo->Spare[0] = 0;
 157     DeleteCriticalSection( &listener->cs );
 158     heap_free( listener );
 159 }
 160
 161 static HRESULT create_listener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 162                                 const WS_LISTENER_PROPERTY *properties, ULONG count, struct listener **ret )
 163 {
 164     struct listener *listener;
 165     HRESULT hr;
 166     ULONG i;
 167
 168     if (!(listener = alloc_listener())) return E_OUTOFMEMORY;
 169
 170     for (i = 0; i < count; i++)
 171     {
 172         hr = prop_set( listener->prop, listener->prop_count, properties[i].id, properties[i].value,
 173                        properties[i].valueSize );
 174         if (hr != S_OK)
 175         {
 176             free_listener( listener );
 177             return hr;
 178         }
 179     }
 180
 181     listener->type    = type;
 182     listener->binding = binding;
 183
 184     switch (listener->binding)
 185     {
 186     case WS_TCP_CHANNEL_BINDING:
 187         listener->u.tcp.socket = -1;
 188         break;
 189
 190     case WS_UDP_CHANNEL_BINDING:
 191         listener->u.udp.socket = -1;
 192         break;
 193
 194     default: break;
 195     }
 196
 197     *ret = listener;
 198     return S_OK;
 199 }
 200
 201 /**************************************************************************
 202  *          WsCreateListener            [webservices.@]
 203  */
 204 HRESULT WINAPI WsCreateListener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 205                                  const WS_LISTENER_PROPERTY *properties, ULONG count,
 206                                  const WS_SECURITY_DESCRIPTION *desc, WS_LISTENER **handle,
 207                                  WS_ERROR *error )
 208 {
 209     struct listener *listener;
 210     HRESULT hr;
 211
 212     TRACE( "%u %u %p %u %p %p %p\n", type, binding, properties, count, desc, handle, error );
 213     if (error) FIXME( "ignoring error parameter\n" );
 214     if (desc) FIXME( "ignoring security description\n" );
 215
 216     if (!handle) return E_INVALIDARG;
 217
 218     if (type != WS_CHANNEL_TYPE_DUPLEX_SESSION && type != WS_CHANNEL_TYPE_DUPLEX)
 219     {
 220         FIXME( "channel type %u not implemented\n", type );
 221         return E_NOTIMPL;
 222     }
 223     if (binding != WS_TCP_CHANNEL_BINDING && binding != WS_UDP_CHANNEL_BINDING)
 224     {
 225         FIXME( "channel binding %u not implemented\n", binding );
 226         return E_NOTIMPL;
 227     }
 228
 229     if ((hr = create_listener( type, binding, properties, count, &listener )) != S_OK) return hr;
 230
 231     TRACE( "created %p\n", listener );
 232     *handle = (WS_LISTENER *)listener;
 233     return S_OK;
 234 }
 235
 236 /**************************************************************************
 237  *          WsFreeListener              [webservices.@]
 238  */
 239 void WINAPI WsFreeListener( WS_LISTENER *handle )
 240 {
 241     struct listener *listener = (struct listener *)handle;
 242
 243     TRACE( "%p\n", handle );
 244
 245     if (!listener) return;
 246
 247     EnterCriticalSection( &listener->cs );
 248
 249     if (listener->magic != LISTENER_MAGIC)
 250     {
 251         LeaveCriticalSection( &listener->cs );
 252         return;
 253     }
 254
 255     listener->magic = 0;
 256
 257     LeaveCriticalSection( &listener->cs );
 258     free_listener( listener );
 259 }
 260
 261 HRESULT resolve_hostname( const WCHAR *host, USHORT port, struct sockaddr *addr, int *addr_len, int flags )
 262 {
 263     static const WCHAR fmtW[] = {'%','u',0};
 264     WCHAR service[6];
 265     ADDRINFOW hints, *res, *info;
 266     HRESULT hr = WS_E_ADDRESS_NOT_AVAILABLE;
 267
 268     memset( &hints, 0, sizeof(hints) );
 269     hints.ai_flags  = flags;
 270     hints.ai_family = AF_INET;
 271
 272     *addr_len = 0;
 273     sprintfW( service, fmtW, port );
 274     if (GetAddrInfoW( host, service, &hints, &res )) return HRESULT_FROM_WIN32( WSAGetLastError() );
 275
 276     info = res;
 277     while (info && info->ai_family != AF_INET) info = info->ai_next;
 278     if (info)
 279     {
 280         memcpy( addr, info->ai_addr, info->ai_addrlen );
 281         *addr_len = info->ai_addrlen;
 282         hr = S_OK;
 283     }
 284
 285     FreeAddrInfoW( res );
 286     return hr;
 287 }
 288
 289 HRESULT parse_url( const WS_STRING *str, WS_URL_SCHEME_TYPE *scheme, WCHAR **host, USHORT *port )
 290 {
 291     WS_HEAP *heap;
 292     WS_NETTCP_URL *url;
 293     HRESULT hr;
 294
 295     if ((hr = WsCreateHeap( 1 << 8, 0, NULL, 0, &heap, NULL )) != S_OK) return hr;
 296     if ((hr = WsDecodeUrl( str, 0, heap, (WS_URL **)&url, NULL )) != S_OK)
 297     {
 298         WsFreeHeap( heap );
 299         return hr;
 300     }
 301
 302     if (url->host.length == 1 && (url->host.chars[0] == '+' || url->host.chars[0] == '*')) *host = NULL;
 303     else
 304     {
 305         if (!(*host = heap_alloc( (url->host.length + 1) * sizeof(WCHAR) )))
 306         {
 307             WsFreeHeap( heap );
 308             return E_OUTOFMEMORY;
 309         }
 310         memcpy( *host, url->host.chars, url->host.length * sizeof(WCHAR) );
 311         (*host)[url->host.length] = 0;
 312     }
 313     *scheme = url->url.scheme;
 314     *port = url->port;
 315
 316     WsFreeHeap( heap );
 317     return hr;
 318 }
 319
 320 static HRESULT open_listener_tcp( struct listener *listener, const WS_STRING *url )
 321 {
 322     struct sockaddr_storage storage;
 323     struct sockaddr *addr = (struct sockaddr *)&storage;
 324     int addr_len, on = 1;
 325     WS_URL_SCHEME_TYPE scheme;
 326     WCHAR *host;
 327     USHORT port;
 328     HRESULT hr;
 329
 330     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 331     if (scheme != WS_URL_NETTCP_SCHEME_TYPE)
 332     {
 333         heap_free( host );
 334         return WS_E_INVALID_ENDPOINT_URL;
 335     }
 336
 337     winsock_init();
 338
 339     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 340     heap_free( host );
 341     if (hr != S_OK) return hr;
 342
 343     if ((listener->u.tcp.socket = socket( addr->sa_family, SOCK_STREAM, 0 )) == -1)
 344         return HRESULT_FROM_WIN32( WSAGetLastError() );
 345
 346     if (setsockopt( listener->u.tcp.socket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on) ) < 0)
 347     {
 348         closesocket( listener->u.tcp.socket );
 349         listener->u.tcp.socket = -1;
 350         return HRESULT_FROM_WIN32( WSAGetLastError() );
 351     }
 352
 353     if (bind( listener->u.tcp.socket, addr, addr_len ) < 0)
 354     {
 355         closesocket( listener->u.tcp.socket );
 356         listener->u.tcp.socket = -1;
 357         return HRESULT_FROM_WIN32( WSAGetLastError() );
 358     }
 359
 360     if (listen( listener->u.tcp.socket, 0 ) < 0)
 361     {
 362         closesocket( listener->u.tcp.socket );
 363         listener->u.tcp.socket = -1;
 364         return HRESULT_FROM_WIN32( WSAGetLastError() );
 365     }
 366
 367     listener->state = WS_LISTENER_STATE_OPEN;
 368     return S_OK;
 369 }
 370
 371 static HRESULT open_listener_udp( struct listener *listener, const WS_STRING *url )
 372 {
 373     struct sockaddr_storage storage;
 374     struct sockaddr *addr = (struct sockaddr *)&storage;
 375     int addr_len;
 376     WS_URL_SCHEME_TYPE scheme;
 377     WCHAR *host;
 378     USHORT port;
 379     HRESULT hr;
 380
 381     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 382     if (scheme != WS_URL_SOAPUDP_SCHEME_TYPE)
 383     {
 384         heap_free( host );
 385         return WS_E_INVALID_ENDPOINT_URL;
 386     }
 387
 388     winsock_init();
 389
 390     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 391     heap_free( host );
 392     if (hr != S_OK) return hr;
 393
 394     if ((listener->u.udp.socket = socket( addr->sa_family, SOCK_DGRAM, 0 )) == -1)
 395         return HRESULT_FROM_WIN32( WSAGetLastError() );
 396
 397     if (bind( listener->u.udp.socket, addr, addr_len ) < 0)
 398     {
 399         closesocket( listener->u.udp.socket );
 400         listener->u.udp.socket = -1;
 401         return HRESULT_FROM_WIN32( WSAGetLastError() );
 402     }
 403
 404     listener->state = WS_LISTENER_STATE_OPEN;
 405     return S_OK;
 406 }
 407
 408 static HRESULT open_listener( struct listener *listener, const WS_STRING *url )
 409 {
 410     switch (listener->binding)
 411     {
 412     case WS_TCP_CHANNEL_BINDING:
 413         return open_listener_tcp( listener, url );
 414
 415     case WS_UDP_CHANNEL_BINDING:
 416         return open_listener_udp( listener, url );
 417
 418     default:
 419         ERR( "unhandled binding %u\n", listener->binding );
 420         return E_NOTIMPL;
 421     }
 422 }
 423
 424 /**************************************************************************
 425  *          WsOpenListener              [webservices.@]
 426  */
 427 HRESULT WINAPI WsOpenListener( WS_LISTENER *handle, WS_STRING *url, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 428 {
 429     struct listener *listener = (struct listener *)handle;
 430     HRESULT hr;
 431
 432     TRACE( "%p %s %p %p\n", handle, url ? debugstr_wn(url->chars, url->length) : "null", ctx, error );
 433     if (error) FIXME( "ignoring error parameter\n" );
 434     if (ctx) FIXME( "ignoring ctx parameter\n" );
 435
 436     if (!listener || !url) return E_INVALIDARG;
 437
 438     EnterCriticalSection( &listener->cs );
 439
 440     if (listener->magic != LISTENER_MAGIC)
 441     {
 442         LeaveCriticalSection( &listener->cs );
 443         return E_INVALIDARG;
 444     }
 445
 446     if (listener->state != WS_LISTENER_STATE_CREATED)
 447     {
 448         LeaveCriticalSection( &listener->cs );
 449         return WS_E_INVALID_OPERATION;
 450     }
 451
 452     hr = open_listener( listener, url );
 453
 454     LeaveCriticalSection( &listener->cs );
 455     return hr;
 456 }
 457
 458 static void close_listener( struct listener *listener )
 459 {
 460     reset_listener( listener );
 461     listener->state = WS_LISTENER_STATE_CLOSED;
 462 }
 463
 464 /**************************************************************************
 465  *          WsCloseListener             [webservices.@]
 466  */
 467 HRESULT WINAPI WsCloseListener( WS_LISTENER *handle, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 468 {
 469     struct listener *listener = (struct listener *)handle;
 470
 471     TRACE( "%p %p %p\n", handle, ctx, error );
 472     if (error) FIXME( "ignoring error parameter\n" );
 473     if (ctx) FIXME( "ignoring ctx parameter\n" );
 474
 475     if (!listener) return E_INVALIDARG;
 476
 477     EnterCriticalSection( &listener->cs );
 478
 479     if (listener->magic != LISTENER_MAGIC)
 480     {
 481         LeaveCriticalSection( &listener->cs );
 482         return E_INVALIDARG;
 483     }
 484
 485     close_listener( listener );
 486
 487     LeaveCriticalSection( &listener->cs );
 488     return S_OK;
 489 }
 490
 491 /**************************************************************************
 492  *          WsResetListener             [webservices.@]
 493  */
 494 HRESULT WINAPI WsResetListener( WS_LISTENER *handle, WS_ERROR *error )
 495 {
 496     struct listener *listener = (struct listener *)handle;
 497
 498     TRACE( "%p %p\n", handle, error );
 499     if (error) FIXME( "ignoring error parameter\n" );
 500
 501     if (!listener) return E_INVALIDARG;
 502
 503     EnterCriticalSection( &listener->cs );
 504
 505     if (listener->magic != LISTENER_MAGIC)
 506     {
 507         LeaveCriticalSection( &listener->cs );
 508         return E_INVALIDARG;
 509     }
 510
 511     if (listener->state != WS_LISTENER_STATE_CREATED && listener->state != WS_LISTENER_STATE_CLOSED)
 512     {
 513         LeaveCriticalSection( &listener->cs );
 514         return WS_E_INVALID_OPERATION;
 515     }
 516
 517     reset_listener( listener );
 518
 519     LeaveCriticalSection( &listener->cs );
 520     return S_OK;
 521 }
 522
 523 /**************************************************************************
 524  *          WsGetListenerProperty               [webservices.@]
 525  */
 526 HRESULT WINAPI WsGetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, void *buf,
 527                                       ULONG size, WS_ERROR *error )
 528 {
 529     struct listener *listener = (struct listener *)handle;
 530     HRESULT hr = S_OK;
 531
 532     TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
 533     if (error) FIXME( "ignoring error parameter\n" );
 534
 535     if (!listener) return E_INVALIDARG;
 536
 537     EnterCriticalSection( &listener->cs );
 538
 539     if (listener->magic != LISTENER_MAGIC)
 540     {
 541         LeaveCriticalSection( &listener->cs );
 542         return E_INVALIDARG;
 543     }
 544
 545     switch (id)
 546     {
 547     case WS_LISTENER_PROPERTY_STATE:
 548         if (!buf || size != sizeof(listener->state)) hr = E_INVALIDARG;
 549         else *(WS_LISTENER_STATE *)buf = listener->state;
 550         break;
 551
 552     case WS_LISTENER_PROPERTY_CHANNEL_TYPE:
 553         if (!buf || size != sizeof(listener->type)) hr = E_INVALIDARG;
 554         else *(WS_CHANNEL_TYPE *)buf = listener->type;
 555         break;
 556
 557     case WS_LISTENER_PROPERTY_CHANNEL_BINDING:
 558         if (!buf || size != sizeof(listener->binding)) hr = E_INVALIDARG;
 559         else *(WS_CHANNEL_BINDING *)buf = listener->binding;
 560         break;
 561
 562     default:
 563         hr = prop_get( listener->prop, listener->prop_count, id, buf, size );
 564     }
 565
 566     LeaveCriticalSection( &listener->cs );
 567     return hr;
 568 }
 569
 570 /**************************************************************************
 571  *          WsSetListenerProperty               [webservices.@]
 572  */
 573 HRESULT WINAPI WsSetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, const void *value,
 574                                       ULONG size, WS_ERROR *error )
 575 {
 576     struct listener *listener = (struct listener *)handle;
 577     HRESULT hr;
 578
 579     TRACE( "%p %u %p %u\n", handle, id, value, size );
 580     if (error) FIXME( "ignoring error parameter\n" );
 581
 582     if (!listener) return E_INVALIDARG;
 583
 584     EnterCriticalSection( &listener->cs );
 585
 586     if (listener->magic != LISTENER_MAGIC)
 587     {
 588         LeaveCriticalSection( &listener->cs );
 589         return E_INVALIDARG;
 590     }
 591
 592     hr = prop_set( listener->prop, listener->prop_count, id, value, size );
 593
 594     LeaveCriticalSection( &listener->cs );
 595     return hr;
 596 }
 597
 598 /**************************************************************************
 599  *          WsAcceptChannel             [webservices.@]
 600  */
 601 HRESULT WINAPI WsAcceptChannel( WS_LISTENER *handle, WS_CHANNEL *channel_handle, const WS_ASYNC_CONTEXT *ctx,
 602                                 WS_ERROR *error )
 603 {
 604     struct listener *listener = (struct listener *)handle;
 605     HRESULT hr = E_NOTIMPL;
 606     HANDLE wait, cancel;
 607
 608     TRACE( "%p %p %p %p\n", handle, channel_handle, ctx, error );
 609     if (error) FIXME( "ignoring error parameter\n" );
 610     if (ctx) FIXME( "ignoring ctx parameter\n" );
 611
 612     if (!listener || !channel_handle) return E_INVALIDARG;
 613
 614     EnterCriticalSection( &listener->cs );
 615
 616     if (listener->magic != LISTENER_MAGIC)
 617     {
 618         LeaveCriticalSection( &listener->cs );
 619         return E_INVALIDARG;
 620     }
 621
 622     if (listener->state != WS_LISTENER_STATE_OPEN || listener->channel)
 623     {
 624         LeaveCriticalSection( &listener->cs );
 625         return WS_E_INVALID_OPERATION;
 626     }
 627
 628     wait = listener->wait;
 629     cancel = listener->cancel;
 630     listener->channel = channel_handle;
 631
 632     switch (listener->binding)
 633     {
 634     case WS_TCP_CHANNEL_BINDING:
 635     {
 636         SOCKET socket = listener->u.tcp.socket;
 637
 638         LeaveCriticalSection( &listener->cs );
 639         return channel_accept_tcp( socket, wait, cancel, channel_handle );
 640     }
 641     case WS_UDP_CHANNEL_BINDING:
 642     {
 643         SOCKET socket = listener->u.udp.socket;
 644
 645         LeaveCriticalSection( &listener->cs );
 646         return channel_accept_udp( socket, wait, cancel, channel_handle );
 647     }
 648     default:
 649         FIXME( "listener binding %u not supported\n", listener->binding );
 650         break;
 651     }
 652
 653     LeaveCriticalSection( &listener->cs );
 654     return hr;
 655 }