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 HINSTANCE webservices_instance;
  35
  36 static BOOL winsock_loaded;
  37
  38 static BOOL WINAPI winsock_startup( INIT_ONCE *once, void *param, void **ctx )
  39 {
  40     int ret;
  41     WSADATA data;
  42     if (!(ret = WSAStartup( MAKEWORD(1,1), &data ))) winsock_loaded = TRUE;
  43     else ERR( "WSAStartup failed: %d\n", ret );
  44     return TRUE;
  45 }
  46
  47 void winsock_init(void)
  48 {
  49     static INIT_ONCE once = INIT_ONCE_STATIC_INIT;
  50     InitOnceExecuteOnce( &once, winsock_startup, NULL, NULL );
  51 }
  52
  53 /******************************************************************
  54  *      DllMain (webservices.@)
  55  */
  56 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, void *reserved )
  57 {
  58     switch (reason)
  59     {
  60     case DLL_PROCESS_ATTACH:
  61         webservices_instance = hinst;
  62         DisableThreadLibraryCalls( hinst );
  63         break;
  64
  65     case DLL_PROCESS_DETACH:
  66         if (reserved) break;
  67         if (winsock_loaded) WSACleanup();
  68         break;
  69     }
  70     return TRUE;
  71 }
  72
  73 static const struct prop_desc listener_props[] =
  74 {
  75     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_LISTEN_BACKLOG */
  76     { sizeof(WS_IP_VERSION), FALSE },                       /* WS_LISTENER_PROPERTY_IP_VERSION */
  77     { sizeof(WS_LISTENER_STATE), TRUE },                    /* WS_LISTENER_PROPERTY_STATE */
  78     { sizeof(WS_CALLBACK_MODEL), FALSE },                   /* WS_LISTENER_PROPERTY_ASYNC_CALLBACK_MODEL */
  79     { sizeof(WS_CHANNEL_TYPE), TRUE },                      /* WS_LISTENER_PROPERTY_CHANNEL_TYPE */
  80     { sizeof(WS_CHANNEL_BINDING), TRUE },                   /* WS_LISTENER_PROPERTY_CHANNEL_BINDING */
  81     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CONNECT_TIMEOUT */
  82     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_IS_MULTICAST */
  83     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_MULTICAST_INTERFACES */
  84     { sizeof(BOOL), FALSE },                                /* WS_LISTENER_PROPERTY_MULTICAST_LOOPBACK */
  85     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_CLOSE_TIMEOUT */
  86     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TO_HEADER_MATCHING_OPTIONS */
  87     { sizeof(ULONG), FALSE },                               /* WS_LISTENER_PROPERTY_TRANSPORT_URL_MATCHING_OPTIONS */
  88     { sizeof(WS_CUSTOM_LISTENER_CALLBACKS), FALSE },        /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_CALLBACKS */
  89     { 0, FALSE },                                           /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_PARAMETERS */
  90     { sizeof(void *), TRUE },                               /* WS_LISTENER_PROPERTY_CUSTOM_LISTENER_INSTANCE */
  91     { sizeof(WS_DISALLOWED_USER_AGENT_SUBSTRINGS), FALSE }  /* WS_LISTENER_PROPERTY_DISALLOWED_USER_AGENT */
  92 };
  93
  94 struct listener
  95 {
  96     ULONG                   magic;
  97     CRITICAL_SECTION        cs;
  98     WS_CHANNEL_TYPE         type;
  99     WS_CHANNEL_BINDING      binding;
 100     WS_LISTENER_STATE       state;
 101     HANDLE                  wait;
 102     HANDLE                  cancel;
 103     WS_CHANNEL             *channel;
 104     union
 105     {
 106         struct
 107         {
 108             SOCKET socket;
 109         } tcp;
 110         struct
 111         {
 112             SOCKET socket;
 113         } udp;
 114     } u;
 115     ULONG                   prop_count;
 116     struct prop             prop[sizeof(listener_props)/sizeof(listener_props[0])];
 117 };
 118
 119 #define LISTENER_MAGIC (('L' << 24) | ('I' << 16) | ('S' << 8) | 'T')
 120
 121 static struct listener *alloc_listener(void)
 122 {
 123     static const ULONG count = sizeof(listener_props)/sizeof(listener_props[0]);
 124     struct listener *ret;
 125     ULONG size = sizeof(*ret) + prop_size( listener_props, count );
 126
 127     if (!(ret = heap_alloc_zero( size ))) return NULL;
 128
 129     ret->magic = LISTENER_MAGIC;
 130     if (!(ret->wait = CreateEventW( NULL, FALSE, FALSE, NULL )))
 131     {
 132         heap_free( ret );
 133         return NULL;
 134     }
 135     if (!(ret->cancel = CreateEventW( NULL, FALSE, FALSE, NULL )))
 136     {
 137         CloseHandle( ret->wait );
 138         heap_free( ret );
 139         return NULL;
 140     }
 141     InitializeCriticalSection( &ret->cs );
 142     ret->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": listener.cs");
 143
 144     prop_init( listener_props, count, ret->prop, &ret[1] );
 145     ret->prop_count = count;
 146     return ret;
 147 }
 148
 149 static void reset_listener( struct listener *listener )
 150 {
 151     listener->state = WS_LISTENER_STATE_CREATED;
 152     SetEvent( listener->cancel );
 153     listener->channel = NULL;
 154
 155     switch (listener->binding)
 156     {
 157     case WS_TCP_CHANNEL_BINDING:
 158         closesocket( listener->u.tcp.socket );
 159         listener->u.tcp.socket = -1;
 160         break;
 161
 162     case WS_UDP_CHANNEL_BINDING:
 163         closesocket( listener->u.udp.socket );
 164         listener->u.udp.socket = -1;
 165         break;
 166
 167     default: break;
 168     }
 169 }
 170
 171 static void free_listener( struct listener *listener )
 172 {
 173     reset_listener( listener );
 174
 175     CloseHandle( listener->wait );
 176     CloseHandle( listener->cancel );
 177
 178     listener->cs.DebugInfo->Spare[0] = 0;
 179     DeleteCriticalSection( &listener->cs );
 180     heap_free( listener );
 181 }
 182
 183 static HRESULT create_listener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 184                                 const WS_LISTENER_PROPERTY *properties, ULONG count, struct listener **ret )
 185 {
 186     struct listener *listener;
 187     HRESULT hr;
 188     ULONG i;
 189
 190     if (!(listener = alloc_listener())) return E_OUTOFMEMORY;
 191
 192     for (i = 0; i < count; i++)
 193     {
 194         hr = prop_set( listener->prop, listener->prop_count, properties[i].id, properties[i].value,
 195                        properties[i].valueSize );
 196         if (hr != S_OK)
 197         {
 198             free_listener( listener );
 199             return hr;
 200         }
 201     }
 202
 203     listener->type    = type;
 204     listener->binding = binding;
 205
 206     switch (listener->binding)
 207     {
 208     case WS_TCP_CHANNEL_BINDING:
 209         listener->u.tcp.socket = -1;
 210         break;
 211
 212     case WS_UDP_CHANNEL_BINDING:
 213         listener->u.udp.socket = -1;
 214         break;
 215
 216     default: break;
 217     }
 218
 219     *ret = listener;
 220     return S_OK;
 221 }
 222
 223 /**************************************************************************
 224  *          WsCreateListener            [webservices.@]
 225  */
 226 HRESULT WINAPI WsCreateListener( WS_CHANNEL_TYPE type, WS_CHANNEL_BINDING binding,
 227                                  const WS_LISTENER_PROPERTY *properties, ULONG count,
 228                                  const WS_SECURITY_DESCRIPTION *desc, WS_LISTENER **handle,
 229                                  WS_ERROR *error )
 230 {
 231     struct listener *listener;
 232     HRESULT hr;
 233
 234     TRACE( "%u %u %p %u %p %p %p\n", type, binding, properties, count, desc, handle, error );
 235     if (error) FIXME( "ignoring error parameter\n" );
 236     if (desc) FIXME( "ignoring security description\n" );
 237
 238     if (!handle) return E_INVALIDARG;
 239
 240     if (type != WS_CHANNEL_TYPE_DUPLEX_SESSION && type != WS_CHANNEL_TYPE_DUPLEX)
 241     {
 242         FIXME( "channel type %u not implemented\n", type );
 243         return E_NOTIMPL;
 244     }
 245     if (binding != WS_TCP_CHANNEL_BINDING && binding != WS_UDP_CHANNEL_BINDING)
 246     {
 247         FIXME( "channel binding %u not implemented\n", binding );
 248         return E_NOTIMPL;
 249     }
 250
 251     if ((hr = create_listener( type, binding, properties, count, &listener )) != S_OK) return hr;
 252
 253     TRACE( "created %p\n", listener );
 254     *handle = (WS_LISTENER *)listener;
 255     return S_OK;
 256 }
 257
 258 /**************************************************************************
 259  *          WsFreeListener              [webservices.@]
 260  */
 261 void WINAPI WsFreeListener( WS_LISTENER *handle )
 262 {
 263     struct listener *listener = (struct listener *)handle;
 264
 265     TRACE( "%p\n", handle );
 266
 267     if (!listener) return;
 268
 269     EnterCriticalSection( &listener->cs );
 270
 271     if (listener->magic != LISTENER_MAGIC)
 272     {
 273         LeaveCriticalSection( &listener->cs );
 274         return;
 275     }
 276
 277     listener->magic = 0;
 278
 279     LeaveCriticalSection( &listener->cs );
 280     free_listener( listener );
 281 }
 282
 283 HRESULT resolve_hostname( const WCHAR *host, USHORT port, struct sockaddr *addr, int *addr_len, int flags )
 284 {
 285     static const WCHAR fmtW[] = {'%','u',0};
 286     WCHAR service[6];
 287     ADDRINFOW hints, *res, *info;
 288     HRESULT hr = WS_E_ADDRESS_NOT_AVAILABLE;
 289
 290     memset( &hints, 0, sizeof(hints) );
 291     hints.ai_flags  = flags;
 292     hints.ai_family = AF_INET;
 293
 294     *addr_len = 0;
 295     sprintfW( service, fmtW, port );
 296     if (GetAddrInfoW( host, service, &hints, &res )) return HRESULT_FROM_WIN32( WSAGetLastError() );
 297
 298     info = res;
 299     while (info && info->ai_family != AF_INET) info = info->ai_next;
 300     if (info)
 301     {
 302         memcpy( addr, info->ai_addr, info->ai_addrlen );
 303         *addr_len = info->ai_addrlen;
 304         hr = S_OK;
 305     }
 306
 307     FreeAddrInfoW( res );
 308     return hr;
 309 }
 310
 311 HRESULT parse_url( const WS_STRING *str, WS_URL_SCHEME_TYPE *scheme, WCHAR **host, USHORT *port )
 312 {
 313     WS_HEAP *heap;
 314     WS_NETTCP_URL *url;
 315     HRESULT hr;
 316
 317     if ((hr = WsCreateHeap( 1 << 8, 0, NULL, 0, &heap, NULL )) != S_OK) return hr;
 318     if ((hr = WsDecodeUrl( str, 0, heap, (WS_URL **)&url, NULL )) != S_OK)
 319     {
 320         WsFreeHeap( heap );
 321         return hr;
 322     }
 323
 324     if (url->host.length == 1 && (url->host.chars[0] == '+' || url->host.chars[0] == '*')) *host = NULL;
 325     else
 326     {
 327         if (!(*host = heap_alloc( (url->host.length + 1) * sizeof(WCHAR) )))
 328         {
 329             WsFreeHeap( heap );
 330             return E_OUTOFMEMORY;
 331         }
 332         memcpy( *host, url->host.chars, url->host.length * sizeof(WCHAR) );
 333         (*host)[url->host.length] = 0;
 334     }
 335     *scheme = url->url.scheme;
 336     *port = url->port;
 337
 338     WsFreeHeap( heap );
 339     return hr;
 340 }
 341
 342 static HRESULT open_listener_tcp( struct listener *listener, const WS_STRING *url )
 343 {
 344     struct sockaddr_storage storage;
 345     struct sockaddr *addr = (struct sockaddr *)&storage;
 346     int addr_len, on = 1;
 347     WS_URL_SCHEME_TYPE scheme;
 348     WCHAR *host;
 349     USHORT port;
 350     HRESULT hr;
 351
 352     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 353     if (scheme != WS_URL_NETTCP_SCHEME_TYPE)
 354     {
 355         heap_free( host );
 356         return WS_E_INVALID_ENDPOINT_URL;
 357     }
 358
 359     winsock_init();
 360
 361     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 362     heap_free( host );
 363     if (hr != S_OK) return hr;
 364
 365     if ((listener->u.tcp.socket = socket( addr->sa_family, SOCK_STREAM, 0 )) == -1)
 366         return HRESULT_FROM_WIN32( WSAGetLastError() );
 367
 368     if (setsockopt( listener->u.tcp.socket, SOL_SOCKET, SO_REUSEADDR, (char *)&on, sizeof(on) ) < 0)
 369     {
 370         closesocket( listener->u.tcp.socket );
 371         listener->u.tcp.socket = -1;
 372         return HRESULT_FROM_WIN32( WSAGetLastError() );
 373     }
 374
 375     if (bind( listener->u.tcp.socket, addr, addr_len ) < 0)
 376     {
 377         closesocket( listener->u.tcp.socket );
 378         listener->u.tcp.socket = -1;
 379         return HRESULT_FROM_WIN32( WSAGetLastError() );
 380     }
 381
 382     if (listen( listener->u.tcp.socket, 0 ) < 0)
 383     {
 384         closesocket( listener->u.tcp.socket );
 385         listener->u.tcp.socket = -1;
 386         return HRESULT_FROM_WIN32( WSAGetLastError() );
 387     }
 388
 389     listener->state = WS_LISTENER_STATE_OPEN;
 390     return S_OK;
 391 }
 392
 393 static HRESULT open_listener_udp( struct listener *listener, const WS_STRING *url )
 394 {
 395     struct sockaddr_storage storage;
 396     struct sockaddr *addr = (struct sockaddr *)&storage;
 397     int addr_len;
 398     WS_URL_SCHEME_TYPE scheme;
 399     WCHAR *host;
 400     USHORT port;
 401     HRESULT hr;
 402
 403     if ((hr = parse_url( url, &scheme, &host, &port )) != S_OK) return hr;
 404     if (scheme != WS_URL_SOAPUDP_SCHEME_TYPE)
 405     {
 406         heap_free( host );
 407         return WS_E_INVALID_ENDPOINT_URL;
 408     }
 409
 410     winsock_init();
 411
 412     hr = resolve_hostname( host, port, addr, &addr_len, AI_PASSIVE );
 413     heap_free( host );
 414     if (hr != S_OK) return hr;
 415
 416     if ((listener->u.udp.socket = socket( addr->sa_family, SOCK_DGRAM, 0 )) == -1)
 417         return HRESULT_FROM_WIN32( WSAGetLastError() );
 418
 419     if (bind( listener->u.udp.socket, addr, addr_len ) < 0)
 420     {
 421         closesocket( listener->u.udp.socket );
 422         listener->u.udp.socket = -1;
 423         return HRESULT_FROM_WIN32( WSAGetLastError() );
 424     }
 425
 426     listener->state = WS_LISTENER_STATE_OPEN;
 427     return S_OK;
 428 }
 429
 430 static HRESULT open_listener( struct listener *listener, const WS_STRING *url )
 431 {
 432     switch (listener->binding)
 433     {
 434     case WS_TCP_CHANNEL_BINDING:
 435         return open_listener_tcp( listener, url );
 436
 437     case WS_UDP_CHANNEL_BINDING:
 438         return open_listener_udp( listener, url );
 439
 440     default:
 441         ERR( "unhandled binding %u\n", listener->binding );
 442         return E_NOTIMPL;
 443     }
 444 }
 445
 446 /**************************************************************************
 447  *          WsOpenListener              [webservices.@]
 448  */
 449 HRESULT WINAPI WsOpenListener( WS_LISTENER *handle, WS_STRING *url, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 450 {
 451     struct listener *listener = (struct listener *)handle;
 452     HRESULT hr;
 453
 454     TRACE( "%p %s %p %p\n", handle, url ? debugstr_wn(url->chars, url->length) : "null", ctx, error );
 455     if (error) FIXME( "ignoring error parameter\n" );
 456     if (ctx) FIXME( "ignoring ctx parameter\n" );
 457
 458     if (!listener || !url) return E_INVALIDARG;
 459
 460     EnterCriticalSection( &listener->cs );
 461
 462     if (listener->magic != LISTENER_MAGIC)
 463     {
 464         LeaveCriticalSection( &listener->cs );
 465         return E_INVALIDARG;
 466     }
 467
 468     if (listener->state != WS_LISTENER_STATE_CREATED)
 469     {
 470         LeaveCriticalSection( &listener->cs );
 471         return WS_E_INVALID_OPERATION;
 472     }
 473
 474     hr = open_listener( listener, url );
 475
 476     LeaveCriticalSection( &listener->cs );
 477     return hr;
 478 }
 479
 480 static void close_listener( struct listener *listener )
 481 {
 482     reset_listener( listener );
 483     listener->state = WS_LISTENER_STATE_CLOSED;
 484 }
 485
 486 /**************************************************************************
 487  *          WsCloseListener             [webservices.@]
 488  */
 489 HRESULT WINAPI WsCloseListener( WS_LISTENER *handle, const WS_ASYNC_CONTEXT *ctx, WS_ERROR *error )
 490 {
 491     struct listener *listener = (struct listener *)handle;
 492
 493     TRACE( "%p %p %p\n", handle, ctx, error );
 494     if (error) FIXME( "ignoring error parameter\n" );
 495     if (ctx) FIXME( "ignoring ctx parameter\n" );
 496
 497     if (!listener) return E_INVALIDARG;
 498
 499     EnterCriticalSection( &listener->cs );
 500
 501     if (listener->magic != LISTENER_MAGIC)
 502     {
 503         LeaveCriticalSection( &listener->cs );
 504         return E_INVALIDARG;
 505     }
 506
 507     close_listener( listener );
 508
 509     LeaveCriticalSection( &listener->cs );
 510     return S_OK;
 511 }
 512
 513 /**************************************************************************
 514  *          WsResetListener             [webservices.@]
 515  */
 516 HRESULT WINAPI WsResetListener( WS_LISTENER *handle, WS_ERROR *error )
 517 {
 518     struct listener *listener = (struct listener *)handle;
 519
 520     TRACE( "%p %p\n", handle, error );
 521     if (error) FIXME( "ignoring error parameter\n" );
 522
 523     if (!listener) return E_INVALIDARG;
 524
 525     EnterCriticalSection( &listener->cs );
 526
 527     if (listener->magic != LISTENER_MAGIC)
 528     {
 529         LeaveCriticalSection( &listener->cs );
 530         return E_INVALIDARG;
 531     }
 532
 533     if (listener->state != WS_LISTENER_STATE_CREATED && listener->state != WS_LISTENER_STATE_CLOSED)
 534     {
 535         LeaveCriticalSection( &listener->cs );
 536         return WS_E_INVALID_OPERATION;
 537     }
 538
 539     reset_listener( listener );
 540
 541     LeaveCriticalSection( &listener->cs );
 542     return S_OK;
 543 }
 544
 545 /**************************************************************************
 546  *          WsGetListenerProperty               [webservices.@]
 547  */
 548 HRESULT WINAPI WsGetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, void *buf,
 549                                       ULONG size, WS_ERROR *error )
 550 {
 551     struct listener *listener = (struct listener *)handle;
 552     HRESULT hr = S_OK;
 553
 554     TRACE( "%p %u %p %u %p\n", handle, id, buf, size, error );
 555     if (error) FIXME( "ignoring error parameter\n" );
 556
 557     if (!listener) return E_INVALIDARG;
 558
 559     EnterCriticalSection( &listener->cs );
 560
 561     if (listener->magic != LISTENER_MAGIC)
 562     {
 563         LeaveCriticalSection( &listener->cs );
 564         return E_INVALIDARG;
 565     }
 566
 567     switch (id)
 568     {
 569     case WS_LISTENER_PROPERTY_STATE:
 570         if (!buf || size != sizeof(listener->state)) hr = E_INVALIDARG;
 571         else *(WS_LISTENER_STATE *)buf = listener->state;
 572         break;
 573
 574     case WS_LISTENER_PROPERTY_CHANNEL_TYPE:
 575         if (!buf || size != sizeof(listener->type)) hr = E_INVALIDARG;
 576         else *(WS_CHANNEL_TYPE *)buf = listener->type;
 577         break;
 578
 579     case WS_LISTENER_PROPERTY_CHANNEL_BINDING:
 580         if (!buf || size != sizeof(listener->binding)) hr = E_INVALIDARG;
 581         else *(WS_CHANNEL_BINDING *)buf = listener->binding;
 582         break;
 583
 584     default:
 585         hr = prop_get( listener->prop, listener->prop_count, id, buf, size );
 586     }
 587
 588     LeaveCriticalSection( &listener->cs );
 589     return hr;
 590 }
 591
 592 /**************************************************************************
 593  *          WsSetListenerProperty               [webservices.@]
 594  */
 595 HRESULT WINAPI WsSetListenerProperty( WS_LISTENER *handle, WS_LISTENER_PROPERTY_ID id, const void *value,
 596                                       ULONG size, WS_ERROR *error )
 597 {
 598     struct listener *listener = (struct listener *)handle;
 599     HRESULT hr;
 600
 601     TRACE( "%p %u %p %u\n", handle, id, value, size );
 602     if (error) FIXME( "ignoring error parameter\n" );
 603
 604     if (!listener) return E_INVALIDARG;
 605
 606     EnterCriticalSection( &listener->cs );
 607
 608     if (listener->magic != LISTENER_MAGIC)
 609     {
 610         LeaveCriticalSection( &listener->cs );
 611         return E_INVALIDARG;
 612     }
 613
 614     hr = prop_set( listener->prop, listener->prop_count, id, value, size );
 615
 616     LeaveCriticalSection( &listener->cs );
 617     return hr;
 618 }
 619
 620 /**************************************************************************
 621  *          WsAcceptChannel             [webservices.@]
 622  */
 623 HRESULT WINAPI WsAcceptChannel( WS_LISTENER *handle, WS_CHANNEL *channel_handle, const WS_ASYNC_CONTEXT *ctx,
 624                                 WS_ERROR *error )
 625 {
 626     struct listener *listener = (struct listener *)handle;
 627     HRESULT hr = E_NOTIMPL;
 628     HANDLE wait, cancel;
 629
 630     TRACE( "%p %p %p %p\n", handle, channel_handle, ctx, error );
 631     if (error) FIXME( "ignoring error parameter\n" );
 632     if (ctx) FIXME( "ignoring ctx parameter\n" );
 633
 634     if (!listener || !channel_handle) return E_INVALIDARG;
 635
 636     EnterCriticalSection( &listener->cs );
 637
 638     if (listener->magic != LISTENER_MAGIC)
 639     {
 640         LeaveCriticalSection( &listener->cs );
 641         return E_INVALIDARG;
 642     }
 643
 644     if (listener->state != WS_LISTENER_STATE_OPEN || listener->channel)
 645     {
 646         LeaveCriticalSection( &listener->cs );
 647         return WS_E_INVALID_OPERATION;
 648     }
 649
 650     wait = listener->wait;
 651     cancel = listener->cancel;
 652     listener->channel = channel_handle;
 653
 654     switch (listener->binding)
 655     {
 656     case WS_TCP_CHANNEL_BINDING:
 657     {
 658         SOCKET socket = listener->u.tcp.socket;
 659
 660         LeaveCriticalSection( &listener->cs );
 661         return channel_accept_tcp( socket, wait, cancel, channel_handle );
 662     }
 663     case WS_UDP_CHANNEL_BINDING:
 664     {
 665         SOCKET socket = listener->u.udp.socket;
 666
 667         LeaveCriticalSection( &listener->cs );
 668         return channel_accept_udp( socket, wait, cancel, channel_handle );
 669     }
 670     default:
 671         FIXME( "listener binding %u not supported\n", listener->binding );
 672         break;
 673     }
 674
 675     LeaveCriticalSection( &listener->cs );
 676     return hr;
 677 }