dlls/dplayx/dplayx_global.c

   1 /* dplayx.dll global data implementation.
   2  *
   3  * Copyright 1999,2000 - Peter Hunnisett
   4  *
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  *
  21  * NOTES:
  22  *  o Implementation of all things which are associated with dplay on
  23  *    the computer - ie shared resources and such. Methods in this
  24  *    compilation unit should not call anything out side this unit
  25  *    excepting base windows services and an interface to start the
  26  *    messaging thread.
  27  *  o Methods that begin with DPLAYX_ are used for dealing with
  28  *    dplayx.dll data which is accessible from all processes.
  29  *
  30  */
  31
  32 #include <stdarg.h>
  33 #include <string.h>
  34
  35 #define NONAMELESSUNION
  36 #define NONAMELESSSTRUCT
  37 #include "wine/debug.h"
  38 #include "windef.h"
  39 #include "winbase.h"
  40 #include "winerror.h"
  41 #include "wine/unicode.h"
  42
  43 #include "wingdi.h"
  44 #include "winuser.h"
  45
  46 #include "dplayx_global.h"
  47 #include "dplayx_messages.h" /* For CreateMessageReceptionThread only */
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(dplay);
  50
  51 /* FIXME: Need to do all that fun other dll referencing type of stuff */
  52
  53 /* Static data for all processes */
  54 static const char lpszDplayxSemaName[] = "WINE_DPLAYX_SM";
  55 static HANDLE hDplayxSema;
  56
  57 static const char lpszDplayxFileMapping[] = "WINE_DPLAYX_FM";
  58 static HANDLE hDplayxSharedMem;
  59
  60 static LPVOID lpSharedStaticData = NULL;
  61
  62
  63 #define DPLAYX_AcquireSemaphore() TRACE( "Waiting for DPLAYX semaphore\n" ); \
  64                                   WaitForSingleObject( hDplayxSema, INFINITE );\
  65                                   TRACE( "Through wait\n" )
  66
  67 #define DPLAYX_ReleaseSemaphore() ReleaseSemaphore( hDplayxSema, 1, NULL ); \
  68                                   TRACE( "DPLAYX Semaphore released\n" ) /* FIXME: Is this correct? */
  69
  70
  71 /* HACK for simple global data right now */
  72 #define dwStaticSharedSize (128 * 1024) /* 128 KBytes */
  73 #define dwDynamicSharedSize (512 * 1024) /* 512 KBytes */
  74 #define dwTotalSharedSize  ( dwStaticSharedSize + dwDynamicSharedSize )
  75
  76
  77 /* FIXME: Is there no easier way? */
  78
  79 /* Pretend the entire dynamic area is carved up into 512 byte blocks.
  80  * Each block has 4 bytes which are 0 unless used */
  81 #define dwBlockSize 512
  82 #define dwMaxBlock  (dwDynamicSharedSize/dwBlockSize)
  83
  84 typedef struct
  85 {
  86   DWORD used;
  87   DWORD data[dwBlockSize-sizeof(DWORD)];
  88 } DPLAYX_MEM_SLICE;
  89
  90 static DPLAYX_MEM_SLICE* lpMemArea;
  91
  92 void DPLAYX_PrivHeapFree( LPVOID addr );
  93 void DPLAYX_PrivHeapFree( LPVOID addr )
  94 {
  95   LPVOID lpAddrStart;
  96   DWORD dwBlockUsed;
  97
  98   /* Handle getting passed a NULL */
  99   if( addr == NULL )
 100   {
 101     return;
 102   }
 103
 104   lpAddrStart = (char*)addr - sizeof(DWORD); /* Find block header */
 105   dwBlockUsed =  ((BYTE*)lpAddrStart - (BYTE*)lpMemArea)/dwBlockSize;
 106
 107   lpMemArea[ dwBlockUsed ].used = 0;
 108 }
 109
 110 /* FIXME: This should be static, but is being used for a hack right now */
 111 LPVOID DPLAYX_PrivHeapAlloc( DWORD flags, DWORD size );
 112 LPVOID DPLAYX_PrivHeapAlloc( DWORD flags, DWORD size )
 113 {
 114   LPVOID lpvArea = NULL;
 115   UINT   uBlockUsed;
 116
 117   if( size > (dwBlockSize - sizeof(DWORD)) )
 118   {
 119     FIXME( "Size exceeded. Request of 0x%08x\n", size );
 120     size = dwBlockSize - sizeof(DWORD);
 121   }
 122
 123   /* Find blank area */
 124   uBlockUsed = 0;
 125   while( ( lpMemArea[ uBlockUsed ].used != 0 ) && ( uBlockUsed <= dwMaxBlock ) ) { uBlockUsed++; }
 126
 127   if( uBlockUsed <= dwMaxBlock )
 128   {
 129     /* Set the area used */
 130     lpMemArea[ uBlockUsed ].used = 1;
 131     lpvArea = &(lpMemArea[ uBlockUsed ].data);
 132   }
 133   else
 134   {
 135     ERR( "No free block found\n" );
 136     return NULL;
 137   }
 138
 139   if( flags & HEAP_ZERO_MEMORY )
 140   {
 141     ZeroMemory( lpvArea, size );
 142   }
 143
 144   return lpvArea;
 145 }
 146
 147 LPSTR DPLAYX_strdupA( DWORD flags, LPCSTR str );
 148 LPSTR DPLAYX_strdupA( DWORD flags, LPCSTR str )
 149 {
 150   LPSTR p = DPLAYX_PrivHeapAlloc( flags, strlen(str) + 1 );
 151   if(p) {
 152     strcpy( p, str );
 153   }
 154   return p;
 155 }
 156
 157 LPWSTR DPLAYX_strdupW( DWORD flags, LPCWSTR str );
 158 LPWSTR DPLAYX_strdupW( DWORD flags, LPCWSTR str )
 159 {
 160   INT len = strlenW(str) + 1;
 161   LPWSTR p = DPLAYX_PrivHeapAlloc( flags, len * sizeof(WCHAR) );
 162   if(p) {
 163     strcpyW( p, str );
 164   }
 165   return p;
 166 }
 167
 168
 169 enum { numSupportedLobbies = 32, numSupportedSessions = 32 };
 170 typedef struct tagDPLAYX_LOBBYDATA
 171 {
 172   /* Points to lpConn + block of contiguous extra memory for dynamic parts
 173    * of the struct directly following
 174    */
 175   LPDPLCONNECTION lpConn;
 176
 177   /* Information for dplobby interfaces */
 178   DWORD           dwAppID;
 179   DWORD           dwAppLaunchedFromID;
 180
 181   /* Should this lobby app send messages to creator at important life
 182    * stages
 183    */
 184   HANDLE hInformOnAppStart;
 185   HANDLE hInformOnAppDeath;
 186   HANDLE hInformOnSettingRead;
 187
 188   /* Sundries */
 189   BOOL bWaitForConnectionSettings;
 190   DWORD dwLobbyMsgThreadId;
 191
 192
 193 } DPLAYX_LOBBYDATA, *LPDPLAYX_LOBBYDATA;
 194
 195 static DPLAYX_LOBBYDATA* lobbyData = NULL;
 196 /* static DPLAYX_LOBBYDATA lobbyData[ numSupportedLobbies ]; */
 197
 198 static DPSESSIONDESC2* sessionData = NULL;
 199 /* static DPSESSIONDESC2* sessionData[ numSupportedSessions ]; */
 200
 201 /* Function prototypes */
 202 static DWORD DPLAYX_SizeOfLobbyDataA( const DPLCONNECTION *lpDplData );
 203 static DWORD DPLAYX_SizeOfLobbyDataW( const DPLCONNECTION *lpDplData );
 204 static void DPLAYX_CopyConnStructA( LPDPLCONNECTION dest, const DPLCONNECTION *src );
 205 static void DPLAYX_CopyConnStructW( LPDPLCONNECTION dest, const DPLCONNECTION *src );
 206 static BOOL DPLAYX_IsAppIdLobbied( DWORD dwAppId, LPDPLAYX_LOBBYDATA* dplData );
 207 static void DPLAYX_InitializeLobbyDataEntry( LPDPLAYX_LOBBYDATA lpData );
 208 static BOOL DPLAYX_CopyIntoSessionDesc2A( LPDPSESSIONDESC2  lpSessionDest,
 209                                           LPCDPSESSIONDESC2 lpSessionSrc );
 210 static BOOL DPLAYX_GetThisLobbyHandles( LPHANDLE lphStart, LPHANDLE lphDeath,
 211                                         LPHANDLE lphConnRead, BOOL bClearSetHandles );
 212
 213
 214
 215 /***************************************************************************
 216  * Called to initialize the global data. This will only be used on the
 217  * loading of the dll
 218  ***************************************************************************/
 219 BOOL DPLAYX_ConstructData(void)
 220 {
 221   SECURITY_ATTRIBUTES s_attrib;
 222   BOOL                bInitializeSharedMemory = FALSE;
 223   LPVOID              lpDesiredMemoryMapStart = (LPVOID)0x50000000;
 224   HANDLE              hInformOnStart;
 225
 226   TRACE( "DPLAYX dll loaded - construct called\n" );
 227
 228   /* Create a semaphore to block access to DPLAYX global data structs */
 229
 230   s_attrib.bInheritHandle       = TRUE;
 231   s_attrib.lpSecurityDescriptor = NULL;
 232   s_attrib.nLength              = sizeof(s_attrib);
 233
 234   hDplayxSema = CreateSemaphoreA( &s_attrib, 0, 1, lpszDplayxSemaName );
 235
 236   /* First instance creates the semaphore. Others just use it */
 237   if( GetLastError() == ERROR_SUCCESS )
 238   {
 239     TRACE( "Semaphore %p created\n", hDplayxSema );
 240
 241     /* The semaphore creator will also build the shared memory */
 242     bInitializeSharedMemory = TRUE;
 243   }
 244   else if ( GetLastError() == ERROR_ALREADY_EXISTS )
 245   {
 246     TRACE( "Found semaphore handle %p\n", hDplayxSema );
 247     DPLAYX_AcquireSemaphore();
 248   }
 249   else
 250   {
 251     ERR( ": semaphore error %d\n", GetLastError() );
 252     return FALSE;
 253   }
 254
 255   SetLastError( ERROR_SUCCESS );
 256
 257   hDplayxSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE,
 258                                          &s_attrib,
 259                                          PAGE_READWRITE | SEC_COMMIT,
 260                                          0,
 261                                          dwTotalSharedSize,
 262                                          lpszDplayxFileMapping );
 263
 264   if( GetLastError() == ERROR_SUCCESS )
 265   {
 266     TRACE( "File mapped %p created\n", hDplayxSharedMem );
 267   }
 268   else if ( GetLastError() == ERROR_ALREADY_EXISTS )
 269   {
 270     TRACE( "Found FileMapping handle %p\n", hDplayxSharedMem );
 271   }
 272   else
 273   {
 274     ERR( ": unable to create shared memory (%d)\n", GetLastError() );
 275     DPLAYX_ReleaseSemaphore();
 276     return FALSE;
 277   }
 278
 279   lpSharedStaticData = MapViewOfFileEx( hDplayxSharedMem,
 280                                         FILE_MAP_WRITE,
 281                                         0, 0, 0, lpDesiredMemoryMapStart );
 282
 283   if( lpSharedStaticData == NULL )
 284   {
 285     ERR( ": unable to map static data into process memory space (%d)\n",
 286          GetLastError() );
 287     DPLAYX_ReleaseSemaphore();
 288     return FALSE;
 289   }
 290   else
 291   {
 292     if( lpDesiredMemoryMapStart == lpSharedStaticData )
 293     {
 294       TRACE( "File mapped to %p\n", lpSharedStaticData );
 295     }
 296     else
 297     {
 298       /* Presently the shared data structures use pointers. If the
 299        * files are no mapped into the same area, the pointers will no
 300        * longer make any sense :(
 301        * FIXME: In the future make the shared data structures have some
 302        *        sort of fixup to make them independent between data spaces.
 303        *        This will also require a rework of the session data stuff.
 304        */
 305       ERR( "File mapped to %p (not %p). Expect failure\n",
 306             lpSharedStaticData, lpDesiredMemoryMapStart );
 307     }
 308   }
 309
 310   /* Dynamic area starts just after the static area */
 311   lpMemArea = (LPVOID)((BYTE*)lpSharedStaticData + dwStaticSharedSize);
 312
 313   /* FIXME: Crude hack */
 314   lobbyData   = (DPLAYX_LOBBYDATA*)lpSharedStaticData;
 315   sessionData = (DPSESSIONDESC2*)((BYTE*)lpSharedStaticData + (dwStaticSharedSize/2));
 316
 317   /* Initialize shared data segments. */
 318   if( bInitializeSharedMemory )
 319   {
 320     UINT i;
 321
 322     TRACE( "Initializing shared memory\n" );
 323
 324     /* Set all lobbies to be "empty" */
 325     for( i=0; i < numSupportedLobbies; i++ )
 326     {
 327       DPLAYX_InitializeLobbyDataEntry( &lobbyData[ i ] );
 328     }
 329
 330     /* Set all sessions to be "empty" */
 331     for( i=0; i < numSupportedSessions; i++ )
 332     {
 333       sessionData[i].dwSize = 0;
 334     }
 335
 336     /* Zero out the dynmaic area */
 337     ZeroMemory( lpMemArea, dwDynamicSharedSize );
 338
 339     /* Just for fun sync the whole data area */
 340     FlushViewOfFile( lpSharedStaticData, dwTotalSharedSize );
 341   }
 342
 343   DPLAYX_ReleaseSemaphore();
 344
 345   /* Everything was created correctly. Signal the lobby client that
 346    * we started up correctly
 347    */
 348   if( DPLAYX_GetThisLobbyHandles( &hInformOnStart, NULL, NULL, FALSE ) &&
 349       hInformOnStart
 350     )
 351   {
 352     BOOL bSuccess;
 353     bSuccess = SetEvent( hInformOnStart );
 354     TRACE( "Signalling lobby app start event %p %s\n",
 355              hInformOnStart, bSuccess ? "succeed" : "failed" );
 356
 357     /* Close out handle */
 358     DPLAYX_GetThisLobbyHandles( &hInformOnStart, NULL, NULL, TRUE );
 359   }
 360
 361   return TRUE;
 362 }
 363
 364 /***************************************************************************
 365  * Called to destroy all global data. This will only be used on the
 366  * unloading of the dll
 367  ***************************************************************************/
 368 BOOL DPLAYX_DestructData(void)
 369 {
 370   HANDLE hInformOnDeath;
 371
 372   TRACE( "DPLAYX dll unloaded - destruct called\n" );
 373
 374   /* If required, inform that this app is dying */
 375   if( DPLAYX_GetThisLobbyHandles( NULL, &hInformOnDeath, NULL, FALSE ) &&
 376       hInformOnDeath
 377     )
 378   {
 379     BOOL bSuccess;
 380     bSuccess = SetEvent( hInformOnDeath );
 381     TRACE( "Signalling lobby app death event %p %s\n",
 382              hInformOnDeath, bSuccess ? "succeed" : "failed" );
 383
 384     /* Close out handle */
 385     DPLAYX_GetThisLobbyHandles( NULL, &hInformOnDeath, NULL, TRUE );
 386   }
 387
 388   /* DO CLEAN UP (LAST) */
 389
 390   /* Delete the semaphore */
 391   CloseHandle( hDplayxSema );
 392
 393   /* Delete shared memory file mapping */
 394   UnmapViewOfFile( lpSharedStaticData );
 395   CloseHandle( hDplayxSharedMem );
 396
 397   return FALSE;
 398 }
 399
 400
 401 void DPLAYX_InitializeLobbyDataEntry( LPDPLAYX_LOBBYDATA lpData )
 402 {
 403   ZeroMemory( lpData, sizeof( *lpData ) );
 404 }
 405
 406 /* NOTE: This must be called with the semaphore acquired.
 407  * TRUE/FALSE with a pointer to it's data returned. Pointer data is
 408  * is only valid if TRUE is returned.
 409  */
 410 BOOL DPLAYX_IsAppIdLobbied( DWORD dwAppID, LPDPLAYX_LOBBYDATA* lplpDplData )
 411 {
 412   UINT i;
 413
 414   *lplpDplData = NULL;
 415
 416   if( dwAppID == 0 )
 417   {
 418     dwAppID = GetCurrentProcessId();
 419     TRACE( "Translated dwAppID == 0 into 0x%08x\n", dwAppID );
 420   }
 421
 422   for( i=0; i < numSupportedLobbies; i++ )
 423   {
 424     if( lobbyData[ i ].dwAppID == dwAppID )
 425     {
 426       /* This process is lobbied */
 427       TRACE( "Found 0x%08x @ %u\n", dwAppID, i );
 428       *lplpDplData = &lobbyData[ i ];
 429       return TRUE;
 430     }
 431   }
 432
 433   return FALSE;
 434 }
 435
 436 /* Reserve a spot for the new appliction. TRUE means success and FALSE failure.  */
 437 BOOL DPLAYX_CreateLobbyApplication( DWORD dwAppID )
 438 {
 439   UINT i;
 440
 441   /* 0 is the marker for unused application data slots */
 442   if( dwAppID == 0 )
 443   {
 444     return FALSE;
 445   }
 446
 447   DPLAYX_AcquireSemaphore();
 448
 449   /* Find an empty space in the list and insert the data */
 450   for( i=0; i < numSupportedLobbies; i++ )
 451   {
 452     if( lobbyData[ i ].dwAppID == 0 )
 453     {
 454       /* This process is now lobbied */
 455       TRACE( "Setting lobbyData[%u] for (0x%08x,0x%08x)\n",
 456               i, dwAppID, GetCurrentProcessId() );
 457
 458       lobbyData[ i ].dwAppID              = dwAppID;
 459       lobbyData[ i ].dwAppLaunchedFromID  = GetCurrentProcessId();
 460
 461       /* FIXME: Where is the best place for this? In interface or here? */
 462       lobbyData[ i ].hInformOnAppStart = 0;
 463       lobbyData[ i ].hInformOnAppDeath = 0;
 464       lobbyData[ i ].hInformOnSettingRead = 0;
 465
 466       DPLAYX_ReleaseSemaphore();
 467       return TRUE;
 468     }
 469   }
 470
 471   ERR( "No empty lobbies\n" );
 472
 473   DPLAYX_ReleaseSemaphore();
 474   return FALSE;
 475 }
 476
 477 /* I'm not sure when I'm going to need this, but here it is */
 478 BOOL DPLAYX_DestroyLobbyApplication( DWORD dwAppID )
 479 {
 480   UINT i;
 481
 482   DPLAYX_AcquireSemaphore();
 483
 484   /* Find an empty space in the list and insert the data */
 485   for( i=0; i < numSupportedLobbies; i++ )
 486   {
 487     if( lobbyData[ i ].dwAppID == dwAppID )
 488     {
 489       /* FIXME: Should free up anything unused. Tisk tisk :0 */
 490       /* Mark this entry unused */
 491       TRACE( "Marking lobbyData[%u] unused\n", i );
 492       DPLAYX_InitializeLobbyDataEntry( &lobbyData[ i ] );
 493
 494       DPLAYX_ReleaseSemaphore();
 495       return TRUE;
 496     }
 497   }
 498
 499   DPLAYX_ReleaseSemaphore();
 500   ERR( "Unable to find global entry for application\n" );
 501   return FALSE;
 502 }
 503
 504 BOOL DPLAYX_SetLobbyHandles( DWORD dwAppID,
 505                              HANDLE hStart, HANDLE hDeath, HANDLE hConnRead )
 506 {
 507   LPDPLAYX_LOBBYDATA lpLData;
 508
 509   /* Need to explictly give lobby application. Can't set for yourself */
 510   if( dwAppID == 0 )
 511   {
 512     return FALSE;
 513   }
 514
 515   DPLAYX_AcquireSemaphore();
 516
 517   if( !DPLAYX_IsAppIdLobbied( dwAppID, &lpLData ) )
 518   {
 519     DPLAYX_ReleaseSemaphore();
 520     return FALSE;
 521   }
 522
 523   lpLData->hInformOnAppStart    = hStart;
 524   lpLData->hInformOnAppDeath    = hDeath;
 525   lpLData->hInformOnSettingRead = hConnRead;
 526
 527   DPLAYX_ReleaseSemaphore();
 528
 529   return TRUE;
 530 }
 531
 532 static BOOL DPLAYX_GetThisLobbyHandles( LPHANDLE lphStart,
 533                                         LPHANDLE lphDeath,
 534                                         LPHANDLE lphConnRead,
 535                                         BOOL     bClearSetHandles )
 536 {
 537   LPDPLAYX_LOBBYDATA lpLData;
 538
 539   DPLAYX_AcquireSemaphore();
 540
 541   if( !DPLAYX_IsAppIdLobbied( 0, &lpLData ) )
 542   {
 543     DPLAYX_ReleaseSemaphore();
 544     return FALSE;
 545   }
 546
 547   if( lphStart != NULL )
 548   {
 549     if( lpLData->hInformOnAppStart == 0 )
 550     {
 551       DPLAYX_ReleaseSemaphore();
 552       return FALSE;
 553     }
 554
 555     *lphStart = lpLData->hInformOnAppStart;
 556
 557     if( bClearSetHandles )
 558     {
 559       CloseHandle( lpLData->hInformOnAppStart );
 560       lpLData->hInformOnAppStart = 0;
 561     }
 562   }
 563
 564   if( lphDeath != NULL )
 565   {
 566     if( lpLData->hInformOnAppDeath == 0 )
 567     {
 568       DPLAYX_ReleaseSemaphore();
 569       return FALSE;
 570     }
 571
 572     *lphDeath = lpLData->hInformOnAppDeath;
 573
 574     if( bClearSetHandles )
 575     {
 576       CloseHandle( lpLData->hInformOnAppDeath );
 577       lpLData->hInformOnAppDeath = 0;
 578     }
 579   }
 580
 581   if( lphConnRead != NULL )
 582   {
 583     if( lpLData->hInformOnSettingRead == 0 )
 584     {
 585       DPLAYX_ReleaseSemaphore();
 586       return FALSE;
 587     }
 588
 589     *lphConnRead = lpLData->hInformOnSettingRead;
 590
 591     if( bClearSetHandles )
 592     {
 593       CloseHandle( lpLData->hInformOnSettingRead );
 594       lpLData->hInformOnSettingRead = 0;
 595     }
 596   }
 597
 598   DPLAYX_ReleaseSemaphore();
 599
 600   return TRUE;
 601 }
 602
 603
 604 HRESULT DPLAYX_GetConnectionSettingsA
 605 ( DWORD dwAppID,
 606   LPVOID lpData,
 607   LPDWORD lpdwDataSize )
 608 {
 609   LPDPLAYX_LOBBYDATA lpDplData;
 610   DWORD              dwRequiredDataSize = 0;
 611   HANDLE             hInformOnSettingRead;
 612
 613   DPLAYX_AcquireSemaphore();
 614
 615   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 616   {
 617     DPLAYX_ReleaseSemaphore();
 618
 619     TRACE( "Application 0x%08x is not lobbied\n", dwAppID );
 620     return DPERR_NOTLOBBIED;
 621   }
 622
 623   dwRequiredDataSize = DPLAYX_SizeOfLobbyDataA( lpDplData->lpConn );
 624
 625   /* Do they want to know the required buffer size or is the provided buffer
 626    * big enough?
 627    */
 628   if ( ( lpData == NULL ) ||
 629        ( *lpdwDataSize < dwRequiredDataSize )
 630      )
 631   {
 632     DPLAYX_ReleaseSemaphore();
 633
 634     *lpdwDataSize = DPLAYX_SizeOfLobbyDataA( lpDplData->lpConn );
 635
 636     return DPERR_BUFFERTOOSMALL;
 637   }
 638
 639   DPLAYX_CopyConnStructA( (LPDPLCONNECTION)lpData, lpDplData->lpConn );
 640
 641   DPLAYX_ReleaseSemaphore();
 642
 643   /* They have gotten the information - signal the event if required */
 644   if( DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, FALSE ) &&
 645       hInformOnSettingRead
 646     )
 647   {
 648     BOOL bSuccess;
 649     bSuccess = SetEvent( hInformOnSettingRead );
 650     TRACE( "Signalling setting read event %p %s\n",
 651              hInformOnSettingRead, bSuccess ? "succeed" : "failed" );
 652
 653     /* Close out handle */
 654     DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, TRUE );
 655   }
 656
 657   return DP_OK;
 658 }
 659
 660 /* Assumption: Enough contiguous space was allocated at dest */
 661 void DPLAYX_CopyConnStructA( LPDPLCONNECTION dest, const DPLCONNECTION *src )
 662 {
 663   BYTE* lpStartOfFreeSpace;
 664
 665   CopyMemory( dest, src, sizeof( DPLCONNECTION ) );
 666
 667   lpStartOfFreeSpace = ((BYTE*)dest) + sizeof( DPLCONNECTION );
 668
 669   /* Copy the LPDPSESSIONDESC2 structure if it exists */
 670   if( src->lpSessionDesc )
 671   {
 672     dest->lpSessionDesc = (LPDPSESSIONDESC2)lpStartOfFreeSpace;
 673     lpStartOfFreeSpace += sizeof( DPSESSIONDESC2 );
 674     CopyMemory( dest->lpSessionDesc, src->lpSessionDesc, sizeof( DPSESSIONDESC2 ) );
 675
 676     /* Session names may or may not exist */
 677     if( src->lpSessionDesc->u1.lpszSessionNameA )
 678     {
 679       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpSessionDesc->u1.lpszSessionNameA );
 680       dest->lpSessionDesc->u1.lpszSessionNameA = (LPSTR)lpStartOfFreeSpace;
 681       lpStartOfFreeSpace +=
 682         strlen( dest->lpSessionDesc->u1.lpszSessionNameA ) + 1;
 683     }
 684
 685     if( src->lpSessionDesc->u2.lpszPasswordA )
 686     {
 687       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpSessionDesc->u2.lpszPasswordA );
 688       dest->lpSessionDesc->u2.lpszPasswordA = (LPSTR)lpStartOfFreeSpace;
 689       lpStartOfFreeSpace +=
 690         strlen( dest->lpSessionDesc->u2.lpszPasswordA ) + 1;
 691     }
 692   }
 693
 694   /* DPNAME structure is optional */
 695   if( src->lpPlayerName )
 696   {
 697     dest->lpPlayerName = (LPDPNAME)lpStartOfFreeSpace;
 698     lpStartOfFreeSpace += sizeof( DPNAME );
 699     CopyMemory( dest->lpPlayerName, src->lpPlayerName, sizeof( DPNAME ) );
 700
 701     if( src->lpPlayerName->u1.lpszShortNameA )
 702     {
 703       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpPlayerName->u1.lpszShortNameA );
 704       dest->lpPlayerName->u1.lpszShortNameA = (LPSTR)lpStartOfFreeSpace;
 705       lpStartOfFreeSpace +=
 706         strlen( dest->lpPlayerName->u1.lpszShortNameA ) + 1;
 707     }
 708
 709     if( src->lpPlayerName->u2.lpszLongNameA )
 710     {
 711       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpPlayerName->u2.lpszLongNameA );
 712       dest->lpPlayerName->u2.lpszLongNameA = (LPSTR)lpStartOfFreeSpace;
 713       lpStartOfFreeSpace +=
 714         strlen( (LPSTR)dest->lpPlayerName->u2.lpszLongName ) + 1 ;
 715     }
 716
 717   }
 718
 719   /* Copy address if it exists */
 720   if( src->lpAddress )
 721   {
 722     dest->lpAddress = (LPVOID)lpStartOfFreeSpace;
 723     CopyMemory( lpStartOfFreeSpace, src->lpAddress, src->dwAddressSize );
 724     /* No need to advance lpStartOfFreeSpace as there is no more "dynamic" data */
 725   }
 726 }
 727
 728 HRESULT DPLAYX_GetConnectionSettingsW
 729 ( DWORD dwAppID,
 730   LPVOID lpData,
 731   LPDWORD lpdwDataSize )
 732 {
 733   LPDPLAYX_LOBBYDATA lpDplData;
 734   DWORD              dwRequiredDataSize = 0;
 735   HANDLE             hInformOnSettingRead;
 736
 737   DPLAYX_AcquireSemaphore();
 738
 739   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 740   {
 741     DPLAYX_ReleaseSemaphore();
 742     return DPERR_NOTLOBBIED;
 743   }
 744
 745   dwRequiredDataSize = DPLAYX_SizeOfLobbyDataW( lpDplData->lpConn );
 746
 747   /* Do they want to know the required buffer size or is the provided buffer
 748    * big enough?
 749    */
 750   if ( ( lpData == NULL ) ||
 751        ( *lpdwDataSize < dwRequiredDataSize )
 752      )
 753   {
 754     DPLAYX_ReleaseSemaphore();
 755
 756     *lpdwDataSize = DPLAYX_SizeOfLobbyDataW( lpDplData->lpConn );
 757
 758     return DPERR_BUFFERTOOSMALL;
 759   }
 760
 761   DPLAYX_CopyConnStructW( (LPDPLCONNECTION)lpData, lpDplData->lpConn );
 762
 763   DPLAYX_ReleaseSemaphore();
 764
 765   /* They have gotten the information - signal the event if required */
 766   if( DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, FALSE ) &&
 767       hInformOnSettingRead
 768     )
 769   {
 770     BOOL bSuccess;
 771     bSuccess = SetEvent( hInformOnSettingRead );
 772     TRACE( "Signalling setting read event %p %s\n",
 773              hInformOnSettingRead, bSuccess ? "succeed" : "failed" );
 774
 775     /* Close out handle */
 776     DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, TRUE );
 777   }
 778
 779   return DP_OK;
 780 }
 781
 782 /* Assumption: Enough contiguous space was allocated at dest */
 783 void DPLAYX_CopyConnStructW( LPDPLCONNECTION dest, const DPLCONNECTION *src )
 784 {
 785   BYTE*              lpStartOfFreeSpace;
 786
 787   CopyMemory( dest, src, sizeof( DPLCONNECTION ) );
 788
 789   lpStartOfFreeSpace = ( (BYTE*)dest) + sizeof( DPLCONNECTION );
 790
 791   /* Copy the LPDPSESSIONDESC2 structure if it exists */
 792   if( src->lpSessionDesc )
 793   {
 794     dest->lpSessionDesc = (LPDPSESSIONDESC2)lpStartOfFreeSpace;
 795     lpStartOfFreeSpace += sizeof( DPSESSIONDESC2 );
 796     CopyMemory( dest->lpSessionDesc, src->lpSessionDesc, sizeof( DPSESSIONDESC2 ) );
 797
 798     /* Session names may or may not exist */
 799     if( src->lpSessionDesc->u1.lpszSessionName )
 800     {
 801       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpSessionDesc->u1.lpszSessionName );
 802       dest->lpSessionDesc->u1.lpszSessionName = (LPWSTR)lpStartOfFreeSpace;
 803       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 804         ( strlenW( dest->lpSessionDesc->u1.lpszSessionName ) + 1 );
 805     }
 806
 807     if( src->lpSessionDesc->u2.lpszPassword )
 808     {
 809       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpSessionDesc->u2.lpszPassword );
 810       dest->lpSessionDesc->u2.lpszPassword = (LPWSTR)lpStartOfFreeSpace;
 811       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 812         ( strlenW( dest->lpSessionDesc->u2.lpszPassword ) + 1 );
 813     }
 814   }
 815
 816   /* DPNAME structure is optional */
 817   if( src->lpPlayerName )
 818   {
 819     dest->lpPlayerName = (LPDPNAME)lpStartOfFreeSpace;
 820     lpStartOfFreeSpace += sizeof( DPNAME );
 821     CopyMemory( dest->lpPlayerName, src->lpPlayerName, sizeof( DPNAME ) );
 822
 823     if( src->lpPlayerName->u1.lpszShortName )
 824     {
 825       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpPlayerName->u1.lpszShortName );
 826       dest->lpPlayerName->u1.lpszShortName = (LPWSTR)lpStartOfFreeSpace;
 827       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 828         ( strlenW( dest->lpPlayerName->u1.lpszShortName ) + 1 );
 829     }
 830
 831     if( src->lpPlayerName->u2.lpszLongName )
 832     {
 833       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpPlayerName->u2.lpszLongName );
 834       dest->lpPlayerName->u2.lpszLongName = (LPWSTR)lpStartOfFreeSpace;
 835       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 836         ( strlenW( dest->lpPlayerName->u2.lpszLongName ) + 1 );
 837     }
 838
 839   }
 840
 841   /* Copy address if it exists */
 842   if( src->lpAddress )
 843   {
 844     dest->lpAddress = (LPVOID)lpStartOfFreeSpace;
 845     CopyMemory( lpStartOfFreeSpace, src->lpAddress, src->dwAddressSize );
 846     /* No need to advance lpStartOfFreeSpace as there is no more "dynamic" data */
 847   }
 848
 849 }
 850
 851 /* Store the structure into the shared data structre. Ensure that allocs for
 852  * variable length strings come from the shared data structure.
 853  * FIXME: We need to free information as well
 854  */
 855 HRESULT DPLAYX_SetConnectionSettingsA
 856 ( DWORD dwFlags,
 857   DWORD dwAppID,
 858   const DPLCONNECTION *lpConn )
 859 {
 860   LPDPLAYX_LOBBYDATA lpDplData;
 861
 862   /* Parameter check */
 863   if( dwFlags || !lpConn )
 864   {
 865     ERR("invalid parameters.\n");
 866     return DPERR_INVALIDPARAMS;
 867   }
 868
 869   /* Store information */
 870   if(  lpConn->dwSize != sizeof(DPLCONNECTION) )
 871   {
 872     ERR(": old/new DPLCONNECTION type? Size=%08x\n", lpConn->dwSize );
 873
 874     return DPERR_INVALIDPARAMS;
 875   }
 876
 877   DPLAYX_AcquireSemaphore();
 878
 879   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 880   {
 881     DPLAYX_ReleaseSemaphore();
 882
 883     return DPERR_NOTLOBBIED;
 884   }
 885
 886   if(  (!lpConn->lpSessionDesc ) ||
 887        ( lpConn->lpSessionDesc->dwSize != sizeof( DPSESSIONDESC2 ) )
 888     )
 889   {
 890     DPLAYX_ReleaseSemaphore();
 891
 892     ERR("DPSESSIONDESC passed in? Size=%u\n", lpConn->lpSessionDesc->dwSize );
 893
 894     return DPERR_INVALIDPARAMS;
 895   }
 896
 897   /* Free the existing memory */
 898   DPLAYX_PrivHeapFree( lpDplData->lpConn );
 899
 900   lpDplData->lpConn = DPLAYX_PrivHeapAlloc( HEAP_ZERO_MEMORY,
 901                                             DPLAYX_SizeOfLobbyDataA( lpConn ) );
 902
 903   DPLAYX_CopyConnStructA( lpDplData->lpConn, lpConn );
 904
 905
 906   DPLAYX_ReleaseSemaphore();
 907
 908   /* FIXME: Send a message - I think */
 909
 910   return DP_OK;
 911 }
 912
 913 /* Store the structure into the shared data structre. Ensure that allocs for
 914  * variable length strings come from the shared data structure.
 915  * FIXME: We need to free information as well
 916  */
 917 HRESULT DPLAYX_SetConnectionSettingsW
 918 ( DWORD dwFlags,
 919   DWORD dwAppID,
 920   const DPLCONNECTION *lpConn )
 921 {
 922   LPDPLAYX_LOBBYDATA lpDplData;
 923
 924   /* Parameter check */
 925   if( dwFlags || !lpConn )
 926   {
 927     ERR("invalid parameters.\n");
 928     return DPERR_INVALIDPARAMS;
 929   }
 930
 931   /* Store information */
 932   if(  lpConn->dwSize != sizeof(DPLCONNECTION) )
 933   {
 934     ERR(": old/new DPLCONNECTION type? Size=%u\n", lpConn->dwSize );
 935
 936     return DPERR_INVALIDPARAMS;
 937   }
 938
 939   DPLAYX_AcquireSemaphore();
 940
 941   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 942   {
 943     DPLAYX_ReleaseSemaphore();
 944
 945     return DPERR_NOTLOBBIED;
 946   }
 947
 948   /* Free the existing memory */
 949   DPLAYX_PrivHeapFree( lpDplData->lpConn );
 950
 951   lpDplData->lpConn = DPLAYX_PrivHeapAlloc( HEAP_ZERO_MEMORY,
 952                                             DPLAYX_SizeOfLobbyDataW( lpConn ) );
 953
 954   DPLAYX_CopyConnStructW( lpDplData->lpConn, lpConn );
 955
 956
 957   DPLAYX_ReleaseSemaphore();
 958
 959   /* FIXME: Send a message - I think */
 960
 961   return DP_OK;
 962 }
 963
 964 DWORD DPLAYX_SizeOfLobbyDataA( const DPLCONNECTION *lpConn )
 965 {
 966   DWORD dwTotalSize = sizeof( DPLCONNECTION );
 967
 968   /* Just a safety check */
 969   if( lpConn == NULL )
 970   {
 971     ERR( "lpConn is NULL\n" );
 972     return 0;
 973   }
 974
 975   if( lpConn->lpSessionDesc != NULL )
 976   {
 977     dwTotalSize += sizeof( DPSESSIONDESC2 );
 978
 979     if( lpConn->lpSessionDesc->u1.lpszSessionNameA )
 980     {
 981       dwTotalSize += strlen( lpConn->lpSessionDesc->u1.lpszSessionNameA ) + 1;
 982     }
 983
 984     if( lpConn->lpSessionDesc->u2.lpszPasswordA )
 985     {
 986       dwTotalSize += strlen( lpConn->lpSessionDesc->u2.lpszPasswordA ) + 1;
 987     }
 988   }
 989
 990   if( lpConn->lpPlayerName != NULL )
 991   {
 992     dwTotalSize += sizeof( DPNAME );
 993
 994     if( lpConn->lpPlayerName->u1.lpszShortNameA )
 995     {
 996       dwTotalSize += strlen( lpConn->lpPlayerName->u1.lpszShortNameA ) + 1;
 997     }
 998
 999     if( lpConn->lpPlayerName->u2.lpszLongNameA )
1000     {
1001       dwTotalSize += strlen( lpConn->lpPlayerName->u2.lpszLongNameA ) + 1;
1002     }
1003
1004   }
1005
1006   dwTotalSize += lpConn->dwAddressSize;
1007
1008   return dwTotalSize;
1009 }
1010
1011 DWORD DPLAYX_SizeOfLobbyDataW( const DPLCONNECTION *lpConn )
1012 {
1013   DWORD dwTotalSize = sizeof( DPLCONNECTION );
1014
1015   /* Just a safety check */
1016   if( lpConn == NULL )
1017   {
1018     ERR( "lpConn is NULL\n" );
1019     return 0;
1020   }
1021
1022   if( lpConn->lpSessionDesc != NULL )
1023   {
1024     dwTotalSize += sizeof( DPSESSIONDESC2 );
1025
1026     if( lpConn->lpSessionDesc->u1.lpszSessionName )
1027     {
1028       dwTotalSize += sizeof( WCHAR ) *
1029         ( strlenW( lpConn->lpSessionDesc->u1.lpszSessionName ) + 1 );
1030     }
1031
1032     if( lpConn->lpSessionDesc->u2.lpszPassword )
1033     {
1034       dwTotalSize += sizeof( WCHAR ) *
1035         ( strlenW( lpConn->lpSessionDesc->u2.lpszPassword ) + 1 );
1036     }
1037   }
1038
1039   if( lpConn->lpPlayerName != NULL )
1040   {
1041     dwTotalSize += sizeof( DPNAME );
1042
1043     if( lpConn->lpPlayerName->u1.lpszShortName )
1044     {
1045       dwTotalSize += sizeof( WCHAR ) *
1046         ( strlenW( lpConn->lpPlayerName->u1.lpszShortName ) + 1 );
1047     }
1048
1049     if( lpConn->lpPlayerName->u2.lpszLongName )
1050     {
1051       dwTotalSize += sizeof( WCHAR ) *
1052         ( strlenW( lpConn->lpPlayerName->u2.lpszLongName ) + 1 );
1053     }
1054
1055   }
1056
1057   dwTotalSize += lpConn->dwAddressSize;
1058
1059   return dwTotalSize;
1060 }
1061
1062
1063
1064 static LPDPSESSIONDESC2 DPLAYX_CopyAndAllocateSessionDesc2A( LPCDPSESSIONDESC2 lpSessionSrc )
1065 {
1066    LPDPSESSIONDESC2 lpSessionDest =
1067      HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof( *lpSessionSrc ) );
1068    DPLAYX_CopyIntoSessionDesc2A( lpSessionDest, lpSessionSrc );
1069
1070    return lpSessionDest;
1071 }
1072
1073 /* Copy an ANSI session desc structure to the given buffer */
1074 BOOL DPLAYX_CopyIntoSessionDesc2A( LPDPSESSIONDESC2  lpSessionDest,
1075                                    LPCDPSESSIONDESC2 lpSessionSrc )
1076 {
1077   CopyMemory( lpSessionDest, lpSessionSrc, sizeof( *lpSessionSrc ) );
1078
1079   if( lpSessionSrc->u1.lpszSessionNameA )
1080   {
1081       if ((lpSessionDest->u1.lpszSessionNameA = HeapAlloc( GetProcessHeap(), 0,
1082                                                              strlen(lpSessionSrc->u1.lpszSessionNameA)+1 )))
1083           strcpy( lpSessionDest->u1.lpszSessionNameA, lpSessionSrc->u1.lpszSessionNameA );
1084   }
1085   if( lpSessionSrc->u2.lpszPasswordA )
1086   {
1087       if ((lpSessionDest->u2.lpszPasswordA = HeapAlloc( GetProcessHeap(), 0,
1088                                                           strlen(lpSessionSrc->u2.lpszPasswordA)+1 )))
1089           strcpy( lpSessionDest->u2.lpszPasswordA, lpSessionSrc->u2.lpszPasswordA );
1090   }
1091
1092   return TRUE;
1093 }
1094
1095 /* Start the index at 0. index will be updated to equal that which should
1096    be passed back into this function for the next element */
1097 LPDPSESSIONDESC2 DPLAYX_CopyAndAllocateLocalSession( UINT* index )
1098 {
1099   for( ; (*index) < numSupportedSessions; (*index)++ )
1100   {
1101     if( sessionData[(*index)].dwSize != 0 )
1102     {
1103       return DPLAYX_CopyAndAllocateSessionDesc2A( &sessionData[(*index)++] );
1104     }
1105   }
1106
1107   /* No more sessions */
1108   return NULL;
1109 }
1110
1111 /* Start the index at 0. index will be updated to equal that which should
1112    be passed back into this function for the next element */
1113 BOOL DPLAYX_CopyLocalSession( UINT* index, LPDPSESSIONDESC2 lpsd )
1114 {
1115   for( ; (*index) < numSupportedSessions; (*index)++ )
1116   {
1117     if( sessionData[(*index)].dwSize != 0 )
1118     {
1119       return DPLAYX_CopyIntoSessionDesc2A( lpsd, &sessionData[(*index)++] );
1120     }
1121   }
1122
1123   /* No more sessions */
1124   return FALSE;
1125 }
1126
1127 void DPLAYX_SetLocalSession( LPCDPSESSIONDESC2 lpsd )
1128 {
1129   UINT i;
1130
1131   /* FIXME: Is this an error if it exists already? */
1132
1133   /* Crude/wrong implementation for now. Just always add to first empty spot */
1134   for( i=0; i < numSupportedSessions; i++ )
1135   {
1136     /* Is this one empty? */
1137     if( sessionData[i].dwSize == 0 )
1138     {
1139       DPLAYX_CopyIntoSessionDesc2A( &sessionData[i], lpsd );
1140       break;
1141     }
1142   }
1143
1144 }
1145
1146 BOOL DPLAYX_WaitForConnectionSettings( BOOL bWait )
1147 {
1148   LPDPLAYX_LOBBYDATA lpLobbyData;
1149
1150   DPLAYX_AcquireSemaphore();
1151
1152   if( !DPLAYX_IsAppIdLobbied( 0, &lpLobbyData ) )
1153   {
1154     DPLAYX_ReleaseSemaphore();
1155     return FALSE;
1156   }
1157
1158   lpLobbyData->bWaitForConnectionSettings = bWait;
1159
1160   DPLAYX_ReleaseSemaphore();
1161
1162   return TRUE;
1163 }
1164
1165 BOOL DPLAYX_AnyLobbiesWaitingForConnSettings(void)
1166 {
1167   UINT i;
1168   BOOL bFound = FALSE;
1169
1170   DPLAYX_AcquireSemaphore();
1171
1172   for( i=0; i < numSupportedLobbies; i++ )
1173   {
1174     if( ( lobbyData[ i ].dwAppID != 0 ) &&            /* lobby initialized */
1175         ( lobbyData[ i ].bWaitForConnectionSettings ) /* Waiting */
1176       )
1177     {
1178       bFound = TRUE;
1179       break;
1180     }
1181   }
1182
1183   DPLAYX_ReleaseSemaphore();
1184
1185   return bFound;
1186 }
1187
1188 BOOL DPLAYX_SetLobbyMsgThreadId( DWORD dwAppId, DWORD dwThreadId )
1189 {
1190   LPDPLAYX_LOBBYDATA lpLobbyData;
1191
1192   DPLAYX_AcquireSemaphore();
1193
1194   if( !DPLAYX_IsAppIdLobbied( dwAppId, &lpLobbyData ) )
1195   {
1196     DPLAYX_ReleaseSemaphore();
1197     return FALSE;
1198   }
1199
1200   lpLobbyData->dwLobbyMsgThreadId = dwThreadId;
1201
1202   DPLAYX_ReleaseSemaphore();
1203
1204   return TRUE;
1205 }
1206
1207 /* NOTE: This is potentially not thread safe. You are not guaranteed to end up
1208          with the correct string printed in the case where the HRESULT is not
1209          known. You will just get the last hr passed in. This can change
1210          over time if this method is used a lot :) */
1211 LPCSTR DPLAYX_HresultToString(HRESULT hr)
1212 {
1213   static char szTempStr[12];
1214
1215   switch (hr)
1216   {
1217     case DP_OK:
1218       return "DP_OK";
1219     case DPERR_ALREADYINITIALIZED:
1220       return "DPERR_ALREADYINITIALIZED";
1221     case DPERR_ACCESSDENIED:
1222       return "DPERR_ACCESSDENIED";
1223     case DPERR_ACTIVEPLAYERS:
1224       return "DPERR_ACTIVEPLAYERS";
1225     case DPERR_BUFFERTOOSMALL:
1226       return "DPERR_BUFFERTOOSMALL";
1227     case DPERR_CANTADDPLAYER:
1228       return "DPERR_CANTADDPLAYER";
1229     case DPERR_CANTCREATEGROUP:
1230       return "DPERR_CANTCREATEGROUP";
1231     case DPERR_CANTCREATEPLAYER:
1232       return "DPERR_CANTCREATEPLAYER";
1233     case DPERR_CANTCREATESESSION:
1234       return "DPERR_CANTCREATESESSION";
1235     case DPERR_CAPSNOTAVAILABLEYET:
1236       return "DPERR_CAPSNOTAVAILABLEYET";
1237     case DPERR_EXCEPTION:
1238       return "DPERR_EXCEPTION";
1239     case DPERR_GENERIC:
1240       return "DPERR_GENERIC";
1241     case DPERR_INVALIDFLAGS:
1242       return "DPERR_INVALIDFLAGS";
1243     case DPERR_INVALIDOBJECT:
1244       return "DPERR_INVALIDOBJECT";
1245     case DPERR_INVALIDPARAMS:
1246       return "DPERR_INVALIDPARAMS";
1247     case DPERR_INVALIDPLAYER:
1248       return "DPERR_INVALIDPLAYER";
1249     case DPERR_INVALIDGROUP:
1250       return "DPERR_INVALIDGROUP";
1251     case DPERR_NOCAPS:
1252       return "DPERR_NOCAPS";
1253     case DPERR_NOCONNECTION:
1254       return "DPERR_NOCONNECTION";
1255     case DPERR_OUTOFMEMORY:
1256       return "DPERR_OUTOFMEMORY";
1257     case DPERR_NOMESSAGES:
1258       return "DPERR_NOMESSAGES";
1259     case DPERR_NONAMESERVERFOUND:
1260       return "DPERR_NONAMESERVERFOUND";
1261     case DPERR_NOPLAYERS:
1262       return "DPERR_NOPLAYERS";
1263     case DPERR_NOSESSIONS:
1264       return "DPERR_NOSESSIONS";
1265     case DPERR_PENDING:
1266       return "DPERR_PENDING";
1267     case DPERR_SENDTOOBIG:
1268       return "DPERR_SENDTOOBIG";
1269     case DPERR_TIMEOUT:
1270       return "DPERR_TIMEOUT";
1271     case DPERR_UNAVAILABLE:
1272       return "DPERR_UNAVAILABLE";
1273     case DPERR_UNSUPPORTED:
1274       return "DPERR_UNSUPPORTED";
1275     case DPERR_BUSY:
1276       return "DPERR_BUSY";
1277     case DPERR_USERCANCEL:
1278       return "DPERR_USERCANCEL";
1279     case DPERR_NOINTERFACE:
1280       return "DPERR_NOINTERFACE";
1281     case DPERR_CANNOTCREATESERVER:
1282       return "DPERR_CANNOTCREATESERVER";
1283     case DPERR_PLAYERLOST:
1284       return "DPERR_PLAYERLOST";
1285     case DPERR_SESSIONLOST:
1286       return "DPERR_SESSIONLOST";
1287     case DPERR_UNINITIALIZED:
1288       return "DPERR_UNINITIALIZED";
1289     case DPERR_NONEWPLAYERS:
1290       return "DPERR_NONEWPLAYERS";
1291     case DPERR_INVALIDPASSWORD:
1292       return "DPERR_INVALIDPASSWORD";
1293     case DPERR_CONNECTING:
1294       return "DPERR_CONNECTING";
1295     case DPERR_CONNECTIONLOST:
1296       return "DPERR_CONNECTIONLOST";
1297     case DPERR_UNKNOWNMESSAGE:
1298       return "DPERR_UNKNOWNMESSAGE";
1299     case DPERR_CANCELFAILED:
1300       return "DPERR_CANCELFAILED";
1301     case DPERR_INVALIDPRIORITY:
1302       return "DPERR_INVALIDPRIORITY";
1303     case DPERR_NOTHANDLED:
1304       return "DPERR_NOTHANDLED";
1305     case DPERR_CANCELLED:
1306       return "DPERR_CANCELLED";
1307     case DPERR_ABORTED:
1308       return "DPERR_ABORTED";
1309     case DPERR_BUFFERTOOLARGE:
1310       return "DPERR_BUFFERTOOLARGE";
1311     case DPERR_CANTCREATEPROCESS:
1312       return "DPERR_CANTCREATEPROCESS";
1313     case DPERR_APPNOTSTARTED:
1314       return "DPERR_APPNOTSTARTED";
1315     case DPERR_INVALIDINTERFACE:
1316       return "DPERR_INVALIDINTERFACE";
1317     case DPERR_NOSERVICEPROVIDER:
1318       return "DPERR_NOSERVICEPROVIDER";
1319     case DPERR_UNKNOWNAPPLICATION:
1320       return "DPERR_UNKNOWNAPPLICATION";
1321     case DPERR_NOTLOBBIED:
1322       return "DPERR_NOTLOBBIED";
1323     case DPERR_SERVICEPROVIDERLOADED:
1324       return "DPERR_SERVICEPROVIDERLOADED";
1325     case DPERR_ALREADYREGISTERED:
1326       return "DPERR_ALREADYREGISTERED";
1327     case DPERR_NOTREGISTERED:
1328       return "DPERR_NOTREGISTERED";
1329     case DPERR_AUTHENTICATIONFAILED:
1330       return "DPERR_AUTHENTICATIONFAILED";
1331     case DPERR_CANTLOADSSPI:
1332       return "DPERR_CANTLOADSSPI";
1333     case DPERR_ENCRYPTIONFAILED:
1334       return "DPERR_ENCRYPTIONFAILED";
1335     case DPERR_SIGNFAILED:
1336       return "DPERR_SIGNFAILED";
1337     case DPERR_CANTLOADSECURITYPACKAGE:
1338       return "DPERR_CANTLOADSECURITYPACKAGE";
1339     case DPERR_ENCRYPTIONNOTSUPPORTED:
1340       return "DPERR_ENCRYPTIONNOTSUPPORTED";
1341     case DPERR_CANTLOADCAPI:
1342       return "DPERR_CANTLOADCAPI";
1343     case DPERR_NOTLOGGEDIN:
1344       return "DPERR_NOTLOGGEDIN";
1345     case DPERR_LOGONDENIED:
1346       return "DPERR_LOGONDENIED";
1347     default:
1348       /* For errors not in the list, return HRESULT as a string
1349          This part is not thread safe */
1350       WARN( "Unknown error 0x%08x\n", hr );
1351       wsprintfA( szTempStr, "0x%08lx", hr );
1352       return szTempStr;
1353   }
1354 }