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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  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 LPCSTR lpszDplayxSemaName = "WINE_DPLAYX_SM";
  55 static HANDLE hDplayxSema;
  56
  57 static LPCSTR lpszDplayxFileMapping = "WINE_DPLAYX_FM";
  58 static HANDLE hDplayxSharedMem;
  59
  60 static LPVOID lpSharedStaticData = NULL;
  61
  62
  63 #define DPLAYX_AquireSemaphore()  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%08lx\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 DWORD DPLAYX_SizeOfLobbyDataA( LPDPLCONNECTION lpDplData );
 203 DWORD DPLAYX_SizeOfLobbyDataW( LPDPLCONNECTION lpDplData );
 204 void DPLAYX_CopyConnStructA( LPDPLCONNECTION dest, LPDPLCONNECTION src );
 205 void DPLAYX_CopyConnStructW( LPDPLCONNECTION dest, LPDPLCONNECTION src );
 206 BOOL DPLAYX_IsAppIdLobbied( DWORD dwAppId, LPDPLAYX_LOBBYDATA* dplData );
 207 void DPLAYX_InitializeLobbyDataEntry( LPDPLAYX_LOBBYDATA lpData );
 208 BOOL DPLAYX_CopyIntoSessionDesc2A( LPDPSESSIONDESC2  lpSessionDest,
 209                                    LPCDPSESSIONDESC2 lpSessionSrc );
 210
 211
 212
 213 /***************************************************************************
 214  * Called to initialize the global data. This will only be used on the
 215  * loading of the dll
 216  ***************************************************************************/
 217 BOOL DPLAYX_ConstructData(void)
 218 {
 219   SECURITY_ATTRIBUTES s_attrib;
 220   BOOL                bInitializeSharedMemory = FALSE;
 221   LPVOID              lpDesiredMemoryMapStart = (LPVOID)0x50000000;
 222   HANDLE              hInformOnStart;
 223
 224   TRACE( "DPLAYX dll loaded - construct called\n" );
 225
 226   /* Create a semaphore to block access to DPLAYX global data structs */
 227
 228   s_attrib.bInheritHandle       = TRUE;
 229   s_attrib.lpSecurityDescriptor = NULL;
 230   s_attrib.nLength              = sizeof(s_attrib);
 231
 232   hDplayxSema = CreateSemaphoreA( &s_attrib, 1, 1, lpszDplayxSemaName );
 233
 234   /* First instance creates the semaphore. Others just use it */
 235   if( GetLastError() == ERROR_SUCCESS )
 236   {
 237     TRACE( "Semaphore %p created\n", hDplayxSema );
 238
 239     /* The semaphore creator will also build the shared memory */
 240     bInitializeSharedMemory = TRUE;
 241   }
 242   else if ( GetLastError() == ERROR_ALREADY_EXISTS )
 243   {
 244     TRACE( "Found semaphore handle %p\n", hDplayxSema );
 245   }
 246   else
 247   {
 248     ERR( ": semaphore error %ld\n", GetLastError() );
 249     return FALSE;
 250   }
 251
 252   SetLastError( ERROR_SUCCESS );
 253
 254   DPLAYX_AquireSemaphore();
 255
 256   hDplayxSharedMem = CreateFileMappingA( INVALID_HANDLE_VALUE,
 257                                          &s_attrib,
 258                                          PAGE_READWRITE | SEC_COMMIT,
 259                                          0,
 260                                          dwTotalSharedSize,
 261                                          lpszDplayxFileMapping );
 262
 263   if( GetLastError() == ERROR_SUCCESS )
 264   {
 265     TRACE( "File mapped %p created\n", hDplayxSharedMem );
 266   }
 267   else if ( GetLastError() == ERROR_ALREADY_EXISTS )
 268   {
 269     TRACE( "Found FileMapping handle %p\n", hDplayxSharedMem );
 270   }
 271   else
 272   {
 273     ERR( ": unable to create shared memory (%ld)\n", GetLastError() );
 274     return FALSE;
 275   }
 276
 277   lpSharedStaticData = MapViewOfFileEx( hDplayxSharedMem,
 278                                         FILE_MAP_WRITE,
 279                                         0, 0, 0, lpDesiredMemoryMapStart );
 280
 281   if( lpSharedStaticData == NULL )
 282   {
 283     ERR( ": unable to map static data into process memory space (%ld)\n",
 284          GetLastError() );
 285     return FALSE;
 286   }
 287   else
 288   {
 289     if( lpDesiredMemoryMapStart == lpSharedStaticData )
 290     {
 291       TRACE( "File mapped to %p\n", lpSharedStaticData );
 292     }
 293     else
 294     {
 295       /* Presently the shared data structures use pointers. If the
 296        * files are no mapped into the same area, the pointers will no
 297        * longer make any sense :(
 298        * FIXME: In the future make the shared data structures have some
 299        *        sort of fixup to make them independent between data spaces.
 300        *        This will also require a rework of the session data stuff.
 301        */
 302       ERR( "File mapped to %p (not %p). Expect failure\n",
 303             lpSharedStaticData, lpDesiredMemoryMapStart );
 304     }
 305   }
 306
 307   /* Dynamic area starts just after the static area */
 308   lpMemArea = (LPVOID)((BYTE*)lpSharedStaticData + dwStaticSharedSize);
 309
 310   /* FIXME: Crude hack */
 311   lobbyData   = (DPLAYX_LOBBYDATA*)lpSharedStaticData;
 312   sessionData = (DPSESSIONDESC2*)((BYTE*)lpSharedStaticData + (dwStaticSharedSize/2));
 313
 314   /* Initialize shared data segments. */
 315   if( bInitializeSharedMemory )
 316   {
 317     UINT i;
 318
 319     TRACE( "Initializing shared memory\n" );
 320
 321     /* Set all lobbies to be "empty" */
 322     for( i=0; i < numSupportedLobbies; i++ )
 323     {
 324       DPLAYX_InitializeLobbyDataEntry( &lobbyData[ i ] );
 325     }
 326
 327     /* Set all sessions to be "empty" */
 328     for( i=0; i < numSupportedSessions; i++ )
 329     {
 330       sessionData[i].dwSize = 0;
 331     }
 332
 333     /* Zero out the dynmaic area */
 334     ZeroMemory( lpMemArea, dwDynamicSharedSize );
 335
 336     /* Just for fun sync the whole data area */
 337     FlushViewOfFile( lpSharedStaticData, dwTotalSharedSize );
 338   }
 339
 340   DPLAYX_ReleaseSemaphore();
 341
 342   /* Everything was created correctly. Signal the lobby client that
 343    * we started up correctly
 344    */
 345   if( DPLAYX_GetThisLobbyHandles( &hInformOnStart, NULL, NULL, FALSE ) &&
 346       hInformOnStart
 347     )
 348   {
 349     BOOL bSuccess;
 350     bSuccess = SetEvent( hInformOnStart );
 351     TRACE( "Signalling lobby app start event %p %s\n",
 352              hInformOnStart, bSuccess ? "succeed" : "failed" );
 353
 354     /* Close out handle */
 355     DPLAYX_GetThisLobbyHandles( &hInformOnStart, NULL, NULL, TRUE );
 356   }
 357
 358   return TRUE;
 359 }
 360
 361 /***************************************************************************
 362  * Called to destroy all global data. This will only be used on the
 363  * unloading of the dll
 364  ***************************************************************************/
 365 BOOL DPLAYX_DestructData(void)
 366 {
 367   HANDLE hInformOnDeath;
 368
 369   TRACE( "DPLAYX dll unloaded - destruct called\n" );
 370
 371   /* If required, inform that this app is dying */
 372   if( DPLAYX_GetThisLobbyHandles( NULL, &hInformOnDeath, NULL, FALSE ) &&
 373       hInformOnDeath
 374     )
 375   {
 376     BOOL bSuccess;
 377     bSuccess = SetEvent( hInformOnDeath );
 378     TRACE( "Signalling lobby app death event %p %s\n",
 379              hInformOnDeath, bSuccess ? "succeed" : "failed" );
 380
 381     /* Close out handle */
 382     DPLAYX_GetThisLobbyHandles( NULL, &hInformOnDeath, NULL, TRUE );
 383   }
 384
 385   /* DO CLEAN UP (LAST) */
 386
 387   /* Delete the semaphore */
 388   CloseHandle( hDplayxSema );
 389
 390   /* Delete shared memory file mapping */
 391   UnmapViewOfFile( lpSharedStaticData );
 392   CloseHandle( hDplayxSharedMem );
 393
 394   return FALSE;
 395 }
 396
 397
 398 void DPLAYX_InitializeLobbyDataEntry( LPDPLAYX_LOBBYDATA lpData )
 399 {
 400   ZeroMemory( lpData, sizeof( *lpData ) );
 401 }
 402
 403 /* NOTE: This must be called with the semaphore aquired.
 404  * TRUE/FALSE with a pointer to it's data returned. Pointer data is
 405  * is only valid if TRUE is returned.
 406  */
 407 BOOL DPLAYX_IsAppIdLobbied( DWORD dwAppID, LPDPLAYX_LOBBYDATA* lplpDplData )
 408 {
 409   UINT i;
 410
 411   *lplpDplData = NULL;
 412
 413   if( dwAppID == 0 )
 414   {
 415     dwAppID = GetCurrentProcessId();
 416     TRACE( "Translated dwAppID == 0 into 0x%08lx\n", dwAppID );
 417   }
 418
 419   for( i=0; i < numSupportedLobbies; i++ )
 420   {
 421     if( lobbyData[ i ].dwAppID == dwAppID )
 422     {
 423       /* This process is lobbied */
 424       TRACE( "Found 0x%08lx @ %u\n", dwAppID, i );
 425       *lplpDplData = &lobbyData[ i ];
 426       return TRUE;
 427     }
 428   }
 429
 430   return FALSE;
 431 }
 432
 433 /* Reserve a spot for the new appliction. TRUE means success and FALSE failure.  */
 434 BOOL DPLAYX_CreateLobbyApplication( DWORD dwAppID )
 435 {
 436   UINT i;
 437
 438   /* 0 is the marker for unused application data slots */
 439   if( dwAppID == 0 )
 440   {
 441     return FALSE;
 442   }
 443
 444   DPLAYX_AquireSemaphore();
 445
 446   /* Find an empty space in the list and insert the data */
 447   for( i=0; i < numSupportedLobbies; i++ )
 448   {
 449     if( lobbyData[ i ].dwAppID == 0 )
 450     {
 451       /* This process is now lobbied */
 452       TRACE( "Setting lobbyData[%u] for (0x%08lx,0x%08lx)\n",
 453               i, dwAppID, GetCurrentProcessId() );
 454
 455       lobbyData[ i ].dwAppID              = dwAppID;
 456       lobbyData[ i ].dwAppLaunchedFromID  = GetCurrentProcessId();
 457
 458       /* FIXME: Where is the best place for this? In interface or here? */
 459       lobbyData[ i ].hInformOnAppStart = 0;
 460       lobbyData[ i ].hInformOnAppDeath = 0;
 461       lobbyData[ i ].hInformOnSettingRead = 0;
 462
 463       DPLAYX_ReleaseSemaphore();
 464       return TRUE;
 465     }
 466   }
 467
 468   ERR( "No empty lobbies\n" );
 469
 470   DPLAYX_ReleaseSemaphore();
 471   return FALSE;
 472 }
 473
 474 /* I'm not sure when I'm going to need this, but here it is */
 475 BOOL DPLAYX_DestroyLobbyApplication( DWORD dwAppID )
 476 {
 477   UINT i;
 478
 479   DPLAYX_AquireSemaphore();
 480
 481   /* Find an empty space in the list and insert the data */
 482   for( i=0; i < numSupportedLobbies; i++ )
 483   {
 484     if( lobbyData[ i ].dwAppID == dwAppID )
 485     {
 486       /* FIXME: Should free up anything unused. Tisk tisk :0 */
 487       /* Mark this entry unused */
 488       TRACE( "Marking lobbyData[%u] unused\n", i );
 489       DPLAYX_InitializeLobbyDataEntry( &lobbyData[ i ] );
 490
 491       DPLAYX_ReleaseSemaphore();
 492       return TRUE;
 493     }
 494   }
 495
 496   DPLAYX_ReleaseSemaphore();
 497   ERR( "Unable to find global entry for application\n" );
 498   return FALSE;
 499 }
 500
 501 BOOL DPLAYX_SetLobbyHandles( DWORD dwAppID,
 502                              HANDLE hStart, HANDLE hDeath, HANDLE hConnRead )
 503 {
 504   LPDPLAYX_LOBBYDATA lpLData;
 505
 506   /* Need to explictly give lobby application. Can't set for yourself */
 507   if( dwAppID == 0 )
 508   {
 509     return FALSE;
 510   }
 511
 512   DPLAYX_AquireSemaphore();
 513
 514   if( !DPLAYX_IsAppIdLobbied( dwAppID, &lpLData ) )
 515   {
 516     DPLAYX_ReleaseSemaphore();
 517     return FALSE;
 518   }
 519
 520   lpLData->hInformOnAppStart    = hStart;
 521   lpLData->hInformOnAppDeath    = hDeath;
 522   lpLData->hInformOnSettingRead = hConnRead;
 523
 524   DPLAYX_ReleaseSemaphore();
 525
 526   return TRUE;
 527 }
 528
 529 BOOL DPLAYX_GetThisLobbyHandles( LPHANDLE lphStart,
 530                                  LPHANDLE lphDeath,
 531                                  LPHANDLE lphConnRead,
 532                                  BOOL     bClearSetHandles )
 533 {
 534   LPDPLAYX_LOBBYDATA lpLData;
 535
 536   DPLAYX_AquireSemaphore();
 537
 538   if( !DPLAYX_IsAppIdLobbied( 0, &lpLData ) )
 539   {
 540     DPLAYX_ReleaseSemaphore();
 541     return FALSE;
 542   }
 543
 544   if( lphStart != NULL )
 545   {
 546     if( lpLData->hInformOnAppStart == 0 )
 547     {
 548       DPLAYX_ReleaseSemaphore();
 549       return FALSE;
 550     }
 551
 552     *lphStart = lpLData->hInformOnAppStart;
 553
 554     if( bClearSetHandles )
 555     {
 556       CloseHandle( lpLData->hInformOnAppStart );
 557       lpLData->hInformOnAppStart = 0;
 558     }
 559   }
 560
 561   if( lphDeath != NULL )
 562   {
 563     if( lpLData->hInformOnAppDeath == 0 )
 564     {
 565       DPLAYX_ReleaseSemaphore();
 566       return FALSE;
 567     }
 568
 569     *lphDeath = lpLData->hInformOnAppDeath;
 570
 571     if( bClearSetHandles )
 572     {
 573       CloseHandle( lpLData->hInformOnAppDeath );
 574       lpLData->hInformOnAppDeath = 0;
 575     }
 576   }
 577
 578   if( lphConnRead != NULL )
 579   {
 580     if( lpLData->hInformOnSettingRead == 0 )
 581     {
 582       DPLAYX_ReleaseSemaphore();
 583       return FALSE;
 584     }
 585
 586     *lphConnRead = lpLData->hInformOnSettingRead;
 587
 588     if( bClearSetHandles )
 589     {
 590       CloseHandle( lpLData->hInformOnSettingRead );
 591       lpLData->hInformOnSettingRead = 0;
 592     }
 593   }
 594
 595   DPLAYX_ReleaseSemaphore();
 596
 597   return TRUE;
 598 }
 599
 600
 601 HRESULT DPLAYX_GetConnectionSettingsA
 602 ( DWORD dwAppID,
 603   LPVOID lpData,
 604   LPDWORD lpdwDataSize )
 605 {
 606   LPDPLAYX_LOBBYDATA lpDplData;
 607   DWORD              dwRequiredDataSize = 0;
 608   HANDLE             hInformOnSettingRead;
 609
 610   DPLAYX_AquireSemaphore();
 611
 612   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 613   {
 614     DPLAYX_ReleaseSemaphore();
 615
 616     TRACE( "Application 0x%08lx is not lobbied\n", dwAppID );
 617     return DPERR_NOTLOBBIED;
 618   }
 619
 620   dwRequiredDataSize = DPLAYX_SizeOfLobbyDataA( lpDplData->lpConn );
 621
 622   /* Do they want to know the required buffer size or is the provided buffer
 623    * big enough?
 624    */
 625   if ( ( lpData == NULL ) ||
 626        ( *lpdwDataSize < dwRequiredDataSize )
 627      )
 628   {
 629     DPLAYX_ReleaseSemaphore();
 630
 631     *lpdwDataSize = DPLAYX_SizeOfLobbyDataA( lpDplData->lpConn );
 632
 633     return DPERR_BUFFERTOOSMALL;
 634   }
 635
 636   DPLAYX_CopyConnStructA( (LPDPLCONNECTION)lpData, lpDplData->lpConn );
 637
 638   DPLAYX_ReleaseSemaphore();
 639
 640   /* They have gotten the information - signal the event if required */
 641   if( DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, FALSE ) &&
 642       hInformOnSettingRead
 643     )
 644   {
 645     BOOL bSuccess;
 646     bSuccess = SetEvent( hInformOnSettingRead );
 647     TRACE( "Signalling setting read event %p %s\n",
 648              hInformOnSettingRead, bSuccess ? "succeed" : "failed" );
 649
 650     /* Close out handle */
 651     DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, TRUE );
 652   }
 653
 654   return DP_OK;
 655 }
 656
 657 /* Assumption: Enough contiguous space was allocated at dest */
 658 void DPLAYX_CopyConnStructA( LPDPLCONNECTION dest, LPDPLCONNECTION src )
 659 {
 660   BYTE* lpStartOfFreeSpace;
 661
 662   CopyMemory( dest, src, sizeof( DPLCONNECTION ) );
 663
 664   lpStartOfFreeSpace = ((BYTE*)dest) + sizeof( DPLCONNECTION );
 665
 666   /* Copy the LPDPSESSIONDESC2 structure if it exists */
 667   if( src->lpSessionDesc )
 668   {
 669     dest->lpSessionDesc = (LPDPSESSIONDESC2)lpStartOfFreeSpace;
 670     lpStartOfFreeSpace += sizeof( DPSESSIONDESC2 );
 671     CopyMemory( dest->lpSessionDesc, src->lpSessionDesc, sizeof( DPSESSIONDESC2 ) );
 672
 673     /* Session names may or may not exist */
 674     if( src->lpSessionDesc->u1.lpszSessionNameA )
 675     {
 676       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpSessionDesc->u1.lpszSessionNameA );
 677       dest->lpSessionDesc->u1.lpszSessionNameA = (LPSTR)lpStartOfFreeSpace;
 678       lpStartOfFreeSpace +=
 679         strlen( (LPSTR)dest->lpSessionDesc->u1.lpszSessionNameA ) + 1;
 680     }
 681
 682     if( src->lpSessionDesc->u2.lpszPasswordA )
 683     {
 684       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpSessionDesc->u2.lpszPasswordA );
 685       dest->lpSessionDesc->u2.lpszPasswordA = (LPSTR)lpStartOfFreeSpace;
 686       lpStartOfFreeSpace +=
 687         strlen( (LPSTR)dest->lpSessionDesc->u2.lpszPasswordA ) + 1;
 688     }
 689   }
 690
 691   /* DPNAME structure is optional */
 692   if( src->lpPlayerName )
 693   {
 694     dest->lpPlayerName = (LPDPNAME)lpStartOfFreeSpace;
 695     lpStartOfFreeSpace += sizeof( DPNAME );
 696     CopyMemory( dest->lpPlayerName, src->lpPlayerName, sizeof( DPNAME ) );
 697
 698     if( src->lpPlayerName->u1.lpszShortNameA )
 699     {
 700       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpPlayerName->u1.lpszShortNameA );
 701       dest->lpPlayerName->u1.lpszShortNameA = (LPSTR)lpStartOfFreeSpace;
 702       lpStartOfFreeSpace +=
 703         strlen( (LPSTR)dest->lpPlayerName->u1.lpszShortNameA ) + 1;
 704     }
 705
 706     if( src->lpPlayerName->u2.lpszLongNameA )
 707     {
 708       strcpy( (LPSTR)lpStartOfFreeSpace, src->lpPlayerName->u2.lpszLongNameA );
 709       dest->lpPlayerName->u2.lpszLongNameA = (LPSTR)lpStartOfFreeSpace;
 710       lpStartOfFreeSpace +=
 711         strlen( (LPSTR)dest->lpPlayerName->u2.lpszLongName ) + 1 ;
 712     }
 713
 714   }
 715
 716   /* Copy address if it exists */
 717   if( src->lpAddress )
 718   {
 719     dest->lpAddress = (LPVOID)lpStartOfFreeSpace;
 720     CopyMemory( lpStartOfFreeSpace, src->lpAddress, src->dwAddressSize );
 721     /* No need to advance lpStartOfFreeSpace as there is no more "dynamic" data */
 722   }
 723 }
 724
 725 HRESULT DPLAYX_GetConnectionSettingsW
 726 ( DWORD dwAppID,
 727   LPVOID lpData,
 728   LPDWORD lpdwDataSize )
 729 {
 730   LPDPLAYX_LOBBYDATA lpDplData;
 731   DWORD              dwRequiredDataSize = 0;
 732   HANDLE             hInformOnSettingRead;
 733
 734   DPLAYX_AquireSemaphore();
 735
 736   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 737   {
 738     DPLAYX_ReleaseSemaphore();
 739     return DPERR_NOTLOBBIED;
 740   }
 741
 742   dwRequiredDataSize = DPLAYX_SizeOfLobbyDataW( lpDplData->lpConn );
 743
 744   /* Do they want to know the required buffer size or is the provided buffer
 745    * big enough?
 746    */
 747   if ( ( lpData == NULL ) ||
 748        ( *lpdwDataSize < dwRequiredDataSize )
 749      )
 750   {
 751     DPLAYX_ReleaseSemaphore();
 752
 753     *lpdwDataSize = DPLAYX_SizeOfLobbyDataW( lpDplData->lpConn );
 754
 755     return DPERR_BUFFERTOOSMALL;
 756   }
 757
 758   DPLAYX_CopyConnStructW( (LPDPLCONNECTION)lpData, lpDplData->lpConn );
 759
 760   DPLAYX_ReleaseSemaphore();
 761
 762   /* They have gotten the information - signal the event if required */
 763   if( DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, FALSE ) &&
 764       hInformOnSettingRead
 765     )
 766   {
 767     BOOL bSuccess;
 768     bSuccess = SetEvent( hInformOnSettingRead );
 769     TRACE( "Signalling setting read event %p %s\n",
 770              hInformOnSettingRead, bSuccess ? "succeed" : "failed" );
 771
 772     /* Close out handle */
 773     DPLAYX_GetThisLobbyHandles( NULL, NULL, &hInformOnSettingRead, TRUE );
 774   }
 775
 776   return DP_OK;
 777 }
 778
 779 /* Assumption: Enough contiguous space was allocated at dest */
 780 void DPLAYX_CopyConnStructW( LPDPLCONNECTION dest, LPDPLCONNECTION src )
 781 {
 782   BYTE*              lpStartOfFreeSpace;
 783
 784   CopyMemory( dest, src, sizeof( DPLCONNECTION ) );
 785
 786   lpStartOfFreeSpace = ( (BYTE*)dest) + sizeof( DPLCONNECTION );
 787
 788   /* Copy the LPDPSESSIONDESC2 structure if it exists */
 789   if( src->lpSessionDesc )
 790   {
 791     dest->lpSessionDesc = (LPDPSESSIONDESC2)lpStartOfFreeSpace;
 792     lpStartOfFreeSpace += sizeof( DPSESSIONDESC2 );
 793     CopyMemory( dest->lpSessionDesc, src->lpSessionDesc, sizeof( DPSESSIONDESC2 ) );
 794
 795     /* Session names may or may not exist */
 796     if( src->lpSessionDesc->u1.lpszSessionName )
 797     {
 798       strcpyW( (LPWSTR)lpStartOfFreeSpace, dest->lpSessionDesc->u1.lpszSessionName );
 799       src->lpSessionDesc->u1.lpszSessionName = (LPWSTR)lpStartOfFreeSpace;
 800       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 801         ( strlenW( (LPWSTR)dest->lpSessionDesc->u1.lpszSessionName ) + 1 );
 802     }
 803
 804     if( src->lpSessionDesc->u2.lpszPassword )
 805     {
 806       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpSessionDesc->u2.lpszPassword );
 807       dest->lpSessionDesc->u2.lpszPassword = (LPWSTR)lpStartOfFreeSpace;
 808       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 809         ( strlenW( (LPWSTR)dest->lpSessionDesc->u2.lpszPassword ) + 1 );
 810     }
 811   }
 812
 813   /* DPNAME structure is optional */
 814   if( src->lpPlayerName )
 815   {
 816     dest->lpPlayerName = (LPDPNAME)lpStartOfFreeSpace;
 817     lpStartOfFreeSpace += sizeof( DPNAME );
 818     CopyMemory( dest->lpPlayerName, src->lpPlayerName, sizeof( DPNAME ) );
 819
 820     if( src->lpPlayerName->u1.lpszShortName )
 821     {
 822       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpPlayerName->u1.lpszShortName );
 823       dest->lpPlayerName->u1.lpszShortName = (LPWSTR)lpStartOfFreeSpace;
 824       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 825         ( strlenW( (LPWSTR)dest->lpPlayerName->u1.lpszShortName ) + 1 );
 826     }
 827
 828     if( src->lpPlayerName->u2.lpszLongName )
 829     {
 830       strcpyW( (LPWSTR)lpStartOfFreeSpace, src->lpPlayerName->u2.lpszLongName );
 831       dest->lpPlayerName->u2.lpszLongName = (LPWSTR)lpStartOfFreeSpace;
 832       lpStartOfFreeSpace +=  sizeof(WCHAR) *
 833         ( strlenW( (LPWSTR)dest->lpPlayerName->u2.lpszLongName ) + 1 );
 834     }
 835
 836   }
 837
 838   /* Copy address if it exists */
 839   if( src->lpAddress )
 840   {
 841     dest->lpAddress = (LPVOID)lpStartOfFreeSpace;
 842     CopyMemory( lpStartOfFreeSpace, src->lpAddress, src->dwAddressSize );
 843     /* No need to advance lpStartOfFreeSpace as there is no more "dynamic" data */
 844   }
 845
 846 }
 847
 848 /* Store the structure into the shared data structre. Ensure that allocs for
 849  * variable length strings come from the shared data structure.
 850  * FIXME: We need to free information as well
 851  */
 852 HRESULT DPLAYX_SetConnectionSettingsA
 853 ( DWORD dwFlags,
 854   DWORD dwAppID,
 855   LPDPLCONNECTION lpConn )
 856 {
 857   LPDPLAYX_LOBBYDATA lpDplData;
 858
 859   /* Parameter check */
 860   if( dwFlags || !lpConn )
 861   {
 862     ERR("invalid parameters.\n");
 863     return DPERR_INVALIDPARAMS;
 864   }
 865
 866   /* Store information */
 867   if(  lpConn->dwSize != sizeof(DPLCONNECTION) )
 868   {
 869     ERR(": old/new DPLCONNECTION type? Size=%08lx vs. expected=%ul bytes\n",
 870          lpConn->dwSize, sizeof( DPLCONNECTION ) );
 871
 872     return DPERR_INVALIDPARAMS;
 873   }
 874
 875   DPLAYX_AquireSemaphore();
 876
 877   if ( ! DPLAYX_IsAppIdLobbied( dwAppID, &lpDplData ) )
 878   {
 879     DPLAYX_ReleaseSemaphore();
 880
 881     return DPERR_NOTLOBBIED;
 882   }
 883
 884   if(  (!lpConn->lpSessionDesc ) ||
 885        ( lpConn->lpSessionDesc->dwSize != sizeof( DPSESSIONDESC2 ) )
 886     )
 887   {
 888     DPLAYX_ReleaseSemaphore();
 889
 890     ERR("DPSESSIONDESC passed in? Size=%lu vs. expected=%u bytes\n",
 891          lpConn->lpSessionDesc->dwSize, sizeof( DPSESSIONDESC2 ) );
 892
 893     return DPERR_INVALIDPARAMS;
 894   }
 895
 896   /* Free the existing memory */
 897   DPLAYX_PrivHeapFree( lpDplData->lpConn );
 898
 899   lpDplData->lpConn = DPLAYX_PrivHeapAlloc( HEAP_ZERO_MEMORY,
 900                                             DPLAYX_SizeOfLobbyDataA( lpConn ) );
 901
 902   DPLAYX_CopyConnStructA( lpDplData->lpConn, lpConn );
 903
 904
 905   DPLAYX_ReleaseSemaphore();
 906
 907   /* FIXME: Send a message - I think */
 908
 909   return DP_OK;
 910 }
 911
 912 /* Store the structure into the shared data structre. Ensure that allocs for
 913  * variable length strings come from the shared data structure.
 914  * FIXME: We need to free information as well
 915  */
 916 HRESULT DPLAYX_SetConnectionSettingsW
 917 ( DWORD dwFlags,
 918   DWORD dwAppID,
 919   LPDPLCONNECTION lpConn )
 920 {
 921   LPDPLAYX_LOBBYDATA lpDplData;
 922
 923   /* Parameter check */
 924   if( dwFlags || !lpConn )
 925   {
 926     ERR("invalid parameters.\n");
 927     return DPERR_INVALIDPARAMS;
 928   }
 929
 930   /* Store information */
 931   if(  lpConn->dwSize != sizeof(DPLCONNECTION) )
 932   {
 933     ERR(": old/new DPLCONNECTION type? Size=%lu vs. expected=%u bytes\n",
 934          lpConn->dwSize, sizeof( DPLCONNECTION ) );
 935
 936     return DPERR_INVALIDPARAMS;
 937   }
 938
 939   DPLAYX_AquireSemaphore();
 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( LPDPLCONNECTION 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( LPDPLCONNECTION 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_AquireSemaphore();
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_AquireSemaphore();
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_AquireSemaphore();
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%08lx\n", hr );
1351       wsprintfA( szTempStr, "0x%08lx", hr );
1352       return szTempStr;
1353   }
1354 }