dlls/ntdll/rtl.c

   1 /*
   2  * NT basis DLL
   3  *
   4  * This file contains the Rtl* API functions. These should be implementable.
   5  *
   6  * Copyright 1996-1998 Marcus Meissner
   7  * Copyright 1999      Alex Korobka
   8  * Copyright 2003      Thomas Mertes
   9  * Crc32 code Copyright 1986 Gary S. Brown (Public domain)
  10  *
  11  * This library is free software; you can redistribute it and/or
  12  * modify it under the terms of the GNU Lesser General Public
  13  * License as published by the Free Software Foundation; either
  14  * version 2.1 of the License, or (at your option) any later version.
  15  *
  16  * This library is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * Lesser General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU Lesser General Public
  22  * License along with this library; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  24  */
  25
  26 #include <stdarg.h>
  27
  28 #include "ntstatus.h"
  29 #define WIN32_NO_STATUS
  30 #include "winsock2.h"
  31 #include "windef.h"
  32 #include "winternl.h"
  33 #include "wine/debug.h"
  34 #include "wine/exception.h"
  35 #include "ntdll_misc.h"
  36 #include "in6addr.h"
  37 #include "ddk/ntddk.h"
  38 #include "ddk/ntifs.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  41 WINE_DECLARE_DEBUG_CHANNEL(debugstr);
  42
  43 #define htons(x) RtlUshortByteSwap(x)
  44 #define ntohs(x) RtlUshortByteSwap(x)
  45
  46 /* CRC polynomial 0xedb88320 */
  47 static const DWORD CRC_table[256] =
  48 {
  49     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
  50     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  51     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
  52     0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  53     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
  54     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  55     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
  56     0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  57     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
  58     0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  59     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
  60     0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  61     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
  62     0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  63     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
  64     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  65     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
  66     0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  67     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
  68     0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  69     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
  70     0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  71     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
  72     0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  73     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
  74     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  75     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
  76     0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  77     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
  78     0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  79     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
  80     0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  81     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
  82     0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  83     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
  84     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  85     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
  86     0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  87     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
  88     0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  89     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
  90     0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  91     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
  92 };
  93
  94 static const int hex_table[] = {
  95     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0F */
  96     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1F */
  97     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2F */
  98      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0x30-0x3F */
  99     -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4F */
 100     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5F */
 101     -1, 10, 11, 12, 13, 14, 15                                      /* 0x60-0x66 */
 102 };
 103
 104 /*
 105  *      resource functions
 106  */
 107
 108 /***********************************************************************
 109  *           RtlInitializeResource      (NTDLL.@)
 110  *
 111  * xxxResource() functions implement multiple-reader-single-writer lock.
 112  * The code is based on information published in WDJ January 1999 issue.
 113  */
 114 void WINAPI RtlInitializeResource(LPRTL_RWLOCK rwl)
 115 {
 116     if( rwl )
 117     {
 118         rwl->iNumberActive = 0;
 119         rwl->uExclusiveWaiters = 0;
 120         rwl->uSharedWaiters = 0;
 121         rwl->hOwningThreadId = 0;
 122         rwl->dwTimeoutBoost = 0; /* no info on this one, default value is 0 */
 123         RtlInitializeCriticalSection( &rwl->rtlCS );
 124         rwl->rtlCS.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": RTL_RWLOCK.rtlCS");
 125         NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 126         NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 127     }
 128 }
 129
 130
 131 /***********************************************************************
 132  *           RtlDeleteResource          (NTDLL.@)
 133  */
 134 void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
 135 {
 136     if( rwl )
 137     {
 138         RtlEnterCriticalSection( &rwl->rtlCS );
 139         if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
 140             ERR("Deleting active MRSW lock (%p), expect failure\n", rwl );
 141         rwl->hOwningThreadId = 0;
 142         rwl->uExclusiveWaiters = rwl->uSharedWaiters = 0;
 143         rwl->iNumberActive = 0;
 144         NtClose( rwl->hExclusiveReleaseSemaphore );
 145         NtClose( rwl->hSharedReleaseSemaphore );
 146         RtlLeaveCriticalSection( &rwl->rtlCS );
 147         rwl->rtlCS.DebugInfo->Spare[0] = 0;
 148         RtlDeleteCriticalSection( &rwl->rtlCS );
 149     }
 150 }
 151
 152
 153 /***********************************************************************
 154  *          RtlAcquireResourceExclusive (NTDLL.@)
 155  */
 156 BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl, BYTE fWait)
 157 {
 158     BYTE retVal = 0;
 159     if( !rwl ) return 0;
 160
 161 start:
 162     RtlEnterCriticalSection( &rwl->rtlCS );
 163     if( rwl->iNumberActive == 0 ) /* lock is free */
 164     {
 165         rwl->iNumberActive = -1;
 166         retVal = 1;
 167     }
 168     else if( rwl->iNumberActive < 0 ) /* exclusive lock in progress */
 169     {
 170          if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 171          {
 172              retVal = 1;
 173              rwl->iNumberActive--;
 174              goto done;
 175          }
 176 wait:
 177          if( fWait )
 178          {
 179              NTSTATUS status;
 180
 181              rwl->uExclusiveWaiters++;
 182
 183              RtlLeaveCriticalSection( &rwl->rtlCS );
 184              status = NtWaitForSingleObject( rwl->hExclusiveReleaseSemaphore, FALSE, NULL );
 185              if( HIWORD(status) )
 186                  goto done;
 187              goto start; /* restart the acquisition to avoid deadlocks */
 188          }
 189     }
 190     else  /* one or more shared locks are in progress */
 191          if( fWait )
 192              goto wait;
 193
 194     if( retVal == 1 )
 195         rwl->hOwningThreadId = ULongToHandle(GetCurrentThreadId());
 196 done:
 197     RtlLeaveCriticalSection( &rwl->rtlCS );
 198     return retVal;
 199 }
 200
 201 /***********************************************************************
 202  *          RtlAcquireResourceShared    (NTDLL.@)
 203  */
 204 BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
 205 {
 206     NTSTATUS status = STATUS_UNSUCCESSFUL;
 207     BYTE retVal = 0;
 208     if( !rwl ) return 0;
 209
 210 start:
 211     RtlEnterCriticalSection( &rwl->rtlCS );
 212     if( rwl->iNumberActive < 0 )
 213     {
 214         if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 215         {
 216             rwl->iNumberActive--;
 217             retVal = 1;
 218             goto done;
 219         }
 220
 221         if( fWait )
 222         {
 223             rwl->uSharedWaiters++;
 224             RtlLeaveCriticalSection( &rwl->rtlCS );
 225             status = NtWaitForSingleObject( rwl->hSharedReleaseSemaphore, FALSE, NULL );
 226             if( HIWORD(status) )
 227                 goto done;
 228             goto start;
 229         }
 230     }
 231     else
 232     {
 233         if( status != STATUS_WAIT_0 ) /* otherwise RtlReleaseResource() has already done it */
 234             rwl->iNumberActive++;
 235         retVal = 1;
 236     }
 237 done:
 238     RtlLeaveCriticalSection( &rwl->rtlCS );
 239     return retVal;
 240 }
 241
 242
 243 /***********************************************************************
 244  *           RtlReleaseResource         (NTDLL.@)
 245  */
 246 void WINAPI RtlReleaseResource(LPRTL_RWLOCK rwl)
 247 {
 248     RtlEnterCriticalSection( &rwl->rtlCS );
 249
 250     if( rwl->iNumberActive > 0 ) /* have one or more readers */
 251     {
 252         if( --rwl->iNumberActive == 0 )
 253         {
 254             if( rwl->uExclusiveWaiters )
 255             {
 256 wake_exclusive:
 257                 rwl->uExclusiveWaiters--;
 258                 NtReleaseSemaphore( rwl->hExclusiveReleaseSemaphore, 1, NULL );
 259             }
 260         }
 261     }
 262     else
 263     if( rwl->iNumberActive < 0 ) /* have a writer, possibly recursive */
 264     {
 265         if( ++rwl->iNumberActive == 0 )
 266         {
 267             rwl->hOwningThreadId = 0;
 268             if( rwl->uExclusiveWaiters )
 269                 goto wake_exclusive;
 270             else
 271                 if( rwl->uSharedWaiters )
 272                 {
 273                     UINT n = rwl->uSharedWaiters;
 274                     rwl->iNumberActive = rwl->uSharedWaiters; /* prevent new writers from joining until
 275                                                                * all queued readers have done their thing */
 276                     rwl->uSharedWaiters = 0;
 277                     NtReleaseSemaphore( rwl->hSharedReleaseSemaphore, n, NULL );
 278                 }
 279         }
 280     }
 281     RtlLeaveCriticalSection( &rwl->rtlCS );
 282 }
 283
 284
 285 /***********************************************************************
 286  *           RtlDumpResource            (NTDLL.@)
 287  */
 288 void WINAPI RtlDumpResource(LPRTL_RWLOCK rwl)
 289 {
 290     if( rwl )
 291     {
 292         MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
 293                 rwl, rwl->iNumberActive, rwl->uSharedWaiters, rwl->uExclusiveWaiters );
 294         if( rwl->iNumberActive )
 295             MESSAGE("\towner thread = %p\n", rwl->hOwningThreadId );
 296     }
 297 }
 298
 299 /*
 300  *      misc functions
 301  */
 302
 303 static LONG WINAPI debug_exception_handler( EXCEPTION_POINTERS *eptr )
 304 {
 305     EXCEPTION_RECORD *rec = eptr->ExceptionRecord;
 306     return (rec->ExceptionCode == DBG_PRINTEXCEPTION_C) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
 307 }
 308
 309 /******************************************************************************
 310  *      DbgPrint        [NTDLL.@]
 311  */
 312 NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...)
 313 {
 314     NTSTATUS ret;
 315     va_list args;
 316
 317     va_start(args, fmt);
 318     ret = vDbgPrintEx(0, DPFLTR_ERROR_LEVEL, fmt, args);
 319     va_end(args);
 320     return ret;
 321 }
 322
 323
 324 /******************************************************************************
 325  *      DbgPrintEx      [NTDLL.@]
 326  */
 327 NTSTATUS WINAPIV DbgPrintEx(ULONG iComponentId, ULONG Level, LPCSTR fmt, ...)
 328 {
 329     NTSTATUS ret;
 330     va_list args;
 331
 332     va_start(args, fmt);
 333     ret = vDbgPrintEx(iComponentId, Level, fmt, args);
 334     va_end(args);
 335     return ret;
 336 }
 337
 338 /******************************************************************************
 339  *      vDbgPrintEx     [NTDLL.@]
 340  */
 341 NTSTATUS WINAPI vDbgPrintEx( ULONG id, ULONG level, LPCSTR fmt, va_list args )
 342 {
 343     return vDbgPrintExWithPrefix( "", id, level, fmt, args );
 344 }
 345
 346 /******************************************************************************
 347  *      vDbgPrintExWithPrefix  [NTDLL.@]
 348  */
 349 NTSTATUS WINAPI vDbgPrintExWithPrefix( LPCSTR prefix, ULONG id, ULONG level, LPCSTR fmt, va_list args )
 350 {
 351     ULONG level_mask = level <= 31 ? (1 << level) : level;
 352     SIZE_T len = strlen( prefix );
 353     char buf[1024], *end;
 354
 355     strcpy( buf, prefix );
 356     len += _vsnprintf( buf + len, sizeof(buf) - len, fmt, args );
 357     end = buf + len - 1;
 358
 359     WARN_(debugstr)(*end == '\n' ? "%08lx:%08lx: %s" : "%08lx:%08lx: %s\n", id, level_mask, buf);
 360
 361     if (level_mask & (1 << DPFLTR_ERROR_LEVEL) && NtCurrentTeb()->Peb->BeingDebugged)
 362     {
 363         __TRY
 364         {
 365             EXCEPTION_RECORD record;
 366             record.ExceptionCode    = DBG_PRINTEXCEPTION_C;
 367             record.ExceptionFlags   = 0;
 368             record.ExceptionRecord  = NULL;
 369             record.ExceptionAddress = RtlRaiseException;
 370             record.NumberParameters = 2;
 371             record.ExceptionInformation[1] = (ULONG_PTR)buf;
 372             record.ExceptionInformation[0] = strlen( buf ) + 1;
 373             RtlRaiseException( &record );
 374         }
 375         __EXCEPT(debug_exception_handler)
 376         {
 377         }
 378         __ENDTRY
 379     }
 380
 381     return STATUS_SUCCESS;
 382 }
 383
 384 /******************************************************************************
 385  *  RtlAcquirePebLock           [NTDLL.@]
 386  */
 387 VOID WINAPI RtlAcquirePebLock(void)
 388 {
 389     RtlEnterCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 390 }
 391
 392 /******************************************************************************
 393  *  RtlReleasePebLock           [NTDLL.@]
 394  */
 395 VOID WINAPI RtlReleasePebLock(void)
 396 {
 397     RtlLeaveCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 398 }
 399
 400 /******************************************************************************
 401  *  RtlInitializeGenericTable           [NTDLL.@]
 402  */
 403 void WINAPI RtlInitializeGenericTable(RTL_GENERIC_TABLE *table, PRTL_GENERIC_COMPARE_ROUTINE compare,
 404                                       PRTL_GENERIC_ALLOCATE_ROUTINE allocate, PRTL_GENERIC_FREE_ROUTINE free,
 405                                       void *context)
 406 {
 407     TRACE("(%p, %p, %p, %p, %p)\n", table, compare, allocate, free, context);
 408
 409     table->TableRoot = NULL;
 410     table->InsertOrderList.Flink = &table->InsertOrderList;
 411     table->InsertOrderList.Blink = &table->InsertOrderList;
 412     table->OrderedPointer = &table->InsertOrderList;
 413     table->NumberGenericTableElements = 0;
 414     table->WhichOrderedElement = 0;
 415     table->CompareRoutine = compare;
 416     table->AllocateRoutine = allocate;
 417     table->FreeRoutine = free;
 418     table->TableContext = context;
 419 }
 420
 421 /******************************************************************************
 422  *  RtlEnumerateGenericTableWithoutSplaying           [NTDLL.@]
 423  */
 424 void * WINAPI RtlEnumerateGenericTableWithoutSplaying(RTL_GENERIC_TABLE *table, void *previous)
 425 {
 426     static int warn_once;
 427
 428     if (!warn_once++)
 429         FIXME("(%p, %p) stub!\n", table, previous);
 430     return NULL;
 431 }
 432
 433 /******************************************************************************
 434  *  RtlNumberGenericTableElements           [NTDLL.@]
 435  */
 436 ULONG WINAPI RtlNumberGenericTableElements(RTL_GENERIC_TABLE *table)
 437 {
 438     TRACE("(%p)\n", table);
 439     return table->NumberGenericTableElements;
 440 }
 441
 442 /******************************************************************************
 443  *  RtlGetElementGenericTable           [NTDLL.@]
 444  */
 445 void * WINAPI RtlGetElementGenericTable(RTL_GENERIC_TABLE *table, ULONG index)
 446 {
 447     FIXME("(%p, %lu) stub!\n", table, index);
 448     return NULL;
 449 }
 450
 451 /******************************************************************************
 452  *  RtlLookupElementGenericTable           [NTDLL.@]
 453  */
 454 void * WINAPI RtlLookupElementGenericTable(RTL_GENERIC_TABLE *table, void *buffer)
 455 {
 456     FIXME("(%p, %p) stub!\n", table, buffer);
 457     return NULL;
 458 }
 459
 460 /******************************************************************************
 461  *  RtlMoveMemory   [NTDLL.@]
 462  *
 463  * Move a block of memory that may overlap.
 464  *
 465  * PARAMS
 466  *  Destination [O] End destination for block
 467  *  Source      [O] Where to start copying from
 468  *  Length      [I] Number of bytes to copy
 469  *
 470  * RETURNS
 471  *  Nothing.
 472  */
 473 #undef RtlMoveMemory
 474 VOID WINAPI RtlMoveMemory( void *Destination, const void *Source, SIZE_T Length )
 475 {
 476     memmove(Destination, Source, Length);
 477 }
 478
 479 /******************************************************************************
 480  *  RtlFillMemory   [NTDLL.@]
 481  *
 482  * Set a block of memory with a value.
 483  *
 484  * PARAMS
 485  *  Destination [O] Block to fill
 486  *  Length      [I] Number of bytes to fill
 487  *  Fill        [I] Value to set
 488  *
 489  * RETURNS
 490  *  Nothing.
 491  */
 492 #undef RtlFillMemory
 493 VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
 494 {
 495     memset(Destination, Fill, Length);
 496 }
 497
 498 /******************************************************************************
 499  *  RtlZeroMemory   [NTDLL.@]
 500  *
 501  * Set a block of memory with 0's.
 502  *
 503  * PARAMS
 504  *  Destination [O] Block to fill
 505  *  Length      [I] Number of bytes to fill
 506  *
 507  * RETURNS
 508  *  Nothing.
 509  */
 510 #undef RtlZeroMemory
 511 VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
 512 {
 513     memset(Destination, 0, Length);
 514 }
 515
 516 /******************************************************************************
 517  *  RtlCompareMemory   [NTDLL.@]
 518  *
 519  * Compare one block of memory with another
 520  *
 521  * PARAMS
 522  *  Source1 [I] Source block
 523  *  Source2 [I] Block to compare to Source1
 524  *  Length  [I] Number of bytes to compare
 525  *
 526  * RETURNS
 527  *  The length of the first byte at which Source1 and Source2 differ, or Length
 528  *  if they are the same.
 529  */
 530 SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
 531 {
 532     SIZE_T i;
 533     for(i=0; (i<Length) && (((const BYTE*)Source1)[i]==((const BYTE*)Source2)[i]); i++);
 534     return i;
 535 }
 536
 537 /******************************************************************************
 538  *  RtlCompareMemoryUlong   [NTDLL.@]
 539  *
 540  * Compare a block of memory with a value, a ULONG at a time
 541  *
 542  * PARAMS
 543  *  Source1 [I] Source block. This must be ULONG aligned
 544  *  Length  [I] Number of bytes to compare. This should be a multiple of 4
 545  *  dwVal   [I] Value to compare to
 546  *
 547  * RETURNS
 548  *  The byte position of the first byte at which Source1 is not dwVal.
 549  */
 550 SIZE_T WINAPI RtlCompareMemoryUlong(VOID *Source1, SIZE_T Length, ULONG dwVal)
 551 {
 552     SIZE_T i;
 553     for(i = 0; i < Length/sizeof(ULONG) && ((ULONG *)Source1)[i] == dwVal; i++);
 554     return i * sizeof(ULONG);
 555 }
 556
 557 /******************************************************************************
 558  *  RtlCopyMemory   [NTDLL.@]
 559  */
 560 #undef RtlCopyMemory
 561 void WINAPI RtlCopyMemory(void *dest, const void *src, SIZE_T len)
 562 {
 563     memcpy(dest, src, len);
 564 }
 565
 566 /******************************************************************************
 567  *  RtlAssert                           [NTDLL.@]
 568  *
 569  * Fail a debug assertion.
 570  *
 571  * RETURNS
 572  *  Nothing. This call does not return control to its caller.
 573  *
 574  * NOTES
 575  * Not implemented in non-debug versions.
 576  */
 577 void WINAPI RtlAssert(void *assertion, void *filename, ULONG linenumber, char *message)
 578 {
 579     FIXME("(%s, %s, %lu, %s): stub\n", debugstr_a((char*)assertion), debugstr_a((char*)filename),
 580         linenumber, debugstr_a(message));
 581 }
 582
 583 /*************************************************************************
 584  * RtlFillMemoryUlong   [NTDLL.@]
 585  *
 586  * Fill memory with a 32 bit (dword) value.
 587  *
 588  * PARAMS
 589  *  lpDest  [I] Bitmap pointer
 590  *  ulCount [I] Number of dwords to write
 591  *  ulValue [I] Value to fill with
 592  *
 593  * RETURNS
 594  *  Nothing.
 595  */
 596 VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
 597 {
 598   TRACE("(%p,%lu,%lu)\n", lpDest, ulCount, ulValue);
 599
 600   ulCount /= sizeof(ULONG);
 601   while(ulCount--)
 602     *lpDest++ = ulValue;
 603 }
 604
 605 /*********************************************************************
 606  *                  RtlComputeCrc32   [NTDLL.@]
 607  *
 608  * Calculate the CRC32 checksum of a block of bytes
 609  *
 610  * PARAMS
 611  *  dwInitial [I] Initial CRC value
 612  *  pData     [I] Data block
 613  *  iLen      [I] Length of the byte block
 614  *
 615  * RETURNS
 616  *  The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
 617  */
 618 DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, const BYTE *pData, INT iLen)
 619 {
 620   DWORD crc = ~dwInitial;
 621
 622   TRACE("(%lu,%p,%d)\n", dwInitial, pData, iLen);
 623
 624   while (iLen > 0)
 625   {
 626     crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
 627     pData++;
 628     iLen--;
 629   }
 630   return ~crc;
 631 }
 632
 633
 634 /*************************************************************************
 635  * RtlUlonglongByteSwap    [NTDLL.@]
 636  *
 637  * Swap the bytes of an unsigned long long value.
 638  *
 639  * PARAMS
 640  *  i [I] Value to swap bytes of
 641  *
 642  * RETURNS
 643  *  The value with its bytes swapped.
 644  */
 645 #ifdef __i386__
 646 __ASM_FASTCALL_FUNC(RtlUlonglongByteSwap, 8,
 647                     "movl 4(%esp),%edx\n\t"
 648                     "bswap %edx\n\t"
 649                     "movl 8(%esp),%eax\n\t"
 650                     "bswap %eax\n\t"
 651                     "ret $8")
 652 #endif
 653
 654 /*************************************************************************
 655  * RtlUlongByteSwap    [NTDLL.@]
 656  *
 657  * Swap the bytes of an unsigned int value.
 658  *
 659  * NOTES
 660  *  ix86 version takes argument in %ecx. Other systems use the inline version.
 661  */
 662 #ifdef __i386__
 663 __ASM_FASTCALL_FUNC(RtlUlongByteSwap, 4,
 664                     "movl %ecx,%eax\n\t"
 665                     "bswap %eax\n\t"
 666                     "ret")
 667 #endif
 668
 669 /*************************************************************************
 670  * RtlUshortByteSwap    [NTDLL.@]
 671  *
 672  * Swap the bytes of an unsigned short value.
 673  *
 674  * NOTES
 675  *  i386 version takes argument in %cx. Other systems use the inline version.
 676  */
 677 #ifdef __i386__
 678 __ASM_FASTCALL_FUNC(RtlUshortByteSwap, 4,
 679                     "movb %ch,%al\n\t"
 680                     "movb %cl,%ah\n\t"
 681                     "ret")
 682 #endif
 683
 684
 685 /*************************************************************************
 686  * RtlUniform   [NTDLL.@]
 687  *
 688  * Generates a uniform random number
 689  *
 690  * PARAMS
 691  *  seed [O] The seed of the Random function
 692  *
 693  * RETURNS
 694  *  It returns a random number uniformly distributed over [0..MAXLONG-1].
 695  *
 696  * NOTES
 697  *  Generates a uniform random number using a linear congruential generator.
 698  *
 699  * DIFFERENCES
 700  *  The native documentation states that the random number is
 701  *  uniformly distributed over [0..MAXLONG]. In reality the native
 702  *  function and our function return a random number uniformly
 703  *  distributed over [0..MAXLONG-1].
 704  */
 705 ULONG WINAPI RtlUniform( ULONG *seed )
 706 {
 707     /* See the tests for details. */
 708     return (*seed = ((ULONGLONG)*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff);
 709 }
 710
 711
 712 /*************************************************************************
 713  * RtlRandom   [NTDLL.@]
 714  *
 715  * Generates a random number
 716  *
 717  * PARAMS
 718  *  seed [O] The seed of the Random function
 719  *
 720  * RETURNS
 721  *  It returns a random number distributed over [0..MAXLONG-1].
 722  */
 723 ULONG WINAPI RtlRandom (PULONG seed)
 724 {
 725     static ULONG saved_value[128] =
 726     { /*   0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
 727       /*   8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
 728       /*  16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
 729       /*  24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
 730       /*  32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
 731       /*  40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
 732       /*  48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
 733       /*  56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
 734       /*  64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
 735       /*  72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
 736       /*  80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
 737       /*  88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
 738       /*  96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
 739       /* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
 740       /* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
 741       /* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
 742     ULONG rand;
 743     int pos;
 744     ULONG result;
 745
 746     rand = (*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 747     *seed = (rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 748     pos = *seed & 0x7f;
 749     result = saved_value[pos];
 750     saved_value[pos] = rand;
 751     return(result);
 752 }
 753
 754
 755 /*************************************************************************
 756  * RtlRandomEx   [NTDLL.@]
 757  */
 758 ULONG WINAPI RtlRandomEx( ULONG *seed )
 759 {
 760     WARN( "semi-stub: should use a different algorithm\n" );
 761     return RtlRandom( seed );
 762 }
 763
 764 /*************************************************************************
 765  * RtlAreAllAccessesGranted   [NTDLL.@]
 766  *
 767  * Check if all desired accesses are granted
 768  *
 769  * RETURNS
 770  *  TRUE: All desired accesses are granted
 771  *  FALSE: Otherwise
 772  */
 773 BOOLEAN WINAPI RtlAreAllAccessesGranted(
 774     ACCESS_MASK GrantedAccess,
 775     ACCESS_MASK DesiredAccess)
 776 {
 777     return (GrantedAccess & DesiredAccess) == DesiredAccess;
 778 }
 779
 780
 781 /*************************************************************************
 782  * RtlAreAnyAccessesGranted   [NTDLL.@]
 783  *
 784  * Check if at least one of the desired accesses is granted
 785  *
 786  * PARAMS
 787  *  GrantedAccess [I] Access mask of granted accesses
 788  *  DesiredAccess [I] Access mask of desired accesses
 789  *
 790  * RETURNS
 791  *  TRUE: At least one of the desired accesses is granted
 792  *  FALSE: Otherwise
 793  */
 794 BOOLEAN WINAPI RtlAreAnyAccessesGranted(
 795     ACCESS_MASK GrantedAccess,
 796     ACCESS_MASK DesiredAccess)
 797 {
 798     return (GrantedAccess & DesiredAccess) != 0;
 799 }
 800
 801
 802 /*************************************************************************
 803  * RtlMapGenericMask   [NTDLL.@]
 804  *
 805  * Determine the nongeneric access rights specified by an access mask
 806  *
 807  * RETURNS
 808  *  Nothing.
 809  */
 810 void WINAPI RtlMapGenericMask(
 811     PACCESS_MASK AccessMask,
 812     const GENERIC_MAPPING *GenericMapping)
 813 {
 814     if (*AccessMask & GENERIC_READ) {
 815         *AccessMask |= GenericMapping->GenericRead;
 816     } /* if */
 817
 818     if (*AccessMask & GENERIC_WRITE) {
 819         *AccessMask |= GenericMapping->GenericWrite;
 820     } /* if */
 821
 822     if (*AccessMask & GENERIC_EXECUTE) {
 823         *AccessMask |= GenericMapping->GenericExecute;
 824     } /* if */
 825
 826     if (*AccessMask & GENERIC_ALL) {
 827         *AccessMask |= GenericMapping->GenericAll;
 828     } /* if */
 829
 830     *AccessMask &= 0x0FFFFFFF;
 831 }
 832
 833
 834 /*************************************************************************
 835  * RtlCopyLuid   [NTDLL.@]
 836  *
 837  * Copy a local unique ID.
 838  *
 839  * PARAMS
 840  *  LuidDest [O] Destination for the copied Luid
 841  *  LuidSrc  [I] Source Luid to copy to LuidDest
 842  *
 843  * RETURNS
 844  *  Nothing.
 845  */
 846 void WINAPI RtlCopyLuid (PLUID LuidDest, const LUID *LuidSrc)
 847 {
 848     *LuidDest = *LuidSrc;
 849 }
 850
 851
 852 /*************************************************************************
 853  * RtlEqualLuid   [NTDLL.@]
 854  *
 855  * Compare two local unique IDs.
 856  *
 857  * PARAMS
 858  *  Luid1 [I] First Luid to compare to Luid2
 859  *  Luid2 [I] Second Luid to compare to Luid1
 860  *
 861  * RETURNS
 862  *  TRUE: The two LUIDs are equal.
 863  *  FALSE: Otherwise
 864  */
 865 BOOLEAN WINAPI RtlEqualLuid (const LUID *Luid1, const LUID *Luid2)
 866 {
 867   return (Luid1->LowPart ==  Luid2->LowPart && Luid1->HighPart == Luid2->HighPart);
 868 }
 869
 870
 871 /*************************************************************************
 872  * RtlCopyLuidAndAttributesArray   [NTDLL.@]
 873  *
 874  * Copy an array of local unique IDs and attributes.
 875  *
 876  * PARAMS
 877  *  Count [I] Number of Luid/attributes in Src
 878  *  Src   [I] Source Luid/attributes to copy
 879  *  Dest  [O] Destination for copied Luid/attributes
 880  *
 881  * RETURNS
 882  *  Nothing.
 883  *
 884  * NOTES
 885  *  Dest must be large enough to hold Src.
 886  */
 887 void WINAPI RtlCopyLuidAndAttributesArray(
 888     ULONG Count,
 889     const LUID_AND_ATTRIBUTES *Src,
 890     PLUID_AND_ATTRIBUTES Dest)
 891 {
 892     ULONG i;
 893
 894     for (i = 0; i < Count; i++) Dest[i] = Src[i];
 895 }
 896
 897 static BOOL parse_ipv4_component(const WCHAR **str, BOOL strict, ULONG *value)
 898 {
 899     int base = 10, d;
 900     WCHAR c;
 901     ULONG cur_value, prev_value = 0;
 902     BOOL success = FALSE;
 903
 904     if (**str == '.')
 905     {
 906         *str += 1;
 907         return FALSE;
 908     }
 909
 910     if ((*str)[0] == '0')
 911     {
 912         if ((*str)[1] == 'x' || (*str)[1] == 'X')
 913         {
 914             *str += 2;
 915             if (strict) return FALSE;
 916             base = 16;
 917         }
 918         else if ((*str)[1] >= '0' && (*str)[1] <= '9')
 919         {
 920             *str += 1;
 921             if (strict) return FALSE;
 922             base = 8;
 923         }
 924     }
 925
 926     for (cur_value = 0; **str; *str += 1)
 927     {
 928         c = **str;
 929         if (c >= ARRAY_SIZE(hex_table)) break;
 930         d = hex_table[c];
 931         if (d == -1 || d >= base) break;
 932         cur_value = cur_value * base + d;
 933         success = TRUE;
 934         if (cur_value < prev_value) return FALSE; /* overflow */
 935         prev_value = cur_value;
 936     }
 937
 938     if (success) *value = cur_value;
 939     return success;
 940 }
 941
 942 static NTSTATUS ipv4_string_to_address(const WCHAR *str, BOOL strict,
 943                                        const WCHAR **terminator, IN_ADDR *address, USHORT *port)
 944 {
 945     ULONG fields[4];
 946     int n = 0;
 947
 948     for (;;)
 949     {
 950         if (!parse_ipv4_component(&str, strict, &fields[n]))
 951             goto error;
 952         n++;
 953         if (*str != '.')
 954             break;
 955         if (n == 4)
 956             goto error;
 957         str++;
 958     }
 959
 960     if (strict && n < 4)
 961         goto error;
 962
 963     switch (n)
 964     {
 965         case 4:
 966             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFF || fields[3] > 0xFF)
 967                 goto error;
 968             address->S_un.S_un_b.s_b1 = fields[0];
 969             address->S_un.S_un_b.s_b2 = fields[1];
 970             address->S_un.S_un_b.s_b3 = fields[2];
 971             address->S_un.S_un_b.s_b4 = fields[3];
 972             break;
 973         case 3:
 974             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFFFF)
 975                 goto error;
 976             address->S_un.S_un_b.s_b1 = fields[0];
 977             address->S_un.S_un_b.s_b2 = fields[1];
 978             address->S_un.S_un_b.s_b3 = (fields[2] & 0xFF00) >> 8;
 979             address->S_un.S_un_b.s_b4 = (fields[2] & 0x00FF);
 980             break;
 981         case 2:
 982             if (fields[0] > 0xFF || fields[1] > 0xFFFFFF)
 983                 goto error;
 984             address->S_un.S_un_b.s_b1 = fields[0];
 985             address->S_un.S_un_b.s_b2 = (fields[1] & 0xFF0000) >> 16;
 986             address->S_un.S_un_b.s_b3 = (fields[1] & 0x00FF00) >> 8;
 987             address->S_un.S_un_b.s_b4 = (fields[1] & 0x0000FF);
 988             break;
 989         case 1:
 990             address->S_un.S_un_b.s_b1 = (fields[0] & 0xFF000000) >> 24;
 991             address->S_un.S_un_b.s_b2 = (fields[0] & 0x00FF0000) >> 16;
 992             address->S_un.S_un_b.s_b3 = (fields[0] & 0x0000FF00) >> 8;
 993             address->S_un.S_un_b.s_b4 = (fields[0] & 0x000000FF);
 994             break;
 995         default:
 996             goto error;
 997     }
 998
 999     if (terminator) *terminator = str;
1000
1001     if (*str == ':')
1002     {
1003         str++;
1004         if (!parse_ipv4_component(&str, FALSE, &fields[0]))
1005             goto error;
1006         if (!fields[0] || fields[0] > 0xFFFF || *str)
1007             goto error;
1008         if (port)
1009         {
1010             *port = htons(fields[0]);
1011             if (terminator) *terminator = str;
1012         }
1013     }
1014
1015     if (!terminator && *str)
1016         return STATUS_INVALID_PARAMETER;
1017     return STATUS_SUCCESS;
1018
1019 error:
1020     if (terminator) *terminator = str;
1021     return STATUS_INVALID_PARAMETER;
1022 }
1023
1024 /***********************************************************************
1025  * RtlIpv4StringToAddressExW [NTDLL.@]
1026  */
1027 NTSTATUS WINAPI RtlIpv4StringToAddressExW(const WCHAR *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1028 {
1029     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, address, port);
1030     if (!str || !address || !port) return STATUS_INVALID_PARAMETER;
1031     return ipv4_string_to_address(str, strict, NULL, address, port);
1032 }
1033
1034 /***********************************************************************
1035  * RtlIpv4StringToAddressW [NTDLL.@]
1036  */
1037 NTSTATUS WINAPI RtlIpv4StringToAddressW(const WCHAR *str, BOOLEAN strict, const WCHAR **terminator, IN_ADDR *address)
1038 {
1039     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, terminator, address);
1040     return ipv4_string_to_address(str, strict, terminator, address, NULL);
1041 }
1042
1043 /***********************************************************************
1044  * RtlIpv4StringToAddressExA [NTDLL.@]
1045  */
1046 NTSTATUS WINAPI RtlIpv4StringToAddressExA(const char *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1047 {
1048     WCHAR wstr[32];
1049
1050     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, address, port);
1051
1052     if (!str || !address || !port)
1053         return STATUS_INVALID_PARAMETER;
1054
1055     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1056     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1057     return ipv4_string_to_address(wstr, strict, NULL, address, port);
1058 }
1059
1060 /***********************************************************************
1061  * RtlIpv4StringToAddressA [NTDLL.@]
1062  */
1063 NTSTATUS WINAPI RtlIpv4StringToAddressA(const char *str, BOOLEAN strict, const char **terminator, IN_ADDR *address)
1064 {
1065     WCHAR wstr[32];
1066     const WCHAR *wterminator;
1067     NTSTATUS ret;
1068
1069     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, terminator, address);
1070
1071     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1072     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1073     ret = ipv4_string_to_address(wstr, strict, &wterminator, address, NULL);
1074     if (terminator) *terminator = str + (wterminator - wstr);
1075     return ret;
1076 }
1077
1078 static BOOL parse_ipv6_component(const WCHAR **str, int base, ULONG *value)
1079 {
1080     WCHAR *terminator;
1081     if (**str >= ARRAY_SIZE(hex_table) || hex_table[**str] == -1) return FALSE;
1082     *value = min(wcstoul(*str, &terminator, base), 0x7FFFFFFF);
1083     if (*terminator == '0') terminator++; /* "0x" but nothing valid after */
1084     else if (terminator == *str) return FALSE;
1085     *str = terminator;
1086     return TRUE;
1087 }
1088
1089 static NTSTATUS ipv6_string_to_address(const WCHAR *str, BOOL ex,
1090                                        const WCHAR **terminator, IN6_ADDR *address, ULONG *scope, USHORT *port)
1091 {
1092     BOOL expecting_port = FALSE, has_0x = FALSE, too_big = FALSE;
1093     int n_bytes = 0, n_ipv4_bytes = 0, gap = -1;
1094     ULONG ip_component, scope_component = 0, port_component = 0;
1095     const WCHAR *prev_str;
1096
1097     if (str[0] == '[')
1098     {
1099         if (!ex) goto error;
1100         expecting_port = TRUE;
1101         str++;
1102     }
1103
1104     if (str[0] == ':')
1105     {
1106         if (str[1] != ':') goto error;
1107         str++;
1108         address->u.Word[0] = 0;
1109     }
1110
1111     for (;;)
1112     {
1113         if (!n_ipv4_bytes && *str == ':')
1114         {
1115             /* double colon */
1116             if (gap != -1) goto error;
1117             str++;
1118             prev_str = str;
1119             gap = n_bytes;
1120             if (n_bytes == 14 || !parse_ipv6_component(&str, 16, &ip_component)) break;
1121             str = prev_str;
1122         }
1123         else
1124         {
1125             prev_str = str;
1126         }
1127
1128         if (!n_ipv4_bytes && n_bytes <= (gap != -1 ? 10 : 12))
1129         {
1130             if (parse_ipv6_component(&str, 10, &ip_component) && *str == '.')
1131                 n_ipv4_bytes = 1;
1132             str = prev_str;
1133         }
1134
1135         if (n_ipv4_bytes)
1136         {
1137             /* IPv4 component */
1138             if (!parse_ipv6_component(&str, 10, &ip_component)) goto error;
1139             if (str - prev_str > 3 || ip_component > 255)
1140             {
1141                 too_big = TRUE;
1142             }
1143             else
1144             {
1145                 if (*str != '.' && (n_ipv4_bytes < 4 || (n_bytes < 15 && gap == -1))) goto error;
1146                 address->u.Byte[n_bytes] = ip_component;
1147                 n_bytes++;
1148             }
1149             if (n_ipv4_bytes == 4 || *str != '.') break;
1150             n_ipv4_bytes++;
1151         }
1152         else
1153         {
1154             /* IPv6 component */
1155             if (!parse_ipv6_component(&str, 16, &ip_component)) goto error;
1156             if (prev_str[0] == '0' && (prev_str[1] == 'x' || prev_str[1] == 'X'))
1157             {
1158                 /* Windows "feature": the last IPv6 component can start with "0x" and be longer than 4 digits */
1159                 if (terminator) *terminator = prev_str + 1; /* Windows says that the "x" is the terminator */
1160                 if (n_bytes < 14 && gap == -1) return STATUS_INVALID_PARAMETER;
1161                 address->u.Word[n_bytes/2] = htons(ip_component);
1162                 n_bytes += 2;
1163                 has_0x = TRUE;
1164                 goto fill_gap;
1165             }
1166             if (*str != ':' && n_bytes < 14 && gap == -1) goto error;
1167             if (str - prev_str > 4)
1168                 too_big = TRUE;
1169             else
1170                 address->u.Word[n_bytes/2] = htons(ip_component);
1171             n_bytes += 2;
1172             if (*str != ':' || (gap != -1 && str[1] == ':')) break;
1173         }
1174         if (n_bytes == (gap != -1 ? 14 : 16)) break;
1175         if (too_big) return STATUS_INVALID_PARAMETER;
1176         str++;
1177     }
1178
1179     if (terminator) *terminator = str;
1180     if (too_big) return STATUS_INVALID_PARAMETER;
1181
1182 fill_gap:
1183     if (gap == -1)
1184     {
1185         if (n_bytes < 16) goto error;
1186     }
1187     else
1188     {
1189         memmove(address->u.Byte + 16 - (n_bytes - gap), address->u.Byte + gap, n_bytes - gap);
1190         memset(address->u.Byte + gap, 0, 16 - n_bytes);
1191     }
1192
1193     if (ex)
1194     {
1195         if (has_0x) goto error;
1196
1197         if (*str == '%')
1198         {
1199             str++;
1200             if (!parse_ipv4_component(&str, TRUE, &scope_component)) goto error;
1201         }
1202
1203         if (expecting_port)
1204         {
1205             if (*str != ']') goto error;
1206             str++;
1207             if (*str == ':')
1208             {
1209                 str++;
1210                 if (!parse_ipv4_component(&str, FALSE, &port_component)) goto error;
1211                 if (!port_component || port_component > 0xFFFF || *str) goto error;
1212                 port_component = htons(port_component);
1213             }
1214         }
1215     }
1216
1217     if (!terminator && *str) return STATUS_INVALID_PARAMETER;
1218
1219     if (scope) *scope = scope_component;
1220     if (port) *port = port_component;
1221
1222     return STATUS_SUCCESS;
1223
1224 error:
1225     if (terminator) *terminator = str;
1226     return STATUS_INVALID_PARAMETER;
1227 }
1228
1229 /***********************************************************************
1230  * RtlIpv6StringToAddressExW [NTDLL.@]
1231  */
1232 NTSTATUS NTAPI RtlIpv6StringToAddressExW(const WCHAR *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1233 {
1234     TRACE("(%s, %p, %p, %p)\n", debugstr_w(str), address, scope, port);
1235     if (!str || !address || !scope || !port) return STATUS_INVALID_PARAMETER;
1236     return ipv6_string_to_address(str, TRUE, NULL, address, scope, port);
1237 }
1238
1239 /***********************************************************************
1240  * RtlIpv6StringToAddressW [NTDLL.@]
1241  */
1242 NTSTATUS WINAPI RtlIpv6StringToAddressW(const WCHAR *str, const WCHAR **terminator, IN6_ADDR *address)
1243 {
1244     TRACE("(%s, %p, %p)\n", debugstr_w(str), terminator, address);
1245     return ipv6_string_to_address(str, FALSE, terminator, address, NULL, NULL);
1246 }
1247
1248 /***********************************************************************
1249  * RtlIpv6StringToAddressExA [NTDLL.@]
1250  */
1251 NTSTATUS WINAPI RtlIpv6StringToAddressExA(const char *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1252 {
1253     WCHAR wstr[128];
1254
1255     TRACE("(%s, %p, %p, %p)\n", debugstr_a(str), address, scope, port);
1256
1257     if (!str || !address || !scope || !port)
1258         return STATUS_INVALID_PARAMETER;
1259
1260     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1261     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1262     return ipv6_string_to_address(wstr, TRUE, NULL, address, scope, port);
1263 }
1264
1265 /***********************************************************************
1266  * RtlIpv6StringToAddressA [NTDLL.@]
1267  */
1268 NTSTATUS WINAPI RtlIpv6StringToAddressA(const char *str, const char **terminator, IN6_ADDR *address)
1269 {
1270     WCHAR wstr[128];
1271     const WCHAR *wterminator = NULL;
1272     NTSTATUS ret;
1273
1274     TRACE("(%s, %p, %p)\n", debugstr_a(str), terminator, address);
1275
1276     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1277     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1278     ret = ipv6_string_to_address(wstr, FALSE, &wterminator, address, NULL, NULL);
1279     if (terminator && wterminator) *terminator = str + (wterminator - wstr);
1280     return ret;
1281 }
1282
1283 /***********************************************************************
1284  * RtlIpv4AddressToStringExW [NTDLL.@]
1285  *
1286  * Convert the given ipv4 address and optional the port to a string
1287  *
1288  * PARAMS
1289  *  pin     [I]  PTR to the ip address to convert (network byte order)
1290  *  port    [I]  optional port to convert (network byte order)
1291  *  buffer  [O]  destination buffer for the result
1292  *  psize   [IO] PTR to available/used size of the destination buffer
1293  *
1294  * RETURNS
1295  *  Success: STATUS_SUCCESS
1296  *  Failure: STATUS_INVALID_PARAMETER
1297  *
1298  */
1299 NTSTATUS WINAPI RtlIpv4AddressToStringExW(const IN_ADDR *pin, USHORT port, LPWSTR buffer, PULONG psize)
1300 {
1301     WCHAR tmp_ip[32];
1302     ULONG needed;
1303
1304     if (!pin || !buffer || !psize)
1305         return STATUS_INVALID_PARAMETER;
1306
1307     TRACE("(%p:0x%lx, %d, %p, %p:%ld)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1308
1309     needed = swprintf(tmp_ip, ARRAY_SIZE(tmp_ip), L"%u.%u.%u.%u",
1310                       pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1311                       pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1312
1313     if (port) needed += swprintf(tmp_ip + needed, ARRAY_SIZE(tmp_ip) - needed, L":%u", ntohs(port));
1314
1315     if (*psize > needed) {
1316         *psize = needed + 1;
1317         wcscpy(buffer, tmp_ip);
1318         return STATUS_SUCCESS;
1319     }
1320
1321     *psize = needed + 1;
1322     return STATUS_INVALID_PARAMETER;
1323 }
1324
1325 /***********************************************************************
1326  * RtlIpv4AddressToStringExA [NTDLL.@]
1327  *
1328  * Convert the given ipv4 address and optional the port to a string
1329  *
1330  * See RtlIpv4AddressToStringExW
1331  */
1332 NTSTATUS WINAPI RtlIpv4AddressToStringExA(const IN_ADDR *pin, USHORT port, LPSTR buffer, PULONG psize)
1333 {
1334     CHAR tmp_ip[32];
1335     ULONG needed;
1336
1337     if (!pin || !buffer || !psize)
1338         return STATUS_INVALID_PARAMETER;
1339
1340     TRACE("(%p:0x%lx, %d, %p, %p:%ld)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1341
1342     needed = sprintf(tmp_ip, "%u.%u.%u.%u",
1343                      pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1344                      pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1345
1346     if (port) needed += sprintf(tmp_ip + needed, ":%u", ntohs(port));
1347
1348     if (*psize > needed) {
1349         *psize = needed + 1;
1350         strcpy(buffer, tmp_ip);
1351         return STATUS_SUCCESS;
1352     }
1353
1354     *psize = needed + 1;
1355     return STATUS_INVALID_PARAMETER;
1356 }
1357
1358 /***********************************************************************
1359  * RtlIpv4AddressToStringW [NTDLL.@]
1360  *
1361  * Convert the given ipv4 address to a string
1362  *
1363  * PARAMS
1364  *  pin     [I]  PTR to the ip address to convert (network byte order)
1365  *  buffer  [O]  destination buffer for the result (at least 16 character)
1366  *
1367  * RETURNS
1368  *  PTR to the 0 character at the end of the converted string
1369  *
1370  */
1371 WCHAR * WINAPI RtlIpv4AddressToStringW(const IN_ADDR *pin, LPWSTR buffer)
1372 {
1373     ULONG size = 16;
1374
1375     if (RtlIpv4AddressToStringExW(pin, 0, buffer, &size)) size = 0;
1376     return buffer + size - 1;
1377 }
1378
1379 /***********************************************************************
1380  * RtlIpv4AddressToStringA [NTDLL.@]
1381  *
1382  * Convert the given ipv4 address to a string
1383  *
1384  * See RtlIpv4AddressToStringW
1385  */
1386 CHAR * WINAPI RtlIpv4AddressToStringA(const IN_ADDR *pin, LPSTR buffer)
1387 {
1388     ULONG size = 16;
1389
1390     if (RtlIpv4AddressToStringExA(pin, 0, buffer, &size)) size = 0;
1391     return buffer + size - 1;
1392 }
1393
1394 static BOOL is_ipv4_in_ipv6(const IN6_ADDR *address)
1395 {
1396     if (address->s6_words[5] == htons(0x5efe) && (address->s6_words[4] & ~htons(0x200)) == 0)
1397         return TRUE;
1398     if (*(UINT64 *)address != 0)
1399         return FALSE;
1400     if (address->s6_words[4] != 0 && address->s6_words[4] != 0xffff)
1401         return FALSE;
1402     if (address->s6_words[4] == 0 && address->s6_words[5] != 0 && address->s6_words[5] != 0xffff)
1403         return FALSE;
1404     if (address->s6_words[4] == 0xffff && address->s6_words[5] != 0)
1405         return FALSE;
1406     if (address->s6_words[6] == 0)
1407         return FALSE;
1408     return TRUE;
1409 }
1410
1411 /***********************************************************************
1412  * RtlIpv6AddressToStringExA [NTDLL.@]
1413  */
1414 NTSTATUS WINAPI RtlIpv6AddressToStringExA(const IN6_ADDR *address, ULONG scope, USHORT port, char *str, ULONG *size)
1415 {
1416     char buffer[64], *p = buffer;
1417     int i, len, gap = -1, gap_len = 1, ipv6_end = 8;
1418     ULONG needed;
1419     NTSTATUS ret;
1420
1421     TRACE("(%p %lu %u %p %p)\n", address, scope, port, str, size);
1422
1423     if (!address || !str || !size)
1424         return STATUS_INVALID_PARAMETER;
1425
1426     if (is_ipv4_in_ipv6(address))
1427         ipv6_end = 6;
1428
1429     for (i = 0; i < ipv6_end; i++)
1430     {
1431         len = 0;
1432         while (!address->s6_words[i] && i < ipv6_end)
1433         {
1434             i++;
1435             len++;
1436         }
1437         if (len > gap_len)
1438         {
1439             gap = i - len;
1440             gap_len = len;
1441         }
1442     }
1443
1444     if (port) p += sprintf(p, "[");
1445
1446     i = 0;
1447     while (i < ipv6_end)
1448     {
1449         if (i == gap)
1450         {
1451             p += sprintf(p, ":");
1452             i += gap_len;
1453             if (i == ipv6_end) p += sprintf(p, ":");
1454             continue;
1455         }
1456         if (i > 0) p += sprintf(p, ":");
1457         p += sprintf(p, "%x", ntohs(address->s6_words[i]));
1458         i++;
1459     }
1460
1461     if (ipv6_end == 6)
1462     {
1463         if (p[-1] != ':') p += sprintf(p, ":");
1464         p = RtlIpv4AddressToStringA((IN_ADDR *)(address->s6_words + 6), p);
1465     }
1466
1467     if (scope) p += sprintf(p, "%%%lu", scope);
1468
1469     if (port) p += sprintf(p, "]:%u", ntohs(port));
1470
1471     needed = p - buffer + 1;
1472
1473     if (*size >= needed)
1474     {
1475         strcpy(str, buffer);
1476         ret = STATUS_SUCCESS;
1477     }
1478     else
1479     {
1480         ret = STATUS_INVALID_PARAMETER;
1481     }
1482
1483     *size = needed;
1484     return ret;
1485 }
1486
1487 /***********************************************************************
1488  * RtlIpv6AddressToStringA [NTDLL.@]
1489  */
1490 char * WINAPI RtlIpv6AddressToStringA(const IN6_ADDR *address, char *str)
1491 {
1492     ULONG size = 46;
1493     if (!address || !str) return str - 1;
1494     str[45] = 0; /* this byte is set even though the string is always shorter */
1495     RtlIpv6AddressToStringExA(address, 0, 0, str, &size);
1496     return str + size - 1;
1497 }
1498
1499 /***********************************************************************
1500  * RtlIpv6AddressToStringExW [NTDLL.@]
1501  */
1502 NTSTATUS WINAPI RtlIpv6AddressToStringExW(const IN6_ADDR *address, ULONG scope, USHORT port, WCHAR *str, ULONG *size)
1503 {
1504     char cstr[64];
1505     NTSTATUS ret = RtlIpv6AddressToStringExA(address, scope, port, cstr, size);
1506     if (ret == STATUS_SUCCESS) RtlMultiByteToUnicodeN(str, *size * sizeof(WCHAR), NULL, cstr, *size);
1507     return ret;
1508 }
1509
1510 /***********************************************************************
1511  * RtlIpv6AddressToStringW [NTDLL.@]
1512  */
1513 WCHAR * WINAPI RtlIpv6AddressToStringW(const IN6_ADDR *address, WCHAR *str)
1514 {
1515     ULONG size = 46;
1516     if (!address || !str) return str;
1517     str[45] = 0; /* this word is set even though the string is always shorter */
1518     if (RtlIpv6AddressToStringExW(address, 0, 0, str, &size) != STATUS_SUCCESS)
1519         return str;
1520     return str + size - 1;
1521 }
1522
1523 /***********************************************************************
1524  * get_pointer_obfuscator (internal)
1525  */
1526 static DWORD_PTR get_pointer_obfuscator( void )
1527 {
1528     static DWORD_PTR pointer_obfuscator;
1529
1530     if (!pointer_obfuscator)
1531     {
1532         ULONG seed = NtGetTickCount();
1533         ULONG_PTR rand;
1534
1535         /* generate a random value for the obfuscator */
1536         rand = RtlUniform( &seed );
1537
1538         /* handle 64bit pointers */
1539         rand ^= (ULONG_PTR)RtlUniform( &seed ) << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1540
1541         /* set the high bits so dereferencing obfuscated pointers will (usually) crash */
1542         rand |= (ULONG_PTR)0xc0000000 << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1543
1544         InterlockedCompareExchangePointer( (void**) &pointer_obfuscator, (void*) rand, NULL );
1545     }
1546
1547     return pointer_obfuscator;
1548 }
1549
1550 /*************************************************************************
1551  * RtlEncodePointer   [NTDLL.@]
1552  */
1553 PVOID WINAPI RtlEncodePointer( PVOID ptr )
1554 {
1555     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1556     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1557 }
1558
1559 PVOID WINAPI RtlDecodePointer( PVOID ptr )
1560 {
1561     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1562     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1563 }
1564
1565 /*************************************************************************
1566  * RtlInitializeSListHead   [NTDLL.@]
1567  */
1568 VOID WINAPI RtlInitializeSListHead(PSLIST_HEADER list)
1569 {
1570 #ifdef _WIN64
1571     list->Alignment = list->Region = 0;
1572     list->Header16.HeaderType = 1;  /* we use the 16-byte header */
1573 #else
1574     list->Alignment = 0;
1575 #endif
1576 }
1577
1578 /*************************************************************************
1579  * RtlQueryDepthSList   [NTDLL.@]
1580  */
1581 WORD WINAPI RtlQueryDepthSList(PSLIST_HEADER list)
1582 {
1583 #ifdef _WIN64
1584     return list->Header16.Depth;
1585 #else
1586     return list->Depth;
1587 #endif
1588 }
1589
1590 /*************************************************************************
1591  * RtlFirstEntrySList   [NTDLL.@]
1592  */
1593 PSLIST_ENTRY WINAPI RtlFirstEntrySList(const SLIST_HEADER* list)
1594 {
1595 #ifdef _WIN64
1596     return (SLIST_ENTRY *)((ULONG_PTR)list->Header16.NextEntry << 4);
1597 #else
1598     return list->Next.Next;
1599 #endif
1600 }
1601
1602 /*************************************************************************
1603  * RtlInterlockedFlushSList   [NTDLL.@]
1604  */
1605 PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
1606 {
1607     SLIST_HEADER old, new;
1608
1609 #ifdef _WIN64
1610     if (!list->Header16.NextEntry) return NULL;
1611     new.Alignment = new.Region = 0;
1612     new.Header16.HeaderType = 1;  /* we use the 16-byte header */
1613     do
1614     {
1615         old = *list;
1616         new.Header16.Sequence = old.Header16.Sequence + 1;
1617     } while (!InterlockedCompareExchange128((__int64 *)list, new.Region, new.Alignment, (__int64 *)&old));
1618     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1619 #else
1620     if (!list->Next.Next) return NULL;
1621     new.Alignment = 0;
1622     do
1623     {
1624         old = *list;
1625         new.Sequence = old.Sequence + 1;
1626     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1627                                           old.Alignment) != old.Alignment);
1628     return old.Next.Next;
1629 #endif
1630 }
1631
1632 /*************************************************************************
1633  * RtlInterlockedPushEntrySList   [NTDLL.@]
1634  */
1635 PSLIST_ENTRY WINAPI RtlInterlockedPushEntrySList(PSLIST_HEADER list, PSLIST_ENTRY entry)
1636 {
1637     SLIST_HEADER old, new;
1638
1639 #ifdef _WIN64
1640     new.Header16.NextEntry = (ULONG_PTR)entry >> 4;
1641     do
1642     {
1643         old = *list;
1644         entry->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1645         new.Header16.Depth = old.Header16.Depth + 1;
1646         new.Header16.Sequence = old.Header16.Sequence + 1;
1647     } while (!InterlockedCompareExchange128((__int64 *)list, new.Region, new.Alignment, (__int64 *)&old));
1648     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1649 #else
1650     new.Next.Next = entry;
1651     do
1652     {
1653         old = *list;
1654         entry->Next = old.Next.Next;
1655         new.Depth = old.Depth + 1;
1656         new.Sequence = old.Sequence + 1;
1657     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1658                                           old.Alignment) != old.Alignment);
1659     return old.Next.Next;
1660 #endif
1661 }
1662
1663 /*************************************************************************
1664  * RtlInterlockedPopEntrySList   [NTDLL.@]
1665  */
1666 PSLIST_ENTRY WINAPI RtlInterlockedPopEntrySList(PSLIST_HEADER list)
1667 {
1668     SLIST_HEADER old, new;
1669     PSLIST_ENTRY entry;
1670
1671 #ifdef _WIN64
1672     do
1673     {
1674         old = *list;
1675         if (!(entry = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4))) return NULL;
1676         /* entry could be deleted by another thread */
1677         __TRY
1678         {
1679             new.Header16.NextEntry = (ULONG_PTR)entry->Next >> 4;
1680             new.Header16.Depth = old.Header16.Depth - 1;
1681             new.Header16.Sequence = old.Header16.Sequence + 1;
1682         }
1683         __EXCEPT_PAGE_FAULT
1684         {
1685         }
1686         __ENDTRY
1687     } while (!InterlockedCompareExchange128((__int64 *)list, new.Region, new.Alignment, (__int64 *)&old));
1688 #else
1689     do
1690     {
1691         old = *list;
1692         if (!(entry = old.Next.Next)) return NULL;
1693         /* entry could be deleted by another thread */
1694         __TRY
1695         {
1696             new.Next.Next = entry->Next;
1697             new.Depth = old.Depth - 1;
1698             new.Sequence = old.Sequence + 1;
1699         }
1700         __EXCEPT_PAGE_FAULT
1701         {
1702         }
1703         __ENDTRY
1704     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1705                                           old.Alignment) != old.Alignment);
1706 #endif
1707     return entry;
1708 }
1709
1710 /*************************************************************************
1711  * RtlInterlockedPushListSListEx   [NTDLL.@]
1712  */
1713 PSLIST_ENTRY WINAPI RtlInterlockedPushListSListEx(PSLIST_HEADER list, PSLIST_ENTRY first,
1714                                                   PSLIST_ENTRY last, ULONG count)
1715 {
1716     SLIST_HEADER old, new;
1717
1718 #ifdef _WIN64
1719     new.Header16.NextEntry = (ULONG_PTR)first >> 4;
1720     do
1721     {
1722         old = *list;
1723         new.Header16.Depth = old.Header16.Depth + count;
1724         new.Header16.Sequence = old.Header16.Sequence + 1;
1725         last->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1726     } while (!InterlockedCompareExchange128((__int64 *)list, new.Region, new.Alignment, (__int64 *)&old));
1727     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1728 #else
1729     new.Next.Next = first;
1730     do
1731     {
1732         old = *list;
1733         new.Depth = old.Depth + count;
1734         new.Sequence = old.Sequence + 1;
1735         last->Next = old.Next.Next;
1736     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1737                                           old.Alignment) != old.Alignment);
1738     return old.Next.Next;
1739 #endif
1740 }
1741
1742 /*************************************************************************
1743  * RtlInterlockedPushListSList   [NTDLL.@]
1744  */
1745 DEFINE_FASTCALL_WRAPPER(RtlInterlockedPushListSList, 16)
1746 PSLIST_ENTRY FASTCALL RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
1747                                                   PSLIST_ENTRY last, ULONG count)
1748 {
1749     return RtlInterlockedPushListSListEx(list, first, last, count);
1750 }
1751
1752 /******************************************************************************
1753  *  RtlGetCompressionWorkSpaceSize              [NTDLL.@]
1754  */
1755 NTSTATUS WINAPI RtlGetCompressionWorkSpaceSize(USHORT format, PULONG compress_workspace,
1756                                                PULONG decompress_workspace)
1757 {
1758     FIXME("0x%04x, %p, %p: semi-stub\n", format, compress_workspace, decompress_workspace);
1759
1760     switch (format & COMPRESSION_FORMAT_MASK)
1761     {
1762         case COMPRESSION_FORMAT_LZNT1:
1763             if (compress_workspace)
1764             {
1765                 /* FIXME: The current implementation of RtlCompressBuffer does not use a
1766                  * workspace buffer, but Windows applications might expect a nonzero value. */
1767                 *compress_workspace = 16;
1768             }
1769             if (decompress_workspace)
1770                 *decompress_workspace = 0x1000;
1771             return STATUS_SUCCESS;
1772
1773         case COMPRESSION_FORMAT_NONE:
1774         case COMPRESSION_FORMAT_DEFAULT:
1775             return STATUS_INVALID_PARAMETER;
1776
1777         default:
1778             FIXME("format %u not implemented\n", format);
1779             return STATUS_UNSUPPORTED_COMPRESSION;
1780     }
1781 }
1782
1783 /* compress data using LZNT1, currently only a stub */
1784 static NTSTATUS lznt1_compress(UCHAR *src, ULONG src_size, UCHAR *dst, ULONG dst_size,
1785                                ULONG chunk_size, ULONG *final_size, UCHAR *workspace)
1786 {
1787     UCHAR *src_cur = src, *src_end = src + src_size;
1788     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1789     ULONG block_size;
1790
1791     while (src_cur < src_end)
1792     {
1793         /* determine size of current chunk */
1794         block_size = min(0x1000, src_end - src_cur);
1795         if (dst_cur + sizeof(WORD) + block_size > dst_end)
1796             return STATUS_BUFFER_TOO_SMALL;
1797
1798         /* write (uncompressed) chunk header */
1799         *(WORD *)dst_cur = 0x3000 | (block_size - 1);
1800         dst_cur += sizeof(WORD);
1801
1802         /* write chunk content */
1803         memcpy(dst_cur, src_cur, block_size);
1804         dst_cur += block_size;
1805         src_cur += block_size;
1806     }
1807
1808     if (final_size)
1809         *final_size = dst_cur - dst;
1810
1811     return STATUS_SUCCESS;
1812 }
1813
1814 /******************************************************************************
1815  *  RtlCompressBuffer           [NTDLL.@]
1816  */
1817 NTSTATUS WINAPI RtlCompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
1818                                   PUCHAR compressed, ULONG compressed_size, ULONG chunk_size,
1819                                   PULONG final_size, PVOID workspace)
1820 {
1821     FIXME("0x%04x, %p, %lu, %p, %lu, %lu, %p, %p: semi-stub\n", format, uncompressed,
1822           uncompressed_size, compressed, compressed_size, chunk_size, final_size, workspace);
1823
1824     switch (format & COMPRESSION_FORMAT_MASK)
1825     {
1826         case COMPRESSION_FORMAT_LZNT1:
1827             return lznt1_compress(uncompressed, uncompressed_size, compressed,
1828                                   compressed_size, chunk_size, final_size, workspace);
1829
1830         case COMPRESSION_FORMAT_NONE:
1831         case COMPRESSION_FORMAT_DEFAULT:
1832             return STATUS_INVALID_PARAMETER;
1833
1834         default:
1835             FIXME("format %u not implemented\n", format);
1836             return STATUS_UNSUPPORTED_COMPRESSION;
1837     }
1838 }
1839
1840 /* decompress a single LZNT1 chunk */
1841 static UCHAR *lznt1_decompress_chunk(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size)
1842 {
1843     UCHAR *src_cur = src, *src_end = src + src_size;
1844     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1845     ULONG displacement_bits, length_bits;
1846     ULONG code_displacement, code_length;
1847     WORD flags, code;
1848
1849     while (src_cur < src_end && dst_cur < dst_end)
1850     {
1851         flags = 0x8000 | *src_cur++;
1852         while ((flags & 0xff00) && src_cur < src_end)
1853         {
1854             if (flags & 1)
1855             {
1856                 /* backwards reference */
1857                 if (src_cur + sizeof(WORD) > src_end)
1858                     return NULL;
1859
1860                 code = *(WORD *)src_cur;
1861                 src_cur += sizeof(WORD);
1862
1863                 /* find length / displacement bits */
1864                 for (displacement_bits = 12; displacement_bits > 4; displacement_bits--)
1865                     if ((1 << (displacement_bits - 1)) < dst_cur - dst) break;
1866
1867                 length_bits       = 16 - displacement_bits;
1868                 code_length       = (code & ((1 << length_bits) - 1)) + 3;
1869                 code_displacement = (code >> length_bits) + 1;
1870
1871                 if (dst_cur < dst + code_displacement)
1872                     return NULL;
1873
1874                 /* copy bytes of chunk - we can't use memcpy() since source and dest can
1875                  * be overlapping, and the same bytes can be repeated over and over again */
1876                 while (code_length--)
1877                 {
1878                     if (dst_cur >= dst_end) return dst_cur;
1879                     *dst_cur = *(dst_cur - code_displacement);
1880                     dst_cur++;
1881                 }
1882             }
1883             else
1884             {
1885                 /* uncompressed data */
1886                 if (dst_cur >= dst_end) return dst_cur;
1887                 *dst_cur++ = *src_cur++;
1888             }
1889             flags >>= 1;
1890         }
1891     }
1892
1893     return dst_cur;
1894 }
1895
1896 /* decompress data encoded with LZNT1 */
1897 static NTSTATUS lznt1_decompress(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size,
1898                                  ULONG offset, ULONG *final_size, UCHAR *workspace)
1899 {
1900     UCHAR *src_cur = src, *src_end = src + src_size;
1901     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1902     ULONG chunk_size, block_size;
1903     WORD chunk_header;
1904     UCHAR *ptr;
1905
1906     if (src_cur + sizeof(WORD) > src_end)
1907         return STATUS_BAD_COMPRESSION_BUFFER;
1908
1909     /* skip over chunks with a distance >= 0x1000 to the destination offset */
1910     while (offset >= 0x1000 && src_cur + sizeof(WORD) <= src_end)
1911     {
1912         chunk_header = *(WORD *)src_cur;
1913         src_cur += sizeof(WORD);
1914         if (!chunk_header) goto out;
1915         chunk_size = (chunk_header & 0xfff) + 1;
1916
1917         if (src_cur + chunk_size > src_end)
1918             return STATUS_BAD_COMPRESSION_BUFFER;
1919
1920         src_cur += chunk_size;
1921         offset  -= 0x1000;
1922     }
1923
1924     /* handle partially included chunk */
1925     if (offset && src_cur + sizeof(WORD) <= src_end)
1926     {
1927         chunk_header = *(WORD *)src_cur;
1928         src_cur += sizeof(WORD);
1929         if (!chunk_header) goto out;
1930         chunk_size = (chunk_header & 0xfff) + 1;
1931
1932         if (src_cur + chunk_size > src_end)
1933             return STATUS_BAD_COMPRESSION_BUFFER;
1934
1935         if (dst_cur >= dst_end)
1936             goto out;
1937
1938         if (chunk_header & 0x8000)
1939         {
1940             /* compressed chunk */
1941             if (!workspace) return STATUS_ACCESS_VIOLATION;
1942             ptr = lznt1_decompress_chunk(workspace, 0x1000, src_cur, chunk_size);
1943             if (!ptr) return STATUS_BAD_COMPRESSION_BUFFER;
1944             if (ptr - workspace > offset)
1945             {
1946                 block_size = min((ptr - workspace) - offset, dst_end - dst_cur);
1947                 memcpy(dst_cur, workspace + offset, block_size);
1948                 dst_cur += block_size;
1949             }
1950         }
1951         else
1952         {
1953             /* uncompressed chunk */
1954             if (chunk_size > offset)
1955             {
1956                 block_size = min(chunk_size - offset, dst_end - dst_cur);
1957                 memcpy(dst_cur, src_cur + offset, block_size);
1958                 dst_cur += block_size;
1959             }
1960         }
1961
1962         src_cur += chunk_size;
1963     }
1964
1965     /* handle remaining chunks */
1966     while (src_cur + sizeof(WORD) <= src_end)
1967     {
1968         chunk_header = *(WORD *)src_cur;
1969         src_cur += sizeof(WORD);
1970         if (!chunk_header) goto out;
1971         chunk_size = (chunk_header & 0xfff) + 1;
1972
1973         if (src_cur + chunk_size > src_end)
1974             return STATUS_BAD_COMPRESSION_BUFFER;
1975
1976         /* fill space with padding when the previous chunk was decompressed
1977          * to less than 4096 bytes. no padding is needed for the last chunk
1978          * or when the next chunk is truncated */
1979         block_size = ((dst_cur - dst) + offset) & 0xfff;
1980         if (block_size)
1981         {
1982             block_size = 0x1000 - block_size;
1983             if (dst_cur + block_size >= dst_end)
1984                 goto out;
1985             memset(dst_cur, 0, block_size);
1986             dst_cur += block_size;
1987         }
1988
1989         if (dst_cur >= dst_end)
1990             goto out;
1991
1992         if (chunk_header & 0x8000)
1993         {
1994             /* compressed chunk */
1995             dst_cur = lznt1_decompress_chunk(dst_cur, dst_end - dst_cur, src_cur, chunk_size);
1996             if (!dst_cur) return STATUS_BAD_COMPRESSION_BUFFER;
1997         }
1998         else
1999         {
2000             /* uncompressed chunk */
2001             block_size = min(chunk_size, dst_end - dst_cur);
2002             memcpy(dst_cur, src_cur, block_size);
2003             dst_cur += block_size;
2004         }
2005
2006         src_cur += chunk_size;
2007     }
2008
2009 out:
2010     if (final_size)
2011         *final_size = dst_cur - dst;
2012
2013     return STATUS_SUCCESS;
2014
2015 }
2016
2017 /******************************************************************************
2018  *  RtlDecompressFragment       [NTDLL.@]
2019  */
2020 NTSTATUS WINAPI RtlDecompressFragment(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2021                                PUCHAR compressed, ULONG compressed_size, ULONG offset,
2022                                PULONG final_size, PVOID workspace)
2023 {
2024     TRACE("0x%04x, %p, %lu, %p, %lu, %lu, %p, %p\n", format, uncompressed,
2025           uncompressed_size, compressed, compressed_size, offset, final_size, workspace);
2026
2027     switch (format & COMPRESSION_FORMAT_MASK)
2028     {
2029         case COMPRESSION_FORMAT_LZNT1:
2030             return lznt1_decompress(uncompressed, uncompressed_size, compressed,
2031                                     compressed_size, offset, final_size, workspace);
2032
2033         case COMPRESSION_FORMAT_NONE:
2034         case COMPRESSION_FORMAT_DEFAULT:
2035             return STATUS_INVALID_PARAMETER;
2036
2037         default:
2038             FIXME("format %u not implemented\n", format);
2039             return STATUS_UNSUPPORTED_COMPRESSION;
2040     }
2041 }
2042
2043
2044 /******************************************************************************
2045  *  RtlDecompressBuffer         [NTDLL.@]
2046  */
2047 NTSTATUS WINAPI RtlDecompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2048                                     PUCHAR compressed, ULONG compressed_size, PULONG final_size)
2049 {
2050     TRACE("0x%04x, %p, %lu, %p, %lu, %p\n", format, uncompressed,
2051         uncompressed_size, compressed, compressed_size, final_size);
2052
2053     return RtlDecompressFragment(format, uncompressed, uncompressed_size,
2054                                  compressed, compressed_size, 0, final_size, NULL);
2055 }
2056
2057 /***********************************************************************
2058  *  RtlSetThreadErrorMode       [NTDLL.@]
2059  *
2060  * Set the thread local error mode.
2061  *
2062  * PARAMS
2063  *  mode    [I] The new error mode
2064  *  oldmode [O] Destination of the old error mode (may be NULL)
2065  *
2066  * RETURNS
2067  *  Success: STATUS_SUCCESS
2068  *  Failure: STATUS_INVALID_PARAMETER_1
2069  */
2070 NTSTATUS WINAPI RtlSetThreadErrorMode( DWORD mode, LPDWORD oldmode )
2071 {
2072     if (mode & ~0x70)
2073         return STATUS_INVALID_PARAMETER_1;
2074
2075     if (oldmode)
2076         *oldmode = NtCurrentTeb()->HardErrorMode;
2077
2078     NtCurrentTeb()->HardErrorMode = mode;
2079     return STATUS_SUCCESS;
2080 }
2081
2082 /***********************************************************************
2083  *  RtlGetThreadErrorMode       [NTDLL.@]
2084  *
2085  * Get the thread local error mode.
2086  *
2087  * PARAMS
2088  *  None.
2089  *
2090  * RETURNS
2091  *  The current thread local error mode.
2092  */
2093 DWORD WINAPI RtlGetThreadErrorMode( void )
2094 {
2095     return NtCurrentTeb()->HardErrorMode;
2096 }
2097
2098 /******************************************************************************
2099  * RtlGetCurrentTransaction [NTDLL.@]
2100  */
2101 HANDLE WINAPI RtlGetCurrentTransaction(void)
2102 {
2103     FIXME("() :stub\n");
2104     return NULL;
2105 }
2106
2107 /******************************************************************************
2108  * RtlSetCurrentTransaction [NTDLL.@]
2109  */
2110 BOOL WINAPI RtlSetCurrentTransaction(HANDLE new_transaction)
2111 {
2112     FIXME("(%p) :stub\n", new_transaction);
2113     return FALSE;
2114 }
2115
2116 /**********************************************************************
2117  *           RtlGetCurrentProcessorNumberEx [NTDLL.@]
2118  */
2119 void WINAPI RtlGetCurrentProcessorNumberEx(PROCESSOR_NUMBER *processor)
2120 {
2121     FIXME("(%p) :semi-stub\n", processor);
2122     processor->Group = 0;
2123     processor->Number = NtGetCurrentProcessorNumber();
2124     processor->Reserved = 0;
2125 }
2126
2127 /***********************************************************************
2128  *           RtlIsProcessorFeaturePresent [NTDLL.@]
2129  */
2130 BOOLEAN WINAPI RtlIsProcessorFeaturePresent( UINT feature )
2131 {
2132 #ifdef __aarch64__
2133     static const ULONGLONG arm64_features =
2134         (1ull << PF_COMPARE_EXCHANGE_DOUBLE) |
2135         (1ull << PF_NX_ENABLED) |
2136         (1ull << PF_ARM_VFP_32_REGISTERS_AVAILABLE) |
2137         (1ull << PF_ARM_NEON_INSTRUCTIONS_AVAILABLE) |
2138         (1ull << PF_SECOND_LEVEL_ADDRESS_TRANSLATION) |
2139         (1ull << PF_FASTFAIL_AVAILABLE) |
2140         (1ull << PF_ARM_DIVIDE_INSTRUCTION_AVAILABLE) |
2141         (1ull << PF_ARM_64BIT_LOADSTORE_ATOMIC) |
2142         (1ull << PF_ARM_EXTERNAL_CACHE_AVAILABLE) |
2143         (1ull << PF_ARM_FMAC_INSTRUCTIONS_AVAILABLE) |
2144         (1ull << PF_ARM_V8_INSTRUCTIONS_AVAILABLE) |
2145         (1ull << PF_ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE) |
2146         (1ull << PF_ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE) |
2147         (1ull << PF_ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE) |
2148         (1ull << PF_ARM_V82_DP_INSTRUCTIONS_AVAILABLE) |
2149         (1ull << PF_ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE) |
2150         (1ull << PF_ARM_V83_LRCPC_INSTRUCTIONS_AVAILABLE);
2151
2152     return (feature < PROCESSOR_FEATURE_MAX && (arm64_features & (1ull << feature)) &&
2153             user_shared_data->ProcessorFeatures[feature]);
2154 #elif defined _WIN64
2155     return feature < PROCESSOR_FEATURE_MAX && user_shared_data->ProcessorFeatures[feature];
2156 #else
2157     return NtWow64IsProcessorFeaturePresent( feature );
2158 #endif
2159 }
2160
2161 /***********************************************************************
2162  *           RtlInitializeGenericTableAvl  (NTDLL.@)
2163  */
2164 void WINAPI RtlInitializeGenericTableAvl(PRTL_AVL_TABLE table, PRTL_AVL_COMPARE_ROUTINE compare,
2165                                          PRTL_AVL_ALLOCATE_ROUTINE allocate, PRTL_AVL_FREE_ROUTINE free, void *context)
2166 {
2167     FIXME("%p %p %p %p %p: stub\n", table, compare, allocate, free, context);
2168 }
2169
2170 /***********************************************************************
2171  *           RtlInsertElementGenericTableAvl  (NTDLL.@)
2172  */
2173 void WINAPI RtlInsertElementGenericTableAvl(PRTL_AVL_TABLE table, void *buffer, ULONG size, BOOL *element)
2174 {
2175     FIXME("%p %p %lu %p: stub\n", table, buffer, size, element);
2176 }
2177
2178 /*********************************************************************
2179  *           RtlQueryPackageIdentity [NTDLL.@]
2180  */
2181 NTSTATUS WINAPI RtlQueryPackageIdentity(HANDLE token, WCHAR *fullname, SIZE_T *fullname_size,
2182                                         WCHAR *appid, SIZE_T *appid_size, BOOLEAN *packaged)
2183 {
2184     FIXME("(%p, %p, %p, %p, %p, %p): stub\n", token, fullname, fullname_size, appid, appid_size, packaged);
2185     return STATUS_NOT_FOUND;
2186 }
2187
2188 /*********************************************************************
2189  *           RtlQueryProcessPlaceholderCompatibilityMode [NTDLL.@]
2190  */
2191 char WINAPI RtlQueryProcessPlaceholderCompatibilityMode(void)
2192 {
2193     FIXME("stub\n");
2194     return PHCM_APPLICATION_DEFAULT;
2195 }