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 NONAMELESSUNION
  30 #define NONAMELESSSTRUCT
  31 #define WIN32_NO_STATUS
  32 #include "winsock2.h"
  33 #include "windef.h"
  34 #include "winternl.h"
  35 #include "wine/debug.h"
  36 #include "wine/exception.h"
  37 #include "ntdll_misc.h"
  38 #include "in6addr.h"
  39 #include "ddk/ntddk.h"
  40
  41 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  42 WINE_DECLARE_DEBUG_CHANNEL(debugstr);
  43
  44 /* CRC polynomial 0xedb88320 */
  45 static const DWORD CRC_table[256] =
  46 {
  47     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
  48     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  49     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
  50     0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  51     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
  52     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  53     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
  54     0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  55     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
  56     0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  57     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
  58     0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  59     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
  60     0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  61     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
  62     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  63     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
  64     0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  65     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
  66     0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  67     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
  68     0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  69     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
  70     0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  71     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
  72     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  73     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
  74     0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  75     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
  76     0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  77     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
  78     0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  79     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
  80     0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  81     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
  82     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  83     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
  84     0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  85     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
  86     0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  87     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
  88     0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  89     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
  90 };
  91
  92 static const int hex_table[] = {
  93     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0F */
  94     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1F */
  95     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2F */
  96      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0x30-0x3F */
  97     -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4F */
  98     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5F */
  99     -1, 10, 11, 12, 13, 14, 15                                      /* 0x60-0x66 */
 100 };
 101
 102 /*
 103  *      resource functions
 104  */
 105
 106 /***********************************************************************
 107  *           RtlInitializeResource      (NTDLL.@)
 108  *
 109  * xxxResource() functions implement multiple-reader-single-writer lock.
 110  * The code is based on information published in WDJ January 1999 issue.
 111  */
 112 void WINAPI RtlInitializeResource(LPRTL_RWLOCK rwl)
 113 {
 114     if( rwl )
 115     {
 116         rwl->iNumberActive = 0;
 117         rwl->uExclusiveWaiters = 0;
 118         rwl->uSharedWaiters = 0;
 119         rwl->hOwningThreadId = 0;
 120         rwl->dwTimeoutBoost = 0; /* no info on this one, default value is 0 */
 121         RtlInitializeCriticalSection( &rwl->rtlCS );
 122         rwl->rtlCS.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": RTL_RWLOCK.rtlCS");
 123         NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 124         NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 125     }
 126 }
 127
 128
 129 /***********************************************************************
 130  *           RtlDeleteResource          (NTDLL.@)
 131  */
 132 void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
 133 {
 134     if( rwl )
 135     {
 136         RtlEnterCriticalSection( &rwl->rtlCS );
 137         if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
 138             ERR("Deleting active MRSW lock (%p), expect failure\n", rwl );
 139         rwl->hOwningThreadId = 0;
 140         rwl->uExclusiveWaiters = rwl->uSharedWaiters = 0;
 141         rwl->iNumberActive = 0;
 142         NtClose( rwl->hExclusiveReleaseSemaphore );
 143         NtClose( rwl->hSharedReleaseSemaphore );
 144         RtlLeaveCriticalSection( &rwl->rtlCS );
 145         rwl->rtlCS.DebugInfo->Spare[0] = 0;
 146         RtlDeleteCriticalSection( &rwl->rtlCS );
 147     }
 148 }
 149
 150
 151 /***********************************************************************
 152  *          RtlAcquireResourceExclusive (NTDLL.@)
 153  */
 154 BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl, BYTE fWait)
 155 {
 156     BYTE retVal = 0;
 157     if( !rwl ) return 0;
 158
 159 start:
 160     RtlEnterCriticalSection( &rwl->rtlCS );
 161     if( rwl->iNumberActive == 0 ) /* lock is free */
 162     {
 163         rwl->iNumberActive = -1;
 164         retVal = 1;
 165     }
 166     else if( rwl->iNumberActive < 0 ) /* exclusive lock in progress */
 167     {
 168          if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 169          {
 170              retVal = 1;
 171              rwl->iNumberActive--;
 172              goto done;
 173          }
 174 wait:
 175          if( fWait )
 176          {
 177              NTSTATUS status;
 178
 179              rwl->uExclusiveWaiters++;
 180
 181              RtlLeaveCriticalSection( &rwl->rtlCS );
 182              status = NtWaitForSingleObject( rwl->hExclusiveReleaseSemaphore, FALSE, NULL );
 183              if( HIWORD(status) )
 184                  goto done;
 185              goto start; /* restart the acquisition to avoid deadlocks */
 186          }
 187     }
 188     else  /* one or more shared locks are in progress */
 189          if( fWait )
 190              goto wait;
 191
 192     if( retVal == 1 )
 193         rwl->hOwningThreadId = ULongToHandle(GetCurrentThreadId());
 194 done:
 195     RtlLeaveCriticalSection( &rwl->rtlCS );
 196     return retVal;
 197 }
 198
 199 /***********************************************************************
 200  *          RtlAcquireResourceShared    (NTDLL.@)
 201  */
 202 BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
 203 {
 204     NTSTATUS status = STATUS_UNSUCCESSFUL;
 205     BYTE retVal = 0;
 206     if( !rwl ) return 0;
 207
 208 start:
 209     RtlEnterCriticalSection( &rwl->rtlCS );
 210     if( rwl->iNumberActive < 0 )
 211     {
 212         if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 213         {
 214             rwl->iNumberActive--;
 215             retVal = 1;
 216             goto done;
 217         }
 218
 219         if( fWait )
 220         {
 221             rwl->uSharedWaiters++;
 222             RtlLeaveCriticalSection( &rwl->rtlCS );
 223             status = NtWaitForSingleObject( rwl->hSharedReleaseSemaphore, FALSE, NULL );
 224             if( HIWORD(status) )
 225                 goto done;
 226             goto start;
 227         }
 228     }
 229     else
 230     {
 231         if( status != STATUS_WAIT_0 ) /* otherwise RtlReleaseResource() has already done it */
 232             rwl->iNumberActive++;
 233         retVal = 1;
 234     }
 235 done:
 236     RtlLeaveCriticalSection( &rwl->rtlCS );
 237     return retVal;
 238 }
 239
 240
 241 /***********************************************************************
 242  *           RtlReleaseResource         (NTDLL.@)
 243  */
 244 void WINAPI RtlReleaseResource(LPRTL_RWLOCK rwl)
 245 {
 246     RtlEnterCriticalSection( &rwl->rtlCS );
 247
 248     if( rwl->iNumberActive > 0 ) /* have one or more readers */
 249     {
 250         if( --rwl->iNumberActive == 0 )
 251         {
 252             if( rwl->uExclusiveWaiters )
 253             {
 254 wake_exclusive:
 255                 rwl->uExclusiveWaiters--;
 256                 NtReleaseSemaphore( rwl->hExclusiveReleaseSemaphore, 1, NULL );
 257             }
 258         }
 259     }
 260     else
 261     if( rwl->iNumberActive < 0 ) /* have a writer, possibly recursive */
 262     {
 263         if( ++rwl->iNumberActive == 0 )
 264         {
 265             rwl->hOwningThreadId = 0;
 266             if( rwl->uExclusiveWaiters )
 267                 goto wake_exclusive;
 268             else
 269                 if( rwl->uSharedWaiters )
 270                 {
 271                     UINT n = rwl->uSharedWaiters;
 272                     rwl->iNumberActive = rwl->uSharedWaiters; /* prevent new writers from joining until
 273                                                                * all queued readers have done their thing */
 274                     rwl->uSharedWaiters = 0;
 275                     NtReleaseSemaphore( rwl->hSharedReleaseSemaphore, n, NULL );
 276                 }
 277         }
 278     }
 279     RtlLeaveCriticalSection( &rwl->rtlCS );
 280 }
 281
 282
 283 /***********************************************************************
 284  *           RtlDumpResource            (NTDLL.@)
 285  */
 286 void WINAPI RtlDumpResource(LPRTL_RWLOCK rwl)
 287 {
 288     if( rwl )
 289     {
 290         MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
 291                 rwl, rwl->iNumberActive, rwl->uSharedWaiters, rwl->uExclusiveWaiters );
 292         if( rwl->iNumberActive )
 293             MESSAGE("\towner thread = %p\n", rwl->hOwningThreadId );
 294     }
 295 }
 296
 297 /*
 298  *      misc functions
 299  */
 300
 301 static LONG WINAPI debug_exception_handler( EXCEPTION_POINTERS *eptr )
 302 {
 303     EXCEPTION_RECORD *rec = eptr->ExceptionRecord;
 304     return (rec->ExceptionCode == DBG_PRINTEXCEPTION_C) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
 305 }
 306
 307 /******************************************************************************
 308  *      DbgPrint        [NTDLL.@]
 309  */
 310 NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...)
 311 {
 312     NTSTATUS ret;
 313     __ms_va_list args;
 314
 315     __ms_va_start(args, fmt);
 316     ret = vDbgPrintEx(0, DPFLTR_ERROR_LEVEL, fmt, args);
 317     __ms_va_end(args);
 318     return ret;
 319 }
 320
 321
 322 /******************************************************************************
 323  *      DbgPrintEx      [NTDLL.@]
 324  */
 325 NTSTATUS WINAPIV DbgPrintEx(ULONG iComponentId, ULONG Level, LPCSTR fmt, ...)
 326 {
 327     NTSTATUS ret;
 328     __ms_va_list args;
 329
 330     __ms_va_start(args, fmt);
 331     ret = vDbgPrintEx(iComponentId, Level, fmt, args);
 332     __ms_va_end(args);
 333     return ret;
 334 }
 335
 336 /******************************************************************************
 337  *      vDbgPrintEx     [NTDLL.@]
 338  */
 339 NTSTATUS WINAPI vDbgPrintEx( ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
 340 {
 341     return vDbgPrintExWithPrefix( "", id, level, fmt, args );
 342 }
 343
 344 /******************************************************************************
 345  *      vDbgPrintExWithPrefix  [NTDLL.@]
 346  */
 347 NTSTATUS WINAPI vDbgPrintExWithPrefix( LPCSTR prefix, ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
 348 {
 349     ULONG level_mask = level <= 31 ? (1 << level) : level;
 350     SIZE_T len = strlen( prefix );
 351     char buf[1024], *end;
 352
 353     strcpy( buf, prefix );
 354     len += _vsnprintf( buf + len, sizeof(buf) - len, fmt, args );
 355     end = buf + len - 1;
 356
 357     WARN_(debugstr)(*end == '\n' ? "%08x:%08x: %s" : "%08x:%08x: %s\n", id, level_mask, buf);
 358
 359     if (level_mask & (1 << DPFLTR_ERROR_LEVEL) && NtCurrentTeb()->Peb->BeingDebugged)
 360     {
 361         __TRY
 362         {
 363             EXCEPTION_RECORD record;
 364             record.ExceptionCode    = DBG_PRINTEXCEPTION_C;
 365             record.ExceptionFlags   = 0;
 366             record.ExceptionRecord  = NULL;
 367             record.ExceptionAddress = RtlRaiseException;
 368             record.NumberParameters = 2;
 369             record.ExceptionInformation[1] = (ULONG_PTR)buf;
 370             record.ExceptionInformation[0] = strlen( buf ) + 1;
 371             RtlRaiseException( &record );
 372         }
 373         __EXCEPT(debug_exception_handler)
 374         {
 375         }
 376         __ENDTRY
 377     }
 378
 379     return STATUS_SUCCESS;
 380 }
 381
 382 /******************************************************************************
 383  *  RtlAcquirePebLock           [NTDLL.@]
 384  */
 385 VOID WINAPI RtlAcquirePebLock(void)
 386 {
 387     RtlEnterCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 388 }
 389
 390 /******************************************************************************
 391  *  RtlReleasePebLock           [NTDLL.@]
 392  */
 393 VOID WINAPI RtlReleasePebLock(void)
 394 {
 395     RtlLeaveCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 396 }
 397
 398 /******************************************************************************
 399  *  RtlNewSecurityObject                [NTDLL.@]
 400  */
 401 NTSTATUS WINAPI
 402 RtlNewSecurityObject( PSECURITY_DESCRIPTOR ParentDescriptor,
 403                       PSECURITY_DESCRIPTOR CreatorDescriptor,
 404                       PSECURITY_DESCRIPTOR *NewDescriptor,
 405                       BOOLEAN IsDirectoryObject,
 406                       HANDLE Token,
 407                       PGENERIC_MAPPING GenericMapping )
 408 {
 409     FIXME("(%p %p %p %d %p %p) stub!\n", ParentDescriptor, CreatorDescriptor,
 410           NewDescriptor, IsDirectoryObject, Token, GenericMapping);
 411     return STATUS_NOT_IMPLEMENTED;
 412 }
 413
 414 /******************************************************************************
 415  *  RtlDeleteSecurityObject             [NTDLL.@]
 416  */
 417 NTSTATUS WINAPI
 418 RtlDeleteSecurityObject( PSECURITY_DESCRIPTOR *ObjectDescriptor )
 419 {
 420     FIXME("(%p) stub!\n", ObjectDescriptor);
 421     return STATUS_NOT_IMPLEMENTED;
 422 }
 423
 424 /******************************************************************************
 425  *  RtlInitializeGenericTable           [NTDLL.@]
 426  */
 427 void WINAPI RtlInitializeGenericTable(RTL_GENERIC_TABLE *table, PRTL_GENERIC_COMPARE_ROUTINE compare,
 428                                       PRTL_GENERIC_ALLOCATE_ROUTINE allocate, PRTL_GENERIC_FREE_ROUTINE free,
 429                                       void *context)
 430 {
 431     FIXME("(%p, %p, %p, %p, %p) stub!\n", table, compare, allocate, free, context);
 432 }
 433
 434 /******************************************************************************
 435  *  RtlEnumerateGenericTableWithoutSplaying           [NTDLL.@]
 436  */
 437 void * WINAPI RtlEnumerateGenericTableWithoutSplaying(RTL_GENERIC_TABLE *table, void *previous)
 438 {
 439     static int warn_once;
 440
 441     if (!warn_once++)
 442         FIXME("(%p, %p) stub!\n", table, previous);
 443     return NULL;
 444 }
 445
 446 /******************************************************************************
 447  *  RtlNumberGenericTableElements           [NTDLL.@]
 448  */
 449 ULONG WINAPI RtlNumberGenericTableElements(RTL_GENERIC_TABLE *table)
 450 {
 451     FIXME("(%p) stub!\n", table);
 452     return 0;
 453 }
 454
 455 /******************************************************************************
 456  *  RtlMoveMemory   [NTDLL.@]
 457  *
 458  * Move a block of memory that may overlap.
 459  *
 460  * PARAMS
 461  *  Destination [O] End destination for block
 462  *  Source      [O] Where to start copying from
 463  *  Length      [I] Number of bytes to copy
 464  *
 465  * RETURNS
 466  *  Nothing.
 467  */
 468 #undef RtlMoveMemory
 469 VOID WINAPI RtlMoveMemory( void *Destination, const void *Source, SIZE_T Length )
 470 {
 471     memmove(Destination, Source, Length);
 472 }
 473
 474 /******************************************************************************
 475  *  RtlFillMemory   [NTDLL.@]
 476  *
 477  * Set a block of memory with a value.
 478  *
 479  * PARAMS
 480  *  Destination [O] Block to fill
 481  *  Length      [I] Number of bytes to fill
 482  *  Fill        [I] Value to set
 483  *
 484  * RETURNS
 485  *  Nothing.
 486  */
 487 #undef RtlFillMemory
 488 VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
 489 {
 490     memset(Destination, Fill, Length);
 491 }
 492
 493 /******************************************************************************
 494  *  RtlZeroMemory   [NTDLL.@]
 495  *
 496  * Set a block of memory with 0's.
 497  *
 498  * PARAMS
 499  *  Destination [O] Block to fill
 500  *  Length      [I] Number of bytes to fill
 501  *
 502  * RETURNS
 503  *  Nothing.
 504  */
 505 #undef RtlZeroMemory
 506 VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
 507 {
 508     memset(Destination, 0, Length);
 509 }
 510
 511 /******************************************************************************
 512  *  RtlCompareMemory   [NTDLL.@]
 513  *
 514  * Compare one block of memory with another
 515  *
 516  * PARAMS
 517  *  Source1 [I] Source block
 518  *  Source2 [I] Block to compare to Source1
 519  *  Length  [I] Number of bytes to compare
 520  *
 521  * RETURNS
 522  *  The length of the first byte at which Source1 and Source2 differ, or Length
 523  *  if they are the same.
 524  */
 525 SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
 526 {
 527     SIZE_T i;
 528     for(i=0; (i<Length) && (((const BYTE*)Source1)[i]==((const BYTE*)Source2)[i]); i++);
 529     return i;
 530 }
 531
 532 /******************************************************************************
 533  *  RtlCompareMemoryUlong   [NTDLL.@]
 534  *
 535  * Compare a block of memory with a value, a ULONG at a time
 536  *
 537  * PARAMS
 538  *  Source1 [I] Source block. This must be ULONG aligned
 539  *  Length  [I] Number of bytes to compare. This should be a multiple of 4
 540  *  dwVal   [I] Value to compare to
 541  *
 542  * RETURNS
 543  *  The byte position of the first byte at which Source1 is not dwVal.
 544  */
 545 SIZE_T WINAPI RtlCompareMemoryUlong(VOID *Source1, SIZE_T Length, ULONG dwVal)
 546 {
 547     SIZE_T i;
 548     for(i = 0; i < Length/sizeof(ULONG) && ((ULONG *)Source1)[i] == dwVal; i++);
 549     return i * sizeof(ULONG);
 550 }
 551
 552 /******************************************************************************
 553  *  RtlCopyMemory   [NTDLL.@]
 554  */
 555 #undef RtlCopyMemory
 556 void WINAPI RtlCopyMemory(void *dest, const void *src, SIZE_T len)
 557 {
 558     memcpy(dest, src, len);
 559 }
 560
 561 /******************************************************************************
 562  *  RtlAssert                           [NTDLL.@]
 563  *
 564  * Fail a debug assertion.
 565  *
 566  * RETURNS
 567  *  Nothing. This call does not return control to its caller.
 568  *
 569  * NOTES
 570  * Not implemented in non-debug versions.
 571  */
 572 void WINAPI RtlAssert(void *assertion, void *filename, ULONG linenumber, char *message)
 573 {
 574     FIXME("(%s, %s, %u, %s): stub\n", debugstr_a((char*)assertion), debugstr_a((char*)filename),
 575         linenumber, debugstr_a(message));
 576 }
 577
 578 /*************************************************************************
 579  * RtlFillMemoryUlong   [NTDLL.@]
 580  *
 581  * Fill memory with a 32 bit (dword) value.
 582  *
 583  * PARAMS
 584  *  lpDest  [I] Bitmap pointer
 585  *  ulCount [I] Number of dwords to write
 586  *  ulValue [I] Value to fill with
 587  *
 588  * RETURNS
 589  *  Nothing.
 590  */
 591 VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
 592 {
 593   TRACE("(%p,%d,%d)\n", lpDest, ulCount, ulValue);
 594
 595   ulCount /= sizeof(ULONG);
 596   while(ulCount--)
 597     *lpDest++ = ulValue;
 598 }
 599
 600 /*********************************************************************
 601  *                  RtlComputeCrc32   [NTDLL.@]
 602  *
 603  * Calculate the CRC32 checksum of a block of bytes
 604  *
 605  * PARAMS
 606  *  dwInitial [I] Initial CRC value
 607  *  pData     [I] Data block
 608  *  iLen      [I] Length of the byte block
 609  *
 610  * RETURNS
 611  *  The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
 612  */
 613 DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, const BYTE *pData, INT iLen)
 614 {
 615   DWORD crc = ~dwInitial;
 616
 617   TRACE("(%d,%p,%d)\n", dwInitial, pData, iLen);
 618
 619   while (iLen > 0)
 620   {
 621     crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
 622     pData++;
 623     iLen--;
 624   }
 625   return ~crc;
 626 }
 627
 628
 629 /*************************************************************************
 630  * RtlUlonglongByteSwap    [NTDLL.@]
 631  *
 632  * Swap the bytes of an unsigned long long value.
 633  *
 634  * PARAMS
 635  *  i [I] Value to swap bytes of
 636  *
 637  * RETURNS
 638  *  The value with its bytes swapped.
 639  */
 640 ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG i)
 641 {
 642   return ((ULONGLONG)RtlUlongByteSwap(i) << 32) | RtlUlongByteSwap(i>>32);
 643 }
 644
 645 /*************************************************************************
 646  * RtlUlongByteSwap    [NTDLL.@]
 647  *
 648  * Swap the bytes of an unsigned int value.
 649  *
 650  * NOTES
 651  *  ix86 version takes argument in %ecx. Other systems use the inline version.
 652  */
 653 #ifdef __i386__
 654 __ASM_GLOBAL_FUNC(NTDLL_RtlUlongByteSwap,
 655                   "movl %ecx,%eax\n\t"
 656                   "bswap %eax\n\t"
 657                   "ret")
 658 #endif
 659
 660 /*************************************************************************
 661  * RtlUshortByteSwap    [NTDLL.@]
 662  *
 663  * Swap the bytes of an unsigned short value.
 664  *
 665  * NOTES
 666  *  i386 version takes argument in %cx. Other systems use the inline version.
 667  */
 668 #ifdef __i386__
 669 __ASM_GLOBAL_FUNC(NTDLL_RtlUshortByteSwap,
 670                   "movb %ch,%al\n\t"
 671                   "movb %cl,%ah\n\t"
 672                   "ret")
 673 #endif
 674
 675
 676 /*************************************************************************
 677  * RtlUniform   [NTDLL.@]
 678  *
 679  * Generates an uniform random number
 680  *
 681  * PARAMS
 682  *  seed [O] The seed of the Random function
 683  *
 684  * RETURNS
 685  *  It returns a random number uniformly distributed over [0..MAXLONG-1].
 686  *
 687  * NOTES
 688  *  Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
 689  *  In our case the algorithm is:
 690  *
 691  *|  result = (*seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
 692  *|
 693  *|  *seed = result;
 694  *
 695  * DIFFERENCES
 696  *  The native documentation states that the random number is
 697  *  uniformly distributed over [0..MAXLONG]. In reality the native
 698  *  function and our function return a random number uniformly
 699  *  distributed over [0..MAXLONG-1].
 700  */
 701 ULONG WINAPI RtlUniform (PULONG seed)
 702 {
 703     ULONG result;
 704
 705    /*
 706     * Instead of the algorithm stated above, we use the algorithm
 707     * below, which is totally equivalent (see the tests), but does
 708     * not use a division and therefore is faster.
 709     */
 710     result = *seed * 0xffffffed + 0x7fffffc3;
 711     if (result == 0xffffffff || result == 0x7ffffffe) {
 712         result = (result + 2) & MAXLONG;
 713     } else if (result == 0x7fffffff) {
 714         result = 0;
 715     } else if ((result & 0x80000000) == 0) {
 716         result = result + (~result & 1);
 717     } else {
 718         result = (result + (result & 1)) & MAXLONG;
 719     } /* if */
 720     *seed = result;
 721     return result;
 722 }
 723
 724
 725 /*************************************************************************
 726  * RtlRandom   [NTDLL.@]
 727  *
 728  * Generates a random number
 729  *
 730  * PARAMS
 731  *  seed [O] The seed of the Random function
 732  *
 733  * RETURNS
 734  *  It returns a random number distributed over [0..MAXLONG-1].
 735  */
 736 ULONG WINAPI RtlRandom (PULONG seed)
 737 {
 738     static ULONG saved_value[128] =
 739     { /*   0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
 740       /*   8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
 741       /*  16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
 742       /*  24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
 743       /*  32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
 744       /*  40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
 745       /*  48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
 746       /*  56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
 747       /*  64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
 748       /*  72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
 749       /*  80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
 750       /*  88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
 751       /*  96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
 752       /* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
 753       /* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
 754       /* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
 755     ULONG rand;
 756     int pos;
 757     ULONG result;
 758
 759     rand = (*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 760     *seed = (rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 761     pos = *seed & 0x7f;
 762     result = saved_value[pos];
 763     saved_value[pos] = rand;
 764     return(result);
 765 }
 766
 767
 768 /*************************************************************************
 769  * RtlRandomEx   [NTDLL.@]
 770  */
 771 ULONG WINAPI RtlRandomEx( ULONG *seed )
 772 {
 773     WARN( "semi-stub: should use a different algorithm\n" );
 774     return RtlRandom( seed );
 775 }
 776
 777 /*************************************************************************
 778  * RtlAreAllAccessesGranted   [NTDLL.@]
 779  *
 780  * Check if all desired accesses are granted
 781  *
 782  * RETURNS
 783  *  TRUE: All desired accesses are granted
 784  *  FALSE: Otherwise
 785  */
 786 BOOLEAN WINAPI RtlAreAllAccessesGranted(
 787     ACCESS_MASK GrantedAccess,
 788     ACCESS_MASK DesiredAccess)
 789 {
 790     return (GrantedAccess & DesiredAccess) == DesiredAccess;
 791 }
 792
 793
 794 /*************************************************************************
 795  * RtlAreAnyAccessesGranted   [NTDLL.@]
 796  *
 797  * Check if at least one of the desired accesses is granted
 798  *
 799  * PARAMS
 800  *  GrantedAccess [I] Access mask of granted accesses
 801  *  DesiredAccess [I] Access mask of desired accesses
 802  *
 803  * RETURNS
 804  *  TRUE: At least one of the desired accesses is granted
 805  *  FALSE: Otherwise
 806  */
 807 BOOLEAN WINAPI RtlAreAnyAccessesGranted(
 808     ACCESS_MASK GrantedAccess,
 809     ACCESS_MASK DesiredAccess)
 810 {
 811     return (GrantedAccess & DesiredAccess) != 0;
 812 }
 813
 814
 815 /*************************************************************************
 816  * RtlMapGenericMask   [NTDLL.@]
 817  *
 818  * Determine the nongeneric access rights specified by an access mask
 819  *
 820  * RETURNS
 821  *  Nothing.
 822  */
 823 void WINAPI RtlMapGenericMask(
 824     PACCESS_MASK AccessMask,
 825     const GENERIC_MAPPING *GenericMapping)
 826 {
 827     if (*AccessMask & GENERIC_READ) {
 828         *AccessMask |= GenericMapping->GenericRead;
 829     } /* if */
 830
 831     if (*AccessMask & GENERIC_WRITE) {
 832         *AccessMask |= GenericMapping->GenericWrite;
 833     } /* if */
 834
 835     if (*AccessMask & GENERIC_EXECUTE) {
 836         *AccessMask |= GenericMapping->GenericExecute;
 837     } /* if */
 838
 839     if (*AccessMask & GENERIC_ALL) {
 840         *AccessMask |= GenericMapping->GenericAll;
 841     } /* if */
 842
 843     *AccessMask &= 0x0FFFFFFF;
 844 }
 845
 846
 847 /*************************************************************************
 848  * RtlCopyLuid   [NTDLL.@]
 849  *
 850  * Copy a local unique ID.
 851  *
 852  * PARAMS
 853  *  LuidDest [O] Destination for the copied Luid
 854  *  LuidSrc  [I] Source Luid to copy to LuidDest
 855  *
 856  * RETURNS
 857  *  Nothing.
 858  */
 859 void WINAPI RtlCopyLuid (PLUID LuidDest, const LUID *LuidSrc)
 860 {
 861     *LuidDest = *LuidSrc;
 862 }
 863
 864
 865 /*************************************************************************
 866  * RtlEqualLuid   [NTDLL.@]
 867  *
 868  * Compare two local unique IDs.
 869  *
 870  * PARAMS
 871  *  Luid1 [I] First Luid to compare to Luid2
 872  *  Luid2 [I] Second Luid to compare to Luid1
 873  *
 874  * RETURNS
 875  *  TRUE: The two LUIDs are equal.
 876  *  FALSE: Otherwise
 877  */
 878 BOOLEAN WINAPI RtlEqualLuid (const LUID *Luid1, const LUID *Luid2)
 879 {
 880   return (Luid1->LowPart ==  Luid2->LowPart && Luid1->HighPart == Luid2->HighPart);
 881 }
 882
 883
 884 /*************************************************************************
 885  * RtlCopyLuidAndAttributesArray   [NTDLL.@]
 886  *
 887  * Copy an array of local unique IDs and attributes.
 888  *
 889  * PARAMS
 890  *  Count [I] Number of Luid/attributes in Src
 891  *  Src   [I] Source Luid/attributes to copy
 892  *  Dest  [O] Destination for copied Luid/attributes
 893  *
 894  * RETURNS
 895  *  Nothing.
 896  *
 897  * NOTES
 898  *  Dest must be large enough to hold Src.
 899  */
 900 void WINAPI RtlCopyLuidAndAttributesArray(
 901     ULONG Count,
 902     const LUID_AND_ATTRIBUTES *Src,
 903     PLUID_AND_ATTRIBUTES Dest)
 904 {
 905     ULONG i;
 906
 907     for (i = 0; i < Count; i++) Dest[i] = Src[i];
 908 }
 909
 910 static BOOL parse_ipv4_component(const WCHAR **str, BOOL strict, ULONG *value)
 911 {
 912     int base = 10, d;
 913     WCHAR c;
 914     ULONG cur_value, prev_value = 0;
 915     BOOL success = FALSE;
 916
 917     if (**str == '.')
 918     {
 919         *str += 1;
 920         return FALSE;
 921     }
 922
 923     if ((*str)[0] == '0')
 924     {
 925         if ((*str)[1] == 'x' || (*str)[1] == 'X')
 926         {
 927             *str += 2;
 928             if (strict) return FALSE;
 929             base = 16;
 930         }
 931         else if ((*str)[1] >= '0' && (*str)[1] <= '9')
 932         {
 933             *str += 1;
 934             if (strict) return FALSE;
 935             base = 8;
 936         }
 937     }
 938
 939     for (cur_value = 0; **str; *str += 1)
 940     {
 941         c = **str;
 942         if (c >= ARRAY_SIZE(hex_table)) break;
 943         d = hex_table[c];
 944         if (d == -1 || d >= base) break;
 945         cur_value = cur_value * base + d;
 946         success = TRUE;
 947         if (cur_value < prev_value) return FALSE; /* overflow */
 948         prev_value = cur_value;
 949     }
 950
 951     if (success) *value = cur_value;
 952     return success;
 953 }
 954
 955 static NTSTATUS ipv4_string_to_address(const WCHAR *str, BOOL strict,
 956                                        const WCHAR **terminator, IN_ADDR *address, USHORT *port)
 957 {
 958     ULONG fields[4];
 959     int n = 0;
 960
 961     for (;;)
 962     {
 963         if (!parse_ipv4_component(&str, strict, &fields[n]))
 964             goto error;
 965         n++;
 966         if (*str != '.')
 967             break;
 968         if (n == 4)
 969             goto error;
 970         str++;
 971     }
 972
 973     if (strict && n < 4)
 974         goto error;
 975
 976     switch (n)
 977     {
 978         case 4:
 979             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFF || fields[3] > 0xFF)
 980                 goto error;
 981             address->S_un.S_un_b.s_b1 = fields[0];
 982             address->S_un.S_un_b.s_b2 = fields[1];
 983             address->S_un.S_un_b.s_b3 = fields[2];
 984             address->S_un.S_un_b.s_b4 = fields[3];
 985             break;
 986         case 3:
 987             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFFFF)
 988                 goto error;
 989             address->S_un.S_un_b.s_b1 = fields[0];
 990             address->S_un.S_un_b.s_b2 = fields[1];
 991             address->S_un.S_un_b.s_b3 = (fields[2] & 0xFF00) >> 8;
 992             address->S_un.S_un_b.s_b4 = (fields[2] & 0x00FF);
 993             break;
 994         case 2:
 995             if (fields[0] > 0xFF || fields[1] > 0xFFFFFF)
 996                 goto error;
 997             address->S_un.S_un_b.s_b1 = fields[0];
 998             address->S_un.S_un_b.s_b2 = (fields[1] & 0xFF0000) >> 16;
 999             address->S_un.S_un_b.s_b3 = (fields[1] & 0x00FF00) >> 8;
1000             address->S_un.S_un_b.s_b4 = (fields[1] & 0x0000FF);
1001             break;
1002         case 1:
1003             address->S_un.S_un_b.s_b1 = (fields[0] & 0xFF000000) >> 24;
1004             address->S_un.S_un_b.s_b2 = (fields[0] & 0x00FF0000) >> 16;
1005             address->S_un.S_un_b.s_b3 = (fields[0] & 0x0000FF00) >> 8;
1006             address->S_un.S_un_b.s_b4 = (fields[0] & 0x000000FF);
1007             break;
1008         default:
1009             goto error;
1010     }
1011
1012     if (terminator) *terminator = str;
1013
1014     if (*str == ':')
1015     {
1016         str++;
1017         if (!parse_ipv4_component(&str, FALSE, &fields[0]))
1018             goto error;
1019         if (!fields[0] || fields[0] > 0xFFFF || *str)
1020             goto error;
1021         if (port)
1022         {
1023             *port = htons(fields[0]);
1024             if (terminator) *terminator = str;
1025         }
1026     }
1027
1028     if (!terminator && *str)
1029         return STATUS_INVALID_PARAMETER;
1030     return STATUS_SUCCESS;
1031
1032 error:
1033     if (terminator) *terminator = str;
1034     return STATUS_INVALID_PARAMETER;
1035 }
1036
1037 /***********************************************************************
1038  * RtlIpv4StringToAddressExW [NTDLL.@]
1039  */
1040 NTSTATUS WINAPI RtlIpv4StringToAddressExW(const WCHAR *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1041 {
1042     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, address, port);
1043     if (!str || !address || !port) return STATUS_INVALID_PARAMETER;
1044     return ipv4_string_to_address(str, strict, NULL, address, port);
1045 }
1046
1047 /***********************************************************************
1048  * RtlIpv4StringToAddressW [NTDLL.@]
1049  */
1050 NTSTATUS WINAPI RtlIpv4StringToAddressW(const WCHAR *str, BOOLEAN strict, const WCHAR **terminator, IN_ADDR *address)
1051 {
1052     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, terminator, address);
1053     return ipv4_string_to_address(str, strict, terminator, address, NULL);
1054 }
1055
1056 /***********************************************************************
1057  * RtlIpv4StringToAddressExA [NTDLL.@]
1058  */
1059 NTSTATUS WINAPI RtlIpv4StringToAddressExA(const char *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1060 {
1061     WCHAR wstr[32];
1062
1063     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, address, port);
1064
1065     if (!str || !address || !port)
1066         return STATUS_INVALID_PARAMETER;
1067
1068     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1069     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1070     return ipv4_string_to_address(wstr, strict, NULL, address, port);
1071 }
1072
1073 /***********************************************************************
1074  * RtlIpv4StringToAddressA [NTDLL.@]
1075  */
1076 NTSTATUS WINAPI RtlIpv4StringToAddressA(const char *str, BOOLEAN strict, const char **terminator, IN_ADDR *address)
1077 {
1078     WCHAR wstr[32];
1079     const WCHAR *wterminator;
1080     NTSTATUS ret;
1081
1082     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, terminator, address);
1083
1084     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1085     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1086     ret = ipv4_string_to_address(wstr, strict, &wterminator, address, NULL);
1087     if (terminator) *terminator = str + (wterminator - wstr);
1088     return ret;
1089 }
1090
1091 static BOOL parse_ipv6_component(const WCHAR **str, int base, ULONG *value)
1092 {
1093     WCHAR *terminator;
1094     if (**str >= ARRAY_SIZE(hex_table) || hex_table[**str] == -1) return FALSE;
1095     *value = min(wcstoul(*str, &terminator, base), 0x7FFFFFFF);
1096     if (*terminator == '0') terminator++; /* "0x" but nothing valid after */
1097     else if (terminator == *str) return FALSE;
1098     *str = terminator;
1099     return TRUE;
1100 }
1101
1102 static NTSTATUS ipv6_string_to_address(const WCHAR *str, BOOL ex,
1103                                        const WCHAR **terminator, IN6_ADDR *address, ULONG *scope, USHORT *port)
1104 {
1105     BOOL expecting_port = FALSE, has_0x = FALSE, too_big = FALSE;
1106     int n_bytes = 0, n_ipv4_bytes = 0, gap = -1;
1107     ULONG ip_component, scope_component = 0, port_component = 0;
1108     const WCHAR *prev_str;
1109
1110     if (str[0] == '[')
1111     {
1112         if (!ex) goto error;
1113         expecting_port = TRUE;
1114         str++;
1115     }
1116
1117     if (str[0] == ':')
1118     {
1119         if (str[1] != ':') goto error;
1120         str++;
1121         /* Windows bug: a double colon at the beginning is treated as 4 bytes of zeros instead of 2 */
1122         address->u.Word[0] = 0;
1123         n_bytes = 2;
1124     }
1125
1126     for (;;)
1127     {
1128         if (!n_ipv4_bytes && *str == ':')
1129         {
1130             /* double colon */
1131             if (gap != -1) goto error;
1132             str++;
1133             prev_str = str;
1134             gap = n_bytes;
1135             if (n_bytes == 14 || !parse_ipv6_component(&str, 16, &ip_component)) break;
1136             str = prev_str;
1137         }
1138         else
1139         {
1140             prev_str = str;
1141         }
1142
1143         if (!n_ipv4_bytes && n_bytes <= (gap != -1 ? 10 : 12))
1144         {
1145             if (parse_ipv6_component(&str, 10, &ip_component) && *str == '.')
1146                 n_ipv4_bytes = 1;
1147             str = prev_str;
1148         }
1149
1150         if (n_ipv4_bytes)
1151         {
1152             /* IPv4 component */
1153             if (!parse_ipv6_component(&str, 10, &ip_component)) goto error;
1154             if (str - prev_str > 3 || ip_component > 255)
1155             {
1156                 too_big = TRUE;
1157             }
1158             else
1159             {
1160                 if (*str != '.' && (n_ipv4_bytes < 4 || (n_bytes < 15 && gap == -1))) goto error;
1161                 address->u.Byte[n_bytes] = ip_component;
1162                 n_bytes++;
1163             }
1164             if (n_ipv4_bytes == 4 || *str != '.') break;
1165             n_ipv4_bytes++;
1166         }
1167         else
1168         {
1169             /* IPv6 component */
1170             if (!parse_ipv6_component(&str, 16, &ip_component)) goto error;
1171             if (prev_str[0] == '0' && (prev_str[1] == 'x' || prev_str[1] == 'X'))
1172             {
1173                 /* Windows "feature": the last IPv6 component can start with "0x" and be longer than 4 digits */
1174                 if (terminator) *terminator = prev_str + 1; /* Windows says that the "x" is the terminator */
1175                 if (n_bytes < 14 && gap == -1) return STATUS_INVALID_PARAMETER;
1176                 address->u.Word[n_bytes/2] = htons(ip_component);
1177                 n_bytes += 2;
1178                 has_0x = TRUE;
1179                 goto fill_gap;
1180             }
1181             if (*str != ':' && n_bytes < 14 && gap == -1) goto error;
1182             if (str - prev_str > 4)
1183                 too_big = TRUE;
1184             else
1185                 address->u.Word[n_bytes/2] = htons(ip_component);
1186             n_bytes += 2;
1187             if (*str != ':' || (gap != -1 && str[1] == ':')) break;
1188         }
1189         if (n_bytes == (gap != -1 ? 14 : 16)) break;
1190         if (too_big) return STATUS_INVALID_PARAMETER;
1191         str++;
1192     }
1193
1194     if (terminator) *terminator = str;
1195     if (too_big) return STATUS_INVALID_PARAMETER;
1196
1197 fill_gap:
1198     if (gap == -1)
1199     {
1200         if (n_bytes < 16) goto error;
1201     }
1202     else
1203     {
1204         memmove(address->u.Byte + 16 - (n_bytes - gap), address->u.Byte + gap, n_bytes - gap);
1205         memset(address->u.Byte + gap, 0, 16 - n_bytes);
1206     }
1207
1208     if (ex)
1209     {
1210         if (has_0x) goto error;
1211
1212         if (*str == '%')
1213         {
1214             str++;
1215             if (!parse_ipv4_component(&str, TRUE, &scope_component)) goto error;
1216         }
1217
1218         if (expecting_port)
1219         {
1220             if (*str != ']') goto error;
1221             str++;
1222             if (*str == ':')
1223             {
1224                 str++;
1225                 if (!parse_ipv4_component(&str, FALSE, &port_component)) goto error;
1226                 if (!port_component || port_component > 0xFFFF || *str) goto error;
1227                 port_component = htons(port_component);
1228             }
1229         }
1230     }
1231
1232     if (!terminator && *str) return STATUS_INVALID_PARAMETER;
1233
1234     if (scope) *scope = scope_component;
1235     if (port) *port = port_component;
1236
1237     return STATUS_SUCCESS;
1238
1239 error:
1240     if (terminator) *terminator = str;
1241     return STATUS_INVALID_PARAMETER;
1242 }
1243
1244 /***********************************************************************
1245  * RtlIpv6StringToAddressExW [NTDLL.@]
1246  */
1247 NTSTATUS NTAPI RtlIpv6StringToAddressExW(const WCHAR *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1248 {
1249     TRACE("(%s, %p, %p, %p)\n", debugstr_w(str), address, scope, port);
1250     if (!str || !address || !scope || !port) return STATUS_INVALID_PARAMETER;
1251     return ipv6_string_to_address(str, TRUE, NULL, address, scope, port);
1252 }
1253
1254 /***********************************************************************
1255  * RtlIpv6StringToAddressW [NTDLL.@]
1256  */
1257 NTSTATUS WINAPI RtlIpv6StringToAddressW(const WCHAR *str, const WCHAR **terminator, IN6_ADDR *address)
1258 {
1259     TRACE("(%s, %p, %p)\n", debugstr_w(str), terminator, address);
1260     return ipv6_string_to_address(str, FALSE, terminator, address, NULL, NULL);
1261 }
1262
1263 /***********************************************************************
1264  * RtlIpv6StringToAddressExA [NTDLL.@]
1265  */
1266 NTSTATUS WINAPI RtlIpv6StringToAddressExA(const char *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1267 {
1268     WCHAR wstr[128];
1269
1270     TRACE("(%s, %p, %p, %p)\n", debugstr_a(str), address, scope, port);
1271
1272     if (!str || !address || !scope || !port)
1273         return STATUS_INVALID_PARAMETER;
1274
1275     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1276     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1277     return ipv6_string_to_address(wstr, TRUE, NULL, address, scope, port);
1278 }
1279
1280 /***********************************************************************
1281  * RtlIpv6StringToAddressA [NTDLL.@]
1282  */
1283 NTSTATUS WINAPI RtlIpv6StringToAddressA(const char *str, const char **terminator, IN6_ADDR *address)
1284 {
1285     WCHAR wstr[128];
1286     const WCHAR *wterminator = NULL;
1287     NTSTATUS ret;
1288
1289     TRACE("(%s, %p, %p)\n", debugstr_a(str), terminator, address);
1290
1291     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1292     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1293     ret = ipv6_string_to_address(wstr, FALSE, &wterminator, address, NULL, NULL);
1294     if (terminator && wterminator) *terminator = str + (wterminator - wstr);
1295     return ret;
1296 }
1297
1298 /***********************************************************************
1299  * RtlIpv4AddressToStringExW [NTDLL.@]
1300  *
1301  * Convert the given ipv4 address and optional the port to a string
1302  *
1303  * PARAMS
1304  *  pin     [I]  PTR to the ip address to convert (network byte order)
1305  *  port    [I]  optional port to convert (network byte order)
1306  *  buffer  [O]  destination buffer for the result
1307  *  psize   [IO] PTR to available/used size of the destination buffer
1308  *
1309  * RETURNS
1310  *  Success: STATUS_SUCCESS
1311  *  Failure: STATUS_INVALID_PARAMETER
1312  *
1313  */
1314 NTSTATUS WINAPI RtlIpv4AddressToStringExW(const IN_ADDR *pin, USHORT port, LPWSTR buffer, PULONG psize)
1315 {
1316     WCHAR tmp_ip[32];
1317     ULONG needed;
1318
1319     if (!pin || !buffer || !psize)
1320         return STATUS_INVALID_PARAMETER;
1321
1322     TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1323
1324     needed = swprintf(tmp_ip, ARRAY_SIZE(tmp_ip), L"%u.%u.%u.%u",
1325                       pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1326                       pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1327
1328     if (port) needed += swprintf(tmp_ip + needed, ARRAY_SIZE(tmp_ip) - needed, L":%u", ntohs(port));
1329
1330     if (*psize > needed) {
1331         *psize = needed + 1;
1332         wcscpy(buffer, tmp_ip);
1333         return STATUS_SUCCESS;
1334     }
1335
1336     *psize = needed + 1;
1337     return STATUS_INVALID_PARAMETER;
1338 }
1339
1340 /***********************************************************************
1341  * RtlIpv4AddressToStringExA [NTDLL.@]
1342  *
1343  * Convert the given ipv4 address and optional the port to a string
1344  *
1345  * See RtlIpv4AddressToStringExW
1346  */
1347 NTSTATUS WINAPI RtlIpv4AddressToStringExA(const IN_ADDR *pin, USHORT port, LPSTR buffer, PULONG psize)
1348 {
1349     CHAR tmp_ip[32];
1350     ULONG needed;
1351
1352     if (!pin || !buffer || !psize)
1353         return STATUS_INVALID_PARAMETER;
1354
1355     TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1356
1357     needed = sprintf(tmp_ip, "%u.%u.%u.%u",
1358                      pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1359                      pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1360
1361     if (port) needed += sprintf(tmp_ip + needed, ":%u", ntohs(port));
1362
1363     if (*psize > needed) {
1364         *psize = needed + 1;
1365         strcpy(buffer, tmp_ip);
1366         return STATUS_SUCCESS;
1367     }
1368
1369     *psize = needed + 1;
1370     return STATUS_INVALID_PARAMETER;
1371 }
1372
1373 /***********************************************************************
1374  * RtlIpv4AddressToStringW [NTDLL.@]
1375  *
1376  * Convert the given ipv4 address to a string
1377  *
1378  * PARAMS
1379  *  pin     [I]  PTR to the ip address to convert (network byte order)
1380  *  buffer  [O]  destination buffer for the result (at least 16 character)
1381  *
1382  * RETURNS
1383  *  PTR to the 0 character at the end of the converted string
1384  *
1385  */
1386 WCHAR * WINAPI RtlIpv4AddressToStringW(const IN_ADDR *pin, LPWSTR buffer)
1387 {
1388     ULONG size = 16;
1389
1390     if (RtlIpv4AddressToStringExW(pin, 0, buffer, &size)) size = 0;
1391     return buffer + size - 1;
1392 }
1393
1394 /***********************************************************************
1395  * RtlIpv4AddressToStringA [NTDLL.@]
1396  *
1397  * Convert the given ipv4 address to a string
1398  *
1399  * See RtlIpv4AddressToStringW
1400  */
1401 CHAR * WINAPI RtlIpv4AddressToStringA(const IN_ADDR *pin, LPSTR buffer)
1402 {
1403     ULONG size = 16;
1404
1405     if (RtlIpv4AddressToStringExA(pin, 0, buffer, &size)) size = 0;
1406     return buffer + size - 1;
1407 }
1408
1409 static BOOL is_ipv4_in_ipv6(const IN6_ADDR *address)
1410 {
1411     if (address->s6_words[5] == htons(0x5efe) && (address->s6_words[4] & ~htons(0x200)) == 0)
1412         return TRUE;
1413     if (*(UINT64 *)address != 0)
1414         return FALSE;
1415     if (address->s6_words[4] != 0 && address->s6_words[4] != 0xffff)
1416         return FALSE;
1417     if (address->s6_words[4] == 0 && address->s6_words[5] != 0 && address->s6_words[5] != 0xffff)
1418         return FALSE;
1419     if (address->s6_words[4] == 0xffff && address->s6_words[5] != 0)
1420         return FALSE;
1421     if (address->s6_words[6] == 0)
1422         return FALSE;
1423     return TRUE;
1424 }
1425
1426 /***********************************************************************
1427  * RtlIpv6AddressToStringExA [NTDLL.@]
1428  */
1429 NTSTATUS WINAPI RtlIpv6AddressToStringExA(const IN6_ADDR *address, ULONG scope, USHORT port, char *str, ULONG *size)
1430 {
1431     char buffer[64], *p = buffer;
1432     int i, len, gap = -1, gap_len = 1, ipv6_end = 8;
1433     ULONG needed;
1434     NTSTATUS ret;
1435
1436     TRACE("(%p %u %u %p %p)\n", address, scope, port, str, size);
1437
1438     if (!address || !str || !size)
1439         return STATUS_INVALID_PARAMETER;
1440
1441     if (is_ipv4_in_ipv6(address))
1442         ipv6_end = 6;
1443
1444     for (i = 0; i < ipv6_end; i++)
1445     {
1446         len = 0;
1447         while (!address->s6_words[i] && i < ipv6_end)
1448         {
1449             i++;
1450             len++;
1451         }
1452         if (len > gap_len)
1453         {
1454             gap = i - len;
1455             gap_len = len;
1456         }
1457     }
1458
1459     if (port) p += sprintf(p, "[");
1460
1461     i = 0;
1462     while (i < ipv6_end)
1463     {
1464         if (i == gap)
1465         {
1466             p += sprintf(p, ":");
1467             i += gap_len;
1468             if (i == ipv6_end) p += sprintf(p, ":");
1469             continue;
1470         }
1471         if (i > 0) p += sprintf(p, ":");
1472         p += sprintf(p, "%x", ntohs(address->s6_words[i]));
1473         i++;
1474     }
1475
1476     if (ipv6_end == 6)
1477     {
1478         if (p[-1] != ':') p += sprintf(p, ":");
1479         p = RtlIpv4AddressToStringA((IN_ADDR *)(address->s6_words + 6), p);
1480     }
1481
1482     if (scope) p += sprintf(p, "%%%u", scope);
1483
1484     if (port) p += sprintf(p, "]:%u", ntohs(port));
1485
1486     needed = p - buffer + 1;
1487
1488     if (*size >= needed)
1489     {
1490         strcpy(str, buffer);
1491         ret = STATUS_SUCCESS;
1492     }
1493     else
1494     {
1495         ret = STATUS_INVALID_PARAMETER;
1496     }
1497
1498     *size = needed;
1499     return ret;
1500 }
1501
1502 /***********************************************************************
1503  * RtlIpv6AddressToStringA [NTDLL.@]
1504  */
1505 char * WINAPI RtlIpv6AddressToStringA(const IN6_ADDR *address, char *str)
1506 {
1507     ULONG size = 46;
1508     if (!address || !str) return str - 1;
1509     str[45] = 0; /* this byte is set even though the string is always shorter */
1510     RtlIpv6AddressToStringExA(address, 0, 0, str, &size);
1511     return str + size - 1;
1512 }
1513
1514 /***********************************************************************
1515  * RtlIpv6AddressToStringExW [NTDLL.@]
1516  */
1517 NTSTATUS WINAPI RtlIpv6AddressToStringExW(const IN6_ADDR *address, ULONG scope, USHORT port, WCHAR *str, ULONG *size)
1518 {
1519     char cstr[64];
1520     NTSTATUS ret = RtlIpv6AddressToStringExA(address, scope, port, cstr, size);
1521     if (ret == STATUS_SUCCESS) RtlMultiByteToUnicodeN(str, *size * sizeof(WCHAR), NULL, cstr, *size);
1522     return ret;
1523 }
1524
1525 /***********************************************************************
1526  * RtlIpv6AddressToStringW [NTDLL.@]
1527  */
1528 WCHAR * WINAPI RtlIpv6AddressToStringW(const IN6_ADDR *address, WCHAR *str)
1529 {
1530     ULONG size = 46;
1531     if (!address || !str) return str;
1532     str[45] = 0; /* this word is set even though the string is always shorter */
1533     if (RtlIpv6AddressToStringExW(address, 0, 0, str, &size) != STATUS_SUCCESS)
1534         return str;
1535     return str + size - 1;
1536 }
1537
1538 /***********************************************************************
1539  * get_pointer_obfuscator (internal)
1540  */
1541 static DWORD_PTR get_pointer_obfuscator( void )
1542 {
1543     static DWORD_PTR pointer_obfuscator;
1544
1545     if (!pointer_obfuscator)
1546     {
1547         ULONG seed = NtGetTickCount();
1548         ULONG_PTR rand;
1549
1550         /* generate a random value for the obfuscator */
1551         rand = RtlUniform( &seed );
1552
1553         /* handle 64bit pointers */
1554         rand ^= (ULONG_PTR)RtlUniform( &seed ) << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1555
1556         /* set the high bits so dereferencing obfuscated pointers will (usually) crash */
1557         rand |= (ULONG_PTR)0xc0000000 << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1558
1559         InterlockedCompareExchangePointer( (void**) &pointer_obfuscator, (void*) rand, NULL );
1560     }
1561
1562     return pointer_obfuscator;
1563 }
1564
1565 /*************************************************************************
1566  * RtlEncodePointer   [NTDLL.@]
1567  */
1568 PVOID WINAPI RtlEncodePointer( PVOID ptr )
1569 {
1570     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1571     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1572 }
1573
1574 PVOID WINAPI RtlDecodePointer( PVOID ptr )
1575 {
1576     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1577     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1578 }
1579
1580 /*************************************************************************
1581  * RtlInitializeSListHead   [NTDLL.@]
1582  */
1583 VOID WINAPI RtlInitializeSListHead(PSLIST_HEADER list)
1584 {
1585 #ifdef _WIN64
1586     list->s.Alignment = list->s.Region = 0;
1587     list->Header16.HeaderType = 1;  /* we use the 16-byte header */
1588 #else
1589     list->Alignment = 0;
1590 #endif
1591 }
1592
1593 /*************************************************************************
1594  * RtlQueryDepthSList   [NTDLL.@]
1595  */
1596 WORD WINAPI RtlQueryDepthSList(PSLIST_HEADER list)
1597 {
1598 #ifdef _WIN64
1599     return list->Header16.Depth;
1600 #else
1601     return list->s.Depth;
1602 #endif
1603 }
1604
1605 /*************************************************************************
1606  * RtlFirstEntrySList   [NTDLL.@]
1607  */
1608 PSLIST_ENTRY WINAPI RtlFirstEntrySList(const SLIST_HEADER* list)
1609 {
1610 #ifdef _WIN64
1611     return (SLIST_ENTRY *)((ULONG_PTR)list->Header16.NextEntry << 4);
1612 #else
1613     return list->s.Next.Next;
1614 #endif
1615 }
1616
1617 /*************************************************************************
1618  * RtlInterlockedFlushSList   [NTDLL.@]
1619  */
1620 PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
1621 {
1622     SLIST_HEADER old, new;
1623
1624 #ifdef _WIN64
1625     if (!list->Header16.NextEntry) return NULL;
1626     new.s.Alignment = new.s.Region = 0;
1627     new.Header16.HeaderType = 1;  /* we use the 16-byte header */
1628     do
1629     {
1630         old = *list;
1631         new.Header16.Sequence = old.Header16.Sequence + 1;
1632     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1633     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1634 #else
1635     if (!list->s.Next.Next) return NULL;
1636     new.Alignment = 0;
1637     do
1638     {
1639         old = *list;
1640         new.s.Sequence = old.s.Sequence + 1;
1641     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1642                                           old.Alignment) != old.Alignment);
1643     return old.s.Next.Next;
1644 #endif
1645 }
1646
1647 /*************************************************************************
1648  * RtlInterlockedPushEntrySList   [NTDLL.@]
1649  */
1650 PSLIST_ENTRY WINAPI RtlInterlockedPushEntrySList(PSLIST_HEADER list, PSLIST_ENTRY entry)
1651 {
1652     SLIST_HEADER old, new;
1653
1654 #ifdef _WIN64
1655     new.Header16.NextEntry = (ULONG_PTR)entry >> 4;
1656     do
1657     {
1658         old = *list;
1659         entry->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1660         new.Header16.Depth = old.Header16.Depth + 1;
1661         new.Header16.Sequence = old.Header16.Sequence + 1;
1662     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1663     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1664 #else
1665     new.s.Next.Next = entry;
1666     do
1667     {
1668         old = *list;
1669         entry->Next = old.s.Next.Next;
1670         new.s.Depth = old.s.Depth + 1;
1671         new.s.Sequence = old.s.Sequence + 1;
1672     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1673                                           old.Alignment) != old.Alignment);
1674     return old.s.Next.Next;
1675 #endif
1676 }
1677
1678 /*************************************************************************
1679  * RtlInterlockedPopEntrySList   [NTDLL.@]
1680  */
1681 PSLIST_ENTRY WINAPI RtlInterlockedPopEntrySList(PSLIST_HEADER list)
1682 {
1683     SLIST_HEADER old, new;
1684     PSLIST_ENTRY entry;
1685
1686 #ifdef _WIN64
1687     do
1688     {
1689         old = *list;
1690         if (!(entry = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4))) return NULL;
1691         /* entry could be deleted by another thread */
1692         __TRY
1693         {
1694             new.Header16.NextEntry = (ULONG_PTR)entry->Next >> 4;
1695             new.Header16.Depth = old.Header16.Depth - 1;
1696             new.Header16.Sequence = old.Header16.Sequence + 1;
1697         }
1698         __EXCEPT_PAGE_FAULT
1699         {
1700         }
1701         __ENDTRY
1702     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1703 #else
1704     do
1705     {
1706         old = *list;
1707         if (!(entry = old.s.Next.Next)) return NULL;
1708         /* entry could be deleted by another thread */
1709         __TRY
1710         {
1711             new.s.Next.Next = entry->Next;
1712             new.s.Depth = old.s.Depth - 1;
1713             new.s.Sequence = old.s.Sequence + 1;
1714         }
1715         __EXCEPT_PAGE_FAULT
1716         {
1717         }
1718         __ENDTRY
1719     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1720                                           old.Alignment) != old.Alignment);
1721 #endif
1722     return entry;
1723 }
1724
1725 /*************************************************************************
1726  * RtlInterlockedPushListSListEx   [NTDLL.@]
1727  */
1728 PSLIST_ENTRY WINAPI RtlInterlockedPushListSListEx(PSLIST_HEADER list, PSLIST_ENTRY first,
1729                                                   PSLIST_ENTRY last, ULONG count)
1730 {
1731     SLIST_HEADER old, new;
1732
1733 #ifdef _WIN64
1734     new.Header16.NextEntry = (ULONG_PTR)first >> 4;
1735     do
1736     {
1737         old = *list;
1738         new.Header16.Depth = old.Header16.Depth + count;
1739         new.Header16.Sequence = old.Header16.Sequence + 1;
1740         last->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1741     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1742     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1743 #else
1744     new.s.Next.Next = first;
1745     do
1746     {
1747         old = *list;
1748         new.s.Depth = old.s.Depth + count;
1749         new.s.Sequence = old.s.Sequence + 1;
1750         last->Next = old.s.Next.Next;
1751     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1752                                           old.Alignment) != old.Alignment);
1753     return old.s.Next.Next;
1754 #endif
1755 }
1756
1757 /*************************************************************************
1758  * RtlInterlockedPushListSList   [NTDLL.@]
1759  */
1760 DEFINE_FASTCALL_WRAPPER(RtlInterlockedPushListSList, 16)
1761 PSLIST_ENTRY FASTCALL RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
1762                                                   PSLIST_ENTRY last, ULONG count)
1763 {
1764     return RtlInterlockedPushListSListEx(list, first, last, count);
1765 }
1766
1767 /******************************************************************************
1768  *  RtlGetCompressionWorkSpaceSize              [NTDLL.@]
1769  */
1770 NTSTATUS WINAPI RtlGetCompressionWorkSpaceSize(USHORT format, PULONG compress_workspace,
1771                                                PULONG decompress_workspace)
1772 {
1773     FIXME("0x%04x, %p, %p: semi-stub\n", format, compress_workspace, decompress_workspace);
1774
1775     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
1776     {
1777         case COMPRESSION_FORMAT_LZNT1:
1778             if (compress_workspace)
1779             {
1780                 /* FIXME: The current implementation of RtlCompressBuffer does not use a
1781                  * workspace buffer, but Windows applications might expect a nonzero value. */
1782                 *compress_workspace = 16;
1783             }
1784             if (decompress_workspace)
1785                 *decompress_workspace = 0x1000;
1786             return STATUS_SUCCESS;
1787
1788         case COMPRESSION_FORMAT_NONE:
1789         case COMPRESSION_FORMAT_DEFAULT:
1790             return STATUS_INVALID_PARAMETER;
1791
1792         default:
1793             FIXME("format %u not implemented\n", format);
1794             return STATUS_UNSUPPORTED_COMPRESSION;
1795     }
1796 }
1797
1798 /* compress data using LZNT1, currently only a stub */
1799 static NTSTATUS lznt1_compress(UCHAR *src, ULONG src_size, UCHAR *dst, ULONG dst_size,
1800                                ULONG chunk_size, ULONG *final_size, UCHAR *workspace)
1801 {
1802     UCHAR *src_cur = src, *src_end = src + src_size;
1803     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1804     ULONG block_size;
1805
1806     while (src_cur < src_end)
1807     {
1808         /* determine size of current chunk */
1809         block_size = min(0x1000, src_end - src_cur);
1810         if (dst_cur + sizeof(WORD) + block_size > dst_end)
1811             return STATUS_BUFFER_TOO_SMALL;
1812
1813         /* write (uncompressed) chunk header */
1814         *(WORD *)dst_cur = 0x3000 | (block_size - 1);
1815         dst_cur += sizeof(WORD);
1816
1817         /* write chunk content */
1818         memcpy(dst_cur, src_cur, block_size);
1819         dst_cur += block_size;
1820         src_cur += block_size;
1821     }
1822
1823     if (final_size)
1824         *final_size = dst_cur - dst;
1825
1826     return STATUS_SUCCESS;
1827 }
1828
1829 /******************************************************************************
1830  *  RtlCompressBuffer           [NTDLL.@]
1831  */
1832 NTSTATUS WINAPI RtlCompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
1833                                   PUCHAR compressed, ULONG compressed_size, ULONG chunk_size,
1834                                   PULONG final_size, PVOID workspace)
1835 {
1836     FIXME("0x%04x, %p, %u, %p, %u, %u, %p, %p: semi-stub\n", format, uncompressed,
1837           uncompressed_size, compressed, compressed_size, chunk_size, final_size, workspace);
1838
1839     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
1840     {
1841         case COMPRESSION_FORMAT_LZNT1:
1842             return lznt1_compress(uncompressed, uncompressed_size, compressed,
1843                                   compressed_size, chunk_size, final_size, workspace);
1844
1845         case COMPRESSION_FORMAT_NONE:
1846         case COMPRESSION_FORMAT_DEFAULT:
1847             return STATUS_INVALID_PARAMETER;
1848
1849         default:
1850             FIXME("format %u not implemented\n", format);
1851             return STATUS_UNSUPPORTED_COMPRESSION;
1852     }
1853 }
1854
1855 /* decompress a single LZNT1 chunk */
1856 static UCHAR *lznt1_decompress_chunk(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size)
1857 {
1858     UCHAR *src_cur = src, *src_end = src + src_size;
1859     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1860     ULONG displacement_bits, length_bits;
1861     ULONG code_displacement, code_length;
1862     WORD flags, code;
1863
1864     while (src_cur < src_end && dst_cur < dst_end)
1865     {
1866         flags = 0x8000 | *src_cur++;
1867         while ((flags & 0xff00) && src_cur < src_end)
1868         {
1869             if (flags & 1)
1870             {
1871                 /* backwards reference */
1872                 if (src_cur + sizeof(WORD) > src_end)
1873                     return NULL;
1874
1875                 code = *(WORD *)src_cur;
1876                 src_cur += sizeof(WORD);
1877
1878                 /* find length / displacement bits */
1879                 for (displacement_bits = 12; displacement_bits > 4; displacement_bits--)
1880                     if ((1 << (displacement_bits - 1)) < dst_cur - dst) break;
1881
1882                 length_bits       = 16 - displacement_bits;
1883                 code_length       = (code & ((1 << length_bits) - 1)) + 3;
1884                 code_displacement = (code >> length_bits) + 1;
1885
1886                 if (dst_cur < dst + code_displacement)
1887                     return NULL;
1888
1889                 /* copy bytes of chunk - we can't use memcpy() since source and dest can
1890                  * be overlapping, and the same bytes can be repeated over and over again */
1891                 while (code_length--)
1892                 {
1893                     if (dst_cur >= dst_end) return dst_cur;
1894                     *dst_cur = *(dst_cur - code_displacement);
1895                     dst_cur++;
1896                 }
1897             }
1898             else
1899             {
1900                 /* uncompressed data */
1901                 if (dst_cur >= dst_end) return dst_cur;
1902                 *dst_cur++ = *src_cur++;
1903             }
1904             flags >>= 1;
1905         }
1906     }
1907
1908     return dst_cur;
1909 }
1910
1911 /* decompress data encoded with LZNT1 */
1912 static NTSTATUS lznt1_decompress(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size,
1913                                  ULONG offset, ULONG *final_size, UCHAR *workspace)
1914 {
1915     UCHAR *src_cur = src, *src_end = src + src_size;
1916     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1917     ULONG chunk_size, block_size;
1918     WORD chunk_header;
1919     UCHAR *ptr;
1920
1921     if (src_cur + sizeof(WORD) > src_end)
1922         return STATUS_BAD_COMPRESSION_BUFFER;
1923
1924     /* skip over chunks with a distance >= 0x1000 to the destination offset */
1925     while (offset >= 0x1000 && 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         src_cur += chunk_size;
1936         offset  -= 0x1000;
1937     }
1938
1939     /* handle partially included chunk */
1940     if (offset && src_cur + sizeof(WORD) <= src_end)
1941     {
1942         chunk_header = *(WORD *)src_cur;
1943         src_cur += sizeof(WORD);
1944         if (!chunk_header) goto out;
1945         chunk_size = (chunk_header & 0xfff) + 1;
1946
1947         if (src_cur + chunk_size > src_end)
1948             return STATUS_BAD_COMPRESSION_BUFFER;
1949
1950         if (dst_cur >= dst_end)
1951             goto out;
1952
1953         if (chunk_header & 0x8000)
1954         {
1955             /* compressed chunk */
1956             if (!workspace) return STATUS_ACCESS_VIOLATION;
1957             ptr = lznt1_decompress_chunk(workspace, 0x1000, src_cur, chunk_size);
1958             if (!ptr) return STATUS_BAD_COMPRESSION_BUFFER;
1959             if (ptr - workspace > offset)
1960             {
1961                 block_size = min((ptr - workspace) - offset, dst_end - dst_cur);
1962                 memcpy(dst_cur, workspace + offset, block_size);
1963                 dst_cur += block_size;
1964             }
1965         }
1966         else
1967         {
1968             /* uncompressed chunk */
1969             if (chunk_size > offset)
1970             {
1971                 block_size = min(chunk_size - offset, dst_end - dst_cur);
1972                 memcpy(dst_cur, src_cur + offset, block_size);
1973                 dst_cur += block_size;
1974             }
1975         }
1976
1977         src_cur += chunk_size;
1978     }
1979
1980     /* handle remaining chunks */
1981     while (src_cur + sizeof(WORD) <= src_end)
1982     {
1983         chunk_header = *(WORD *)src_cur;
1984         src_cur += sizeof(WORD);
1985         if (!chunk_header) goto out;
1986         chunk_size = (chunk_header & 0xfff) + 1;
1987
1988         if (src_cur + chunk_size > src_end)
1989             return STATUS_BAD_COMPRESSION_BUFFER;
1990
1991         /* fill space with padding when the previous chunk was decompressed
1992          * to less than 4096 bytes. no padding is needed for the last chunk
1993          * or when the next chunk is truncated */
1994         block_size = ((dst_cur - dst) + offset) & 0xfff;
1995         if (block_size)
1996         {
1997             block_size = 0x1000 - block_size;
1998             if (dst_cur + block_size >= dst_end)
1999                 goto out;
2000             memset(dst_cur, 0, block_size);
2001             dst_cur += block_size;
2002         }
2003
2004         if (dst_cur >= dst_end)
2005             goto out;
2006
2007         if (chunk_header & 0x8000)
2008         {
2009             /* compressed chunk */
2010             dst_cur = lznt1_decompress_chunk(dst_cur, dst_end - dst_cur, src_cur, chunk_size);
2011             if (!dst_cur) return STATUS_BAD_COMPRESSION_BUFFER;
2012         }
2013         else
2014         {
2015             /* uncompressed chunk */
2016             block_size = min(chunk_size, dst_end - dst_cur);
2017             memcpy(dst_cur, src_cur, block_size);
2018             dst_cur += block_size;
2019         }
2020
2021         src_cur += chunk_size;
2022     }
2023
2024 out:
2025     if (final_size)
2026         *final_size = dst_cur - dst;
2027
2028     return STATUS_SUCCESS;
2029
2030 }
2031
2032 /******************************************************************************
2033  *  RtlDecompressFragment       [NTDLL.@]
2034  */
2035 NTSTATUS WINAPI RtlDecompressFragment(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2036                                PUCHAR compressed, ULONG compressed_size, ULONG offset,
2037                                PULONG final_size, PVOID workspace)
2038 {
2039     TRACE("0x%04x, %p, %u, %p, %u, %u, %p, %p\n", format, uncompressed,
2040           uncompressed_size, compressed, compressed_size, offset, final_size, workspace);
2041
2042     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
2043     {
2044         case COMPRESSION_FORMAT_LZNT1:
2045             return lznt1_decompress(uncompressed, uncompressed_size, compressed,
2046                                     compressed_size, offset, final_size, workspace);
2047
2048         case COMPRESSION_FORMAT_NONE:
2049         case COMPRESSION_FORMAT_DEFAULT:
2050             return STATUS_INVALID_PARAMETER;
2051
2052         default:
2053             FIXME("format %u not implemented\n", format);
2054             return STATUS_UNSUPPORTED_COMPRESSION;
2055     }
2056 }
2057
2058
2059 /******************************************************************************
2060  *  RtlDecompressBuffer         [NTDLL.@]
2061  */
2062 NTSTATUS WINAPI RtlDecompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2063                                     PUCHAR compressed, ULONG compressed_size, PULONG final_size)
2064 {
2065     TRACE("0x%04x, %p, %u, %p, %u, %p\n", format, uncompressed,
2066         uncompressed_size, compressed, compressed_size, final_size);
2067
2068     return RtlDecompressFragment(format, uncompressed, uncompressed_size,
2069                                  compressed, compressed_size, 0, final_size, NULL);
2070 }
2071
2072 /***********************************************************************
2073  *  RtlSetThreadErrorMode       [NTDLL.@]
2074  *
2075  * Set the thread local error mode.
2076  *
2077  * PARAMS
2078  *  mode    [I] The new error mode
2079  *  oldmode [O] Destination of the old error mode (may be NULL)
2080  *
2081  * RETURNS
2082  *  Success: STATUS_SUCCESS
2083  *  Failure: STATUS_INVALID_PARAMETER_1
2084  */
2085 NTSTATUS WINAPI RtlSetThreadErrorMode( DWORD mode, LPDWORD oldmode )
2086 {
2087     if (mode & ~0x70)
2088         return STATUS_INVALID_PARAMETER_1;
2089
2090     if (oldmode)
2091         *oldmode = NtCurrentTeb()->HardErrorDisabled;
2092
2093     NtCurrentTeb()->HardErrorDisabled = mode;
2094     return STATUS_SUCCESS;
2095 }
2096
2097 /***********************************************************************
2098  *  RtlGetThreadErrorMode       [NTDLL.@]
2099  *
2100  * Get the thread local error mode.
2101  *
2102  * PARAMS
2103  *  None.
2104  *
2105  * RETURNS
2106  *  The current thread local error mode.
2107  */
2108 DWORD WINAPI RtlGetThreadErrorMode( void )
2109 {
2110     return NtCurrentTeb()->HardErrorDisabled;
2111 }
2112
2113 /******************************************************************************
2114  * RtlGetCurrentTransaction [NTDLL.@]
2115  */
2116 HANDLE WINAPI RtlGetCurrentTransaction(void)
2117 {
2118     FIXME("() :stub\n");
2119     return NULL;
2120 }
2121
2122 /******************************************************************************
2123  * RtlSetCurrentTransaction [NTDLL.@]
2124  */
2125 BOOL WINAPI RtlSetCurrentTransaction(HANDLE new_transaction)
2126 {
2127     FIXME("(%p) :stub\n", new_transaction);
2128     return FALSE;
2129 }
2130
2131 /**********************************************************************
2132  *           RtlGetCurrentProcessorNumberEx [NTDLL.@]
2133  */
2134 void WINAPI RtlGetCurrentProcessorNumberEx(PROCESSOR_NUMBER *processor)
2135 {
2136     FIXME("(%p) :semi-stub\n", processor);
2137     processor->Group = 0;
2138     processor->Number = NtGetCurrentProcessorNumber();
2139     processor->Reserved = 0;
2140 }
2141
2142 /***********************************************************************
2143  *           RtlInitializeGenericTableAvl  (NTDLL.@)
2144  */
2145 void WINAPI RtlInitializeGenericTableAvl(PRTL_AVL_TABLE table, PRTL_AVL_COMPARE_ROUTINE compare,
2146                                          PRTL_AVL_ALLOCATE_ROUTINE allocate, PRTL_AVL_FREE_ROUTINE free, void *context)
2147 {
2148     FIXME("%p %p %p %p %p: stub\n", table, compare, allocate, free, context);
2149 }
2150
2151 /***********************************************************************
2152  *           RtlInsertElementGenericTableAvl  (NTDLL.@)
2153  */
2154 void WINAPI RtlInsertElementGenericTableAvl(PRTL_AVL_TABLE table, void *buffer, ULONG size, BOOL *element)
2155 {
2156     FIXME("%p %p %u %p: stub\n", table, buffer, size, element);
2157 }
2158
2159 /*********************************************************************
2160  *           RtlQueryPackageIdentity [NTDLL.@]
2161  */
2162 NTSTATUS WINAPI RtlQueryPackageIdentity(HANDLE token, WCHAR *fullname, SIZE_T *fullname_size,
2163                                         WCHAR *appid, SIZE_T *appid_size, BOOLEAN *packaged)
2164 {
2165     FIXME("(%p, %p, %p, %p, %p, %p): stub\n", token, fullname, fullname_size, appid, appid_size, packaged);
2166     return STATUS_NOT_FOUND;
2167 }