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 #include "ddk/ntifs.h"
  41
  42 WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
  43 WINE_DECLARE_DEBUG_CHANNEL(debugstr);
  44
  45 /* CRC polynomial 0xedb88320 */
  46 static const DWORD CRC_table[256] =
  47 {
  48     0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
  49     0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
  50     0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
  51     0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
  52     0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
  53     0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
  54     0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
  55     0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
  56     0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
  57     0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
  58     0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
  59     0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
  60     0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
  61     0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
  62     0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
  63     0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
  64     0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
  65     0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
  66     0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
  67     0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
  68     0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
  69     0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
  70     0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
  71     0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
  72     0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
  73     0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
  74     0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
  75     0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
  76     0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
  77     0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
  78     0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
  79     0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
  80     0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
  81     0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
  82     0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
  83     0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
  84     0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
  85     0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
  86     0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
  87     0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
  88     0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
  89     0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
  90     0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
  91 };
  92
  93 static const int hex_table[] = {
  94     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0F */
  95     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1F */
  96     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2F */
  97      0,  1,  2,  3,  4,  5,  6,  7,  8,  9, -1, -1, -1, -1, -1, -1, /* 0x30-0x3F */
  98     -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4F */
  99     -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5F */
 100     -1, 10, 11, 12, 13, 14, 15                                      /* 0x60-0x66 */
 101 };
 102
 103 /*
 104  *      resource functions
 105  */
 106
 107 /***********************************************************************
 108  *           RtlInitializeResource      (NTDLL.@)
 109  *
 110  * xxxResource() functions implement multiple-reader-single-writer lock.
 111  * The code is based on information published in WDJ January 1999 issue.
 112  */
 113 void WINAPI RtlInitializeResource(LPRTL_RWLOCK rwl)
 114 {
 115     if( rwl )
 116     {
 117         rwl->iNumberActive = 0;
 118         rwl->uExclusiveWaiters = 0;
 119         rwl->uSharedWaiters = 0;
 120         rwl->hOwningThreadId = 0;
 121         rwl->dwTimeoutBoost = 0; /* no info on this one, default value is 0 */
 122         RtlInitializeCriticalSection( &rwl->rtlCS );
 123         rwl->rtlCS.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": RTL_RWLOCK.rtlCS");
 124         NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 125         NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
 126     }
 127 }
 128
 129
 130 /***********************************************************************
 131  *           RtlDeleteResource          (NTDLL.@)
 132  */
 133 void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
 134 {
 135     if( rwl )
 136     {
 137         RtlEnterCriticalSection( &rwl->rtlCS );
 138         if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
 139             ERR("Deleting active MRSW lock (%p), expect failure\n", rwl );
 140         rwl->hOwningThreadId = 0;
 141         rwl->uExclusiveWaiters = rwl->uSharedWaiters = 0;
 142         rwl->iNumberActive = 0;
 143         NtClose( rwl->hExclusiveReleaseSemaphore );
 144         NtClose( rwl->hSharedReleaseSemaphore );
 145         RtlLeaveCriticalSection( &rwl->rtlCS );
 146         rwl->rtlCS.DebugInfo->Spare[0] = 0;
 147         RtlDeleteCriticalSection( &rwl->rtlCS );
 148     }
 149 }
 150
 151
 152 /***********************************************************************
 153  *          RtlAcquireResourceExclusive (NTDLL.@)
 154  */
 155 BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl, BYTE fWait)
 156 {
 157     BYTE retVal = 0;
 158     if( !rwl ) return 0;
 159
 160 start:
 161     RtlEnterCriticalSection( &rwl->rtlCS );
 162     if( rwl->iNumberActive == 0 ) /* lock is free */
 163     {
 164         rwl->iNumberActive = -1;
 165         retVal = 1;
 166     }
 167     else if( rwl->iNumberActive < 0 ) /* exclusive lock in progress */
 168     {
 169          if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 170          {
 171              retVal = 1;
 172              rwl->iNumberActive--;
 173              goto done;
 174          }
 175 wait:
 176          if( fWait )
 177          {
 178              NTSTATUS status;
 179
 180              rwl->uExclusiveWaiters++;
 181
 182              RtlLeaveCriticalSection( &rwl->rtlCS );
 183              status = NtWaitForSingleObject( rwl->hExclusiveReleaseSemaphore, FALSE, NULL );
 184              if( HIWORD(status) )
 185                  goto done;
 186              goto start; /* restart the acquisition to avoid deadlocks */
 187          }
 188     }
 189     else  /* one or more shared locks are in progress */
 190          if( fWait )
 191              goto wait;
 192
 193     if( retVal == 1 )
 194         rwl->hOwningThreadId = ULongToHandle(GetCurrentThreadId());
 195 done:
 196     RtlLeaveCriticalSection( &rwl->rtlCS );
 197     return retVal;
 198 }
 199
 200 /***********************************************************************
 201  *          RtlAcquireResourceShared    (NTDLL.@)
 202  */
 203 BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
 204 {
 205     NTSTATUS status = STATUS_UNSUCCESSFUL;
 206     BYTE retVal = 0;
 207     if( !rwl ) return 0;
 208
 209 start:
 210     RtlEnterCriticalSection( &rwl->rtlCS );
 211     if( rwl->iNumberActive < 0 )
 212     {
 213         if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
 214         {
 215             rwl->iNumberActive--;
 216             retVal = 1;
 217             goto done;
 218         }
 219
 220         if( fWait )
 221         {
 222             rwl->uSharedWaiters++;
 223             RtlLeaveCriticalSection( &rwl->rtlCS );
 224             status = NtWaitForSingleObject( rwl->hSharedReleaseSemaphore, FALSE, NULL );
 225             if( HIWORD(status) )
 226                 goto done;
 227             goto start;
 228         }
 229     }
 230     else
 231     {
 232         if( status != STATUS_WAIT_0 ) /* otherwise RtlReleaseResource() has already done it */
 233             rwl->iNumberActive++;
 234         retVal = 1;
 235     }
 236 done:
 237     RtlLeaveCriticalSection( &rwl->rtlCS );
 238     return retVal;
 239 }
 240
 241
 242 /***********************************************************************
 243  *           RtlReleaseResource         (NTDLL.@)
 244  */
 245 void WINAPI RtlReleaseResource(LPRTL_RWLOCK rwl)
 246 {
 247     RtlEnterCriticalSection( &rwl->rtlCS );
 248
 249     if( rwl->iNumberActive > 0 ) /* have one or more readers */
 250     {
 251         if( --rwl->iNumberActive == 0 )
 252         {
 253             if( rwl->uExclusiveWaiters )
 254             {
 255 wake_exclusive:
 256                 rwl->uExclusiveWaiters--;
 257                 NtReleaseSemaphore( rwl->hExclusiveReleaseSemaphore, 1, NULL );
 258             }
 259         }
 260     }
 261     else
 262     if( rwl->iNumberActive < 0 ) /* have a writer, possibly recursive */
 263     {
 264         if( ++rwl->iNumberActive == 0 )
 265         {
 266             rwl->hOwningThreadId = 0;
 267             if( rwl->uExclusiveWaiters )
 268                 goto wake_exclusive;
 269             else
 270                 if( rwl->uSharedWaiters )
 271                 {
 272                     UINT n = rwl->uSharedWaiters;
 273                     rwl->iNumberActive = rwl->uSharedWaiters; /* prevent new writers from joining until
 274                                                                * all queued readers have done their thing */
 275                     rwl->uSharedWaiters = 0;
 276                     NtReleaseSemaphore( rwl->hSharedReleaseSemaphore, n, NULL );
 277                 }
 278         }
 279     }
 280     RtlLeaveCriticalSection( &rwl->rtlCS );
 281 }
 282
 283
 284 /***********************************************************************
 285  *           RtlDumpResource            (NTDLL.@)
 286  */
 287 void WINAPI RtlDumpResource(LPRTL_RWLOCK rwl)
 288 {
 289     if( rwl )
 290     {
 291         MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
 292                 rwl, rwl->iNumberActive, rwl->uSharedWaiters, rwl->uExclusiveWaiters );
 293         if( rwl->iNumberActive )
 294             MESSAGE("\towner thread = %p\n", rwl->hOwningThreadId );
 295     }
 296 }
 297
 298 /*
 299  *      misc functions
 300  */
 301
 302 static LONG WINAPI debug_exception_handler( EXCEPTION_POINTERS *eptr )
 303 {
 304     EXCEPTION_RECORD *rec = eptr->ExceptionRecord;
 305     return (rec->ExceptionCode == DBG_PRINTEXCEPTION_C) ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH;
 306 }
 307
 308 /******************************************************************************
 309  *      DbgPrint        [NTDLL.@]
 310  */
 311 NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...)
 312 {
 313     NTSTATUS ret;
 314     va_list args;
 315
 316     va_start(args, fmt);
 317     ret = vDbgPrintEx(0, DPFLTR_ERROR_LEVEL, fmt, args);
 318     va_end(args);
 319     return ret;
 320 }
 321
 322
 323 /******************************************************************************
 324  *      DbgPrintEx      [NTDLL.@]
 325  */
 326 NTSTATUS WINAPIV DbgPrintEx(ULONG iComponentId, ULONG Level, LPCSTR fmt, ...)
 327 {
 328     NTSTATUS ret;
 329     va_list args;
 330
 331     va_start(args, fmt);
 332     ret = vDbgPrintEx(iComponentId, Level, fmt, args);
 333     va_end(args);
 334     return ret;
 335 }
 336
 337 /******************************************************************************
 338  *      vDbgPrintEx     [NTDLL.@]
 339  */
 340 NTSTATUS WINAPI vDbgPrintEx( ULONG id, ULONG level, LPCSTR fmt, va_list args )
 341 {
 342     return vDbgPrintExWithPrefix( "", id, level, fmt, args );
 343 }
 344
 345 /******************************************************************************
 346  *      vDbgPrintExWithPrefix  [NTDLL.@]
 347  */
 348 NTSTATUS WINAPI vDbgPrintExWithPrefix( LPCSTR prefix, ULONG id, ULONG level, LPCSTR fmt, va_list args )
 349 {
 350     ULONG level_mask = level <= 31 ? (1 << level) : level;
 351     SIZE_T len = strlen( prefix );
 352     char buf[1024], *end;
 353
 354     strcpy( buf, prefix );
 355     len += _vsnprintf( buf + len, sizeof(buf) - len, fmt, args );
 356     end = buf + len - 1;
 357
 358     WARN_(debugstr)(*end == '\n' ? "%08x:%08x: %s" : "%08x:%08x: %s\n", id, level_mask, buf);
 359
 360     if (level_mask & (1 << DPFLTR_ERROR_LEVEL) && NtCurrentTeb()->Peb->BeingDebugged)
 361     {
 362         __TRY
 363         {
 364             EXCEPTION_RECORD record;
 365             record.ExceptionCode    = DBG_PRINTEXCEPTION_C;
 366             record.ExceptionFlags   = 0;
 367             record.ExceptionRecord  = NULL;
 368             record.ExceptionAddress = RtlRaiseException;
 369             record.NumberParameters = 2;
 370             record.ExceptionInformation[1] = (ULONG_PTR)buf;
 371             record.ExceptionInformation[0] = strlen( buf ) + 1;
 372             RtlRaiseException( &record );
 373         }
 374         __EXCEPT(debug_exception_handler)
 375         {
 376         }
 377         __ENDTRY
 378     }
 379
 380     return STATUS_SUCCESS;
 381 }
 382
 383 /******************************************************************************
 384  *  RtlAcquirePebLock           [NTDLL.@]
 385  */
 386 VOID WINAPI RtlAcquirePebLock(void)
 387 {
 388     RtlEnterCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 389 }
 390
 391 /******************************************************************************
 392  *  RtlReleasePebLock           [NTDLL.@]
 393  */
 394 VOID WINAPI RtlReleasePebLock(void)
 395 {
 396     RtlLeaveCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
 397 }
 398
 399 /******************************************************************************
 400  *  RtlNewSecurityObject                [NTDLL.@]
 401  */
 402 NTSTATUS WINAPI
 403 RtlNewSecurityObject( PSECURITY_DESCRIPTOR ParentDescriptor,
 404                       PSECURITY_DESCRIPTOR CreatorDescriptor,
 405                       PSECURITY_DESCRIPTOR *NewDescriptor,
 406                       BOOLEAN IsDirectoryObject,
 407                       HANDLE Token,
 408                       PGENERIC_MAPPING GenericMapping )
 409 {
 410     FIXME("(%p %p %p %d %p %p) stub!\n", ParentDescriptor, CreatorDescriptor,
 411           NewDescriptor, IsDirectoryObject, Token, GenericMapping);
 412     return STATUS_NOT_IMPLEMENTED;
 413 }
 414
 415 /******************************************************************************
 416  *  RtlDeleteSecurityObject             [NTDLL.@]
 417  */
 418 NTSTATUS WINAPI
 419 RtlDeleteSecurityObject( PSECURITY_DESCRIPTOR *ObjectDescriptor )
 420 {
 421     FIXME("(%p) stub!\n", ObjectDescriptor);
 422     return STATUS_NOT_IMPLEMENTED;
 423 }
 424
 425 /******************************************************************************
 426  *  RtlInitializeGenericTable           [NTDLL.@]
 427  */
 428 void WINAPI RtlInitializeGenericTable(RTL_GENERIC_TABLE *table, PRTL_GENERIC_COMPARE_ROUTINE compare,
 429                                       PRTL_GENERIC_ALLOCATE_ROUTINE allocate, PRTL_GENERIC_FREE_ROUTINE free,
 430                                       void *context)
 431 {
 432     FIXME("(%p, %p, %p, %p, %p) stub!\n", table, compare, allocate, free, context);
 433 }
 434
 435 /******************************************************************************
 436  *  RtlEnumerateGenericTableWithoutSplaying           [NTDLL.@]
 437  */
 438 void * WINAPI RtlEnumerateGenericTableWithoutSplaying(RTL_GENERIC_TABLE *table, void *previous)
 439 {
 440     static int warn_once;
 441
 442     if (!warn_once++)
 443         FIXME("(%p, %p) stub!\n", table, previous);
 444     return NULL;
 445 }
 446
 447 /******************************************************************************
 448  *  RtlNumberGenericTableElements           [NTDLL.@]
 449  */
 450 ULONG WINAPI RtlNumberGenericTableElements(RTL_GENERIC_TABLE *table)
 451 {
 452     FIXME("(%p) stub!\n", table);
 453     return 0;
 454 }
 455
 456 /******************************************************************************
 457  *  RtlMoveMemory   [NTDLL.@]
 458  *
 459  * Move a block of memory that may overlap.
 460  *
 461  * PARAMS
 462  *  Destination [O] End destination for block
 463  *  Source      [O] Where to start copying from
 464  *  Length      [I] Number of bytes to copy
 465  *
 466  * RETURNS
 467  *  Nothing.
 468  */
 469 #undef RtlMoveMemory
 470 VOID WINAPI RtlMoveMemory( void *Destination, const void *Source, SIZE_T Length )
 471 {
 472     memmove(Destination, Source, Length);
 473 }
 474
 475 /******************************************************************************
 476  *  RtlFillMemory   [NTDLL.@]
 477  *
 478  * Set a block of memory with a value.
 479  *
 480  * PARAMS
 481  *  Destination [O] Block to fill
 482  *  Length      [I] Number of bytes to fill
 483  *  Fill        [I] Value to set
 484  *
 485  * RETURNS
 486  *  Nothing.
 487  */
 488 #undef RtlFillMemory
 489 VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
 490 {
 491     memset(Destination, Fill, Length);
 492 }
 493
 494 /******************************************************************************
 495  *  RtlZeroMemory   [NTDLL.@]
 496  *
 497  * Set a block of memory with 0's.
 498  *
 499  * PARAMS
 500  *  Destination [O] Block to fill
 501  *  Length      [I] Number of bytes to fill
 502  *
 503  * RETURNS
 504  *  Nothing.
 505  */
 506 #undef RtlZeroMemory
 507 VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
 508 {
 509     memset(Destination, 0, Length);
 510 }
 511
 512 /******************************************************************************
 513  *  RtlCompareMemory   [NTDLL.@]
 514  *
 515  * Compare one block of memory with another
 516  *
 517  * PARAMS
 518  *  Source1 [I] Source block
 519  *  Source2 [I] Block to compare to Source1
 520  *  Length  [I] Number of bytes to compare
 521  *
 522  * RETURNS
 523  *  The length of the first byte at which Source1 and Source2 differ, or Length
 524  *  if they are the same.
 525  */
 526 SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
 527 {
 528     SIZE_T i;
 529     for(i=0; (i<Length) && (((const BYTE*)Source1)[i]==((const BYTE*)Source2)[i]); i++);
 530     return i;
 531 }
 532
 533 /******************************************************************************
 534  *  RtlCompareMemoryUlong   [NTDLL.@]
 535  *
 536  * Compare a block of memory with a value, a ULONG at a time
 537  *
 538  * PARAMS
 539  *  Source1 [I] Source block. This must be ULONG aligned
 540  *  Length  [I] Number of bytes to compare. This should be a multiple of 4
 541  *  dwVal   [I] Value to compare to
 542  *
 543  * RETURNS
 544  *  The byte position of the first byte at which Source1 is not dwVal.
 545  */
 546 SIZE_T WINAPI RtlCompareMemoryUlong(VOID *Source1, SIZE_T Length, ULONG dwVal)
 547 {
 548     SIZE_T i;
 549     for(i = 0; i < Length/sizeof(ULONG) && ((ULONG *)Source1)[i] == dwVal; i++);
 550     return i * sizeof(ULONG);
 551 }
 552
 553 /******************************************************************************
 554  *  RtlCopyMemory   [NTDLL.@]
 555  */
 556 #undef RtlCopyMemory
 557 void WINAPI RtlCopyMemory(void *dest, const void *src, SIZE_T len)
 558 {
 559     memcpy(dest, src, len);
 560 }
 561
 562 /******************************************************************************
 563  *  RtlAssert                           [NTDLL.@]
 564  *
 565  * Fail a debug assertion.
 566  *
 567  * RETURNS
 568  *  Nothing. This call does not return control to its caller.
 569  *
 570  * NOTES
 571  * Not implemented in non-debug versions.
 572  */
 573 void WINAPI RtlAssert(void *assertion, void *filename, ULONG linenumber, char *message)
 574 {
 575     FIXME("(%s, %s, %u, %s): stub\n", debugstr_a((char*)assertion), debugstr_a((char*)filename),
 576         linenumber, debugstr_a(message));
 577 }
 578
 579 /*************************************************************************
 580  * RtlFillMemoryUlong   [NTDLL.@]
 581  *
 582  * Fill memory with a 32 bit (dword) value.
 583  *
 584  * PARAMS
 585  *  lpDest  [I] Bitmap pointer
 586  *  ulCount [I] Number of dwords to write
 587  *  ulValue [I] Value to fill with
 588  *
 589  * RETURNS
 590  *  Nothing.
 591  */
 592 VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
 593 {
 594   TRACE("(%p,%d,%d)\n", lpDest, ulCount, ulValue);
 595
 596   ulCount /= sizeof(ULONG);
 597   while(ulCount--)
 598     *lpDest++ = ulValue;
 599 }
 600
 601 /*********************************************************************
 602  *                  RtlComputeCrc32   [NTDLL.@]
 603  *
 604  * Calculate the CRC32 checksum of a block of bytes
 605  *
 606  * PARAMS
 607  *  dwInitial [I] Initial CRC value
 608  *  pData     [I] Data block
 609  *  iLen      [I] Length of the byte block
 610  *
 611  * RETURNS
 612  *  The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
 613  */
 614 DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, const BYTE *pData, INT iLen)
 615 {
 616   DWORD crc = ~dwInitial;
 617
 618   TRACE("(%d,%p,%d)\n", dwInitial, pData, iLen);
 619
 620   while (iLen > 0)
 621   {
 622     crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
 623     pData++;
 624     iLen--;
 625   }
 626   return ~crc;
 627 }
 628
 629
 630 /*************************************************************************
 631  * RtlUlonglongByteSwap    [NTDLL.@]
 632  *
 633  * Swap the bytes of an unsigned long long value.
 634  *
 635  * PARAMS
 636  *  i [I] Value to swap bytes of
 637  *
 638  * RETURNS
 639  *  The value with its bytes swapped.
 640  */
 641 ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG i)
 642 {
 643   return ((ULONGLONG)RtlUlongByteSwap(i) << 32) | RtlUlongByteSwap(i>>32);
 644 }
 645
 646 /*************************************************************************
 647  * RtlUlongByteSwap    [NTDLL.@]
 648  *
 649  * Swap the bytes of an unsigned int value.
 650  *
 651  * NOTES
 652  *  ix86 version takes argument in %ecx. Other systems use the inline version.
 653  */
 654 #ifdef __i386__
 655 __ASM_GLOBAL_FUNC(NTDLL_RtlUlongByteSwap,
 656                   "movl %ecx,%eax\n\t"
 657                   "bswap %eax\n\t"
 658                   "ret")
 659 #endif
 660
 661 /*************************************************************************
 662  * RtlUshortByteSwap    [NTDLL.@]
 663  *
 664  * Swap the bytes of an unsigned short value.
 665  *
 666  * NOTES
 667  *  i386 version takes argument in %cx. Other systems use the inline version.
 668  */
 669 #ifdef __i386__
 670 __ASM_GLOBAL_FUNC(NTDLL_RtlUshortByteSwap,
 671                   "movb %ch,%al\n\t"
 672                   "movb %cl,%ah\n\t"
 673                   "ret")
 674 #endif
 675
 676
 677 /*************************************************************************
 678  * RtlUniform   [NTDLL.@]
 679  *
 680  * Generates an uniform random number
 681  *
 682  * PARAMS
 683  *  seed [O] The seed of the Random function
 684  *
 685  * RETURNS
 686  *  It returns a random number uniformly distributed over [0..MAXLONG-1].
 687  *
 688  * NOTES
 689  *  Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
 690  *  In our case the algorithm is:
 691  *
 692  *|  result = (*seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
 693  *|
 694  *|  *seed = result;
 695  *
 696  * DIFFERENCES
 697  *  The native documentation states that the random number is
 698  *  uniformly distributed over [0..MAXLONG]. In reality the native
 699  *  function and our function return a random number uniformly
 700  *  distributed over [0..MAXLONG-1].
 701  */
 702 ULONG WINAPI RtlUniform (PULONG seed)
 703 {
 704     ULONG result;
 705
 706    /*
 707     * Instead of the algorithm stated above, we use the algorithm
 708     * below, which is totally equivalent (see the tests), but does
 709     * not use a division and therefore is faster.
 710     */
 711     result = *seed * 0xffffffed + 0x7fffffc3;
 712     if (result == 0xffffffff || result == 0x7ffffffe) {
 713         result = (result + 2) & MAXLONG;
 714     } else if (result == 0x7fffffff) {
 715         result = 0;
 716     } else if ((result & 0x80000000) == 0) {
 717         result = result + (~result & 1);
 718     } else {
 719         result = (result + (result & 1)) & MAXLONG;
 720     } /* if */
 721     *seed = result;
 722     return result;
 723 }
 724
 725
 726 /*************************************************************************
 727  * RtlRandom   [NTDLL.@]
 728  *
 729  * Generates a random number
 730  *
 731  * PARAMS
 732  *  seed [O] The seed of the Random function
 733  *
 734  * RETURNS
 735  *  It returns a random number distributed over [0..MAXLONG-1].
 736  */
 737 ULONG WINAPI RtlRandom (PULONG seed)
 738 {
 739     static ULONG saved_value[128] =
 740     { /*   0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
 741       /*   8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
 742       /*  16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
 743       /*  24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
 744       /*  32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
 745       /*  40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
 746       /*  48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
 747       /*  56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
 748       /*  64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
 749       /*  72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
 750       /*  80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
 751       /*  88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
 752       /*  96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
 753       /* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
 754       /* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
 755       /* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
 756     ULONG rand;
 757     int pos;
 758     ULONG result;
 759
 760     rand = (*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 761     *seed = (rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
 762     pos = *seed & 0x7f;
 763     result = saved_value[pos];
 764     saved_value[pos] = rand;
 765     return(result);
 766 }
 767
 768
 769 /*************************************************************************
 770  * RtlRandomEx   [NTDLL.@]
 771  */
 772 ULONG WINAPI RtlRandomEx( ULONG *seed )
 773 {
 774     WARN( "semi-stub: should use a different algorithm\n" );
 775     return RtlRandom( seed );
 776 }
 777
 778 /*************************************************************************
 779  * RtlAreAllAccessesGranted   [NTDLL.@]
 780  *
 781  * Check if all desired accesses are granted
 782  *
 783  * RETURNS
 784  *  TRUE: All desired accesses are granted
 785  *  FALSE: Otherwise
 786  */
 787 BOOLEAN WINAPI RtlAreAllAccessesGranted(
 788     ACCESS_MASK GrantedAccess,
 789     ACCESS_MASK DesiredAccess)
 790 {
 791     return (GrantedAccess & DesiredAccess) == DesiredAccess;
 792 }
 793
 794
 795 /*************************************************************************
 796  * RtlAreAnyAccessesGranted   [NTDLL.@]
 797  *
 798  * Check if at least one of the desired accesses is granted
 799  *
 800  * PARAMS
 801  *  GrantedAccess [I] Access mask of granted accesses
 802  *  DesiredAccess [I] Access mask of desired accesses
 803  *
 804  * RETURNS
 805  *  TRUE: At least one of the desired accesses is granted
 806  *  FALSE: Otherwise
 807  */
 808 BOOLEAN WINAPI RtlAreAnyAccessesGranted(
 809     ACCESS_MASK GrantedAccess,
 810     ACCESS_MASK DesiredAccess)
 811 {
 812     return (GrantedAccess & DesiredAccess) != 0;
 813 }
 814
 815
 816 /*************************************************************************
 817  * RtlMapGenericMask   [NTDLL.@]
 818  *
 819  * Determine the nongeneric access rights specified by an access mask
 820  *
 821  * RETURNS
 822  *  Nothing.
 823  */
 824 void WINAPI RtlMapGenericMask(
 825     PACCESS_MASK AccessMask,
 826     const GENERIC_MAPPING *GenericMapping)
 827 {
 828     if (*AccessMask & GENERIC_READ) {
 829         *AccessMask |= GenericMapping->GenericRead;
 830     } /* if */
 831
 832     if (*AccessMask & GENERIC_WRITE) {
 833         *AccessMask |= GenericMapping->GenericWrite;
 834     } /* if */
 835
 836     if (*AccessMask & GENERIC_EXECUTE) {
 837         *AccessMask |= GenericMapping->GenericExecute;
 838     } /* if */
 839
 840     if (*AccessMask & GENERIC_ALL) {
 841         *AccessMask |= GenericMapping->GenericAll;
 842     } /* if */
 843
 844     *AccessMask &= 0x0FFFFFFF;
 845 }
 846
 847
 848 /*************************************************************************
 849  * RtlCopyLuid   [NTDLL.@]
 850  *
 851  * Copy a local unique ID.
 852  *
 853  * PARAMS
 854  *  LuidDest [O] Destination for the copied Luid
 855  *  LuidSrc  [I] Source Luid to copy to LuidDest
 856  *
 857  * RETURNS
 858  *  Nothing.
 859  */
 860 void WINAPI RtlCopyLuid (PLUID LuidDest, const LUID *LuidSrc)
 861 {
 862     *LuidDest = *LuidSrc;
 863 }
 864
 865
 866 /*************************************************************************
 867  * RtlEqualLuid   [NTDLL.@]
 868  *
 869  * Compare two local unique IDs.
 870  *
 871  * PARAMS
 872  *  Luid1 [I] First Luid to compare to Luid2
 873  *  Luid2 [I] Second Luid to compare to Luid1
 874  *
 875  * RETURNS
 876  *  TRUE: The two LUIDs are equal.
 877  *  FALSE: Otherwise
 878  */
 879 BOOLEAN WINAPI RtlEqualLuid (const LUID *Luid1, const LUID *Luid2)
 880 {
 881   return (Luid1->LowPart ==  Luid2->LowPart && Luid1->HighPart == Luid2->HighPart);
 882 }
 883
 884
 885 /*************************************************************************
 886  * RtlCopyLuidAndAttributesArray   [NTDLL.@]
 887  *
 888  * Copy an array of local unique IDs and attributes.
 889  *
 890  * PARAMS
 891  *  Count [I] Number of Luid/attributes in Src
 892  *  Src   [I] Source Luid/attributes to copy
 893  *  Dest  [O] Destination for copied Luid/attributes
 894  *
 895  * RETURNS
 896  *  Nothing.
 897  *
 898  * NOTES
 899  *  Dest must be large enough to hold Src.
 900  */
 901 void WINAPI RtlCopyLuidAndAttributesArray(
 902     ULONG Count,
 903     const LUID_AND_ATTRIBUTES *Src,
 904     PLUID_AND_ATTRIBUTES Dest)
 905 {
 906     ULONG i;
 907
 908     for (i = 0; i < Count; i++) Dest[i] = Src[i];
 909 }
 910
 911 static BOOL parse_ipv4_component(const WCHAR **str, BOOL strict, ULONG *value)
 912 {
 913     int base = 10, d;
 914     WCHAR c;
 915     ULONG cur_value, prev_value = 0;
 916     BOOL success = FALSE;
 917
 918     if (**str == '.')
 919     {
 920         *str += 1;
 921         return FALSE;
 922     }
 923
 924     if ((*str)[0] == '0')
 925     {
 926         if ((*str)[1] == 'x' || (*str)[1] == 'X')
 927         {
 928             *str += 2;
 929             if (strict) return FALSE;
 930             base = 16;
 931         }
 932         else if ((*str)[1] >= '0' && (*str)[1] <= '9')
 933         {
 934             *str += 1;
 935             if (strict) return FALSE;
 936             base = 8;
 937         }
 938     }
 939
 940     for (cur_value = 0; **str; *str += 1)
 941     {
 942         c = **str;
 943         if (c >= ARRAY_SIZE(hex_table)) break;
 944         d = hex_table[c];
 945         if (d == -1 || d >= base) break;
 946         cur_value = cur_value * base + d;
 947         success = TRUE;
 948         if (cur_value < prev_value) return FALSE; /* overflow */
 949         prev_value = cur_value;
 950     }
 951
 952     if (success) *value = cur_value;
 953     return success;
 954 }
 955
 956 static NTSTATUS ipv4_string_to_address(const WCHAR *str, BOOL strict,
 957                                        const WCHAR **terminator, IN_ADDR *address, USHORT *port)
 958 {
 959     ULONG fields[4];
 960     int n = 0;
 961
 962     for (;;)
 963     {
 964         if (!parse_ipv4_component(&str, strict, &fields[n]))
 965             goto error;
 966         n++;
 967         if (*str != '.')
 968             break;
 969         if (n == 4)
 970             goto error;
 971         str++;
 972     }
 973
 974     if (strict && n < 4)
 975         goto error;
 976
 977     switch (n)
 978     {
 979         case 4:
 980             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFF || fields[3] > 0xFF)
 981                 goto error;
 982             address->S_un.S_un_b.s_b1 = fields[0];
 983             address->S_un.S_un_b.s_b2 = fields[1];
 984             address->S_un.S_un_b.s_b3 = fields[2];
 985             address->S_un.S_un_b.s_b4 = fields[3];
 986             break;
 987         case 3:
 988             if (fields[0] > 0xFF || fields[1] > 0xFF || fields[2] > 0xFFFF)
 989                 goto error;
 990             address->S_un.S_un_b.s_b1 = fields[0];
 991             address->S_un.S_un_b.s_b2 = fields[1];
 992             address->S_un.S_un_b.s_b3 = (fields[2] & 0xFF00) >> 8;
 993             address->S_un.S_un_b.s_b4 = (fields[2] & 0x00FF);
 994             break;
 995         case 2:
 996             if (fields[0] > 0xFF || fields[1] > 0xFFFFFF)
 997                 goto error;
 998             address->S_un.S_un_b.s_b1 = fields[0];
 999             address->S_un.S_un_b.s_b2 = (fields[1] & 0xFF0000) >> 16;
1000             address->S_un.S_un_b.s_b3 = (fields[1] & 0x00FF00) >> 8;
1001             address->S_un.S_un_b.s_b4 = (fields[1] & 0x0000FF);
1002             break;
1003         case 1:
1004             address->S_un.S_un_b.s_b1 = (fields[0] & 0xFF000000) >> 24;
1005             address->S_un.S_un_b.s_b2 = (fields[0] & 0x00FF0000) >> 16;
1006             address->S_un.S_un_b.s_b3 = (fields[0] & 0x0000FF00) >> 8;
1007             address->S_un.S_un_b.s_b4 = (fields[0] & 0x000000FF);
1008             break;
1009         default:
1010             goto error;
1011     }
1012
1013     if (terminator) *terminator = str;
1014
1015     if (*str == ':')
1016     {
1017         str++;
1018         if (!parse_ipv4_component(&str, FALSE, &fields[0]))
1019             goto error;
1020         if (!fields[0] || fields[0] > 0xFFFF || *str)
1021             goto error;
1022         if (port)
1023         {
1024             *port = htons(fields[0]);
1025             if (terminator) *terminator = str;
1026         }
1027     }
1028
1029     if (!terminator && *str)
1030         return STATUS_INVALID_PARAMETER;
1031     return STATUS_SUCCESS;
1032
1033 error:
1034     if (terminator) *terminator = str;
1035     return STATUS_INVALID_PARAMETER;
1036 }
1037
1038 /***********************************************************************
1039  * RtlIpv4StringToAddressExW [NTDLL.@]
1040  */
1041 NTSTATUS WINAPI RtlIpv4StringToAddressExW(const WCHAR *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1042 {
1043     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, address, port);
1044     if (!str || !address || !port) return STATUS_INVALID_PARAMETER;
1045     return ipv4_string_to_address(str, strict, NULL, address, port);
1046 }
1047
1048 /***********************************************************************
1049  * RtlIpv4StringToAddressW [NTDLL.@]
1050  */
1051 NTSTATUS WINAPI RtlIpv4StringToAddressW(const WCHAR *str, BOOLEAN strict, const WCHAR **terminator, IN_ADDR *address)
1052 {
1053     TRACE("(%s, %u, %p, %p)\n", debugstr_w(str), strict, terminator, address);
1054     return ipv4_string_to_address(str, strict, terminator, address, NULL);
1055 }
1056
1057 /***********************************************************************
1058  * RtlIpv4StringToAddressExA [NTDLL.@]
1059  */
1060 NTSTATUS WINAPI RtlIpv4StringToAddressExA(const char *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
1061 {
1062     WCHAR wstr[32];
1063
1064     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, address, port);
1065
1066     if (!str || !address || !port)
1067         return STATUS_INVALID_PARAMETER;
1068
1069     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1070     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1071     return ipv4_string_to_address(wstr, strict, NULL, address, port);
1072 }
1073
1074 /***********************************************************************
1075  * RtlIpv4StringToAddressA [NTDLL.@]
1076  */
1077 NTSTATUS WINAPI RtlIpv4StringToAddressA(const char *str, BOOLEAN strict, const char **terminator, IN_ADDR *address)
1078 {
1079     WCHAR wstr[32];
1080     const WCHAR *wterminator;
1081     NTSTATUS ret;
1082
1083     TRACE("(%s, %u, %p, %p)\n", debugstr_a(str), strict, terminator, address);
1084
1085     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1086     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1087     ret = ipv4_string_to_address(wstr, strict, &wterminator, address, NULL);
1088     if (terminator) *terminator = str + (wterminator - wstr);
1089     return ret;
1090 }
1091
1092 static BOOL parse_ipv6_component(const WCHAR **str, int base, ULONG *value)
1093 {
1094     WCHAR *terminator;
1095     if (**str >= ARRAY_SIZE(hex_table) || hex_table[**str] == -1) return FALSE;
1096     *value = min(wcstoul(*str, &terminator, base), 0x7FFFFFFF);
1097     if (*terminator == '0') terminator++; /* "0x" but nothing valid after */
1098     else if (terminator == *str) return FALSE;
1099     *str = terminator;
1100     return TRUE;
1101 }
1102
1103 static NTSTATUS ipv6_string_to_address(const WCHAR *str, BOOL ex,
1104                                        const WCHAR **terminator, IN6_ADDR *address, ULONG *scope, USHORT *port)
1105 {
1106     BOOL expecting_port = FALSE, has_0x = FALSE, too_big = FALSE;
1107     int n_bytes = 0, n_ipv4_bytes = 0, gap = -1;
1108     ULONG ip_component, scope_component = 0, port_component = 0;
1109     const WCHAR *prev_str;
1110
1111     if (str[0] == '[')
1112     {
1113         if (!ex) goto error;
1114         expecting_port = TRUE;
1115         str++;
1116     }
1117
1118     if (str[0] == ':')
1119     {
1120         if (str[1] != ':') goto error;
1121         str++;
1122         /* Windows bug: a double colon at the beginning is treated as 4 bytes of zeros instead of 2 */
1123         address->u.Word[0] = 0;
1124         n_bytes = 2;
1125     }
1126
1127     for (;;)
1128     {
1129         if (!n_ipv4_bytes && *str == ':')
1130         {
1131             /* double colon */
1132             if (gap != -1) goto error;
1133             str++;
1134             prev_str = str;
1135             gap = n_bytes;
1136             if (n_bytes == 14 || !parse_ipv6_component(&str, 16, &ip_component)) break;
1137             str = prev_str;
1138         }
1139         else
1140         {
1141             prev_str = str;
1142         }
1143
1144         if (!n_ipv4_bytes && n_bytes <= (gap != -1 ? 10 : 12))
1145         {
1146             if (parse_ipv6_component(&str, 10, &ip_component) && *str == '.')
1147                 n_ipv4_bytes = 1;
1148             str = prev_str;
1149         }
1150
1151         if (n_ipv4_bytes)
1152         {
1153             /* IPv4 component */
1154             if (!parse_ipv6_component(&str, 10, &ip_component)) goto error;
1155             if (str - prev_str > 3 || ip_component > 255)
1156             {
1157                 too_big = TRUE;
1158             }
1159             else
1160             {
1161                 if (*str != '.' && (n_ipv4_bytes < 4 || (n_bytes < 15 && gap == -1))) goto error;
1162                 address->u.Byte[n_bytes] = ip_component;
1163                 n_bytes++;
1164             }
1165             if (n_ipv4_bytes == 4 || *str != '.') break;
1166             n_ipv4_bytes++;
1167         }
1168         else
1169         {
1170             /* IPv6 component */
1171             if (!parse_ipv6_component(&str, 16, &ip_component)) goto error;
1172             if (prev_str[0] == '0' && (prev_str[1] == 'x' || prev_str[1] == 'X'))
1173             {
1174                 /* Windows "feature": the last IPv6 component can start with "0x" and be longer than 4 digits */
1175                 if (terminator) *terminator = prev_str + 1; /* Windows says that the "x" is the terminator */
1176                 if (n_bytes < 14 && gap == -1) return STATUS_INVALID_PARAMETER;
1177                 address->u.Word[n_bytes/2] = htons(ip_component);
1178                 n_bytes += 2;
1179                 has_0x = TRUE;
1180                 goto fill_gap;
1181             }
1182             if (*str != ':' && n_bytes < 14 && gap == -1) goto error;
1183             if (str - prev_str > 4)
1184                 too_big = TRUE;
1185             else
1186                 address->u.Word[n_bytes/2] = htons(ip_component);
1187             n_bytes += 2;
1188             if (*str != ':' || (gap != -1 && str[1] == ':')) break;
1189         }
1190         if (n_bytes == (gap != -1 ? 14 : 16)) break;
1191         if (too_big) return STATUS_INVALID_PARAMETER;
1192         str++;
1193     }
1194
1195     if (terminator) *terminator = str;
1196     if (too_big) return STATUS_INVALID_PARAMETER;
1197
1198 fill_gap:
1199     if (gap == -1)
1200     {
1201         if (n_bytes < 16) goto error;
1202     }
1203     else
1204     {
1205         memmove(address->u.Byte + 16 - (n_bytes - gap), address->u.Byte + gap, n_bytes - gap);
1206         memset(address->u.Byte + gap, 0, 16 - n_bytes);
1207     }
1208
1209     if (ex)
1210     {
1211         if (has_0x) goto error;
1212
1213         if (*str == '%')
1214         {
1215             str++;
1216             if (!parse_ipv4_component(&str, TRUE, &scope_component)) goto error;
1217         }
1218
1219         if (expecting_port)
1220         {
1221             if (*str != ']') goto error;
1222             str++;
1223             if (*str == ':')
1224             {
1225                 str++;
1226                 if (!parse_ipv4_component(&str, FALSE, &port_component)) goto error;
1227                 if (!port_component || port_component > 0xFFFF || *str) goto error;
1228                 port_component = htons(port_component);
1229             }
1230         }
1231     }
1232
1233     if (!terminator && *str) return STATUS_INVALID_PARAMETER;
1234
1235     if (scope) *scope = scope_component;
1236     if (port) *port = port_component;
1237
1238     return STATUS_SUCCESS;
1239
1240 error:
1241     if (terminator) *terminator = str;
1242     return STATUS_INVALID_PARAMETER;
1243 }
1244
1245 /***********************************************************************
1246  * RtlIpv6StringToAddressExW [NTDLL.@]
1247  */
1248 NTSTATUS NTAPI RtlIpv6StringToAddressExW(const WCHAR *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1249 {
1250     TRACE("(%s, %p, %p, %p)\n", debugstr_w(str), address, scope, port);
1251     if (!str || !address || !scope || !port) return STATUS_INVALID_PARAMETER;
1252     return ipv6_string_to_address(str, TRUE, NULL, address, scope, port);
1253 }
1254
1255 /***********************************************************************
1256  * RtlIpv6StringToAddressW [NTDLL.@]
1257  */
1258 NTSTATUS WINAPI RtlIpv6StringToAddressW(const WCHAR *str, const WCHAR **terminator, IN6_ADDR *address)
1259 {
1260     TRACE("(%s, %p, %p)\n", debugstr_w(str), terminator, address);
1261     return ipv6_string_to_address(str, FALSE, terminator, address, NULL, NULL);
1262 }
1263
1264 /***********************************************************************
1265  * RtlIpv6StringToAddressExA [NTDLL.@]
1266  */
1267 NTSTATUS WINAPI RtlIpv6StringToAddressExA(const char *str, IN6_ADDR *address, ULONG *scope, USHORT *port)
1268 {
1269     WCHAR wstr[128];
1270
1271     TRACE("(%s, %p, %p, %p)\n", debugstr_a(str), address, scope, port);
1272
1273     if (!str || !address || !scope || !port)
1274         return STATUS_INVALID_PARAMETER;
1275
1276     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1277     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1278     return ipv6_string_to_address(wstr, TRUE, NULL, address, scope, port);
1279 }
1280
1281 /***********************************************************************
1282  * RtlIpv6StringToAddressA [NTDLL.@]
1283  */
1284 NTSTATUS WINAPI RtlIpv6StringToAddressA(const char *str, const char **terminator, IN6_ADDR *address)
1285 {
1286     WCHAR wstr[128];
1287     const WCHAR *wterminator = NULL;
1288     NTSTATUS ret;
1289
1290     TRACE("(%s, %p, %p)\n", debugstr_a(str), terminator, address);
1291
1292     RtlMultiByteToUnicodeN(wstr, sizeof(wstr), NULL, str, strlen(str) + 1);
1293     wstr[ARRAY_SIZE(wstr) - 1] = 0;
1294     ret = ipv6_string_to_address(wstr, FALSE, &wterminator, address, NULL, NULL);
1295     if (terminator && wterminator) *terminator = str + (wterminator - wstr);
1296     return ret;
1297 }
1298
1299 /***********************************************************************
1300  * RtlIpv4AddressToStringExW [NTDLL.@]
1301  *
1302  * Convert the given ipv4 address and optional the port to a string
1303  *
1304  * PARAMS
1305  *  pin     [I]  PTR to the ip address to convert (network byte order)
1306  *  port    [I]  optional port to convert (network byte order)
1307  *  buffer  [O]  destination buffer for the result
1308  *  psize   [IO] PTR to available/used size of the destination buffer
1309  *
1310  * RETURNS
1311  *  Success: STATUS_SUCCESS
1312  *  Failure: STATUS_INVALID_PARAMETER
1313  *
1314  */
1315 NTSTATUS WINAPI RtlIpv4AddressToStringExW(const IN_ADDR *pin, USHORT port, LPWSTR buffer, PULONG psize)
1316 {
1317     WCHAR tmp_ip[32];
1318     ULONG needed;
1319
1320     if (!pin || !buffer || !psize)
1321         return STATUS_INVALID_PARAMETER;
1322
1323     TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1324
1325     needed = swprintf(tmp_ip, ARRAY_SIZE(tmp_ip), L"%u.%u.%u.%u",
1326                       pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1327                       pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1328
1329     if (port) needed += swprintf(tmp_ip + needed, ARRAY_SIZE(tmp_ip) - needed, L":%u", ntohs(port));
1330
1331     if (*psize > needed) {
1332         *psize = needed + 1;
1333         wcscpy(buffer, tmp_ip);
1334         return STATUS_SUCCESS;
1335     }
1336
1337     *psize = needed + 1;
1338     return STATUS_INVALID_PARAMETER;
1339 }
1340
1341 /***********************************************************************
1342  * RtlIpv4AddressToStringExA [NTDLL.@]
1343  *
1344  * Convert the given ipv4 address and optional the port to a string
1345  *
1346  * See RtlIpv4AddressToStringExW
1347  */
1348 NTSTATUS WINAPI RtlIpv4AddressToStringExA(const IN_ADDR *pin, USHORT port, LPSTR buffer, PULONG psize)
1349 {
1350     CHAR tmp_ip[32];
1351     ULONG needed;
1352
1353     if (!pin || !buffer || !psize)
1354         return STATUS_INVALID_PARAMETER;
1355
1356     TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
1357
1358     needed = sprintf(tmp_ip, "%u.%u.%u.%u",
1359                      pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
1360                      pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
1361
1362     if (port) needed += sprintf(tmp_ip + needed, ":%u", ntohs(port));
1363
1364     if (*psize > needed) {
1365         *psize = needed + 1;
1366         strcpy(buffer, tmp_ip);
1367         return STATUS_SUCCESS;
1368     }
1369
1370     *psize = needed + 1;
1371     return STATUS_INVALID_PARAMETER;
1372 }
1373
1374 /***********************************************************************
1375  * RtlIpv4AddressToStringW [NTDLL.@]
1376  *
1377  * Convert the given ipv4 address to a string
1378  *
1379  * PARAMS
1380  *  pin     [I]  PTR to the ip address to convert (network byte order)
1381  *  buffer  [O]  destination buffer for the result (at least 16 character)
1382  *
1383  * RETURNS
1384  *  PTR to the 0 character at the end of the converted string
1385  *
1386  */
1387 WCHAR * WINAPI RtlIpv4AddressToStringW(const IN_ADDR *pin, LPWSTR buffer)
1388 {
1389     ULONG size = 16;
1390
1391     if (RtlIpv4AddressToStringExW(pin, 0, buffer, &size)) size = 0;
1392     return buffer + size - 1;
1393 }
1394
1395 /***********************************************************************
1396  * RtlIpv4AddressToStringA [NTDLL.@]
1397  *
1398  * Convert the given ipv4 address to a string
1399  *
1400  * See RtlIpv4AddressToStringW
1401  */
1402 CHAR * WINAPI RtlIpv4AddressToStringA(const IN_ADDR *pin, LPSTR buffer)
1403 {
1404     ULONG size = 16;
1405
1406     if (RtlIpv4AddressToStringExA(pin, 0, buffer, &size)) size = 0;
1407     return buffer + size - 1;
1408 }
1409
1410 static BOOL is_ipv4_in_ipv6(const IN6_ADDR *address)
1411 {
1412     if (address->s6_words[5] == htons(0x5efe) && (address->s6_words[4] & ~htons(0x200)) == 0)
1413         return TRUE;
1414     if (*(UINT64 *)address != 0)
1415         return FALSE;
1416     if (address->s6_words[4] != 0 && address->s6_words[4] != 0xffff)
1417         return FALSE;
1418     if (address->s6_words[4] == 0 && address->s6_words[5] != 0 && address->s6_words[5] != 0xffff)
1419         return FALSE;
1420     if (address->s6_words[4] == 0xffff && address->s6_words[5] != 0)
1421         return FALSE;
1422     if (address->s6_words[6] == 0)
1423         return FALSE;
1424     return TRUE;
1425 }
1426
1427 /***********************************************************************
1428  * RtlIpv6AddressToStringExA [NTDLL.@]
1429  */
1430 NTSTATUS WINAPI RtlIpv6AddressToStringExA(const IN6_ADDR *address, ULONG scope, USHORT port, char *str, ULONG *size)
1431 {
1432     char buffer[64], *p = buffer;
1433     int i, len, gap = -1, gap_len = 1, ipv6_end = 8;
1434     ULONG needed;
1435     NTSTATUS ret;
1436
1437     TRACE("(%p %u %u %p %p)\n", address, scope, port, str, size);
1438
1439     if (!address || !str || !size)
1440         return STATUS_INVALID_PARAMETER;
1441
1442     if (is_ipv4_in_ipv6(address))
1443         ipv6_end = 6;
1444
1445     for (i = 0; i < ipv6_end; i++)
1446     {
1447         len = 0;
1448         while (!address->s6_words[i] && i < ipv6_end)
1449         {
1450             i++;
1451             len++;
1452         }
1453         if (len > gap_len)
1454         {
1455             gap = i - len;
1456             gap_len = len;
1457         }
1458     }
1459
1460     if (port) p += sprintf(p, "[");
1461
1462     i = 0;
1463     while (i < ipv6_end)
1464     {
1465         if (i == gap)
1466         {
1467             p += sprintf(p, ":");
1468             i += gap_len;
1469             if (i == ipv6_end) p += sprintf(p, ":");
1470             continue;
1471         }
1472         if (i > 0) p += sprintf(p, ":");
1473         p += sprintf(p, "%x", ntohs(address->s6_words[i]));
1474         i++;
1475     }
1476
1477     if (ipv6_end == 6)
1478     {
1479         if (p[-1] != ':') p += sprintf(p, ":");
1480         p = RtlIpv4AddressToStringA((IN_ADDR *)(address->s6_words + 6), p);
1481     }
1482
1483     if (scope) p += sprintf(p, "%%%u", scope);
1484
1485     if (port) p += sprintf(p, "]:%u", ntohs(port));
1486
1487     needed = p - buffer + 1;
1488
1489     if (*size >= needed)
1490     {
1491         strcpy(str, buffer);
1492         ret = STATUS_SUCCESS;
1493     }
1494     else
1495     {
1496         ret = STATUS_INVALID_PARAMETER;
1497     }
1498
1499     *size = needed;
1500     return ret;
1501 }
1502
1503 /***********************************************************************
1504  * RtlIpv6AddressToStringA [NTDLL.@]
1505  */
1506 char * WINAPI RtlIpv6AddressToStringA(const IN6_ADDR *address, char *str)
1507 {
1508     ULONG size = 46;
1509     if (!address || !str) return str - 1;
1510     str[45] = 0; /* this byte is set even though the string is always shorter */
1511     RtlIpv6AddressToStringExA(address, 0, 0, str, &size);
1512     return str + size - 1;
1513 }
1514
1515 /***********************************************************************
1516  * RtlIpv6AddressToStringExW [NTDLL.@]
1517  */
1518 NTSTATUS WINAPI RtlIpv6AddressToStringExW(const IN6_ADDR *address, ULONG scope, USHORT port, WCHAR *str, ULONG *size)
1519 {
1520     char cstr[64];
1521     NTSTATUS ret = RtlIpv6AddressToStringExA(address, scope, port, cstr, size);
1522     if (ret == STATUS_SUCCESS) RtlMultiByteToUnicodeN(str, *size * sizeof(WCHAR), NULL, cstr, *size);
1523     return ret;
1524 }
1525
1526 /***********************************************************************
1527  * RtlIpv6AddressToStringW [NTDLL.@]
1528  */
1529 WCHAR * WINAPI RtlIpv6AddressToStringW(const IN6_ADDR *address, WCHAR *str)
1530 {
1531     ULONG size = 46;
1532     if (!address || !str) return str;
1533     str[45] = 0; /* this word is set even though the string is always shorter */
1534     if (RtlIpv6AddressToStringExW(address, 0, 0, str, &size) != STATUS_SUCCESS)
1535         return str;
1536     return str + size - 1;
1537 }
1538
1539 /***********************************************************************
1540  * get_pointer_obfuscator (internal)
1541  */
1542 static DWORD_PTR get_pointer_obfuscator( void )
1543 {
1544     static DWORD_PTR pointer_obfuscator;
1545
1546     if (!pointer_obfuscator)
1547     {
1548         ULONG seed = NtGetTickCount();
1549         ULONG_PTR rand;
1550
1551         /* generate a random value for the obfuscator */
1552         rand = RtlUniform( &seed );
1553
1554         /* handle 64bit pointers */
1555         rand ^= (ULONG_PTR)RtlUniform( &seed ) << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1556
1557         /* set the high bits so dereferencing obfuscated pointers will (usually) crash */
1558         rand |= (ULONG_PTR)0xc0000000 << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
1559
1560         InterlockedCompareExchangePointer( (void**) &pointer_obfuscator, (void*) rand, NULL );
1561     }
1562
1563     return pointer_obfuscator;
1564 }
1565
1566 /*************************************************************************
1567  * RtlEncodePointer   [NTDLL.@]
1568  */
1569 PVOID WINAPI RtlEncodePointer( PVOID ptr )
1570 {
1571     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1572     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1573 }
1574
1575 PVOID WINAPI RtlDecodePointer( PVOID ptr )
1576 {
1577     DWORD_PTR ptrval = (DWORD_PTR) ptr;
1578     return (PVOID)(ptrval ^ get_pointer_obfuscator());
1579 }
1580
1581 /*************************************************************************
1582  * RtlInitializeSListHead   [NTDLL.@]
1583  */
1584 VOID WINAPI RtlInitializeSListHead(PSLIST_HEADER list)
1585 {
1586 #ifdef _WIN64
1587     list->s.Alignment = list->s.Region = 0;
1588     list->Header16.HeaderType = 1;  /* we use the 16-byte header */
1589 #else
1590     list->Alignment = 0;
1591 #endif
1592 }
1593
1594 /*************************************************************************
1595  * RtlQueryDepthSList   [NTDLL.@]
1596  */
1597 WORD WINAPI RtlQueryDepthSList(PSLIST_HEADER list)
1598 {
1599 #ifdef _WIN64
1600     return list->Header16.Depth;
1601 #else
1602     return list->s.Depth;
1603 #endif
1604 }
1605
1606 /*************************************************************************
1607  * RtlFirstEntrySList   [NTDLL.@]
1608  */
1609 PSLIST_ENTRY WINAPI RtlFirstEntrySList(const SLIST_HEADER* list)
1610 {
1611 #ifdef _WIN64
1612     return (SLIST_ENTRY *)((ULONG_PTR)list->Header16.NextEntry << 4);
1613 #else
1614     return list->s.Next.Next;
1615 #endif
1616 }
1617
1618 /*************************************************************************
1619  * RtlInterlockedFlushSList   [NTDLL.@]
1620  */
1621 PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
1622 {
1623     SLIST_HEADER old, new;
1624
1625 #ifdef _WIN64
1626     if (!list->Header16.NextEntry) return NULL;
1627     new.s.Alignment = new.s.Region = 0;
1628     new.Header16.HeaderType = 1;  /* we use the 16-byte header */
1629     do
1630     {
1631         old = *list;
1632         new.Header16.Sequence = old.Header16.Sequence + 1;
1633     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1634     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1635 #else
1636     if (!list->s.Next.Next) return NULL;
1637     new.Alignment = 0;
1638     do
1639     {
1640         old = *list;
1641         new.s.Sequence = old.s.Sequence + 1;
1642     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1643                                           old.Alignment) != old.Alignment);
1644     return old.s.Next.Next;
1645 #endif
1646 }
1647
1648 /*************************************************************************
1649  * RtlInterlockedPushEntrySList   [NTDLL.@]
1650  */
1651 PSLIST_ENTRY WINAPI RtlInterlockedPushEntrySList(PSLIST_HEADER list, PSLIST_ENTRY entry)
1652 {
1653     SLIST_HEADER old, new;
1654
1655 #ifdef _WIN64
1656     new.Header16.NextEntry = (ULONG_PTR)entry >> 4;
1657     do
1658     {
1659         old = *list;
1660         entry->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1661         new.Header16.Depth = old.Header16.Depth + 1;
1662         new.Header16.Sequence = old.Header16.Sequence + 1;
1663     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1664     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1665 #else
1666     new.s.Next.Next = entry;
1667     do
1668     {
1669         old = *list;
1670         entry->Next = old.s.Next.Next;
1671         new.s.Depth = old.s.Depth + 1;
1672         new.s.Sequence = old.s.Sequence + 1;
1673     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1674                                           old.Alignment) != old.Alignment);
1675     return old.s.Next.Next;
1676 #endif
1677 }
1678
1679 /*************************************************************************
1680  * RtlInterlockedPopEntrySList   [NTDLL.@]
1681  */
1682 PSLIST_ENTRY WINAPI RtlInterlockedPopEntrySList(PSLIST_HEADER list)
1683 {
1684     SLIST_HEADER old, new;
1685     PSLIST_ENTRY entry;
1686
1687 #ifdef _WIN64
1688     do
1689     {
1690         old = *list;
1691         if (!(entry = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4))) return NULL;
1692         /* entry could be deleted by another thread */
1693         __TRY
1694         {
1695             new.Header16.NextEntry = (ULONG_PTR)entry->Next >> 4;
1696             new.Header16.Depth = old.Header16.Depth - 1;
1697             new.Header16.Sequence = old.Header16.Sequence + 1;
1698         }
1699         __EXCEPT_PAGE_FAULT
1700         {
1701         }
1702         __ENDTRY
1703     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1704 #else
1705     do
1706     {
1707         old = *list;
1708         if (!(entry = old.s.Next.Next)) return NULL;
1709         /* entry could be deleted by another thread */
1710         __TRY
1711         {
1712             new.s.Next.Next = entry->Next;
1713             new.s.Depth = old.s.Depth - 1;
1714             new.s.Sequence = old.s.Sequence + 1;
1715         }
1716         __EXCEPT_PAGE_FAULT
1717         {
1718         }
1719         __ENDTRY
1720     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1721                                           old.Alignment) != old.Alignment);
1722 #endif
1723     return entry;
1724 }
1725
1726 /*************************************************************************
1727  * RtlInterlockedPushListSListEx   [NTDLL.@]
1728  */
1729 PSLIST_ENTRY WINAPI RtlInterlockedPushListSListEx(PSLIST_HEADER list, PSLIST_ENTRY first,
1730                                                   PSLIST_ENTRY last, ULONG count)
1731 {
1732     SLIST_HEADER old, new;
1733
1734 #ifdef _WIN64
1735     new.Header16.NextEntry = (ULONG_PTR)first >> 4;
1736     do
1737     {
1738         old = *list;
1739         new.Header16.Depth = old.Header16.Depth + count;
1740         new.Header16.Sequence = old.Header16.Sequence + 1;
1741         last->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1742     } while (!InterlockedCompareExchange128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
1743     return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
1744 #else
1745     new.s.Next.Next = first;
1746     do
1747     {
1748         old = *list;
1749         new.s.Depth = old.s.Depth + count;
1750         new.s.Sequence = old.s.Sequence + 1;
1751         last->Next = old.s.Next.Next;
1752     } while (InterlockedCompareExchange64((__int64 *)&list->Alignment, new.Alignment,
1753                                           old.Alignment) != old.Alignment);
1754     return old.s.Next.Next;
1755 #endif
1756 }
1757
1758 /*************************************************************************
1759  * RtlInterlockedPushListSList   [NTDLL.@]
1760  */
1761 DEFINE_FASTCALL_WRAPPER(RtlInterlockedPushListSList, 16)
1762 PSLIST_ENTRY FASTCALL RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
1763                                                   PSLIST_ENTRY last, ULONG count)
1764 {
1765     return RtlInterlockedPushListSListEx(list, first, last, count);
1766 }
1767
1768 /******************************************************************************
1769  *  RtlGetCompressionWorkSpaceSize              [NTDLL.@]
1770  */
1771 NTSTATUS WINAPI RtlGetCompressionWorkSpaceSize(USHORT format, PULONG compress_workspace,
1772                                                PULONG decompress_workspace)
1773 {
1774     FIXME("0x%04x, %p, %p: semi-stub\n", format, compress_workspace, decompress_workspace);
1775
1776     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
1777     {
1778         case COMPRESSION_FORMAT_LZNT1:
1779             if (compress_workspace)
1780             {
1781                 /* FIXME: The current implementation of RtlCompressBuffer does not use a
1782                  * workspace buffer, but Windows applications might expect a nonzero value. */
1783                 *compress_workspace = 16;
1784             }
1785             if (decompress_workspace)
1786                 *decompress_workspace = 0x1000;
1787             return STATUS_SUCCESS;
1788
1789         case COMPRESSION_FORMAT_NONE:
1790         case COMPRESSION_FORMAT_DEFAULT:
1791             return STATUS_INVALID_PARAMETER;
1792
1793         default:
1794             FIXME("format %u not implemented\n", format);
1795             return STATUS_UNSUPPORTED_COMPRESSION;
1796     }
1797 }
1798
1799 /* compress data using LZNT1, currently only a stub */
1800 static NTSTATUS lznt1_compress(UCHAR *src, ULONG src_size, UCHAR *dst, ULONG dst_size,
1801                                ULONG chunk_size, ULONG *final_size, UCHAR *workspace)
1802 {
1803     UCHAR *src_cur = src, *src_end = src + src_size;
1804     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1805     ULONG block_size;
1806
1807     while (src_cur < src_end)
1808     {
1809         /* determine size of current chunk */
1810         block_size = min(0x1000, src_end - src_cur);
1811         if (dst_cur + sizeof(WORD) + block_size > dst_end)
1812             return STATUS_BUFFER_TOO_SMALL;
1813
1814         /* write (uncompressed) chunk header */
1815         *(WORD *)dst_cur = 0x3000 | (block_size - 1);
1816         dst_cur += sizeof(WORD);
1817
1818         /* write chunk content */
1819         memcpy(dst_cur, src_cur, block_size);
1820         dst_cur += block_size;
1821         src_cur += block_size;
1822     }
1823
1824     if (final_size)
1825         *final_size = dst_cur - dst;
1826
1827     return STATUS_SUCCESS;
1828 }
1829
1830 /******************************************************************************
1831  *  RtlCompressBuffer           [NTDLL.@]
1832  */
1833 NTSTATUS WINAPI RtlCompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
1834                                   PUCHAR compressed, ULONG compressed_size, ULONG chunk_size,
1835                                   PULONG final_size, PVOID workspace)
1836 {
1837     FIXME("0x%04x, %p, %u, %p, %u, %u, %p, %p: semi-stub\n", format, uncompressed,
1838           uncompressed_size, compressed, compressed_size, chunk_size, final_size, workspace);
1839
1840     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
1841     {
1842         case COMPRESSION_FORMAT_LZNT1:
1843             return lznt1_compress(uncompressed, uncompressed_size, compressed,
1844                                   compressed_size, chunk_size, final_size, workspace);
1845
1846         case COMPRESSION_FORMAT_NONE:
1847         case COMPRESSION_FORMAT_DEFAULT:
1848             return STATUS_INVALID_PARAMETER;
1849
1850         default:
1851             FIXME("format %u not implemented\n", format);
1852             return STATUS_UNSUPPORTED_COMPRESSION;
1853     }
1854 }
1855
1856 /* decompress a single LZNT1 chunk */
1857 static UCHAR *lznt1_decompress_chunk(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size)
1858 {
1859     UCHAR *src_cur = src, *src_end = src + src_size;
1860     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1861     ULONG displacement_bits, length_bits;
1862     ULONG code_displacement, code_length;
1863     WORD flags, code;
1864
1865     while (src_cur < src_end && dst_cur < dst_end)
1866     {
1867         flags = 0x8000 | *src_cur++;
1868         while ((flags & 0xff00) && src_cur < src_end)
1869         {
1870             if (flags & 1)
1871             {
1872                 /* backwards reference */
1873                 if (src_cur + sizeof(WORD) > src_end)
1874                     return NULL;
1875
1876                 code = *(WORD *)src_cur;
1877                 src_cur += sizeof(WORD);
1878
1879                 /* find length / displacement bits */
1880                 for (displacement_bits = 12; displacement_bits > 4; displacement_bits--)
1881                     if ((1 << (displacement_bits - 1)) < dst_cur - dst) break;
1882
1883                 length_bits       = 16 - displacement_bits;
1884                 code_length       = (code & ((1 << length_bits) - 1)) + 3;
1885                 code_displacement = (code >> length_bits) + 1;
1886
1887                 if (dst_cur < dst + code_displacement)
1888                     return NULL;
1889
1890                 /* copy bytes of chunk - we can't use memcpy() since source and dest can
1891                  * be overlapping, and the same bytes can be repeated over and over again */
1892                 while (code_length--)
1893                 {
1894                     if (dst_cur >= dst_end) return dst_cur;
1895                     *dst_cur = *(dst_cur - code_displacement);
1896                     dst_cur++;
1897                 }
1898             }
1899             else
1900             {
1901                 /* uncompressed data */
1902                 if (dst_cur >= dst_end) return dst_cur;
1903                 *dst_cur++ = *src_cur++;
1904             }
1905             flags >>= 1;
1906         }
1907     }
1908
1909     return dst_cur;
1910 }
1911
1912 /* decompress data encoded with LZNT1 */
1913 static NTSTATUS lznt1_decompress(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size,
1914                                  ULONG offset, ULONG *final_size, UCHAR *workspace)
1915 {
1916     UCHAR *src_cur = src, *src_end = src + src_size;
1917     UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
1918     ULONG chunk_size, block_size;
1919     WORD chunk_header;
1920     UCHAR *ptr;
1921
1922     if (src_cur + sizeof(WORD) > src_end)
1923         return STATUS_BAD_COMPRESSION_BUFFER;
1924
1925     /* skip over chunks with a distance >= 0x1000 to the destination offset */
1926     while (offset >= 0x1000 && src_cur + sizeof(WORD) <= src_end)
1927     {
1928         chunk_header = *(WORD *)src_cur;
1929         src_cur += sizeof(WORD);
1930         if (!chunk_header) goto out;
1931         chunk_size = (chunk_header & 0xfff) + 1;
1932
1933         if (src_cur + chunk_size > src_end)
1934             return STATUS_BAD_COMPRESSION_BUFFER;
1935
1936         src_cur += chunk_size;
1937         offset  -= 0x1000;
1938     }
1939
1940     /* handle partially included chunk */
1941     if (offset && src_cur + sizeof(WORD) <= src_end)
1942     {
1943         chunk_header = *(WORD *)src_cur;
1944         src_cur += sizeof(WORD);
1945         if (!chunk_header) goto out;
1946         chunk_size = (chunk_header & 0xfff) + 1;
1947
1948         if (src_cur + chunk_size > src_end)
1949             return STATUS_BAD_COMPRESSION_BUFFER;
1950
1951         if (dst_cur >= dst_end)
1952             goto out;
1953
1954         if (chunk_header & 0x8000)
1955         {
1956             /* compressed chunk */
1957             if (!workspace) return STATUS_ACCESS_VIOLATION;
1958             ptr = lznt1_decompress_chunk(workspace, 0x1000, src_cur, chunk_size);
1959             if (!ptr) return STATUS_BAD_COMPRESSION_BUFFER;
1960             if (ptr - workspace > offset)
1961             {
1962                 block_size = min((ptr - workspace) - offset, dst_end - dst_cur);
1963                 memcpy(dst_cur, workspace + offset, block_size);
1964                 dst_cur += block_size;
1965             }
1966         }
1967         else
1968         {
1969             /* uncompressed chunk */
1970             if (chunk_size > offset)
1971             {
1972                 block_size = min(chunk_size - offset, dst_end - dst_cur);
1973                 memcpy(dst_cur, src_cur + offset, block_size);
1974                 dst_cur += block_size;
1975             }
1976         }
1977
1978         src_cur += chunk_size;
1979     }
1980
1981     /* handle remaining chunks */
1982     while (src_cur + sizeof(WORD) <= src_end)
1983     {
1984         chunk_header = *(WORD *)src_cur;
1985         src_cur += sizeof(WORD);
1986         if (!chunk_header) goto out;
1987         chunk_size = (chunk_header & 0xfff) + 1;
1988
1989         if (src_cur + chunk_size > src_end)
1990             return STATUS_BAD_COMPRESSION_BUFFER;
1991
1992         /* fill space with padding when the previous chunk was decompressed
1993          * to less than 4096 bytes. no padding is needed for the last chunk
1994          * or when the next chunk is truncated */
1995         block_size = ((dst_cur - dst) + offset) & 0xfff;
1996         if (block_size)
1997         {
1998             block_size = 0x1000 - block_size;
1999             if (dst_cur + block_size >= dst_end)
2000                 goto out;
2001             memset(dst_cur, 0, block_size);
2002             dst_cur += block_size;
2003         }
2004
2005         if (dst_cur >= dst_end)
2006             goto out;
2007
2008         if (chunk_header & 0x8000)
2009         {
2010             /* compressed chunk */
2011             dst_cur = lznt1_decompress_chunk(dst_cur, dst_end - dst_cur, src_cur, chunk_size);
2012             if (!dst_cur) return STATUS_BAD_COMPRESSION_BUFFER;
2013         }
2014         else
2015         {
2016             /* uncompressed chunk */
2017             block_size = min(chunk_size, dst_end - dst_cur);
2018             memcpy(dst_cur, src_cur, block_size);
2019             dst_cur += block_size;
2020         }
2021
2022         src_cur += chunk_size;
2023     }
2024
2025 out:
2026     if (final_size)
2027         *final_size = dst_cur - dst;
2028
2029     return STATUS_SUCCESS;
2030
2031 }
2032
2033 /******************************************************************************
2034  *  RtlDecompressFragment       [NTDLL.@]
2035  */
2036 NTSTATUS WINAPI RtlDecompressFragment(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2037                                PUCHAR compressed, ULONG compressed_size, ULONG offset,
2038                                PULONG final_size, PVOID workspace)
2039 {
2040     TRACE("0x%04x, %p, %u, %p, %u, %u, %p, %p\n", format, uncompressed,
2041           uncompressed_size, compressed, compressed_size, offset, final_size, workspace);
2042
2043     switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
2044     {
2045         case COMPRESSION_FORMAT_LZNT1:
2046             return lznt1_decompress(uncompressed, uncompressed_size, compressed,
2047                                     compressed_size, offset, final_size, workspace);
2048
2049         case COMPRESSION_FORMAT_NONE:
2050         case COMPRESSION_FORMAT_DEFAULT:
2051             return STATUS_INVALID_PARAMETER;
2052
2053         default:
2054             FIXME("format %u not implemented\n", format);
2055             return STATUS_UNSUPPORTED_COMPRESSION;
2056     }
2057 }
2058
2059
2060 /******************************************************************************
2061  *  RtlDecompressBuffer         [NTDLL.@]
2062  */
2063 NTSTATUS WINAPI RtlDecompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
2064                                     PUCHAR compressed, ULONG compressed_size, PULONG final_size)
2065 {
2066     TRACE("0x%04x, %p, %u, %p, %u, %p\n", format, uncompressed,
2067         uncompressed_size, compressed, compressed_size, final_size);
2068
2069     return RtlDecompressFragment(format, uncompressed, uncompressed_size,
2070                                  compressed, compressed_size, 0, final_size, NULL);
2071 }
2072
2073 /***********************************************************************
2074  *  RtlSetThreadErrorMode       [NTDLL.@]
2075  *
2076  * Set the thread local error mode.
2077  *
2078  * PARAMS
2079  *  mode    [I] The new error mode
2080  *  oldmode [O] Destination of the old error mode (may be NULL)
2081  *
2082  * RETURNS
2083  *  Success: STATUS_SUCCESS
2084  *  Failure: STATUS_INVALID_PARAMETER_1
2085  */
2086 NTSTATUS WINAPI RtlSetThreadErrorMode( DWORD mode, LPDWORD oldmode )
2087 {
2088     if (mode & ~0x70)
2089         return STATUS_INVALID_PARAMETER_1;
2090
2091     if (oldmode)
2092         *oldmode = NtCurrentTeb()->HardErrorDisabled;
2093
2094     NtCurrentTeb()->HardErrorDisabled = mode;
2095     return STATUS_SUCCESS;
2096 }
2097
2098 /***********************************************************************
2099  *  RtlGetThreadErrorMode       [NTDLL.@]
2100  *
2101  * Get the thread local error mode.
2102  *
2103  * PARAMS
2104  *  None.
2105  *
2106  * RETURNS
2107  *  The current thread local error mode.
2108  */
2109 DWORD WINAPI RtlGetThreadErrorMode( void )
2110 {
2111     return NtCurrentTeb()->HardErrorDisabled;
2112 }
2113
2114 /******************************************************************************
2115  * RtlGetCurrentTransaction [NTDLL.@]
2116  */
2117 HANDLE WINAPI RtlGetCurrentTransaction(void)
2118 {
2119     FIXME("() :stub\n");
2120     return NULL;
2121 }
2122
2123 /******************************************************************************
2124  * RtlSetCurrentTransaction [NTDLL.@]
2125  */
2126 BOOL WINAPI RtlSetCurrentTransaction(HANDLE new_transaction)
2127 {
2128     FIXME("(%p) :stub\n", new_transaction);
2129     return FALSE;
2130 }
2131
2132 /**********************************************************************
2133  *           RtlGetCurrentProcessorNumberEx [NTDLL.@]
2134  */
2135 void WINAPI RtlGetCurrentProcessorNumberEx(PROCESSOR_NUMBER *processor)
2136 {
2137     FIXME("(%p) :semi-stub\n", processor);
2138     processor->Group = 0;
2139     processor->Number = NtGetCurrentProcessorNumber();
2140     processor->Reserved = 0;
2141 }
2142
2143 /***********************************************************************
2144  *           RtlIsProcessorFeaturePresent [NTDLL.@]
2145  */
2146 BOOLEAN WINAPI RtlIsProcessorFeaturePresent( UINT feature )
2147 {
2148     return feature < PROCESSOR_FEATURE_MAX && user_shared_data->ProcessorFeatures[feature];
2149 }
2150
2151 /***********************************************************************
2152  *           RtlInitializeGenericTableAvl  (NTDLL.@)
2153  */
2154 void WINAPI RtlInitializeGenericTableAvl(PRTL_AVL_TABLE table, PRTL_AVL_COMPARE_ROUTINE compare,
2155                                          PRTL_AVL_ALLOCATE_ROUTINE allocate, PRTL_AVL_FREE_ROUTINE free, void *context)
2156 {
2157     FIXME("%p %p %p %p %p: stub\n", table, compare, allocate, free, context);
2158 }
2159
2160 /***********************************************************************
2161  *           RtlInsertElementGenericTableAvl  (NTDLL.@)
2162  */
2163 void WINAPI RtlInsertElementGenericTableAvl(PRTL_AVL_TABLE table, void *buffer, ULONG size, BOOL *element)
2164 {
2165     FIXME("%p %p %u %p: stub\n", table, buffer, size, element);
2166 }
2167
2168 /*********************************************************************
2169  *           RtlQueryPackageIdentity [NTDLL.@]
2170  */
2171 NTSTATUS WINAPI RtlQueryPackageIdentity(HANDLE token, WCHAR *fullname, SIZE_T *fullname_size,
2172                                         WCHAR *appid, SIZE_T *appid_size, BOOLEAN *packaged)
2173 {
2174     FIXME("(%p, %p, %p, %p, %p, %p): stub\n", token, fullname, fullname_size, appid, appid_size, packaged);
2175     return STATUS_NOT_FOUND;
2176 }
2177
2178 /*********************************************************************
2179  *           RtlQueryProcessPlaceholderCompatibilityMode [NTDLL.@]
2180  */
2181 char WINAPI RtlQueryProcessPlaceholderCompatibilityMode(void)
2182 {
2183     FIXME("stub\n");
2184     return PHCM_APPLICATION_DEFAULT;
2185 }