dlls/rpcrt4/rpcrt4_main.c

   1 /*
   2  *  RPCRT4
   3  *
   4  * Copyright 2000 Huw D M Davies for CodeWeavers
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  *
  20  * WINE RPC TODO's (and a few TODONT's)
  21  *
  22  * - Statistics: we are supposed to be keeping various counters.  we aren't.
  23  *
  24  * - Async RPC: Unimplemented.
  25  *
  26  * - The NT "ports" API, aka LPC.  Greg claims this is on his radar.  Might (or
  27  *   might not) enable users to get some kind of meaningful result out of
  28  *   NT-based native rpcrt4's.  Commonly-used transport for self-to-self RPC's.
  29  */
  30
  31 #include "config.h"
  32
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include "ntstatus.h"
  39 #define WIN32_NO_STATUS
  40 #include "windef.h"
  41 #include "winerror.h"
  42 #include "winbase.h"
  43 #include "winuser.h"
  44 #include "winnt.h"
  45 #include "winternl.h"
  46 #include "iptypes.h"
  47 #include "iphlpapi.h"
  48 #include "wine/unicode.h"
  49 #include "rpc.h"
  50
  51 #include "ole2.h"
  52 #include "rpcndr.h"
  53 #include "rpcproxy.h"
  54
  55 #include "rpc_binding.h"
  56 #include "rpcss_np_client.h"
  57
  58 #include "wine/debug.h"
  59
  60 WINE_DEFAULT_DEBUG_CHANNEL(rpc);
  61
  62 static UUID uuid_nil;
  63 static HANDLE master_mutex;
  64
  65 HANDLE RPCRT4_GetMasterMutex(void)
  66 {
  67     return master_mutex;
  68 }
  69
  70 static CRITICAL_SECTION uuid_cs;
  71 static CRITICAL_SECTION_DEBUG critsect_debug =
  72 {
  73     0, 0, &uuid_cs,
  74     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  75       0, 0, { (DWORD_PTR)(__FILE__ ": uuid_cs") }
  76 };
  77 static CRITICAL_SECTION uuid_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
  78
  79 static CRITICAL_SECTION threaddata_cs;
  80 static CRITICAL_SECTION_DEBUG threaddata_cs_debug =
  81 {
  82     0, 0, &threaddata_cs,
  83     { &threaddata_cs_debug.ProcessLocksList, &threaddata_cs_debug.ProcessLocksList },
  84       0, 0, { (DWORD_PTR)(__FILE__ ": threaddata_cs") }
  85 };
  86 static CRITICAL_SECTION threaddata_cs = { &threaddata_cs_debug, -1, 0, 0, 0, 0 };
  87
  88 struct list threaddata_list = LIST_INIT(threaddata_list);
  89
  90 struct context_handle_list
  91 {
  92     struct context_handle_list *next;
  93     NDR_SCONTEXT context_handle;
  94 };
  95
  96 struct threaddata
  97 {
  98     struct list entry;
  99     CRITICAL_SECTION cs;
 100     DWORD thread_id;
 101     RpcConnection *connection;
 102     RpcBinding *server_binding;
 103     struct context_handle_list *context_handle_list;
 104 };
 105
 106 /***********************************************************************
 107  * DllMain
 108  *
 109  * PARAMS
 110  *     hinstDLL    [I] handle to the DLL's instance
 111  *     fdwReason   [I]
 112  *     lpvReserved [I] reserved, must be NULL
 113  *
 114  * RETURNS
 115  *     Success: TRUE
 116  *     Failure: FALSE
 117  */
 118
 119 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 120 {
 121     struct threaddata *tdata;
 122
 123     switch (fdwReason) {
 124     case DLL_PROCESS_ATTACH:
 125         master_mutex = CreateMutexA( NULL, FALSE, RPCSS_MASTER_MUTEX_NAME);
 126         if (!master_mutex)
 127           ERR("Failed to create master mutex\n");
 128         break;
 129
 130     case DLL_THREAD_DETACH:
 131         tdata = NtCurrentTeb()->ReservedForNtRpc;
 132         if (tdata)
 133         {
 134             EnterCriticalSection(&threaddata_cs);
 135             list_remove(&tdata->entry);
 136             LeaveCriticalSection(&threaddata_cs);
 137
 138             DeleteCriticalSection(&tdata->cs);
 139             if (tdata->connection)
 140                 ERR("tdata->connection should be NULL but is still set to %p\n", tdata->connection);
 141             if (tdata->server_binding)
 142                 ERR("tdata->server_binding should be NULL but is still set to %p\n", tdata->server_binding);
 143             HeapFree(GetProcessHeap(), 0, tdata);
 144         }
 145         break;
 146
 147     case DLL_PROCESS_DETACH:
 148         CloseHandle(master_mutex);
 149         master_mutex = NULL;
 150         break;
 151     }
 152
 153     return TRUE;
 154 }
 155
 156 /*************************************************************************
 157  *           RpcStringFreeA   [RPCRT4.@]
 158  *
 159  * Frees a character string allocated by the RPC run-time library.
 160  *
 161  * RETURNS
 162  *
 163  *  S_OK if successful.
 164  */
 165 RPC_STATUS WINAPI RpcStringFreeA(RPC_CSTR* String)
 166 {
 167   HeapFree( GetProcessHeap(), 0, *String);
 168
 169   return RPC_S_OK;
 170 }
 171
 172 /*************************************************************************
 173  *           RpcStringFreeW   [RPCRT4.@]
 174  *
 175  * Frees a character string allocated by the RPC run-time library.
 176  *
 177  * RETURNS
 178  *
 179  *  S_OK if successful.
 180  */
 181 RPC_STATUS WINAPI RpcStringFreeW(RPC_WSTR* String)
 182 {
 183   HeapFree( GetProcessHeap(), 0, *String);
 184
 185   return RPC_S_OK;
 186 }
 187
 188 /*************************************************************************
 189  *           RpcRaiseException   [RPCRT4.@]
 190  *
 191  * Raises an exception.
 192  */
 193 void DECLSPEC_NORETURN WINAPI RpcRaiseException(RPC_STATUS exception)
 194 {
 195   /* shouldn't return */
 196   RaiseException(exception, 0, 0, NULL);
 197   ERR("handler continued execution\n");
 198   ExitProcess(1);
 199 }
 200
 201 /*************************************************************************
 202  * UuidCompare [RPCRT4.@]
 203  *
 204  * PARAMS
 205  *     UUID *Uuid1        [I] Uuid to compare
 206  *     UUID *Uuid2        [I] Uuid to compare
 207  *     RPC_STATUS *Status [O] returns RPC_S_OK
 208  *
 209  * RETURNS
 210  *    -1  if Uuid1 is less than Uuid2
 211  *     0  if Uuid1 and Uuid2 are equal
 212  *     1  if Uuid1 is greater than Uuid2
 213  */
 214 int WINAPI UuidCompare(UUID *Uuid1, UUID *Uuid2, RPC_STATUS *Status)
 215 {
 216   int i;
 217
 218   TRACE("(%s,%s)\n", debugstr_guid(Uuid1), debugstr_guid(Uuid2));
 219
 220   *Status = RPC_S_OK;
 221
 222   if (!Uuid1) Uuid1 = &uuid_nil;
 223   if (!Uuid2) Uuid2 = &uuid_nil;
 224
 225   if (Uuid1 == Uuid2) return 0;
 226
 227   if (Uuid1->Data1 != Uuid2->Data1)
 228     return Uuid1->Data1 < Uuid2->Data1 ? -1 : 1;
 229
 230   if (Uuid1->Data2 != Uuid2->Data2)
 231     return Uuid1->Data2 < Uuid2->Data2 ? -1 : 1;
 232
 233   if (Uuid1->Data3 != Uuid2->Data3)
 234     return Uuid1->Data3 < Uuid2->Data3 ? -1 : 1;
 235
 236   for (i = 0; i < 8; i++) {
 237     if (Uuid1->Data4[i] < Uuid2->Data4[i])
 238       return -1;
 239     if (Uuid1->Data4[i] > Uuid2->Data4[i])
 240       return 1;
 241   }
 242
 243   return 0;
 244 }
 245
 246 /*************************************************************************
 247  * UuidEqual [RPCRT4.@]
 248  *
 249  * PARAMS
 250  *     UUID *Uuid1        [I] Uuid to compare
 251  *     UUID *Uuid2        [I] Uuid to compare
 252  *     RPC_STATUS *Status [O] returns RPC_S_OK
 253  *
 254  * RETURNS
 255  *     TRUE/FALSE
 256  */
 257 int WINAPI UuidEqual(UUID *Uuid1, UUID *Uuid2, RPC_STATUS *Status)
 258 {
 259   TRACE("(%s,%s)\n", debugstr_guid(Uuid1), debugstr_guid(Uuid2));
 260   return !UuidCompare(Uuid1, Uuid2, Status);
 261 }
 262
 263 /*************************************************************************
 264  * UuidIsNil [RPCRT4.@]
 265  *
 266  * PARAMS
 267  *     UUID *Uuid         [I] Uuid to compare
 268  *     RPC_STATUS *Status [O] retuns RPC_S_OK
 269  *
 270  * RETURNS
 271  *     TRUE/FALSE
 272  */
 273 int WINAPI UuidIsNil(UUID *Uuid, RPC_STATUS *Status)
 274 {
 275   TRACE("(%s)\n", debugstr_guid(Uuid));
 276   if (!Uuid) return TRUE;
 277   return !UuidCompare(Uuid, &uuid_nil, Status);
 278 }
 279
 280  /*************************************************************************
 281  * UuidCreateNil [RPCRT4.@]
 282  *
 283  * PARAMS
 284  *     UUID *Uuid [O] returns a nil UUID
 285  *
 286  * RETURNS
 287  *     RPC_S_OK
 288  */
 289 RPC_STATUS WINAPI UuidCreateNil(UUID *Uuid)
 290 {
 291   *Uuid = uuid_nil;
 292   return RPC_S_OK;
 293 }
 294
 295 /* Number of 100ns ticks per clock tick. To be safe, assume that the clock
 296    resolution is at least 1000 * 100 * (1/1000000) = 1/10 of a second */
 297 #define TICKS_PER_CLOCK_TICK 1000
 298 #define SECSPERDAY  86400
 299 #define TICKSPERSEC 10000000
 300 /* UUID system time starts at October 15, 1582 */
 301 #define SECS_15_OCT_1582_TO_1601  ((17 + 30 + 31 + 365 * 18 + 5) * SECSPERDAY)
 302 #define TICKS_15_OCT_1582_TO_1601 ((ULONGLONG)SECS_15_OCT_1582_TO_1601 * TICKSPERSEC)
 303
 304 static void RPC_UuidGetSystemTime(ULONGLONG *time)
 305 {
 306     FILETIME ft;
 307
 308     GetSystemTimeAsFileTime(&ft);
 309
 310     *time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
 311     *time += TICKS_15_OCT_1582_TO_1601;
 312 }
 313
 314 /* Assume that a hardware address is at least 6 bytes long */
 315 #define ADDRESS_BYTES_NEEDED 6
 316
 317 static RPC_STATUS RPC_UuidGetNodeAddress(BYTE *address)
 318 {
 319     int i;
 320     DWORD status = RPC_S_OK;
 321
 322     ULONG buflen = sizeof(IP_ADAPTER_INFO);
 323     PIP_ADAPTER_INFO adapter = HeapAlloc(GetProcessHeap(), 0, buflen);
 324
 325     if (GetAdaptersInfo(adapter, &buflen) == ERROR_BUFFER_OVERFLOW) {
 326         HeapFree(GetProcessHeap(), 0, adapter);
 327         adapter = HeapAlloc(GetProcessHeap(), 0, buflen);
 328     }
 329
 330     if (GetAdaptersInfo(adapter, &buflen) == NO_ERROR) {
 331         for (i = 0; i < ADDRESS_BYTES_NEEDED; i++) {
 332             address[i] = adapter->Address[i];
 333         }
 334     }
 335     /* We can't get a hardware address, just use random numbers.
 336        Set the multicast bit to prevent conflicts with real cards. */
 337     else {
 338         for (i = 0; i < ADDRESS_BYTES_NEEDED; i++) {
 339             address[i] = rand() & 0xff;
 340         }
 341
 342         address[0] |= 0x01;
 343         status = RPC_S_UUID_LOCAL_ONLY;
 344     }
 345
 346     HeapFree(GetProcessHeap(), 0, adapter);
 347     return status;
 348 }
 349
 350 /*************************************************************************
 351  *           UuidCreate   [RPCRT4.@]
 352  *
 353  * Creates a 128bit UUID.
 354  *
 355  * RETURNS
 356  *
 357  *  RPC_S_OK if successful.
 358  *  RPC_S_UUID_LOCAL_ONLY if UUID is only locally unique.
 359  *
 360  *  FIXME: No compensation for changes across reloading
 361  *         this dll or across reboots (e.g. clock going
 362  *         backwards and swapped network cards). The RFC
 363  *         suggests using NVRAM for storing persistent
 364  *         values.
 365  */
 366 RPC_STATUS WINAPI UuidCreate(UUID *Uuid)
 367 {
 368     static int initialised, count;
 369
 370     ULONGLONG time;
 371     static ULONGLONG timelast;
 372     static WORD sequence;
 373
 374     static DWORD status;
 375     static BYTE address[MAX_ADAPTER_ADDRESS_LENGTH];
 376
 377     EnterCriticalSection(&uuid_cs);
 378
 379     if (!initialised) {
 380         RPC_UuidGetSystemTime(&timelast);
 381         count = TICKS_PER_CLOCK_TICK;
 382
 383         sequence = ((rand() & 0xff) << 8) + (rand() & 0xff);
 384         sequence &= 0x1fff;
 385
 386         status = RPC_UuidGetNodeAddress(address);
 387         initialised = 1;
 388     }
 389
 390     /* Generate time element of the UUID. Account for going faster
 391        than our clock as well as the clock going backwards. */
 392     while (1) {
 393         RPC_UuidGetSystemTime(&time);
 394         if (time > timelast) {
 395             count = 0;
 396             break;
 397         }
 398         if (time < timelast) {
 399             sequence = (sequence + 1) & 0x1fff;
 400             count = 0;
 401             break;
 402         }
 403         if (count < TICKS_PER_CLOCK_TICK) {
 404             count++;
 405             break;
 406         }
 407     }
 408
 409     timelast = time;
 410     time += count;
 411
 412     /* Pack the information into the UUID structure. */
 413
 414     Uuid->Data1  = (unsigned long)(time & 0xffffffff);
 415     Uuid->Data2  = (unsigned short)((time >> 32) & 0xffff);
 416     Uuid->Data3  = (unsigned short)((time >> 48) & 0x0fff);
 417
 418     /* This is a version 1 UUID */
 419     Uuid->Data3 |= (1 << 12);
 420
 421     Uuid->Data4[0]  = sequence & 0xff;
 422     Uuid->Data4[1]  = (sequence & 0x3f00) >> 8;
 423     Uuid->Data4[1] |= 0x80;
 424
 425     Uuid->Data4[2] = address[0];
 426     Uuid->Data4[3] = address[1];
 427     Uuid->Data4[4] = address[2];
 428     Uuid->Data4[5] = address[3];
 429     Uuid->Data4[6] = address[4];
 430     Uuid->Data4[7] = address[5];
 431
 432     LeaveCriticalSection(&uuid_cs);
 433
 434     TRACE("%s\n", debugstr_guid(Uuid));
 435
 436     return status;
 437 }
 438
 439 /*************************************************************************
 440  *           UuidCreateSequential   [RPCRT4.@]
 441  *
 442  * Creates a 128bit UUID.
 443  *
 444  * RETURNS
 445  *
 446  *  RPC_S_OK if successful.
 447  *  RPC_S_UUID_LOCAL_ONLY if UUID is only locally unique.
 448  *
 449  */
 450 RPC_STATUS WINAPI UuidCreateSequential(UUID *Uuid)
 451 {
 452    return UuidCreate(Uuid);
 453 }
 454
 455
 456 /*************************************************************************
 457  *           UuidHash   [RPCRT4.@]
 458  *
 459  * Generates a hash value for a given UUID
 460  *
 461  * Code based on FreeDCE implementation
 462  *
 463  */
 464 unsigned short WINAPI UuidHash(UUID *uuid, RPC_STATUS *Status)
 465 {
 466   BYTE *data = (BYTE*)uuid;
 467   short c0 = 0, c1 = 0, x, y;
 468   unsigned int i;
 469
 470   if (!uuid) data = (BYTE*)(uuid = &uuid_nil);
 471
 472   TRACE("(%s)\n", debugstr_guid(uuid));
 473
 474   for (i=0; i<sizeof(UUID); i++) {
 475     c0 += data[i];
 476     c1 += c0;
 477   }
 478
 479   x = -c1 % 255;
 480   if (x < 0) x += 255;
 481
 482   y = (c1 - c0) % 255;
 483   if (y < 0) y += 255;
 484
 485   *Status = RPC_S_OK;
 486   return y*256 + x;
 487 }
 488
 489 /*************************************************************************
 490  *           UuidToStringA   [RPCRT4.@]
 491  *
 492  * Converts a UUID to a string.
 493  *
 494  * UUID format is 8 hex digits, followed by a hyphen then three groups of
 495  * 4 hex digits each followed by a hyphen and then 12 hex digits
 496  *
 497  * RETURNS
 498  *
 499  *  S_OK if successful.
 500  *  S_OUT_OF_MEMORY if unsuccessful.
 501  */
 502 RPC_STATUS WINAPI UuidToStringA(UUID *Uuid, RPC_CSTR* StringUuid)
 503 {
 504   *StringUuid = HeapAlloc( GetProcessHeap(), 0, sizeof(char) * 37);
 505
 506   if(!(*StringUuid))
 507     return RPC_S_OUT_OF_MEMORY;
 508
 509   if (!Uuid) Uuid = &uuid_nil;
 510
 511   sprintf( (char*)*StringUuid, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 512                  Uuid->Data1, Uuid->Data2, Uuid->Data3,
 513                  Uuid->Data4[0], Uuid->Data4[1], Uuid->Data4[2],
 514                  Uuid->Data4[3], Uuid->Data4[4], Uuid->Data4[5],
 515                  Uuid->Data4[6], Uuid->Data4[7] );
 516
 517   return RPC_S_OK;
 518 }
 519
 520 /*************************************************************************
 521  *           UuidToStringW   [RPCRT4.@]
 522  *
 523  * Converts a UUID to a string.
 524  *
 525  *  S_OK if successful.
 526  *  S_OUT_OF_MEMORY if unsuccessful.
 527  */
 528 RPC_STATUS WINAPI UuidToStringW(UUID *Uuid, RPC_WSTR* StringUuid)
 529 {
 530   char buf[37];
 531
 532   if (!Uuid) Uuid = &uuid_nil;
 533
 534   sprintf(buf, "%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 535                Uuid->Data1, Uuid->Data2, Uuid->Data3,
 536                Uuid->Data4[0], Uuid->Data4[1], Uuid->Data4[2],
 537                Uuid->Data4[3], Uuid->Data4[4], Uuid->Data4[5],
 538                Uuid->Data4[6], Uuid->Data4[7] );
 539
 540   *StringUuid = RPCRT4_strdupAtoW(buf);
 541
 542   if(!(*StringUuid))
 543     return RPC_S_OUT_OF_MEMORY;
 544
 545   return RPC_S_OK;
 546 }
 547
 548 static const BYTE hex2bin[] =
 549 {
 550     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x00 */
 551     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x10 */
 552     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x20 */
 553     0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,        /* 0x30 */
 554     0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,  /* 0x40 */
 555     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x50 */
 556     0,10,11,12,13,14,15                     /* 0x60 */
 557 };
 558
 559 /***********************************************************************
 560  *              UuidFromStringA (RPCRT4.@)
 561  */
 562 RPC_STATUS WINAPI UuidFromStringA(RPC_CSTR s, UUID *uuid)
 563 {
 564     int i;
 565
 566     if (!s) return UuidCreateNil( uuid );
 567
 568     if (strlen((char*)s) != 36) return RPC_S_INVALID_STRING_UUID;
 569
 570     if ((s[8]!='-') || (s[13]!='-') || (s[18]!='-') || (s[23]!='-'))
 571         return RPC_S_INVALID_STRING_UUID;
 572
 573     for (i=0; i<36; i++)
 574     {
 575         if ((i == 8)||(i == 13)||(i == 18)||(i == 23)) continue;
 576         if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0')) return RPC_S_INVALID_STRING_UUID;
 577     }
 578
 579     /* in form XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX */
 580
 581     uuid->Data1 = (hex2bin[s[0]] << 28 | hex2bin[s[1]] << 24 | hex2bin[s[2]] << 20 | hex2bin[s[3]] << 16 |
 582                    hex2bin[s[4]] << 12 | hex2bin[s[5]]  << 8 | hex2bin[s[6]]  << 4 | hex2bin[s[7]]);
 583     uuid->Data2 =  hex2bin[s[9]] << 12 | hex2bin[s[10]] << 8 | hex2bin[s[11]] << 4 | hex2bin[s[12]];
 584     uuid->Data3 = hex2bin[s[14]] << 12 | hex2bin[s[15]] << 8 | hex2bin[s[16]] << 4 | hex2bin[s[17]];
 585
 586     /* these are just sequential bytes */
 587     uuid->Data4[0] = hex2bin[s[19]] << 4 | hex2bin[s[20]];
 588     uuid->Data4[1] = hex2bin[s[21]] << 4 | hex2bin[s[22]];
 589     uuid->Data4[2] = hex2bin[s[24]] << 4 | hex2bin[s[25]];
 590     uuid->Data4[3] = hex2bin[s[26]] << 4 | hex2bin[s[27]];
 591     uuid->Data4[4] = hex2bin[s[28]] << 4 | hex2bin[s[29]];
 592     uuid->Data4[5] = hex2bin[s[30]] << 4 | hex2bin[s[31]];
 593     uuid->Data4[6] = hex2bin[s[32]] << 4 | hex2bin[s[33]];
 594     uuid->Data4[7] = hex2bin[s[34]] << 4 | hex2bin[s[35]];
 595     return RPC_S_OK;
 596 }
 597
 598
 599 /***********************************************************************
 600  *              UuidFromStringW (RPCRT4.@)
 601  */
 602 RPC_STATUS WINAPI UuidFromStringW(RPC_WSTR s, UUID *uuid)
 603 {
 604     int i;
 605
 606     if (!s) return UuidCreateNil( uuid );
 607
 608     if (strlenW(s) != 36) return RPC_S_INVALID_STRING_UUID;
 609
 610     if ((s[8]!='-') || (s[13]!='-') || (s[18]!='-') || (s[23]!='-'))
 611         return RPC_S_INVALID_STRING_UUID;
 612
 613     for (i=0; i<36; i++)
 614     {
 615         if ((i == 8)||(i == 13)||(i == 18)||(i == 23)) continue;
 616         if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0')) return RPC_S_INVALID_STRING_UUID;
 617     }
 618
 619     /* in form XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX */
 620
 621     uuid->Data1 = (hex2bin[s[0]] << 28 | hex2bin[s[1]] << 24 | hex2bin[s[2]] << 20 | hex2bin[s[3]] << 16 |
 622                    hex2bin[s[4]] << 12 | hex2bin[s[5]]  << 8 | hex2bin[s[6]]  << 4 | hex2bin[s[7]]);
 623     uuid->Data2 =  hex2bin[s[9]] << 12 | hex2bin[s[10]] << 8 | hex2bin[s[11]] << 4 | hex2bin[s[12]];
 624     uuid->Data3 = hex2bin[s[14]] << 12 | hex2bin[s[15]] << 8 | hex2bin[s[16]] << 4 | hex2bin[s[17]];
 625
 626     /* these are just sequential bytes */
 627     uuid->Data4[0] = hex2bin[s[19]] << 4 | hex2bin[s[20]];
 628     uuid->Data4[1] = hex2bin[s[21]] << 4 | hex2bin[s[22]];
 629     uuid->Data4[2] = hex2bin[s[24]] << 4 | hex2bin[s[25]];
 630     uuid->Data4[3] = hex2bin[s[26]] << 4 | hex2bin[s[27]];
 631     uuid->Data4[4] = hex2bin[s[28]] << 4 | hex2bin[s[29]];
 632     uuid->Data4[5] = hex2bin[s[30]] << 4 | hex2bin[s[31]];
 633     uuid->Data4[6] = hex2bin[s[32]] << 4 | hex2bin[s[33]];
 634     uuid->Data4[7] = hex2bin[s[34]] << 4 | hex2bin[s[35]];
 635     return RPC_S_OK;
 636 }
 637
 638 /***********************************************************************
 639  *              DllRegisterServer (RPCRT4.@)
 640  */
 641
 642 HRESULT WINAPI DllRegisterServer( void )
 643 {
 644     FIXME( "(): stub\n" );
 645     return S_OK;
 646 }
 647
 648 static BOOL RPCRT4_StartRPCSS(void)
 649 {
 650     PROCESS_INFORMATION pi;
 651     STARTUPINFOA si;
 652     static char cmd[6];
 653     BOOL rslt;
 654
 655     ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
 656     ZeroMemory(&si, sizeof(STARTUPINFOA));
 657     si.cb = sizeof(STARTUPINFOA);
 658
 659     /* apparently it's not OK to use a constant string below */
 660     CopyMemory(cmd, "rpcss", 6);
 661
 662     /* FIXME: will this do the right thing when run as a test? */
 663     rslt = CreateProcessA(
 664         NULL,           /* executable */
 665         cmd,            /* command line */
 666         NULL,           /* process security attributes */
 667         NULL,           /* primary thread security attributes */
 668         FALSE,          /* inherit handles */
 669         0,              /* creation flags */
 670         NULL,           /* use parent's environment */
 671         NULL,           /* use parent's current directory */
 672         &si,            /* STARTUPINFO pointer */
 673         &pi             /* PROCESS_INFORMATION */
 674     );
 675
 676     if (rslt) {
 677       CloseHandle(pi.hProcess);
 678       CloseHandle(pi.hThread);
 679     }
 680
 681     return rslt;
 682 }
 683
 684 /***********************************************************************
 685  *           RPCRT4_RPCSSOnDemandCall (internal)
 686  *
 687  * Attempts to send a message to the RPCSS process
 688  * on the local machine, invoking it if necessary.
 689  * For remote RPCSS calls, use.... your imagination.
 690  *
 691  * PARAMS
 692  *     msg             [I] pointer to the RPCSS message
 693  *     vardata_payload [I] pointer vardata portion of the RPCSS message
 694  *     reply           [O] pointer to reply structure
 695  *
 696  * RETURNS
 697  *     TRUE if successful
 698  *     FALSE otherwise
 699  */
 700 BOOL RPCRT4_RPCSSOnDemandCall(PRPCSS_NP_MESSAGE msg, char *vardata_payload, PRPCSS_NP_REPLY reply)
 701 {
 702     HANDLE client_handle;
 703     BOOL ret;
 704     int i, j = 0;
 705
 706     TRACE("(msg == %p, vardata_payload == %p, reply == %p)\n", msg, vardata_payload, reply);
 707
 708     client_handle = RPCRT4_RpcssNPConnect();
 709
 710     while (INVALID_HANDLE_VALUE == client_handle) {
 711         /* start the RPCSS process */
 712         if (!RPCRT4_StartRPCSS()) {
 713             ERR("Unable to start RPCSS process.\n");
 714             return FALSE;
 715         }
 716         /* wait for a connection (w/ periodic polling) */
 717         for (i = 0; i < 60; i++) {
 718             Sleep(200);
 719             client_handle = RPCRT4_RpcssNPConnect();
 720             if (INVALID_HANDLE_VALUE != client_handle) break;
 721         }
 722         /* we are only willing to try twice */
 723         if (j++ >= 1) break;
 724     }
 725
 726     if (INVALID_HANDLE_VALUE == client_handle) {
 727         /* no dice! */
 728         ERR("Unable to connect to RPCSS process!\n");
 729         SetLastError(RPC_E_SERVER_DIED_DNE);
 730         return FALSE;
 731     }
 732
 733     /* great, we're connected.  now send the message */
 734     ret = TRUE;
 735     if (!RPCRT4_SendReceiveNPMsg(client_handle, msg, vardata_payload, reply)) {
 736         ERR("Something is amiss: RPC_SendReceive failed.\n");
 737         ret = FALSE;
 738     }
 739     CloseHandle(client_handle);
 740
 741     return ret;
 742 }
 743
 744 #define MAX_RPC_ERROR_TEXT 256
 745
 746 /******************************************************************************
 747  * DceErrorInqTextW   (rpcrt4.@)
 748  *
 749  * Notes
 750  * 1. On passing a NULL pointer the code does bomb out.
 751  * 2. The size of the required buffer is not defined in the documentation.
 752  *    It appears to be 256.
 753  * 3. The function is defined to return RPC_S_INVALID_ARG but I don't know
 754  *    of any value for which it does.
 755  * 4. The MSDN documentation currently declares that the second argument is
 756  *    unsigned char *, even for the W version.  I don't believe it.
 757  */
 758 RPC_STATUS RPC_ENTRY DceErrorInqTextW (RPC_STATUS e, RPC_WSTR buffer)
 759 {
 760     DWORD count;
 761     count = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM |
 762                 FORMAT_MESSAGE_IGNORE_INSERTS,
 763                 NULL, e, 0, buffer, MAX_RPC_ERROR_TEXT, NULL);
 764     if (!count)
 765     {
 766         count = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM |
 767                 FORMAT_MESSAGE_IGNORE_INSERTS,
 768                 NULL, RPC_S_NOT_RPC_ERROR, 0, buffer, MAX_RPC_ERROR_TEXT, NULL);
 769         if (!count)
 770         {
 771             ERR ("Failed to translate error\n");
 772             return RPC_S_INVALID_ARG;
 773         }
 774     }
 775     return RPC_S_OK;
 776 }
 777
 778 /******************************************************************************
 779  * DceErrorInqTextA   (rpcrt4.@)
 780  */
 781 RPC_STATUS RPC_ENTRY DceErrorInqTextA (RPC_STATUS e, RPC_CSTR buffer)
 782 {
 783     RPC_STATUS status;
 784     WCHAR bufferW [MAX_RPC_ERROR_TEXT];
 785     if ((status = DceErrorInqTextW (e, bufferW)) == RPC_S_OK)
 786     {
 787         if (!WideCharToMultiByte(CP_ACP, 0, bufferW, -1, (LPSTR)buffer, MAX_RPC_ERROR_TEXT,
 788                 NULL, NULL))
 789         {
 790             ERR ("Failed to translate error\n");
 791             status = RPC_S_INVALID_ARG;
 792         }
 793     }
 794     return status;
 795 }
 796
 797 /******************************************************************************
 798  * I_RpcAllocate   (rpcrt4.@)
 799  */
 800 void * WINAPI I_RpcAllocate(unsigned int Size)
 801 {
 802     return HeapAlloc(GetProcessHeap(), 0, Size);
 803 }
 804
 805 /******************************************************************************
 806  * I_RpcFree   (rpcrt4.@)
 807  */
 808 void WINAPI I_RpcFree(void *Object)
 809 {
 810     HeapFree(GetProcessHeap(), 0, Object);
 811 }
 812
 813 /******************************************************************************
 814  * I_RpcMapWin32Status   (rpcrt4.@)
 815  *
 816  * Maps Win32 RPC error codes to NT statuses.
 817  *
 818  * PARAMS
 819  *  status [I] Win32 RPC error code.
 820  *
 821  * RETURNS
 822  *  Appropriate translation into an NT status code.
 823  */
 824 LONG WINAPI I_RpcMapWin32Status(RPC_STATUS status)
 825 {
 826     TRACE("(%ld)\n", status);
 827     switch (status)
 828     {
 829     case ERROR_ACCESS_DENIED: return STATUS_ACCESS_DENIED;
 830     case ERROR_INVALID_HANDLE: return RPC_NT_SS_CONTEXT_MISMATCH;
 831     case ERROR_OUTOFMEMORY: return STATUS_NO_MEMORY;
 832     case ERROR_INVALID_PARAMETER: return STATUS_INVALID_PARAMETER;
 833     case ERROR_INSUFFICIENT_BUFFER: return STATUS_BUFFER_TOO_SMALL;
 834     case ERROR_MAX_THRDS_REACHED: return STATUS_NO_MEMORY;
 835     case ERROR_NOACCESS: return STATUS_ACCESS_VIOLATION;
 836     case ERROR_NOT_ENOUGH_SERVER_MEMORY: return STATUS_INSUFF_SERVER_RESOURCES;
 837     case ERROR_WRONG_PASSWORD: return STATUS_WRONG_PASSWORD;
 838     case ERROR_INVALID_LOGON_HOURS: return STATUS_INVALID_LOGON_HOURS;
 839     case ERROR_PASSWORD_EXPIRED: return STATUS_PASSWORD_EXPIRED;
 840     case ERROR_ACCOUNT_DISABLED: return STATUS_ACCOUNT_DISABLED;
 841     case ERROR_INVALID_SECURITY_DESCR: return STATUS_INVALID_SECURITY_DESCR;
 842     case RPC_S_INVALID_STRING_BINDING: return RPC_NT_INVALID_STRING_BINDING;
 843     case RPC_S_WRONG_KIND_OF_BINDING: return RPC_NT_WRONG_KIND_OF_BINDING;
 844     case RPC_S_INVALID_BINDING: return RPC_NT_INVALID_BINDING;
 845     case RPC_S_PROTSEQ_NOT_SUPPORTED: return RPC_NT_PROTSEQ_NOT_SUPPORTED;
 846     case RPC_S_INVALID_RPC_PROTSEQ: return RPC_NT_INVALID_RPC_PROTSEQ;
 847     case RPC_S_INVALID_STRING_UUID: return RPC_NT_INVALID_STRING_UUID;
 848     case RPC_S_INVALID_ENDPOINT_FORMAT: return RPC_NT_INVALID_ENDPOINT_FORMAT;
 849     case RPC_S_INVALID_NET_ADDR: return RPC_NT_INVALID_NET_ADDR;
 850     case RPC_S_NO_ENDPOINT_FOUND: return RPC_NT_NO_ENDPOINT_FOUND;
 851     case RPC_S_INVALID_TIMEOUT: return RPC_NT_INVALID_TIMEOUT;
 852     case RPC_S_OBJECT_NOT_FOUND: return RPC_NT_OBJECT_NOT_FOUND;
 853     case RPC_S_ALREADY_REGISTERED: return RPC_NT_ALREADY_REGISTERED;
 854     case RPC_S_TYPE_ALREADY_REGISTERED: return RPC_NT_TYPE_ALREADY_REGISTERED;
 855     case RPC_S_ALREADY_LISTENING: return RPC_NT_ALREADY_LISTENING;
 856     case RPC_S_NO_PROTSEQS_REGISTERED: return RPC_NT_NO_PROTSEQS_REGISTERED;
 857     case RPC_S_NOT_LISTENING: return RPC_NT_NOT_LISTENING;
 858     case RPC_S_UNKNOWN_MGR_TYPE: return RPC_NT_UNKNOWN_MGR_TYPE;
 859     case RPC_S_UNKNOWN_IF: return RPC_NT_UNKNOWN_IF;
 860     case RPC_S_NO_BINDINGS: return RPC_NT_NO_BINDINGS;
 861     case RPC_S_NO_PROTSEQS: return RPC_NT_NO_PROTSEQS;
 862     case RPC_S_CANT_CREATE_ENDPOINT: return RPC_NT_CANT_CREATE_ENDPOINT;
 863     case RPC_S_OUT_OF_RESOURCES: return RPC_NT_OUT_OF_RESOURCES;
 864     case RPC_S_SERVER_UNAVAILABLE: return RPC_NT_SERVER_UNAVAILABLE;
 865     case RPC_S_SERVER_TOO_BUSY: return RPC_NT_SERVER_TOO_BUSY;
 866     case RPC_S_INVALID_NETWORK_OPTIONS: return RPC_NT_INVALID_NETWORK_OPTIONS;
 867     case RPC_S_NO_CALL_ACTIVE: return RPC_NT_NO_CALL_ACTIVE;
 868     case RPC_S_CALL_FAILED: return RPC_NT_CALL_FAILED;
 869     case RPC_S_CALL_FAILED_DNE: return RPC_NT_CALL_FAILED_DNE;
 870     case RPC_S_PROTOCOL_ERROR: return RPC_NT_PROTOCOL_ERROR;
 871     case RPC_S_UNSUPPORTED_TRANS_SYN: return RPC_NT_UNSUPPORTED_TRANS_SYN;
 872     case RPC_S_UNSUPPORTED_TYPE: return RPC_NT_UNSUPPORTED_TYPE;
 873     case RPC_S_INVALID_TAG: return RPC_NT_INVALID_TAG;
 874     case RPC_S_INVALID_BOUND: return RPC_NT_INVALID_BOUND;
 875     case RPC_S_NO_ENTRY_NAME: return RPC_NT_NO_ENTRY_NAME;
 876     case RPC_S_INVALID_NAME_SYNTAX: return RPC_NT_INVALID_NAME_SYNTAX;
 877     case RPC_S_UNSUPPORTED_NAME_SYNTAX: return RPC_NT_UNSUPPORTED_NAME_SYNTAX;
 878     case RPC_S_UUID_NO_ADDRESS: return RPC_NT_UUID_NO_ADDRESS;
 879     case RPC_S_DUPLICATE_ENDPOINT: return RPC_NT_DUPLICATE_ENDPOINT;
 880     case RPC_S_UNKNOWN_AUTHN_TYPE: return RPC_NT_UNKNOWN_AUTHN_TYPE;
 881     case RPC_S_MAX_CALLS_TOO_SMALL: return RPC_NT_MAX_CALLS_TOO_SMALL;
 882     case RPC_S_STRING_TOO_LONG: return RPC_NT_STRING_TOO_LONG;
 883     case RPC_S_PROTSEQ_NOT_FOUND: return RPC_NT_PROTSEQ_NOT_FOUND;
 884     case RPC_S_PROCNUM_OUT_OF_RANGE: return RPC_NT_PROCNUM_OUT_OF_RANGE;
 885     case RPC_S_BINDING_HAS_NO_AUTH: return RPC_NT_BINDING_HAS_NO_AUTH;
 886     case RPC_S_UNKNOWN_AUTHN_SERVICE: return RPC_NT_UNKNOWN_AUTHN_SERVICE;
 887     case RPC_S_UNKNOWN_AUTHN_LEVEL: return RPC_NT_UNKNOWN_AUTHN_LEVEL;
 888     case RPC_S_INVALID_AUTH_IDENTITY: return RPC_NT_INVALID_AUTH_IDENTITY;
 889     case RPC_S_UNKNOWN_AUTHZ_SERVICE: return RPC_NT_UNKNOWN_AUTHZ_SERVICE;
 890     case EPT_S_INVALID_ENTRY: return EPT_NT_INVALID_ENTRY;
 891     case EPT_S_CANT_PERFORM_OP: return EPT_NT_CANT_PERFORM_OP;
 892     case EPT_S_NOT_REGISTERED: return EPT_NT_NOT_REGISTERED;
 893     case EPT_S_CANT_CREATE: return EPT_NT_CANT_CREATE;
 894     case RPC_S_NOTHING_TO_EXPORT: return RPC_NT_NOTHING_TO_EXPORT;
 895     case RPC_S_INCOMPLETE_NAME: return RPC_NT_INCOMPLETE_NAME;
 896     case RPC_S_INVALID_VERS_OPTION: return RPC_NT_INVALID_VERS_OPTION;
 897     case RPC_S_NO_MORE_MEMBERS: return RPC_NT_NO_MORE_MEMBERS;
 898     case RPC_S_NOT_ALL_OBJS_UNEXPORTED: return RPC_NT_NOT_ALL_OBJS_UNEXPORTED;
 899     case RPC_S_INTERFACE_NOT_FOUND: return RPC_NT_INTERFACE_NOT_FOUND;
 900     case RPC_S_ENTRY_ALREADY_EXISTS: return RPC_NT_ENTRY_ALREADY_EXISTS;
 901     case RPC_S_ENTRY_NOT_FOUND: return RPC_NT_ENTRY_NOT_FOUND;
 902     case RPC_S_NAME_SERVICE_UNAVAILABLE: return RPC_NT_NAME_SERVICE_UNAVAILABLE;
 903     case RPC_S_INVALID_NAF_ID: return RPC_NT_INVALID_NAF_ID;
 904     case RPC_S_CANNOT_SUPPORT: return RPC_NT_CANNOT_SUPPORT;
 905     case RPC_S_NO_CONTEXT_AVAILABLE: return RPC_NT_NO_CONTEXT_AVAILABLE;
 906     case RPC_S_INTERNAL_ERROR: return RPC_NT_INTERNAL_ERROR;
 907     case RPC_S_ZERO_DIVIDE: return RPC_NT_ZERO_DIVIDE;
 908     case RPC_S_ADDRESS_ERROR: return RPC_NT_ADDRESS_ERROR;
 909     case RPC_S_FP_DIV_ZERO: return RPC_NT_FP_DIV_ZERO;
 910     case RPC_S_FP_UNDERFLOW: return RPC_NT_FP_UNDERFLOW;
 911     case RPC_S_FP_OVERFLOW: return RPC_NT_FP_OVERFLOW;
 912     case RPC_S_CALL_IN_PROGRESS: return RPC_NT_CALL_IN_PROGRESS;
 913     case RPC_S_NO_MORE_BINDINGS: return RPC_NT_NO_MORE_BINDINGS;
 914     case RPC_S_CALL_CANCELLED: return RPC_NT_CALL_CANCELLED;
 915     case RPC_S_INVALID_OBJECT: return RPC_NT_INVALID_OBJECT;
 916     case RPC_S_INVALID_ASYNC_HANDLE: return RPC_NT_INVALID_ASYNC_HANDLE;
 917     case RPC_S_INVALID_ASYNC_CALL: return RPC_NT_INVALID_ASYNC_CALL;
 918     case RPC_S_GROUP_MEMBER_NOT_FOUND: return RPC_NT_GROUP_MEMBER_NOT_FOUND;
 919     case RPC_X_NO_MORE_ENTRIES: return RPC_NT_NO_MORE_ENTRIES;
 920     case RPC_X_SS_CHAR_TRANS_OPEN_FAIL: return RPC_NT_SS_CHAR_TRANS_OPEN_FAIL;
 921     case RPC_X_SS_CHAR_TRANS_SHORT_FILE: return RPC_NT_SS_CHAR_TRANS_SHORT_FILE;
 922     case RPC_X_SS_IN_NULL_CONTEXT: return RPC_NT_SS_IN_NULL_CONTEXT;
 923     case RPC_X_SS_CONTEXT_DAMAGED: return RPC_NT_SS_CONTEXT_DAMAGED;
 924     case RPC_X_SS_HANDLES_MISMATCH: return RPC_NT_SS_HANDLES_MISMATCH;
 925     case RPC_X_SS_CANNOT_GET_CALL_HANDLE: return RPC_NT_SS_CANNOT_GET_CALL_HANDLE;
 926     case RPC_X_NULL_REF_POINTER: return RPC_NT_NULL_REF_POINTER;
 927     case RPC_X_ENUM_VALUE_OUT_OF_RANGE: return RPC_NT_ENUM_VALUE_OUT_OF_RANGE;
 928     case RPC_X_BYTE_COUNT_TOO_SMALL: return RPC_NT_BYTE_COUNT_TOO_SMALL;
 929     case RPC_X_BAD_STUB_DATA: return RPC_NT_BAD_STUB_DATA;
 930     case RPC_X_PIPE_CLOSED: return RPC_NT_PIPE_CLOSED;
 931     case RPC_X_PIPE_DISCIPLINE_ERROR: return RPC_NT_PIPE_DISCIPLINE_ERROR;
 932     case RPC_X_PIPE_EMPTY: return RPC_NT_PIPE_EMPTY;
 933     case ERROR_PASSWORD_MUST_CHANGE: return STATUS_PASSWORD_MUST_CHANGE;
 934     case ERROR_ACCOUNT_LOCKED_OUT: return STATUS_ACCOUNT_LOCKED_OUT;
 935     default: return status;
 936     }
 937 }
 938
 939 /******************************************************************************
 940  * RpcErrorStartEnumeration   (rpcrt4.@)
 941  */
 942 RPC_STATUS RPC_ENTRY RpcErrorStartEnumeration(RPC_ERROR_ENUM_HANDLE* EnumHandle)
 943 {
 944     FIXME("(%p): stub\n", EnumHandle);
 945     return RPC_S_ENTRY_NOT_FOUND;
 946 }
 947
 948 /******************************************************************************
 949  * RpcMgmtSetCancelTimeout   (rpcrt4.@)
 950  */
 951 RPC_STATUS RPC_ENTRY RpcMgmtSetCancelTimeout(LONG Timeout)
 952 {
 953     FIXME("(%d): stub\n", Timeout);
 954     return RPC_S_OK;
 955 }
 956
 957 static struct threaddata *get_or_create_threaddata(void)
 958 {
 959     struct threaddata *tdata = NtCurrentTeb()->ReservedForNtRpc;
 960     if (!tdata)
 961     {
 962         tdata = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*tdata));
 963         if (!tdata) return NULL;
 964
 965         InitializeCriticalSection(&tdata->cs);
 966         tdata->thread_id = GetCurrentThreadId();
 967
 968         EnterCriticalSection(&threaddata_cs);
 969         list_add_tail(&threaddata_list, &tdata->entry);
 970         LeaveCriticalSection(&threaddata_cs);
 971
 972         NtCurrentTeb()->ReservedForNtRpc = tdata;
 973         return tdata;
 974     }
 975     return tdata;
 976 }
 977
 978 void RPCRT4_SetThreadCurrentConnection(RpcConnection *Connection)
 979 {
 980     struct threaddata *tdata = get_or_create_threaddata();
 981     if (!tdata) return;
 982
 983     EnterCriticalSection(&tdata->cs);
 984     tdata->connection = Connection;
 985     LeaveCriticalSection(&tdata->cs);
 986 }
 987
 988 void RPCRT4_SetThreadCurrentCallHandle(RpcBinding *Binding)
 989 {
 990     struct threaddata *tdata = get_or_create_threaddata();
 991     if (!tdata) return;
 992
 993     tdata->server_binding = Binding;
 994 }
 995
 996 RpcBinding *RPCRT4_GetThreadCurrentCallHandle(void)
 997 {
 998     struct threaddata *tdata = get_or_create_threaddata();
 999     if (!tdata) return NULL;
1000
1001     return tdata->server_binding;
1002 }
1003
1004 void RPCRT4_PushThreadContextHandle(NDR_SCONTEXT SContext)
1005 {
1006     struct threaddata *tdata = get_or_create_threaddata();
1007     struct context_handle_list *context_handle_list;
1008
1009     if (!tdata) return;
1010
1011     context_handle_list = HeapAlloc(GetProcessHeap(), 0, sizeof(*context_handle_list));
1012     if (!context_handle_list) return;
1013
1014     context_handle_list->context_handle = SContext;
1015     context_handle_list->next = tdata->context_handle_list;
1016     tdata->context_handle_list = context_handle_list;
1017 }
1018
1019 void RPCRT4_RemoveThreadContextHandle(NDR_SCONTEXT SContext)
1020 {
1021     struct threaddata *tdata = get_or_create_threaddata();
1022     struct context_handle_list *current, *prev;
1023
1024     if (!tdata) return;
1025
1026     for (current = tdata->context_handle_list, prev = NULL; current; prev = current, current = current->next)
1027     {
1028         if (current->context_handle == SContext)
1029         {
1030             if (prev)
1031                 prev->next = current->next;
1032             else
1033                 tdata->context_handle_list = current->next;
1034             HeapFree(GetProcessHeap(), 0, current);
1035             return;
1036         }
1037     }
1038 }
1039
1040 NDR_SCONTEXT RPCRT4_PopThreadContextHandle(void)
1041 {
1042     struct threaddata *tdata = get_or_create_threaddata();
1043     struct context_handle_list *context_handle_list;
1044     NDR_SCONTEXT context_handle;
1045
1046     if (!tdata) return NULL;
1047
1048     context_handle_list = tdata->context_handle_list;
1049     if (!context_handle_list) return NULL;
1050     tdata->context_handle_list = context_handle_list->next;
1051
1052     context_handle = context_handle_list->context_handle;
1053     HeapFree(GetProcessHeap(), 0, context_handle_list);
1054     return context_handle;
1055 }
1056
1057 /******************************************************************************
1058  * RpcCancelThread   (rpcrt4.@)
1059  */
1060 RPC_STATUS RPC_ENTRY RpcCancelThread(void* ThreadHandle)
1061 {
1062     DWORD target_tid;
1063     struct threaddata *tdata;
1064
1065     TRACE("(%p)\n", ThreadHandle);
1066
1067     target_tid = GetThreadId(ThreadHandle);
1068     if (!target_tid)
1069         return RPC_S_INVALID_ARG;
1070
1071     EnterCriticalSection(&threaddata_cs);
1072     LIST_FOR_EACH_ENTRY(tdata, &threaddata_list, struct threaddata, entry)
1073         if (tdata->thread_id == target_tid)
1074         {
1075             EnterCriticalSection(&tdata->cs);
1076             if (tdata->connection) rpcrt4_conn_cancel_call(tdata->connection);
1077             LeaveCriticalSection(&tdata->cs);
1078             break;
1079         }
1080     LeaveCriticalSection(&threaddata_cs);
1081
1082     return RPC_S_OK;
1083 }