reactos/lib/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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * WINE RPC TODO's (and a few TODONT's)
  21  *
  22  * - Ove's decreasingly incomplete widl is an IDL compiler for wine.  For widl
  23  *   to be wine's only IDL compiler, a fair bit of work remains to be done.
  24  *   until then we have used some midl-generated stuff.  (What?)
  25  *   widl currently doesn't generate stub/proxy files required by wine's (O)RPC
  26  *   capabilities -- nor does it make those lovely format strings :(
  27  *   The MS MIDL compiler does some really esoteric stuff.  Of course Ove has
  28  *   started with the less esoteric stuff.  There are also lots of nice
  29  *   comments in there if you want to flex your bison and help build this monster.
  30  *
  31  * - RPC has a quite featureful error handling mechanism; basically none of this is
  32  *   implemented right now.  We also have deficiencies on the compiler side, where
  33  *   wine's __TRY / __EXCEPT / __FINALLY macros are not even used for RpcTryExcept & co,
  34  *   due to syntactic differences! (we can fix it with widl by using __TRY)
  35  *
  36  * - There are several different memory allocation schemes for MSRPC.
  37  *   I don't even understand what they all are yet, much less have them
  38  *   properly implemented.  Surely we are supposed to be doing something with
  39  *   the user-provided allocation/deallocation functions, but so far,
  40  *   I don't think we are doing this...
  41  *
  42  * - MSRPC provides impersonation capabilities which currently are not possible
  43  *   to implement in wine.  At the very least we should implement the authorization
  44  *   API's & gracefully ignore the irrelevant stuff (to an extent we already do).
  45  *
  46  * - Some transports are not yet implemented.  The existing transport implementations
  47  *   are incomplete and may be bug-infested.
  48  *
  49  * - The various transports that we do support ought to be supported in a more
  50  *   object-oriented manner, as in DCE's RPC implementation, instead of cluttering
  51  *   up the code with conditionals like we do now.
  52  *
  53  * - Data marshalling: So far, only the beginnings of a full implementation
  54  *   exist in wine.  NDR protocol itself is documented, but the MS API's to
  55  *   convert data-types in memory into NDR are not.  This is challenging work,
  56  *   and has supposedly been "at the top of Greg's queue" for several months now.
  57  *
  58  * - ORPC is RPC for OLE; once we have a working RPC framework, we can
  59  *   use it to implement out-of-process OLE client/server communications.
  60  *   ATM there is maybe a disconnect between the marshalling in the OLE DLL's
  61  *   and the marshalling going on here [TODO: well, is there or not?]
  62  *
  63  * - In-source API Documentation, at least for those functions which we have
  64  *   implemented, but preferably for everything we can document, would be nice,
  65  *   since some of this stuff is quite obscure.
  66  *
  67  * - Name services... [TODO: what about them]
  68  *
  69  * - Protocol Towers: Totally unimplemented.... I think.
  70  *
  71  * - Context Handle Rundown: whatever that is.
  72  *
  73  * - Nested RPC's: Totally unimplemented.
  74  *
  75  * - Statistics: we are supposed to be keeping various counters.  we aren't.
  76  *
  77  * - Async RPC: Unimplemented.
  78  *
  79  * - XML/http RPC: Somewhere there's an XML fiend that wants to do this! Betcha
  80  *   we could use these as a transport for RPC's across computers without a
  81  *   permissions and/or licensing crisis.
  82  *
  83  * - The NT "ports" API, aka LPC.  Greg claims this is on his radar.  Might (or
  84  *   might not) enable users to get some kind of meaningful result out of
  85  *   NT-based native rpcrt4's.  Commonly-used transport for self-to-self RPC's.
  86  *
  87  * - ...?  More stuff I haven't thought of.  If you think of more RPC todo's
  88  *   drop me an e-mail <gmturner007@ameritech.net> or send a patch to the
  89  *   wine-patches mailing list.
  90  */
  91
  92 #include "config.h"
  93
  94 #include <stdarg.h>
  95 #include <stdio.h>
  96 #include <stdlib.h>
  97 #include <string.h>
  98
  99 #include "windef.h"
 100 #include "winerror.h"
 101 #include "winbase.h"
 102 #include "winuser.h"
 103 #include "iptypes.h"
 104 #include "iphlpapi.h"
 105 #include "wine/unicode.h"
 106 #include "rpc.h"
 107
 108 #include "ole2.h"
 109 #include "rpcndr.h"
 110 #include "rpcproxy.h"
 111
 112 #include "rpc_binding.h"
 113 #include "rpcss_np_client.h"
 114
 115 #include "wine/debug.h"
 116
 117 WINE_DEFAULT_DEBUG_CHANNEL(ole);
 118
 119 static UUID uuid_nil;
 120 static HANDLE master_mutex;
 121
 122 HANDLE RPCRT4_GetMasterMutex(void)
 123 {
 124     return master_mutex;
 125 }
 126
 127 static CRITICAL_SECTION uuid_cs;
 128 static CRITICAL_SECTION_DEBUG critsect_debug =
 129 {
 130     0, 0, &uuid_cs,
 131     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
 132       0, 0, { 0, (DWORD)(__FILE__ ": uuid_cs") }
 133 };
 134 static CRITICAL_SECTION uuid_cs = { &critsect_debug, -1, 0, 0, 0, 0 };
 135
 136 /***********************************************************************
 137  * DllMain
 138  *
 139  * PARAMS
 140  *     hinstDLL    [I] handle to the DLL's instance
 141  *     fdwReason   [I]
 142  *     lpvReserved [I] reserved, must be NULL
 143  *
 144  * RETURNS
 145  *     Success: TRUE
 146  *     Failure: FALSE
 147  */
 148
 149 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 150 {
 151     switch (fdwReason) {
 152     case DLL_PROCESS_ATTACH:
 153         DisableThreadLibraryCalls(hinstDLL);
 154         master_mutex = CreateMutexA( NULL, FALSE, RPCSS_MASTER_MUTEX_NAME);
 155         if (!master_mutex)
 156           ERR("Failed to create master mutex\n");
 157         break;
 158
 159     case DLL_PROCESS_DETACH:
 160         CloseHandle(master_mutex);
 161         master_mutex = NULL;
 162         break;
 163     }
 164
 165     return TRUE;
 166 }
 167
 168 /*************************************************************************
 169  *           RpcStringFreeA   [RPCRT4.@]
 170  *
 171  * Frees a character string allocated by the RPC run-time library.
 172  *
 173  * RETURNS
 174  *
 175  *  S_OK if successful.
 176  */
 177 RPC_STATUS WINAPI RpcStringFreeA(unsigned char** String)
 178 {
 179   HeapFree( GetProcessHeap(), 0, *String);
 180
 181   return RPC_S_OK;
 182 }
 183
 184 /*************************************************************************
 185  *           RpcStringFreeW   [RPCRT4.@]
 186  *
 187  * Frees a character string allocated by the RPC run-time library.
 188  *
 189  * RETURNS
 190  *
 191  *  S_OK if successful.
 192  */
 193 RPC_STATUS WINAPI RpcStringFreeW(unsigned short** String)
 194 {
 195   HeapFree( GetProcessHeap(), 0, *String);
 196
 197   return RPC_S_OK;
 198 }
 199
 200 /*************************************************************************
 201  *           RpcRaiseException   [RPCRT4.@]
 202  *
 203  * Raises an exception.
 204  */
 205 void WINAPI RpcRaiseException(RPC_STATUS exception)
 206 {
 207   /* FIXME: translate exception? */
 208   RaiseException(exception, 0, 0, NULL);
 209 }
 210
 211 /*************************************************************************
 212  * UuidCompare [RPCRT4.@]
 213  *
 214  * PARAMS
 215  *     UUID *Uuid1        [I] Uuid to compare
 216  *     UUID *Uuid2        [I] Uuid to compare
 217  *     RPC_STATUS *Status [O] returns RPC_S_OK
 218  *
 219  * RETURNS
 220  *    -1  if Uuid1 is less than Uuid2
 221  *     0  if Uuid1 and Uuid2 are equal
 222  *     1  if Uuid1 is greater than Uuid2
 223  */
 224 int WINAPI UuidCompare(UUID *Uuid1, UUID *Uuid2, RPC_STATUS *Status)
 225 {
 226   int i;
 227
 228   TRACE("(%s,%s)\n", debugstr_guid(Uuid1), debugstr_guid(Uuid2));
 229
 230   *Status = RPC_S_OK;
 231
 232   if (!Uuid1) Uuid1 = &uuid_nil;
 233   if (!Uuid2) Uuid2 = &uuid_nil;
 234
 235   if (Uuid1 == Uuid2) return 0;
 236
 237   if (Uuid1->Data1 != Uuid2->Data1)
 238     return Uuid1->Data1 < Uuid2->Data1 ? -1 : 1;
 239
 240   if (Uuid1->Data2 != Uuid2->Data2)
 241     return Uuid1->Data2 < Uuid2->Data2 ? -1 : 1;
 242
 243   if (Uuid1->Data3 != Uuid2->Data3)
 244     return Uuid1->Data3 < Uuid2->Data3 ? -1 : 1;
 245
 246   for (i = 0; i < 8; i++) {
 247     if (Uuid1->Data4[i] < Uuid2->Data4[i])
 248       return -1;
 249     if (Uuid1->Data4[i] > Uuid2->Data4[i])
 250       return 1;
 251   }
 252
 253   return 0;
 254 }
 255
 256 /*************************************************************************
 257  * UuidEqual [RPCRT4.@]
 258  *
 259  * PARAMS
 260  *     UUID *Uuid1        [I] Uuid to compare
 261  *     UUID *Uuid2        [I] Uuid to compare
 262  *     RPC_STATUS *Status [O] returns RPC_S_OK
 263  *
 264  * RETURNS
 265  *     TRUE/FALSE
 266  */
 267 int WINAPI UuidEqual(UUID *Uuid1, UUID *Uuid2, RPC_STATUS *Status)
 268 {
 269   TRACE("(%s,%s)\n", debugstr_guid(Uuid1), debugstr_guid(Uuid2));
 270   return !UuidCompare(Uuid1, Uuid2, Status);
 271 }
 272
 273 /*************************************************************************
 274  * UuidIsNil [RPCRT4.@]
 275  *
 276  * PARAMS
 277  *     UUID *Uuid         [I] Uuid to compare
 278  *     RPC_STATUS *Status [O] retuns RPC_S_OK
 279  *
 280  * RETURNS
 281  *     TRUE/FALSE
 282  */
 283 int WINAPI UuidIsNil(UUID *Uuid, RPC_STATUS *Status)
 284 {
 285   TRACE("(%s)\n", debugstr_guid(Uuid));
 286   if (!Uuid) return TRUE;
 287   return !UuidCompare(Uuid, &uuid_nil, Status);
 288 }
 289
 290  /*************************************************************************
 291  * UuidCreateNil [RPCRT4.@]
 292  *
 293  * PARAMS
 294  *     UUID *Uuid [O] returns a nil UUID
 295  *
 296  * RETURNS
 297  *     RPC_S_OK
 298  */
 299 RPC_STATUS WINAPI UuidCreateNil(UUID *Uuid)
 300 {
 301   *Uuid = uuid_nil;
 302   return RPC_S_OK;
 303 }
 304
 305 /* Number of 100ns ticks per clock tick. To be safe, assume that the clock
 306    resolution is at least 1000 * 100 * (1/1000000) = 1/10 of a second */
 307 #define TICKS_PER_CLOCK_TICK 1000
 308 #define SECSPERDAY  86400
 309 #define TICKSPERSEC 10000000
 310 /* UUID system time starts at October 15, 1582 */
 311 #define SECS_15_OCT_1582_TO_1601  ((17 + 30 + 31 + 365 * 18 + 5) * SECSPERDAY)
 312 #define TICKS_15_OCT_1582_TO_1601 ((ULONGLONG)SECS_15_OCT_1582_TO_1601 * TICKSPERSEC)
 313
 314 static void RPC_UuidGetSystemTime(ULONGLONG *time)
 315 {
 316     FILETIME ft;
 317
 318     GetSystemTimeAsFileTime(&ft);
 319
 320     *time = ((ULONGLONG)ft.dwHighDateTime << 32) | ft.dwLowDateTime;
 321     *time += TICKS_15_OCT_1582_TO_1601;
 322 }
 323
 324 /* Assume that a hardware address is at least 6 bytes long */
 325 #define ADDRESS_BYTES_NEEDED 6
 326
 327 static RPC_STATUS RPC_UuidGetNodeAddress(BYTE *address)
 328 {
 329     int i;
 330     DWORD status = RPC_S_OK;
 331
 332     ULONG buflen = sizeof(IP_ADAPTER_INFO);
 333     PIP_ADAPTER_INFO adapter = (PIP_ADAPTER_INFO)HeapAlloc(GetProcessHeap(), 0, buflen);
 334
 335     if (GetAdaptersInfo(adapter, &buflen) == ERROR_BUFFER_OVERFLOW) {
 336         HeapFree(GetProcessHeap(), 0, adapter);
 337         adapter = (IP_ADAPTER_INFO *)HeapAlloc(GetProcessHeap(), 0, buflen);
 338     }
 339
 340     if (GetAdaptersInfo(adapter, &buflen) == NO_ERROR) {
 341         for (i = 0; i < ADDRESS_BYTES_NEEDED; i++) {
 342             address[i] = adapter->Address[i];
 343         }
 344     }
 345     /* We can't get a hardware address, just use random numbers.
 346        Set the multicast bit to prevent conflicts with real cards. */
 347     else {
 348         for (i = 0; i < ADDRESS_BYTES_NEEDED; i++) {
 349             address[i] = rand() & 0xff;
 350         }
 351
 352         address[0] |= 0x80;
 353         status = RPC_S_UUID_LOCAL_ONLY;
 354     }
 355
 356     HeapFree(GetProcessHeap(), 0, adapter);
 357     return status;
 358 }
 359
 360 /*************************************************************************
 361  *           UuidCreate   [RPCRT4.@]
 362  *
 363  * Creates a 128bit UUID.
 364  *
 365  * RETURNS
 366  *
 367  *  RPC_S_OK if successful.
 368  *  RPC_S_UUID_LOCAL_ONLY if UUID is only locally unique.
 369  *
 370  *  FIXME: No compensation for changes across reloading
 371  *         this dll or across reboots (e.g. clock going
 372  *         backwards and swapped network cards). The RFC
 373  *         suggests using NVRAM for storing persistent
 374  *         values.
 375  */
 376 RPC_STATUS WINAPI UuidCreate(UUID *Uuid)
 377 {
 378     static int initialised, count;
 379
 380     ULONGLONG time;
 381     static ULONGLONG timelast;
 382     static WORD sequence;
 383
 384     static DWORD status;
 385     static BYTE address[MAX_ADAPTER_ADDRESS_LENGTH];
 386
 387     EnterCriticalSection(&uuid_cs);
 388
 389     if (!initialised) {
 390         RPC_UuidGetSystemTime(&timelast);
 391         count = TICKS_PER_CLOCK_TICK;
 392
 393         sequence = ((rand() & 0xff) << 8) + (rand() & 0xff);
 394         sequence &= 0x1fff;
 395
 396         status = RPC_UuidGetNodeAddress(address);
 397         initialised = 1;
 398     }
 399
 400     /* Generate time element of the UUID. Account for going faster
 401        than our clock as well as the clock going backwards. */
 402     while (1) {
 403         RPC_UuidGetSystemTime(&time);
 404         if (time > timelast) {
 405             count = 0;
 406             break;
 407         }
 408         if (time < timelast) {
 409             sequence = (sequence + 1) & 0x1fff;
 410             count = 0;
 411             break;
 412         }
 413         if (count < TICKS_PER_CLOCK_TICK) {
 414             count++;
 415             break;
 416         }
 417     }
 418
 419     timelast = time;
 420     time += count;
 421
 422     /* Pack the information into the UUID structure. */
 423
 424     Uuid->Data1  = (unsigned long)(time & 0xffffffff);
 425     Uuid->Data2  = (unsigned short)((time >> 32) & 0xffff);
 426     Uuid->Data3  = (unsigned short)((time >> 48) & 0x0fff);
 427
 428     /* This is a version 1 UUID */
 429     Uuid->Data3 |= (1 << 12);
 430
 431     Uuid->Data4[0]  = sequence & 0xff;
 432     Uuid->Data4[1]  = (sequence & 0x3f00) >> 8;
 433     Uuid->Data4[1] |= 0x80;
 434
 435     Uuid->Data4[2] = address[0];
 436     Uuid->Data4[3] = address[1];
 437     Uuid->Data4[4] = address[2];
 438     Uuid->Data4[5] = address[3];
 439     Uuid->Data4[6] = address[4];
 440     Uuid->Data4[7] = address[5];
 441
 442     LeaveCriticalSection(&uuid_cs);
 443
 444     TRACE("%s\n", debugstr_guid(Uuid));
 445
 446     return status;
 447 }
 448
 449 /*************************************************************************
 450  *           UuidCreateSequential   [RPCRT4.@]
 451  *
 452  * Creates a 128bit UUID.
 453  *
 454  * RETURNS
 455  *
 456  *  RPC_S_OK if successful.
 457  *  RPC_S_UUID_LOCAL_ONLY if UUID is only locally unique.
 458  *
 459  */
 460 RPC_STATUS WINAPI UuidCreateSequential(UUID *Uuid)
 461 {
 462    return UuidCreate(Uuid);
 463 }
 464
 465
 466 /*************************************************************************
 467  *           UuidHash   [RPCRT4.@]
 468  *
 469  * Generates a hash value for a given UUID
 470  *
 471  * Code based on FreeDCE implementation
 472  *
 473  */
 474 unsigned short WINAPI UuidHash(UUID *uuid, RPC_STATUS *Status)
 475 {
 476   BYTE *data = (BYTE*)uuid;
 477   short c0 = 0, c1 = 0, x, y;
 478   unsigned int i;
 479
 480   if (!uuid) data = (BYTE*)(uuid = &uuid_nil);
 481
 482   TRACE("(%s)\n", debugstr_guid(uuid));
 483
 484   for (i=0; i<sizeof(UUID); i++) {
 485     c0 += data[i];
 486     c1 += c0;
 487   }
 488
 489   x = -c1 % 255;
 490   if (x < 0) x += 255;
 491
 492   y = (c1 - c0) % 255;
 493   if (y < 0) y += 255;
 494
 495   *Status = RPC_S_OK;
 496   return y*256 + x;
 497 }
 498
 499 /*************************************************************************
 500  *           UuidToStringA   [RPCRT4.@]
 501  *
 502  * Converts a UUID to a string.
 503  *
 504  * UUID format is 8 hex digits, followed by a hyphen then three groups of
 505  * 4 hex digits each followed by a hyphen and then 12 hex digits
 506  *
 507  * RETURNS
 508  *
 509  *  S_OK if successful.
 510  *  S_OUT_OF_MEMORY if unsucessful.
 511  */
 512 RPC_STATUS WINAPI UuidToStringA(UUID *Uuid, unsigned char** StringUuid)
 513 {
 514   *StringUuid = HeapAlloc( GetProcessHeap(), 0, sizeof(char) * 37);
 515
 516   if(!(*StringUuid))
 517     return RPC_S_OUT_OF_MEMORY;
 518
 519   if (!Uuid) Uuid = &uuid_nil;
 520
 521   sprintf(*StringUuid, "%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 522                  Uuid->Data1, Uuid->Data2, Uuid->Data3,
 523                  Uuid->Data4[0], Uuid->Data4[1], Uuid->Data4[2],
 524                  Uuid->Data4[3], Uuid->Data4[4], Uuid->Data4[5],
 525                  Uuid->Data4[6], Uuid->Data4[7] );
 526
 527   return RPC_S_OK;
 528 }
 529
 530 /*************************************************************************
 531  *           UuidToStringW   [RPCRT4.@]
 532  *
 533  * Converts a UUID to a string.
 534  *
 535  *  S_OK if successful.
 536  *  S_OUT_OF_MEMORY if unsucessful.
 537  */
 538 RPC_STATUS WINAPI UuidToStringW(UUID *Uuid, unsigned short** StringUuid)
 539 {
 540   char buf[37];
 541
 542   if (!Uuid) Uuid = &uuid_nil;
 543
 544   sprintf(buf, "%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
 545                Uuid->Data1, Uuid->Data2, Uuid->Data3,
 546                Uuid->Data4[0], Uuid->Data4[1], Uuid->Data4[2],
 547                Uuid->Data4[3], Uuid->Data4[4], Uuid->Data4[5],
 548                Uuid->Data4[6], Uuid->Data4[7] );
 549
 550   *StringUuid = RPCRT4_strdupAtoW(buf);
 551
 552   if(!(*StringUuid))
 553     return RPC_S_OUT_OF_MEMORY;
 554
 555   return RPC_S_OK;
 556 }
 557
 558 static const BYTE hex2bin[] =
 559 {
 560     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x00 */
 561     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x10 */
 562     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x20 */
 563     0,1,2,3,4,5,6,7,8,9,0,0,0,0,0,0,        /* 0x30 */
 564     0,10,11,12,13,14,15,0,0,0,0,0,0,0,0,0,  /* 0x40 */
 565     0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,        /* 0x50 */
 566     0,10,11,12,13,14,15                     /* 0x60 */
 567 };
 568
 569 /***********************************************************************
 570  *              UuidFromStringA (RPCRT4.@)
 571  */
 572 RPC_STATUS WINAPI UuidFromStringA(unsigned char* str, UUID *uuid)
 573 {
 574     BYTE *s = (BYTE *)str;
 575     int i;
 576
 577     if (!s) return UuidCreateNil( uuid );
 578
 579     if (strlen(s) != 36) return RPC_S_INVALID_STRING_UUID;
 580
 581     if ((s[8]!='-') || (s[13]!='-') || (s[18]!='-') || (s[23]!='-'))
 582         return RPC_S_INVALID_STRING_UUID;
 583
 584     for (i=0; i<36; i++)
 585     {
 586         if ((i == 8)||(i == 13)||(i == 18)||(i == 23)) continue;
 587         if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0')) return RPC_S_INVALID_STRING_UUID;
 588     }
 589
 590     /* in form XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX */
 591
 592     uuid->Data1 = (hex2bin[s[0]] << 28 | hex2bin[s[1]] << 24 | hex2bin[s[2]] << 20 | hex2bin[s[3]] << 16 |
 593                    hex2bin[s[4]] << 12 | hex2bin[s[5]]  << 8 | hex2bin[s[6]]  << 4 | hex2bin[s[7]]);
 594     uuid->Data2 =  hex2bin[s[9]] << 12 | hex2bin[s[10]] << 8 | hex2bin[s[11]] << 4 | hex2bin[s[12]];
 595     uuid->Data3 = hex2bin[s[14]] << 12 | hex2bin[s[15]] << 8 | hex2bin[s[16]] << 4 | hex2bin[s[17]];
 596
 597     /* these are just sequential bytes */
 598     uuid->Data4[0] = hex2bin[s[19]] << 4 | hex2bin[s[20]];
 599     uuid->Data4[1] = hex2bin[s[21]] << 4 | hex2bin[s[22]];
 600     uuid->Data4[2] = hex2bin[s[24]] << 4 | hex2bin[s[25]];
 601     uuid->Data4[3] = hex2bin[s[26]] << 4 | hex2bin[s[27]];
 602     uuid->Data4[4] = hex2bin[s[28]] << 4 | hex2bin[s[29]];
 603     uuid->Data4[5] = hex2bin[s[30]] << 4 | hex2bin[s[31]];
 604     uuid->Data4[6] = hex2bin[s[32]] << 4 | hex2bin[s[33]];
 605     uuid->Data4[7] = hex2bin[s[34]] << 4 | hex2bin[s[35]];
 606     return RPC_S_OK;
 607 }
 608
 609
 610 /***********************************************************************
 611  *              UuidFromStringW (RPCRT4.@)
 612  */
 613 RPC_STATUS WINAPI UuidFromStringW(unsigned short* s, UUID *uuid)
 614 {
 615     int i;
 616
 617     if (!s) return UuidCreateNil( uuid );
 618
 619     if (strlenW(s) != 36) return RPC_S_INVALID_STRING_UUID;
 620
 621     if ((s[8]!='-') || (s[13]!='-') || (s[18]!='-') || (s[23]!='-'))
 622         return RPC_S_INVALID_STRING_UUID;
 623
 624     for (i=0; i<36; i++)
 625     {
 626         if ((i == 8)||(i == 13)||(i == 18)||(i == 23)) continue;
 627         if (s[i] > 'f' || (!hex2bin[s[i]] && s[i] != '0')) return RPC_S_INVALID_STRING_UUID;
 628     }
 629
 630     /* in form XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX */
 631
 632     uuid->Data1 = (hex2bin[s[0]] << 28 | hex2bin[s[1]] << 24 | hex2bin[s[2]] << 20 | hex2bin[s[3]] << 16 |
 633                    hex2bin[s[4]] << 12 | hex2bin[s[5]]  << 8 | hex2bin[s[6]]  << 4 | hex2bin[s[7]]);
 634     uuid->Data2 =  hex2bin[s[9]] << 12 | hex2bin[s[10]] << 8 | hex2bin[s[11]] << 4 | hex2bin[s[12]];
 635     uuid->Data3 = hex2bin[s[14]] << 12 | hex2bin[s[15]] << 8 | hex2bin[s[16]] << 4 | hex2bin[s[17]];
 636
 637     /* these are just sequential bytes */
 638     uuid->Data4[0] = hex2bin[s[19]] << 4 | hex2bin[s[20]];
 639     uuid->Data4[1] = hex2bin[s[21]] << 4 | hex2bin[s[22]];
 640     uuid->Data4[2] = hex2bin[s[24]] << 4 | hex2bin[s[25]];
 641     uuid->Data4[3] = hex2bin[s[26]] << 4 | hex2bin[s[27]];
 642     uuid->Data4[4] = hex2bin[s[28]] << 4 | hex2bin[s[29]];
 643     uuid->Data4[5] = hex2bin[s[30]] << 4 | hex2bin[s[31]];
 644     uuid->Data4[6] = hex2bin[s[32]] << 4 | hex2bin[s[33]];
 645     uuid->Data4[7] = hex2bin[s[34]] << 4 | hex2bin[s[35]];
 646     return RPC_S_OK;
 647 }
 648
 649 /***********************************************************************
 650  *              DllRegisterServer (RPCRT4.@)
 651  */
 652
 653 HRESULT WINAPI RPCRT4_DllRegisterServer( void )
 654 {
 655     FIXME( "(): stub\n" );
 656     return S_OK;
 657 }
 658
 659 BOOL RPCRT4_StartRPCSS(void)
 660 {
 661     PROCESS_INFORMATION pi;
 662     STARTUPINFOA si;
 663     static char cmd[6];
 664     BOOL rslt;
 665
 666     ZeroMemory(&pi, sizeof(PROCESS_INFORMATION));
 667     ZeroMemory(&si, sizeof(STARTUPINFOA));
 668     si.cb = sizeof(STARTUPINFOA);
 669
 670     /* apparently it's not OK to use a constant string below */
 671     CopyMemory(cmd, "rpcss", 6);
 672
 673     /* FIXME: will this do the right thing when run as a test? */
 674     rslt = CreateProcessA(
 675         NULL,           /* executable */
 676         cmd,            /* command line */
 677         NULL,           /* process security attributes */
 678         NULL,           /* primary thread security attributes */
 679         FALSE,          /* inherit handles */
 680         0,              /* creation flags */
 681         NULL,           /* use parent's environment */
 682         NULL,           /* use parent's current directory */
 683         &si,            /* STARTUPINFO pointer */
 684         &pi             /* PROCESS_INFORMATION */
 685     );
 686
 687     if (rslt) {
 688       CloseHandle(pi.hProcess);
 689       CloseHandle(pi.hThread);
 690     }
 691
 692     return rslt;
 693 }
 694
 695 /***********************************************************************
 696  *           RPCRT4_RPCSSOnDemandCall (internal)
 697  *
 698  * Attempts to send a message to the RPCSS process
 699  * on the local machine, invoking it if necessary.
 700  * For remote RPCSS calls, use.... your imagination.
 701  *
 702  * PARAMS
 703  *     msg             [I] pointer to the RPCSS message
 704  *     vardata_payload [I] pointer vardata portion of the RPCSS message
 705  *     reply           [O] pointer to reply structure
 706  *
 707  * RETURNS
 708  *     TRUE if successful
 709  *     FALSE otherwise
 710  */
 711 BOOL RPCRT4_RPCSSOnDemandCall(PRPCSS_NP_MESSAGE msg, char *vardata_payload, PRPCSS_NP_REPLY reply)
 712 {
 713     HANDLE client_handle;
 714     int i, j = 0;
 715
 716     TRACE("(msg == %p, vardata_payload == %p, reply == %p)\n", msg, vardata_payload, reply);
 717
 718     client_handle = RPCRT4_RpcssNPConnect();
 719
 720     while (!client_handle) {
 721         /* start the RPCSS process */
 722         if (!RPCRT4_StartRPCSS()) {
 723             ERR("Unable to start RPCSS process.\n");
 724             return FALSE;
 725         }
 726         /* wait for a connection (w/ periodic polling) */
 727         for (i = 0; i < 60; i++) {
 728             Sleep(200);
 729             client_handle = RPCRT4_RpcssNPConnect();
 730             if (client_handle) break;
 731         }
 732         /* we are only willing to try twice */
 733         if (j++ >= 1) break;
 734     }
 735
 736     if (!client_handle) {
 737         /* no dice! */
 738         ERR("Unable to connect to RPCSS process!\n");
 739         SetLastError(RPC_E_SERVER_DIED_DNE);
 740         return FALSE;
 741     }
 742
 743     /* great, we're connected.  now send the message */
 744     if (!RPCRT4_SendReceiveNPMsg(client_handle, msg, vardata_payload, reply)) {
 745         ERR("Something is amiss: RPC_SendReceive failed.\n");
 746         return FALSE;
 747     }
 748
 749     return TRUE;
 750 }
 751
 752 /* DceErrorInqText
 753  *
 754  * Notes
 755  * 1. On passing a NULL pointer the code does bomb out.
 756  * 2. The size of the required buffer is not defined in the documentation.
 757  *    It appears to be 256.
 758  * 3. The function is defined to return RPC_S_INVALID_ARG but I don't know
 759  *    of any value for which it does.
 760  * 4. The MSDN documentation currently declares that the second argument is
 761  *    unsigned char *, even for the W version.  I don't believe it.
 762  */
 763
 764 #define MAX_RPC_ERROR_TEXT 256
 765
 766 RPC_STATUS RPC_ENTRY DceErrorInqTextW (RPC_STATUS e, unsigned short *buffer)
 767 {
 768     DWORD count;
 769     count = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM |
 770                 FORMAT_MESSAGE_IGNORE_INSERTS,
 771                 NULL, e, 0, buffer, MAX_RPC_ERROR_TEXT, NULL);
 772     if (!count)
 773     {
 774         count = FormatMessageW (FORMAT_MESSAGE_FROM_SYSTEM |
 775                 FORMAT_MESSAGE_IGNORE_INSERTS,
 776                 NULL, RPC_S_NOT_RPC_ERROR, 0, buffer, MAX_RPC_ERROR_TEXT, NULL);
 777         if (!count)
 778         {
 779             ERR ("Failed to translate error");
 780             return RPC_S_INVALID_ARG;
 781         }
 782     }
 783     return RPC_S_OK;
 784 }
 785
 786 RPC_STATUS RPC_ENTRY DceErrorInqTextA (RPC_STATUS e, unsigned char *buffer)
 787 {
 788     RPC_STATUS status;
 789     WCHAR bufferW [MAX_RPC_ERROR_TEXT];
 790     if ((status = DceErrorInqTextW (e, bufferW)) == RPC_S_OK)
 791     {
 792         if (!WideCharToMultiByte(CP_ACP, 0, bufferW, -1, buffer, MAX_RPC_ERROR_TEXT,
 793                 NULL, NULL))
 794         {
 795             ERR ("Failed to translate error");
 796             status = RPC_S_INVALID_ARG;
 797         }
 798     }
 799     return status;
 800 }