git.oblomov.eu Git - wine/blob - dlls/wintrust/crypt.c

   1 /*
   2  * WinTrust Cryptography functions
   3  *
   4  * Copyright 2006 James Hawkins
   5  * Copyright 2000-2002 Stuart Caie
   6  * Copyright 2002 Patrik Stridvall
   7  * Copyright 2003 Greg Turner
   8  * Copyright 2008 Juan Lang
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  */
  24
  25 #include <stdarg.h>
  26 #include <stdio.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wintrust.h"
  30 #include "mscat.h"
  31 #include "mssip.h"
  32 #include "imagehlp.h"
  33 #include "winternl.h"
  34
  35 #include "wine/debug.h"
  36 #include "wine/unicode.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(wintrust);
  39
  40 #define CATADMIN_MAGIC 0x43415441 /* 'CATA' */
  41 #define CRYPTCAT_MAGIC 0x43415443 /* 'CATC' */
  42 #define CATINFO_MAGIC  0x43415449 /* 'CATI' */
  43
  44 struct cryptcat
  45 {
  46     DWORD     magic;
  47     HCRYPTMSG msg;
  48     DWORD     encoding;
  49     CTL_INFO *inner;
  50     DWORD     inner_len;
  51     GUID      subject;
  52     DWORD     attr_count;
  53     CRYPTCATATTRIBUTE *attr;
  54 };
  55
  56 struct catadmin
  57 {
  58     DWORD magic;
  59     WCHAR path[MAX_PATH];
  60     HANDLE find;
  61 };
  62
  63 struct catinfo
  64 {
  65     DWORD magic;
  66     WCHAR file[MAX_PATH];
  67 };
  68
  69 static HCATINFO create_catinfo(const WCHAR *filename)
  70 {
  71     struct catinfo *ci;
  72
  73     if (!(ci = HeapAlloc(GetProcessHeap(), 0, sizeof(*ci))))
  74     {
  75         SetLastError(ERROR_OUTOFMEMORY);
  76         return INVALID_HANDLE_VALUE;
  77     }
  78     strcpyW(ci->file, filename);
  79     ci->magic = CATINFO_MAGIC;
  80     return ci;
  81 }
  82
  83 /***********************************************************************
  84  *      CryptCATAdminAcquireContext (WINTRUST.@)
  85  *
  86  * Get a catalog administrator context handle.
  87  *
  88  * PARAMS
  89  *   catAdmin  [O] Pointer to the context handle.
  90  *   sys       [I] Pointer to a GUID for the needed subsystem.
  91  *   dwFlags   [I] Reserved.
  92  *
  93  * RETURNS
  94  *   Success: TRUE. catAdmin contains the context handle.
  95  *   Failure: FALSE.
  96  *
  97  */
  98 BOOL WINAPI CryptCATAdminAcquireContext(HCATADMIN *catAdmin,
  99                                         const GUID *sys, DWORD dwFlags)
 100 {
 101     static const WCHAR catroot[] =
 102         {'\\','c','a','t','r','o','o','t',0};
 103     static const WCHAR fmt[] =
 104         {'%','s','\\','{','%','0','8','x','-','%','0','4','x','-','%','0',
 105          '4','x','-','%','0','2','x','%','0','2','x','-','%','0','2','x',
 106          '%','0','2','x','%','0','2','x','%','0','2','x','%','0','2','x',
 107          '%','0','2','x','}',0};
 108     static const GUID defsys =
 109         {0x127d0a1d,0x4ef2,0x11d1,{0x86,0x08,0x00,0xc0,0x4f,0xc2,0x95,0xee}};
 110
 111     WCHAR catroot_dir[MAX_PATH];
 112     struct catadmin *ca;
 113
 114     TRACE("%p %s %x\n", catAdmin, debugstr_guid(sys), dwFlags);
 115
 116     if (!catAdmin)
 117     {
 118         SetLastError(ERROR_INVALID_PARAMETER);
 119         return FALSE;
 120     }
 121     if (!(ca = HeapAlloc(GetProcessHeap(), 0, sizeof(*ca))))
 122     {
 123         SetLastError(ERROR_OUTOFMEMORY);
 124         return FALSE;
 125     }
 126
 127     GetSystemDirectoryW(catroot_dir, MAX_PATH);
 128     strcatW(catroot_dir, catroot);
 129
 130     /* create the directory if it doesn't exist */
 131     CreateDirectoryW(catroot_dir, NULL);
 132
 133     if (!sys) sys = &defsys;
 134     sprintfW(ca->path, fmt, catroot_dir, sys->Data1, sys->Data2,
 135              sys->Data3, sys->Data4[0], sys->Data4[1], sys->Data4[2],
 136              sys->Data4[3], sys->Data4[4], sys->Data4[5], sys->Data4[6],
 137              sys->Data4[7]);
 138
 139     /* create the directory if it doesn't exist */
 140     CreateDirectoryW(ca->path, NULL);
 141
 142     ca->magic = CATADMIN_MAGIC;
 143     ca->find = INVALID_HANDLE_VALUE;
 144
 145     *catAdmin = ca;
 146     return TRUE;
 147 }
 148
 149 /***********************************************************************
 150  *             CryptCATAdminAddCatalog (WINTRUST.@)
 151  */
 152 HCATINFO WINAPI CryptCATAdminAddCatalog(HCATADMIN catAdmin, PWSTR catalogFile,
 153                                         PWSTR selectBaseName, DWORD flags)
 154 {
 155     static const WCHAR slashW[] = {'\\',0};
 156     struct catadmin *ca = catAdmin;
 157     struct catinfo *ci;
 158     WCHAR *target;
 159     DWORD len;
 160
 161     TRACE("%p %s %s %d\n", catAdmin, debugstr_w(catalogFile),
 162           debugstr_w(selectBaseName), flags);
 163
 164     if (!selectBaseName)
 165     {
 166         FIXME("NULL basename not handled\n");
 167         SetLastError(ERROR_INVALID_PARAMETER);
 168         return NULL;
 169     }
 170     if (!ca || ca->magic != CATADMIN_MAGIC || !catalogFile || flags)
 171     {
 172         SetLastError(ERROR_INVALID_PARAMETER);
 173         return NULL;
 174     }
 175
 176     len = strlenW(ca->path) + strlenW(selectBaseName) + 2;
 177     if (!(target = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 178     {
 179         SetLastError(ERROR_OUTOFMEMORY);
 180         return NULL;
 181     }
 182     strcpyW(target, ca->path);
 183     strcatW(target, slashW);
 184     strcatW(target, selectBaseName);
 185
 186     if (!CopyFileW(catalogFile, target, FALSE))
 187     {
 188         HeapFree(GetProcessHeap(), 0, target);
 189         return NULL;
 190     }
 191     SetFileAttributesW(target, FILE_ATTRIBUTE_SYSTEM);
 192
 193     if (!(ci = HeapAlloc(GetProcessHeap(), 0, sizeof(*ci))))
 194     {
 195         HeapFree(GetProcessHeap(), 0, target);
 196         SetLastError(ERROR_OUTOFMEMORY);
 197         return NULL;
 198     }
 199     ci->magic = CATINFO_MAGIC;
 200     strcpyW(ci->file, target);
 201
 202     HeapFree(GetProcessHeap(), 0, target);
 203     return ci;
 204 }
 205
 206 /***********************************************************************
 207  *             CryptCATAdminCalcHashFromFileHandle (WINTRUST.@)
 208  */
 209 BOOL WINAPI CryptCATAdminCalcHashFromFileHandle(HANDLE hFile, DWORD* pcbHash,
 210                                                 BYTE* pbHash, DWORD dwFlags )
 211 {
 212     BOOL ret = FALSE;
 213
 214     TRACE("%p %p %p %x\n", hFile, pcbHash, pbHash, dwFlags);
 215
 216     if (!hFile || !pcbHash || dwFlags)
 217     {
 218         SetLastError(ERROR_INVALID_PARAMETER);
 219         return FALSE;
 220     }
 221     if (*pcbHash < 20)
 222     {
 223         *pcbHash = 20;
 224         SetLastError(ERROR_INSUFFICIENT_BUFFER);
 225         return TRUE;
 226     }
 227
 228     *pcbHash = 20;
 229     if (pbHash)
 230     {
 231         HCRYPTPROV prov;
 232         HCRYPTHASH hash;
 233         DWORD bytes_read;
 234         BYTE *buffer;
 235
 236         if (!(buffer = HeapAlloc(GetProcessHeap(), 0, 4096)))
 237         {
 238             SetLastError(ERROR_OUTOFMEMORY);
 239             return FALSE;
 240         }
 241         ret = CryptAcquireContextW(&prov, NULL, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
 242         if (!ret)
 243         {
 244             HeapFree(GetProcessHeap(), 0, buffer);
 245             return FALSE;
 246         }
 247         ret = CryptCreateHash(prov, CALG_SHA1, 0, 0, &hash);
 248         if (!ret)
 249         {
 250             HeapFree(GetProcessHeap(), 0, buffer);
 251             CryptReleaseContext(prov, 0);
 252             return FALSE;
 253         }
 254         while ((ret = ReadFile(hFile, buffer, 4096, &bytes_read, NULL)) && bytes_read)
 255         {
 256             CryptHashData(hash, buffer, bytes_read, 0);
 257         }
 258         if (ret) ret = CryptGetHashParam(hash, HP_HASHVAL, pbHash, pcbHash, 0);
 259
 260         HeapFree(GetProcessHeap(), 0, buffer);
 261         CryptDestroyHash(hash);
 262         CryptReleaseContext(prov, 0);
 263     }
 264     return ret;
 265 }
 266
 267 /***********************************************************************
 268  *             CryptCATAdminEnumCatalogFromHash (WINTRUST.@)
 269  */
 270 HCATINFO WINAPI CryptCATAdminEnumCatalogFromHash(HCATADMIN hCatAdmin, BYTE* pbHash,
 271                                                  DWORD cbHash, DWORD dwFlags,
 272                                                  HCATINFO* phPrevCatInfo )
 273 {
 274     static const WCHAR slashW[] = {'\\',0};
 275     static const WCHAR globW[]  = {'\\','*','.','c','a','t',0};
 276
 277     struct catadmin *ca = hCatAdmin;
 278     WIN32_FIND_DATAW data;
 279     HCATINFO prev = NULL;
 280     HCRYPTPROV prov;
 281     DWORD size;
 282     BOOL ret;
 283
 284     TRACE("%p %p %d %x %p\n", hCatAdmin, pbHash, cbHash, dwFlags, phPrevCatInfo);
 285
 286     if (!ca || ca->magic != CATADMIN_MAGIC || !pbHash || cbHash != 20 || dwFlags)
 287     {
 288         SetLastError(ERROR_INVALID_PARAMETER);
 289         return NULL;
 290     }
 291     if (phPrevCatInfo) prev = *phPrevCatInfo;
 292
 293     ret = CryptAcquireContextW(&prov, NULL, MS_DEF_PROV_W, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT);
 294     if (!ret) return NULL;
 295
 296     if (!prev)
 297     {
 298         WCHAR *path;
 299
 300         size = strlenW(ca->path) * sizeof(WCHAR) + sizeof(globW);
 301         if (!(path = HeapAlloc(GetProcessHeap(), 0, size)))
 302         {
 303             CryptReleaseContext(prov, 0);
 304             SetLastError(ERROR_OUTOFMEMORY);
 305             return NULL;
 306         }
 307         strcpyW(path, ca->path);
 308         strcatW(path, globW);
 309
 310         FindClose(ca->find);
 311         ca->find = FindFirstFileW(path, &data);
 312
 313         HeapFree(GetProcessHeap(), 0, path);
 314         if (ca->find == INVALID_HANDLE_VALUE)
 315         {
 316             CryptReleaseContext(prov, 0);
 317             return NULL;
 318         }
 319     }
 320     else if (!FindNextFileW(ca->find, &data))
 321     {
 322         CryptCATAdminReleaseCatalogContext(hCatAdmin, prev, 0);
 323         CryptReleaseContext(prov, 0);
 324         return NULL;
 325     }
 326
 327     while (1)
 328     {
 329         WCHAR *filename;
 330         CRYPTCATMEMBER *member = NULL;
 331         struct catinfo *ci;
 332         HANDLE hcat;
 333
 334         size = (strlenW(ca->path) + strlenW(data.cFileName) + 2) * sizeof(WCHAR);
 335         if (!(filename = HeapAlloc(GetProcessHeap(), 0, size)))
 336         {
 337             SetLastError(ERROR_OUTOFMEMORY);
 338             return NULL;
 339         }
 340         strcpyW(filename, ca->path);
 341         strcatW(filename, slashW);
 342         strcatW(filename, data.cFileName);
 343
 344         hcat = CryptCATOpen(filename, CRYPTCAT_OPEN_EXISTING, prov, 0, 0);
 345         if (hcat == INVALID_HANDLE_VALUE)
 346         {
 347             WARN("couldn't open %s (%u)\n", debugstr_w(filename), GetLastError());
 348             continue;
 349         }
 350         while ((member = CryptCATEnumerateMember(hcat, member)))
 351         {
 352             if (member->pIndirectData->Digest.cbData != cbHash)
 353             {
 354                 WARN("amount of hash bytes differs: %u/%u\n", member->pIndirectData->Digest.cbData, cbHash);
 355                 continue;
 356             }
 357             if (!memcmp(member->pIndirectData->Digest.pbData, pbHash, cbHash))
 358             {
 359                 TRACE("file %s matches\n", debugstr_w(data.cFileName));
 360
 361                 CryptCATClose(hcat);
 362                 CryptReleaseContext(prov, 0);
 363                 if (!phPrevCatInfo)
 364                 {
 365                     FindClose(ca->find);
 366                     ca->find = INVALID_HANDLE_VALUE;
 367                 }
 368                 ci = create_catinfo(filename);
 369                 HeapFree(GetProcessHeap(), 0, filename);
 370                 return ci;
 371             }
 372         }
 373         CryptCATClose(hcat);
 374         HeapFree(GetProcessHeap(), 0, filename);
 375
 376         if (!FindNextFileW(ca->find, &data))
 377         {
 378             FindClose(ca->find);
 379             ca->find = INVALID_HANDLE_VALUE;
 380             CryptReleaseContext(prov, 0);
 381             return NULL;
 382         }
 383     }
 384     return NULL;
 385 }
 386
 387 /***********************************************************************
 388  *      CryptCATAdminReleaseCatalogContext (WINTRUST.@)
 389  *
 390  * Release a catalog context handle.
 391  *
 392  * PARAMS
 393  *   hCatAdmin [I] Context handle.
 394  *   hCatInfo  [I] Catalog handle.
 395  *   dwFlags   [I] Reserved.
 396  *
 397  * RETURNS
 398  *   Success: TRUE.
 399  *   Failure: FALSE.
 400  *
 401  */
 402 BOOL WINAPI CryptCATAdminReleaseCatalogContext(HCATADMIN hCatAdmin,
 403                                                HCATINFO hCatInfo,
 404                                                DWORD dwFlags)
 405 {
 406     struct catinfo *ci = hCatInfo;
 407     struct catadmin *ca = hCatAdmin;
 408
 409     TRACE("%p %p %x\n", hCatAdmin, hCatInfo, dwFlags);
 410
 411     if (!ca || ca->magic != CATADMIN_MAGIC || !ci || ci->magic != CATINFO_MAGIC)
 412     {
 413         SetLastError(ERROR_INVALID_PARAMETER);
 414         return FALSE;
 415     }
 416     ci->magic = 0;
 417     return HeapFree(GetProcessHeap(), 0, ci);
 418 }
 419
 420 /***********************************************************************
 421  *      CryptCATAdminReleaseContext (WINTRUST.@)
 422  *
 423  * Release a catalog administrator context handle.
 424  *
 425  * PARAMS
 426  *   catAdmin  [I] Context handle.
 427  *   dwFlags   [I] Reserved.
 428  *
 429  * RETURNS
 430  *   Success: TRUE.
 431  *   Failure: FALSE.
 432  *
 433  */
 434 BOOL WINAPI CryptCATAdminReleaseContext(HCATADMIN hCatAdmin, DWORD dwFlags )
 435 {
 436     struct catadmin *ca = hCatAdmin;
 437
 438     TRACE("%p %x\n", hCatAdmin, dwFlags);
 439
 440     if (!ca || ca->magic != CATADMIN_MAGIC)
 441     {
 442         SetLastError(ERROR_INVALID_PARAMETER);
 443         return FALSE;
 444     }
 445     if (ca->find != INVALID_HANDLE_VALUE) FindClose(ca->find);
 446     ca->magic = 0;
 447     return HeapFree(GetProcessHeap(), 0, ca);
 448 }
 449
 450 /***********************************************************************
 451  *      CryptCATAdminRemoveCatalog (WINTRUST.@)
 452  *
 453  * Remove a catalog file.
 454  *
 455  * PARAMS
 456  *   catAdmin         [I] Context handle.
 457  *   pwszCatalogFile  [I] Catalog file.
 458  *   dwFlags          [I] Reserved.
 459  *
 460  * RETURNS
 461  *   Success: TRUE.
 462  *   Failure: FALSE.
 463  *
 464  */
 465 BOOL WINAPI CryptCATAdminRemoveCatalog(HCATADMIN hCatAdmin, LPCWSTR pwszCatalogFile, DWORD dwFlags)
 466 {
 467     struct catadmin *ca = hCatAdmin;
 468
 469     TRACE("%p %s %x\n", hCatAdmin, debugstr_w(pwszCatalogFile), dwFlags);
 470
 471     if (!ca || ca->magic != CATADMIN_MAGIC)
 472     {
 473         SetLastError(ERROR_INVALID_PARAMETER);
 474         return FALSE;
 475     }
 476
 477     /* Only delete when there is a filename and no path */
 478     if (pwszCatalogFile && pwszCatalogFile[0] != 0 &&
 479         !strchrW(pwszCatalogFile, '\\') && !strchrW(pwszCatalogFile, '/') &&
 480         !strchrW(pwszCatalogFile, ':'))
 481     {
 482         static const WCHAR slashW[] = {'\\',0};
 483         WCHAR *target;
 484         DWORD len;
 485
 486         len = strlenW(ca->path) + strlenW(pwszCatalogFile) + 2;
 487         if (!(target = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 488         {
 489             SetLastError(ERROR_OUTOFMEMORY);
 490             return FALSE;
 491         }
 492         strcpyW(target, ca->path);
 493         strcatW(target, slashW);
 494         strcatW(target, pwszCatalogFile);
 495
 496         DeleteFileW(target);
 497
 498         HeapFree(GetProcessHeap(), 0, target);
 499     }
 500
 501     return TRUE;
 502 }
 503
 504 /***********************************************************************
 505  *      CryptCATAdminResolveCatalogPath  (WINTRUST.@)
 506  */
 507 BOOL WINAPI CryptCATAdminResolveCatalogPath(HCATADMIN hcatadmin, WCHAR *catalog_file,
 508                                             CATALOG_INFO *info, DWORD flags)
 509 {
 510     static const WCHAR slashW[] = {'\\',0};
 511     struct catadmin *ca = hcatadmin;
 512
 513     TRACE("%p %s %p %x\n", hcatadmin, debugstr_w(catalog_file), info, flags);
 514
 515     if (!ca || ca->magic != CATADMIN_MAGIC || !info || info->cbStruct != sizeof(*info) || flags)
 516     {
 517         SetLastError(ERROR_INVALID_PARAMETER);
 518         return FALSE;
 519     }
 520     strcpyW(info->wszCatalogFile, ca->path);
 521     strcatW(info->wszCatalogFile, slashW);
 522     strcatW(info->wszCatalogFile, catalog_file);
 523
 524     return TRUE;
 525 }
 526
 527 /***********************************************************************
 528  *      CryptCATClose  (WINTRUST.@)
 529  */
 530 BOOL WINAPI CryptCATClose(HANDLE hCatalog)
 531 {
 532     struct cryptcat *cc = hCatalog;
 533
 534     TRACE("(%p)\n", hCatalog);
 535
 536     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 537     {
 538         SetLastError(ERROR_INVALID_PARAMETER);
 539         return FALSE;
 540     }
 541     HeapFree(GetProcessHeap(), 0, cc->attr);
 542     HeapFree(GetProcessHeap(), 0, cc->inner);
 543     CryptMsgClose(cc->msg);
 544
 545     cc->magic = 0;
 546     HeapFree(GetProcessHeap(), 0, cc);
 547     return TRUE;
 548 }
 549
 550 /***********************************************************************
 551  *      CryptCATGetAttrInfo  (WINTRUST.@)
 552  */
 553 CRYPTCATATTRIBUTE * WINAPI CryptCATGetAttrInfo(HANDLE hCatalog, CRYPTCATMEMBER *member, LPWSTR tag)
 554 {
 555     struct cryptcat *cc = hCatalog;
 556
 557     FIXME("%p, %p, %s\n", hCatalog, member, debugstr_w(tag));
 558
 559     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 560     {
 561         SetLastError(ERROR_INVALID_PARAMETER);
 562         return NULL;
 563     }
 564     SetLastError(CRYPT_E_NOT_FOUND);
 565     return NULL;
 566 }
 567
 568 /***********************************************************************
 569  *      CryptCATGetCatAttrInfo  (WINTRUST.@)
 570  */
 571 CRYPTCATATTRIBUTE * WINAPI CryptCATGetCatAttrInfo(HANDLE hCatalog, LPWSTR tag)
 572 {
 573     struct cryptcat *cc = hCatalog;
 574
 575     FIXME("%p, %s\n", hCatalog, debugstr_w(tag));
 576
 577     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 578     {
 579         SetLastError(ERROR_INVALID_PARAMETER);
 580         return NULL;
 581     }
 582     SetLastError(CRYPT_E_NOT_FOUND);
 583     return NULL;
 584 }
 585
 586 CRYPTCATMEMBER * WINAPI CryptCATGetMemberInfo(HANDLE hCatalog, LPWSTR tag)
 587 {
 588     struct cryptcat *cc = hCatalog;
 589
 590     FIXME("%p, %s\n", hCatalog, debugstr_w(tag));
 591
 592     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 593     {
 594         SetLastError(ERROR_INVALID_PARAMETER);
 595         return NULL;
 596     }
 597     SetLastError(CRYPT_E_NOT_FOUND);
 598     return NULL;
 599 }
 600
 601 /***********************************************************************
 602  *      CryptCATEnumerateAttr  (WINTRUST.@)
 603  */
 604 CRYPTCATATTRIBUTE * WINAPI CryptCATEnumerateAttr(HANDLE hCatalog, CRYPTCATMEMBER *member, CRYPTCATATTRIBUTE *prev)
 605 {
 606     struct cryptcat *cc = hCatalog;
 607
 608     FIXME("%p, %p, %p\n", hCatalog, member, prev);
 609
 610     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 611     {
 612         SetLastError(ERROR_INVALID_PARAMETER);
 613         return NULL;
 614     }
 615     SetLastError(CRYPT_E_NOT_FOUND);
 616     return NULL;
 617 }
 618
 619 /***********************************************************************
 620  *      CryptCATEnumerateCatAttr  (WINTRUST.@)
 621  */
 622 CRYPTCATATTRIBUTE * WINAPI CryptCATEnumerateCatAttr(HANDLE hCatalog, CRYPTCATATTRIBUTE *prev)
 623 {
 624     struct cryptcat *cc = hCatalog;
 625
 626     FIXME("%p, %p\n", hCatalog, prev);
 627
 628     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 629     {
 630         SetLastError(ERROR_INVALID_PARAMETER);
 631         return NULL;
 632     }
 633     SetLastError(CRYPT_E_NOT_FOUND);
 634     return NULL;
 635 }
 636
 637 /***********************************************************************
 638  *      CryptCATEnumerateMember  (WINTRUST.@)
 639  */
 640 CRYPTCATMEMBER * WINAPI CryptCATEnumerateMember(HANDLE hCatalog, CRYPTCATMEMBER *prev)
 641 {
 642     struct cryptcat *cc = hCatalog;
 643     CRYPTCATMEMBER *member = prev;
 644     CTL_ENTRY *entry;
 645     DWORD size, i;
 646
 647     TRACE("%p, %p\n", hCatalog, prev);
 648
 649     if (!hCatalog || hCatalog == INVALID_HANDLE_VALUE || cc->magic != CRYPTCAT_MAGIC)
 650     {
 651         SetLastError(ERROR_INVALID_PARAMETER);
 652         return NULL;
 653     }
 654
 655     /* dumping the contents makes me think that dwReserved is the iteration number */
 656     if (!member)
 657     {
 658         if (!(member = HeapAlloc(GetProcessHeap(), 0, sizeof(*member))))
 659         {
 660             SetLastError(ERROR_OUTOFMEMORY);
 661             return NULL;
 662         }
 663         member->cbStruct = sizeof(*member);
 664         member->pwszFileName = member->pwszReferenceTag = NULL;
 665         member->dwReserved = 0;
 666         member->hReserved = NULL;
 667         member->gSubjectType = cc->subject;
 668         member->fdwMemberFlags = 0;
 669         member->pIndirectData = NULL;
 670         member->dwCertVersion = cc->inner->dwVersion;
 671     }
 672     else member->dwReserved++;
 673
 674     if (member->dwReserved >= cc->inner->cCTLEntry)
 675     {
 676         SetLastError(ERROR_INVALID_PARAMETER);
 677         goto error;
 678     }
 679
 680     /* list them backwards, like native */
 681     entry = &cc->inner->rgCTLEntry[cc->inner->cCTLEntry - member->dwReserved - 1];
 682
 683     member->sEncodedIndirectData.cbData = member->sEncodedMemberInfo.cbData = 0;
 684     member->sEncodedIndirectData.pbData = member->sEncodedMemberInfo.pbData = NULL;
 685     HeapFree(GetProcessHeap(), 0, member->pIndirectData);
 686     member->pIndirectData = NULL;
 687
 688     for (i = 0; i < entry->cAttribute; i++)
 689     {
 690         CRYPT_ATTRIBUTE *attr = entry->rgAttribute + i;
 691
 692         if (attr->cValue != 1)
 693         {
 694             ERR("Can't handle attr->cValue of %u\n", attr->cValue);
 695             continue;
 696         }
 697         if (!strcmp(attr->pszObjId, CAT_MEMBERINFO_OBJID))
 698         {
 699             CAT_MEMBERINFO *mi;
 700             BOOL ret;
 701
 702             member->sEncodedMemberInfo.cbData = attr->rgValue->cbData;
 703             member->sEncodedMemberInfo.pbData = attr->rgValue->pbData;
 704
 705             CryptDecodeObject(cc->encoding, CAT_MEMBERINFO_OBJID, attr->rgValue->pbData, attr->rgValue->cbData, 0, NULL, &size);
 706
 707             if (!(mi = HeapAlloc(GetProcessHeap(), 0, size)))
 708             {
 709                 SetLastError(ERROR_OUTOFMEMORY);
 710                 goto error;
 711             }
 712             ret = CryptDecodeObject(cc->encoding, CAT_MEMBERINFO_OBJID, attr->rgValue->pbData, attr->rgValue->cbData, 0, mi, &size);
 713             if (ret)
 714             {
 715                 UNICODE_STRING guid;
 716
 717                 member->dwCertVersion = mi->dwCertVersion;
 718                 RtlInitUnicodeString(&guid, mi->pwszSubjGuid);
 719                 if (RtlGUIDFromString(&guid, &member->gSubjectType))
 720                 {
 721                     HeapFree(GetProcessHeap(), 0, mi);
 722                     goto error;
 723                 }
 724             }
 725             HeapFree(GetProcessHeap(), 0, mi);
 726             if (!ret) goto error;
 727         }
 728         else if (!strcmp(attr->pszObjId, SPC_INDIRECT_DATA_OBJID))
 729         {
 730             /* SPC_INDIRECT_DATA_CONTENT is equal to SIP_INDIRECT_DATA */
 731
 732             member->sEncodedIndirectData.cbData = attr->rgValue->cbData;
 733             member->sEncodedIndirectData.pbData = attr->rgValue->pbData;
 734
 735             CryptDecodeObject(cc->encoding, SPC_INDIRECT_DATA_OBJID, attr->rgValue->pbData, attr->rgValue->cbData, 0, NULL, &size);
 736
 737             if (!(member->pIndirectData = HeapAlloc(GetProcessHeap(), 0, size)))
 738             {
 739                 SetLastError(ERROR_OUTOFMEMORY);
 740                 goto error;
 741             }
 742             CryptDecodeObject(cc->encoding, SPC_INDIRECT_DATA_OBJID, attr->rgValue->pbData, attr->rgValue->cbData, 0, member->pIndirectData, &size);
 743         }
 744         else
 745             /* this object id should probably be handled in CryptCATEnumerateAttr */
 746             FIXME("unhandled object id \"%s\"\n", attr->pszObjId);
 747     }
 748
 749     if (!member->sEncodedMemberInfo.cbData || !member->sEncodedIndirectData.cbData)
 750     {
 751         ERR("Corrupted catalog entry?\n");
 752         SetLastError(CRYPT_E_ATTRIBUTES_MISSING);
 753         goto error;
 754     }
 755     size = (2 * member->pIndirectData->Digest.cbData + 1) * sizeof(WCHAR);
 756     if (member->pwszReferenceTag)
 757         member->pwszReferenceTag = HeapReAlloc(GetProcessHeap(), 0, member->pwszReferenceTag, size);
 758     else
 759         member->pwszReferenceTag = HeapAlloc(GetProcessHeap(), 0, size);
 760
 761     if (!member->pwszReferenceTag)
 762     {
 763         SetLastError(ERROR_OUTOFMEMORY);
 764         goto error;
 765     }
 766     /* FIXME: reference tag is usually the file hash but doesn't have to be */
 767     for (i = 0; i < member->pIndirectData->Digest.cbData; i++)
 768     {
 769         DWORD sub;
 770
 771         sub = member->pIndirectData->Digest.pbData[i] >> 4;
 772         member->pwszReferenceTag[i * 2] = (sub < 10 ? '0' + sub : 'A' + sub - 10);
 773         sub = member->pIndirectData->Digest.pbData[i] & 0xf;
 774         member->pwszReferenceTag[i * 2 + 1] = (sub < 10 ? '0' + sub : 'A' + sub - 10);
 775     }
 776     member->pwszReferenceTag[i * 2] = 0;
 777     return member;
 778
 779 error:
 780     HeapFree(GetProcessHeap(), 0, member->pIndirectData);
 781     HeapFree(GetProcessHeap(), 0, member->pwszReferenceTag);
 782     HeapFree(GetProcessHeap(), 0, member);
 783     return NULL;
 784 }
 785
 786 static CTL_INFO *decode_inner_content(HANDLE hmsg, DWORD encoding, DWORD *len)
 787 {
 788     DWORD size;
 789     LPSTR oid = NULL;
 790     BYTE *buffer = NULL;
 791     CTL_INFO *inner = NULL;
 792
 793     if (!CryptMsgGetParam(hmsg, CMSG_INNER_CONTENT_TYPE_PARAM, 0, NULL, &size)) return NULL;
 794     if (!(oid = HeapAlloc(GetProcessHeap(), 0, size)))
 795     {
 796         SetLastError(ERROR_OUTOFMEMORY);
 797         return NULL;
 798     }
 799     if (!CryptMsgGetParam(hmsg, CMSG_INNER_CONTENT_TYPE_PARAM, 0, oid, &size)) goto out;
 800     if (!CryptMsgGetParam(hmsg, CMSG_CONTENT_PARAM, 0, NULL, &size)) goto out;
 801     if (!(buffer = HeapAlloc(GetProcessHeap(), 0, size)))
 802     {
 803         SetLastError(ERROR_OUTOFMEMORY);
 804         goto out;
 805     }
 806     if (!CryptMsgGetParam(hmsg, CMSG_CONTENT_PARAM, 0, buffer, &size)) goto out;
 807     if (!CryptDecodeObject(encoding, oid, buffer, size, 0, NULL, &size)) goto out;
 808     if (!(inner = HeapAlloc(GetProcessHeap(), 0, size)))
 809     {
 810         SetLastError(ERROR_OUTOFMEMORY);
 811         goto out;
 812     }
 813     if (!CryptDecodeObject(encoding, oid, buffer, size, 0, inner, &size)) goto out;
 814     *len = size;
 815
 816 out:
 817     HeapFree(GetProcessHeap(), 0, oid);
 818     HeapFree(GetProcessHeap(), 0, buffer);
 819     return inner;
 820 }
 821
 822 /***********************************************************************
 823  *      CryptCATCatalogInfoFromContext  (WINTRUST.@)
 824  */
 825 BOOL WINAPI CryptCATCatalogInfoFromContext(HCATINFO hcatinfo, CATALOG_INFO *info, DWORD flags)
 826 {
 827     struct catinfo *ci = hcatinfo;
 828
 829     TRACE("%p, %p, %x\n", hcatinfo, info, flags);
 830
 831     if (!hcatinfo || hcatinfo == INVALID_HANDLE_VALUE || ci->magic != CATINFO_MAGIC ||
 832         flags || !info || info->cbStruct != sizeof(*info))
 833     {
 834         SetLastError(ERROR_INVALID_PARAMETER);
 835         return FALSE;
 836     }
 837     strcpyW(info->wszCatalogFile, ci->file);
 838     return TRUE;
 839 }
 840
 841 /***********************************************************************
 842  *      CryptCATOpen  (WINTRUST.@)
 843  */
 844 HANDLE WINAPI CryptCATOpen(LPWSTR pwszFileName, DWORD fdwOpenFlags, HCRYPTPROV hProv,
 845                            DWORD dwPublicVersion, DWORD dwEncodingType)
 846 {
 847     HANDLE file, hmsg;
 848     BYTE *buffer = NULL;
 849     DWORD size, flags = OPEN_EXISTING;
 850     struct cryptcat *cc;
 851
 852     TRACE("%s, %x, %lx, %x, %x\n", debugstr_w(pwszFileName), fdwOpenFlags,
 853           hProv, dwPublicVersion, dwEncodingType);
 854
 855     if (!pwszFileName)
 856     {
 857         SetLastError(ERROR_INVALID_PARAMETER);
 858         return INVALID_HANDLE_VALUE;
 859     }
 860
 861     if (!dwPublicVersion) dwPublicVersion = 0x00000100;
 862     if (!dwEncodingType)  dwEncodingType  = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
 863
 864     if (fdwOpenFlags & CRYPTCAT_OPEN_ALWAYS)    flags |= OPEN_ALWAYS;
 865     if (fdwOpenFlags & CRYPTCAT_OPEN_CREATENEW) flags |= CREATE_NEW;
 866
 867     file = CreateFileW(pwszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, flags, 0, NULL);
 868     if (file == INVALID_HANDLE_VALUE) return INVALID_HANDLE_VALUE;
 869
 870     size = GetFileSize(file, NULL);
 871     if (!(buffer = HeapAlloc(GetProcessHeap(), 0, size)))
 872     {
 873         CloseHandle(file);
 874         SetLastError(ERROR_OUTOFMEMORY);
 875         return INVALID_HANDLE_VALUE;
 876     }
 877     if (!(hmsg = CryptMsgOpenToDecode(dwEncodingType, 0, 0, hProv, NULL, NULL)))
 878     {
 879         CloseHandle(file);
 880         HeapFree(GetProcessHeap(), 0, buffer);
 881         return INVALID_HANDLE_VALUE;
 882     }
 883     if (!ReadFile(file, buffer, size, &size, NULL) || !CryptMsgUpdate(hmsg, buffer, size, TRUE))
 884     {
 885         CloseHandle(file);
 886         HeapFree(GetProcessHeap(), 0, buffer);
 887         CryptMsgClose(hmsg);
 888         return INVALID_HANDLE_VALUE;
 889     }
 890     HeapFree(GetProcessHeap(), 0, buffer);
 891     CloseHandle(file);
 892
 893     size = sizeof(DWORD);
 894     if (!(cc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*cc))))
 895     {
 896         CryptMsgClose(hmsg);
 897         SetLastError(ERROR_OUTOFMEMORY);
 898         return INVALID_HANDLE_VALUE;
 899     }
 900
 901     cc->msg = hmsg;
 902     cc->encoding = dwEncodingType;
 903     if (CryptMsgGetParam(hmsg, CMSG_ATTR_CERT_COUNT_PARAM, 0, &cc->attr_count, &size))
 904     {
 905         DWORD i, sum = 0;
 906         BYTE *p;
 907
 908         for (i = 0; i < cc->attr_count; i++)
 909         {
 910             if (!CryptMsgGetParam(hmsg, CMSG_ATTR_CERT_PARAM, i, NULL, &size))
 911             {
 912                 CryptMsgClose(hmsg);
 913                 return INVALID_HANDLE_VALUE;
 914             }
 915             sum += size;
 916         }
 917         if (!(cc->attr = HeapAlloc(GetProcessHeap(), 0, sizeof(*cc->attr) * cc->attr_count + sum)))
 918         {
 919             CryptMsgClose(hmsg);
 920             SetLastError(ERROR_OUTOFMEMORY);
 921             return INVALID_HANDLE_VALUE;
 922         }
 923         p = (BYTE *)(cc->attr + cc->attr_count);
 924         for (i = 0; i < cc->attr_count; i++)
 925         {
 926             if (!CryptMsgGetParam(hmsg, CMSG_ATTR_CERT_PARAM, i, NULL, &size))
 927             {
 928                 CryptMsgClose(hmsg);
 929                 HeapFree(GetProcessHeap(), 0, cc->attr);
 930                 return INVALID_HANDLE_VALUE;
 931             }
 932             if (!CryptMsgGetParam(hmsg, CMSG_ATTR_CERT_PARAM, i, p, &size))
 933             {
 934                 CryptMsgClose(hmsg);
 935                 HeapFree(GetProcessHeap(), 0, cc->attr);
 936                 return INVALID_HANDLE_VALUE;
 937             }
 938             p += size;
 939         }
 940         cc->inner = decode_inner_content(hmsg, dwEncodingType, &cc->inner_len);
 941         if (!cc->inner || !CryptSIPRetrieveSubjectGuid(pwszFileName, NULL, &cc->subject))
 942         {
 943             CryptMsgClose(hmsg);
 944             HeapFree(GetProcessHeap(), 0, cc->attr);
 945             HeapFree(GetProcessHeap(), 0, cc->inner);
 946             HeapFree(GetProcessHeap(), 0, cc);
 947             return INVALID_HANDLE_VALUE;
 948         }
 949         cc->magic = CRYPTCAT_MAGIC;
 950         return cc;
 951     }
 952     return INVALID_HANDLE_VALUE;
 953 }
 954
 955 /***********************************************************************
 956  *      CryptSIPCreateIndirectData  (WINTRUST.@)
 957  */
 958 BOOL WINAPI CryptSIPCreateIndirectData(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pcbIndirectData,
 959                                        SIP_INDIRECT_DATA* pIndirectData)
 960 {
 961     FIXME("(%p %p %p) stub\n", pSubjectInfo, pcbIndirectData, pIndirectData);
 962
 963     return FALSE;
 964 }
 965
 966
 967 /***********************************************************************
 968  *      CryptCATCDFClose  (WINTRUST.@)
 969  */
 970 BOOL WINAPI CryptCATCDFClose(CRYPTCATCDF *pCDF)
 971 {
 972     FIXME("(%p) stub\n", pCDF);
 973
 974     return FALSE;
 975 }
 976
 977 /***********************************************************************
 978  *      CryptCATCDFEnumCatAttributes  (WINTRUST.@)
 979  */
 980 CRYPTCATATTRIBUTE * WINAPI CryptCATCDFEnumCatAttributes(CRYPTCATCDF *pCDF,
 981                                                         CRYPTCATATTRIBUTE *pPrevAttr,
 982                                                         PFN_CDF_PARSE_ERROR_CALLBACK pfnParseError)
 983 {
 984     FIXME("(%p %p %p) stub\n", pCDF, pPrevAttr, pfnParseError);
 985
 986     return NULL;
 987 }
 988
 989 /***********************************************************************
 990  *      CryptCATCDFEnumMembersByCDFTagEx  (WINTRUST.@)
 991  */
 992 LPWSTR WINAPI CryptCATCDFEnumMembersByCDFTagEx(CRYPTCATCDF *pCDF, LPWSTR pwszPrevCDFTag,
 993                                                PFN_CDF_PARSE_ERROR_CALLBACK pfnParseError,
 994                                                CRYPTCATMEMBER **ppMember, BOOL fContinueOnError,
 995                                                LPVOID pvReserved)
 996 {
 997     FIXME("(%p %s %p %p %d %p) stub\n", pCDF, debugstr_w(pwszPrevCDFTag), pfnParseError,
 998           ppMember, fContinueOnError, pvReserved);
 999
1000     return NULL;
1001 }
1002
1003 /***********************************************************************
1004  *      CryptCATCDFOpen  (WINTRUST.@)
1005  */
1006 CRYPTCATCDF * WINAPI CryptCATCDFOpen(LPWSTR pwszFilePath,
1007                                      PFN_CDF_PARSE_ERROR_CALLBACK pfnParseError)
1008 {
1009     FIXME("(%s %p) stub\n", debugstr_w(pwszFilePath), pfnParseError);
1010
1011     return NULL;
1012 }
1013
1014 static BOOL WINTRUST_GetSignedMsgFromPEFile(SIP_SUBJECTINFO *pSubjectInfo,
1015  DWORD *pdwEncodingType, DWORD dwIndex, DWORD *pcbSignedDataMsg,
1016  BYTE *pbSignedDataMsg)
1017 {
1018     BOOL ret;
1019     WIN_CERTIFICATE *pCert = NULL;
1020
1021     TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
1022           pcbSignedDataMsg, pbSignedDataMsg);
1023
1024     if (!pbSignedDataMsg)
1025     {
1026         WIN_CERTIFICATE cert;
1027
1028         /* app hasn't passed buffer, just get the length */
1029         ret = ImageGetCertificateHeader(pSubjectInfo->hFile, dwIndex, &cert);
1030         if (ret)
1031             *pcbSignedDataMsg = cert.dwLength;
1032     }
1033     else
1034     {
1035         DWORD len = 0;
1036
1037         ret = ImageGetCertificateData(pSubjectInfo->hFile, dwIndex, NULL, &len);
1038         if (GetLastError() != ERROR_INSUFFICIENT_BUFFER)
1039             goto error;
1040         pCert = HeapAlloc(GetProcessHeap(), 0, len);
1041         if (!pCert)
1042         {
1043             ret = FALSE;
1044             goto error;
1045         }
1046         ret = ImageGetCertificateData(pSubjectInfo->hFile, dwIndex, pCert,
1047          &len);
1048         if (!ret)
1049             goto error;
1050         if (*pcbSignedDataMsg < pCert->dwLength)
1051         {
1052             *pcbSignedDataMsg = pCert->dwLength;
1053             SetLastError(ERROR_INSUFFICIENT_BUFFER);
1054             ret = FALSE;
1055         }
1056         else
1057         {
1058             memcpy(pbSignedDataMsg, pCert->bCertificate, pCert->dwLength);
1059             switch (pCert->wCertificateType)
1060             {
1061             case WIN_CERT_TYPE_X509:
1062                 *pdwEncodingType = X509_ASN_ENCODING;
1063                 break;
1064             case WIN_CERT_TYPE_PKCS_SIGNED_DATA:
1065                 *pdwEncodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
1066                 break;
1067             default:
1068                 FIXME("don't know what to do for encoding type %d\n",
1069                  pCert->wCertificateType);
1070                 *pdwEncodingType = 0;
1071             }
1072         }
1073     }
1074 error:
1075     HeapFree(GetProcessHeap(), 0, pCert);
1076     return ret;
1077 }
1078
1079 /* structure offsets */
1080 #define cfhead_Signature         (0x00)
1081 #define cfhead_CabinetSize       (0x08)
1082 #define cfhead_MinorVersion      (0x18)
1083 #define cfhead_MajorVersion      (0x19)
1084 #define cfhead_Flags             (0x1E)
1085 #define cfhead_SIZEOF            (0x24)
1086 #define cfheadext_HeaderReserved (0x00)
1087 #define cfheadext_SIZEOF         (0x04)
1088 #define cfsigninfo_CertOffset    (0x04)
1089 #define cfsigninfo_CertSize      (0x08)
1090 #define cfsigninfo_SIZEOF        (0x0C)
1091
1092 /* flags */
1093 #define cfheadRESERVE_PRESENT          (0x0004)
1094
1095 /* endian-neutral reading of little-endian data */
1096 #define EndGetI32(a)  ((((a)[3])<<24)|(((a)[2])<<16)|(((a)[1])<<8)|((a)[0]))
1097 #define EndGetI16(a)  ((((a)[1])<<8)|((a)[0]))
1098
1099 /* For documentation purposes only:  this is the structure in the reserved
1100  * area of a signed cabinet file.  The cert offset indicates where in the
1101  * cabinet file the signature resides, and the count indicates its size.
1102  */
1103 typedef struct _CAB_SIGNINFO
1104 {
1105     WORD unk0; /* always 0? */
1106     WORD unk1; /* always 0x0010? */
1107     DWORD dwCertOffset;
1108     DWORD cbCertBlock;
1109 } CAB_SIGNINFO, *PCAB_SIGNINFO;
1110
1111 static BOOL WINTRUST_GetSignedMsgFromCabFile(SIP_SUBJECTINFO *pSubjectInfo,
1112  DWORD *pdwEncodingType, DWORD dwIndex, DWORD *pcbSignedDataMsg,
1113  BYTE *pbSignedDataMsg)
1114 {
1115     int header_resv;
1116     LONG base_offset, cabsize;
1117     USHORT flags;
1118     BYTE buf[64];
1119     DWORD cert_offset, cert_size, dwRead;
1120
1121     TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
1122           pcbSignedDataMsg, pbSignedDataMsg);
1123
1124     /*
1125      * FIXME: I just noticed that I am memorizing the initial file pointer
1126      * offset and restoring it before reading in the rest of the header
1127      * information in the cabinet.  Perhaps that's correct -- that is, perhaps
1128      * this API is supposed to support "streaming" cabinets which are embedded
1129      * in other files, or cabinets which begin at file offsets other than zero.
1130      * Otherwise, I should instead go to the absolute beginning of the file.
1131      * (Either way, the semantics of wine's FDICopy require me to leave the
1132      * file pointer where it is afterwards -- If Windows does not do so, we
1133      * ought to duplicate the native behavior in the FDIIsCabinet API, not here.
1134      *
1135      * So, the answer lies in Windows; will native cabinet.dll recognize a
1136      * cabinet "file" embedded in another file?  Note that cabextract.c does
1137      * support this, which implies that Microsoft's might.  I haven't tried it
1138      * yet so I don't know.  ATM, most of wine's FDI cabinet routines (except
1139      * this one) would not work in this way.  To fix it, we could just make the
1140      * various references to absolute file positions in the code relative to an
1141      * initial "beginning" offset.  Because the FDICopy API doesn't take a
1142      * file-handle like this one, we would therein need to search through the
1143      * file for the beginning of the cabinet (as we also do in cabextract.c).
1144      * Note that this limits us to a maximum of one cabinet per. file: the first.
1145      *
1146      * So, in summary: either the code below is wrong, or the rest of fdi.c is
1147      * wrong... I cannot imagine that both are correct ;)  One of these flaws
1148      * should be fixed after determining the behavior on Windows.   We ought
1149      * to check both FDIIsCabinet and FDICopy for the right behavior.
1150      *
1151      * -gmt
1152      */
1153
1154     /* get basic offset & size info */
1155     base_offset = SetFilePointer(pSubjectInfo->hFile, 0L, NULL, SEEK_CUR);
1156
1157     if (SetFilePointer(pSubjectInfo->hFile, 0, NULL, SEEK_END) == INVALID_SET_FILE_POINTER)
1158     {
1159         TRACE("seek error\n");
1160         return FALSE;
1161     }
1162
1163     cabsize = SetFilePointer(pSubjectInfo->hFile, 0L, NULL, SEEK_CUR);
1164     if ((cabsize == -1) || (base_offset == -1) ||
1165      (SetFilePointer(pSubjectInfo->hFile, base_offset, NULL, SEEK_SET) == INVALID_SET_FILE_POINTER))
1166     {
1167         TRACE("seek error\n");
1168         return FALSE;
1169     }
1170
1171     /* read in the CFHEADER */
1172     if (!ReadFile(pSubjectInfo->hFile, buf, cfhead_SIZEOF, &dwRead, NULL) ||
1173      dwRead != cfhead_SIZEOF)
1174     {
1175         TRACE("reading header failed\n");
1176         return FALSE;
1177     }
1178
1179     /* check basic MSCF signature */
1180     if (EndGetI32(buf+cfhead_Signature) != 0x4643534d)
1181     {
1182         WARN("cabinet signature not present\n");
1183         return FALSE;
1184     }
1185
1186     /* Ignore the number of folders and files and the set and cabinet IDs */
1187
1188     /* check the header revision */
1189     if ((buf[cfhead_MajorVersion] > 1) ||
1190         (buf[cfhead_MajorVersion] == 1 && buf[cfhead_MinorVersion] > 3))
1191     {
1192         WARN("cabinet format version > 1.3\n");
1193         return FALSE;
1194     }
1195
1196     /* pull the flags out */
1197     flags = EndGetI16(buf+cfhead_Flags);
1198
1199     if (!(flags & cfheadRESERVE_PRESENT))
1200     {
1201         TRACE("no header present, not signed\n");
1202         return FALSE;
1203     }
1204
1205     if (!ReadFile(pSubjectInfo->hFile, buf, cfheadext_SIZEOF, &dwRead, NULL) ||
1206      dwRead != cfheadext_SIZEOF)
1207     {
1208         ERR("bunk reserve-sizes?\n");
1209         return FALSE;
1210     }
1211
1212     header_resv = EndGetI16(buf+cfheadext_HeaderReserved);
1213     if (!header_resv)
1214     {
1215         TRACE("no header_resv, not signed\n");
1216         return FALSE;
1217     }
1218     else if (header_resv < cfsigninfo_SIZEOF)
1219     {
1220         TRACE("header_resv too small, not signed\n");
1221         return FALSE;
1222     }
1223
1224     if (header_resv > 60000)
1225     {
1226         WARN("WARNING; header reserved space > 60000\n");
1227     }
1228
1229     if (!ReadFile(pSubjectInfo->hFile, buf, cfsigninfo_SIZEOF, &dwRead, NULL) ||
1230      dwRead != cfsigninfo_SIZEOF)
1231     {
1232         ERR("couldn't read reserve\n");
1233         return FALSE;
1234     }
1235
1236     cert_offset = EndGetI32(buf+cfsigninfo_CertOffset);
1237     TRACE("cert_offset: %d\n", cert_offset);
1238     cert_size = EndGetI32(buf+cfsigninfo_CertSize);
1239     TRACE("cert_size: %d\n", cert_size);
1240
1241     /* The redundant checks are to avoid wraparound */
1242     if (cert_offset > cabsize || cert_size > cabsize ||
1243      cert_offset + cert_size > cabsize)
1244     {
1245         WARN("offset beyond file, not attempting to read\n");
1246         return FALSE;
1247     }
1248
1249     SetFilePointer(pSubjectInfo->hFile, base_offset, NULL, SEEK_SET);
1250     if (!pbSignedDataMsg)
1251     {
1252         *pcbSignedDataMsg = cert_size;
1253         return TRUE;
1254     }
1255     if (*pcbSignedDataMsg < cert_size)
1256     {
1257         *pcbSignedDataMsg = cert_size;
1258         SetLastError(ERROR_INSUFFICIENT_BUFFER);
1259         return FALSE;
1260     }
1261     if (SetFilePointer(pSubjectInfo->hFile, cert_offset, NULL, SEEK_SET) == INVALID_SET_FILE_POINTER)
1262     {
1263         ERR("couldn't seek to cert location\n");
1264         return FALSE;
1265     }
1266     if (!ReadFile(pSubjectInfo->hFile, pbSignedDataMsg, cert_size, &dwRead,
1267      NULL) || dwRead != cert_size)
1268     {
1269         ERR("couldn't read cert\n");
1270         return FALSE;
1271     }
1272     /* The encoding of the files I've seen appears to be in ASN.1
1273      * format, and there isn't a field indicating the type, so assume it
1274      * always is.
1275      */
1276     *pdwEncodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
1277     return TRUE;
1278 }
1279
1280 static BOOL WINTRUST_GetSignedMsgFromCatFile(SIP_SUBJECTINFO *pSubjectInfo,
1281  DWORD *pdwEncodingType, DWORD dwIndex, DWORD *pcbSignedDataMsg,
1282  BYTE *pbSignedDataMsg)
1283 {
1284     BOOL ret;
1285
1286     TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
1287           pcbSignedDataMsg, pbSignedDataMsg);
1288
1289     if (!pbSignedDataMsg)
1290     {
1291         *pcbSignedDataMsg = GetFileSize(pSubjectInfo->hFile, NULL);
1292          ret = TRUE;
1293     }
1294     else
1295     {
1296         DWORD len = GetFileSize(pSubjectInfo->hFile, NULL);
1297
1298         if (*pcbSignedDataMsg < len)
1299         {
1300             *pcbSignedDataMsg = len;
1301             SetLastError(ERROR_INSUFFICIENT_BUFFER);
1302             ret = FALSE;
1303         }
1304         else
1305         {
1306             ret = ReadFile(pSubjectInfo->hFile, pbSignedDataMsg, len,
1307              pcbSignedDataMsg, NULL);
1308             if (ret)
1309                 *pdwEncodingType = X509_ASN_ENCODING | PKCS_7_ASN_ENCODING;
1310         }
1311     }
1312     return ret;
1313 }
1314
1315 /***********************************************************************
1316  *      CryptSIPGetSignedDataMsg  (WINTRUST.@)
1317  */
1318 BOOL WINAPI CryptSIPGetSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD* pdwEncodingType,
1319                                        DWORD dwIndex, DWORD* pcbSignedDataMsg, BYTE* pbSignedDataMsg)
1320 {
1321     static const GUID unknown = { 0xC689AAB8, 0x8E78, 0x11D0, { 0x8C,0x47,
1322      0x00,0xC0,0x4F,0xC2,0x95,0xEE } };
1323     static const GUID cabGUID = { 0xC689AABA, 0x8E78, 0x11D0, { 0x8C,0x47,
1324      0x00,0xC0,0x4F,0xC2,0x95,0xEE } };
1325     static const GUID catGUID = { 0xDE351A43, 0x8E59, 0x11D0, { 0x8C,0x47,
1326      0x00,0xC0,0x4F,0xC2,0x95,0xEE }};
1327     BOOL ret;
1328
1329     TRACE("(%p %p %d %p %p)\n", pSubjectInfo, pdwEncodingType, dwIndex,
1330           pcbSignedDataMsg, pbSignedDataMsg);
1331
1332     if (!memcmp(pSubjectInfo->pgSubjectType, &unknown, sizeof(unknown)))
1333         ret = WINTRUST_GetSignedMsgFromPEFile(pSubjectInfo, pdwEncodingType,
1334          dwIndex, pcbSignedDataMsg, pbSignedDataMsg);
1335     else if (!memcmp(pSubjectInfo->pgSubjectType, &cabGUID, sizeof(cabGUID)))
1336         ret = WINTRUST_GetSignedMsgFromCabFile(pSubjectInfo, pdwEncodingType,
1337          dwIndex, pcbSignedDataMsg, pbSignedDataMsg);
1338     else if (!memcmp(pSubjectInfo->pgSubjectType, &catGUID, sizeof(catGUID)))
1339         ret = WINTRUST_GetSignedMsgFromCatFile(pSubjectInfo, pdwEncodingType,
1340          dwIndex, pcbSignedDataMsg, pbSignedDataMsg);
1341     else
1342     {
1343         FIXME("unimplemented for subject type %s\n",
1344          debugstr_guid(pSubjectInfo->pgSubjectType));
1345         ret = FALSE;
1346     }
1347
1348     TRACE("returning %d\n", ret);
1349     return ret;
1350 }
1351
1352 /***********************************************************************
1353  *      CryptSIPPutSignedDataMsg  (WINTRUST.@)
1354  */
1355 BOOL WINAPI CryptSIPPutSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo, DWORD pdwEncodingType,
1356                                        DWORD* pdwIndex, DWORD cbSignedDataMsg, BYTE* pbSignedDataMsg)
1357 {
1358     FIXME("(%p %d %p %d %p) stub\n", pSubjectInfo, pdwEncodingType, pdwIndex,
1359           cbSignedDataMsg, pbSignedDataMsg);
1360
1361     return FALSE;
1362 }
1363
1364 /***********************************************************************
1365  *      CryptSIPRemoveSignedDataMsg  (WINTRUST.@)
1366  */
1367 BOOL WINAPI CryptSIPRemoveSignedDataMsg(SIP_SUBJECTINFO* pSubjectInfo,
1368                                        DWORD dwIndex)
1369 {
1370     FIXME("(%p %d) stub\n", pSubjectInfo, dwIndex);
1371
1372     return FALSE;
1373 }
1374
1375 /***********************************************************************
1376  *      CryptSIPVerifyIndirectData  (WINTRUST.@)
1377  */
1378 BOOL WINAPI CryptSIPVerifyIndirectData(SIP_SUBJECTINFO* pSubjectInfo,
1379                                        SIP_INDIRECT_DATA* pIndirectData)
1380 {
1381     FIXME("(%p %p) stub\n", pSubjectInfo, pIndirectData);
1382
1383     return FALSE;
1384 }