git.oblomov.eu Git - wine/blob - dlls/crypt32/serialize.c

   1 /*
   2  * Copyright 2004-2007 Juan Lang
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20 #include "wine/port.h"
  21
  22 #include <stdarg.h>
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "wincrypt.h"
  26 #include "wine/debug.h"
  27 #include "wine/exception.h"
  28 #include "crypt32_private.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  31
  32 /* An extended certificate property in serialized form is prefixed by this
  33  * header.
  34  */
  35 typedef struct _WINE_CERT_PROP_HEADER
  36 {
  37     DWORD propID;
  38     DWORD unknown; /* always 1 */
  39     DWORD cb;
  40 } WINE_CERT_PROP_HEADER, *PWINE_CERT_PROP_HEADER;
  41
  42 static BOOL CRYPT_SerializeStoreElement(const void *context,
  43  const BYTE *encodedContext, DWORD cbEncodedContext, DWORD contextPropID,
  44  PCWINE_CONTEXT_INTERFACE contextInterface, DWORD dwFlags, BOOL omitHashes,
  45  BYTE *pbElement, DWORD *pcbElement)
  46 {
  47     BOOL ret;
  48
  49     TRACE("(%p, %p, %08x, %d, %p, %p)\n", context, contextInterface, dwFlags,
  50      omitHashes, pbElement, pcbElement);
  51
  52     if (context)
  53     {
  54         DWORD bytesNeeded = sizeof(WINE_CERT_PROP_HEADER) + cbEncodedContext;
  55         DWORD prop = 0;
  56
  57         ret = TRUE;
  58         do {
  59             prop = contextInterface->enumProps(context, prop);
  60             if (prop && (!omitHashes || !IS_CERT_HASH_PROP_ID(prop)))
  61             {
  62                 DWORD propSize = 0;
  63
  64                 ret = contextInterface->getProp(context, prop, NULL, &propSize);
  65                 if (ret)
  66                     bytesNeeded += sizeof(WINE_CERT_PROP_HEADER) + propSize;
  67             }
  68         } while (ret && prop != 0);
  69
  70         if (!pbElement)
  71         {
  72             *pcbElement = bytesNeeded;
  73             ret = TRUE;
  74         }
  75         else if (*pcbElement < bytesNeeded)
  76         {
  77             *pcbElement = bytesNeeded;
  78             SetLastError(ERROR_MORE_DATA);
  79             ret = FALSE;
  80         }
  81         else
  82         {
  83             PWINE_CERT_PROP_HEADER hdr;
  84             DWORD bufSize = 0;
  85             LPBYTE buf = NULL;
  86
  87             prop = 0;
  88             do {
  89                 prop = contextInterface->enumProps(context, prop);
  90                 if (prop && (!omitHashes || !IS_CERT_HASH_PROP_ID(prop)))
  91                 {
  92                     DWORD propSize = 0;
  93
  94                     ret = contextInterface->getProp(context, prop, NULL,
  95                      &propSize);
  96                     if (ret)
  97                     {
  98                         if (bufSize < propSize)
  99                         {
 100                             if (buf)
 101                                 buf = CryptMemRealloc(buf, propSize);
 102                             else
 103                                 buf = CryptMemAlloc(propSize);
 104                             bufSize = propSize;
 105                         }
 106                         if (buf)
 107                         {
 108                             ret = contextInterface->getProp(context, prop, buf,
 109                              &propSize);
 110                             if (ret)
 111                             {
 112                                 hdr = (PWINE_CERT_PROP_HEADER)pbElement;
 113                                 hdr->propID = prop;
 114                                 hdr->unknown = 1;
 115                                 hdr->cb = propSize;
 116                                 pbElement += sizeof(WINE_CERT_PROP_HEADER);
 117                                 if (propSize)
 118                                 {
 119                                     memcpy(pbElement, buf, propSize);
 120                                     pbElement += propSize;
 121                                 }
 122                             }
 123                         }
 124                         else
 125                             ret = FALSE;
 126                     }
 127                 }
 128             } while (ret && prop != 0);
 129             CryptMemFree(buf);
 130
 131             hdr = (PWINE_CERT_PROP_HEADER)pbElement;
 132             hdr->propID = contextPropID;
 133             hdr->unknown = 1;
 134             hdr->cb = cbEncodedContext;
 135             memcpy(pbElement + sizeof(WINE_CERT_PROP_HEADER),
 136              encodedContext, cbEncodedContext);
 137         }
 138     }
 139     else
 140         ret = FALSE;
 141     return ret;
 142 }
 143
 144 BOOL WINAPI CertSerializeCertificateStoreElement(PCCERT_CONTEXT pCertContext,
 145  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 146 {
 147     return CRYPT_SerializeStoreElement(pCertContext,
 148      pCertContext->pbCertEncoded, pCertContext->cbCertEncoded,
 149      CERT_CERT_PROP_ID, pCertInterface, dwFlags, FALSE, pbElement, pcbElement);
 150 }
 151
 152 BOOL WINAPI CertSerializeCRLStoreElement(PCCRL_CONTEXT pCrlContext,
 153  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 154 {
 155     return CRYPT_SerializeStoreElement(pCrlContext,
 156      pCrlContext->pbCrlEncoded, pCrlContext->cbCrlEncoded,
 157      CERT_CRL_PROP_ID, pCRLInterface, dwFlags, FALSE, pbElement, pcbElement);
 158 }
 159
 160 BOOL WINAPI CertSerializeCTLStoreElement(PCCTL_CONTEXT pCtlContext,
 161  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 162 {
 163     return CRYPT_SerializeStoreElement(pCtlContext,
 164      pCtlContext->pbCtlEncoded, pCtlContext->cbCtlEncoded,
 165      CERT_CTL_PROP_ID, pCTLInterface, dwFlags, FALSE, pbElement, pcbElement);
 166 }
 167
 168 /* Looks for the property with ID propID in the buffer buf.  Returns a pointer
 169  * to its header if a valid header is found, NULL if not.  Valid means the
 170  * length of thte property won't overrun buf, and the unknown field is 1.
 171  */
 172 static const WINE_CERT_PROP_HEADER *CRYPT_findPropID(const BYTE *buf,
 173  DWORD size, DWORD propID)
 174 {
 175     const WINE_CERT_PROP_HEADER *ret = NULL;
 176     BOOL done = FALSE;
 177
 178     while (size && !ret && !done)
 179     {
 180         if (size < sizeof(WINE_CERT_PROP_HEADER))
 181         {
 182             SetLastError(CRYPT_E_FILE_ERROR);
 183             done = TRUE;
 184         }
 185         else
 186         {
 187             const WINE_CERT_PROP_HEADER *hdr =
 188              (const WINE_CERT_PROP_HEADER *)buf;
 189
 190             size -= sizeof(WINE_CERT_PROP_HEADER);
 191             buf += sizeof(WINE_CERT_PROP_HEADER);
 192             if (size < hdr->cb)
 193             {
 194                 SetLastError(E_INVALIDARG);
 195                 done = TRUE;
 196             }
 197             else if (!hdr->propID)
 198             {
 199                 /* assume a zero prop ID means the data are uninitialized, so
 200                  * stop looking.
 201                  */
 202                 done = TRUE;
 203             }
 204             else if (hdr->unknown != 1)
 205             {
 206                 SetLastError(ERROR_FILE_NOT_FOUND);
 207                 done = TRUE;
 208             }
 209             else if (hdr->propID == propID)
 210                 ret = hdr;
 211             else
 212             {
 213                 buf += hdr->cb;
 214                 size -= hdr->cb;
 215             }
 216         }
 217     }
 218     return ret;
 219 }
 220
 221 static BOOL CRYPT_ReadContextProp(
 222  const WINE_CONTEXT_INTERFACE *contextInterface, const void *context,
 223  const WINE_CERT_PROP_HEADER *hdr, const BYTE *pbElement, DWORD cbElement)
 224 {
 225     BOOL ret;
 226
 227     if (cbElement < hdr->cb)
 228     {
 229         SetLastError(E_INVALIDARG);
 230         ret = FALSE;
 231     }
 232     else if (hdr->unknown != 1)
 233     {
 234         SetLastError(ERROR_FILE_NOT_FOUND);
 235         ret = FALSE;
 236     }
 237     else if (hdr->propID != CERT_CERT_PROP_ID &&
 238      hdr->propID != CERT_CRL_PROP_ID && hdr->propID != CERT_CTL_PROP_ID)
 239     {
 240         /* Have to create a blob for most types, but not
 241          * for all.. arghh.
 242          */
 243         switch (hdr->propID)
 244         {
 245         case CERT_AUTO_ENROLL_PROP_ID:
 246         case CERT_CTL_USAGE_PROP_ID:
 247         case CERT_DESCRIPTION_PROP_ID:
 248         case CERT_FRIENDLY_NAME_PROP_ID:
 249         case CERT_HASH_PROP_ID:
 250         case CERT_KEY_IDENTIFIER_PROP_ID:
 251         case CERT_MD5_HASH_PROP_ID:
 252         case CERT_NEXT_UPDATE_LOCATION_PROP_ID:
 253         case CERT_PUBKEY_ALG_PARA_PROP_ID:
 254         case CERT_PVK_FILE_PROP_ID:
 255         case CERT_SIGNATURE_HASH_PROP_ID:
 256         case CERT_ISSUER_PUBLIC_KEY_MD5_HASH_PROP_ID:
 257         case CERT_SUBJECT_PUBLIC_KEY_MD5_HASH_PROP_ID:
 258         case CERT_ENROLLMENT_PROP_ID:
 259         case CERT_CROSS_CERT_DIST_POINTS_PROP_ID:
 260         case CERT_RENEWAL_PROP_ID:
 261         {
 262             CRYPT_DATA_BLOB blob = { hdr->cb,
 263              (LPBYTE)pbElement };
 264
 265             ret = contextInterface->setProp(context,
 266              hdr->propID, 0, &blob);
 267             break;
 268         }
 269         case CERT_DATE_STAMP_PROP_ID:
 270             ret = contextInterface->setProp(context,
 271              hdr->propID, 0, pbElement);
 272             break;
 273         case CERT_KEY_PROV_INFO_PROP_ID:
 274         {
 275             PCRYPT_KEY_PROV_INFO info =
 276              (PCRYPT_KEY_PROV_INFO)pbElement;
 277
 278             CRYPT_FixKeyProvInfoPointers(info);
 279             ret = contextInterface->setProp(context,
 280              hdr->propID, 0, pbElement);
 281             break;
 282         }
 283         default:
 284             ret = FALSE;
 285         }
 286     }
 287     else
 288     {
 289         /* ignore the context itself */
 290         ret = TRUE;
 291     }
 292     return ret;
 293 }
 294
 295 const void *CRYPT_ReadSerializedElement(const BYTE *pbElement, DWORD cbElement,
 296  DWORD dwContextTypeFlags, DWORD *pdwContentType)
 297 {
 298     const void *context;
 299
 300     TRACE("(%p, %d, %08x, %p)\n", pbElement, cbElement, dwContextTypeFlags,
 301      pdwContentType);
 302
 303     if (!cbElement)
 304     {
 305         SetLastError(ERROR_END_OF_MEDIA);
 306         return NULL;
 307     }
 308
 309     __TRY
 310     {
 311         const WINE_CONTEXT_INTERFACE *contextInterface = NULL;
 312         const WINE_CERT_PROP_HEADER *hdr = NULL;
 313         DWORD type = 0;
 314         BOOL ret;
 315
 316         ret = TRUE;
 317         context = NULL;
 318         if (dwContextTypeFlags == CERT_STORE_ALL_CONTEXT_FLAG)
 319         {
 320             hdr = CRYPT_findPropID(pbElement, cbElement, CERT_CERT_PROP_ID);
 321             if (hdr)
 322                 type = CERT_STORE_CERTIFICATE_CONTEXT;
 323             else
 324             {
 325                 hdr = CRYPT_findPropID(pbElement, cbElement, CERT_CRL_PROP_ID);
 326                 if (hdr)
 327                     type = CERT_STORE_CRL_CONTEXT;
 328                 else
 329                 {
 330                     hdr = CRYPT_findPropID(pbElement, cbElement,
 331                      CERT_CTL_PROP_ID);
 332                     if (hdr)
 333                         type = CERT_STORE_CTL_CONTEXT;
 334                 }
 335             }
 336         }
 337         else if (dwContextTypeFlags & CERT_STORE_CERTIFICATE_CONTEXT_FLAG)
 338         {
 339             hdr = CRYPT_findPropID(pbElement, cbElement, CERT_CERT_PROP_ID);
 340             type = CERT_STORE_CERTIFICATE_CONTEXT;
 341         }
 342         else if (dwContextTypeFlags & CERT_STORE_CRL_CONTEXT_FLAG)
 343         {
 344             hdr = CRYPT_findPropID(pbElement, cbElement, CERT_CRL_PROP_ID);
 345             type = CERT_STORE_CRL_CONTEXT;
 346         }
 347         else if (dwContextTypeFlags & CERT_STORE_CTL_CONTEXT_FLAG)
 348         {
 349             hdr = CRYPT_findPropID(pbElement, cbElement, CERT_CTL_PROP_ID);
 350             type = CERT_STORE_CTL_CONTEXT;
 351         }
 352
 353         switch (type)
 354         {
 355         case CERT_STORE_CERTIFICATE_CONTEXT:
 356             contextInterface = pCertInterface;
 357             break;
 358         case CERT_STORE_CRL_CONTEXT:
 359             contextInterface = pCRLInterface;
 360             break;
 361         case CERT_STORE_CTL_CONTEXT:
 362             contextInterface = pCTLInterface;
 363             break;
 364         default:
 365             SetLastError(E_INVALIDARG);
 366             ret = FALSE;
 367         }
 368         if (!hdr)
 369             ret = FALSE;
 370
 371         if (ret)
 372             context = contextInterface->create(X509_ASN_ENCODING,
 373              (BYTE *)hdr + sizeof(WINE_CERT_PROP_HEADER), hdr->cb);
 374         if (ret && context)
 375         {
 376             BOOL noMoreProps = FALSE;
 377
 378             while (!noMoreProps && ret)
 379             {
 380                 if (cbElement < sizeof(WINE_CERT_PROP_HEADER))
 381                     ret = FALSE;
 382                 else
 383                 {
 384                     const WINE_CERT_PROP_HEADER *hdr =
 385                      (const WINE_CERT_PROP_HEADER *)pbElement;
 386
 387                     TRACE("prop is %d\n", hdr->propID);
 388                     cbElement -= sizeof(WINE_CERT_PROP_HEADER);
 389                     pbElement += sizeof(WINE_CERT_PROP_HEADER);
 390                     if (!hdr->propID)
 391                     {
 392                         /* Like in CRYPT_findPropID, stop if the propID is zero
 393                          */
 394                         noMoreProps = TRUE;
 395                     }
 396                     else
 397                         ret = CRYPT_ReadContextProp(contextInterface, context,
 398                          hdr, pbElement, cbElement);
 399                     pbElement += hdr->cb;
 400                     cbElement -= hdr->cb;
 401                     if (!cbElement)
 402                         noMoreProps = TRUE;
 403                 }
 404             }
 405             if (ret)
 406             {
 407                 if (pdwContentType)
 408                     *pdwContentType = type;
 409             }
 410             else
 411             {
 412                 contextInterface->free(context);
 413                 context = NULL;
 414             }
 415         }
 416     }
 417     __EXCEPT_PAGE_FAULT
 418     {
 419         SetLastError(STATUS_ACCESS_VIOLATION);
 420         context = NULL;
 421     }
 422     __ENDTRY
 423     return context;
 424 }
 425
 426 static const BYTE fileHeader[] = { 0, 0, 0, 0, 'C','E','R','T' };
 427
 428 typedef BOOL (*read_serialized_func)(void *handle, void *buffer,
 429  DWORD bytesToRead, DWORD *bytesRead);
 430
 431 static BOOL CRYPT_ReadSerializedStore(void *handle,
 432  read_serialized_func read_func, HCERTSTORE store)
 433 {
 434     BYTE fileHeaderBuf[sizeof(fileHeader)];
 435     DWORD read;
 436     BOOL ret;
 437
 438     /* Failure reading is non-critical, we'll leave the store empty */
 439     ret = read_func(handle, fileHeaderBuf, sizeof(fileHeaderBuf), &read);
 440     if (ret)
 441     {
 442         if (!read)
 443             ; /* an empty file is okay */
 444         else if (read != sizeof(fileHeaderBuf))
 445             ret = FALSE;
 446         else if (!memcmp(fileHeaderBuf, fileHeader, read))
 447         {
 448             WINE_CERT_PROP_HEADER propHdr;
 449             const void *context = NULL;
 450             const WINE_CONTEXT_INTERFACE *contextInterface = NULL;
 451             LPBYTE buf = NULL;
 452             DWORD bufSize = 0;
 453
 454             do {
 455                 ret = read_func(handle, &propHdr, sizeof(propHdr), &read);
 456                 if (ret && read == sizeof(propHdr))
 457                 {
 458                     if (contextInterface && context &&
 459                      (propHdr.propID == CERT_CERT_PROP_ID ||
 460                      propHdr.propID == CERT_CRL_PROP_ID ||
 461                      propHdr.propID == CERT_CTL_PROP_ID))
 462                     {
 463                         /* We have a new context, so free the existing one */
 464                         contextInterface->free(context);
 465                     }
 466                     if (propHdr.cb > bufSize)
 467                     {
 468                         /* Not reusing realloc, because the old data aren't
 469                          * needed any longer.
 470                          */
 471                         CryptMemFree(buf);
 472                         buf = CryptMemAlloc(propHdr.cb);
 473                         bufSize = propHdr.cb;
 474                     }
 475                     if (buf)
 476                     {
 477                         ret = read_func(handle, buf, propHdr.cb, &read);
 478                         if (ret && read == propHdr.cb)
 479                         {
 480                             if (propHdr.propID == CERT_CERT_PROP_ID)
 481                             {
 482                                 contextInterface = pCertInterface;
 483                                 ret = contextInterface->addEncodedToStore(store,
 484                                  X509_ASN_ENCODING, buf, read,
 485                                  CERT_STORE_ADD_NEW, &context);
 486                             }
 487                             else if (propHdr.propID == CERT_CRL_PROP_ID)
 488                             {
 489                                 contextInterface = pCRLInterface;
 490                                 ret = contextInterface->addEncodedToStore(store,
 491                                  X509_ASN_ENCODING, buf, read,
 492                                  CERT_STORE_ADD_NEW, &context);
 493                             }
 494                             else if (propHdr.propID == CERT_CTL_PROP_ID)
 495                             {
 496                                 contextInterface = pCTLInterface;
 497                                 ret = contextInterface->addEncodedToStore(store,
 498                                  X509_ASN_ENCODING, buf, read,
 499                                  CERT_STORE_ADD_NEW, &context);
 500                             }
 501                             else
 502                             {
 503                                 if (!contextInterface)
 504                                 {
 505                                     WARN("prop id %d before a context id\n",
 506                                      propHdr.propID);
 507                                     ret = FALSE;
 508                                 }
 509                                 else
 510                                     ret = CRYPT_ReadContextProp(
 511                                      contextInterface, context, &propHdr, buf,
 512                                      read);
 513                             }
 514                         }
 515                     }
 516                     else
 517                         ret = FALSE;
 518                 }
 519             } while (ret && read > 0);
 520             if (contextInterface && context)
 521             {
 522                 /* Free the last context added */
 523                 contextInterface->free(context);
 524             }
 525             CryptMemFree(buf);
 526             ret = TRUE;
 527         }
 528         else
 529             ret = FALSE;
 530     }
 531     else
 532         ret = TRUE;
 533     return ret;
 534 }
 535
 536 static BOOL read_file_wrapper(void *handle, void *buffer, DWORD bytesToRead,
 537  DWORD *bytesRead)
 538 {
 539     return ReadFile(handle, buffer, bytesToRead, bytesRead, NULL);
 540 }
 541
 542 BOOL CRYPT_ReadSerializedStoreFromFile(HANDLE file, HCERTSTORE store)
 543 {
 544     return CRYPT_ReadSerializedStore(file, read_file_wrapper, store);
 545 }
 546
 547 struct BlobReader
 548 {
 549     const CRYPT_DATA_BLOB *blob;
 550     DWORD current;
 551 };
 552
 553 static BOOL read_blob_wrapper(void *handle, void *buffer, DWORD bytesToRead,
 554  DWORD *bytesRead)
 555 {
 556     struct BlobReader *reader = handle;
 557     BOOL ret;
 558
 559     if (reader->current < reader->blob->cbData)
 560     {
 561         *bytesRead = min(bytesToRead, reader->blob->cbData - reader->current);
 562         memcpy(buffer, reader->blob->pbData + reader->current, *bytesRead);
 563         ret = TRUE;
 564     }
 565     else
 566         ret = FALSE;
 567     return ret;
 568 }
 569
 570 BOOL CRYPT_ReadSerializedStoreFromBlob(const CRYPT_DATA_BLOB *blob,
 571  HCERTSTORE store)
 572 {
 573     struct BlobReader reader = { blob, 0 };
 574
 575     return CRYPT_ReadSerializedStore(&reader, read_blob_wrapper, store);
 576 }
 577
 578 static BOOL WINAPI CRYPT_SerializeCertNoHash(PCCERT_CONTEXT pCertContext,
 579  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 580 {
 581     return CRYPT_SerializeStoreElement(pCertContext,
 582      pCertContext->pbCertEncoded, pCertContext->cbCertEncoded,
 583      CERT_CERT_PROP_ID, pCertInterface, dwFlags, TRUE, pbElement, pcbElement);
 584 }
 585
 586 static BOOL WINAPI CRYPT_SerializeCRLNoHash(PCCRL_CONTEXT pCrlContext,
 587  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 588 {
 589     return CRYPT_SerializeStoreElement(pCrlContext,
 590      pCrlContext->pbCrlEncoded, pCrlContext->cbCrlEncoded,
 591      CERT_CRL_PROP_ID, pCRLInterface, dwFlags, TRUE, pbElement, pcbElement);
 592 }
 593
 594 static BOOL WINAPI CRYPT_SerializeCTLNoHash(PCCTL_CONTEXT pCtlContext,
 595  DWORD dwFlags, BYTE *pbElement, DWORD *pcbElement)
 596 {
 597     return CRYPT_SerializeStoreElement(pCtlContext,
 598      pCtlContext->pbCtlEncoded, pCtlContext->cbCtlEncoded,
 599      CERT_CTL_PROP_ID, pCTLInterface, dwFlags, TRUE, pbElement, pcbElement);
 600 }
 601
 602 typedef BOOL (*SerializedOutputFunc)(void *handle, const void *buffer,
 603  DWORD size);
 604
 605 static BOOL CRYPT_SerializeContextsToStream(SerializedOutputFunc output,
 606  void *handle, const WINE_CONTEXT_INTERFACE *contextInterface, HCERTSTORE store)
 607 {
 608     const void *context = NULL;
 609     BOOL ret;
 610
 611     do {
 612         context = contextInterface->enumContextsInStore(store, context);
 613         if (context)
 614         {
 615             DWORD size = 0;
 616             LPBYTE buf = NULL;
 617
 618             ret = contextInterface->serialize(context, 0, NULL, &size);
 619             if (size)
 620                 buf = CryptMemAlloc(size);
 621             if (buf)
 622             {
 623                 ret = contextInterface->serialize(context, 0, buf, &size);
 624                 if (ret)
 625                     ret = output(handle, buf, size);
 626             }
 627             CryptMemFree(buf);
 628         }
 629         else
 630             ret = TRUE;
 631     } while (ret && context != NULL);
 632     if (context)
 633         contextInterface->free(context);
 634     return ret;
 635 }
 636
 637 static BOOL CRYPT_WriteSerializedStoreToStream(HCERTSTORE store,
 638  SerializedOutputFunc output, void *handle)
 639 {
 640     static const BYTE fileTrailer[12] = { 0 };
 641     WINE_CONTEXT_INTERFACE interface;
 642     BOOL ret;
 643
 644     ret = output(handle, fileHeader, sizeof(fileHeader));
 645     if (ret)
 646     {
 647         memcpy(&interface, pCertInterface, sizeof(interface));
 648         interface.serialize = (SerializeElementFunc)CRYPT_SerializeCertNoHash;
 649         ret = CRYPT_SerializeContextsToStream(output, handle, &interface,
 650          store);
 651     }
 652     if (ret)
 653     {
 654         memcpy(&interface, pCRLInterface, sizeof(interface));
 655         interface.serialize = (SerializeElementFunc)CRYPT_SerializeCRLNoHash;
 656         ret = CRYPT_SerializeContextsToStream(output, handle, &interface,
 657          store);
 658     }
 659     if (ret)
 660     {
 661         memcpy(&interface, pCTLInterface, sizeof(interface));
 662         interface.serialize = (SerializeElementFunc)CRYPT_SerializeCTLNoHash;
 663         ret = CRYPT_SerializeContextsToStream(output, handle, &interface,
 664          store);
 665     }
 666     if (ret)
 667         ret = output(handle, fileTrailer, sizeof(fileTrailer));
 668     return ret;
 669 }
 670
 671 static BOOL CRYPT_FileOutputFunc(void *handle, const void *buffer, DWORD size)
 672 {
 673     return WriteFile(handle, buffer, size, &size, NULL);
 674 }
 675
 676 static BOOL CRYPT_WriteSerializedStoreToFile(HANDLE file, HCERTSTORE store)
 677 {
 678     SetFilePointer(file, 0, NULL, FILE_BEGIN);
 679     return CRYPT_WriteSerializedStoreToStream(store, CRYPT_FileOutputFunc,
 680      file);
 681 }
 682
 683 static BOOL CRYPT_SavePKCSToMem(HCERTSTORE store,
 684  DWORD dwMsgAndCertEncodingType, void *handle)
 685 {
 686     CERT_BLOB *blob = handle;
 687     CRYPT_SIGNED_INFO signedInfo = { 0 };
 688     PCCERT_CONTEXT cert = NULL;
 689     PCCRL_CONTEXT crl = NULL;
 690     DWORD size;
 691     BOOL ret = TRUE;
 692
 693     TRACE("(%d, %p)\n", blob->pbData ? blob->cbData : 0, blob->pbData);
 694
 695     do {
 696         cert = CertEnumCertificatesInStore(store, cert);
 697         if (cert)
 698             signedInfo.cCertEncoded++;
 699     } while (cert);
 700     if (signedInfo.cCertEncoded)
 701     {
 702         signedInfo.rgCertEncoded = CryptMemAlloc(
 703          signedInfo.cCertEncoded * sizeof(CERT_BLOB));
 704         if (!signedInfo.rgCertEncoded)
 705         {
 706             SetLastError(ERROR_OUTOFMEMORY);
 707             ret = FALSE;
 708         }
 709         else
 710         {
 711             DWORD i = 0;
 712
 713             do {
 714                 cert = CertEnumCertificatesInStore(store, cert);
 715                 if (cert)
 716                 {
 717                     signedInfo.rgCertEncoded[i].cbData = cert->cbCertEncoded;
 718                     signedInfo.rgCertEncoded[i].pbData = cert->pbCertEncoded;
 719                     i++;
 720                 }
 721             } while (cert);
 722         }
 723     }
 724
 725     do {
 726         crl = CertEnumCRLsInStore(store, crl);
 727         if (crl)
 728             signedInfo.cCrlEncoded++;
 729     } while (crl);
 730     if (signedInfo.cCrlEncoded)
 731     {
 732         signedInfo.rgCrlEncoded = CryptMemAlloc(
 733          signedInfo.cCrlEncoded * sizeof(CERT_BLOB));
 734         if (!signedInfo.rgCrlEncoded)
 735         {
 736             SetLastError(ERROR_OUTOFMEMORY);
 737             ret = FALSE;
 738         }
 739         else
 740         {
 741             DWORD i = 0;
 742
 743             do {
 744                 crl = CertEnumCRLsInStore(store, crl);
 745                 if (crl)
 746                 {
 747                     signedInfo.rgCrlEncoded[i].cbData = crl->cbCrlEncoded;
 748                     signedInfo.rgCrlEncoded[i].pbData = crl->pbCrlEncoded;
 749                     i++;
 750                 }
 751             } while (crl);
 752         }
 753     }
 754     if (ret)
 755     {
 756         ret = CRYPT_AsnEncodeCMSSignedInfo(&signedInfo, NULL, &size);
 757         if (ret)
 758         {
 759             if (!blob->pbData)
 760                 blob->cbData = size;
 761             else if (blob->cbData < size)
 762             {
 763                 blob->cbData = size;
 764                 SetLastError(ERROR_MORE_DATA);
 765                 ret = FALSE;
 766             }
 767             else
 768             {
 769                 blob->cbData = size;
 770                 ret = CRYPT_AsnEncodeCMSSignedInfo(&signedInfo, blob->pbData,
 771                  &blob->cbData);
 772             }
 773         }
 774     }
 775     CryptMemFree(signedInfo.rgCertEncoded);
 776     CryptMemFree(signedInfo.rgCrlEncoded);
 777     TRACE("returning %d\n", ret);
 778     return ret;
 779 }
 780
 781 static BOOL CRYPT_SavePKCSToFile(HCERTSTORE store,
 782  DWORD dwMsgAndCertEncodingType, void *handle)
 783 {
 784     CERT_BLOB blob = { 0, NULL };
 785     BOOL ret;
 786
 787     TRACE("(%p)\n", handle);
 788
 789     ret = CRYPT_SavePKCSToMem(store, dwMsgAndCertEncodingType, &blob);
 790     if (ret)
 791     {
 792         blob.pbData = CryptMemAlloc(blob.cbData);
 793         if (blob.pbData)
 794         {
 795             ret = CRYPT_SavePKCSToMem(store, dwMsgAndCertEncodingType, &blob);
 796             if (ret)
 797                 ret = WriteFile(handle, blob.pbData, blob.cbData,
 798                  &blob.cbData, NULL);
 799         }
 800         else
 801         {
 802             SetLastError(ERROR_OUTOFMEMORY);
 803             ret = FALSE;
 804         }
 805     }
 806     TRACE("returning %d\n", ret);
 807     return ret;
 808 }
 809
 810 static BOOL CRYPT_SaveSerializedToFile(HCERTSTORE store,
 811  DWORD dwMsgAndCertEncodingType, void *handle)
 812 {
 813     return CRYPT_WriteSerializedStoreToFile(handle, store);
 814 }
 815
 816 struct MemWrittenTracker
 817 {
 818     DWORD cbData;
 819     BYTE *pbData;
 820     DWORD written;
 821 };
 822
 823 /* handle is a pointer to a MemWrittenTracker.  Assumes its pointer is valid. */
 824 static BOOL CRYPT_MemOutputFunc(void *handle, const void *buffer, DWORD size)
 825 {
 826     struct MemWrittenTracker *tracker = handle;
 827     BOOL ret;
 828
 829     if (tracker->written + size > tracker->cbData)
 830     {
 831         SetLastError(ERROR_MORE_DATA);
 832         /* Update written so caller can notify its caller of the required size
 833          */
 834         tracker->written += size;
 835         ret = FALSE;
 836     }
 837     else
 838     {
 839         memcpy(tracker->pbData + tracker->written, buffer, size);
 840         tracker->written += size;
 841         ret = TRUE;
 842     }
 843     return ret;
 844 }
 845
 846 static BOOL CRYPT_CountSerializedBytes(void *handle, const void *buffer,
 847  DWORD size)
 848 {
 849     *(DWORD *)handle += size;
 850     return TRUE;
 851 }
 852
 853 static BOOL CRYPT_SaveSerializedToMem(HCERTSTORE store,
 854  DWORD dwMsgAndCertEncodingType, void *handle)
 855 {
 856     CERT_BLOB *blob = handle;
 857     DWORD size = 0;
 858     BOOL ret;
 859
 860     ret = CRYPT_WriteSerializedStoreToStream(store, CRYPT_CountSerializedBytes,
 861      &size);
 862     if (ret)
 863     {
 864         if (!blob->pbData)
 865             blob->cbData = size;
 866         else if (blob->cbData < size)
 867         {
 868             SetLastError(ERROR_MORE_DATA);
 869             blob->cbData = size;
 870             ret = FALSE;
 871         }
 872         else
 873         {
 874             struct MemWrittenTracker tracker = { blob->cbData, blob->pbData,
 875              0 };
 876
 877             ret = CRYPT_WriteSerializedStoreToStream(store, CRYPT_MemOutputFunc,
 878              &tracker);
 879             if (!ret && GetLastError() == ERROR_MORE_DATA)
 880                 blob->cbData = tracker.written;
 881         }
 882     }
 883     TRACE("returning %d\n", ret);
 884     return ret;
 885 }
 886
 887 BOOL WINAPI CertSaveStore(HCERTSTORE hCertStore, DWORD dwMsgAndCertEncodingType,
 888  DWORD dwSaveAs, DWORD dwSaveTo, void *pvSaveToPara, DWORD dwFlags)
 889 {
 890     BOOL (*saveFunc)(HCERTSTORE, DWORD, void *);
 891     void *handle;
 892     BOOL ret, closeFile = TRUE;
 893
 894     TRACE("(%p, %08x, %d, %d, %p, %08x)\n", hCertStore,
 895           dwMsgAndCertEncodingType, dwSaveAs, dwSaveTo, pvSaveToPara, dwFlags);
 896
 897     switch (dwSaveAs)
 898     {
 899     case CERT_STORE_SAVE_AS_STORE:
 900         if (dwSaveTo == CERT_STORE_SAVE_TO_MEMORY)
 901             saveFunc = CRYPT_SaveSerializedToMem;
 902         else
 903             saveFunc = CRYPT_SaveSerializedToFile;
 904         break;
 905     case CERT_STORE_SAVE_AS_PKCS7:
 906         if (dwSaveTo == CERT_STORE_SAVE_TO_MEMORY)
 907             saveFunc = CRYPT_SavePKCSToMem;
 908         else
 909             saveFunc = CRYPT_SavePKCSToFile;
 910         break;
 911     default:
 912         WARN("unimplemented for %d\n", dwSaveAs);
 913         SetLastError(ERROR_INVALID_PARAMETER);
 914         return FALSE;
 915     }
 916     switch (dwSaveTo)
 917     {
 918     case CERT_STORE_SAVE_TO_FILE:
 919         handle = pvSaveToPara;
 920         closeFile = FALSE;
 921         break;
 922     case CERT_STORE_SAVE_TO_FILENAME_A:
 923         handle = CreateFileA(pvSaveToPara, GENERIC_WRITE, 0, NULL,
 924          CREATE_ALWAYS, 0, NULL);
 925         break;
 926     case CERT_STORE_SAVE_TO_FILENAME_W:
 927         handle = CreateFileW(pvSaveToPara, GENERIC_WRITE, 0, NULL,
 928          CREATE_ALWAYS, 0, NULL);
 929         break;
 930     case CERT_STORE_SAVE_TO_MEMORY:
 931         handle = pvSaveToPara;
 932         break;
 933     default:
 934         WARN("unimplemented for %d\n", dwSaveTo);
 935         SetLastError(ERROR_INVALID_PARAMETER);
 936         return FALSE;
 937     }
 938     ret = saveFunc(hCertStore, dwMsgAndCertEncodingType, handle);
 939     if (closeFile)
 940         CloseHandle(handle);
 941     TRACE("returning %d\n", ret);
 942     return ret;
 943 }
 944
 945 BOOL WINAPI CertAddSerializedElementToStore(HCERTSTORE hCertStore,
 946  const BYTE *pbElement, DWORD cbElement, DWORD dwAddDisposition, DWORD dwFlags,
 947  DWORD dwContextTypeFlags, DWORD *pdwContentType, const void **ppvContext)
 948 {
 949     const void *context;
 950     DWORD type;
 951     BOOL ret;
 952
 953     TRACE("(%p, %p, %d, %08x, %08x, %08x, %p, %p)\n", hCertStore,
 954      pbElement, cbElement, dwAddDisposition, dwFlags, dwContextTypeFlags,
 955      pdwContentType, ppvContext);
 956
 957     /* Call the internal function, then delete the hashes.  Tests show this
 958      * function uses real hash values, not whatever's stored in the hash
 959      * property.
 960      */
 961     context = CRYPT_ReadSerializedElement(pbElement, cbElement,
 962      dwContextTypeFlags, &type);
 963     if (context)
 964     {
 965         const WINE_CONTEXT_INTERFACE *contextInterface = NULL;
 966
 967         switch (type)
 968         {
 969         case CERT_STORE_CERTIFICATE_CONTEXT:
 970             contextInterface = pCertInterface;
 971             break;
 972         case CERT_STORE_CRL_CONTEXT:
 973             contextInterface = pCRLInterface;
 974             break;
 975         case CERT_STORE_CTL_CONTEXT:
 976             contextInterface = pCTLInterface;
 977             break;
 978         default:
 979             SetLastError(E_INVALIDARG);
 980         }
 981         if (contextInterface)
 982         {
 983             contextInterface->setProp(context, CERT_HASH_PROP_ID, 0, NULL);
 984             contextInterface->setProp(context, CERT_MD5_HASH_PROP_ID, 0, NULL);
 985             contextInterface->setProp(context, CERT_SIGNATURE_HASH_PROP_ID, 0,
 986              NULL);
 987             if (pdwContentType)
 988                 *pdwContentType = type;
 989             ret = contextInterface->addContextToStore(hCertStore, context,
 990              dwAddDisposition, ppvContext);
 991             contextInterface->free(context);
 992         }
 993         else
 994             ret = FALSE;
 995     }
 996     else
 997         ret = FALSE;
 998     return ret;
 999 }