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

   1 /*
   2  * Copyright 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 #define NONAMELESSUNION
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "wincrypt.h"
  27 #include "snmp.h"
  28
  29 #include "wine/debug.h"
  30 #include "wine/exception.h"
  31 #include "crypt32_private.h"
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  34
  35 /* Called when a message's ref count reaches zero.  Free any message-specific
  36  * data here.
  37  */
  38 typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
  39
  40 typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
  41  DWORD dwIndex, void *pvData, DWORD *pcbData);
  42
  43 typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
  44  DWORD cbData, BOOL fFinal);
  45
  46 typedef BOOL (*CryptMsgControlFunc)(HCRYPTMSG hCryptMsg, DWORD dwFlags,
  47  DWORD dwCtrlType, const void *pvCtrlPara);
  48
  49 static BOOL CRYPT_DefaultMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
  50  DWORD dwCtrlType, const void *pvCtrlPara)
  51 {
  52     TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
  53     SetLastError(E_INVALIDARG);
  54     return FALSE;
  55 }
  56
  57 typedef enum _CryptMsgState {
  58     MsgStateInit,
  59     MsgStateUpdated,
  60     MsgStateDataFinalized,
  61     MsgStateFinalized
  62 } CryptMsgState;
  63
  64 typedef struct _CryptMsgBase
  65 {
  66     LONG                 ref;
  67     DWORD                open_flags;
  68     BOOL                 streamed;
  69     CMSG_STREAM_INFO     stream_info;
  70     CryptMsgState        state;
  71     CryptMsgCloseFunc    close;
  72     CryptMsgUpdateFunc   update;
  73     CryptMsgGetParamFunc get_param;
  74     CryptMsgControlFunc  control;
  75 } CryptMsgBase;
  76
  77 static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
  78  PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
  79  CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update,
  80  CryptMsgControlFunc control)
  81 {
  82     msg->ref = 1;
  83     msg->open_flags = dwFlags;
  84     if (pStreamInfo)
  85     {
  86         msg->streamed = TRUE;
  87         msg->stream_info = *pStreamInfo;
  88     }
  89     else
  90     {
  91         msg->streamed = FALSE;
  92         memset(&msg->stream_info, 0, sizeof(msg->stream_info));
  93     }
  94     msg->close = close;
  95     msg->get_param = get_param;
  96     msg->update = update;
  97     msg->control = control;
  98     msg->state = MsgStateInit;
  99 }
 100
 101 typedef struct _CDataEncodeMsg
 102 {
 103     CryptMsgBase base;
 104     DWORD        bare_content_len;
 105     LPBYTE       bare_content;
 106 } CDataEncodeMsg;
 107
 108 static const BYTE empty_data_content[] = { 0x04,0x00 };
 109
 110 static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
 111 {
 112     CDataEncodeMsg *msg = hCryptMsg;
 113
 114     if (msg->bare_content != empty_data_content)
 115         LocalFree(msg->bare_content);
 116 }
 117
 118 static BOOL WINAPI CRYPT_EncodeContentLength(DWORD dwCertEncodingType,
 119  LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
 120  PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
 121 {
 122     DWORD dataLen = *(DWORD *)pvStructInfo;
 123     DWORD lenBytes;
 124     BOOL ret = TRUE;
 125
 126     /* Trick:  report bytes needed based on total message length, even though
 127      * the message isn't available yet.  The caller will use the length
 128      * reported here to encode its length.
 129      */
 130     CRYPT_EncodeLen(dataLen, NULL, &lenBytes);
 131     if (!pbEncoded)
 132         *pcbEncoded = 1 + lenBytes + dataLen;
 133     else
 134     {
 135         if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
 136          pcbEncoded, 1 + lenBytes)))
 137         {
 138             if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
 139                 pbEncoded = *(BYTE **)pbEncoded;
 140             *pbEncoded++ = ASN_OCTETSTRING;
 141             CRYPT_EncodeLen(dataLen, pbEncoded,
 142              &lenBytes);
 143         }
 144     }
 145     return ret;
 146 }
 147
 148 static BOOL CRYPT_EncodeDataContentInfoHeader(const CDataEncodeMsg *msg,
 149  CRYPT_DATA_BLOB *header)
 150 {
 151     BOOL ret;
 152
 153     if (msg->base.streamed && msg->base.stream_info.cbContent == 0xffffffff)
 154     {
 155         static const BYTE headerValue[] = { 0x30,0x80,0x06,0x09,0x2a,0x86,0x48,
 156          0x86,0xf7,0x0d,0x01,0x07,0x01,0xa0,0x80,0x24,0x80 };
 157
 158         header->pbData = LocalAlloc(0, sizeof(headerValue));
 159         if (header->pbData)
 160         {
 161             header->cbData = sizeof(headerValue);
 162             memcpy(header->pbData, headerValue, sizeof(headerValue));
 163             ret = TRUE;
 164         }
 165         else
 166             ret = FALSE;
 167     }
 168     else
 169     {
 170         struct AsnConstructedItem constructed = { 0,
 171          &msg->base.stream_info.cbContent, CRYPT_EncodeContentLength };
 172         struct AsnEncodeSequenceItem items[2] = {
 173          { szOID_RSA_data, CRYPT_AsnEncodeOid, 0 },
 174          { &constructed,   CRYPT_AsnEncodeConstructed, 0 },
 175         };
 176
 177         ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items,
 178          sizeof(items) / sizeof(items[0]), CRYPT_ENCODE_ALLOC_FLAG, NULL,
 179          (LPBYTE)&header->pbData, &header->cbData);
 180         if (ret)
 181         {
 182             /* Trick:  subtract the content length from the reported length,
 183              * as the actual content hasn't come yet.
 184              */
 185             header->cbData -= msg->base.stream_info.cbContent;
 186         }
 187     }
 188     return ret;
 189 }
 190
 191 static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
 192  DWORD cbData, BOOL fFinal)
 193 {
 194     CDataEncodeMsg *msg = hCryptMsg;
 195     BOOL ret = FALSE;
 196
 197     if (msg->base.state == MsgStateFinalized)
 198         SetLastError(CRYPT_E_MSG_ERROR);
 199     else if (msg->base.streamed)
 200     {
 201         __TRY
 202         {
 203             if (msg->base.state != MsgStateUpdated)
 204             {
 205                 CRYPT_DATA_BLOB header;
 206
 207                 ret = CRYPT_EncodeDataContentInfoHeader(msg, &header);
 208                 if (ret)
 209                 {
 210                     ret = msg->base.stream_info.pfnStreamOutput(
 211                      msg->base.stream_info.pvArg, header.pbData, header.cbData,
 212                      FALSE);
 213                     LocalFree(header.pbData);
 214                 }
 215             }
 216             /* Curiously, every indefinite-length streamed update appears to
 217              * get its own tag and length, regardless of fFinal.
 218              */
 219             if (msg->base.stream_info.cbContent == 0xffffffff)
 220             {
 221                 BYTE *header;
 222                 DWORD headerLen;
 223
 224                 ret = CRYPT_EncodeContentLength(X509_ASN_ENCODING, NULL,
 225                  &cbData, CRYPT_ENCODE_ALLOC_FLAG, NULL, (BYTE *)&header,
 226                  &headerLen);
 227                 if (ret)
 228                 {
 229                     ret = msg->base.stream_info.pfnStreamOutput(
 230                      msg->base.stream_info.pvArg, header, headerLen,
 231                      FALSE);
 232                     LocalFree(header);
 233                 }
 234             }
 235             if (!fFinal)
 236             {
 237                 ret = msg->base.stream_info.pfnStreamOutput(
 238                  msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
 239                  FALSE);
 240                 msg->base.state = MsgStateUpdated;
 241             }
 242             else
 243             {
 244                 msg->base.state = MsgStateFinalized;
 245                 if (msg->base.stream_info.cbContent == 0xffffffff)
 246                 {
 247                     BYTE indefinite_trailer[6] = { 0 };
 248
 249                     ret = msg->base.stream_info.pfnStreamOutput(
 250                      msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
 251                      FALSE);
 252                     if (ret)
 253                         ret = msg->base.stream_info.pfnStreamOutput(
 254                          msg->base.stream_info.pvArg, indefinite_trailer,
 255                          sizeof(indefinite_trailer), TRUE);
 256                 }
 257                 else
 258                     ret = msg->base.stream_info.pfnStreamOutput(
 259                      msg->base.stream_info.pvArg, (BYTE *)pbData, cbData, TRUE);
 260             }
 261         }
 262         __EXCEPT_PAGE_FAULT
 263         {
 264             SetLastError(STATUS_ACCESS_VIOLATION);
 265             ret = FALSE;
 266         }
 267         __ENDTRY;
 268     }
 269     else
 270     {
 271         if (!fFinal)
 272         {
 273             if (msg->base.open_flags & CMSG_DETACHED_FLAG)
 274                 SetLastError(E_INVALIDARG);
 275             else
 276                 SetLastError(CRYPT_E_MSG_ERROR);
 277         }
 278         else
 279         {
 280             msg->base.state = MsgStateFinalized;
 281             if (!cbData)
 282                 SetLastError(E_INVALIDARG);
 283             else
 284             {
 285                 CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
 286
 287                 /* non-streamed data messages don't allow non-final updates,
 288                  * don't bother checking whether data already exist, they can't.
 289                  */
 290                 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
 291                  &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
 292                  &msg->bare_content_len);
 293             }
 294         }
 295     }
 296     return ret;
 297 }
 298
 299 static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const void *src,
 300  DWORD len)
 301 {
 302     BOOL ret = TRUE;
 303
 304     if (!pvData)
 305         *pcbData = len;
 306     else if (*pcbData < len)
 307     {
 308         *pcbData = len;
 309         SetLastError(ERROR_MORE_DATA);
 310         ret = FALSE;
 311     }
 312     else
 313     {
 314         *pcbData = len;
 315         memcpy(pvData, src, len);
 316     }
 317     return ret;
 318 }
 319
 320 static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
 321  DWORD dwIndex, void *pvData, DWORD *pcbData)
 322 {
 323     CDataEncodeMsg *msg = hCryptMsg;
 324     BOOL ret = FALSE;
 325
 326     switch (dwParamType)
 327     {
 328     case CMSG_CONTENT_PARAM:
 329         if (msg->base.streamed)
 330             SetLastError(E_INVALIDARG);
 331         else
 332         {
 333             CRYPT_CONTENT_INFO info;
 334             char rsa_data[] = "1.2.840.113549.1.7.1";
 335
 336             info.pszObjId = rsa_data;
 337             info.Content.cbData = msg->bare_content_len;
 338             info.Content.pbData = msg->bare_content;
 339             ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
 340              pvData, pcbData);
 341         }
 342         break;
 343     case CMSG_BARE_CONTENT_PARAM:
 344         if (msg->base.streamed)
 345             SetLastError(E_INVALIDARG);
 346         else
 347             ret = CRYPT_CopyParam(pvData, pcbData, msg->bare_content,
 348              msg->bare_content_len);
 349         break;
 350     default:
 351         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
 352     }
 353     return ret;
 354 }
 355
 356 static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
 357  LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
 358 {
 359     CDataEncodeMsg *msg;
 360
 361     if (pvMsgEncodeInfo)
 362     {
 363         SetLastError(E_INVALIDARG);
 364         return NULL;
 365     }
 366     msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
 367     if (msg)
 368     {
 369         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
 370          CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update,
 371          CRYPT_DefaultMsgControl);
 372         msg->bare_content_len = sizeof(empty_data_content);
 373         msg->bare_content = (LPBYTE)empty_data_content;
 374     }
 375     return msg;
 376 }
 377
 378 typedef struct _CHashEncodeMsg
 379 {
 380     CryptMsgBase    base;
 381     HCRYPTPROV      prov;
 382     HCRYPTHASH      hash;
 383     CRYPT_DATA_BLOB data;
 384 } CHashEncodeMsg;
 385
 386 static void CHashEncodeMsg_Close(HCRYPTMSG hCryptMsg)
 387 {
 388     CHashEncodeMsg *msg = hCryptMsg;
 389
 390     CryptMemFree(msg->data.pbData);
 391     CryptDestroyHash(msg->hash);
 392     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
 393         CryptReleaseContext(msg->prov, 0);
 394 }
 395
 396 static BOOL CRYPT_EncodePKCSDigestedData(CHashEncodeMsg *msg, void *pvData,
 397  DWORD *pcbData)
 398 {
 399     BOOL ret;
 400     ALG_ID algID;
 401     DWORD size = sizeof(algID);
 402
 403     ret = CryptGetHashParam(msg->hash, HP_ALGID, (BYTE *)&algID, &size, 0);
 404     if (ret)
 405     {
 406         CRYPT_DIGESTED_DATA digestedData = { 0 };
 407         char oid_rsa_data[] = szOID_RSA_data;
 408
 409         digestedData.version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
 410         digestedData.DigestAlgorithm.pszObjId = (LPSTR)CertAlgIdToOID(algID);
 411         /* FIXME: what about digestedData.DigestAlgorithm.Parameters? */
 412         /* Quirk:  OID is only encoded messages if an update has happened */
 413         if (msg->base.state != MsgStateInit)
 414             digestedData.ContentInfo.pszObjId = oid_rsa_data;
 415         if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->data.cbData)
 416         {
 417             ret = CRYPT_AsnEncodeOctets(0, NULL, &msg->data,
 418              CRYPT_ENCODE_ALLOC_FLAG, NULL,
 419              (LPBYTE)&digestedData.ContentInfo.Content.pbData,
 420              &digestedData.ContentInfo.Content.cbData);
 421         }
 422         if (msg->base.state == MsgStateFinalized)
 423         {
 424             size = sizeof(DWORD);
 425             ret = CryptGetHashParam(msg->hash, HP_HASHSIZE,
 426              (LPBYTE)&digestedData.hash.cbData, &size, 0);
 427             if (ret)
 428             {
 429                 digestedData.hash.pbData = CryptMemAlloc(
 430                  digestedData.hash.cbData);
 431                 ret = CryptGetHashParam(msg->hash, HP_HASHVAL,
 432                  digestedData.hash.pbData, &digestedData.hash.cbData, 0);
 433             }
 434         }
 435         if (ret)
 436             ret = CRYPT_AsnEncodePKCSDigestedData(&digestedData, pvData,
 437              pcbData);
 438         CryptMemFree(digestedData.hash.pbData);
 439         LocalFree(digestedData.ContentInfo.Content.pbData);
 440     }
 441     return ret;
 442 }
 443
 444 static BOOL CHashEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
 445  DWORD dwIndex, void *pvData, DWORD *pcbData)
 446 {
 447     CHashEncodeMsg *msg = hCryptMsg;
 448     BOOL ret = FALSE;
 449
 450     TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
 451      pvData, pcbData);
 452
 453     switch (dwParamType)
 454     {
 455     case CMSG_BARE_CONTENT_PARAM:
 456         if (msg->base.streamed)
 457             SetLastError(E_INVALIDARG);
 458         else
 459             ret = CRYPT_EncodePKCSDigestedData(msg, pvData, pcbData);
 460         break;
 461     case CMSG_CONTENT_PARAM:
 462     {
 463         CRYPT_CONTENT_INFO info;
 464
 465         ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
 466          &info.Content.cbData);
 467         if (ret)
 468         {
 469             info.Content.pbData = CryptMemAlloc(info.Content.cbData);
 470             if (info.Content.pbData)
 471             {
 472                 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
 473                  info.Content.pbData, &info.Content.cbData);
 474                 if (ret)
 475                 {
 476                     char oid_rsa_hashed[] = szOID_RSA_hashedData;
 477
 478                     info.pszObjId = oid_rsa_hashed;
 479                     ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
 480                      PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
 481                 }
 482                 CryptMemFree(info.Content.pbData);
 483             }
 484             else
 485                 ret = FALSE;
 486         }
 487         break;
 488     }
 489     case CMSG_COMPUTED_HASH_PARAM:
 490         ret = CryptGetHashParam(msg->hash, HP_HASHVAL, pvData, pcbData, 0);
 491         break;
 492     case CMSG_VERSION_PARAM:
 493         if (msg->base.state != MsgStateFinalized)
 494             SetLastError(CRYPT_E_MSG_ERROR);
 495         else
 496         {
 497             DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
 498
 499             /* Since the data are always encoded as octets, the version is
 500              * always 0 (see rfc3852, section 7)
 501              */
 502             ret = CRYPT_CopyParam(pvData, pcbData, &version, sizeof(version));
 503         }
 504         break;
 505     default:
 506         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
 507     }
 508     return ret;
 509 }
 510
 511 static BOOL CHashEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
 512  DWORD cbData, BOOL fFinal)
 513 {
 514     CHashEncodeMsg *msg = hCryptMsg;
 515     BOOL ret = FALSE;
 516
 517     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
 518
 519     if (msg->base.state == MsgStateFinalized)
 520         SetLastError(CRYPT_E_MSG_ERROR);
 521     else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
 522     {
 523         /* Doesn't do much, as stream output is never called, and you
 524          * can't get the content.
 525          */
 526         ret = CryptHashData(msg->hash, pbData, cbData, 0);
 527         msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
 528     }
 529     else
 530     {
 531         if (!fFinal)
 532             SetLastError(CRYPT_E_MSG_ERROR);
 533         else
 534         {
 535             ret = CryptHashData(msg->hash, pbData, cbData, 0);
 536             if (ret)
 537             {
 538                 msg->data.pbData = CryptMemAlloc(cbData);
 539                 if (msg->data.pbData)
 540                 {
 541                     memcpy(msg->data.pbData + msg->data.cbData, pbData, cbData);
 542                     msg->data.cbData += cbData;
 543                 }
 544                 else
 545                     ret = FALSE;
 546             }
 547             msg->base.state = MsgStateFinalized;
 548         }
 549     }
 550     return ret;
 551 }
 552
 553 static HCRYPTMSG CHashEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
 554  LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
 555 {
 556     CHashEncodeMsg *msg;
 557     const CMSG_HASHED_ENCODE_INFO *info = pvMsgEncodeInfo;
 558     HCRYPTPROV prov;
 559     ALG_ID algID;
 560
 561     if (info->cbSize != sizeof(CMSG_HASHED_ENCODE_INFO))
 562     {
 563         SetLastError(E_INVALIDARG);
 564         return NULL;
 565     }
 566     if (!(algID = CertOIDToAlgId(info->HashAlgorithm.pszObjId)))
 567     {
 568         SetLastError(CRYPT_E_UNKNOWN_ALGO);
 569         return NULL;
 570     }
 571     if (info->hCryptProv)
 572         prov = info->hCryptProv;
 573     else
 574     {
 575         prov = CRYPT_GetDefaultProvider();
 576         dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
 577     }
 578     msg = CryptMemAlloc(sizeof(CHashEncodeMsg));
 579     if (msg)
 580     {
 581         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
 582          CHashEncodeMsg_Close, CHashEncodeMsg_GetParam, CHashEncodeMsg_Update,
 583          CRYPT_DefaultMsgControl);
 584         msg->prov = prov;
 585         msg->data.cbData = 0;
 586         msg->data.pbData = NULL;
 587         if (!CryptCreateHash(prov, algID, 0, 0, &msg->hash))
 588         {
 589             CryptMsgClose(msg);
 590             msg = NULL;
 591         }
 592     }
 593     return msg;
 594 }
 595
 596 typedef struct _CMSG_SIGNER_ENCODE_INFO_WITH_CMS
 597 {
 598     DWORD                      cbSize;
 599     PCERT_INFO                 pCertInfo;
 600     HCRYPTPROV                 hCryptProv;
 601     DWORD                      dwKeySpec;
 602     CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
 603     void                      *pvHashAuxInfo;
 604     DWORD                      cAuthAttr;
 605     PCRYPT_ATTRIBUTE           rgAuthAttr;
 606     DWORD                      cUnauthAttr;
 607     PCRYPT_ATTRIBUTE           rgUnauthAttr;
 608     CERT_ID                    SignerId;
 609     CRYPT_ALGORITHM_IDENTIFIER HashEncryptionAlgorithm;
 610     void                      *pvHashEncryptionAuxInfo;
 611 } CMSG_SIGNER_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNER_ENCODE_INFO_WITH_CMS;
 612
 613 typedef struct _CMSG_SIGNED_ENCODE_INFO_WITH_CMS
 614 {
 615     DWORD                             cbSize;
 616     DWORD                             cSigners;
 617     PCMSG_SIGNER_ENCODE_INFO_WITH_CMS rgSigners;
 618     DWORD                             cCertEncoded;
 619     PCERT_BLOB                        rgCertEncoded;
 620     DWORD                             cCrlEncoded;
 621     PCRL_BLOB                         rgCrlEncoded;
 622     DWORD                             cAttrCertEncoded;
 623     PCERT_BLOB                        rgAttrCertEncoded;
 624 } CMSG_SIGNED_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNED_ENCODE_INFO_WITH_CMS;
 625
 626 static BOOL CRYPT_IsValidSigner(const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *signer)
 627 {
 628     if (signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO) &&
 629      signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
 630     {
 631         SetLastError(E_INVALIDARG);
 632         return FALSE;
 633     }
 634     if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
 635     {
 636         if (!signer->pCertInfo->SerialNumber.cbData)
 637         {
 638             SetLastError(E_INVALIDARG);
 639             return FALSE;
 640         }
 641         if (!signer->pCertInfo->Issuer.cbData)
 642         {
 643             SetLastError(E_INVALIDARG);
 644             return FALSE;
 645         }
 646     }
 647     else if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
 648     {
 649         switch (signer->SignerId.dwIdChoice)
 650         {
 651         case 0:
 652             if (!signer->pCertInfo->SerialNumber.cbData)
 653             {
 654                 SetLastError(E_INVALIDARG);
 655                 return FALSE;
 656             }
 657             if (!signer->pCertInfo->Issuer.cbData)
 658             {
 659                 SetLastError(E_INVALIDARG);
 660                 return FALSE;
 661             }
 662             break;
 663         case CERT_ID_ISSUER_SERIAL_NUMBER:
 664             if (!signer->SignerId.u.IssuerSerialNumber.SerialNumber.cbData)
 665             {
 666                 SetLastError(E_INVALIDARG);
 667                 return FALSE;
 668             }
 669             if (!signer->SignerId.u.IssuerSerialNumber.Issuer.cbData)
 670             {
 671                 SetLastError(E_INVALIDARG);
 672                 return FALSE;
 673             }
 674             break;
 675         case CERT_ID_KEY_IDENTIFIER:
 676             if (!signer->SignerId.u.KeyId.cbData)
 677             {
 678                 SetLastError(E_INVALIDARG);
 679                 return FALSE;
 680             }
 681             break;
 682         default:
 683             SetLastError(E_INVALIDARG);
 684         }
 685         if (signer->HashEncryptionAlgorithm.pszObjId)
 686         {
 687             FIXME("CMSG_SIGNER_ENCODE_INFO with CMS fields unsupported\n");
 688             return FALSE;
 689         }
 690     }
 691     if (!signer->hCryptProv)
 692     {
 693         SetLastError(E_INVALIDARG);
 694         return FALSE;
 695     }
 696     if (!CertOIDToAlgId(signer->HashAlgorithm.pszObjId))
 697     {
 698         SetLastError(CRYPT_E_UNKNOWN_ALGO);
 699         return FALSE;
 700     }
 701     return TRUE;
 702 }
 703
 704 static BOOL CRYPT_ConstructBlob(CRYPT_DATA_BLOB *out, const CRYPT_DATA_BLOB *in)
 705 {
 706     BOOL ret = TRUE;
 707
 708     out->cbData = in->cbData;
 709     if (out->cbData)
 710     {
 711         out->pbData = CryptMemAlloc(out->cbData);
 712         if (out->pbData)
 713             memcpy(out->pbData, in->pbData, out->cbData);
 714         else
 715             ret = FALSE;
 716     }
 717     else
 718         out->pbData = NULL;
 719     return ret;
 720 }
 721
 722 static BOOL CRYPT_ConstructBlobArray(DWORD *outCBlobs,
 723  PCRYPT_DATA_BLOB *outPBlobs, DWORD cBlobs, const CRYPT_DATA_BLOB *pBlobs)
 724 {
 725     BOOL ret = TRUE;
 726
 727     *outCBlobs = cBlobs;
 728     if (cBlobs)
 729     {
 730         *outPBlobs = CryptMemAlloc(cBlobs * sizeof(CRYPT_DATA_BLOB));
 731         if (*outPBlobs)
 732         {
 733             DWORD i;
 734
 735             memset(*outPBlobs, 0, cBlobs * sizeof(CRYPT_DATA_BLOB));
 736             for (i = 0; ret && i < cBlobs; i++)
 737                 ret = CRYPT_ConstructBlob(&(*outPBlobs)[i], &pBlobs[i]);
 738         }
 739         else
 740             ret = FALSE;
 741     }
 742     return ret;
 743 }
 744
 745 static void CRYPT_FreeBlobArray(DWORD cBlobs, PCRYPT_DATA_BLOB blobs)
 746 {
 747     DWORD i;
 748
 749     for (i = 0; i < cBlobs; i++)
 750         CryptMemFree(blobs[i].pbData);
 751     CryptMemFree(blobs);
 752 }
 753
 754 static BOOL CRYPT_ConstructAttribute(CRYPT_ATTRIBUTE *out,
 755  const CRYPT_ATTRIBUTE *in)
 756 {
 757     BOOL ret;
 758
 759     out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
 760     if (out->pszObjId)
 761     {
 762         strcpy(out->pszObjId, in->pszObjId);
 763         ret = CRYPT_ConstructBlobArray(&out->cValue, &out->rgValue,
 764          in->cValue, in->rgValue);
 765     }
 766     else
 767         ret = FALSE;
 768     return ret;
 769 }
 770
 771 static BOOL CRYPT_ConstructAttributes(CRYPT_ATTRIBUTES *out,
 772  const CRYPT_ATTRIBUTES *in)
 773 {
 774     BOOL ret = TRUE;
 775
 776     out->cAttr = in->cAttr;
 777     if (out->cAttr)
 778     {
 779         out->rgAttr = CryptMemAlloc(out->cAttr * sizeof(CRYPT_ATTRIBUTE));
 780         if (out->rgAttr)
 781         {
 782             DWORD i;
 783
 784             memset(out->rgAttr, 0, out->cAttr * sizeof(CRYPT_ATTRIBUTE));
 785             for (i = 0; ret && i < out->cAttr; i++)
 786                 ret = CRYPT_ConstructAttribute(&out->rgAttr[i], &in->rgAttr[i]);
 787         }
 788         else
 789             ret = FALSE;
 790     }
 791     else
 792         out->rgAttr = NULL;
 793     return ret;
 794 }
 795
 796 /* Constructs a CMSG_CMS_SIGNER_INFO from a CMSG_SIGNER_ENCODE_INFO_WITH_CMS. */
 797 static BOOL CSignerInfo_Construct(CMSG_CMS_SIGNER_INFO *info,
 798  const CMSG_SIGNER_ENCODE_INFO_WITH_CMS *in)
 799 {
 800     BOOL ret;
 801
 802     if (in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO))
 803     {
 804         info->dwVersion = CMSG_SIGNER_INFO_V1;
 805         ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
 806          &in->pCertInfo->Issuer);
 807         if (ret)
 808             ret = CRYPT_ConstructBlob(
 809              &info->SignerId.u.IssuerSerialNumber.SerialNumber,
 810              &in->pCertInfo->SerialNumber);
 811         info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
 812         info->HashEncryptionAlgorithm.pszObjId =
 813          in->pCertInfo->SubjectPublicKeyInfo.Algorithm.pszObjId;
 814         if (ret)
 815             ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
 816              &in->pCertInfo->SubjectPublicKeyInfo.Algorithm.Parameters);
 817     }
 818     else
 819     {
 820         const CRYPT_ALGORITHM_IDENTIFIER *pEncrAlg;
 821
 822         /* Implicitly in->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS).
 823          * See CRYPT_IsValidSigner.
 824          */
 825         if (!in->SignerId.dwIdChoice)
 826         {
 827             info->dwVersion = CMSG_SIGNER_INFO_V1;
 828             ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
 829              &in->pCertInfo->Issuer);
 830             if (ret)
 831                 ret = CRYPT_ConstructBlob(
 832                  &info->SignerId.u.IssuerSerialNumber.SerialNumber,
 833                  &in->pCertInfo->SerialNumber);
 834             info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
 835         }
 836         else if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
 837         {
 838             info->dwVersion = CMSG_SIGNER_INFO_V1;
 839             info->SignerId.dwIdChoice = CERT_ID_ISSUER_SERIAL_NUMBER;
 840             ret = CRYPT_ConstructBlob(&info->SignerId.u.IssuerSerialNumber.Issuer,
 841              &in->SignerId.u.IssuerSerialNumber.Issuer);
 842             if (ret)
 843                 ret = CRYPT_ConstructBlob(
 844                  &info->SignerId.u.IssuerSerialNumber.SerialNumber,
 845                  &in->SignerId.u.IssuerSerialNumber.SerialNumber);
 846         }
 847         else
 848         {
 849             /* Implicitly dwIdChoice == CERT_ID_KEY_IDENTIFIER */
 850             info->dwVersion = CMSG_SIGNER_INFO_V3;
 851             info->SignerId.dwIdChoice = CERT_ID_KEY_IDENTIFIER;
 852             ret = CRYPT_ConstructBlob(&info->SignerId.u.KeyId,
 853              &in->SignerId.u.KeyId);
 854         }
 855         pEncrAlg = in->HashEncryptionAlgorithm.pszObjId ?
 856          &in->HashEncryptionAlgorithm :
 857          &in->pCertInfo->SubjectPublicKeyInfo.Algorithm;
 858         info->HashEncryptionAlgorithm.pszObjId = pEncrAlg->pszObjId;
 859         if (ret)
 860             ret = CRYPT_ConstructBlob(&info->HashEncryptionAlgorithm.Parameters,
 861              &pEncrAlg->Parameters);
 862     }
 863     /* Assumption:  algorithm IDs will point to static strings, not
 864      * stack-based ones, so copying the pointer values is safe.
 865      */
 866     info->HashAlgorithm.pszObjId = in->HashAlgorithm.pszObjId;
 867     if (ret)
 868         ret = CRYPT_ConstructBlob(&info->HashAlgorithm.Parameters,
 869          &in->HashAlgorithm.Parameters);
 870     if (ret)
 871         ret = CRYPT_ConstructAttributes(&info->AuthAttrs,
 872          (CRYPT_ATTRIBUTES *)&in->cAuthAttr);
 873     if (ret)
 874         ret = CRYPT_ConstructAttributes(&info->UnauthAttrs,
 875          (CRYPT_ATTRIBUTES *)&in->cUnauthAttr);
 876     return ret;
 877 }
 878
 879 static void CSignerInfo_Free(CMSG_CMS_SIGNER_INFO *info)
 880 {
 881     DWORD i, j;
 882
 883     if (info->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
 884     {
 885         CryptMemFree(info->SignerId.u.IssuerSerialNumber.Issuer.pbData);
 886         CryptMemFree(info->SignerId.u.IssuerSerialNumber.SerialNumber.pbData);
 887     }
 888     else
 889         CryptMemFree(info->SignerId.u.KeyId.pbData);
 890     CryptMemFree(info->HashAlgorithm.Parameters.pbData);
 891     CryptMemFree(info->HashEncryptionAlgorithm.Parameters.pbData);
 892     CryptMemFree(info->EncryptedHash.pbData);
 893     for (i = 0; i < info->AuthAttrs.cAttr; i++)
 894     {
 895         for (j = 0; j < info->AuthAttrs.rgAttr[i].cValue; j++)
 896             CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue[j].pbData);
 897         CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue);
 898         CryptMemFree(info->AuthAttrs.rgAttr[i].pszObjId);
 899     }
 900     CryptMemFree(info->AuthAttrs.rgAttr);
 901     for (i = 0; i < info->UnauthAttrs.cAttr; i++)
 902     {
 903         for (j = 0; j < info->UnauthAttrs.rgAttr[i].cValue; j++)
 904             CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue[j].pbData);
 905         CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue);
 906         CryptMemFree(info->UnauthAttrs.rgAttr[i].pszObjId);
 907     }
 908     CryptMemFree(info->UnauthAttrs.rgAttr);
 909 }
 910
 911 typedef struct _CSignerHandles
 912 {
 913     HCRYPTHASH contentHash;
 914     HCRYPTHASH authAttrHash;
 915 } CSignerHandles;
 916
 917 typedef struct _CSignedMsgData
 918 {
 919     CRYPT_SIGNED_INFO *info;
 920     DWORD              cSignerHandle;
 921     CSignerHandles    *signerHandles;
 922 } CSignedMsgData;
 923
 924 /* Constructs the signer handles for the signerIndex'th signer of msg_data.
 925  * Assumes signerIndex is a valid idnex, and that msg_data's info has already
 926  * been constructed.
 927  */
 928 static BOOL CSignedMsgData_ConstructSignerHandles(CSignedMsgData *msg_data,
 929  DWORD signerIndex, HCRYPTPROV crypt_prov)
 930 {
 931     ALG_ID algID;
 932     BOOL ret;
 933
 934     algID = CertOIDToAlgId(
 935      msg_data->info->rgSignerInfo[signerIndex].HashAlgorithm.pszObjId);
 936     ret = CryptCreateHash(crypt_prov, algID, 0, 0,
 937      &msg_data->signerHandles->contentHash);
 938     if (ret && msg_data->info->rgSignerInfo[signerIndex].AuthAttrs.cAttr > 0)
 939         ret = CryptCreateHash(crypt_prov, algID, 0, 0,
 940          &msg_data->signerHandles->authAttrHash);
 941     return ret;
 942 }
 943
 944 /* Allocates a CSignedMsgData's handles.  Assumes its info has already been
 945  * constructed.
 946  */
 947 static BOOL CSignedMsgData_AllocateHandles(CSignedMsgData *msg_data)
 948 {
 949     BOOL ret = TRUE;
 950
 951     if (msg_data->info->cSignerInfo)
 952     {
 953         msg_data->signerHandles =
 954          CryptMemAlloc(msg_data->info->cSignerInfo * sizeof(CSignerHandles));
 955         if (msg_data->signerHandles)
 956         {
 957             msg_data->cSignerHandle = msg_data->info->cSignerInfo;
 958             memset(msg_data->signerHandles, 0,
 959              msg_data->info->cSignerInfo * sizeof(CSignerHandles));
 960         }
 961         else
 962         {
 963             msg_data->cSignerHandle = 0;
 964             ret = FALSE;
 965         }
 966     }
 967     else
 968     {
 969         msg_data->cSignerHandle = 0;
 970         msg_data->signerHandles = NULL;
 971     }
 972     return ret;
 973 }
 974
 975 static void CSignedMsgData_CloseHandles(CSignedMsgData *msg_data)
 976 {
 977     DWORD i;
 978
 979     for (i = 0; i < msg_data->cSignerHandle; i++)
 980     {
 981         if (msg_data->signerHandles[i].contentHash)
 982             CryptDestroyHash(msg_data->signerHandles[i].contentHash);
 983         if (msg_data->signerHandles[i].authAttrHash)
 984             CryptDestroyHash(msg_data->signerHandles[i].authAttrHash);
 985     }
 986     CryptMemFree(msg_data->signerHandles);
 987     msg_data->signerHandles = NULL;
 988     msg_data->cSignerHandle = 0;
 989 }
 990
 991 static BOOL CSignedMsgData_UpdateHash(CSignedMsgData *msg_data,
 992  const BYTE *pbData, DWORD cbData)
 993 {
 994     DWORD i;
 995     BOOL ret = TRUE;
 996
 997     for (i = 0; ret && i < msg_data->cSignerHandle; i++)
 998         ret = CryptHashData(msg_data->signerHandles[i].contentHash, pbData,
 999          cbData, 0);
1000     return ret;
1001 }
1002
1003 static BOOL CRYPT_AppendAttribute(CRYPT_ATTRIBUTES *out,
1004  const CRYPT_ATTRIBUTE *in)
1005 {
1006     BOOL ret = FALSE;
1007
1008     out->rgAttr = CryptMemRealloc(out->rgAttr,
1009      (out->cAttr + 1) * sizeof(CRYPT_ATTRIBUTE));
1010     if (out->rgAttr)
1011     {
1012         ret = CRYPT_ConstructAttribute(&out->rgAttr[out->cAttr], in);
1013         if (ret)
1014             out->cAttr++;
1015     }
1016     return ret;
1017 }
1018
1019 static BOOL CSignedMsgData_AppendMessageDigestAttribute(
1020  CSignedMsgData *msg_data, DWORD signerIndex)
1021 {
1022     BOOL ret;
1023     DWORD size;
1024     CRYPT_HASH_BLOB hash = { 0, NULL }, encodedHash = { 0, NULL };
1025     char messageDigest[] = szOID_RSA_messageDigest;
1026     CRYPT_ATTRIBUTE messageDigestAttr = { messageDigest, 1, &encodedHash };
1027
1028     size = sizeof(DWORD);
1029     ret = CryptGetHashParam(
1030      msg_data->signerHandles[signerIndex].contentHash, HP_HASHSIZE,
1031      (LPBYTE)&hash.cbData, &size, 0);
1032     if (ret)
1033     {
1034         hash.pbData = CryptMemAlloc(hash.cbData);
1035         ret = CryptGetHashParam(
1036          msg_data->signerHandles[signerIndex].contentHash, HP_HASHVAL,
1037          hash.pbData, &hash.cbData, 0);
1038         if (ret)
1039         {
1040             ret = CRYPT_AsnEncodeOctets(0, NULL, &hash, CRYPT_ENCODE_ALLOC_FLAG,
1041              NULL, (LPBYTE)&encodedHash.pbData, &encodedHash.cbData);
1042             if (ret)
1043             {
1044                 ret = CRYPT_AppendAttribute(
1045                  &msg_data->info->rgSignerInfo[signerIndex].AuthAttrs,
1046                  &messageDigestAttr);
1047                 LocalFree(encodedHash.pbData);
1048             }
1049         }
1050         CryptMemFree(hash.pbData);
1051     }
1052     return ret;
1053 }
1054
1055 typedef enum {
1056     Sign,
1057     Verify
1058 } SignOrVerify;
1059
1060 static BOOL CSignedMsgData_UpdateAuthenticatedAttributes(
1061  CSignedMsgData *msg_data, SignOrVerify flag)
1062 {
1063     DWORD i;
1064     BOOL ret = TRUE;
1065
1066     TRACE("(%p)\n", msg_data);
1067
1068     for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
1069     {
1070         if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
1071         {
1072             if (flag == Sign)
1073             {
1074                 BYTE oid_rsa_data_encoded[] = { 0x06,0x09,0x2a,0x86,0x48,0x86,
1075                  0xf7,0x0d,0x01,0x07,0x01 };
1076                 CRYPT_DATA_BLOB content = { sizeof(oid_rsa_data_encoded),
1077                  oid_rsa_data_encoded };
1078                 char contentType[] = szOID_RSA_contentType;
1079                 CRYPT_ATTRIBUTE contentTypeAttr = { contentType, 1, &content };
1080
1081                 /* FIXME: does this depend on inner OID? */
1082                 ret = CRYPT_AppendAttribute(
1083                  &msg_data->info->rgSignerInfo[i].AuthAttrs, &contentTypeAttr);
1084                 if (ret)
1085                     ret = CSignedMsgData_AppendMessageDigestAttribute(msg_data,
1086                      i);
1087             }
1088             if (ret)
1089             {
1090                 LPBYTE encodedAttrs;
1091                 DWORD size;
1092
1093                 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, PKCS_ATTRIBUTES,
1094                  &msg_data->info->rgSignerInfo[i].AuthAttrs,
1095                  CRYPT_ENCODE_ALLOC_FLAG, NULL, &encodedAttrs, &size);
1096                 if (ret)
1097                 {
1098                     ret = CryptHashData(
1099                      msg_data->signerHandles[i].authAttrHash, encodedAttrs,
1100                      size, 0);
1101                     LocalFree(encodedAttrs);
1102                 }
1103             }
1104         }
1105     }
1106     TRACE("returning %d\n", ret);
1107     return ret;
1108 }
1109
1110 static void CRYPT_ReverseBytes(CRYPT_HASH_BLOB *hash)
1111 {
1112     DWORD i;
1113     BYTE tmp;
1114
1115     for (i = 0; i < hash->cbData / 2; i++)
1116     {
1117         tmp = hash->pbData[hash->cbData - i - 1];
1118         hash->pbData[hash->cbData - i - 1] = hash->pbData[i];
1119         hash->pbData[i] = tmp;
1120     }
1121 }
1122
1123 static BOOL CSignedMsgData_Sign(CSignedMsgData *msg_data)
1124 {
1125     DWORD i;
1126     BOOL ret = TRUE;
1127
1128     TRACE("(%p)\n", msg_data);
1129
1130     for (i = 0; ret && i < msg_data->info->cSignerInfo; i++)
1131     {
1132         HCRYPTHASH hash;
1133
1134         if (msg_data->info->rgSignerInfo[i].AuthAttrs.cAttr)
1135             hash = msg_data->signerHandles[i].authAttrHash;
1136         else
1137             hash = msg_data->signerHandles[i].contentHash;
1138         ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0, NULL,
1139          &msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1140         if (ret)
1141         {
1142             msg_data->info->rgSignerInfo[i].EncryptedHash.pbData =
1143              CryptMemAlloc(
1144              msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1145             if (msg_data->info->rgSignerInfo[i].EncryptedHash.pbData)
1146             {
1147                 ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0,
1148                  msg_data->info->rgSignerInfo[i].EncryptedHash.pbData,
1149                  &msg_data->info->rgSignerInfo[i].EncryptedHash.cbData);
1150                 if (ret)
1151                     CRYPT_ReverseBytes(
1152                      &msg_data->info->rgSignerInfo[i].EncryptedHash);
1153             }
1154             else
1155                 ret = FALSE;
1156         }
1157     }
1158     return ret;
1159 }
1160
1161 static BOOL CSignedMsgData_Update(CSignedMsgData *msg_data,
1162  const BYTE *pbData, DWORD cbData, BOOL fFinal, SignOrVerify flag)
1163 {
1164     BOOL ret = CSignedMsgData_UpdateHash(msg_data, pbData, cbData);
1165
1166     if (ret && fFinal)
1167     {
1168         ret = CSignedMsgData_UpdateAuthenticatedAttributes(msg_data, flag);
1169         if (ret && flag == Sign)
1170             ret = CSignedMsgData_Sign(msg_data);
1171     }
1172     return ret;
1173 }
1174
1175 typedef struct _CSignedEncodeMsg
1176 {
1177     CryptMsgBase    base;
1178     LPSTR           innerOID;
1179     CRYPT_DATA_BLOB data;
1180     CSignedMsgData  msg_data;
1181 } CSignedEncodeMsg;
1182
1183 static void CSignedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
1184 {
1185     CSignedEncodeMsg *msg = hCryptMsg;
1186     DWORD i;
1187
1188     CryptMemFree(msg->innerOID);
1189     CryptMemFree(msg->data.pbData);
1190     CRYPT_FreeBlobArray(msg->msg_data.info->cCertEncoded,
1191      msg->msg_data.info->rgCertEncoded);
1192     CRYPT_FreeBlobArray(msg->msg_data.info->cCrlEncoded,
1193      msg->msg_data.info->rgCrlEncoded);
1194     for (i = 0; i < msg->msg_data.info->cSignerInfo; i++)
1195         CSignerInfo_Free(&msg->msg_data.info->rgSignerInfo[i]);
1196     CSignedMsgData_CloseHandles(&msg->msg_data);
1197     CryptMemFree(msg->msg_data.info->rgSignerInfo);
1198     CryptMemFree(msg->msg_data.info);
1199 }
1200
1201 static BOOL CSignedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1202  DWORD dwIndex, void *pvData, DWORD *pcbData)
1203 {
1204     CSignedEncodeMsg *msg = hCryptMsg;
1205     BOOL ret = FALSE;
1206
1207     switch (dwParamType)
1208     {
1209     case CMSG_CONTENT_PARAM:
1210     {
1211         CRYPT_CONTENT_INFO info;
1212
1213         ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
1214          &info.Content.cbData);
1215         if (ret)
1216         {
1217             info.Content.pbData = CryptMemAlloc(info.Content.cbData);
1218             if (info.Content.pbData)
1219             {
1220                 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
1221                  info.Content.pbData, &info.Content.cbData);
1222                 if (ret)
1223                 {
1224                     char oid_rsa_signed[] = szOID_RSA_signedData;
1225
1226                     info.pszObjId = oid_rsa_signed;
1227                     ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
1228                      PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
1229                 }
1230                 CryptMemFree(info.Content.pbData);
1231             }
1232             else
1233                 ret = FALSE;
1234         }
1235         break;
1236     }
1237     case CMSG_BARE_CONTENT_PARAM:
1238     {
1239         CRYPT_SIGNED_INFO info;
1240         BOOL freeContent = FALSE;
1241
1242         info = *msg->msg_data.info;
1243         if (!msg->innerOID || !strcmp(msg->innerOID, szOID_RSA_data))
1244         {
1245             char oid_rsa_data[] = szOID_RSA_data;
1246
1247             /* Quirk:  OID is only encoded messages if an update has happened */
1248             if (msg->base.state != MsgStateInit)
1249                 info.content.pszObjId = oid_rsa_data;
1250             else
1251                 info.content.pszObjId = NULL;
1252             if (msg->data.cbData)
1253             {
1254                 CRYPT_DATA_BLOB blob = { msg->data.cbData, msg->data.pbData };
1255
1256                 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
1257                  &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL,
1258                  &info.content.Content.pbData, &info.content.Content.cbData);
1259                 freeContent = TRUE;
1260             }
1261             else
1262             {
1263                 info.content.Content.cbData = 0;
1264                 info.content.Content.pbData = NULL;
1265                 ret = TRUE;
1266             }
1267         }
1268         else
1269         {
1270             info.content.pszObjId = msg->innerOID;
1271             info.content.Content.cbData = msg->data.cbData;
1272             info.content.Content.pbData = msg->data.pbData;
1273             ret = TRUE;
1274         }
1275         if (ret)
1276         {
1277             ret = CRYPT_AsnEncodeCMSSignedInfo(&info, pvData, pcbData);
1278             if (freeContent)
1279                 LocalFree(info.content.Content.pbData);
1280         }
1281         break;
1282     }
1283     case CMSG_COMPUTED_HASH_PARAM:
1284         if (dwIndex >= msg->msg_data.cSignerHandle)
1285             SetLastError(CRYPT_E_INVALID_INDEX);
1286         else
1287             ret = CryptGetHashParam(
1288              msg->msg_data.signerHandles[dwIndex].contentHash, HP_HASHVAL,
1289              pvData, pcbData, 0);
1290         break;
1291     case CMSG_ENCODED_SIGNER:
1292         if (dwIndex >= msg->msg_data.info->cSignerInfo)
1293             SetLastError(CRYPT_E_INVALID_INDEX);
1294         else
1295             ret = CryptEncodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
1296              CMS_SIGNER_INFO, &msg->msg_data.info->rgSignerInfo[dwIndex], 0,
1297              NULL, pvData, pcbData);
1298         break;
1299     case CMSG_VERSION_PARAM:
1300         ret = CRYPT_CopyParam(pvData, pcbData, &msg->msg_data.info->version,
1301          sizeof(msg->msg_data.info->version));
1302         break;
1303     default:
1304         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1305     }
1306     return ret;
1307 }
1308
1309 static BOOL CSignedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1310  DWORD cbData, BOOL fFinal)
1311 {
1312     CSignedEncodeMsg *msg = hCryptMsg;
1313     BOOL ret = FALSE;
1314
1315     if (msg->base.state == MsgStateFinalized)
1316         SetLastError(CRYPT_E_MSG_ERROR);
1317     else if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
1318     {
1319         ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData, fFinal,
1320          Sign);
1321         if (msg->base.streamed)
1322             FIXME("streamed partial stub\n");
1323         msg->base.state = fFinal ? MsgStateFinalized : MsgStateUpdated;
1324     }
1325     else
1326     {
1327         if (!fFinal)
1328             SetLastError(CRYPT_E_MSG_ERROR);
1329         else
1330         {
1331             if (cbData)
1332             {
1333                 msg->data.pbData = CryptMemAlloc(cbData);
1334                 if (msg->data.pbData)
1335                 {
1336                     memcpy(msg->data.pbData, pbData, cbData);
1337                     msg->data.cbData = cbData;
1338                     ret = TRUE;
1339                 }
1340             }
1341             else
1342                 ret = TRUE;
1343             if (ret)
1344                 ret = CSignedMsgData_Update(&msg->msg_data, pbData, cbData,
1345                  fFinal, Sign);
1346             msg->base.state = MsgStateFinalized;
1347         }
1348     }
1349     return ret;
1350 }
1351
1352 static HCRYPTMSG CSignedEncodeMsg_Open(DWORD dwFlags,
1353  const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
1354  PCMSG_STREAM_INFO pStreamInfo)
1355 {
1356     const CMSG_SIGNED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
1357     DWORD i;
1358     CSignedEncodeMsg *msg;
1359
1360     if (info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO) &&
1361      info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS))
1362     {
1363         SetLastError(E_INVALIDARG);
1364         return NULL;
1365     }
1366     if (info->cbSize == sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS) &&
1367      info->cAttrCertEncoded)
1368     {
1369         FIXME("CMSG_SIGNED_ENCODE_INFO with CMS fields unsupported\n");
1370         return NULL;
1371     }
1372     for (i = 0; i < info->cSigners; i++)
1373         if (!CRYPT_IsValidSigner(&info->rgSigners[i]))
1374             return NULL;
1375     msg = CryptMemAlloc(sizeof(CSignedEncodeMsg));
1376     if (msg)
1377     {
1378         BOOL ret = TRUE;
1379
1380         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1381          CSignedEncodeMsg_Close, CSignedEncodeMsg_GetParam,
1382          CSignedEncodeMsg_Update, CRYPT_DefaultMsgControl);
1383         if (pszInnerContentObjID)
1384         {
1385             msg->innerOID = CryptMemAlloc(strlen(pszInnerContentObjID) + 1);
1386             if (msg->innerOID)
1387                 strcpy(msg->innerOID, pszInnerContentObjID);
1388             else
1389                 ret = FALSE;
1390         }
1391         else
1392             msg->innerOID = NULL;
1393         msg->data.cbData = 0;
1394         msg->data.pbData = NULL;
1395         if (ret)
1396             msg->msg_data.info = CryptMemAlloc(sizeof(CRYPT_SIGNED_INFO));
1397         else
1398             msg->msg_data.info = NULL;
1399         if (msg->msg_data.info)
1400         {
1401             memset(msg->msg_data.info, 0, sizeof(CRYPT_SIGNED_INFO));
1402             msg->msg_data.info->version = CMSG_SIGNED_DATA_V1;
1403         }
1404         else
1405             ret = FALSE;
1406         if (ret)
1407         {
1408             if (info->cSigners)
1409             {
1410                 msg->msg_data.info->rgSignerInfo =
1411                  CryptMemAlloc(info->cSigners * sizeof(CMSG_CMS_SIGNER_INFO));
1412                 if (msg->msg_data.info->rgSignerInfo)
1413                 {
1414                     msg->msg_data.info->cSignerInfo = info->cSigners;
1415                     memset(msg->msg_data.info->rgSignerInfo, 0,
1416                      msg->msg_data.info->cSignerInfo *
1417                      sizeof(CMSG_CMS_SIGNER_INFO));
1418                     ret = CSignedMsgData_AllocateHandles(&msg->msg_data);
1419                     for (i = 0; ret && i < msg->msg_data.info->cSignerInfo; i++)
1420                     {
1421                         if (info->rgSigners[i].SignerId.dwIdChoice ==
1422                          CERT_ID_KEY_IDENTIFIER)
1423                             msg->msg_data.info->version = CMSG_SIGNED_DATA_V3;
1424                         ret = CSignerInfo_Construct(
1425                          &msg->msg_data.info->rgSignerInfo[i],
1426                          &info->rgSigners[i]);
1427                         if (ret)
1428                         {
1429                             ret = CSignedMsgData_ConstructSignerHandles(
1430                              &msg->msg_data, i, info->rgSigners[i].hCryptProv);
1431                             if (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1432                                 CryptReleaseContext(info->rgSigners[i].hCryptProv,
1433                                  0);
1434                         }
1435                     }
1436                 }
1437                 else
1438                     ret = FALSE;
1439             }
1440             else
1441             {
1442                 msg->msg_data.info->cSignerInfo = 0;
1443                 msg->msg_data.signerHandles = NULL;
1444                 msg->msg_data.cSignerHandle = 0;
1445             }
1446         }
1447         if (ret)
1448             ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCertEncoded,
1449              &msg->msg_data.info->rgCertEncoded, info->cCertEncoded,
1450              info->rgCertEncoded);
1451         if (ret)
1452             ret = CRYPT_ConstructBlobArray(&msg->msg_data.info->cCrlEncoded,
1453              &msg->msg_data.info->rgCrlEncoded, info->cCrlEncoded,
1454              info->rgCrlEncoded);
1455         if (!ret)
1456         {
1457             CSignedEncodeMsg_Close(msg);
1458             msg = NULL;
1459         }
1460     }
1461     return msg;
1462 }
1463
1464 HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
1465  DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
1466  PCMSG_STREAM_INFO pStreamInfo)
1467 {
1468     HCRYPTMSG msg = NULL;
1469
1470     TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
1471      dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
1472
1473     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
1474     {
1475         SetLastError(E_INVALIDARG);
1476         return NULL;
1477     }
1478     switch (dwMsgType)
1479     {
1480     case CMSG_DATA:
1481         msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1482          pszInnerContentObjID, pStreamInfo);
1483         break;
1484     case CMSG_HASHED:
1485         msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1486          pszInnerContentObjID, pStreamInfo);
1487         break;
1488     case CMSG_SIGNED:
1489         msg = CSignedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1490          pszInnerContentObjID, pStreamInfo);
1491         break;
1492     case CMSG_ENVELOPED:
1493         FIXME("unimplemented for type CMSG_ENVELOPED\n");
1494         break;
1495     case CMSG_SIGNED_AND_ENVELOPED:
1496     case CMSG_ENCRYPTED:
1497         /* defined but invalid, fall through */
1498     default:
1499         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1500     }
1501     return msg;
1502 }
1503
1504 typedef struct _CDecodeMsg
1505 {
1506     CryptMsgBase           base;
1507     DWORD                  type;
1508     HCRYPTPROV             crypt_prov;
1509     union {
1510         HCRYPTHASH     hash;
1511         CSignedMsgData signed_data;
1512     } u;
1513     CRYPT_DATA_BLOB        msg_data;
1514     CRYPT_DATA_BLOB        detached_data;
1515     PCONTEXT_PROPERTY_LIST properties;
1516 } CDecodeMsg;
1517
1518 static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
1519 {
1520     CDecodeMsg *msg = hCryptMsg;
1521
1522     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1523         CryptReleaseContext(msg->crypt_prov, 0);
1524     switch (msg->type)
1525     {
1526     case CMSG_HASHED:
1527         if (msg->u.hash)
1528             CryptDestroyHash(msg->u.hash);
1529         break;
1530     case CMSG_SIGNED:
1531         if (msg->u.signed_data.info)
1532         {
1533             LocalFree(msg->u.signed_data.info);
1534             CSignedMsgData_CloseHandles(&msg->u.signed_data);
1535         }
1536         break;
1537     }
1538     CryptMemFree(msg->msg_data.pbData);
1539     CryptMemFree(msg->detached_data.pbData);
1540     ContextPropertyList_Free(msg->properties);
1541 }
1542
1543 static BOOL CDecodeMsg_CopyData(CRYPT_DATA_BLOB *blob, const BYTE *pbData,
1544  DWORD cbData)
1545 {
1546     BOOL ret = TRUE;
1547
1548     if (cbData)
1549     {
1550         if (blob->cbData)
1551             blob->pbData = CryptMemRealloc(blob->pbData,
1552              blob->cbData + cbData);
1553         else
1554             blob->pbData = CryptMemAlloc(cbData);
1555         if (blob->pbData)
1556         {
1557             memcpy(blob->pbData + blob->cbData, pbData, cbData);
1558             blob->cbData += cbData;
1559         }
1560         else
1561             ret = FALSE;
1562     }
1563     return ret;
1564 }
1565
1566 static BOOL CDecodeMsg_DecodeDataContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob)
1567 {
1568     BOOL ret;
1569     CRYPT_DATA_BLOB *data;
1570     DWORD size;
1571
1572     ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
1573      blob->pbData, blob->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &data, &size);
1574     if (ret)
1575     {
1576         ret = ContextPropertyList_SetProperty(msg->properties,
1577          CMSG_CONTENT_PARAM, data->pbData, data->cbData);
1578         LocalFree(data);
1579     }
1580     return ret;
1581 }
1582
1583 static void CDecodeMsg_SaveAlgorithmID(CDecodeMsg *msg, DWORD param,
1584  const CRYPT_ALGORITHM_IDENTIFIER *id)
1585 {
1586     static const BYTE nullParams[] = { ASN_NULL, 0 };
1587     CRYPT_ALGORITHM_IDENTIFIER *copy;
1588     DWORD len = sizeof(CRYPT_ALGORITHM_IDENTIFIER);
1589
1590     /* Linearize algorithm id */
1591     len += strlen(id->pszObjId) + 1;
1592     len += id->Parameters.cbData;
1593     copy = CryptMemAlloc(len);
1594     if (copy)
1595     {
1596         copy->pszObjId =
1597          (LPSTR)((BYTE *)copy + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1598         strcpy(copy->pszObjId, id->pszObjId);
1599         copy->Parameters.pbData = (BYTE *)copy->pszObjId + strlen(id->pszObjId)
1600          + 1;
1601         /* Trick:  omit NULL parameters */
1602         if (id->Parameters.cbData == sizeof(nullParams) &&
1603          !memcmp(id->Parameters.pbData, nullParams, sizeof(nullParams)))
1604         {
1605             copy->Parameters.cbData = 0;
1606             len -= sizeof(nullParams);
1607         }
1608         else
1609             copy->Parameters.cbData = id->Parameters.cbData;
1610         if (copy->Parameters.cbData)
1611             memcpy(copy->Parameters.pbData, id->Parameters.pbData,
1612              id->Parameters.cbData);
1613         ContextPropertyList_SetProperty(msg->properties, param, (BYTE *)copy,
1614          len);
1615         CryptMemFree(copy);
1616     }
1617 }
1618
1619 static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
1620 {
1621     id->pszObjId = (LPSTR)((BYTE *)id + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1622     id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
1623 }
1624
1625 static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
1626  const CRYPT_DER_BLOB *blob)
1627 {
1628     BOOL ret;
1629     CRYPT_DIGESTED_DATA *digestedData;
1630     DWORD size;
1631
1632     ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
1633      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
1634      &size);
1635     if (ret)
1636     {
1637         ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
1638          (const BYTE *)&digestedData->version, sizeof(digestedData->version));
1639         CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
1640          &digestedData->DigestAlgorithm);
1641         ContextPropertyList_SetProperty(msg->properties,
1642          CMSG_INNER_CONTENT_TYPE_PARAM,
1643          (const BYTE *)digestedData->ContentInfo.pszObjId,
1644          digestedData->ContentInfo.pszObjId ?
1645          strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
1646         if (!(msg->base.open_flags & CMSG_DETACHED_FLAG))
1647         {
1648             if (digestedData->ContentInfo.Content.cbData)
1649                 CDecodeMsg_DecodeDataContent(msg,
1650                  &digestedData->ContentInfo.Content);
1651             else
1652                 ContextPropertyList_SetProperty(msg->properties,
1653                  CMSG_CONTENT_PARAM, NULL, 0);
1654         }
1655         ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
1656          digestedData->hash.pbData, digestedData->hash.cbData);
1657         LocalFree(digestedData);
1658     }
1659     return ret;
1660 }
1661
1662 static BOOL CDecodeMsg_DecodeSignedContent(CDecodeMsg *msg,
1663  const CRYPT_DER_BLOB *blob)
1664 {
1665     BOOL ret;
1666     CRYPT_SIGNED_INFO *signedInfo;
1667     DWORD size;
1668
1669     ret = CRYPT_AsnDecodeCMSSignedInfo(blob->pbData, blob->cbData,
1670      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_SIGNED_INFO *)&signedInfo,
1671      &size);
1672     if (ret)
1673         msg->u.signed_data.info = signedInfo;
1674     return ret;
1675 }
1676
1677 /* Decodes the content in blob as the type given, and updates the value
1678  * (type, parameters, etc.) of msg based on what blob contains.
1679  * It doesn't just use msg's type, to allow a recursive call from an implicitly
1680  * typed message once the outer content info has been decoded.
1681  */
1682 static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob,
1683  DWORD type)
1684 {
1685     BOOL ret;
1686
1687     switch (type)
1688     {
1689     case CMSG_DATA:
1690         if ((ret = CDecodeMsg_DecodeDataContent(msg, blob)))
1691             msg->type = CMSG_DATA;
1692         break;
1693     case CMSG_HASHED:
1694         if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
1695             msg->type = CMSG_HASHED;
1696         break;
1697     case CMSG_ENVELOPED:
1698         FIXME("unimplemented for type CMSG_ENVELOPED\n");
1699         ret = TRUE;
1700         break;
1701     case CMSG_SIGNED:
1702         if ((ret = CDecodeMsg_DecodeSignedContent(msg, blob)))
1703             msg->type = CMSG_SIGNED;
1704         break;
1705     default:
1706     {
1707         CRYPT_CONTENT_INFO *info;
1708         DWORD size;
1709
1710         ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
1711          msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,
1712          NULL, &info, &size);
1713         if (ret)
1714         {
1715             if (!strcmp(info->pszObjId, szOID_RSA_data))
1716                 ret = CDecodeMsg_DecodeContent(msg, &info->Content, CMSG_DATA);
1717             else if (!strcmp(info->pszObjId, szOID_RSA_digestedData))
1718                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1719                  CMSG_HASHED);
1720             else if (!strcmp(info->pszObjId, szOID_RSA_envelopedData))
1721                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1722                  CMSG_ENVELOPED);
1723             else if (!strcmp(info->pszObjId, szOID_RSA_signedData))
1724                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1725                  CMSG_SIGNED);
1726             else
1727             {
1728                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1729                 ret = FALSE;
1730             }
1731             LocalFree(info);
1732         }
1733     }
1734     }
1735     return ret;
1736 }
1737
1738 static BOOL CDecodeMsg_FinalizeHashedContent(CDecodeMsg *msg,
1739  CRYPT_DER_BLOB *blob)
1740 {
1741     CRYPT_ALGORITHM_IDENTIFIER *hashAlgoID = NULL;
1742     DWORD size = 0;
1743     ALG_ID algID = 0;
1744     BOOL ret;
1745
1746     CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, NULL, &size);
1747     hashAlgoID = CryptMemAlloc(size);
1748     ret = CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, hashAlgoID,
1749      &size);
1750     if (ret)
1751         algID = CertOIDToAlgId(hashAlgoID->pszObjId);
1752     ret = CryptCreateHash(msg->crypt_prov, algID, 0, 0, &msg->u.hash);
1753     if (ret)
1754     {
1755         CRYPT_DATA_BLOB content;
1756
1757         if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1758         {
1759             /* Unlike for non-detached messages, the data were never stored as
1760              * the content param, but were saved in msg->detached_data instead.
1761              */
1762             content.pbData = msg->detached_data.pbData;
1763             content.cbData = msg->detached_data.cbData;
1764         }
1765         else
1766             ret = ContextPropertyList_FindProperty(msg->properties,
1767              CMSG_CONTENT_PARAM, &content);
1768         if (ret)
1769             ret = CryptHashData(msg->u.hash, content.pbData, content.cbData, 0);
1770     }
1771     CryptMemFree(hashAlgoID);
1772     return ret;
1773 }
1774
1775 static BOOL CDecodeMsg_FinalizeSignedContent(CDecodeMsg *msg,
1776  CRYPT_DER_BLOB *blob)
1777 {
1778     BOOL ret;
1779     DWORD i, size;
1780
1781     ret = CSignedMsgData_AllocateHandles(&msg->u.signed_data);
1782     for (i = 0; ret && i < msg->u.signed_data.info->cSignerInfo; i++)
1783         ret = CSignedMsgData_ConstructSignerHandles(&msg->u.signed_data, i,
1784          msg->crypt_prov);
1785     if (ret)
1786     {
1787         CRYPT_DATA_BLOB *content;
1788
1789         /* Now that we have all the content, update the hash handles with
1790          * it.  If the message is a detached message, the content is stored
1791          * in msg->detached_data rather than in the signed message's
1792          * content.
1793          */
1794         if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1795             content = &msg->detached_data;
1796         else
1797             content = &msg->u.signed_data.info->content.Content;
1798         if (content->cbData)
1799         {
1800             /* If the message is not detached, have to decode the message's
1801              * content if the type is szOID_RSA_data.
1802              */
1803             if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) &&
1804              !strcmp(msg->u.signed_data.info->content.pszObjId,
1805              szOID_RSA_data))
1806             {
1807                 CRYPT_DATA_BLOB *blob;
1808
1809                 ret = CryptDecodeObjectEx(X509_ASN_ENCODING,
1810                  X509_OCTET_STRING, content->pbData, content->cbData,
1811                  CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
1812                 if (ret)
1813                 {
1814                     ret = CSignedMsgData_Update(&msg->u.signed_data,
1815                      blob->pbData, blob->cbData, TRUE, Verify);
1816                     LocalFree(blob);
1817                 }
1818             }
1819             else
1820                 ret = CSignedMsgData_Update(&msg->u.signed_data,
1821                  content->pbData, content->cbData, TRUE, Verify);
1822         }
1823     }
1824     return ret;
1825 }
1826
1827 static BOOL CDecodeMsg_FinalizeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob)
1828 {
1829     BOOL ret = FALSE;
1830
1831     switch (msg->type)
1832     {
1833     case CMSG_HASHED:
1834         ret = CDecodeMsg_FinalizeHashedContent(msg, blob);
1835         break;
1836     case CMSG_SIGNED:
1837         ret = CDecodeMsg_FinalizeSignedContent(msg, blob);
1838         break;
1839     default:
1840         ret = TRUE;
1841     }
1842     return ret;
1843 }
1844
1845 static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1846  DWORD cbData, BOOL fFinal)
1847 {
1848     CDecodeMsg *msg = hCryptMsg;
1849     BOOL ret = FALSE;
1850
1851     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
1852
1853     if (msg->base.state == MsgStateFinalized)
1854         SetLastError(CRYPT_E_MSG_ERROR);
1855     else if (msg->base.streamed)
1856     {
1857         FIXME("(%p, %p, %d, %d): streamed update stub\n", hCryptMsg, pbData,
1858          cbData, fFinal);
1859         switch (msg->base.state)
1860         {
1861         case MsgStateInit:
1862             ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1863             if (fFinal)
1864             {
1865                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1866                     msg->base.state = MsgStateDataFinalized;
1867                 else
1868                     msg->base.state = MsgStateFinalized;
1869             }
1870             else
1871                 msg->base.state = MsgStateUpdated;
1872             break;
1873         case MsgStateUpdated:
1874             ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1875             if (fFinal)
1876             {
1877                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1878                     msg->base.state = MsgStateDataFinalized;
1879                 else
1880                     msg->base.state = MsgStateFinalized;
1881             }
1882             break;
1883         case MsgStateDataFinalized:
1884             ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
1885             if (fFinal)
1886                 msg->base.state = MsgStateFinalized;
1887             break;
1888         default:
1889             SetLastError(CRYPT_E_MSG_ERROR);
1890             break;
1891         }
1892     }
1893     else
1894     {
1895         if (!fFinal)
1896             SetLastError(CRYPT_E_MSG_ERROR);
1897         else
1898         {
1899             switch (msg->base.state)
1900             {
1901             case MsgStateInit:
1902                 ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1903                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1904                     msg->base.state = MsgStateDataFinalized;
1905                 else
1906                     msg->base.state = MsgStateFinalized;
1907                 break;
1908             case MsgStateDataFinalized:
1909                 ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
1910                 msg->base.state = MsgStateFinalized;
1911                 break;
1912             default:
1913                 SetLastError(CRYPT_E_MSG_ERROR);
1914             }
1915         }
1916     }
1917     if (ret && fFinal &&
1918      ((msg->base.open_flags & CMSG_DETACHED_FLAG && msg->base.state ==
1919      MsgStateDataFinalized) ||
1920      (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->base.state ==
1921      MsgStateFinalized)))
1922         ret = CDecodeMsg_DecodeContent(msg, &msg->msg_data, msg->type);
1923     if (ret && msg->base.state == MsgStateFinalized)
1924         ret = CDecodeMsg_FinalizeContent(msg, &msg->msg_data);
1925     return ret;
1926 }
1927
1928 static BOOL CDecodeHashMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
1929  DWORD dwIndex, void *pvData, DWORD *pcbData)
1930 {
1931     BOOL ret = FALSE;
1932
1933     switch (dwParamType)
1934     {
1935     case CMSG_TYPE_PARAM:
1936         ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
1937         break;
1938     case CMSG_HASH_ALGORITHM_PARAM:
1939     {
1940         CRYPT_DATA_BLOB blob;
1941
1942         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
1943          &blob);
1944         if (ret)
1945         {
1946             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
1947             if (ret && pvData)
1948                 CRYPT_FixUpAlgorithmID(pvData);
1949         }
1950         else
1951             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1952         break;
1953     }
1954     case CMSG_COMPUTED_HASH_PARAM:
1955         ret = CryptGetHashParam(msg->u.hash, HP_HASHVAL, pvData, pcbData, 0);
1956         break;
1957     default:
1958     {
1959         CRYPT_DATA_BLOB blob;
1960
1961         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
1962          &blob);
1963         if (ret)
1964             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
1965         else
1966             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1967     }
1968     }
1969     return ret;
1970 }
1971
1972 /* nextData is an in/out parameter - on input it's the memory location in
1973  * which a copy of in's data should be made, and on output it's the memory
1974  * location immediately after out's copy of in's data.
1975  */
1976 static inline void CRYPT_CopyBlob(CRYPT_DATA_BLOB *out,
1977  const CRYPT_DATA_BLOB *in, LPBYTE *nextData)
1978 {
1979     out->cbData = in->cbData;
1980     if (in->cbData)
1981     {
1982         out->pbData = *nextData;
1983         memcpy(out->pbData, in->pbData, in->cbData);
1984         *nextData += in->cbData;
1985     }
1986 }
1987
1988 static inline void CRYPT_CopyAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
1989  const CRYPT_ALGORITHM_IDENTIFIER *in, LPBYTE *nextData)
1990 {
1991     if (in->pszObjId)
1992     {
1993         out->pszObjId = (LPSTR)*nextData;
1994         strcpy(out->pszObjId, in->pszObjId);
1995         *nextData += strlen(out->pszObjId) + 1;
1996     }
1997     CRYPT_CopyBlob(&out->Parameters, &in->Parameters, nextData);
1998 }
1999
2000 static inline void CRYPT_CopyAttributes(CRYPT_ATTRIBUTES *out,
2001  const CRYPT_ATTRIBUTES *in, LPBYTE *nextData)
2002 {
2003     out->cAttr = in->cAttr;
2004     if (in->cAttr)
2005     {
2006         DWORD i;
2007
2008         *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2009         out->rgAttr = (CRYPT_ATTRIBUTE *)*nextData;
2010         *nextData += in->cAttr * sizeof(CRYPT_ATTRIBUTE);
2011         for (i = 0; i < in->cAttr; i++)
2012         {
2013             if (in->rgAttr[i].pszObjId)
2014             {
2015                 out->rgAttr[i].pszObjId = (LPSTR)*nextData;
2016                 strcpy(out->rgAttr[i].pszObjId, in->rgAttr[i].pszObjId);
2017                 *nextData += strlen(in->rgAttr[i].pszObjId) + 1;
2018             }
2019             if (in->rgAttr[i].cValue)
2020             {
2021                 DWORD j;
2022
2023                 out->rgAttr[i].cValue = in->rgAttr[i].cValue;
2024                 *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2025                 out->rgAttr[i].rgValue = (PCRYPT_DATA_BLOB)*nextData;
2026                 *nextData += in->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2027                 for (j = 0; j < in->rgAttr[i].cValue; j++)
2028                     CRYPT_CopyBlob(&out->rgAttr[i].rgValue[j],
2029                      &in->rgAttr[i].rgValue[j], nextData);
2030             }
2031         }
2032     }
2033 }
2034
2035 static DWORD CRYPT_SizeOfAttributes(const CRYPT_ATTRIBUTES *attr)
2036 {
2037     DWORD size = attr->cAttr * sizeof(CRYPT_ATTRIBUTE), i, j;
2038
2039     for (i = 0; i < attr->cAttr; i++)
2040     {
2041         if (attr->rgAttr[i].pszObjId)
2042             size += strlen(attr->rgAttr[i].pszObjId) + 1;
2043         /* align pointer */
2044         size = ALIGN_DWORD_PTR(size);
2045         size += attr->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2046         for (j = 0; j < attr->rgAttr[i].cValue; j++)
2047             size += attr->rgAttr[i].rgValue[j].cbData;
2048     }
2049     /* align pointer again to be conservative */
2050     size = ALIGN_DWORD_PTR(size);
2051     return size;
2052 }
2053
2054 static DWORD CRYPT_SizeOfKeyIdAsIssuerAndSerial(const CRYPT_DATA_BLOB *keyId)
2055 {
2056     static char oid_key_rdn[] = szOID_KEYID_RDN;
2057     DWORD size = 0;
2058     CERT_RDN_ATTR attr;
2059     CERT_RDN rdn = { 1, &attr };
2060     CERT_NAME_INFO name = { 1, &rdn };
2061
2062     attr.pszObjId = oid_key_rdn;
2063     attr.dwValueType = CERT_RDN_OCTET_STRING;
2064     attr.Value.cbData = keyId->cbData;
2065     attr.Value.pbData = keyId->pbData;
2066     if (CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, NULL, &size))
2067         size++; /* Only include size of special zero serial number on success */
2068     return size;
2069 }
2070
2071 static BOOL CRYPT_CopyKeyIdAsIssuerAndSerial(CERT_NAME_BLOB *issuer,
2072  CRYPT_INTEGER_BLOB *serialNumber, const CRYPT_DATA_BLOB *keyId, DWORD encodedLen,
2073  LPBYTE *nextData)
2074 {
2075     static char oid_key_rdn[] = szOID_KEYID_RDN;
2076     CERT_RDN_ATTR attr;
2077     CERT_RDN rdn = { 1, &attr };
2078     CERT_NAME_INFO name = { 1, &rdn };
2079     BOOL ret;
2080
2081     /* Encode special zero serial number */
2082     serialNumber->cbData = 1;
2083     serialNumber->pbData = *nextData;
2084     **nextData = 0;
2085     (*nextData)++;
2086     /* Encode issuer */
2087     issuer->pbData = *nextData;
2088     attr.pszObjId = oid_key_rdn;
2089     attr.dwValueType = CERT_RDN_OCTET_STRING;
2090     attr.Value.cbData = keyId->cbData;
2091     attr.Value.pbData = keyId->pbData;
2092     ret = CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, *nextData,
2093      &encodedLen);
2094     if (ret)
2095     {
2096         *nextData += encodedLen;
2097         issuer->cbData = encodedLen;
2098     }
2099     return ret;
2100 }
2101
2102 static BOOL CRYPT_CopySignerInfo(void *pvData, DWORD *pcbData,
2103  const CMSG_CMS_SIGNER_INFO *in)
2104 {
2105     DWORD size = sizeof(CMSG_SIGNER_INFO), rdnSize = 0;
2106     BOOL ret;
2107
2108     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2109
2110     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2111     {
2112         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2113         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2114     }
2115     else
2116     {
2117         rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2118         size += rdnSize;
2119     }
2120     if (in->HashAlgorithm.pszObjId)
2121         size += strlen(in->HashAlgorithm.pszObjId) + 1;
2122     size += in->HashAlgorithm.Parameters.cbData;
2123     if (in->HashEncryptionAlgorithm.pszObjId)
2124         size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2125     size += in->HashEncryptionAlgorithm.Parameters.cbData;
2126     size += in->EncryptedHash.cbData;
2127     /* align pointer */
2128     size = ALIGN_DWORD_PTR(size);
2129     size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2130     size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2131     if (!pvData)
2132     {
2133         *pcbData = size;
2134         ret = TRUE;
2135     }
2136     else if (*pcbData < size)
2137     {
2138         *pcbData = size;
2139         SetLastError(ERROR_MORE_DATA);
2140         ret = FALSE;
2141     }
2142     else
2143     {
2144         LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_SIGNER_INFO);
2145         CMSG_SIGNER_INFO *out = pvData;
2146
2147         ret = TRUE;
2148         out->dwVersion = in->dwVersion;
2149         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2150         {
2151             CRYPT_CopyBlob(&out->Issuer,
2152              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2153             CRYPT_CopyBlob(&out->SerialNumber,
2154              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2155         }
2156         else
2157             ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2158              &in->SignerId.u.KeyId, rdnSize, &nextData);
2159         if (ret)
2160         {
2161             CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2162              &nextData);
2163             CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2164              &in->HashEncryptionAlgorithm, &nextData);
2165             CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2166             nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2167             CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2168             CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2169         }
2170     }
2171     TRACE("returning %d\n", ret);
2172     return ret;
2173 }
2174
2175 static BOOL CRYPT_CopyCMSSignerInfo(void *pvData, DWORD *pcbData,
2176  const CMSG_CMS_SIGNER_INFO *in)
2177 {
2178     DWORD size = sizeof(CMSG_CMS_SIGNER_INFO);
2179     BOOL ret;
2180
2181     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2182
2183     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2184     {
2185         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2186         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2187     }
2188     else
2189         size += in->SignerId.u.KeyId.cbData;
2190     if (in->HashAlgorithm.pszObjId)
2191         size += strlen(in->HashAlgorithm.pszObjId) + 1;
2192     size += in->HashAlgorithm.Parameters.cbData;
2193     if (in->HashEncryptionAlgorithm.pszObjId)
2194         size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2195     size += in->HashEncryptionAlgorithm.Parameters.cbData;
2196     size += in->EncryptedHash.cbData;
2197     /* align pointer */
2198     size = ALIGN_DWORD_PTR(size);
2199     size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2200     size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2201     if (!pvData)
2202     {
2203         *pcbData = size;
2204         ret = TRUE;
2205     }
2206     else if (*pcbData < size)
2207     {
2208         *pcbData = size;
2209         SetLastError(ERROR_MORE_DATA);
2210         ret = FALSE;
2211     }
2212     else
2213     {
2214         LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_CMS_SIGNER_INFO);
2215         CMSG_CMS_SIGNER_INFO *out = pvData;
2216
2217         out->dwVersion = in->dwVersion;
2218         out->SignerId.dwIdChoice = in->SignerId.dwIdChoice;
2219         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2220         {
2221             CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.Issuer,
2222              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2223             CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.SerialNumber,
2224              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2225         }
2226         else
2227             CRYPT_CopyBlob(&out->SignerId.u.KeyId, &in->SignerId.u.KeyId, &nextData);
2228         CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2229          &nextData);
2230         CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2231          &in->HashEncryptionAlgorithm, &nextData);
2232         CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2233         nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2234         CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2235         CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2236         ret = TRUE;
2237     }
2238     TRACE("returning %d\n", ret);
2239     return ret;
2240 }
2241
2242 static BOOL CRYPT_CopySignerCertInfo(void *pvData, DWORD *pcbData,
2243  const CMSG_CMS_SIGNER_INFO *in)
2244 {
2245     DWORD size = sizeof(CERT_INFO), rdnSize = 0;
2246     BOOL ret;
2247
2248     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2249
2250     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2251     {
2252         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2253         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2254     }
2255     else
2256     {
2257         rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2258         size += rdnSize;
2259     }
2260     if (!pvData)
2261     {
2262         *pcbData = size;
2263         ret = TRUE;
2264     }
2265     else if (*pcbData < size)
2266     {
2267         *pcbData = size;
2268         SetLastError(ERROR_MORE_DATA);
2269         ret = FALSE;
2270     }
2271     else
2272     {
2273         LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
2274         CERT_INFO *out = pvData;
2275
2276         memset(out, 0, sizeof(CERT_INFO));
2277         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2278         {
2279             CRYPT_CopyBlob(&out->Issuer,
2280              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2281             CRYPT_CopyBlob(&out->SerialNumber,
2282              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2283             ret = TRUE;
2284         }
2285         else
2286             ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2287              &in->SignerId.u.KeyId, rdnSize, &nextData);
2288     }
2289     TRACE("returning %d\n", ret);
2290     return ret;
2291 }
2292
2293 static BOOL CDecodeSignedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2294  DWORD dwIndex, void *pvData, DWORD *pcbData)
2295 {
2296     BOOL ret = FALSE;
2297
2298     switch (dwParamType)
2299     {
2300     case CMSG_TYPE_PARAM:
2301         ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2302         break;
2303     case CMSG_CONTENT_PARAM:
2304         if (msg->u.signed_data.info)
2305         {
2306             if (!strcmp(msg->u.signed_data.info->content.pszObjId,
2307              szOID_RSA_data))
2308             {
2309                 CRYPT_DATA_BLOB *blob;
2310                 DWORD size;
2311
2312                 ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
2313                  msg->u.signed_data.info->content.Content.pbData,
2314                  msg->u.signed_data.info->content.Content.cbData,
2315                  CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
2316                 if (ret)
2317                 {
2318                     ret = CRYPT_CopyParam(pvData, pcbData, blob->pbData,
2319                      blob->cbData);
2320                     LocalFree(blob);
2321                 }
2322             }
2323             else
2324                 ret = CRYPT_CopyParam(pvData, pcbData,
2325                  msg->u.signed_data.info->content.Content.pbData,
2326                  msg->u.signed_data.info->content.Content.cbData);
2327         }
2328         else
2329             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2330         break;
2331     case CMSG_INNER_CONTENT_TYPE_PARAM:
2332         if (msg->u.signed_data.info)
2333             ret = CRYPT_CopyParam(pvData, pcbData,
2334              msg->u.signed_data.info->content.pszObjId,
2335              strlen(msg->u.signed_data.info->content.pszObjId) + 1);
2336         else
2337             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2338         break;
2339     case CMSG_SIGNER_COUNT_PARAM:
2340         if (msg->u.signed_data.info)
2341             ret = CRYPT_CopyParam(pvData, pcbData,
2342              &msg->u.signed_data.info->cSignerInfo, sizeof(DWORD));
2343         else
2344             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2345         break;
2346     case CMSG_SIGNER_INFO_PARAM:
2347         if (msg->u.signed_data.info)
2348         {
2349             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2350                 SetLastError(CRYPT_E_INVALID_INDEX);
2351             else
2352                 ret = CRYPT_CopySignerInfo(pvData, pcbData,
2353                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2354         }
2355         else
2356             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2357         break;
2358     case CMSG_SIGNER_CERT_INFO_PARAM:
2359         if (msg->u.signed_data.info)
2360         {
2361             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2362                 SetLastError(CRYPT_E_INVALID_INDEX);
2363             else
2364                 ret = CRYPT_CopySignerCertInfo(pvData, pcbData,
2365                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2366         }
2367         else
2368             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2369         break;
2370     case CMSG_CERT_COUNT_PARAM:
2371         if (msg->u.signed_data.info)
2372             ret = CRYPT_CopyParam(pvData, pcbData,
2373              &msg->u.signed_data.info->cCertEncoded, sizeof(DWORD));
2374         else
2375             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2376         break;
2377     case CMSG_CERT_PARAM:
2378         if (msg->u.signed_data.info)
2379         {
2380             if (dwIndex >= msg->u.signed_data.info->cCertEncoded)
2381                 SetLastError(CRYPT_E_INVALID_INDEX);
2382             else
2383                 ret = CRYPT_CopyParam(pvData, pcbData,
2384                  msg->u.signed_data.info->rgCertEncoded[dwIndex].pbData,
2385                  msg->u.signed_data.info->rgCertEncoded[dwIndex].cbData);
2386         }
2387         else
2388             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2389         break;
2390     case CMSG_CRL_COUNT_PARAM:
2391         if (msg->u.signed_data.info)
2392             ret = CRYPT_CopyParam(pvData, pcbData,
2393              &msg->u.signed_data.info->cCrlEncoded, sizeof(DWORD));
2394         else
2395             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2396         break;
2397     case CMSG_CRL_PARAM:
2398         if (msg->u.signed_data.info)
2399         {
2400             if (dwIndex >= msg->u.signed_data.info->cCrlEncoded)
2401                 SetLastError(CRYPT_E_INVALID_INDEX);
2402             else
2403                 ret = CRYPT_CopyParam(pvData, pcbData,
2404                  msg->u.signed_data.info->rgCrlEncoded[dwIndex].pbData,
2405                  msg->u.signed_data.info->rgCrlEncoded[dwIndex].cbData);
2406         }
2407         else
2408             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2409         break;
2410     case CMSG_COMPUTED_HASH_PARAM:
2411         if (msg->u.signed_data.info)
2412         {
2413             if (dwIndex >= msg->u.signed_data.cSignerHandle)
2414                 SetLastError(CRYPT_E_INVALID_INDEX);
2415             else
2416                 ret = CryptGetHashParam(
2417                  msg->u.signed_data.signerHandles[dwIndex].contentHash,
2418                  HP_HASHVAL, pvData, pcbData, 0);
2419         }
2420         else
2421             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2422         break;
2423     case CMSG_ENCODED_SIGNER:
2424         if (msg->u.signed_data.info)
2425         {
2426             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2427                 SetLastError(CRYPT_E_INVALID_INDEX);
2428             else
2429                 ret = CryptEncodeObjectEx(
2430                  X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, CMS_SIGNER_INFO,
2431                  &msg->u.signed_data.info->rgSignerInfo[dwIndex], 0, NULL,
2432                  pvData, pcbData);
2433         }
2434         else
2435             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2436         break;
2437     case CMSG_ATTR_CERT_COUNT_PARAM:
2438         if (msg->u.signed_data.info)
2439         {
2440             DWORD attrCertCount = 0;
2441
2442             ret = CRYPT_CopyParam(pvData, pcbData,
2443              &attrCertCount, sizeof(DWORD));
2444         }
2445         else
2446             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2447         break;
2448     case CMSG_ATTR_CERT_PARAM:
2449         if (msg->u.signed_data.info)
2450             SetLastError(CRYPT_E_INVALID_INDEX);
2451         else
2452             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2453         break;
2454     case CMSG_CMS_SIGNER_INFO_PARAM:
2455         if (msg->u.signed_data.info)
2456         {
2457             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2458                 SetLastError(CRYPT_E_INVALID_INDEX);
2459             else
2460                 ret = CRYPT_CopyCMSSignerInfo(pvData, pcbData,
2461                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2462         }
2463         else
2464             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2465         break;
2466     default:
2467         FIXME("unimplemented for %d\n", dwParamType);
2468         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2469     }
2470     return ret;
2471 }
2472
2473 static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
2474  DWORD dwIndex, void *pvData, DWORD *pcbData)
2475 {
2476     CDecodeMsg *msg = hCryptMsg;
2477     BOOL ret = FALSE;
2478
2479     switch (msg->type)
2480     {
2481     case CMSG_HASHED:
2482         ret = CDecodeHashMsg_GetParam(msg, dwParamType, dwIndex, pvData,
2483          pcbData);
2484         break;
2485     case CMSG_SIGNED:
2486         ret = CDecodeSignedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
2487          pcbData);
2488         break;
2489     default:
2490         switch (dwParamType)
2491         {
2492         case CMSG_TYPE_PARAM:
2493             ret = CRYPT_CopyParam(pvData, pcbData, &msg->type,
2494              sizeof(msg->type));
2495             break;
2496         default:
2497         {
2498             CRYPT_DATA_BLOB blob;
2499
2500             ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2501              &blob);
2502             if (ret)
2503                 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData,
2504                  blob.cbData);
2505             else
2506                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2507         }
2508         }
2509     }
2510     return ret;
2511 }
2512
2513 static BOOL CDecodeHashMsg_VerifyHash(CDecodeMsg *msg)
2514 {
2515     BOOL ret;
2516     CRYPT_DATA_BLOB hashBlob;
2517
2518     ret = ContextPropertyList_FindProperty(msg->properties,
2519      CMSG_HASH_DATA_PARAM, &hashBlob);
2520     if (ret)
2521     {
2522         DWORD computedHashSize = 0;
2523
2524         ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0, NULL,
2525          &computedHashSize);
2526         if (hashBlob.cbData == computedHashSize)
2527         {
2528             LPBYTE computedHash = CryptMemAlloc(computedHashSize);
2529
2530             if (computedHash)
2531             {
2532                 ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0,
2533                  computedHash, &computedHashSize);
2534                 if (ret)
2535                 {
2536                     if (memcmp(hashBlob.pbData, computedHash, hashBlob.cbData))
2537                     {
2538                         SetLastError(CRYPT_E_HASH_VALUE);
2539                         ret = FALSE;
2540                     }
2541                 }
2542                 CryptMemFree(computedHash);
2543             }
2544             else
2545             {
2546                 SetLastError(ERROR_OUTOFMEMORY);
2547                 ret = FALSE;
2548             }
2549         }
2550         else
2551         {
2552             SetLastError(CRYPT_E_HASH_VALUE);
2553             ret = FALSE;
2554         }
2555     }
2556     return ret;
2557 }
2558
2559 static BOOL CDecodeSignedMsg_VerifySignatureWithKey(CDecodeMsg *msg,
2560  HCRYPTPROV prov, DWORD signerIndex, PCERT_PUBLIC_KEY_INFO keyInfo)
2561 {
2562     HCRYPTKEY key;
2563     BOOL ret;
2564
2565     if (!prov)
2566         prov = msg->crypt_prov;
2567     ret = CryptImportPublicKeyInfo(prov, X509_ASN_ENCODING, keyInfo, &key);
2568     if (ret)
2569     {
2570         HCRYPTHASH hash;
2571         CRYPT_HASH_BLOB reversedHash;
2572
2573         if (msg->u.signed_data.info->rgSignerInfo[signerIndex].AuthAttrs.cAttr)
2574             hash = msg->u.signed_data.signerHandles[signerIndex].authAttrHash;
2575         else
2576             hash = msg->u.signed_data.signerHandles[signerIndex].contentHash;
2577         ret = CRYPT_ConstructBlob(&reversedHash,
2578          &msg->u.signed_data.info->rgSignerInfo[signerIndex].EncryptedHash);
2579         if (ret)
2580         {
2581             CRYPT_ReverseBytes(&reversedHash);
2582             ret = CryptVerifySignatureW(hash, reversedHash.pbData,
2583              reversedHash.cbData, key, NULL, 0);
2584             CryptMemFree(reversedHash.pbData);
2585         }
2586         CryptDestroyKey(key);
2587     }
2588     return ret;
2589 }
2590
2591 static BOOL CDecodeSignedMsg_VerifySignature(CDecodeMsg *msg, PCERT_INFO info)
2592 {
2593     BOOL ret = FALSE;
2594     DWORD i;
2595
2596     if (!msg->u.signed_data.signerHandles)
2597     {
2598         SetLastError(NTE_BAD_SIGNATURE);
2599         return FALSE;
2600     }
2601     for (i = 0; !ret && i < msg->u.signed_data.info->cSignerInfo; i++)
2602     {
2603         PCMSG_CMS_SIGNER_INFO signerInfo =
2604          &msg->u.signed_data.info->rgSignerInfo[i];
2605
2606         if (signerInfo->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2607         {
2608             ret = CertCompareCertificateName(X509_ASN_ENCODING,
2609              &signerInfo->SignerId.u.IssuerSerialNumber.Issuer,
2610              &info->Issuer);
2611             if (ret)
2612             {
2613                 ret = CertCompareIntegerBlob(
2614                  &signerInfo->SignerId.u.IssuerSerialNumber.SerialNumber,
2615                  &info->SerialNumber);
2616                 if (ret)
2617                     break;
2618             }
2619         }
2620         else
2621         {
2622             FIXME("signer %d: unimplemented for key id\n", i);
2623         }
2624     }
2625     if (ret)
2626         ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, 0, i,
2627          &info->SubjectPublicKeyInfo);
2628     else
2629         SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2630
2631     return ret;
2632 }
2633
2634 static BOOL CDecodeSignedMsg_VerifySignatureEx(CDecodeMsg *msg,
2635  PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA para)
2636 {
2637     BOOL ret = FALSE;
2638
2639     if (para->cbSize != sizeof(CMSG_CTRL_VERIFY_SIGNATURE_EX_PARA))
2640         SetLastError(ERROR_INVALID_PARAMETER);
2641     else if (para->dwSignerIndex >= msg->u.signed_data.info->cSignerInfo)
2642         SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2643     else if (!msg->u.signed_data.signerHandles)
2644         SetLastError(NTE_BAD_SIGNATURE);
2645     else
2646     {
2647         switch (para->dwSignerType)
2648         {
2649         case CMSG_VERIFY_SIGNER_PUBKEY:
2650             ret = CDecodeSignedMsg_VerifySignatureWithKey(msg,
2651              para->hCryptProv, para->dwSignerIndex, para->pvSigner);
2652             break;
2653         case CMSG_VERIFY_SIGNER_CERT:
2654         {
2655             PCCERT_CONTEXT cert = para->pvSigner;
2656
2657             ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, para->hCryptProv,
2658              para->dwSignerIndex, &cert->pCertInfo->SubjectPublicKeyInfo);
2659             break;
2660         }
2661         default:
2662             FIXME("unimplemented for signer type %d\n", para->dwSignerType);
2663             SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2664         }
2665     }
2666     return ret;
2667 }
2668
2669 static BOOL CDecodeMsg_Control(HCRYPTMSG hCryptMsg, DWORD dwFlags,
2670  DWORD dwCtrlType, const void *pvCtrlPara)
2671 {
2672     CDecodeMsg *msg = hCryptMsg;
2673     BOOL ret = FALSE;
2674
2675     switch (dwCtrlType)
2676     {
2677     case CMSG_CTRL_VERIFY_SIGNATURE:
2678         switch (msg->type)
2679         {
2680         case CMSG_SIGNED:
2681             ret = CDecodeSignedMsg_VerifySignature(msg, (PCERT_INFO)pvCtrlPara);
2682             break;
2683         default:
2684             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2685         }
2686         break;
2687     case CMSG_CTRL_DECRYPT:
2688         switch (msg->type)
2689         {
2690         default:
2691             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2692         }
2693         break;
2694     case CMSG_CTRL_VERIFY_HASH:
2695         switch (msg->type)
2696         {
2697         case CMSG_HASHED:
2698             ret = CDecodeHashMsg_VerifyHash(msg);
2699             break;
2700         default:
2701             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2702         }
2703         break;
2704     case CMSG_CTRL_VERIFY_SIGNATURE_EX:
2705         switch (msg->type)
2706         {
2707         case CMSG_SIGNED:
2708             ret = CDecodeSignedMsg_VerifySignatureEx(msg,
2709              (PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA)pvCtrlPara);
2710             break;
2711         default:
2712             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2713         }
2714         break;
2715     default:
2716         SetLastError(CRYPT_E_CONTROL_TYPE);
2717     }
2718     return ret;
2719 }
2720
2721 HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
2722  DWORD dwMsgType, HCRYPTPROV_LEGACY hCryptProv, PCERT_INFO pRecipientInfo,
2723  PCMSG_STREAM_INFO pStreamInfo)
2724 {
2725     CDecodeMsg *msg;
2726
2727     TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
2728      dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
2729
2730     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
2731     {
2732         SetLastError(E_INVALIDARG);
2733         return NULL;
2734     }
2735     msg = CryptMemAlloc(sizeof(CDecodeMsg));
2736     if (msg)
2737     {
2738         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
2739          CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update,
2740          CDecodeMsg_Control);
2741         msg->type = dwMsgType;
2742         if (hCryptProv)
2743             msg->crypt_prov = hCryptProv;
2744         else
2745         {
2746             msg->crypt_prov = CRYPT_GetDefaultProvider();
2747             msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
2748         }
2749         memset(&msg->u, 0, sizeof(msg->u));
2750         msg->msg_data.cbData = 0;
2751         msg->msg_data.pbData = NULL;
2752         msg->detached_data.cbData = 0;
2753         msg->detached_data.pbData = NULL;
2754         msg->properties = ContextPropertyList_Create();
2755     }
2756     return msg;
2757 }
2758
2759 HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
2760 {
2761     TRACE("(%p)\n", hCryptMsg);
2762
2763     if (hCryptMsg)
2764     {
2765         CryptMsgBase *msg = hCryptMsg;
2766
2767         InterlockedIncrement(&msg->ref);
2768     }
2769     return hCryptMsg;
2770 }
2771
2772 BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
2773 {
2774     TRACE("(%p)\n", hCryptMsg);
2775
2776     if (hCryptMsg)
2777     {
2778         CryptMsgBase *msg = hCryptMsg;
2779
2780         if (InterlockedDecrement(&msg->ref) == 0)
2781         {
2782             TRACE("freeing %p\n", msg);
2783             if (msg->close)
2784                 msg->close(msg);
2785             CryptMemFree(msg);
2786         }
2787     }
2788     return TRUE;
2789 }
2790
2791 BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
2792  DWORD cbData, BOOL fFinal)
2793 {
2794     CryptMsgBase *msg = hCryptMsg;
2795
2796     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
2797
2798     return msg->update(hCryptMsg, pbData, cbData, fFinal);
2799 }
2800
2801 BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
2802  DWORD dwIndex, void *pvData, DWORD *pcbData)
2803 {
2804     CryptMsgBase *msg = hCryptMsg;
2805
2806     TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
2807      pvData, pcbData);
2808     return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
2809 }
2810
2811 BOOL WINAPI CryptMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
2812  DWORD dwCtrlType, const void *pvCtrlPara)
2813 {
2814     CryptMsgBase *msg = hCryptMsg;
2815
2816     TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType,
2817      pvCtrlPara);
2818     return msg->control(hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
2819 }
2820
2821 static CERT_INFO *CRYPT_GetSignerCertInfoFromMsg(HCRYPTMSG msg,
2822  DWORD dwSignerIndex)
2823 {
2824     CERT_INFO *certInfo = NULL;
2825     DWORD size;
2826
2827     if (CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM, dwSignerIndex, NULL,
2828      &size))
2829     {
2830         certInfo = CryptMemAlloc(size);
2831         if (certInfo)
2832         {
2833             if (!CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM,
2834              dwSignerIndex, certInfo, &size))
2835             {
2836                 CryptMemFree(certInfo);
2837                 certInfo = NULL;
2838             }
2839         }
2840     }
2841     return certInfo;
2842 }
2843
2844 BOOL WINAPI CryptMsgGetAndVerifySigner(HCRYPTMSG hCryptMsg, DWORD cSignerStore,
2845  HCERTSTORE *rghSignerStore, DWORD dwFlags, PCCERT_CONTEXT *ppSigner,
2846  DWORD *pdwSignerIndex)
2847 {
2848     HCERTSTORE store;
2849     DWORD i, signerIndex = 0;
2850     PCCERT_CONTEXT signerCert = NULL;
2851     BOOL ret = FALSE;
2852
2853     TRACE("(%p, %d, %p, %08x, %p, %p)\n", hCryptMsg, cSignerStore,
2854      rghSignerStore, dwFlags, ppSigner, pdwSignerIndex);
2855
2856     /* Clear output parameters */
2857     if (ppSigner)
2858         *ppSigner = NULL;
2859     if (pdwSignerIndex && !(dwFlags & CMSG_USE_SIGNER_INDEX_FLAG))
2860         *pdwSignerIndex = 0;
2861
2862     /* Create store to search for signer certificates */
2863     store = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0,
2864      CERT_STORE_CREATE_NEW_FLAG, NULL);
2865     if (!(dwFlags & CMSG_TRUSTED_SIGNER_FLAG))
2866     {
2867         HCERTSTORE msgStore = CertOpenStore(CERT_STORE_PROV_MSG, 0, 0, 0,
2868          hCryptMsg);
2869
2870         CertAddStoreToCollection(store, msgStore, 0, 0);
2871         CertCloseStore(msgStore, 0);
2872     }
2873     for (i = 0; i < cSignerStore; i++)
2874         CertAddStoreToCollection(store, rghSignerStore[i], 0, 0);
2875
2876     /* Find signer cert */
2877     if (dwFlags & CMSG_USE_SIGNER_INDEX_FLAG)
2878     {
2879         CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
2880          *pdwSignerIndex);
2881
2882         if (signer)
2883         {
2884             signerIndex = *pdwSignerIndex;
2885             signerCert = CertFindCertificateInStore(store, X509_ASN_ENCODING,
2886              0, CERT_FIND_SUBJECT_CERT, signer, NULL);
2887             CryptMemFree(signer);
2888         }
2889     }
2890     else
2891     {
2892         DWORD count, size = sizeof(count);
2893
2894         if (CryptMsgGetParam(hCryptMsg, CMSG_SIGNER_COUNT_PARAM, 0, &count,
2895          &size))
2896         {
2897             for (i = 0; !signerCert && i < count; i++)
2898             {
2899                 CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
2900                  i);
2901
2902                 if (signer)
2903                 {
2904                     signerCert = CertFindCertificateInStore(store,
2905                      X509_ASN_ENCODING, 0, CERT_FIND_SUBJECT_CERT, signer,
2906                      NULL);
2907                     if (signerCert)
2908                         signerIndex = i;
2909                     CryptMemFree(signer);
2910                 }
2911             }
2912         }
2913         if (!signerCert)
2914             SetLastError(CRYPT_E_NO_TRUSTED_SIGNER);
2915     }
2916     if (signerCert)
2917     {
2918         if (!(dwFlags & CMSG_SIGNER_ONLY_FLAG))
2919             ret = CryptMsgControl(hCryptMsg, 0, CMSG_CTRL_VERIFY_SIGNATURE,
2920              signerCert->pCertInfo);
2921         else
2922             ret = TRUE;
2923         if (ret)
2924         {
2925             if (ppSigner)
2926                 *ppSigner = CertDuplicateCertificateContext(signerCert);
2927             if (pdwSignerIndex)
2928                 *pdwSignerIndex = signerIndex;
2929         }
2930         CertFreeCertificateContext(signerCert);
2931     }
2932
2933     CertCloseStore(store, 0);
2934     return ret;
2935 }
2936
2937 BOOL WINAPI CryptMsgVerifyCountersignatureEncodedEx(HCRYPTPROV_LEGACY hCryptProv,
2938  DWORD dwEncodingType, PBYTE pbSignerInfo, DWORD cbSignerInfo,
2939  PBYTE pbSignerInfoCountersignature, DWORD cbSignerInfoCountersignature,
2940  DWORD dwSignerType, void *pvSigner, DWORD dwFlags, void *pvReserved)
2941 {
2942     FIXME("(%08lx, %08x, %p, %d, %p, %d, %d, %p, %08x, %p): stub\n", hCryptProv,
2943      dwEncodingType, pbSignerInfo, cbSignerInfo, pbSignerInfoCountersignature,
2944      cbSignerInfoCountersignature, dwSignerType, pvSigner, dwFlags, pvReserved);
2945     return FALSE;
2946 }
2947
2948 BOOL WINAPI CryptMsgEncodeAndSignCTL(DWORD dwMsgEncodingType,
2949  PCTL_INFO pCtlInfo, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
2950  BYTE *pbEncoded, DWORD *pcbEncoded)
2951 {
2952     BOOL ret;
2953     BYTE *pbCtlContent;
2954     DWORD cbCtlContent;
2955
2956     TRACE("(%08x, %p, %p, %08x, %p, %p)\n", dwMsgEncodingType, pCtlInfo,
2957      pSignInfo, dwFlags, pbEncoded, pcbEncoded);
2958
2959     if (dwFlags)
2960     {
2961         FIXME("unimplemented for flags %08x\n", dwFlags);
2962         return FALSE;
2963     }
2964     if ((ret = CryptEncodeObjectEx(dwMsgEncodingType, PKCS_CTL, pCtlInfo,
2965      CRYPT_ENCODE_ALLOC_FLAG, NULL, &pbCtlContent, &cbCtlContent)))
2966     {
2967         ret = CryptMsgSignCTL(dwMsgEncodingType, pbCtlContent, cbCtlContent,
2968          pSignInfo, dwFlags, pbEncoded, pcbEncoded);
2969         LocalFree(pbCtlContent);
2970     }
2971     return ret;
2972 }
2973
2974 BOOL WINAPI CryptMsgSignCTL(DWORD dwMsgEncodingType, BYTE *pbCtlContent,
2975  DWORD cbCtlContent, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
2976  BYTE *pbEncoded, DWORD *pcbEncoded)
2977 {
2978     static char oid_ctl[] = szOID_CTL;
2979     BOOL ret;
2980     HCRYPTMSG msg;
2981
2982     TRACE("(%08x, %p, %d, %p, %08x, %p, %p)\n", dwMsgEncodingType,
2983      pbCtlContent, cbCtlContent, pSignInfo, dwFlags, pbEncoded, pcbEncoded);
2984
2985     if (dwFlags)
2986     {
2987         FIXME("unimplemented for flags %08x\n", dwFlags);
2988         return FALSE;
2989     }
2990     msg = CryptMsgOpenToEncode(dwMsgEncodingType, 0, CMSG_SIGNED, pSignInfo,
2991      oid_ctl, NULL);
2992     if (msg)
2993     {
2994         ret = CryptMsgUpdate(msg, pbCtlContent, cbCtlContent, TRUE);
2995         if (ret)
2996             ret = CryptMsgGetParam(msg, CMSG_CONTENT_PARAM, 0, pbEncoded,
2997              pcbEncoded);
2998         CryptMsgClose(msg);
2999     }
3000     else
3001         ret = FALSE;
3002     return ret;
3003 }