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 typedef struct _CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS
1465 {
1466     DWORD                       cbSize;
1467     HCRYPTPROV_LEGACY           hCryptProv;
1468     CRYPT_ALGORITHM_IDENTIFIER  ContentEncryptionAlgorithm;
1469     void                       *pvEncryptionAuxInfo;
1470     DWORD                       cRecipients;
1471     PCERT_INFO                 *rgpRecipientCert;
1472     PCMSG_RECIPIENT_ENCODE_INFO rgCmsRecipients;
1473     DWORD                       cCertEncoded;
1474     PCERT_BLOB                  rgCertEncoded;
1475     DWORD                       cCrlEncoded;
1476     PCRL_BLOB                   rgCrlEncoded;
1477     DWORD                       cAttrCertEncoded;
1478     PCERT_BLOB                  rgAttrCertEncoded;
1479     DWORD                       cUnprotectedAttr;
1480     PCRYPT_ATTRIBUTE            rgUnprotectedAttr;
1481 } CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS, *PCMSG_ENVELOPED_ENCODE_INFO_WITH_CMS;
1482
1483 typedef struct _CEnvelopedEncodeMsg
1484 {
1485     CryptMsgBase                   base;
1486     HCRYPTPROV                     prov;
1487 } CEnvelopedEncodeMsg;
1488
1489 static void CEnvelopedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
1490 {
1491     CEnvelopedEncodeMsg *msg = hCryptMsg;
1492
1493     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1494         CryptReleaseContext(msg->prov, 0);
1495 }
1496
1497 static BOOL CEnvelopedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1498  DWORD dwIndex, void *pvData, DWORD *pcbData)
1499 {
1500     FIXME("(%p, %d, %d, %p, %p): stub\n", hCryptMsg, dwParamType, dwIndex,
1501      pvData, pcbData);
1502     return FALSE;
1503 }
1504
1505 static BOOL CEnvelopedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1506  DWORD cbData, BOOL fFinal)
1507 {
1508     FIXME("(%p, %p, %d, %d): stub\n", hCryptMsg, pbData, cbData, fFinal);
1509     return FALSE;
1510 }
1511
1512 static HCRYPTMSG CEnvelopedEncodeMsg_Open(DWORD dwFlags,
1513  const void *pvMsgEncodeInfo, LPCSTR pszInnerContentObjID,
1514  PCMSG_STREAM_INFO pStreamInfo)
1515 {
1516     CEnvelopedEncodeMsg *msg;
1517     const CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS *info = pvMsgEncodeInfo;
1518     HCRYPTPROV prov;
1519     ALG_ID algID;
1520
1521     if (info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO) &&
1522      info->cbSize != sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
1523     {
1524         SetLastError(E_INVALIDARG);
1525         return NULL;
1526     }
1527     if (info->cbSize == sizeof(CMSG_ENVELOPED_ENCODE_INFO_WITH_CMS))
1528         FIXME("CMS fields unsupported\n");
1529     if (!(algID = CertOIDToAlgId(info->ContentEncryptionAlgorithm.pszObjId)))
1530     {
1531         SetLastError(CRYPT_E_UNKNOWN_ALGO);
1532         return NULL;
1533     }
1534     if (info->cRecipients && !info->rgpRecipientCert)
1535     {
1536         SetLastError(E_INVALIDARG);
1537         return NULL;
1538     }
1539     if (info->hCryptProv)
1540         prov = info->hCryptProv;
1541     else
1542     {
1543         prov = CRYPT_GetDefaultProvider();
1544         dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
1545     }
1546     msg = CryptMemAlloc(sizeof(CEnvelopedEncodeMsg));
1547     if (msg)
1548     {
1549         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1550          CEnvelopedEncodeMsg_Close, CEnvelopedEncodeMsg_GetParam,
1551          CEnvelopedEncodeMsg_Update, CRYPT_DefaultMsgControl);
1552         msg->prov = prov;
1553     }
1554     if (!msg && (dwFlags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
1555         CryptReleaseContext(prov, 0);
1556     return msg;
1557 }
1558
1559 HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
1560  DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
1561  PCMSG_STREAM_INFO pStreamInfo)
1562 {
1563     HCRYPTMSG msg = NULL;
1564
1565     TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
1566      dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
1567
1568     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
1569     {
1570         SetLastError(E_INVALIDARG);
1571         return NULL;
1572     }
1573     switch (dwMsgType)
1574     {
1575     case CMSG_DATA:
1576         msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1577          pszInnerContentObjID, pStreamInfo);
1578         break;
1579     case CMSG_HASHED:
1580         msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1581          pszInnerContentObjID, pStreamInfo);
1582         break;
1583     case CMSG_SIGNED:
1584         msg = CSignedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1585          pszInnerContentObjID, pStreamInfo);
1586         break;
1587     case CMSG_ENVELOPED:
1588         msg = CEnvelopedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1589          pszInnerContentObjID, pStreamInfo);
1590         break;
1591     case CMSG_SIGNED_AND_ENVELOPED:
1592     case CMSG_ENCRYPTED:
1593         /* defined but invalid, fall through */
1594     default:
1595         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1596     }
1597     return msg;
1598 }
1599
1600 typedef struct _CDecodeMsg
1601 {
1602     CryptMsgBase           base;
1603     DWORD                  type;
1604     HCRYPTPROV             crypt_prov;
1605     union {
1606         HCRYPTHASH     hash;
1607         CSignedMsgData signed_data;
1608     } u;
1609     CRYPT_DATA_BLOB        msg_data;
1610     CRYPT_DATA_BLOB        detached_data;
1611     PCONTEXT_PROPERTY_LIST properties;
1612 } CDecodeMsg;
1613
1614 static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
1615 {
1616     CDecodeMsg *msg = hCryptMsg;
1617
1618     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1619         CryptReleaseContext(msg->crypt_prov, 0);
1620     switch (msg->type)
1621     {
1622     case CMSG_HASHED:
1623         if (msg->u.hash)
1624             CryptDestroyHash(msg->u.hash);
1625         break;
1626     case CMSG_SIGNED:
1627         if (msg->u.signed_data.info)
1628         {
1629             LocalFree(msg->u.signed_data.info);
1630             CSignedMsgData_CloseHandles(&msg->u.signed_data);
1631         }
1632         break;
1633     }
1634     CryptMemFree(msg->msg_data.pbData);
1635     CryptMemFree(msg->detached_data.pbData);
1636     ContextPropertyList_Free(msg->properties);
1637 }
1638
1639 static BOOL CDecodeMsg_CopyData(CRYPT_DATA_BLOB *blob, const BYTE *pbData,
1640  DWORD cbData)
1641 {
1642     BOOL ret = TRUE;
1643
1644     if (cbData)
1645     {
1646         if (blob->cbData)
1647             blob->pbData = CryptMemRealloc(blob->pbData,
1648              blob->cbData + cbData);
1649         else
1650             blob->pbData = CryptMemAlloc(cbData);
1651         if (blob->pbData)
1652         {
1653             memcpy(blob->pbData + blob->cbData, pbData, cbData);
1654             blob->cbData += cbData;
1655         }
1656         else
1657             ret = FALSE;
1658     }
1659     return ret;
1660 }
1661
1662 static BOOL CDecodeMsg_DecodeDataContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob)
1663 {
1664     BOOL ret;
1665     CRYPT_DATA_BLOB *data;
1666     DWORD size;
1667
1668     ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
1669      blob->pbData, blob->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, &data, &size);
1670     if (ret)
1671     {
1672         ret = ContextPropertyList_SetProperty(msg->properties,
1673          CMSG_CONTENT_PARAM, data->pbData, data->cbData);
1674         LocalFree(data);
1675     }
1676     return ret;
1677 }
1678
1679 static void CDecodeMsg_SaveAlgorithmID(CDecodeMsg *msg, DWORD param,
1680  const CRYPT_ALGORITHM_IDENTIFIER *id)
1681 {
1682     static const BYTE nullParams[] = { ASN_NULL, 0 };
1683     CRYPT_ALGORITHM_IDENTIFIER *copy;
1684     DWORD len = sizeof(CRYPT_ALGORITHM_IDENTIFIER);
1685
1686     /* Linearize algorithm id */
1687     len += strlen(id->pszObjId) + 1;
1688     len += id->Parameters.cbData;
1689     copy = CryptMemAlloc(len);
1690     if (copy)
1691     {
1692         copy->pszObjId =
1693          (LPSTR)((BYTE *)copy + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1694         strcpy(copy->pszObjId, id->pszObjId);
1695         copy->Parameters.pbData = (BYTE *)copy->pszObjId + strlen(id->pszObjId)
1696          + 1;
1697         /* Trick:  omit NULL parameters */
1698         if (id->Parameters.cbData == sizeof(nullParams) &&
1699          !memcmp(id->Parameters.pbData, nullParams, sizeof(nullParams)))
1700         {
1701             copy->Parameters.cbData = 0;
1702             len -= sizeof(nullParams);
1703         }
1704         else
1705             copy->Parameters.cbData = id->Parameters.cbData;
1706         if (copy->Parameters.cbData)
1707             memcpy(copy->Parameters.pbData, id->Parameters.pbData,
1708              id->Parameters.cbData);
1709         ContextPropertyList_SetProperty(msg->properties, param, (BYTE *)copy,
1710          len);
1711         CryptMemFree(copy);
1712     }
1713 }
1714
1715 static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
1716 {
1717     id->pszObjId = (LPSTR)((BYTE *)id + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1718     id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
1719 }
1720
1721 static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
1722  const CRYPT_DER_BLOB *blob)
1723 {
1724     BOOL ret;
1725     CRYPT_DIGESTED_DATA *digestedData;
1726     DWORD size;
1727
1728     ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
1729      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
1730      &size);
1731     if (ret)
1732     {
1733         ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
1734          (const BYTE *)&digestedData->version, sizeof(digestedData->version));
1735         CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
1736          &digestedData->DigestAlgorithm);
1737         ContextPropertyList_SetProperty(msg->properties,
1738          CMSG_INNER_CONTENT_TYPE_PARAM,
1739          (const BYTE *)digestedData->ContentInfo.pszObjId,
1740          digestedData->ContentInfo.pszObjId ?
1741          strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
1742         if (!(msg->base.open_flags & CMSG_DETACHED_FLAG))
1743         {
1744             if (digestedData->ContentInfo.Content.cbData)
1745                 CDecodeMsg_DecodeDataContent(msg,
1746                  &digestedData->ContentInfo.Content);
1747             else
1748                 ContextPropertyList_SetProperty(msg->properties,
1749                  CMSG_CONTENT_PARAM, NULL, 0);
1750         }
1751         ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
1752          digestedData->hash.pbData, digestedData->hash.cbData);
1753         LocalFree(digestedData);
1754     }
1755     return ret;
1756 }
1757
1758 static BOOL CDecodeMsg_DecodeSignedContent(CDecodeMsg *msg,
1759  const CRYPT_DER_BLOB *blob)
1760 {
1761     BOOL ret;
1762     CRYPT_SIGNED_INFO *signedInfo;
1763     DWORD size;
1764
1765     ret = CRYPT_AsnDecodeCMSSignedInfo(blob->pbData, blob->cbData,
1766      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_SIGNED_INFO *)&signedInfo,
1767      &size);
1768     if (ret)
1769         msg->u.signed_data.info = signedInfo;
1770     return ret;
1771 }
1772
1773 /* Decodes the content in blob as the type given, and updates the value
1774  * (type, parameters, etc.) of msg based on what blob contains.
1775  * It doesn't just use msg's type, to allow a recursive call from an implicitly
1776  * typed message once the outer content info has been decoded.
1777  */
1778 static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, const CRYPT_DER_BLOB *blob,
1779  DWORD type)
1780 {
1781     BOOL ret;
1782
1783     switch (type)
1784     {
1785     case CMSG_DATA:
1786         if ((ret = CDecodeMsg_DecodeDataContent(msg, blob)))
1787             msg->type = CMSG_DATA;
1788         break;
1789     case CMSG_HASHED:
1790         if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
1791             msg->type = CMSG_HASHED;
1792         break;
1793     case CMSG_ENVELOPED:
1794         FIXME("unimplemented for type CMSG_ENVELOPED\n");
1795         ret = TRUE;
1796         break;
1797     case CMSG_SIGNED:
1798         if ((ret = CDecodeMsg_DecodeSignedContent(msg, blob)))
1799             msg->type = CMSG_SIGNED;
1800         break;
1801     default:
1802     {
1803         CRYPT_CONTENT_INFO *info;
1804         DWORD size;
1805
1806         ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
1807          msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,
1808          NULL, &info, &size);
1809         if (ret)
1810         {
1811             if (!strcmp(info->pszObjId, szOID_RSA_data))
1812                 ret = CDecodeMsg_DecodeContent(msg, &info->Content, CMSG_DATA);
1813             else if (!strcmp(info->pszObjId, szOID_RSA_digestedData))
1814                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1815                  CMSG_HASHED);
1816             else if (!strcmp(info->pszObjId, szOID_RSA_envelopedData))
1817                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1818                  CMSG_ENVELOPED);
1819             else if (!strcmp(info->pszObjId, szOID_RSA_signedData))
1820                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1821                  CMSG_SIGNED);
1822             else
1823             {
1824                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1825                 ret = FALSE;
1826             }
1827             LocalFree(info);
1828         }
1829     }
1830     }
1831     return ret;
1832 }
1833
1834 static BOOL CDecodeMsg_FinalizeHashedContent(CDecodeMsg *msg,
1835  CRYPT_DER_BLOB *blob)
1836 {
1837     CRYPT_ALGORITHM_IDENTIFIER *hashAlgoID = NULL;
1838     DWORD size = 0;
1839     ALG_ID algID = 0;
1840     BOOL ret;
1841
1842     CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, NULL, &size);
1843     hashAlgoID = CryptMemAlloc(size);
1844     ret = CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, hashAlgoID,
1845      &size);
1846     if (ret)
1847         algID = CertOIDToAlgId(hashAlgoID->pszObjId);
1848     ret = CryptCreateHash(msg->crypt_prov, algID, 0, 0, &msg->u.hash);
1849     if (ret)
1850     {
1851         CRYPT_DATA_BLOB content;
1852
1853         if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1854         {
1855             /* Unlike for non-detached messages, the data were never stored as
1856              * the content param, but were saved in msg->detached_data instead.
1857              */
1858             content.pbData = msg->detached_data.pbData;
1859             content.cbData = msg->detached_data.cbData;
1860         }
1861         else
1862             ret = ContextPropertyList_FindProperty(msg->properties,
1863              CMSG_CONTENT_PARAM, &content);
1864         if (ret)
1865             ret = CryptHashData(msg->u.hash, content.pbData, content.cbData, 0);
1866     }
1867     CryptMemFree(hashAlgoID);
1868     return ret;
1869 }
1870
1871 static BOOL CDecodeMsg_FinalizeSignedContent(CDecodeMsg *msg,
1872  CRYPT_DER_BLOB *blob)
1873 {
1874     BOOL ret;
1875     DWORD i, size;
1876
1877     ret = CSignedMsgData_AllocateHandles(&msg->u.signed_data);
1878     for (i = 0; ret && i < msg->u.signed_data.info->cSignerInfo; i++)
1879         ret = CSignedMsgData_ConstructSignerHandles(&msg->u.signed_data, i,
1880          msg->crypt_prov);
1881     if (ret)
1882     {
1883         CRYPT_DATA_BLOB *content;
1884
1885         /* Now that we have all the content, update the hash handles with
1886          * it.  If the message is a detached message, the content is stored
1887          * in msg->detached_data rather than in the signed message's
1888          * content.
1889          */
1890         if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1891             content = &msg->detached_data;
1892         else
1893             content = &msg->u.signed_data.info->content.Content;
1894         if (content->cbData)
1895         {
1896             /* If the message is not detached, have to decode the message's
1897              * content if the type is szOID_RSA_data.
1898              */
1899             if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) &&
1900              !strcmp(msg->u.signed_data.info->content.pszObjId,
1901              szOID_RSA_data))
1902             {
1903                 CRYPT_DATA_BLOB *blob;
1904
1905                 ret = CryptDecodeObjectEx(X509_ASN_ENCODING,
1906                  X509_OCTET_STRING, content->pbData, content->cbData,
1907                  CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
1908                 if (ret)
1909                 {
1910                     ret = CSignedMsgData_Update(&msg->u.signed_data,
1911                      blob->pbData, blob->cbData, TRUE, Verify);
1912                     LocalFree(blob);
1913                 }
1914             }
1915             else
1916                 ret = CSignedMsgData_Update(&msg->u.signed_data,
1917                  content->pbData, content->cbData, TRUE, Verify);
1918         }
1919     }
1920     return ret;
1921 }
1922
1923 static BOOL CDecodeMsg_FinalizeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob)
1924 {
1925     BOOL ret = FALSE;
1926
1927     switch (msg->type)
1928     {
1929     case CMSG_HASHED:
1930         ret = CDecodeMsg_FinalizeHashedContent(msg, blob);
1931         break;
1932     case CMSG_SIGNED:
1933         ret = CDecodeMsg_FinalizeSignedContent(msg, blob);
1934         break;
1935     default:
1936         ret = TRUE;
1937     }
1938     return ret;
1939 }
1940
1941 static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1942  DWORD cbData, BOOL fFinal)
1943 {
1944     CDecodeMsg *msg = hCryptMsg;
1945     BOOL ret = FALSE;
1946
1947     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
1948
1949     if (msg->base.state == MsgStateFinalized)
1950         SetLastError(CRYPT_E_MSG_ERROR);
1951     else if (msg->base.streamed)
1952     {
1953         FIXME("(%p, %p, %d, %d): streamed update stub\n", hCryptMsg, pbData,
1954          cbData, fFinal);
1955         switch (msg->base.state)
1956         {
1957         case MsgStateInit:
1958             ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1959             if (fFinal)
1960             {
1961                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1962                     msg->base.state = MsgStateDataFinalized;
1963                 else
1964                     msg->base.state = MsgStateFinalized;
1965             }
1966             else
1967                 msg->base.state = MsgStateUpdated;
1968             break;
1969         case MsgStateUpdated:
1970             ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1971             if (fFinal)
1972             {
1973                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
1974                     msg->base.state = MsgStateDataFinalized;
1975                 else
1976                     msg->base.state = MsgStateFinalized;
1977             }
1978             break;
1979         case MsgStateDataFinalized:
1980             ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
1981             if (fFinal)
1982                 msg->base.state = MsgStateFinalized;
1983             break;
1984         default:
1985             SetLastError(CRYPT_E_MSG_ERROR);
1986             break;
1987         }
1988     }
1989     else
1990     {
1991         if (!fFinal)
1992             SetLastError(CRYPT_E_MSG_ERROR);
1993         else
1994         {
1995             switch (msg->base.state)
1996             {
1997             case MsgStateInit:
1998                 ret = CDecodeMsg_CopyData(&msg->msg_data, pbData, cbData);
1999                 if (msg->base.open_flags & CMSG_DETACHED_FLAG)
2000                     msg->base.state = MsgStateDataFinalized;
2001                 else
2002                     msg->base.state = MsgStateFinalized;
2003                 break;
2004             case MsgStateDataFinalized:
2005                 ret = CDecodeMsg_CopyData(&msg->detached_data, pbData, cbData);
2006                 msg->base.state = MsgStateFinalized;
2007                 break;
2008             default:
2009                 SetLastError(CRYPT_E_MSG_ERROR);
2010             }
2011         }
2012     }
2013     if (ret && fFinal &&
2014      ((msg->base.open_flags & CMSG_DETACHED_FLAG && msg->base.state ==
2015      MsgStateDataFinalized) ||
2016      (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->base.state ==
2017      MsgStateFinalized)))
2018         ret = CDecodeMsg_DecodeContent(msg, &msg->msg_data, msg->type);
2019     if (ret && msg->base.state == MsgStateFinalized)
2020         ret = CDecodeMsg_FinalizeContent(msg, &msg->msg_data);
2021     return ret;
2022 }
2023
2024 static BOOL CDecodeHashMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2025  DWORD dwIndex, void *pvData, DWORD *pcbData)
2026 {
2027     BOOL ret = FALSE;
2028
2029     switch (dwParamType)
2030     {
2031     case CMSG_TYPE_PARAM:
2032         ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2033         break;
2034     case CMSG_HASH_ALGORITHM_PARAM:
2035     {
2036         CRYPT_DATA_BLOB blob;
2037
2038         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2039          &blob);
2040         if (ret)
2041         {
2042             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
2043             if (ret && pvData)
2044                 CRYPT_FixUpAlgorithmID(pvData);
2045         }
2046         else
2047             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2048         break;
2049     }
2050     case CMSG_COMPUTED_HASH_PARAM:
2051         ret = CryptGetHashParam(msg->u.hash, HP_HASHVAL, pvData, pcbData, 0);
2052         break;
2053     default:
2054     {
2055         CRYPT_DATA_BLOB blob;
2056
2057         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2058          &blob);
2059         if (ret)
2060             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
2061         else
2062             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2063     }
2064     }
2065     return ret;
2066 }
2067
2068 /* nextData is an in/out parameter - on input it's the memory location in
2069  * which a copy of in's data should be made, and on output it's the memory
2070  * location immediately after out's copy of in's data.
2071  */
2072 static inline void CRYPT_CopyBlob(CRYPT_DATA_BLOB *out,
2073  const CRYPT_DATA_BLOB *in, LPBYTE *nextData)
2074 {
2075     out->cbData = in->cbData;
2076     if (in->cbData)
2077     {
2078         out->pbData = *nextData;
2079         memcpy(out->pbData, in->pbData, in->cbData);
2080         *nextData += in->cbData;
2081     }
2082 }
2083
2084 static inline void CRYPT_CopyAlgorithmId(CRYPT_ALGORITHM_IDENTIFIER *out,
2085  const CRYPT_ALGORITHM_IDENTIFIER *in, LPBYTE *nextData)
2086 {
2087     if (in->pszObjId)
2088     {
2089         out->pszObjId = (LPSTR)*nextData;
2090         strcpy(out->pszObjId, in->pszObjId);
2091         *nextData += strlen(out->pszObjId) + 1;
2092     }
2093     CRYPT_CopyBlob(&out->Parameters, &in->Parameters, nextData);
2094 }
2095
2096 static inline void CRYPT_CopyAttributes(CRYPT_ATTRIBUTES *out,
2097  const CRYPT_ATTRIBUTES *in, LPBYTE *nextData)
2098 {
2099     out->cAttr = in->cAttr;
2100     if (in->cAttr)
2101     {
2102         DWORD i;
2103
2104         *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2105         out->rgAttr = (CRYPT_ATTRIBUTE *)*nextData;
2106         *nextData += in->cAttr * sizeof(CRYPT_ATTRIBUTE);
2107         for (i = 0; i < in->cAttr; i++)
2108         {
2109             if (in->rgAttr[i].pszObjId)
2110             {
2111                 out->rgAttr[i].pszObjId = (LPSTR)*nextData;
2112                 strcpy(out->rgAttr[i].pszObjId, in->rgAttr[i].pszObjId);
2113                 *nextData += strlen(in->rgAttr[i].pszObjId) + 1;
2114             }
2115             if (in->rgAttr[i].cValue)
2116             {
2117                 DWORD j;
2118
2119                 out->rgAttr[i].cValue = in->rgAttr[i].cValue;
2120                 *nextData = POINTER_ALIGN_DWORD_PTR(*nextData);
2121                 out->rgAttr[i].rgValue = (PCRYPT_DATA_BLOB)*nextData;
2122                 *nextData += in->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2123                 for (j = 0; j < in->rgAttr[i].cValue; j++)
2124                     CRYPT_CopyBlob(&out->rgAttr[i].rgValue[j],
2125                      &in->rgAttr[i].rgValue[j], nextData);
2126             }
2127         }
2128     }
2129 }
2130
2131 static DWORD CRYPT_SizeOfAttributes(const CRYPT_ATTRIBUTES *attr)
2132 {
2133     DWORD size = attr->cAttr * sizeof(CRYPT_ATTRIBUTE), i, j;
2134
2135     for (i = 0; i < attr->cAttr; i++)
2136     {
2137         if (attr->rgAttr[i].pszObjId)
2138             size += strlen(attr->rgAttr[i].pszObjId) + 1;
2139         /* align pointer */
2140         size = ALIGN_DWORD_PTR(size);
2141         size += attr->rgAttr[i].cValue * sizeof(CRYPT_DATA_BLOB);
2142         for (j = 0; j < attr->rgAttr[i].cValue; j++)
2143             size += attr->rgAttr[i].rgValue[j].cbData;
2144     }
2145     /* align pointer again to be conservative */
2146     size = ALIGN_DWORD_PTR(size);
2147     return size;
2148 }
2149
2150 static DWORD CRYPT_SizeOfKeyIdAsIssuerAndSerial(const CRYPT_DATA_BLOB *keyId)
2151 {
2152     static char oid_key_rdn[] = szOID_KEYID_RDN;
2153     DWORD size = 0;
2154     CERT_RDN_ATTR attr;
2155     CERT_RDN rdn = { 1, &attr };
2156     CERT_NAME_INFO name = { 1, &rdn };
2157
2158     attr.pszObjId = oid_key_rdn;
2159     attr.dwValueType = CERT_RDN_OCTET_STRING;
2160     attr.Value.cbData = keyId->cbData;
2161     attr.Value.pbData = keyId->pbData;
2162     if (CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, NULL, &size))
2163         size++; /* Only include size of special zero serial number on success */
2164     return size;
2165 }
2166
2167 static BOOL CRYPT_CopyKeyIdAsIssuerAndSerial(CERT_NAME_BLOB *issuer,
2168  CRYPT_INTEGER_BLOB *serialNumber, const CRYPT_DATA_BLOB *keyId, DWORD encodedLen,
2169  LPBYTE *nextData)
2170 {
2171     static char oid_key_rdn[] = szOID_KEYID_RDN;
2172     CERT_RDN_ATTR attr;
2173     CERT_RDN rdn = { 1, &attr };
2174     CERT_NAME_INFO name = { 1, &rdn };
2175     BOOL ret;
2176
2177     /* Encode special zero serial number */
2178     serialNumber->cbData = 1;
2179     serialNumber->pbData = *nextData;
2180     **nextData = 0;
2181     (*nextData)++;
2182     /* Encode issuer */
2183     issuer->pbData = *nextData;
2184     attr.pszObjId = oid_key_rdn;
2185     attr.dwValueType = CERT_RDN_OCTET_STRING;
2186     attr.Value.cbData = keyId->cbData;
2187     attr.Value.pbData = keyId->pbData;
2188     ret = CryptEncodeObject(X509_ASN_ENCODING, X509_NAME, &name, *nextData,
2189      &encodedLen);
2190     if (ret)
2191     {
2192         *nextData += encodedLen;
2193         issuer->cbData = encodedLen;
2194     }
2195     return ret;
2196 }
2197
2198 static BOOL CRYPT_CopySignerInfo(void *pvData, DWORD *pcbData,
2199  const CMSG_CMS_SIGNER_INFO *in)
2200 {
2201     DWORD size = sizeof(CMSG_SIGNER_INFO), rdnSize = 0;
2202     BOOL ret;
2203
2204     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2205
2206     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2207     {
2208         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2209         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2210     }
2211     else
2212     {
2213         rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2214         size += rdnSize;
2215     }
2216     if (in->HashAlgorithm.pszObjId)
2217         size += strlen(in->HashAlgorithm.pszObjId) + 1;
2218     size += in->HashAlgorithm.Parameters.cbData;
2219     if (in->HashEncryptionAlgorithm.pszObjId)
2220         size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2221     size += in->HashEncryptionAlgorithm.Parameters.cbData;
2222     size += in->EncryptedHash.cbData;
2223     /* align pointer */
2224     size = ALIGN_DWORD_PTR(size);
2225     size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2226     size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2227     if (!pvData)
2228     {
2229         *pcbData = size;
2230         ret = TRUE;
2231     }
2232     else if (*pcbData < size)
2233     {
2234         *pcbData = size;
2235         SetLastError(ERROR_MORE_DATA);
2236         ret = FALSE;
2237     }
2238     else
2239     {
2240         LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_SIGNER_INFO);
2241         CMSG_SIGNER_INFO *out = pvData;
2242
2243         ret = TRUE;
2244         out->dwVersion = in->dwVersion;
2245         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2246         {
2247             CRYPT_CopyBlob(&out->Issuer,
2248              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2249             CRYPT_CopyBlob(&out->SerialNumber,
2250              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2251         }
2252         else
2253             ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2254              &in->SignerId.u.KeyId, rdnSize, &nextData);
2255         if (ret)
2256         {
2257             CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2258              &nextData);
2259             CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2260              &in->HashEncryptionAlgorithm, &nextData);
2261             CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2262             nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2263             CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2264             CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2265         }
2266     }
2267     TRACE("returning %d\n", ret);
2268     return ret;
2269 }
2270
2271 static BOOL CRYPT_CopyCMSSignerInfo(void *pvData, DWORD *pcbData,
2272  const CMSG_CMS_SIGNER_INFO *in)
2273 {
2274     DWORD size = sizeof(CMSG_CMS_SIGNER_INFO);
2275     BOOL ret;
2276
2277     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2278
2279     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2280     {
2281         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2282         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2283     }
2284     else
2285         size += in->SignerId.u.KeyId.cbData;
2286     if (in->HashAlgorithm.pszObjId)
2287         size += strlen(in->HashAlgorithm.pszObjId) + 1;
2288     size += in->HashAlgorithm.Parameters.cbData;
2289     if (in->HashEncryptionAlgorithm.pszObjId)
2290         size += strlen(in->HashEncryptionAlgorithm.pszObjId) + 1;
2291     size += in->HashEncryptionAlgorithm.Parameters.cbData;
2292     size += in->EncryptedHash.cbData;
2293     /* align pointer */
2294     size = ALIGN_DWORD_PTR(size);
2295     size += CRYPT_SizeOfAttributes(&in->AuthAttrs);
2296     size += CRYPT_SizeOfAttributes(&in->UnauthAttrs);
2297     if (!pvData)
2298     {
2299         *pcbData = size;
2300         ret = TRUE;
2301     }
2302     else if (*pcbData < size)
2303     {
2304         *pcbData = size;
2305         SetLastError(ERROR_MORE_DATA);
2306         ret = FALSE;
2307     }
2308     else
2309     {
2310         LPBYTE nextData = (BYTE *)pvData + sizeof(CMSG_CMS_SIGNER_INFO);
2311         CMSG_CMS_SIGNER_INFO *out = pvData;
2312
2313         out->dwVersion = in->dwVersion;
2314         out->SignerId.dwIdChoice = in->SignerId.dwIdChoice;
2315         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2316         {
2317             CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.Issuer,
2318              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2319             CRYPT_CopyBlob(&out->SignerId.u.IssuerSerialNumber.SerialNumber,
2320              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2321         }
2322         else
2323             CRYPT_CopyBlob(&out->SignerId.u.KeyId, &in->SignerId.u.KeyId, &nextData);
2324         CRYPT_CopyAlgorithmId(&out->HashAlgorithm, &in->HashAlgorithm,
2325          &nextData);
2326         CRYPT_CopyAlgorithmId(&out->HashEncryptionAlgorithm,
2327          &in->HashEncryptionAlgorithm, &nextData);
2328         CRYPT_CopyBlob(&out->EncryptedHash, &in->EncryptedHash, &nextData);
2329         nextData = POINTER_ALIGN_DWORD_PTR(nextData);
2330         CRYPT_CopyAttributes(&out->AuthAttrs, &in->AuthAttrs, &nextData);
2331         CRYPT_CopyAttributes(&out->UnauthAttrs, &in->UnauthAttrs, &nextData);
2332         ret = TRUE;
2333     }
2334     TRACE("returning %d\n", ret);
2335     return ret;
2336 }
2337
2338 static BOOL CRYPT_CopySignerCertInfo(void *pvData, DWORD *pcbData,
2339  const CMSG_CMS_SIGNER_INFO *in)
2340 {
2341     DWORD size = sizeof(CERT_INFO), rdnSize = 0;
2342     BOOL ret;
2343
2344     TRACE("(%p, %d, %p)\n", pvData, pvData ? *pcbData : 0, in);
2345
2346     if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2347     {
2348         size += in->SignerId.u.IssuerSerialNumber.Issuer.cbData;
2349         size += in->SignerId.u.IssuerSerialNumber.SerialNumber.cbData;
2350     }
2351     else
2352     {
2353         rdnSize = CRYPT_SizeOfKeyIdAsIssuerAndSerial(&in->SignerId.u.KeyId);
2354         size += rdnSize;
2355     }
2356     if (!pvData)
2357     {
2358         *pcbData = size;
2359         ret = TRUE;
2360     }
2361     else if (*pcbData < size)
2362     {
2363         *pcbData = size;
2364         SetLastError(ERROR_MORE_DATA);
2365         ret = FALSE;
2366     }
2367     else
2368     {
2369         LPBYTE nextData = (BYTE *)pvData + sizeof(CERT_INFO);
2370         CERT_INFO *out = pvData;
2371
2372         memset(out, 0, sizeof(CERT_INFO));
2373         if (in->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2374         {
2375             CRYPT_CopyBlob(&out->Issuer,
2376              &in->SignerId.u.IssuerSerialNumber.Issuer, &nextData);
2377             CRYPT_CopyBlob(&out->SerialNumber,
2378              &in->SignerId.u.IssuerSerialNumber.SerialNumber, &nextData);
2379             ret = TRUE;
2380         }
2381         else
2382             ret = CRYPT_CopyKeyIdAsIssuerAndSerial(&out->Issuer, &out->SerialNumber,
2383              &in->SignerId.u.KeyId, rdnSize, &nextData);
2384     }
2385     TRACE("returning %d\n", ret);
2386     return ret;
2387 }
2388
2389 static BOOL CDecodeSignedMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
2390  DWORD dwIndex, void *pvData, DWORD *pcbData)
2391 {
2392     BOOL ret = FALSE;
2393
2394     switch (dwParamType)
2395     {
2396     case CMSG_TYPE_PARAM:
2397         ret = CRYPT_CopyParam(pvData, pcbData, &msg->type, sizeof(msg->type));
2398         break;
2399     case CMSG_CONTENT_PARAM:
2400         if (msg->u.signed_data.info)
2401         {
2402             if (!strcmp(msg->u.signed_data.info->content.pszObjId,
2403              szOID_RSA_data))
2404             {
2405                 CRYPT_DATA_BLOB *blob;
2406                 DWORD size;
2407
2408                 ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
2409                  msg->u.signed_data.info->content.Content.pbData,
2410                  msg->u.signed_data.info->content.Content.cbData,
2411                  CRYPT_DECODE_ALLOC_FLAG, NULL, &blob, &size);
2412                 if (ret)
2413                 {
2414                     ret = CRYPT_CopyParam(pvData, pcbData, blob->pbData,
2415                      blob->cbData);
2416                     LocalFree(blob);
2417                 }
2418             }
2419             else
2420                 ret = CRYPT_CopyParam(pvData, pcbData,
2421                  msg->u.signed_data.info->content.Content.pbData,
2422                  msg->u.signed_data.info->content.Content.cbData);
2423         }
2424         else
2425             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2426         break;
2427     case CMSG_INNER_CONTENT_TYPE_PARAM:
2428         if (msg->u.signed_data.info)
2429             ret = CRYPT_CopyParam(pvData, pcbData,
2430              msg->u.signed_data.info->content.pszObjId,
2431              strlen(msg->u.signed_data.info->content.pszObjId) + 1);
2432         else
2433             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2434         break;
2435     case CMSG_SIGNER_COUNT_PARAM:
2436         if (msg->u.signed_data.info)
2437             ret = CRYPT_CopyParam(pvData, pcbData,
2438              &msg->u.signed_data.info->cSignerInfo, sizeof(DWORD));
2439         else
2440             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2441         break;
2442     case CMSG_SIGNER_INFO_PARAM:
2443         if (msg->u.signed_data.info)
2444         {
2445             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2446                 SetLastError(CRYPT_E_INVALID_INDEX);
2447             else
2448                 ret = CRYPT_CopySignerInfo(pvData, pcbData,
2449                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2450         }
2451         else
2452             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2453         break;
2454     case CMSG_SIGNER_CERT_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_CopySignerCertInfo(pvData, pcbData,
2461                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2462         }
2463         else
2464             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2465         break;
2466     case CMSG_CERT_COUNT_PARAM:
2467         if (msg->u.signed_data.info)
2468             ret = CRYPT_CopyParam(pvData, pcbData,
2469              &msg->u.signed_data.info->cCertEncoded, sizeof(DWORD));
2470         else
2471             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2472         break;
2473     case CMSG_CERT_PARAM:
2474         if (msg->u.signed_data.info)
2475         {
2476             if (dwIndex >= msg->u.signed_data.info->cCertEncoded)
2477                 SetLastError(CRYPT_E_INVALID_INDEX);
2478             else
2479                 ret = CRYPT_CopyParam(pvData, pcbData,
2480                  msg->u.signed_data.info->rgCertEncoded[dwIndex].pbData,
2481                  msg->u.signed_data.info->rgCertEncoded[dwIndex].cbData);
2482         }
2483         else
2484             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2485         break;
2486     case CMSG_CRL_COUNT_PARAM:
2487         if (msg->u.signed_data.info)
2488             ret = CRYPT_CopyParam(pvData, pcbData,
2489              &msg->u.signed_data.info->cCrlEncoded, sizeof(DWORD));
2490         else
2491             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2492         break;
2493     case CMSG_CRL_PARAM:
2494         if (msg->u.signed_data.info)
2495         {
2496             if (dwIndex >= msg->u.signed_data.info->cCrlEncoded)
2497                 SetLastError(CRYPT_E_INVALID_INDEX);
2498             else
2499                 ret = CRYPT_CopyParam(pvData, pcbData,
2500                  msg->u.signed_data.info->rgCrlEncoded[dwIndex].pbData,
2501                  msg->u.signed_data.info->rgCrlEncoded[dwIndex].cbData);
2502         }
2503         else
2504             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2505         break;
2506     case CMSG_COMPUTED_HASH_PARAM:
2507         if (msg->u.signed_data.info)
2508         {
2509             if (dwIndex >= msg->u.signed_data.cSignerHandle)
2510                 SetLastError(CRYPT_E_INVALID_INDEX);
2511             else
2512                 ret = CryptGetHashParam(
2513                  msg->u.signed_data.signerHandles[dwIndex].contentHash,
2514                  HP_HASHVAL, pvData, pcbData, 0);
2515         }
2516         else
2517             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2518         break;
2519     case CMSG_ENCODED_SIGNER:
2520         if (msg->u.signed_data.info)
2521         {
2522             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2523                 SetLastError(CRYPT_E_INVALID_INDEX);
2524             else
2525                 ret = CryptEncodeObjectEx(
2526                  X509_ASN_ENCODING | PKCS_7_ASN_ENCODING, CMS_SIGNER_INFO,
2527                  &msg->u.signed_data.info->rgSignerInfo[dwIndex], 0, NULL,
2528                  pvData, pcbData);
2529         }
2530         else
2531             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2532         break;
2533     case CMSG_ATTR_CERT_COUNT_PARAM:
2534         if (msg->u.signed_data.info)
2535         {
2536             DWORD attrCertCount = 0;
2537
2538             ret = CRYPT_CopyParam(pvData, pcbData,
2539              &attrCertCount, sizeof(DWORD));
2540         }
2541         else
2542             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2543         break;
2544     case CMSG_ATTR_CERT_PARAM:
2545         if (msg->u.signed_data.info)
2546             SetLastError(CRYPT_E_INVALID_INDEX);
2547         else
2548             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2549         break;
2550     case CMSG_CMS_SIGNER_INFO_PARAM:
2551         if (msg->u.signed_data.info)
2552         {
2553             if (dwIndex >= msg->u.signed_data.info->cSignerInfo)
2554                 SetLastError(CRYPT_E_INVALID_INDEX);
2555             else
2556                 ret = CRYPT_CopyCMSSignerInfo(pvData, pcbData,
2557                  &msg->u.signed_data.info->rgSignerInfo[dwIndex]);
2558         }
2559         else
2560             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2561         break;
2562     default:
2563         FIXME("unimplemented for %d\n", dwParamType);
2564         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2565     }
2566     return ret;
2567 }
2568
2569 static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
2570  DWORD dwIndex, void *pvData, DWORD *pcbData)
2571 {
2572     CDecodeMsg *msg = hCryptMsg;
2573     BOOL ret = FALSE;
2574
2575     switch (msg->type)
2576     {
2577     case CMSG_HASHED:
2578         ret = CDecodeHashMsg_GetParam(msg, dwParamType, dwIndex, pvData,
2579          pcbData);
2580         break;
2581     case CMSG_SIGNED:
2582         ret = CDecodeSignedMsg_GetParam(msg, dwParamType, dwIndex, pvData,
2583          pcbData);
2584         break;
2585     default:
2586         switch (dwParamType)
2587         {
2588         case CMSG_TYPE_PARAM:
2589             ret = CRYPT_CopyParam(pvData, pcbData, &msg->type,
2590              sizeof(msg->type));
2591             break;
2592         default:
2593         {
2594             CRYPT_DATA_BLOB blob;
2595
2596             ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
2597              &blob);
2598             if (ret)
2599                 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData,
2600                  blob.cbData);
2601             else
2602                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2603         }
2604         }
2605     }
2606     return ret;
2607 }
2608
2609 static BOOL CDecodeHashMsg_VerifyHash(CDecodeMsg *msg)
2610 {
2611     BOOL ret;
2612     CRYPT_DATA_BLOB hashBlob;
2613
2614     ret = ContextPropertyList_FindProperty(msg->properties,
2615      CMSG_HASH_DATA_PARAM, &hashBlob);
2616     if (ret)
2617     {
2618         DWORD computedHashSize = 0;
2619
2620         ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0, NULL,
2621          &computedHashSize);
2622         if (hashBlob.cbData == computedHashSize)
2623         {
2624             LPBYTE computedHash = CryptMemAlloc(computedHashSize);
2625
2626             if (computedHash)
2627             {
2628                 ret = CDecodeHashMsg_GetParam(msg, CMSG_COMPUTED_HASH_PARAM, 0,
2629                  computedHash, &computedHashSize);
2630                 if (ret)
2631                 {
2632                     if (memcmp(hashBlob.pbData, computedHash, hashBlob.cbData))
2633                     {
2634                         SetLastError(CRYPT_E_HASH_VALUE);
2635                         ret = FALSE;
2636                     }
2637                 }
2638                 CryptMemFree(computedHash);
2639             }
2640             else
2641             {
2642                 SetLastError(ERROR_OUTOFMEMORY);
2643                 ret = FALSE;
2644             }
2645         }
2646         else
2647         {
2648             SetLastError(CRYPT_E_HASH_VALUE);
2649             ret = FALSE;
2650         }
2651     }
2652     return ret;
2653 }
2654
2655 static BOOL CDecodeSignedMsg_VerifySignatureWithKey(CDecodeMsg *msg,
2656  HCRYPTPROV prov, DWORD signerIndex, PCERT_PUBLIC_KEY_INFO keyInfo)
2657 {
2658     HCRYPTKEY key;
2659     BOOL ret;
2660
2661     if (!prov)
2662         prov = msg->crypt_prov;
2663     ret = CryptImportPublicKeyInfo(prov, X509_ASN_ENCODING, keyInfo, &key);
2664     if (ret)
2665     {
2666         HCRYPTHASH hash;
2667         CRYPT_HASH_BLOB reversedHash;
2668
2669         if (msg->u.signed_data.info->rgSignerInfo[signerIndex].AuthAttrs.cAttr)
2670             hash = msg->u.signed_data.signerHandles[signerIndex].authAttrHash;
2671         else
2672             hash = msg->u.signed_data.signerHandles[signerIndex].contentHash;
2673         ret = CRYPT_ConstructBlob(&reversedHash,
2674          &msg->u.signed_data.info->rgSignerInfo[signerIndex].EncryptedHash);
2675         if (ret)
2676         {
2677             CRYPT_ReverseBytes(&reversedHash);
2678             ret = CryptVerifySignatureW(hash, reversedHash.pbData,
2679              reversedHash.cbData, key, NULL, 0);
2680             CryptMemFree(reversedHash.pbData);
2681         }
2682         CryptDestroyKey(key);
2683     }
2684     return ret;
2685 }
2686
2687 static BOOL CDecodeSignedMsg_VerifySignature(CDecodeMsg *msg, PCERT_INFO info)
2688 {
2689     BOOL ret = FALSE;
2690     DWORD i;
2691
2692     if (!msg->u.signed_data.signerHandles)
2693     {
2694         SetLastError(NTE_BAD_SIGNATURE);
2695         return FALSE;
2696     }
2697     for (i = 0; !ret && i < msg->u.signed_data.info->cSignerInfo; i++)
2698     {
2699         PCMSG_CMS_SIGNER_INFO signerInfo =
2700          &msg->u.signed_data.info->rgSignerInfo[i];
2701
2702         if (signerInfo->SignerId.dwIdChoice == CERT_ID_ISSUER_SERIAL_NUMBER)
2703         {
2704             ret = CertCompareCertificateName(X509_ASN_ENCODING,
2705              &signerInfo->SignerId.u.IssuerSerialNumber.Issuer,
2706              &info->Issuer);
2707             if (ret)
2708             {
2709                 ret = CertCompareIntegerBlob(
2710                  &signerInfo->SignerId.u.IssuerSerialNumber.SerialNumber,
2711                  &info->SerialNumber);
2712                 if (ret)
2713                     break;
2714             }
2715         }
2716         else
2717         {
2718             FIXME("signer %d: unimplemented for key id\n", i);
2719         }
2720     }
2721     if (ret)
2722         ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, 0, i,
2723          &info->SubjectPublicKeyInfo);
2724     else
2725         SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2726
2727     return ret;
2728 }
2729
2730 static BOOL CDecodeSignedMsg_VerifySignatureEx(CDecodeMsg *msg,
2731  PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA para)
2732 {
2733     BOOL ret = FALSE;
2734
2735     if (para->cbSize != sizeof(CMSG_CTRL_VERIFY_SIGNATURE_EX_PARA))
2736         SetLastError(ERROR_INVALID_PARAMETER);
2737     else if (para->dwSignerIndex >= msg->u.signed_data.info->cSignerInfo)
2738         SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2739     else if (!msg->u.signed_data.signerHandles)
2740         SetLastError(NTE_BAD_SIGNATURE);
2741     else
2742     {
2743         switch (para->dwSignerType)
2744         {
2745         case CMSG_VERIFY_SIGNER_PUBKEY:
2746             ret = CDecodeSignedMsg_VerifySignatureWithKey(msg,
2747              para->hCryptProv, para->dwSignerIndex, para->pvSigner);
2748             break;
2749         case CMSG_VERIFY_SIGNER_CERT:
2750         {
2751             PCCERT_CONTEXT cert = para->pvSigner;
2752
2753             ret = CDecodeSignedMsg_VerifySignatureWithKey(msg, para->hCryptProv,
2754              para->dwSignerIndex, &cert->pCertInfo->SubjectPublicKeyInfo);
2755             break;
2756         }
2757         default:
2758             FIXME("unimplemented for signer type %d\n", para->dwSignerType);
2759             SetLastError(CRYPT_E_SIGNER_NOT_FOUND);
2760         }
2761     }
2762     return ret;
2763 }
2764
2765 static BOOL CDecodeMsg_Control(HCRYPTMSG hCryptMsg, DWORD dwFlags,
2766  DWORD dwCtrlType, const void *pvCtrlPara)
2767 {
2768     CDecodeMsg *msg = hCryptMsg;
2769     BOOL ret = FALSE;
2770
2771     switch (dwCtrlType)
2772     {
2773     case CMSG_CTRL_VERIFY_SIGNATURE:
2774         switch (msg->type)
2775         {
2776         case CMSG_SIGNED:
2777             ret = CDecodeSignedMsg_VerifySignature(msg, (PCERT_INFO)pvCtrlPara);
2778             break;
2779         default:
2780             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2781         }
2782         break;
2783     case CMSG_CTRL_DECRYPT:
2784         switch (msg->type)
2785         {
2786         default:
2787             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2788         }
2789         break;
2790     case CMSG_CTRL_VERIFY_HASH:
2791         switch (msg->type)
2792         {
2793         case CMSG_HASHED:
2794             ret = CDecodeHashMsg_VerifyHash(msg);
2795             break;
2796         default:
2797             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2798         }
2799         break;
2800     case CMSG_CTRL_VERIFY_SIGNATURE_EX:
2801         switch (msg->type)
2802         {
2803         case CMSG_SIGNED:
2804             ret = CDecodeSignedMsg_VerifySignatureEx(msg,
2805              (PCMSG_CTRL_VERIFY_SIGNATURE_EX_PARA)pvCtrlPara);
2806             break;
2807         default:
2808             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
2809         }
2810         break;
2811     default:
2812         SetLastError(CRYPT_E_CONTROL_TYPE);
2813     }
2814     return ret;
2815 }
2816
2817 HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
2818  DWORD dwMsgType, HCRYPTPROV_LEGACY hCryptProv, PCERT_INFO pRecipientInfo,
2819  PCMSG_STREAM_INFO pStreamInfo)
2820 {
2821     CDecodeMsg *msg;
2822
2823     TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
2824      dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
2825
2826     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
2827     {
2828         SetLastError(E_INVALIDARG);
2829         return NULL;
2830     }
2831     msg = CryptMemAlloc(sizeof(CDecodeMsg));
2832     if (msg)
2833     {
2834         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
2835          CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update,
2836          CDecodeMsg_Control);
2837         msg->type = dwMsgType;
2838         if (hCryptProv)
2839             msg->crypt_prov = hCryptProv;
2840         else
2841         {
2842             msg->crypt_prov = CRYPT_GetDefaultProvider();
2843             msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
2844         }
2845         memset(&msg->u, 0, sizeof(msg->u));
2846         msg->msg_data.cbData = 0;
2847         msg->msg_data.pbData = NULL;
2848         msg->detached_data.cbData = 0;
2849         msg->detached_data.pbData = NULL;
2850         msg->properties = ContextPropertyList_Create();
2851     }
2852     return msg;
2853 }
2854
2855 HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
2856 {
2857     TRACE("(%p)\n", hCryptMsg);
2858
2859     if (hCryptMsg)
2860     {
2861         CryptMsgBase *msg = hCryptMsg;
2862
2863         InterlockedIncrement(&msg->ref);
2864     }
2865     return hCryptMsg;
2866 }
2867
2868 BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
2869 {
2870     TRACE("(%p)\n", hCryptMsg);
2871
2872     if (hCryptMsg)
2873     {
2874         CryptMsgBase *msg = hCryptMsg;
2875
2876         if (InterlockedDecrement(&msg->ref) == 0)
2877         {
2878             TRACE("freeing %p\n", msg);
2879             if (msg->close)
2880                 msg->close(msg);
2881             CryptMemFree(msg);
2882         }
2883     }
2884     return TRUE;
2885 }
2886
2887 BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
2888  DWORD cbData, BOOL fFinal)
2889 {
2890     CryptMsgBase *msg = hCryptMsg;
2891
2892     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
2893
2894     return msg->update(hCryptMsg, pbData, cbData, fFinal);
2895 }
2896
2897 BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
2898  DWORD dwIndex, void *pvData, DWORD *pcbData)
2899 {
2900     CryptMsgBase *msg = hCryptMsg;
2901
2902     TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
2903      pvData, pcbData);
2904     return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
2905 }
2906
2907 BOOL WINAPI CryptMsgControl(HCRYPTMSG hCryptMsg, DWORD dwFlags,
2908  DWORD dwCtrlType, const void *pvCtrlPara)
2909 {
2910     CryptMsgBase *msg = hCryptMsg;
2911
2912     TRACE("(%p, %08x, %d, %p)\n", hCryptMsg, dwFlags, dwCtrlType,
2913      pvCtrlPara);
2914     return msg->control(hCryptMsg, dwFlags, dwCtrlType, pvCtrlPara);
2915 }
2916
2917 static CERT_INFO *CRYPT_GetSignerCertInfoFromMsg(HCRYPTMSG msg,
2918  DWORD dwSignerIndex)
2919 {
2920     CERT_INFO *certInfo = NULL;
2921     DWORD size;
2922
2923     if (CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM, dwSignerIndex, NULL,
2924      &size))
2925     {
2926         certInfo = CryptMemAlloc(size);
2927         if (certInfo)
2928         {
2929             if (!CryptMsgGetParam(msg, CMSG_SIGNER_CERT_INFO_PARAM,
2930              dwSignerIndex, certInfo, &size))
2931             {
2932                 CryptMemFree(certInfo);
2933                 certInfo = NULL;
2934             }
2935         }
2936     }
2937     return certInfo;
2938 }
2939
2940 BOOL WINAPI CryptMsgGetAndVerifySigner(HCRYPTMSG hCryptMsg, DWORD cSignerStore,
2941  HCERTSTORE *rghSignerStore, DWORD dwFlags, PCCERT_CONTEXT *ppSigner,
2942  DWORD *pdwSignerIndex)
2943 {
2944     HCERTSTORE store;
2945     DWORD i, signerIndex = 0;
2946     PCCERT_CONTEXT signerCert = NULL;
2947     BOOL ret = FALSE;
2948
2949     TRACE("(%p, %d, %p, %08x, %p, %p)\n", hCryptMsg, cSignerStore,
2950      rghSignerStore, dwFlags, ppSigner, pdwSignerIndex);
2951
2952     /* Clear output parameters */
2953     if (ppSigner)
2954         *ppSigner = NULL;
2955     if (pdwSignerIndex && !(dwFlags & CMSG_USE_SIGNER_INDEX_FLAG))
2956         *pdwSignerIndex = 0;
2957
2958     /* Create store to search for signer certificates */
2959     store = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0,
2960      CERT_STORE_CREATE_NEW_FLAG, NULL);
2961     if (!(dwFlags & CMSG_TRUSTED_SIGNER_FLAG))
2962     {
2963         HCERTSTORE msgStore = CertOpenStore(CERT_STORE_PROV_MSG, 0, 0, 0,
2964          hCryptMsg);
2965
2966         CertAddStoreToCollection(store, msgStore, 0, 0);
2967         CertCloseStore(msgStore, 0);
2968     }
2969     for (i = 0; i < cSignerStore; i++)
2970         CertAddStoreToCollection(store, rghSignerStore[i], 0, 0);
2971
2972     /* Find signer cert */
2973     if (dwFlags & CMSG_USE_SIGNER_INDEX_FLAG)
2974     {
2975         CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
2976          *pdwSignerIndex);
2977
2978         if (signer)
2979         {
2980             signerIndex = *pdwSignerIndex;
2981             signerCert = CertFindCertificateInStore(store, X509_ASN_ENCODING,
2982              0, CERT_FIND_SUBJECT_CERT, signer, NULL);
2983             CryptMemFree(signer);
2984         }
2985     }
2986     else
2987     {
2988         DWORD count, size = sizeof(count);
2989
2990         if (CryptMsgGetParam(hCryptMsg, CMSG_SIGNER_COUNT_PARAM, 0, &count,
2991          &size))
2992         {
2993             for (i = 0; !signerCert && i < count; i++)
2994             {
2995                 CERT_INFO *signer = CRYPT_GetSignerCertInfoFromMsg(hCryptMsg,
2996                  i);
2997
2998                 if (signer)
2999                 {
3000                     signerCert = CertFindCertificateInStore(store,
3001                      X509_ASN_ENCODING, 0, CERT_FIND_SUBJECT_CERT, signer,
3002                      NULL);
3003                     if (signerCert)
3004                         signerIndex = i;
3005                     CryptMemFree(signer);
3006                 }
3007             }
3008         }
3009         if (!signerCert)
3010             SetLastError(CRYPT_E_NO_TRUSTED_SIGNER);
3011     }
3012     if (signerCert)
3013     {
3014         if (!(dwFlags & CMSG_SIGNER_ONLY_FLAG))
3015             ret = CryptMsgControl(hCryptMsg, 0, CMSG_CTRL_VERIFY_SIGNATURE,
3016              signerCert->pCertInfo);
3017         else
3018             ret = TRUE;
3019         if (ret)
3020         {
3021             if (ppSigner)
3022                 *ppSigner = CertDuplicateCertificateContext(signerCert);
3023             if (pdwSignerIndex)
3024                 *pdwSignerIndex = signerIndex;
3025         }
3026         CertFreeCertificateContext(signerCert);
3027     }
3028
3029     CertCloseStore(store, 0);
3030     return ret;
3031 }
3032
3033 BOOL WINAPI CryptMsgVerifyCountersignatureEncodedEx(HCRYPTPROV_LEGACY hCryptProv,
3034  DWORD dwEncodingType, PBYTE pbSignerInfo, DWORD cbSignerInfo,
3035  PBYTE pbSignerInfoCountersignature, DWORD cbSignerInfoCountersignature,
3036  DWORD dwSignerType, void *pvSigner, DWORD dwFlags, void *pvReserved)
3037 {
3038     FIXME("(%08lx, %08x, %p, %d, %p, %d, %d, %p, %08x, %p): stub\n", hCryptProv,
3039      dwEncodingType, pbSignerInfo, cbSignerInfo, pbSignerInfoCountersignature,
3040      cbSignerInfoCountersignature, dwSignerType, pvSigner, dwFlags, pvReserved);
3041     return FALSE;
3042 }
3043
3044 BOOL WINAPI CryptMsgEncodeAndSignCTL(DWORD dwMsgEncodingType,
3045  PCTL_INFO pCtlInfo, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
3046  BYTE *pbEncoded, DWORD *pcbEncoded)
3047 {
3048     BOOL ret;
3049     BYTE *pbCtlContent;
3050     DWORD cbCtlContent;
3051
3052     TRACE("(%08x, %p, %p, %08x, %p, %p)\n", dwMsgEncodingType, pCtlInfo,
3053      pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3054
3055     if (dwFlags)
3056     {
3057         FIXME("unimplemented for flags %08x\n", dwFlags);
3058         return FALSE;
3059     }
3060     if ((ret = CryptEncodeObjectEx(dwMsgEncodingType, PKCS_CTL, pCtlInfo,
3061      CRYPT_ENCODE_ALLOC_FLAG, NULL, &pbCtlContent, &cbCtlContent)))
3062     {
3063         ret = CryptMsgSignCTL(dwMsgEncodingType, pbCtlContent, cbCtlContent,
3064          pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3065         LocalFree(pbCtlContent);
3066     }
3067     return ret;
3068 }
3069
3070 BOOL WINAPI CryptMsgSignCTL(DWORD dwMsgEncodingType, BYTE *pbCtlContent,
3071  DWORD cbCtlContent, PCMSG_SIGNED_ENCODE_INFO pSignInfo, DWORD dwFlags,
3072  BYTE *pbEncoded, DWORD *pcbEncoded)
3073 {
3074     static char oid_ctl[] = szOID_CTL;
3075     BOOL ret;
3076     HCRYPTMSG msg;
3077
3078     TRACE("(%08x, %p, %d, %p, %08x, %p, %p)\n", dwMsgEncodingType,
3079      pbCtlContent, cbCtlContent, pSignInfo, dwFlags, pbEncoded, pcbEncoded);
3080
3081     if (dwFlags)
3082     {
3083         FIXME("unimplemented for flags %08x\n", dwFlags);
3084         return FALSE;
3085     }
3086     msg = CryptMsgOpenToEncode(dwMsgEncodingType, 0, CMSG_SIGNED, pSignInfo,
3087      oid_ctl, NULL);
3088     if (msg)
3089     {
3090         ret = CryptMsgUpdate(msg, pbCtlContent, cbCtlContent, TRUE);
3091         if (ret)
3092             ret = CryptMsgGetParam(msg, CMSG_CONTENT_PARAM, 0, pbEncoded,
3093              pcbEncoded);
3094         CryptMsgClose(msg);
3095     }
3096     else
3097         ret = FALSE;
3098     return ret;
3099 }