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 #include <stdarg.h>
  19 #include "windef.h"
  20 #include "winbase.h"
  21 #include "wincrypt.h"
  22 #include "snmp.h"
  23
  24 #include "wine/debug.h"
  25 #include "wine/exception.h"
  26 #include "crypt32_private.h"
  27
  28 WINE_DEFAULT_DEBUG_CHANNEL(crypt);
  29
  30 /* Called when a message's ref count reaches zero.  Free any message-specific
  31  * data here.
  32  */
  33 typedef void (*CryptMsgCloseFunc)(HCRYPTMSG msg);
  34
  35 typedef BOOL (*CryptMsgGetParamFunc)(HCRYPTMSG hCryptMsg, DWORD dwParamType,
  36  DWORD dwIndex, void *pvData, DWORD *pcbData);
  37
  38 typedef BOOL (*CryptMsgUpdateFunc)(HCRYPTMSG hCryptMsg, const BYTE *pbData,
  39  DWORD cbData, BOOL fFinal);
  40
  41 typedef enum _CryptMsgState {
  42     MsgStateInit,
  43     MsgStateUpdated,
  44     MsgStateFinalized
  45 } CryptMsgState;
  46
  47 typedef struct _CryptMsgBase
  48 {
  49     LONG                 ref;
  50     DWORD                open_flags;
  51     BOOL                 streamed;
  52     CMSG_STREAM_INFO     stream_info;
  53     CryptMsgState        state;
  54     CryptMsgCloseFunc    close;
  55     CryptMsgUpdateFunc   update;
  56     CryptMsgGetParamFunc get_param;
  57 } CryptMsgBase;
  58
  59 static inline void CryptMsgBase_Init(CryptMsgBase *msg, DWORD dwFlags,
  60  PCMSG_STREAM_INFO pStreamInfo, CryptMsgCloseFunc close,
  61  CryptMsgGetParamFunc get_param, CryptMsgUpdateFunc update)
  62 {
  63     msg->ref = 1;
  64     msg->open_flags = dwFlags;
  65     if (pStreamInfo)
  66     {
  67         msg->streamed = TRUE;
  68         memcpy(&msg->stream_info, pStreamInfo, sizeof(msg->stream_info));
  69     }
  70     else
  71     {
  72         msg->streamed = FALSE;
  73         memset(&msg->stream_info, 0, sizeof(msg->stream_info));
  74     }
  75     msg->close = close;
  76     msg->get_param = get_param;
  77     msg->update = update;
  78     msg->state = MsgStateInit;
  79 }
  80
  81 typedef struct _CDataEncodeMsg
  82 {
  83     CryptMsgBase base;
  84     DWORD        bare_content_len;
  85     LPBYTE       bare_content;
  86 } CDataEncodeMsg;
  87
  88 static const BYTE empty_data_content[] = { 0x04,0x00 };
  89
  90 static void CDataEncodeMsg_Close(HCRYPTMSG hCryptMsg)
  91 {
  92     CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
  93
  94     if (msg->bare_content != empty_data_content)
  95         LocalFree(msg->bare_content);
  96 }
  97
  98 static WINAPI BOOL CRYPT_EncodeContentLength(DWORD dwCertEncodingType,
  99  LPCSTR lpszStructType, const void *pvStructInfo, DWORD dwFlags,
 100  PCRYPT_ENCODE_PARA pEncodePara, BYTE *pbEncoded, DWORD *pcbEncoded)
 101 {
 102     const CDataEncodeMsg *msg = (const CDataEncodeMsg *)pvStructInfo;
 103     DWORD lenBytes;
 104     BOOL ret = TRUE;
 105
 106     /* Trick:  report bytes needed based on total message length, even though
 107      * the message isn't available yet.  The caller will use the length
 108      * reported here to encode its length.
 109      */
 110     CRYPT_EncodeLen(msg->base.stream_info.cbContent, NULL, &lenBytes);
 111     if (!pbEncoded)
 112         *pcbEncoded = 1 + lenBytes + msg->base.stream_info.cbContent;
 113     else
 114     {
 115         if ((ret = CRYPT_EncodeEnsureSpace(dwFlags, pEncodePara, pbEncoded,
 116          pcbEncoded, 1 + lenBytes)))
 117         {
 118             if (dwFlags & CRYPT_ENCODE_ALLOC_FLAG)
 119                 pbEncoded = *(BYTE **)pbEncoded;
 120             *pbEncoded++ = ASN_OCTETSTRING;
 121             CRYPT_EncodeLen(msg->base.stream_info.cbContent, pbEncoded,
 122              &lenBytes);
 123         }
 124     }
 125     return ret;
 126 }
 127
 128 static BOOL CRYPT_EncodeDataContentInfoHeader(CDataEncodeMsg *msg,
 129  CRYPT_DATA_BLOB *header)
 130 {
 131     BOOL ret;
 132
 133     if (msg->base.streamed && msg->base.stream_info.cbContent == 0xffffffff)
 134     {
 135         FIXME("unimplemented for indefinite-length encoding\n");
 136         header->cbData = 0;
 137         header->pbData = NULL;
 138         ret = TRUE;
 139     }
 140     else
 141     {
 142         struct AsnConstructedItem constructed = { 0, msg,
 143          CRYPT_EncodeContentLength };
 144         struct AsnEncodeSequenceItem items[2] = {
 145          { szOID_RSA_data, CRYPT_AsnEncodeOid, 0 },
 146          { &constructed,   CRYPT_AsnEncodeConstructed, 0 },
 147         };
 148
 149         ret = CRYPT_AsnEncodeSequence(X509_ASN_ENCODING, items,
 150          sizeof(items) / sizeof(items[0]), CRYPT_ENCODE_ALLOC_FLAG, NULL,
 151          (LPBYTE)&header->pbData, &header->cbData);
 152         if (ret)
 153         {
 154             /* Trick:  subtract the content length from the reported length,
 155              * as the actual content hasn't come yet.
 156              */
 157             header->cbData -= msg->base.stream_info.cbContent;
 158         }
 159     }
 160     return ret;
 161 }
 162
 163 static BOOL CDataEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
 164  DWORD cbData, BOOL fFinal)
 165 {
 166     CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
 167     BOOL ret = FALSE;
 168
 169     if (msg->base.streamed)
 170     {
 171         __TRY
 172         {
 173             if (msg->base.state != MsgStateUpdated)
 174             {
 175                 CRYPT_DATA_BLOB header;
 176
 177                 ret = CRYPT_EncodeDataContentInfoHeader(msg, &header);
 178                 if (ret)
 179                 {
 180                     ret = msg->base.stream_info.pfnStreamOutput(
 181                      msg->base.stream_info.pvArg, header.pbData, header.cbData,
 182                      FALSE);
 183                     LocalFree(header.pbData);
 184                 }
 185             }
 186             if (!fFinal)
 187                 ret = msg->base.stream_info.pfnStreamOutput(
 188                  msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
 189                  FALSE);
 190             else
 191             {
 192                 if (msg->base.stream_info.cbContent == 0xffffffff)
 193                 {
 194                     BYTE indefinite_trailer[6] = { 0 };
 195
 196                     ret = msg->base.stream_info.pfnStreamOutput(
 197                      msg->base.stream_info.pvArg, (BYTE *)pbData, cbData,
 198                      FALSE);
 199                     if (ret)
 200                         ret = msg->base.stream_info.pfnStreamOutput(
 201                          msg->base.stream_info.pvArg, indefinite_trailer,
 202                          sizeof(indefinite_trailer), TRUE);
 203                 }
 204                 else
 205                     ret = msg->base.stream_info.pfnStreamOutput(
 206                      msg->base.stream_info.pvArg, (BYTE *)pbData, cbData, TRUE);
 207             }
 208         }
 209         __EXCEPT_PAGE_FAULT
 210         {
 211             SetLastError(STATUS_ACCESS_VIOLATION);
 212         }
 213         __ENDTRY;
 214     }
 215     else
 216     {
 217         if (!fFinal)
 218         {
 219             if (msg->base.open_flags & CMSG_DETACHED_FLAG)
 220                 SetLastError(E_INVALIDARG);
 221             else
 222                 SetLastError(CRYPT_E_MSG_ERROR);
 223         }
 224         else
 225         {
 226             if (!cbData)
 227                 SetLastError(E_INVALIDARG);
 228             else
 229             {
 230                 CRYPT_DATA_BLOB blob = { cbData, (LPBYTE)pbData };
 231
 232                 /* non-streamed data messages don't allow non-final updates,
 233                  * don't bother checking whether data already exist, they can't.
 234                  */
 235                 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
 236                  &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL, &msg->bare_content,
 237                  &msg->bare_content_len);
 238             }
 239         }
 240     }
 241     return ret;
 242 }
 243
 244 static BOOL CRYPT_CopyParam(void *pvData, DWORD *pcbData, const BYTE *src,
 245  DWORD len)
 246 {
 247     BOOL ret = TRUE;
 248
 249     if (!pvData)
 250         *pcbData = len;
 251     else if (*pcbData < len)
 252     {
 253         *pcbData = len;
 254         SetLastError(ERROR_MORE_DATA);
 255         ret = FALSE;
 256     }
 257     else
 258     {
 259         *pcbData = len;
 260         memcpy(pvData, src, len);
 261     }
 262     return ret;
 263 }
 264
 265 static BOOL CDataEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
 266  DWORD dwIndex, void *pvData, DWORD *pcbData)
 267 {
 268     CDataEncodeMsg *msg = (CDataEncodeMsg *)hCryptMsg;
 269     BOOL ret = FALSE;
 270
 271     switch (dwParamType)
 272     {
 273     case CMSG_CONTENT_PARAM:
 274         if (msg->base.streamed)
 275             SetLastError(E_INVALIDARG);
 276         else
 277         {
 278             CRYPT_CONTENT_INFO info;
 279             char rsa_data[] = "1.2.840.113549.1.7.1";
 280
 281             info.pszObjId = rsa_data;
 282             info.Content.cbData = msg->bare_content_len;
 283             info.Content.pbData = msg->bare_content;
 284             ret = CryptEncodeObject(X509_ASN_ENCODING, PKCS_CONTENT_INFO, &info,
 285              pvData, pcbData);
 286         }
 287         break;
 288     case CMSG_BARE_CONTENT_PARAM:
 289         if (msg->base.streamed)
 290             SetLastError(E_INVALIDARG);
 291         else
 292             ret = CRYPT_CopyParam(pvData, pcbData, msg->bare_content,
 293              msg->bare_content_len);
 294         break;
 295     default:
 296         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
 297     }
 298     return ret;
 299 }
 300
 301 static HCRYPTMSG CDataEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
 302  LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
 303 {
 304     CDataEncodeMsg *msg;
 305
 306     if (pvMsgEncodeInfo)
 307     {
 308         SetLastError(E_INVALIDARG);
 309         return NULL;
 310     }
 311     msg = CryptMemAlloc(sizeof(CDataEncodeMsg));
 312     if (msg)
 313     {
 314         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
 315          CDataEncodeMsg_Close, CDataEncodeMsg_GetParam, CDataEncodeMsg_Update);
 316         msg->bare_content_len = sizeof(empty_data_content);
 317         msg->bare_content = (LPBYTE)empty_data_content;
 318     }
 319     return (HCRYPTMSG)msg;
 320 }
 321
 322 typedef struct _CHashEncodeMsg
 323 {
 324     CryptMsgBase    base;
 325     HCRYPTPROV      prov;
 326     HCRYPTHASH      hash;
 327     CRYPT_DATA_BLOB data;
 328 } CHashEncodeMsg;
 329
 330 static void CHashEncodeMsg_Close(HCRYPTMSG hCryptMsg)
 331 {
 332     CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
 333
 334     CryptMemFree(msg->data.pbData);
 335     CryptDestroyHash(msg->hash);
 336     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
 337         CryptReleaseContext(msg->prov, 0);
 338 }
 339
 340 static BOOL CRYPT_EncodePKCSDigestedData(CHashEncodeMsg *msg, void *pvData,
 341  DWORD *pcbData)
 342 {
 343     BOOL ret;
 344     ALG_ID algID;
 345     DWORD size = sizeof(algID);
 346
 347     ret = CryptGetHashParam(msg->hash, HP_ALGID, (BYTE *)&algID, &size, 0);
 348     if (ret)
 349     {
 350         CRYPT_DIGESTED_DATA digestedData = { 0 };
 351         char oid_rsa_data[] = szOID_RSA_data;
 352
 353         digestedData.version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
 354         digestedData.DigestAlgorithm.pszObjId = (LPSTR)CertAlgIdToOID(algID);
 355         /* FIXME: what about digestedData.DigestAlgorithm.Parameters? */
 356         /* Quirk:  OID is only encoded messages if an update has happened */
 357         if (msg->base.state != MsgStateInit)
 358             digestedData.ContentInfo.pszObjId = oid_rsa_data;
 359         if (!(msg->base.open_flags & CMSG_DETACHED_FLAG) && msg->data.cbData)
 360         {
 361             ret = CRYPT_AsnEncodeOctets(0, NULL, &msg->data,
 362              CRYPT_ENCODE_ALLOC_FLAG, NULL,
 363              (LPBYTE)&digestedData.ContentInfo.Content.pbData,
 364              &digestedData.ContentInfo.Content.cbData);
 365         }
 366         if (msg->base.state == MsgStateFinalized)
 367         {
 368             size = sizeof(DWORD);
 369             ret = CryptGetHashParam(msg->hash, HP_HASHSIZE,
 370              (LPBYTE)&digestedData.hash.cbData, &size, 0);
 371             if (ret)
 372             {
 373                 digestedData.hash.pbData = CryptMemAlloc(
 374                  digestedData.hash.cbData);
 375                 ret = CryptGetHashParam(msg->hash, HP_HASHVAL,
 376                  digestedData.hash.pbData, &digestedData.hash.cbData, 0);
 377             }
 378         }
 379         if (ret)
 380             ret = CRYPT_AsnEncodePKCSDigestedData(&digestedData, pvData,
 381              pcbData);
 382         CryptMemFree(digestedData.hash.pbData);
 383         LocalFree(digestedData.ContentInfo.Content.pbData);
 384     }
 385     return ret;
 386 }
 387
 388 static BOOL CHashEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
 389  DWORD dwIndex, void *pvData, DWORD *pcbData)
 390 {
 391     CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
 392     BOOL ret = FALSE;
 393
 394     TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
 395      pvData, pcbData);
 396
 397     switch (dwParamType)
 398     {
 399     case CMSG_BARE_CONTENT_PARAM:
 400         if (msg->base.streamed)
 401             SetLastError(E_INVALIDARG);
 402         else
 403             ret = CRYPT_EncodePKCSDigestedData(msg, pvData, pcbData);
 404         break;
 405     case CMSG_CONTENT_PARAM:
 406     {
 407         CRYPT_CONTENT_INFO info;
 408
 409         ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
 410          &info.Content.cbData);
 411         if (ret)
 412         {
 413             info.Content.pbData = CryptMemAlloc(info.Content.cbData);
 414             if (info.Content.pbData)
 415             {
 416                 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
 417                  info.Content.pbData, &info.Content.cbData);
 418                 if (ret)
 419                 {
 420                     char oid_rsa_hashed[] = szOID_RSA_hashedData;
 421
 422                     info.pszObjId = oid_rsa_hashed;
 423                     ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
 424                      PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
 425                 }
 426                 CryptMemFree(info.Content.pbData);
 427             }
 428             else
 429                 ret = FALSE;
 430         }
 431         break;
 432     }
 433     case CMSG_COMPUTED_HASH_PARAM:
 434         ret = CryptGetHashParam(msg->hash, HP_HASHVAL, (BYTE *)pvData, pcbData,
 435          0);
 436         break;
 437     case CMSG_VERSION_PARAM:
 438         if (msg->base.state != MsgStateFinalized)
 439             SetLastError(CRYPT_E_MSG_ERROR);
 440         else
 441         {
 442             DWORD version = CMSG_HASHED_DATA_PKCS_1_5_VERSION;
 443
 444             /* Since the data are always encoded as octets, the version is
 445              * always 0 (see rfc3852, section 7)
 446              */
 447             ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&version,
 448              sizeof(version));
 449         }
 450         break;
 451     default:
 452         ret = FALSE;
 453     }
 454     return ret;
 455 }
 456
 457 static BOOL CHashEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
 458  DWORD cbData, BOOL fFinal)
 459 {
 460     CHashEncodeMsg *msg = (CHashEncodeMsg *)hCryptMsg;
 461     BOOL ret = FALSE;
 462
 463     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
 464
 465     if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
 466     {
 467         /* Doesn't do much, as stream output is never called, and you
 468          * can't get the content.
 469          */
 470         ret = CryptHashData(msg->hash, pbData, cbData, 0);
 471     }
 472     else
 473     {
 474         if (!fFinal)
 475             SetLastError(CRYPT_E_MSG_ERROR);
 476         else
 477         {
 478             ret = CryptHashData(msg->hash, pbData, cbData, 0);
 479             if (ret)
 480             {
 481                 msg->data.pbData = CryptMemAlloc(cbData);
 482                 if (msg->data.pbData)
 483                 {
 484                     memcpy(msg->data.pbData + msg->data.cbData, pbData, cbData);
 485                     msg->data.cbData += cbData;
 486                 }
 487                 else
 488                     ret = FALSE;
 489             }
 490         }
 491     }
 492     return ret;
 493 }
 494
 495 static HCRYPTMSG CHashEncodeMsg_Open(DWORD dwFlags, const void *pvMsgEncodeInfo,
 496  LPSTR pszInnerContentObjID, PCMSG_STREAM_INFO pStreamInfo)
 497 {
 498     CHashEncodeMsg *msg;
 499     const CMSG_HASHED_ENCODE_INFO *info =
 500      (const CMSG_HASHED_ENCODE_INFO *)pvMsgEncodeInfo;
 501     HCRYPTPROV prov;
 502     ALG_ID algID;
 503
 504     if (info->cbSize != sizeof(CMSG_HASHED_ENCODE_INFO))
 505     {
 506         SetLastError(E_INVALIDARG);
 507         return NULL;
 508     }
 509     if (!(algID = CertOIDToAlgId(info->HashAlgorithm.pszObjId)))
 510     {
 511         SetLastError(CRYPT_E_UNKNOWN_ALGO);
 512         return NULL;
 513     }
 514     if (info->hCryptProv)
 515         prov = info->hCryptProv;
 516     else
 517     {
 518         prov = CRYPT_GetDefaultProvider();
 519         dwFlags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
 520     }
 521     msg = CryptMemAlloc(sizeof(CHashEncodeMsg));
 522     if (msg)
 523     {
 524         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
 525          CHashEncodeMsg_Close, CHashEncodeMsg_GetParam, CHashEncodeMsg_Update);
 526         msg->prov = prov;
 527         msg->data.cbData = 0;
 528         msg->data.pbData = NULL;
 529         if (!CryptCreateHash(prov, algID, 0, 0, &msg->hash))
 530         {
 531             CryptMsgClose(msg);
 532             msg = NULL;
 533         }
 534     }
 535     return (HCRYPTMSG)msg;
 536 }
 537
 538 typedef struct _CMSG_SIGNER_ENCODE_INFO_WITH_CMS
 539 {
 540     DWORD                      cbSize;
 541     PCERT_INFO                 pCertInfo;
 542     HCRYPTPROV                 hCryptProv;
 543     DWORD                      dwKeySpec;
 544     CRYPT_ALGORITHM_IDENTIFIER HashAlgorithm;
 545     void                      *pvHashAuxInfo;
 546     DWORD                      cAuthAttr;
 547     PCRYPT_ATTRIBUTE           rgAuthAttr;
 548     DWORD                      cUnauthAttr;
 549     PCRYPT_ATTRIBUTE           rgUnauthAttr;
 550     CERT_ID                    SignerId;
 551     CRYPT_ALGORITHM_IDENTIFIER HashEncryptionAlgorithm;
 552     void                      *pvHashEncryptionAuxInfo;
 553 } CMSG_SIGNER_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNER_ENCODE_INFO_WITH_CMS;
 554
 555 typedef struct _CMSG_SIGNED_ENCODE_INFO_WITH_CMS
 556 {
 557     DWORD                             cbSize;
 558     DWORD                             cSigners;
 559     PCMSG_SIGNER_ENCODE_INFO_WITH_CMS rgSigners;
 560     DWORD                             cCertEncoded;
 561     PCERT_BLOB                        rgCertEncoded;
 562     DWORD                             cCrlEncoded;
 563     PCRL_BLOB                         rgCrlEncoded;
 564     DWORD                             cAttrCertEncoded;
 565     PCERT_BLOB                        rgAttrCertEncoded;
 566 } CMSG_SIGNED_ENCODE_INFO_WITH_CMS, *PCMSG_SIGNED_ENCODE_INFO_WITH_CMS;
 567
 568 static BOOL CRYPT_IsValidSigner(CMSG_SIGNER_ENCODE_INFO_WITH_CMS *signer)
 569 {
 570     if (signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO) &&
 571      signer->cbSize != sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
 572     {
 573         SetLastError(E_INVALIDARG);
 574         return FALSE;
 575     }
 576     if (signer->cbSize == sizeof(CMSG_SIGNER_ENCODE_INFO_WITH_CMS))
 577     {
 578         FIXME("CMSG_SIGNER_ENCODE_INFO with CMS fields unsupported\n");
 579         return FALSE;
 580     }
 581     if (!signer->pCertInfo->SerialNumber.cbData)
 582     {
 583         SetLastError(E_INVALIDARG);
 584         return FALSE;
 585     }
 586     if (!signer->pCertInfo->Issuer.cbData)
 587     {
 588         SetLastError(E_INVALIDARG);
 589         return FALSE;
 590     }
 591     if (!signer->hCryptProv)
 592     {
 593         SetLastError(E_INVALIDARG);
 594         return FALSE;
 595     }
 596     if (!CertOIDToAlgId(signer->HashAlgorithm.pszObjId))
 597     {
 598         SetLastError(CRYPT_E_UNKNOWN_ALGO);
 599         return FALSE;
 600     }
 601     return TRUE;
 602 }
 603
 604 typedef struct _CSignerHandles
 605 {
 606     HCRYPTPROV       prov;
 607     HCRYPTHASH       contentHash;
 608     HCRYPTHASH       authAttrHash;
 609     HCRYPTKEY        key;
 610 } CSignerHandles;
 611
 612 static BOOL CRYPT_CopyBlob(CRYPT_DATA_BLOB *out, const CRYPT_DATA_BLOB *in)
 613 {
 614     BOOL ret = TRUE;
 615
 616     out->cbData = in->cbData;
 617     if (out->cbData)
 618     {
 619         out->pbData = CryptMemAlloc(out->cbData);
 620         if (out->pbData)
 621             memcpy(out->pbData, in->pbData, out->cbData);
 622         else
 623             ret = FALSE;
 624     }
 625     else
 626         out->pbData = NULL;
 627     return ret;
 628 }
 629
 630 typedef struct _BlobArray
 631 {
 632     DWORD            cBlobs;
 633     PCRYPT_DATA_BLOB blobs;
 634 } BlobArray;
 635
 636 static BOOL CRYPT_CopyBlobArray(BlobArray *out, const BlobArray *in)
 637 {
 638     BOOL ret = TRUE;
 639
 640     out->cBlobs = in->cBlobs;
 641     if (out->cBlobs)
 642     {
 643         out->blobs = CryptMemAlloc(out->cBlobs * sizeof(CRYPT_DATA_BLOB));
 644         if (out->blobs)
 645         {
 646             DWORD i;
 647
 648             memset(out->blobs, 0, out->cBlobs * sizeof(CRYPT_DATA_BLOB));
 649             for (i = 0; ret && i < out->cBlobs; i++)
 650                 ret = CRYPT_CopyBlob(&out->blobs[i], &in->blobs[i]);
 651         }
 652         else
 653             ret = FALSE;
 654     }
 655     return ret;
 656 }
 657
 658 static void CRYPT_FreeBlobArray(BlobArray *array)
 659 {
 660     DWORD i;
 661
 662     for (i = 0; i < array->cBlobs; i++)
 663         CryptMemFree(array->blobs[i].pbData);
 664     CryptMemFree(array->blobs);
 665 }
 666
 667 static BOOL CRYPT_CopyAttribute(CRYPT_ATTRIBUTE *out, const CRYPT_ATTRIBUTE *in)
 668 {
 669     BOOL ret;
 670
 671     out->pszObjId = CryptMemAlloc(strlen(in->pszObjId) + 1);
 672     if (out->pszObjId)
 673     {
 674         strcpy(out->pszObjId, in->pszObjId);
 675         ret = CRYPT_CopyBlobArray((BlobArray *)&out->cValue,
 676          (const BlobArray *)&in->cValue);
 677     }
 678     else
 679         ret = FALSE;
 680     return ret;
 681 }
 682
 683 static BOOL CRYPT_CopyAttributes(CRYPT_ATTRIBUTES *out,
 684  const CRYPT_ATTRIBUTES *in)
 685 {
 686     BOOL ret = TRUE;
 687
 688     out->cAttr = in->cAttr;
 689     if (out->cAttr)
 690     {
 691         out->rgAttr = CryptMemAlloc(out->cAttr * sizeof(CRYPT_ATTRIBUTE));
 692         if (out->rgAttr)
 693         {
 694             DWORD i;
 695
 696             memset(out->rgAttr, 0, out->cAttr * sizeof(CRYPT_ATTRIBUTE));
 697             for (i = 0; ret && i < out->cAttr; i++)
 698                 ret = CRYPT_CopyAttribute(&out->rgAttr[i], &in->rgAttr[i]);
 699         }
 700         else
 701             ret = FALSE;
 702     }
 703     else
 704         out->rgAttr = NULL;
 705     return ret;
 706 }
 707
 708 /* Constructs both a CSignerHandles and a CMSG_SIGNER_INFO from a
 709  * CMSG_SIGNER_ENCODE_INFO_WITH_CMS.
 710  */
 711 static BOOL CSignerInfo_Construct(CSignerHandles *handles,
 712  CMSG_SIGNER_INFO *info, CMSG_SIGNER_ENCODE_INFO_WITH_CMS *in, DWORD open_flags)
 713 {
 714     ALG_ID algID;
 715     BOOL ret;
 716
 717     handles->prov = in->hCryptProv;
 718     if (!(open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG))
 719         CryptContextAddRef(handles->prov, NULL, 0);
 720     algID = CertOIDToAlgId(in->HashAlgorithm.pszObjId);
 721     ret = CryptCreateHash(handles->prov, algID, 0, 0, &handles->contentHash);
 722     if (ret && in->cAuthAttr)
 723         ret = CryptCreateHash(handles->prov, algID, 0, 0,
 724          &handles->authAttrHash);
 725     if (ret)
 726     {
 727         /* Note: needs to change if CMS fields are supported */
 728         info->dwVersion = CMSG_SIGNER_INFO_V1;
 729         ret = CRYPT_CopyBlob(&info->Issuer, &in->pCertInfo->Issuer);
 730         if (ret)
 731             ret = CRYPT_CopyBlob(&info->SerialNumber,
 732              &in->pCertInfo->SerialNumber);
 733         /* Assumption:  algorithm IDs will point to static strings, not
 734          * stack-based ones, so copying the pointer values is safe.
 735          */
 736         info->HashAlgorithm.pszObjId = in->HashAlgorithm.pszObjId;
 737         if (ret)
 738             ret = CRYPT_CopyBlob(&info->HashAlgorithm.Parameters,
 739              &in->HashAlgorithm.Parameters);
 740         memset(&info->HashEncryptionAlgorithm, 0,
 741          sizeof(info->HashEncryptionAlgorithm));
 742         if (ret)
 743             ret = CRYPT_CopyAttributes(&info->AuthAttrs,
 744              (CRYPT_ATTRIBUTES *)&in->cAuthAttr);
 745         if (ret)
 746             ret = CRYPT_CopyAttributes(&info->UnauthAttrs,
 747              (CRYPT_ATTRIBUTES *)&in->cUnauthAttr);
 748     }
 749     return ret;
 750 }
 751
 752 static void CSignerInfo_Free(CMSG_SIGNER_INFO *info)
 753 {
 754     DWORD i, j;
 755
 756     CryptMemFree(info->Issuer.pbData);
 757     CryptMemFree(info->SerialNumber.pbData);
 758     CryptMemFree(info->HashAlgorithm.Parameters.pbData);
 759     CryptMemFree(info->EncryptedHash.pbData);
 760     for (i = 0; i < info->AuthAttrs.cAttr; i++)
 761     {
 762         for (j = 0; j < info->AuthAttrs.rgAttr[i].cValue; j++)
 763             CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue[j].pbData);
 764         CryptMemFree(info->AuthAttrs.rgAttr[i].rgValue);
 765         CryptMemFree(info->AuthAttrs.rgAttr[i].pszObjId);
 766     }
 767     CryptMemFree(info->AuthAttrs.rgAttr);
 768     for (i = 0; i < info->UnauthAttrs.cAttr; i++)
 769     {
 770         for (j = 0; j < info->UnauthAttrs.rgAttr[i].cValue; j++)
 771             CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue[j].pbData);
 772         CryptMemFree(info->UnauthAttrs.rgAttr[i].rgValue);
 773         CryptMemFree(info->UnauthAttrs.rgAttr[i].pszObjId);
 774     }
 775     CryptMemFree(info->UnauthAttrs.rgAttr);
 776 }
 777
 778 typedef struct _CSignedEncodeMsg
 779 {
 780     CryptMsgBase      base;
 781     CRYPT_DATA_BLOB   data;
 782     CRYPT_SIGNED_INFO info;
 783     CSignerHandles   *signerHandles;
 784 } CSignedEncodeMsg;
 785
 786 static void CSignedEncodeMsg_Close(HCRYPTMSG hCryptMsg)
 787 {
 788     CSignedEncodeMsg *msg = (CSignedEncodeMsg *)hCryptMsg;
 789     DWORD i;
 790
 791     CryptMemFree(msg->data.pbData);
 792     CRYPT_FreeBlobArray((BlobArray *)&msg->info.cCertEncoded);
 793     CRYPT_FreeBlobArray((BlobArray *)&msg->info.cCrlEncoded);
 794     for (i = 0; i < msg->info.cSignerInfo; i++)
 795     {
 796         CSignerInfo_Free(&msg->info.rgSignerInfo[i]);
 797         CryptDestroyKey(msg->signerHandles[i].key);
 798         CryptDestroyHash(msg->signerHandles[i].contentHash);
 799         CryptDestroyHash(msg->signerHandles[i].authAttrHash);
 800         CryptReleaseContext(msg->signerHandles[i].prov, 0);
 801     }
 802     CryptMemFree(msg->signerHandles);
 803     CryptMemFree(msg->info.rgSignerInfo);
 804 }
 805
 806 static BOOL CSignedEncodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
 807  DWORD dwIndex, void *pvData, DWORD *pcbData)
 808 {
 809     CSignedEncodeMsg *msg = (CSignedEncodeMsg *)hCryptMsg;
 810     BOOL ret = FALSE;
 811
 812     switch (dwParamType)
 813     {
 814     case CMSG_CONTENT_PARAM:
 815     {
 816         CRYPT_CONTENT_INFO info;
 817
 818         ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0, NULL,
 819          &info.Content.cbData);
 820         if (ret)
 821         {
 822             info.Content.pbData = CryptMemAlloc(info.Content.cbData);
 823             if (info.Content.pbData)
 824             {
 825                 ret = CryptMsgGetParam(hCryptMsg, CMSG_BARE_CONTENT_PARAM, 0,
 826                  info.Content.pbData, &info.Content.cbData);
 827                 if (ret)
 828                 {
 829                     char oid_rsa_signed[] = szOID_RSA_signedData;
 830
 831                     info.pszObjId = oid_rsa_signed;
 832                     ret = CryptEncodeObjectEx(X509_ASN_ENCODING,
 833                      PKCS_CONTENT_INFO, &info, 0, NULL, pvData, pcbData);
 834                 }
 835                 CryptMemFree(info.Content.pbData);
 836             }
 837             else
 838                 ret = FALSE;
 839         }
 840         break;
 841     }
 842     case CMSG_BARE_CONTENT_PARAM:
 843     {
 844         CRYPT_SIGNED_INFO info;
 845         char oid_rsa_data[] = szOID_RSA_data;
 846
 847         memcpy(&info, &msg->info, sizeof(info));
 848         /* Quirk:  OID is only encoded messages if an update has happened */
 849         if (msg->base.state != MsgStateInit)
 850             info.content.pszObjId = oid_rsa_data;
 851         else
 852             info.content.pszObjId = NULL;
 853         if (msg->data.cbData)
 854         {
 855             CRYPT_DATA_BLOB blob = { msg->data.cbData, msg->data.pbData };
 856
 857             ret = CryptEncodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
 858              &blob, CRYPT_ENCODE_ALLOC_FLAG, NULL,
 859              &info.content.Content.pbData, &info.content.Content.cbData);
 860         }
 861         else
 862         {
 863             info.content.Content.cbData = 0;
 864             info.content.Content.pbData = NULL;
 865             ret = TRUE;
 866         }
 867         if (ret)
 868         {
 869             ret = CRYPT_AsnEncodePKCSSignedInfo(&info, pvData, pcbData);
 870             LocalFree(info.content.Content.pbData);
 871         }
 872         break;
 873     }
 874     case CMSG_COMPUTED_HASH_PARAM:
 875         if (dwIndex >= msg->info.cSignerInfo)
 876             SetLastError(CRYPT_E_INVALID_INDEX);
 877         else
 878             ret = CryptGetHashParam(msg->signerHandles[dwIndex].contentHash,
 879              HP_HASHVAL, pvData, pcbData, 0);
 880         break;
 881     case CMSG_ENCODED_SIGNER:
 882         if (dwIndex >= msg->info.cSignerInfo)
 883             SetLastError(CRYPT_E_INVALID_INDEX);
 884         else
 885             ret = CryptEncodeObjectEx(X509_ASN_ENCODING | PKCS_7_ASN_ENCODING,
 886              PKCS7_SIGNER_INFO, &msg->info.rgSignerInfo[dwIndex], 0, NULL,
 887              pvData, pcbData);
 888         break;
 889     case CMSG_VERSION_PARAM:
 890         ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&msg->info.version,
 891          sizeof(msg->info.version));
 892         break;
 893     default:
 894         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
 895     }
 896     return ret;
 897 }
 898
 899 static BOOL CSignedEncodeMsg_UpdateHash(CSignedEncodeMsg *msg,
 900  const BYTE *pbData, DWORD cbData)
 901 {
 902     DWORD i;
 903     BOOL ret = TRUE;
 904
 905     TRACE("(%p, %p, %d)\n", msg, pbData, cbData);
 906
 907     for (i = 0; ret && i < msg->info.cSignerInfo; i++)
 908         ret = CryptHashData(msg->signerHandles[i].contentHash, pbData, cbData,
 909          0);
 910     return ret;
 911 }
 912
 913 static BOOL CRYPT_AppendAttribute(CRYPT_ATTRIBUTES *out,
 914  const CRYPT_ATTRIBUTE *in)
 915 {
 916     BOOL ret = FALSE;
 917
 918     out->rgAttr = CryptMemRealloc(out->rgAttr,
 919      (out->cAttr + 1) * sizeof(CRYPT_ATTRIBUTE));
 920     if (out->rgAttr)
 921     {
 922         ret = CRYPT_CopyAttribute(&out->rgAttr[out->cAttr], in);
 923         if (ret)
 924             out->cAttr++;
 925     }
 926     return ret;
 927 }
 928
 929 static BOOL CSignedEncodeMsg_AppendMessageDigestAttribute(CSignedEncodeMsg *msg,
 930  DWORD signerIndex)
 931 {
 932     BOOL ret;
 933     DWORD size;
 934     CRYPT_HASH_BLOB hash = { 0, NULL }, encodedHash = { 0, NULL };
 935     char messageDigest[] = szOID_RSA_messageDigest;
 936     CRYPT_ATTRIBUTE messageDigestAttr = { messageDigest, 1, &encodedHash };
 937
 938     size = sizeof(DWORD);
 939     ret = CryptGetHashParam(msg->signerHandles[signerIndex].contentHash,
 940      HP_HASHSIZE, (LPBYTE)&hash.cbData, &size, 0);
 941     if (ret)
 942     {
 943         hash.pbData = CryptMemAlloc(hash.cbData);
 944         ret = CryptGetHashParam(msg->signerHandles[signerIndex].contentHash,
 945          HP_HASHVAL, hash.pbData, &hash.cbData, 0);
 946         if (ret)
 947         {
 948             ret = CRYPT_AsnEncodeOctets(0, NULL, &hash, CRYPT_ENCODE_ALLOC_FLAG,
 949              NULL, (LPBYTE)&encodedHash.pbData, &encodedHash.cbData);
 950             if (ret)
 951             {
 952                 ret = CRYPT_AppendAttribute(
 953                  &msg->info.rgSignerInfo[signerIndex].AuthAttrs,
 954                  &messageDigestAttr);
 955                 LocalFree(encodedHash.pbData);
 956             }
 957         }
 958         CryptMemFree(hash.pbData);
 959     }
 960     return ret;
 961 }
 962
 963 static BOOL CSignedEncodeMsg_UpdateAuthenticatedAttributes(
 964  CSignedEncodeMsg *msg)
 965 {
 966     DWORD i;
 967     BOOL ret = TRUE;
 968
 969     TRACE("(%p)\n", msg);
 970
 971     for (i = 0; ret && i < msg->info.cSignerInfo; i++)
 972     {
 973         if (msg->info.rgSignerInfo[i].AuthAttrs.cAttr)
 974         {
 975             BYTE oid_rsa_data_encoded[] = { 0x06,0x09,0x2a,0x86,0x48,0x86,0xf7,
 976              0x0d,0x01,0x07,0x01 };
 977             CRYPT_DATA_BLOB content = { sizeof(oid_rsa_data_encoded),
 978              oid_rsa_data_encoded };
 979             char contentType[] = szOID_RSA_contentType;
 980             CRYPT_ATTRIBUTE contentTypeAttr = { contentType, 1, &content };
 981
 982             /* FIXME: does this depend on inner OID? */
 983             ret = CRYPT_AppendAttribute(&msg->info.rgSignerInfo[i].AuthAttrs,
 984              &contentTypeAttr);
 985             if (ret)
 986                 ret = CSignedEncodeMsg_AppendMessageDigestAttribute(msg, i);
 987             if (ret)
 988             {
 989                 LPBYTE encodedAttrs;
 990                 DWORD size;
 991
 992                 ret = CryptEncodeObjectEx(X509_ASN_ENCODING, PKCS_ATTRIBUTES,
 993                  &msg->info.rgSignerInfo[i].AuthAttrs, CRYPT_ENCODE_ALLOC_FLAG,
 994                  NULL, (LPBYTE)&encodedAttrs, &size);
 995                 if (ret)
 996                 {
 997                     ret = CryptHashData(msg->signerHandles[i].authAttrHash,
 998                      encodedAttrs, size, 0);
 999                     LocalFree(encodedAttrs);
1000                 }
1001             }
1002         }
1003     }
1004     TRACE("returning %d\n", ret);
1005     return ret;
1006 }
1007
1008 static void CRYPT_ReverseBytes(CRYPT_HASH_BLOB *hash)
1009 {
1010     DWORD i;
1011     BYTE tmp;
1012
1013     for (i = 0; i < hash->cbData / 2; i++)
1014     {
1015         tmp = hash->pbData[hash->cbData - i - 1];
1016         hash->pbData[hash->cbData - i - 1] = hash->pbData[i];
1017         hash->pbData[i] = tmp;
1018     }
1019 }
1020
1021 static BOOL CSignedEncodeMsg_Sign(CSignedEncodeMsg *msg)
1022 {
1023     DWORD i;
1024     BOOL ret = TRUE;
1025
1026     TRACE("(%p)\n", msg);
1027
1028     for (i = 0; ret && i < msg->info.cSignerInfo; i++)
1029     {
1030         HCRYPTHASH hash;
1031
1032         if (msg->info.rgSignerInfo[i].AuthAttrs.cAttr)
1033             hash = msg->signerHandles[i].authAttrHash;
1034         else
1035             hash = msg->signerHandles[i].contentHash;
1036         ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0, NULL,
1037          &msg->info.rgSignerInfo[i].EncryptedHash.cbData);
1038         if (ret)
1039         {
1040             msg->info.rgSignerInfo[i].EncryptedHash.pbData =
1041              CryptMemAlloc(msg->info.rgSignerInfo[i].EncryptedHash.cbData);
1042             if (msg->info.rgSignerInfo[i].EncryptedHash.pbData)
1043             {
1044                 ret = CryptSignHashW(hash, AT_SIGNATURE, NULL, 0,
1045                  msg->info.rgSignerInfo[i].EncryptedHash.pbData,
1046                  &msg->info.rgSignerInfo[i].EncryptedHash.cbData);
1047                 if (ret)
1048                     CRYPT_ReverseBytes(&msg->info.rgSignerInfo[i].EncryptedHash);
1049             }
1050             else
1051                 ret = FALSE;
1052         }
1053     }
1054     return ret;
1055 }
1056
1057 static BOOL CSignedEncodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1058  DWORD cbData, BOOL fFinal)
1059 {
1060     CSignedEncodeMsg *msg = (CSignedEncodeMsg *)hCryptMsg;
1061     BOOL ret = FALSE;
1062
1063     if (msg->base.streamed || (msg->base.open_flags & CMSG_DETACHED_FLAG))
1064     {
1065         ret = CSignedEncodeMsg_UpdateHash(msg, pbData, cbData);
1066         if (ret && fFinal)
1067         {
1068             ret = CSignedEncodeMsg_UpdateAuthenticatedAttributes(msg);
1069             if (ret)
1070                 ret = CSignedEncodeMsg_Sign(msg);
1071         }
1072         if (msg->base.streamed)
1073             FIXME("streamed partial stub\n");
1074     }
1075     else
1076     {
1077         if (!fFinal)
1078             SetLastError(CRYPT_E_MSG_ERROR);
1079         else
1080         {
1081             if (cbData)
1082             {
1083                 msg->data.pbData = CryptMemAlloc(cbData);
1084                 if (msg->data.pbData)
1085                 {
1086                     memcpy(msg->data.pbData, pbData, cbData);
1087                     msg->data.cbData = cbData;
1088                     ret = TRUE;
1089                 }
1090             }
1091             else
1092                 ret = TRUE;
1093             if (ret)
1094                 ret = CSignedEncodeMsg_UpdateHash(msg, pbData, cbData);
1095             if (ret)
1096                 ret = CSignedEncodeMsg_UpdateAuthenticatedAttributes(msg);
1097             if (ret)
1098                 ret = CSignedEncodeMsg_Sign(msg);
1099         }
1100     }
1101     return ret;
1102 }
1103
1104 static HCRYPTMSG CSignedEncodeMsg_Open(DWORD dwFlags,
1105  const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
1106  PCMSG_STREAM_INFO pStreamInfo)
1107 {
1108     const CMSG_SIGNED_ENCODE_INFO_WITH_CMS *info =
1109      (const CMSG_SIGNED_ENCODE_INFO_WITH_CMS *)pvMsgEncodeInfo;
1110     DWORD i;
1111     CSignedEncodeMsg *msg;
1112
1113     if (info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO) &&
1114      info->cbSize != sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS))
1115     {
1116         SetLastError(E_INVALIDARG);
1117         return NULL;
1118     }
1119     if (info->cbSize == sizeof(CMSG_SIGNED_ENCODE_INFO_WITH_CMS))
1120     {
1121         FIXME("CMSG_SIGNED_ENCODE_INFO with CMS fields unsupported\n");
1122         return NULL;
1123     }
1124     for (i = 0; i < info->cSigners; i++)
1125         if (!CRYPT_IsValidSigner(&info->rgSigners[i]))
1126             return NULL;
1127     msg = CryptMemAlloc(sizeof(CSignedEncodeMsg));
1128     if (msg)
1129     {
1130         BOOL ret = TRUE;
1131
1132         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1133          CSignedEncodeMsg_Close, CSignedEncodeMsg_GetParam,
1134          CSignedEncodeMsg_Update);
1135         msg->data.cbData = 0;
1136         msg->data.pbData = NULL;
1137         memset(&msg->info, 0, sizeof(msg->info));
1138         msg->info.version = CMSG_SIGNED_DATA_V1;
1139         if (info->cSigners)
1140         {
1141             msg->signerHandles =
1142              CryptMemAlloc(info->cSigners * sizeof(CSignerHandles));
1143             if (msg->signerHandles)
1144                 msg->info.rgSignerInfo =
1145                  CryptMemAlloc(info->cSigners * sizeof(CMSG_SIGNER_INFO));
1146             else
1147             {
1148                 ret = FALSE;
1149                 msg->info.rgSignerInfo = NULL;
1150             }
1151             if (msg->info.rgSignerInfo)
1152             {
1153                 msg->info.cSignerInfo = info->cSigners;
1154                 memset(msg->signerHandles, 0,
1155                  msg->info.cSignerInfo * sizeof(CSignerHandles));
1156                 memset(msg->info.rgSignerInfo, 0,
1157                  msg->info.cSignerInfo * sizeof(CMSG_SIGNER_INFO));
1158                 for (i = 0; ret && i < msg->info.cSignerInfo; i++)
1159                     ret = CSignerInfo_Construct(&msg->signerHandles[i],
1160                      &msg->info.rgSignerInfo[i], &info->rgSigners[i], dwFlags);
1161             }
1162             else
1163                 ret = FALSE;
1164         }
1165         if (ret)
1166             ret = CRYPT_CopyBlobArray((BlobArray *)&msg->info.cCertEncoded,
1167              (const BlobArray *)&info->cCertEncoded);
1168         if (ret)
1169             ret = CRYPT_CopyBlobArray((BlobArray *)&msg->info.cCrlEncoded,
1170              (const BlobArray *)&info->cCrlEncoded);
1171         if (!ret)
1172         {
1173             CSignedEncodeMsg_Close(msg);
1174             msg = NULL;
1175         }
1176     }
1177     return msg;
1178 }
1179
1180 static inline const char *MSG_TYPE_STR(DWORD type)
1181 {
1182     switch (type)
1183     {
1184 #define _x(x) case (x): return #x
1185         _x(CMSG_DATA);
1186         _x(CMSG_SIGNED);
1187         _x(CMSG_ENVELOPED);
1188         _x(CMSG_SIGNED_AND_ENVELOPED);
1189         _x(CMSG_HASHED);
1190         _x(CMSG_ENCRYPTED);
1191 #undef _x
1192         default:
1193             return wine_dbg_sprintf("unknown (%d)", type);
1194     }
1195 }
1196
1197 HCRYPTMSG WINAPI CryptMsgOpenToEncode(DWORD dwMsgEncodingType, DWORD dwFlags,
1198  DWORD dwMsgType, const void *pvMsgEncodeInfo, LPSTR pszInnerContentObjID,
1199  PCMSG_STREAM_INFO pStreamInfo)
1200 {
1201     HCRYPTMSG msg = NULL;
1202
1203     TRACE("(%08x, %08x, %08x, %p, %s, %p)\n", dwMsgEncodingType, dwFlags,
1204      dwMsgType, pvMsgEncodeInfo, debugstr_a(pszInnerContentObjID), pStreamInfo);
1205
1206     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
1207     {
1208         SetLastError(E_INVALIDARG);
1209         return NULL;
1210     }
1211     switch (dwMsgType)
1212     {
1213     case CMSG_DATA:
1214         msg = CDataEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1215          pszInnerContentObjID, pStreamInfo);
1216         break;
1217     case CMSG_HASHED:
1218         msg = CHashEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1219          pszInnerContentObjID, pStreamInfo);
1220         break;
1221     case CMSG_SIGNED:
1222         msg = CSignedEncodeMsg_Open(dwFlags, pvMsgEncodeInfo,
1223          pszInnerContentObjID, pStreamInfo);
1224         break;
1225     case CMSG_ENVELOPED:
1226         FIXME("unimplemented for type %s\n", MSG_TYPE_STR(dwMsgType));
1227         break;
1228     case CMSG_SIGNED_AND_ENVELOPED:
1229     case CMSG_ENCRYPTED:
1230         /* defined but invalid, fall through */
1231     default:
1232         SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1233     }
1234     return msg;
1235 }
1236
1237 typedef struct _CDecodeMsg
1238 {
1239     CryptMsgBase           base;
1240     DWORD                  type;
1241     HCRYPTPROV             crypt_prov;
1242     union {
1243         HCRYPTHASH             hash;
1244         CRYPT_SIGNED_INFO     *signedInfo;
1245     } u;
1246     CRYPT_DATA_BLOB        msg_data;
1247     PCONTEXT_PROPERTY_LIST properties;
1248 } CDecodeMsg;
1249
1250 static void CDecodeMsg_Close(HCRYPTMSG hCryptMsg)
1251 {
1252     CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
1253
1254     if (msg->base.open_flags & CMSG_CRYPT_RELEASE_CONTEXT_FLAG)
1255         CryptReleaseContext(msg->crypt_prov, 0);
1256     switch (msg->type)
1257     {
1258     case CMSG_HASHED:
1259         CryptDestroyHash(msg->u.hash);
1260         break;
1261     case CMSG_SIGNED:
1262         LocalFree(msg->u.signedInfo);
1263         break;
1264     }
1265     CryptMemFree(msg->msg_data.pbData);
1266     ContextPropertyList_Free(msg->properties);
1267 }
1268
1269 static BOOL CDecodeMsg_CopyData(CDecodeMsg *msg, const BYTE *pbData,
1270  DWORD cbData)
1271 {
1272     BOOL ret = TRUE;
1273
1274     if (cbData)
1275     {
1276         if (msg->msg_data.cbData)
1277             msg->msg_data.pbData = CryptMemRealloc(msg->msg_data.pbData,
1278              msg->msg_data.cbData + cbData);
1279         else
1280             msg->msg_data.pbData = CryptMemAlloc(cbData);
1281         if (msg->msg_data.pbData)
1282         {
1283             memcpy(msg->msg_data.pbData + msg->msg_data.cbData, pbData, cbData);
1284             msg->msg_data.cbData += cbData;
1285         }
1286         else
1287             ret = FALSE;
1288     }
1289     return ret;
1290 }
1291
1292 static BOOL CDecodeMsg_DecodeDataContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob)
1293 {
1294     BOOL ret;
1295     CRYPT_DATA_BLOB *data;
1296     DWORD size;
1297
1298     ret = CryptDecodeObjectEx(X509_ASN_ENCODING, X509_OCTET_STRING,
1299      blob->pbData, blob->cbData, CRYPT_DECODE_ALLOC_FLAG, NULL, (LPBYTE)&data,
1300      &size);
1301     if (ret)
1302     {
1303         ret = ContextPropertyList_SetProperty(msg->properties,
1304          CMSG_CONTENT_PARAM, data->pbData, data->cbData);
1305         LocalFree(data);
1306     }
1307     return ret;
1308 }
1309
1310 static void CDecodeMsg_SaveAlgorithmID(CDecodeMsg *msg, DWORD param,
1311  const CRYPT_ALGORITHM_IDENTIFIER *id)
1312 {
1313     static const BYTE nullParams[] = { ASN_NULL, 0 };
1314     CRYPT_ALGORITHM_IDENTIFIER *copy;
1315     DWORD len = sizeof(CRYPT_ALGORITHM_IDENTIFIER);
1316
1317     /* Linearize algorithm id */
1318     len += strlen(id->pszObjId) + 1;
1319     len += id->Parameters.cbData;
1320     copy = CryptMemAlloc(len);
1321     if (copy)
1322     {
1323         copy->pszObjId =
1324          (LPSTR)((BYTE *)copy + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1325         strcpy(copy->pszObjId, id->pszObjId);
1326         copy->Parameters.pbData = (BYTE *)copy->pszObjId + strlen(id->pszObjId)
1327          + 1;
1328         /* Trick:  omit NULL parameters */
1329         if (id->Parameters.cbData == sizeof(nullParams) &&
1330          !memcmp(id->Parameters.pbData, nullParams, sizeof(nullParams)))
1331         {
1332             copy->Parameters.cbData = 0;
1333             len -= sizeof(nullParams);
1334         }
1335         else
1336             copy->Parameters.cbData = id->Parameters.cbData;
1337         if (copy->Parameters.cbData)
1338             memcpy(copy->Parameters.pbData, id->Parameters.pbData,
1339              id->Parameters.cbData);
1340         ContextPropertyList_SetProperty(msg->properties, param, (BYTE *)copy,
1341          len);
1342         CryptMemFree(copy);
1343     }
1344 }
1345
1346 static inline void CRYPT_FixUpAlgorithmID(CRYPT_ALGORITHM_IDENTIFIER *id)
1347 {
1348     id->pszObjId = (LPSTR)((BYTE *)id + sizeof(CRYPT_ALGORITHM_IDENTIFIER));
1349     id->Parameters.pbData = (BYTE *)id->pszObjId + strlen(id->pszObjId) + 1;
1350 }
1351
1352 static BOOL CDecodeMsg_DecodeHashedContent(CDecodeMsg *msg,
1353  CRYPT_DER_BLOB *blob)
1354 {
1355     BOOL ret;
1356     CRYPT_DIGESTED_DATA *digestedData;
1357     DWORD size;
1358
1359     ret = CRYPT_AsnDecodePKCSDigestedData(blob->pbData, blob->cbData,
1360      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_DIGESTED_DATA *)&digestedData,
1361      &size);
1362     if (ret)
1363     {
1364         ContextPropertyList_SetProperty(msg->properties, CMSG_VERSION_PARAM,
1365          (const BYTE *)&digestedData->version, sizeof(digestedData->version));
1366         CDecodeMsg_SaveAlgorithmID(msg, CMSG_HASH_ALGORITHM_PARAM,
1367          &digestedData->DigestAlgorithm);
1368         ContextPropertyList_SetProperty(msg->properties,
1369          CMSG_INNER_CONTENT_TYPE_PARAM,
1370          (const BYTE *)digestedData->ContentInfo.pszObjId,
1371          digestedData->ContentInfo.pszObjId ?
1372          strlen(digestedData->ContentInfo.pszObjId) + 1 : 0);
1373         if (digestedData->ContentInfo.Content.cbData)
1374             CDecodeMsg_DecodeDataContent(msg,
1375              &digestedData->ContentInfo.Content);
1376         else
1377             ContextPropertyList_SetProperty(msg->properties,
1378              CMSG_CONTENT_PARAM, NULL, 0);
1379         ContextPropertyList_SetProperty(msg->properties, CMSG_HASH_DATA_PARAM,
1380          digestedData->hash.pbData, digestedData->hash.cbData);
1381         LocalFree(digestedData);
1382     }
1383     return ret;
1384 }
1385
1386 static BOOL CDecodeMsg_DecodeSignedContent(CDecodeMsg *msg,
1387  CRYPT_DER_BLOB *blob)
1388 {
1389     BOOL ret;
1390     CRYPT_SIGNED_INFO *signedInfo;
1391     DWORD size;
1392
1393     ret = CRYPT_AsnDecodePKCSSignedInfo(blob->pbData, blob->cbData,
1394      CRYPT_DECODE_ALLOC_FLAG, NULL, (CRYPT_SIGNED_INFO *)&signedInfo,
1395      &size);
1396     if (ret)
1397         msg->u.signedInfo = signedInfo;
1398     return ret;
1399 }
1400 /* Decodes the content in blob as the type given, and updates the value
1401  * (type, parameters, etc.) of msg based on what blob contains.
1402  * It doesn't just use msg's type, to allow a recursive call from an implicitly
1403  * typed message once the outer content info has been decoded.
1404  */
1405 static BOOL CDecodeMsg_DecodeContent(CDecodeMsg *msg, CRYPT_DER_BLOB *blob,
1406  DWORD type)
1407 {
1408     BOOL ret;
1409
1410     switch (type)
1411     {
1412     case CMSG_DATA:
1413         if ((ret = CDecodeMsg_DecodeDataContent(msg, blob)))
1414             msg->type = CMSG_DATA;
1415         break;
1416     case CMSG_HASHED:
1417         if ((ret = CDecodeMsg_DecodeHashedContent(msg, blob)))
1418             msg->type = CMSG_HASHED;
1419         break;
1420     case CMSG_ENVELOPED:
1421         FIXME("unimplemented for type %s\n", MSG_TYPE_STR(type));
1422         ret = TRUE;
1423         break;
1424     case CMSG_SIGNED:
1425         if ((ret = CDecodeMsg_DecodeSignedContent(msg, blob)))
1426             msg->type = CMSG_SIGNED;
1427         break;
1428     default:
1429     {
1430         CRYPT_CONTENT_INFO *info;
1431         DWORD size;
1432
1433         ret = CryptDecodeObjectEx(X509_ASN_ENCODING, PKCS_CONTENT_INFO,
1434          msg->msg_data.pbData, msg->msg_data.cbData, CRYPT_DECODE_ALLOC_FLAG,
1435          NULL, (LPBYTE)&info, &size);
1436         if (ret)
1437         {
1438             if (!strcmp(info->pszObjId, szOID_RSA_data))
1439                 ret = CDecodeMsg_DecodeContent(msg, &info->Content, CMSG_DATA);
1440             else if (!strcmp(info->pszObjId, szOID_RSA_digestedData))
1441                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1442                  CMSG_HASHED);
1443             else if (!strcmp(info->pszObjId, szOID_RSA_envelopedData))
1444                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1445                  CMSG_ENVELOPED);
1446             else if (!strcmp(info->pszObjId, szOID_RSA_signedData))
1447                 ret = CDecodeMsg_DecodeContent(msg, &info->Content,
1448                  CMSG_SIGNED);
1449             else
1450             {
1451                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1452                 ret = FALSE;
1453             }
1454             LocalFree(info);
1455         }
1456     }
1457     }
1458     return ret;
1459 }
1460
1461 static BOOL CDecodeMsg_Update(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1462  DWORD cbData, BOOL fFinal)
1463 {
1464     CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
1465     BOOL ret = FALSE;
1466
1467     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
1468
1469     if (msg->base.streamed)
1470     {
1471         ret = CDecodeMsg_CopyData(msg, pbData, cbData);
1472         FIXME("(%p, %p, %d, %d): streamed update stub\n", hCryptMsg, pbData,
1473          cbData, fFinal);
1474     }
1475     else
1476     {
1477         if (!fFinal)
1478             SetLastError(CRYPT_E_MSG_ERROR);
1479         else
1480         {
1481             ret = CDecodeMsg_CopyData(msg, pbData, cbData);
1482             if (ret)
1483                 ret = CDecodeMsg_DecodeContent(msg, &msg->msg_data, msg->type);
1484
1485         }
1486     }
1487     return ret;
1488 }
1489
1490 static BOOL CDecodeHashMsg_GetParam(CDecodeMsg *msg, DWORD dwParamType,
1491  DWORD dwIndex, void *pvData, DWORD *pcbData)
1492 {
1493     BOOL ret = FALSE;
1494
1495     switch (dwParamType)
1496     {
1497     case CMSG_TYPE_PARAM:
1498         ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&msg->type,
1499          sizeof(msg->type));
1500         break;
1501     case CMSG_HASH_ALGORITHM_PARAM:
1502     {
1503         CRYPT_DATA_BLOB blob;
1504
1505         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
1506          &blob);
1507         if (ret)
1508         {
1509             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
1510             if (ret && pvData)
1511                 CRYPT_FixUpAlgorithmID((CRYPT_ALGORITHM_IDENTIFIER *)pvData);
1512         }
1513         else
1514             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1515         break;
1516     }
1517     case CMSG_COMPUTED_HASH_PARAM:
1518         if (!msg->u.hash)
1519         {
1520             CRYPT_ALGORITHM_IDENTIFIER *hashAlgoID = NULL;
1521             DWORD size = 0;
1522             ALG_ID algID = 0;
1523
1524             CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0, NULL, &size);
1525             hashAlgoID = CryptMemAlloc(size);
1526             ret = CryptMsgGetParam(msg, CMSG_HASH_ALGORITHM_PARAM, 0,
1527              hashAlgoID, &size);
1528             if (ret)
1529                 algID = CertOIDToAlgId(hashAlgoID->pszObjId);
1530             ret = CryptCreateHash(msg->crypt_prov, algID, 0, 0, &msg->u.hash);
1531             if (ret)
1532             {
1533                 CRYPT_DATA_BLOB content;
1534
1535                 ret = ContextPropertyList_FindProperty(msg->properties,
1536                  CMSG_CONTENT_PARAM, &content);
1537                 if (ret)
1538                     ret = CryptHashData(msg->u.hash, content.pbData,
1539                      content.cbData, 0);
1540             }
1541             CryptMemFree(hashAlgoID);
1542         }
1543         else
1544             ret = TRUE;
1545         if (ret)
1546             ret = CryptGetHashParam(msg->u.hash, HP_HASHVAL, pvData, pcbData,
1547              0);
1548         break;
1549     default:
1550     {
1551         CRYPT_DATA_BLOB blob;
1552
1553         ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
1554          &blob);
1555         if (ret)
1556             ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData, blob.cbData);
1557         else
1558             SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1559     }
1560     }
1561     return ret;
1562 }
1563
1564 static BOOL CDecodeMsg_GetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1565  DWORD dwIndex, void *pvData, DWORD *pcbData)
1566 {
1567     CDecodeMsg *msg = (CDecodeMsg *)hCryptMsg;
1568     BOOL ret = FALSE;
1569
1570     switch (msg->type)
1571     {
1572     case CMSG_HASHED:
1573         ret = CDecodeHashMsg_GetParam(msg, dwParamType, dwIndex, pvData,
1574          pcbData);
1575         break;
1576     default:
1577         switch (dwParamType)
1578         {
1579         case CMSG_TYPE_PARAM:
1580             ret = CRYPT_CopyParam(pvData, pcbData, (const BYTE *)&msg->type,
1581              sizeof(msg->type));
1582             break;
1583         default:
1584         {
1585             CRYPT_DATA_BLOB blob;
1586
1587             ret = ContextPropertyList_FindProperty(msg->properties, dwParamType,
1588              &blob);
1589             if (ret)
1590                 ret = CRYPT_CopyParam(pvData, pcbData, blob.pbData,
1591                  blob.cbData);
1592             else
1593                 SetLastError(CRYPT_E_INVALID_MSG_TYPE);
1594         }
1595         }
1596     }
1597     return ret;
1598 }
1599
1600 HCRYPTMSG WINAPI CryptMsgOpenToDecode(DWORD dwMsgEncodingType, DWORD dwFlags,
1601  DWORD dwMsgType, HCRYPTPROV hCryptProv, PCERT_INFO pRecipientInfo,
1602  PCMSG_STREAM_INFO pStreamInfo)
1603 {
1604     CDecodeMsg *msg;
1605
1606     TRACE("(%08x, %08x, %08x, %08lx, %p, %p)\n", dwMsgEncodingType,
1607      dwFlags, dwMsgType, hCryptProv, pRecipientInfo, pStreamInfo);
1608
1609     if (GET_CMSG_ENCODING_TYPE(dwMsgEncodingType) != PKCS_7_ASN_ENCODING)
1610     {
1611         SetLastError(E_INVALIDARG);
1612         return NULL;
1613     }
1614     msg = CryptMemAlloc(sizeof(CDecodeMsg));
1615     if (msg)
1616     {
1617         CryptMsgBase_Init((CryptMsgBase *)msg, dwFlags, pStreamInfo,
1618          CDecodeMsg_Close, CDecodeMsg_GetParam, CDecodeMsg_Update);
1619         msg->type = dwMsgType;
1620         if (hCryptProv)
1621             msg->crypt_prov = hCryptProv;
1622         else
1623         {
1624             msg->crypt_prov = CRYPT_GetDefaultProvider();
1625             msg->base.open_flags &= ~CMSG_CRYPT_RELEASE_CONTEXT_FLAG;
1626         }
1627         memset(&msg->u, 0, sizeof(msg->u));
1628         msg->msg_data.cbData = 0;
1629         msg->msg_data.pbData = NULL;
1630         msg->properties = ContextPropertyList_Create();
1631     }
1632     return msg;
1633 }
1634
1635 HCRYPTMSG WINAPI CryptMsgDuplicate(HCRYPTMSG hCryptMsg)
1636 {
1637     TRACE("(%p)\n", hCryptMsg);
1638
1639     if (hCryptMsg)
1640     {
1641         CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
1642
1643         InterlockedIncrement(&msg->ref);
1644     }
1645     return hCryptMsg;
1646 }
1647
1648 BOOL WINAPI CryptMsgClose(HCRYPTMSG hCryptMsg)
1649 {
1650     TRACE("(%p)\n", hCryptMsg);
1651
1652     if (hCryptMsg)
1653     {
1654         CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
1655
1656         if (InterlockedDecrement(&msg->ref) == 0)
1657         {
1658             TRACE("freeing %p\n", msg);
1659             if (msg->close)
1660                 msg->close(msg);
1661             CryptMemFree(msg);
1662         }
1663     }
1664     return TRUE;
1665 }
1666
1667 BOOL WINAPI CryptMsgUpdate(HCRYPTMSG hCryptMsg, const BYTE *pbData,
1668  DWORD cbData, BOOL fFinal)
1669 {
1670     CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
1671     BOOL ret = FALSE;
1672
1673     TRACE("(%p, %p, %d, %d)\n", hCryptMsg, pbData, cbData, fFinal);
1674
1675     if (msg->state == MsgStateFinalized)
1676         SetLastError(CRYPT_E_MSG_ERROR);
1677     else
1678     {
1679         ret = msg->update(hCryptMsg, pbData, cbData, fFinal);
1680         msg->state = MsgStateUpdated;
1681         if (fFinal)
1682             msg->state = MsgStateFinalized;
1683     }
1684     return ret;
1685 }
1686
1687 BOOL WINAPI CryptMsgGetParam(HCRYPTMSG hCryptMsg, DWORD dwParamType,
1688  DWORD dwIndex, void *pvData, DWORD *pcbData)
1689 {
1690     CryptMsgBase *msg = (CryptMsgBase *)hCryptMsg;
1691
1692     TRACE("(%p, %d, %d, %p, %p)\n", hCryptMsg, dwParamType, dwIndex,
1693      pvData, pcbData);
1694     return msg->get_param(hCryptMsg, dwParamType, dwIndex, pvData, pcbData);
1695 }