dlls/wintrust/wintrust_main.c

   1 /*
   2  * Copyright 2001 Rein Klazes
   3  * Copyright 2007 Juan Lang
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "config.h"
  21
  22 #include <stdarg.h>
  23
  24 #define NONAMELESSUNION
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "winerror.h"
  29 #include "winreg.h"
  30 #include "guiddef.h"
  31 #include "wintrust.h"
  32 #include "softpub.h"
  33 #include "mscat.h"
  34 #include "objbase.h"
  35 #include "winuser.h"
  36 #include "wintrust_priv.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(wintrust);
  40
  41
  42 /***********************************************************************
  43  *              DllMain  (WINTRUST.@)
  44  */
  45 BOOL WINAPI DllMain( HINSTANCE inst, DWORD reason, LPVOID reserved )
  46 {
  47     switch(reason)
  48     {
  49     case DLL_PROCESS_ATTACH:
  50         DisableThreadLibraryCalls( inst );
  51         break;
  52     }
  53     return TRUE;
  54 }
  55
  56 /***********************************************************************
  57  *              TrustIsCertificateSelfSigned (WINTRUST.@)
  58  */
  59 BOOL WINAPI TrustIsCertificateSelfSigned( PCCERT_CONTEXT cert )
  60 {
  61     BOOL ret;
  62
  63     TRACE("%p\n", cert);
  64     ret = CertCompareCertificateName(cert->dwCertEncodingType,
  65      &cert->pCertInfo->Subject, &cert->pCertInfo->Issuer);
  66     return ret;
  67 }
  68
  69 static LONG WINTRUST_DefaultVerify(HWND hwnd, GUID *actionID,
  70  WINTRUST_DATA *data)
  71 {
  72     DWORD err = ERROR_SUCCESS;
  73     CRYPT_PROVIDER_DATA *provData;
  74     BOOL ret;
  75
  76     TRACE("(%p, %s, %p)\n", hwnd, debugstr_guid(actionID), data);
  77
  78     provData = WINTRUST_Alloc(sizeof(CRYPT_PROVIDER_DATA));
  79     if (!provData)
  80         goto oom;
  81     provData->cbStruct = sizeof(CRYPT_PROVIDER_DATA);
  82
  83     provData->padwTrustStepErrors =
  84      WINTRUST_Alloc(TRUSTERROR_MAX_STEPS * sizeof(DWORD));
  85     if (!provData->padwTrustStepErrors)
  86         goto oom;
  87     provData->cdwTrustStepErrors = TRUSTERROR_MAX_STEPS;
  88
  89     provData->u.pPDSip = WINTRUST_Alloc(sizeof(PROVDATA_SIP));
  90     if (!provData->u.pPDSip)
  91         goto oom;
  92     provData->u.pPDSip->cbStruct = sizeof(PROVDATA_SIP);
  93
  94     provData->psPfns = WINTRUST_Alloc(sizeof(CRYPT_PROVIDER_FUNCTIONS));
  95     if (!provData->psPfns)
  96         goto oom;
  97     provData->psPfns->cbStruct = sizeof(CRYPT_PROVIDER_FUNCTIONS);
  98     ret = WintrustLoadFunctionPointers(actionID, provData->psPfns);
  99     if (!ret)
 100     {
 101         err = GetLastError();
 102         goto error;
 103     }
 104
 105     data->hWVTStateData = (HANDLE)provData;
 106     provData->pWintrustData = data;
 107     if (hwnd == INVALID_HANDLE_VALUE)
 108         provData->hWndParent = GetDesktopWindow();
 109     else
 110         provData->hWndParent = hwnd;
 111     provData->pgActionID = actionID;
 112     WintrustGetRegPolicyFlags(&provData->dwRegPolicySettings);
 113
 114     err = provData->psPfns->pfnInitialize(provData);
 115     if (err)
 116         goto done;
 117     err = provData->psPfns->pfnObjectTrust(provData);
 118     if (err)
 119         goto done;
 120     err = provData->psPfns->pfnSignatureTrust(provData);
 121     if (err)
 122         goto done;
 123     err = provData->psPfns->pfnCertificateTrust(provData);
 124     if (err)
 125         goto done;
 126     err = provData->psPfns->pfnFinalPolicy(provData);
 127     goto done;
 128
 129 oom:
 130     err = ERROR_OUTOFMEMORY;
 131 error:
 132     if (provData)
 133     {
 134         WINTRUST_Free(provData->padwTrustStepErrors);
 135         WINTRUST_Free(provData->u.pPDSip);
 136         WINTRUST_Free(provData->psPfns);
 137         WINTRUST_Free(provData);
 138     }
 139 done:
 140     TRACE("returning %08x\n", err);
 141     return err;
 142 }
 143
 144 static LONG WINTRUST_DefaultClose(HWND hwnd, GUID *actionID,
 145  WINTRUST_DATA *data)
 146 {
 147     DWORD err = ERROR_SUCCESS;
 148     CRYPT_PROVIDER_DATA *provData = (CRYPT_PROVIDER_DATA *)data->hWVTStateData;
 149
 150     TRACE("(%p, %s, %p)\n", hwnd, debugstr_guid(actionID), data);
 151
 152     if (provData)
 153     {
 154         err = provData->psPfns->pfnCleanupPolicy(provData);
 155         WINTRUST_Free(provData->padwTrustStepErrors);
 156         WINTRUST_Free(provData->u.pPDSip);
 157         WINTRUST_Free(provData->psPfns);
 158         WINTRUST_Free(provData);
 159         data->hWVTStateData = NULL;
 160     }
 161     TRACE("returning %08x\n", err);
 162     return err;
 163 }
 164
 165 static LONG WINTRUST_DefaultVerifyAndClose(HWND hwnd, GUID *actionID,
 166  WINTRUST_DATA *data)
 167 {
 168     LONG err;
 169
 170     TRACE("(%p, %s, %p)\n", hwnd, debugstr_guid(actionID), data);
 171
 172     err = WINTRUST_DefaultVerify(hwnd, actionID, data);
 173     WINTRUST_DefaultClose(hwnd, actionID, data);
 174     TRACE("returning %08x\n", err);
 175     return err;
 176 }
 177
 178 static LONG WINTRUST_PublishedSoftware(HWND hwnd, GUID *actionID,
 179  WINTRUST_DATA *data)
 180 {
 181     WINTRUST_DATA wintrust_data = { sizeof(wintrust_data), 0 };
 182     /* Undocumented: the published software action is passed a path,
 183      * and pSIPClientData points to a WIN_TRUST_SUBJECT_FILE.
 184      */
 185     LPCWSTR path = (LPCWSTR)data->u.pFile;
 186     LPWIN_TRUST_SUBJECT_FILE subjectFile =
 187      (LPWIN_TRUST_SUBJECT_FILE)data->pSIPClientData;
 188     WINTRUST_FILE_INFO fileInfo = { sizeof(fileInfo), 0 };
 189
 190     TRACE("subjectFile->hFile: %p\n", subjectFile->hFile);
 191     TRACE("subjectFile->lpPath: %s\n", debugstr_w(subjectFile->lpPath));
 192     fileInfo.pcwszFilePath = path;
 193     fileInfo.hFile = subjectFile->hFile;
 194     wintrust_data.u.pFile = &fileInfo;
 195     wintrust_data.dwUnionChoice = WTD_CHOICE_FILE;
 196     wintrust_data.dwUIChoice = WTD_UI_NONE;
 197
 198     return WINTRUST_DefaultVerifyAndClose(hwnd, actionID, &wintrust_data);
 199 }
 200
 201 static void dump_file_info(WINTRUST_FILE_INFO *pFile)
 202 {
 203     TRACE("%p\n", pFile);
 204     if (pFile)
 205     {
 206         TRACE("cbStruct: %d\n", pFile->cbStruct);
 207         TRACE("pcwszFilePath: %s\n", debugstr_w(pFile->pcwszFilePath));
 208         TRACE("hFile: %p\n", pFile->hFile);
 209         TRACE("pgKnownSubject: %s\n", debugstr_guid(pFile->pgKnownSubject));
 210     }
 211 }
 212
 213 static void dump_catalog_info(WINTRUST_CATALOG_INFO *catalog)
 214 {
 215     TRACE("%p\n", catalog);
 216     if (catalog)
 217     {
 218         TRACE("cbStruct: %d\n", catalog->cbStruct);
 219         TRACE("dwCatalogVersion: %d\n", catalog->dwCatalogVersion);
 220         TRACE("pcwszCatalogFilePath: %s\n",
 221          debugstr_w(catalog->pcwszCatalogFilePath));
 222         TRACE("pcwszMemberTag: %s\n", debugstr_w(catalog->pcwszMemberTag));
 223         TRACE("pcwszMemberFilePath: %s\n",
 224          debugstr_w(catalog->pcwszMemberFilePath));
 225         TRACE("hMemberFile: %p\n", catalog->hMemberFile);
 226         TRACE("pbCalculatedFileHash: %p\n", catalog->pbCalculatedFileHash);
 227         TRACE("cbCalculatedFileHash: %d\n", catalog->cbCalculatedFileHash);
 228         TRACE("pcCatalogContext: %p\n", catalog->pcCatalogContext);
 229     }
 230 }
 231
 232 static void dump_blob_info(WINTRUST_BLOB_INFO *blob)
 233 {
 234     TRACE("%p\n", blob);
 235     if (blob)
 236     {
 237         TRACE("cbStruct: %d\n", blob->cbStruct);
 238         TRACE("gSubject: %s\n", debugstr_guid(&blob->gSubject));
 239         TRACE("pcwszDisplayName: %s\n", debugstr_w(blob->pcwszDisplayName));
 240         TRACE("cbMemObject: %d\n", blob->cbMemObject);
 241         TRACE("pbMemObject: %p\n", blob->pbMemObject);
 242         TRACE("cbMemSignedMsg: %d\n", blob->cbMemSignedMsg);
 243         TRACE("pbMemSignedMsg: %p\n", blob->pbMemSignedMsg);
 244     }
 245 }
 246
 247 static void dump_sgnr_info(WINTRUST_SGNR_INFO *sgnr)
 248 {
 249     TRACE("%p\n", sgnr);
 250     if (sgnr)
 251     {
 252         TRACE("cbStruct: %d\n", sgnr->cbStruct);
 253         TRACE("pcwszDisplayName: %s\n", debugstr_w(sgnr->pcwszDisplayName));
 254         TRACE("psSignerInfo: %p\n", sgnr->psSignerInfo);
 255         TRACE("chStores: %d\n", sgnr->chStores);
 256     }
 257 }
 258
 259 static void dump_cert_info(WINTRUST_CERT_INFO *cert)
 260 {
 261     TRACE("%p\n", cert);
 262     if (cert)
 263     {
 264         TRACE("cbStruct: %d\n", cert->cbStruct);
 265         TRACE("pcwszDisplayName: %s\n", debugstr_w(cert->pcwszDisplayName));
 266         TRACE("psCertContext: %p\n", cert->psCertContext);
 267         TRACE("chStores: %d\n", cert->chStores);
 268         TRACE("dwFlags: %08x\n", cert->dwFlags);
 269         TRACE("psftVerifyAsOf: %p\n", cert->psftVerifyAsOf);
 270     }
 271 }
 272
 273 static void dump_wintrust_data(WINTRUST_DATA *data)
 274 {
 275     TRACE("%p\n", data);
 276     if (data)
 277     {
 278         TRACE("cbStruct: %d\n", data->cbStruct);
 279         TRACE("pPolicyCallbackData: %p\n", data->pPolicyCallbackData);
 280         TRACE("pSIPClientData: %p\n", data->pSIPClientData);
 281         TRACE("dwUIChoice: %d\n", data->dwUIChoice);
 282         TRACE("fdwRevocationChecks: %08x\n", data->fdwRevocationChecks);
 283         TRACE("dwUnionChoice: %d\n", data->dwUnionChoice);
 284         switch (data->dwUnionChoice)
 285         {
 286         case WTD_CHOICE_FILE:
 287             dump_file_info(data->u.pFile);
 288             break;
 289         case WTD_CHOICE_CATALOG:
 290             dump_catalog_info(data->u.pCatalog);
 291             break;
 292         case WTD_CHOICE_BLOB:
 293             dump_blob_info(data->u.pBlob);
 294             break;
 295         case WTD_CHOICE_SIGNER:
 296             dump_sgnr_info(data->u.pSgnr);
 297             break;
 298         case WTD_CHOICE_CERT:
 299             dump_cert_info(data->u.pCert);
 300             break;
 301         }
 302         TRACE("dwStateAction: %d\n", data->dwStateAction);
 303         TRACE("hWVTStateData: %p\n", data->hWVTStateData);
 304         TRACE("pwszURLReference: %s\n", debugstr_w(data->pwszURLReference));
 305         TRACE("dwProvFlags: %08x\n", data->dwProvFlags);
 306         TRACE("dwUIContext: %d\n", data->dwUIContext);
 307     }
 308 }
 309
 310 /***********************************************************************
 311  *              WinVerifyTrust (WINTRUST.@)
 312  *
 313  * Verifies an object by calling the specified trust provider.
 314  *
 315  * PARAMS
 316  *   hwnd       [I] Handle to a caller window.
 317  *   ActionID   [I] Pointer to a GUID that identifies the action to perform.
 318  *   ActionData [I] Information used by the trust provider to verify the object.
 319  *
 320  * RETURNS
 321  *   Success: Zero.
 322  *   Failure: A TRUST_E_* error code.
 323  *
 324  * NOTES
 325  *   Trust providers can be found at:
 326  *   HKLM\SOFTWARE\Microsoft\Cryptography\Providers\Trust\
 327  */
 328 LONG WINAPI WinVerifyTrust( HWND hwnd, GUID *ActionID, LPVOID ActionData )
 329 {
 330     static const GUID unknown = { 0xC689AAB8, 0x8E78, 0x11D0, { 0x8C,0x47,
 331      0x00,0xC0,0x4F,0xC2,0x95,0xEE } };
 332     static const GUID published_software = WIN_SPUB_ACTION_PUBLISHED_SOFTWARE;
 333     static const GUID generic_verify_v2 = WINTRUST_ACTION_GENERIC_VERIFY_V2;
 334     static const GUID generic_cert_verify = WINTRUST_ACTION_GENERIC_CERT_VERIFY;
 335     static const GUID generic_chain_verify = WINTRUST_ACTION_GENERIC_CHAIN_VERIFY;
 336     LONG err = ERROR_SUCCESS;
 337     WINTRUST_DATA *actionData = (WINTRUST_DATA *)ActionData;
 338
 339     TRACE("(%p, %s, %p)\n", hwnd, debugstr_guid(ActionID), ActionData);
 340     dump_wintrust_data(ActionData);
 341
 342     /* Support for known old-style callers: */
 343     if (IsEqualGUID(ActionID, &published_software))
 344         err = WINTRUST_PublishedSoftware(hwnd, ActionID, ActionData);
 345     else
 346     {
 347         /* Check known actions to warn of possible problems */
 348         if (!IsEqualGUID(ActionID, &unknown) &&
 349          !IsEqualGUID(ActionID, &generic_verify_v2) &&
 350          !IsEqualGUID(ActionID, &generic_cert_verify) &&
 351          !IsEqualGUID(ActionID, &generic_chain_verify))
 352             WARN("unknown action %s, default behavior may not be right\n",
 353              debugstr_guid(ActionID));
 354         switch (actionData->dwStateAction)
 355         {
 356         case WTD_STATEACTION_IGNORE:
 357             err = WINTRUST_DefaultVerifyAndClose(hwnd, ActionID, ActionData);
 358             break;
 359         case WTD_STATEACTION_VERIFY:
 360             err = WINTRUST_DefaultVerify(hwnd, ActionID, ActionData);
 361             break;
 362         case WTD_STATEACTION_CLOSE:
 363             err = WINTRUST_DefaultClose(hwnd, ActionID, ActionData);
 364             break;
 365         default:
 366             FIXME("unimplemented for %d\n", actionData->dwStateAction);
 367         }
 368     }
 369
 370     TRACE("returning %08x\n", err);
 371     return err;
 372 }
 373
 374 /***********************************************************************
 375  *              WinVerifyTrustEx (WINTRUST.@)
 376  */
 377 HRESULT WINAPI WinVerifyTrustEx( HWND hwnd, GUID *ActionID,
 378  WINTRUST_DATA* ActionData )
 379 {
 380     return WinVerifyTrust(hwnd, ActionID, ActionData);
 381 }
 382
 383 /***********************************************************************
 384  *              WTHelperGetProvSignerFromChain (WINTRUST.@)
 385  */
 386 CRYPT_PROVIDER_SGNR * WINAPI WTHelperGetProvSignerFromChain(
 387  CRYPT_PROVIDER_DATA *pProvData, DWORD idxSigner, BOOL fCounterSigner,
 388  DWORD idxCounterSigner)
 389 {
 390     CRYPT_PROVIDER_SGNR *sgnr;
 391
 392     TRACE("(%p %d %d %d)\n", pProvData, idxSigner, fCounterSigner,
 393      idxCounterSigner);
 394
 395     if (idxSigner >= pProvData->csSigners || !pProvData->pasSigners)
 396         return NULL;
 397     sgnr = &pProvData->pasSigners[idxSigner];
 398     if (fCounterSigner)
 399     {
 400         if (idxCounterSigner >= sgnr->csCounterSigners ||
 401          !sgnr->pasCounterSigners)
 402             return NULL;
 403         sgnr = &sgnr->pasCounterSigners[idxCounterSigner];
 404     }
 405     TRACE("returning %p\n", sgnr);
 406     return sgnr;
 407 }
 408
 409 /***********************************************************************
 410  *              WTHelperGetProvCertFromChain (WINTRUST.@)
 411  */
 412 CRYPT_PROVIDER_CERT * WINAPI WTHelperGetProvCertFromChain(
 413  CRYPT_PROVIDER_SGNR *pSgnr, DWORD idxCert)
 414 {
 415     CRYPT_PROVIDER_CERT *cert;
 416
 417     TRACE("(%p %d)\n", pSgnr, idxCert);
 418
 419     if (idxCert >= pSgnr->csCertChain || !pSgnr->pasCertChain)
 420         return NULL;
 421     cert = &pSgnr->pasCertChain[idxCert];
 422     TRACE("returning %p\n", cert);
 423     return cert;
 424 }
 425
 426 /***********************************************************************
 427  *              WTHelperProvDataFromStateData (WINTRUST.@)
 428  */
 429 CRYPT_PROVIDER_DATA * WINAPI WTHelperProvDataFromStateData(HANDLE hStateData)
 430 {
 431     TRACE("%p\n", hStateData);
 432     return (CRYPT_PROVIDER_DATA *)hStateData;
 433 }
 434
 435 static const WCHAR Software_Publishing[] = {
 436  'S','o','f','t','w','a','r','e','\\',
 437  'M','i','c','r','o','s','o','f','t','\\',
 438  'W','i','n','d','o','w','s','\\',
 439  'C','u','r','r','e','n','t','V','e','r','s','i','o','n','\\',
 440  'W','i','n','t','r','u','s','t','\\',
 441  'T','r','u','s','t',' ','P','r','o','v','i','d','e','r','s','\\',
 442  'S','o','f','t','w','a','r','e',' ',
 443  'P','u','b','l','i','s','h','i','n','g',0 };
 444 static const WCHAR State[] = { 'S','t','a','t','e',0 };
 445
 446 /***********************************************************************
 447  *              WintrustGetRegPolicyFlags (WINTRUST.@)
 448  */
 449 void WINAPI WintrustGetRegPolicyFlags( DWORD* pdwPolicyFlags )
 450 {
 451     HKEY key;
 452     LONG r;
 453
 454     TRACE("%p\n", pdwPolicyFlags);
 455
 456     *pdwPolicyFlags = 0;
 457     r = RegCreateKeyExW(HKEY_CURRENT_USER, Software_Publishing, 0, NULL, 0,
 458      KEY_READ, NULL, &key, NULL);
 459     if (!r)
 460     {
 461         DWORD size = sizeof(DWORD);
 462
 463         r = RegQueryValueExW(key, State, NULL, NULL, (LPBYTE)pdwPolicyFlags,
 464          &size);
 465         RegCloseKey(key);
 466         if (r)
 467         {
 468             /* Failed to query, create and return default value */
 469             *pdwPolicyFlags = WTPF_IGNOREREVOCATIONONTS |
 470              WTPF_OFFLINEOKNBU_COM |
 471              WTPF_OFFLINEOKNBU_IND |
 472              WTPF_OFFLINEOK_COM |
 473              WTPF_OFFLINEOK_IND;
 474             WintrustSetRegPolicyFlags(*pdwPolicyFlags);
 475         }
 476     }
 477 }
 478
 479 /***********************************************************************
 480  *              WintrustSetRegPolicyFlags (WINTRUST.@)
 481  */
 482 BOOL WINAPI WintrustSetRegPolicyFlags( DWORD dwPolicyFlags)
 483 {
 484     HKEY key;
 485     LONG r;
 486
 487     TRACE("%x\n", dwPolicyFlags);
 488
 489     r = RegCreateKeyExW(HKEY_CURRENT_USER, Software_Publishing, 0,
 490      NULL, 0, KEY_WRITE, NULL, &key, NULL);
 491     if (!r)
 492     {
 493         r = RegSetValueExW(key, State, 0, REG_DWORD, (LPBYTE)&dwPolicyFlags,
 494          sizeof(DWORD));
 495         RegCloseKey(key);
 496     }
 497     if (r) SetLastError(r);
 498     return r == ERROR_SUCCESS;
 499 }
 500
 501 /* Utility functions */
 502 void * WINAPI WINTRUST_Alloc(DWORD cb)
 503 {
 504     return HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cb);
 505 }
 506
 507 void * WINAPI WINTRUST_ReAlloc(void *ptr, DWORD cb)
 508 {
 509     return HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ptr, cb);
 510 }
 511
 512 void WINAPI WINTRUST_Free(void *p)
 513 {
 514     HeapFree(GetProcessHeap(), 0, p);
 515 }
 516
 517 BOOL WINAPI WINTRUST_AddStore(CRYPT_PROVIDER_DATA *data, HCERTSTORE store)
 518 {
 519     BOOL ret = FALSE;
 520
 521     if (data->chStores)
 522         data->pahStores = WINTRUST_ReAlloc(data->pahStores,
 523          (data->chStores + 1) * sizeof(HCERTSTORE));
 524     else
 525     {
 526         data->pahStores = WINTRUST_Alloc(sizeof(HCERTSTORE));
 527         data->chStores = 0;
 528     }
 529     if (data->pahStores)
 530     {
 531         data->pahStores[data->chStores++] = CertDuplicateStore(store);
 532         ret = TRUE;
 533     }
 534     else
 535         SetLastError(ERROR_OUTOFMEMORY);
 536     return ret;
 537 }
 538
 539 BOOL WINAPI WINTRUST_AddSgnr(CRYPT_PROVIDER_DATA *data,
 540  BOOL fCounterSigner, DWORD idxSigner, CRYPT_PROVIDER_SGNR *sgnr)
 541 {
 542     BOOL ret = FALSE;
 543
 544     if (sgnr->cbStruct > sizeof(CRYPT_PROVIDER_SGNR))
 545     {
 546         SetLastError(ERROR_INVALID_PARAMETER);
 547         return FALSE;
 548     }
 549     if (fCounterSigner)
 550     {
 551         FIXME("unimplemented for counter signers\n");
 552         SetLastError(ERROR_INVALID_PARAMETER);
 553         return FALSE;
 554     }
 555     if (data->csSigners)
 556         data->pasSigners = WINTRUST_ReAlloc(data->pasSigners,
 557          (data->csSigners + 1) * sizeof(CRYPT_PROVIDER_SGNR));
 558     else
 559     {
 560         data->pasSigners = WINTRUST_Alloc(sizeof(CRYPT_PROVIDER_SGNR));
 561         data->csSigners = 0;
 562     }
 563     if (data->pasSigners)
 564     {
 565         if (idxSigner < data->csSigners)
 566             memmove(&data->pasSigners[idxSigner],
 567              &data->pasSigners[idxSigner + 1],
 568              (data->csSigners - idxSigner) * sizeof(CRYPT_PROVIDER_SGNR));
 569         ret = TRUE;
 570         if (sgnr->cbStruct == sizeof(CRYPT_PROVIDER_SGNR))
 571         {
 572             /* The PSDK says psSigner should be allocated using pfnAlloc, but
 573              * it doesn't say anything about ownership.  Since callers are
 574              * internal, assume ownership is passed, and just store the
 575              * pointer.
 576              */
 577             memcpy(&data->pasSigners[idxSigner], sgnr,
 578              sizeof(CRYPT_PROVIDER_SGNR));
 579         }
 580         else
 581             memset(&data->pasSigners[idxSigner], 0,
 582              sizeof(CRYPT_PROVIDER_SGNR));
 583         data->csSigners++;
 584     }
 585     else
 586         SetLastError(ERROR_OUTOFMEMORY);
 587     return ret;
 588 }
 589
 590 BOOL WINAPI WINTRUST_AddCert(CRYPT_PROVIDER_DATA *data, DWORD idxSigner,
 591  BOOL fCounterSigner, DWORD idxCounterSigner, PCCERT_CONTEXT pCert2Add)
 592 {
 593     BOOL ret = FALSE;
 594
 595     if (fCounterSigner)
 596     {
 597         FIXME("unimplemented for counter signers\n");
 598         SetLastError(ERROR_INVALID_PARAMETER);
 599         return FALSE;
 600     }
 601     if (data->pasSigners[idxSigner].csCertChain)
 602         data->pasSigners[idxSigner].pasCertChain =
 603          WINTRUST_ReAlloc(data->pasSigners[idxSigner].pasCertChain,
 604          (data->pasSigners[idxSigner].csCertChain + 1) *
 605          sizeof(CRYPT_PROVIDER_CERT));
 606     else
 607     {
 608         data->pasSigners[idxSigner].pasCertChain =
 609          WINTRUST_Alloc(sizeof(CRYPT_PROVIDER_CERT));
 610         data->pasSigners[idxSigner].csCertChain = 0;
 611     }
 612     if (data->pasSigners[idxSigner].pasCertChain)
 613     {
 614         CRYPT_PROVIDER_CERT *cert = &data->pasSigners[idxSigner].pasCertChain[
 615          data->pasSigners[idxSigner].csCertChain];
 616
 617         cert->cbStruct = sizeof(CRYPT_PROVIDER_CERT);
 618         cert->pCert = CertDuplicateCertificateContext(pCert2Add);
 619         data->pasSigners[idxSigner].csCertChain++;
 620         ret = TRUE;
 621     }
 622     else
 623         SetLastError(ERROR_OUTOFMEMORY);
 624     return ret;
 625 }