/* * Copyright 2008 Maarten Lankhorst * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA */ #define NONAMELESSUNION #include "config.h" #include #include "windef.h" #include "winbase.h" #include "winnls.h" #include "winreg.h" #include "wincrypt.h" #include "wintrust.h" #include "winuser.h" #include "cryptdlg.h" #include "cryptuiapi.h" #include "wine/debug.h" WINE_DEFAULT_DEBUG_CHANNEL(cryptdlg); BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved) { TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved); switch (fdwReason) { case DLL_WINE_PREATTACH: return FALSE; /* prefer native version */ case DLL_PROCESS_ATTACH: DisableThreadLibraryCalls(hinstDLL); break; case DLL_PROCESS_DETACH: break; default: break; } return TRUE; } /*********************************************************************** * GetFriendlyNameOfCertA (CRYPTDLG.@) */ DWORD WINAPI GetFriendlyNameOfCertA(PCCERT_CONTEXT pccert, LPSTR pchBuffer, DWORD cchBuffer) { return CertGetNameStringA(pccert, CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, pchBuffer, cchBuffer); } /*********************************************************************** * GetFriendlyNameOfCertW (CRYPTDLG.@) */ DWORD WINAPI GetFriendlyNameOfCertW(PCCERT_CONTEXT pccert, LPWSTR pchBuffer, DWORD cchBuffer) { return CertGetNameStringW(pccert, CERT_NAME_FRIENDLY_DISPLAY_TYPE, 0, NULL, pchBuffer, cchBuffer); } /*********************************************************************** * CertTrustInit (CRYPTDLG.@) */ HRESULT WINAPI CertTrustInit(CRYPT_PROVIDER_DATA *pProvData) { HRESULT ret = S_FALSE; TRACE("(%p)\n", pProvData); if (pProvData->padwTrustStepErrors && !pProvData->padwTrustStepErrors[TRUSTERROR_STEP_FINAL_WVTINIT]) ret = S_OK; TRACE("returning %08x\n", ret); return ret; } /*********************************************************************** * CertTrustCertPolicy (CRYPTDLG.@) */ BOOL WINAPI CertTrustCertPolicy(CRYPT_PROVIDER_DATA *pProvData, DWORD idxSigner, BOOL fCounterSignerChain, DWORD idxCounterSigner) { FIXME("(%p, %d, %s, %d)\n", pProvData, idxSigner, fCounterSignerChain ? "TRUE" : "FALSE", idxCounterSigner); return FALSE; } /*********************************************************************** * CertTrustCleanup (CRYPTDLG.@) */ HRESULT WINAPI CertTrustCleanup(CRYPT_PROVIDER_DATA *pProvData) { FIXME("(%p)\n", pProvData); return E_NOTIMPL; } static BOOL CRYPTDLG_CheckOnlineCRL(void) { static const WCHAR policyFlagsKey[] = { 'S','o','f','t','w','a','r','e', '\\','M','i','c','r','o','s','o','f','t','\\','C','r','y','p','t','o','g', 'r','a','p','h','y','\\','{','7','8','0','1','e','b','d','0','-','c','f', '4','b','-','1','1','d','0','-','8','5','1','f','-','0','0','6','0','9', '7','9','3','8','7','e','a','}',0 }; static const WCHAR policyFlags[] = { 'P','o','l','i','c','y','F','l','a', 'g','s',0 }; HKEY key; BOOL ret = FALSE; if (!RegOpenKeyExW(HKEY_LOCAL_MACHINE, policyFlagsKey, 0, KEY_READ, &key)) { DWORD type, flags, size = sizeof(flags); if (!RegQueryValueExW(key, policyFlags, NULL, &type, (BYTE *)&flags, &size) && type == REG_DWORD) { /* The flag values aren't defined in any header I'm aware of, but * this value is well documented on the net. */ if (flags & 0x00010000) ret = TRUE; } RegCloseKey(key); } return ret; } /* Returns TRUE if pCert is not in the Disallowed system store, or FALSE if it * is. */ static BOOL CRYPTDLG_IsCertAllowed(PCCERT_CONTEXT pCert) { BOOL ret; BYTE hash[20]; DWORD size = sizeof(hash); if ((ret = CertGetCertificateContextProperty(pCert, CERT_SIGNATURE_HASH_PROP_ID, hash, &size))) { static const WCHAR disallowedW[] = { 'D','i','s','a','l','l','o','w','e','d',0 }; HCERTSTORE disallowed = CertOpenStore(CERT_STORE_PROV_SYSTEM_W, X509_ASN_ENCODING, 0, CERT_SYSTEM_STORE_CURRENT_USER, disallowedW); if (disallowed) { PCCERT_CONTEXT found = CertFindCertificateInStore(disallowed, X509_ASN_ENCODING, 0, CERT_FIND_SIGNATURE_HASH, hash, NULL); if (found) { ret = FALSE; CertFreeCertificateContext(found); } CertCloseStore(disallowed, 0); } } return ret; } static DWORD CRYPTDLG_TrustStatusToConfidence(DWORD errorStatus) { DWORD confidence = 0; confidence = 0; if (!(errorStatus & CERT_TRUST_IS_NOT_SIGNATURE_VALID)) confidence |= CERT_CONFIDENCE_SIG; if (!(errorStatus & CERT_TRUST_IS_NOT_TIME_VALID)) confidence |= CERT_CONFIDENCE_TIME; if (!(errorStatus & CERT_TRUST_IS_NOT_TIME_NESTED)) confidence |= CERT_CONFIDENCE_TIMENEST; return confidence; } static BOOL CRYPTDLG_CopyChain(CRYPT_PROVIDER_DATA *data, PCCERT_CHAIN_CONTEXT chain) { BOOL ret; CRYPT_PROVIDER_SGNR signer; PCERT_SIMPLE_CHAIN simpleChain = chain->rgpChain[0]; DWORD i; memset(&signer, 0, sizeof(signer)); signer.cbStruct = sizeof(signer); ret = data->psPfns->pfnAddSgnr2Chain(data, FALSE, 0, &signer); if (ret) { CRYPT_PROVIDER_SGNR *sgnr = WTHelperGetProvSignerFromChain(data, 0, FALSE, 0); if (sgnr) { sgnr->dwError = simpleChain->TrustStatus.dwErrorStatus; sgnr->pChainContext = CertDuplicateCertificateChain(chain); } else ret = FALSE; for (i = 0; ret && i < simpleChain->cElement; i++) { ret = data->psPfns->pfnAddCert2Chain(data, 0, FALSE, 0, simpleChain->rgpElement[i]->pCertContext); if (ret) { CRYPT_PROVIDER_CERT *cert; if ((cert = WTHelperGetProvCertFromChain(sgnr, i))) { CERT_CHAIN_ELEMENT *element = simpleChain->rgpElement[i]; cert->dwConfidence = CRYPTDLG_TrustStatusToConfidence( element->TrustStatus.dwErrorStatus); cert->dwError = element->TrustStatus.dwErrorStatus; cert->pChainElement = element; } else ret = FALSE; } } } return ret; } static CERT_VERIFY_CERTIFICATE_TRUST *CRYPTDLG_GetVerifyData( CRYPT_PROVIDER_DATA *data) { CERT_VERIFY_CERTIFICATE_TRUST *pCert = NULL; /* This should always be true, but just in case the calling function is * called directly: */ if (data->pWintrustData->dwUnionChoice == WTD_CHOICE_BLOB && data->pWintrustData->u.pBlob && data->pWintrustData->u.pBlob->cbMemObject == sizeof(CERT_VERIFY_CERTIFICATE_TRUST) && data->pWintrustData->u.pBlob->pbMemObject) pCert = (CERT_VERIFY_CERTIFICATE_TRUST *) data->pWintrustData->u.pBlob->pbMemObject; return pCert; } static HCERTCHAINENGINE CRYPTDLG_MakeEngine(CERT_VERIFY_CERTIFICATE_TRUST *cert) { HCERTCHAINENGINE engine = NULL; HCERTSTORE root = NULL, trust = NULL; DWORD i; if (cert->cRootStores) { root = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0, CERT_STORE_CREATE_NEW_FLAG, NULL); if (root) { for (i = 0; i < cert->cRootStores; i++) CertAddStoreToCollection(root, cert->rghstoreRoots[i], 0, 0); } } if (cert->cTrustStores) { trust = CertOpenStore(CERT_STORE_PROV_COLLECTION, 0, 0, CERT_STORE_CREATE_NEW_FLAG, NULL); if (root) { for (i = 0; i < cert->cTrustStores; i++) CertAddStoreToCollection(trust, cert->rghstoreTrust[i], 0, 0); } } if (cert->cRootStores || cert->cStores || cert->cTrustStores) { CERT_CHAIN_ENGINE_CONFIG config; memset(&config, 0, sizeof(config)); config.cbSize = sizeof(config); config.hRestrictedRoot = root; config.hRestrictedTrust = trust; config.cAdditionalStore = cert->cStores; config.rghAdditionalStore = cert->rghstoreCAs; config.hRestrictedRoot = root; CertCreateCertificateChainEngine(&config, &engine); CertCloseStore(root, 0); CertCloseStore(trust, 0); } return engine; } /*********************************************************************** * CertTrustFinalPolicy (CRYPTDLG.@) */ HRESULT WINAPI CertTrustFinalPolicy(CRYPT_PROVIDER_DATA *data) { BOOL ret; DWORD err = S_OK; CERT_VERIFY_CERTIFICATE_TRUST *pCert = CRYPTDLG_GetVerifyData(data); TRACE("(%p)\n", data); if (data->pWintrustData->dwUIChoice != WTD_UI_NONE) FIXME("unimplemented for UI choice %d\n", data->pWintrustData->dwUIChoice); if (pCert) { DWORD flags = 0; CERT_CHAIN_PARA chainPara; HCERTCHAINENGINE engine; memset(&chainPara, 0, sizeof(chainPara)); chainPara.cbSize = sizeof(chainPara); if (CRYPTDLG_CheckOnlineCRL()) flags |= CERT_CHAIN_REVOCATION_CHECK_END_CERT; engine = CRYPTDLG_MakeEngine(pCert); GetSystemTimeAsFileTime(&data->sftSystemTime); ret = CRYPTDLG_IsCertAllowed(pCert->pccert); if (ret) { PCCERT_CHAIN_CONTEXT chain; ret = CertGetCertificateChain(engine, pCert->pccert, &data->sftSystemTime, NULL, &chainPara, flags, NULL, &chain); if (ret) { if (chain->cChain != 1) { FIXME("unimplemented for more than 1 simple chain\n"); err = TRUST_E_SUBJECT_FORM_UNKNOWN; ret = FALSE; } else if ((ret = CRYPTDLG_CopyChain(data, chain))) { if (CertVerifyTimeValidity(&data->sftSystemTime, pCert->pccert->pCertInfo)) { ret = FALSE; err = CERT_E_EXPIRED; } } else err = TRUST_E_SYSTEM_ERROR; CertFreeCertificateChain(chain); } else err = TRUST_E_SUBJECT_NOT_TRUSTED; } CertFreeCertificateChainEngine(engine); } else { ret = FALSE; err = TRUST_E_NOSIGNATURE; } /* Oddly, native doesn't set the error in the trust step error location, * probably because this action is more advisory than anything else. * Instead it stores it as the final error, but the function "succeeds" in * any case. */ if (!ret) data->dwFinalError = err; TRACE("returning %d (%08x)\n", S_OK, data->dwFinalError); return S_OK; } /*********************************************************************** * CertViewPropertiesA (CRYPTDLG.@) */ BOOL WINAPI CertViewPropertiesA(CERT_VIEWPROPERTIES_STRUCT_A *info) { CERT_VIEWPROPERTIES_STRUCT_W infoW; LPWSTR title = NULL; BOOL ret; TRACE("(%p)\n", info); memcpy(&infoW, info, sizeof(infoW)); if (info->szTitle) { int len = MultiByteToWideChar(CP_ACP, 0, info->szTitle, -1, NULL, 0); title = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR)); if (title) { MultiByteToWideChar(CP_ACP, 0, info->szTitle, -1, title, len); infoW.szTitle = title; } else { ret = FALSE; goto error; } } ret = CertViewPropertiesW(&infoW); HeapFree(GetProcessHeap(), 0, title); error: return ret; } /*********************************************************************** * CertViewPropertiesW (CRYPTDLG.@) */ BOOL WINAPI CertViewPropertiesW(CERT_VIEWPROPERTIES_STRUCT_W *info) { static GUID cert_action_verify = CERT_CERTIFICATE_ACTION_VERIFY; CERT_VERIFY_CERTIFICATE_TRUST trust; WINTRUST_BLOB_INFO blob; WINTRUST_DATA wtd; LONG err; BOOL ret; TRACE("(%p)\n", info); memset(&trust, 0, sizeof(trust)); trust.cbSize = sizeof(trust); trust.pccert = info->pCertContext; trust.cRootStores = info->cRootStores; trust.rghstoreRoots = info->rghstoreRoots; trust.cStores = info->cStores; trust.rghstoreCAs = info->rghstoreCAs; trust.cTrustStores = info->cTrustStores; trust.rghstoreTrust = info->rghstoreTrust; memset(&blob, 0, sizeof(blob)); blob.cbStruct = sizeof(blob); blob.cbMemObject = sizeof(trust); blob.pbMemObject = (BYTE *)&trust; memset(&wtd, 0, sizeof(wtd)); wtd.cbStruct = sizeof(wtd); wtd.dwUIChoice = WTD_UI_NONE; wtd.dwUnionChoice = WTD_CHOICE_BLOB; wtd.u.pBlob = &blob; wtd.dwStateAction = WTD_STATEACTION_VERIFY; err = WinVerifyTrust(NULL, &cert_action_verify, &wtd); if (err == ERROR_SUCCESS) { CRYPTUI_VIEWCERTIFICATE_STRUCTW uiInfo; BOOL propsChanged = FALSE; memset(&uiInfo, 0, sizeof(uiInfo)); uiInfo.dwSize = sizeof(uiInfo); uiInfo.hwndParent = info->hwndParent; uiInfo.dwFlags = CRYPTUI_DISABLE_ADDTOSTORE | CRYPTUI_ENABLE_EDITPROPERTIES; uiInfo.szTitle = info->szTitle; uiInfo.pCertContext = info->pCertContext; uiInfo.cPurposes = info->cArrayPurposes; uiInfo.rgszPurposes = (LPCSTR *)info->arrayPurposes; uiInfo.u.hWVTStateData = wtd.hWVTStateData; uiInfo.fpCryptProviderDataTrustedUsage = TRUE; uiInfo.cPropSheetPages = info->cArrayPropSheetPages; uiInfo.rgPropSheetPages = info->arrayPropSheetPages; uiInfo.nStartPage = info->nStartPage; ret = CryptUIDlgViewCertificateW(&uiInfo, &propsChanged); wtd.dwStateAction = WTD_STATEACTION_CLOSE; WinVerifyTrust(NULL, &cert_action_verify, &wtd); } else ret = FALSE; return ret; } #define szOID_MICROSOFT_Encryption_Key_Preference "1.3.6.1.4.1.311.16.4" /*********************************************************************** * DllRegisterServer (CRYPTDLG.@) */ HRESULT WINAPI DllRegisterServer(void) { static WCHAR cryptdlg[] = { 'c','r','y','p','t','d','l','g','.', 'd','l','l',0 }; static WCHAR wintrust[] = { 'w','i','n','t','r','u','s','t','.', 'd','l','l',0 }; static WCHAR certTrustInit[] = { 'C','e','r','t','T','r','u','s','t', 'I','n','i','t',0 }; static WCHAR wintrustCertificateTrust[] = { 'W','i','n','t','r','u','s','t', 'C','e','r','t','i','f','i','c','a','t','e','T','r','u','s','t',0 }; static WCHAR certTrustCertPolicy[] = { 'C','e','r','t','T','r','u','s','t', 'C','e','r','t','P','o','l','i','c','y',0 }; static WCHAR certTrustFinalPolicy[] = { 'C','e','r','t','T','r','u','s','t', 'F','i','n','a','l','P','o','l','i','c','y',0 }; static WCHAR certTrustCleanup[] = { 'C','e','r','t','T','r','u','s','t', 'C','l','e','a','n','u','p',0 }; static const WCHAR cryptDlg[] = { 'c','r','y','p','t','d','l','g','.', 'd','l','l',0 }; CRYPT_REGISTER_ACTIONID reg; GUID guid = CERT_CERTIFICATE_ACTION_VERIFY; HRESULT hr = S_OK; memset(®, 0, sizeof(reg)); reg.cbStruct = sizeof(reg); reg.sInitProvider.cbStruct = sizeof(CRYPT_TRUST_REG_ENTRY); reg.sInitProvider.pwszDLLName = cryptdlg; reg.sInitProvider.pwszFunctionName = certTrustInit; reg.sCertificateProvider.cbStruct = sizeof(CRYPT_TRUST_REG_ENTRY); reg.sCertificateProvider.pwszDLLName = wintrust; reg.sCertificateProvider.pwszFunctionName = wintrustCertificateTrust; reg.sCertificatePolicyProvider.cbStruct = sizeof(CRYPT_TRUST_REG_ENTRY); reg.sCertificatePolicyProvider.pwszDLLName = cryptdlg; reg.sCertificatePolicyProvider.pwszFunctionName = certTrustCertPolicy; reg.sFinalPolicyProvider.cbStruct = sizeof(CRYPT_TRUST_REG_ENTRY); reg.sFinalPolicyProvider.pwszDLLName = cryptdlg; reg.sFinalPolicyProvider.pwszFunctionName = certTrustFinalPolicy; reg.sCleanupProvider.cbStruct = sizeof(CRYPT_TRUST_REG_ENTRY); reg.sCleanupProvider.pwszDLLName = cryptdlg; reg.sCleanupProvider.pwszFunctionName = certTrustCleanup; if (!WintrustAddActionID(&guid, WT_ADD_ACTION_ID_RET_RESULT_FLAG, ®)) hr = GetLastError(); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_ENCODE_OBJECT_FUNC, "1.3.6.1.4.1.311.16.1.1", cryptDlg, "EncodeAttrSequence"); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_ENCODE_OBJECT_FUNC, szOID_MICROSOFT_Encryption_Key_Preference, cryptDlg, "EncodeRecipientID"); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_DECODE_OBJECT_FUNC, "1.3.6.1.4.1.311.16.1.1", cryptDlg, "DecodeAttrSequence"); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_DECODE_OBJECT_FUNC, szOID_MICROSOFT_Encryption_Key_Preference, cryptDlg, "DecodeRecipientID"); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_FORMAT_OBJECT_FUNC, szOID_PKIX_KP_EMAIL_PROTECTION, cryptDlg, "FormatPKIXEmailProtection"); CryptRegisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_FORMAT_OBJECT_FUNC, szOID_CERT_POLICIES, cryptDlg, "FormatVerisignExtension"); return hr; } /*********************************************************************** * DllUnregisterServer (CRYPTDLG.@) */ HRESULT WINAPI DllUnregisterServer(void) { GUID guid = CERT_CERTIFICATE_ACTION_VERIFY; WintrustRemoveActionID(&guid); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_ENCODE_OBJECT_FUNC, "1.3.6.1.4.1.311.16.1.1"); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_ENCODE_OBJECT_FUNC, szOID_MICROSOFT_Encryption_Key_Preference); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_DECODE_OBJECT_FUNC, "1.3.6.1.4.1.311.16.1.1"); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_DECODE_OBJECT_FUNC, szOID_MICROSOFT_Encryption_Key_Preference); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_FORMAT_OBJECT_FUNC, szOID_PKIX_KP_EMAIL_PROTECTION); CryptUnregisterOIDFunction(X509_ASN_ENCODING, CRYPT_OID_FORMAT_OBJECT_FUNC, szOID_CERT_POLICIES); return S_OK; }