src/manager/service/ckm-logic.cpp

   1 /*
   2  *  Copyright (c) 2000 - 2014 Samsung Electronics Co., Ltd All Rights Reserved
   3  *
   4  *  Licensed under the Apache License, Version 2.0 (the "License");
   5  *  you may not use this file except in compliance with the License.
   6  *  You may obtain a copy of the License at
   7  *
   8  *      http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  *  Unless required by applicable law or agreed to in writing, software
  11  *  distributed under the License is distributed on an "AS IS" BASIS,
  12  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  *  See the License for the specific language governing permissions and
  14  *  limitations under the License
  15  *
  16  *
  17  * @file        ckm-logic.cpp
  18  * @author      Bartlomiej Grzelewski (b.grzelewski@samsung.com)
  19  * @version     1.0
  20  * @brief       Sample service implementation.
  21  */
  22 #include <dpl/serialization.h>
  23 #include <dpl/log/log.h>
  24 #include <ckm/ckm-error.h>
  25 #include <ckm/ckm-type.h>
  26 #include <key-provider.h>
  27 #include <file-system.h>
  28 #include <ckm-logic.h>
  29 #include <key-impl.h>
  30 #include <key-aes-impl.h>
  31 #include <certificate-config.h>
  32 #include <certificate-store.h>
  33 #include <algorithm>
  34 #include <sw-backend/store.h>
  35 #include <generic-backend/exception.h>
  36 #include <ss-migrate.h>
  37
  38 namespace {
  39 const char *const CERT_SYSTEM_DIR          = CA_CERTS_DIR;
  40 const char *const SYSTEM_DB_PASSWD         = "cAtRugU7";
  41
  42 bool isLabelValid(const CKM::Label &label)
  43 {
  44         // TODO: copy code from libprivilege control (for check smack label)
  45         if (label.find(CKM::LABEL_NAME_SEPARATOR) != CKM::Label::npos)
  46                 return false;
  47
  48         return true;
  49 }
  50
  51 bool isNameValid(const CKM::Name &name)
  52 {
  53         if (name.find(CKM::LABEL_NAME_SEPARATOR) != CKM::Name::npos)
  54                 return false;
  55
  56         return true;
  57 }
  58
  59 } // anonymous namespace
  60
  61 namespace CKM {
  62
  63 const uid_t CKMLogic::SYSTEM_DB_UID = 0;
  64 const uid_t CKMLogic::ADMIN_USER_DB_UID = 5001;
  65
  66 CKMLogic::CKMLogic()
  67 {
  68         CertificateConfig::addSystemCertificateDir(CERT_SYSTEM_DIR);
  69
  70         m_accessControl.updateCCMode();
  71 }
  72
  73 CKMLogic::~CKMLogic() {}
  74
  75 void CKMLogic::loadDKEKFile(uid_t user, const Password &password)
  76 {
  77         auto &handle = m_userDataMap[user];
  78
  79         FileSystem fs(user);
  80
  81         auto wrappedDKEK = fs.getDKEK();
  82
  83         if (wrappedDKEK.empty()) {
  84                 wrappedDKEK = KeyProvider::generateDomainKEK(std::to_string(user), password);
  85                 fs.saveDKEK(wrappedDKEK);
  86         }
  87
  88         handle.keyProvider = KeyProvider(wrappedDKEK, password);
  89 }
  90
  91 void CKMLogic::saveDKEKFile(uid_t user, const Password &password)
  92 {
  93         auto &handle = m_userDataMap[user];
  94
  95         FileSystem fs(user);
  96         fs.saveDKEK(handle.keyProvider.getWrappedDomainKEK(password));
  97 }
  98
  99 void CKMLogic::migrateSecureStorageData(bool isAdminUser)
 100 {
 101         SsMigration::migrate(isAdminUser, [this](const std::string &name,
 102                                                                                          const Crypto::Data &data,
 103                                                                                          bool adminUserFlag) {
 104                 LogInfo("Migrate data called with  name: " << name);
 105                 auto ownerId = adminUserFlag ? OWNER_ID_ADMIN_USER : OWNER_ID_SYSTEM;
 106                 auto uid = adminUserFlag ? ADMIN_USER_DB_UID : SYSTEM_DB_UID;
 107
 108                 int ret = verifyAndSaveDataHelper(Credentials(uid, ownerId), name, ownerId, data,
 109                                                                                   PolicySerializable());
 110
 111                 if (ret == CKM_API_ERROR_DB_ALIAS_EXISTS)
 112                         LogWarning("Alias already exist for migrated name: " << name);
 113                 else if (ret != CKM_API_SUCCESS)
 114                         LogError("Failed to migrate secure-storage data. name: " << name <<
 115                                          " ret: " << ret);
 116         });
 117 }
 118
 119 int CKMLogic::unlockDatabase(uid_t user, const Password &password)
 120 {
 121         if (0 < m_userDataMap.count(user) &&
 122                         m_userDataMap[user].keyProvider.isInitialized())
 123                 return CKM_API_SUCCESS;
 124
 125         int retCode = CKM_API_SUCCESS;
 126
 127         try {
 128                 auto &handle = m_userDataMap[user];
 129
 130                 FileSystem fs(user);
 131                 loadDKEKFile(user, password);
 132
 133                 auto wrappedDatabaseDEK = fs.getDBDEK();
 134
 135                 if (wrappedDatabaseDEK.empty()) {
 136                         wrappedDatabaseDEK = handle.keyProvider.generateDEK(std::to_string(user));
 137                         fs.saveDBDEK(wrappedDatabaseDEK);
 138                 }
 139
 140                 RawBuffer key = handle.keyProvider.getPureDEK(wrappedDatabaseDEK);
 141
 142                 handle.database = DB::Crypto(fs.getDBPath(), key);
 143                 handle.crypto = CryptoLogic();
 144
 145                 if (!m_accessControl.isSystemService(user)) {
 146                         // remove data of removed apps during locked state
 147                         AppLabelVector removedApps = fs.clearRemovedsApps();
 148
 149                         for (auto &appSmackLabel : removedApps) {
 150                                 handle.crypto.removeKey(appSmackLabel);
 151                                 handle.database.deleteKey(appSmackLabel);
 152                         }
 153                 }
 154
 155                 if (user == SYSTEM_DB_UID && SsMigration::hasData())
 156                         migrateSecureStorageData(false);
 157                 else if (user == ADMIN_USER_DB_UID && SsMigration::hasData())
 158                         migrateSecureStorageData(true);
 159         } catch (const Exc::Exception &e) {
 160                 retCode = e.error();
 161         } catch (const CKM::Exception &e) {
 162                 LogError("CKM::Exception: " << e.GetMessage());
 163                 retCode = CKM_API_ERROR_SERVER_ERROR;
 164         }
 165
 166         if (CKM_API_SUCCESS != retCode)
 167                 m_userDataMap.erase(user);
 168
 169         return retCode;
 170 }
 171
 172 int CKMLogic::unlockSystemDB()
 173 {
 174         return unlockDatabase(SYSTEM_DB_UID, SYSTEM_DB_PASSWD);
 175 }
 176
 177 UserData &CKMLogic::selectDatabase(const Credentials &cred,
 178                                                                    const Label &incoming_label)
 179 {
 180         // if user trying to access system service - check:
 181         //    * if user database is unlocked [mandatory]
 182         //    * if not - proceed with regular user database
 183         //    * if explicit system database label given -> switch to system DB
 184         if (!m_accessControl.isSystemService(cred)) {
 185                 if (0 == m_userDataMap.count(cred.clientUid))
 186                         ThrowErr(Exc::DatabaseLocked, "database with UID: ", cred.clientUid, " locked");
 187
 188                 if (0 != incoming_label.compare(OWNER_ID_SYSTEM))
 189                         return m_userDataMap[cred.clientUid];
 190         }
 191
 192         // system database selected, modify the label
 193         if (CKM_API_SUCCESS != unlockSystemDB())
 194                 ThrowErr(Exc::DatabaseLocked, "can not unlock system database");
 195
 196         return m_userDataMap[SYSTEM_DB_UID];
 197 }
 198
 199 RawBuffer CKMLogic::unlockUserKey(uid_t user, const Password &password)
 200 {
 201         int retCode = CKM_API_SUCCESS;
 202
 203         if (!m_accessControl.isSystemService(user))
 204                 retCode = unlockDatabase(user, password);
 205         else // do not allow lock/unlock operations for system users
 206                 retCode = CKM_API_ERROR_INPUT_PARAM;
 207
 208         return MessageBuffer::Serialize(retCode).Pop();
 209 }
 210
 211 RawBuffer CKMLogic::updateCCMode()
 212 {
 213         m_accessControl.updateCCMode();
 214         return MessageBuffer::Serialize(CKM_API_SUCCESS).Pop();
 215 }
 216
 217 RawBuffer CKMLogic::lockUserKey(uid_t user)
 218 {
 219         int retCode = CKM_API_SUCCESS;
 220
 221         if (!m_accessControl.isSystemService(user))
 222                 m_userDataMap.erase(user);
 223         else // do not allow lock/unlock operations for system users
 224                 retCode = CKM_API_ERROR_INPUT_PARAM;
 225
 226         return MessageBuffer::Serialize(retCode).Pop();
 227 }
 228
 229 RawBuffer CKMLogic::removeUserData(uid_t user)
 230 {
 231         int retCode = CKM_API_SUCCESS;
 232
 233         if (m_accessControl.isSystemService(user))
 234                 user = SYSTEM_DB_UID;
 235
 236         m_userDataMap.erase(user);
 237
 238         FileSystem fs(user);
 239         fs.removeUserData();
 240
 241         return MessageBuffer::Serialize(retCode).Pop();
 242 }
 243
 244 int CKMLogic::changeUserPasswordHelper(uid_t user,
 245                                                                            const Password &oldPassword,
 246                                                                            const Password &newPassword)
 247 {
 248         // do not allow to change system database password
 249         if (m_accessControl.isSystemService(user))
 250                 return CKM_API_ERROR_INPUT_PARAM;
 251
 252         loadDKEKFile(user, oldPassword);
 253         saveDKEKFile(user, newPassword);
 254
 255         return CKM_API_SUCCESS;
 256 }
 257
 258 RawBuffer CKMLogic::changeUserPassword(
 259         uid_t user,
 260         const Password &oldPassword,
 261         const Password &newPassword)
 262 {
 263         int retCode = CKM_API_SUCCESS;
 264
 265         try {
 266                 retCode = changeUserPasswordHelper(user, oldPassword, newPassword);
 267         } catch (const Exc::Exception &e) {
 268                 retCode = e.error();
 269         } catch (const CKM::Exception &e) {
 270                 LogError("CKM::Exception: " << e.GetMessage());
 271                 retCode = CKM_API_ERROR_SERVER_ERROR;
 272         }
 273
 274         return MessageBuffer::Serialize(retCode).Pop();
 275 }
 276
 277 int CKMLogic::resetUserPasswordHelper(
 278         uid_t user,
 279         const Password &newPassword)
 280 {
 281         // do not allow to reset system database password
 282         if (m_accessControl.isSystemService(user))
 283                 return CKM_API_ERROR_INPUT_PARAM;
 284
 285         int retCode = CKM_API_SUCCESS;
 286
 287         if (0 == m_userDataMap.count(user)) {
 288                 // Check if key exists. If exists we must return error
 289                 FileSystem fs(user);
 290                 auto wrappedDKEKMain = fs.getDKEK();
 291
 292                 if (!wrappedDKEKMain.empty())
 293                         retCode = CKM_API_ERROR_BAD_REQUEST;
 294         } else {
 295                 saveDKEKFile(user, newPassword);
 296         }
 297
 298         return retCode;
 299 }
 300
 301 RawBuffer CKMLogic::resetUserPassword(
 302         uid_t user,
 303         const Password &newPassword)
 304 {
 305         int retCode = CKM_API_SUCCESS;
 306
 307         try {
 308                 retCode = resetUserPasswordHelper(user, newPassword);
 309         } catch (const Exc::Exception &e) {
 310                 retCode = e.error();
 311         } catch (const CKM::Exception &e) {
 312                 LogError("CKM::Exception: " << e.GetMessage());
 313                 retCode = CKM_API_ERROR_SERVER_ERROR;
 314         }
 315
 316         return MessageBuffer::Serialize(retCode).Pop();
 317 }
 318
 319 RawBuffer CKMLogic::removeApplicationData(const Label &smackLabel)
 320 {
 321         int retCode = CKM_API_SUCCESS;
 322
 323         try {
 324                 if (smackLabel.empty()) {
 325                         retCode = CKM_API_ERROR_INPUT_PARAM;
 326                 } else {
 327                         UidVector uids = FileSystem::getUIDsFromDBFile();
 328
 329                         for (auto userId : uids) {
 330                                 if (0 == m_userDataMap.count(userId)) {
 331                                         FileSystem fs(userId);
 332                                         fs.addRemovedApp(smackLabel);
 333                                 } else {
 334                                         auto &handle = m_userDataMap[userId];
 335                                         handle.crypto.removeKey(smackLabel);
 336                                         handle.database.deleteKey(smackLabel);
 337                                 }
 338                         }
 339                 }
 340         } catch (const Exc::Exception &e) {
 341                 retCode = e.error();
 342         } catch (const CKM::Exception &e) {
 343                 LogError("CKM::Exception: " << e.GetMessage());
 344                 retCode = CKM_API_ERROR_SERVER_ERROR;
 345         }
 346
 347         return MessageBuffer::Serialize(retCode).Pop();
 348 }
 349
 350 int CKMLogic::checkSaveConditions(
 351         const Credentials &cred,
 352         UserData &handler,
 353         const Name &name,
 354         const Label &ownerLabel)
 355 {
 356         // verify name and label are correct
 357         if (!isNameValid(name) || !isLabelValid(ownerLabel)) {
 358                 LogDebug("Invalid parameter passed to key-manager");
 359                 return CKM_API_ERROR_INPUT_PARAM;
 360         }
 361
 362         // check if allowed to save using ownerLabel
 363         int access_ec = m_accessControl.canSave(cred, ownerLabel);
 364
 365         if (access_ec != CKM_API_SUCCESS) {
 366                 LogDebug("label " << cred.smackLabel << " can not save rows using label " <<
 367                                  ownerLabel);
 368                 return access_ec;
 369         }
 370
 371         // check if not a duplicate
 372         if (handler.database.isNameLabelPresent(name, ownerLabel))
 373                 return CKM_API_ERROR_DB_ALIAS_EXISTS;
 374
 375         // encryption section
 376         if (!handler.crypto.haveKey(ownerLabel)) {
 377                 RawBuffer got_key;
 378                 auto key_optional = handler.database.getKey(ownerLabel);
 379
 380                 if (!key_optional) {
 381                         LogDebug("No Key in database found. Generating new one for label: " <<
 382                                          ownerLabel);
 383                         got_key = handler.keyProvider.generateDEK(ownerLabel);
 384                         handler.database.saveKey(ownerLabel, got_key);
 385                 } else {
 386                         LogDebug("Key from DB");
 387                         got_key = *key_optional;
 388                 }
 389
 390                 got_key = handler.keyProvider.getPureDEK(got_key);
 391                 handler.crypto.pushKey(ownerLabel, got_key);
 392         }
 393
 394         return CKM_API_SUCCESS;
 395 }
 396
 397 DB::Row CKMLogic::createEncryptedRow(
 398         CryptoLogic &crypto,
 399         const Name &name,
 400         const Label &label,
 401         const Crypto::Data &data,
 402         const Policy &policy) const
 403 {
 404         Crypto::GStore &store = m_decider.getStore(data.type, policy.extractable);
 405
 406         // do not encrypt data with password during cc_mode on
 407         Token token = store.import(data,
 408                                                            m_accessControl.isCCMode() ? "" : policy.password);
 409         DB::Row row(std::move(token), name, label,
 410                                 static_cast<int>(policy.extractable));
 411         crypto.encryptRow(row);
 412         return row;
 413 }
 414
 415 int CKMLogic::verifyBinaryData(Crypto::Data &input) const
 416 {
 417         Crypto::Data dummy;
 418         return toBinaryData(input, dummy);
 419 }
 420
 421 int CKMLogic::toBinaryData(const Crypto::Data &input,
 422                                                    Crypto::Data &output) const
 423 {
 424         // verify the data integrity
 425         if (input.type.isKey()) {
 426                 KeyShPtr output_key;
 427
 428                 if (input.type.isSKey())
 429                         output_key = CKM::Key::createAES(input.data);
 430                 else
 431                         output_key = CKM::Key::create(input.data);
 432
 433                 if (output_key.get() == NULL) {
 434                         LogDebug("provided binary data is not valid key data");
 435                         return CKM_API_ERROR_INPUT_PARAM;
 436                 }
 437
 438                 output = std::move(Crypto::Data(input.type, output_key->getDER()));
 439         } else if (input.type.isCertificate() || input.type.isChainCert()) {
 440                 CertificateShPtr cert = CKM::Certificate::create(input.data,
 441                                                                 DataFormat::FORM_DER);
 442
 443                 if (cert.get() == NULL) {
 444                         LogDebug("provided binary data is not valid certificate data");
 445                         return CKM_API_ERROR_INPUT_PARAM;
 446                 }
 447
 448                 output = std::move(Crypto::Data(input.type, cert->getDER()));
 449         } else {
 450                 output = input;
 451         }
 452
 453         // TODO: add here BINARY_DATA verification, i.e: max size etc.
 454         return CKM_API_SUCCESS;
 455 }
 456
 457 int CKMLogic::verifyAndSaveDataHelper(
 458         const Credentials &cred,
 459         const Name &name,
 460         const Label &label,
 461         const Crypto::Data &data,
 462         const PolicySerializable &policy)
 463 {
 464         int retCode = CKM_API_ERROR_UNKNOWN;
 465
 466         try {
 467                 // check if data is correct
 468                 Crypto::Data binaryData;
 469                 retCode = toBinaryData(data, binaryData);
 470
 471                 if (retCode != CKM_API_SUCCESS)
 472                         return retCode;
 473                 else
 474                         return saveDataHelper(cred, name, label, binaryData, policy);
 475         } catch (const Exc::Exception &e) {
 476                 return e.error();
 477         } catch (const CKM::Exception &e) {
 478                 LogError("CKM::Exception: " << e.GetMessage());
 479                 return CKM_API_ERROR_SERVER_ERROR;
 480         }
 481 }
 482
 483 int CKMLogic::getKeyForService(
 484         const Credentials &cred,
 485         const Name &name,
 486         const Label &label,
 487         const Password &pass,
 488         Crypto::GObjShPtr &key)
 489 {
 490         DB::Row row;
 491
 492         try {
 493                 // Key is for internal service use. It won't be exported to the client
 494                 Crypto::GObjUPtr obj;
 495                 int retCode = readDataHelper(false, cred, DataType::DB_KEY_FIRST, name, label,
 496                                                                          pass, obj);
 497
 498                 if (retCode == CKM_API_SUCCESS)
 499                         key = std::move(obj);
 500
 501                 return retCode;
 502         } catch (const Exc::Exception &e) {
 503                 return e.error();
 504         } catch (const CKM::Exception &e) {
 505                 LogError("CKM::Exception: " << e.GetMessage());
 506                 return CKM_API_ERROR_SERVER_ERROR;
 507         }
 508 }
 509
 510 RawBuffer CKMLogic::saveData(
 511         const Credentials &cred,
 512         int commandId,
 513         const Name &name,
 514         const Label &label,
 515         const Crypto::Data &data,
 516         const PolicySerializable &policy)
 517 {
 518         int retCode = verifyAndSaveDataHelper(cred, name, label, data, policy);
 519         auto response = MessageBuffer::Serialize(static_cast<int>(LogicCommand::SAVE),
 520                                         commandId,
 521                                         retCode,
 522                                         static_cast<int>(data.type));
 523         return response.Pop();
 524 }
 525
 526 int CKMLogic::extractPKCS12Data(
 527         CryptoLogic &crypto,
 528         const Name &name,
 529         const Label &ownerLabel,
 530         const PKCS12Serializable &pkcs,
 531         const PolicySerializable &keyPolicy,
 532         const PolicySerializable &certPolicy,
 533         DB::RowVector &output) const
 534 {
 535         // private key is mandatory
 536         auto key = pkcs.getKey();
 537
 538         if (!key) {
 539                 LogError("Failed to get private key from pkcs");
 540                 return CKM_API_ERROR_INVALID_FORMAT;
 541         }
 542
 543         Crypto::Data keyData(DataType(key->getType()), key->getDER());
 544         int retCode = verifyBinaryData(keyData);
 545
 546         if (retCode != CKM_API_SUCCESS)
 547                 return retCode;
 548
 549         output.push_back(createEncryptedRow(crypto, name, ownerLabel, keyData,
 550                                                                                 keyPolicy));
 551
 552         // certificate is mandatory
 553         auto cert = pkcs.getCertificate();
 554
 555         if (!cert) {
 556                 LogError("Failed to get certificate from pkcs");
 557                 return CKM_API_ERROR_INVALID_FORMAT;
 558         }
 559
 560         Crypto::Data certData(DataType::CERTIFICATE, cert->getDER());
 561         retCode = verifyBinaryData(certData);
 562
 563         if (retCode != CKM_API_SUCCESS)
 564                 return retCode;
 565
 566         output.push_back(createEncryptedRow(crypto, name, ownerLabel, certData,
 567                                                                                 certPolicy));
 568
 569         // CA cert chain
 570         unsigned int cert_index = 0;
 571
 572         for (const auto &ca : pkcs.getCaCertificateShPtrVector()) {
 573                 Crypto::Data caCertData(DataType::getChainDatatype(cert_index ++),
 574                                                                 ca->getDER());
 575                 int retCode = verifyBinaryData(caCertData);
 576
 577                 if (retCode != CKM_API_SUCCESS)
 578                         return retCode;
 579
 580                 output.push_back(createEncryptedRow(crypto, name, ownerLabel, caCertData,
 581                                                                                         certPolicy));
 582         }
 583
 584         return CKM_API_SUCCESS;
 585 }
 586
 587 RawBuffer CKMLogic::savePKCS12(
 588         const Credentials &cred,
 589         int commandId,
 590         const Name &name,
 591         const Label &label,
 592         const PKCS12Serializable &pkcs,
 593         const PolicySerializable &keyPolicy,
 594         const PolicySerializable &certPolicy)
 595 {
 596         int retCode = CKM_API_ERROR_UNKNOWN;
 597
 598         try {
 599                 retCode = saveDataHelper(cred, name, label, pkcs, keyPolicy, certPolicy);
 600         } catch (const Exc::Exception &e) {
 601                 retCode = e.error();
 602         } catch (const CKM::Exception &e) {
 603                 LogError("CKM::Exception: " << e.GetMessage());
 604                 retCode = CKM_API_ERROR_SERVER_ERROR;
 605         }
 606
 607         auto response = MessageBuffer::Serialize(static_cast<int>
 608                                         (LogicCommand::SAVE_PKCS12),
 609                                         commandId,
 610                                         retCode);
 611         return response.Pop();
 612 }
 613
 614
 615 int CKMLogic::removeDataHelper(
 616         const Credentials &cred,
 617         const Name &name,
 618         const Label &label)
 619 {
 620         auto &handler = selectDatabase(cred, label);
 621
 622         // use client label if not explicitly provided
 623         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
 624
 625         if (!isNameValid(name) || !isLabelValid(ownerLabel)) {
 626                 LogDebug("Invalid label or name format");
 627                 return CKM_API_ERROR_INPUT_PARAM;
 628         }
 629
 630         DB::Crypto::Transaction transaction(&handler.database);
 631
 632         // read and check permissions
 633         PermissionMaskOptional permissionRowOpt =
 634                 handler.database.getPermissionRow(name, ownerLabel, cred.smackLabel);
 635         int retCode = m_accessControl.canDelete(cred,
 636                                                                                         PermissionForLabel(cred.smackLabel, permissionRowOpt));
 637
 638         if (retCode != CKM_API_SUCCESS) {
 639                 LogWarning("access control check result: " << retCode);
 640                 return retCode;
 641         }
 642
 643         // get all matching rows
 644         DB::RowVector rows;
 645         handler.database.getRows(name, ownerLabel, DataType::DB_FIRST,
 646                                                          DataType::DB_LAST, rows);
 647
 648         if (rows.empty()) {
 649                 LogDebug("No row for given name and label");
 650                 return CKM_API_ERROR_DB_ALIAS_UNKNOWN;
 651         }
 652
 653         // load app key if needed
 654         retCode = loadAppKey(handler, rows.front().ownerLabel);
 655
 656         if (CKM_API_SUCCESS != retCode)
 657                 return retCode;
 658
 659         // destroy it in store
 660         for (auto &r : rows) {
 661                 try {
 662                         handler.crypto.decryptRow(Password(), r);
 663                         m_decider.getStore(r).destroy(r);
 664                 } catch (const Exc::AuthenticationFailed &) {
 665                         LogDebug("Authentication failed when removing data. Ignored.");
 666                 }
 667         }
 668
 669         // delete row in db
 670         handler.database.deleteRow(name, ownerLabel);
 671         transaction.commit();
 672
 673         return CKM_API_SUCCESS;
 674 }
 675
 676 RawBuffer CKMLogic::removeData(
 677         const Credentials &cred,
 678         int commandId,
 679         const Name &name,
 680         const Label &label)
 681 {
 682         int retCode = CKM_API_ERROR_UNKNOWN;
 683
 684         try {
 685                 retCode = removeDataHelper(cred, name, label);
 686         } catch (const Exc::Exception &e) {
 687                 retCode = e.error();
 688         } catch (const CKM::Exception &e) {
 689                 LogError("Error: " << e.GetMessage());
 690                 retCode = CKM_API_ERROR_DB_ERROR;
 691         }
 692
 693         auto response = MessageBuffer::Serialize(static_cast<int>(LogicCommand::REMOVE),
 694                                         commandId,
 695                                         retCode);
 696         return response.Pop();
 697 }
 698
 699 int CKMLogic::readSingleRow(const Name &name,
 700                                                         const Label &ownerLabel,
 701                                                         DataType dataType,
 702                                                         DB::Crypto &database,
 703                                                         DB::Row &row)
 704 {
 705         DB::Crypto::RowOptional row_optional;
 706
 707         if (dataType.isKey()) {
 708                 // read all key types
 709                 row_optional = database.getRow(name,
 710                                                                            ownerLabel,
 711                                                                            DataType::DB_KEY_FIRST,
 712                                                                            DataType::DB_KEY_LAST);
 713         } else {
 714                 // read anything else
 715                 row_optional = database.getRow(name,
 716                                                                            ownerLabel,
 717                                                                            dataType);
 718         }
 719
 720         if (!row_optional) {
 721                 LogDebug("No row for given name, label and type");
 722                 return CKM_API_ERROR_DB_ALIAS_UNKNOWN;
 723         } else {
 724                 row = *row_optional;
 725         }
 726
 727         return CKM_API_SUCCESS;
 728 }
 729
 730
 731 int CKMLogic::readMultiRow(const Name &name,
 732                                                    const Label &ownerLabel,
 733                                                    DataType dataType,
 734                                                    DB::Crypto &database,
 735                                                    DB::RowVector &output)
 736 {
 737         if (dataType.isKey())
 738                 // read all key types
 739                 database.getRows(name,
 740                                                  ownerLabel,
 741                                                  DataType::DB_KEY_FIRST,
 742                                                  DataType::DB_KEY_LAST,
 743                                                  output);
 744         else if (dataType.isChainCert())
 745                 // read all key types
 746                 database.getRows(name,
 747                                                  ownerLabel,
 748                                                  DataType::DB_CHAIN_FIRST,
 749                                                  DataType::DB_CHAIN_LAST,
 750                                                  output);
 751         else
 752                 // read anything else
 753                 database.getRows(name,
 754                                                  ownerLabel,
 755                                                  dataType,
 756                                                  output);
 757
 758         if (!output.size()) {
 759                 LogDebug("No row for given name, label and type");
 760                 return CKM_API_ERROR_DB_ALIAS_UNKNOWN;
 761         }
 762
 763         return CKM_API_SUCCESS;
 764 }
 765
 766 int CKMLogic::checkDataPermissionsHelper(const Credentials &cred,
 767                 const Name &name,
 768                 const Label &ownerLabel,
 769                 const Label &accessorLabel,
 770                 const DB::Row &row,
 771                 bool exportFlag,
 772                 DB::Crypto &database)
 773 {
 774         PermissionMaskOptional permissionRowOpt =
 775                 database.getPermissionRow(name, ownerLabel, accessorLabel);
 776
 777         if (exportFlag)
 778                 return m_accessControl.canExport(cred, row, PermissionForLabel(accessorLabel,
 779                                                                                  permissionRowOpt));
 780
 781         return m_accessControl.canRead(cred, PermissionForLabel(accessorLabel,
 782                                                                    permissionRowOpt));
 783 }
 784
 785 Crypto::GObjUPtr CKMLogic::rowToObject(
 786         UserData &handler,
 787         DB::Row row,
 788         const Password &password)
 789 {
 790         Crypto::GStore &store = m_decider.getStore(row);
 791
 792         Password pass = m_accessControl.isCCMode() ? "" : password;
 793
 794         // decrypt row
 795         Crypto::GObjUPtr obj;
 796
 797         if (CryptoLogic::getSchemeVersion(row.encryptionScheme) ==
 798                         CryptoLogic::ENCRYPTION_V2) {
 799                 handler.crypto.decryptRow(Password(), row);
 800
 801                 obj = store.getObject(row, pass);
 802         } else {
 803                 // decrypt entirely with old scheme: b64(pass(appkey(data))) -> data
 804                 handler.crypto.decryptRow(pass, row);
 805                 // destroy it in store
 806                 store.destroy(row);
 807
 808                 // import it to store with new scheme: data -> pass(data)
 809                 Token token = store.import(Crypto::Data(row.dataType, row.data), pass);
 810
 811                 // get it from the store (it can be different than the data we imported into store)
 812                 obj = store.getObject(token, pass);
 813
 814                 // update row with new token
 815                 *static_cast<Token *>(&row) = std::move(token);
 816
 817                 // encrypt it with app key: pass(data) -> b64(appkey(pass(data))
 818                 handler.crypto.encryptRow(row);
 819
 820                 // update it in db
 821                 handler.database.updateRow(row);
 822         }
 823
 824         return obj;
 825 }
 826
 827 int CKMLogic::readDataHelper(
 828         bool exportFlag,
 829         const Credentials &cred,
 830         DataType dataType,
 831         const Name &name,
 832         const Label &label,
 833         const Password &password,
 834         Crypto::GObjUPtrVector &objs)
 835 {
 836         auto &handler = selectDatabase(cred, label);
 837
 838         // use client label if not explicitly provided
 839         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
 840
 841         if (!isNameValid(name) || !isLabelValid(ownerLabel))
 842                 return CKM_API_ERROR_INPUT_PARAM;
 843
 844         // read rows
 845         DB::Crypto::Transaction transaction(&handler.database);
 846         DB::RowVector rows;
 847         int retCode = readMultiRow(name, ownerLabel, dataType, handler.database, rows);
 848
 849         if (CKM_API_SUCCESS != retCode)
 850                 return retCode;
 851
 852         // all read rows belong to the same owner
 853         DB::Row &firstRow = rows.at(0);
 854
 855         // check access rights
 856         retCode = checkDataPermissionsHelper(cred, name, ownerLabel, cred.smackLabel,
 857                                                                                  firstRow, exportFlag, handler.database);
 858
 859         if (CKM_API_SUCCESS != retCode)
 860                 return retCode;
 861
 862         // load app key if needed
 863         retCode = loadAppKey(handler, firstRow.ownerLabel);
 864
 865         if (CKM_API_SUCCESS != retCode)
 866                 return retCode;
 867
 868         // decrypt row
 869         for (auto &row : rows)
 870                 objs.push_back(rowToObject(handler, std::move(row), password));
 871
 872         // rowToObject may modify db
 873         transaction.commit();
 874
 875         return CKM_API_SUCCESS;
 876 }
 877
 878 int CKMLogic::readDataHelper(
 879         bool exportFlag,
 880         const Credentials &cred,
 881         DataType dataType,
 882         const Name &name,
 883         const Label &label,
 884         const Password &password,
 885         Crypto::GObjUPtr &obj)
 886 {
 887         DataType objDataType;
 888         return readDataHelper(exportFlag, cred, dataType, name, label, password, obj,
 889                                                   objDataType);
 890 }
 891
 892 int CKMLogic::readDataHelper(
 893         bool exportFlag,
 894         const Credentials &cred,
 895         DataType dataType,
 896         const Name &name,
 897         const Label &label,
 898         const Password &password,
 899         Crypto::GObjUPtr &obj,
 900         DataType &objDataType)
 901 {
 902         auto &handler = selectDatabase(cred, label);
 903
 904         // use client label if not explicitly provided
 905         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
 906
 907         if (!isNameValid(name) || !isLabelValid(ownerLabel))
 908                 return CKM_API_ERROR_INPUT_PARAM;
 909
 910         // read row
 911         DB::Crypto::Transaction transaction(&handler.database);
 912         DB::Row row;
 913         int retCode = readSingleRow(name, ownerLabel, dataType, handler.database, row);
 914
 915         if (CKM_API_SUCCESS != retCode)
 916                 return retCode;
 917
 918         objDataType = row.dataType;
 919
 920         // check access rights
 921         retCode = checkDataPermissionsHelper(cred, name, ownerLabel, cred.smackLabel,
 922                                                                                  row, exportFlag, handler.database);
 923
 924         if (CKM_API_SUCCESS != retCode)
 925                 return retCode;
 926
 927         // load app key if needed
 928         retCode = loadAppKey(handler, row.ownerLabel);
 929
 930         if (CKM_API_SUCCESS != retCode)
 931                 return retCode;
 932
 933         obj = rowToObject(handler, std::move(row), password);
 934         // rowToObject may modify db
 935         transaction.commit();
 936
 937         return CKM_API_SUCCESS;
 938 }
 939
 940 RawBuffer CKMLogic::getData(
 941         const Credentials &cred,
 942         int commandId,
 943         DataType dataType,
 944         const Name &name,
 945         const Label &label,
 946         const Password &password)
 947 {
 948         int retCode = CKM_API_SUCCESS;
 949         DB::Row row;
 950         DataType objDataType;
 951
 952         try {
 953                 Crypto::GObjUPtr obj;
 954                 retCode = readDataHelper(true, cred, dataType, name, label, password, obj,
 955                                                                  objDataType);
 956
 957                 if (retCode == CKM_API_SUCCESS)
 958                         row.data = std::move(obj->getBinary());
 959         } catch (const Exc::Exception &e) {
 960                 retCode = e.error();
 961         } catch (const CKM::Exception &e) {
 962                 LogError("CKM::Exception: " << e.GetMessage());
 963                 retCode = CKM_API_ERROR_SERVER_ERROR;
 964         }
 965
 966         if (CKM_API_SUCCESS != retCode) {
 967                 row.data.clear();
 968                 row.dataType = dataType;
 969         }
 970
 971         auto response = MessageBuffer::Serialize(static_cast<int>(LogicCommand::GET),
 972                                         commandId,
 973                                         retCode,
 974                                         static_cast<int>(objDataType),
 975                                         row.data);
 976         return response.Pop();
 977 }
 978
 979 int CKMLogic::getPKCS12Helper(
 980         const Credentials &cred,
 981         const Name &name,
 982         const Label &label,
 983         const Password &keyPassword,
 984         const Password &certPassword,
 985         KeyShPtr &privKey,
 986         CertificateShPtr &cert,
 987         CertificateShPtrVector &caChain)
 988 {
 989         int retCode;
 990
 991         // read private key (mandatory)
 992         Crypto::GObjUPtr keyObj;
 993         retCode = readDataHelper(true, cred, DataType::DB_KEY_FIRST, name, label,
 994                                                          keyPassword, keyObj);
 995
 996         if (retCode != CKM_API_SUCCESS)
 997                 return retCode;
 998
 999         privKey = CKM::Key::create(keyObj->getBinary());
1000
1001         // read certificate (mandatory)
1002         Crypto::GObjUPtr certObj;
1003         retCode = readDataHelper(true, cred, DataType::CERTIFICATE, name, label,
1004                                                          certPassword, certObj);
1005
1006         if (retCode != CKM_API_SUCCESS)
1007                 return retCode;
1008
1009         cert = CKM::Certificate::create(certObj->getBinary(), DataFormat::FORM_DER);
1010
1011         // read CA cert chain (optional)
1012         Crypto::GObjUPtrVector caChainObjs;
1013         retCode = readDataHelper(true, cred, DataType::DB_CHAIN_FIRST, name, label,
1014                                                          certPassword, caChainObjs);
1015
1016         if (retCode != CKM_API_SUCCESS &&
1017                         retCode != CKM_API_ERROR_DB_ALIAS_UNKNOWN)
1018                 return retCode;
1019
1020         for (auto &caCertObj : caChainObjs)
1021                 caChain.push_back(CKM::Certificate::create(caCertObj->getBinary(),
1022                                                   DataFormat::FORM_DER));
1023
1024         // if anything found, return it
1025         if (privKey || cert || caChain.size() > 0)
1026                 retCode = CKM_API_SUCCESS;
1027
1028         return retCode;
1029 }
1030
1031 RawBuffer CKMLogic::getPKCS12(
1032         const Credentials &cred,
1033         int commandId,
1034         const Name &name,
1035         const Label &label,
1036         const Password &keyPassword,
1037         const Password &certPassword)
1038 {
1039         int retCode = CKM_API_ERROR_UNKNOWN;
1040
1041         PKCS12Serializable output;
1042
1043         try {
1044                 KeyShPtr privKey;
1045                 CertificateShPtr cert;
1046                 CertificateShPtrVector caChain;
1047                 retCode = getPKCS12Helper(cred, name, label, keyPassword, certPassword, privKey,
1048                                                                   cert, caChain);
1049
1050                 // prepare response
1051                 if (retCode == CKM_API_SUCCESS)
1052                         output = PKCS12Serializable(std::move(privKey), std::move(cert),
1053                                                                                 std::move(caChain));
1054         } catch (const Exc::Exception &e) {
1055                 retCode = e.error();
1056         } catch (const CKM::Exception &e) {
1057                 LogError("CKM::Exception: " << e.GetMessage());
1058                 retCode = CKM_API_ERROR_SERVER_ERROR;
1059         }
1060
1061         auto response = MessageBuffer::Serialize(static_cast<int>
1062                                         (LogicCommand::GET_PKCS12),
1063                                         commandId,
1064                                         retCode,
1065                                         output);
1066         return response.Pop();
1067 }
1068
1069 int CKMLogic::getDataListHelper(const Credentials &cred,
1070                                                                 const DataType dataType,
1071                                                                 LabelNameVector &labelNameVector)
1072 {
1073         int retCode = CKM_API_ERROR_DB_LOCKED;
1074
1075         if (0 < m_userDataMap.count(cred.clientUid)) {
1076                 auto &database = m_userDataMap[cred.clientUid].database;
1077
1078                 try {
1079                         LabelNameVector tmpVector;
1080
1081                         if (dataType.isKey()) {
1082                                 // list all key types
1083                                 database.listNames(cred.smackLabel,
1084                                                                    tmpVector,
1085                                                                    DataType::DB_KEY_FIRST,
1086                                                                    DataType::DB_KEY_LAST);
1087                         } else {
1088                                 // list anything else
1089                                 database.listNames(cred.smackLabel,
1090                                                                    tmpVector,
1091                                                                    dataType);
1092                         }
1093
1094                         labelNameVector.insert(labelNameVector.end(), tmpVector.begin(),
1095                                                                    tmpVector.end());
1096                         retCode = CKM_API_SUCCESS;
1097                 } catch (const CKM::Exception &e) {
1098                         LogError("Error: " << e.GetMessage());
1099                         retCode = CKM_API_ERROR_DB_ERROR;
1100                 } catch (const Exc::Exception &e) {
1101                         retCode = e.error();
1102                 }
1103         }
1104
1105         return retCode;
1106 }
1107
1108 RawBuffer CKMLogic::getDataList(
1109         const Credentials &cred,
1110         int commandId,
1111         DataType dataType)
1112 {
1113         LabelNameVector systemVector;
1114         LabelNameVector userVector;
1115         LabelNameVector labelNameVector;
1116
1117         int retCode = unlockSystemDB();
1118
1119         if (CKM_API_SUCCESS == retCode) {
1120                 // system database
1121                 if (m_accessControl.isSystemService(cred)) {
1122                         // lookup system DB
1123                         retCode = getDataListHelper(Credentials(SYSTEM_DB_UID,
1124                                                                                                         OWNER_ID_SYSTEM),
1125                                                                                 dataType,
1126                                                                                 systemVector);
1127                 } else {
1128                         // user - lookup system, then client DB
1129                         retCode = getDataListHelper(Credentials(SYSTEM_DB_UID,
1130                                                                                                         cred.smackLabel),
1131                                                                                 dataType,
1132                                                                                 systemVector);
1133
1134                         // private database
1135                         if (retCode == CKM_API_SUCCESS) {
1136                                 retCode = getDataListHelper(cred,
1137                                                                                         dataType,
1138                                                                                         userVector);
1139                         }
1140                 }
1141         }
1142
1143         if (retCode == CKM_API_SUCCESS) {
1144                 labelNameVector.insert(labelNameVector.end(), systemVector.begin(),
1145                                                            systemVector.end());
1146                 labelNameVector.insert(labelNameVector.end(), userVector.begin(),
1147                                                            userVector.end());
1148         }
1149
1150         auto response = MessageBuffer::Serialize(static_cast<int>
1151                                         (LogicCommand::GET_LIST),
1152                                         commandId,
1153                                         retCode,
1154                                         static_cast<int>(dataType),
1155                                         labelNameVector);
1156         return response.Pop();
1157 }
1158
1159 int CKMLogic::importInitialData(
1160         const Name &name,
1161         const Crypto::Data &data,
1162         const Crypto::DataEncryption &enc,
1163         const Policy &policy)
1164 {
1165         try {
1166                 // Inital values are always imported with root credentials. Label is not important.
1167                 Credentials rootCred(0, "");
1168
1169                 auto &handler = selectDatabase(rootCred, OWNER_ID_SYSTEM);
1170
1171                 // check if save is possible
1172                 DB::Crypto::Transaction transaction(&handler.database);
1173                 int retCode = checkSaveConditions(rootCred, handler, name, OWNER_ID_SYSTEM);
1174
1175                 if (retCode != CKM_API_SUCCESS)
1176                         return retCode;
1177
1178                 Crypto::GStore &store =
1179                         m_decider.getStore(data.type, policy.extractable, !enc.encryptedKey.empty());
1180
1181                 Token token;
1182
1183                 if (enc.encryptedKey.empty()) {
1184                         Crypto::Data binaryData;
1185
1186                         if (CKM_API_SUCCESS != (retCode = toBinaryData(data, binaryData)))
1187                                 return retCode;
1188
1189                         token = store.import(binaryData,
1190                                                                  m_accessControl.isCCMode() ? "" : policy.password);
1191                 } else {
1192                         token = store.importEncrypted(data,
1193                                                                                   m_accessControl.isCCMode() ? "" : policy.password, enc);
1194                 }
1195
1196                 DB::Row row(std::move(token), name, OWNER_ID_SYSTEM,
1197                                         static_cast<int>(policy.extractable));
1198                 handler.crypto.encryptRow(row);
1199
1200                 handler.database.saveRow(row);
1201                 transaction.commit();
1202         } catch (const Exc::Exception &e) {
1203                 return e.error();
1204         } catch (const CKM::Exception &e) {
1205                 LogError("CKM::Exception: " << e.GetMessage());
1206                 return CKM_API_ERROR_SERVER_ERROR;
1207         } catch (const std::exception &e) {
1208                 LogError("Std::exception: " << e.what());
1209                 return CKM_API_ERROR_SERVER_ERROR;
1210         }
1211
1212         return CKM_API_SUCCESS;
1213 }
1214
1215 int CKMLogic::saveDataHelper(
1216         const Credentials &cred,
1217         const Name &name,
1218         const Label &label,
1219         const Crypto::Data &data,
1220         const PolicySerializable &policy)
1221 {
1222         auto &handler = selectDatabase(cred, label);
1223
1224         // use client label if not explicitly provided
1225         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
1226
1227         if (m_accessControl.isSystemService(cred) &&
1228                         ownerLabel.compare(OWNER_ID_SYSTEM) != 0)
1229                 return CKM_API_ERROR_INPUT_PARAM;
1230
1231         // check if save is possible
1232         DB::Crypto::Transaction transaction(&handler.database);
1233         int retCode = checkSaveConditions(cred, handler, name, ownerLabel);
1234
1235         if (retCode != CKM_API_SUCCESS)
1236                 return retCode;
1237
1238         // save the data
1239         DB::Row encryptedRow = createEncryptedRow(handler.crypto, name, ownerLabel,
1240                                                    data, policy);
1241         handler.database.saveRow(encryptedRow);
1242
1243         transaction.commit();
1244         return CKM_API_SUCCESS;
1245 }
1246
1247 int CKMLogic::saveDataHelper(
1248         const Credentials &cred,
1249         const Name &name,
1250         const Label &label,
1251         const PKCS12Serializable &pkcs,
1252         const PolicySerializable &keyPolicy,
1253         const PolicySerializable &certPolicy)
1254 {
1255         auto &handler = selectDatabase(cred, label);
1256
1257         // use client label if not explicitly provided
1258         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
1259
1260         if (m_accessControl.isSystemService(cred) &&
1261                         ownerLabel.compare(OWNER_ID_SYSTEM) != 0)
1262                 return CKM_API_ERROR_INPUT_PARAM;
1263
1264         // check if save is possible
1265         DB::Crypto::Transaction transaction(&handler.database);
1266         int retCode = checkSaveConditions(cred, handler, name, ownerLabel);
1267
1268         if (retCode != CKM_API_SUCCESS)
1269                 return retCode;
1270
1271         // extract and encrypt the data
1272         DB::RowVector encryptedRows;
1273         retCode = extractPKCS12Data(handler.crypto, name, ownerLabel, pkcs, keyPolicy,
1274                                                                 certPolicy, encryptedRows);
1275
1276         if (retCode != CKM_API_SUCCESS)
1277                 return retCode;
1278
1279         // save the data
1280         handler.database.saveRows(name, ownerLabel, encryptedRows);
1281         transaction.commit();
1282
1283         return CKM_API_SUCCESS;
1284 }
1285
1286
1287 int CKMLogic::createKeyAESHelper(
1288         const Credentials &cred,
1289         const int size,
1290         const Name &name,
1291         const Label &label,
1292         const PolicySerializable &policy)
1293 {
1294         auto &handler = selectDatabase(cred, label);
1295
1296         // use client label if not explicitly provided
1297         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
1298
1299         if (m_accessControl.isSystemService(cred) &&
1300                         ownerLabel.compare(OWNER_ID_SYSTEM) != 0)
1301                 return CKM_API_ERROR_INPUT_PARAM;
1302
1303         // check if save is possible
1304         DB::Crypto::Transaction transaction(&handler.database);
1305         int retCode = checkSaveConditions(cred, handler, name, ownerLabel);
1306
1307         if (retCode != CKM_API_SUCCESS)
1308                 return retCode;
1309
1310         // create key in store
1311         CryptoAlgorithm keyGenAlgorithm;
1312         keyGenAlgorithm.setParam(ParamName::ALGO_TYPE, AlgoType::AES_GEN);
1313         keyGenAlgorithm.setParam(ParamName::GEN_KEY_LEN, size);
1314         Token key = m_decider.getStore(DataType::KEY_AES,
1315                                                                    policy.extractable).generateSKey(keyGenAlgorithm, policy.password);
1316
1317         // save the data
1318         DB::Row row(std::move(key), name, ownerLabel,
1319                                 static_cast<int>(policy.extractable));
1320         handler.crypto.encryptRow(row);
1321
1322         handler.database.saveRow(row);
1323
1324         transaction.commit();
1325         return CKM_API_SUCCESS;
1326 }
1327
1328 int CKMLogic::createKeyPairHelper(
1329         const Credentials &cred,
1330         const CryptoAlgorithmSerializable &keyGenParams,
1331         const Name &namePrivate,
1332         const Label &labelPrivate,
1333         const Name &namePublic,
1334         const Label &labelPublic,
1335         const PolicySerializable &policyPrivate,
1336         const PolicySerializable &policyPublic)
1337 {
1338         auto &handlerPriv = selectDatabase(cred, labelPrivate);
1339         auto &handlerPub = selectDatabase(cred, labelPublic);
1340
1341         AlgoType keyType = AlgoType::RSA_GEN;
1342
1343         if (!keyGenParams.getParam(ParamName::ALGO_TYPE, keyType))
1344                 ThrowErr(Exc::InputParam, "Error, parameter ALGO_TYPE not found.");
1345
1346         DataType dt(keyType);
1347
1348         if (!dt.isKey())
1349                 ThrowErr(Exc::InputParam, "Error, parameter ALGO_TYPE with wrong value.");
1350
1351         // use client label if not explicitly provided
1352         const Label &ownerLabelPrv = labelPrivate.empty() ? cred.smackLabel :
1353                                                                  labelPrivate;
1354
1355         if (m_accessControl.isSystemService(cred) &&
1356                         ownerLabelPrv.compare(OWNER_ID_SYSTEM) != 0)
1357                 return CKM_API_ERROR_INPUT_PARAM;
1358
1359         const Label &ownerLabelPub = labelPublic.empty() ? cred.smackLabel :
1360                                                                  labelPublic;
1361
1362         if (m_accessControl.isSystemService(cred) &&
1363                         ownerLabelPub.compare(OWNER_ID_SYSTEM) != 0)
1364                 return CKM_API_ERROR_INPUT_PARAM;
1365
1366         bool exportable = policyPrivate.extractable || policyPublic.extractable;
1367         TokenPair keys = m_decider.getStore(dt, exportable).generateAKey(keyGenParams,
1368                                          policyPrivate.password,
1369                                          policyPublic.password);
1370
1371         DB::Crypto::Transaction transactionPriv(&handlerPriv.database);
1372         // in case the same database is used for private and public - the second
1373         // transaction will not be executed
1374         DB::Crypto::Transaction transactionPub(&handlerPub.database);
1375
1376         int retCode;
1377         retCode = checkSaveConditions(cred, handlerPriv, namePrivate, ownerLabelPrv);
1378
1379         if (CKM_API_SUCCESS != retCode)
1380                 return retCode;
1381
1382         retCode = checkSaveConditions(cred, handlerPub, namePublic, ownerLabelPub);
1383
1384         if (CKM_API_SUCCESS != retCode)
1385                 return retCode;
1386
1387         // save the data
1388         DB::Row rowPrv(std::move(keys.first), namePrivate, ownerLabelPrv,
1389                                    static_cast<int>(policyPrivate.extractable));
1390         handlerPriv.crypto.encryptRow(rowPrv);
1391         handlerPriv.database.saveRow(rowPrv);
1392
1393         DB::Row rowPub(std::move(keys.second), namePublic, ownerLabelPub,
1394                                    static_cast<int>(policyPublic.extractable));
1395         handlerPub.crypto.encryptRow(rowPub);
1396         handlerPub.database.saveRow(rowPub);
1397
1398         transactionPub.commit();
1399         transactionPriv.commit();
1400         return CKM_API_SUCCESS;
1401 }
1402
1403 RawBuffer CKMLogic::createKeyPair(
1404         const Credentials &cred,
1405         int commandId,
1406         const CryptoAlgorithmSerializable &keyGenParams,
1407         const Name &namePrivate,
1408         const Label &labelPrivate,
1409         const Name &namePublic,
1410         const Label &labelPublic,
1411         const PolicySerializable &policyPrivate,
1412         const PolicySerializable &policyPublic)
1413 {
1414         int retCode = CKM_API_SUCCESS;
1415
1416         try {
1417                 retCode = createKeyPairHelper(
1418                                           cred,
1419                                           keyGenParams,
1420                                           namePrivate,
1421                                           labelPrivate,
1422                                           namePublic,
1423                                           labelPublic,
1424                                           policyPrivate,
1425                                           policyPublic);
1426         } catch (const Exc::Exception &e) {
1427                 retCode = e.error();
1428         } catch (const CKM::Exception &e) {
1429                 LogError("CKM::Exception: " << e.GetMessage());
1430                 retCode = CKM_API_ERROR_SERVER_ERROR;
1431         }
1432
1433         return MessageBuffer::Serialize(static_cast<int>(LogicCommand::CREATE_KEY_PAIR),
1434                                                                         commandId, retCode).Pop();
1435 }
1436
1437 RawBuffer CKMLogic::createKeyAES(
1438         const Credentials &cred,
1439         int commandId,
1440         const int size,
1441         const Name &name,
1442         const Label &label,
1443         const PolicySerializable &policy)
1444 {
1445         int retCode = CKM_API_SUCCESS;
1446
1447         try {
1448                 retCode = createKeyAESHelper(cred, size, name, label, policy);
1449         } catch (const Exc::Exception &e) {
1450                 retCode = e.error();
1451         } catch (std::invalid_argument &e) {
1452                 LogDebug("invalid argument error: " << e.what());
1453                 retCode = CKM_API_ERROR_INPUT_PARAM;
1454         } catch (const CKM::Exception &e) {
1455                 LogError("CKM::Exception: " << e.GetMessage());
1456                 retCode = CKM_API_ERROR_SERVER_ERROR;
1457         }
1458
1459         return MessageBuffer::Serialize(static_cast<int>(LogicCommand::CREATE_KEY_AES),
1460                                                                         commandId, retCode).Pop();
1461 }
1462
1463 int CKMLogic::readCertificateHelper(
1464         const Credentials &cred,
1465         const LabelNameVector &labelNameVector,
1466         CertificateImplVector &certVector)
1467 {
1468         DB::Row row;
1469
1470         for (auto &i : labelNameVector) {
1471                 // certificates can't be protected with custom user password
1472                 Crypto::GObjUPtr obj;
1473                 int ec;
1474                 ec = readDataHelper(true,
1475                                                         cred,
1476                                                         DataType::CERTIFICATE,
1477                                                         i.second,
1478                                                         i.first,
1479                                                         Password(),
1480                                                         obj);
1481
1482                 if (ec != CKM_API_SUCCESS)
1483                         return ec;
1484
1485                 certVector.emplace_back(obj->getBinary(), DataFormat::FORM_DER);
1486
1487                 // try to read chain certificates (if present)
1488                 Crypto::GObjUPtrVector caChainObjs;
1489                 ec = readDataHelper(true,
1490                                                         cred,
1491                                                         DataType::DB_CHAIN_FIRST,
1492                                                         i.second,
1493                                                         i.first,
1494                                                         CKM::Password(),
1495                                                         caChainObjs);
1496
1497                 if (ec != CKM_API_SUCCESS && ec != CKM_API_ERROR_DB_ALIAS_UNKNOWN)
1498                         return ec;
1499
1500                 for (auto &caCertObj : caChainObjs)
1501                         certVector.emplace_back(caCertObj->getBinary(), DataFormat::FORM_DER);
1502         }
1503
1504         return CKM_API_SUCCESS;
1505 }
1506
1507 int CKMLogic::getCertificateChainHelper(
1508         const CertificateImpl &cert,
1509         const RawBufferVector &untrustedCertificates,
1510         const RawBufferVector &trustedCertificates,
1511         bool useTrustedSystemCertificates,
1512         RawBufferVector &chainRawVector)
1513 {
1514         CertificateImplVector untrustedCertVector;
1515         CertificateImplVector trustedCertVector;
1516         CertificateImplVector chainVector;
1517
1518         if (cert.empty())
1519                 return CKM_API_ERROR_INPUT_PARAM;
1520
1521         for (auto &e : untrustedCertificates) {
1522                 CertificateImpl c(e, DataFormat::FORM_DER);
1523
1524                 if (c.empty())
1525                         return CKM_API_ERROR_INPUT_PARAM;
1526
1527                 untrustedCertVector.push_back(std::move(c));
1528         }
1529
1530         for (auto &e : trustedCertificates) {
1531                 CertificateImpl c(e, DataFormat::FORM_DER);
1532
1533                 if (c.empty())
1534                         return CKM_API_ERROR_INPUT_PARAM;
1535
1536                 trustedCertVector.push_back(std::move(c));
1537         }
1538
1539         CertificateStore store;
1540         int retCode = store.verifyCertificate(cert,
1541                                                                                   untrustedCertVector,
1542                                                                                   trustedCertVector,
1543                                                                                   useTrustedSystemCertificates,
1544                                                                                   m_accessControl.isCCMode(),
1545                                                                                   chainVector);
1546
1547         if (retCode != CKM_API_SUCCESS)
1548                 return retCode;
1549
1550         for (auto &e : chainVector)
1551                 chainRawVector.push_back(e.getDER());
1552
1553         return CKM_API_SUCCESS;
1554 }
1555
1556 int CKMLogic::getCertificateChainHelper(
1557         const Credentials &cred,
1558         const CertificateImpl &cert,
1559         const LabelNameVector &untrusted,
1560         const LabelNameVector &trusted,
1561         bool useTrustedSystemCertificates,
1562         RawBufferVector &chainRawVector)
1563 {
1564         CertificateImplVector untrustedCertVector;
1565         CertificateImplVector trustedCertVector;
1566         CertificateImplVector chainVector;
1567         DB::Row row;
1568
1569         if (cert.empty())
1570                 return CKM_API_ERROR_INPUT_PARAM;
1571
1572         int retCode = readCertificateHelper(cred, untrusted, untrustedCertVector);
1573
1574         if (retCode != CKM_API_SUCCESS)
1575                 return retCode;
1576
1577         retCode = readCertificateHelper(cred, trusted, trustedCertVector);
1578
1579         if (retCode != CKM_API_SUCCESS)
1580                 return retCode;
1581
1582         CertificateStore store;
1583         retCode = store.verifyCertificate(cert,
1584                                                                           untrustedCertVector,
1585                                                                           trustedCertVector,
1586                                                                           useTrustedSystemCertificates,
1587                                                                           m_accessControl.isCCMode(),
1588                                                                           chainVector);
1589
1590         if (retCode != CKM_API_SUCCESS)
1591                 return retCode;
1592
1593         for (auto &i : chainVector)
1594                 chainRawVector.push_back(i.getDER());
1595
1596         return CKM_API_SUCCESS;
1597 }
1598
1599 RawBuffer CKMLogic::getCertificateChain(
1600         const Credentials & /*cred*/,
1601         int commandId,
1602         const RawBuffer &certificate,
1603         const RawBufferVector &untrustedCertificates,
1604         const RawBufferVector &trustedCertificates,
1605         bool useTrustedSystemCertificates)
1606 {
1607         CertificateImpl cert(certificate, DataFormat::FORM_DER);
1608         RawBufferVector chainRawVector;
1609         int retCode = CKM_API_ERROR_UNKNOWN;
1610
1611         try {
1612                 retCode = getCertificateChainHelper(cert,
1613                                                                                         untrustedCertificates,
1614                                                                                         trustedCertificates,
1615                                                                                         useTrustedSystemCertificates,
1616                                                                                         chainRawVector);
1617         } catch (const Exc::Exception &e) {
1618                 retCode = e.error();
1619         } catch (const std::exception &e) {
1620                 LogError("STD exception " << e.what());
1621                 retCode = CKM_API_ERROR_SERVER_ERROR;
1622         } catch (...) {
1623                 LogError("Unknown error.");
1624         }
1625
1626         auto response = MessageBuffer::Serialize(static_cast<int>
1627                                         (LogicCommand::GET_CHAIN_CERT),
1628                                         commandId,
1629                                         retCode,
1630                                         chainRawVector);
1631         return response.Pop();
1632 }
1633
1634 RawBuffer CKMLogic::getCertificateChain(
1635         const Credentials &cred,
1636         int commandId,
1637         const RawBuffer &certificate,
1638         const LabelNameVector &untrustedCertificates,
1639         const LabelNameVector &trustedCertificates,
1640         bool useTrustedSystemCertificates)
1641 {
1642         int retCode = CKM_API_ERROR_UNKNOWN;
1643         CertificateImpl cert(certificate, DataFormat::FORM_DER);
1644         RawBufferVector chainRawVector;
1645
1646         try {
1647                 retCode = getCertificateChainHelper(cred,
1648                                                                                         cert,
1649                                                                                         untrustedCertificates,
1650                                                                                         trustedCertificates,
1651                                                                                         useTrustedSystemCertificates,
1652                                                                                         chainRawVector);
1653         } catch (const Exc::Exception &e) {
1654                 retCode = e.error();
1655         } catch (const std::exception &e) {
1656                 LogError("STD exception " << e.what());
1657                 retCode = CKM_API_ERROR_SERVER_ERROR;
1658         } catch (...) {
1659                 LogError("Unknown error.");
1660         }
1661
1662         auto response = MessageBuffer::Serialize(static_cast<int>
1663                                         (LogicCommand::GET_CHAIN_ALIAS),
1664                                         commandId,
1665                                         retCode,
1666                                         chainRawVector);
1667         return response.Pop();
1668 }
1669
1670 RawBuffer CKMLogic::createSignature(
1671         const Credentials &cred,
1672         int commandId,
1673         const Name &privateKeyName,
1674         const Label &ownerLabel,
1675         const Password &password,           // password for private_key
1676         const RawBuffer &message,
1677         const CryptoAlgorithm &cryptoAlg)
1678 {
1679         DB::Row row;
1680         RawBuffer signature;
1681
1682         int retCode = CKM_API_SUCCESS;
1683
1684         try {
1685                 Crypto::GObjUPtr obj;
1686                 retCode = readDataHelper(false, cred, DataType::DB_KEY_FIRST, privateKeyName,
1687                                                                  ownerLabel, password, obj);
1688
1689                 if (retCode == CKM_API_SUCCESS)
1690                         signature = obj->sign(cryptoAlg, message);
1691         } catch (const Exc::Exception &e) {
1692                 retCode = e.error();
1693         } catch (const CKM::Exception &e) {
1694                 LogError("Unknown CKM::Exception: " << e.GetMessage());
1695                 retCode = CKM_API_ERROR_SERVER_ERROR;
1696         } catch (const std::exception &e) {
1697                 LogError("STD exception " << e.what());
1698                 retCode = CKM_API_ERROR_SERVER_ERROR;
1699         }
1700
1701         auto response = MessageBuffer::Serialize(static_cast<int>
1702                                         (LogicCommand::CREATE_SIGNATURE),
1703                                         commandId,
1704                                         retCode,
1705                                         signature);
1706         return response.Pop();
1707 }
1708
1709 RawBuffer CKMLogic::verifySignature(
1710         const Credentials &cred,
1711         int commandId,
1712         const Name &publicKeyOrCertName,
1713         const Label &ownerLabel,
1714         const Password &password,           // password for public_key (optional)
1715         const RawBuffer &message,
1716         const RawBuffer &signature,
1717         const CryptoAlgorithm &params)
1718 {
1719         int retCode = CKM_API_ERROR_VERIFICATION_FAILED;
1720
1721         try {
1722                 DB::Row row;
1723
1724                 // try certificate first - looking for a public key.
1725                 // in case of PKCS, pub key from certificate will be found first
1726                 // rather than private key from the same PKCS.
1727                 Crypto::GObjUPtr obj;
1728                 retCode = readDataHelper(false, cred, DataType::CERTIFICATE,
1729                                                                  publicKeyOrCertName, ownerLabel, password, obj);
1730
1731                 if (retCode == CKM_API_ERROR_DB_ALIAS_UNKNOWN)
1732                         retCode = readDataHelper(false, cred, DataType::DB_KEY_FIRST,
1733                                                                          publicKeyOrCertName, ownerLabel, password, obj);
1734
1735                 if (retCode == CKM_API_SUCCESS)
1736                         retCode = obj->verify(params, message, signature);
1737         } catch (const Exc::Exception &e) {
1738                 retCode = e.error();
1739         } catch (const CKM::Exception &e) {
1740                 LogError("Unknown CKM::Exception: " << e.GetMessage());
1741                 retCode = CKM_API_ERROR_SERVER_ERROR;
1742         }
1743
1744         auto response = MessageBuffer::Serialize(static_cast<int>
1745                                         (LogicCommand::VERIFY_SIGNATURE),
1746                                         commandId,
1747                                         retCode);
1748         return response.Pop();
1749 }
1750
1751 int CKMLogic::setPermissionHelper(
1752         const Credentials &cred,                // who's the client
1753         const Name &name,
1754         const Label &label,                     // who's the owner
1755         const Label &accessorLabel,             // who will get the access
1756         const PermissionMask permissionMask)
1757 {
1758         auto &handler = selectDatabase(cred, label);
1759
1760         // we don't know the client
1761         if (cred.smackLabel.empty() || !isLabelValid(cred.smackLabel))
1762                 return CKM_API_ERROR_INPUT_PARAM;
1763
1764         // use client label if not explicitly provided
1765         const Label &ownerLabel = label.empty() ? cred.smackLabel : label;
1766
1767         // verify name and label are correct
1768         if (!isNameValid(name) || !isLabelValid(ownerLabel) ||
1769                         !isLabelValid(accessorLabel))
1770                 return CKM_API_ERROR_INPUT_PARAM;
1771
1772         // currently we don't support modification of owner's permissions to his own rows
1773         if (ownerLabel == accessorLabel)
1774                 return CKM_API_ERROR_INPUT_PARAM;
1775
1776         // system database does not support write/remove permissions
1777         if ((0 == ownerLabel.compare(OWNER_ID_SYSTEM)) &&
1778                         (permissionMask & Permission::REMOVE))
1779                 return CKM_API_ERROR_INPUT_PARAM;
1780
1781         // can the client modify permissions to owner's row?
1782         int retCode = m_accessControl.canModify(cred, ownerLabel);
1783
1784         if (retCode != CKM_API_SUCCESS)
1785                 return retCode;
1786
1787         DB::Crypto::Transaction transaction(&handler.database);
1788
1789         if (!handler.database.isNameLabelPresent(name, ownerLabel))
1790                 return CKM_API_ERROR_DB_ALIAS_UNKNOWN;
1791
1792         // removing non-existing permissions: fail
1793         if (permissionMask == Permission::NONE) {
1794                 if (!handler.database.getPermissionRow(name, ownerLabel, accessorLabel))
1795                         return CKM_API_ERROR_INPUT_PARAM;
1796         }
1797
1798         // set permissions to the row owned by ownerLabel for accessorLabel
1799         handler.database.setPermission(name, ownerLabel, accessorLabel, permissionMask);
1800         transaction.commit();
1801
1802         return CKM_API_SUCCESS;
1803 }
1804
1805 RawBuffer CKMLogic::setPermission(
1806         const Credentials &cred,
1807         const int command,
1808         const int msgID,
1809         const Name &name,
1810         const Label &label,
1811         const Label &accessorLabel,
1812         const PermissionMask permissionMask)
1813 {
1814         int retCode;
1815
1816         try {
1817                 retCode = setPermissionHelper(cred, name, label, accessorLabel, permissionMask);
1818         } catch (const Exc::Exception &e) {
1819                 retCode = e.error();
1820         } catch (const CKM::Exception &e) {
1821                 LogError("Error: " << e.GetMessage());
1822                 retCode = CKM_API_ERROR_DB_ERROR;
1823         }
1824
1825         return MessageBuffer::Serialize(command, msgID, retCode).Pop();
1826 }
1827
1828 int CKMLogic::loadAppKey(UserData &handle, const Label &appLabel)
1829 {
1830         if (!handle.crypto.haveKey(appLabel)) {
1831                 RawBuffer key;
1832                 auto key_optional = handle.database.getKey(appLabel);
1833
1834                 if (!key_optional) {
1835                         LogError("No key for given label in database");
1836                         return CKM_API_ERROR_DB_ERROR;
1837                 }
1838
1839                 key = *key_optional;
1840                 key = handle.keyProvider.getPureDEK(key);
1841                 handle.crypto.pushKey(appLabel, key);
1842         }
1843
1844         return CKM_API_SUCCESS;
1845 }
1846
1847 } // namespace CKM
1848