server/internal-encryption.cpp

   1 /*
   2  *  Copyright (c) 2015-2019 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 #include <set>
  17 #include <algorithm>
  18 #include <memory>
  19 #include <mutex>
  20 #include <condition_variable>
  21 #include <list>
  22
  23 #include <fstream>
  24 #include <fcntl.h>
  25 #include <signal.h>
  26 #include <unistd.h>
  27 #include <sys/mount.h>
  28 #include <sys/reboot.h>
  29 #include <limits.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32
  33 #include <vconf.h>
  34 #include <tzplatform_config.h>
  35 #include <device/power.h>
  36 #include <klay/process.h>
  37 #include <klay/file-user.h>
  38 #include <klay/filesystem.h>
  39 #include <klay/dbus/connection.h>
  40 #include <klay/error.h>
  41 #include <systemd/sd-bus.h>
  42
  43 #include "misc.h"
  44 #include "logger.h"
  45 #include "progress-bar.h"
  46 #include "rmi/common.h"
  47
  48 #include "ext4-tool.h"
  49 #include "internal-encryption.h"
  50 #include "internal-encryption-common.h"
  51 #include "upgrade-support.h"
  52 #include "file-footer.h"
  53
  54 namespace ode {
  55
  56 namespace {
  57
  58 const char *PRIVILEGE_PLATFORM  = "http://tizen.org/privilege/internal/default/platform";
  59
  60 // watches systemd jobs
  61 class JobWatch {
  62 public:
  63         explicit JobWatch(dbus::Connection& systemDBus);
  64         ~JobWatch();
  65
  66         bool waitForJob(const std::string& job);
  67
  68 private:
  69         void jobRemoved(const dbus::Variant& parameters);
  70
  71         struct Job {
  72                 Job(uint32_t id,
  73                         const std::string& job,
  74                         const std::string& unit,
  75                         const std::string& result) : id(id), job(job), unit(unit), result(result) {}
  76                 uint32_t id;
  77                 std::string job;
  78                 std::string unit;
  79                 std::string result;
  80         };
  81
  82         dbus::Connection::SubscriptionId id;
  83         dbus::Connection& systemDBus;
  84         std::list<Job> removedJobs;
  85         std::mutex jobsMutex;
  86         std::condition_variable jobsCv;
  87 };
  88
  89 JobWatch::JobWatch(dbus::Connection& systemDBus) : systemDBus(systemDBus) {
  90         auto callback = [this](dbus::Variant parameters) {
  91                 this->jobRemoved(parameters);
  92         };
  93
  94         id = systemDBus.subscribeSignal("",
  95                                                                         "/org/freedesktop/systemd1",
  96                                                                         "org.freedesktop.systemd1.Manager",
  97                                                                         "JobRemoved",
  98                                                                         callback);
  99 }
 100
 101 JobWatch::~JobWatch() {
 102         systemDBus.unsubscribeSignal(id);
 103 }
 104
 105 bool JobWatch::waitForJob(const std::string& job) {
 106         while(true) {
 107                 std::unique_lock<std::mutex> lock(jobsMutex);
 108                 bool timeout = true;
 109                 auto sec = std::chrono::seconds(1);
 110                 jobsCv.wait_for(lock, 5*sec, [this, &timeout]{
 111                                 if (!removedJobs.empty()) {
 112                                         timeout = false;
 113                                         return true;
 114                                 }
 115                                 return false;});
 116
 117                 if (timeout) {
 118                         ERROR(SINK, "job: " + job + ", result: time out");
 119                         return false;
 120                 }
 121
 122                 while(!removedJobs.empty()) {
 123                         bool match = (removedJobs.front().job == job);
 124                         bool done = (removedJobs.front().result == "done");
 125                         removedJobs.pop_front();
 126                         if (match)
 127                                 return done;
 128                 }
 129         };
 130 }
 131
 132 void JobWatch::jobRemoved(const dbus::Variant& parameters)
 133 {
 134         uint32_t id;
 135         const char* job;
 136         const char* unit;
 137         const char* result;
 138         parameters.get("(uoss)", &id, &job, &unit, &result);
 139         WARN(SINK, "id:" + std::to_string(id) + " job:" + job + " unit:" + unit + " result:" + result);
 140
 141         {
 142                 std::lock_guard<std::mutex> guard(jobsMutex);
 143                 removedJobs.emplace_back(id, job, unit, result);
 144         }
 145         jobsCv.notify_one();
 146 }
 147
 148 void stopSystemdUnits()
 149 {
 150         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 151         dbus::VariantIterator iter;
 152         std::vector<std::string> preprocessUnits;
 153         std::set<std::string> unitsToStop;
 154
 155         auto stopUnit = [&systemDBus](const std::string &unit) {
 156                 JobWatch watch(systemDBus);
 157                 WARN(SINK, "Stopping unit: " + unit);
 158                 const char* job = NULL;
 159                 try {
 160                         systemDBus.methodcall("org.freedesktop.systemd1",
 161                                                                         "/org/freedesktop/systemd1",
 162                                                                         "org.freedesktop.systemd1.Manager",
 163                                                                         "StopUnit",
 164                                                                         -1, "(o)", "(ss)", unit.c_str(), "flush").get("(o)", &job);
 165                         WARN(SINK, "Waiting for job: " + std::string(job));
 166                         if (!watch.waitForJob(job))
 167                                 ERROR(SINK, "Stopping unit: " + unit + " failed");
 168                 } catch (runtime::Exception &e) {
 169                         ERROR(SINK, std::string(e.what()));
 170                 }
 171         };
 172
 173         try {
 174                 systemDBus.methodcall("org.freedesktop.systemd1",
 175                                                                 "/org/freedesktop/systemd1",
 176                                                                 "org.freedesktop.systemd1.Manager",
 177                                                                 "ListUnits",
 178                                                                 -1, "(a(ssssssouso))", "").get("(a(ssssssouso))", &iter);
 179         } catch (runtime::Exception &e) {
 180                 ERROR(SINK, "Get list of systemd unit : " + std::string(e.what()));
 181         }
 182
 183         while (1) {
 184                 unsigned int dataUnit;
 185                 char *dataStr[9];
 186                 int ret;
 187                 ret = iter.get("(ssssssouso)", dataStr, dataStr + 1, dataStr + 2,
 188                                                 dataStr + 3, dataStr + 4, dataStr + 5,
 189                                                 dataStr + 6, &dataUnit, dataStr + 7, dataStr + 8);
 190                 if (!ret)
 191                         break;
 192
 193                 std::string unitName(dataStr[0]);
 194                 if (unitName == "security-manager.socket" ||
 195                                 unitName == "connman.socket" ||
 196                                 unitName == "msg-server.socket") {
 197                         preprocessUnits.insert(preprocessUnits.begin(), unitName);
 198                 } else if (unitName.compare(0, 5, "user@") == 0 ||
 199                                 unitName == "tlm.service" ||
 200                                 unitName == "resourced.service" ||
 201                                 unitName == "security-manager.service") {
 202                         preprocessUnits.push_back(unitName);
 203                 }
 204         }
 205
 206         for (auto unit : preprocessUnits) {
 207                 stopUnit(unit);
 208         }
 209
 210         for (pid_t pid : runtime::FileUser::getList(INTERNAL_PATH, true)) {
 211                 auto pgid = ::getpgid(pid);
 212                 if (pgid > 0 && pid != pgid) {
 213                         WARN(SINK, "PGID doesn't match - pgid : " + std::to_string(pgid) + ", pid : " + std::to_string(pid));
 214                         continue;
 215                 }
 216
 217                 try {
 218                         char *unit = nullptr;
 219                         systemDBus.methodcall("org.freedesktop.systemd1",
 220                                                                         "/org/freedesktop/systemd1",
 221                                                                         "org.freedesktop.systemd1.Manager",
 222                                                                         "GetUnitByPID",
 223                                                                         -1, "(o)", "(u)", (unsigned int)pid)
 224                                                                                 .get("(o)", &unit);
 225
 226                         char* tmp  = NULL;
 227                         int err = sd_bus_path_decode(unit, "/org/freedesktop/systemd1/unit", &tmp);
 228                         if (err <= 0 || tmp == NULL) {
 229                                 ERROR(SINK, "Failed to decode unit name: " + std::string(unit) + " error: " +
 230                                             std::to_string(err));
 231                                 continue;
 232                         }
 233                         std::string unescapedName(tmp);
 234                         free(tmp);
 235
 236                         unitsToStop.insert(unescapedName);
 237                 } catch (runtime::Exception &e) {
 238                         ERROR(SINK, "Killing process: " + std::to_string(pid));
 239                         ::kill(pid, SIGKILL);
 240                 }
 241         }
 242
 243         for (auto unit : unitsToStop) {
 244                 stopUnit(unit);
 245         }
 246 }
 247
 248 void showProgressUI(const std::string type)
 249 {
 250         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 251         std::string unit("ode-progress-ui@"+type+".service");
 252
 253         JobWatch watch(systemDBus);
 254         INFO(SINK, "Start unit: " + unit);
 255
 256         const char* job = NULL;
 257         systemDBus.methodcall("org.freedesktop.systemd1",
 258                                                         "/org/freedesktop/systemd1",
 259                                                         "org.freedesktop.systemd1.Manager",
 260                                                         "StartUnit",
 261                                                         -1, "(o)", "(ss)", unit.c_str(), "replace").get("(o)", &job);
 262
 263         INFO(SINK, "Waiting for job: " + std::string(job));
 264         if (!watch.waitForJob(job))
 265                 ERROR(SINK, "Starting unit: " + unit + " failed");
 266 }
 267
 268 unsigned int getOptions()
 269 {
 270         unsigned int result = 0;
 271         int value;
 272
 273         value = 0;
 274         ::vconf_get_bool(VCONFKEY_ODE_FAST_ENCRYPTION, &value);
 275         if (value) {
 276                 result |= InternalEncryption::Option::IncludeUnusedRegion;
 277         }
 278
 279         return result;
 280 }
 281
 282 void setOptions(unsigned int options)
 283 {
 284         bool value;
 285
 286         if (options & InternalEncryption::Option::IncludeUnusedRegion) {
 287                 value = true;
 288         } else {
 289                 value = false;
 290         }
 291         ::vconf_set_bool(VCONFKEY_ODE_FAST_ENCRYPTION, value);
 292 }
 293
 294 void execAndWait(const std::string &path, std::vector<std::string> &args)
 295 {
 296         runtime::Process proc(path, args);
 297         int ret = proc.execute();
 298         if (ret < 0)
 299                 ERROR(SINK, "Executing " + path + " failed for " + args.back());
 300
 301         ret = proc.waitForFinished();
 302         if (ret < 0 || !WIFEXITED(ret) || WEXITSTATUS(ret) != 0)
 303                 ERROR(SINK, "Waiting for " + path + " failed for " + args.back());
 304 }
 305
 306 bool isPartitionTerminated(const std::string &partition)
 307 {
 308         bool ret = true;
 309         const std::string cmd("fuser -m " + partition + " | grep -o '[0-9]*'");
 310         char *line = nullptr;
 311         size_t len = 0;
 312
 313         FILE *fp = ::popen(cmd.c_str(), "r");
 314         if (fp == nullptr) {
 315                 ERROR(SINK, "Failed to get processes on partition");
 316                 return false;
 317         }
 318
 319         if (::getline(&line, &len, fp) != -1)
 320                 ret = false;
 321
 322         ::free(line);
 323         ::pclose(fp);
 324
 325         return ret;
 326 }
 327
 328 void unmountInternalStorage(const std::string& source)
 329 {
 330         if (::umount2("/opt/usr", MNT_DETACH) == -1) {
 331                 if (errno != EBUSY && errno != EINVAL) {
 332                         throw runtime::Exception("umount() error : " + runtime::GetSystemErrorMessage());
 333                 }
 334         }
 335
 336         do {
 337                 ::sync();
 338                 static const char *fuserPath = "/usr/bin/fuser";
 339                 std::vector<std::string> args = {
 340                         fuserPath, "-m", "-k", "-s", "-SIGTERM", source,
 341                 };
 342                 execAndWait(fuserPath, args);
 343                 ::usleep((useconds_t)((unsigned int)(500)*1000));
 344
 345                 args[4] = "-SIGKILL";
 346                 execAndWait(fuserPath, args);
 347                 ::usleep((useconds_t)((unsigned int)(200)*1000));
 348         } while (!isPartitionTerminated(source));
 349 }
 350
 351 }
 352
 353 InternalEncryptionServer::InternalEncryptionServer(ServerContext& srv,
 354                                                                                                    KeyServer& key) :
 355         server(srv),
 356         keyServer(key)
 357 {
 358         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::setMountPassword)(std::string));
 359         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::mount)(std::vector<unsigned char>, unsigned int));
 360         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::umount)());
 361         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::isMounted)());
 362         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::encrypt)(std::string, unsigned int));
 363         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::decrypt)(std::string));
 364         server.expose(this, "", (int)(InternalEncryptionServer::isPasswordInitialized)());
 365         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::recovery)());
 366         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::initPassword)(std::string));
 367         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::cleanPassword)(std::string));
 368         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::changePassword)(std::string, std::string));
 369         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::verifyPassword)(std::string));
 370         server.expose(this, "", (int)(InternalEncryptionServer::getState)());
 371         server.expose(this, "", (unsigned int)(InternalEncryptionServer::getSupportedOptions)());
 372         server.expose(this, "", (std::string)(InternalEncryptionServer::getDevicePath)());
 373
 374         server.createNotification("InternalEncryptionServer::mount");
 375
 376         std::string source = findDevPath();
 377
 378         if (getState() == State::Encrypted) {
 379                 //"error_partially_encrypted"
 380                 if (!FileFooter::exist(source) && !UpgradeSupport::checkUpgradeFlag()) {
 381                         // Trigger key migration process
 382                         UpgradeSupport::createUpgradeFlag();
 383                 }
 384         }
 385
 386         engine.reset(new INTERNAL_ENGINE(
 387                 source, INTERNAL_PATH,
 388                 ProgressBar([](int v) {
 389                         ::vconf_set_str(VCONFKEY_ODE_ENCRYPT_PROGRESS,
 390                                                         std::to_string(v).c_str());
 391                 })
 392         ));
 393 }
 394
 395 InternalEncryptionServer::~InternalEncryptionServer()
 396 {
 397 }
 398
 399 int InternalEncryptionServer::migrateMasterKey(const std::string& dev, const std::string& password)
 400 {
 401         try {
 402                 BinaryData masterKey = UpgradeSupport::loadMasterKey(dev);
 403
 404                 // encrypt the master key with given password
 405                 return keyServer.changePassword2(dev, masterKey, password);
 406         } catch (const runtime::Exception&) {
 407                 ERROR(SINK, "Failed to load the master key stored during upgrade.");
 408         }
 409
 410         return error::Unknown;
 411 }
 412
 413 int InternalEncryptionServer::setMountPassword(const std::string& password)
 414 {
 415         const std::string& dev = engine->getSource();
 416
 417         // check if upgrade flag exists
 418         if (UpgradeSupport::checkUpgradeFlag()) {
 419                 INFO(SINK, "Upgrade flag detected.");
 420
 421                 int rc = migrateMasterKey(dev, password);
 422                 if (rc != error::None)
 423                         return rc;
 424                 UpgradeSupport::removeUpgradeFlag();
 425         }
 426
 427         return keyServer.get(dev, password, mountKey);
 428 }
 429
 430 int InternalEncryptionServer::mount(const std::vector<unsigned char> &mk, unsigned int options)
 431 {
 432         if (mountKey.empty() && mk.empty()) {
 433                 ERROR(SINK, "You need to set master key first.");
 434                 return error::NoData;
 435         }
 436
 437         BinaryData key = mk.empty() ? mountKey : mk;
 438         mountKey.clear();
 439
 440         if (getState() != State::Encrypted) {
 441                 ERROR(SINK, "Cannot mount, SD partition's state incorrect.");
 442                 return error::NoSuchDevice;
 443         }
 444
 445         if (engine->isMounted()) {
 446                 ERROR(SINK, "Partition already mounted.");
 447                 return error::None;
 448         }
 449
 450         INFO(SINK, "Mounting internal storage.");
 451         try {
 452                 engine->mount(key, getOptions());
 453
 454                 server.notify("InternalEncryptionServer::mount");
 455
 456                 runtime::File("/tmp/.lazy_mount").create(O_WRONLY);
 457                 runtime::File("/tmp/.unlock_mnt").create(O_WRONLY);
 458         } catch (runtime::Exception &e) {
 459                 ERROR(SINK, "Mount failed: " + std::string(e.what()));
 460                 return error::Unknown;
 461         }
 462
 463         return error::None;
 464 }
 465
 466 int InternalEncryptionServer::isMounted()
 467 {
 468         int ret = 0;
 469         try {
 470                 ret = engine->isMounted() ? 1 : 0;
 471         } catch (runtime::Exception &e) {
 472                 ERROR(SINK, "Failed to access the mount flag");
 473                 return error::Unknown;
 474         }
 475         return ret;
 476 }
 477
 478 int InternalEncryptionServer::umount()
 479 {
 480         if (getState() != State::Encrypted) {
 481                 ERROR(SINK, "Cannot umount, partition's state incorrect.");
 482                 return error::NoSuchDevice;
 483         }
 484
 485         if (!engine->isMounted()) {
 486                 ERROR(SINK, "Partition already umounted.");
 487                 return error::None;
 488         }
 489
 490         INFO(SINK, "Closing all processes using internal storage.");
 491         try {
 492                 stopSystemdUnits();
 493                 INFO(SINK, "Umounting internal storage.");
 494                 unmountInternalStorage("/dev/mapper/userdata");
 495                 engine->umount();
 496         } catch (runtime::Exception &e) {
 497                 ERROR(SINK, "Umount failed: " + std::string(e.what()));
 498                 return error::Unknown;
 499         }
 500
 501         return error::None;
 502 }
 503
 504 int InternalEncryptionServer::encrypt(const std::string& password, unsigned int options)
 505 {
 506         if (getState() != State::Unencrypted) {
 507                 ERROR(SINK, "Cannot encrypt, partition's state incorrect.");
 508                 return error::NoSuchDevice;
 509         }
 510
 511         BinaryData masterKey;
 512         int ret = keyServer.get(engine->getSource(), password, masterKey);
 513         if (ret != error::None)
 514                 return ret;
 515
 516         auto encryptWorker = [masterKey, options, this]() {
 517                 try {
 518                         if (::device_power_request_lock(POWER_LOCK_DISPLAY, 0) != 0)
 519                                 ERROR(SINK, "Failed to request to lock display");
 520
 521                         showProgressUI("encrypt");
 522                         ::sleep(1);
 523
 524                         runtime::File file("/opt/etc/.odeprogress");
 525                         file.create(0640);
 526
 527                         std::string source = engine->getSource();
 528                         auto mntPaths = findMountPointsByDevice(source);
 529
 530                         if (!mntPaths.empty()) {
 531                                 INFO(SINK, "Closing all processes using internal storage.");
 532                                 stopSystemdUnits();
 533
 534                                 INFO(SINK, "Unmounting internal storage.");
 535                                 unmountInternalStorage(source);
 536                         }
 537
 538                         INFO(SINK, "Encryption started.");
 539                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_encrypted");
 540                         try {
 541                                 engine->encrypt(masterKey, options);
 542                         } catch (runtime::Exception &e) {
 543                                 ERROR(SINK, e.what());
 544                                 if (!engine->isStarted()) {
 545                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 546                                         file.remove();
 547                                 }
 548                                 ::sync();
 549                                 ::reboot(RB_AUTOBOOT);
 550                         }
 551                         setOptions(options & getSupportedOptions());
 552
 553                         INFO(SINK, "Encryption completed.");
 554                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 555                         server.notify("InternalEncryptionServer::mount");
 556
 557                         file.remove();
 558
 559                         INFO(SINK, "Syncing disk and rebooting.");
 560                         ::sync();
 561                         ::reboot(RB_AUTOBOOT);
 562                 } catch (runtime::Exception &e) {
 563                         ERROR(SINK, "Encryption failed: " + std::string(e.what()));
 564                 }
 565         };
 566
 567         std::thread asyncWork(encryptWorker);
 568         asyncWork.detach();
 569
 570         return error::None;
 571 }
 572
 573 int InternalEncryptionServer::decrypt(const std::string& password)
 574 {
 575         if (getState() != State::Encrypted) {
 576                 ERROR(SINK, "Cannot decrypt, partition's state incorrect.");
 577                 return error::NoSuchDevice;
 578         }
 579
 580         // check if key migration is needed
 581         if (UpgradeSupport::checkUpgradeFlag()) {
 582                 INFO(SINK, "Upgrade flag detected.");
 583                 const std::string& dev = engine->getSource();
 584                 int rc = migrateMasterKey(dev, password);
 585                 if (rc == error::None)
 586                         UpgradeSupport::removeUpgradeFlag();
 587         }
 588
 589         BinaryData masterKey;
 590         int ret = keyServer.get(engine->getSource(), password, masterKey);
 591         if (ret != error::None)
 592                 return ret;
 593
 594         auto decryptWorker = [masterKey, this]() {
 595                 try {
 596                         if (::device_power_request_lock(POWER_LOCK_DISPLAY, 0) != 0)
 597                                 ERROR(SINK, "Failed to request to lock display");
 598
 599                         showProgressUI("decrypt");
 600                         ::sleep(1);
 601
 602                         runtime::File file("/opt/etc/.odeprogress");
 603                         file.create(0640);
 604
 605                         if (engine->isMounted()) {
 606                                 INFO(SINK, "Closing all processes using internal storage.");
 607                                 stopSystemdUnits();
 608
 609                                 INFO(SINK, "Umounting internal storage.");
 610                                 unmountInternalStorage("/dev/mapper/userdata");
 611                                 engine->umount();
 612                         }
 613
 614                         INFO(SINK, "Decryption started.");
 615                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_decrypted");
 616                         try {
 617                                 engine->decrypt(masterKey, getOptions());
 618                         } catch (runtime::Exception &e) {
 619                                 ERROR(SINK, e.what());
 620                                 if (!engine->isStarted()) {
 621                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 622                                         file.remove();
 623                                 }
 624                                 ::sync();
 625                                 ::reboot(RB_AUTOBOOT);
 626                         }
 627
 628                         INFO(SINK, "Decryption complete.");
 629                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 630
 631                         file.remove();
 632
 633                         INFO(SINK, "Syncing disk and rebooting.");
 634                         ::sync();
 635                         ::reboot(RB_AUTOBOOT);
 636                 } catch (runtime::Exception &e) {
 637                         ERROR(SINK, "Decryption failed: " + std::string(e.what()));
 638                 }
 639         };
 640
 641         std::thread asyncWork(decryptWorker);
 642         asyncWork.detach();
 643
 644         return error::None;
 645 }
 646
 647 int InternalEncryptionServer::recovery()
 648 {
 649         int state = getState();
 650
 651         if (state == State::Unencrypted)
 652                 return error::NoSuchDevice;
 653
 654         runtime::File file("/opt/.factoryreset");
 655         file.create(0640);
 656
 657         ::sync();
 658         try {
 659                 dbus::Connection& systemDBus = dbus::Connection::getSystem();
 660                 systemDBus.methodcall("org.tizen.system.deviced",
 661                                                                 "/Org/Tizen/System/DeviceD/Power",
 662                                                                 "org.tizen.system.deviced.power",
 663                                                                 "reboot",
 664                                                                 -1, "()", "(si)", "reboot", 0);
 665         } catch (runtime::Exception &e) {
 666                 ::reboot(RB_AUTOBOOT);
 667         }
 668         return error::None;
 669 }
 670
 671 int InternalEncryptionServer::isPasswordInitialized()
 672 {
 673         return keyServer.isInitialized(engine->getSource());
 674 }
 675
 676 int InternalEncryptionServer::initPassword(const std::string& password)
 677 {
 678         return keyServer.init(engine->getSource(), password, Key::DEFAULT_256BIT);
 679 }
 680
 681 int InternalEncryptionServer::cleanPassword(const std::string& password)
 682 {
 683         return keyServer.remove(engine->getSource(), password);
 684 }
 685
 686 int InternalEncryptionServer::changePassword(const std::string& oldPassword,
 687                                                                                 const std::string& newPassword)
 688 {
 689         return keyServer.changePassword(engine->getSource(), oldPassword, newPassword);
 690 }
 691
 692 int InternalEncryptionServer::verifyPassword(const std::string& password)
 693 {
 694         return keyServer.verifyPassword(engine->getSource(), password);
 695 }
 696
 697 int InternalEncryptionServer::getState()
 698 {
 699         char *value = ::vconf_get_str(VCONFKEY_ODE_CRYPTO_STATE);
 700         if (value == NULL) {
 701                 throw runtime::Exception("Failed to get vconf value.");
 702         }
 703
 704         std::string valueStr(value);
 705         free(value);
 706
 707         if (valueStr == "encrypted")
 708                 return State::Encrypted;
 709         else if (valueStr == "unencrypted")
 710                 return State::Unencrypted;
 711         else if (valueStr == "error_partially_encrypted" || valueStr == "error_partially_decrypted")
 712                 return State::Corrupted;
 713
 714         return State::NotSupported;
 715 }
 716
 717 unsigned int InternalEncryptionServer::getSupportedOptions()
 718 {
 719         return engine->getSupportedOptions();
 720 }
 721
 722 std::string InternalEncryptionServer::getDevicePath() const
 723 {
 724         return engine->getSource();
 725 }
 726
 727 } // namespace ode