server/internal-encryption.cpp

   1 /*
   2  *  Copyright (c) 2015-2017 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
  42 #include "misc.h"
  43 #include "logger.h"
  44 #include "progress-bar.h"
  45 #include "rmi/common.h"
  46
  47 #include "ext4-tool.h"
  48 #include "internal-encryption.h"
  49 #include "internal-encryption-common.h"
  50 #include "upgrade-support.h"
  51 #include "file-footer.h"
  52
  53 namespace ode {
  54
  55 namespace {
  56
  57 const char *PRIVILEGE_PLATFORM  = "http://tizen.org/privilege/internal/default/platform";
  58
  59 // watches systemd jobs
  60 class JobWatch {
  61 public:
  62         explicit JobWatch(dbus::Connection& systemDBus);
  63         ~JobWatch();
  64
  65         bool waitForJob(const std::string& job);
  66
  67 private:
  68         void jobRemoved(const dbus::Variant& parameters);
  69
  70         struct Job {
  71                 Job(uint32_t id,
  72                         const std::string& job,
  73                         const std::string& unit,
  74                         const std::string& result) : id(id), job(job), unit(unit), result(result) {}
  75                 uint32_t id;
  76                 std::string job;
  77                 std::string unit;
  78                 std::string result;
  79         };
  80
  81         dbus::Connection::SubscriptionId id;
  82         dbus::Connection& systemDBus;
  83         std::list<Job> removedJobs;
  84         std::mutex jobsMutex;
  85         std::condition_variable jobsCv;
  86 };
  87
  88 JobWatch::JobWatch(dbus::Connection& systemDBus) : systemDBus(systemDBus) {
  89         auto callback = [this](dbus::Variant parameters) {
  90                 this->jobRemoved(parameters);
  91         };
  92
  93         id = systemDBus.subscribeSignal("",
  94                                                                         "/org/freedesktop/systemd1",
  95                                                                         "org.freedesktop.systemd1.Manager",
  96                                                                         "JobRemoved",
  97                                                                         callback);
  98 }
  99
 100 JobWatch::~JobWatch() {
 101         systemDBus.unsubscribeSignal(id);
 102 }
 103
 104 bool JobWatch::waitForJob(const std::string& job) {
 105         while(true) {
 106                 std::unique_lock<std::mutex> lock(jobsMutex);
 107                 bool timeout = true;
 108                 auto sec = std::chrono::seconds(1);
 109                 jobsCv.wait_for(lock, 5*sec, [this, &timeout]{
 110                                 if (!removedJobs.empty()) {
 111                                         timeout = false;
 112                                         return true;
 113                                 }
 114                                 return false;});
 115
 116                 if (timeout) {
 117                         INFO(SINK, "job: " + job + ", result: time out");
 118                         return false;
 119                 }
 120
 121                 while(!removedJobs.empty()) {
 122                         bool match = (removedJobs.front().job == job);
 123                         bool done = (removedJobs.front().result == "done");
 124                         removedJobs.pop_front();
 125                         if (match)
 126                                 return done;
 127                 }
 128         };
 129 }
 130
 131 void JobWatch::jobRemoved(const dbus::Variant& parameters)
 132 {
 133         uint32_t id;
 134         const char* job;
 135         const char* unit;
 136         const char* result;
 137         parameters.get("(uoss)", &id, &job, &unit, &result);
 138         INFO(SINK, "id:" + std::to_string(id) + " job:" + job + " unit:" + unit + " result:" + result);
 139
 140         {
 141                 std::lock_guard<std::mutex> guard(jobsMutex);
 142                 removedJobs.emplace_back(id, job, unit, result);
 143         }
 144         jobsCv.notify_one();
 145 }
 146
 147 std::string getDecodedPath(const std::string &path, const std::string &prefix)
 148 {
 149         std::string ret = path;
 150         size_t pos = 0;
 151
 152         pos = ret.find(prefix);
 153         if (pos != std::string::npos)
 154                 ret = ret.substr(prefix.size(), ret.size());
 155
 156         pos = 0;
 157         while ((pos = ret.find("_", pos)) != std::string::npos) {
 158                 int a = std::stoi(std::string(1, ret.at(pos+1)), nullptr, 16);
 159                 int b = std::stoi(std::string(1, ret.at(pos+2)), nullptr, 16);
 160                 if (a < 0 || b < 0)
 161                         ret.replace(pos, 3, "_");
 162                 else
 163                         ret.replace(pos, 3, std::string(1, ((a << 4) | b)));
 164                 pos += 1;
 165         }
 166         return ret;
 167 }
 168
 169 void stopSystemdUnits()
 170 {
 171         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 172         dbus::VariantIterator iter;
 173         std::vector<std::string> preprocessUnits;
 174         std::set<std::string> unitsToStop;
 175
 176         auto stopUnit = [&systemDBus](const std::string &unit) {
 177                 JobWatch watch(systemDBus);
 178                 INFO(SINK, "Stopping unit: " + unit);
 179                 const char* job = NULL;
 180                 try {
 181                         systemDBus.methodcall("org.freedesktop.systemd1",
 182                                                                         "/org/freedesktop/systemd1",
 183                                                                         "org.freedesktop.systemd1.Manager",
 184                                                                         "StopUnit",
 185                                                                         -1, "(o)", "(ss)", unit.c_str(), "flush").get("(o)", &job);
 186                         INFO(SINK, "Waiting for job: " + std::string(job));
 187                         if (!watch.waitForJob(job))
 188                                 ERROR(SINK, "Stopping unit: " + unit + " failed");
 189                 } catch (runtime::Exception &e) {
 190                         ERROR(SINK, std::string(e.what()));
 191                 }
 192         };
 193
 194         try {
 195                 systemDBus.methodcall("org.freedesktop.systemd1",
 196                                                                 "/org/freedesktop/systemd1",
 197                                                                 "org.freedesktop.systemd1.Manager",
 198                                                                 "ListUnits",
 199                                                                 -1, "(a(ssssssouso))", "").get("(a(ssssssouso))", &iter);
 200         } catch (runtime::Exception &e) {
 201                 INFO(SINK, "Get list of systemd unit : " + std::string(e.what()));
 202         }
 203
 204         while (1) {
 205                 unsigned int dataUnit;
 206                 char *dataStr[9];
 207                 int ret;
 208                 ret = iter.get("(ssssssouso)", dataStr, dataStr + 1, dataStr + 2,
 209                                                 dataStr + 3, dataStr + 4, dataStr + 5,
 210                                                 dataStr + 6, &dataUnit, dataStr + 7, dataStr + 8);
 211                 if (!ret)
 212                         break;
 213
 214                 std::string unitName(dataStr[0]);
 215                 if (unitName == "security-manager.socket" ||
 216                                 unitName == "connman.socket" ||
 217                                 unitName == "msg-server.socket") {
 218                         preprocessUnits.insert(preprocessUnits.begin(), unitName);
 219                 } else if (unitName.compare(0, 5, "user@") == 0 ||
 220                                 unitName == "tlm.service" ||
 221                                 unitName == "resourced.service" ||
 222                                 unitName == "security-manager.service") {
 223                         preprocessUnits.push_back(unitName);
 224                 }
 225         }
 226
 227         for (auto unit : preprocessUnits) {
 228                 stopUnit(unit);
 229         }
 230
 231         for (pid_t pid : runtime::FileUser::getList(INTERNAL_PATH, true)) {
 232                 try {
 233                         char *unit = nullptr;
 234                         systemDBus.methodcall("org.freedesktop.systemd1",
 235                                                                         "/org/freedesktop/systemd1",
 236                                                                         "org.freedesktop.systemd1.Manager",
 237                                                                         "GetUnitByPID",
 238                                                                         -1, "(o)", "(u)", (unsigned int)pid)
 239                                                                                 .get("(o)", &unit);
 240
 241                         auto unescapedName = getDecodedPath(unit, "/org/freedesktop/systemd1/unit/");
 242                         unitsToStop.insert(unescapedName);
 243                 } catch (runtime::Exception &e) {
 244                         INFO(SINK, "Killing process: " + std::to_string(pid));
 245                         ::kill(pid, SIGKILL);
 246                 }
 247         }
 248
 249         for (auto unit : unitsToStop) {
 250                 stopUnit(unit);
 251         }
 252 }
 253
 254 void showProgressUI(const std::string type)
 255 {
 256         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 257         std::string unit("ode-progress-ui@"+type+".service");
 258
 259         JobWatch watch(systemDBus);
 260         INFO(SINK, "Start unit: " + unit);
 261
 262         const char* job = NULL;
 263         systemDBus.methodcall("org.freedesktop.systemd1",
 264                                                         "/org/freedesktop/systemd1",
 265                                                         "org.freedesktop.systemd1.Manager",
 266                                                         "StartUnit",
 267                                                         -1, "(o)", "(ss)", unit.c_str(), "replace").get("(o)", &job);
 268
 269         INFO(SINK, "Waiting for job: " + std::string(job));
 270         if (!watch.waitForJob(job))
 271                 ERROR(SINK, "Starting unit: " + unit + " failed");
 272 }
 273
 274 unsigned int getOptions()
 275 {
 276         unsigned int result = 0;
 277         int value;
 278
 279         value = 0;
 280         ::vconf_get_bool(VCONFKEY_ODE_FAST_ENCRYPTION, &value);
 281         if (value) {
 282                 result |= InternalEncryption::Option::IncludeUnusedRegion;
 283         }
 284
 285         return result;
 286 }
 287
 288 void setOptions(unsigned int options)
 289 {
 290         bool value;
 291
 292         if (options & InternalEncryption::Option::IncludeUnusedRegion) {
 293                 value = true;
 294         } else {
 295                 value = false;
 296         }
 297         ::vconf_set_bool(VCONFKEY_ODE_FAST_ENCRYPTION, value);
 298 }
 299
 300 void execAndWait(const std::string &path, std::vector<std::string> &args)
 301 {
 302         runtime::Process proc(path, args);
 303         int ret = proc.execute();
 304         if (ret < 0)
 305                 ERROR(SINK, path + " failed for " + args.back());
 306
 307         ret = proc.waitForFinished();
 308         if (ret < 0 || !WIFEXITED(ret) || WEXITSTATUS(ret) != 0)
 309                 ERROR(SINK, path + " failed for " + args.back());
 310 }
 311
 312 bool isPartitionTerminated(const std::string &partition)
 313 {
 314         bool ret = true;
 315         const std::string cmd("fuser -m " + partition + " | grep -o '[0-9]*'");
 316         char *line = nullptr;
 317         size_t len = 0;
 318
 319         FILE *fp = ::popen(cmd.c_str(), "r");
 320         if (fp == nullptr) {
 321                 ERROR(SINK, "Failed to get processes on partition");
 322                 return false;
 323         }
 324
 325         if (::getline(&line, &len, fp) != -1)
 326                 ret = false;
 327
 328         ::free(line);
 329         ::pclose(fp);
 330
 331         return ret;
 332 }
 333
 334 void unmountInternalStorage(const std::string& source)
 335 {
 336         if (::umount2("/opt/usr", MNT_DETACH) == -1) {
 337                 if (errno != EBUSY && errno != EINVAL) {
 338                         throw runtime::Exception("umount() error : " + runtime::GetSystemErrorMessage());
 339                 }
 340         }
 341
 342         do {
 343                 ::sync();
 344                 static const char *fuserPath = "/usr/bin/fuser";
 345                 std::vector<std::string> args = {
 346                         fuserPath, "-m", "-k", "-s", "-SIGTERM", source,
 347                 };
 348                 execAndWait(fuserPath, args);
 349                 ::usleep((useconds_t)((unsigned int)(500)*1000));
 350
 351                 args[4] = "-SIGKILL";
 352                 execAndWait(fuserPath, args);
 353                 ::usleep((useconds_t)((unsigned int)(200)*1000));
 354         } while (!isPartitionTerminated(source));
 355 }
 356
 357 }
 358
 359 InternalEncryptionServer::InternalEncryptionServer(ServerContext& srv,
 360                                                                                                    KeyServer& key) :
 361         server(srv),
 362         keyServer(key)
 363 {
 364         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::setMountPassword)(std::string));
 365         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::mount)(std::vector<unsigned char>, unsigned int));
 366         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::umount)());
 367         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::isMounted)());
 368         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::encrypt)(std::string, unsigned int));
 369         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::decrypt)(std::string));
 370         server.expose(this, "", (int)(InternalEncryptionServer::isPasswordInitialized)());
 371         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::recovery)());
 372         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::initPassword)(std::string));
 373         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::cleanPassword)(std::string));
 374         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::changePassword)(std::string, std::string));
 375         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::verifyPassword)(std::string));
 376         server.expose(this, "", (int)(InternalEncryptionServer::getState)());
 377         server.expose(this, "", (unsigned int)(InternalEncryptionServer::getSupportedOptions)());
 378         server.expose(this, "", (std::string)(InternalEncryptionServer::getDevicePath)());
 379
 380         server.createNotification("InternalEncryptionServer::mount");
 381
 382         std::string source = findDevPath();
 383
 384         if (getState() == State::Encrypted) {
 385                 //"error_partially_encrypted"
 386                 if (!FileFooter::exist(source) && !UpgradeSupport::checkUpgradeFlag()) {
 387                         // Trigger key migration process
 388                         UpgradeSupport::createUpgradeFlag();
 389                 }
 390         }
 391
 392         engine.reset(new INTERNAL_ENGINE(
 393                 source, INTERNAL_PATH,
 394                 ProgressBar([](int v) {
 395                         ::vconf_set_str(VCONFKEY_ODE_ENCRYPT_PROGRESS,
 396                                                         std::to_string(v).c_str());
 397                 })
 398         ));
 399 }
 400
 401 InternalEncryptionServer::~InternalEncryptionServer()
 402 {
 403 }
 404
 405 int InternalEncryptionServer::migrateMasterKey(const std::string& dev, const std::string& password)
 406 {
 407         try {
 408                 BinaryData masterKey = UpgradeSupport::loadMasterKey(dev);
 409
 410                 // encrypt the master key with given password
 411                 return keyServer.changePassword2(dev, masterKey, password);
 412         } catch (const runtime::Exception&) {
 413                 INFO("Failed to load the master key stored during upgrade.");
 414         }
 415
 416         return error::Unknown;
 417 }
 418
 419 int InternalEncryptionServer::setMountPassword(const std::string& password)
 420 {
 421         const std::string& dev = engine->getSource();
 422
 423         // check if upgrade flag exists
 424         if (UpgradeSupport::checkUpgradeFlag()) {
 425                 INFO("Upgrade flag detected.");
 426
 427                 int rc = migrateMasterKey(dev, password);
 428                 if (rc == error::None)
 429                         UpgradeSupport::removeUpgradeFlag();
 430
 431                 return rc;
 432         }
 433
 434         return keyServer.get(dev, password, mountKey);
 435 }
 436
 437 int InternalEncryptionServer::mount(const std::vector<unsigned char> &mk, unsigned int options)
 438 {
 439         if (mountKey.empty() && mk.empty()) {
 440                 ERROR(SINK, "You need to set master key first.");
 441                 return error::NoData;
 442         }
 443
 444         BinaryData key = mk.empty() ? mountKey : mk;
 445         mountKey.clear();
 446
 447         if (getState() != State::Encrypted) {
 448                 INFO(SINK, "Cannot mount, SD partition's state incorrect.");
 449                 return error::NoSuchDevice;
 450         }
 451
 452         if (engine->isMounted()) {
 453                 INFO(SINK, "Partition already mounted.");
 454                 return error::None;
 455         }
 456
 457         INFO(SINK, "Mounting internal storage.");
 458         try {
 459                 engine->mount(key, getOptions());
 460
 461                 server.notify("InternalEncryptionServer::mount");
 462
 463                 runtime::File("/tmp/.lazy_mount").create(O_WRONLY);
 464                 runtime::File("/tmp/.unlock_mnt").create(O_WRONLY);
 465         } catch (runtime::Exception &e) {
 466                 ERROR(SINK, "Mount failed: " + std::string(e.what()));
 467                 return error::Unknown;
 468         }
 469
 470         return error::None;
 471 }
 472
 473 int InternalEncryptionServer::isMounted()
 474 {
 475         int ret = 0;
 476         try {
 477                 ret = engine->isMounted() ? 1 : 0;
 478         } catch (runtime::Exception &e) {
 479                 ERROR(SINK, "Failed to access the mount flag");
 480                 return error::Unknown;
 481         }
 482         return ret;
 483 }
 484
 485 int InternalEncryptionServer::umount()
 486 {
 487         if (getState() != State::Encrypted) {
 488                 ERROR(SINK, "Cannot umount, partition's state incorrect.");
 489                 return error::NoSuchDevice;
 490         }
 491
 492         if (!engine->isMounted()) {
 493                 INFO(SINK, "Partition already umounted.");
 494                 return error::None;
 495         }
 496
 497         INFO(SINK, "Closing all processes using internal storage.");
 498         try {
 499                 stopSystemdUnits();
 500                 INFO(SINK, "Umounting internal storage.");
 501                 unmountInternalStorage("/dev/mapper/userdata");
 502                 engine->umount();
 503         } catch (runtime::Exception &e) {
 504                 ERROR(SINK, "Umount failed: " + std::string(e.what()));
 505                 return error::Unknown;
 506         }
 507
 508         return error::None;
 509 }
 510
 511 int InternalEncryptionServer::encrypt(const std::string& password, unsigned int options)
 512 {
 513         if (getState() != State::Unencrypted) {
 514                 ERROR(SINK, "Cannot encrypt, partition's state incorrect.");
 515                 return error::NoSuchDevice;
 516         }
 517
 518         BinaryData masterKey;
 519         int ret = keyServer.get(engine->getSource(), password, masterKey);
 520         if (ret != error::None)
 521                 return ret;
 522
 523         auto encryptWorker = [masterKey, options, this]() {
 524                 try {
 525                         if (::device_power_request_lock(POWER_LOCK_DISPLAY, 0) != 0)
 526                                 ERROR(SINK, "Failed to request to lock display");
 527
 528                         showProgressUI("encrypt");
 529                         ::sleep(1);
 530
 531                         runtime::File file("/opt/etc/.odeprogress");
 532                         file.create(0640);
 533
 534                         std::string source = engine->getSource();
 535                         auto mntPaths = findMountPointsByDevice(source);
 536
 537                         if (!mntPaths.empty()) {
 538                                 INFO(SINK, "Closing all processes using internal storage.");
 539                                 stopSystemdUnits();
 540
 541                                 INFO(SINK, "Unmounting internal storage.");
 542                                 unmountInternalStorage(source);
 543                         }
 544
 545                         INFO(SINK, "Encryption started.");
 546                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_encrypted");
 547                         try {
 548                                 engine->encrypt(masterKey, options);
 549                         } catch (runtime::Exception &e) {
 550                                 ERROR(SINK, e.what());
 551                                 if (!engine->isStarted()) {
 552                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 553                                         file.remove();
 554                                 }
 555                                 ::sync();
 556                                 ::reboot(RB_AUTOBOOT);
 557                         }
 558                         setOptions(options & getSupportedOptions());
 559
 560                         INFO(SINK, "Encryption completed.");
 561                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 562                         server.notify("InternalEncryptionServer::mount");
 563
 564                         file.remove();
 565
 566                         INFO(SINK, "Syncing disk and rebooting.");
 567                         ::sync();
 568                         ::reboot(RB_AUTOBOOT);
 569                 } catch (runtime::Exception &e) {
 570                         ERROR(SINK, "Encryption failed: " + std::string(e.what()));
 571                 }
 572         };
 573
 574         std::thread asyncWork(encryptWorker);
 575         asyncWork.detach();
 576
 577         return error::None;
 578 }
 579
 580 int InternalEncryptionServer::decrypt(const std::string& password)
 581 {
 582         if (getState() != State::Encrypted) {
 583                 ERROR(SINK, "Cannot decrypt, partition's state incorrect.");
 584                 return error::NoSuchDevice;
 585         }
 586
 587         // check if key migration is needed
 588         if (UpgradeSupport::checkUpgradeFlag()) {
 589                 INFO("Upgrade flag detected.");
 590                 const std::string& dev = engine->getSource();
 591                 int rc = migrateMasterKey(dev, password);
 592                 if (rc == error::None)
 593                         UpgradeSupport::removeUpgradeFlag();
 594         }
 595
 596         BinaryData masterKey;
 597         int ret = keyServer.get(engine->getSource(), password, masterKey);
 598         if (ret != error::None)
 599                 return ret;
 600
 601         auto decryptWorker = [masterKey, this]() {
 602                 try {
 603                         if (::device_power_request_lock(POWER_LOCK_DISPLAY, 0) != 0)
 604                                 ERROR(SINK, "Failed to request to lock display");
 605
 606                         showProgressUI("decrypt");
 607                         ::sleep(1);
 608
 609                         runtime::File file("/opt/etc/.odeprogress");
 610                         file.create(0640);
 611
 612                         if (engine->isMounted()) {
 613                                 INFO(SINK, "Closing all processes using internal storage.");
 614                                 stopSystemdUnits();
 615
 616                                 INFO(SINK, "Umounting internal storage.");
 617                                 unmountInternalStorage("/dev/mapper/userdata");
 618                                 engine->umount();
 619                         }
 620
 621                         INFO(SINK, "Decryption started.");
 622                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_decrypted");
 623                         try {
 624                                 engine->decrypt(masterKey, getOptions());
 625                         } catch (runtime::Exception &e) {
 626                                 ERROR(SINK, e.what());
 627                                 if (!engine->isStarted()) {
 628                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 629                                         file.remove();
 630                                 }
 631                                 ::sync();
 632                                 ::reboot(RB_AUTOBOOT);
 633                         }
 634
 635                         INFO(SINK, "Decryption complete.");
 636                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 637
 638                         file.remove();
 639
 640                         INFO(SINK, "Syncing disk and rebooting.");
 641                         ::sync();
 642                         ::reboot(RB_AUTOBOOT);
 643                 } catch (runtime::Exception &e) {
 644                         ERROR(SINK, "Decryption failed: " + std::string(e.what()));
 645                 }
 646         };
 647
 648         std::thread asyncWork(decryptWorker);
 649         asyncWork.detach();
 650
 651         return error::None;
 652 }
 653
 654 int InternalEncryptionServer::recovery()
 655 {
 656         int state = getState();
 657
 658         if (state == State::Unencrypted)
 659                 return error::NoSuchDevice;
 660
 661         runtime::File file("/opt/.factoryreset");
 662         file.create(0640);
 663
 664         ::sync();
 665         try {
 666                 dbus::Connection& systemDBus = dbus::Connection::getSystem();
 667                 systemDBus.methodcall("org.tizen.system.deviced",
 668                                                                 "/Org/Tizen/System/DeviceD/Power",
 669                                                                 "org.tizen.system.deviced.power",
 670                                                                 "reboot",
 671                                                                 -1, "()", "(si)", "reboot", 0);
 672         } catch (runtime::Exception &e) {
 673                 ::reboot(RB_AUTOBOOT);
 674         }
 675         return error::None;
 676 }
 677
 678 int InternalEncryptionServer::isPasswordInitialized()
 679 {
 680         return keyServer.isInitialized(engine->getSource());
 681 }
 682
 683 int InternalEncryptionServer::initPassword(const std::string& password)
 684 {
 685         return keyServer.init(engine->getSource(), password, Key::DEFAULT_256BIT);
 686 }
 687
 688 int InternalEncryptionServer::cleanPassword(const std::string& password)
 689 {
 690         return keyServer.remove(engine->getSource(), password);
 691 }
 692
 693 int InternalEncryptionServer::changePassword(const std::string& oldPassword,
 694                                                                                 const std::string& newPassword)
 695 {
 696         return keyServer.changePassword(engine->getSource(), oldPassword, newPassword);
 697 }
 698
 699 int InternalEncryptionServer::verifyPassword(const std::string& password)
 700 {
 701         return keyServer.verifyPassword(engine->getSource(), password);
 702 }
 703
 704 int InternalEncryptionServer::getState()
 705 {
 706         char *value = ::vconf_get_str(VCONFKEY_ODE_CRYPTO_STATE);
 707         if (value == NULL) {
 708                 throw runtime::Exception("Failed to get vconf value.");
 709         }
 710
 711         std::string valueStr(value);
 712         free(value);
 713
 714         if (valueStr == "encrypted")
 715                 return State::Encrypted;
 716         else if (valueStr == "unencrypted")
 717                 return State::Unencrypted;
 718         else if (valueStr == "error_partially_encrypted" || valueStr == "error_partially_decrypted")
 719                 return State::Corrupted;
 720
 721         return State::NotSupported;
 722 }
 723
 724 unsigned int InternalEncryptionServer::getSupportedOptions()
 725 {
 726         return engine->getSupportedOptions();
 727 }
 728
 729 std::string InternalEncryptionServer::getDevicePath() const
 730 {
 731         return engine->getSource();
 732 }
 733
 734 } // namespace ode