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 <klay/process.h>
  36 #include <klay/file-user.h>
  37 #include <klay/filesystem.h>
  38 #include <klay/dbus/connection.h>
  39 #include <klay/error.h>
  40
  41 #include "misc.h"
  42 #include "logger.h"
  43 #include "progress-bar.h"
  44 #include "rmi/common.h"
  45
  46 #include "ext4-tool.h"
  47 #include "internal-encryption.h"
  48 #include "internal-encryption-common.h"
  49 #include "upgrade-support.h"
  50
  51 namespace ode {
  52
  53 namespace {
  54
  55 const char *PRIVILEGE_PLATFORM  = "http://tizen.org/privilege/internal/default/platform";
  56
  57 // watches systemd jobs
  58 class JobWatch {
  59 public:
  60         explicit JobWatch(dbus::Connection& systemDBus);
  61         ~JobWatch();
  62
  63         bool waitForJob(const std::string& job);
  64
  65 private:
  66         void jobRemoved(const dbus::Variant& parameters);
  67
  68         struct Job {
  69                 Job(uint32_t id,
  70                         const std::string& job,
  71                         const std::string& unit,
  72                         const std::string& result) : id(id), job(job), unit(unit), result(result) {}
  73                 uint32_t id;
  74                 std::string job;
  75                 std::string unit;
  76                 std::string result;
  77         };
  78
  79         dbus::Connection::SubscriptionId id;
  80         dbus::Connection& systemDBus;
  81         std::list<Job> removedJobs;
  82         std::mutex jobsMutex;
  83         std::condition_variable jobsCv;
  84 };
  85
  86 JobWatch::JobWatch(dbus::Connection& systemDBus) : systemDBus(systemDBus) {
  87         auto callback = [this](dbus::Variant parameters) {
  88                 this->jobRemoved(parameters);
  89         };
  90
  91         id = systemDBus.subscribeSignal("",
  92                                                                         "/org/freedesktop/systemd1",
  93                                                                         "org.freedesktop.systemd1.Manager",
  94                                                                         "JobRemoved",
  95                                                                         callback);
  96 }
  97
  98 JobWatch::~JobWatch() {
  99         systemDBus.unsubscribeSignal(id);
 100 }
 101
 102 bool JobWatch::waitForJob(const std::string& job) {
 103         while(true) {
 104                 std::unique_lock<std::mutex> lock(jobsMutex);
 105                 bool timeout = true;
 106                 auto sec = std::chrono::seconds(1);
 107                 jobsCv.wait_for(lock, 5*sec, [this, &timeout]{
 108                                 if (!removedJobs.empty()) {
 109                                         timeout = false;
 110                                         return true;
 111                                 }
 112                                 return false;});
 113
 114                 if (timeout) {
 115                         INFO(SINK, "job: " + job + ", result: time out");
 116                         return false;
 117                 }
 118
 119                 while(!removedJobs.empty()) {
 120                         bool match = (removedJobs.front().job == job);
 121                         bool done = (removedJobs.front().result == "done");
 122                         removedJobs.pop_front();
 123                         if (match)
 124                                 return done;
 125                 }
 126         };
 127 }
 128
 129 void JobWatch::jobRemoved(const dbus::Variant& parameters)
 130 {
 131         uint32_t id;
 132         const char* job;
 133         const char* unit;
 134         const char* result;
 135         parameters.get("(uoss)", &id, &job, &unit, &result);
 136         INFO(SINK, "id:" + std::to_string(id) + " job:" + job + " unit:" + unit + " result:" + result);
 137
 138         {
 139                 std::lock_guard<std::mutex> guard(jobsMutex);
 140                 removedJobs.emplace_back(id, job, unit, result);
 141         }
 142         jobsCv.notify_one();
 143 }
 144
 145 std::string getDecodedPath(const std::string &path, const std::string &prefix)
 146 {
 147         std::string ret = path;
 148         size_t pos = 0;
 149
 150         pos = ret.find(prefix);
 151         if (pos != std::string::npos)
 152                 ret = ret.substr(prefix.size(), ret.size());
 153
 154         pos = 0;
 155         while ((pos = ret.find("_", pos)) != std::string::npos) {
 156                 int a = std::stoi(std::string(1, ret.at(pos+1)), nullptr, 16);
 157                 int b = std::stoi(std::string(1, ret.at(pos+2)), nullptr, 16);
 158                 if (a < 0 || b < 0)
 159                         ret.replace(pos, 3, "_");
 160                 else
 161                         ret.replace(pos, 3, std::string(1, ((a << 4) | b)));
 162                 pos += 1;
 163         }
 164         return ret;
 165 }
 166
 167 void stopSystemdUnits()
 168 {
 169         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 170         dbus::VariantIterator iter;
 171         std::vector<std::string> preprocessUnits;
 172         std::set<std::string> unitsToStop;
 173
 174         auto stopUnit = [&systemDBus](const std::string &unit) {
 175                 JobWatch watch(systemDBus);
 176                 INFO(SINK, "Stopping unit: " + unit);
 177                 const char* job = NULL;
 178                 try {
 179                         systemDBus.methodcall("org.freedesktop.systemd1",
 180                                                                         "/org/freedesktop/systemd1",
 181                                                                         "org.freedesktop.systemd1.Manager",
 182                                                                         "StopUnit",
 183                                                                         -1, "(o)", "(ss)", unit.c_str(), "flush").get("(o)", &job);
 184                         INFO(SINK, "Waiting for job: " + std::string(job));
 185                         if (!watch.waitForJob(job))
 186                                 ERROR(SINK, "Stopping unit: " + unit + " failed");
 187                 } catch (runtime::Exception &e) {
 188                         ERROR(SINK, std::string(e.what()));
 189                 }
 190         };
 191
 192         try {
 193                 systemDBus.methodcall("org.freedesktop.systemd1",
 194                                                                 "/org/freedesktop/systemd1",
 195                                                                 "org.freedesktop.systemd1.Manager",
 196                                                                 "ListUnits",
 197                                                                 -1, "(a(ssssssouso))", "").get("(a(ssssssouso))", &iter);
 198         } catch (runtime::Exception &e) {
 199                 INFO(SINK, "Get list of systemd unit : " + std::string(e.what()));
 200         }
 201
 202         while (1) {
 203                 unsigned int dataUnit;
 204                 char *dataStr[9];
 205                 int ret;
 206                 ret = iter.get("(ssssssouso)", dataStr, dataStr + 1, dataStr + 2,
 207                                                 dataStr + 3, dataStr + 4, dataStr + 5,
 208                                                 dataStr + 6, &dataUnit, dataStr + 7, dataStr + 8);
 209                 if (!ret)
 210                         break;
 211
 212                 std::string unitName(dataStr[0]);
 213                 if (unitName == "security-manager.socket" ||
 214                                 unitName == "connman.socket" ||
 215                                 unitName == "msg-server.socket") {
 216                         preprocessUnits.insert(preprocessUnits.begin(), unitName);
 217                 } else if (unitName.compare(0, 5, "user@") == 0 ||
 218                                 unitName == "tlm.service" ||
 219                                 unitName == "resourced.service" ||
 220                                 unitName == "security-manager.service") {
 221                         preprocessUnits.push_back(unitName);
 222                 }
 223         }
 224
 225         for (auto unit : preprocessUnits) {
 226                 stopUnit(unit);
 227         }
 228
 229         for (pid_t pid : runtime::FileUser::getList(INTERNAL_PATH, true)) {
 230                 try {
 231                         char *unit = nullptr;
 232                         systemDBus.methodcall("org.freedesktop.systemd1",
 233                                                                         "/org/freedesktop/systemd1",
 234                                                                         "org.freedesktop.systemd1.Manager",
 235                                                                         "GetUnitByPID",
 236                                                                         -1, "(o)", "(u)", (unsigned int)pid)
 237                                                                                 .get("(o)", &unit);
 238
 239                         auto unescapedName = getDecodedPath(unit, "/org/freedesktop/systemd1/unit/");
 240                         unitsToStop.insert(unescapedName);
 241                 } catch (runtime::Exception &e) {
 242                         INFO(SINK, "Killing process: " + std::to_string(pid));
 243                         ::kill(pid, SIGKILL);
 244                 }
 245         }
 246
 247         for (auto unit : unitsToStop) {
 248                 stopUnit(unit);
 249         }
 250 }
 251
 252 void showProgressUI(const std::string type)
 253 {
 254         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 255         std::string unit("ode-progress-ui@"+type+".service");
 256
 257         JobWatch watch(systemDBus);
 258         INFO(SINK, "Start unit: " + unit);
 259
 260         const char* job = NULL;
 261         systemDBus.methodcall("org.freedesktop.systemd1",
 262                                                         "/org/freedesktop/systemd1",
 263                                                         "org.freedesktop.systemd1.Manager",
 264                                                         "StartUnit",
 265                                                         -1, "(o)", "(ss)", unit.c_str(), "replace").get("(o)", &job);
 266
 267         INFO(SINK, "Waiting for job: " + std::string(job));
 268         if (!watch.waitForJob(job))
 269                 ERROR(SINK, "Starting unit: " + unit + " failed");
 270 }
 271
 272 unsigned int getOptions()
 273 {
 274         unsigned int result = 0;
 275         int value;
 276
 277         value = 0;
 278         ::vconf_get_bool(VCONFKEY_ODE_FAST_ENCRYPTION, &value);
 279         if (value) {
 280                 result |= InternalEncryption::Option::IncludeUnusedRegion;
 281         }
 282
 283         return result;
 284 }
 285
 286 void setOptions(unsigned int options)
 287 {
 288         bool value;
 289
 290         if (options & InternalEncryption::Option::IncludeUnusedRegion) {
 291                 value = true;
 292         } else {
 293                 value = false;
 294         }
 295         ::vconf_set_bool(VCONFKEY_ODE_FAST_ENCRYPTION, value);
 296 }
 297
 298 void execAndWait(const std::string &path, std::vector<std::string> &args)
 299 {
 300         runtime::Process proc(path, args);
 301         int ret = proc.execute();
 302         if (ret < 0)
 303                 ERROR(SINK, path + " failed for " + args.back());
 304
 305         ret = proc.waitForFinished();
 306         if (ret < 0 || !WIFEXITED(ret) || WEXITSTATUS(ret) != 0)
 307                 ERROR(SINK, path + " failed for " + args.back());
 308 }
 309
 310 bool isPartitionTerminated(const std::string &partition)
 311 {
 312         bool ret = true;
 313         const std::string cmd("fuser -m " + partition + " | grep -o '[0-9]*'");
 314         char *line = nullptr;
 315         size_t len = 0;
 316
 317         FILE *fp = ::popen(cmd.c_str(), "r");
 318         if (fp == nullptr) {
 319                 ERROR(SINK, "Failed to get processes on partition");
 320                 return false;
 321         }
 322
 323         if (::getline(&line, &len, fp) != -1)
 324                 ret = false;
 325
 326         ::free(line);
 327         ::pclose(fp);
 328
 329         return ret;
 330 }
 331
 332 void unmountInternalStorage(const std::string& source)
 333 {
 334         if (::umount2("/opt/usr", MNT_DETACH) == -1) {
 335                 if (errno != EBUSY && errno != EINVAL) {
 336                         throw runtime::Exception("umount() error : " + runtime::GetSystemErrorMessage());
 337                 }
 338         }
 339
 340         do {
 341                 ::sync();
 342                 static const char *fuserPath = "/usr/bin/fuser";
 343                 std::vector<std::string> args = {
 344                         fuserPath, "-m", "-k", "-s", "-SIGTERM", source,
 345                 };
 346                 execAndWait(fuserPath, args);
 347                 ::usleep((useconds_t)((unsigned int)(500)*1000));
 348
 349                 args[4] = "-SIGKILL";
 350                 execAndWait(fuserPath, args);
 351                 ::usleep((useconds_t)((unsigned int)(200)*1000));
 352         } while (!isPartitionTerminated(source));
 353 }
 354
 355 }
 356
 357 InternalEncryptionServer::InternalEncryptionServer(ServerContext& srv,
 358                                                                                                    KeyServer& key) :
 359         server(srv),
 360         keyServer(key)
 361 {
 362         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::setMountPassword)(std::string));
 363         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::mount)(std::vector<unsigned char>, unsigned int));
 364         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::umount)());
 365         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::isMounted)());
 366         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::encrypt)(std::string, unsigned int));
 367         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::decrypt)(std::string));
 368         server.expose(this, "", (int)(InternalEncryptionServer::isPasswordInitialized)());
 369         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::recovery)());
 370         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::initPassword)(std::string));
 371         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::cleanPassword)(std::string));
 372         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::changePassword)(std::string, std::string));
 373         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::verifyPassword)(std::string));
 374         server.expose(this, "", (int)(InternalEncryptionServer::getState)());
 375         server.expose(this, "", (unsigned int)(InternalEncryptionServer::getSupportedOptions)());
 376         server.expose(this, "", (std::string)(InternalEncryptionServer::getDevicePath)());
 377
 378         server.createNotification("InternalEncryptionServer::mount");
 379
 380         std::string source = findDevPath();
 381
 382         engine.reset(new INTERNAL_ENGINE(
 383                 source, INTERNAL_PATH,
 384                 ProgressBar([](int v) {
 385                         ::vconf_set_str(VCONFKEY_ODE_ENCRYPT_PROGRESS,
 386                                                         std::to_string(v).c_str());
 387                 })
 388         ));
 389 }
 390
 391 InternalEncryptionServer::~InternalEncryptionServer()
 392 {
 393 }
 394
 395 int InternalEncryptionServer::setMountPassword(const std::string& password)
 396 {
 397         const std::string& dev = engine->getSource();
 398
 399         // check if upgrade flag exists
 400         if(UpgradeSupport::removeUpgradeFlag()) {
 401                 INFO("Upgrade flag detected.");
 402                 // try to load the master key
 403                 try {
 404                         mountKey = UpgradeSupport::loadMasterKey(dev);
 405
 406                         // encrypt the master key with given password
 407                         return keyServer.changePassword2(dev, mountKey, password);
 408                 } catch (const runtime::Exception&) {
 409                         INFO("Failed to load the master key stored during upgrade.");
 410                 }
 411         }
 412
 413         return keyServer.get(dev, password, mountKey);
 414 }
 415
 416 int InternalEncryptionServer::mount(const std::vector<unsigned char> &mk, unsigned int options)
 417 {
 418         if (mountKey.empty() && mk.empty()) {
 419                 ERROR(SINK, "You need to set master key first.");
 420                 return error::NoData;
 421         }
 422
 423         BinaryData key = mk.empty() ? mountKey : mk;
 424         mountKey.clear();
 425
 426         if (getState() != State::Encrypted) {
 427                 INFO(SINK, "Cannot mount, SD partition's state incorrect.");
 428                 return error::NoSuchDevice;
 429         }
 430
 431         if (engine->isMounted()) {
 432                 INFO(SINK, "Partition already mounted.");
 433                 return error::None;
 434         }
 435
 436         INFO(SINK, "Mounting internal storage.");
 437         try {
 438                 engine->mount(key, getOptions());
 439
 440                 server.notify("InternalEncryptionServer::mount");
 441
 442                 runtime::File("/tmp/.lazy_mount").create(O_WRONLY);
 443                 runtime::File("/tmp/.unlock_mnt").create(O_WRONLY);
 444         } catch (runtime::Exception &e) {
 445                 ERROR(SINK, "Mount failed: " + std::string(e.what()));
 446                 return error::Unknown;
 447         }
 448
 449         return error::None;
 450 }
 451
 452 int InternalEncryptionServer::isMounted()
 453 {
 454         int ret = 0;
 455         try {
 456                 ret = engine->isMounted() ? 1 : 0;
 457         } catch (runtime::Exception &e) {
 458                 ERROR(SINK, "Failed to access the mount flag");
 459                 return error::Unknown;
 460         }
 461         return ret;
 462 }
 463
 464 int InternalEncryptionServer::umount()
 465 {
 466         if (getState() != State::Encrypted) {
 467                 ERROR(SINK, "Cannot umount, partition's state incorrect.");
 468                 return error::NoSuchDevice;
 469         }
 470
 471         if (!engine->isMounted()) {
 472                 INFO(SINK, "Partition already umounted.");
 473                 return error::None;
 474         }
 475
 476         INFO(SINK, "Closing all processes using internal storage.");
 477         try {
 478                 stopSystemdUnits();
 479                 INFO(SINK, "Umounting internal storage.");
 480                 unmountInternalStorage("/dev/mapper/userdata");
 481                 engine->umount();
 482         } catch (runtime::Exception &e) {
 483                 ERROR(SINK, "Umount failed: " + std::string(e.what()));
 484                 return error::Unknown;
 485         }
 486
 487         return error::None;
 488 }
 489
 490 int InternalEncryptionServer::encrypt(const std::string& password, unsigned int options)
 491 {
 492         if (getState() != State::Unencrypted) {
 493                 ERROR(SINK, "Cannot encrypt, partition's state incorrect.");
 494                 return error::NoSuchDevice;
 495         }
 496
 497         BinaryData masterKey;
 498         int ret = keyServer.get(engine->getSource(), password, masterKey);
 499         if (ret != error::None)
 500                 return ret;
 501
 502         auto encryptWorker = [masterKey, options, this]() {
 503                 try {
 504                         showProgressUI("encrypt");
 505                         ::sleep(1);
 506
 507                         runtime::File file("/opt/etc/.odeprogress");
 508                         file.create(0640);
 509
 510                         std::string source = engine->getSource();
 511                         auto mntPaths = findMountPointsByDevice(source);
 512
 513                         if (!mntPaths.empty()) {
 514                                 INFO(SINK, "Closing all processes using internal storage.");
 515                                 stopSystemdUnits();
 516
 517                                 INFO(SINK, "Unmounting internal storage.");
 518                                 unmountInternalStorage(source);
 519                         }
 520
 521                         INFO(SINK, "Encryption started.");
 522                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_encrypted");
 523                         try {
 524                                 engine->encrypt(masterKey, options);
 525                         } catch (runtime::Exception &e) {
 526                                 ERROR(SINK, e.what());
 527                                 if (!engine->isStarted()) {
 528                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 529                                         file.remove();
 530                                 }
 531                                 ::sync();
 532                                 ::reboot(RB_AUTOBOOT);
 533                         }
 534                         setOptions(options & getSupportedOptions());
 535
 536                         INFO(SINK, "Encryption completed.");
 537                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 538                         server.notify("InternalEncryptionServer::mount");
 539
 540                         file.remove();
 541
 542                         INFO(SINK, "Syncing disk and rebooting.");
 543                         ::sync();
 544                         ::reboot(RB_AUTOBOOT);
 545                 } catch (runtime::Exception &e) {
 546                         ERROR(SINK, "Encryption failed: " + std::string(e.what()));
 547                 }
 548         };
 549
 550         std::thread asyncWork(encryptWorker);
 551         asyncWork.detach();
 552
 553         return error::None;
 554 }
 555
 556 int InternalEncryptionServer::decrypt(const std::string& password)
 557 {
 558         if (getState() != State::Encrypted) {
 559                 ERROR(SINK, "Cannot decrypt, partition's state incorrect.");
 560                 return error::NoSuchDevice;
 561         }
 562
 563         BinaryData masterKey;
 564         int ret = keyServer.get(engine->getSource(), password, masterKey);
 565         if (ret != error::None)
 566                 return ret;
 567
 568         auto decryptWorker = [masterKey, this]() {
 569                 try {
 570                         showProgressUI("decrypt");
 571                         ::sleep(1);
 572
 573                         runtime::File file("/opt/etc/.odeprogress");
 574                         file.create(0640);
 575
 576                         if (engine->isMounted()) {
 577                                 INFO(SINK, "Closing all processes using internal storage.");
 578                                 stopSystemdUnits();
 579
 580                                 INFO(SINK, "Umounting internal storage.");
 581                                 unmountInternalStorage("/dev/mapper/userdata");
 582                                 engine->umount();
 583                         }
 584
 585                         INFO(SINK, "Decryption started.");
 586                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_decrypted");
 587                         try {
 588                                 engine->decrypt(masterKey, getOptions());
 589                         } catch (runtime::Exception &e) {
 590                                 ERROR(SINK, e.what());
 591                                 if (!engine->isStarted()) {
 592                                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 593                                         file.remove();
 594                                 }
 595                                 ::sync();
 596                                 ::reboot(RB_AUTOBOOT);
 597                         }
 598
 599                         INFO(SINK, "Decryption complete.");
 600                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 601
 602                         file.remove();
 603
 604                         INFO(SINK, "Syncing disk and rebooting.");
 605                         ::sync();
 606                         ::reboot(RB_AUTOBOOT);
 607                 } catch (runtime::Exception &e) {
 608                         ERROR(SINK, "Decryption failed: " + std::string(e.what()));
 609                 }
 610         };
 611
 612         std::thread asyncWork(decryptWorker);
 613         asyncWork.detach();
 614
 615         return error::None;
 616 }
 617
 618 int InternalEncryptionServer::recovery()
 619 {
 620         int state = getState();
 621
 622         if (state == State::Unencrypted)
 623                 return error::NoSuchDevice;
 624
 625         runtime::File file("/opt/.factoryreset");
 626         file.create(0640);
 627
 628         ::sync();
 629         try {
 630                 dbus::Connection& systemDBus = dbus::Connection::getSystem();
 631                 systemDBus.methodcall("org.tizen.system.deviced",
 632                                                                 "/Org/Tizen/System/DeviceD/Power",
 633                                                                 "org.tizen.system.deviced.power",
 634                                                                 "reboot",
 635                                                                 -1, "()", "(si)", "reboot", 0);
 636         } catch (runtime::Exception &e) {
 637                 ::reboot(RB_AUTOBOOT);
 638         }
 639         return error::None;
 640 }
 641
 642 int InternalEncryptionServer::isPasswordInitialized()
 643 {
 644         return keyServer.isInitialized(engine->getSource());
 645 }
 646
 647 int InternalEncryptionServer::initPassword(const std::string& password)
 648 {
 649         return keyServer.init(engine->getSource(), password, Key::DEFAULT_256BIT);
 650 }
 651
 652 int InternalEncryptionServer::cleanPassword(const std::string& password)
 653 {
 654         return keyServer.remove(engine->getSource(), password);
 655 }
 656
 657 int InternalEncryptionServer::changePassword(const std::string& oldPassword,
 658                                                                                 const std::string& newPassword)
 659 {
 660         return keyServer.changePassword(engine->getSource(), oldPassword, newPassword);
 661 }
 662
 663 int InternalEncryptionServer::verifyPassword(const std::string& password)
 664 {
 665         return keyServer.verifyPassword(engine->getSource(), password);
 666 }
 667
 668 int InternalEncryptionServer::getState()
 669 {
 670         char *value = ::vconf_get_str(VCONFKEY_ODE_CRYPTO_STATE);
 671         if (value == NULL) {
 672                 throw runtime::Exception("Failed to get vconf value.");
 673         }
 674
 675         std::string valueStr(value);
 676         free(value);
 677
 678         if (valueStr == "encrypted")
 679                 return State::Encrypted;
 680         else if (valueStr == "unencrypted")
 681                 return State::Unencrypted;
 682         else if (valueStr == "error_partially_encrypted" || valueStr == "error_partially_decrypted")
 683                 return State::Corrupted;
 684
 685         return State::Invalid;
 686 }
 687
 688 unsigned int InternalEncryptionServer::getSupportedOptions()
 689 {
 690         return engine->getSupportedOptions();
 691 }
 692
 693 std::string InternalEncryptionServer::getDevicePath() const
 694 {
 695         return engine->getSource();
 696 }
 697
 698 } // namespace ode