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
  50 namespace ode {
  51
  52 namespace {
  53
  54 const char *PRIVILEGE_PLATFORM  = "http://tizen.org/privilege/internal/default/platform";
  55 const std::vector<std::string> blackListSystemdUnits = {
  56         "samsung-log-mgr.service",
  57 };
  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                 jobsCv.wait(lock, [this]{ return !removedJobs.empty(); });
 108
 109                 while(!removedJobs.empty()) {
 110                         bool match = (removedJobs.front().job == job);
 111                         bool done = (removedJobs.front().result == "done");
 112                         removedJobs.pop_front();
 113                         if (match)
 114                                 return done;
 115                 }
 116         };
 117 }
 118
 119 void JobWatch::jobRemoved(const dbus::Variant& parameters)
 120 {
 121         uint32_t id;
 122         const char* job;
 123         const char* unit;
 124         const char* result;
 125         parameters.get("(uoss)", &id, &job, &unit, &result);
 126         INFO(SINK, "id:" + std::to_string(id) + " job:" + job + " unit:" + unit + " result:" + result);
 127
 128         {
 129                 std::lock_guard<std::mutex> guard(jobsMutex);
 130                 removedJobs.emplace_back(id, job, unit, result);
 131         }
 132         jobsCv.notify_one();
 133 }
 134
 135 void stopKnownSystemdUnits()
 136 {
 137         std::vector<std::string> knownSystemdUnits;
 138         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 139         dbus::VariantIterator iter;
 140
 141         systemDBus.methodcall("org.freedesktop.systemd1",
 142                                                         "/org/freedesktop/systemd1",
 143                                                         "org.freedesktop.systemd1.Manager",
 144                                                         "ListUnits",
 145                                                         -1, "(a(ssssssouso))", "")
 146                                                                 .get("(a(ssssssouso))", &iter);
 147
 148         while (1) {
 149                 unsigned int dataUint;
 150                 char *dataStr[9];
 151                 int ret;
 152
 153                 ret = iter.get("(ssssssouso)", dataStr, dataStr + 1, dataStr + 2,
 154                                                 dataStr + 3, dataStr + 4, dataStr + 5,
 155                                                 dataStr + 6, &dataUint, dataStr + 7,
 156                                                 dataStr + 8);
 157
 158                 if (!ret) {
 159                         break;
 160                 }
 161
 162                 std::string unit(dataStr[0]);
 163                 if (unit == "security-manager.socket" ||
 164                                 unit == "connman.socket") {
 165                         knownSystemdUnits.insert(knownSystemdUnits.begin(), unit);
 166                 } else if (unit.compare(0, 5, "user@") == 0 ||
 167                         unit == "tlm.service" ||
 168                         unit == "resourced.service" ||
 169                         unit == "security-manager.service") {
 170                         knownSystemdUnits.push_back(unit);
 171                 }
 172         }
 173
 174         JobWatch watch(systemDBus);
 175
 176         for (const std::string& unit : knownSystemdUnits) {
 177                 INFO(SINK, "Stopping unit: " + unit);
 178                 const char* job = NULL;
 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                         throw runtime::Exception("Stopping unit: " + unit + " failed");
 187         }
 188 }
 189
 190 std::string getDecodedPath(const std::string &path, const std::string &prefix)
 191 {
 192         std::string ret = path;
 193         size_t pos = 0;
 194
 195         pos = ret.find(prefix);
 196         if (pos != std::string::npos)
 197                 ret = ret.substr(prefix.size(), ret.size());
 198
 199         pos = 0;
 200         while ((pos = ret.find("_", pos)) != std::string::npos) {
 201                 int a = std::stoi(std::string(1, ret.at(pos+1)), nullptr, 16);
 202                 int b = std::stoi(std::string(1, ret.at(pos+2)), nullptr, 16);
 203                 if (a < 0 || b < 0)
 204                         ret.replace(pos, 3, "_");
 205                 else
 206                         ret.replace(pos, 3, std::string(1, ((a << 4) | b)));
 207                 pos += 1;
 208         }
 209         return ret;
 210 }
 211
 212 void stopDependedSystemdUnits()
 213 {
 214         dbus::Connection& systemDBus = dbus::Connection::getSystem();
 215         std::set<std::string> unitsToStop;
 216
 217         for (pid_t pid : runtime::FileUser::getList(INTERNAL_PATH, true)) {
 218                 try {
 219                         char *unit = nullptr;
 220                         systemDBus.methodcall("org.freedesktop.systemd1",
 221                                                                         "/org/freedesktop/systemd1",
 222                                                                         "org.freedesktop.systemd1.Manager",
 223                                                                         "GetUnitByPID",
 224                                                                         -1, "(o)", "(u)", (unsigned int)pid)
 225                                                                                 .get("(o)", &unit);
 226
 227                         auto unescapedName = getDecodedPath(unit, "/org/freedesktop/systemd1/unit/");
 228                         unitsToStop.insert(unescapedName);
 229                 } catch (runtime::Exception &e) {
 230                         INFO(SINK, "Killing process: " + std::to_string(pid));
 231                         ::kill(pid, SIGKILL);
 232                 }
 233         }
 234
 235         JobWatch watch(systemDBus);
 236         for (auto unit : blackListSystemdUnits) {
 237                 unitsToStop.erase(unitsToStop.find(unit));
 238         }
 239
 240         for (const std::string& unit : unitsToStop) {
 241                 INFO(SINK, "Stopping unit: " + unit);
 242                 const char* job = NULL;
 243                 systemDBus.methodcall("org.freedesktop.systemd1",
 244                                                                 "/org/freedesktop/systemd1",
 245                                                                 "org.freedesktop.systemd1.Manager",
 246                                                                 "StopUnit",
 247                                                                 -1, "(o)", "(ss)", unit.c_str(), "flush").get("(o)", &job);
 248                 INFO(SINK, "Waiting for job: " + std::string(job));
 249                 if (!watch.waitForJob(job))
 250                         throw runtime::Exception("Stopping unit: " + unit + " failed");
 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                 throw runtime::Exception("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::encrypt)(std::string, unsigned int));
 368         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::decrypt)(std::string));
 369         server.expose(this, "", (int)(InternalEncryptionServer::isPasswordInitialized)());
 370         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::recovery)());
 371         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::initPassword)(std::string));
 372         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::cleanPassword)(std::string));
 373         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::changePassword)(std::string, std::string));
 374         server.expose(this, PRIVILEGE_PLATFORM, (int)(InternalEncryptionServer::verifyPassword)(std::string));
 375         server.expose(this, "", (int)(InternalEncryptionServer::getState)());
 376         server.expose(this, "", (unsigned int)(InternalEncryptionServer::getSupportedOptions)());
 377         server.expose(this, "", (std::string)(InternalEncryptionServer::getDevicePath)());
 378
 379         server.createNotification("InternalEncryptionServer::mount");
 380
 381         std::string source = findDevPath();
 382
 383         engine.reset(new INTERNAL_ENGINE(
 384                 source, INTERNAL_PATH,
 385                 ProgressBar([](int v) {
 386                         ::vconf_set_str(VCONFKEY_ODE_ENCRYPT_PROGRESS,
 387                                                         std::to_string(v).c_str());
 388                 })
 389         ));
 390 }
 391
 392 InternalEncryptionServer::~InternalEncryptionServer()
 393 {
 394 }
 395
 396 int InternalEncryptionServer::setMountPassword(const std::string& password)
 397 {
 398         return keyServer.get(engine->getSource(), password, mountKey);
 399 }
 400
 401 int InternalEncryptionServer::mount(const std::vector<unsigned char> &mk, unsigned int options)
 402 {
 403         if (mountKey.empty() && mk.empty()) {
 404                 ERROR(SINK, "You need to set master key first.");
 405                 return error::NoData;
 406         }
 407
 408         BinaryData key = mk.empty() ? mountKey : mk;
 409         mountKey.clear();
 410
 411         if (getState() != State::Encrypted) {
 412                 INFO(SINK, "Cannot mount, SD partition's state incorrect.");
 413                 return error::NoSuchDevice;
 414         }
 415
 416         if (engine->isMounted()) {
 417                 INFO(SINK, "Partition already mounted.");
 418                 return error::None;
 419         }
 420
 421         INFO(SINK, "Mounting internal storage.");
 422         try {
 423                 engine->mount(key, getOptions());
 424
 425                 server.notify("InternalEncryptionServer::mount");
 426
 427                 runtime::File("/tmp/.lazy_mount").create(O_WRONLY);
 428                 runtime::File("/tmp/.unlock_mnt").create(O_WRONLY);
 429         } catch (runtime::Exception &e) {
 430                 ERROR(SINK, "Mount failed: " + std::string(e.what()));
 431                 return error::Unknown;
 432         }
 433
 434         return error::None;
 435 }
 436
 437 int InternalEncryptionServer::umount()
 438 {
 439         if (getState() != State::Encrypted) {
 440                 ERROR(SINK, "Cannot umount, partition's state incorrect.");
 441                 return error::NoSuchDevice;
 442         }
 443
 444         if (!engine->isMounted()) {
 445                 INFO(SINK, "Partition already umounted.");
 446                 return error::None;
 447         }
 448
 449         INFO(SINK, "Closing all processes using internal storage.");
 450         try {
 451                 stopKnownSystemdUnits();
 452                 stopDependedSystemdUnits();
 453                 INFO(SINK, "Umounting internal storage.");
 454                 unmountInternalStorage("/dev/mapper/userdata");
 455                 engine->umount();
 456         } catch (runtime::Exception &e) {
 457                 ERROR(SINK, "Umount failed: " + std::string(e.what()));
 458                 return error::Unknown;
 459         }
 460
 461         return error::None;
 462 }
 463
 464 int InternalEncryptionServer::encrypt(const std::string& password, unsigned int options)
 465 {
 466         if (getState() != State::Unencrypted) {
 467                 ERROR(SINK, "Cannot encrypt, partition's state incorrect.");
 468                 return error::NoSuchDevice;
 469         }
 470
 471         BinaryData masterKey;
 472         int ret = keyServer.get(engine->getSource(), password, masterKey);
 473         if (ret != error::None)
 474                 return ret;
 475
 476         auto encryptWorker = [masterKey, options, this]() {
 477                 try {
 478                         showProgressUI("encrypt");
 479                         ::sleep(1);
 480
 481                         runtime::File file("/opt/etc/.odeprogress");
 482                         file.create(0640);
 483
 484                         INFO(SINK, "Closing all known systemd services that might be using internal storage.");
 485                         stopKnownSystemdUnits();
 486
 487                         std::string source = engine->getSource();
 488                         auto mntPaths = findMountPointsByDevice(source);
 489
 490                         if (!mntPaths.empty()) {
 491                                 INFO(SINK, "Closing all processes using internal storage.");
 492                                 stopDependedSystemdUnits();
 493
 494                                 INFO(SINK, "Unmounting internal storage.");
 495                                 unmountInternalStorage(source);
 496                         }
 497
 498                         INFO(SINK, "Encryption started.");
 499                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_encrypted");
 500                         engine->encrypt(masterKey, options);
 501                         setOptions(options & getSupportedOptions());
 502
 503                         INFO(SINK, "Encryption completed.");
 504                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "encrypted");
 505                         server.notify("InternalEncryptionServer::mount");
 506
 507                         file.remove();
 508
 509                         INFO(SINK, "Syncing disk and rebooting.");
 510                         ::sync();
 511                         ::reboot(RB_AUTOBOOT);
 512                 } catch (runtime::Exception &e) {
 513                         ERROR(SINK, "Encryption failed: " + std::string(e.what()));
 514                 }
 515         };
 516
 517         std::thread asyncWork(encryptWorker);
 518         asyncWork.detach();
 519
 520         return error::None;
 521 }
 522
 523 int InternalEncryptionServer::decrypt(const std::string& password)
 524 {
 525         if (getState() != State::Encrypted) {
 526                 ERROR(SINK, "Cannot decrypt, partition's state incorrect.");
 527                 return error::NoSuchDevice;
 528         }
 529
 530         BinaryData masterKey;
 531         int ret = keyServer.get(engine->getSource(), password, masterKey);
 532         if (ret != error::None)
 533                 return ret;
 534
 535         auto decryptWorker = [masterKey, this]() {
 536                 try {
 537                         showProgressUI("decrypt");
 538                         ::sleep(1);
 539
 540                         runtime::File file("/opt/etc/.odeprogress");
 541                         file.create(0640);
 542
 543                         if (engine->isMounted()) {
 544                                 INFO(SINK, "Closing all known systemd services that might be using internal storage.");
 545                                 stopKnownSystemdUnits();
 546                                 INFO(SINK, "Closing all processes using internal storage.");
 547                                 stopDependedSystemdUnits();
 548
 549                                 INFO(SINK, "Umounting internal storage.");
 550                                 unmountInternalStorage("/dev/mapper/userdata");
 551                                 engine->umount();
 552                         }
 553
 554                         INFO(SINK, "Decryption started.");
 555                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "error_partially_decrypted");
 556                         engine->decrypt(masterKey, getOptions());
 557
 558                         INFO(SINK, "Decryption complete.");
 559                         ::vconf_set_str(VCONFKEY_ODE_CRYPTO_STATE, "unencrypted");
 560
 561                         file.remove();
 562
 563                         INFO(SINK, "Syncing disk and rebooting.");
 564                         ::sync();
 565                         ::reboot(RB_AUTOBOOT);
 566                 } catch (runtime::Exception &e) {
 567                         ERROR(SINK, "Decryption failed: " + std::string(e.what()));
 568                 }
 569         };
 570
 571         std::thread asyncWork(decryptWorker);
 572         asyncWork.detach();
 573
 574         return error::None;
 575 }
 576
 577 int InternalEncryptionServer::recovery()
 578 {
 579         int state = getState();
 580
 581         if (state == State::Unencrypted)
 582                 return error::NoSuchDevice;
 583
 584         runtime::File file("/opt/.factoryreset");
 585         file.create(0640);
 586
 587         ::sync();
 588         try {
 589                 dbus::Connection& systemDBus = dbus::Connection::getSystem();
 590                 systemDBus.methodcall("org.tizen.system.deviced",
 591                                                                 "/Org/Tizen/System/DeviceD/Power",
 592                                                                 "org.tizen.system.deviced.power",
 593                                                                 "reboot",
 594                                                                 -1, "()", "(si)", "reboot", 0);
 595         } catch (runtime::Exception &e) {
 596                 ::reboot(RB_AUTOBOOT);
 597         }
 598         return error::None;
 599 }
 600
 601 int InternalEncryptionServer::isPasswordInitialized()
 602 {
 603         return keyServer.isInitialized(engine->getSource());
 604 }
 605
 606 int InternalEncryptionServer::initPassword(const std::string& password)
 607 {
 608         return keyServer.init(engine->getSource(), password, Key::DEFAULT_256BIT);
 609 }
 610
 611 int InternalEncryptionServer::cleanPassword(const std::string& password)
 612 {
 613         return keyServer.remove(engine->getSource(), password);
 614 }
 615
 616 int InternalEncryptionServer::changePassword(const std::string& oldPassword,
 617                                                                                 const std::string& newPassword)
 618 {
 619         return keyServer.changePassword(engine->getSource(), oldPassword, newPassword);
 620 }
 621
 622 int InternalEncryptionServer::verifyPassword(const std::string& password)
 623 {
 624         return keyServer.verifyPassword(engine->getSource(), password);
 625 }
 626
 627 int InternalEncryptionServer::getState()
 628 {
 629         char *value = ::vconf_get_str(VCONFKEY_ODE_CRYPTO_STATE);
 630         if (value == NULL) {
 631                 throw runtime::Exception("Failed to get vconf value.");
 632         }
 633
 634         std::string valueStr(value);
 635         free(value);
 636
 637         if (valueStr == "encrypted")
 638                 return State::Encrypted;
 639         else if (valueStr == "unencrypted")
 640                 return State::Unencrypted;
 641         else if (valueStr == "error_partially_encrypted" || valueStr == "error_partially_decrypted")
 642                 return State::Corrupted;
 643
 644         return State::Invalid;
 645 }
 646
 647 unsigned int InternalEncryptionServer::getSupportedOptions()
 648 {
 649         return engine->getSupportedOptions();
 650 }
 651
 652 std::string InternalEncryptionServer::getDevicePath() const
 653 {
 654         return engine->getSource();
 655 }
 656
 657 } // namespace ode