ctrl_dhcp6_srv.cc 23.6 KB
Newer Older
1
// Copyright (C) 2014-2017 Internet Systems Consortium, Inc. ("ISC")
Tomek Mrugalski's avatar
Tomek Mrugalski committed
2
//
3 4 5
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
Tomek Mrugalski's avatar
Tomek Mrugalski committed
6 7 8

#include <config.h>
#include <cc/data.h>
9
#include <cc/command_interpreter.h>
10
#include <config/command_mgr.h>
11
#include <dhcp/libdhcp++.h>
12
#include <dhcpsrv/cfgmgr.h>
13
#include <dhcpsrv/cfg_db_access.h>
Tomek Mrugalski's avatar
Tomek Mrugalski committed
14
#include <dhcp6/ctrl_dhcp6_srv.h>
15
#include <dhcp6/dhcp6to4_ipc.h>
Tomek Mrugalski's avatar
Tomek Mrugalski committed
16 17
#include <dhcp6/dhcp6_log.h>
#include <dhcp6/json_config_parser.h>
18 19
#include <hooks/hooks_manager.h>
#include <stats/stats_mgr.h>
Francis Dupont's avatar
Francis Dupont committed
20
#include <cfgrpt/config_report.h>
Tomek Mrugalski's avatar
Tomek Mrugalski committed
21

22
using namespace isc::config;
Tomek Mrugalski's avatar
Tomek Mrugalski committed
23 24
using namespace isc::data;
using namespace isc::hooks;
25
using namespace isc::stats;
Tomek Mrugalski's avatar
Tomek Mrugalski committed
26 27
using namespace std;

28 29 30 31 32 33 34
namespace {

// Name of the file holding server identifier.
static const char* SERVER_DUID_FILE = "kea-dhcp6-serverid";

}

Tomek Mrugalski's avatar
Tomek Mrugalski committed
35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
namespace isc {
namespace dhcp {

ControlledDhcpv6Srv* ControlledDhcpv6Srv::server_ = NULL;

ConstElementPtr
ControlledDhcpv6Srv::commandShutdownHandler(const string&, ConstElementPtr) {
    if (ControlledDhcpv6Srv::server_) {
        ControlledDhcpv6Srv::server_->shutdown();
    } else {
        LOG_WARN(dhcp6_logger, DHCP6_NOT_RUNNING);
        ConstElementPtr answer = isc::config::createAnswer(1, "Shutdown failure.");
        return (answer);
    }
    ConstElementPtr answer = isc::config::createAnswer(0, "Shutting down.");
    return (answer);
}

ConstElementPtr
ControlledDhcpv6Srv::commandLibReloadHandler(const string&, ConstElementPtr) {
55 56
    /// @todo delete any stored CalloutHandles referring to the old libraries
    /// Get list of currently loaded libraries and reload them.
57
    HookLibsCollection loaded = HooksManager::getLibraryInfo();
Tomek Mrugalski's avatar
Tomek Mrugalski committed
58 59 60 61 62 63 64 65 66 67 68 69 70 71
    bool status = HooksManager::loadLibraries(loaded);
    if (!status) {
        LOG_ERROR(dhcp6_logger, DHCP6_HOOKS_LIBS_RELOAD_FAIL);
        ConstElementPtr answer = isc::config::createAnswer(1,
                                 "Failed to reload hooks libraries.");
        return (answer);
    }
    ConstElementPtr answer = isc::config::createAnswer(0,
                             "Hooks libraries successfully reloaded.");
    return (answer);
}

ConstElementPtr
ControlledDhcpv6Srv::commandConfigReloadHandler(const string&, ConstElementPtr args) {
72
    // Use set-config as it handles logging and server config
73
    return (commandSetConfigHandler("set-config", args));
Tomek Mrugalski's avatar
Tomek Mrugalski committed
74 75
}

76
ConstElementPtr
77
ControlledDhcpv6Srv::commandConfigGetHandler(const string&,
78 79 80 81 82 83
                                             ConstElementPtr /*args*/) {
    ConstElementPtr config = CfgMgr::instance().getCurrentCfg()->toElement();

    return (createAnswer(0, config));
}

84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153
ConstElementPtr
ControlledDhcpv6Srv::commandConfigWriteHandler(const string&, ConstElementPtr args) {
    string filename;

    if (args) {
        if (args->getType() != Element::map) {
            return (createAnswer(CONTROL_RESULT_ERROR, "Argument must be a map"));
        }
        ConstElementPtr filename_param = args->get("filename");
        if (filename_param) {
            if (filename_param->getType() != Element::string) {
                return (createAnswer(CONTROL_RESULT_ERROR,
                                     "passed parameter 'filename' is not a string"));
            }
            filename = filename_param->stringValue();
        }
    }

    if (filename.empty()) {
        // filename parameter was not specified, so let's use whatever we remember
        // from the command-line
        filename = getConfigFile();
        if (filename.empty()) {
            return (createAnswer(CONTROL_RESULT_ERROR, "Unable to determine filename."
                                 "Please specify filename explicitly."));
        }
    }

    // Now do the sanity checks on the filename
    if (filename.find("..") != string::npos) {
        // Trying to escape the directory with .. nope.
        return (createAnswer(CONTROL_RESULT_ERROR,
                             "Using '..' in filename is not allowed."));
    }

    if (filename.find("\\") != string::npos) {
        // Trying to inject escapes (possibly to inject quotes and something
        // nasty afterward)
        return (createAnswer(CONTROL_RESULT_ERROR,
                             "Using \\ in filename is not allowed."));
    }

    if (filename[0] == '/') {
        // Absolute paths are not allowed.
        return (createAnswer(CONTROL_RESULT_ERROR,
                             "Absolute path in filename is not allowed."));
    }

    // Ok, it's time to write the file.
    size_t size = 0;
    try {
        size = writeConfigFile(filename);
    } catch (const isc::Exception& ex) {
        return (createAnswer(CONTROL_RESULT_ERROR, string("Error during write-config:")
                             + ex.what()));
    }
    if (size == 0) {
        return (createAnswer(CONTROL_RESULT_ERROR, "Error writing configuration to "
                             + filename));
    }

    // Ok, it's time to return the successful response.
    ElementPtr params = Element::createMap();
    params->set("size", Element::create(static_cast<long long>(size)));
    params->set("filename", Element::create(filename));

    return (createAnswer(CONTROL_RESULT_SUCCESS, "Configuration written to "
                         + filename + " successful", params));
}

154 155 156
ConstElementPtr
ControlledDhcpv6Srv::commandSetConfigHandler(const string&,
                                             ConstElementPtr args) {
157
    const int status_code = CONTROL_RESULT_ERROR;
158 159 160 161 162
    ConstElementPtr dhcp6;
    string message;

    // Command arguments are expected to be:
    // { "Dhcp6": { ... }, "Logging": { ... } }
163 164
    // The Logging component is technically optional. If it's not supplied
    // logging will revert to default logging.
165 166 167 168 169 170 171 172 173 174
    if (!args) {
        message = "Missing mandatory 'arguments' parameter.";
    } else {
        dhcp6 = args->get("Dhcp6");
        if (!dhcp6) {
            message = "Missing mandatory 'Dhcp6' parameter.";
        } else if (dhcp6->getType() != Element::map) {
            message = "'Dhcp6' parameter expected to be a map.";
        }
    }
Tomek Mrugalski's avatar
Tomek Mrugalski committed
175

176 177 178 179 180 181
    if (!message.empty()) {
        // Something is amiss with arguments, return a failure response.
        ConstElementPtr result = isc::config::createAnswer(status_code,
                                                           message);
        return (result);
    }
182

183 184 185 186 187
    // We are starting the configuration process so we should remove any
    // staging configuration that has been created during previous
    // configuration attempts.
    CfgMgr::instance().rollback();

188
    // Logging is a sibling element and must be parsed explicitly.
189
    // The call to configureLogger parses the given Logging element if
190
    // not null, into the staging config.  Note this does not alter the
191
    // current loggers, they remain in effect until we apply the
192 193
    // logging config below.  If no logging is supplied logging will
    // revert to default logging.
194 195 196
    Daemon::configureLogger(args->get("Logging"),
                            CfgMgr::instance().getStagingCfg());

197
    // Now we configure the server proper.
198 199 200 201 202 203 204
    ConstElementPtr result = processConfig(dhcp6);

    // If the configuration parsed successfully, apply the new logger
    // configuration and the commit the new configuration.  We apply
    // the logging first in case there's a configuration failure.
    int rcode = 0;
    isc::config::parseAnswer(rcode, result);
205
    if (rcode == CONTROL_RESULT_SUCCESS) {
206 207 208 209 210 211 212
        CfgMgr::instance().getStagingCfg()->applyLoggingCfg();

        // Use new configuration.
        CfgMgr::instance().commit();
    }

    return (result);
Tomek Mrugalski's avatar
Tomek Mrugalski committed
213 214
}

Francis Dupont's avatar
Francis Dupont committed
215 216 217
ConstElementPtr
ControlledDhcpv6Srv::commandConfigTestHandler(const string&,
                                              ConstElementPtr args) {
218
    const int status_code = CONTROL_RESULT_ERROR; // 1 indicates an error
Francis Dupont's avatar
Francis Dupont committed
219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251
    ConstElementPtr dhcp6;
    string message;

    // Command arguments are expected to be:
    // { "Dhcp6": { ... }, "Logging": { ... } }
    // The Logging component is technically optional. If it's not supplied
    // logging will revert to default logging.
    if (!args) {
        message = "Missing mandatory 'arguments' parameter.";
    } else {
        dhcp6 = args->get("Dhcp6");
        if (!dhcp6) {
            message = "Missing mandatory 'Dhcp6' parameter.";
        } else if (dhcp6->getType() != Element::map) {
            message = "'Dhcp6' parameter expected to be a map.";
        }
    }

    if (!message.empty()) {
        // Something is amiss with arguments, return a failure response.
        ConstElementPtr result = isc::config::createAnswer(status_code,
                                                           message);
        return (result);
    }

    // We are starting the configuration process so we should remove any
    // staging configuration that has been created during previous
    // configuration attempts.
    CfgMgr::instance().rollback();

    // Now we check the server proper.
    return (checkConfig(dhcp6));
}
252

Francis Dupont's avatar
Francis Dupont committed
253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270
ConstElementPtr
ControlledDhcpv6Srv::commandVersionGetHandler(const string&, ConstElementPtr) {
    ElementPtr extended = Element::create(Dhcpv6Srv::getVersion(true));
    ElementPtr arguments = Element::createMap();
    arguments->set("extended", extended);
    ConstElementPtr answer = isc::config::createAnswer(0,
                                Dhcpv6Srv::getVersion(false),
                                arguments);
    return (answer);
}

ConstElementPtr
ControlledDhcpv6Srv::commandBuildReportHandler(const string&, ConstElementPtr) {
    ConstElementPtr answer =
        isc::config::createAnswer(0, isc::detail::getConfigReport());
    return (answer);
}

271
ConstElementPtr
272
ControlledDhcpv6Srv::commandLeasesReclaimHandler(const string&,
Francis Dupont's avatar
Francis Dupont committed
273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293
                                                 ConstElementPtr args) {
    int status_code = 1;
    string message;

    // args must be { "remove": <bool> }
    if (!args) {
        message = "Missing mandatory 'remove' parameter.";
    } else {
        ConstElementPtr remove_name = args->get("remove");
        if (!remove_name) {
            message = "Missing mandatory 'remove' parameter.";
        } else if (remove_name->getType() != Element::boolean) {
            message = "'remove' parameter expected to be a boolean.";
        } else {
            bool remove_lease = remove_name->boolValue();
            server_->alloc_engine_->reclaimExpiredLeases6(0, 0, remove_lease);
            status_code = 0;
            message = "Reclamation of expired leases is complete.";
        }
    }
    ConstElementPtr answer = isc::config::createAnswer(status_code, message);
294 295 296
    return (answer);
}

Tomek Mrugalski's avatar
Tomek Mrugalski committed
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320
isc::data::ConstElementPtr
ControlledDhcpv6Srv::processCommand(const std::string& command,
                                    isc::data::ConstElementPtr args) {
    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_COMMAND, DHCP6_COMMAND_RECEIVED)
              .arg(command).arg(args->str());

    ControlledDhcpv6Srv* srv = ControlledDhcpv6Srv::getInstance();

    if (!srv) {
        ConstElementPtr no_srv = isc::config::createAnswer(1,
          "Server object not initialized, can't process command '" +
          command + "'.");
        return (no_srv);
    }

    try {
        if (command == "shutdown") {
            return (srv->commandShutdownHandler(command, args));

        } else if (command == "libreload") {
            return (srv->commandLibReloadHandler(command, args));

        } else if (command == "config-reload") {
            return (srv->commandConfigReloadHandler(command, args));
Francis Dupont's avatar
Francis Dupont committed
321

322 323 324
        } else if (command == "set-config") {
            return (srv->commandSetConfigHandler(command, args));

325 326
        } else if (command == "config-get") {
            return (srv->commandConfigGetHandler(command, args));
327

Francis Dupont's avatar
Francis Dupont committed
328 329 330
        } else if (command == "config-test") {
            return (srv->commandConfigTestHandler(command, args));

Francis Dupont's avatar
Francis Dupont committed
331 332 333 334 335 336
        } else if (command == "version-get") {
            return (srv->commandVersionGetHandler(command, args));

        } else if (command == "build-report") {
            return (srv->commandBuildReportHandler(command, args));

Francis Dupont's avatar
Francis Dupont committed
337 338
        } else if (command == "leases-reclaim") {
            return (srv->commandLeasesReclaimHandler(command, args));
339 340 341 342

        } else if (command == "config-write") {
            return (srv->commandConfigWriteHandler(command, args));

Tomek Mrugalski's avatar
Tomek Mrugalski committed
343 344 345 346 347 348 349 350 351 352 353 354 355
        }

        return (isc::config::createAnswer(1, "Unrecognized command:"
                                          + command));

    } catch (const Exception& ex) {
        return (isc::config::createAnswer(1, "Error while processing command '"
                                          + command + "':" + ex.what()));
    }
}

isc::data::ConstElementPtr
ControlledDhcpv6Srv::processConfig(isc::data::ConstElementPtr config) {
Tomek Mrugalski's avatar
Tomek Mrugalski committed
356 357 358 359

    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_COMMAND, DHCP6_CONFIG_RECEIVED)
              .arg(config->str());

Tomek Mrugalski's avatar
Tomek Mrugalski committed
360 361 362
    ControlledDhcpv6Srv* srv = ControlledDhcpv6Srv::getInstance();

    if (!srv) {
363 364 365
        ConstElementPtr no_srv = isc::config::createAnswer(
            CONTROL_RESULT_ERROR,
            "Server object not initialized, can't process config.");
Tomek Mrugalski's avatar
Tomek Mrugalski committed
366 367 368
        return (no_srv);
    }

369 370 371 372 373 374 375 376 377 378 379
    // We're going to modify the timers configuration. This is not allowed
    // when the thread is running.
    try {
        TimerMgr::instance()->stopThread();
    } catch (const std::exception& ex) {
        std::ostringstream err;
        err << "Unable to stop worker thread running timers: "
            << ex.what() << ".";
        return (isc::config::createAnswer(1, err.str()));
    }

Tomek Mrugalski's avatar
Tomek Mrugalski committed
380 381 382 383 384 385 386 387 388 389 390 391 392 393 394
    ConstElementPtr answer = configureDhcp6Server(*srv, config);

    // Check that configuration was successful. If not, do not reopen sockets
    // and don't bother with DDNS stuff.
    try {
        int rcode = 0;
        isc::config::parseAnswer(rcode, answer);
        if (rcode != 0) {
            return (answer);
        }
    } catch (const std::exception& ex) {
        return (isc::config::createAnswer(1, "Failed to process configuration:"
                                          + string(ex.what())));
    }

395 396 397 398 399 400 401 402 403 404 405
    // Re-open lease and host database with new parameters.
    try {
        CfgDbAccessPtr cfg_db = CfgMgr::instance().getStagingCfg()->getCfgDbAccess();
        cfg_db->setAppendedParameters("universe=6");
        cfg_db->createManagers();

    } catch (const std::exception& ex) {
        return (isc::config::createAnswer(1, "Unable to open database: "
                                          + std::string(ex.what())));
    }

406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423
    // Regenerate server identifier if needed.
    try {
        const std::string duid_file = CfgMgr::instance().getDataDir() + "/" +
            std::string(SERVER_DUID_FILE);
        DuidPtr duid = CfgMgr::instance().getStagingCfg()->getCfgDUID()->create(duid_file);
        server_->serverid_.reset(new Option(Option::V6, D6O_SERVERID, duid->getDuid()));
        if (duid) {
            LOG_INFO(dhcp6_logger, DHCP6_USING_SERVERID)
                .arg(duid->toText())
                .arg(duid_file);
        }

    } catch (const std::exception& ex) {
        std::ostringstream err;
        err << "unable to configure server identifier: " << ex.what();
        return (isc::config::createAnswer(1, err.str()));
    }

Tomek Mrugalski's avatar
Tomek Mrugalski committed
424 425 426 427 428 429 430
    // Server will start DDNS communications if its enabled.
    try {
        srv->startD2();
    } catch (const std::exception& ex) {
        std::ostringstream err;
        err << "error starting DHCP_DDNS client "
                " after server reconfiguration: " << ex.what();
431 432 433 434 435
        return (isc::config::createAnswer(1, err.str()));
    }

    // Setup DHCPv4-over-DHCPv6 IPC
    try {
436
        Dhcp6to4Ipc::instance().open();
437 438 439 440
    } catch (const std::exception& ex) {
        std::ostringstream err;
        err << "error starting DHCPv4-over-DHCPv6 IPC "
               " after server reconfiguration: " << ex.what();
Tomek Mrugalski's avatar
Tomek Mrugalski committed
441 442 443 444
        return (isc::config::createAnswer(1, err.str()));
    }

    // Configuration may change active interfaces. Therefore, we have to reopen
445 446 447 448 449 450
    // sockets according to new configuration. It is possible that this
    // operation will fail for some interfaces but the openSockets function
    // guards against exceptions and invokes a callback function to
    // log warnings. Since we allow that this fails for some interfaces there
    // is no need to rollback configuration if socket fails to open on any
    // of the interfaces.
451
    CfgMgr::instance().getStagingCfg()->getCfgIface()->openSockets(AF_INET6, srv->getPort());
Tomek Mrugalski's avatar
Tomek Mrugalski committed
452

453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479
    // Install the timers for handling leases reclamation.
    try {
        CfgMgr::instance().getStagingCfg()->getCfgExpiration()->
            setupTimers(&ControlledDhcpv6Srv::reclaimExpiredLeases,
                        &ControlledDhcpv6Srv::deleteExpiredReclaimedLeases,
                        server_);

    } catch (const std::exception& ex) {
        std::ostringstream err;
        err << "unable to setup timers for periodically running the"
            " reclamation of the expired leases: "
            << ex.what() << ".";
        return (isc::config::createAnswer(1, err.str()));
    }

    // Start worker thread if there are any timers installed.
    if (TimerMgr::instance()->timersCount() > 0) {
        try {
            TimerMgr::instance()->startThread();
        } catch (const std::exception& ex) {
            std::ostringstream err;
            err << "Unable to start worker thread running timers: "
                << ex.what() << ".";
            return (isc::config::createAnswer(1, err.str()));
        }
    }

480 481 482 483
    // Finally, we can commit runtime option definitions in libdhcp++. This is
    // exception free.
    LibDHCP::commitRuntimeOptionDefs();

Tomek Mrugalski's avatar
Tomek Mrugalski committed
484 485 486
    return (answer);
}

Francis Dupont's avatar
Francis Dupont committed
487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503
isc::data::ConstElementPtr
ControlledDhcpv6Srv::checkConfig(isc::data::ConstElementPtr config) {
 
    LOG_DEBUG(dhcp6_logger, DBG_DHCP6_COMMAND, DHCP6_CONFIG_RECEIVED)
        .arg(config->str());
 
    ControlledDhcpv6Srv* srv = ControlledDhcpv6Srv::getInstance();
 
    if (!srv) {
        ConstElementPtr no_srv = isc::config::createAnswer(1,
            "Server object not initialized, can't process config.");
        return (no_srv);
    }
 
    return (configureDhcp6Server(*srv, config, true));
}

Tomek Mrugalski's avatar
Tomek Mrugalski committed
504
ControlledDhcpv6Srv::ControlledDhcpv6Srv(uint16_t port)
505
    : Dhcpv6Srv(port), io_service_(), timer_mgr_(TimerMgr::instance()) {
Tomek Mrugalski's avatar
Tomek Mrugalski committed
506 507 508 509 510
    if (server_) {
        isc_throw(InvalidOperation,
                  "There is another Dhcpv6Srv instance already.");
    }
    server_ = this; // remember this instance for use in callback
511

512 513
    // These are the commands always supported by the DHCPv6 server.
    // Please keep the list in alphabetic order.
Francis Dupont's avatar
Francis Dupont committed
514 515 516
    CommandMgr::instance().registerCommand("build-report",
        boost::bind(&ControlledDhcpv6Srv::commandBuildReportHandler, this, _1, _2));

517 518 519 520 521
    CommandMgr::instance().registerCommand("config-get",
        boost::bind(&ControlledDhcpv6Srv::commandConfigGetHandler, this, _1, _2));

    /// @todo: register config-reload (see CtrlDhcpv6Srv::commandConfigReloadHandler)

Francis Dupont's avatar
Francis Dupont committed
522 523 524
    CommandMgr::instance().registerCommand("config-test",
        boost::bind(&ControlledDhcpv6Srv::commandConfigTestHandler, this, _1, _2));

525 526 527 528 529
    CommandMgr::instance().registerCommand("config-write",
        boost::bind(&ControlledDhcpv6Srv::commandConfigWriteHandler, this, _1, _2));

    CommandMgr::instance().registerCommand("leases-reclaim",
        boost::bind(&ControlledDhcpv6Srv::commandLeasesReclaimHandler, this, _1, _2));
530

531 532
    CommandMgr::instance().registerCommand("libreload",
        boost::bind(&ControlledDhcpv6Srv::commandLibReloadHandler, this, _1, _2));
533

534 535 536
    CommandMgr::instance().registerCommand("set-config",
        boost::bind(&ControlledDhcpv6Srv::commandSetConfigHandler, this, _1, _2));

537 538
    CommandMgr::instance().registerCommand("shutdown",
        boost::bind(&ControlledDhcpv6Srv::commandShutdownHandler, this, _1, _2));
539

Francis Dupont's avatar
Francis Dupont committed
540 541 542
    CommandMgr::instance().registerCommand("version-get",
        boost::bind(&ControlledDhcpv6Srv::commandVersionGetHandler, this, _1, _2));

543 544 545 546 547 548 549
    // Register statistic related commands
    CommandMgr::instance().registerCommand("statistic-get",
        boost::bind(&StatsMgr::statisticGetHandler, _1, _2));

    CommandMgr::instance().registerCommand("statistic-get-all",
        boost::bind(&StatsMgr::statisticGetAllHandler, _1, _2));

550 551 552
    CommandMgr::instance().registerCommand("statistic-reset",
        boost::bind(&StatsMgr::statisticResetHandler, _1, _2));

553 554 555
    CommandMgr::instance().registerCommand("statistic-reset-all",
        boost::bind(&StatsMgr::statisticResetAllHandler, _1, _2));

556 557 558
    CommandMgr::instance().registerCommand("statistic-remove",
        boost::bind(&StatsMgr::statisticRemoveHandler, _1, _2));

559 560
    CommandMgr::instance().registerCommand("statistic-remove-all",
        boost::bind(&StatsMgr::statisticRemoveAllHandler, _1, _2));
Tomek Mrugalski's avatar
Tomek Mrugalski committed
561 562 563 564 565 566 567 568
}

void ControlledDhcpv6Srv::shutdown() {
    io_service_.stop(); // Stop ASIO transmissions
    Dhcpv6Srv::shutdown(); // Initiate DHCPv6 shutdown procedure.
}

ControlledDhcpv6Srv::~ControlledDhcpv6Srv() {
569 570 571
    try {
        cleanup();

572 573
        // Stop worker thread running timers, if it is running. Then
        // unregister any timers.
574
        timer_mgr_->stopThread();
575
        timer_mgr_->unregisterTimers();
576 577 578 579

        // Close the command socket (if it exists).
        CommandMgr::instance().closeCommandSocket();

580
        // Deregister any registered commands (please keep in alphabetic order)
Francis Dupont's avatar
Francis Dupont committed
581
        CommandMgr::instance().deregisterCommand("build-report");
582
        CommandMgr::instance().deregisterCommand("config-get");
Francis Dupont's avatar
Francis Dupont committed
583
        CommandMgr::instance().deregisterCommand("config-test");
584
        CommandMgr::instance().deregisterCommand("config-write");
585
        CommandMgr::instance().deregisterCommand("leases-reclaim");
Francis Dupont's avatar
Francis Dupont committed
586
        CommandMgr::instance().deregisterCommand("libreload");
587 588
        CommandMgr::instance().deregisterCommand("set-config");
        CommandMgr::instance().deregisterCommand("shutdown");
589 590
        CommandMgr::instance().deregisterCommand("statistic-get");
        CommandMgr::instance().deregisterCommand("statistic-get-all");
591
        CommandMgr::instance().deregisterCommand("statistic-remove");
592
        CommandMgr::instance().deregisterCommand("statistic-remove-all");
593 594
        CommandMgr::instance().deregisterCommand("statistic-reset");
        CommandMgr::instance().deregisterCommand("statistic-reset-all");
Francis Dupont's avatar
Francis Dupont committed
595
        CommandMgr::instance().deregisterCommand("version-get");
596 597 598 599 600 601

    } catch (...) {
        // Don't want to throw exceptions from the destructor. The server
        // is shutting down anyway.
        ;
    }
602

Tomek Mrugalski's avatar
Tomek Mrugalski committed
603 604 605 606 607 608 609 610 611 612 613 614
    server_ = NULL; // forget this instance. There should be no callback anymore
                    // at this stage anyway.
}

void ControlledDhcpv6Srv::sessionReader(void) {
    // Process one asio event. If there are more events, iface_mgr will call
    // this callback more than once.
    if (server_) {
        server_->io_service_.run_one();
    }
}

615 616 617
void
ControlledDhcpv6Srv::reclaimExpiredLeases(const size_t max_leases,
                                          const uint16_t timeout,
618 619
                                          const bool remove_lease,
                                          const uint16_t max_unwarned_cycles) {
620
    server_->alloc_engine_->reclaimExpiredLeases6(max_leases, timeout,
621 622
                                                  remove_lease,
                                                  max_unwarned_cycles);
623 624 625 626 627 628 629 630 631 632 633 634
    // We're using the ONE_SHOT timer so there is a need to re-schedule it.
    TimerMgr::instance()->setup(CfgExpiration::RECLAIM_EXPIRED_TIMER_NAME);
}

void
ControlledDhcpv6Srv::deleteExpiredReclaimedLeases(const uint32_t secs) {
    server_->alloc_engine_->deleteExpiredReclaimedLeases6(secs);
    // We're using the ONE_SHOT timer so there is a need to re-schedule it.
    TimerMgr::instance()->setup(CfgExpiration::FLUSH_RECLAIMED_TIMER_NAME);
}


Tomek Mrugalski's avatar
Tomek Mrugalski committed
635 636
}; // end of isc::dhcp namespace
}; // end of isc namespace