692 lines
21 KiB
C++
692 lines
21 KiB
C++
/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
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/**
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* Copyright (C) 2014 Named Data Networking Project
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* See COPYING for copyright and distribution information.
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*/
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#include "face-manager.hpp"
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#include "core/face-uri.hpp"
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#include "core/network-interface.hpp"
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#include "fw/face-table.hpp"
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#include "face/tcp-factory.hpp"
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#include "face/udp-factory.hpp"
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#include <ndn-cpp-dev/management/nfd-face-event-notification.hpp>
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#ifdef HAVE_UNIX_SOCKETS
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#include "face/unix-stream-factory.hpp"
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#endif // HAVE_UNIX_SOCKETS
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#ifdef HAVE_PCAP
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#include "face/ethernet-factory.hpp"
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#endif // HAVE_PCAP
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namespace nfd {
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NFD_LOG_INIT("FaceManager");
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const Name FaceManager::COMMAND_PREFIX("/localhost/nfd/faces");
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const size_t FaceManager::COMMAND_UNSIGNED_NCOMPS =
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FaceManager::COMMAND_PREFIX.size() +
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1 + // verb
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1; // verb options
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const size_t FaceManager::COMMAND_SIGNED_NCOMPS =
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FaceManager::COMMAND_UNSIGNED_NCOMPS +
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4; // (timestamp, nonce, signed info tlv, signature tlv)
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const FaceManager::SignedVerbAndProcessor FaceManager::SIGNED_COMMAND_VERBS[] =
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{
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SignedVerbAndProcessor(
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Name::Component("create"),
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&FaceManager::createFace
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),
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SignedVerbAndProcessor(
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Name::Component("destroy"),
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&FaceManager::destroyFace
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),
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};
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const FaceManager::UnsignedVerbAndProcessor FaceManager::UNSIGNED_COMMAND_VERBS[] =
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{
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UnsignedVerbAndProcessor(
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Name::Component("list"),
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&FaceManager::listFaces
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),
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UnsignedVerbAndProcessor(
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Name::Component("events"),
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&FaceManager::ignoreUnsignedVerb
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),
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};
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const Name FaceManager::LIST_COMMAND_PREFIX("/localhost/nfd/faces/list");
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const size_t FaceManager::LIST_COMMAND_NCOMPS = LIST_COMMAND_PREFIX.size();
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const Name FaceManager::EVENTS_COMMAND_PREFIX("/localhost/nfd/faces/events");
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FaceManager::FaceManager(FaceTable& faceTable,
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shared_ptr<InternalFace> face)
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: ManagerBase(face, FACE_MANAGER_PRIVILEGE)
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, m_faceTable(faceTable)
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, m_statusPublisher(m_faceTable, m_face, LIST_COMMAND_PREFIX)
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, m_notificationStream(m_face, EVENTS_COMMAND_PREFIX)
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, m_signedVerbDispatch(SIGNED_COMMAND_VERBS,
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SIGNED_COMMAND_VERBS +
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(sizeof(SIGNED_COMMAND_VERBS) / sizeof(SignedVerbAndProcessor)))
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, m_unsignedVerbDispatch(UNSIGNED_COMMAND_VERBS,
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UNSIGNED_COMMAND_VERBS +
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(sizeof(UNSIGNED_COMMAND_VERBS) / sizeof(UnsignedVerbAndProcessor)))
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{
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face->setInterestFilter("/localhost/nfd/faces",
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bind(&FaceManager::onFaceRequest, this, _2));
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m_faceTable.onAdd += bind(&FaceManager::onAddFace, this, _1);
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m_faceTable.onRemove += bind(&FaceManager::onRemoveFace, this, _1);
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}
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FaceManager::~FaceManager()
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{
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}
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void
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FaceManager::setConfigFile(ConfigFile& configFile)
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{
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configFile.addSectionHandler("face_system",
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bind(&FaceManager::onConfig, this, _1, _2, _3));
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}
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void
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FaceManager::onConfig(const ConfigSection& configSection,
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bool isDryRun,
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const std::string& filename)
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{
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bool hasSeenUnix = false;
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bool hasSeenTcp = false;
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bool hasSeenUdp = false;
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bool hasSeenEther = false;
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const std::list<shared_ptr<NetworkInterfaceInfo> > nicList(listNetworkInterfaces());
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for (ConfigSection::const_iterator item = configSection.begin();
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item != configSection.end();
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++item)
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{
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if (item->first == "unix")
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{
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if (hasSeenUnix)
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throw Error("Duplicate \"unix\" section");
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hasSeenUnix = true;
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processSectionUnix(item->second, isDryRun);
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}
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else if (item->first == "tcp")
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{
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if (hasSeenTcp)
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throw Error("Duplicate \"tcp\" section");
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hasSeenTcp = true;
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processSectionTcp(item->second, isDryRun);
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}
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else if (item->first == "udp")
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{
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if (hasSeenUdp)
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throw Error("Duplicate \"udp\" section");
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hasSeenUdp = true;
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processSectionUdp(item->second, isDryRun, nicList);
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}
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else if (item->first == "ether")
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{
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if (hasSeenEther)
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throw Error("Duplicate \"ether\" section");
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hasSeenEther = true;
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processSectionEther(item->second, isDryRun, nicList);
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}
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else
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{
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throw Error("Unrecognized option \"" + item->first + "\"");
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}
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}
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}
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void
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FaceManager::processSectionUnix(const ConfigSection& configSection, bool isDryRun)
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{
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// ; the unix section contains settings of UNIX stream faces and channels
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// unix
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// {
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// listen yes ; set to 'no' to disable UNIX stream listener, default 'yes'
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// path /var/run/nfd.sock ; UNIX stream listener path
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// }
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#if defined(HAVE_UNIX_SOCKETS)
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bool needToListen = true;
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std::string path = "/var/run/nfd.sock";
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for (ConfigSection::const_iterator i = configSection.begin();
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i != configSection.end();
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++i)
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{
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if (i->first == "path")
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{
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path = i->second.get_value<std::string>();
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}
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else if (i->first == "listen")
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{
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needToListen = parseYesNo(i, i->first, "unix");
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}
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else
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{
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throw ConfigFile::Error("Unrecognized option \"" + i->first + "\" in \"unix\" section");
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}
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}
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if (!isDryRun)
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{
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shared_ptr<UnixStreamFactory> factory = make_shared<UnixStreamFactory>();
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shared_ptr<UnixStreamChannel> unixChannel = factory->createChannel(path);
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if (needToListen)
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{
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// Should acceptFailed callback be used somehow?
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unixChannel->listen(bind(&FaceTable::add, &m_faceTable, _1),
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UnixStreamChannel::ConnectFailedCallback());
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}
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m_factories.insert(std::make_pair("unix", factory));
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}
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#else
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throw ConfigFile::Error("NFD was compiled without UNIX sockets support, cannot process \"unix\" section");
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#endif // HAVE_UNIX_SOCKETS
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}
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void
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FaceManager::processSectionTcp(const ConfigSection& configSection, bool isDryRun)
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{
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// ; the tcp section contains settings of TCP faces and channels
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// tcp
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// {
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// listen yes ; set to 'no' to disable TCP listener, default 'yes'
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// port 6363 ; TCP listener port number
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// }
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std::string port = "6363";
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bool needToListen = true;
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for (ConfigSection::const_iterator i = configSection.begin();
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i != configSection.end();
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++i)
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{
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if (i->first == "port")
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{
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port = i->second.get_value<std::string>();
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}
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else if (i->first == "listen")
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{
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needToListen = parseYesNo(i, i->first, "tcp");
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}
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else
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{
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throw ConfigFile::Error("Unrecognized option \"" + i->first + "\" in \"tcp\" section");
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}
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}
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if (!isDryRun)
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{
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shared_ptr<TcpFactory> factory = make_shared<TcpFactory>(boost::cref(port));
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using namespace boost::asio::ip;
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shared_ptr<TcpChannel> ipv4Channel = factory->createChannel("0.0.0.0", port);
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shared_ptr<TcpChannel> ipv6Channel = factory->createChannel("::", port);
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if (needToListen)
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{
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// Should acceptFailed callback be used somehow?
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ipv4Channel->listen(bind(&FaceTable::add, &m_faceTable, _1),
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TcpChannel::ConnectFailedCallback());
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ipv6Channel->listen(bind(&FaceTable::add, &m_faceTable, _1),
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TcpChannel::ConnectFailedCallback());
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}
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m_factories.insert(std::make_pair("tcp", factory));
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m_factories.insert(std::make_pair("tcp4", factory));
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m_factories.insert(std::make_pair("tcp6", factory));
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}
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}
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void
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FaceManager::processSectionUdp(const ConfigSection& configSection,
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bool isDryRun,
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const std::list<shared_ptr<NetworkInterfaceInfo> >& nicList)
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{
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// ; the udp section contains settings of UDP faces and channels
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// udp
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// {
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// port 6363 ; UDP unicast port number
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// idle_timeout 30 ; idle time (seconds) before closing a UDP unicast face
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// keep_alive_interval 25; interval (seconds) between keep-alive refreshes
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// ; NFD creates one UDP multicast face per NIC
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// mcast yes ; set to 'no' to disable UDP multicast, default 'yes'
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// mcast_port 56363 ; UDP multicast port number
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// mcast_group 224.0.23.170 ; UDP multicast group (IPv4 only)
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// }
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std::string port = "6363";
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size_t timeout = 30;
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size_t keepAliveInterval = 25;
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bool useMcast = true;
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std::string mcastGroup = "224.0.23.170";
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std::string mcastPort = "56363";
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for (ConfigSection::const_iterator i = configSection.begin();
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i != configSection.end();
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++i)
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{
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if (i->first == "port")
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{
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port = i->second.get_value<std::string>();
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}
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else if (i->first == "idle_timeout")
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{
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try
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{
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timeout = i->second.get_value<size_t>();
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}
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catch (const std::exception& e)
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{
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throw ConfigFile::Error("Invalid value for option \"" +
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i->first + "\" in \"udp\" section");
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}
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}
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else if (i->first == "keep_alive_interval")
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{
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try
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{
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keepAliveInterval = i->second.get_value<size_t>();
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}
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catch (const std::exception& e)
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{
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throw ConfigFile::Error("Invalid value for option \"" +
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i->first + "\" in \"udp\" section");
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}
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}
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else if (i->first == "mcast")
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{
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useMcast = parseYesNo(i, i->first, "udp");
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}
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else if (i->first == "mcast_port")
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{
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mcastPort = i->second.get_value<std::string>();
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}
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else if (i->first == "mcast_group")
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{
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using namespace boost::asio::ip;
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mcastGroup = i->second.get_value<std::string>();
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try
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{
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address mcastGroupTest = address::from_string(mcastGroup);
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if (!mcastGroupTest.is_v4())
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{
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throw ConfigFile::Error("Invalid value for option \"" +
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i->first + "\" in \"udp\" section");
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}
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}
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catch(const std::runtime_error& e)
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{
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throw ConfigFile::Error("Invalid value for option \"" +
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i->first + "\" in \"udp\" section");
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}
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}
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else
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{
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throw ConfigFile::Error("Unrecognized option \"" + i->first + "\" in \"udp\" section");
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}
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}
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/// \todo what is keep alive interval used for?
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if (!isDryRun)
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{
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shared_ptr<UdpFactory> factory = make_shared<UdpFactory>(boost::cref(port));
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factory->createChannel("::", port, time::seconds(timeout));
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m_factories.insert(std::make_pair("udp", factory));
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m_factories.insert(std::make_pair("udp4", factory));
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m_factories.insert(std::make_pair("udp6", factory));
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if (useMcast)
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{
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bool useEndpoint = false;
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udp::Endpoint localEndpoint;
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try
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{
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localEndpoint.port(boost::lexical_cast<uint16_t>(port));
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useEndpoint = true;
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}
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catch (const boost::bad_lexical_cast& error)
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{
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NFD_LOG_DEBUG("Treating UDP port \"" << port << "\" as a service name");
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}
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for (std::list<shared_ptr<NetworkInterfaceInfo> >::const_iterator i = nicList.begin();
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i != nicList.end();
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++i)
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{
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const shared_ptr<NetworkInterfaceInfo>& nic = *i;
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if (nic->isUp() && nic->isMulticastCapable() && !nic->ipv4Addresses.empty())
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{
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shared_ptr<MulticastUdpFace> newFace =
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factory->createMulticastFace(nic->ipv4Addresses[0].to_string(),
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mcastGroup, mcastPort);
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NFD_LOG_INFO("Created multicast Face ID " << newFace->getId());
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if (useEndpoint)
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{
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for (std::vector<boost::asio::ip::address_v4>::const_iterator j =
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nic->ipv4Addresses.begin();
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j != nic->ipv4Addresses.end();
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++j)
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{
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localEndpoint.address(*j);
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factory->createChannel(localEndpoint, time::seconds(timeout));
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}
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}
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else
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{
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for (std::vector<boost::asio::ip::address_v4>::const_iterator j =
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nic->ipv4Addresses.begin();
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j != nic->ipv4Addresses.end();
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++j)
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{
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factory->createChannel(j->to_string(), port, time::seconds(timeout));
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}
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}
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}
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}
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}
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else
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{
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factory->createChannel("0.0.0.0", port, time::seconds(timeout));
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}
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}
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}
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void
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FaceManager::processSectionEther(const ConfigSection& configSection,
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bool isDryRun,
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const std::list<shared_ptr<NetworkInterfaceInfo> >& nicList)
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{
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// ; the ether section contains settings of Ethernet faces and channels
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// ether
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// {
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// ; NFD creates one Ethernet multicast face per NIC
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// mcast yes ; set to 'no' to disable Ethernet multicast, default 'yes'
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// mcast_group 01:00:5E:00:17:AA ; Ethernet multicast group
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// }
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#if defined(HAVE_PCAP)
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using ethernet::Address;
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bool useMcast = true;
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Address mcastGroup(ethernet::getDefaultMulticastAddress());
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for (ConfigSection::const_iterator i = configSection.begin();
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i != configSection.end();
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++i)
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{
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if (i->first == "mcast")
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{
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useMcast = parseYesNo(i, i->first, "ether");
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}
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else if (i->first == "mcast_group")
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{
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mcastGroup = Address::fromString(i->second.get_value<std::string>());
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if (mcastGroup.isNull())
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{
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throw ConfigFile::Error("Invalid value for option \"" +
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i->first + "\" in \"ether\" section");
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}
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}
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else
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{
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throw ConfigFile::Error("Unrecognized option \"" + i->first + "\" in \"ether\" section");
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}
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}
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if (!isDryRun)
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{
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shared_ptr<EthernetFactory> factory = make_shared<EthernetFactory>();
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m_factories.insert(std::make_pair("ether", factory));
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if (useMcast)
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{
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for (std::list<shared_ptr<NetworkInterfaceInfo> >::const_iterator i = nicList.begin();
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i != nicList.end();
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++i)
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{
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const shared_ptr<NetworkInterfaceInfo>& nic = *i;
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if (nic->isUp() && nic->isMulticastCapable())
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{
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try
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{
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shared_ptr<EthernetFace> newFace =
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factory->createMulticastFace(nic->name, mcastGroup);
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NFD_LOG_INFO("Created multicast Face ID " << newFace->getId());
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}
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catch (const EthernetFactory::Error& factoryError)
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{
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NFD_LOG_ERROR(factoryError.what() << ", continuing");
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}
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catch (const EthernetFace::Error& faceError)
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{
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NFD_LOG_ERROR(faceError.what() << ", continuing");
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}
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}
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}
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}
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}
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#else
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throw ConfigFile::Error("NFD was compiled without libpcap, cannot process \"ether\" section");
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#endif // HAVE_PCAP
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}
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void
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FaceManager::onFaceRequest(const Interest& request)
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{
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const Name& command = request.getName();
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const size_t commandNComps = command.size();
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const Name::Component& verb = command.get(COMMAND_PREFIX.size());
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UnsignedVerbDispatchTable::const_iterator unsignedVerbProcessor = m_unsignedVerbDispatch.find(verb);
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if (unsignedVerbProcessor != m_unsignedVerbDispatch.end())
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{
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NFD_LOG_INFO("command result: processing verb: " << verb);
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(unsignedVerbProcessor->second)(this, boost::cref(request));
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}
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else if (COMMAND_UNSIGNED_NCOMPS <= commandNComps &&
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commandNComps < COMMAND_SIGNED_NCOMPS)
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{
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NFD_LOG_INFO("command result: unsigned verb: " << command);
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sendResponse(command, 401, "Signature required");
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}
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else if (commandNComps < COMMAND_SIGNED_NCOMPS ||
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!COMMAND_PREFIX.isPrefixOf(command))
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{
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NFD_LOG_INFO("command result: malformed");
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sendResponse(command, 400, "Malformed command");
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}
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else
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{
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validate(request,
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|
bind(&FaceManager::onValidatedFaceRequest, this, _1),
|
|
bind(&ManagerBase::onCommandValidationFailed, this, _1, _2));
|
|
}
|
|
}
|
|
|
|
void
|
|
FaceManager::onValidatedFaceRequest(const shared_ptr<const Interest>& request)
|
|
{
|
|
const Name& command = request->getName();
|
|
const Name::Component& verb = command.get(COMMAND_PREFIX.size());
|
|
|
|
SignedVerbDispatchTable::const_iterator signedVerbProcessor = m_signedVerbDispatch.find(verb);
|
|
if (signedVerbProcessor != m_signedVerbDispatch.end())
|
|
{
|
|
ndn::nfd::FaceManagementOptions options;
|
|
if (!extractOptions(*request, options))
|
|
{
|
|
sendResponse(command, 400, "Malformed command");
|
|
return;
|
|
}
|
|
|
|
NFD_LOG_INFO("command result: processing verb: " << verb);
|
|
(signedVerbProcessor->second)(this, command, options);
|
|
}
|
|
else
|
|
{
|
|
NFD_LOG_INFO("command result: unsupported verb: " << verb);
|
|
sendResponse(command, 501, "Unsupported command");
|
|
}
|
|
|
|
}
|
|
|
|
bool
|
|
FaceManager::extractOptions(const Interest& request,
|
|
ndn::nfd::FaceManagementOptions& extractedOptions)
|
|
{
|
|
const Name& command = request.getName();
|
|
const size_t optionCompIndex =
|
|
COMMAND_PREFIX.size() + 1;
|
|
|
|
try
|
|
{
|
|
Block rawOptions = request.getName()[optionCompIndex].blockFromValue();
|
|
extractedOptions.wireDecode(rawOptions);
|
|
}
|
|
catch (const ndn::Tlv::Error& e)
|
|
{
|
|
NFD_LOG_INFO("Bad command option parse: " << command);
|
|
return false;
|
|
}
|
|
NFD_LOG_DEBUG("Options parsed OK");
|
|
return true;
|
|
}
|
|
|
|
void
|
|
FaceManager::onCreated(const Name& requestName,
|
|
ndn::nfd::FaceManagementOptions& options,
|
|
const shared_ptr<Face>& newFace)
|
|
{
|
|
m_faceTable.add(newFace);
|
|
options.setFaceId(newFace->getId());
|
|
|
|
NFD_LOG_INFO("Created Face ID " << newFace->getId());
|
|
|
|
ndn::nfd::ControlResponse response;
|
|
setResponse(response, 200, "Success", options.wireEncode());
|
|
sendResponse(requestName, response);
|
|
}
|
|
|
|
void
|
|
FaceManager::onConnectFailed(const Name& requestName, const std::string& reason)
|
|
{
|
|
NFD_LOG_INFO("Failed to create face: " << reason);
|
|
sendResponse(requestName, 400, "Failed to create face");
|
|
}
|
|
|
|
void
|
|
FaceManager::createFace(const Name& requestName,
|
|
ndn::nfd::FaceManagementOptions& options)
|
|
{
|
|
FaceUri uri;
|
|
if (!uri.parse(options.getUri()))
|
|
{
|
|
sendResponse(requestName, 400, "Malformed command");
|
|
return;
|
|
}
|
|
|
|
FactoryMap::iterator factory = m_factories.find(uri.getScheme());
|
|
if (factory == m_factories.end())
|
|
{
|
|
sendResponse(requestName, 501, "Unsupported protocol");
|
|
return;
|
|
}
|
|
|
|
factory->second->createFace(uri,
|
|
bind(&FaceManager::onCreated, this, requestName, options, _1),
|
|
bind(&FaceManager::onConnectFailed, this, requestName, _1));
|
|
}
|
|
|
|
|
|
void
|
|
FaceManager::destroyFace(const Name& requestName,
|
|
ndn::nfd::FaceManagementOptions& options)
|
|
{
|
|
shared_ptr<Face> target = m_faceTable.get(options.getFaceId());
|
|
if (static_cast<bool>(target))
|
|
{
|
|
target->close();
|
|
}
|
|
sendResponse(requestName, 200, "Success");
|
|
}
|
|
|
|
void
|
|
FaceManager::onAddFace(shared_ptr<Face> face)
|
|
{
|
|
ndn::nfd::FaceEventNotification faceCreated(ndn::nfd::FACE_EVENT_CREATED,
|
|
face->getId(),
|
|
face->getUri().toString());
|
|
|
|
m_notificationStream.postNotification(faceCreated);
|
|
}
|
|
|
|
void
|
|
FaceManager::onRemoveFace(shared_ptr<Face> face)
|
|
{
|
|
ndn::nfd::FaceEventNotification faceDestroyed(ndn::nfd::FACE_EVENT_DESTROYED,
|
|
face->getId(),
|
|
face->getUri().toString());
|
|
|
|
m_notificationStream.postNotification(faceDestroyed);
|
|
}
|
|
|
|
|
|
void
|
|
FaceManager::listFaces(const Interest& request)
|
|
{
|
|
const Name& command = request.getName();
|
|
const size_t commandNComps = command.size();
|
|
|
|
if (commandNComps < LIST_COMMAND_NCOMPS ||
|
|
!LIST_COMMAND_PREFIX.isPrefixOf(command))
|
|
{
|
|
NFD_LOG_INFO("command result: malformed");
|
|
sendResponse(command, 400, "Malformed command");
|
|
return;
|
|
}
|
|
|
|
m_statusPublisher.publish();
|
|
}
|
|
|
|
} // namespace nfd
|