mirror of https://github.com/Icinga/icinga2.git
475 lines
16 KiB
C++
475 lines
16 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "cli/nodesetupcommand.hpp"
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#include "cli/nodeutility.hpp"
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#include "cli/featureutility.hpp"
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#include "cli/pkiutility.hpp"
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#include "cli/apisetuputility.hpp"
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#include "remote/apilistener.hpp"
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#include "base/logger.hpp"
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#include "base/console.hpp"
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#include "base/application.hpp"
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#include "base/tlsutility.hpp"
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#include "base/scriptglobal.hpp"
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#include "base/exception.hpp"
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#include <boost/algorithm/string/classification.hpp>
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#include <boost/algorithm/string/join.hpp>
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#include <boost/algorithm/string/replace.hpp>
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#include <boost/algorithm/string/split.hpp>
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#include <iostream>
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#include <fstream>
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#include <vector>
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using namespace icinga;
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namespace po = boost::program_options;
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REGISTER_CLICOMMAND("node/setup", NodeSetupCommand);
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String NodeSetupCommand::GetDescription(void) const
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{
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return "Sets up an Icinga 2 node.";
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}
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String NodeSetupCommand::GetShortDescription(void) const
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{
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return "set up node";
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}
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void NodeSetupCommand::InitParameters(boost::program_options::options_description& visibleDesc,
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boost::program_options::options_description& hiddenDesc) const
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{
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visibleDesc.add_options()
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("zone", po::value<std::string>(), "The name of the local zone")
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("master_host", po::value<std::string>(), "The name of the master host for auto-signing the csr; syntax: host[,port]")
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("endpoint", po::value<std::vector<std::string> >(), "Connect to remote endpoint; syntax: cn[,host,port]")
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("listen", po::value<std::string>(), "Listen on host,port")
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("ticket", po::value<std::string>(), "Generated ticket number for this request")
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("trustedcert", po::value<std::string>(), "Trusted master certificate file")
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("cn", po::value<std::string>(), "The certificate's common name")
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("accept-config", "Accept config from master")
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("accept-commands", "Accept commands from master")
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("master", "Use setup for a master instance");
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hiddenDesc.add_options()
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("master_zone", po::value<std::string>(), "The name of the master zone");
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}
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std::vector<String> NodeSetupCommand::GetArgumentSuggestions(const String& argument, const String& word) const
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{
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if (argument == "key" || argument == "cert" || argument == "trustedcert")
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return GetBashCompletionSuggestions("file", word);
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else if (argument == "host")
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return GetBashCompletionSuggestions("hostname", word);
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else if (argument == "port")
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return GetBashCompletionSuggestions("service", word);
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else
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return CLICommand::GetArgumentSuggestions(argument, word);
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}
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ImpersonationLevel NodeSetupCommand::GetImpersonationLevel(void) const
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{
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return ImpersonateRoot;
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}
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/**
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* The entry point for the "node setup" CLI command.
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*
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* @returns An exit status.
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*/
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int NodeSetupCommand::Run(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap) const
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{
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if (!ap.empty()) {
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Log(LogWarning, "cli")
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<< "Ignoring parameters: " << boost::algorithm::join(ap, " ");
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}
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if (vm.count("master"))
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return SetupMaster(vm, ap);
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else
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return SetupNode(vm, ap);
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}
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int NodeSetupCommand::SetupMaster(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap)
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{
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/* Ignore not required parameters */
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if (vm.count("ticket"))
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Log(LogWarning, "cli", "Master for Node setup: Ignoring --ticket");
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if (vm.count("endpoint"))
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Log(LogWarning, "cli", "Master for Node setup: Ignoring --endpoint");
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if (vm.count("trustedcert"))
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Log(LogWarning, "cli", "Master for Node setup: Ignoring --trustedcert");
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if (vm.count("accept-config"))
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Log(LogWarning, "cli", "Master for Node setup: Ignoring --accept-config");
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if (vm.count("accept-commands"))
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Log(LogWarning, "cli", "Master for Node setup: Ignoring --accept-commands");
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String cn = Utility::GetFQDN();
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if (vm.count("cn"))
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cn = vm["cn"].as<std::string>();
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/* check whether the user wants to generate a new certificate or not */
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String existing_path = ApiListener::GetPkiDir() + "/" + cn + ".crt";
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Log(LogInformation, "cli")
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<< "Checking for existing certificates for common name '" << cn << "'...";
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if (Utility::PathExists(existing_path)) {
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Log(LogWarning, "cli")
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<< "Certificate '" << existing_path << "' for CN '" << cn << "' already exists. Not generating new certificate.";
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} else {
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Log(LogInformation, "cli")
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<< "Certificates not yet generated. Running 'api setup' now.";
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ApiSetupUtility::SetupMasterCertificates(cn);
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}
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Log(LogInformation, "cli", "Generating master configuration for Icinga 2.");
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ApiSetupUtility::SetupMasterApiUser();
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if (!FeatureUtility::CheckFeatureEnabled("api")) {
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ApiSetupUtility::SetupMasterEnableApi();
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} else {
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Log(LogInformation, "cli")
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<< "'api' feature already enabled.\n";
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}
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/* write zones.conf and update with zone + endpoint information */
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Log(LogInformation, "cli", "Generating zone and object configuration.");
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NodeUtility::GenerateNodeMasterIcingaConfig();
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/* update the ApiListener config - SetupMaster() will always enable it */
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Log(LogInformation, "cli", "Updating the APIListener feature.");
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String apipath = FeatureUtility::GetFeaturesAvailablePath() + "/api.conf";
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NodeUtility::CreateBackupFile(apipath);
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std::fstream fp;
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String tempApiPath = Utility::CreateTempFile(apipath + ".XXXXXX", 0644, fp);
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fp << "/**\n"
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<< " * The API listener is used for distributed monitoring setups.\n"
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<< " */\n"
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<< "object ApiListener \"api\" {\n"
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<< " cert_path = LocalStateDir + \"/lib/icinga2/pki/\" + NodeName + \".crt\"\n"
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<< " key_path = LocalStateDir + \"/lib/icinga2/pki/\" + NodeName + \".key\"\n"
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<< " ca_path = LocalStateDir + \"/lib/icinga2/pki/ca.crt\"\n";
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if (vm.count("listen")) {
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std::vector<String> tokens;
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boost::algorithm::split(tokens, vm["listen"].as<std::string>(), boost::is_any_of(","));
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if (tokens.size() > 0)
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fp << " bind_host = \"" << tokens[0] << "\"\n";
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if (tokens.size() > 1)
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fp << " bind_port = " << tokens[1] << "\n";
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}
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fp << "\n"
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<< " ticket_salt = TicketSalt\n"
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<< "}\n";
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fp.close();
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#ifdef _WIN32
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_unlink(apipath.CStr());
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#endif /* _WIN32 */
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if (rename(tempApiPath.CStr(), apipath.CStr()) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("rename")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(tempApiPath));
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}
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/* update constants.conf with NodeName = CN + TicketSalt = random value */
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if (cn != Utility::GetFQDN()) {
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Log(LogWarning, "cli")
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<< "CN '" << cn << "' does not match the default FQDN '" << Utility::GetFQDN() << "'. Requires update for NodeName constant in constants.conf!";
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}
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Log(LogInformation, "cli", "Updating constants.conf.");
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NodeUtility::CreateBackupFile(Application::GetSysconfDir() + "/icinga2/constants.conf");
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NodeUtility::UpdateConstant("NodeName", cn);
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NodeUtility::UpdateConstant("ZoneName", cn);
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String salt = RandomString(16);
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NodeUtility::UpdateConstant("TicketSalt", salt);
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Log(LogInformation, "cli")
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<< "Edit the api feature config file '" << apipath << "' and set a secure 'ticket_salt' attribute.";
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/* tell the user to reload icinga2 */
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Log(LogInformation, "cli", "Make sure to restart Icinga 2.");
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return 0;
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}
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int NodeSetupCommand::SetupNode(const boost::program_options::variables_map& vm, const std::vector<std::string>& ap)
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{
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/* require ticket number (generated on master) and at least one endpoint */
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if (!vm.count("ticket")) {
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Log(LogCritical, "cli")
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<< "Please pass the ticket number generated on master\n"
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<< "(Hint: 'icinga2 pki ticket --cn " << Utility::GetFQDN() << "').";
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return 1;
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}
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if (!vm.count("endpoint")) {
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Log(LogCritical, "cli", "You need to specify at least one endpoint (--endpoint).");
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return 1;
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}
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if (!vm.count("zone")) {
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Log(LogCritical, "cli", "You need to specify the local zone (--zone).");
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return 1;
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}
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String ticket = vm["ticket"].as<std::string>();
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Log(LogInformation, "cli")
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<< "Verifying ticket '" << ticket << "'.";
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/* require master host information for auto-signing requests */
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if (!vm.count("master_host")) {
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Log(LogCritical, "cli", "Please pass the master host connection information for auto-signing using '--master_host <host>'");
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return 1;
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}
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std::vector<String> tokens;
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boost::algorithm::split(tokens, vm["master_host"].as<std::string>(), boost::is_any_of(","));
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String master_host;
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String master_port = "5665";
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if (tokens.size() == 1 || tokens.size() == 2)
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master_host = tokens[0];
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if (tokens.size() == 2)
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master_port = tokens[1];
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Log(LogInformation, "cli")
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<< "Verifying master host connection information: host '" << master_host << "', port '" << master_port << "'.";
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/* trusted cert must be passed (retrieved by the user with 'pki save-cert' before) */
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if (!vm.count("trustedcert")) {
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Log(LogCritical, "cli")
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<< "Please pass the trusted cert retrieved from the master\n"
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<< "(Hint: 'icinga2 pki save-cert --host <masterhost> --port <5665> --key local.key --cert local.crt --trustedcert master.crt').";
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return 1;
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}
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boost::shared_ptr<X509> trustedcert = GetX509Certificate(vm["trustedcert"].as<std::string>());
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Log(LogInformation, "cli")
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<< "Verifying trusted certificate file '" << vm["trustedcert"].as<std::string>() << "'.";
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/* retrieve CN and pass it (defaults to FQDN) */
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String cn = Utility::GetFQDN();
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if (vm.count("cn"))
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cn = vm["cn"].as<std::string>();
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Log(LogInformation, "cli")
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<< "Using the following CN (defaults to FQDN): '" << cn << "'.";
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/* pki request a signed certificate from the master */
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String pki_path = ApiListener::GetPkiDir();
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Utility::MkDirP(pki_path, 0700);
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String user = ScriptGlobal::Get("RunAsUser");
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String group = ScriptGlobal::Get("RunAsGroup");
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if (!Utility::SetFileOwnership(pki_path, user, group)) {
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Log(LogWarning, "cli")
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<< "Cannot set ownership for user '" << user << "' group '" << group << "' on file '" << pki_path << "'. Verify it yourself!";
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}
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String key = pki_path + "/" + cn + ".key";
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String cert = pki_path + "/" + cn + ".crt";
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String ca = pki_path + "/ca.crt";
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if (Utility::PathExists(key))
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NodeUtility::CreateBackupFile(key, true);
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if (Utility::PathExists(cert))
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NodeUtility::CreateBackupFile(cert);
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if (PkiUtility::NewCert(cn, key, String(), cert) != 0) {
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Log(LogCritical, "cli", "Failed to generate new self-signed certificate.");
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return 1;
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}
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/* fix permissions: root -> icinga daemon user */
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if (!Utility::SetFileOwnership(key, user, group)) {
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Log(LogWarning, "cli")
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<< "Cannot set ownership for user '" << user << "' group '" << group << "' on file '" << key << "'. Verify it yourself!";
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}
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Log(LogInformation, "cli", "Requesting a signed certificate from the master.");
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if (PkiUtility::RequestCertificate(master_host, master_port, key, cert, ca, trustedcert, ticket) != 0) {
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Log(LogCritical, "cli", "Failed to request certificate from Icinga 2 master.");
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return 1;
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}
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if (!Utility::SetFileOwnership(ca, user, group)) {
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Log(LogWarning, "cli")
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<< "Cannot set ownership for user '" << user << "' group '" << group << "' on file '" << ca << "'. Verify it yourself!";
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}
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/* fix permissions (again) when updating the signed certificate */
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if (!Utility::SetFileOwnership(cert, user, group)) {
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Log(LogWarning, "cli")
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<< "Cannot set ownership for user '" << user << "' group '" << group << "' on file '" << cert << "'. Verify it yourself!";
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}
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/* disable the notifications feature */
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Log(LogInformation, "cli", "Disabling the Notification feature.");
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std::vector<std::string> disable;
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disable.push_back("notification");
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FeatureUtility::DisableFeatures(disable);
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/* enable the ApiListener config */
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Log(LogInformation, "cli", "Updating the ApiListener feature.");
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std::vector<std::string> enable;
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enable.push_back("api");
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FeatureUtility::EnableFeatures(enable);
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String apipath = FeatureUtility::GetFeaturesAvailablePath() + "/api.conf";
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NodeUtility::CreateBackupFile(apipath);
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std::fstream fp;
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String tempApiPath = Utility::CreateTempFile(apipath + ".XXXXXX", 0644, fp);
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fp << "/**\n"
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<< " * The API listener is used for distributed monitoring setups.\n"
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<< " */\n"
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<< "object ApiListener \"api\" {\n"
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<< " cert_path = LocalStateDir + \"/lib/icinga2/pki/\" + NodeName + \".crt\"\n"
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<< " key_path = LocalStateDir + \"/lib/icinga2/pki/\" + NodeName + \".key\"\n"
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<< " ca_path = LocalStateDir + \"/lib/icinga2/pki/ca.crt\"\n";
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if (vm.count("listen")) {
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std::vector<String> tokens;
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boost::algorithm::split(tokens, vm["listen"].as<std::string>(), boost::is_any_of(","));
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if (tokens.size() > 0)
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fp << " bind_host = \"" << tokens[0] << "\"\n";
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if (tokens.size() > 1)
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fp << " bind_port = " << tokens[1] << "\n";
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}
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fp << "\n";
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if (vm.count("accept-config"))
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fp << " accept_config = true\n";
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else
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fp << " accept_config = false\n";
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if (vm.count("accept-commands"))
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fp << " accept_commands = true\n";
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else
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fp << " accept_commands = false\n";
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fp << "\n"
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<< "}\n";
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fp.close();
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#ifdef _WIN32
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_unlink(apipath.CStr());
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#endif /* _WIN32 */
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if (rename(tempApiPath.CStr(), apipath.CStr()) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("rename")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(tempApiPath));
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}
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/* generate local zones.conf with zone+endpoint */
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Log(LogInformation, "cli", "Generating zone and object configuration.");
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NodeUtility::GenerateNodeIcingaConfig(vm["endpoint"].as<std::vector<std::string> >());
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/* update constants.conf with NodeName = CN */
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if (cn != Utility::GetFQDN()) {
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Log(LogWarning, "cli")
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<< "CN '" << cn << "' does not match the default FQDN '" << Utility::GetFQDN() << "'. Requires update for NodeName constant in constants.conf!";
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}
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Log(LogInformation, "cli", "Updating constants.conf.");
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NodeUtility::CreateBackupFile(Application::GetSysconfDir() + "/icinga2/constants.conf");
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NodeUtility::UpdateConstant("NodeName", cn);
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NodeUtility::UpdateConstant("ZoneName", vm["zone"].as<std::string>());
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String ticketPath = ApiListener::GetPkiDir() + "/ticket";
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String tempTicketPath = Utility::CreateTempFile(ticketPath + ".XXXXXX", 0600, fp);
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if (!Utility::SetFileOwnership(tempTicketPath, user, group)) {
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Log(LogWarning, "cli")
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<< "Cannot set ownership for user '" << user
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<< "' group '" << group
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<< "' on file '" << tempTicketPath << "'. Verify it yourself!";
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}
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fp << ticket;
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fp.close();
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#ifdef _WIN32
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_unlink(ticketPath.CStr());
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#endif /* _WIN32 */
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if (rename(tempTicketPath.CStr(), ticketPath.CStr()) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("rename")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(tempTicketPath));
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}
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/* tell the user to reload icinga2 */
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Log(LogInformation, "cli", "Make sure to restart Icinga 2.");
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return 0;
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}
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