mirror of https://github.com/Icinga/icinga2.git
582 lines
16 KiB
C++
582 lines
16 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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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 "config/configcompilercontext.h"
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#include "config/configcompiler.h"
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#include "config/configitembuilder.h"
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#include "base/application.h"
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#include "base/logger.h"
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#include "base/timer.h"
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#include "base/utility.h"
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#include "base/exception.h"
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#include "base/convert.h"
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#include "base/scriptvariable.h"
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#include "base/context.h"
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#include "config.h"
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#include <boost/program_options.hpp>
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#include <boost/tuple/tuple.hpp>
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#include <boost/foreach.hpp>
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#ifndef _WIN32
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# include <sys/types.h>
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# include <pwd.h>
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# include <grp.h>
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#endif /* _WIN32 */
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using namespace icinga;
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namespace po = boost::program_options;
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static po::variables_map g_AppParams;
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static String LoadAppType(const String& typeSpec)
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{
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int index;
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Log(LogInformation, "icinga-app", "Loading application type: " + typeSpec);
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index = typeSpec.FindFirstOf('/');
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if (index == String::NPos)
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return typeSpec;
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String library = typeSpec.SubStr(0, index);
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(void) Utility::LoadExtensionLibrary(library);
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return typeSpec.SubStr(index + 1);
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}
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static bool LoadConfigFiles(const String& appType, ValidationType validate)
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{
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ConfigCompilerContext::GetInstance()->Reset();
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if (g_AppParams.count("config") > 0) {
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BOOST_FOREACH(const String& configPath, g_AppParams["config"].as<std::vector<std::string> >()) {
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ConfigCompiler::CompileFile(configPath);
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}
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}
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String name, fragment;
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BOOST_FOREACH(boost::tie(name, fragment), ConfigFragmentRegistry::GetInstance()->GetItems()) {
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ConfigCompiler::CompileText(name, fragment);
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}
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ConfigItemBuilder::Ptr builder = make_shared<ConfigItemBuilder>();
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builder->SetType(appType);
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builder->SetName("application");
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ConfigItem::Ptr item = builder->Compile();
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item->Register();
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bool result = ConfigItem::ActivateItems(validate);
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int warnings = 0, errors = 0;
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BOOST_FOREACH(const ConfigCompilerMessage& message, ConfigCompilerContext::GetInstance()->GetMessages()) {
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std::ostringstream locbuf;
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ShowCodeFragment(locbuf, message.Location, true);
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String location = locbuf.str();
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String logmsg;
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if (!location.IsEmpty())
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logmsg = "Location:\n" + location;
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logmsg += String("\nConfig ") + (message.Error ? "error" : "warning") + ": " + message.Text;
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if (message.Error) {
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Log(LogCritical, "config", logmsg);
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errors++;
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} else {
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Log(LogWarning, "config", logmsg);
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warnings++;
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}
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}
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if (warnings > 0 || errors > 0) {
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LogSeverity severity;
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if (errors == 0)
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severity = LogWarning;
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else
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severity = LogCritical;
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Log(severity, "config", Convert::ToString(errors) + " errors, " + Convert::ToString(warnings) + " warnings.");
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}
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if (!result)
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return false;
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return true;
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}
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#ifndef _WIN32
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static void SigHupHandler(int)
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{
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Application::RequestRestart();
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}
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#endif /* _WIN32 */
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static bool Daemonize(const String& stderrFile)
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{
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#ifndef _WIN32
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pid_t pid = fork();
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if (pid == -1) {
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return false;
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}
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if (pid)
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exit(0);
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int fdnull = open("/dev/null", O_RDWR);
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if (fdnull > 0) {
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if (fdnull != 0)
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dup2(fdnull, 0);
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if (fdnull != 1)
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dup2(fdnull, 1);
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if (fdnull > 2)
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close(fdnull);
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}
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const char *errPath = "/dev/null";
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if (!stderrFile.IsEmpty())
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errPath = stderrFile.CStr();
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int fderr = open(errPath, O_WRONLY | O_APPEND);
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if (fderr < 0 && errno == ENOENT)
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fderr = open(errPath, O_CREAT | O_WRONLY | O_APPEND, 0600);
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if (fderr > 0) {
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if (fderr != 2)
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dup2(fderr, 2);
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if (fderr > 2)
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close(fderr);
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}
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pid_t sid = setsid();
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if (sid == -1) {
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return false;
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}
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#endif
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return true;
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}
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int Main(void)
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{
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int argc = Application::GetArgC();
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char **argv = Application::GetArgV();
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Application::SetStartTime(Utility::GetTime());
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Application::SetResourceLimits();
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/* Set thread title. */
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Utility::SetThreadName("Main Thread", false);
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/* Install exception handlers to make debugging easier. */
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Application::InstallExceptionHandlers();
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Application::DeclarePrefixDir(ICINGA_PREFIX);
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Application::DeclareSysconfDir(ICINGA_SYSCONFDIR);
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Application::DeclareLocalStateDir(ICINGA_LOCALSTATEDIR);
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Application::DeclarePkgDataDir(ICINGA_PKGDATADIR);
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Application::DeclareApplicationType("icinga/IcingaApplication");
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po::options_description desc("Supported options");
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desc.add_options()
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("help", "show this help message")
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("version,V", "show version information")
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("library,l", po::value<std::vector<std::string> >(), "load a library")
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("include,I", po::value<std::vector<std::string> >(), "add include search directory")
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("define,D", po::value<std::vector<std::string> >(), "define a constant")
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("config,c", po::value<std::vector<std::string> >(), "parse a configuration file")
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("no-config,z", "start without a configuration file")
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("validate,C", "exit after validating the configuration")
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("no-validate,Z", "skip validating the configuration")
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("debug,x", "enable debugging")
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("errorlog,e", po::value<std::string>(), "log fatal errors to the specified log file (only works in combination with --daemonize)")
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#ifndef _WIN32
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("daemonize,d", "detach from the controlling terminal")
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("user,u", po::value<std::string>(), "user to run Icinga as")
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("group,g", po::value<std::string>(), "group to run Icinga as")
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#else /* _WIN32 */
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("scm", "run as a Windows service (must be the first argument if specified)")
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("scm-install", "installs Icinga 2 as a Windows service (must be the first argument if specified")
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("scm-uninstall", "uninstalls the Icinga 2 Windows service (must be the first argument if specified")
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#endif /* _WIN32 */
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;
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try {
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po::store(po::parse_command_line(argc, argv, desc), g_AppParams);
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} catch (const std::exception& ex) {
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std::ostringstream msgbuf;
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msgbuf << "Error while parsing command-line options: " << ex.what();
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Log(LogCritical, "icinga-app", msgbuf.str());
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return EXIT_FAILURE;
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}
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po::notify(g_AppParams);
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if (g_AppParams.count("define")) {
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BOOST_FOREACH(const String& define, g_AppParams["define"].as<std::vector<std::string> >()) {
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String key, value;
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size_t pos = define.FindFirstOf('=');
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if (pos != String::NPos) {
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key = define.SubStr(0, pos);
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value = define.SubStr(pos + 1);
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} else {
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key = define;
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value = "1";
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}
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ScriptVariable::Set(key, value);
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}
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}
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Application::DeclareStatePath(Application::GetLocalStateDir() + "/lib/icinga2/icinga2.state");
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Application::DeclarePidPath(Application::GetLocalStateDir() + "/run/icinga2/icinga2.pid");
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#ifndef _WIN32
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if (g_AppParams.count("group")) {
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String group = g_AppParams["group"].as<std::string>();
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errno = 0;
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struct group *gr = getgrnam(group.CStr());
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if (!gr) {
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if (errno == 0) {
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BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid group specified: " + group));
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} else {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("getgrnam")
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<< boost::errinfo_errno(errno));
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}
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}
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if (setgid(gr->gr_gid) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("setgid")
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<< boost::errinfo_errno(errno));
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}
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}
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if (g_AppParams.count("user")) {
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String user = g_AppParams["user"].as<std::string>();
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errno = 0;
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struct passwd *pw = getpwnam(user.CStr());
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if (!pw) {
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if (errno == 0) {
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BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid user specified: " + user));
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} else {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("getpwnam")
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<< boost::errinfo_errno(errno));
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}
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}
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if (setuid(pw->pw_uid) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("setuid")
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<< boost::errinfo_errno(errno));
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}
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}
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#endif /* _WIN32 */
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if (g_AppParams.count("debug"))
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Application::SetDebugging(true);
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if (g_AppParams.count("help") || g_AppParams.count("version")) {
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String appName = Utility::BaseName(argv[0]);
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if (appName.GetLength() > 3 && appName.SubStr(0, 3) == "lt-")
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appName = appName.SubStr(3, appName.GetLength() - 3);
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std::cout << appName << " " << "- The Icinga 2 network monitoring daemon.";
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if (g_AppParams.count("version")) {
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std::cout << " (Version: " << Application::GetVersion() << ")";
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std::cout << std::endl
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<< "Copyright (c) 2012-2014 Icinga Development Team (http://www.icinga.org)" << std::endl
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<< "License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl2.html>" << std::endl
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<< "This is free software: you are free to change and redistribute it." << std::endl
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<< "There is NO WARRANTY, to the extent permitted by law.";
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}
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std::cout << std::endl;
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if (g_AppParams.count("version"))
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return EXIT_SUCCESS;
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}
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if (g_AppParams.count("help")) {
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std::cout << std::endl
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<< desc << std::endl
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<< "Report bugs at <https://dev.icinga.org/>" << std::endl
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<< "Icinga home page: <http://www.icinga.org/>" << std::endl;
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return EXIT_SUCCESS;
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}
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ScriptVariable::Set("UseVfork", true, false, true);
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Application::MakeVariablesConstant();
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Log(LogInformation, "icinga-app", "Icinga application loader (version: " + Application::GetVersion() + ")");
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String appType = LoadAppType(Application::GetApplicationType());
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if (g_AppParams.count("library")) {
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BOOST_FOREACH(const String& libraryName, g_AppParams["library"].as<std::vector<std::string> >()) {
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(void)Utility::LoadExtensionLibrary(libraryName);
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}
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}
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ConfigCompiler::AddIncludeSearchDir(Application::GetPkgDataDir());
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if (g_AppParams.count("include")) {
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BOOST_FOREACH(const String& includePath, g_AppParams["include"].as<std::vector<std::string> >()) {
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ConfigCompiler::AddIncludeSearchDir(includePath);
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}
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}
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if (g_AppParams.count("no-config") == 0 && g_AppParams.count("config") == 0) {
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Log(LogCritical, "icinga-app", "You need to specify at least one config file (using the --config option).");
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return EXIT_FAILURE;
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}
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if (g_AppParams.count("daemonize")) {
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String errorLog;
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if (g_AppParams.count("errorlog"))
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errorLog = g_AppParams["errorlog"].as<std::string>();
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Daemonize(errorLog);
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Logger::DisableConsoleLog();
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}
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ValidationType validate = ValidateStart;
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if (g_AppParams.count("validate"))
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validate = ValidateOnly;
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if (g_AppParams.count("no-validate"))
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validate = ValidateNone;
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if (!LoadConfigFiles(appType, validate))
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return EXIT_FAILURE;
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if (validate == ValidateOnly) {
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Log(LogInformation, "icinga-app", "Finished validating the configuration file(s).");
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return EXIT_SUCCESS;
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}
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#ifndef _WIN32
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = &SigHupHandler;
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sigaction(SIGHUP, &sa, NULL);
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#endif /* _WIN32 */
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int rc = Application::GetInstance()->Run();
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#ifndef _DEBUG
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_exit(rc); // Yay, our static destructors are pretty much beyond repair at this point.
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#endif /* _DEBUG */
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return rc;
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}
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static int SetupService(bool install, int argc, char **argv)
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{
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SC_HANDLE schSCManager;
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SC_HANDLE schService;
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TCHAR szPath[MAX_PATH * 5];
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if (!GetModuleFileName(NULL, szPath, MAX_PATH)) {
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printf("Cannot install service (%d)\n", GetLastError());
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return 1;
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}
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// Get a handle to the SCM database.
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schSCManager = OpenSCManager(
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NULL, // local computer
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NULL, // ServicesActive database
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SC_MANAGER_ALL_ACCESS); // full access rights
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if (NULL == schSCManager) {
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printf("OpenSCManager failed (%d)\n", GetLastError());
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return 1;
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}
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strcat(szPath, " --scm");
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for (int i = 0; i < argc; i++) {
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strcat(szPath, " \"");
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strcat(szPath, argv[i]);
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strcat(szPath, "\"");
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}
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schService = OpenService(schSCManager, "icinga2", DELETE);
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if (schService != NULL) {
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if (!DeleteService(schService)) {
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printf("DeleteService failed (%d)\n", GetLastError());
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CloseServiceHandle(schService);
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CloseServiceHandle(schSCManager);
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return 1;
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}
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if (!install)
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printf("Service uninstalled successfully\n");
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CloseServiceHandle(schService);
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}
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if (install) {
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schService = CreateService(
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schSCManager, // SCM database
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"icinga2", // name of service
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"Icinga 2", // service name to display
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SERVICE_ALL_ACCESS, // desired access
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SERVICE_WIN32_OWN_PROCESS, // service type
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SERVICE_DEMAND_START, // start type
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SERVICE_ERROR_NORMAL, // error control type
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szPath, // path to service's binary
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NULL, // no load ordering group
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NULL, // no tag identifier
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NULL, // no dependencies
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NULL, // LocalSystem account
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NULL); // no password
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if (schService == NULL) {
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printf("CreateService failed (%d)\n", GetLastError());
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CloseServiceHandle(schSCManager);
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return 1;
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} else
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printf("Service installed successfully\n");
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SERVICE_DESCRIPTION sdDescription = { "The Icinga 2 monitoring application" };
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ChangeServiceConfig2(schService, SERVICE_CONFIG_DESCRIPTION, &sdDescription);
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CloseServiceHandle(schService);
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}
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CloseServiceHandle(schSCManager);
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return 0;
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}
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|
#ifdef _WIN32
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|
SERVICE_STATUS l_SvcStatus;
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SERVICE_STATUS_HANDLE l_SvcStatusHandle;
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VOID ReportSvcStatus(DWORD dwCurrentState,
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DWORD dwWin32ExitCode,
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DWORD dwWaitHint)
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{
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static DWORD dwCheckPoint = 1;
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l_SvcStatus.dwCurrentState = dwCurrentState;
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l_SvcStatus.dwWin32ExitCode = dwWin32ExitCode;
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l_SvcStatus.dwWaitHint = dwWaitHint;
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if (dwCurrentState == SERVICE_START_PENDING)
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l_SvcStatus.dwControlsAccepted = 0;
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else
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l_SvcStatus.dwControlsAccepted = SERVICE_ACCEPT_STOP;
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if ((dwCurrentState == SERVICE_RUNNING) ||
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(dwCurrentState == SERVICE_STOPPED))
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l_SvcStatus.dwCheckPoint = 0;
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else
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l_SvcStatus.dwCheckPoint = dwCheckPoint++;
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SetServiceStatus(l_SvcStatusHandle, &l_SvcStatus);
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}
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|
VOID WINAPI ServiceControlHandler(DWORD dwCtrl)
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{
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if (dwCtrl == SERVICE_CONTROL_STOP) {
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ReportSvcStatus(SERVICE_STOP_PENDING, NO_ERROR, 0);
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Application::RequestShutdown();
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}
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}
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|
VOID WINAPI ServiceMain(DWORD argc, LPSTR *argv)
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|
{
|
|
l_SvcStatusHandle = RegisterServiceCtrlHandler(
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"icinga2",
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ServiceControlHandler);
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|
|
l_SvcStatus.dwServiceType = SERVICE_WIN32_OWN_PROCESS;
|
|
l_SvcStatus.dwServiceSpecificExitCode = 0;
|
|
|
|
ReportSvcStatus(SERVICE_RUNNING, NO_ERROR, 0);
|
|
|
|
int rc = Main();
|
|
|
|
ReportSvcStatus(SERVICE_STOPPED, NO_ERROR, rc);
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
/**
|
|
* Entry point for the Icinga application.
|
|
*
|
|
* @params argc Number of command line arguments.
|
|
* @params argv Command line arguments.
|
|
* @returns The application's exit status.
|
|
*/
|
|
int main(int argc, char **argv)
|
|
{
|
|
/* Set command-line arguments. */
|
|
Application::SetArgC(argc);
|
|
Application::SetArgV(argv);
|
|
|
|
#ifdef _WIN32
|
|
if (argc > 1 && strcmp(argv[1], "--scm-install") == 0) {
|
|
return SetupService(true, argc - 2, &argv[2]);
|
|
}
|
|
|
|
if (argc > 1 && strcmp(argv[1], "--scm-uninstall") == 0) {
|
|
return SetupService(false, argc - 2, &argv[2]);
|
|
}
|
|
|
|
if (argc > 1 && strcmp(argv[1], "--scm") == 0) {
|
|
SERVICE_TABLE_ENTRY dispatchTable[] = {
|
|
{ "icinga2", ServiceMain },
|
|
{ NULL, NULL }
|
|
};
|
|
|
|
StartServiceCtrlDispatcher(dispatchTable);
|
|
_exit(1);
|
|
}
|
|
#endif /* _WIN32 */
|
|
|
|
int rc = Main();
|
|
exit(rc);
|
|
}
|