mirror of https://github.com/Icinga/icinga2.git
147 lines
4.8 KiB
C++
147 lines
4.8 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 "compat/externalcommandlistener.hpp"
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#include "icinga/externalcommandprocessor.hpp"
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#include "base/dynamictype.hpp"
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#include "base/logger_fwd.hpp"
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#include "base/exception.hpp"
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#include "base/application.hpp"
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#include "base/statsfunction.hpp"
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using namespace icinga;
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REGISTER_TYPE(ExternalCommandListener);
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REGISTER_STATSFUNCTION(ExternalCommandListenerStats, &ExternalCommandListener::StatsFunc);
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Value ExternalCommandListener::StatsFunc(Dictionary::Ptr& status, Dictionary::Ptr&)
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{
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Dictionary::Ptr nodes = make_shared<Dictionary>();
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BOOST_FOREACH(const ExternalCommandListener::Ptr& externalcommandlistener, DynamicType::GetObjects<ExternalCommandListener>()) {
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nodes->Set(externalcommandlistener->GetName(), 1); //add more stats
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}
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status->Set("externalcommandlistener", nodes);
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return 0;
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}
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/**
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* Starts the component.
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*/
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void ExternalCommandListener::Start(void)
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{
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DynamicObject::Start();
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#ifndef _WIN32
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m_CommandThread = boost::thread(boost::bind(&ExternalCommandListener::CommandPipeThread, this, GetCommandPath()));
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m_CommandThread.detach();
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#endif /* _WIN32 */
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}
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#ifndef _WIN32
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void ExternalCommandListener::CommandPipeThread(const String& commandPath)
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{
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Utility::SetThreadName("Command Pipe");
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struct stat statbuf;
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bool fifo_ok = false;
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if (lstat(commandPath.CStr(), &statbuf) >= 0) {
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if (S_ISFIFO(statbuf.st_mode) && access(commandPath.CStr(), R_OK) >= 0) {
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fifo_ok = true;
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} else {
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if (unlink(commandPath.CStr()) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("unlink")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(commandPath));
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}
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}
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}
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mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP;
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if (!fifo_ok && mkfifo(commandPath.CStr(), S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("mkfifo")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(commandPath));
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}
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/* mkfifo() uses umask to mask off some bits, which means we need to chmod() the
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* fifo to get the right mask. */
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if (chmod(commandPath.CStr(), mode) < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("chmod")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(commandPath));
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}
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for (;;) {
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int fd;
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do {
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fd = open(commandPath.CStr(), O_RDONLY);
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} while (fd < 0 && errno == EINTR);
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if (fd < 0) {
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("open")
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<< boost::errinfo_errno(errno)
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<< boost::errinfo_file_name(commandPath));
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}
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FILE *fp = fdopen(fd, "r");
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if (fp == NULL) {
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(void) close(fd);
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BOOST_THROW_EXCEPTION(posix_error()
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<< boost::errinfo_api_function("fdopen")
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<< boost::errinfo_errno(errno));
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}
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char line[2048];
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while (fgets(line, sizeof(line), fp) != NULL) {
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// remove trailing new-line
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while (strlen(line) > 0 &&
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(line[strlen(line) - 1] == '\r' || line[strlen(line) - 1] == '\n'))
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line[strlen(line) - 1] = '\0';
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String command = line;
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try {
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Log(LogInformation, "compat", "Executing external command: " + command);
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ExternalCommandProcessor::Execute(command);
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} catch (const std::exception& ex) {
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std::ostringstream msgbuf;
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msgbuf << "External command failed: " << DiagnosticInformation(ex);
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Log(LogWarning, "compat", msgbuf.str());
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}
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}
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fclose(fp);
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}
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}
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#endif /* _WIN32 */
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