mirror of https://github.com/Icinga/icinga2.git
261 lines
8.4 KiB
C++
261 lines
8.4 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2018 Icinga Development Team (https://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/featureutility.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/utility.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 <fstream>
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#include <iostream>
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using namespace icinga;
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String FeatureUtility::GetFeaturesAvailablePath()
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{
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return Configuration::ConfigDir + "/features-available";
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}
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String FeatureUtility::GetFeaturesEnabledPath()
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{
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return Configuration::ConfigDir + "/features-enabled";
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}
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std::vector<String> FeatureUtility::GetFieldCompletionSuggestions(const String& word, bool enable)
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{
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std::vector<String> cache;
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std::vector<String> suggestions;
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GetFeatures(cache, enable);
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std::sort(cache.begin(), cache.end());
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for (const String& suggestion : cache) {
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if (suggestion.Find(word) == 0)
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suggestions.push_back(suggestion);
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}
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return suggestions;
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}
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int FeatureUtility::EnableFeatures(const std::vector<std::string>& features)
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{
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String features_available_dir = GetFeaturesAvailablePath();
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String features_enabled_dir = GetFeaturesEnabledPath();
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if (!Utility::PathExists(features_available_dir) ) {
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Log(LogCritical, "cli")
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<< "Cannot parse available features. Path '" << features_available_dir << "' does not exist.";
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return 1;
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}
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if (!Utility::PathExists(features_enabled_dir) ) {
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Log(LogCritical, "cli")
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<< "Cannot enable features. Path '" << features_enabled_dir << "' does not exist.";
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return 1;
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}
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std::vector<std::string> errors;
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for (const String& feature : features) {
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String source = features_available_dir + "/" + feature + ".conf";
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if (!Utility::PathExists(source) ) {
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Log(LogCritical, "cli")
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<< "Cannot enable feature '" << feature << "'. Source file '" << source + "' does not exist.";
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errors.push_back(feature);
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continue;
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}
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String target = features_enabled_dir + "/" + feature + ".conf";
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if (Utility::PathExists(target) ) {
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Log(LogWarning, "cli")
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<< "Feature '" << feature << "' already enabled.";
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continue;
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}
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std::cout << "Enabling feature " << ConsoleColorTag(Console_ForegroundMagenta | Console_Bold) << feature
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<< ConsoleColorTag(Console_Normal) << ". Make sure to restart Icinga 2 for these changes to take effect.\n";
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#ifndef _WIN32
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String relativeSource = "../features-available/" + feature + ".conf";
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if (symlink(relativeSource.CStr(), target.CStr()) < 0) {
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Log(LogCritical, "cli")
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<< "Cannot enable feature '" << feature << "'. Linking source '" << relativeSource << "' to target file '" << target
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<< "' failed with error code " << errno << ", \"" << Utility::FormatErrorNumber(errno) << "\".";
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errors.push_back(feature);
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continue;
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}
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#else /* _WIN32 */
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std::ofstream fp;
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fp.open(target.CStr());
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fp << "include \"../features-available/" << feature << ".conf\"" << std::endl;
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fp.close();
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if (fp.fail()) {
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Log(LogCritical, "cli")
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<< "Cannot enable feature '" << feature << "'. Failed to open file '" << target << "'.";
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errors.push_back(feature);
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continue;
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}
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#endif /* _WIN32 */
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}
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if (!errors.empty()) {
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Log(LogCritical, "cli")
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<< "Cannot enable feature(s): " << boost::algorithm::join(errors, " ");
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errors.clear();
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return 1;
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}
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return 0;
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}
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int FeatureUtility::DisableFeatures(const std::vector<std::string>& features)
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{
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String features_enabled_dir = GetFeaturesEnabledPath();
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if (!Utility::PathExists(features_enabled_dir) ) {
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Log(LogCritical, "cli")
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<< "Cannot disable features. Path '" << features_enabled_dir << "' does not exist.";
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return 0;
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}
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std::vector<std::string> errors;
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for (const String& feature : features) {
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String target = features_enabled_dir + "/" + feature + ".conf";
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if (!Utility::PathExists(target) ) {
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Log(LogWarning, "cli")
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<< "Feature '" << feature << "' already disabled.";
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continue;
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}
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if (unlink(target.CStr()) < 0) {
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Log(LogCritical, "cli")
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<< "Cannot disable feature '" << feature << "'. Unlinking target file '" << target
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<< "' failed with error code " << errno << ", \"" + Utility::FormatErrorNumber(errno) << "\".";
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errors.push_back(feature);
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continue;
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}
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std::cout << "Disabling feature " << ConsoleColorTag(Console_ForegroundMagenta | Console_Bold) << feature
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<< ConsoleColorTag(Console_Normal) << ". Make sure to restart Icinga 2 for these changes to take effect.\n";
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}
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if (!errors.empty()) {
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Log(LogCritical, "cli")
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<< "Cannot disable feature(s): " << boost::algorithm::join(errors, " ");
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errors.clear();
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return 1;
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}
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return 0;
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}
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int FeatureUtility::ListFeatures(std::ostream& os)
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{
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std::vector<String> disabled_features;
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std::vector<String> enabled_features;
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if (!FeatureUtility::GetFeatures(disabled_features, true))
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return 1;
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os << ConsoleColorTag(Console_ForegroundRed | Console_Bold) << "Disabled features: " << ConsoleColorTag(Console_Normal)
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<< boost::algorithm::join(disabled_features, " ") << "\n";
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if (!FeatureUtility::GetFeatures(enabled_features, false))
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return 1;
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os << ConsoleColorTag(Console_ForegroundGreen | Console_Bold) << "Enabled features: " << ConsoleColorTag(Console_Normal)
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<< boost::algorithm::join(enabled_features, " ") << "\n";
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return 0;
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}
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bool FeatureUtility::GetFeatures(std::vector<String>& features, bool get_disabled)
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{
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/* request all disabled features */
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if (get_disabled) {
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/* disable = available-enabled */
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String available_pattern = GetFeaturesAvailablePath() + "/*.conf";
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std::vector<String> available;
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Utility::Glob(available_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(available)), GlobFile);
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String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
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std::vector<String> enabled;
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Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(enabled)), GlobFile);
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std::sort(available.begin(), available.end());
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std::sort(enabled.begin(), enabled.end());
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std::set_difference(
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available.begin(), available.end(),
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enabled.begin(), enabled.end(),
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std::back_inserter(features)
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);
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} else {
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/* all enabled features */
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String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
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Utility::Glob(enabled_pattern, std::bind(&FeatureUtility::CollectFeatures, _1, std::ref(features)), GlobFile);
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}
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return true;
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}
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bool FeatureUtility::CheckFeatureEnabled(const String& feature)
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{
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return CheckFeatureInternal(feature, false);
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}
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bool FeatureUtility::CheckFeatureDisabled(const String& feature)
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{
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return CheckFeatureInternal(feature, true);
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}
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bool FeatureUtility::CheckFeatureInternal(const String& feature, bool check_disabled)
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{
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std::vector<String> features;
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if (!FeatureUtility::GetFeatures(features, check_disabled))
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return false;
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for (const String& check_feature : features) {
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if (check_feature == feature)
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return true;
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}
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return false;
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}
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void FeatureUtility::CollectFeatures(const String& feature_file, std::vector<String>& features)
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{
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String feature = Utility::BaseName(feature_file);
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boost::algorithm::replace_all(feature, ".conf", "");
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Log(LogDebug, "cli")
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<< "Adding feature: " << feature;
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features.push_back(feature);
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}
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