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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#include "cli/featureutility.hpp"
#include "base/logger.hpp"
#include "base/console.hpp"
#include "base/application.hpp"
#include "base/utility.hpp"
#include <boost/algorithm/string/join.hpp>
#include <boost/algorithm/string/replace.hpp>
#include <fstream>
#include <iostream>
using namespace icinga;
String FeatureUtility::GetFeaturesAvailablePath()
{
return Configuration::ConfigDir + "/features-available";
}
String FeatureUtility::GetFeaturesEnabledPath()
{
return Configuration::ConfigDir + "/features-enabled";
}
std::vector<String> FeatureUtility::GetFieldCompletionSuggestions(const String& word, bool enable)
{
std::vector<String> cache;
std::vector<String> suggestions;
GetFeatures(cache, enable);
std::sort(cache.begin(), cache.end());
for (const String& suggestion : cache) {
if (suggestion.Find(word) == 0)
suggestions.push_back(suggestion);
}
return suggestions;
}
int FeatureUtility::EnableFeatures(const std::vector<std::string>& features)
{
String features_available_dir = GetFeaturesAvailablePath();
String features_enabled_dir = GetFeaturesEnabledPath();
if (!Utility::PathExists(features_available_dir) ) {
Log(LogCritical, "cli")
<< "Cannot parse available features. Path '" << features_available_dir << "' does not exist.";
return 1;
}
if (!Utility::PathExists(features_enabled_dir) ) {
Log(LogCritical, "cli")
<< "Cannot enable features. Path '" << features_enabled_dir << "' does not exist.";
return 1;
}
std::vector<std::string> errors;
for (auto& feature : features) {
String source = features_available_dir + "/" + feature + ".conf";
if (!Utility::PathExists(source) ) {
Log(LogCritical, "cli")
<< "Cannot enable feature '" << feature << "'. Source file '" << source + "' does not exist.";
errors.push_back(feature);
continue;
}
String target = features_enabled_dir + "/" + feature + ".conf";
if (Utility::PathExists(target) ) {
Log(LogWarning, "cli")
<< "Feature '" << feature << "' already enabled.";
continue;
}
std::cout << "Enabling feature " << ConsoleColorTag(Console_ForegroundMagenta | Console_Bold) << feature
<< ConsoleColorTag(Console_Normal) << ". Make sure to restart Icinga 2 for these changes to take effect.\n";
#ifndef _WIN32
String relativeSource = "../features-available/" + feature + ".conf";
if (symlink(relativeSource.CStr(), target.CStr()) < 0) {
Log(LogCritical, "cli")
<< "Cannot enable feature '" << feature << "'. Linking source '" << relativeSource << "' to target file '" << target
<< "' failed with error code " << errno << ", \"" << Utility::FormatErrorNumber(errno) << "\".";
errors.push_back(feature);
continue;
}
#else /* _WIN32 */
std::ofstream fp;
fp.open(target.CStr());
fp << "include \"../features-available/" << feature << ".conf\"" << std::endl;
fp.close();
if (fp.fail()) {
Log(LogCritical, "cli")
<< "Cannot enable feature '" << feature << "'. Failed to open file '" << target << "'.";
errors.push_back(feature);
continue;
}
#endif /* _WIN32 */
}
if (!errors.empty()) {
Log(LogCritical, "cli")
<< "Cannot enable feature(s): " << boost::algorithm::join(errors, " ");
errors.clear();
return 1;
}
return 0;
}
int FeatureUtility::DisableFeatures(const std::vector<std::string>& features)
{
String features_enabled_dir = GetFeaturesEnabledPath();
if (!Utility::PathExists(features_enabled_dir) ) {
Log(LogCritical, "cli")
<< "Cannot disable features. Path '" << features_enabled_dir << "' does not exist.";
return 0;
}
std::vector<std::string> errors;
for (auto& feature : features) {
String target = features_enabled_dir + "/" + feature + ".conf";
if (!Utility::PathExists(target) ) {
Log(LogWarning, "cli")
<< "Feature '" << feature << "' already disabled.";
continue;
}
if (unlink(target.CStr()) < 0) {
Log(LogCritical, "cli")
<< "Cannot disable feature '" << feature << "'. Unlinking target file '" << target
<< "' failed with error code " << errno << ", \"" + Utility::FormatErrorNumber(errno) << "\".";
errors.push_back(feature);
continue;
}
std::cout << "Disabling feature " << ConsoleColorTag(Console_ForegroundMagenta | Console_Bold) << feature
<< ConsoleColorTag(Console_Normal) << ". Make sure to restart Icinga 2 for these changes to take effect.\n";
}
if (!errors.empty()) {
Log(LogCritical, "cli")
<< "Cannot disable feature(s): " << boost::algorithm::join(errors, " ");
errors.clear();
return 1;
}
return 0;
}
int FeatureUtility::ListFeatures(std::ostream& os)
{
std::vector<String> disabled_features;
std::vector<String> enabled_features;
if (!FeatureUtility::GetFeatures(disabled_features, true))
return 1;
os << ConsoleColorTag(Console_ForegroundRed | Console_Bold) << "Disabled features: " << ConsoleColorTag(Console_Normal)
<< boost::algorithm::join(disabled_features, " ") << "\n";
if (!FeatureUtility::GetFeatures(enabled_features, false))
return 1;
os << ConsoleColorTag(Console_ForegroundGreen | Console_Bold) << "Enabled features: " << ConsoleColorTag(Console_Normal)
<< boost::algorithm::join(enabled_features, " ") << "\n";
return 0;
}
bool FeatureUtility::GetFeatures(std::vector<String>& features, bool get_disabled)
{
/* request all disabled features */
if (get_disabled) {
/* disable = available-enabled */
String available_pattern = GetFeaturesAvailablePath() + "/*.conf";
std::vector<String> available;
Utility::Glob(available_pattern, [&available](const String& featureFile) { CollectFeatures(featureFile, available); }, GlobFile);
String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
std::vector<String> enabled;
Utility::Glob(enabled_pattern, [&enabled](const String& featureFile) { CollectFeatures(featureFile, enabled); }, GlobFile);
std::sort(available.begin(), available.end());
std::sort(enabled.begin(), enabled.end());
std::set_difference(
available.begin(), available.end(),
enabled.begin(), enabled.end(),
std::back_inserter(features)
);
} else {
/* all enabled features */
String enabled_pattern = GetFeaturesEnabledPath() + "/*.conf";
Utility::Glob(enabled_pattern, [&features](const String& featureFile) { CollectFeatures(featureFile, features); }, GlobFile);
}
return true;
}
bool FeatureUtility::CheckFeatureEnabled(const String& feature)
{
return CheckFeatureInternal(feature, false);
}
bool FeatureUtility::CheckFeatureDisabled(const String& feature)
{
return CheckFeatureInternal(feature, true);
}
bool FeatureUtility::CheckFeatureInternal(const String& feature, bool check_disabled)
{
std::vector<String> features;
if (!FeatureUtility::GetFeatures(features, check_disabled))
return false;
for (const String& check_feature : features) {
if (check_feature == feature)
return true;
}
return false;
}
void FeatureUtility::CollectFeatures(const String& feature_file, std::vector<String>& features)
{
String feature = Utility::BaseName(feature_file);
boost::algorithm::replace_all(feature, ".conf", "");
Log(LogDebug, "cli")
<< "Adding feature: " << feature;
features.push_back(feature);
}
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