icinga2/lib/remote/configobjectutility.cpp

244 lines
7.4 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2017 Icinga Development Team (https://www.icinga.com/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "remote/configobjectutility.hpp"
#include "remote/configpackageutility.hpp"
#include "remote/apilistener.hpp"
#include "config/configcompiler.hpp"
#include "config/configitem.hpp"
#include "base/configwriter.hpp"
#include "base/exception.hpp"
#include "base/serializer.hpp"
#include "base/dependencygraph.hpp"
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <boost/algorithm/string/case_conv.hpp>
using namespace icinga;
String ConfigObjectUtility::GetConfigDir(void)
{
return ConfigPackageUtility::GetPackageDir() + "/_api/" +
ConfigPackageUtility::GetActiveStage("_api");
}
String ConfigObjectUtility::GetObjectConfigPath(const Type::Ptr& type, const String& fullName)
{
String typeDir = type->GetPluralName();
boost::algorithm::to_lower(typeDir);
return GetConfigDir() + "/conf.d/" + typeDir +
"/" + EscapeName(fullName) + ".conf";
}
String ConfigObjectUtility::EscapeName(const String& name)
{
return Utility::EscapeString(name, "<>:\"/\\|?*", true);
}
String ConfigObjectUtility::CreateObjectConfig(const Type::Ptr& type, const String& fullName,
bool ignoreOnError, const Array::Ptr& templates, const Dictionary::Ptr& attrs)
{
NameComposer *nc = dynamic_cast<NameComposer *>(type.get());
Dictionary::Ptr nameParts;
String name;
if (nc) {
nameParts = nc->ParseName(fullName);
name = nameParts->Get("name");
} else
name = fullName;
Dictionary::Ptr allAttrs = new Dictionary();
if (attrs) {
attrs->CopyTo(allAttrs);
ObjectLock olock(attrs);
for (const Dictionary::Pair& kv : attrs) {
int fid = type->GetFieldId(kv.first.SubStr(0, kv.first.FindFirstOf(".")));
if (fid < 0)
BOOST_THROW_EXCEPTION(ScriptError("Invalid attribute specified: " + kv.first));
Field field = type->GetFieldInfo(fid);
if (!(field.Attributes & FAConfig) || kv.first == "name")
BOOST_THROW_EXCEPTION(ScriptError("Attribute is marked for internal use only and may not be set: " + kv.first));
}
}
if (nameParts)
nameParts->CopyTo(allAttrs);
allAttrs->Remove("name");
/* update the version for config sync */
allAttrs->Set("version", Utility::GetTime());
std::ostringstream config;
ConfigWriter::EmitConfigItem(config, type->GetName(), name, false, ignoreOnError, templates, allAttrs);
ConfigWriter::EmitRaw(config, "\n");
return config.str();
}
bool ConfigObjectUtility::CreateObject(const Type::Ptr& type, const String& fullName,
const String& config, const Array::Ptr& errors)
{
if (!ConfigPackageUtility::PackageExists("_api")) {
ConfigPackageUtility::CreatePackage("_api");
String stage = ConfigPackageUtility::CreateStage("_api");
ConfigPackageUtility::ActivateStage("_api", stage);
}
String path = GetObjectConfigPath(type, fullName);
Utility::MkDirP(Utility::DirName(path), 0700);
if (Utility::PathExists(path)) {
errors->Add("Configuration file '" + path + "' already exists.");
return false;
}
std::ofstream fp(path.CStr(), std::ofstream::out | std::ostream::trunc);
fp << config;
fp.close();
Expression *expr = ConfigCompiler::CompileFile(path, String(), "_api");
try {
ActivationScope ascope;
ScriptFrame frame;
expr->Evaluate(frame);
delete expr;
expr = NULL;
WorkQueue upq;
std::vector<ConfigItem::Ptr> newItems;
if (!ConfigItem::CommitItems(ascope.GetContext(), upq, newItems) || !ConfigItem::ActivateItems(upq, newItems, true)) {
if (errors) {
if (unlink(path.CStr()) < 0 && errno != ENOENT) {
BOOST_THROW_EXCEPTION(posix_error()
<< boost::errinfo_api_function("unlink")
<< boost::errinfo_errno(errno)
<< boost::errinfo_file_name(path));
}
for (const boost::exception_ptr& ex : upq.GetExceptions()) {
errors->Add(DiagnosticInformation(ex));
}
}
return false;
}
ApiListener::UpdateObjectAuthority();
} catch (const std::exception& ex) {
delete expr;
if (unlink(path.CStr()) < 0 && errno != ENOENT) {
BOOST_THROW_EXCEPTION(posix_error()
<< boost::errinfo_api_function("unlink")
<< boost::errinfo_errno(errno)
<< boost::errinfo_file_name(path));
}
if (errors)
errors->Add(DiagnosticInformation(ex));
return false;
}
return true;
}
bool ConfigObjectUtility::DeleteObjectHelper(const ConfigObject::Ptr& object, bool cascade, const Array::Ptr& errors)
{
std::vector<Object::Ptr> parents = DependencyGraph::GetParents(object);
Type::Ptr type = object->GetReflectionType();
if (!parents.empty() && !cascade) {
if (errors)
errors->Add("Object '" + object->GetName() + "' of type '" + type->GetName() +
"' cannot be deleted because other objects depend on it. "
"Use cascading delete to delete it anyway.");
return false;
}
for (const Object::Ptr& pobj : parents) {
ConfigObject::Ptr parentObj = dynamic_pointer_cast<ConfigObject>(pobj);
if (!parentObj)
continue;
DeleteObjectHelper(parentObj, cascade, errors);
}
ConfigItem::Ptr item = ConfigItem::GetByTypeAndName(type, object->GetName());
try {
/* mark this object for cluster delete event */
object->SetExtension("ConfigObjectDeleted", true);
/* triggers signal for DB IDO and other interfaces */
object->Deactivate(true);
if (item)
item->Unregister();
else
object->Unregister();
} catch (const std::exception& ex) {
if (errors)
errors->Add(DiagnosticInformation(ex));
return false;
}
String path = GetObjectConfigPath(object->GetReflectionType(), object->GetName());
if (Utility::PathExists(path)) {
if (unlink(path.CStr()) < 0 && errno != ENOENT) {
BOOST_THROW_EXCEPTION(posix_error()
<< boost::errinfo_api_function("unlink")
<< boost::errinfo_errno(errno)
<< boost::errinfo_file_name(path));
}
}
return true;
}
bool ConfigObjectUtility::DeleteObject(const ConfigObject::Ptr& object, bool cascade, const Array::Ptr& errors)
{
if (object->GetPackage() != "_api") {
if (errors)
errors->Add("Object cannot be deleted because it was not created using the API.");
return false;
}
return DeleteObjectHelper(object, cascade, errors);
}