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			254 lines
		
	
	
		
			7.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			254 lines
		
	
	
		
			7.3 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
/******************************************************************************
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 * Icinga 2                                                                   *
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 * Copyright (C) 2012-2015 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 "remote/objectqueryhandler.hpp"
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#include "remote/httputility.hpp"
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#include "remote/filterutility.hpp"
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#include "base/serializer.hpp"
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#include "base/dependencygraph.hpp"
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#include "base/configtype.hpp"
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#include <boost/algorithm/string.hpp>
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#include <set>
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using namespace icinga;
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REGISTER_URLHANDLER("/v1/objects", ObjectQueryHandler);
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Dictionary::Ptr ObjectQueryHandler::SerializeObjectAttrs(const Object::Ptr& object,
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    const String& attrPrefix, const Array::Ptr& attrs, bool isJoin, bool allAttrs)
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{
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	Type::Ptr type = object->GetReflectionType();
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	std::vector<int> fids;
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	if (isJoin && attrs) {
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		ObjectLock olock(attrs);
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		BOOST_FOREACH(const String& attr, attrs) {
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			if (attr == attrPrefix) {
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				allAttrs = true;
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				break;
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			}
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		}
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	}
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	if (!isJoin && (!attrs || attrs->GetLength() == 0))
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		allAttrs = true;
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	if (allAttrs) {
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		for (int fid = 0; fid < type->GetFieldCount(); fid++) {
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			fids.push_back(fid);
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		}
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	} else if (attrs) {
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		ObjectLock olock(attrs);
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		BOOST_FOREACH(const String& attr, attrs) {
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			String userAttr;
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			if (isJoin) {
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				String::SizeType dpos = attr.FindFirstOf(".");
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				if (dpos == String::NPos)
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					continue;
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				String userJoinAttr = attr.SubStr(0, dpos);
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				if (userJoinAttr != attrPrefix)
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					continue;
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				userAttr = attr.SubStr(dpos + 1);
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			} else
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				userAttr = attr;
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			int fid = type->GetFieldId(userAttr);
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			if (fid < 0)
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				BOOST_THROW_EXCEPTION(ScriptError("Invalid field specified: " + userAttr));
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			fids.push_back(fid);
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		}
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	}
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	Dictionary::Ptr resultAttrs = new Dictionary();
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	BOOST_FOREACH(int& fid, fids)
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	{
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		Field field = type->GetFieldInfo(fid);
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		Value val = object->GetField(fid);
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		/* hide attributes which shouldn't be user-visible */
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		if (field.Attributes & FANoUserView)
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			continue;
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		/* hide internal navigation fields */
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		if (field.Attributes & FANavigation) {
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			Value nval = object->NavigateField(fid);
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			if (val == nval)
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				continue;
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		}
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		Value sval = Serialize(val, FAConfig | FAState);
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		resultAttrs->Set(field.Name, sval);
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	}
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	return resultAttrs;
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}
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bool ObjectQueryHandler::HandleRequest(const ApiUser::Ptr& user, HttpRequest& request, HttpResponse& response)
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{
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	if (request.RequestUrl->GetPath().size() < 3 || request.RequestUrl->GetPath().size() > 4)
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		return false;
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	if (request.RequestMethod != "GET")
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		return false;
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	Type::Ptr type = FilterUtility::TypeFromPluralName(request.RequestUrl->GetPath()[2]);
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	if (!type) {
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		HttpUtility::SendJsonError(response, 400, "Invalid type specified.");
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		return true;
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	}
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	QueryDescription qd;
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	qd.Types.insert(type->GetName());
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	qd.Permission = "objects/query/" + type->GetName();
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	Dictionary::Ptr params = HttpUtility::FetchRequestParameters(request);
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	Array::Ptr uattrs = params->Get("attrs");
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	Array::Ptr ujoins = params->Get("joins");
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	Array::Ptr umetas = params->Get("meta");
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	bool allJoins = HttpUtility::GetLastParameter(params, "all_joins");
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	params->Set("type", type->GetName());
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	if (request.RequestUrl->GetPath().size() >= 4) {
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		String attr = type->GetName();
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		boost::algorithm::to_lower(attr);
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		params->Set(attr, request.RequestUrl->GetPath()[3]);
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	}
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	std::vector<Value> objs = FilterUtility::GetFilterTargets(qd, params, user);
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	Array::Ptr results = new Array();
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	results->Reserve(objs.size());
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	std::set<String> joinAttrs;
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	if (allJoins) {
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		for (int fid = 0; fid < type->GetFieldCount(); fid++) {
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			Field field = type->GetFieldInfo(fid);
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			if (field.Attributes & FANavigation)
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				joinAttrs.insert(field.Name);
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		}
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	} else if (ujoins) {
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		ObjectLock olock(ujoins);
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		BOOST_FOREACH(const String& ujoin, ujoins) {
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			joinAttrs.insert(ujoin.SubStr(0, ujoin.FindFirstOf(".")));
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		}
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	}
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	BOOST_FOREACH(const ConfigObject::Ptr& obj, objs) {
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		Dictionary::Ptr result1 = new Dictionary();
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		results->Add(result1);
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		result1->Set("name", obj->GetName());
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		result1->Set("type", obj->GetReflectionType()->GetName());
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		Dictionary::Ptr metaAttrs = new Dictionary();
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		result1->Set("meta", metaAttrs);
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		if (umetas) {
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			ObjectLock olock(umetas);
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			BOOST_FOREACH(const String& meta, umetas) {
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				if (meta == "used_by") {
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					Array::Ptr used_by = new Array();
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					metaAttrs->Set("used_by", used_by);
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					BOOST_FOREACH(const Object::Ptr& pobj, DependencyGraph::GetParents((obj)))
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					{
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						ConfigObject::Ptr configObj = dynamic_pointer_cast<ConfigObject>(pobj);
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						if (!configObj)
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							continue;
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						Dictionary::Ptr refInfo = new Dictionary();
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						refInfo->Set("type", configObj->GetType()->GetName());
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						refInfo->Set("name", configObj->GetName());
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						used_by->Add(refInfo);
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					}
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				} else {
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					HttpUtility::SendJsonError(response, 400, "Invalid field specified for meta: " + meta);
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					return true;
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				}
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			}
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		}
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		try {
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			result1->Set("attrs", SerializeObjectAttrs(obj, String(), uattrs, false, false));
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		} catch (const ScriptError& ex) {
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			HttpUtility::SendJsonError(response, 400, ex.what());
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			return true;
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		}
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		Dictionary::Ptr joins = new Dictionary();
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		result1->Set("joins", joins);
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		BOOST_FOREACH(const String& joinAttr, joinAttrs) {
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			Object::Ptr joinedObj;
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			String prefix;
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			int fid = type->GetFieldId(joinAttr);
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			if (fid < 0) {
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				HttpUtility::SendJsonError(response, 400, "Invalid field specified for join: " + joinAttr);
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				return true;
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			}
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			Field field = type->GetFieldInfo(fid);
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			if (!(field.Attributes & FANavigation)) {
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				HttpUtility::SendJsonError(response, 400, "Not a joinable field: " + joinAttr);
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				return true;
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			}
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			joinedObj = obj->NavigateField(fid);
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			if (!joinedObj)
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				continue;
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			prefix = field.NavigationName;
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			boost::algorithm::to_lower(prefix);
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			try {
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				joins->Set(prefix, SerializeObjectAttrs(joinedObj, prefix, ujoins, true, allJoins));
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			} catch (const ScriptError& ex) {
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				HttpUtility::SendJsonError(response, 400, ex.what());
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				return true;
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			}
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		}
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	}
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	Dictionary::Ptr result = new Dictionary();
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	result->Set("results", results);
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	response.SetStatus(200, "OK");
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	HttpUtility::SendJsonBody(response, result);
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	return true;
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}
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