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			331 lines
		
	
	
		
			8.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
			
		
		
	
	
			331 lines
		
	
	
		
			8.4 KiB
		
	
	
	
		
			C++
		
	
	
	
	
	
| /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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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/case_conv.hpp>
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| #include <set>
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| #include <unordered_map>
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| 
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| using namespace icinga;
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| 
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| REGISTER_URLHANDLER("/v1/objects", ObjectQueryHandler);
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| 
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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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| 
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| 	std::vector<int> fids;
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| 
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| 	if (isJoin && attrs) {
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| 		ObjectLock olock(attrs);
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| 		for (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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| 
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| 	if (!isJoin && (!attrs || attrs->GetLength() == 0))
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| 		allAttrs = true;
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| 
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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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| 		for (const String& attr : attrs) {
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| 			String userAttr;
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| 
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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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| 
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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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| 
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| 				userAttr = attr.SubStr(dpos + 1);
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| 			} else
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| 				userAttr = attr;
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| 
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| 			int fid = type->GetFieldId(userAttr);
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| 
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| 			if (fid < 0)
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| 				BOOST_THROW_EXCEPTION(ScriptError("Invalid field specified: " + userAttr));
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| 
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| 			fids.push_back(fid);
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| 		}
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| 	}
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| 
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| 	DictionaryData resultAttrs;
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| 	resultAttrs.reserve(fids.size());
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| 
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| 	for (int fid : fids) {
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| 		Field field = type->GetFieldInfo(fid);
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| 
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| 		Value val = object->GetField(fid);
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| 
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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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| 
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| 		/* hide internal navigation fields */
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| 		if (field.Attributes & FANavigation && !(field.Attributes & (FAConfig | FAState)))
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| 			continue;
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| 
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| 		Value sval = Serialize(val, FAConfig | FAState);
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| 		resultAttrs.emplace_back(field.Name, sval);
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| 	}
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| 
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| 	return new Dictionary(std::move(resultAttrs));
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| }
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| 
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| bool ObjectQueryHandler::HandleRequest(
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| 	AsioTlsStream& stream,
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| 	const ApiUser::Ptr& user,
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| 	boost::beast::http::request<boost::beast::http::string_body>& request,
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| 	const Url::Ptr& url,
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| 	boost::beast::http::response<boost::beast::http::string_body>& response,
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| 	const Dictionary::Ptr& params,
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| 	boost::asio::yield_context& yc,
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| 	HttpServerConnection& server
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| )
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| {
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| 	namespace http = boost::beast::http;
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| 
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| 	if (url->GetPath().size() < 3 || url->GetPath().size() > 4)
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| 		return false;
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| 
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| 	if (request.method() != http::verb::get)
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| 		return false;
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| 
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| 	Type::Ptr type = FilterUtility::TypeFromPluralName(url->GetPath()[2]);
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| 
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| 	if (!type) {
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| 		HttpUtility::SendJsonError(response, params, 400, "Invalid type specified.");
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| 		return true;
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| 	}
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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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| 
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| 	Array::Ptr uattrs, ujoins, umetas;
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| 
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| 	try {
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| 		uattrs = params->Get("attrs");
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| 	} catch (const std::exception&) {
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| 		HttpUtility::SendJsonError(response, params, 400,
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| 			"Invalid type for 'attrs' attribute specified. Array type is required.");
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| 		return true;
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| 	}
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| 
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| 	try {
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| 		ujoins = params->Get("joins");
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| 	} catch (const std::exception&) {
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| 		HttpUtility::SendJsonError(response, params, 400,
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| 			"Invalid type for 'joins' attribute specified. Array type is required.");
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| 		return true;
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| 	}
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| 
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| 	try {
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| 		umetas = params->Get("meta");
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| 	} catch (const std::exception&) {
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| 		HttpUtility::SendJsonError(response, params, 400,
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| 			"Invalid type for 'meta' attribute specified. Array type is required.");
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| 		return true;
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| 	}
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| 
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| 	bool allJoins = HttpUtility::GetLastParameter(params, "all_joins");
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| 
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| 	params->Set("type", type->GetName());
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| 
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| 	if (url->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, url->GetPath()[3]);
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| 	}
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| 
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| 	std::vector<Value> objs;
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| 
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| 	try {
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| 		objs = FilterUtility::GetFilterTargets(qd, params, user);
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| 	} catch (const std::exception& ex) {
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| 		HttpUtility::SendJsonError(response, params, 404,
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| 			"No objects found.",
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| 			DiagnosticInformation(ex));
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| 		return true;
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| 	}
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| 
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| 	ArrayData results;
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| 	results.reserve(objs.size());
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| 
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| 	std::set<String> joinAttrs;
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| 	std::set<String> userJoinAttrs;
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| 
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| 	if (ujoins) {
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| 		ObjectLock olock(ujoins);
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| 		for (const String& ujoin : ujoins) {
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| 			userJoinAttrs.insert(ujoin.SubStr(0, ujoin.FindFirstOf(".")));
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| 		}
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| 	}
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| 
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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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| 
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| 		if (!(field.Attributes & FANavigation))
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| 			continue;
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| 
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| 		if (!allJoins && userJoinAttrs.find(field.NavigationName) == userJoinAttrs.end())
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| 			continue;
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| 
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| 		joinAttrs.insert(field.Name);
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| 	}
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| 
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| 	std::unordered_map<Type*, std::pair<bool, std::unique_ptr<Expression>>> typePermissions;
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| 	std::unordered_map<Object*, bool> objectAccessAllowed;
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| 
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| 	for (const ConfigObject::Ptr& obj : objs) {
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| 		DictionaryData result1{
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| 			{ "name", obj->GetName() },
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| 			{ "type", obj->GetReflectionType()->GetName() }
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| 		};
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| 
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| 		DictionaryData metaAttrs;
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| 
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| 		if (umetas) {
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| 			ObjectLock olock(umetas);
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| 			for (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.emplace_back("used_by", used_by);
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| 
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| 					for (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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| 
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| 						if (!configObj)
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| 							continue;
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| 
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| 						used_by->Add(new Dictionary({
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| 							{ "type", configObj->GetReflectionType()->GetName() },
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| 							{ "name", configObj->GetName() }
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| 						}));
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| 					}
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| 				} else if (meta == "location") {
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| 					metaAttrs.emplace_back("location", obj->GetSourceLocation());
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| 				} else {
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| 					HttpUtility::SendJsonError(response, params, 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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| 
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| 		result1.emplace_back("meta", new Dictionary(std::move(metaAttrs)));
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| 
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| 		try {
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| 			result1.emplace_back("attrs", SerializeObjectAttrs(obj, String(), uattrs, false, false));
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| 		} catch (const ScriptError& ex) {
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| 			HttpUtility::SendJsonError(response, params, 400, ex.what());
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| 			return true;
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| 		}
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| 
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| 		DictionaryData joins;
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| 
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| 		for (const String& joinAttr : joinAttrs) {
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| 			Object::Ptr joinedObj;
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| 			int fid = type->GetFieldId(joinAttr);
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| 
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| 			if (fid < 0) {
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| 				HttpUtility::SendJsonError(response, params, 400, "Invalid field specified for join: " + joinAttr);
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| 				return true;
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| 			}
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| 
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| 			Field field = type->GetFieldInfo(fid);
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| 
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| 			if (!(field.Attributes & FANavigation)) {
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| 				HttpUtility::SendJsonError(response, params, 400, "Not a joinable field: " + joinAttr);
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| 				return true;
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| 			}
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| 
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| 			joinedObj = obj->NavigateField(fid);
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| 
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| 			if (!joinedObj)
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| 				continue;
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| 
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| 			Type::Ptr reflectionType = joinedObj->GetReflectionType();
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| 			auto it = typePermissions.find(reflectionType.get());
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| 			bool granted;
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| 
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| 			if (it == typePermissions.end()) {
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| 				String permission = "objects/query/" + reflectionType->GetName();
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| 
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| 				std::unique_ptr<Expression> permissionFilter;
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| 				granted = FilterUtility::HasPermission(user, permission, &permissionFilter);
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| 
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| 				it = typePermissions.insert({reflectionType.get(), std::make_pair(granted, std::move(permissionFilter))}).first;
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| 			}
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| 
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| 			granted = it->second.first;
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| 			const std::unique_ptr<Expression>& permissionFilter = it->second.second;
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| 
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| 			if (!granted) {
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| 				// Not authorized
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| 				continue;
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| 			}
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| 
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| 			auto relation = objectAccessAllowed.find(joinedObj.get());
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| 			bool accessAllowed;
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| 
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| 			if (relation == objectAccessAllowed.end()) {
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| 				ScriptFrame permissionFrame(false, new Namespace());
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| 
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| 				try {
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| 					accessAllowed = FilterUtility::EvaluateFilter(permissionFrame, permissionFilter.get(), joinedObj);
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| 				} catch (const ScriptError& err) {
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| 					accessAllowed = false;
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| 				}
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| 
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| 				objectAccessAllowed.insert({joinedObj.get(), accessAllowed});
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| 			} else {
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| 				accessAllowed = relation->second;
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| 			}
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| 
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| 			if (!accessAllowed) {
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| 				// Access denied
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| 				continue;
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| 			}
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| 
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| 			String prefix = field.NavigationName;
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| 
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| 			try {
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| 				joins.emplace_back(prefix, SerializeObjectAttrs(joinedObj, prefix, ujoins, true, allJoins));
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| 			} catch (const ScriptError& ex) {
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| 				HttpUtility::SendJsonError(response, params, 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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| 		result1.emplace_back("joins", new Dictionary(std::move(joins)));
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| 
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| 		results.push_back(new Dictionary(std::move(result1)));
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| 	}
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| 
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| 	Dictionary::Ptr result = new Dictionary({
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| 		{ "results", new Array(std::move(results)) }
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| 	});
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| 
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| 	response.result(http::status::ok);
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| 	HttpUtility::SendJsonBody(response, params, result);
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| 
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| 	return true;
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| }
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