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qgsserver.cpp
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qgsserver.cpp
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/***************************************************************************
qgsserver.cpp
A server application supporting WMS / WFS / WCS
-------------------
begin : July 04, 2006
copyright : (C) 2006 by Marco Hugentobler & Ionut Iosifescu Enescu
: (C) 2015 by Alessandro Pasotti
email : marco dot hugentobler at karto dot baug dot ethz dot ch
: elpaso at itopen dot it
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
//for CMAKE_INSTALL_PREFIX
#include "qgsconfig.h"
#include "qgsserver.h"
#include "qgsauthmanager.h"
#include "qgscapabilitiescache.h"
#include "qgsfontutils.h"
#include "qgsgetrequesthandler.h"
#include "qgspostrequesthandler.h"
#include "qgssoaprequesthandler.h"
#include "qgsproviderregistry.h"
#include "qgslogger.h"
#include "qgswmsserver.h"
#include "qgswfsserver.h"
#include "qgswcsserver.h"
#include "qgsmapserviceexception.h"
#include "qgspallabeling.h"
#include "qgsnetworkaccessmanager.h"
#include "qgsmaplayerregistry.h"
#include "qgsserverlogger.h"
#include "qgseditorwidgetregistry.h"
#ifdef HAVE_SERVER_PYTHON_PLUGINS
#include "qgsaccesscontrolfilter.h"
#endif
#include <QDomDocument>
#include <QNetworkDiskCache>
#include <QImage>
#include <QSettings>
#include <QDateTime>
#include <QScopedPointer>
// TODO: remove, it's only needed by a single debug message
#include <fcgi_stdio.h>
#include <stdlib.h>
// Server status static initialisers.
// Default values are for C++, SIP bindings will override their
// options in in init()
QString* QgsServer::sConfigFilePath = nullptr;
QgsCapabilitiesCache* QgsServer::sCapabilitiesCache = nullptr;
QgsMapRenderer* QgsServer::sMapRenderer = nullptr;
#ifdef HAVE_SERVER_PYTHON_PLUGINS
QgsServerInterfaceImpl*QgsServer::sServerInterface = nullptr;
#endif
// Initialization must run once for all servers
bool QgsServer::sInitialised = false;
bool QgsServer::sCaptureOutput = true;
QgsServer::QgsServer( bool captureOutput )
{
// QgsApplication must exist
if ( qobject_cast<QgsApplication*>( qApp ) == nullptr )
{
qFatal( "A QgsApplication must exist before a QgsServer instance can be created." );
abort();
}
sCaptureOutput = captureOutput;
init();
saveEnvVars();
}
QgsServer::~QgsServer()
{
}
QString& QgsServer::serverName()
{
static QString* name = new QString( QStringLiteral( "qgis_server" ) );
return *name;
}
QFileInfo QgsServer::defaultAdminSLD()
{
return QFileInfo( QStringLiteral( "admin.sld" ) );
}
/**
* @brief QgsServer::setupNetworkAccessManager
*/
void QgsServer::setupNetworkAccessManager()
{
QSettings settings;
QgsNetworkAccessManager *nam = QgsNetworkAccessManager::instance();
QNetworkDiskCache *cache = new QNetworkDiskCache( nullptr );
QString cacheDirectory = settings.value( QStringLiteral( "cache/directory" ) ).toString();
if ( cacheDirectory.isEmpty() )
cacheDirectory = QgsApplication::qgisSettingsDirPath() + "cache";
qint64 cacheSize = settings.value( QStringLiteral( "cache/size" ), 50 * 1024 * 1024 ).toULongLong();
QgsMessageLog::logMessage( QStringLiteral( "setCacheDirectory: %1" ).arg( cacheDirectory ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( QStringLiteral( "setMaximumCacheSize: %1" ).arg( cacheSize ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
cache->setCacheDirectory( cacheDirectory );
cache->setMaximumCacheSize( cacheSize );
QgsMessageLog::logMessage( QStringLiteral( "cacheDirectory: %1" ).arg( cache->cacheDirectory() ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( QStringLiteral( "maximumCacheSize: %1" ).arg( cache->maximumCacheSize() ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
nam->setCache( cache );
}
/**
* @brief QgsServer::createRequestHandler factory, creates a request instance
* @param captureOutput
* @return request instance
*/
QgsRequestHandler* QgsServer::createRequestHandler( const bool captureOutput )
{
QgsRequestHandler* requestHandler = nullptr;
char* requestMethod = getenv( "REQUEST_METHOD" );
if ( requestMethod )
{
if ( strcmp( requestMethod, "POST" ) == 0 )
{
//requestHandler = new QgsSOAPRequestHandler();
requestHandler = new QgsPostRequestHandler( captureOutput );
}
else
{
requestHandler = new QgsGetRequestHandler( captureOutput );
}
}
else
{
requestHandler = new QgsGetRequestHandler( captureOutput );
}
return requestHandler;
}
/**
* @brief QgsServer::defaultProjectFile
* @return the default project file
*/
QFileInfo QgsServer::defaultProjectFile()
{
QDir currentDir;
fprintf( FCGI_stderr, "current directory: %s\n", currentDir.absolutePath().toUtf8().constData() );
QStringList nameFilterList;
nameFilterList << QStringLiteral( "*.qgs" );
QFileInfoList projectFiles = currentDir.entryInfoList( nameFilterList, QDir::Files, QDir::Name );
for ( int x = 0; x < projectFiles.size(); x++ )
{
QgsMessageLog::logMessage( projectFiles.at( x ).absoluteFilePath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( projectFiles.size() < 1 )
{
return QFileInfo();
}
return projectFiles.at( 0 );
}
/**
* @brief QgsServer::printRequestParameters prints the request parameters
* @param parameterMap
* @param logLevel
*/
void QgsServer::printRequestParameters( const QMap< QString, QString>& parameterMap, int logLevel )
{
if ( logLevel > 0 )
{
return;
}
QMap< QString, QString>::const_iterator pIt = parameterMap.constBegin();
for ( ; pIt != parameterMap.constEnd(); ++pIt )
{
QgsMessageLog::logMessage( pIt.key() + ":" + pIt.value(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
}
/**
* @brief QgsServer::printRequestInfos prints debug information about the request
*/
void QgsServer::printRequestInfos()
{
QgsMessageLog::logMessage( QStringLiteral( "********************new request***************" ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
if ( getenv( "REMOTE_ADDR" ) )
{
QgsMessageLog::logMessage( "remote ip: " + QString( getenv( "REMOTE_ADDR" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "REMOTE_HOST" ) )
{
QgsMessageLog::logMessage( "remote ip: " + QString( getenv( "REMOTE_HOST" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "REMOTE_USER" ) )
{
QgsMessageLog::logMessage( "remote user: " + QString( getenv( "REMOTE_USER" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "REMOTE_IDENT" ) )
{
QgsMessageLog::logMessage( "REMOTE_IDENT: " + QString( getenv( "REMOTE_IDENT" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "CONTENT_TYPE" ) )
{
QgsMessageLog::logMessage( "CONTENT_TYPE: " + QString( getenv( "CONTENT_TYPE" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "AUTH_TYPE" ) )
{
QgsMessageLog::logMessage( "AUTH_TYPE: " + QString( getenv( "AUTH_TYPE" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "HTTP_USER_AGENT" ) )
{
QgsMessageLog::logMessage( "HTTP_USER_AGENT: " + QString( getenv( "HTTP_USER_AGENT" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "HTTP_PROXY" ) )
{
QgsMessageLog::logMessage( "HTTP_PROXY: " + QString( getenv( "HTTP_PROXY" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "HTTPS_PROXY" ) )
{
QgsMessageLog::logMessage( "HTTPS_PROXY: " + QString( getenv( "HTTPS_PROXY" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
if ( getenv( "NO_PROXY" ) )
{
QgsMessageLog::logMessage( "NO_PROXY: " + QString( getenv( "NO_PROXY" ) ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
}
void QgsServer::dummyMessageHandler( QtMsgType type, const char *msg )
{
#if 0 //def QGSMSDEBUG
QString output;
switch ( type )
{
case QtDebugMsg:
output += "Debug: ";
break;
case QtCriticalMsg:
output += "Critical: ";
break;
case QtWarningMsg:
output += "Warning: ";
break;
case QtFatalMsg:
output += "Fatal: ";
}
output += msg;
QgsLogger::logMessageToFile( output );
if ( type == QtFatalMsg )
abort();
#else
Q_UNUSED( type );
Q_UNUSED( msg );
#endif
}
/**
* @brief QgsServer::configPath
* @param defaultConfigPath
* @param parameters
* @return config file path
*/
QString QgsServer::configPath( const QString& defaultConfigPath, const QMap<QString, QString>& parameters )
{
QString cfPath( defaultConfigPath );
QString projectFile = getenv( "QGIS_PROJECT_FILE" );
if ( !projectFile.isEmpty() )
{
cfPath = projectFile;
QgsDebugMsg( QString( "QGIS_PROJECT_FILE:%1" ).arg( cfPath ) );
}
else
{
QMap<QString, QString>::const_iterator paramIt = parameters.find( QStringLiteral( "MAP" ) );
if ( paramIt == parameters.constEnd() )
{
QgsMessageLog::logMessage( QStringLiteral( "Using default configuration file path: %1" ).arg( defaultConfigPath ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
else
{
cfPath = paramIt.value();
QgsDebugMsg( QString( "MAP:%1" ).arg( cfPath ) );
}
}
return cfPath;
}
/**
* Server initialization
*/
bool QgsServer::init( )
{
if ( sInitialised )
{
return false;
}
QgsServerLogger::instance();
#ifndef _MSC_VER
qInstallMsgHandler( dummyMessageHandler );
#endif
QString optionsPath = getenv( "QGIS_OPTIONS_PATH" );
if ( !optionsPath.isEmpty() )
{
QgsMessageLog::logMessage( "Options PATH: " + optionsPath, QStringLiteral( "Server" ), QgsMessageLog::INFO );
QSettings::setDefaultFormat( QSettings::IniFormat );
QSettings::setPath( QSettings::IniFormat, QSettings::UserScope, optionsPath );
}
QCoreApplication::setOrganizationName( QgsApplication::QGIS_ORGANIZATION_NAME );
QCoreApplication::setOrganizationDomain( QgsApplication::QGIS_ORGANIZATION_DOMAIN );
QCoreApplication::setApplicationName( QgsApplication::QGIS_APPLICATION_NAME );
//Default prefix path may be altered by environment variable
QgsApplication::init();
#if !defined(Q_OS_WIN)
// init QGIS's paths - true means that all path will be inited from prefix
QgsApplication::setPrefixPath( CMAKE_INSTALL_PREFIX, true );
#endif
#if defined(SERVER_SKIP_ECW)
QgsMessageLog::logMessage( "Skipping GDAL ECW drivers in server.", "Server", QgsMessageLog::INFO );
QgsApplication::skipGdalDriver( "ECW" );
QgsApplication::skipGdalDriver( "JP2ECW" );
#endif
setupNetworkAccessManager();
QDomImplementation::setInvalidDataPolicy( QDomImplementation::DropInvalidChars );
// Instantiate the plugin directory so that providers are loaded
QgsProviderRegistry::instance( QgsApplication::pluginPath() );
QgsMessageLog::logMessage( "Prefix PATH: " + QgsApplication::prefixPath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( "Plugin PATH: " + QgsApplication::pluginPath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( "PkgData PATH: " + QgsApplication::pkgDataPath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( "User DB PATH: " + QgsApplication::qgisUserDbFilePath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( "Auth DB PATH: " + QgsApplication::qgisAuthDbFilePath(), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsMessageLog::logMessage( "SVG PATHS: " + QgsApplication::svgPaths().join( QDir::separator() ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
QgsApplication::createDB(); //init qgis.db (e.g. necessary for user crs)
// Instantiate authentication system
// creates or uses qgis-auth.db in ~/.qgis3/ or directory defined by QGIS_AUTH_DB_DIR_PATH env variable
// set the master password as first line of file defined by QGIS_AUTH_PASSWORD_FILE env variable
// (QGIS_AUTH_PASSWORD_FILE variable removed from environment after accessing)
QgsAuthManager::instance()->init( QgsApplication::pluginPath() );
QString defaultConfigFilePath;
QFileInfo projectFileInfo = defaultProjectFile(); //try to find a .qgs file in the server directory
if ( projectFileInfo.exists() )
{
defaultConfigFilePath = projectFileInfo.absoluteFilePath();
QgsMessageLog::logMessage( "Using default project file: " + defaultConfigFilePath, QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
else
{
QFileInfo adminSLDFileInfo = defaultAdminSLD();
if ( adminSLDFileInfo.exists() )
{
defaultConfigFilePath = adminSLDFileInfo.absoluteFilePath();
}
}
// Store the config file path
sConfigFilePath = new QString( defaultConfigFilePath );
//create cache for capabilities XML
sCapabilitiesCache = new QgsCapabilitiesCache();
sMapRenderer = new QgsMapRenderer;
sMapRenderer->setLabelingEngine( new QgsPalLabeling() );
#ifdef ENABLE_MS_TESTS
QgsFontUtils::loadStandardTestFonts( QStringList() << QStringLiteral( "Roman" ) << QStringLiteral( "Bold" ) );
#endif
QgsEditorWidgetRegistry::initEditors();
#ifdef HAVE_SERVER_PYTHON_PLUGINS
sServerInterface = new QgsServerInterfaceImpl( sCapabilitiesCache );
#endif
sInitialised = true;
QgsMessageLog::logMessage( QStringLiteral( "Server initialized" ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
return true;
}
void QgsServer::putenv( const QString &var, const QString &val )
{
#ifdef _MSC_VER
_putenv_s( var.toStdString().c_str(), val.toStdString().c_str() );
#else
setenv( var.toStdString().c_str(), val.toStdString().c_str(), 1 );
#endif
}
/**
* @brief Handles the request
* @param queryString
* @return response headers and body
*/
QPair<QByteArray, QByteArray> QgsServer::handleRequest( const QString& queryString )
{
//apply environment variables
QHash< QString, QString >::const_iterator envIt = mEnvironmentVariables.constBegin();
for ( ; envIt != mEnvironmentVariables.constEnd(); ++envIt )
{
putenv( envIt.key(), envIt.value() );
}
/*
* This is mainly for python bindings, passing QUERY_STRING
* to handleRequest without using os.environment
*/
if ( ! queryString.isEmpty() )
putenv( QStringLiteral( "QUERY_STRING" ), queryString );
int logLevel = QgsServerLogger::instance()->logLevel();
QTime time; //used for measuring request time if loglevel < 1
QgsMapLayerRegistry::instance()->removeAllMapLayers();
// Clean up Expression Context
// because each call to QgsMapLayer::draw add items to QgsExpressionContext scope
// list. This prevent the scope list to grow indefinitely and seriously deteriorate
// performances and memory in the long run
sMapRenderer->rendererContext()->setExpressionContext( QgsExpressionContext() );
qApp->processEvents();
if ( logLevel < 1 )
{
time.start();
printRequestInfos();
}
//Request handler
QScopedPointer<QgsRequestHandler> theRequestHandler( createRequestHandler( sCaptureOutput ) );
try
{
// TODO: split parse input into plain parse and processing from specific services
theRequestHandler->parseInput();
}
catch ( QgsMapServiceException& e )
{
QgsMessageLog::logMessage( "Parse input exception: " + e.message(), QStringLiteral( "Server" ), QgsMessageLog::CRITICAL );
theRequestHandler->setServiceException( e );
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
// Set the request handler into the interface for plugins to manipulate it
sServerInterface->setRequestHandler( theRequestHandler.data() );
// Iterate filters and call their requestReady() method
QgsServerFiltersMap::const_iterator filtersIterator;
QgsServerFiltersMap filters = sServerInterface->filters();
for ( filtersIterator = filters.constBegin(); filtersIterator != filters.constEnd(); ++filtersIterator )
{
filtersIterator.value()->requestReady();
}
//Pass the filters to the requestHandler, this is needed for the following reasons:
// 1. allow core services to access plugin filters and implement thir own plugin hooks
// 2. allow requestHandler to call sendResponse plugin hook
theRequestHandler->setPluginFilters( sServerInterface->filters() );
#endif
// Copy the parameters map
QMap<QString, QString> parameterMap( theRequestHandler->parameterMap() );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
const QgsAccessControl* accessControl = nullptr;
accessControl = sServerInterface->accessControls();
#endif
printRequestParameters( parameterMap, logLevel );
QMap<QString, QString>::const_iterator paramIt;
//Config file path
QString configFilePath = configPath( *sConfigFilePath, parameterMap );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
sServerInterface->setConfigFilePath( configFilePath );
#endif
//Service parameter
QString serviceString = theRequestHandler->parameter( QStringLiteral( "SERVICE" ) );
if ( serviceString.isEmpty() )
{
// SERVICE not mandatory for WMS 1.3.0 GetMap & GetFeatureInfo
QString requestString = theRequestHandler->parameter( QStringLiteral( "REQUEST" ) );
if ( requestString == QLatin1String( "GetMap" ) || requestString == QLatin1String( "GetFeatureInfo" ) )
{
serviceString = QStringLiteral( "WMS" );
}
}
//possibility for client to suggest a download filename
QString outputFileName = theRequestHandler->parameter( QStringLiteral( "FILE_NAME" ) );
if ( !outputFileName.isEmpty() )
{
theRequestHandler->setDefaultHeaders();
theRequestHandler->setHeader( QStringLiteral( "Content-Disposition" ), "attachment; filename=\"" + outputFileName + "\"" );
}
// Enter core services main switch
if ( !theRequestHandler->exceptionRaised() )
{
if ( serviceString == QLatin1String( "WCS" ) )
{
QgsWCSProjectParser* p = QgsConfigCache::instance()->wcsConfiguration(
configFilePath
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
if ( !p )
{
theRequestHandler->setServiceException( QgsMapServiceException( QStringLiteral( "Project file error" ), QStringLiteral( "Error reading the project file" ) ) );
}
else
{
QgsWCSServer wcsServer(
configFilePath
, parameterMap
, p
, theRequestHandler.data()
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
wcsServer.executeRequest();
}
}
else if ( serviceString == QLatin1String( "WFS" ) )
{
QgsWfsProjectParser* p = QgsConfigCache::instance()->wfsConfiguration(
configFilePath
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
if ( !p )
{
theRequestHandler->setServiceException( QgsMapServiceException( QStringLiteral( "Project file error" ), QStringLiteral( "Error reading the project file" ) ) );
}
else
{
QgsWfsServer wfsServer(
configFilePath
, parameterMap
, p
, theRequestHandler.data()
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
wfsServer.executeRequest();
}
}
else if ( serviceString == QLatin1String( "WMS" ) )
{
QgsWmsConfigParser* p = QgsConfigCache::instance()->wmsConfiguration(
configFilePath
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
if ( !p )
{
theRequestHandler->setServiceException( QgsMapServiceException( QStringLiteral( "WMS configuration error" ), QStringLiteral( "There was an error reading the project file or the SLD configuration" ) ) );
}
else
{
QgsWmsServer wmsServer(
configFilePath
, parameterMap
, p
, theRequestHandler.data()
, sMapRenderer
, sCapabilitiesCache
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
);
wmsServer.executeRequest();
}
}
else
{
theRequestHandler->setServiceException( QgsMapServiceException( QStringLiteral( "Service configuration error" ), QStringLiteral( "Service unknown or unsupported" ) ) );
} // end switch
} // end if not exception raised
#ifdef HAVE_SERVER_PYTHON_PLUGINS
// Iterate filters and call their responseComplete() method
filters = sServerInterface->filters();
for ( filtersIterator = filters.constBegin(); filtersIterator != filters.constEnd(); ++filtersIterator )
{
filtersIterator.value()->responseComplete();
}
// We are done using theRequestHandler in plugins, make sure we don't access
// to a deleted request handler from Python bindings
sServerInterface->clearRequestHandler();
#endif
theRequestHandler->sendResponse();
if ( logLevel < 1 )
{
QgsMessageLog::logMessage( "Request finished in " + QString::number( time.elapsed() ) + " ms", QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
// Returns the header and response bytestreams (to be used in Python bindings)
return theRequestHandler->getResponse();
}
#ifdef HAVE_SERVER_PYTHON_PLUGINS
void QgsServer::initPython()
{
// Init plugins
if ( ! QgsServerPlugins::initPlugins( sServerInterface ) )
{
QgsMessageLog::logMessage( QStringLiteral( "No server python plugins are available" ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
else
{
QgsMessageLog::logMessage( QStringLiteral( "Server python plugins loaded" ), QStringLiteral( "Server" ), QgsMessageLog::INFO );
}
}
#endif
#if 0
// The following code was used to test type conversion in python bindings
QPair<QByteArray, QByteArray> QgsServer::testQPair( QPair<QByteArray, QByteArray> pair )
{
return pair;
}
#endif
void QgsServer::saveEnvVars()
{
saveEnvVar( QStringLiteral( "MAX_CACHE_LAYERS" ) );
saveEnvVar( QStringLiteral( "DEFAULT_DATUM_TRANSFORM" ) );
}
void QgsServer::saveEnvVar( const QString& variableName )
{
const char* env = getenv( variableName.toLocal8Bit() );
if ( !env )
{
return;
}
mEnvironmentVariables.insert( variableName, QString::fromLocal8Bit( env ) );
}