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qgswmsserver.cpp
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qgswmsserver.cpp
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/***************************************************************************
qgswmsserver.cpp
-------------------
begin : May 14, 2006
copyright : (C) 2006 by Marco Hugentobler & Ionut Iosifescu Enescu
email : marco dot hugentobler at karto dot baug dot ethz dot ch
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#include "qgswmsserver.h"
#include "qgscapabilitiescache.h"
#include "qgscsexception.h"
#include "qgsdxfexport.h"
#include "qgsfields.h"
#include "qgsfieldformatter.h"
#include "qgsfieldformatterregistry.h"
#include "qgsfeatureiterator.h"
#include "qgsgeometry.h"
#include "qgslayertree.h"
#include "qgslayertreemodel.h"
#include "qgslayertreemodellegendnode.h"
#include "qgslegendrenderer.h"
#include "qgsmaplayer.h"
#include "qgsmaplayerlegend.h"
#include "qgsmaptopixel.h"
#include "qgsproject.h"
#include "qgsrasteridentifyresult.h"
#include "qgsrasterlayer.h"
#include "qgsrasterrenderer.h"
#include "qgsscalecalculator.h"
#include "qgscoordinatereferencesystem.h"
#include "qgsvectordataprovider.h"
#include "qgsvectorlayer.h"
#include "qgslogger.h"
#include "qgsmessagelog.h"
#include "qgsmapserviceexception.h"
#include "qgssldconfigparser.h"
#include "qgssymbol.h"
#include "qgsrenderer.h"
#include "qgspaintenginehack.h"
#include "qgsogcutils.h"
#include "qgsfeature.h"
#include "qgseditorwidgetregistry.h"
#include "qgsserverstreamingdevice.h"
#include "qgsaccesscontrol.h"
#include "qgsfeaturerequest.h"
#include "qgsmaprenderercustompainterjob.h"
#include <QImage>
#include <QPainter>
#include <QStringList>
#include <QTemporaryFile>
#include <QTextStream>
#include <QDir>
//for printing
#include "qgscomposition.h"
#include <QBuffer>
#include <QPrinter>
#include <QSvgGenerator>
#include <QUrl>
#include <QPaintEngine>
QgsWmsServer::QgsWmsServer(
const QString& configFilePath
, QMap<QString, QString> ¶meters
, QgsWmsConfigParser* cp
, QgsRequestHandler* rh
, QgsCapabilitiesCache* capCache
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, const QgsAccessControl* accessControl
#endif
)
: QgsOWSServer(
configFilePath
, parameters
, rh
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, accessControl
#endif
)
, mCapabilitiesCache( capCache )
, mConfigParser( cp )
, mOwnsConfigParser( false )
, mDrawLegendLayerLabel( true )
, mDrawLegendItemLabel( true )
{
}
QgsWmsServer::QgsWmsServer()
: QgsOWSServer(
QString()
, QMap<QString, QString>()
, nullptr
#ifdef HAVE_SERVER_PYTHON_PLUGINS
, nullptr
#endif
)
, mCapabilitiesCache()
, mConfigParser( nullptr )
, mOwnsConfigParser( false )
, mDrawLegendLayerLabel( true )
, mDrawLegendItemLabel( true )
{
}
QgsWmsServer::~QgsWmsServer()
{
}
void QgsWmsServer::cleanupAfterRequest()
{
if ( mOwnsConfigParser )
{
delete mConfigParser;
mConfigParser = nullptr;
mOwnsConfigParser = false;
}
}
void QgsWmsServer::executeRequest()
{
if ( !mConfigParser || !mRequestHandler || !mCapabilitiesCache )
{
return; //TODO: error handling
}
//request type
QString request = mParameters.value( QStringLiteral( "REQUEST" ) );
if ( request.isEmpty() )
{
QgsMessageLog::logMessage( QStringLiteral( "unable to find 'REQUEST' parameter, exiting..." ) );
mRequestHandler->setServiceException( QgsMapServiceException( QStringLiteral( "OperationNotSupported" ), QStringLiteral( "Please check the value of the REQUEST parameter" ) ) );
cleanupAfterRequest();
return;
}
//version
QString version( QStringLiteral( "1.3.0" ) );
if ( mParameters.contains( "VERSION" ) )
{
version = mParameters.value( "VERSION" );
}
else if ( mParameters.contains( "WMTVER" ) ) //WMTVER needs to be supported by WMS 1.1.1 for backwards compatibility with WMS 1.0.0
{
version = mParameters.value( "WMTVER" );
}
bool getProjectSettings = ( request.compare( QLatin1String( "GetProjectSettings" ), Qt::CaseInsensitive ) == 0 );
if ( getProjectSettings )
{
version = QStringLiteral( "1.3.0" ); //getProjectSettings extends WMS 1.3.0 capabilities
}
if ( version == "1.1.1" )
{
if ( request.compare( "capabilities", Qt::CaseInsensitive ) == 0 )
{
request = QString( "GetCapabilities" );
}
}
//GetCapabilities
if ( request.compare( QLatin1String( "GetCapabilities" ), Qt::CaseInsensitive ) == 0 || getProjectSettings )
{
QStringList cacheKeyList;
cacheKeyList << ( getProjectSettings ? QStringLiteral( "projectSettings" ) : version );
cacheKeyList << getenv( "SERVER_NAME" );
bool cache = true;
#ifdef HAVE_SERVER_PYTHON_PLUGINS
cache = mAccessControl->fillCacheKey( cacheKeyList );
#endif
QString cacheKey = cacheKeyList.join( QStringLiteral( "-" ) );
const QDomDocument* capabilitiesDocument = mCapabilitiesCache->searchCapabilitiesDocument( mConfigFilePath, cacheKey );
if ( !capabilitiesDocument ) //capabilities xml not in cache. Create a new one
{
QgsMessageLog::logMessage( QStringLiteral( "Capabilities document not found in cache" ) );
QDomDocument doc;
try
{
doc = getCapabilities( version, getProjectSettings );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
cleanupAfterRequest();
return;
}
if ( cache )
{
mCapabilitiesCache->insertCapabilitiesDocument( mConfigFilePath, cacheKey, &doc );
capabilitiesDocument = mCapabilitiesCache->searchCapabilitiesDocument( mConfigFilePath, cacheKey );
}
else
{
doc = doc.cloneNode().toDocument();
capabilitiesDocument = &doc;
}
}
else
{
QgsMessageLog::logMessage( QStringLiteral( "Found capabilities document in cache" ) );
}
if ( capabilitiesDocument )
{
mRequestHandler->setGetCapabilitiesResponse( *capabilitiesDocument );
}
}
//GetMap
else if ( request.compare( QLatin1String( "GetMap" ), Qt::CaseInsensitive ) == 0 )
{
//export as dxf
QString format = mParameters.value( QStringLiteral( "FORMAT" ) );
if ( format.compare( QLatin1String( "application/dxf" ), Qt::CaseInsensitive ) == 0 )
{
try
{
getMapAsDxf();
cleanupAfterRequest();
return;
}
catch ( QgsMapServiceException& ex )
{
QgsMessageLog::logMessage( QStringLiteral( "Caught exception during GetMap request" ) );
mRequestHandler->setServiceException( ex );
cleanupAfterRequest();
return;
}
}
QImage* result = nullptr;
try
{
result = getMap();
}
catch ( QgsMapServiceException& ex )
{
QgsMessageLog::logMessage( QStringLiteral( "Caught exception during GetMap request" ) );
mRequestHandler->setServiceException( ex );
cleanupAfterRequest();
return;
}
if ( result )
{
QgsMessageLog::logMessage( QStringLiteral( "Setting GetMap response" ) );
mRequestHandler->setGetMapResponse( QStringLiteral( "WMS" ), result, getImageQuality() );
QgsMessageLog::logMessage( QStringLiteral( "Response sent" ) );
}
else
{
//do some error handling
QgsMessageLog::logMessage( QStringLiteral( "result image is 0" ) );
}
delete result;
}
//GetFeatureInfo
else if ( request.compare( QLatin1String( "GetFeatureInfo" ), Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument featureInfoDoc = getFeatureInfo( version );
QString infoFormat = mParameters.value( QStringLiteral( "INFO_FORMAT" ), QStringLiteral( "text/plain" ) );
mRequestHandler->setGetFeatureInfoResponse( featureInfoDoc, infoFormat );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
cleanupAfterRequest();
return;
}
catch ( QgsException& e )
{
QgsMapServiceException ex( QStringLiteral( "InternalError" ), e.what() );
mRequestHandler->setServiceException( ex );
cleanupAfterRequest();
return;
}
}
//GetContext
else if ( request.compare( QLatin1String( "GetContext" ), Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument doc = getContext();
mRequestHandler->setXmlResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
}
//GetSchemaExtension
else if ( request.compare( QLatin1String( "GetSchemaExtension" ), Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument doc = getSchemaExtension();
mRequestHandler->setXmlResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
}
//GetStyle for compatibility with earlier QGIS versions
else if ( request.compare( QLatin1String( "GetStyle" ), Qt::CaseInsensitive ) == 0 )
{
try
{
QDomDocument doc = getStyle();
mRequestHandler->setXmlResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
}
//GetStyles
else if ( request.compare( QLatin1String( "GetStyles" ), Qt::CaseInsensitive ) == 0 )
{
// GetStyles is defined for WMS1.1.1/SLD1.0
// and in qgis-server WMS1.3.0 extension
try
{
QDomDocument doc = getStyles();
mRequestHandler->setXmlResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
}
//GetStyles
else if ( request.compare( QLatin1String( "DescribeLayer" ), Qt::CaseInsensitive ) == 0 )
{
// DescribeLayer is defined for WMS1.1.1/SLD1.0
// and in qgis-server WMS1.3.0 extension
try
{
QDomDocument doc = describeLayer();
mRequestHandler->setXmlResponse( doc );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
}
//GetLegendGraphic
else if ( request.compare( QLatin1String( "GetLegendGraphic" ), Qt::CaseInsensitive ) == 0 ||
request.compare( QLatin1String( "GetLegendGraphics" ), Qt::CaseInsensitive ) == 0 )
// GetLegendGraphics for compatibility with earlier QGIS versions
{
QImage* result = nullptr;
try
{
result = getLegendGraphics();
}
catch ( QgsMapServiceException& ex )
{
QgsMessageLog::logMessage( QStringLiteral( "Caught exception during GetLegendGraphic request" ) );
mRequestHandler->setServiceException( ex );
}
if ( result )
{
QgsMessageLog::logMessage( QStringLiteral( "Setting GetLegendGraphic response" ) );
//setting is the same for GetMap and GetLegendGraphic
mRequestHandler->setGetMapResponse( QStringLiteral( "WMS" ), result, getImageQuality() );
QgsMessageLog::logMessage( QStringLiteral( "Response sent" ) );
}
else
{
//do some error handling
QgsMessageLog::logMessage( QStringLiteral( "result image is 0" ) );
}
delete result;
}
//GetPrint
else if ( request.compare( QLatin1String( "GetPrint" ), Qt::CaseInsensitive ) == 0 )
{
QByteArray* printOutput = nullptr;
try
{
printOutput = getPrint( mRequestHandler->format() );
}
catch ( QgsMapServiceException& ex )
{
mRequestHandler->setServiceException( ex );
}
if ( printOutput )
{
mRequestHandler->setGetPrintResponse( printOutput );
}
delete printOutput;
}
else//unknown request
{
QgsMapServiceException e( QStringLiteral( "OperationNotSupported" ), "Operation " + request + " not supported" );
mRequestHandler->setServiceException( e );
}
cleanupAfterRequest();
}
void QgsWmsServer::appendFormats( QDomDocument &doc, QDomElement &elem, const QStringList &formats )
{
Q_FOREACH ( const QString& format, formats )
{
QDomElement formatElem = doc.createElement( QStringLiteral( "Format" )/*wms:Format*/ );
formatElem.appendChild( doc.createTextNode( format ) );
elem.appendChild( formatElem );
}
}
QDomDocument QgsWmsServer::getCapabilities( const QString& version, bool fullProjectInformation )
{
QgsMessageLog::logMessage( QStringLiteral( "Entering." ) );
QDomDocument doc;
QDomElement wmsCapabilitiesElement;
//Prepare url
QString hrefString;
if ( mConfigParser )
{
hrefString = mConfigParser->serviceUrl();
}
if ( hrefString.isEmpty() )
{
hrefString = serviceUrl();
}
//href needs to be a prefix
if ( !hrefString.endsWith( "?" ) && !hrefString.endsWith( "&" ) )
{
hrefString.append( hrefString.contains( "?" ) ? "&" : "?" );
}
if ( version == QLatin1String( "1.1.1" ) )
{
doc = QDomDocument( QStringLiteral( "WMT_MS_Capabilities SYSTEM 'http://schemas.opengis.net/wms/1.1.1/WMS_MS_Capabilities.dtd'" ) ); //WMS 1.1.1 needs DOCTYPE "SYSTEM http://schemas.opengis.net/wms/1.1.1/WMS_MS_Capabilities.dtd"
addXmlDeclaration( doc );
wmsCapabilitiesElement = doc.createElement( QStringLiteral( "WMT_MS_Capabilities" )/*wms:WMS_Capabilities*/ );
}
else // 1.3.0 as default
{
addXmlDeclaration( doc );
wmsCapabilitiesElement = doc.createElement( QStringLiteral( "WMS_Capabilities" )/*wms:WMS_Capabilities*/ );
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns" ), QStringLiteral( "http://www.opengis.net/wms" ) );
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns:sld" ), QStringLiteral( "http://www.opengis.net/sld" ) );
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns:qgs" ), QStringLiteral( "http://www.qgis.org/wms" ) );
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns:xsi" ), QStringLiteral( "http://www.w3.org/2001/XMLSchema-instance" ) );
QString schemaLocation = QStringLiteral( "http://www.opengis.net/wms" );
schemaLocation += QLatin1String( " http://schemas.opengis.net/wms/1.3.0/capabilities_1_3_0.xsd" );
schemaLocation += QLatin1String( " http://www.opengis.net/sld" );
schemaLocation += QLatin1String( " http://schemas.opengis.net/sld/1.1.0/sld_capabilities.xsd" );
schemaLocation += QLatin1String( " http://www.qgis.org/wms" );
if ( mConfigParser && mConfigParser->wmsInspireActivated() )
{
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns:inspire_common" ), QStringLiteral( "http://inspire.ec.europa.eu/schemas/common/1.0" ) );
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xmlns:inspire_vs" ), QStringLiteral( "http://inspire.ec.europa.eu/schemas/inspire_vs/1.0" ) );
schemaLocation += QLatin1String( " http://inspire.ec.europa.eu/schemas/inspire_vs/1.0" );
schemaLocation += QLatin1String( " http://inspire.ec.europa.eu/schemas/inspire_vs/1.0/inspire_vs.xsd" );
}
schemaLocation += " " + hrefString + "SERVICE=WMS&REQUEST=GetSchemaExtension";
wmsCapabilitiesElement.setAttribute( QStringLiteral( "xsi:schemaLocation" ), schemaLocation );
}
wmsCapabilitiesElement.setAttribute( QStringLiteral( "version" ), version );
doc.appendChild( wmsCapabilitiesElement );
//todo: add service capabilities
if ( mConfigParser )
{
mConfigParser->serviceCapabilities( wmsCapabilitiesElement, doc );
}
//wms:Capability element
QDomElement capabilityElement = doc.createElement( QStringLiteral( "Capability" )/*wms:Capability*/ );
wmsCapabilitiesElement.appendChild( capabilityElement );
//wms:Request element
QDomElement requestElement = doc.createElement( QStringLiteral( "Request" )/*wms:Request*/ );
capabilityElement.appendChild( requestElement );
QDomElement dcpTypeElement = doc.createElement( QStringLiteral( "DCPType" )/*wms:DCPType*/ );
QDomElement httpElement = doc.createElement( QStringLiteral( "HTTP" )/*wms:HTTP*/ );
dcpTypeElement.appendChild( httpElement );
QDomElement elem;
//wms:GetCapabilities
elem = doc.createElement( QStringLiteral( "GetCapabilities" )/*wms:GetCapabilities*/ );
appendFormats( doc, elem, QStringList() << ( version == QLatin1String( "1.1.1" ) ? "application/vnd.ogc.wms_xml" : "text/xml" ) );
elem.appendChild( dcpTypeElement );
requestElement.appendChild( elem );
// SOAP platform
//only give this information if it is not a WMS request to be in sync with the WMS capabilities schema
QMap<QString, QString>::const_iterator service_it = mParameters.constFind( QStringLiteral( "SERVICE" ) );
if ( service_it != mParameters.constEnd() && service_it.value().compare( QLatin1String( "WMS" ), Qt::CaseInsensitive ) != 0 )
{
QDomElement soapElement = doc.createElement( QStringLiteral( "SOAP" )/*wms:SOAP*/ );
httpElement.appendChild( soapElement );
QDomElement soapResourceElement = doc.createElement( QStringLiteral( "OnlineResource" )/*wms:OnlineResource*/ );
soapResourceElement.setAttribute( QStringLiteral( "xmlns:xlink" ), QStringLiteral( "http://www.w3.org/1999/xlink" ) );
soapResourceElement.setAttribute( QStringLiteral( "xlink:type" ), QStringLiteral( "simple" ) );
soapResourceElement.setAttribute( QStringLiteral( "xlink:href" ), hrefString );
soapElement.appendChild( soapResourceElement );
}
//only Get supported for the moment
QDomElement getElement = doc.createElement( QStringLiteral( "Get" )/*wms:Get*/ );
httpElement.appendChild( getElement );
QDomElement olResourceElement = doc.createElement( QStringLiteral( "OnlineResource" )/*wms:OnlineResource*/ );
olResourceElement.setAttribute( QStringLiteral( "xmlns:xlink" ), QStringLiteral( "http://www.w3.org/1999/xlink" ) );
olResourceElement.setAttribute( QStringLiteral( "xlink:type" ), QStringLiteral( "simple" ) );
olResourceElement.setAttribute( QStringLiteral( "xlink:href" ), hrefString );
getElement.appendChild( olResourceElement );
#if 0
// POST already used by SOAP
QDomElement postElement = doc.createElement( "post"/*wms:SOAP*/ );
httpElement.appendChild( postElement );
QDomElement postResourceElement = doc.createElement( "OnlineResource"/*wms:OnlineResource*/ );
postResourceElement.setAttribute( "xmlns:xlink", "http://www.w3.org/1999/xlink" );
postResourceElement.setAttribute( "xlink:type", "simple" );
postResourceElement.setAttribute( "xlink:href", "http://" + QString( getenv( "SERVER_NAME" ) ) + QString( getenv( "REQUEST_URI" ) ) );
postElement.appendChild( postResourceElement );
dcpTypeElement.appendChild( postElement );
#endif
//wms:GetMap
elem = doc.createElement( QStringLiteral( "GetMap" )/*wms:GetMap*/ );
appendFormats( doc, elem, QStringList() << QStringLiteral( "image/jpeg" ) << QStringLiteral( "image/png" ) << QStringLiteral( "image/png; mode=16bit" ) << QStringLiteral( "image/png; mode=8bit" ) << QStringLiteral( "image/png; mode=1bit" ) << QStringLiteral( "application/dxf" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetFeatureInfo
elem = doc.createElement( QStringLiteral( "GetFeatureInfo" ) );
appendFormats( doc, elem, QStringList() << QStringLiteral( "text/plain" ) << QStringLiteral( "text/html" ) << QStringLiteral( "text/xml" ) << QStringLiteral( "application/vnd.ogc.gml" ) << QStringLiteral( "application/vnd.ogc.gml/3.1.1" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetLegendGraphic
elem = doc.createElement(( version == QLatin1String( "1.1.1" ) ? "GetLegendGraphic" : "sld:GetLegendGraphic" )/*wms:GetLegendGraphic*/ );
appendFormats( doc, elem, QStringList() << QStringLiteral( "image/jpeg" ) << QStringLiteral( "image/png" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); // this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:DescribeLayer
elem = doc.createElement(( version == QLatin1String( "1.1.1" ) ? "DescribeLayer" : "sld:DescribeLayer" )/*wms:GetLegendGraphic*/ );
appendFormats( doc, elem, QStringList() << QStringLiteral( "text/xml" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); // this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
//wms:GetStyles
elem = doc.createElement(( version == QLatin1String( "1.1.1" ) ? "GetStyles" : "qgs:GetStyles" )/*wms:GetStyles*/ );
appendFormats( doc, elem, QStringList() << QStringLiteral( "text/xml" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
if ( fullProjectInformation ) //remove composer templates from GetCapabilities in the long term
{
//wms:GetPrint
elem = doc.createElement( QStringLiteral( "GetPrint" ) /*wms:GetPrint*/ );
appendFormats( doc, elem, QStringList() << QStringLiteral( "svg" ) << QStringLiteral( "png" ) << QStringLiteral( "pdf" ) );
elem.appendChild( dcpTypeElement.cloneNode().toElement() ); //this is the same as for 'GetCapabilities'
requestElement.appendChild( elem );
}
//Exception element is mandatory
elem = doc.createElement( QStringLiteral( "Exception" ) );
appendFormats( doc, elem, QStringList() << ( version == QLatin1String( "1.1.1" ) ? "application/vnd.ogc.se_xml" : "XML" ) );
capabilityElement.appendChild( elem );
//UserDefinedSymbolization element
if ( version == QLatin1String( "1.3.0" ) )
{
elem = doc.createElement( QStringLiteral( "sld:UserDefinedSymbolization" ) );
elem.setAttribute( QStringLiteral( "SupportSLD" ), QStringLiteral( "1" ) );
elem.setAttribute( QStringLiteral( "UserLayer" ), QStringLiteral( "0" ) );
elem.setAttribute( QStringLiteral( "UserStyle" ), QStringLiteral( "1" ) );
elem.setAttribute( QStringLiteral( "RemoteWFS" ), QStringLiteral( "0" ) );
elem.setAttribute( QStringLiteral( "InlineFeature" ), QStringLiteral( "0" ) );
elem.setAttribute( QStringLiteral( "RemoteWCS" ), QStringLiteral( "0" ) );
capabilityElement.appendChild( elem );
if ( mConfigParser && mConfigParser->wmsInspireActivated() )
{
mConfigParser->inspireCapabilities( capabilityElement, doc );
}
}
if ( mConfigParser && fullProjectInformation ) //remove composer templates from GetCapabilities in the long term
{
//Insert <ComposerTemplate> elements derived from wms:_ExtendedCapabilities
mConfigParser->printCapabilities( capabilityElement, doc );
}
if ( mConfigParser && fullProjectInformation )
{
//WFS layers
QStringList wfsLayers = mConfigParser->wfsLayerNames();
if ( !wfsLayers.isEmpty() )
{
QDomElement wfsLayersElem = doc.createElement( QStringLiteral( "WFSLayers" ) );
QStringList::const_iterator wfsIt = wfsLayers.constBegin();
for ( ; wfsIt != wfsLayers.constEnd(); ++wfsIt )
{
QDomElement wfsLayerElem = doc.createElement( QStringLiteral( "WFSLayer" ) );
wfsLayerElem.setAttribute( QStringLiteral( "name" ), *wfsIt );
wfsLayersElem.appendChild( wfsLayerElem );
}
capabilityElement.appendChild( wfsLayersElem );
}
}
//add the xml content for the individual layers/styles
QgsMessageLog::logMessage( QStringLiteral( "calling layersAndStylesCapabilities" ) );
if ( mConfigParser )
{
mConfigParser->layersAndStylesCapabilities( capabilityElement, doc, version, fullProjectInformation );
}
QgsMessageLog::logMessage( QStringLiteral( "layersAndStylesCapabilities returned" ) );
#if 0
//for debugging: save the document to disk
QFile capabilitiesFile( QDir::tempPath() + "/capabilities.txt" );
if ( capabilitiesFile.open( QIODevice::WriteOnly | QIODevice::Text ) )
{
QTextStream capabilitiesStream( &capabilitiesFile );
doc.save( capabilitiesStream, 4 );
}
#endif
return doc;
}
QDomDocument QgsWmsServer::getContext()
{
QDomDocument doc;
addXmlDeclaration( doc );
QDomElement owsContextElem = doc.createElement( QStringLiteral( "OWSContext" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns" ), QStringLiteral( "http://www.opengis.net/ows-context" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:ows-context" ), QStringLiteral( "http://www.opengis.net/ows-context" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:context" ), QStringLiteral( "http://www.opengis.net/context" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:ows" ), QStringLiteral( "http://www.opengis.net/ows" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:sld" ), QStringLiteral( "http://www.opengis.net/sld" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:ogc" ), QStringLiteral( "http://www.opengis.net/ogc" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:gml" ), QStringLiteral( "http://www.opengis.net/gml" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:kml" ), QStringLiteral( "http://www.opengis.net/kml/2.2" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:xlink" ), QStringLiteral( "http://www.w3.org/1999/xlink" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:ns9" ), QStringLiteral( "http://www.w3.org/2005/Atom" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:xal" ), QStringLiteral( "urn:oasis:names:tc:ciq:xsdschema:xAL:2.0" ) );
owsContextElem.setAttribute( QStringLiteral( "xmlns:ins" ), QStringLiteral( "http://www.inspire.org" ) );
owsContextElem.setAttribute( QStringLiteral( "version" ), QStringLiteral( "0.3.1" ) );
doc.appendChild( owsContextElem );
if ( mConfigParser )
{
//Prepare url
QString hrefString = mConfigParser->serviceUrl();
if ( hrefString.isEmpty() )
{
hrefString = serviceUrl();
}
mConfigParser->owsGeneralAndResourceList( owsContextElem, doc, hrefString );
}
return doc;
}
static QgsLayerTreeModelLegendNode* _findLegendNodeForRule( QgsLayerTreeModel* legendModel, const QString& rule )
{
Q_FOREACH ( QgsLayerTreeLayer* nodeLayer, legendModel->rootGroup()->findLayers() )
{
Q_FOREACH ( QgsLayerTreeModelLegendNode* legendNode, legendModel->layerLegendNodes( nodeLayer ) )
{
if ( legendNode->data( Qt::DisplayRole ).toString() == rule )
return legendNode;
}
}
return nullptr;
}
static QgsRectangle _parseBBOX( const QString &bboxStr, bool &ok )
{
ok = false;
QStringList lst = bboxStr.split( QStringLiteral( "," ) );
if ( lst.count() != 4 )
return QgsRectangle();
double d[4];
for ( int i = 0; i < 4; i++ )
{
bool ok;
lst[i].replace( QLatin1String( " " ), QLatin1String( "+" ) );
d[i] = lst[i].toDouble( &ok );
if ( !ok )
return QgsRectangle();
}
ok = true;
if ( d[2] <= d[0] || d[3] <= d[1] )
{
throw QgsMapServiceException( "InvalidParameterValue", "BBOX is empty" );
}
return QgsRectangle( d[0], d[1], d[2], d[3] );
}
QImage* QgsWmsServer::getLegendGraphics()
{
if ( !mConfigParser )
{
throw QgsException( QStringLiteral( "No config parser" ) );
}
if ( !mParameters.contains( QStringLiteral( "LAYER" ) ) && !mParameters.contains( QStringLiteral( "LAYERS" ) ) )
{
throw QgsMapServiceException( QStringLiteral( "LayerNotSpecified" ), QStringLiteral( "LAYER is mandatory for GetLegendGraphic operation" ) );
}
if ( !mParameters.contains( QStringLiteral( "FORMAT" ) ) )
{
throw QgsMapServiceException( QStringLiteral( "FormatNotSpecified" ), QStringLiteral( "FORMAT is mandatory for GetLegendGraphic operation" ) );
}
bool contentBasedLegend = false;
QgsRectangle contentBasedLegendExtent;
if ( mParameters.contains( QStringLiteral( "BBOX" ) ) )
{
contentBasedLegend = true;
bool bboxOk;
contentBasedLegendExtent = _parseBBOX( mParameters[QStringLiteral( "BBOX" )], bboxOk );
if ( !bboxOk || contentBasedLegendExtent.isEmpty() )
throw QgsMapServiceException( QStringLiteral( "InvalidParameterValue" ), QStringLiteral( "Invalid BBOX parameter" ) );
if ( mParameters.contains( QStringLiteral( "RULE" ) ) )
throw QgsMapServiceException( QStringLiteral( "InvalidParameterValue" ), QStringLiteral( "BBOX parameter cannot be combined with RULE" ) );
}
QStringList layersList, stylesList;
readLayersAndStyles( layersList, stylesList );
if ( layersList.size() < 1 )
{
return nullptr;
}
//scale
double scaleDenominator = -1;
QMap<QString, QString>::const_iterator scaleIt = mParameters.constFind( QStringLiteral( "SCALE" ) );
if ( scaleIt != mParameters.constEnd() )
{
bool conversionSuccess;
double scaleValue = scaleIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
scaleDenominator = scaleValue;
}
}
QgsCoordinateReferenceSystem dummyCRS;
QStringList layerIds = layerSet( layersList, stylesList, dummyCRS, scaleDenominator );
if ( layerIds.size() < 1 )
{
return nullptr;
}
//get icon size, spaces between legend items and font from config parser
double boxSpace, layerSpace, layerTitleSpace, symbolSpace, iconLabelSpace, symbolWidth, symbolHeight;
QFont layerFont, itemFont;
QColor layerFontColor, itemFontColor;
legendParameters( boxSpace, layerSpace, layerTitleSpace, symbolSpace,
iconLabelSpace, symbolWidth, symbolHeight, layerFont, itemFont, layerFontColor, itemFontColor );
QString rule;
int ruleSymbolWidth = 0, ruleSymbolHeight = 0;
QMap<QString, QString>::const_iterator ruleIt = mParameters.constFind( QStringLiteral( "RULE" ) );
if ( ruleIt != mParameters.constEnd() )
{
rule = ruleIt.value();
QMap<QString, QString>::const_iterator widthIt = mParameters.constFind( QStringLiteral( "WIDTH" ) );
if ( widthIt != mParameters.constEnd() )
{
bool conversionSuccess;
double width = widthIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
ruleSymbolWidth = width;
}
}
QMap<QString, QString>::const_iterator heightIt = mParameters.constFind( QStringLiteral( "HEIGHT" ) );
if ( heightIt != mParameters.constEnd() )
{
bool conversionSuccess;
double width = heightIt.value().toDouble( &conversionSuccess );
if ( conversionSuccess )
{
ruleSymbolHeight = width;
}
}
}
// Checks showFeatureCount parameter
bool showFeatureCount = false;
if ( mParameters.contains( QStringLiteral( "SHOWFEATURECOUNT" ) ) )
showFeatureCount = QVariant( mParameters[ QStringLiteral( "SHOWFEATURECOUNT" )] ).toBool();
// Create the layer tree root
QgsLayerTreeGroup rootGroup;
// Store layers' name to reset them
QMap<QString, QString> layerNameMap;
// Create tree layer node for each layer
Q_FOREACH ( const QString& layerId, layerIds )
{
// get layer
QgsMapLayer *ml = QgsProject::instance()->mapLayer( layerId );
// create tree layer node
QgsLayerTreeLayer *layer = rootGroup.addLayer( ml );
// store the layer's name
layerNameMap.insert( layerId, ml->name() );
// set layer name with layer's title to have it in legend
if ( !ml->title().isEmpty() )
layer->setName( ml->title() );
// set show feature count
if ( showFeatureCount )
layer->setCustomProperty( QStringLiteral( "showFeatureCount" ), showFeatureCount );
}
QgsLayerTreeModel legendModel( &rootGroup );
if ( scaleDenominator > 0 )
legendModel.setLegendFilterByScale( scaleDenominator );
QgsMapSettings contentBasedMapSettings;
if ( contentBasedLegend )
{
HitTest hitTest;
getMap( contentBasedMapSettings, &hitTest );
Q_FOREACH ( QgsLayerTreeNode* node, rootGroup.children() )
{
Q_ASSERT( QgsLayerTree::isLayer( node ) );
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
QgsVectorLayer* vl = qobject_cast<QgsVectorLayer*>( nodeLayer->layer() );
if ( !vl || !vl->renderer() )
continue;
const SymbolSet& usedSymbols = hitTest[vl];
QList<int> order;
int i = 0;
Q_FOREACH ( const QgsLegendSymbolItem& legendItem, vl->renderer()->legendSymbolItemsV2() )
{
if ( usedSymbols.contains( legendItem.legacyRuleKey() ) )
order.append( i );
++i;
}
// either remove the whole layer or just filter out some items
if ( order.isEmpty() )
rootGroup.removeChildNode( nodeLayer );
else
{
QgsMapLayerLegendUtils::setLegendNodeOrder( nodeLayer, order );
legendModel.refreshLayerLegend( nodeLayer );
}
}
}
// find out DPI
QImage* tmpImage = createImage( 1, 1, false );
if ( !tmpImage )
return nullptr;
qreal dpmm = tmpImage->dotsPerMeterX() / 1000.0;
delete tmpImage;
// setup legend configuration
QgsLegendSettings legendSettings;
legendSettings.setTitle( QString() );
legendSettings.setBoxSpace( boxSpace );
legendSettings.rstyle( QgsLegendStyle::Subgroup ).setMargin( QgsLegendStyle::Top, layerSpace );
// TODO: not available: layer title space
legendSettings.rstyle( QgsLegendStyle::Symbol ).setMargin( QgsLegendStyle::Top, symbolSpace );
legendSettings.rstyle( QgsLegendStyle::SymbolLabel ).setMargin( QgsLegendStyle::Left, iconLabelSpace );
legendSettings.setSymbolSize( QSizeF( symbolWidth, symbolHeight ) );
legendSettings.rstyle( QgsLegendStyle::Subgroup ).setFont( layerFont );
legendSettings.rstyle( QgsLegendStyle::SymbolLabel ).setFont( itemFont );
// TODO: not available: layer font color
legendSettings.setFontColor( itemFontColor );
if ( contentBasedLegend )
{
legendSettings.setMapScale( contentBasedMapSettings.scale() );
}
if ( !rule.isEmpty() )
{
//create second image with the right dimensions
QImage* paintImage = createImage( ruleSymbolWidth, ruleSymbolHeight, false );
//go through the items a second time for painting
QPainter p( paintImage );
p.setRenderHint( QPainter::Antialiasing, true );
p.scale( dpmm, dpmm );
QgsLayerTreeModelLegendNode* legendNode = _findLegendNodeForRule( &legendModel, rule );
if ( legendNode )
{
QgsLayerTreeModelLegendNode::ItemContext ctx;
ctx.painter = &p;
ctx.labelXOffset = 0;
ctx.point = QPointF();
double itemHeight = ruleSymbolHeight / dpmm;
legendNode->drawSymbol( legendSettings, &ctx, itemHeight );
}
QgsProject::instance()->removeAllMapLayers();
return paintImage;
}
QList<QgsLayerTreeNode*> rootChildren = rootGroup.children();
Q_FOREACH ( QgsLayerTreeNode* node, rootChildren )
{
if ( QgsLayerTree::isLayer( node ) )
{
QgsLayerTreeLayer* nodeLayer = QgsLayerTree::toLayer( node );
#ifdef HAVE_SERVER_PYTHON_PLUGINS
if ( !mAccessControl->layerReadPermission( nodeLayer->layer() ) )
{
throw QgsMapServiceException( QStringLiteral( "Security" ), "You are not allowed to access to the layer: " + nodeLayer->layer()->name() );
}
#endif
// layer titles - hidden or not
QgsLegendRenderer::setNodeLegendStyle( nodeLayer, mDrawLegendLayerLabel ? QgsLegendStyle::Subgroup : QgsLegendStyle::Hidden );
// rule item titles
if ( !mDrawLegendItemLabel )
{
Q_FOREACH ( QgsLayerTreeModelLegendNode* legendNode, legendModel.layerLegendNodes( nodeLayer ) )
{
legendNode->setUserLabel( QStringLiteral( " " ) ); // empty string = no override, so let's use one space
}
}
else if ( !mDrawLegendLayerLabel )
{
Q_FOREACH ( QgsLayerTreeModelLegendNode* legendNode, legendModel.layerLegendNodes( nodeLayer ) )
{
if ( legendNode->isEmbeddedInParent() )
legendNode->setEmbeddedInParent( false );
}
}
}
}
QgsLegendRenderer legendRenderer( &legendModel, legendSettings );
QSizeF minSize = legendRenderer.minimumSize();
QSize s( minSize.width() * dpmm, minSize.height() * dpmm );
QImage* paintImage = createImage( s.width(), s.height(), false );
QPainter p( paintImage );
p.setRenderHint( QPainter::Antialiasing, true );
p.scale( dpmm, dpmm );
legendRenderer.drawLegend( &p );
p.end();
// reset layers' name
Q_FOREACH ( const QString& layerId, layerIds )
{
QgsMapLayer *ml = QgsProject::instance()->mapLayer( layerId );
ml->setName( layerNameMap[ layerId ] );
}
// clear map layer registry
QgsProject::instance()->removeAllMapLayers();
return paintImage;
}