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[Server] WMS GetStyles (and GetStyle) refactoring

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rldhont committed May 31, 2017
1 parent ada8715 commit bb789e99b2ed2a6702613ac8a1c82d394fc7b2ac
@@ -14,7 +14,6 @@ SET (wms_SRCS
qgswmsgetmap.cpp
qgswmsgetprint.cpp
qgswmsgetschemaextension.cpp
qgswmsgetstyle.cpp
qgswmsgetstyles.cpp
qgsmaprendererjobproxy.cpp
qgsmediancut.cpp
@@ -24,7 +24,6 @@
#include "qgsdxfwriter.h"
#include "qgswmsgetcapabilities.h"
#include "qgswmsgetmap.h"
#include "qgswmsgetstyle.h"
#include "qgswmsgetstyles.h"
#include "qgswmsgetcontext.h"
#include "qgswmsgetschemaextension.h"
@@ -118,11 +117,11 @@ namespace QgsWms
}
else if ( QSTR_COMPARE( req, "GetStyle" ) )
{
writeGetStyle( mServerIface, versionString, request, response );
writeGetStyle( mServerIface, project, versionString, request, response );
}
else if ( QSTR_COMPARE( req, "GetStyles" ) )
{
writeGetStyles( mServerIface, versionString, request, response );
writeGetStyles( mServerIface, project, versionString, request, response );
}
else if ( QSTR_COMPARE( req, "DescribeLayer" ) )
{

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@@ -20,28 +20,36 @@
***************************************************************************/
#include "qgswmsutils.h"
#include "qgswmsgetstyles.h"
#include "qgsserverprojectutils.h"

#include "qgsrenderer.h"
#include "qgsvectorlayer.h"
#include "qgsmaplayerstylemanager.h"

namespace QgsWms
{

void writeGetStyles( QgsServerInterface *serverIface, const QString &version,
namespace
{
QDomDocument getStyledLayerDescriptorDocument( QgsServerInterface *serverIface, const QgsProject *project,
QStringList &layerList );
}

void writeGetStyles( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request, QgsServerResponse &response )
{
QDomDocument doc = getStyles( serverIface, version, request );
QDomDocument doc = getStyles( serverIface, project, version, request );
response.setHeader( QStringLiteral( "Content-Type" ), QStringLiteral( "text/xml; charset=utf-8" ) );
response.write( doc.toByteArray() );
}

QDomDocument getStyles( QgsServerInterface *serverIface, const QString &version,
QDomDocument getStyles( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request )
{
Q_UNUSED( version );

QgsWmsConfigParser *configParser = getConfigParser( serverIface );
QgsServerRequest::Parameters parameters = request.parameters();

QDomDocument doc;

QString layersName = parameters.value( "LAYERS" );

if ( layersName.isEmpty() )
@@ -50,14 +58,135 @@ namespace QgsWms
QStringLiteral( "Layers is mandatory for GetStyles operation" ) );
}

QStringList layersList = layersName.split( QStringLiteral( "," ), QString::SkipEmptyParts );
if ( layersList.size() < 1 )
QStringList layerList = layersName.split( ',', QString::SkipEmptyParts );
if ( layerList.isEmpty() )
{
throw QgsBadRequestException( QStringLiteral( "LayerNotSpecified" ),
QStringLiteral( "Layers is mandatory for GetStyles operation" ) );
}

return configParser->getStyles( layersList );
return getStyledLayerDescriptorDocument( serverIface, project, layerList );
}

//GetStyle for compatibility with earlier QGIS versions
void writeGetStyle( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request, QgsServerResponse &response )
{
QDomDocument doc = getStyle( serverIface, project, version, request );
response.setHeader( QStringLiteral( "Content-Type" ), QStringLiteral( "text/xml; charset=utf-8" ) );
response.write( doc.toByteArray() );
}

QDomDocument getStyle( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request )
{
Q_UNUSED( version );

QgsServerRequest::Parameters parameters = request.parameters();

QDomDocument doc;

QString styleName = parameters.value( QStringLiteral( "STYLE" ) );
QString layerName = parameters.value( QStringLiteral( "LAYER" ) );

if ( styleName.isEmpty() )
{
throw QgsServiceException( QStringLiteral( "StyleNotSpecified" ),
QStringLiteral( "Style is mandatory for GetStyle operation" ), 400 );
}

if ( layerName.isEmpty() )
{
throw QgsServiceException( QStringLiteral( "LayerNotSpecified" ),
QStringLiteral( "Layer is mandatory for GetStyle operation" ), 400 );
}

QStringList layerList;
layerList.append( layerName );
return getStyledLayerDescriptorDocument( serverIface, project, layerList );
}

namespace
{
QDomDocument getStyledLayerDescriptorDocument( QgsServerInterface *serverIface, const QgsProject *project,
QStringList &layerList )
{
QDomDocument myDocument = QDomDocument();

QDomNode header = myDocument.createProcessingInstruction( QStringLiteral( "xml" ), QStringLiteral( "version=\"1.0\" encoding=\"UTF-8\"" ) );
myDocument.appendChild( header );

// Create the root element
QDomElement root = myDocument.createElementNS( QStringLiteral( "http://www.opengis.net/sld" ), QStringLiteral( "StyledLayerDescriptor" ) );
root.setAttribute( QStringLiteral( "version" ), QStringLiteral( "1.1.0" ) );
root.setAttribute( QStringLiteral( "xsi:schemaLocation" ), QStringLiteral( "http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/StyledLayerDescriptor.xsd" ) );
root.setAttribute( QStringLiteral( "xmlns:ogc" ), QStringLiteral( "http://www.opengis.net/ogc" ) );
root.setAttribute( QStringLiteral( "xmlns:se" ), QStringLiteral( "http://www.opengis.net/se" ) );
root.setAttribute( QStringLiteral( "xmlns:xlink" ), QStringLiteral( "http://www.w3.org/1999/xlink" ) );
root.setAttribute( QStringLiteral( "xmlns:xsi" ), QStringLiteral( "http://www.w3.org/2001/XMLSchema-instance" ) );
myDocument.appendChild( root );

// access control
QgsAccessControl *accessControl = serverIface->accessControls();
// Use layer ids
bool useLayerIds = QgsServerProjectUtils::wmsUseLayerIds( *project );
// WMS restricted layers
QStringList restrictedLayers = QgsServerProjectUtils::wmsRestrictedLayers( *project );

Q_FOREACH ( QgsMapLayer *layer, project->mapLayers() )
{
QString name = layer->name();
if ( useLayerIds )
name = layer->id();
else if ( !layer->shortName().isEmpty() )
name = layer->shortName();

if ( !layerList.contains( name ) )
{
continue;
}

//unpublished layer
if ( restrictedLayers.contains( layer->name() ) )
{
throw QgsSecurityException( QStringLiteral( "You are not allowed to access to this layer" ) );
}

if ( accessControl && !accessControl->layerReadPermission( layer ) )
{
throw QgsSecurityException( QStringLiteral( "You are not allowed to access to this layer" ) );
}

// Create the NamedLayer element
QDomElement namedLayerNode = myDocument.createElement( QStringLiteral( "NamedLayer" ) );
root.appendChild( namedLayerNode );

// store the Name element
QDomElement nameNode = myDocument.createElement( QStringLiteral( "se:Name" ) );
nameNode.appendChild( myDocument.createTextNode( name ) );
namedLayerNode.appendChild( nameNode );

if ( layer->type() == QgsMapLayer::VectorLayer )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
if ( vlayer->hasGeometryType() )
{
QString currentStyle = vlayer->styleManager()->currentStyle();
Q_FOREACH ( QString styleName, vlayer->styleManager()->styles() )
{
vlayer->styleManager()->setCurrentStyle( styleName );
if ( styleName.isEmpty() )
styleName = EMPTY_STYLE_NAME;
QDomElement styleElem = vlayer->renderer()->writeSld( myDocument, styleName );
namedLayerNode.appendChild( styleElem );
}
vlayer->styleManager()->setCurrentStyle( currentStyle );
}
}
}

return myDocument;
}
}


@@ -24,16 +24,28 @@ namespace QgsWms

/** Output GetStyles response
*/
void writeGetStyles( QgsServerInterface *serverIface, const QString &version,
void writeGetStyles( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request, QgsServerResponse &response );


/**
* Returns an SLD file with the styles of the requested layers. Exception is raised in case of troubles :-)
*/
QDomDocument getStyles( QgsServerInterface *serverIface, const QString &version,
QDomDocument getStyles( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request );

//GetStyle for compatibility with earlier QGIS versions

/** Output GetStyle response
*/
void writeGetStyle( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request, QgsServerResponse &response );

/** Returns an SLD file with the style of the requested layer
*/
QDomDocument getStyle( QgsServerInterface *serverIface, const QgsProject *project, const QString &version,
const QgsServerRequest &request );



} // samespace QgsWms

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