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[Server] WMS DescribeLayer refactoring

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rldhont committed May 26, 2017
1 parent 5b78297 commit 8a0261c94e419a633b436cee4194bdd0739abb2f
Showing with 98 additions and 2 deletions.
  1. +98 −2 src/server/services/wms/qgswmsdescribelayer.cpp
@@ -40,7 +40,6 @@ namespace QgsWms
Q_UNUSED( version );

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

if ( !parameters.contains( QStringLiteral( "SLD_VERSION" ) ) )
{
@@ -64,6 +63,24 @@ namespace QgsWms
{
throw QgsServiceException( QStringLiteral( "InvalidParameterValue" ), QStringLiteral( "Layers is empty" ), 400 );
}
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( "DescribeLayerResponse" ) );
root.setAttribute( QStringLiteral( "xsi:schemaLocation" ), QStringLiteral( "http://www.opengis.net/sld http://schemas.opengis.net/sld/1.1.0/DescribeLayer.xsd" ) );
root.setAttribute( QStringLiteral( "xmlns:ows" ), QStringLiteral( "http://www.opengis.net/ows" ) );
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 );

// store the Version element
QDomElement versionNode = myDocument.createElement( QStringLiteral( "Version" ) );
versionNode.appendChild( myDocument.createTextNode( QStringLiteral( "1.1.0" ) ) );
root.appendChild( versionNode );

// get the wms service url defined in project or keep the one from the
// request url
@@ -85,7 +102,86 @@ namespace QgsWms
wcsHrefString = wmsHrefString;
}

return configParser->describeLayer( layersList, wfsHrefString, wcsHrefString );
// access control
QgsAccessControl *accessControl = serverIface->accessControls();
// Use layer ids
bool useLayerIds = QgsServerProjectUtils::wmsUseLayerIds( *project );
// WMS restricted layers
QStringList restrictedLayers = QgsServerProjectUtils::wmsRestrictedLayers( *project );
// WFS layers
QStringList wfsLayerIds = QgsServerProjectUtils::wfsLayerIds( *project );
// WCS layers
QStringList wcsLayerIds = QgsServerProjectUtils::wcsLayerIds( *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 ( !layersList.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 layerNode = myDocument.createElement( QStringLiteral( "LayerDescription" ) );
root.appendChild( layerNode );

// store the owsType element
QDomElement typeNode = myDocument.createElement( QStringLiteral( "owsType" ) );
// store the se:OnlineResource element
QDomElement oResNode = myDocument.createElement( QStringLiteral( "se:OnlineResource" ) );
oResNode.setAttribute( QStringLiteral( "xlink:type" ), QStringLiteral( "simple" ) );
// store the TypeName element
QDomElement nameNode = myDocument.createElement( QStringLiteral( "TypeName" ) );
if ( layer->type() == QgsMapLayer::VectorLayer )
{
typeNode.appendChild( myDocument.createTextNode( QStringLiteral( "wfs" ) ) );

if ( wfsLayerIds.indexOf( layer->id() ) != -1 )
{
oResNode.setAttribute( QStringLiteral( "xlink:href" ), wfsHrefString );
}

// store the se:FeatureTypeName element
QDomElement typeNameNode = myDocument.createElement( QStringLiteral( "se:FeatureTypeName" ) );
typeNameNode.appendChild( myDocument.createTextNode( name ) );
nameNode.appendChild( typeNameNode );
}
else if ( layer->type() == QgsMapLayer::RasterLayer )
{
typeNode.appendChild( myDocument.createTextNode( QStringLiteral( "wcs" ) ) );

if ( wcsLayerIds.indexOf( layer->id() ) != -1 )
{
oResNode.setAttribute( QStringLiteral( "xlink:href" ), wcsHrefString );
}

// store the se:CoverageTypeName element
QDomElement typeNameNode = myDocument.createElement( QStringLiteral( "se:CoverageTypeName" ) );
typeNameNode.appendChild( myDocument.createTextNode( name ) );
nameNode.appendChild( typeNameNode );
}
layerNode.appendChild( typeNode );
layerNode.appendChild( oResNode );
layerNode.appendChild( nameNode );
}

return myDocument;
}

} // samespace QgsWms

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