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qgswmscapabilities.cpp
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qgswmscapabilities.cpp
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/***************************************************************************
qgswmscapabilities.cpp
---------------------
begin : January 2014
copyright : (C) 2014 by Martin Dobias
email : wonder dot sk at gmail dot com
***************************************************************************
* *
* 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 "qgswmscapabilities.h"
#include "qgswmsprovider.h"
#include <QFile>
#include <QDir>
#include <QNetworkCacheMetaData>
#include <QSettings>
#include "qgscoordinatetransform.h"
#include "qgsdatasourceuri.h"
#include "qgslogger.h"
#include "qgsmessagelog.h"
#include "qgsnetworkaccessmanager.h"
#include "qgsunittypes.h"
#include "qgscsexception.h"
#include "qgsapplication.h"
// %%% copied from qgswmsprovider.cpp
static QString DEFAULT_LATLON_CRS = QStringLiteral( "CRS:84" );
bool QgsWmsSettings::parseUri( const QString& uriString )
{
QgsDebugMsg( "uriString = " + uriString );
QgsDataSourceUri uri;
uri.setEncodedUri( uriString );
mXyz = false; // assume WMS / WMTS
if ( uri.param( QStringLiteral( "type" ) ) == QLatin1String( "xyz" ) )
{
// for XYZ tiles most of the things do not apply
mTiled = true;
mXyz = true;
mTileDimensionValues.clear();
mTileMatrixSetId = QStringLiteral( "tms0" );
mMaxWidth = 0;
mMaxHeight = 0;
mHttpUri = uri.param( QStringLiteral( "url" ) );
mBaseUrl = mHttpUri;
mAuth.mUserName.clear();
mAuth.mPassword.clear();
mAuth.mReferer.clear();
mAuth.mAuthCfg.clear();
mIgnoreGetMapUrl = false;
mIgnoreGetFeatureInfoUrl = false;
mSmoothPixmapTransform = true;
mDpiMode = DpiNone; // does not matter what we set here
mActiveSubLayers = QStringList( QStringLiteral( "xyz" ) ); // just a placeholder to have one sub-layer
mActiveSubStyles = QStringList( QStringLiteral( "xyz" ) ); // just a placeholder to have one sub-style
mActiveSubLayerVisibility.clear();
mFeatureCount = 0;
mImageMimeType.clear();
mCrsId = QStringLiteral( "EPSG:3857" );
mEnableContextualLegend = false;
return true;
}
mTiled = false;
mTileDimensionValues.clear();
mHttpUri = uri.param( QStringLiteral( "url" ) );
mBaseUrl = QgsWmsProvider::prepareUri( mHttpUri ); // must set here, setImageCrs is using that
QgsDebugMsg( "mBaseUrl = " + mBaseUrl );
mIgnoreGetMapUrl = uri.hasParam( QStringLiteral( "IgnoreGetMapUrl" ) );
mIgnoreGetFeatureInfoUrl = uri.hasParam( QStringLiteral( "IgnoreGetFeatureInfoUrl" ) );
mParserSettings.ignoreAxisOrientation = uri.hasParam( QStringLiteral( "IgnoreAxisOrientation" ) ); // must be before parsing!
mParserSettings.invertAxisOrientation = uri.hasParam( QStringLiteral( "InvertAxisOrientation" ) ); // must be before parsing!
mSmoothPixmapTransform = uri.hasParam( QStringLiteral( "SmoothPixmapTransform" ) );
mDpiMode = uri.hasParam( QStringLiteral( "dpiMode" ) ) ? static_cast< QgsWmsDpiMode >( uri.param( QStringLiteral( "dpiMode" ) ).toInt() ) : DpiAll;
mAuth.mUserName = uri.param( QStringLiteral( "username" ) );
QgsDebugMsg( "set username to " + mAuth.mUserName );
mAuth.mPassword = uri.param( QStringLiteral( "password" ) );
QgsDebugMsg( "set password to " + mAuth.mPassword );
if ( uri.hasParam( QStringLiteral( "authcfg" ) ) )
{
mAuth.mAuthCfg = uri.param( QStringLiteral( "authcfg" ) );
}
QgsDebugMsg( "set authcfg to " + mAuth.mAuthCfg );
mAuth.mReferer = uri.param( QStringLiteral( "referer" ) );
QgsDebugMsg( "set referer to " + mAuth.mReferer );
mActiveSubLayers = uri.params( QStringLiteral( "layers" ) );
mActiveSubStyles = uri.params( QStringLiteral( "styles" ) );
QgsDebugMsg( "Entering: layers:" + mActiveSubLayers.join( ", " ) + ", styles:" + mActiveSubStyles.join( ", " ) );
mImageMimeType = uri.param( QStringLiteral( "format" ) );
QgsDebugMsg( "Setting image encoding to " + mImageMimeType + '.' );
mMaxWidth = 0;
mMaxHeight = 0;
if ( uri.hasParam( QStringLiteral( "maxWidth" ) ) && uri.hasParam( QStringLiteral( "maxHeight" ) ) )
{
mMaxWidth = uri.param( QStringLiteral( "maxWidth" ) ).toInt();
mMaxHeight = uri.param( QStringLiteral( "maxHeight" ) ).toInt();
}
mStepWidth = 2000;
mStepHeight = 2000;
if ( uri.hasParam( QStringLiteral( "stepWidth" ) ) && uri.hasParam( QStringLiteral( "stepHeight" ) ) )
{
mStepWidth = uri.param( QStringLiteral( "stepWidth" ) ).toInt();
mStepHeight = uri.param( QStringLiteral( "stepHeight" ) ).toInt();
}
if ( uri.hasParam( QStringLiteral( "tileMatrixSet" ) ) )
{
mTiled = true;
// tileMatrixSet may be empty if URI was converted from < 1.9 project file URI
// in that case it means that the source is WMS-C
mTileMatrixSetId = uri.param( QStringLiteral( "tileMatrixSet" ) );
}
if ( uri.hasParam( QStringLiteral( "tileDimensions" ) ) )
{
mTiled = true;
Q_FOREACH ( const QString& param, uri.param( "tileDimensions" ).split( ';' ) )
{
QStringList kv = param.split( '=' );
if ( kv.size() == 1 )
{
mTileDimensionValues.insert( kv[0], QString::null );
}
else if ( kv.size() == 2 )
{
mTileDimensionValues.insert( kv[0], kv[1] );
}
else
{
QgsDebugMsg( QString( "skipped dimension %1" ).arg( param ) );
}
}
}
mCrsId = uri.param( QStringLiteral( "crs" ) );
mEnableContextualLegend = uri.param( QStringLiteral( "contextualWMSLegend" ) ).toInt();
QgsDebugMsg( QString( "Contextual legend: %1" ).arg( mEnableContextualLegend ) );
mFeatureCount = uri.param( QStringLiteral( "featureCount" ) ).toInt(); // default to 0
return true;
}
// ----------------------
QgsWmsCapabilities::QgsWmsCapabilities()
: mValid( false )
, mLayerCount( -1 )
, mCapabilities()
{
}
bool QgsWmsCapabilities::parseResponse( const QByteArray& response, QgsWmsParserSettings settings )
{
mParserSettings = settings;
mValid = false;
if ( response.isEmpty() )
{
if ( mError.isEmpty() )
{
mErrorFormat = QStringLiteral( "text/plain" );
mError = QObject::tr( "empty capabilities document" );
}
QgsDebugMsg( "response is empty" );
return false;
}
if ( response.startsWith( "<html>" ) ||
response.startsWith( "<HTML>" ) )
{
mErrorFormat = QStringLiteral( "text/html" );
mError = response;
QgsDebugMsg( "starts with <html>" );
return false;
}
QgsDebugMsg( "Converting to Dom." );
bool domOK;
domOK = parseCapabilitiesDom( response, mCapabilities );
if ( !domOK )
{
// We had an Dom exception -
// mErrorCaption and mError are pre-filled by parseCapabilitiesDom
// TODO[MD] mError += QObject::tr( "\nTried URL: %1" ).arg( url );
QgsDebugMsg( "!domOK: " + mError );
return false;
}
// get identify formats
Q_FOREACH ( const QString& f, mCapabilities.capability.request.getFeatureInfo.format )
{
// Don't use mSupportedGetFeatureFormats, there are too many possibilities
QgsDebugMsg( "supported format = " + f );
// 1.0: MIME - server shall choose format, we presume it to be plain text
// GML.1, GML.2, or GML.3
// 1.1.0, 1.3.0 - mime types, GML should use application/vnd.ogc.gml
// but in UMN Mapserver it may be also OUTPUTFORMAT, e.g. OGRGML
QgsRaster::IdentifyFormat format = QgsRaster::IdentifyFormatUndefined;
if ( f == QLatin1String( "MIME" ) )
format = QgsRaster::IdentifyFormatText; // 1.0
else if ( f == QLatin1String( "text/plain" ) )
format = QgsRaster::IdentifyFormatText;
else if ( f == QLatin1String( "text/html" ) )
format = QgsRaster::IdentifyFormatHtml;
else if ( f.startsWith( QLatin1String( "GML." ) ) )
format = QgsRaster::IdentifyFormatFeature; // 1.0
else if ( f == QLatin1String( "application/vnd.ogc.gml" ) )
format = QgsRaster::IdentifyFormatFeature;
else if ( f == QLatin1String( "application/json" ) )
format = QgsRaster::IdentifyFormatFeature;
else if ( f.contains( QLatin1String( "gml" ), Qt::CaseInsensitive ) )
format = QgsRaster::IdentifyFormatFeature;
mIdentifyFormats.insert( format, f );
}
QgsDebugMsg( "exiting." );
mValid = mError.isEmpty();
return mValid;
}
bool QgsWmsCapabilities::parseCapabilitiesDom( QByteArray const &xml, QgsWmsCapabilitiesProperty& capabilitiesProperty )
{
#ifdef QGISDEBUG
QFile file( QDir::tempPath() + "/qgis-wmsprovider-capabilities.xml" );
if ( file.open( QIODevice::WriteOnly | QIODevice::Truncate ) )
{
file.write( xml );
file.close();
}
#endif
// Convert completed document into a Dom
QDomDocument capabilitiesDom;
QString errorMsg;
int errorLine;
int errorColumn;
bool contentSuccess = capabilitiesDom.setContent( xml, false, &errorMsg, &errorLine, &errorColumn );
if ( !contentSuccess )
{
mErrorCaption = QObject::tr( "Dom Exception" );
mErrorFormat = QStringLiteral( "text/plain" );
mError = QObject::tr( "Could not get WMS capabilities: %1 at line %2 column %3\nThis is probably due to an incorrect WMS Server URL.\nResponse was:\n\n%4" )
.arg( errorMsg )
.arg( errorLine )
.arg( errorColumn )
.arg( QString( xml ) );
QgsLogger::debug( "Dom Exception: " + mError );
return false;
}
QDomElement docElem = capabilitiesDom.documentElement();
// Assert that the DTD is what we expected (i.e. a WMS Capabilities document)
QgsDebugMsg( "testing tagName " + docElem.tagName() );
if (
docElem.tagName() != QLatin1String( "WMS_Capabilities" ) && // (1.3 vintage)
docElem.tagName() != QLatin1String( "WMT_MS_Capabilities" ) && // (1.1.1 vintage)
docElem.tagName() != QLatin1String( "Capabilities" ) // WMTS
)
{
mErrorCaption = QObject::tr( "Dom Exception" );
mErrorFormat = QStringLiteral( "text/plain" );
mError = QObject::tr( "Could not get WMS capabilities in the expected format (DTD): no %1 or %2 found.\nThis might be due to an incorrect WMS Server URL.\nTag:%3\nResponse was:\n%4" )
.arg( QStringLiteral( "WMS_Capabilities" ),
QStringLiteral( "WMT_MS_Capabilities" ),
docElem.tagName(),
QString( xml ) );
QgsLogger::debug( "Dom Exception: " + mError );
return false;
}
capabilitiesProperty.version = docElem.attribute( QStringLiteral( "version" ) );
// Start walking through XML.
QDomNode n = docElem.firstChild();
while ( !n.isNull() )
{
QDomElement e = n.toElement(); // try to convert the node to an element.
if ( !e.isNull() )
{
QgsDebugMsg( e.tagName() ); // the node really is an element.
if ( e.tagName() == QLatin1String( "Service" ) || e.tagName() == QLatin1String( "ows:ServiceProvider" ) || e.tagName() == QLatin1String( "ows:ServiceIdentification" ) )
{
QgsDebugMsg( " Service." );
parseService( e, capabilitiesProperty.service );
}
else if ( e.tagName() == QLatin1String( "Capability" ) || e.tagName() == QLatin1String( "ows:OperationsMetadata" ) )
{
QgsDebugMsg( " Capability." );
parseCapability( e, capabilitiesProperty.capability );
}
else if ( e.tagName() == QLatin1String( "Contents" ) )
{
QgsDebugMsg( " Contents." );
parseWMTSContents( e );
}
}
n = n.nextSibling();
}
QgsDebugMsg( "exiting." );
return true;
}
void QgsWmsCapabilities::parseService( QDomElement const & e, QgsWmsServiceProperty& serviceProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
// QgsDebugMsg( " " + e1.tagName() ); // the node really is an element.
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName.startsWith( QLatin1String( "ows:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "Title" ) )
{
serviceProperty.title = e1.text();
}
else if ( tagName == QLatin1String( "Abstract" ) )
{
serviceProperty.abstract = e1.text();
}
else if ( tagName == QLatin1String( "KeywordList" ) || tagName == QLatin1String( "Keywords" ) )
{
parseKeywordList( e1, serviceProperty.keywordList );
}
else if ( tagName == QLatin1String( "OnlineResource" ) )
{
parseOnlineResource( e1, serviceProperty.onlineResource );
}
else if ( tagName == QLatin1String( "ContactInformation" ) || tagName == QLatin1String( "ServiceContact" ) )
{
parseContactInformation( e1, serviceProperty.contactInformation );
}
else if ( tagName == QLatin1String( "Fees" ) )
{
serviceProperty.fees = e1.text();
}
else if ( tagName == QLatin1String( "AccessConstraints" ) )
{
serviceProperty.accessConstraints = e1.text();
}
else if ( tagName == QLatin1String( "LayerLimit" ) )
{
serviceProperty.layerLimit = e1.text().toUInt();
}
else if ( tagName == QLatin1String( "MaxWidth" ) )
{
serviceProperty.maxWidth = e1.text().toUInt();
}
else if ( tagName == QLatin1String( "MaxHeight" ) )
{
serviceProperty.maxHeight = e1.text().toUInt();
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseOnlineResource( QDomElement const & e, QgsWmsOnlineResourceAttribute& onlineResourceAttribute )
{
onlineResourceAttribute.xlinkHref = QUrl::fromEncoded( e.attribute( QStringLiteral( "xlink:href" ) ).toUtf8() ).toString();
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseKeywordList( QDomElement const & e, QStringList& keywordListProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName.startsWith( QLatin1String( "ows:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "Keyword" ) )
{
QgsDebugMsg( " Keyword." );
keywordListProperty += e1.text();
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseContactInformation( QDomElement const & e, QgsWmsContactInformationProperty& contactInformationProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "ContactPersonPrimary" ) )
{
parseContactPersonPrimary( e1, contactInformationProperty.contactPersonPrimary );
}
else if ( tagName == QLatin1String( "ContactPosition" ) || tagName == QLatin1String( "ows:PositionName" ) )
{
contactInformationProperty.contactPosition = e1.text();
}
else if ( tagName == QLatin1String( "ContactAddress" ) )
{
parseContactAddress( e1, contactInformationProperty.contactAddress );
}
else if ( tagName == QLatin1String( "ContactVoiceTelephone" ) )
{
contactInformationProperty.contactVoiceTelephone = e1.text();
}
else if ( tagName == QLatin1String( "ContactFacsimileTelephone" ) )
{
contactInformationProperty.contactFacsimileTelephone = e1.text();
}
else if ( tagName == QLatin1String( "ContactElectronicMailAddress" ) )
{
contactInformationProperty.contactElectronicMailAddress = e1.text();
}
else if ( tagName == QLatin1String( "ows:IndividualName" ) )
{
contactInformationProperty.contactPersonPrimary.contactPerson = e1.text();
}
else if ( tagName == QLatin1String( "ows:ProviderName" ) )
{
contactInformationProperty.contactPersonPrimary.contactOrganization = e1.text();
}
else if ( tagName == QLatin1String( "ows:ContactInfo" ) )
{
QDomNode n = n1.firstChildElement( QStringLiteral( "ows:Phone" ) );
contactInformationProperty.contactVoiceTelephone = n.firstChildElement( QStringLiteral( "ows:Voice" ) ).toElement().text();
contactInformationProperty.contactFacsimileTelephone = n.firstChildElement( QStringLiteral( "ows:Facsimile" ) ).toElement().text();
n = n1.firstChildElement( QStringLiteral( "ows:Address" ) );
contactInformationProperty.contactElectronicMailAddress = n.firstChildElement( QStringLiteral( "ows:ElectronicMailAddress" ) ).toElement().text();
contactInformationProperty.contactAddress.address = n.firstChildElement( QStringLiteral( "ows:DeliveryPoint" ) ).toElement().text();
contactInformationProperty.contactAddress.city = n.firstChildElement( QStringLiteral( "ows:City" ) ).toElement().text();
contactInformationProperty.contactAddress.stateOrProvince = n.firstChildElement( QStringLiteral( "ows:AdministrativeArea" ) ).toElement().text();
contactInformationProperty.contactAddress.postCode = n.firstChildElement( QStringLiteral( "ows:PostalCode" ) ).toElement().text();
contactInformationProperty.contactAddress.country = n.firstChildElement( QStringLiteral( "ows:Country" ) ).toElement().text();
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseContactPersonPrimary( QDomElement const & e, QgsWmsContactPersonPrimaryProperty& contactPersonPrimaryProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "ContactPerson" ) )
{
contactPersonPrimaryProperty.contactPerson = e1.text();
}
else if ( tagName == QLatin1String( "ContactOrganization" ) )
{
contactPersonPrimaryProperty.contactOrganization = e1.text();
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseContactAddress( QDomElement const & e, QgsWmsContactAddressProperty& contactAddressProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "AddressType" ) )
{
contactAddressProperty.addressType = e1.text();
}
else if ( tagName == QLatin1String( "Address" ) )
{
contactAddressProperty.address = e1.text();
}
else if ( tagName == QLatin1String( "City" ) )
{
contactAddressProperty.city = e1.text();
}
else if ( tagName == QLatin1String( "StateOrProvince" ) )
{
contactAddressProperty.stateOrProvince = e1.text();
}
else if ( tagName == QLatin1String( "PostCode" ) )
{
contactAddressProperty.postCode = e1.text();
}
else if ( tagName == QLatin1String( "Country" ) )
{
contactAddressProperty.country = e1.text();
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseCapability( QDomElement const & e, QgsWmsCapabilityProperty& capabilityProperty )
{
for ( QDomNode n1 = e.firstChild(); !n1.isNull(); n1 = n1.nextSibling() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( e1.isNull() )
continue;
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
QgsDebugMsg( " " + e1.tagName() ); // the node really is an element.
if ( tagName == QLatin1String( "Request" ) )
{
parseRequest( e1, capabilityProperty.request );
}
else if ( tagName == QLatin1String( "Layer" ) )
{
QgsWmsLayerProperty layer;
parseLayer( e1, layer );
capabilityProperty.layers.push_back( layer );
}
else if ( tagName == QLatin1String( "VendorSpecificCapabilities" ) )
{
for ( int i = 0; i < e1.childNodes().size(); i++ )
{
QDomNode n2 = e1.childNodes().item( i );
QDomElement e2 = n2.toElement();
QString tagName = e2.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "TileSet" ) )
{
parseTileSetProfile( e2 );
}
}
}
else if ( tagName == QLatin1String( "ows:Operation" ) )
{
QString name = e1.attribute( QStringLiteral( "name" ) );
QDomElement get = n1.firstChildElement( QStringLiteral( "ows:DCP" ) )
.firstChildElement( QStringLiteral( "ows:HTTP" ) )
.firstChildElement( QStringLiteral( "ows:Get" ) );
QString href = get.attribute( QStringLiteral( "xlink:href" ) );
QgsWmsDcpTypeProperty dcp;
dcp.http.get.onlineResource.xlinkHref = href;
QgsWmsOperationType *ot = nullptr;
if ( href.isNull() )
{
QgsDebugMsg( QString( "http get missing from ows:Operation '%1'" ).arg( name ) );
}
else if ( name == QLatin1String( "GetTile" ) )
{
ot = &capabilityProperty.request.getTile;
}
else if ( name == QLatin1String( "GetFeatureInfo" ) )
{
ot = &capabilityProperty.request.getFeatureInfo;
}
else if ( name == QLatin1String( "GetLegendGraphic" ) || name == QLatin1String( "sld:GetLegendGraphic" ) )
{
ot = &capabilityProperty.request.getLegendGraphic;
}
else
{
QgsDebugMsg( QString( "ows:Operation %1 ignored" ).arg( name ) );
}
if ( ot )
{
ot->dcpType << dcp;
ot->allowedEncodings.clear();
for ( QDomElement e2 = get.firstChildElement( QStringLiteral( "ows:Constraint" ) ).firstChildElement( QStringLiteral( "ows:AllowedValues" ) ).firstChildElement( QStringLiteral( "ows:Value" ) );
!e2.isNull();
e2 = e1.nextSiblingElement( QStringLiteral( "ows:Value" ) ) )
{
ot->allowedEncodings << e2.text();
}
}
}
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseRequest( QDomElement const & e, QgsWmsRequestProperty& requestProperty )
{
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString operation = e1.tagName();
if ( operation == QLatin1String( "Operation" ) )
{
operation = e1.attribute( QStringLiteral( "name" ) );
}
if ( operation == QLatin1String( "GetMap" ) )
{
QgsDebugMsg( " GetMap." );
parseOperationType( e1, requestProperty.getMap );
}
else if ( operation == QLatin1String( "GetFeatureInfo" ) )
{
QgsDebugMsg( " GetFeatureInfo." );
parseOperationType( e1, requestProperty.getFeatureInfo );
}
else if ( operation == QLatin1String( "GetLegendGraphic" ) || operation == QLatin1String( "sld:GetLegendGraphic" ) )
{
QgsDebugMsg( " GetLegendGraphic." );
parseOperationType( e1, requestProperty.getLegendGraphic );
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseLegendUrl( QDomElement const & e, QgsWmsLegendUrlProperty& legendUrlProperty )
{
legendUrlProperty.width = e.attribute( QStringLiteral( "width" ) ).toUInt();
legendUrlProperty.height = e.attribute( QStringLiteral( "height" ) ).toUInt();
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "Format" ) )
{
legendUrlProperty.format = e1.text();
}
else if ( tagName == QLatin1String( "OnlineResource" ) )
{
parseOnlineResource( e1, legendUrlProperty.onlineResource );
}
}
n1 = n1.nextSibling();
}
QgsDebugMsg( "exiting." );
}
void QgsWmsCapabilities::parseLayer( QDomElement const & e, QgsWmsLayerProperty& layerProperty,
QgsWmsLayerProperty *parentProperty )
{
// TODO: Delete this stanza completely, depending on success of "Inherit things into the sublayer" below.
#if 0
// enforce WMS non-inheritance rules
layerProperty.name = QString::null;
layerProperty.title = QString::null;
layerProperty.abstract = QString::null;
layerProperty.keywordList.clear();
#endif
layerProperty.orderId = ++mLayerCount;
layerProperty.queryable = e.attribute( QStringLiteral( "queryable" ) ).toUInt();
layerProperty.cascaded = e.attribute( QStringLiteral( "cascaded" ) ).toUInt();
layerProperty.opaque = e.attribute( QStringLiteral( "opaque" ) ).toUInt();
layerProperty.noSubsets = e.attribute( QStringLiteral( "noSubsets" ) ).toUInt();
layerProperty.fixedWidth = e.attribute( QStringLiteral( "fixedWidth" ) ).toUInt();
layerProperty.fixedHeight = e.attribute( QStringLiteral( "fixedHeight" ) ).toUInt();
QDomNode n1 = e.firstChild();
while ( !n1.isNull() )
{
QDomElement e1 = n1.toElement(); // try to convert the node to an element.
if ( !e1.isNull() )
{
//QgsDebugMsg( " " + e1.tagName() ); // the node really is an element.
QString tagName = e1.tagName();
if ( tagName.startsWith( QLatin1String( "wms:" ) ) )
tagName = tagName.mid( 4 );
if ( tagName == QLatin1String( "Layer" ) )
{
//QgsDebugMsg( " Nested layer." );
QgsWmsLayerProperty subLayerProperty;
// Inherit things into the sublayer
// Ref: 7.2.4.8 Inheritance of layer properties
subLayerProperty.style = layerProperty.style;
subLayerProperty.crs = layerProperty.crs;
subLayerProperty.boundingBoxes = layerProperty.boundingBoxes;
subLayerProperty.ex_GeographicBoundingBox = layerProperty.ex_GeographicBoundingBox;
// TODO
parseLayer( e1, subLayerProperty, &layerProperty );
layerProperty.layer.push_back( subLayerProperty );
}
else if ( tagName == QLatin1String( "Name" ) )
{
layerProperty.name = e1.text();
}
else if ( tagName == QLatin1String( "Title" ) )
{
layerProperty.title = e1.text();
}
else if ( tagName == QLatin1String( "Abstract" ) )
{
layerProperty.abstract = e1.text();
}
else if ( tagName == QLatin1String( "KeywordList" ) )
{
parseKeywordList( e1, layerProperty.keywordList );
}
else if ( tagName == QLatin1String( "SRS" ) || tagName == QLatin1String( "CRS" ) )
{
// CRS can contain several definitions separated by whitespace
// though this was deprecated in WMS 1.1.1
Q_FOREACH ( const QString& srs, e1.text().split( QRegExp( "\\s+" ) ) )
{
layerProperty.crs.push_back( srs );
}
}
else if ( tagName == QLatin1String( "LatLonBoundingBox" ) ) // legacy from earlier versions of WMS
{
layerProperty.ex_GeographicBoundingBox = QgsRectangle(
e1.attribute( QStringLiteral( "minx" ) ).toDouble(),
e1.attribute( QStringLiteral( "miny" ) ).toDouble(),
e1.attribute( QStringLiteral( "maxx" ) ).toDouble(),
e1.attribute( QStringLiteral( "maxy" ) ).toDouble()
);
if ( e1.hasAttribute( QStringLiteral( "SRS" ) ) && e1.attribute( QStringLiteral( "SRS" ) ) != DEFAULT_LATLON_CRS )
{
try
{
QgsCoordinateReferenceSystem src = QgsCoordinateReferenceSystem::fromOgcWmsCrs( e1.attribute( QStringLiteral( "SRS" ) ) );
QgsCoordinateReferenceSystem dst = QgsCoordinateReferenceSystem::fromOgcWmsCrs( DEFAULT_LATLON_CRS );
QgsCoordinateTransform ct( src, dst );
layerProperty.ex_GeographicBoundingBox = ct.transformBoundingBox( layerProperty.ex_GeographicBoundingBox );
}
catch ( QgsCsException &cse )
{
Q_UNUSED( cse );
}
}
}
else if ( tagName == QLatin1String( "EX_GeographicBoundingBox" ) ) //for WMS 1.3
{
QDomElement wBoundLongitudeElem, eBoundLongitudeElem, sBoundLatitudeElem, nBoundLatitudeElem;
if ( e1.tagName() == QLatin1String( "wms:EX_GeographicBoundingBox" ) )
{
wBoundLongitudeElem = n1.namedItem( QStringLiteral( "wms:westBoundLongitude" ) ).toElement();
eBoundLongitudeElem = n1.namedItem( QStringLiteral( "wms:eastBoundLongitude" ) ).toElement();
sBoundLatitudeElem = n1.namedItem( QStringLiteral( "wms:southBoundLatitude" ) ).toElement();
nBoundLatitudeElem = n1.namedItem( QStringLiteral( "wms:northBoundLatitude" ) ).toElement();
}
else
{
wBoundLongitudeElem = n1.namedItem( QStringLiteral( "westBoundLongitude" ) ).toElement();
eBoundLongitudeElem = n1.namedItem( QStringLiteral( "eastBoundLongitude" ) ).toElement();
sBoundLatitudeElem = n1.namedItem( QStringLiteral( "southBoundLatitude" ) ).toElement();
nBoundLatitudeElem = n1.namedItem( QStringLiteral( "northBoundLatitude" ) ).toElement();
}
double wBLong, eBLong, sBLat, nBLat;
bool wBOk, eBOk, sBOk, nBOk;
wBLong = wBoundLongitudeElem.text().toDouble( &wBOk );
eBLong = eBoundLongitudeElem.text().toDouble( &eBOk );
sBLat = sBoundLatitudeElem.text().toDouble( &sBOk );
nBLat = nBoundLatitudeElem.text().toDouble( &nBOk );
if ( wBOk && eBOk && sBOk && nBOk )
{
layerProperty.ex_GeographicBoundingBox = QgsRectangle( wBLong, sBLat, eBLong, nBLat );
}
}
else if ( tagName == QLatin1String( "BoundingBox" ) )
{
// TODO: overwrite inherited
QgsWmsBoundingBoxProperty bbox;
bbox.box = QgsRectangle( e1.attribute( QStringLiteral( "minx" ) ).toDouble(),
e1.attribute( QStringLiteral( "miny" ) ).toDouble(),
e1.attribute( QStringLiteral( "maxx" ) ).toDouble(),
e1.attribute( QStringLiteral( "maxy" ) ).toDouble()
);
if ( e1.hasAttribute( QStringLiteral( "CRS" ) ) || e1.hasAttribute( QStringLiteral( "SRS" ) ) )
{
if ( e1.hasAttribute( QStringLiteral( "CRS" ) ) )
bbox.crs = e1.attribute( QStringLiteral( "CRS" ) );
else if ( e1.hasAttribute( QStringLiteral( "SRS" ) ) )
bbox.crs = e1.attribute( QStringLiteral( "SRS" ) );
if ( shouldInvertAxisOrientation( bbox.crs ) )
{
QgsRectangle invAxisBbox( bbox.box.yMinimum(), bbox.box.xMinimum(),
bbox.box.yMaximum(), bbox.box.xMaximum() );
bbox.box = invAxisBbox;
}
layerProperty.boundingBoxes << bbox;
}
else
{
QgsDebugMsg( "CRS/SRS attribute not found in BoundingBox" );
}
}
else if ( tagName == QLatin1String( "Dimension" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "Attribution" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "AuthorityURL" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "Identifier" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "MetadataURL" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "DataURL" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "FeatureListURL" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "Style" ) )
{
QgsWmsStyleProperty styleProperty;
parseStyle( e1, styleProperty );
for ( int i = 0; i < layerProperty.style.size(); ++i )
{
if ( layerProperty.style.at( i ).name == styleProperty.name )
{
// override inherited parent's style if it has the same name
// according to the WMS spec, it should not happen, but Mapserver
// does it all the time.
layerProperty.style.remove( i );
break;
}
}
layerProperty.style.push_back( styleProperty );
}
else if ( tagName == QLatin1String( "MinScaleDenominator" ) )
{
// TODO
}
else if ( tagName == QLatin1String( "MaxScaleDenominator" ) )
{
// TODO
}
// If we got here then it's not in the WMS 1.3 standard
}
n1 = n1.nextSibling();
}
if ( parentProperty )
{
mLayerParents[ layerProperty.orderId ] = parentProperty->orderId;
}
if ( !layerProperty.name.isEmpty() )
{
// We have all the information we need to properly evaluate a layer definition
// TODO: Save this somewhere
// Store if the layer is queryable
mQueryableForLayer[ layerProperty.name ] = layerProperty.queryable;
// Insert into the local class' registry
mLayersSupported.push_back( layerProperty );
//if there are several <Layer> elements without a parent layer, the style list needs to be cleared
if ( layerProperty.layer.empty() )
{
layerProperty.style.clear();
}
}