void QgsWcsCapabilities::capabilitiesReplyFinished()
{
if ( mCapabilitiesReply->error() == QNetworkReply::NoError )
{
QVariant redirect = mCapabilitiesReply->attribute( QNetworkRequest::RedirectionTargetAttribute );
if ( !redirect.isNull() )
{
emit statusChanged( tr( "Capabilities request redirected." ) );
QNetworkRequest request( redirect.toUrl() );
setAuthorization( request );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferNetwork );
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
mCapabilitiesReply->deleteLater();
QgsDebugMsg( QString( "redirected getcapabilities: %1" ).arg( redirect.toString() ) );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
connect( mCapabilitiesReply, SIGNAL( downloadProgress( qint64, qint64 ) ), this, SLOT( capabilitiesReplyProgress( qint64, qint64 ) ) );
return;
}
mCapabilitiesResponse = mCapabilitiesReply->readAll();
if ( mCapabilitiesResponse.isEmpty() )
{
mErrorFormat = "text/plain";
mError = tr( "empty of capabilities: %1" ).arg( mCapabilitiesReply->errorString() );
}
}
else
{
// Resend request if AlwaysCache
QNetworkRequest request = mCapabilitiesReply->request();
if ( request.attribute( QNetworkRequest::CacheLoadControlAttribute ).toInt() == QNetworkRequest::AlwaysCache )
{
QgsDebugMsg( "Resend request with PreferCache" );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferCache );
mCapabilitiesReply->deleteLater();
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
connect( mCapabilitiesReply, SIGNAL( downloadProgress( qint64, qint64 ) ), this, SLOT( capabilitiesReplyProgress( qint64, qint64 ) ) );
return;
}
mErrorFormat = "text/plain";
mError = tr( "Download of capabilities failed: %1" ).arg( mCapabilitiesReply->errorString() );
QgsMessageLog::logMessage( mError, tr( "WCS" ) );
mCapabilitiesResponse.clear();
}
mCapabilitiesReply->deleteLater();
mCapabilitiesReply = 0;
}
void QgsWFSCapabilities::requestCapabilities()
{
mErrorCode = QgsWFSCapabilities::NoError;
mErrorMessage.clear();
QNetworkRequest request( uriGetCapabilities() );
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
}
void QgsWFSSourceSelect::on_cmbConnections_activated( int index )
{
Q_UNUSED( index );
QgsWFSConnection::setSelectedConnection( cmbConnections->currentText() );
QgsWFSConnection connection( cmbConnections->currentText() );
delete mCapabilities;
mCapabilities = new QgsWFSCapabilities( connection.uri().uri() );
connect( mCapabilities, SIGNAL( gotCapabilities() ), this, SLOT( capabilitiesReplyFinished() ) );
}
bool QgsWcsCapabilities::sendRequest( QString const & url )
{
QgsDebugMsg( "url = " + url );
mError = "";
QNetworkRequest request( url );
if ( !setAuthorization( request ) )
{
mError = tr( "Download of capabilities failed: network request update failed for authentication config" );
QgsMessageLog::logMessage( mError, tr( "WCS" ) );
return false;
}
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, mCacheLoadControl );
QgsDebugMsg( QString( "mCacheLoadControl = %1" ).arg( mCacheLoadControl ) );
QgsDebugMsg( QString( "getcapabilities: %1" ).arg( url ) );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
if ( !setAuthorizationReply( mCapabilitiesReply ) )
{
mCapabilitiesReply->deleteLater();
mCapabilitiesReply = nullptr;
mError = tr( "Download of capabilities failed: network reply update failed for authentication config" );
QgsMessageLog::logMessage( mError, tr( "WCS" ) );
return false;
}
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
connect( mCapabilitiesReply, SIGNAL( downloadProgress( qint64, qint64 ) ), this, SLOT( capabilitiesReplyProgress( qint64, qint64 ) ) );
QEventLoop loop;
connect( this, SIGNAL( downloadFinished() ), &loop, SLOT( quit() ) );
loop.exec( QEventLoop::ExcludeUserInputEvents );
if ( mCapabilitiesResponse.isEmpty() )
{
if ( mError.isEmpty() )
{
mErrorFormat = "text/plain";
mError = tr( "empty capabilities document" );
}
return false;
}
if ( mCapabilitiesResponse.startsWith( "<html>" ) ||
mCapabilitiesResponse.startsWith( "<HTML>" ) )
{
mErrorFormat = "text/html";
mError = mCapabilitiesResponse;
return false;
}
return true;
}
void QgsWFSSourceSelect::populateConnectionList()
{
QStringList keys = QgsWFSConnection::connectionList();
QStringList::Iterator it = keys.begin();
cmbConnections->clear();
while ( it != keys.end() )
{
cmbConnections->addItem( *it );
++it;
}
if ( keys.begin() != keys.end() )
{
// Connections available - enable various buttons
btnConnect->setEnabled( true );
btnEdit->setEnabled( true );
btnDelete->setEnabled( true );
btnSave->setEnabled( true );
}
else
{
// No connections available - disable various buttons
btnConnect->setEnabled( false );
btnEdit->setEnabled( false );
btnDelete->setEnabled( false );
btnSave->setEnabled( false );
}
//set last used connection
QString selectedConnection = QgsWFSConnection::selectedConnection();
int index = cmbConnections->findText( selectedConnection );
if ( index != -1 )
{
cmbConnections->setCurrentIndex( index );
}
QgsWFSConnection connection( cmbConnections->currentText() );
delete mCapabilities;
mCapabilities = new QgsWFSCapabilities( connection.uri().uri() );
connect( mCapabilities, SIGNAL( gotCapabilities() ), this, SLOT( capabilitiesReplyFinished() ) );
}
bool QgsWcsCapabilities::sendRequest( QString const & url )
{
QgsDebugMsg( "url = " + url );
mError = "";
QNetworkRequest request( url );
setAuthorization( request );
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, mCacheLoadControl );
QgsDebugMsg( QString( "mCacheLoadControl = %1" ).arg( mCacheLoadControl ) );
QgsDebugMsg( QString( "getcapabilities: %1" ).arg( url ) );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
connect( mCapabilitiesReply, SIGNAL( downloadProgress( qint64, qint64 ) ), this, SLOT( capabilitiesReplyProgress( qint64, qint64 ) ) );
while ( mCapabilitiesReply )
{
QCoreApplication::processEvents( QEventLoop::ExcludeUserInputEvents );
}
if ( mCapabilitiesResponse.isEmpty() )
{
if ( mError.isEmpty() )
{
mErrorFormat = "text/plain";
mError = tr( "empty capabilities document" );
}
return false;
}
if ( mCapabilitiesResponse.startsWith( "<html>" ) ||
mCapabilitiesResponse.startsWith( "<HTML>" ) )
{
mErrorFormat = "text/html";
mError = mCapabilitiesResponse;
return false;
}
return true;
}
void QgsWFSCapabilities::capabilitiesReplyFinished()
{
QNetworkReply *reply = mCapabilitiesReply;
reply->deleteLater();
mCapabilitiesReply = 0;
// handle network errors
if ( reply->error() != QNetworkReply::NoError )
{
mErrorCode = QgsWFSCapabilities::NetworkError;
mErrorMessage = reply->errorString();
emit gotCapabilities();
return;
}
// handle HTTP redirects
QVariant redirect = reply->attribute( QNetworkRequest::RedirectionTargetAttribute );
if ( !redirect.isNull() )
{
QgsDebugMsg( "redirecting to " + redirect.toUrl().toString() );
QNetworkRequest request( redirect.toUrl() );
setAuthorization( request );
request.setAttribute( QNetworkRequest::CacheLoadControlAttribute, QNetworkRequest::PreferNetwork );
request.setAttribute( QNetworkRequest::CacheSaveControlAttribute, true );
mCapabilitiesReply = QgsNetworkAccessManager::instance()->get( request );
connect( mCapabilitiesReply, SIGNAL( finished() ), this, SLOT( capabilitiesReplyFinished() ) );
return;
}
QByteArray buffer = reply->readAll();
QgsDebugMsg( "parsing capabilities: " + buffer );
// parse XML
QString capabilitiesDocError;
QDomDocument capabilitiesDocument;
if ( !capabilitiesDocument.setContent( buffer, true, &capabilitiesDocError ) )
{
mErrorCode = QgsWFSCapabilities::XmlError;
mErrorMessage = capabilitiesDocError;
emit gotCapabilities();
return;
}
QDomElement doc = capabilitiesDocument.documentElement();
// hangle exceptions
if ( doc.tagName() == "ExceptionReport" )
{
QDomNode ex = doc.firstChild();
QString exc = ex.toElement().attribute( "exceptionCode", "Exception" );
QDomElement ext = ex.firstChild().toElement();
mErrorCode = QgsWFSCapabilities::ServerExceptionError;
mErrorMessage = exc + ": " + ext.firstChild().nodeValue();
emit gotCapabilities();
return;
}
mCaps.clear();
//test wfs version
QString version = capabilitiesDocument.documentElement().attribute( "version" );
if ( version != "1.0.0" && version != "1.0" )
{
mErrorCode = WFSVersionNotSupported;
mErrorMessage = tr( "Either the WFS server does not support WFS version 1.0.0 or the WFS url is wrong" );
emit gotCapabilities();
return;
}
// get the <FeatureType> elements
QDomNodeList featureTypeList = capabilitiesDocument.elementsByTagNameNS( WFS_NAMESPACE, "FeatureType" );
for ( unsigned int i = 0; i < featureTypeList.length(); ++i )
{
FeatureType featureType;
QDomElement featureTypeElem = featureTypeList.at( i ).toElement();
//Name
QDomNodeList nameList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Name" );
if ( nameList.length() > 0 )
{
featureType.name = nameList.at( 0 ).toElement().text();
}
//Title
QDomNodeList titleList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Title" );
if ( titleList.length() > 0 )
{
featureType.title = titleList.at( 0 ).toElement().text();
}
//Abstract
QDomNodeList abstractList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "Abstract" );
if ( abstractList.length() > 0 )
{
featureType.abstract = abstractList.at( 0 ).toElement().text();
}
//DefaultSRS is always the first entry in the feature srs list
QDomNodeList defaultCRSList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "DefaultSRS" );
if ( defaultCRSList.length() > 0 )
{
featureType.crslist.append( defaultCRSList.at( 0 ).toElement().text() );
}
//OtherSRS
QDomNodeList otherCRSList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "OtherSRS" );
for ( unsigned int i = 0; i < otherCRSList.length(); ++i )
{
featureType.crslist.append( otherCRSList.at( i ).toElement().text() );
}
//Support <SRS> for compatibility with older versions
QDomNodeList srsList = featureTypeElem.elementsByTagNameNS( WFS_NAMESPACE, "SRS" );
for ( unsigned int i = 0; i < srsList.length(); ++i )
{
featureType.crslist.append( srsList.at( i ).toElement().text() );
}
mCaps.featureTypes.append( featureType );
}
emit gotCapabilities();
}
QgsWfsCapabilities::QgsWfsCapabilities( const QString& theUri )
: QgsWfsRequest( theUri )
{
connect( this, SIGNAL( downloadFinished() ), this, SLOT( capabilitiesReplyFinished() ) );
}
