/// <summary>
/// Verify required OGC parameters have been supplied return the request parameter
/// </summary>
private string GetOgcRequest(HttpResponse response, StringDictionary parameters)
{
//Request parameter is mandatory
string request = parameters[OgcParameters.Request];
if (String.IsNullOrEmpty(request))
{
SetResponseToServiceException(response, (OgcErrorMessages.RequiredParameter(OgcParameters.Request)));
return(null);
}
if (!String.IsNullOrEmpty(parameters[OgcParameters.Version]))
{
if (String.Compare(parameters[OgcParameters.Version], "1.3.0", true) != 0)
{
SetResponseToServiceException(response, "Only version 1.3.0 supported");
return(null);
}
}
else //Version is mandatory if REQUEST!=GetCapabilities. Check if this is a capabilities request, since VERSION is null
{
if ((String.Compare(request, "GetCapabilities", true) != 0) &&
(String.Compare(request, "GetMetadata", true) != 0) &&
(String.Compare(request, "GetLegendImage", true) != 0))
{
SetResponseToServiceException(response, OgcErrorMessages.RequiredParameter(OgcParameters.Version));
return(null);
}
}
return(request);
}
/// <summary>
/// OGC WMS GetFeatureInfo
/// </summary>
/// <param name="context"></param>
private void ProcessGetFeatureInfo(HttpContext context, StringDictionary parameters)
{
string infoFormat = parameters[WmsParameters.InfoFormat];
if (String.IsNullOrEmpty(infoFormat))
{
SetResponseToServiceException(context.Response, OgcErrorMessages.RequiredParameter(WmsParameters.InfoFormat));
return;
}
// Store the Aggregate Schema for clients that validate the schema
if (!File.Exists(context.Server.MapPath(Declarations.DefaultSchemaName)))
{
//byte[] featureTypesSchema = spatialServiceClient.GetAllFeatureTypes();
//TODO:
// Schema
// MemoryStream schemaMemoryStream = new MemoryStream(featureTypesSchema);
// XmlDocument schemaDocument = new XmlDocument();
// schemaDocument.Load(schemaMemoryStream);
// schemaDocument.Save(context.Server.MapPath(Declarations.FishSchemaName));
}
//// Features
//FeatureCollection featureCollection = spatialServiceClient.GetFeatureInfo(parameters);
XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
namespaces.Add(Declarations.WmsPrefix, Declarations.WmsNameSpace);
namespaces.Add(Declarations.DefaultPrefix, Declarations.DefaultNameSpace);
namespaces.Add(Declarations.WmsPrefix, Declarations.WmsNameSpace);
namespaces.Add(Declarations.OgcPrefix, Declarations.OgcNameSpace);
namespaces.Add(Declarations.GmlPrefix, Declarations.GmlNameSpace);
namespaces.Add(Declarations.GmlSfPrefix, Declarations.GmlSfNameSpace);
namespaces.Add(Declarations.XlinkPrefix, Declarations.XlinkNameSpace);
context.Response.Clear();
context.Response.ContentType = infoFormat;
XmlWriter xmlWriter = XmlWriter.Create(context.Response.OutputStream);
//XmlSerializer serializer = new XmlSerializer(typeof(FeatureCollection), Declarations.FishNameSpace);
//MemoryStream xmlMemoryStream = new MemoryStream();
//serializer.Serialize(xmlMemoryStream, featureCollection, namespaces);
//xmlMemoryStream.Position = 0;
//XmlDocument xmlDocument = new XmlDocument();
//xmlDocument.Load(xmlMemoryStream);
//if (infoFormat.ToLower() == "text/html")
//{
// XmlProcessingInstruction processingInstruction = xmlDocument.CreateProcessingInstruction("xml-stylesheet", String.Format("type='text/xsl' href='{0}'", Declarations.DefaultStyleSheet));
// xmlDocument.InsertAfter(processingInstruction, xmlDocument.FirstChild);
//}
//xmlDocument.WriteTo(xmlWriter);
//xmlWriter.Flush();
}
/// <summary>
/// OGC WMS GetCapabilities
/// </summary>
/// <param name="context"></param>
private void ProcessGetCapabilities(HttpResponse response, StringDictionary parameters)
{
//Service parameter is mandatory for GetCapabilities request
if (String.IsNullOrEmpty(parameters[OgcParameters.Service]))
{
SetResponseToServiceException(response, OgcErrorMessages.RequiredParameter(OgcParameters.Service));
return;
}
if (String.Compare(parameters[OgcParameters.Service], ServiceNames.WMS.ToString()) != 0)
{
SetResponseToServiceException(response, "Invalid service for GetCapabilities Request. Service parameter must be 'WMS'");
return;
}
// deserialise template GetCapabilities document
XmlSerializer deSerializer = new XmlSerializer(typeof(WMS_Capabilities), Declarations.WmsNameSpace);
FileStream readStream = new FileStream(Path.Combine(HttpContext.Current.Server.MapPath("~/App_Data"), "WMSCapabilities.xml"), FileMode.Open, FileAccess.Read);
WMS_Capabilities wmsCapabilities = (WMS_Capabilities)deSerializer.Deserialize(readStream);
readStream.Close();
// get the map service view context
ViewContext webMapContext = OgcUtilities.GetViewContext();
// add layers
List <GeospatialServices.Ogc.Wms.Layer> wmsLayers = new List <GeospatialServices.Ogc.Wms.Layer>();
foreach (var layer in webMapContext.Layers)
{
GeospatialServices.Ogc.Wms.Layer ogcLayer = new GeospatialServices.Ogc.Wms.Layer( );
ogcLayer.Queryable = 1;
ogcLayer.Name = layer.Name;
ogcLayer.Title = layer.Title;
ogcLayer.CRSList.Add(layer.SRS);
wmsLayers.Add(ogcLayer);
}
wmsCapabilities.Capability.Layer.LayerList = wmsLayers;
// Namespaces
XmlSerializerNamespaces namespaces = new XmlSerializerNamespaces();
namespaces.Add(Declarations.WmsPrefix, Declarations.WmsNameSpace);
namespaces.Add(Declarations.OgcPrefix, Declarations.OgcNameSpace);
namespaces.Add(Declarations.XlinkPrefix, Declarations.XlinkNameSpace);
// Serialize
XmlSerializer capSerializer = new XmlSerializer(typeof(WMS_Capabilities), Declarations.WmsNameSpace);
MemoryStream memoryStream = new MemoryStream();
capSerializer.Serialize(memoryStream, wmsCapabilities, namespaces);
byte[] buffer = memoryStream.ToArray();
response.Clear();
response.ContentType = "text/xml";
response.OutputStream.Write(buffer, 0, buffer.Length);
}
/// <summary>
/// Verify required OGC parameters have been supplied return the request parameter
/// </summary>
private string GetOgcRequest(HttpResponse response, StringDictionary parameters)
{
if (String.IsNullOrEmpty(parameters[OgcParameters.Service]))
{
SetResponseToServiceException(response, OgcErrorMessages.RequiredParameter(OgcParameters.Service));
return(null);
}
if (String.Compare(parameters[OgcParameters.Service], ServiceNames.WFS.ToString()) != 0)
{
SetResponseToServiceException(response, "Invalid service. Service parameter must be 'WFS'");
return(null);
}
string request = parameters[OgcParameters.Request];
if (String.IsNullOrEmpty(request))
{
SetResponseToServiceException(response, OgcErrorMessages.RequiredParameter(OgcParameters.Request));
return(null);
}
if (String.IsNullOrEmpty(parameters[OgcParameters.Version]))
{
SetResponseToServiceException(response, OgcErrorMessages.RequiredParameter(OgcParameters.Version));
return(null);
}
if (String.Compare(request, "GetCapabilities") != 0 && String.Compare(parameters[OgcParameters.Version], "1.1.0") != 0)
{
SetResponseToServiceException(response, "Invalid VERSION for Request. Only 1.1.0 and 1.0.0 (GetCapabilities) supported");
return(null);
}
return(request);
}
private void CheckIsValidGetMapRequest(StringDictionary dictionary)
{
if (String.IsNullOrEmpty(dictionary[WmsParameters.SldBody]))
{
// Check for required parameters
if (String.IsNullOrEmpty(dictionary[WmsParameters.Layers]))
{
throw new WmsFault(WmsExceptionCode.LayerNotDefined, "Either SLD_BODY or LAYERS must be specified");
}
if (dictionary[WmsParameters.Styles] == null)
{
throw new WmsFault(WmsExceptionCode.StyleNotDefined, "Either SLD_BODY or STYLES must be specified");
}
}
if (String.IsNullOrEmpty(dictionary[WmsParameters.Crs]))
{
throw new WmsFault(WmsExceptionCode.InvalidCRS, OgcErrorMessages.RequiredParameter(WmsParameters.Crs));
}
if (String.IsNullOrEmpty(dictionary[WmsParameters.Bbox]))
{
throw new WmsFault(WmsExceptionCode.InvalidDimensionValue, OgcErrorMessages.RequiredParameter(WmsParameters.Bbox));
}
if (String.IsNullOrEmpty(dictionary[WmsParameters.Width]))
{
throw new WmsFault(WmsExceptionCode.InvalidDimensionValue, OgcErrorMessages.RequiredParameter(WmsParameters.Width));
}
if (String.IsNullOrEmpty(dictionary[WmsParameters.Height]))
{
throw new WmsFault(WmsExceptionCode.InvalidDimensionValue, OgcErrorMessages.RequiredParameter(WmsParameters.Height));
}
string mimeType = dictionary[WmsParameters.Format];
if (String.IsNullOrEmpty(mimeType))
{
throw new WmsFault(WmsExceptionCode.InvalidFormat, OgcErrorMessages.RequiredParameter(WmsParameters.Format));
}
// Get the image format requested
//System.Drawing.Imaging.ImageCodecInfo imageEncoder = GraphicsHelper.GetImageEncoder(mimeType);
//if (imageEncoder == null)
// throw new FaultException<WmsFault>(new WmsFault(WmsExceptionCode.InvalidFormat), "Invalid MimeType specified in FORMAT parameter");
int height, width = 0;
if (!int.TryParse(dictionary[WmsParameters.Width], out width))
{
throw new WmsFault(WmsExceptionCode.InvalidDimensionValue, "Invalid parameter WIDTH");
}
if (MapLimits.MaxMapWidth > 0 && width > MapLimits.MaxMapWidth)
{
throw new WmsFault(WmsExceptionCode.OperationNotSupported, "Parameter WIDTH too large");
}
if (!int.TryParse(dictionary[WmsParameters.Height], out height))
{
throw new WmsFault(WmsExceptionCode.InvalidDimensionValue, "Invalid parameter HEIGHT");
}
if (MapLimits.MaxMapHeight > 0 && height > MapLimits.MaxMapHeight)
{
throw new WmsFault(WmsExceptionCode.OperationNotSupported, "Parameter HEIGHT too large");
}
//if (!Utils.IsValidBBox(dictionary[WmsParameters.Bbox]))
// throw new FaultException<WmsFault>(new WmsFault(WmsExceptionCode.NotApplicable), "Invalid parameter BBOX");
// Set layers on/off
if (!String.IsNullOrEmpty(dictionary[WmsParameters.Layers]))
{
string[] requestedLayers = dictionary[WmsParameters.Layers].Split(new char[] { ',' });
string styles = dictionary[WmsParameters.Styles];
string[] requestedStyles = styles.Split(new char[] { ',' });
if (styles != string.Empty && requestedStyles.Length > 0 && requestedLayers.Length != requestedStyles.Length)
{
throw new WmsFault(WmsExceptionCode.NotApplicable, "The number of STYLES should match the number of LAYERS");
}
if (MapLimits.MaxMapLayers > 0)
{
if (requestedLayers.Length > MapLimits.MaxMapLayers)
{
throw new WmsFault(WmsExceptionCode.OperationNotSupported, "Too many layers requested");
}
}
}
}
