/// <summary>
///
/// </summary>
/// <param name="inRequest"></param>
/// <param name="mode"></param>
/// <param name="authorizedLayerSet"></param>
/// <returns></returns>
private IMessage FilterLayerIds ( IMessage inRequest, SoapRequestType mode, HashSet<String> authorizedLayerSet )
{
// 1. Find the index of the layers parameter
// 2. Get the value for the interested parameter
// 3. Manipulate it
// 4. Put it back into IMessage
int idx = -1;
IXMLSerializeData inRequestData = inRequest.Parameters;
try
{
idx = inRequestData.Find("LayerIDs");
}
catch (Exception ignore)
{
}
LongArray layerIdInLA = null;
if (idx >= 0)
{
// Get all the requested layers
layerIdInLA = (LongArray)inRequestData.GetObject(idx, inRequest.NamespaceURI, "ArrayOfInt");
// Perform filtering based on access to different layers.
// Remove restricted ids in-place
for (int i = layerIdInLA.Count - 1; i >= 0; i--)
{
if (!authorizedLayerSet.Contains(layerIdInLA.Element[i].ToString()))
{
layerIdInLA.Remove(i);
}
}
}
else //no LayerIDs specified, attaching authorized layer list instead
{
layerIdInLA = new LongArrayClass();
foreach (var goodLayerId in authorizedLayerSet)
{
layerIdInLA.Add(Int32.Parse(goodLayerId));
}
inRequestData.AddObject("LayerIDs", layerIdInLA);
}
// If binary request we dont have to create and copy in a new Message object
if (mode == SoapRequestType.Binary)
{
return inRequest;
}
// Create new request message
IMessage modifiedInRequest = _SoapSOIHelper.CreateNewIMessage(inRequest);
IXMLSerializeData modifiedInRequestData = modifiedInRequest.Parameters;
// Put all parameters back in IMessage
for (int i = 0; i < inRequestData.Count; i++)
{
if (_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i).Equals("LayerIDs", StringComparison.CurrentCultureIgnoreCase))
{
// Add the modified MapDescription
_SoapSOIHelper.AddObjectToXMLSerializeData(_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i),
layerIdInLA, _SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, i), modifiedInRequestData);
}
else
{
/*
* Add other parameters as is. Here we are using the SOI helper to add and get parameters
* because we don't care about the type we just want to copy from one IMessage object to
* another.
*/
_SoapSOIHelper.AddObjectToXMLSerializeData(
_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i),
_SoapSOIHelper.GetObjectFromXMLSerializeData(i, inRequest.NamespaceURI,
_SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, i), inRequestData),
_SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, i), modifiedInRequestData);
}
}
return modifiedInRequest;
}
/// <summary>
///
/// </summary>
/// <param name="inRequest"></param>
/// <param name="mode"></param>
/// <param name="authorizedLayerSet"></param>
/// <returns></returns>
private IMessage FilterGetServerInfoResponse ( IMessage inRequest, SoapRequestType mode, HashSet<string> authorizedLayerSet )
{
int idx = -1;
IXMLSerializeData inRequestData = inRequest.Parameters;
idx = inRequestData.Find("Result");
// Get MapServerInfo
MapServerInfo mapServerInfo = (MapServerInfo)inRequestData.GetObject(idx, inRequest.NamespaceURI,
"MapServerInfo");
// Perform filtering based on access to different layers
IMapLayerInfos layerInfos = mapServerInfo.MapLayerInfos;
for (int i = layerInfos.Count - 1; i >= 0; i--)
{
if (!authorizedLayerSet.Contains(layerInfos.Element[i].ID.ToString()))
{
layerInfos.Remove(i);
}
}
IMapDescription mapDescription = mapServerInfo.DefaultMapDescription;
ILayerDescriptions lds = mapDescription.LayerDescriptions;
for (int i = lds.Count - 1; i >= 0; i--)
{
if (!authorizedLayerSet.Contains(lds.Element[i].ID.ToString()))
{
lds.Remove(i);
}
}
// If binary request we don't have to create and copy in a new Message object
if (mode == SoapRequestType.Binary)
{
return inRequest;
}
// Create new request message
IMessage modifiedInRequest = _SoapSOIHelper.CreateNewIMessage(inRequest);
IXMLSerializeData modifiedInRequestData = modifiedInRequest.Parameters;
// Put all parameters back in IMessage
for (int i = 0; i < inRequestData.Count; i++)
{
if (_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i).Equals("Result", StringComparison.CurrentCultureIgnoreCase))
{
// Add the modified MapDescription
modifiedInRequestData.AddObject(_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i), mapServerInfo);
}
else
{
/*
* Add other parameters as is. Here we are using the SOI helper to add and get parameters
* because we don't care about the type we just want to copy from one IMessage object to
* another.
*/
modifiedInRequestData.AddObject(
_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i),
inRequestData.GetObject(i, inRequest.NamespaceURI,
_SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, i)));
}
}
return modifiedInRequest;
}
/// <summary>
///
/// </summary>
/// <param name="inRequest"></param>
/// <param name="mode"></param>
/// <returns></returns>
private SoapRequest FilterSoapRequest ( IMessage inRequest, SoapRequestType mode, HashSet<string> authorizedLayerSet )
{
// Get operation name
String name = inRequest.Name;
// Apply filter only on those operations we care about
var nameInLowerCase = name.ToLower();
switch (nameInLowerCase)
{
case "find":
inRequest = FilterLayerIds(inRequest, mode, authorizedLayerSet);
break;
case "exportmapimage":
inRequest = FilterMapDescription(inRequest, mode, authorizedLayerSet);
break;
case "identify":
inRequest = FilterLayerIds(inRequest, mode, authorizedLayerSet);
break;
case "getlegendinfo":
inRequest = FilterLayerIds(inRequest, mode, authorizedLayerSet);
break;
case "getserverinforesponse":
inRequest = FilterGetServerInfoResponse(inRequest, mode, authorizedLayerSet);
break;
}
return SoapRequestFactory.Create(mode, inRequest);
}
/// <summary>
///
/// </summary>
/// <param name="inRequest"></param>
/// <param name="mode"></param>
/// <param name="authorizedLayerSet"></param>
/// <returns></returns>
private IMessage FilterMapDescription ( IMessage inRequest, SoapRequestType mode, HashSet<string> authorizedLayerSet )
{
// 1. Find the index of the MapDescription parameter
// 2. Get the value for the interested parameter
// 3. Manipulate it
// 4. Put it back into IMessage
// Get the parameters out from the request object
int idx = -1;
IXMLSerializeData inRequestData = inRequest.Parameters;
idx = inRequestData.Find("MapDescription");
MapDescription md =
(MapDescription)inRequestData.GetObject(idx, inRequest.NamespaceURI,
_SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, idx));
// Manipulate the MapDescription to perform layer level security
ILayerDescriptions lds = md.LayerDescriptions;
for (int i = 0; i < lds.Count; i++)
{
ILayerDescription ld = lds.Element[i];
if (!authorizedLayerSet.Contains(ld.ID.ToString()))
{
ld.Visible = false;
}
}
// If binary request we dont have to create and copy in a new Message object
if (mode == SoapRequestType.Binary)
{
return inRequest;
}
// Create new request message
IMessage modifiedInRequest = _SoapSOIHelper.CreateNewIMessage(inRequest);
IXMLSerializeData modifiedInRequestData = modifiedInRequest.Parameters;
// Put all parameters back in IMessage
for (int i = 0; i < inRequestData.Count; i++)
{
if (_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i).Equals("MapDescription", StringComparison.CurrentCultureIgnoreCase))
{
// Add the modified MapDescription
modifiedInRequestData.AddObject(_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i), md);
}
else
{
/*
* Add other parameters as is. Here we are using the SOI helper to add and get parameters
* because we don't care about the type we just want to copy from one IMessage object to
* another.
*/
modifiedInRequestData.AddObject(
_SoapSOIHelper.GetSoapOperationParameterName(inRequest.Name, i),
inRequestData.GetObject(i, inRequest.NamespaceURI,
_SoapSOIHelper.GetSoapOperationParameterTypeName(inRequest.Name, i)));
}
}
return modifiedInRequest;
}