/// <summary>
/// Parses the <paramref name="uri"/> as a reference to a local resource.
/// Returns null if the specified <paramref name="uri"/> is invalid.
/// </summary>
/// <param name="uri">The URI.</param>
/// <param name="serverConfiguration">The server configuration.</param>
/// <returns>ScimResourceReference.</returns>
public static ScimResourceReference ToScimResourceReference(this Uri uri, ScimServerConfiguration serverConfiguration)
{
var scimPathBase = AmbientRequestService.BasePath;
var uriPaths = (string.IsNullOrWhiteSpace(scimPathBase)
? uri.AbsolutePath
: uri.AbsolutePath.Replace(scimPathBase, ""))
.TrimStart('/')
.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
if (uriPaths.Length < 2)
{
return(null);
}
var resourceEndpoint = uriPaths[0];
var resourceId = uriPaths[1];
var resourceDefinition = serverConfiguration
.GetResourceTypeDefinitions(AmbientRequestService.ProtocolVersion)
.SingleOrDefault(rtd => rtd.Endpoint.IndexOf(resourceEndpoint, StringComparison.OrdinalIgnoreCase) >= 0);
if (resourceDefinition == null)
{
return(null); // invalid uri
}
return(new ScimResourceReference(resourceDefinition, resourceId));
}
/// <summary>
/// Parses the <paramref name="uri"/> as a reference to a local resource.
/// Returns null if the specified <paramref name="uri"/> is invalid.
/// </summary>
/// <param name="uri">The URI.</param>
/// <param name="serverConfiguration">The server configuration.</param>
/// <returns>ScimResourceReference.</returns>
public static ScimResourceReference ToScimResourceReference(this Uri uri, ScimServerConfiguration serverConfiguration)
{
var scimPathBase = AmbientRequestService.BasePath;
var uriPaths = (string.IsNullOrWhiteSpace(scimPathBase)
? uri.AbsolutePath
: uri.AbsolutePath.Replace(scimPathBase, ""))
.TrimStart('/')
.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
if (uriPaths.Length < 2)
return null;
var resourceEndpoint = uriPaths[0];
var resourceId = uriPaths[1];
var resourceDefinition = serverConfiguration
.GetResourceTypeDefinitions(AmbientRequestService.ProtocolVersion)
.SingleOrDefault(rtd => rtd.Endpoint.IndexOf(resourceEndpoint, StringComparison.OrdinalIgnoreCase) >= 0);
if (resourceDefinition == null)
return null; // invalid uri
return new ScimResourceReference(resourceDefinition, resourceId);
}
public static Uri EnforceScimUri(Uri uri, IScimTypeAttributeDefinition attributeDefinition, ScimServerConfiguration serverConfiguration)
{
/*
* SCIM 2.0 Specification
* referenceTypes A multi-valued array of JSON strings that indicate
* the SCIM resource types that may be referenced. Valid values
* are as follows:
*
+ A SCIM resource type (e.g., "User" or "Group"),
+
+ "external" - indicating that the resource is an external
+ resource (e.g., a photo), or
+
+ "uri" - indicating that the reference is to a service
+ endpoint or an identifier (e.g., a schema URN).
*/
if (attributeDefinition.ReferenceTypes != null && attributeDefinition.ReferenceTypes.Any())
{
IScimResourceTypeDefinition resourceDefinition = null;
foreach (var referenceType in attributeDefinition.ReferenceTypes)
{
if (referenceType.Equals(ScimConstants.ReferenceTypes.External, StringComparison.OrdinalIgnoreCase))
{
// do not accept relative URIs for an attribute which is defined as an external reference type
if (!uri.IsAbsoluteUri)
{
continue;
}
return(uri);
}
if (referenceType.Equals(ScimConstants.ReferenceTypes.Uri, StringComparison.OrdinalIgnoreCase))
{
if (uri.ToString().StartsWith(ScimConstants.Defaults.URNPrefix, StringComparison.OrdinalIgnoreCase))
{
return(uri); // uri is an identifier, possibly schema
}
// uri MUST be a valid SCIM resource
resourceDefinition = serverConfiguration
.GetResourceTypeDefinitions(AmbientRequestService.ProtocolVersion)
.SingleOrDefault(rtd => uri.AbsolutePath.IndexOf(rtd.Endpoint, StringComparison.OrdinalIgnoreCase) >= 0);
if (resourceDefinition != null)
{
break;
}
continue;
}
// uri MUST be a valid SCIM resource that's within the allowed referenceTypes
resourceDefinition = serverConfiguration
.GetResourceTypeDefinitions(AmbientRequestService.ProtocolVersion)
.SingleOrDefault(
rtd =>
rtd.Name.Equals(referenceType, StringComparison.OrdinalIgnoreCase) &&
uri.AbsolutePath.IndexOf(rtd.Endpoint, StringComparison.OrdinalIgnoreCase) >= 0);
if (resourceDefinition != null)
{
break;
}
}
// invalid URI for the associated reference types
if (resourceDefinition == null)
{
return(uri); // allow validation to handle invalid uri's
}
return(BuildScimUri(uri));
}
/*
* Relative URIs should be resolved as specified in
* Section 5.2 of [RFC3986]. However, the base URI for relative URI
* resolution MUST include all URI components and path segments up to,
* but not including, the Endpoint URI (the SCIM service provider root
* endpoint)
*/
return(BuildScimUri(uri));
}
