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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.IdentityModel.Tokens
{
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IdentityModel.Claims;
using System.IdentityModel.Selectors;
using System.Xml;
public class SamlAttribute
{
string name;
string nameSpace;
readonly ImmutableCollection<string> attributeValues = new ImmutableCollection<string>();
string originalIssuer;
string attributeValueXsiType = System.Security.Claims.ClaimValueTypes.String;
List<Claim> claims;
string claimType;
bool isReadOnly = false;
public SamlAttribute()
{
}
public SamlAttribute(string attributeNamespace, string attributeName, IEnumerable<string> attributeValues)
{
if (string.IsNullOrEmpty(attributeName))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeNameAttributeRequired));
if (string.IsNullOrEmpty(attributeNamespace))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeNamespaceAttributeRequired));
if (attributeValues == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("attributeValues");
this.name = StringUtil.OptimizeString(attributeName);
this.nameSpace = StringUtil.OptimizeString(attributeNamespace);
this.claimType = string.IsNullOrEmpty(this.nameSpace) ? this.name : this.nameSpace + "/" + this.name;
foreach (string value in attributeValues)
{
if (value == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeValueCannotBeNull));
this.attributeValues.Add(value);
}
if (this.attributeValues.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeShouldHaveOneValue));
}
public SamlAttribute(Claim claim)
{
if (claim == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("claim");
if (!(claim.Resource is String))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SamlAttributeClaimResourceShouldBeAString));
if (claim.Right != Rights.PossessProperty)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SamlAttributeClaimRightShouldBePossessProperty));
#pragma warning suppress 56506 // claim.CalimType can never be null.
int lastSlashIndex = claim.ClaimType.LastIndexOf('/');
if ((lastSlashIndex == -1) || (lastSlashIndex == 0) || (lastSlashIndex == claim.ClaimType.Length - 1))
{
this.nameSpace = String.Empty;
this.name = claim.ClaimType;
}
else
{
this.nameSpace = StringUtil.OptimizeString(claim.ClaimType.Substring(0, lastSlashIndex));
this.name = StringUtil.OptimizeString(claim.ClaimType.Substring(lastSlashIndex + 1, claim.ClaimType.Length - (lastSlashIndex + 1)));
}
this.claimType = claim.ClaimType;
this.attributeValues.Add(claim.Resource as string);
}
public string Name
{
get { return this.name; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
if (string.IsNullOrEmpty(value))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeNameAttributeRequired));
this.name = StringUtil.OptimizeString(value);
}
}
public string Namespace
{
get { return this.nameSpace; }
set
{
if (isReadOnly)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new InvalidOperationException(SR.GetString(SR.ObjectIsReadOnly)));
if (string.IsNullOrEmpty(value))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeNamespaceAttributeRequired));
this.nameSpace = StringUtil.OptimizeString(value);
}
}
public IList<string> AttributeValues
{
get { return this.attributeValues; }
}
/// <summary>
/// Gets or Sets the string that represents the OriginalIssuer of the SAML Attribute.
/// </summary>
public string OriginalIssuer
{
get { return this.originalIssuer; }
set
{
if (value == String.Empty)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("value", SR.GetString(SR.ID4251));
}
this.originalIssuer = StringUtil.OptimizeString(value);
}
}
/// <summary>
/// Gets or sets the xsi:type of the values contained in the SAML Attribute.
/// </summary>
public string AttributeValueXsiType
{
get { return attributeValueXsiType; }
set
{
if (string.IsNullOrEmpty(value))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("value", SR.GetString(SR.ID4254));
}
int indexOfHash = value.IndexOf('#');
if (indexOfHash == -1)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("value", SR.GetString(SR.ID4254));
}
string prefix = value.Substring(0, indexOfHash);
if (prefix.Length == 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("value", SR.GetString(SR.ID4254));
}
string suffix = value.Substring(indexOfHash + 1);
if (suffix.Length == 0)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument("value", SR.GetString(SR.ID4254));
}
attributeValueXsiType = value;
}
}
public bool IsReadOnly
{
get { return this.isReadOnly; }
}
public void MakeReadOnly()
{
if (!this.isReadOnly)
{
this.attributeValues.MakeReadOnly();
this.isReadOnly = true;
}
}
public virtual ReadOnlyCollection<Claim> ExtractClaims()
{
if (this.claims == null)
{
List<Claim> tempClaims = new List<Claim>(this.attributeValues.Count);
for (int i = 0; i < this.attributeValues.Count; i++)
{
if (this.attributeValues[i] == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeValueCannotBeNull));
tempClaims.Add(new Claim(this.claimType, this.attributeValues[i], Rights.PossessProperty));
}
this.claims = tempClaims;
}
return this.claims.AsReadOnly();
}
void CheckObjectValidity()
{
if (string.IsNullOrEmpty(this.name))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeNameAttributeRequired)));
if (string.IsNullOrEmpty(this.nameSpace))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeNamespaceAttributeRequired)));
if (this.attributeValues.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeShouldHaveOneValue)));
}
public virtual void ReadXml(XmlDictionaryReader reader, SamlSerializer samlSerializer, SecurityTokenSerializer keyInfoSerializer, SecurityTokenResolver outOfBandTokenResolver)
{
if (reader == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("reader"));
if (samlSerializer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSerializer"));
#pragma warning suppress 56506 // samlSerializer.DictionaryManager is never null.
SamlDictionary dictionary = samlSerializer.DictionaryManager.SamlDictionary;
this.name = reader.GetAttribute(dictionary.AttributeName, null);
if (string.IsNullOrEmpty(this.name))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeMissingNameAttributeOnRead)));
this.nameSpace = reader.GetAttribute(dictionary.AttributeNamespace, null);
if (string.IsNullOrEmpty(this.nameSpace))
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeMissingNamespaceAttributeOnRead)));
this.claimType = string.IsNullOrEmpty(this.nameSpace) ? this.name : this.nameSpace + "/" + this.name;
reader.MoveToContent();
reader.Read();
while (reader.IsStartElement(dictionary.AttributeValue, dictionary.Namespace))
{
// We will load all Attributes as a string value by default.
string attrValue = reader.ReadString();
this.attributeValues.Add(attrValue);
reader.MoveToContent();
reader.ReadEndElement();
}
if (this.attributeValues.Count == 0)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new SecurityTokenException(SR.GetString(SR.SAMLAttributeShouldHaveOneValue)));
reader.MoveToContent();
reader.ReadEndElement();
}
public virtual void WriteXml(XmlDictionaryWriter writer, SamlSerializer samlSerializer, SecurityTokenSerializer keyInfoSerializer)
{
CheckObjectValidity();
if (writer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("writer"));
if (samlSerializer == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("samlSerializer"));
#pragma warning suppress 56506 // samlSerializer.DictionaryManager is never null.
SamlDictionary dictionary = samlSerializer.DictionaryManager.SamlDictionary;
writer.WriteStartElement(dictionary.PreferredPrefix.Value, dictionary.Attribute, dictionary.Namespace);
writer.WriteStartAttribute(dictionary.AttributeName, null);
writer.WriteString(this.name);
writer.WriteEndAttribute();
writer.WriteStartAttribute(dictionary.AttributeNamespace, null);
writer.WriteString(this.nameSpace);
writer.WriteEndAttribute();
for (int i = 0; i < this.attributeValues.Count; i++)
{
if (this.attributeValues[i] == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgument(SR.GetString(SR.SAMLAttributeValueCannotBeNull));
writer.WriteElementString(dictionary.PreferredPrefix.Value, dictionary.AttributeValue, dictionary.Namespace, this.attributeValues[i]);
}
writer.WriteEndElement();
}
}
}
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