Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / IdentityModel / System / IdentityModel / Claims / X509CertificateClaimSet.cs / 1305376 / X509CertificateClaimSet.cs
//------------------------------------------------------------ // Copyright (c) Microsoft Corporation. All rights reserved. //----------------------------------------------------------- namespace System.IdentityModel.Claims { using System.Collections.Generic; using System.IdentityModel.Policy; using System.Net.Mail; using System.Security.Cryptography; using System.Security.Cryptography.X509Certificates; using System.Security.Principal; public class X509CertificateClaimSet : ClaimSet, IIdentityInfo, IDisposable { X509Certificate2 certificate; DateTime expirationTime = SecurityUtils.MinUtcDateTime; ClaimSet issuer; X509Identity identity; X509ChainElementCollection elements; IListclaims; int index; bool disposed = false; public X509CertificateClaimSet(X509Certificate2 certificate) : this(certificate, true) { } internal X509CertificateClaimSet(X509Certificate2 certificate, bool clone) { if (certificate == null) throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("certificate"); this.certificate = clone ? new X509Certificate2(certificate) : certificate; } X509CertificateClaimSet(X509CertificateClaimSet from) : this(from.X509Certificate, true) { } X509CertificateClaimSet(X509ChainElementCollection elements, int index) { this.elements = elements; this.index = index; this.certificate = elements[index].Certificate; } public override Claim this[int index] { get { ThrowIfDisposed(); EnsureClaims(); return this.claims[index]; } } public override int Count { get { ThrowIfDisposed(); EnsureClaims(); return this.claims.Count; } } IIdentity IIdentityInfo.Identity { get { ThrowIfDisposed(); if (this.identity == null) this.identity = new X509Identity(this.certificate, false, false); return this.identity; } } public DateTime ExpirationTime { get { ThrowIfDisposed(); if (this.expirationTime == SecurityUtils.MinUtcDateTime) this.expirationTime = this.certificate.NotAfter.ToUniversalTime(); return this.expirationTime; } } public override ClaimSet Issuer { get { ThrowIfDisposed(); if (this.issuer == null) { if (this.elements == null) { X509Chain chain = new X509Chain(); chain.ChainPolicy.RevocationMode = X509RevocationMode.NoCheck; chain.Build(certificate); this.index = 0; this.elements = chain.ChainElements; } if (this.index + 1 < this.elements.Count) { this.issuer = new X509CertificateClaimSet(this.elements, this.index + 1); this.elements = null; } // SelfSigned? else if (StringComparer.OrdinalIgnoreCase.Equals(this.certificate.SubjectName.Name, this.certificate.IssuerName.Name)) this.issuer = this; else this.issuer = new X500DistinguishedNameClaimSet(this.certificate.IssuerName); } return this.issuer; } } public X509Certificate2 X509Certificate { get { ThrowIfDisposed(); return this.certificate; } } internal X509CertificateClaimSet Clone() { ThrowIfDisposed(); return new X509CertificateClaimSet(this); } public void Dispose() { if (!this.disposed) { this.disposed = true; SecurityUtils.DisposeIfNecessary(this.identity); if (this.issuer != null) { if (this.issuer != this) { SecurityUtils.DisposeIfNecessary(this.issuer as IDisposable); } } if (this.elements != null) { for (int i = this.index + 1; i < this.elements.Count; ++i) { this.elements[i].Certificate.Reset(); } } this.certificate.Reset(); } } IList InitializeClaimsCore() { List claims = new List (); byte[] thumbprint = this.certificate.GetCertHash(); claims.Add(new Claim(ClaimTypes.Thumbprint, thumbprint, Rights.Identity)); claims.Add(new Claim(ClaimTypes.Thumbprint, thumbprint, Rights.PossessProperty)); // Ordering SubjectName, Dns, SimpleName, Email, Upn string value = this.certificate.SubjectName.Name; if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateX500DistinguishedNameClaim(this.certificate.SubjectName)); value = this.certificate.GetNameInfo(X509NameType.DnsName, false); if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateDnsClaim(value)); value = this.certificate.GetNameInfo(X509NameType.SimpleName, false); if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateNameClaim(value)); value = this.certificate.GetNameInfo(X509NameType.EmailName, false); if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateMailAddressClaim(new MailAddress(value))); value = this.certificate.GetNameInfo(X509NameType.UpnName, false); if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateUpnClaim(value)); value = this.certificate.GetNameInfo(X509NameType.UrlName, false); if (!string.IsNullOrEmpty(value)) claims.Add(Claim.CreateUriClaim(new Uri(value))); RSA rsa = this.certificate.PublicKey.Key as RSA; if (rsa != null) claims.Add(Claim.CreateRsaClaim(rsa)); return claims; } void EnsureClaims() { if (this.claims != null) return; this.claims = InitializeClaimsCore(); } static bool SupportedClaimType(string claimType) { return claimType == null || ClaimTypes.Thumbprint.Equals(claimType) || ClaimTypes.X500DistinguishedName.Equals(claimType) || ClaimTypes.Dns.Equals(claimType) || ClaimTypes.Name.Equals(claimType) || ClaimTypes.Email.Equals(claimType) || ClaimTypes.Upn.Equals(claimType) || ClaimTypes.Uri.Equals(claimType) || ClaimTypes.Rsa.Equals(claimType); } // Note: null string represents any. public override IEnumerable FindClaims(string claimType, string right) { ThrowIfDisposed(); if (!SupportedClaimType(claimType) || !ClaimSet.SupportedRight(right)) { yield break; } else if (this.claims == null && ClaimTypes.Thumbprint.Equals(claimType)) { if (right == null || Rights.Identity.Equals(right)) { yield return new Claim(ClaimTypes.Thumbprint, this.certificate.GetCertHash(), Rights.Identity); } if (right == null || Rights.PossessProperty.Equals(right)) { yield return new Claim(ClaimTypes.Thumbprint, this.certificate.GetCertHash(), Rights.PossessProperty); } } else if (this.claims == null && ClaimTypes.Dns.Equals(claimType)) { if (right == null || Rights.PossessProperty.Equals(right)) { string value = this.certificate.GetNameInfo(X509NameType.DnsName, false); if (!string.IsNullOrEmpty(value)) { yield return Claim.CreateDnsClaim(value); } } } else { EnsureClaims(); bool anyClaimType = (claimType == null); bool anyRight = (right == null); for (int i = 0; i < this.claims.Count; ++i) { Claim claim = this.claims[i]; if ((claim != null) && (anyClaimType || claimType.Equals(claim.ClaimType)) && (anyRight || right.Equals(claim.Right))) { yield return claim; } } } } public override IEnumerator GetEnumerator() { ThrowIfDisposed(); EnsureClaims(); return this.claims.GetEnumerator(); } public override string ToString() { return this.disposed ? base.ToString() : SecurityUtils.ClaimSetToString(this); } void ThrowIfDisposed() { if (this.disposed) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(this.GetType().FullName)); } } class X500DistinguishedNameClaimSet : DefaultClaimSet, IIdentityInfo { IIdentity identity; public X500DistinguishedNameClaimSet(X500DistinguishedName x500DistinguishedName) { if (x500DistinguishedName == null) throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("x500DistinguishedName"); this.identity = new X509Identity(x500DistinguishedName); List claims = new List (2); claims.Add(new Claim(ClaimTypes.X500DistinguishedName, x500DistinguishedName, Rights.Identity)); claims.Add(Claim.CreateX500DistinguishedNameClaim(x500DistinguishedName)); Initialize(ClaimSet.Anonymous, claims); } public IIdentity Identity { get { return this.identity; } } } } class X509Identity : GenericIdentity, IDisposable { const string X509 = "X509"; const string Thumbprint = "; "; X500DistinguishedName x500DistinguishedName; X509Certificate2 certificate; string name; bool disposed = false; bool disposable = true; public X509Identity(X509Certificate2 certificate) : this(certificate, true, true) { } public X509Identity(X500DistinguishedName x500DistinguishedName) : base(X509, X509) { this.x500DistinguishedName = x500DistinguishedName; } internal X509Identity(X509Certificate2 certificate, bool clone, bool disposable) : base(X509, X509) { this.certificate = clone ? new X509Certificate2(certificate) : certificate; this.disposable = clone || disposable; } public override string Name { get { ThrowIfDisposed(); if (this.name == null) { // // DCR 48092: PrincipalPermission authorization using certificates could cause Elevation of Privilege. // because there could be duplicate subject name. In order to be more unique, we use SubjectName + Thumbprint // instead // this.name = GetName() + Thumbprint + this.certificate.Thumbprint; } return this.name; } } string GetName() { if (this.x500DistinguishedName != null) return this.x500DistinguishedName.Name; string value = this.certificate.SubjectName.Name; if (!string.IsNullOrEmpty(value)) return value; value = this.certificate.GetNameInfo(X509NameType.DnsName, false); if (!string.IsNullOrEmpty(value)) return value; value = this.certificate.GetNameInfo(X509NameType.SimpleName, false); if (!string.IsNullOrEmpty(value)) return value; value = this.certificate.GetNameInfo(X509NameType.EmailName, false); if (!string.IsNullOrEmpty(value)) return value; value = this.certificate.GetNameInfo(X509NameType.UpnName, false); if (!string.IsNullOrEmpty(value)) return value; return String.Empty; } public X509Identity Clone() { return this.certificate != null ? new X509Identity(this.certificate) : new X509Identity(this.x500DistinguishedName); } public void Dispose() { if (this.disposable && !this.disposed) { this.disposed = true; if (this.certificate != null) { this.certificate.Reset(); } } } void ThrowIfDisposed() { if (this.disposed) { throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ObjectDisposedException(this.GetType().FullName)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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