Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Permissions / PublisherIdentityPermission.cs / 1 / PublisherIdentityPermission.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // PublisherIdentityPermission.cs // namespace System.Security.Permissions { using System; using SecurityElement = System.Security.SecurityElement; using X509Certificate = System.Security.Cryptography.X509Certificates.X509Certificate; using System.Security.Util; using System.IO; using System.Collections; using System.Globalization; [System.Runtime.InteropServices.ComVisible(true)] [Serializable()] sealed public class PublisherIdentityPermission : CodeAccessPermission, IBuiltInPermission { //------------------------------------------------------ // // PRIVATE STATE DATA // //----------------------------------------------------- private bool m_unrestricted; private X509Certificate[] m_certs; //----------------------------------------------------- // // PUBLIC CONSTRUCTORS // //----------------------------------------------------- public PublisherIdentityPermission(PermissionState state) { if (state == PermissionState.Unrestricted) { if(CodeAccessSecurityEngine.DoesFullTrustMeanFullTrust()) m_unrestricted = true; else throw new ArgumentException(Environment.GetResourceString("Argument_UnrestrictedIdentityPermission")); } else if (state == PermissionState.None) { m_unrestricted = false; } else { throw new ArgumentException(Environment.GetResourceString("Argument_InvalidPermissionState")); } } public PublisherIdentityPermission( X509Certificate certificate ) { Certificate = certificate; } //------------------------------------------------------ // // PUBLIC ACCESSOR METHODS // //----------------------------------------------------- public X509Certificate Certificate { set { CheckCertificate(value); m_unrestricted = false; m_certs = new X509Certificate[1]; m_certs[0] = new X509Certificate(value); } get { if(m_certs == null || m_certs.Length < 1) return null; if(m_certs.Length > 1) throw new NotSupportedException(Environment.GetResourceString("NotSupported_AmbiguousIdentity")); if(m_certs[0] == null) return null; return new X509Certificate(m_certs[0]); } } //------------------------------------------------------ // // PRIVATE AND PROTECTED HELPERS FOR ACCESSORS AND CONSTRUCTORS // //------------------------------------------------------ private static void CheckCertificate( X509Certificate certificate ) { if (certificate == null) { throw new ArgumentNullException( "certificate" ); } if (certificate.GetRawCertData() == null) { throw new ArgumentException(Environment.GetResourceString("Argument_UninitializedCertificate")); } } //----------------------------------------------------- // // CODEACCESSPERMISSION IMPLEMENTATION // //------------------------------------------------------ //----------------------------------------------------- // // IPERMISSION IMPLEMENTATION // //----------------------------------------------------- public override IPermission Copy() { PublisherIdentityPermission perm = new PublisherIdentityPermission(PermissionState.None); perm.m_unrestricted = m_unrestricted; if(this.m_certs != null) { perm.m_certs = new X509Certificate[this.m_certs.Length]; int n; for(n = 0; n < this.m_certs.Length; n++) perm.m_certs[n] = (m_certs[n] == null ? null : new X509Certificate(m_certs[n])); } return perm; } public override bool IsSubsetOf(IPermission target) { if (target == null) { if(m_unrestricted) return false; if(m_certs == null) return true; if(m_certs.Length == 0) return true; return false; } PublisherIdentityPermission that = target as PublisherIdentityPermission; if(that == null) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); if(that.m_unrestricted) return true; if(m_unrestricted) return false; if(this.m_certs != null) { foreach(X509Certificate certThis in this.m_certs) { bool bOK = false; if(that.m_certs != null) { foreach(X509Certificate certThat in that.m_certs) { if(certThis.Equals(certThat)) { bOK = true; break; } } } if(!bOK) return false; } } return true; } public override IPermission Intersect(IPermission target) { if (target == null) return null; PublisherIdentityPermission that = target as PublisherIdentityPermission; if(that == null) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); if(this.m_unrestricted && that.m_unrestricted) { PublisherIdentityPermission res = new PublisherIdentityPermission(PermissionState.None); res.m_unrestricted = true; return res; } if(this.m_unrestricted) return that.Copy(); if(that.m_unrestricted) return this.Copy(); if(this.m_certs == null || that.m_certs == null || this.m_certs.Length == 0 || that.m_certs.Length == 0) return null; ArrayList alCerts = new ArrayList(); foreach(X509Certificate certThis in this.m_certs) { foreach(X509Certificate certThat in that.m_certs) { if(certThis.Equals(certThat)) alCerts.Add(new X509Certificate(certThis)); } } if(alCerts.Count == 0) return null; PublisherIdentityPermission result = new PublisherIdentityPermission(PermissionState.None); result.m_certs = (X509Certificate[])alCerts.ToArray(typeof(X509Certificate)); return result; } public override IPermission Union(IPermission target) { if (target == null) { if((this.m_certs == null || this.m_certs.Length == 0) && !this.m_unrestricted) return null; return this.Copy(); } PublisherIdentityPermission that = target as PublisherIdentityPermission; if(that == null) throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)); if(this.m_unrestricted || that.m_unrestricted) { PublisherIdentityPermission res = new PublisherIdentityPermission(PermissionState.None); res.m_unrestricted = true; return res; } if (this.m_certs == null || this.m_certs.Length == 0) { if(that.m_certs == null || that.m_certs.Length == 0) return null; return that.Copy(); } if(that.m_certs == null || that.m_certs.Length == 0) return this.Copy(); ArrayList alCerts = new ArrayList(); foreach(X509Certificate certThis in this.m_certs) alCerts.Add(certThis); foreach(X509Certificate certThat in that.m_certs) { bool bDupe = false; foreach(X509Certificate cert in alCerts) { if(certThat.Equals(cert)) { bDupe = true; break; } } if(!bDupe) alCerts.Add(certThat); } PublisherIdentityPermission result = new PublisherIdentityPermission(PermissionState.None); result.m_certs = (X509Certificate[])alCerts.ToArray(typeof(X509Certificate)); return result; } public override void FromXml(SecurityElement esd) { m_unrestricted = false; m_certs = null; CodeAccessPermission.ValidateElement( esd, this ); String unr = esd.Attribute( "Unrestricted" ); if(unr != null && String.Compare(unr, "true", StringComparison.OrdinalIgnoreCase) == 0) { m_unrestricted = true; return; } String elem = esd.Attribute( "X509v3Certificate" ); ArrayList al = new ArrayList(); if(elem != null) al.Add(new X509Certificate(System.Security.Util.Hex.DecodeHexString(elem))); ArrayList alChildren = esd.Children; if(alChildren != null) { foreach(SecurityElement child in alChildren) { elem = child.Attribute( "X509v3Certificate" ); if(elem != null) al.Add(new X509Certificate(System.Security.Util.Hex.DecodeHexString(elem))); } } if(al.Count != 0) m_certs = (X509Certificate[])al.ToArray(typeof(X509Certificate)); } public override SecurityElement ToXml() { SecurityElement esd = CodeAccessPermission.CreatePermissionElement( this, "System.Security.Permissions.PublisherIdentityPermission" ); if (m_unrestricted) esd.AddAttribute( "Unrestricted", "true" ); else if (m_certs != null) { if (m_certs.Length == 1) esd.AddAttribute( "X509v3Certificate", m_certs[0].GetRawCertDataString() ); else { int n; for(n = 0; n < m_certs.Length; n++) { SecurityElement child = new SecurityElement("Cert"); child.AddAttribute( "X509v3Certificate", m_certs[n].GetRawCertDataString() ); esd.AddChild(child); } } } return esd; } ///int IBuiltInPermission.GetTokenIndex() { return PublisherIdentityPermission.GetTokenIndex(); } internal static int GetTokenIndex() { return BuiltInPermissionIndex.PublisherIdentityPermissionIndex; } } }
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