Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Security / Policy / StrongName.cs / 1305376 / StrongName.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== //[....] // // // StrongName.cs // // StrongName is an IIdentity representing strong names. // namespace System.Security.Policy { using System.IO; using System.Reflection; using System.Security.Util; using System.Security.Permissions; using System.Diagnostics.Contracts; using CultureInfo = System.Globalization.CultureInfo; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] public sealed class StrongName : EvidenceBase, IIdentityPermissionFactory, IDelayEvaluatedEvidence { private StrongNamePublicKeyBlob m_publicKeyBlob; private String m_name; private Version m_version; // Delay evaluated evidence is for policy resolution only, so it doesn't make sense to save that // state away and then try to evaluate the strong name later. [NonSerialized] private RuntimeAssembly m_assembly = null; [NonSerialized] private bool m_wasUsed = false; internal StrongName() {} public StrongName( StrongNamePublicKeyBlob blob, String name, Version version ) : this(blob, name, version, null) { } internal StrongName(StrongNamePublicKeyBlob blob, String name, Version version, Assembly assembly) { if (name == null) throw new ArgumentNullException("name"); if (String.IsNullOrEmpty(name)) throw new ArgumentException(Environment.GetResourceString("Argument_EmptyStrongName")); if (blob == null) throw new ArgumentNullException("blob"); if (version == null) throw new ArgumentNullException("version"); Contract.EndContractBlock(); RuntimeAssembly rtAssembly = assembly as RuntimeAssembly; if (assembly != null && rtAssembly == null) throw new ArgumentException(Environment.GetResourceString("Argument_MustBeRuntimeAssembly"), "assembly"); m_publicKeyBlob = blob; m_name = name; m_version = version; m_assembly = rtAssembly; } public StrongNamePublicKeyBlob PublicKey { get { return m_publicKeyBlob; } } public String Name { get { return m_name; } } public Version Version { get { return m_version; } } bool IDelayEvaluatedEvidence.IsVerified { [System.Security.SecurityCritical] // auto-generated get { #if FEATURE_CAS_POLICY return m_assembly != null ? m_assembly.IsStrongNameVerified : true; #else // !FEATURE_CAS_POLICY return true; #endif // FEATURE_CAS_POLICY } } bool IDelayEvaluatedEvidence.WasUsed { get { return m_wasUsed; } } void IDelayEvaluatedEvidence.MarkUsed() { m_wasUsed = true; } internal static bool CompareNames( String asmName, String mcName ) { if (mcName.Length > 0 && mcName[mcName.Length-1] == '*' && mcName.Length - 1 <= asmName.Length) return String.Compare( mcName, 0, asmName, 0, mcName.Length - 1, StringComparison.OrdinalIgnoreCase) == 0; else return String.Compare( mcName, asmName, StringComparison.OrdinalIgnoreCase) == 0; } public IPermission CreateIdentityPermission( Evidence evidence ) { return new StrongNameIdentityPermission( m_publicKeyBlob, m_name, m_version ); } public override EvidenceBase Clone() { return new StrongName(m_publicKeyBlob, m_name, m_version); } public Object Copy() { return Clone(); } #if FEATURE_CAS_POLICY internal SecurityElement ToXml() { SecurityElement root = new SecurityElement( "StrongName" ); root.AddAttribute( "version", "1" ); if (m_publicKeyBlob != null) root.AddAttribute( "Key", System.Security.Util.Hex.EncodeHexString( m_publicKeyBlob.PublicKey ) ); if (m_name != null) root.AddAttribute( "Name", m_name ); if (m_version != null) root.AddAttribute( "Version", m_version.ToString() ); return root; } internal void FromXml (SecurityElement element) { if (element == null) throw new ArgumentNullException("element"); if (String.Compare(element.Tag, "StrongName", StringComparison.Ordinal) != 0) throw new ArgumentException(Environment.GetResourceString("Argument_InvalidXML")); Contract.EndContractBlock(); m_publicKeyBlob = null; m_version = null; string key = element.Attribute("Key"); if (key != null) m_publicKeyBlob = new StrongNamePublicKeyBlob(System.Security.Util.Hex.DecodeHexString(key)); m_name = element.Attribute("Name"); string version = element.Attribute("Version"); if (version != null) m_version = new Version(version); } public override String ToString() { return ToXml().ToString(); } #endif // FEATURE_CAS_POLICY public override bool Equals( Object o ) { StrongName that = (o as StrongName); return (that != null) && Equals( this.m_publicKeyBlob, that.m_publicKeyBlob ) && Equals( this.m_name, that.m_name ) && Equals( this.m_version, that.m_version ); } public override int GetHashCode() { if (m_publicKeyBlob != null) { return m_publicKeyBlob.GetHashCode(); } else if (m_name != null || m_version != null) { return (m_name == null ? 0 : m_name.GetHashCode()) + (m_version == null ? 0 : m_version.GetHashCode()); } else { return typeof( StrongName ).GetHashCode(); } } // INormalizeForIsolatedStorage is not implemented for startup perf // equivalent to INormalizeForIsolatedStorage.Normalize() internal Object Normalize() { MemoryStream ms = new MemoryStream(); BinaryWriter bw = new BinaryWriter(ms); bw.Write(m_publicKeyBlob.PublicKey); bw.Write(m_version.Major); bw.Write(m_name); ms.Position = 0; return ms; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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