Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Policy / StrongName.cs / 1 / 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.Security.Util; using System.Security.Permissions; using CultureInfo = System.Globalization.CultureInfo; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class StrongName : IIdentityPermissionFactory, IBuiltInEvidence { private StrongNamePublicKeyBlob m_publicKeyBlob; private String m_name; private Version m_version; internal StrongName() {} public StrongName( StrongNamePublicKeyBlob blob, String name, Version version ) { if (name == null) throw new ArgumentNullException( "name" ); if (name.Equals( "" )) throw new ArgumentException( Environment.GetResourceString( "Argument_EmptyStrongName" ) ); if (blob == null) throw new ArgumentNullException( "blob" ); if (version == null) throw new ArgumentNullException( "version" ); m_publicKeyBlob = blob; m_name = name; m_version = version; } internal StrongName( StrongNamePublicKeyBlob blob, String name, Version version, bool trash ) { m_publicKeyBlob = blob; m_name = name; m_version = version; } public StrongNamePublicKeyBlob PublicKey { get { return m_publicKeyBlob; } } public String Name { get { return m_name; } } public Version Version { get { return m_version; } } 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 Object Copy() { return new StrongName( m_publicKeyBlob, m_name, m_version ); } 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")); 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(); } 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(); } } ///int IBuiltInEvidence.OutputToBuffer( char[] buffer, int position, bool verbose ) { // StrongNames have a byte[], a string, and a Version (4 ints). // Copy in the id, the byte[], the four ints, and then the string. buffer[position++] = BuiltInEvidenceHelper.idStrongName; int lengthPK = m_publicKeyBlob.PublicKey.Length; if (verbose) { BuiltInEvidenceHelper.CopyIntToCharArray(lengthPK, buffer, position); position += 2; } Buffer.InternalBlockCopy(m_publicKeyBlob.PublicKey, 0, buffer, position * 2, lengthPK); position += ((lengthPK - 1) / 2) + 1; BuiltInEvidenceHelper.CopyIntToCharArray( m_version.Major, buffer, position ); BuiltInEvidenceHelper.CopyIntToCharArray( m_version.Minor, buffer, position + 2 ); BuiltInEvidenceHelper.CopyIntToCharArray( m_version.Build, buffer, position + 4 ); BuiltInEvidenceHelper.CopyIntToCharArray( m_version.Revision, buffer, position + 6 ); position += 8; int lengthName = m_name.Length; if (verbose) { BuiltInEvidenceHelper.CopyIntToCharArray(lengthName, buffer, position); position += 2; } m_name.CopyTo( 0, buffer, position, lengthName ); return lengthName + position; } /// int IBuiltInEvidence.GetRequiredSize(bool verbose ) { int length = ((m_publicKeyBlob.PublicKey.Length - 1) / 2) + 1; // blob if (verbose) length += 2; // length of blob length += 8; // version length += m_name.Length;// Name if (verbose) length += 2; // length of name length += 1; // identifier return length; } /// int IBuiltInEvidence.InitFromBuffer( char[] buffer, int position ) { int length = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); position += 2; m_publicKeyBlob = new StrongNamePublicKeyBlob(); m_publicKeyBlob.PublicKey = new byte[length]; int lengthInChars = ((length - 1) / 2) + 1; Buffer.InternalBlockCopy(buffer, position * 2, m_publicKeyBlob.PublicKey, 0, length); position += lengthInChars; int major = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); int minor = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position + 2); int build = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position + 4); int revision = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position + 6); m_version = new Version(major, minor, build, revision); position += 8; length = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); position += 2; m_name = new String(buffer, position, length ); return position + length; } // 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; } } }
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