Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / clr / src / BCL / System / Security / Policy / PermissionRequestEvidence.cs / 1 / PermissionRequestEvidence.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== // PermissionRequestEvidence.cs // // Encapsulation of permission request as an evidence type. // namespace System.Security.Policy { using System.Runtime.Remoting; using System; using System.IO; using System.Security.Util; using System.Collections; using System.Runtime.Serialization; [Serializable] [System.Runtime.InteropServices.ComVisible(true)] sealed public class PermissionRequestEvidence : IBuiltInEvidence { private PermissionSet m_request; private PermissionSet m_optional; private PermissionSet m_denied; private String m_strRequest; private String m_strOptional; private String m_strDenied; private const char idRequest = (char)0; private const char idOptional = (char)1; private const char idDenied = (char)2; public PermissionRequestEvidence(PermissionSet request, PermissionSet optional, PermissionSet denied) { if (request == null) m_request = null; else m_request = request.Copy(); if (optional == null) m_optional = null; else m_optional = optional.Copy(); if (denied == null) m_denied = null; else m_denied = denied.Copy(); } internal PermissionRequestEvidence() { } public PermissionSet RequestedPermissions { get { return m_request; } } public PermissionSet OptionalPermissions { get { return m_optional; } } public PermissionSet DeniedPermissions { get { return m_denied; } } public PermissionRequestEvidence Copy() { return new PermissionRequestEvidence(m_request, m_optional, m_denied); } internal SecurityElement ToXml() { SecurityElement root = new SecurityElement( "System.Security.Policy.PermissionRequestEvidence" ); // If you hit this assert then most likely you are trying to change the name of this class. // This is ok as long as you change the hard coded string above and change the assert below. BCLDebug.Assert( this.GetType().FullName.Equals( "System.Security.Policy.PermissionRequestEvidence" ), "Class name changed!" ); root.AddAttribute( "version", "1" ); SecurityElement elem; if (m_request != null) { elem = new SecurityElement( "Request" ); elem.AddChild( m_request.ToXml() ); root.AddChild( elem ); } if (m_optional != null) { elem = new SecurityElement( "Optional" ); elem.AddChild( m_optional.ToXml() ); root.AddChild( elem ); } if (m_denied != null) { elem = new SecurityElement( "Denied" ); elem.AddChild( m_denied.ToXml() ); root.AddChild( elem ); } return root; } internal void CreateStrings() { if (m_strRequest == null && m_request != null) m_strRequest = m_request.ToXml().ToString(); if (m_strOptional == null && m_optional != null) m_strOptional = m_optional.ToXml().ToString(); if (m_strDenied == null && m_denied != null) m_strDenied = m_denied.ToXml().ToString(); } ///int IBuiltInEvidence.OutputToBuffer( char[] buffer, int position, bool verbose ) { CreateStrings(); int currentPosition = position; int numPermSetsPos = 0, numPermSets = 0; int tempLength; buffer[currentPosition++] = BuiltInEvidenceHelper.idPermissionRequestEvidence; if (verbose) { // Reserve some space to store the number of permission sets added numPermSetsPos = currentPosition; currentPosition += 2; } if (m_strRequest != null) { tempLength = m_strRequest.Length; if (verbose) { buffer[currentPosition++] = idRequest; BuiltInEvidenceHelper.CopyIntToCharArray(tempLength, buffer, currentPosition); currentPosition += 2; numPermSets++; } m_strRequest.CopyTo( 0, buffer, currentPosition, tempLength ); currentPosition += tempLength; } if (m_strOptional != null) { tempLength = m_strOptional.Length; if (verbose) { buffer[currentPosition++] = idOptional; BuiltInEvidenceHelper.CopyIntToCharArray(tempLength, buffer, currentPosition); currentPosition += 2; numPermSets++; } m_strOptional.CopyTo( 0, buffer, currentPosition, tempLength ); currentPosition += tempLength; } if (m_strDenied != null) { tempLength = m_strDenied.Length; if (verbose) { buffer[currentPosition++] = idDenied; BuiltInEvidenceHelper.CopyIntToCharArray(tempLength, buffer, currentPosition); currentPosition += 2; numPermSets++; } m_strDenied.CopyTo( 0, buffer, currentPosition, tempLength ); currentPosition += tempLength; } if (verbose) BuiltInEvidenceHelper.CopyIntToCharArray(numPermSets, buffer, numPermSetsPos); return currentPosition; } /// int IBuiltInEvidence.GetRequiredSize(bool verbose ) { CreateStrings(); int currentPosition = 1; if (m_strRequest != null) { if (verbose) currentPosition += 3; // identifier + length currentPosition += m_strRequest.Length; } if (m_strOptional != null) { if (verbose) currentPosition += 3; currentPosition += m_strOptional.Length; } if (m_strDenied != null) { if (verbose) currentPosition += 3; currentPosition += m_strDenied.Length; } if (verbose) currentPosition += 2; // Number of permission sets in the evidence return currentPosition; } /// int IBuiltInEvidence.InitFromBuffer( char[] buffer, int position ) { int numPermSets = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); position += 2; int tempLength; for (int i = 0; i < numPermSets; i++) { char psKind = buffer[position++]; tempLength = BuiltInEvidenceHelper.GetIntFromCharArray(buffer, position); position += 2; String tempStr = new String(buffer, position, tempLength); position += tempLength; Parser p = new Parser( tempStr ); PermissionSet psTemp = new PermissionSet(); psTemp.FromXml(p.GetTopElement()); switch(psKind) { case idRequest: m_strRequest = tempStr; m_request = psTemp; break; case idOptional: m_strOptional = tempStr; m_optional = psTemp; break; case idDenied: m_strDenied = tempStr; m_denied = psTemp; break; default: throw new SerializationException(Environment.GetResourceString("Serialization_UnableToFixup")); } } return position; } public override String ToString() { return ToXml().ToString(); } } }
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