deltavr multiplayer 2.0
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//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// Copyright (c) 2008 - 2015 Jb Evain
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// Copyright (c) 2008 - 2011 Novell, Inc.
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//
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// Licensed under the MIT/X11 license.
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//
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#if !NET_CORE
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using System;
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using System.Security;
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using SSP = System.Security.Permissions;
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namespace MonoFN.Cecil.Rocks {
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#if UNITY_EDITOR
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public
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#endif
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static class SecurityDeclarationRocks {
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public static PermissionSet ToPermissionSet (this SecurityDeclaration self)
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{
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if (self == null)
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throw new ArgumentNullException ("self");
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PermissionSet set;
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if (TryProcessPermissionSetAttribute (self, out set))
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return set;
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return CreatePermissionSet (self);
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}
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static bool TryProcessPermissionSetAttribute (SecurityDeclaration declaration, out PermissionSet set)
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{
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set = null;
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if (!declaration.HasSecurityAttributes && declaration.SecurityAttributes.Count != 1)
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return false;
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var security_attribute = declaration.SecurityAttributes [0];
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if (!security_attribute.AttributeType.IsTypeOf ("System.Security.Permissions", "PermissionSetAttribute"))
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return false;
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var attribute = new SSP.PermissionSetAttribute ((SSP.SecurityAction)declaration.Action);
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var named_argument = security_attribute.Properties [0];
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string value = (string)named_argument.Argument.Value;
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switch (named_argument.Name) {
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case "XML":
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attribute.XML = value;
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break;
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case "Name":
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attribute.Name = value;
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break;
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default:
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throw new NotImplementedException (named_argument.Name);
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}
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set = attribute.CreatePermissionSet ();
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return true;
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}
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static PermissionSet CreatePermissionSet (SecurityDeclaration declaration)
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{
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var set = new PermissionSet (SSP.PermissionState.None);
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foreach (var attribute in declaration.SecurityAttributes) {
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var permission = CreatePermission (declaration, attribute);
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set.AddPermission (permission);
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}
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return set;
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}
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static IPermission CreatePermission (SecurityDeclaration declaration, SecurityAttribute attribute)
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{
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var attribute_type = Type.GetType (attribute.AttributeType.FullName);
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if (attribute_type == null)
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throw new ArgumentException ("attribute");
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var security_attribute = CreateSecurityAttribute (attribute_type, declaration);
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if (security_attribute == null)
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throw new InvalidOperationException ();
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CompleteSecurityAttribute (security_attribute, attribute);
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return security_attribute.CreatePermission ();
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}
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static void CompleteSecurityAttribute (SSP.SecurityAttribute security_attribute, SecurityAttribute attribute)
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{
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if (attribute.HasFields)
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CompleteSecurityAttributeFields (security_attribute, attribute);
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if (attribute.HasProperties)
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CompleteSecurityAttributeProperties (security_attribute, attribute);
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}
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static void CompleteSecurityAttributeFields (SSP.SecurityAttribute security_attribute, SecurityAttribute attribute)
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{
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var type = security_attribute.GetType ();
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foreach (var named_argument in attribute.Fields)
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type.GetField (named_argument.Name).SetValue (security_attribute, named_argument.Argument.Value);
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}
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static void CompleteSecurityAttributeProperties (SSP.SecurityAttribute security_attribute, SecurityAttribute attribute)
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{
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var type = security_attribute.GetType ();
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foreach (var named_argument in attribute.Properties)
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type.GetProperty (named_argument.Name).SetValue (security_attribute, named_argument.Argument.Value, null);
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}
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static SSP.SecurityAttribute CreateSecurityAttribute (Type attribute_type, SecurityDeclaration declaration)
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{
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SSP.SecurityAttribute security_attribute;
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try {
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security_attribute = (SSP.SecurityAttribute)Activator.CreateInstance (
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attribute_type, new object [] { (SSP.SecurityAction)declaration.Action });
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}
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catch (MissingMethodException) {
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security_attribute = (SSP.SecurityAttribute)Activator.CreateInstance (attribute_type, new object [0]);
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}
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return security_attribute;
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}
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public static SecurityDeclaration ToSecurityDeclaration (this PermissionSet self, SecurityAction action, ModuleDefinition module)
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{
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if (self == null)
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throw new ArgumentNullException ("self");
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if (module == null)
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throw new ArgumentNullException ("module");
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var declaration = new SecurityDeclaration (action);
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var attribute = new SecurityAttribute (
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module.TypeSystem.LookupType ("System.Security.Permissions", "PermissionSetAttribute"));
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attribute.Properties.Add (
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new CustomAttributeNamedArgument (
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"XML",
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new CustomAttributeArgument (
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module.TypeSystem.String, self.ToXml ().ToString ())));
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declaration.SecurityAttributes.Add (attribute);
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return declaration;
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}
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}
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}
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#endif
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