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//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2015 Jb Evain
// Copyright (c) 2008 - 2011 Novell, Inc.
//
// Licensed under the MIT/X11 license.
//
using System;
using Mono.Collections.Generic;
namespace Mono.Cecil {
public enum SecurityAction : ushort {
Request = 1,
Demand = 2,
Assert = 3,
Deny = 4,
PermitOnly = 5,
LinkDemand = 6,
InheritDemand = 7,
RequestMinimum = 8,
RequestOptional = 9,
RequestRefuse = 10,
PreJitGrant = 11,
PreJitDeny = 12,
NonCasDemand = 13,
NonCasLinkDemand = 14,
NonCasInheritance = 15
}
public interface ISecurityDeclarationProvider : IMetadataTokenProvider {
bool HasSecurityDeclarations { get; }
Collection<SecurityDeclaration> SecurityDeclarations { get; }
}
public sealed class SecurityAttribute : ICustomAttribute {
TypeReference attribute_type;
internal Collection<CustomAttributeNamedArgument> fields;
internal Collection<CustomAttributeNamedArgument> properties;
public TypeReference AttributeType {
get { return attribute_type; }
set { attribute_type = value; }
}
public bool HasFields {
get { return !fields.IsNullOrEmpty (); }
}
public Collection<CustomAttributeNamedArgument> Fields {
get { return fields ?? (fields = new Collection<CustomAttributeNamedArgument> ()); }
}
public bool HasProperties {
get { return !properties.IsNullOrEmpty (); }
}
public Collection<CustomAttributeNamedArgument> Properties {
get { return properties ?? (properties = new Collection<CustomAttributeNamedArgument> ()); }
}
public SecurityAttribute (TypeReference attributeType)
{
this.attribute_type = attributeType;
}
bool ICustomAttribute.HasConstructorArguments {
get { return false; }
}
Collection<CustomAttributeArgument> ICustomAttribute.ConstructorArguments {
get { throw new NotSupportedException (); }
}
}
public sealed class SecurityDeclaration {
readonly internal uint signature;
byte [] blob;
readonly ModuleDefinition module;
internal bool resolved;
SecurityAction action;
internal Collection<SecurityAttribute> security_attributes;
public SecurityAction Action {
get { return action; }
set { action = value; }
}
public bool HasSecurityAttributes {
get {
Resolve ();
return !security_attributes.IsNullOrEmpty ();
}
}
public Collection<SecurityAttribute> SecurityAttributes {
get {
Resolve ();
return security_attributes ?? (security_attributes = new Collection<SecurityAttribute> ());
}
}
internal bool HasImage {
get { return module != null && module.HasImage; }
}
internal SecurityDeclaration (SecurityAction action, uint signature, ModuleDefinition module)
{
this.action = action;
this.signature = signature;
this.module = module;
}
public SecurityDeclaration (SecurityAction action)
{
this.action = action;
this.resolved = true;
}
public SecurityDeclaration (SecurityAction action, byte [] blob)
{
this.action = action;
this.resolved = false;
this.blob = blob;
}
public byte [] GetBlob ()
{
if (blob != null)
return blob;
if (!HasImage || signature == 0)
throw new NotSupportedException ();
return blob = module.Read (this, (declaration, reader) => reader.ReadSecurityDeclarationBlob (declaration.signature));
}
void Resolve ()
{
if (resolved || !HasImage)
return;
module.Read (this, (declaration, reader) => reader.ReadSecurityDeclarationSignature (declaration));
resolved = true;
}
}
static partial class Mixin {
public static bool GetHasSecurityDeclarations (
this ISecurityDeclarationProvider self,
ModuleDefinition module)
{
return module.HasImage () && module.Read (self, (provider, reader) => reader.HasSecurityDeclarations (provider));
}
public static Collection<SecurityDeclaration> GetSecurityDeclarations (
this ISecurityDeclarationProvider self,
ref Collection<SecurityDeclaration> variable,
ModuleDefinition module)
{
return module.HasImage ()
? module.Read (ref variable, self, (provider, reader) => reader.ReadSecurityDeclarations (provider))
: variable = new Collection<SecurityDeclaration>();
}
}
}
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