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//
// AssemblyNameReference.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2011 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Globalization;
using System.Security.Cryptography;
using System.Text;
namespace Mono.Cecil {
public class AssemblyNameReference : IMetadataScope {
string name;
string culture;
Version version;
uint attributes;
byte [] public_key;
byte [] public_key_token;
AssemblyHashAlgorithm hash_algorithm;
byte [] hash;
internal MetadataToken token;
string full_name;
public string Name {
get { return name; }
set {
name = value;
full_name = null;
}
}
public string Culture {
get { return culture; }
set {
culture = value;
full_name = null;
}
}
public Version Version {
get { return version; }
set {
version = value;
full_name = null;
}
}
public AssemblyAttributes Attributes {
get { return (AssemblyAttributes) attributes; }
set { attributes = (uint) value; }
}
public bool HasPublicKey {
get { return attributes.GetAttributes ((uint) AssemblyAttributes.PublicKey); }
set { attributes = attributes.SetAttributes ((uint) AssemblyAttributes.PublicKey, value); }
}
public bool IsSideBySideCompatible {
get { return attributes.GetAttributes ((uint) AssemblyAttributes.SideBySideCompatible); }
set { attributes = attributes.SetAttributes ((uint) AssemblyAttributes.SideBySideCompatible, value); }
}
public bool IsRetargetable {
get { return attributes.GetAttributes ((uint) AssemblyAttributes.Retargetable); }
set { attributes = attributes.SetAttributes ((uint) AssemblyAttributes.Retargetable, value); }
}
public bool IsWindowsRuntime {
get { return attributes.GetAttributes ((uint) AssemblyAttributes.WindowsRuntime); }
set { attributes = attributes.SetAttributes ((uint) AssemblyAttributes.WindowsRuntime, value); }
}
public byte [] PublicKey {
get { return public_key ?? Empty<byte>.Array; }
set {
public_key = value;
HasPublicKey = !public_key.IsNullOrEmpty ();
public_key_token = Empty<byte>.Array;
full_name = null;
}
}
public byte [] PublicKeyToken {
get {
if (public_key_token.IsNullOrEmpty () && !public_key.IsNullOrEmpty ()) {
var hash = HashPublicKey ();
// we need the last 8 bytes in reverse order
public_key_token = new byte [8];
Array.Copy (hash, (hash.Length - 8), public_key_token, 0, 8);
Array.Reverse (public_key_token, 0, 8);
}
return public_key_token ?? Empty<byte>.Array;
}
set {
public_key_token = value;
full_name = null;
}
}
byte [] HashPublicKey ()
{
HashAlgorithm algorithm;
switch (hash_algorithm) {
case AssemblyHashAlgorithm.Reserved:
#if SILVERLIGHT
throw new NotSupportedException ();
#else
algorithm = MD5.Create ();
break;
#endif
default:
// None default to SHA1
#if SILVERLIGHT
algorithm = new SHA1Managed ();
break;
#else
algorithm = SHA1.Create ();
break;
#endif
}
using (algorithm)
return algorithm.ComputeHash (public_key);
}
public virtual MetadataScopeType MetadataScopeType {
get { return MetadataScopeType.AssemblyNameReference; }
}
public string FullName {
get {
if (full_name != null)
return full_name;
const string sep = ", ";
var builder = new StringBuilder ();
builder.Append (name);
if (version != null) {
builder.Append (sep);
builder.Append ("Version=");
builder.Append (version.ToString ());
}
builder.Append (sep);
builder.Append ("Culture=");
builder.Append (string.IsNullOrEmpty (culture) ? "neutral" : culture);
builder.Append (sep);
builder.Append ("PublicKeyToken=");
var pk_token = PublicKeyToken;
if (!pk_token.IsNullOrEmpty () && pk_token.Length > 0) {
for (int i = 0 ; i < pk_token.Length ; i++) {
builder.Append (pk_token [i].ToString ("x2"));
}
} else
builder.Append ("null");
return full_name = builder.ToString ();
}
}
public static AssemblyNameReference Parse (string fullName)
{
if (fullName == null)
throw new ArgumentNullException ("fullName");
if (fullName.Length == 0)
throw new ArgumentException ("Name can not be empty");
var name = new AssemblyNameReference ();
var tokens = fullName.Split (',');
for (int i = 0; i < tokens.Length; i++) {
var token = tokens [i].Trim ();
if (i == 0) {
name.Name = token;
continue;
}
var parts = token.Split ('=');
if (parts.Length != 2)
throw new ArgumentException ("Malformed name");
switch (parts [0].ToLowerInvariant ()) {
case "version":
name.Version = new Version (parts [1]);
break;
case "culture":
name.Culture = parts [1];
break;
case "publickeytoken":
var pk_token = parts [1];
if (pk_token == "null")
break;
name.PublicKeyToken = new byte [pk_token.Length / 2];
for (int j = 0; j < name.PublicKeyToken.Length; j++)
name.PublicKeyToken [j] = Byte.Parse (pk_token.Substring (j * 2, 2), NumberStyles.HexNumber);
break;
}
}
return name;
}
public AssemblyHashAlgorithm HashAlgorithm {
get { return hash_algorithm; }
set { hash_algorithm = value; }
}
public virtual byte [] Hash {
get { return hash; }
set { hash = value; }
}
public MetadataToken MetadataToken {
get { return token; }
set { token = value; }
}
internal AssemblyNameReference ()
{
}
public AssemblyNameReference (string name, Version version)
{
if (name == null)
throw new ArgumentNullException ("name");
this.name = name;
this.version = version;
this.hash_algorithm = AssemblyHashAlgorithm.None;
this.token = new MetadataToken (TokenType.AssemblyRef);
}
public override string ToString ()
{
return this.FullName;
}
}
}
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