mcs/class/corlib/System.Reflection/AssemblyName.cs

   1 //
   2 // System.Reflection/AssemblyName.cs
   3 //
   4 // Authors:
   5 //      Paolo Molaro (lupus@ximian.com)
   6 //      Sebastien Pouliot  <sebastien@ximian.com>
   7 //
   8 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   9 // Portions (C) 2002 Motus Technologies Inc. (http://www.motus.com)
  10 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Configuration.Assemblies;
  33 using System.Globalization;
  34 using System.Runtime.Serialization;
  35 using System.Security.Cryptography;
  36 using System.Security.Permissions;
  37 using System.Text;
  38 using System.Runtime.InteropServices;
  39 using System.Runtime.CompilerServices;
  40
  41 using Mono.Security;
  42
  43 namespace System.Reflection {
  44
  45 // References:
  46 // a.   Uniform Resource Identifiers (URI): Generic Syntax
  47 //      http://www.ietf.org/rfc/rfc2396.txt
  48
  49         [Serializable]
  50         [MonoTODO ("Fix serialization compatibility with MS.NET")]
  51         public sealed class AssemblyName  : ICloneable, ISerializable, IDeserializationCallback {
  52                 string name;
  53                 string codebase;
  54                 int major, minor, build, revision;
  55                 CultureInfo cultureinfo;
  56                 AssemblyNameFlags flags;
  57                 AssemblyHashAlgorithm hashalg;
  58                 StrongNameKeyPair keypair;
  59                 byte[] publicKey;
  60                 byte[] keyToken;
  61                 AssemblyVersionCompatibility versioncompat;
  62                 Version version;
  63
  64                 public AssemblyName ()
  65                 {
  66                         // defaults
  67                         versioncompat = AssemblyVersionCompatibility.SameMachine;
  68                 }
  69
  70 #if NET_2_0
  71                 public AssemblyName (string assemblyName)
  72                 {
  73                         name = assemblyName;
  74                 }
  75 #endif
  76
  77                 internal AssemblyName (SerializationInfo si, StreamingContext sc)
  78                 {
  79                         name = si.GetString ("_Name");
  80                         codebase = si.GetString ("_CodeBase");
  81                         version = (Version)si.GetValue ("_Version", typeof (Version));
  82                         publicKey = (byte[])si.GetValue ("_PublicKey", typeof (byte[]));
  83                         keyToken = (byte[])si.GetValue ("_PublicToken", typeof (byte[]));
  84                         hashalg = (AssemblyHashAlgorithm)si.GetValue ("_HashAlgorithm", typeof (AssemblyHashAlgorithm));
  85                         keypair = (StrongNameKeyPair)si.GetValue ("_StrongNameKeyPair", typeof (StrongNameKeyPair));
  86                         versioncompat = (AssemblyVersionCompatibility)si.GetValue ("_VersionCompatibility", typeof (AssemblyVersionCompatibility));
  87                         flags = (AssemblyNameFlags)si.GetValue ("_Flags", typeof (AssemblyNameFlags));
  88                         int lcid = si.GetInt32 ("_CultureInfo");
  89                         if (lcid != -1) cultureinfo = new CultureInfo (lcid);
  90                 }
  91
  92                 public string Name {
  93                         get { return name; }
  94                         set { name = value; }
  95                 }
  96
  97                 public string CodeBase {
  98                         get { return codebase; }
  99                         set { codebase = value; }
 100                 }
 101
 102                 public string EscapedCodeBase {
 103                         get {
 104                                 if (codebase == null)
 105                                         return null;
 106                                 return Uri.EscapeString (codebase, false, true, true);
 107                         }
 108                 }
 109
 110                 public CultureInfo CultureInfo {
 111                         get { return cultureinfo; }
 112                         set { cultureinfo = value; }
 113                 }
 114
 115                 public AssemblyNameFlags Flags {
 116                         get { return flags; }
 117                         set { flags = value; }
 118                 }
 119
 120                 public string FullName {
 121                         get {
 122                                 if (name == null)
 123                                         return null;
 124                                 StringBuilder fname = new StringBuilder ();
 125                                 fname.Append (name);
 126                                 if (Version.ToString () != "0.0.0.0") {
 127                                         fname.Append (", Version=");
 128                                         fname.Append (Version.ToString ());
 129                                 }
 130                                 if (cultureinfo != null) {
 131                                         fname.Append (", Culture=");
 132                                         if (cultureinfo.LCID == CultureInfo.InvariantCulture.LCID)
 133                                                 fname.Append ("neutral");
 134                                         else
 135                                                 fname.Append (cultureinfo.Name);
 136                                 }
 137                                 byte[] pub_tok = GetPublicKeyToken ();
 138                                 if (pub_tok != null) {
 139                                         if (pub_tok.Length == 0)
 140                                                 fname.Append (", PublicKeyToken=null");
 141                                         else {
 142                                                 fname.Append (", PublicKeyToken=");
 143                                                 for (int i = 0; i < pub_tok.Length; i++)
 144                                                         fname.Append (pub_tok[i].ToString ("x2"));
 145                                         }
 146                                 }
 147                                 return fname.ToString ();
 148                         }
 149                 }
 150
 151                 public AssemblyHashAlgorithm HashAlgorithm {
 152                         get { return hashalg; }
 153                         set { hashalg = value; }
 154                 }
 155
 156                 public StrongNameKeyPair KeyPair {
 157                         get { return keypair; }
 158                         set { keypair = value; }
 159                 }
 160
 161                 public Version Version {
 162                         get {
 163                                 if (version != null) return version;
 164
 165                                 if (name == null)
 166                                         return null;
 167                                 if (build == -1)
 168                                         version = new Version (major, minor);
 169                                 else
 170                                         if (revision == -1)
 171                                                 version = new Version (major, minor, build);
 172                                 else
 173                                         version = new Version (major, minor, build, revision);
 174
 175                                 return version;
 176                         }
 177
 178                         set {
 179                                 major = value.Major;
 180                                 minor = value.Minor;
 181                                 build = value.Build;
 182                                 revision = value.Revision;
 183                                 version = value;
 184                         }
 185                 }
 186
 187                 public AssemblyVersionCompatibility VersionCompatibility {
 188                         get { return versioncompat; }
 189                         set { versioncompat = value; }
 190                 }
 191
 192                 public override string ToString ()
 193                 {
 194                         string name = FullName;
 195                         return (name != null) ? name : base.ToString ();
 196                 }
 197
 198                 public byte[] GetPublicKey()
 199                 {
 200                         // to match MS implementation -- funny one
 201                         if (publicKey != null)
 202                                 return publicKey;
 203                         else if (name == null)
 204                                 return null;
 205                         else
 206                                 return new byte [0];
 207                 }
 208
 209                 public byte[] GetPublicKeyToken()
 210                 {
 211                         if (keyToken != null)
 212                                 return keyToken;
 213                         else if (publicKey == null)
 214                                 return null;
 215                         else {
 216                                 HashAlgorithm ha = null;
 217                                 switch (hashalg) {
 218                                         case AssemblyHashAlgorithm.MD5:
 219                                                 ha = MD5.Create ();
 220                                                 break;
 221                                         default:
 222                                                 // None default to SHA1
 223                                                 ha = SHA1.Create ();
 224                                                 break;
 225                                 }
 226                                 byte[] hash = ha.ComputeHash (publicKey);
 227                                 // we need the last 8 bytes in reverse order
 228                                 keyToken = new byte [8];
 229                                 Array.Copy (hash, (hash.Length - 8), keyToken, 0, 8);
 230                                 Array.Reverse (keyToken, 0, 8);
 231                                 return keyToken;
 232                         }
 233                 }
 234
 235                 public void SetPublicKey (byte[] publicKey)
 236                 {
 237                         flags = AssemblyNameFlags.PublicKey;
 238                         this.publicKey = publicKey;
 239                 }
 240
 241                 public void SetPublicKeyToken (byte[] publicKeyToken)
 242                 {
 243                         keyToken = publicKeyToken;
 244                 }
 245
 246                 [SecurityPermission (SecurityAction.Demand, SerializationFormatter = true)]
 247                 public void GetObjectData (SerializationInfo info, StreamingContext context)
 248                 {
 249                         if (info == null)
 250                                 throw new ArgumentNullException ("info");
 251
 252                         info.AddValue ("_Name", name);
 253                         info.AddValue ("_PublicKey", publicKey);
 254                         info.AddValue ("_PublicToken", keyToken);
 255                         info.AddValue ("_CultureInfo", cultureinfo != null ? cultureinfo.LCID : -1);
 256                         info.AddValue ("_CodeBase", codebase);
 257                         info.AddValue ("_Version", Version);
 258                         info.AddValue ("_HashAlgorithm", hashalg);
 259                         info.AddValue ("_HashAlgorithmForControl", AssemblyHashAlgorithm.None);
 260                         info.AddValue ("_StrongNameKeyPair", keypair);
 261                         info.AddValue ("_VersionCompatibility", versioncompat);
 262                         info.AddValue ("_Flags", flags);
 263                         info.AddValue ("_HashForControl", null);
 264                 }
 265
 266                 public object Clone()
 267                 {
 268                         AssemblyName an = new AssemblyName ();
 269                         an.name = name;
 270                         an.codebase = codebase;
 271                         an.major = major;
 272                         an.minor = minor;
 273                         an.build = build;
 274                         an.revision = revision;
 275                         an.cultureinfo = cultureinfo;
 276                         an.flags = flags;
 277                         an.hashalg = hashalg;
 278                         an.keypair = keypair;
 279                         an.publicKey = publicKey;
 280                         an.keyToken = keyToken;
 281                         an.versioncompat = versioncompat;
 282                         return an;
 283                 }
 284
 285                 public void OnDeserialization (object sender)
 286                 {
 287                         Version = version;
 288                 }
 289
 290                 public static AssemblyName GetAssemblyName (string assemblyFile)
 291                 {
 292                         if (assemblyFile == null)
 293                                 throw new ArgumentNullException ("assemblyFile");
 294
 295                         AssemblyName aname = new AssemblyName ();
 296                         Assembly.InternalGetAssemblyName (System.IO.Path.GetFullPath (assemblyFile), aname);
 297                         return aname;
 298                 }
 299         }
 300 }