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;
  36 using System.Security.Cryptography;
  37 using System.Security.Permissions;
  38 using System.Text;
  39 using System.Runtime.InteropServices;
  40 using System.Runtime.CompilerServices;
  41 using System.IO;
  42
  43 using Mono.Security;
  44 using Mono.Security.Cryptography;
  45
  46 namespace System.Reflection {
  47
  48 // References:
  49 // a.   Uniform Resource Identifiers (URI): Generic Syntax
  50 //      http://www.ietf.org/rfc/rfc2396.txt
  51
  52         [ComVisible (true)]
  53         [ComDefaultInterfaceAttribute (typeof (_AssemblyName))]
  54         [Serializable]
  55         [ClassInterfaceAttribute (ClassInterfaceType.None)]
  56         public sealed class AssemblyName  : ICloneable, ISerializable, IDeserializationCallback, _AssemblyName {
  57
  58 #pragma warning disable 169
  59                 #region Synch with object-internals.h
  60                 string name;
  61                 string codebase;
  62                 int major, minor, build, revision;
  63                 CultureInfo cultureinfo;
  64                 AssemblyNameFlags flags;
  65                 AssemblyHashAlgorithm hashalg;
  66                 StrongNameKeyPair keypair;
  67                 byte[] publicKey;
  68                 byte[] keyToken;
  69                 AssemblyVersionCompatibility versioncompat;
  70                 Version version;
  71                 ProcessorArchitecture processor_architecture = ProcessorArchitecture.None;
  72                 #endregion
  73 #pragma warning restore 169
  74
  75                 public AssemblyName ()
  76                 {
  77                         // defaults
  78                         versioncompat = AssemblyVersionCompatibility.SameMachine;
  79                 }
  80
  81                 [MethodImpl (MethodImplOptions.InternalCall)]
  82                 static extern bool ParseName (AssemblyName aname, string assemblyName);
  83
  84                 public AssemblyName (string assemblyName)
  85                 {
  86                         if (assemblyName == null)
  87                                 throw new ArgumentNullException ("assemblyName");
  88                         if (assemblyName.Length < 1)
  89                                 throw new ArgumentException ("assemblyName cannot have zero length.");
  90
  91                         if (!ParseName (this, assemblyName))
  92                                 throw new FileLoadException ("The assembly name is invalid.");
  93                 }
  94
  95                 [MonoLimitation ("Not used, as the values are too limited;  Mono supports more")]
  96                 public ProcessorArchitecture ProcessorArchitecture {
  97                         get {
  98                                 return processor_architecture;
  99                         }
 100                         set {
 101                                 processor_architecture = value;
 102                         }
 103                 }
 104
 105                 internal AssemblyName (SerializationInfo si, StreamingContext sc)
 106                 {
 107                         name = si.GetString ("_Name");
 108                         codebase = si.GetString ("_CodeBase");
 109                         version = (Version)si.GetValue ("_Version", typeof (Version));
 110                         publicKey = (byte[])si.GetValue ("_PublicKey", typeof (byte[]));
 111                         keyToken = (byte[])si.GetValue ("_PublicKeyToken", typeof (byte[]));
 112                         hashalg = (AssemblyHashAlgorithm)si.GetValue ("_HashAlgorithm", typeof (AssemblyHashAlgorithm));
 113                         keypair = (StrongNameKeyPair)si.GetValue ("_StrongNameKeyPair", typeof (StrongNameKeyPair));
 114                         versioncompat = (AssemblyVersionCompatibility)si.GetValue ("_VersionCompatibility", typeof (AssemblyVersionCompatibility));
 115                         flags = (AssemblyNameFlags)si.GetValue ("_Flags", typeof (AssemblyNameFlags));
 116                         int lcid = si.GetInt32 ("_CultureInfo");
 117                         if (lcid != -1) cultureinfo = new CultureInfo (lcid);
 118                 }
 119
 120                 public string Name {
 121                         get { return name; }
 122                         set { name = value; }
 123                 }
 124
 125                 public string CodeBase {
 126                         get { return codebase; }
 127                         set { codebase = value; }
 128                 }
 129
 130                 public string EscapedCodeBase {
 131                         get {
 132                                 if (codebase == null)
 133                                         return null;
 134                                 return Uri.EscapeString (codebase, false, true, true);
 135                         }
 136                 }
 137
 138                 public CultureInfo CultureInfo {
 139                         get { return cultureinfo; }
 140                         set { cultureinfo = value; }
 141                 }
 142
 143                 public AssemblyNameFlags Flags {
 144                         get { return flags; }
 145                         set { flags = value; }
 146                 }
 147
 148                 public string FullName {
 149                         get {
 150                                 if (name == null)
 151                                         return string.Empty;
 152                                 StringBuilder fname = new StringBuilder ();
 153                                 fname.Append (name);
 154                                 if (Version != null) {
 155                                         fname.Append (", Version=");
 156                                         fname.Append (Version.ToString ());
 157                                 }
 158                                 if (cultureinfo != null) {
 159                                         fname.Append (", Culture=");
 160                                         if (cultureinfo.LCID == CultureInfo.InvariantCulture.LCID)
 161                                                 fname.Append ("neutral");
 162                                         else
 163                                                 fname.Append (cultureinfo.Name);
 164                                 }
 165                                 byte [] pub_tok = InternalGetPublicKeyToken ();
 166                                 if (pub_tok != null) {
 167                                         if (pub_tok.Length == 0)
 168                                                 fname.Append (", PublicKeyToken=null");
 169                                         else {
 170                                                 fname.Append (", PublicKeyToken=");
 171                                                 for (int i = 0; i < pub_tok.Length; i++)
 172                                                         fname.Append (pub_tok[i].ToString ("x2"));
 173                                         }
 174                                 }
 175
 176                                 if ((Flags & AssemblyNameFlags.Retargetable) != 0)
 177                                         fname.Append (", Retargetable=Yes");
 178
 179                                 return fname.ToString ();
 180                         }
 181                 }
 182
 183                 public AssemblyHashAlgorithm HashAlgorithm {
 184                         get { return hashalg; }
 185                         set { hashalg = value; }
 186                 }
 187
 188                 public StrongNameKeyPair KeyPair {
 189                         get { return keypair; }
 190                         set { keypair = value; }
 191                 }
 192
 193                 public Version Version {
 194                         get {
 195                                 return version;
 196                         }
 197
 198                         set {
 199                                 version = value;
 200                                 if (value == null)
 201                                         major = minor = build = revision = 0;
 202                                 else {
 203                                         major = value.Major;
 204                                         minor = value.Minor;
 205                                         build = value.Build;
 206                                         revision = value.Revision;
 207                                 }
 208                         }
 209                 }
 210
 211                 public AssemblyVersionCompatibility VersionCompatibility {
 212                         get { return versioncompat; }
 213                         set { versioncompat = value; }
 214                 }
 215
 216                 public override string ToString ()
 217                 {
 218                         string name = FullName;
 219                         return (name != null) ? name : base.ToString ();
 220                 }
 221
 222                 public byte[] GetPublicKey()
 223                 {
 224                         return publicKey;
 225                 }
 226
 227                 public byte[] GetPublicKeyToken ()
 228                 {
 229                         if (keyToken != null)
 230                                 return keyToken;
 231                         else if (publicKey == null)
 232                                 return null;
 233                         else {
 234                                 if (publicKey.Length == 0)
 235                                         return new byte [0];
 236
 237                                 if (!IsPublicKeyValid)
 238                                         throw new  SecurityException ("The public key is not valid.");
 239
 240                                 keyToken = ComputePublicKeyToken ();
 241                                 return keyToken;
 242                         }
 243                 }
 244
 245                 private bool IsPublicKeyValid {
 246                         get {
 247                                 // check for ECMA key
 248                                 if (publicKey.Length == 16) {
 249                                         int i = 0;
 250                                         int sum = 0;
 251                                         while (i < publicKey.Length)
 252                                                 sum += publicKey [i++];
 253                                         if (sum == 4)
 254                                                 return true;
 255                                 }
 256
 257                                 switch (publicKey [0]) {
 258                                 case 0x00: // public key inside a header
 259                                         if (publicKey.Length > 12 && publicKey [12] == 0x06) {
 260                                                 try {
 261                                                         CryptoConvert.FromCapiPublicKeyBlob (
 262                                                                 publicKey, 12);
 263                                                         return true;
 264                                                 } catch (CryptographicException) {
 265                                                 }
 266                                         }
 267                                         break;
 268                                 case 0x06: // public key
 269                                         try {
 270                                                 CryptoConvert.FromCapiPublicKeyBlob (publicKey);
 271                                                 return true;
 272                                         } catch (CryptographicException) {
 273                                         }
 274                                         break;
 275                                 case 0x07: // private key
 276                                         break;
 277                                 }
 278
 279                                 return false;
 280                         }
 281                 }
 282
 283                 private byte [] InternalGetPublicKeyToken ()
 284                 {
 285                         if (keyToken != null)
 286                                 return keyToken;
 287
 288                         if (publicKey == null)
 289                                 return null;
 290
 291                         if (publicKey.Length == 0)
 292                                 return new byte [0];
 293
 294                         if (!IsPublicKeyValid)
 295                                 throw new  SecurityException ("The public key is not valid.");
 296
 297                         return ComputePublicKeyToken ();
 298                 }
 299
 300                 private byte [] ComputePublicKeyToken ()
 301                 {
 302                         HashAlgorithm ha = SHA1.Create ();
 303                         byte [] hash = ha.ComputeHash (publicKey);
 304                         // we need the last 8 bytes in reverse order
 305                         byte [] token = new byte [8];
 306                         Array.Copy (hash, (hash.Length - 8), token, 0, 8);
 307                         Array.Reverse (token, 0, 8);
 308                         return token;
 309                 }
 310
 311                 [MonoTODO]
 312                 public static bool ReferenceMatchesDefinition (AssemblyName reference, AssemblyName definition)
 313                 {
 314                         if (reference == null)
 315                                 throw new ArgumentNullException ("reference");
 316                         if (definition == null)
 317                                 throw new ArgumentNullException ("definition");
 318                         if (reference.Name != definition.Name)
 319                                 return false;
 320                         throw new NotImplementedException ();
 321                 }
 322
 323                 public void SetPublicKey (byte[] publicKey)
 324                 {
 325                         if (publicKey == null)
 326                                 flags ^= AssemblyNameFlags.PublicKey;
 327                         else
 328                                 flags |= AssemblyNameFlags.PublicKey;
 329                         this.publicKey = publicKey;
 330                 }
 331
 332                 public void SetPublicKeyToken (byte[] publicKeyToken)
 333                 {
 334                         keyToken = publicKeyToken;
 335                 }
 336
 337                 [SecurityPermission (SecurityAction.Demand, SerializationFormatter = true)]
 338                 public void GetObjectData (SerializationInfo info, StreamingContext context)
 339                 {
 340                         if (info == null)
 341                                 throw new ArgumentNullException ("info");
 342
 343                         info.AddValue ("_Name", name);
 344                         info.AddValue ("_PublicKey", publicKey);
 345                         info.AddValue ("_PublicKeyToken", keyToken);
 346                         info.AddValue ("_CultureInfo", cultureinfo != null ? cultureinfo.LCID : -1);
 347                         info.AddValue ("_CodeBase", codebase);
 348                         info.AddValue ("_Version", Version);
 349                         info.AddValue ("_HashAlgorithm", hashalg);
 350                         info.AddValue ("_HashAlgorithmForControl", AssemblyHashAlgorithm.None);
 351                         info.AddValue ("_StrongNameKeyPair", keypair);
 352                         info.AddValue ("_VersionCompatibility", versioncompat);
 353                         info.AddValue ("_Flags", flags);
 354                         info.AddValue ("_HashForControl", null);
 355                 }
 356
 357                 public object Clone()
 358                 {
 359                         AssemblyName an = new AssemblyName ();
 360                         an.name = name;
 361                         an.codebase = codebase;
 362                         an.major = major;
 363                         an.minor = minor;
 364                         an.build = build;
 365                         an.revision = revision;
 366                         an.version = version;
 367                         an.cultureinfo = cultureinfo;
 368                         an.flags = flags;
 369                         an.hashalg = hashalg;
 370                         an.keypair = keypair;
 371                         an.publicKey = publicKey;
 372                         an.keyToken = keyToken;
 373                         an.versioncompat = versioncompat;
 374                         return an;
 375                 }
 376
 377                 public void OnDeserialization (object sender)
 378                 {
 379                         Version = version;
 380                 }
 381
 382                 public static AssemblyName GetAssemblyName (string assemblyFile)
 383                 {
 384                         if (assemblyFile == null)
 385                                 throw new ArgumentNullException ("assemblyFile");
 386
 387                         AssemblyName aname = new AssemblyName ();
 388                         Assembly.InternalGetAssemblyName (Path.GetFullPath (assemblyFile), aname);
 389                         return aname;
 390                 }
 391
 392                 void _AssemblyName.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 393                 {
 394                         throw new NotImplementedException ();
 395                 }
 396
 397                 void _AssemblyName.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 398                 {
 399                         throw new NotImplementedException ();
 400                 }
 401
 402                 void _AssemblyName.GetTypeInfoCount (out uint pcTInfo)
 403                 {
 404                         throw new NotImplementedException ();
 405                 }
 406
 407                 void _AssemblyName.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
 408                         IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 409                 {
 410                         throw new NotImplementedException ();
 411                 }
 412         }
 413 }