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;
  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         [StructLayout (LayoutKind.Sequential)]
  57         public sealed class AssemblyName  : ICloneable, ISerializable, IDeserializationCallback, _AssemblyName {
  58
  59 #pragma warning disable 169
  60                 #region Synch with object-internals.h
  61                 string name;
  62                 string codebase;
  63                 int major, minor, build, revision;
  64                 CultureInfo cultureinfo;
  65                 AssemblyNameFlags flags;
  66                 AssemblyHashAlgorithm hashalg;
  67                 StrongNameKeyPair keypair;
  68                 byte[] publicKey;
  69                 byte[] keyToken;
  70                 AssemblyVersionCompatibility versioncompat;
  71                 Version version;
  72                 ProcessorArchitecture processor_architecture = ProcessorArchitecture.None;
  73                 #endregion
  74 #pragma warning restore 169
  75
  76                 public AssemblyName ()
  77                 {
  78                         // defaults
  79                         versioncompat = AssemblyVersionCompatibility.SameMachine;
  80                 }
  81
  82                 [MethodImpl (MethodImplOptions.InternalCall)]
  83                 static extern bool ParseName (AssemblyName aname, string assemblyName);
  84
  85                 public AssemblyName (string assemblyName)
  86                 {
  87                         if (assemblyName == null)
  88                                 throw new ArgumentNullException ("assemblyName");
  89                         if (assemblyName.Length < 1)
  90                                 throw new ArgumentException ("assemblyName cannot have zero length.");
  91
  92                         if (!ParseName (this, assemblyName))
  93                                 throw new FileLoadException ("The assembly name is invalid.");
  94                 }
  95
  96                 [MonoLimitation ("Not used, as the values are too limited;  Mono supports more")]
  97                 public ProcessorArchitecture ProcessorArchitecture {
  98                         get {
  99                                 return processor_architecture;
 100                         }
 101                         set {
 102                                 processor_architecture = value;
 103                         }
 104                 }
 105
 106                 internal AssemblyName (SerializationInfo si, StreamingContext sc)
 107                 {
 108                         name = si.GetString ("_Name");
 109                         codebase = si.GetString ("_CodeBase");
 110                         version = (Version)si.GetValue ("_Version", typeof (Version));
 111                         publicKey = (byte[])si.GetValue ("_PublicKey", typeof (byte[]));
 112                         keyToken = (byte[])si.GetValue ("_PublicKeyToken", typeof (byte[]));
 113                         hashalg = (AssemblyHashAlgorithm)si.GetValue ("_HashAlgorithm", typeof (AssemblyHashAlgorithm));
 114                         keypair = (StrongNameKeyPair)si.GetValue ("_StrongNameKeyPair", typeof (StrongNameKeyPair));
 115                         versioncompat = (AssemblyVersionCompatibility)si.GetValue ("_VersionCompatibility", typeof (AssemblyVersionCompatibility));
 116                         flags = (AssemblyNameFlags)si.GetValue ("_Flags", typeof (AssemblyNameFlags));
 117                         int lcid = si.GetInt32 ("_CultureInfo");
 118                         if (lcid != -1) cultureinfo = new CultureInfo (lcid);
 119                 }
 120
 121                 public string Name {
 122                         get { return name; }
 123                         set { name = value; }
 124                 }
 125
 126                 public string CodeBase {
 127                         get { return codebase; }
 128                         set { codebase = value; }
 129                 }
 130
 131                 public string EscapedCodeBase {
 132                         get {
 133                                 if (codebase == null)
 134                                         return null;
 135                                 return Uri.EscapeString (codebase, false, true, true);
 136                         }
 137                 }
 138
 139                 public CultureInfo CultureInfo {
 140                         get { return cultureinfo; }
 141                         set { cultureinfo = value; }
 142                 }
 143
 144                 public AssemblyNameFlags Flags {
 145                         get { return flags; }
 146                         set { flags = value; }
 147                 }
 148
 149                 public string FullName {
 150                         get {
 151                                 if (name == null)
 152                                         return string.Empty;
 153                                 StringBuilder fname = new StringBuilder ();
 154                                 if (Char.IsWhiteSpace (name [0]))
 155                                         fname.Append ("\"" + name + "\"");
 156                                 else
 157                                         fname.Append (name);
 158                                 if (Version != null) {
 159                                         fname.Append (", Version=");
 160                                         fname.Append (Version.ToString ());
 161                                 }
 162                                 if (cultureinfo != null) {
 163                                         fname.Append (", Culture=");
 164                                         if (cultureinfo.LCID == CultureInfo.InvariantCulture.LCID)
 165                                                 fname.Append ("neutral");
 166                                         else
 167                                                 fname.Append (cultureinfo.Name);
 168                                 }
 169                                 byte [] pub_tok = InternalGetPublicKeyToken ();
 170                                 if (pub_tok != null) {
 171                                         if (pub_tok.Length == 0)
 172                                                 fname.Append (", PublicKeyToken=null");
 173                                         else {
 174                                                 fname.Append (", PublicKeyToken=");
 175                                                 for (int i = 0; i < pub_tok.Length; i++)
 176                                                         fname.Append (pub_tok[i].ToString ("x2"));
 177                                         }
 178                                 }
 179
 180                                 if ((Flags & AssemblyNameFlags.Retargetable) != 0)
 181                                         fname.Append (", Retargetable=Yes");
 182
 183                                 return fname.ToString ();
 184                         }
 185                 }
 186
 187                 public AssemblyHashAlgorithm HashAlgorithm {
 188                         get { return hashalg; }
 189                         set { hashalg = value; }
 190                 }
 191
 192                 public StrongNameKeyPair KeyPair {
 193                         get { return keypair; }
 194                         set { keypair = value; }
 195                 }
 196
 197                 public Version Version {
 198                         get {
 199                                 return version;
 200                         }
 201
 202                         set {
 203                                 version = value;
 204                                 if (value == null)
 205                                         major = minor = build = revision = 0;
 206                                 else {
 207                                         major = value.Major;
 208                                         minor = value.Minor;
 209                                         build = value.Build;
 210                                         revision = value.Revision;
 211                                 }
 212                         }
 213                 }
 214
 215                 public AssemblyVersionCompatibility VersionCompatibility {
 216                         get { return versioncompat; }
 217                         set { versioncompat = value; }
 218                 }
 219
 220                 public override string ToString ()
 221                 {
 222                         string name = FullName;
 223                         return (name != null) ? name : base.ToString ();
 224                 }
 225
 226                 public byte[] GetPublicKey()
 227                 {
 228                         return publicKey;
 229                 }
 230
 231                 public byte[] GetPublicKeyToken ()
 232                 {
 233                         if (keyToken != null)
 234                                 return keyToken;
 235                         else if (publicKey == null)
 236                                 return null;
 237                         else {
 238                                 if (publicKey.Length == 0)
 239                                         return new byte [0];
 240
 241                                 if (!IsPublicKeyValid)
 242                                         throw new  SecurityException ("The public key is not valid.");
 243
 244                                 keyToken = ComputePublicKeyToken ();
 245                                 return keyToken;
 246                         }
 247                 }
 248
 249                 private bool IsPublicKeyValid {
 250                         get {
 251                                 // check for ECMA key
 252                                 if (publicKey.Length == 16) {
 253                                         int i = 0;
 254                                         int sum = 0;
 255                                         while (i < publicKey.Length)
 256                                                 sum += publicKey [i++];
 257                                         if (sum == 4)
 258                                                 return true;
 259                                 }
 260
 261                                 switch (publicKey [0]) {
 262                                 case 0x00: // public key inside a header
 263                                         if (publicKey.Length > 12 && publicKey [12] == 0x06) {
 264                                                 try {
 265                                                         CryptoConvert.FromCapiPublicKeyBlob (
 266                                                                 publicKey, 12);
 267                                                         return true;
 268                                                 } catch (CryptographicException) {
 269                                                 }
 270                                         }
 271                                         break;
 272                                 case 0x06: // public key
 273                                         try {
 274                                                 CryptoConvert.FromCapiPublicKeyBlob (publicKey);
 275                                                 return true;
 276                                         } catch (CryptographicException) {
 277                                         }
 278                                         break;
 279                                 case 0x07: // private key
 280                                         break;
 281                                 }
 282
 283                                 return false;
 284                         }
 285                 }
 286
 287                 private byte [] InternalGetPublicKeyToken ()
 288                 {
 289                         if (keyToken != null)
 290                                 return keyToken;
 291
 292                         if (publicKey == null)
 293                                 return null;
 294
 295                         if (publicKey.Length == 0)
 296                                 return new byte [0];
 297
 298                         if (!IsPublicKeyValid)
 299                                 throw new  SecurityException ("The public key is not valid.");
 300
 301                         return ComputePublicKeyToken ();
 302                 }
 303
 304                 private byte [] ComputePublicKeyToken ()
 305                 {
 306                         HashAlgorithm ha = SHA1.Create ();
 307                         byte [] hash = ha.ComputeHash (publicKey);
 308                         // we need the last 8 bytes in reverse order
 309                         byte [] token = new byte [8];
 310                         Array.Copy (hash, (hash.Length - 8), token, 0, 8);
 311                         Array.Reverse (token, 0, 8);
 312                         return token;
 313                 }
 314
 315                 [MonoTODO]
 316                 public static bool ReferenceMatchesDefinition (AssemblyName reference, AssemblyName definition)
 317                 {
 318                         if (reference == null)
 319                                 throw new ArgumentNullException ("reference");
 320                         if (definition == null)
 321                                 throw new ArgumentNullException ("definition");
 322                         if (reference.Name != definition.Name)
 323                                 return false;
 324                         throw new NotImplementedException ();
 325                 }
 326
 327                 public void SetPublicKey (byte[] publicKey)
 328                 {
 329                         if (publicKey == null)
 330                                 flags ^= AssemblyNameFlags.PublicKey;
 331                         else
 332                                 flags |= AssemblyNameFlags.PublicKey;
 333                         this.publicKey = publicKey;
 334                 }
 335
 336                 public void SetPublicKeyToken (byte[] publicKeyToken)
 337                 {
 338                         keyToken = publicKeyToken;
 339                 }
 340
 341                 [SecurityPermission (SecurityAction.Demand, SerializationFormatter = true)]
 342                 public void GetObjectData (SerializationInfo info, StreamingContext context)
 343                 {
 344                         if (info == null)
 345                                 throw new ArgumentNullException ("info");
 346
 347                         info.AddValue ("_Name", name);
 348                         info.AddValue ("_PublicKey", publicKey);
 349                         info.AddValue ("_PublicKeyToken", keyToken);
 350                         info.AddValue ("_CultureInfo", cultureinfo != null ? cultureinfo.LCID : -1);
 351                         info.AddValue ("_CodeBase", codebase);
 352                         info.AddValue ("_Version", Version);
 353                         info.AddValue ("_HashAlgorithm", hashalg);
 354                         info.AddValue ("_HashAlgorithmForControl", AssemblyHashAlgorithm.None);
 355                         info.AddValue ("_StrongNameKeyPair", keypair);
 356                         info.AddValue ("_VersionCompatibility", versioncompat);
 357                         info.AddValue ("_Flags", flags);
 358                         info.AddValue ("_HashForControl", null);
 359                 }
 360
 361                 public object Clone()
 362                 {
 363                         AssemblyName an = new AssemblyName ();
 364                         an.name = name;
 365                         an.codebase = codebase;
 366                         an.major = major;
 367                         an.minor = minor;
 368                         an.build = build;
 369                         an.revision = revision;
 370                         an.version = version;
 371                         an.cultureinfo = cultureinfo;
 372                         an.flags = flags;
 373                         an.hashalg = hashalg;
 374                         an.keypair = keypair;
 375                         an.publicKey = publicKey;
 376                         an.keyToken = keyToken;
 377                         an.versioncompat = versioncompat;
 378                         return an;
 379                 }
 380
 381                 public void OnDeserialization (object sender)
 382                 {
 383                         Version = version;
 384                 }
 385
 386                 public static AssemblyName GetAssemblyName (string assemblyFile)
 387                 {
 388                         if (assemblyFile == null)
 389                                 throw new ArgumentNullException ("assemblyFile");
 390
 391                         AssemblyName aname = new AssemblyName ();
 392                         Assembly.InternalGetAssemblyName (Path.GetFullPath (assemblyFile), aname);
 393                         return aname;
 394                 }
 395
 396                 void _AssemblyName.GetIDsOfNames ([In] ref Guid riid, IntPtr rgszNames, uint cNames, uint lcid, IntPtr rgDispId)
 397                 {
 398                         throw new NotImplementedException ();
 399                 }
 400
 401                 void _AssemblyName.GetTypeInfo (uint iTInfo, uint lcid, IntPtr ppTInfo)
 402                 {
 403                         throw new NotImplementedException ();
 404                 }
 405
 406                 void _AssemblyName.GetTypeInfoCount (out uint pcTInfo)
 407                 {
 408                         throw new NotImplementedException ();
 409                 }
 410
 411                 void _AssemblyName.Invoke (uint dispIdMember, [In] ref Guid riid, uint lcid, short wFlags, IntPtr pDispParams,
 412                         IntPtr pVarResult, IntPtr pExcepInfo, IntPtr puArgErr)
 413                 {
 414                         throw new NotImplementedException ();
 415                 }
 416         }
 417 }