class/System/System.ComponentModel.Design/RuntimeLicenseContext.cs

   1 //
   2 // System.ComponentModel.Design.RuntimeLicenseContext.cs
   3 //
   4 // Authors:
   5 //   Ivan Hamilton (ivan@chimerical.com.au)
   6 //   Martin Willemoes Hansen (mwh@sysrq.dk)
   7 //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
   8 //   Carlo Kok  (ck@remobjects.com)
   9 //
  10 // (C) 2004 Ivan Hamilton
  11 // (C) 2003 Martin Willemoes Hansen
  12 // (C) 2003 Andreas Nahr
  13 // (C) 2009 Carlo Kok
  14 //
  15
  16 //
  17 // Permission is hereby granted, free of charge, to any person obtaining
  18 // a copy of this software and associated documentation files (the
  19 // "Software"), to deal in the Software without restriction, including
  20 // without limitation the rights to use, copy, modify, merge, publish,
  21 // distribute, sublicense, and/or sell copies of the Software, and to
  22 // permit persons to whom the Software is furnished to do so, subject to
  23 // the following conditions:
  24 //
  25 // The above copyright notice and this permission notice shall be
  26 // included in all copies or substantial portions of the Software.
  27 //
  28 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  29 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  30 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  31 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  32 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  33 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  34 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  35 //
  36
  37 using System.ComponentModel;
  38 using System.Reflection;
  39 using System.Collections;
  40 using System.IO;
  41 using System.Runtime.Serialization.Formatters.Binary;
  42
  43 namespace System.ComponentModel.Design
  44 {
  45         internal class RuntimeLicenseContext : LicenseContext
  46         {
  47         private Hashtable extraassemblies;
  48                 private Hashtable keys;
  49
  50                 public RuntimeLicenseContext () : base ()
  51                 {
  52                 }
  53
  54                 void LoadKeys ()
  55                 {
  56                         if (keys != null)
  57                                 return;
  58                         keys = new Hashtable ();
  59
  60                         Assembly asm = Assembly.GetEntryAssembly ();
  61                         if (asm != null)
  62                                 LoadAssemblyLicenses (keys, asm);
  63                         else {
  64                                 foreach (Assembly asmnode in AppDomain.CurrentDomain.GetAssemblies ()) {
  65                                                 LoadAssemblyLicenses (keys, asmnode);
  66                                 }
  67                         }
  68                 }
  69
  70                 void LoadAssemblyLicenses (Hashtable targetkeys, Assembly asm)
  71                 {
  72             if (asm is System.Reflection.Emit.AssemblyBuilder) return;
  73                         string asmname = Path.GetFileName (asm.Location);
  74                         string resourcename = asmname + ".licenses";
  75                         try {
  76                                 foreach (string name in asm.GetManifestResourceNames ()) {
  77                                         if (name != resourcename)
  78                                                 continue;
  79                                         using (Stream stream = asm.GetManifestResourceStream (name)) {
  80                                                 BinaryFormatter formatter = new BinaryFormatter ();
  81                                                 object[] res = formatter.Deserialize (stream) as object[];
  82                                                 if (String.Compare ((string) res[0], asmname, true) == 0) {
  83                                                         Hashtable table = (Hashtable) res[1];
  84                                                         foreach (DictionaryEntry et in table)
  85                                 targetkeys.Add (et.Key, et.Value);
  86                                                 }
  87                                         }
  88                                 }
  89
  90                         } catch (InvalidCastException) {
  91                         }
  92                 }
  93
  94                 public override string GetSavedLicenseKey (Type type, Assembly resourceAssembly)
  95                 {
  96                         if (type == null)
  97                                 throw new ArgumentNullException ("type");
  98             if (resourceAssembly != null) {
  99                 if (extraassemblies == null)
 100                                         extraassemblies = new Hashtable ();
 101                 Hashtable ht = extraassemblies [resourceAssembly.FullName] as Hashtable;
 102                 if (ht == null) {
 103                     ht = new Hashtable ();
 104                     LoadAssemblyLicenses (ht, resourceAssembly);
 105                     extraassemblies [resourceAssembly.FullName] = ht;
 106                 }
 107                 return (string) ht [type.AssemblyQualifiedName];
 108             }
 109                         LoadKeys ();
 110                         return (string) keys [type.AssemblyQualifiedName];
 111                 }
 112
 113                 public override void SetSavedLicenseKey (Type type, string key)
 114                 {
 115                         if (type == null)
 116                                 throw new ArgumentNullException ("type");
 117                         LoadKeys ();
 118                         keys [type.AssemblyQualifiedName] = key;
 119                 }
 120         }
 121 }