mcs/ilasm/codegen/DeclSecurity.cs

   1 //
   2 // Mono.ILASM.DeclSecurity
   3 //
   4 // Author(s):
   5 //  Ankit Jain  <JAnkit@novell.com>
   6 //
   7 // (C) 2005 Ankit Jain, All rights reserved
   8 //
   9
  10
  11 using System;
  12 using System.Collections;
  13 using System.Security;
  14 using System.Security.Permissions;
  15
  16 using SSPermissionSet = System.Security.PermissionSet;
  17 using MIPermissionSet = Mono.ILASM.PermissionSet;
  18
  19 namespace Mono.ILASM {
  20
  21         public interface IDeclSecurityTarget {
  22                 DeclSecurity DeclSecurity { get; }
  23         }
  24
  25         public class DeclSecurity {
  26
  27                 private Hashtable permissionset_table;
  28                 private Hashtable permissionset20_table;
  29
  30                 public DeclSecurity ()
  31                 {
  32                         permissionset_table = new Hashtable ();
  33                 }
  34
  35                 public void AddPermission (PEAPI.SecurityAction sec_action, IPermission perm)
  36                 {
  37                         SSPermissionSet ps = (SSPermissionSet) permissionset_table [sec_action];
  38                         if (ps == null) {
  39                                 ps = new SSPermissionSet (PermissionState.None);
  40                                 permissionset_table [sec_action] = ps;
  41                         }
  42
  43                         ps.AddPermission (perm);
  44                 }
  45
  46                 public void AddPermissionSet (PEAPI.SecurityAction sec_action, SSPermissionSet perm_set)
  47                 {
  48                         SSPermissionSet ps = (SSPermissionSet) permissionset_table [sec_action];
  49                         if (ps == null) {
  50                                 permissionset_table [sec_action] = perm_set;
  51                                 return;
  52                         }
  53
  54                         foreach (IPermission iper in perm_set)
  55                                 ps.AddPermission (iper);
  56                 }
  57
  58                 public void AddPermissionSet (PEAPI.SecurityAction sec_action, MIPermissionSet perm_set)
  59                 {
  60                         PermissionSet ps = null;
  61
  62                         if (permissionset20_table == null)
  63                                 permissionset20_table = new Hashtable ();
  64                         else
  65                                 ps = (MIPermissionSet) permissionset20_table [sec_action];
  66
  67                         if (ps == null) {
  68                                 permissionset20_table [sec_action] = perm_set;
  69                                 return;
  70                         }
  71
  72                         foreach (Permission perm in perm_set.Permissions)
  73                                 ps.AddPermission (perm);
  74                 }
  75
  76                 public void AddTo (CodeGen code_gen, PEAPI.MetaDataElement elem)
  77                 {
  78                         System.Text.UnicodeEncoding ue = new System.Text.UnicodeEncoding ();
  79                         foreach (DictionaryEntry entry in permissionset_table) {
  80                                 PEAPI.SecurityAction sec_action = (PEAPI.SecurityAction) entry.Key;
  81                                 SSPermissionSet ps = (SSPermissionSet) entry.Value;
  82
  83                                 code_gen.PEFile.AddDeclSecurity (sec_action,
  84                                         ue.GetBytes (ps.ToXml ().ToString ()),
  85                                          elem);
  86                         }
  87
  88                         if (permissionset20_table == null)
  89                                 return;
  90
  91                         foreach (DictionaryEntry entry in permissionset20_table) {
  92                                 PEAPI.SecurityAction sec_action = (PEAPI.SecurityAction) entry.Key;
  93                                 MIPermissionSet ps = (MIPermissionSet) entry.Value;
  94
  95                                 code_gen.PEFile.AddDeclSecurity (sec_action,
  96                                         ps.Resolve (code_gen),
  97                                         elem);
  98                         }
  99
 100                 }
 101
 102         }
 103
 104 }