303 lines
9.0 KiB
C#
303 lines
9.0 KiB
C#
//
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// System.Net.WebPermission.cs
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//
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// Author:
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// Andreas Nahr (ClassDevelopment@A-SoftTech.com)
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// (based on SocketPermission.cs)
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//
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// (C) 2003 Andreas Nahr
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//
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Collections;
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using System.Security;
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using System.Security.Permissions;
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using System.Text.RegularExpressions;
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namespace System.Net {
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internal enum WebPermissionInfoType {
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InfoString,
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InfoUnexecutedRegex,
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InfoRegex,
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}
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internal class WebPermissionInfo {
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WebPermissionInfoType _type;
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object _info;
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public WebPermissionInfo (WebPermissionInfoType type, string info)
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{
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_type = type;
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_info = (string) info;
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}
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public WebPermissionInfo (Regex regex)
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{
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_type = WebPermissionInfoType.InfoRegex;
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_info = (object) regex;
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}
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public string Info {
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get {
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if (_type == WebPermissionInfoType.InfoRegex)
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return null;
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return (string) _info;
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}
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}
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}
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// (based on SocketPermission.cs - Please look there to implement missing members!)
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[MonoTODO ("Most private members that include functionallity are not implemented!")]
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[Serializable]
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public sealed class WebPermission : CodeAccessPermission, IUnrestrictedPermission
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{
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// Fields
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ArrayList m_acceptList = new ArrayList ();
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ArrayList m_connectList = new ArrayList ();
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bool m_noRestriction = false;
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// Constructors
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public WebPermission () : base ()
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{
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}
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public WebPermission (PermissionState state) : base ()
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{
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m_noRestriction = (state == PermissionState.Unrestricted);
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}
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public WebPermission (NetworkAccess access, string uriString) : base ()
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{
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AddPermission (access, uriString);
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}
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public WebPermission (NetworkAccess access, Regex uriRegex) : base ()
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{
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AddPermission (access, uriRegex);
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}
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// Properties
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public IEnumerator AcceptList {
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get { return m_acceptList.GetEnumerator (); }
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}
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public IEnumerator ConnectList {
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get { return m_connectList.GetEnumerator (); }
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}
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// Methods
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public void AddPermission (NetworkAccess access, string uriString)
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{
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WebPermissionInfo info = new WebPermissionInfo (WebPermissionInfoType.InfoString, uriString);
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AddPermission (access, info);
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}
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public void AddPermission (NetworkAccess access, Regex uriRegex)
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{
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WebPermissionInfo info = new WebPermissionInfo (uriRegex);
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AddPermission (access, info);
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}
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internal void AddPermission (NetworkAccess access, WebPermissionInfo info)
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{
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switch (access) {
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case NetworkAccess.Accept:
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m_acceptList.Add (info);
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break;
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case NetworkAccess.Connect:
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m_connectList.Add (info);
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break;
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default:
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string msg = Locale.GetText ("Unknown NetworkAccess value {0}.");
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throw new ArgumentException (String.Format (msg, access), "access");
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}
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}
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public override IPermission Copy ()
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{
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WebPermission permission;
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permission = new WebPermission (m_noRestriction ?
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PermissionState.Unrestricted :
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PermissionState.None);
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// as EndpointPermission's are immutable it's safe to do a shallow copy.
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permission.m_connectList = (ArrayList)
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this.m_connectList.Clone ();
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permission.m_acceptList = (ArrayList) this.m_acceptList.Clone ();
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return permission;
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}
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public override IPermission Intersect (IPermission target)
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{
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if (target == null)
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return null;
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WebPermission perm = target as WebPermission;
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if (perm == null)
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throw new ArgumentException ("Argument not of type WebPermission");
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if (m_noRestriction)
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return IntersectEmpty (perm) ? null : perm.Copy ();
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if (perm.m_noRestriction)
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return IntersectEmpty (this) ? null : this.Copy ();
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WebPermission newperm = new WebPermission (PermissionState.None);
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Intersect (this.m_connectList, perm.m_connectList, newperm.m_connectList);
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Intersect (this.m_acceptList, perm.m_acceptList, newperm.m_acceptList);
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return IntersectEmpty (newperm) ? null : newperm;
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}
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private bool IntersectEmpty (WebPermission permission)
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{
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return !permission.m_noRestriction &&
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(permission.m_connectList.Count == 0) &&
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(permission.m_acceptList.Count == 0);
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}
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[MonoTODO]
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private void Intersect (ArrayList list1, ArrayList list2, ArrayList result)
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{
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throw new NotImplementedException ();
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}
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public override bool IsSubsetOf (IPermission target)
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{
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if (target == null)
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return (!m_noRestriction && m_connectList.Count == 0 && m_acceptList.Count == 0);
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WebPermission perm = target as WebPermission;
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if (perm == null)
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throw new ArgumentException ("Parameter target must be of type WebPermission");
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if (perm.m_noRestriction)
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return true;
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if (this.m_noRestriction)
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return false;
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if (this.m_acceptList.Count == 0 && this.m_connectList.Count == 0)
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return true;
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if (perm.m_acceptList.Count == 0 && perm.m_connectList.Count == 0)
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return false;
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return IsSubsetOf (this.m_connectList, perm.m_connectList)
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&& IsSubsetOf (this.m_acceptList, perm.m_acceptList);
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}
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[MonoTODO]
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private bool IsSubsetOf (ArrayList list1, ArrayList list2)
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{
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throw new NotImplementedException ();
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}
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public bool IsUnrestricted ()
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{
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return m_noRestriction;
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}
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public override SecurityElement ToXml ()
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{
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SecurityElement root = new SecurityElement ("IPermission");
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root.AddAttribute ("class", this.GetType ().AssemblyQualifiedName);
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root.AddAttribute ("version", "1");
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if (m_noRestriction) {
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root.AddAttribute ("Unrestricted", "true");
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return root;
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}
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if (this.m_connectList.Count > 0)
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ToXml (root, "ConnectAccess", m_connectList.GetEnumerator ());
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if (this.m_acceptList.Count > 0)
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ToXml (root, "AcceptAccess", m_acceptList.GetEnumerator ());
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return root;
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}
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private void ToXml (SecurityElement root, string childName, IEnumerator enumerator)
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{
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SecurityElement child = new SecurityElement (childName, null);
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root.AddChild (child);
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while (enumerator.MoveNext ()){
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WebPermissionInfo x = enumerator.Current as WebPermissionInfo;
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if (x == null) continue;
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SecurityElement uri = new SecurityElement ("URI");
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uri.AddAttribute ("uri", x.Info);
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child.AddChild (uri);
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}
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}
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public override void FromXml (SecurityElement securityElement)
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{
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if (securityElement == null)
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throw new ArgumentNullException ("securityElement");
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// LAMESPEC: it says to throw an ArgumentNullException in this case
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if (securityElement.Tag != "IPermission")
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throw new ArgumentException ("securityElement");
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string unrestricted = securityElement.Attribute ("Unrestricted");
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if (unrestricted != null) {
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this.m_noRestriction = (String.Compare (unrestricted, "true", true) == 0);
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if (this.m_noRestriction)
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return;
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}
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this.m_noRestriction = false;
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this.m_connectList = new ArrayList ();
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this.m_acceptList = new ArrayList ();
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ArrayList children = securityElement.Children;
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foreach (SecurityElement child in children) {
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if (child.Tag == "ConnectAccess")
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FromXml (child.Children, NetworkAccess.Connect);
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else if (child.Tag == "AcceptAccess")
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FromXml (child.Children, NetworkAccess.Accept);
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}
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}
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private void FromXml (ArrayList endpoints, NetworkAccess access)
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{
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throw new NotImplementedException ();
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}
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public override IPermission Union (IPermission target)
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{
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// LAMESPEC: according to spec we should throw an
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// exception when target is null. We'll follow the
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// behaviour of MS.Net instead of the spec, also
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// because it matches the Intersect behaviour.
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if (target == null)
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return null;
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// throw new ArgumentNullException ("target");
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WebPermission perm = target as WebPermission;
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if (perm == null)
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throw new ArgumentException ("Argument not of type WebPermission");
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if (this.m_noRestriction || perm.m_noRestriction)
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return new WebPermission (PermissionState.Unrestricted);
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WebPermission copy = (WebPermission) perm.Copy ();
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copy.m_acceptList.InsertRange (copy.m_acceptList.Count, this.m_acceptList);
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copy.m_connectList.InsertRange (copy.m_connectList.Count, this.m_connectList);
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return copy;
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}
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}
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}
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