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//
// System.Net.SocketPermissionAttribute.cs
//
// Author:
// Lawrence Pit (loz@cable.a2000.nl)
// Sebastien Pouliot <sebastien@ximian.com>
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Security;
using System.Security.Permissions;
namespace System.Net {
[AttributeUsage (AttributeTargets.Assembly
| AttributeTargets.Class
| AttributeTargets.Struct
| AttributeTargets.Constructor
| AttributeTargets.Method, AllowMultiple = true, Inherited = false)
]
[Serializable]
public sealed class SocketPermissionAttribute : CodeAccessSecurityAttribute {
// Fields
string m_access;
string m_host;
string m_port;
string m_transport;
// Constructors
public SocketPermissionAttribute (SecurityAction action)
: base (action)
{
}
// Properties
public string Access {
get { return m_access; }
set {
if (m_access != null)
AlreadySet ("Access");
m_access = value;
}
}
public string Host {
get { return m_host; }
set {
if (m_host != null)
AlreadySet ("Host");
m_host = value;
}
}
public string Port {
get { return m_port; }
set {
if (m_port != null)
AlreadySet ("Port");
m_port = value;
}
}
public string Transport {
get { return m_transport; }
set {
if (m_transport != null)
AlreadySet ("Transport");
m_transport = value;
}
}
// Methods
public override IPermission CreatePermission ()
{
if (this.Unrestricted)
return new SocketPermission (PermissionState.Unrestricted);
string missing = String.Empty;
if (m_access == null)
missing += "Access, ";
if (m_host == null)
missing += "Host, ";
if (m_port == null)
missing += "Port, ";
if (m_transport == null)
missing += "Transport, ";
if (missing.Length > 0) {
string msg = Locale.GetText ("The value(s) for {0} must be specified.");
missing = missing.Substring (0, missing.Length - 2); // remove last separator
throw new ArgumentException (String.Format (msg, missing));
}
NetworkAccess access;
TransportType transport;
int port = SocketPermission.AllPorts;
if (String.Compare (m_access, "Connect", true) == 0)
access = NetworkAccess.Connect;
else if (String.Compare (m_access, "Accept", true) == 0)
access = NetworkAccess.Accept;
else {
string msg = Locale.GetText ("The parameter value for 'Access', '{1}, is invalid.");
throw new ArgumentException (String.Format (msg, m_access));
}
if (String.Compare (m_port, "All", true) != 0) {
try {
port = Int32.Parse (m_port);
}
catch {
string msg = Locale.GetText ("The parameter value for 'Port', '{1}, is invalid.");
throw new ArgumentException (String.Format (msg, m_port));
}
// test whether port number is valid..
new IPEndPoint (1, port);
}
try {
transport = (TransportType) Enum.Parse (typeof (TransportType), m_transport, true);
}
catch {
string msg = Locale.GetText ("The parameter value for 'Transport', '{1}, is invalid.");
throw new ArgumentException (String.Format (msg, m_transport));
}
SocketPermission perm = new SocketPermission (PermissionState.None);
perm.AddPermission (access, transport, m_host, port);
return perm;
}
// helpers
internal void AlreadySet (string property)
{
string msg = Locale.GetText ("The parameter '{0}' can be set only once.");
throw new ArgumentException (String.Format (msg, property), property);
}
}
}
|
