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//
// FlashCrossDomainPolicy.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
// Moonlight List (moonlight-list@lists.ximian.com)
//
// Copyright (C) 2009 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.
//
#define NET_2_1
#if NET_2_1
using System;
using MonoForks.System;
using System.Collections.Generic;
using System.IO;
using MonoForks.System.Net;
using UnityEngine;
namespace MonoForks.System.Windows.Browser.Net {
partial class FlashCrossDomainPolicy : BaseDomainPolicy {
private string site_control;
public int PolicyPort { get; set; }
public FlashCrossDomainPolicy ()
{
AllowedAccesses = new List<AllowAccessFrom> ();
AllowedHttpRequestHeaders = new List<AllowHttpRequestHeadersFrom> ();
PolicyPort = 843;
}
public static FlashCrossDomainPolicy DenyPolicy = new FlashCrossDomainPolicy();
public List<AllowAccessFrom> AllowedAccesses { get; private set; }
public List<AllowHttpRequestHeadersFrom> AllowedHttpRequestHeaders { get; private set; }
public string SiteControl {
get { return String.IsNullOrEmpty (site_control) ? "all" : site_control; }
set { site_control = value; }
}
public bool IsSocketConnectionAllowed(int port)
{
foreach(var allowed in AllowedAccesses)
{
if (allowed.IsSocketConnectionAllowed (port, PolicyPort))
return true;
}
return false;
}
public override bool IsAllowed (Uri uri, string [] headerKeys)
{
switch (SiteControl) {
case "all":
case "master-only":
case "by-ftp-filename":
break;
default:
// others, e.g. 'none', are not supported/accepted
Log.Msg("rejected because SiteControl does not have a valid value");
return false;
}
bool any = false;
if (AllowedAccesses.Count > 0)
{
foreach (var a in AllowedAccesses)
{
if (a.IsAllowed(uri, headerKeys))
{
any = true;
}
}
}
if (!any)
{
Log.Msg("Rejected because there was no AllowedAcces entry in the crossdomain file allowing this request.");
return false;
}
if (AllowedHttpRequestHeaders.Count > 0)
foreach(var h in AllowedHttpRequestHeaders)
if (h.IsRejected(uri,headerKeys)) return false;
return true;
}
public class AllowAccessFrom {
public AllowAccessFrom ()
{
Secure = true; // true by default
}
public string Domain { get; set; }
public bool AllowAnyPort { get; set; }
public int [] ToPorts { get; set; }
public bool Secure { get; set; }
public bool IsAllowed (Uri uri, string [] headerKeys)
{
Log.Msg("Checking if "+uri+" is a valid domain");
if (!CheckDomain(uri)) return false;
if (!AllowAnyPort && ToPorts != null && Array.IndexOf(ToPorts, uri.Port) < 0)
{
Log.Msg("requested port: "+uri.Port+" is not allowed by specified portrange");
return false;
}
// if Secure is false then it allows applications from HTTP to download data from HTTPS servers
if (!Secure)
return true;
// if Secure is true then only application on HTTPS servers can access data on HTTPS servers
if (ApplicationUri.Scheme == Uri.UriSchemeHttps)
return (uri.Scheme == Uri.UriSchemeHttps);
// otherwise FILE/HTTP applications can access HTTP uris
Log.Msg("All requirements met, the request is approved");
return true;
}
public bool IsSocketConnectionAllowed(int port, int policyport)
{
if (policyport>1024 && port<1024) return false;
bool portok = false;
if (AllowAnyPort) portok = true;
if (ToPorts != null)
{
foreach (int allowedport in ToPorts)
{
if (allowedport == port)
portok = true;
}
if (!portok) return false;
}
//for now we only support socket policies that say all domains are fine.
return (Domain == "*");
}
bool CheckDomain(Uri uri)
{
Log.Msg("Checking request-host: "+uri.Host+" against valid domain: "+Domain);
if (Domain == "*") return true;
if (ApplicationUri.Host == Domain) return true;
if (Domain[0] != '*') return false;
string match = Domain.Substring(1, Domain.Length - 1);
if (uri.Host.EndsWith(match)) return true;
return false;
}
}
public class AllowHttpRequestHeadersFrom {
public AllowHttpRequestHeadersFrom ()
{
Headers = new Headers ();
}
public string Domain { get; set; }
public bool AllowAllHeaders { get; set; }
public Headers Headers { get; private set; }
public bool Secure { get; set; }
public bool IsRejected (Uri uri, string [] headerKeys)
{
// "A Flash policy file must allow access to all domains to be used by the Silverlight runtime."
// http://msdn.microsoft.com/en-us/library/cc645032(VS.95).aspx
//if (Domain != "*")
// return false;
if (Headers.IsAllowed (headerKeys))
return false;
// if Secure is false then it allows applications from HTTP to download data from HTTPS servers
if (!Secure)
return true;
// if Secure is true then only application on HTTPS servers can access data on HTTPS servers
if (ApplicationUri.Scheme == Uri.UriSchemeHttps)
return (uri.Scheme == Uri.UriSchemeHttps);
// otherwise FILE/HTTP applications can access HTTP uris
return true;
}
}
}
}
#endif
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