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//
// ChannelProtectionRequirements.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005-2006 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;
using System.Net.Security;
using System.Collections.Generic;
using System.ServiceModel;
using System.ServiceModel.Description;
using System.Xml;
namespace System.ServiceModel.Security
{
// Represents sp:SignedParts and sp:EncryptedParts in
// sp:SupportingTokens/ws:Policy/.
public class ChannelProtectionRequirements
{
bool is_readonly;
ScopedMessagePartSpecification in_enc, in_sign, out_enc, out_sign;
public ChannelProtectionRequirements ()
{
in_enc = new ScopedMessagePartSpecification ();
out_enc = new ScopedMessagePartSpecification ();
in_sign = new ScopedMessagePartSpecification ();
out_sign = new ScopedMessagePartSpecification ();
}
public ChannelProtectionRequirements (
ChannelProtectionRequirements other)
{
if (other == null)
throw new ArgumentNullException ("other");
in_enc = new ScopedMessagePartSpecification (other.in_enc);
out_enc = new ScopedMessagePartSpecification (other.out_enc);
in_sign = new ScopedMessagePartSpecification (other.in_sign);
out_sign = new ScopedMessagePartSpecification (other.out_sign);
}
public bool IsReadOnly {
get { return is_readonly; }
}
public ScopedMessagePartSpecification IncomingEncryptionParts {
get { return in_enc; }
}
public ScopedMessagePartSpecification IncomingSignatureParts {
get { return in_sign; }
}
public ScopedMessagePartSpecification OutgoingEncryptionParts {
get { return out_enc; }
}
public ScopedMessagePartSpecification OutgoingSignatureParts {
get { return out_sign; }
}
public void Add (
ChannelProtectionRequirements protectionRequirements)
{
Add (protectionRequirements, false);
}
public void Add (
ChannelProtectionRequirements protectionRequirements,
bool channelScopeOnly)
{
if (is_readonly)
throw new InvalidOperationException ("This ChannelProtectionRequirements is read-only.");
AddScopedParts (
protectionRequirements.IncomingEncryptionParts,
IncomingEncryptionParts,
channelScopeOnly);
AddScopedParts (
protectionRequirements.IncomingSignatureParts,
IncomingSignatureParts,
channelScopeOnly);
AddScopedParts (
protectionRequirements.OutgoingEncryptionParts,
OutgoingEncryptionParts,
channelScopeOnly);
AddScopedParts (
protectionRequirements.OutgoingSignatureParts,
OutgoingSignatureParts,
channelScopeOnly);
}
void AddScopedParts (ScopedMessagePartSpecification src, ScopedMessagePartSpecification dst, bool channelOnly)
{
dst.AddParts (src.ChannelParts);
if (channelOnly)
return;
foreach (string a in src.Actions) {
MessagePartSpecification m;
src.TryGetParts (a, out m);
src.AddParts (m);
}
}
public ChannelProtectionRequirements CreateInverse ()
{
ChannelProtectionRequirements r =
new ChannelProtectionRequirements ();
AddScopedParts (in_enc, r.out_enc, false);
AddScopedParts (in_sign, r.out_sign, false);
AddScopedParts (out_enc, r.in_enc, false);
AddScopedParts (out_sign, r.in_sign, false);
return r;
}
public void MakeReadOnly ()
{
is_readonly = true;
in_enc.MakeReadOnly ();
in_sign.MakeReadOnly ();
out_enc.MakeReadOnly ();
out_sign.MakeReadOnly ();
}
internal static ChannelProtectionRequirements CreateFromContract (ContractDescription cd)
{
ChannelProtectionRequirements cp =
new ChannelProtectionRequirements ();
List<XmlQualifiedName> enc = new List<XmlQualifiedName> ();
List<XmlQualifiedName> sig = new List<XmlQualifiedName> ();
if (cd.HasProtectionLevel) {
switch (cd.ProtectionLevel) {
case ProtectionLevel.EncryptAndSign:
cp.IncomingEncryptionParts.ChannelParts.IsBodyIncluded = true;
cp.OutgoingEncryptionParts.ChannelParts.IsBodyIncluded = true;
goto case ProtectionLevel.Sign;
case ProtectionLevel.Sign:
cp.IncomingSignatureParts.ChannelParts.IsBodyIncluded = true;
cp.OutgoingSignatureParts.ChannelParts.IsBodyIncluded = true;
break;
}
}
foreach (OperationDescription od in cd.Operations) {
foreach (MessageDescription md in od.Messages) {
enc.Clear ();
sig.Clear ();
ProtectionLevel mplv =
md.HasProtectionLevel ? md.ProtectionLevel :
od.HasProtectionLevel ? od.ProtectionLevel :
ProtectionLevel.EncryptAndSign; // default
foreach (MessageHeaderDescription hd in md.Headers)
AddPartProtectionRequirements (enc, sig, hd, cp);
ScopedMessagePartSpecification spec;
bool includeBodyEnc = mplv == ProtectionLevel.EncryptAndSign;
bool includeBodySig = mplv != ProtectionLevel.None;
// enc
spec = md.Direction == MessageDirection.Input ?
cp.IncomingEncryptionParts :
cp.OutgoingEncryptionParts;
spec.AddParts (new MessagePartSpecification (includeBodyEnc, enc.ToArray ()), md.Action);
// sig
spec = md.Direction == MessageDirection.Input ?
cp.IncomingSignatureParts :
cp.OutgoingSignatureParts;
spec.AddParts (new MessagePartSpecification (includeBodySig, sig.ToArray ()), md.Action);
}
}
return cp;
}
static void AddPartProtectionRequirements (List<XmlQualifiedName> enc,
List<XmlQualifiedName> sig,
MessageHeaderDescription pd,
ChannelProtectionRequirements cp)
{
if (!pd.HasProtectionLevel)
return; // no specific part indication
switch (pd.ProtectionLevel) {
case ProtectionLevel.EncryptAndSign:
enc.Add (new XmlQualifiedName (pd.Name, pd.Namespace));
goto case ProtectionLevel.Sign;
case ProtectionLevel.Sign:
sig.Add (new XmlQualifiedName (pd.Name, pd.Namespace));
break;
}
}
}
}
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