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//
// Mono.Http.NtlmClient
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (c) 2003 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.
//
#if SECURITY_DEP
#if MONO_SECURITY_ALIAS
extern alias MonoSecurity;
using MonoSecurity::Mono.Security.Protocol.Ntlm;
#else
using Mono.Security.Protocol.Ntlm;
#endif
using System;
using System.Collections;
using System.Net;
using System.Runtime.CompilerServices;
namespace Mono.Http
{
class NtlmSession
{
MessageBase message;
public NtlmSession ()
{
}
public Authorization Authenticate (string challenge, WebRequest webRequest, ICredentials credentials)
{
HttpWebRequest request = webRequest as HttpWebRequest;
if (request == null)
return null;
NetworkCredential cred = credentials.GetCredential (request.RequestUri, "NTLM");
if (cred == null)
return null;
string userName = cred.UserName;
string domain = cred.Domain;
string password = cred.Password;
if (userName == null || userName == "")
return null;
if (String.IsNullOrEmpty (domain)) {
int idx = userName.IndexOf ('\\');
if (idx == -1) {
idx = userName.IndexOf ('/');
}
if (idx >= 0) {
domain = userName.Substring (0, idx);
userName = userName.Substring (idx + 1);
}
}
bool completed = false;
if (message == null) {
Type1Message type1 = new Type1Message ();
type1.Domain = domain;
type1.Host = ""; // MS does not send it
type1.Flags |= NtlmFlags.NegotiateNtlm2Key;
message = type1;
} else if (message.Type == 1) {
// Should I check the credentials?
if (challenge == null) {
message = null;
return null;
}
Type2Message type2 = new Type2Message (Convert.FromBase64String (challenge));
if (password == null)
password = "";
Type3Message type3 = new Type3Message (type2);
type3.Username = userName;
type3.Password = password;
type3.Domain = domain;
message = type3;
completed = true;
} else {
// Should I check the credentials?
// type must be 3 here
if (challenge == null || challenge == String.Empty) {
Type1Message type1 = new Type1Message ();
type1.Domain = domain;
type1.Host = ""; // MS does not send it
message = type1;
} else {
completed = true;
}
}
string token = "NTLM " + Convert.ToBase64String (message.GetBytes ());
return new Authorization (token, completed);
}
}
class NtlmClient : IAuthenticationModule
{
static readonly ConditionalWeakTable<HttpWebRequest, NtlmSession> cache =
new ConditionalWeakTable<HttpWebRequest, NtlmSession> ();
public Authorization Authenticate (string challenge, WebRequest webRequest, ICredentials credentials)
{
if (credentials == null || challenge == null)
return null;
string header = challenge.Trim ();
int idx = header.ToLower ().IndexOf ("ntlm");
if (idx == -1)
return null;
idx = header.IndexOfAny (new char [] {' ', '\t'});
if (idx != -1) {
header = header.Substring (idx).Trim ();
} else {
header = null;
}
HttpWebRequest request = webRequest as HttpWebRequest;
if (request == null)
return null;
lock (cache) {
var ds = cache.GetValue (request, x => new NtlmSession ());
return ds.Authenticate (header, webRequest, credentials);
}
}
public Authorization PreAuthenticate (WebRequest webRequest, ICredentials credentials)
{
return null;
}
public string AuthenticationType {
get { return "NTLM"; }
}
public bool CanPreAuthenticate {
get { return false; }
}
}
}
#endif
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