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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_
#define NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_

#include "build/build_config.h"

#include <string>

#include "net/http/http_auth_handler.h"

#if defined(OS_WIN)
#include "net/http/http_auth_sspi_win.h"
#endif

namespace net {

// Handler for WWW-Authenticate: Negotiate protocol.
//
// See http://tools.ietf.org/html/rfc4178 and http://tools.ietf.org/html/rfc4559
// for more information about the protocol.

class HttpAuthHandlerNegotiate : public HttpAuthHandler {
 public:
  HttpAuthHandlerNegotiate();

  virtual bool NeedsIdentity();

  virtual bool IsFinalRound();

  virtual bool AllowDefaultCredentials();

  virtual int GenerateAuthToken(const std::wstring& username,
                                const std::wstring& password,
                                const HttpRequestInfo* request,
                                const ProxyInfo* proxy,
                                std::string* auth_token);

  virtual int GenerateDefaultAuthToken(const HttpRequestInfo* request,
                                       const ProxyInfo* proxy,
                                       std::string* auth_token);

 protected:
  virtual bool Init(std::string::const_iterator challenge_begin,
                    std::string::const_iterator challenge_end);

 private:
  ~HttpAuthHandlerNegotiate();

#if defined(OS_WIN)
  HttpAuthSSPI auth_sspi_;
#endif
};

}  // namespace net

#endif  // NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_