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// Copyright (c) 2011 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 <string>
#include "build/build_config.h"
#include "net/base/address_list.h"
#include "net/base/net_export.h"
#include "net/http/http_auth_handler.h"
#include "net/http/http_auth_handler_factory.h"
#if defined(OS_WIN)
#include "net/http/http_auth_sspi_win.h"
#elif defined(OS_POSIX)
#include "net/http/http_auth_gssapi_posix.h"
#endif
namespace net {
class HostResolver;
class SingleRequestHostResolver;
class URLSecurityManager;
// 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 NET_EXPORT_PRIVATE HttpAuthHandlerNegotiate : public HttpAuthHandler {
public:
#if defined(OS_WIN)
typedef SSPILibrary AuthLibrary;
typedef HttpAuthSSPI AuthSystem;
#elif defined(OS_POSIX)
typedef GSSAPILibrary AuthLibrary;
typedef HttpAuthGSSAPI AuthSystem;
#endif
class NET_EXPORT_PRIVATE Factory : public HttpAuthHandlerFactory {
public:
Factory();
virtual ~Factory();
// |disable_cname_lookup()| and |set_disable_cname_lookup()| get/set whether
// the auth handlers generated by this factory should skip looking up the
// canonical DNS name of the the host that they are authenticating to when
// generating the SPN. The default value is false.
bool disable_cname_lookup() const { return disable_cname_lookup_; }
void set_disable_cname_lookup(bool disable_cname_lookup) {
disable_cname_lookup_ = disable_cname_lookup;
}
// |use_port()| and |set_use_port()| get/set whether the auth handlers
// generated by this factory should include the port number of the server
// they are authenticating to when constructing a Kerberos SPN. The default
// value is false.
bool use_port() const { return use_port_; }
void set_use_port(bool use_port) { use_port_ = use_port; }
void set_host_resolver(HostResolver* host_resolver);
// Sets the system library to use, thereby assuming ownership of
// |auth_library|.
void set_library(AuthLibrary* auth_library) {
auth_library_.reset(auth_library);
}
virtual int CreateAuthHandler(
HttpAuth::ChallengeTokenizer* challenge,
HttpAuth::Target target,
const GURL& origin,
CreateReason reason,
int digest_nonce_count,
const BoundNetLog& net_log,
scoped_ptr<HttpAuthHandler>* handler) OVERRIDE;
private:
bool disable_cname_lookup_;
bool use_port_;
HostResolver* resolver_;
#if defined(OS_WIN)
ULONG max_token_length_;
bool first_creation_;
#endif
bool is_unsupported_;
scoped_ptr<AuthLibrary> auth_library_;
};
HttpAuthHandlerNegotiate(AuthLibrary* sspi_library,
#if defined(OS_WIN)
ULONG max_token_length,
#endif
URLSecurityManager* url_security_manager,
HostResolver* host_resolver,
bool disable_cname_lookup,
bool use_port);
virtual ~HttpAuthHandlerNegotiate();
// These are public for unit tests
std::wstring CreateSPN(const AddressList& address_list, const GURL& orign);
const std::wstring& spn() const { return spn_; }
// HttpAuthHandler:
virtual HttpAuth::AuthorizationResult HandleAnotherChallenge(
HttpAuth::ChallengeTokenizer* challenge) OVERRIDE;
virtual bool NeedsIdentity() OVERRIDE;
virtual bool AllowsDefaultCredentials() OVERRIDE;
virtual bool AllowsExplicitCredentials() OVERRIDE;
protected:
virtual bool Init(HttpAuth::ChallengeTokenizer* challenge) OVERRIDE;
virtual int GenerateAuthTokenImpl(const AuthCredentials* credentials,
const HttpRequestInfo* request,
const CompletionCallback& callback,
std::string* auth_token) OVERRIDE;
private:
enum State {
STATE_RESOLVE_CANONICAL_NAME,
STATE_RESOLVE_CANONICAL_NAME_COMPLETE,
STATE_GENERATE_AUTH_TOKEN,
STATE_GENERATE_AUTH_TOKEN_COMPLETE,
STATE_NONE,
};
void OnIOComplete(int result);
void DoCallback(int result);
int DoLoop(int result);
int DoResolveCanonicalName();
int DoResolveCanonicalNameComplete(int rv);
int DoGenerateAuthToken();
int DoGenerateAuthTokenComplete(int rv);
bool CanDelegate() const;
AuthSystem auth_system_;
bool disable_cname_lookup_;
bool use_port_;
HostResolver* const resolver_;
// Members which are needed for DNS lookup + SPN.
AddressList address_list_;
scoped_ptr<SingleRequestHostResolver> single_resolve_;
// Things which should be consistent after first call to GenerateAuthToken.
bool already_called_;
bool has_credentials_;
AuthCredentials credentials_;
std::wstring spn_;
// Things which vary each round.
CompletionCallback callback_;
std::string* auth_token_;
State next_state_;
const URLSecurityManager* url_security_manager_;
};
} // namespace net
#endif // NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_
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