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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 <utility>
#include "build/build_config.h"
#include "net/base/address_list.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_export.h"
#include "net/dns/host_resolver.h"
#include "net/http/http_auth_handler.h"
#include "net/http/http_auth_handler_factory.h"
#if defined(OS_ANDROID)
#include "net/android/http_auth_negotiate_android.h"
#elif 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 HttpAuthPreferences;
// 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_ANDROID)
typedef net::android::HttpAuthNegotiateAndroid AuthSystem;
#elif 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();
~Factory() override;
void set_host_resolver(HostResolver* host_resolver);
#if !defined(OS_ANDROID)
// Sets the system library to use, thereby assuming ownership of
// |auth_library|.
void set_library(std::unique_ptr<AuthLibrary> auth_provider) {
auth_library_ = std::move(auth_provider);
}
#if defined(OS_POSIX)
const std::string& GetLibraryNameForTesting() const;
void set_allow_gssapi_library_load(bool allow_gssapi_library_load) {
allow_gssapi_library_load_ = allow_gssapi_library_load;
}
bool allow_gssapi_library_load_for_testing() const {
return allow_gssapi_library_load_;
}
#endif // defined(OS_POSIX)
#endif // !defined(OS_ANDROID)
// HttpAuthHandlerFactory overrides
int CreateAuthHandler(HttpAuthChallengeTokenizer* challenge,
HttpAuth::Target target,
const SSLInfo& ssl_info,
const GURL& origin,
CreateReason reason,
int digest_nonce_count,
const NetLogWithSource& net_log,
std::unique_ptr<HttpAuthHandler>* handler) override;
private:
HostResolver* resolver_ = nullptr;
#if defined(OS_WIN)
ULONG max_token_length_ = 0;
#endif
bool is_unsupported_ = false;
#if !defined(OS_ANDROID)
std::unique_ptr<AuthLibrary> auth_library_;
#if defined(OS_POSIX)
bool allow_gssapi_library_load_ = true;
#endif // defined(OS_POSIX)
#endif // !defined(OS_ANDROID)
};
HttpAuthHandlerNegotiate(
#if !defined(OS_ANDROID)
AuthLibrary* auth_library,
#endif
#if defined(OS_WIN)
ULONG max_token_length,
#endif
const HttpAuthPreferences* prefs,
HostResolver* host_resolver);
~HttpAuthHandlerNegotiate() override;
// These are public for unit tests
std::string CreateSPN(const AddressList& address_list, const GURL& orign);
const std::string& spn() const { return spn_; }
// HttpAuthHandler:
HttpAuth::AuthorizationResult HandleAnotherChallenge(
HttpAuthChallengeTokenizer* challenge) override;
bool NeedsIdentity() override;
bool AllowsDefaultCredentials() override;
bool AllowsExplicitCredentials() override;
protected:
bool Init(HttpAuthChallengeTokenizer* challenge,
const SSLInfo& ssl_info) override;
int GenerateAuthTokenImpl(const AuthCredentials* credentials,
const HttpRequestInfo* request,
CompletionOnceCallback 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_;
HostResolver* const resolver_;
// Members which are needed for DNS lookup + SPN.
AddressList address_list_;
std::unique_ptr<net::HostResolver::Request> request_;
// Things which should be consistent after first call to GenerateAuthToken.
bool already_called_;
bool has_credentials_;
AuthCredentials credentials_;
std::string spn_;
std::string channel_bindings_;
// Things which vary each round.
CompletionOnceCallback callback_;
std::string* auth_token_;
State next_state_;
const HttpAuthPreferences* http_auth_preferences_;
};
} // namespace net
#endif // NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_
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