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// Copyright 2011 The Chromium Authors
// 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 <memory>
#include <string>
#include <utility>
#include "base/memory/raw_ptr.h"
#include "build/build_config.h"
#include "net/base/completion_once_callback.h"
#include "net/base/net_export.h"
#include "net/base/network_isolation_key.h"
#include "net/dns/host_resolver.h"
#include "net/http/http_auth_handler.h"
#include "net/http/http_auth_handler_factory.h"
#include "net/http/http_auth_mechanism.h"
#if BUILDFLAG(IS_ANDROID)
#include "net/android/http_auth_negotiate_android.h"
#elif BUILDFLAG(IS_WIN)
#include "net/http/http_auth_sspi_win.h"
#elif BUILDFLAG(IS_POSIX)
#include "net/http/http_auth_gssapi_posix.h"
#endif
namespace url {
class SchemeHostPort;
}
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 BUILDFLAG(IS_WIN)
typedef SSPILibrary AuthLibrary;
#elif BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_ANDROID)
typedef GSSAPILibrary AuthLibrary;
#endif
class NET_EXPORT_PRIVATE Factory : public HttpAuthHandlerFactory {
public:
explicit Factory(HttpAuthMechanismFactory negotiate_auth_system_factory);
~Factory() override;
#if !BUILDFLAG(IS_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 BUILDFLAG(IS_POSIX)
const std::string& GetLibraryNameForTesting() const;
#endif // BUILDFLAG(IS_POSIX)
#endif // !BUILDFLAG(IS_ANDROID)
// HttpAuthHandlerFactory overrides
int CreateAuthHandler(HttpAuthChallengeTokenizer* challenge,
HttpAuth::Target target,
const SSLInfo& ssl_info,
const NetworkAnonymizationKey& network_isolation_key,
const url::SchemeHostPort& scheme_host_port,
CreateReason reason,
int digest_nonce_count,
const NetLogWithSource& net_log,
HostResolver* host_resolver,
std::unique_ptr<HttpAuthHandler>* handler) override;
private:
HttpAuthMechanismFactory negotiate_auth_system_factory_;
bool is_unsupported_ = false;
#if !BUILDFLAG(IS_ANDROID)
std::unique_ptr<AuthLibrary> auth_library_;
#endif // !BUILDFLAG(IS_ANDROID)
};
HttpAuthHandlerNegotiate(std::unique_ptr<HttpAuthMechanism> auth_system,
const HttpAuthPreferences* prefs,
HostResolver* host_resolver);
~HttpAuthHandlerNegotiate() override;
// HttpAuthHandler
bool NeedsIdentity() override;
bool AllowsDefaultCredentials() override;
bool AllowsExplicitCredentials() override;
const std::string& spn_for_testing() const { return spn_; }
protected:
// HttpAuthHandler
bool Init(HttpAuthChallengeTokenizer* challenge,
const SSLInfo& ssl_info,
const NetworkAnonymizationKey& network_isolation_key) override;
int GenerateAuthTokenImpl(const AuthCredentials* credentials,
const HttpRequestInfo* request,
CompletionOnceCallback callback,
std::string* auth_token) override;
HttpAuth::AuthorizationResult HandleAnotherChallengeImpl(
HttpAuthChallengeTokenizer* challenge) override;
private:
enum State {
STATE_RESOLVE_CANONICAL_NAME,
STATE_RESOLVE_CANONICAL_NAME_COMPLETE,
STATE_GENERATE_AUTH_TOKEN,
STATE_GENERATE_AUTH_TOKEN_COMPLETE,
STATE_NONE,
};
std::string CreateSPN(const std::string& server,
const url::SchemeHostPort& scheme_host_port);
void OnIOComplete(int result);
void DoCallback(int result);
int DoLoop(int result);
int DoResolveCanonicalName();
int DoResolveCanonicalNameComplete(int rv);
int DoGenerateAuthToken();
int DoGenerateAuthTokenComplete(int rv);
HttpAuth::DelegationType GetDelegationType() const;
std::unique_ptr<HttpAuthMechanism> auth_system_;
const raw_ptr<HostResolver> resolver_;
NetworkAnonymizationKey network_anonymization_key_;
// Members which are needed for DNS lookup + SPN.
std::unique_ptr<HostResolver::ResolveHostRequest> resolve_host_request_;
// Things which should be consistent after first call to GenerateAuthToken.
bool already_called_ = false;
bool has_credentials_ = false;
AuthCredentials credentials_;
std::string spn_;
std::string channel_bindings_;
// Things which vary each round.
CompletionOnceCallback callback_;
raw_ptr<std::string> auth_token_ = nullptr;
State next_state_ = STATE_NONE;
raw_ptr<const HttpAuthPreferences> http_auth_preferences_;
};
} // namespace net
#endif // NET_HTTP_HTTP_AUTH_HANDLER_NEGOTIATE_H_
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