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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_GSSAPI_POSIX_H_
#define NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
#include <string>
#include "base/gtest_prod_util.h"
#include "base/native_library.h"
#include "net/http/http_auth.h"
#define GSS_USE_FUNCTION_POINTERS
#include "net/third_party/gssapi/gssapi.h"
class GURL;
namespace net {
class HttpRequestInfo;
class ProxyInfo;
// GSSAPILibrary is introduced so unit tests can mock the calls to the GSSAPI
// library. The default implementation attempts to load one of the standard
// GSSAPI library implementations, then simply passes the arguments on to
// that implementation.
class GSSAPILibrary {
public:
virtual ~GSSAPILibrary() {}
// Initializes the library, including any necessary dynamic libraries.
virtual bool Init() = 0;
// These methods match the ones in the GSSAPI library.
virtual gssapi::OM_uint32 import_name(
gssapi::OM_uint32* minor_status,
const gssapi::gss_buffer_t input_name_buffer,
const gssapi::gss_OID input_name_type,
gssapi::gss_name_t* output_name) = 0;
virtual gssapi::OM_uint32 release_name(
gssapi::OM_uint32* minor_status,
gssapi::gss_name_t* input_name) = 0;
virtual gssapi::OM_uint32 release_buffer(
gssapi::OM_uint32* minor_status,
gssapi::gss_buffer_t buffer) = 0;
virtual gssapi::OM_uint32 display_status(
gssapi::OM_uint32* minor_status,
gssapi::OM_uint32 status_value,
int status_type,
const gssapi::gss_OID mech_type,
gssapi::OM_uint32* message_contex,
gssapi::gss_buffer_t status_string) = 0;
virtual gssapi::OM_uint32 init_sec_context(
gssapi::OM_uint32* minor_status,
const gssapi::gss_cred_id_t initiator_cred_handle,
gssapi::gss_ctx_id_t* context_handle,
const gssapi::gss_name_t target_name,
const gssapi::gss_OID mech_type,
gssapi::OM_uint32 req_flags,
gssapi::OM_uint32 time_req,
const gssapi::gss_channel_bindings_t input_chan_bindings,
const gssapi::gss_buffer_t input_token,
gssapi::gss_OID* actual_mech_type,
gssapi::gss_buffer_t output_token,
gssapi::OM_uint32* ret_flags,
gssapi::OM_uint32* time_rec) = 0;
virtual gssapi::OM_uint32 wrap_size_limit(
gssapi::OM_uint32* minor_status,
const gssapi::gss_ctx_id_t context_handle,
int conf_req_flag,
gssapi::gss_qop_t qop_req,
gssapi::OM_uint32 req_output_size,
gssapi::OM_uint32* max_input_size) = 0;
// Get the default GSSPILibrary instance. The object returned is a singleton
// instance, and the caller should not delete it.
static GSSAPILibrary* GetDefault();
};
// GSSAPISharedLibrary class is defined here so that unit tests can access it.
class GSSAPISharedLibrary : public GSSAPILibrary {
public:
GSSAPISharedLibrary();
virtual ~GSSAPISharedLibrary();
// GSSAPILibrary methods:
virtual bool Init();
virtual gssapi::OM_uint32 import_name(
gssapi::OM_uint32* minor_status,
const gssapi::gss_buffer_t input_name_buffer,
const gssapi::gss_OID input_name_type,
gssapi::gss_name_t* output_name);
virtual gssapi::OM_uint32 release_name(
gssapi::OM_uint32* minor_status,
gssapi::gss_name_t* input_name);
virtual gssapi::OM_uint32 release_buffer(
gssapi::OM_uint32* minor_status,
gssapi::gss_buffer_t buffer);
virtual gssapi::OM_uint32 display_status(
gssapi::OM_uint32* minor_status,
gssapi::OM_uint32 status_value,
int status_type,
const gssapi::gss_OID mech_type,
gssapi::OM_uint32* message_contex,
gssapi::gss_buffer_t status_string);
virtual gssapi::OM_uint32 init_sec_context(
gssapi::OM_uint32* minor_status,
const gssapi::gss_cred_id_t initiator_cred_handle,
gssapi::gss_ctx_id_t* context_handle,
const gssapi::gss_name_t target_name,
const gssapi::gss_OID mech_type,
gssapi::OM_uint32 req_flags,
gssapi::OM_uint32 time_req,
const gssapi::gss_channel_bindings_t input_chan_bindings,
const gssapi::gss_buffer_t input_token,
gssapi::gss_OID* actual_mech_type,
gssapi::gss_buffer_t output_token,
gssapi::OM_uint32* ret_flags,
gssapi::OM_uint32* time_rec);
virtual gssapi::OM_uint32 wrap_size_limit(
gssapi::OM_uint32* minor_status,
const gssapi::gss_ctx_id_t context_handle,
int conf_req_flag,
gssapi::gss_qop_t qop_req,
gssapi::OM_uint32 req_output_size,
gssapi::OM_uint32* max_input_size);
private:
FRIEND_TEST_ALL_PREFIXES(HttpAuthGSSAPIPOSIXTest, GSSAPIStartup);
bool InitImpl();
static base::NativeLibrary LoadSharedObject();
bool BindMethods();
bool initialized_;
// Need some way to invalidate the library.
base::NativeLibrary gssapi_library_;
// Function pointers
gssapi::gss_import_name_type import_name_;
gssapi::gss_release_name_type release_name_;
gssapi::gss_release_buffer_type release_buffer_;
gssapi::gss_display_status_type display_status_;
gssapi::gss_init_sec_context_type init_sec_context_;
gssapi::gss_wrap_size_limit_type wrap_size_limit_;
};
// TODO(cbentzel): Share code with HttpAuthSSPI.
class HttpAuthGSSAPI {
public:
HttpAuthGSSAPI(GSSAPILibrary* library,
const std::string& scheme,
const gssapi::gss_OID gss_oid);
~HttpAuthGSSAPI();
bool NeedsIdentity() const;
bool IsFinalRound() const;
bool ParseChallenge(HttpAuth::ChallengeTokenizer* tok);
// Generates an authentication token.
// The return value is an error code. If it's not |OK|, the value of
// |*auth_token| is unspecified.
// |spn| is the Service Principal Name of the server that the token is
// being generated for.
// If this is the first round of a multiple round scheme, credentials are
// obtained using |*username| and |*password|. If |username| and |password|
// are NULL, the default credentials are used instead.
int GenerateAuthToken(const std::wstring* username,
const std::wstring* password,
const std::wstring& spn,
const HttpRequestInfo* request,
const ProxyInfo* proxy,
std::string* out_credentials);
private:
int OnFirstRound(const std::wstring* username,
const std::wstring* password);
int GetNextSecurityToken(const std::wstring& spn,
gssapi::gss_buffer_t in_token,
gssapi::gss_buffer_t out_token);
std::string scheme_;
std::wstring username_;
std::wstring password_;
gssapi::gss_OID gss_oid_;
GSSAPILibrary* library_;
std::string decoded_server_auth_token_;
gssapi::gss_ctx_id_t sec_context_;
};
} // namespace net
#endif // NET_HTTP_HTTP_AUTH_GSSAPI_POSIX_H_
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