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samba-mirror/auth/gensec/gensec.h

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/*
Unix SMB/CIFS implementation.
Generic Authentication Interface
Copyright (C) Andrew Tridgell 2003
r6028: A MAJOR update to intergrate the new credentails system fully with GENSEC, and to pull SCHANNEL into GENSEC, by making it less 'special'. GENSEC now no longer has it's own handling of 'set username' etc, instead it uses cli_credentials calls. In order to link the credentails code right though Samba, a lot of interfaces have changed to remove 'username, domain, password' arguments, and these have been replaced with a single 'struct cli_credentials'. In the session setup code, a new parameter 'workgroup' contains the client/server current workgroup, which seems unrelated to the authentication exchange (it was being filled in from the auth info). This allows in particular kerberos to only call back for passwords when it actually needs to perform the kinit. The kerberos code has been modified not to use the SPNEGO provided 'principal name' (in the mechListMIC), but to instead use the name the host was connected to as. This better matches Microsoft behaviour, is more secure and allows better use of standard kerberos functions. To achieve this, I made changes to our socket code so that the hostname (before name resolution) is now recorded on the socket. In schannel, most of the code from librpc/rpc/dcerpc_schannel.c is now in libcli/auth/schannel.c, and it looks much more like a standard GENSEC module. The actual sign/seal code moved to libcli/auth/schannel_sign.c in a previous commit. The schannel credentails structure is now merged with the rest of the credentails, as many of the values (username, workstation, domain) where already present there. This makes handling this in a generic manner much easier, as there is no longer a custom entry-point. The auth_domain module continues to be developed, but is now just as functional as auth_winbind. The changes here are consequential to the schannel changes. The only removed function at this point is the RPC-LOGIN test (simulating the load of a WinXP login), which needs much more work to clean it up (it contains copies of too much code from all over the torture suite, and I havn't been able to penetrate its 'structure'). Andrew Bartlett (This used to be commit 2301a4b38a21aa60917973451687063d83d18d66)
2005-03-24 07:14:06 +03:00
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __GENSEC_H__
#define __GENSEC_H__
#include "../lib/util/data_blob.h"
#include "libcli/util/ntstatus.h"
#define GENSEC_SASL_NAME_NTLMSSP "NTLM"
#define GENSEC_OID_NTLMSSP "1.3.6.1.4.1.311.2.2.10"
#define GENSEC_OID_SPNEGO "1.3.6.1.5.5.2"
#define GENSEC_OID_KERBEROS5 "1.2.840.113554.1.2.2"
#define GENSEC_OID_KERBEROS5_OLD "1.2.840.48018.1.2.2"
#define GENSEC_OID_KERBEROS5_USER2USER "1.2.840.113554.1.2.2.3"
enum gensec_priority {
GENSEC_SPNEGO = 90,
GENSEC_GSSAPI = 80,
GENSEC_KRB5 = 70,
GENSEC_SCHANNEL = 60,
GENSEC_NTLMSSP = 50,
GENSEC_SASL = 20,
GENSEC_OTHER = 10,
GENSEC_EXTERNAL = 0
};
struct gensec_security;
struct gensec_target {
const char *principal;
const char *hostname;
const char *service;
const char *service_description;
};
#define GENSEC_FEATURE_SESSION_KEY 0x00000001
#define GENSEC_FEATURE_SIGN 0x00000002
#define GENSEC_FEATURE_SEAL 0x00000004
#define GENSEC_FEATURE_DCE_STYLE 0x00000008
#define GENSEC_FEATURE_ASYNC_REPLIES 0x00000010
#define GENSEC_FEATURE_DATAGRAM_MODE 0x00000020
#define GENSEC_FEATURE_SIGN_PKT_HEADER 0x00000040
#define GENSEC_FEATURE_NEW_SPNEGO 0x00000080
#define GENSEC_FEATURE_UNIX_TOKEN 0x00000100
#define GENSEC_FEATURE_NTLM_CCACHE 0x00000200
#define GENSEC_FEATURE_LDAP_STYLE 0x00000400
#define GENSEC_FEATURE_NO_AUTHZ_LOG 0x00000800
#define GENSEC_EXPIRE_TIME_INFINITY (NTTIME)0x8000000000000000LL
/* GENSEC mode */
enum gensec_role
{
GENSEC_SERVER,
GENSEC_CLIENT
};
struct auth_session_info;
struct cli_credentials;
struct gensec_settings;
struct tevent_context;
struct tevent_req;
struct smb_krb5_context;
struct tsocket_address;
struct gensec_settings {
struct loadparm_context *lp_ctx;
const char *target_hostname;
/* this allows callers to specify a specific set of ops that
* should be used, rather than those loaded by the plugin
* mechanism */
const struct gensec_security_ops * const *backends;
/* To fill in our own name in the NTLMSSP server */
const char *server_dns_domain;
const char *server_dns_name;
const char *server_netbios_domain;
const char *server_netbios_name;
};
struct gensec_security_ops;
struct gensec_security_ops_wrapper;
#define GENSEC_INTERFACE_VERSION 0
/* this structure is used by backends to determine the size of some critical types */
struct gensec_critical_sizes;
const struct gensec_critical_sizes *gensec_interface_version(void);
/* Socket wrapper */
struct gensec_security;
struct auth4_context;
struct auth_user_info_dc;
struct loadparm_context;
NTSTATUS gensec_subcontext_start(TALLOC_CTX *mem_ctx,
struct gensec_security *parent,
struct gensec_security **gensec_security);
NTSTATUS gensec_client_start(TALLOC_CTX *mem_ctx,
struct gensec_security **gensec_security,
struct gensec_settings *settings);
NTSTATUS gensec_start_mech_by_ops(struct gensec_security *gensec_security,
const struct gensec_security_ops *ops);
NTSTATUS gensec_start_mech_by_sasl_list(struct gensec_security *gensec_security,
const char **sasl_names);
void gensec_set_max_update_size(struct gensec_security *gensec_security,
uint32_t max_update_size);
size_t gensec_max_update_size(struct gensec_security *gensec_security);
NTSTATUS gensec_update(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
const DATA_BLOB in, DATA_BLOB *out);
NTSTATUS gensec_update_ev(struct gensec_security *gensec_security,
TALLOC_CTX *out_mem_ctx,
struct tevent_context *ev,
const DATA_BLOB in, DATA_BLOB *out);
struct tevent_req *gensec_update_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
struct gensec_security *gensec_security,
const DATA_BLOB in);
NTSTATUS gensec_update_recv(struct tevent_req *req, TALLOC_CTX *out_mem_ctx, DATA_BLOB *out);
void gensec_want_feature(struct gensec_security *gensec_security,
uint32_t feature);
bool gensec_have_feature(struct gensec_security *gensec_security,
uint32_t feature);
NTTIME gensec_expire_time(struct gensec_security *gensec_security);
NTSTATUS gensec_set_credentials(struct gensec_security *gensec_security, struct cli_credentials *credentials);
/**
* Set the target service (such as 'http' or 'host') on a GENSEC context - ensures it is talloc()ed
*
* This is used for Kerberos service principal name resolution.
*/
NTSTATUS gensec_set_target_service(struct gensec_security *gensec_security, const char *service);
const char *gensec_get_target_service(struct gensec_security *gensec_security);
NTSTATUS gensec_set_target_hostname(struct gensec_security *gensec_security, const char *hostname);
const char *gensec_get_target_hostname(struct gensec_security *gensec_security);
/**
* Set the target service (such as 'samr') on an GENSEC context - ensures it is talloc()ed.
*
* This is not the Kerberos service principal, instead this is a
* constant value that can be logged as part of authentication and
* authorization logging
*/
const char *gensec_get_target_service_description(struct gensec_security *gensec_security);
NTSTATUS gensec_set_target_service_description(struct gensec_security *gensec_security,
const char *service);
NTSTATUS gensec_session_key(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
DATA_BLOB *session_key);
NTSTATUS gensec_start_mech_by_oid(struct gensec_security *gensec_security,
const char *mech_oid);
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const char *gensec_get_name_by_oid(struct gensec_security *gensec_security, const char *oid_string);
struct cli_credentials *gensec_get_credentials(struct gensec_security *gensec_security);
NTSTATUS gensec_init(void);
NTSTATUS gensec_register(const struct gensec_security_ops *ops);
const struct gensec_security_ops *gensec_security_by_oid(struct gensec_security *gensec_security,
const char *oid_string);
const struct gensec_security_ops *gensec_security_by_sasl_name(struct gensec_security *gensec_security,
const char *sasl_name);
const struct gensec_security_ops *gensec_security_by_auth_type(
struct gensec_security *gensec_security,
uint32_t auth_type);
const struct gensec_security_ops *gensec_security_by_name(struct gensec_security *gensec_security,
const char *name);
const struct gensec_security_ops **gensec_security_mechs(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx);
const struct gensec_security_ops_wrapper *gensec_security_by_oid_list(
struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const char * const *oid_strings,
const char *skip);
const char **gensec_security_oids(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const char *skip);
const char **gensec_security_oids_from_ops_wrapped(TALLOC_CTX *mem_ctx,
const struct gensec_security_ops_wrapper *wops);
size_t gensec_max_input_size(struct gensec_security *gensec_security);
size_t gensec_max_wrapped_size(struct gensec_security *gensec_security);
NTSTATUS gensec_unseal_packet(struct gensec_security *gensec_security,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig);
NTSTATUS gensec_check_packet(struct gensec_security *gensec_security,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
const DATA_BLOB *sig);
size_t gensec_sig_size(struct gensec_security *gensec_security, size_t data_size);
NTSTATUS gensec_seal_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig);
NTSTATUS gensec_sign_packet(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const uint8_t *data, size_t length,
const uint8_t *whole_pdu, size_t pdu_length,
DATA_BLOB *sig);
NTSTATUS gensec_start_mech(struct gensec_security *gensec_security);
NTSTATUS gensec_start_mech_by_authtype(struct gensec_security *gensec_security,
uint8_t auth_type, uint8_t auth_level);
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const char *gensec_get_name_by_authtype(struct gensec_security *gensec_security, uint8_t authtype);
NTSTATUS gensec_server_start(TALLOC_CTX *mem_ctx,
struct gensec_settings *settings,
struct auth4_context *auth_context,
struct gensec_security **gensec_security);
NTSTATUS gensec_session_info(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
struct auth_session_info **session_info);
NTSTATUS gensec_set_local_address(struct gensec_security *gensec_security,
const struct tsocket_address *local);
NTSTATUS gensec_set_remote_address(struct gensec_security *gensec_security,
const struct tsocket_address *remote);
const struct tsocket_address *gensec_get_local_address(struct gensec_security *gensec_security);
const struct tsocket_address *gensec_get_remote_address(struct gensec_security *gensec_security);
NTSTATUS gensec_start_mech_by_name(struct gensec_security *gensec_security,
const char *name);
NTSTATUS gensec_unwrap(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out);
NTSTATUS gensec_wrap(struct gensec_security *gensec_security,
TALLOC_CTX *mem_ctx,
const DATA_BLOB *in,
DATA_BLOB *out);
const struct gensec_security_ops * const *gensec_security_all(void);
bool gensec_security_ops_enabled(const struct gensec_security_ops *ops, struct gensec_security *security);
const struct gensec_security_ops **gensec_use_kerberos_mechs(TALLOC_CTX *mem_ctx,
const struct gensec_security_ops * const *old_gensec_list,
struct cli_credentials *creds);
NTSTATUS gensec_start_mech_by_sasl_name(struct gensec_security *gensec_security,
const char *sasl_name);
int gensec_setting_int(struct gensec_settings *settings, const char *mechanism, const char *name, int default_value);
bool gensec_setting_bool(struct gensec_settings *settings, const char *mechanism, const char *name, bool default_value);
NTSTATUS gensec_set_target_principal(struct gensec_security *gensec_security, const char *principal);
const char *gensec_get_target_principal(struct gensec_security *gensec_security);
NTSTATUS gensec_generate_session_info_pac(TALLOC_CTX *mem_ctx,
struct gensec_security *gensec_security,
struct smb_krb5_context *smb_krb5_context,
DATA_BLOB *pac_blob,
const char *principal_string,
const struct tsocket_address *remote_address,
struct auth_session_info **session_info);
NTSTATUS gensec_magic_check_krb5_oid(struct gensec_security *unused,
const DATA_BLOB *blob);
#endif /* __GENSEC_H__ */