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/*
Copyright (C) 2013 Simo Sorce <simo@samba.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _GSS_NTLMSSP_H_
#define _GSS_NTLMSSP_H_
#include "ntlm.h"
#include "crypto.h"
#define SEC_LEVEL_MIN 0
#define SEC_LEVEL_MAX 5
#define SEC_LM_OK 0x01
#define SEC_NTLM_OK 0x02
#define SEC_EXT_SEC_OK 0x04
#define SEC_V2_ONLY 0x08
#define SEC_DC_LM_OK 0x10
#define SEC_DC_NTLM_OK 0x20
#define SEC_DC_V2_OK 0x40
#define NTLMSSP_DEFAULT_CLIENT_FLAGS ( \
NTLMSSP_NEGOTIATE_ALWAYS_SIGN | \
NTLMSSP_NEGOTIATE_128 | \
NTLMSSP_NEGOTIATE_56 | \
NTLMSSP_NEGOTIATE_NTLM | \
NTLMSSP_REQUEST_TARGET | \
NTLMSSP_NEGOTIATE_UNICODE)
struct gssntlm_name {
enum ntlm_name_type {
GSSNTLM_NAME_ANON,
GSSNTLM_NAME_USER,
GSSNTLM_NAME_SERVER
} type;
union {
struct {
char *domain;
char *name;
} user;
struct {
char *name;
} server;
} data;
};
struct gssntlm_cred {
enum ntlm_cred_type {
GSSNTLM_CRED_NONE,
GSSNTLM_CRED_ANON,
GSSNTLM_CRED_USER,
GSSNTLM_CRED_SERVER
} type;
union {
struct {
int dummy;
} anon;
struct {
struct gssntlm_name user;
struct ntlm_key nt_hash;
struct ntlm_key lm_hash;
} user;
struct {
int dummy;
} server;
} cred;
int lm_compatibility_level;
};
struct gssntlm_signseal {
struct ntlm_key sign_key;
struct ntlm_key seal_key;
struct ntlm_rc4_handle *seal_handle;
uint32_t seq_num;
};
struct gssntlm_ctx {
enum gssntlm_role {
GSSNTLM_CLIENT,
GSSNTLM_SERVER,
GSSNTLM_DOMAIN_SERVER,
GSSNTLM_DOMAIN_CONTROLLER
} role;
enum {
NTLMSSP_STAGE_INIT = 0,
NTLMSSP_STAGE_NEGOTIATE,
NTLMSSP_STAGE_CHALLENGE,
NTLMSSP_STAGE_AUTHENTICATE,
NTLMSSP_STAGE_DONE
} stage;
struct gssntlm_cred cred;
char *workstation;
struct ntlm_ctx *ntlm;
struct ntlm_buffer nego_msg;
struct ntlm_buffer chal_msg;
struct ntlm_buffer auth_msg;
/* requested gss fags */
uint32_t gss_flags;
/* negotiated flags */
uint32_t neg_flags;
/* TODO: Add whitelist of servers we are allowed to communicate with */
struct ntlm_key exported_session_key;
struct gssntlm_signseal send;
struct gssntlm_signseal recv;
};
uint8_t gssntlm_required_security(int security_level,
enum gssntlm_role role);
void gssntlm_int_release_cred(struct gssntlm_cred *cred);
int gssntlm_copy_creds(struct gssntlm_cred *in, struct gssntlm_cred *out);
extern const gss_OID_desc gssntlm_oid;
extern const gss_OID_desc gssntlm_oid;
uint32_t gssntlm_acquire_cred(uint32_t *minor_status,
gss_name_t desired_name,
uint32_t time_req,
gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
uint32_t *time_rec);
uint32_t gssntlm_acquire_cred_from(uint32_t *minor_status,
gss_name_t desired_name,
uint32_t time_req,
gss_OID_set desired_mechs,
gss_cred_usage_t cred_usage,
gss_const_key_value_set_t cred_store,
gss_cred_id_t *output_cred_handle,
gss_OID_set *actual_mechs,
uint32_t *time_rec);
uint32_t gssntlm_release_cred(uint32_t *minor_status,
gss_cred_id_t *cred_handle);
uint32_t gssntlm_import_name(uint32_t *minor_status,
gss_buffer_t input_name_buffer,
gss_OID input_name_type,
gss_name_t *output_name);
uint32_t gssntlm_import_name_by_mech(uint32_t *minor_status,
gss_OID mech_type,
gss_buffer_t input_name_buffer,
gss_OID input_name_type,
gss_name_t *output_name);
uint32_t gssntlm_release_name(uint32_t *minor_status,
gss_name_t *input_name);
uint32_t gssntlm_init_sec_context(uint32_t *minor_status,
gss_cred_id_t claimant_cred_handle,
gss_ctx_id_t *context_handle,
gss_name_t target_name,
gss_OID mech_type,
uint32_t req_flags,
uint32_t time_req,
gss_channel_bindings_t input_chan_bindings,
gss_buffer_t input_token,
gss_OID *actual_mech_type,
gss_buffer_t output_token,
uint32_t *ret_flags,
uint32_t *time_rec);
uint32_t gssntlm_delete_sec_context(uint32_t *minor_status,
gss_ctx_id_t *context_handle,
gss_buffer_t output_token);
#endif /* _GSS_NTLMSSP_H_ */
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