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/*
Unix SMB/CIFS implementation.
Standardised Authentication types
Copyright (C) Andrew Bartlett 2001
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef _SAMBA_AUTH_H
#define _SAMBA_AUTH_H
/* modules can use the following to determine if the interface has changed
* please increment the version number after each interface change
* with a comment and maybe update struct auth_critical_sizes.
*/
/* version 1 - version from samba 3.0 - metze */
/* version 2 - initial samba4 version - metze */
#define AUTH_INTERFACE_VERSION 2
/* AUTH_STR - string */
typedef struct auth_str
{
int len;
char *str;
} AUTH_STR;
/* AUTH_UNISTR - unicode string or buffer */
typedef struct auth_unistr
{
int len;
uchar *unistr;
} AUTH_UNISTR;
#define AUTH_FLAG_NONE 0x000000
#define AUTH_FLAG_PLAINTEXT 0x000001
#define AUTH_FLAG_LM_RESP 0x000002
#define AUTH_FLAG_NTLM_RESP 0x000004
#define AUTH_FLAG_NTLMv2_RESP 0x000008
typedef struct auth_usersupplied_info
{
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
DATA_BLOB plaintext_password;
BOOL encrypted;
uint32 auth_flags;
AUTH_STR client_domain; /* domain name string */
AUTH_STR domain; /* domain name after mapping */
AUTH_STR internal_username; /* username after mapping */
AUTH_STR smb_name; /* username before mapping */
AUTH_STR wksta_name; /* workstation name (netbios calling name) unicode string */
} auth_usersupplied_info;
#define SAM_FILL_NAME 0x01
#define SAM_FILL_INFO3 0x02
#define SAM_FILL_SAM 0x04
#define SAM_FILL_UNIX 0x08
#define SAM_FILL_ALL (SAM_FILL_NAME | SAM_FILL_INFO3 | SAM_FILL_SAM | SAM_FILL_UNIX)
typedef struct auth_serversupplied_info
{
BOOL guest;
/* This groups info is needed for when we become_user() for this uid */
int n_groups;
gid_t *groups;
/* NT group information taken from the info3 structure */
NT_USER_TOKEN *ptok;
uint8 session_key[16];
uint8 first_8_lm_hash[8];
DATA_BLOB nt_session_key;
DATA_BLOB lm_session_key;
uint32 sam_fill_level; /* How far is this structure filled? */
SAM_ACCOUNT *sam_account;
void *pam_handle;
} auth_serversupplied_info;
struct auth_context {
DATA_BLOB challenge;
/* Who set this up in the first place? */
const char *challenge_set_by;
BOOL challenge_may_be_modified;
struct auth_methods *challenge_set_method;
/* What order are the various methods in? Try to stop it changing under us */
struct auth_methods *auth_method_list;
TALLOC_CTX *mem_ctx;
const uint8 *(*get_ntlm_challenge)(struct auth_context *auth_context);
NTSTATUS (*check_ntlm_password)(const struct auth_context *auth_context,
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info);
NTSTATUS (*nt_status_squash)(NTSTATUS nt_status);
void (*free)(struct auth_context **auth_context);
};
typedef struct auth_methods
{
struct auth_methods *prev, *next;
const char *name; /* What name got this module */
NTSTATUS (*auth)(const struct auth_context *auth_context,
void *my_private_data,
TALLOC_CTX *mem_ctx,
const struct auth_usersupplied_info *user_info,
struct auth_serversupplied_info **server_info);
DATA_BLOB (*get_chal)(const struct auth_context *auth_context,
void **my_private_data,
TALLOC_CTX *mem_ctx);
/* Used to keep tabs on things like the cli for SMB server authentication */
void *private_data;
/* Function to clean up the above arbitary structure */
void (*free_private_data)(void **private_data);
/* Function to send a keepalive message on the above structure */
void (*send_keepalive)(void **private_data);
} auth_methods;
typedef struct auth_ntlmssp_state
{
TALLOC_CTX *mem_ctx;
struct auth_context *auth_context;
struct auth_serversupplied_info *server_info;
struct ntlmssp_state *ntlmssp_state;
} AUTH_NTLMSSP_STATE;
#define auth_ops __XXX_ERROR_BLA
struct auth_operations {
/* the name of the backend */
const char *name;
/* Function to create a member of the authmethods list */
NTSTATUS (*init)(struct auth_context *, const char *, struct auth_methods **);
};
/* this structure is used by backends to determine the size of some critical types */
struct auth_critical_sizes {
int interface_version;
int sizeof_auth_operations;
int sizeof_auth_methods;
int sizeof_auth_context;
int sizeof_auth_ntlmssp_state;
int sizeof_auth_usersupplied_info;
int sizeof_auth_serversupplied_info;
int sizeof_auth_str;
int sizeof_auth_unistr;
};
#endif /* _SAMBA_AUTH_H */
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