/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright 2010 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 *
 * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
 */

#ifndef _SMB_TOKEN_H
#define	_SMB_TOKEN_H

#include <smbsrv/smb_inet.h>
#include <smbsrv/smb_privilege.h>
#include <smbsrv/smb_sid.h>

/*
 * Don't want <smbsrv/netrauth.h> in here, but
 * uts/common/fs/smbsrv/smb_authenticate.c
 * wants this.  Todo: cleanup
 */
#define	NETR_NETWORK_LOGON			0x02

#ifdef __cplusplus
extern "C" {
#endif

/*
 * 32-bit opaque buffer (non-null terminated strings)
 * See also: smb_buf32_xdr()
 */
typedef struct smb_buf32 {
	uint32_t	len;
	uint8_t		*val;
} smb_buf32_t;

/*
 * Access Token
 *
 * An access token identifies a user, the user's privileges and the
 * list of groups of which the user is a member. This information is
 * used when access is requested to an object by comparing this
 * information with the DACL in the object's security descriptor.
 *
 * There should be one unique token per user per session per client.
 *
 * Access Token Flags
 *
 * SMB_ATF_GUEST	Token belongs to guest user
 * SMB_ATF_ANON		Token belongs to anonymous user
 * 			and it's only good for IPC Connection.
 * SMB_ATF_POWERUSER	Token belongs to a Power User member
 * SMB_ATF_BACKUPOP	Token belongs to a Power User member
 * SMB_ATF_ADMIN	Token belongs to a Domain Admins member
 */
#define	SMB_ATF_ANON		0x00000001
#define	SMB_ATF_GUEST		0x00000002
#define	SMB_ATF_POWERUSER	0x00000004
#define	SMB_ATF_BACKUPOP	0x00000008
#define	SMB_ATF_ADMIN		0x00000010

#define	SMB_POSIX_GRPS_SIZE(n) \
	(sizeof (smb_posix_grps_t) + (n - 1) * sizeof (gid_t))
/*
 * It consists of the primary and supplementary POSIX groups.
 * See also: smb_posix_grps_xdr()
 */
typedef struct smb_posix_grps {
	uint32_t	pg_ngrps;
	gid_t		pg_grps[ANY_SIZE_ARRAY];
} smb_posix_grps_t;

/*
 * An NT-style logon "token" (NT terminology)
 * See also: smb_token_xdr()
 */
typedef struct smb_token {
	smb_id_t	tkn_user;
	smb_id_t	tkn_owner;
	smb_id_t	tkn_primary_grp;
	smb_ids_t	tkn_win_grps;
	smb_privset_t	*tkn_privileges;
	char		*tkn_account_name;
	char		*tkn_domain_name;
	uint32_t	tkn_flags;
	uint32_t	tkn_audit_sid;
	smb_buf32_t	tkn_ssnkey;
	smb_posix_grps_t *tkn_posix_grps;
} smb_token_t;

/*
 * Details required to authenticate a user.
 * See also: smb_logon_xdr()
 */
typedef struct smb_logon {
	uint16_t	lg_level;
	char		*lg_username;	/* requested username */
	char		*lg_domain;	/* requested domain */
	char		*lg_e_username;	/* effective username */
	char		*lg_e_domain;	/* effective domain */
	char		*lg_workstation;
	smb_inaddr_t	lg_clnt_ipaddr;
	smb_inaddr_t	lg_local_ipaddr;
	uint16_t	lg_local_port;
	smb_buf32_t	lg_challenge_key;
	smb_buf32_t	lg_nt_password;
	smb_buf32_t	lg_lm_password;
	uint32_t	lg_ntlm_flags;
	int		lg_native_os;
	int		lg_native_lm;
	uint32_t	lg_flags;
	uint32_t	lg_logon_id;	/* filled in user space */
	uint32_t	lg_domain_type;	/* filled in user space */
	uint32_t	lg_secmode;	/* filled in user space */
	uint32_t	lg_status;	/* filled in user space */
} smb_logon_t;

/*
 * This is the name of the local (AF_UNIX) socket
 * where the SMB auth. service listens.
 */
#define	SMB_AUTHSVC_SOCKNAME	"/var/smb/lipc/smbauth"

/*
 * Maximum number of authentcation conversations at one time.
 * Note this is _NOT_ the max. number of logged on users,
 * which can be much larger.
 */
#define	SMB_AUTHSVC_MAXTHREAD	256

/*
 * Messages to and from the local security authority
 * Type codes:
 */
typedef enum smb_lsa_mtype {
	/* reply types */
	LSA_MTYPE_OK	= 0,
	LSA_MTYPE_ERROR,
	LSA_MTYPE_ES_DONE,	/* ext. sec: authenticated */
	LSA_MTYPE_ES_CONT,	/* more processing required */
	LSA_MTYPE_TOKEN,	/* smb_token_t */

	/* request types */
	LSA_MTYPE_OLDREQ,	/* non-ext. sec. session setup */
	LSA_MTYPE_CLINFO,	/* client info sent at start of ES */
	LSA_MTYPE_ESFIRST,	/* spnego initial message */
	LSA_MTYPE_ESNEXT,	/* spnego continuation */
	LSA_MTYPE_GETTOK	/* after ES auth, get token */
} smb_lsa_mtype_t;

/*
 * msg: header common to all message types
 */
typedef struct smb_lsa_msg_hdr {
	uint32_t	lmh_msgtype;	/* smb_lsa_mtype_t */
	uint32_t	lmh_msglen;	/* size of what follows */
} smb_lsa_msg_hdr_t;

/*
 * eresp: error response
 * msgtype: LSA_MTYPE_ERESP
 */
typedef struct smb_lsa_eresp {
	uint32_t	ler_ntstatus;
	uint16_t	ler_errclass;
	uint16_t	ler_errcode;
} smb_lsa_eresp_t;

/*
 * Message for LSA_MTYPE_CLINFO
 */
typedef struct smb_lsa_clinfo {
	smb_inaddr_t	lci_clnt_ipaddr;
	unsigned char	lci_challenge_key[8];
	int		lci_native_os;
	int		lci_native_lm;
} smb_lsa_clinfo_t;

struct XDR;
int smb_logon_xdr(struct XDR *, smb_logon_t *);
int smb_token_xdr(struct XDR *, smb_token_t *);

#if defined(_KERNEL) || defined(_FAKE_KERNEL)
void smb_token_free(smb_token_t *);
#else /* _KERNEL */
smb_token_t *smb_logon(smb_logon_t *);
void smb_logon_abort(void);
void smb_token_destroy(smb_token_t *);
uint8_t *smb_token_encode(smb_token_t *, uint32_t *);
void smb_token_log(smb_token_t *);
smb_logon_t *smb_logon_decode(uint8_t *, uint32_t);
void smb_logon_free(smb_logon_t *);
#endif /* _KERNEL */

int smb_token_query_privilege(smb_token_t *token, int priv_id);
boolean_t smb_token_valid(smb_token_t *);

#ifdef __cplusplus
}
#endif

#endif /* _SMB_TOKEN_H */