/*
 * 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 2009 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#ifndef _SMB_SHARE_H
#define	_SMB_SHARE_H

#include <sys/param.h>
#include <smbsrv/string.h>
#include <smbsrv/hash_table.h>
#include <smbsrv/wintypes.h>
#include <smbsrv/lmerr.h>
#include <smbsrv/smb_common_door.h>

#ifndef _KERNEL
#include <libshare.h>
#else
#include <sys/door.h>
#endif

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Share Properties:
 *
 * name			Advertised name of the share
 *
 * ad-container		Active directory container in which the share
 * 			will be published
 *
 * csc			Client-side caching (CSC) options applied to this share
 * 	disabled	The client MUST NOT cache any files
 * 	manual		The client should not automatically cache every file
 * 			that it	opens
 * 	auto		The client may cache every file that it opens
 * 	vdo		The client may cache every file that it opens
 *			and satisfy file requests from its local cache.
 *
 * catia		CATIA character substitution
 *
 * guestok		Determines whether guest access is allowed
 *
 * next three properties use access-list a al NFS
 *
 * ro			list of hosts that will have read-only access
 * rw			list of hosts that will have read/write access
 * none			list of hosts that won't be allowed access
 */
#define	SHOPT_AD_CONTAINER	"ad-container"
#define	SHOPT_NAME		"name"
#define	SHOPT_CSC		"csc"
#define	SHOPT_CATIA		"catia"
#define	SHOPT_GUEST		"guestok"
#define	SHOPT_RO		"ro"
#define	SHOPT_RW		"rw"
#define	SHOPT_NONE		"none"

#define	SMB_DEFAULT_SHARE_GROUP	"smb"
#define	SMB_PROTOCOL_NAME	"smb"

#define	SMB_SHR_MAP		0
#define	SMB_SHR_UNMAP		1
#define	SMB_SHR_DISP_CONT_STR	"continue"
#define	SMB_SHR_DISP_TERM_STR	"terminate"

/*
 * RAP protocol share related commands only understand
 * share names in OEM format and there is a 13 char size
 * limitation
 */
#define	SMB_SHARE_OEMNAME_MAX		13
#define	SMB_SHARE_CMNT_MAX		(64 * MTS_MB_CHAR_MAX)

/*
 *	struct SHARE_INFO_1 {
 *		char		shi1_netname[13]
 *		char		shi1_pad;
 *		unsigned short	shi1_type
 *		char		*shi1_remark;
 *	}
 */
#define	SHARE_INFO_1_SIZE	(SMB_SHARE_OEMNAME_MAX + 1 + 2 + 4)

/*
 * Share flags:
 *
 * SMB_SHRF_TRANS	Transient share
 * SMB_SHRF_PERM	Permanent share
 * SMB_SHRF_AUTOHOME	Autohome share.
 * SMB_SHRF_LONGNAME	Share name in OEM is longer than 13 chars
 * SMB_SHRF_CSC_DISABLED	Client-side caching is disabled for this share
 * SMB_SHRF_CSC_MANUAL	Manual client-side caching is allowed
 * SMB_SHRF_CSC_AUTO	Automatic client-side caching (CSC) is allowed
 * SMB_SHRF_CSC_VDO	Automatic CSC and local cache lookup is allowed
 * SMB_SHRF_ACC_OPEN	No restrictions set
 * SMB_SHRF_ACC_NONE	"none" property set
 * SMB_SHRF_ACC_RO	"ro" (readonly) property set
 * SMB_SHRF_ACC_RW	"rw" (read/write) property set
 * SMB_SHRF_ACC_ALL	All of the access bits
 * SMB_SHRF_ADMIN	Admin share
 * SMB_SHRF_CATIA	CATIA character translation on/off
 * SMB_SHRF_GUEST_OK	Guest access on/off
 *
 * SMB_SHRF_MAP		Map command is specified
 * SMB_SHRF_UNMAP	Unmap command is specified
 * SMB_SHRF_DISP_TERM	Disposition is set to terminate
 * SMB_SHRF_EXEC_MASK	All of the exec bits
 *
 * All autohome shares are transient but not all transient shares are autohome.
 * IPC$ and drive letter shares (e.g. d$, e$, etc) are transient but
 * not autohome.
 */
#define	SMB_SHRF_TRANS		0x0001
#define	SMB_SHRF_PERM		0x0002
#define	SMB_SHRF_AUTOHOME	0x0004
#define	SMB_SHRF_LONGNAME	0x0008

#define	SMB_SHRF_CSC_MASK	0x00F0
#define	SMB_SHRF_CSC_DISABLED	0x0010
#define	SMB_SHRF_CSC_MANUAL	0x0020
#define	SMB_SHRF_CSC_AUTO	0x0040
#define	SMB_SHRF_CSC_VDO	0x0080

/* Access Flags */
#define	SMB_SHRF_ACC_OPEN	0x0000
#define	SMB_SHRF_ACC_NONE	0x0100
#define	SMB_SHRF_ACC_RO		0x0200
#define	SMB_SHRF_ACC_RW		0x0400
#define	SMB_SHRF_ACC_ALL	0x0F00

#define	SMB_SHRF_ADMIN		0x1000
#define	SMB_SHRF_CATIA		0x2000
#define	SMB_SHRF_GUEST_OK	0x4000

/* Exec Flags */
#define	SMB_SHRF_MAP		0x10000
#define	SMB_SHRF_UNMAP		0x20000
#define	SMB_SHRF_DISP_TERM	0x40000
#define	SMB_SHRF_EXEC_MASK	0x70000

/*
 * refcnt is currently only used for autohome.  autohome needs a refcnt
 * because a user can map his autohome share from more than one client
 * at the same time and the share should only be removed when the last
 * one is disconnected
 */
typedef struct smb_share {
	char		shr_name[MAXNAMELEN];
	char		shr_path[MAXPATHLEN];
	char		shr_cmnt[SMB_SHARE_CMNT_MAX];
	char		shr_container[MAXPATHLEN];
	char		shr_oemname[SMB_SHARE_OEMNAME_MAX];
	uint32_t	shr_flags;
	uint32_t	shr_type;
	uint32_t	shr_refcnt;
	uint32_t	shr_access_value;	/* host return access value */
	char		shr_access_none[MAXPATHLEN];
	char		shr_access_ro[MAXPATHLEN];
	char		shr_access_rw[MAXPATHLEN];
} smb_share_t;

typedef struct smb_shriter {
	smb_share_t	si_share;
	HT_ITERATOR	si_hashiter;
	boolean_t	si_first;
} smb_shriter_t;

#define	LMSHARES_PER_REQUEST  10
typedef struct smb_shrlist {
	int		sl_cnt;
	smb_share_t	sl_shares[LMSHARES_PER_REQUEST];
} smb_shrlist_t;

/*
 * This structure is a helper for building NetShareEnum response
 * in user space and send it back down to kernel.
 *
 * es_username	name of the user requesting the shares list which
 * 		is used to detect if the user has any autohome
 * es_bufsize	size of the response buffer
 * es_buf	pointer to the response buffer
 * es_ntotal	total number of shares exported by server which
 * 		their OEM names is less then 13 chars
 * es_nsent	number of shares that can fit in the specified buffer
 * es_datasize	actual data size (share's data) which was encoded
 * 		in the response buffer
 */
typedef struct smb_enumshare_info {
	char		*es_username;
	uint16_t	es_bufsize;
	char		*es_buf;
	uint16_t	es_ntotal;
	uint16_t	es_nsent;
	uint16_t	es_datasize;
} smb_enumshare_info_t;

typedef struct smb_execsub_info {
	char		*e_winname;
	char		*e_userdom;
	smb_inaddr_t	e_srv_ipaddr;
	smb_inaddr_t	e_cli_ipaddr;
	char		*e_cli_netbiosname;
	uid_t		e_uid;
} smb_execsub_info_t;

/*
 * LanMan share API (for both SMB kernel module and GUI/CLI sub-system)
 *
 * NOTE: If any error is encounted by either the door server or client,
 * NERR_InternalError will be returned by most functions, smb_share_count
 * will return -1.
 */

#ifndef _KERNEL

/*
 * CIFS share management functions exported by libmlsvc
 */
int smb_shr_start(void);
void smb_shr_stop(void);
int smb_shr_load(void);
void smb_shr_iterinit(smb_shriter_t *);
smb_share_t *smb_shr_iterate(smb_shriter_t *);
void smb_shr_list(int, smb_shrlist_t *);
int smb_shr_count(void);
uint32_t smb_shr_add(smb_share_t *);
uint32_t smb_shr_remove(char *);
uint32_t smb_shr_rename(char *, char *);
uint32_t smb_shr_get(char *, smb_share_t *);
uint32_t smb_shr_modify(smb_share_t *);
uint32_t smb_shr_get_realpath(const char *, char *, int);
void smb_shr_hostaccess(smb_share_t *, smb_inaddr_t *);
int smb_shr_exec(char *, smb_execsub_info_t *, int);

boolean_t smb_shr_exists(char *);
int smb_shr_is_special(char *);
boolean_t smb_shr_is_restricted(char *);
boolean_t smb_shr_is_admin(char *);
boolean_t smb_shr_chkname(char *);

sa_handle_t smb_shr_sa_enter(void);
void smb_shr_sa_exit(void);
void smb_shr_sa_csc_option(const char *, smb_share_t *);
char *smb_shr_sa_csc_name(const smb_share_t *);
void smb_shr_sa_catia_option(const char *, smb_share_t *);

/*
 * CIFS share management API exported for other processes
 */
uint32_t smb_share_list(int, smb_shrlist_t *);
int smb_share_count(void);
uint32_t smb_share_delete(char *);
uint32_t smb_share_rename(char *, char *);
uint32_t smb_share_create(smb_share_t *);
uint32_t smb_share_modify(smb_share_t *);

#else

door_handle_t smb_kshare_init(int);
void smb_kshare_fini(door_handle_t);
uint32_t smb_kshare_getinfo(door_handle_t, char *, smb_share_t *,
    smb_inaddr_t *);
int smb_kshare_upcall(door_handle_t, void *, boolean_t);
uint32_t smb_kshare_enum(door_handle_t, smb_enumshare_info_t *);
uint32_t smb_kshare_exec(door_handle_t, char *, smb_execsub_info_t *, int);

#endif

#define	SMB_SHARE_DNAME		"/var/run/smb_share_door"
#define	SMB_SHARE_DSIZE		(65 * 1024)

/*
 * Door interface
 *
 * Define door operations
 */
#define	SMB_SHROP_NUM_SHARES		1
#define	SMB_SHROP_DELETE		2
#define	SMB_SHROP_RENAME		3
#define	SMB_SHROP_GETINFO		4
#define	SMB_SHROP_ADD			5
#define	SMB_SHROP_MODIFY		6
#define	SMB_SHROP_LIST			7
#define	SMB_SHROP_ENUM			8
#define	SMB_SHROP_EXEC			9

/*
 * Door server status
 *
 * SMB_SHARE_DERROR is returned by the door server if there is problem
 * with marshalling/unmarshalling. Otherwise, SMB_SHARE_DSUCCESS is
 * returned.
 *
 */
#define	SMB_SHARE_DSUCCESS		0
#define	SMB_SHARE_DERROR		-1

void smb_dr_get_share(smb_dr_ctx_t *, smb_share_t *);
void smb_dr_put_share(smb_dr_ctx_t *, smb_share_t *);

void smb_share_door_clnt_init(void);
void smb_share_door_clnt_fini(void);

#ifdef __cplusplus
}
#endif

#endif /* _SMB_SHARE_H */