/*
 * 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright 2019 Nexenta Systems, Inc.  All rights reserved.
 */

#ifndef _SMBSRV_SMB_DOOR_H
#define _SMBSRV_SMB_DOOR_H

#include <sys/door.h>
#include <smb/wintypes.h>
#include <smbsrv/smb_xdr.h>
#include <smbsrv/smb_token.h>

#ifdef __cplusplus
extern "C" {
#endif

#define SMBD_DOOR_NAME                  "/var/run/smbd_door"

#define SMB_DOOR_CALL_RETRIES           3

/*
 * Opcodes for smbd door.
 *
 * SMB_DR_NULL is the equivalent of the NULL RPC.  It ensures that an
 * opcode of zero is not misinterpreted as an operational door call
 * and it is available as a test interface.
 *
 * SMB_DR_ASYNC_RESPONSE delivers the response part of an asynchronous
 * request and must be processed as a synchronous request.
 *
 * See also: smb_doorhdr_opname()
 */
typedef enum smb_dopcode {
        SMB_DR_NULL = 0,
        SMB_DR_ASYNC_RESPONSE,
        SMB_DR_USER_AUTH_LOGON,
        SMB_DR_USER_NONAUTH_LOGON,
        SMB_DR_USER_AUTH_LOGOFF,
        SMB_DR_LOOKUP_SID,
        SMB_DR_LOOKUP_NAME,
        SMB_DR_JOIN,
        SMB_DR_GET_DCINFO,
        SMB_DR_VSS_GET_COUNT,
        SMB_DR_VSS_GET_SNAPSHOTS,
        SMB_DR_VSS_MAP_GMTTOKEN,
        SMB_DR_ADS_FIND_HOST,
        SMB_DR_QUOTA_QUERY,
        SMB_DR_QUOTA_SET,
        SMB_DR_DFS_GET_REFERRALS,
        SMB_DR_SHR_HOSTACCESS,
        SMB_DR_SHR_EXEC,
        SMB_DR_NOTIFY_DC_CHANGED,
        SMB_DR_LOOKUP_LSID,
        SMB_DR_LOOKUP_LNAME
} smb_dopcode_t;

struct smb_event;

typedef struct smb_doorarg {
        smb_doorhdr_t           da_hdr;
        door_arg_t              da_arg;
        xdrproc_t               da_req_xdr;
        xdrproc_t               da_rsp_xdr;
        void                    *da_req_data;
        void                    *da_rsp_data;
        smb_dopcode_t           da_opcode;
        const char              *da_opname;
        struct smb_event        *da_event;
        uint32_t                da_flags;
} smb_doorarg_t;

/*
 * Door call return codes.
 */
#define SMB_DOP_SUCCESS                 0
#define SMB_DOP_NOT_CALLED              1
#define SMB_DOP_DECODE_ERROR            2
#define SMB_DOP_ENCODE_ERROR            3
#define SMB_DOP_EMPTYBUF                4

#if !defined(_KERNEL) && !defined(_FAKE_KERNEL)
char *smb_common_encode(void *, xdrproc_t, size_t *);
int smb_common_decode(char *, size_t, xdrproc_t, void *);
char *smb_string_encode(char *, size_t *);
int smb_string_decode(smb_string_t *, char *, size_t);
#endif /* !_KERNEL */

/* libfksmbsrv "kdoor" callback to smbd-d */
typedef int fksmb_kdoor_disp_func_t(smb_doorarg_t *);

/* libfksmbsrv "opipe" callback to smbd-d */
typedef int fksmb_opipe_disp_func_t(door_arg_t *);

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

/*
 * door operations
 */
#define SMB_SHROP_NUM_SHARES            1
#define SMB_SHROP_DELETE                2
#define SMB_SHROP_RENAME                3
#define SMB_SHROP_ADD                   4
#define SMB_SHROP_MODIFY                5
#define SMB_SHROP_LIST                  6

/*
 * 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

typedef struct smb_dr_ctx {
        char *ptr;
        char *start_ptr;
        char *end_ptr;
        int status;
} smb_dr_ctx_t;

smb_dr_ctx_t *smb_dr_decode_start(char *, int);
int smb_dr_decode_finish(smb_dr_ctx_t *);

smb_dr_ctx_t *smb_dr_encode_start(char *, int);
int smb_dr_encode_finish(smb_dr_ctx_t *, unsigned int *);

int32_t smb_dr_get_int32(smb_dr_ctx_t *);
DWORD smb_dr_get_dword(smb_dr_ctx_t *);
uint32_t smb_dr_get_uint32(smb_dr_ctx_t *);
int64_t smb_dr_get_int64(smb_dr_ctx_t *);
uint64_t smb_dr_get_uint64(smb_dr_ctx_t *);
unsigned short smb_dr_get_ushort(smb_dr_ctx_t *);

void smb_dr_put_int32(smb_dr_ctx_t *, int32_t);
void smb_dr_put_dword(smb_dr_ctx_t *, DWORD);
void smb_dr_put_uint32(smb_dr_ctx_t *, uint32_t);
void smb_dr_put_int64(smb_dr_ctx_t *, int64_t);
void smb_dr_put_uint64(smb_dr_ctx_t *, uint64_t);
void smb_dr_put_ushort(smb_dr_ctx_t *, unsigned short);

char *smb_dr_get_string(smb_dr_ctx_t *);
void smb_dr_put_string(smb_dr_ctx_t *, const char *);
void smb_dr_free_string(char *);

void smb_dr_put_word(smb_dr_ctx_t *, WORD);
WORD smb_dr_get_word(smb_dr_ctx_t *);

void smb_dr_put_BYTE(smb_dr_ctx_t *, BYTE);
BYTE smb_dr_get_BYTE(smb_dr_ctx_t *);

void smb_dr_put_buf(smb_dr_ctx_t *, unsigned char *, int);
int smb_dr_get_buf(smb_dr_ctx_t *, unsigned char *, int);

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  /* _SMBSRV_SMB_DOOR_H */