/*
 * 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 2018 Nexenta Systems, Inc. All rights reserved.
 * Copyright (c) 2017 by Delphix. All rights reserved.
 */

#ifndef _SMBSRV_STRING_H
#define _SMBSRV_STRING_H

#include <sys/types.h>

#ifdef __cplusplus
extern "C" {
#endif

#define _smb_between(l, c, u) ((l) <= (c) && (c) <= (u))

#define smb_isalpha(c)  (smb_islower(c) || smb_isupper(c))
#define smb_isdigit(c)  _smb_between('0', (c), '9')
#define smb_isalnum(c)  (smb_isalpha(c) || smb_isdigit(c))
#define smb_isxdigit(c) (smb_isdigit(c) ||                      \
    _smb_between('a', (c), 'f') ||                              \
    _smb_between('A', (c), 'F'))
#define smb_isblank(c)  ((c) == ' ' || (c) == '\t')
#define smb_isspace(c)  ((c) == ' ' ||          \
            (c) == '\t' ||                      \
            (c) == '\n' ||                      \
            (c) == '\r' ||                      \
            (c) == '\f')
#define smb_isascii(c)  (!((c) &~ 0x7F))

/* These macros only apply to ASCII */
#define smb_isalpha_ascii(c)    \
        (_smb_between('a', (c), 'z') || _smb_between('A', (c), 'Z'))
#define smb_isalnum_ascii(c)    (smb_isalpha_ascii(c) || smb_isdigit(c))

#define smb_isprint(c)  _smb_between('!', (c), '~')
#define smb_iscntrl(c)  ((((c) >= 0) && ((c) <= 0x1f)) || ((c) == 0x7f))
#define smb_ispunct(c)  (smb_isprint(c) && !smb_isxdigit(c) && !smb_isspace(c))

/*
 * These id's should correspond to oemcpg_table smb_oem.c.
 */
typedef enum codepage_id {
        OEM_CPG_850 = 0,
        OEM_CPG_950,
        OEM_CPG_1252,
        OEM_CPG_949,
        OEM_CPG_936,
        OEM_CPG_932,
        OEM_CPG_852,
        OEM_CPG_1250,
        OEM_CPG_1253,
        OEM_CPG_737,
        OEM_CPG_1254,
        OEM_CPG_857,
        OEM_CPG_1251,
        OEM_CPG_866,
        OEM_CPG_1255,
        OEM_CPG_862,
        OEM_CPG_1256,
        OEM_CPG_720
} codepage_id_t;

/*
 * Maximum number of bytes per multi-byte character.
 */
#define MTS_MB_CUR_MAX          4
#define MTS_MB_CHAR_MAX         MTS_MB_CUR_MAX

typedef uint16_t smb_wchar_t;

/*
 * Labels to define whether a code page table entry is an uppercase
 * character, a lowercase character or neither. One of these values
 * should appear in the ctype field of the code page tables.
 */
#define CODEPAGE_ISNONE         0x00
#define CODEPAGE_ISUPPER        0x01
#define CODEPAGE_ISLOWER        0x02

/*
 * The structure of a code page entry. Each code page table will
 * consist of an array of 256 codepage entries.
 *
 * ctype indicates case of the value.
 * upper indicates the uppercase equivalent value.
 * lower indicates the lowercase equivalent value.
 */
typedef struct smb_codepage {
        unsigned char ctype;
        smb_wchar_t upper;
        smb_wchar_t lower;
} smb_codepage_t;

void smb_codepage_init(void);
void smb_codepage_fini(void);

int smb_isupper(int);
int smb_islower(int);
uint32_t smb_toupper(uint32_t);
uint32_t smb_tolower(uint32_t);
char *smb_strupr(char *);
char *smb_strlwr(char *);
int smb_isstrupr(const char *);
int smb_isstrlwr(const char *);
int smb_strcasecmp(const char *, const char *, size_t);

boolean_t smb_match(const char *, const char *, boolean_t);

size_t smb_mbstowcs(smb_wchar_t *, const char *, size_t);
size_t smb_wcstombs(char *, const smb_wchar_t *, size_t);
int smb_mbtowc(uint32_t *, const char *, size_t);
int smb_wctomb(char *, uint32_t);

size_t smb_wcequiv_strlen(const char *);
size_t smb_sbequiv_strlen(const char *);

int smb_oemtombs(char *, const uint8_t *, int);
int smb_mbstooem(uint8_t *, const char *, int);

size_t ucstooem(char *, const smb_wchar_t *, size_t, uint32_t);
size_t oemtoucs(smb_wchar_t *, const char *, size_t, uint32_t);

char *strsubst(char *, char, char);
char *strsep(char **, const char *);
char *strcanon(char *, const char *);

typedef struct smb_unc {
        char             *unc_server;
        char             *unc_share;
        char             *unc_path;
        char             *unc_buf;
} smb_unc_t;

int smb_unc_init(const char *, smb_unc_t *);
void smb_unc_free(smb_unc_t *);

#ifdef __cplusplus
}
#endif

#endif  /* _SMBSRV_STRING_H */