summaryrefslogtreecommitdiff
path: root/source4/lib/charset/charset.h
blob: baa7df532b6d78fa1c5db0aa53138f13ba5edf96 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
/* 
   Unix SMB/CIFS implementation.
   charset defines
   Copyright (C) Andrew Tridgell 2001
   Copyright (C) Jelmer Vernooij 2002
   
   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 3 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, see <http://www.gnu.org/licenses/>.
*/

/* This is a public header file that is installed as part of Samba. 
 * If you remove any functions or change their signature, update 
 * the so version number. */

#ifndef __CHARSET_H__
#define __CHARSET_H__

#include <talloc.h>

/* this defines the charset types used in samba */
typedef enum {CH_UTF16=0, CH_UNIX, CH_DOS, CH_UTF8, CH_UTF16BE} charset_t;

#define NUM_CHARSETS 5

/*
 *   for each charset we have a function that pulls from that charset to
 *     a ucs2 buffer, and a function that pushes to a ucs2 buffer
 *     */

struct charset_functions {
	const char *name;
	size_t (*pull)(void *, const char **inbuf, size_t *inbytesleft,
				   char **outbuf, size_t *outbytesleft);
	size_t (*push)(void *, const char **inbuf, size_t *inbytesleft,
				   char **outbuf, size_t *outbytesleft);
	struct charset_functions *prev, *next;
};

/* this type is used for manipulating unicode codepoints */
typedef uint32_t codepoint_t;

#define INVALID_CODEPOINT ((codepoint_t)-1)


/* generic iconv conversion structure */
typedef struct smb_iconv_s {
	size_t (*direct)(void *cd, const char **inbuf, size_t *inbytesleft,
			 char **outbuf, size_t *outbytesleft);
	size_t (*pull)(void *cd, const char **inbuf, size_t *inbytesleft,
		       char **outbuf, size_t *outbytesleft);
	size_t (*push)(void *cd, const char **inbuf, size_t *inbytesleft,
		       char **outbuf, size_t *outbytesleft);
	void *cd_direct, *cd_pull, *cd_push;
} *smb_iconv_t;

/* string manipulation flags */
#define STR_TERMINATE 1
#define STR_UPPER 2
#define STR_ASCII 4
#define STR_UNICODE 8
#define STR_NOALIGN 16
#define STR_NO_RANGE_CHECK 32
#define STR_LEN8BIT 64
#define STR_TERMINATE_ASCII 128 /* only terminate if ascii */
#define STR_LEN_NOTERM 256 /* the length field is the unterminated length */

struct loadparm_context;
struct smb_iconv_convenience;
extern struct smb_iconv_convenience *global_smb_iconv_convenience;

/* replace some string functions with multi-byte
   versions */
#define strlower(s) strlower_m(s)
#define strupper(s) strupper_m(s)

char *strchr_m(const char *s, char c);
size_t strlen_m_term(const char *s);
size_t strlen_m(const char *s);
char *alpha_strcpy(char *dest, const char *src, const char *other_safe_chars, size_t maxlength);
void string_replace_w(char *s, char oldc, char newc);
bool strcsequal_w(const char *s1,const char *s2);
bool strequal_w(const char *s1, const char *s2);
int strncasecmp_m(const char *s1, const char *s2, size_t n);
bool next_token(const char **ptr,char *buff, const char *sep, size_t bufsize);
int strcasecmp_m(const char *s1, const char *s2);
size_t count_chars_w(const char *s, char c);
void strupper_m(char *s);
void strlower_m(char *s);
char *strupper_talloc(TALLOC_CTX *ctx, const char *src);
char *strlower_talloc(TALLOC_CTX *ctx, const char *src);
bool strhasupper(const char *string);
bool strhaslower(const char *string);
char *strrchr_m(const char *s, char c);
char *strchr_m(const char *s, char c);

/* codepoints */
codepoint_t next_codepoint(struct smb_iconv_convenience *ic, 
			    const char *str, size_t *size);
ssize_t push_codepoint(struct smb_iconv_convenience *ic, 
				char *str, codepoint_t c);
codepoint_t toupper_w(codepoint_t val);
codepoint_t tolower_w(codepoint_t val);
int codepoint_cmpi(codepoint_t c1, codepoint_t c2);
ssize_t push_string(struct smb_iconv_convenience *ic, void *dest, const char *src, size_t dest_len, int flags);
ssize_t pull_string(struct smb_iconv_convenience *ic,
		    char *dest, const void *src, size_t dest_len, size_t src_len, int flags);
ssize_t convert_string(struct smb_iconv_convenience *ic,
				charset_t from, charset_t to,
				void const *src, size_t srclen, 
				void *dest, size_t destlen);
ssize_t convert_string_talloc_descriptor(TALLOC_CTX *ctx, smb_iconv_t descriptor, void const *src, size_t srclen, void **dest);
ssize_t convert_string_talloc(TALLOC_CTX *ctx, 
				       struct smb_iconv_convenience *ic, 
				       charset_t from, charset_t to, 
				       void const *src, size_t srclen, 
				       void **dest);
ssize_t push_ascii_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, char **dest, const char *src);
ssize_t push_ucs2_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, void **dest, const char *src);
ssize_t push_utf8_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, char **dest, const char *src);
ssize_t pull_ascii_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, char **dest, const char *src);
ssize_t pull_ucs2_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, char **dest, const void *src);
ssize_t pull_utf8_talloc(TALLOC_CTX *ctx, struct smb_iconv_convenience *ic, char **dest, const char *src);

/* iconv */
smb_iconv_t smb_iconv_open(const char *tocode, const char *fromcode);
int smb_iconv_close(smb_iconv_t cd);
size_t smb_iconv(smb_iconv_t cd, 
		 const char **inbuf, size_t *inbytesleft,
		 char **outbuf, size_t *outbytesleft);
smb_iconv_t smb_iconv_open_ex(TALLOC_CTX *mem_ctx, const char *tocode, 
			      const char *fromcode, bool native_iconv);

/* iconv convenience */
struct smb_iconv_convenience *smb_iconv_convenience_init(TALLOC_CTX *mem_ctx,
							 const char *dos_charset,
							 const char *unix_charset,
							 bool native_iconv);
#endif /* __CHARSET_H__ */