2 Unix SMB/CIFS implementation.
4 Copyright (C) Andrew Tridgell 2001
5 Copyright (C) Jelmer Vernooij 2002
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
21 /* This is a public header file that is installed as part of Samba.
22 * If you remove any functions or change their signature, update
23 * the so version number. */
30 /* this defines the charset types used in samba */
31 typedef enum {CH_UTF16LE
=0, CH_UTF16
=0, CH_UNIX
, CH_DISPLAY
, CH_DOS
, CH_UTF8
, CH_UTF16BE
, CH_UTF16MUNGED
} charset_t
;
33 #define NUM_CHARSETS 7
36 * SMB UCS2 (16-bit unicode) internal type.
37 * smb_ucs2_t is *always* in little endian format.
40 typedef uint16_t smb_ucs2_t
;
42 #ifdef WORDS_BIGENDIAN
48 /* turn a 7 bit character into a ucs2 character */
49 #define UCS2_CHAR(c) ((c) << UCS2_SHIFT)
51 /* return an ascii version of a ucs2 character */
52 #define UCS2_TO_CHAR(c) (((c) >> UCS2_SHIFT) & 0xff)
54 /* Copy into a smb_ucs2_t from a possibly unaligned buffer. Return the copied smb_ucs2_t */
55 #define COPY_UCS2_CHAR(dest,src) (((unsigned char *)(dest))[0] = ((unsigned char *)(src))[0],\
56 ((unsigned char *)(dest))[1] = ((unsigned char *)(src))[1], (dest))
61 * for each charset we have a function that pulls from that charset to
62 * a ucs2 buffer, and a function that pushes to a ucs2 buffer
65 struct charset_functions
{
67 size_t (*pull
)(void *, const char **inbuf
, size_t *inbytesleft
,
68 char **outbuf
, size_t *outbytesleft
);
69 size_t (*push
)(void *, const char **inbuf
, size_t *inbytesleft
,
70 char **outbuf
, size_t *outbytesleft
);
71 struct charset_functions
*prev
, *next
;
74 /* this type is used for manipulating unicode codepoints */
75 typedef uint32_t codepoint_t
;
77 #define INVALID_CODEPOINT ((codepoint_t)-1)
80 * This is auxiliary struct used by source/script/gen-8-bit-gap.sh script
81 * during generation of an encoding table for charset module
84 struct charset_gap_table
{
91 /* generic iconv conversion structure */
92 typedef struct smb_iconv_s
{
93 size_t (*direct
)(void *cd
, const char **inbuf
, size_t *inbytesleft
,
94 char **outbuf
, size_t *outbytesleft
);
95 size_t (*pull
)(void *cd
, const char **inbuf
, size_t *inbytesleft
,
96 char **outbuf
, size_t *outbytesleft
);
97 size_t (*push
)(void *cd
, const char **inbuf
, size_t *inbytesleft
,
98 char **outbuf
, size_t *outbytesleft
);
99 void *cd_direct
, *cd_pull
, *cd_push
;
100 char *from_name
, *to_name
;
103 /* string manipulation flags */
104 #define STR_TERMINATE 1
107 #define STR_UNICODE 8
108 #define STR_NOALIGN 16
109 #define STR_NO_RANGE_CHECK 32
110 #define STR_LEN8BIT 64
111 #define STR_TERMINATE_ASCII 128 /* only terminate if ascii */
112 #define STR_LEN_NOTERM 256 /* the length field is the unterminated length */
114 struct loadparm_context
;
115 struct smb_iconv_convenience
;
117 /* replace some string functions with multi-byte
119 #define strlower(s) strlower_m(s)
120 #define strupper(s) strupper_m(s)
122 char *strchr_m(const char *s
, char c
);
123 size_t strlen_m_ext(const char *s
, charset_t src_charset
, charset_t dst_charset
);
124 size_t strlen_m_term(const char *s
);
125 size_t strlen_m_term_null(const char *s
);
126 size_t strlen_m(const char *s
);
127 char *alpha_strcpy(char *dest
, const char *src
, const char *other_safe_chars
, size_t maxlength
);
128 void string_replace_m(char *s
, char oldc
, char newc
);
129 bool strcsequal_m(const char *s1
,const char *s2
);
130 bool strequal_m(const char *s1
, const char *s2
);
131 int strncasecmp_m(const char *s1
, const char *s2
, size_t n
);
132 bool next_token(const char **ptr
,char *buff
, const char *sep
, size_t bufsize
);
133 int strcasecmp_m(const char *s1
, const char *s2
);
134 size_t count_chars_m(const char *s
, char c
);
135 void strupper_m(char *s
);
136 void strlower_m(char *s
);
137 char *strupper_talloc(TALLOC_CTX
*ctx
, const char *src
);
138 char *talloc_strdup_upper(TALLOC_CTX
*ctx
, const char *src
);
139 char *strupper_talloc_n(TALLOC_CTX
*ctx
, const char *src
, size_t n
);
140 char *strlower_talloc(TALLOC_CTX
*ctx
, const char *src
);
141 bool strhasupper(const char *string
);
142 bool strhaslower(const char *string
);
143 char *strrchr_m(const char *s
, char c
);
144 char *strchr_m(const char *s
, char c
);
146 bool push_ascii_talloc(TALLOC_CTX
*ctx
, char **dest
, const char *src
, size_t *converted_size
);
147 bool push_ucs2_talloc(TALLOC_CTX
*ctx
, smb_ucs2_t
**dest
, const char *src
, size_t *converted_size
);
148 bool push_utf8_talloc(TALLOC_CTX
*ctx
, char **dest
, const char *src
, size_t *converted_size
);
149 bool pull_ascii_talloc(TALLOC_CTX
*ctx
, char **dest
, const char *src
, size_t *converted_size
);
150 bool pull_ucs2_talloc(TALLOC_CTX
*ctx
, char **dest
, const smb_ucs2_t
*src
, size_t *converted_size
);
151 bool pull_utf8_talloc(TALLOC_CTX
*ctx
, char **dest
, const char *src
, size_t *converted_size
);
152 ssize_t
push_string(void *dest
, const char *src
, size_t dest_len
, int flags
);
153 ssize_t
pull_string(char *dest
, const void *src
, size_t dest_len
, size_t src_len
, int flags
);
155 bool convert_string_talloc(TALLOC_CTX
*ctx
,
156 charset_t from
, charset_t to
,
157 void const *src
, size_t srclen
,
158 void *dest
, size_t *converted_size
,
159 bool allow_badcharcnv
);
161 size_t convert_string(charset_t from
, charset_t to
,
162 void const *src
, size_t srclen
,
163 void *dest
, size_t destlen
, bool allow_badcharcnv
);
165 ssize_t
iconv_talloc(TALLOC_CTX
*mem_ctx
,
167 void const *src
, size_t srclen
,
170 extern struct smb_iconv_convenience
*global_iconv_convenience
;
172 codepoint_t
next_codepoint_ext(const char *str
, charset_t src_charset
,
174 codepoint_t
next_codepoint(const char *str
, size_t *size
);
175 ssize_t
push_codepoint(char *str
, codepoint_t c
);
178 codepoint_t
next_codepoint_convenience_ext(struct smb_iconv_convenience
*ic
,
179 const char *str
, charset_t src_charset
,
181 codepoint_t
next_codepoint_convenience(struct smb_iconv_convenience
*ic
,
182 const char *str
, size_t *size
);
183 ssize_t
push_codepoint_convenience(struct smb_iconv_convenience
*ic
,
184 char *str
, codepoint_t c
);
185 codepoint_t
toupper_m(codepoint_t val
);
186 codepoint_t
tolower_m(codepoint_t val
);
187 int codepoint_cmpi(codepoint_t c1
, codepoint_t c2
);
189 /* Iconv convenience functions */
190 struct smb_iconv_convenience
*smb_iconv_convenience_reinit(TALLOC_CTX
*mem_ctx
,
191 const char *dos_charset
,
192 const char *unix_charset
,
194 struct smb_iconv_convenience
*old_ic
);
196 bool convert_string_convenience(struct smb_iconv_convenience
*ic
,
197 charset_t from
, charset_t to
,
198 void const *src
, size_t srclen
,
199 void *dest
, size_t destlen
, size_t *converted_size
,
200 bool allow_badcharcnv
);
201 bool convert_string_talloc_convenience(TALLOC_CTX
*ctx
,
202 struct smb_iconv_convenience
*ic
,
203 charset_t from
, charset_t to
,
204 void const *src
, size_t srclen
,
205 void *dest
, size_t *converted_size
, bool allow_badcharcnv
);
207 smb_iconv_t
smb_iconv_open(const char *tocode
, const char *fromcode
);
208 int smb_iconv_close(smb_iconv_t cd
);
209 size_t smb_iconv(smb_iconv_t cd
,
210 const char **inbuf
, size_t *inbytesleft
,
211 char **outbuf
, size_t *outbytesleft
);
212 smb_iconv_t
smb_iconv_open_ex(TALLOC_CTX
*mem_ctx
, const char *tocode
,
213 const char *fromcode
, bool native_iconv
);
215 void load_case_tables(void);
216 bool charset_register_backend(const void *_funcs
);
219 * Define stub for charset module which implements 8-bit encoding with gaps.
220 * Encoding tables for such module should be produced from glibc's CHARMAPs
221 * using script source/script/gen-8bit-gap.sh
222 * CHARSETNAME is CAPITALIZED charset name
225 #define SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CHARSETNAME) \
226 static size_t CHARSETNAME ## _push(void *cd, const char **inbuf, size_t *inbytesleft, \
227 char **outbuf, size_t *outbytesleft) \
229 while (*inbytesleft >= 2 && *outbytesleft >= 1) { \
233 uint16 ch = SVAL(*inbuf,0); \
235 for (i=0; from_idx[i].start != 0xffff; i++) { \
236 if ((from_idx[i].start <= ch) && (from_idx[i].end >= ch)) { \
237 ((unsigned char*)(*outbuf))[0] = from_ucs2[from_idx[i].idx+ch]; \
238 (*inbytesleft) -= 2; \
239 (*outbytesleft) -= 1; \
253 if (*inbytesleft == 1) { \
258 if (*inbytesleft > 1) { \
266 static size_t CHARSETNAME ## _pull(void *cd, const char **inbuf, size_t *inbytesleft, \
267 char **outbuf, size_t *outbytesleft) \
269 while (*inbytesleft >= 1 && *outbytesleft >= 2) { \
270 SSVAL(*outbuf, 0, to_ucs2[((unsigned char*)(*inbuf))[0]]); \
271 (*inbytesleft) -= 1; \
272 (*outbytesleft) -= 2; \
277 if (*inbytesleft > 0) { \
285 struct charset_functions CHARSETNAME ## _functions = \
286 {#CHARSETNAME, CHARSETNAME ## _pull, CHARSETNAME ## _push}; \
288 NTSTATUS charset_ ## CHARSETNAME ## _init(void); \
289 NTSTATUS charset_ ## CHARSETNAME ## _init(void) \
291 return smb_register_charset(& CHARSETNAME ## _functions); \
295 #endif /* __CHARSET_H__ */