mirror of
https://github.com/samba-team/samba.git
synced 2024-12-27 03:21:53 +03:00
651daa4b42
try to cope with a wider range of UTF-16 characters when we are using
an external libiconv library.
Jeremy.
(This used to be commit 5d04cd6804)
127 lines
3.9 KiB
C
127 lines
3.9 KiB
C
/*
|
|
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 2 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, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
/* this defines the charset types used in samba */
|
|
typedef enum {CH_UCS2=0, CH_UNIX=1, CH_DISPLAY=2, CH_DOS=3, CH_UTF8=4} charset_t;
|
|
|
|
#define NUM_CHARSETS 5
|
|
|
|
/*
|
|
* for each charset we have a function that pushes from that charset to a ucs2
|
|
* buffer, and a function that pulls from ucs2 buffer to that charset.
|
|
* */
|
|
|
|
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 is auxiliary struct used by source/script/gen-8-bit-gap.sh script
|
|
* during generation of an encoding table for charset module
|
|
* */
|
|
|
|
struct charset_gap_table {
|
|
uint16 start;
|
|
uint16 end;
|
|
int32 idx;
|
|
};
|
|
|
|
/*
|
|
* Define stub for charset module which implements 8-bit encoding with gaps.
|
|
* Encoding tables for such module should be produced from glibc's CHARMAPs
|
|
* using script source/script/gen-8bit-gap.sh
|
|
* CHARSETNAME is CAPITALIZED charset name
|
|
*
|
|
* */
|
|
#define SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CHARSETNAME) \
|
|
static size_t CHARSETNAME ## _push(void *cd, const char **inbuf, size_t *inbytesleft, \
|
|
char **outbuf, size_t *outbytesleft) \
|
|
{ \
|
|
while (*inbytesleft >= 2 && *outbytesleft >= 1) { \
|
|
int i; \
|
|
int done = 0; \
|
|
\
|
|
uint16 ch = SVAL(*inbuf,0); \
|
|
\
|
|
for (i=0; from_idx[i].start != 0xffff; i++) { \
|
|
if ((from_idx[i].start <= ch) && (from_idx[i].end >= ch)) { \
|
|
((unsigned char*)(*outbuf))[0] = from_ucs2[from_idx[i].idx+ch]; \
|
|
(*inbytesleft) -= 2; \
|
|
(*outbytesleft) -= 1; \
|
|
(*inbuf) += 2; \
|
|
(*outbuf) += 1; \
|
|
done = 1; \
|
|
break; \
|
|
} \
|
|
} \
|
|
if (!done) { \
|
|
errno = EINVAL; \
|
|
return -1; \
|
|
} \
|
|
\
|
|
} \
|
|
\
|
|
if (*inbytesleft == 1) { \
|
|
errno = EINVAL; \
|
|
return -1; \
|
|
} \
|
|
\
|
|
if (*inbytesleft > 1) { \
|
|
errno = E2BIG; \
|
|
return -1; \
|
|
} \
|
|
\
|
|
return 0; \
|
|
} \
|
|
\
|
|
static size_t CHARSETNAME ## _pull(void *cd, const char **inbuf, size_t *inbytesleft, \
|
|
char **outbuf, size_t *outbytesleft) \
|
|
{ \
|
|
while (*inbytesleft >= 1 && *outbytesleft >= 2) { \
|
|
*(uint16*)(*outbuf) = to_ucs2[((unsigned char*)(*inbuf))[0]]; \
|
|
(*inbytesleft) -= 1; \
|
|
(*outbytesleft) -= 2; \
|
|
(*inbuf) += 1; \
|
|
(*outbuf) += 2; \
|
|
} \
|
|
\
|
|
if (*inbytesleft > 0) { \
|
|
errno = E2BIG; \
|
|
return -1; \
|
|
} \
|
|
\
|
|
return 0; \
|
|
} \
|
|
\
|
|
struct charset_functions CHARSETNAME ## _functions = \
|
|
{#CHARSETNAME, CHARSETNAME ## _pull, CHARSETNAME ## _push}; \
|
|
\
|
|
NTSTATUS charset_ ## CHARSETNAME ## _init(void) \
|
|
{ \
|
|
return smb_register_charset(& CHARSETNAME ## _functions); \
|
|
} \
|
|
|