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Diffstat (limited to 'source/include/charset.h')
| -rw-r--r-- | source/include/charset.h | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/source/include/charset.h b/source/include/charset.h new file mode 100644 index 00000000000..7a9b12ef55d --- /dev/null +++ b/source/include/charset.h @@ -0,0 +1,127 @@ +/* + 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 *, char **inbuf, size_t *inbytesleft, + char **outbuf, size_t *outbytesleft); + size_t (*push)(void *, 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, 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, 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); \ +} \ + + |