/* 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 defines the charset types used in samba */ typedef enum {CH_UTF16LE=0, CH_UTF16=0, CH_UNIX=1, CH_DISPLAY=2, CH_DOS=3, CH_UTF8=4, CH_UTF16BE=5} charset_t; #define NUM_CHARSETS 6 /* * 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); \ NTSTATUS charset_ ## CHARSETNAME ## _init(void) \ { \ return smb_register_charset(& CHARSETNAME ## _functions); \ } \