| 1 | /*
|
|---|
| 2 | Unix SMB/CIFS implementation.
|
|---|
| 3 | charset defines
|
|---|
| 4 | Copyright (C) Andrew Tridgell 2001
|
|---|
| 5 | Copyright (C) Jelmer Vernooij 2002
|
|---|
| 6 |
|
|---|
| 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.
|
|---|
| 11 |
|
|---|
| 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.
|
|---|
| 16 |
|
|---|
| 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/>.
|
|---|
| 19 | */
|
|---|
| 20 |
|
|---|
| 21 | /* this defines the charset types used in samba */
|
|---|
| 22 | 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;
|
|---|
| 23 |
|
|---|
| 24 | #define NUM_CHARSETS 6
|
|---|
| 25 |
|
|---|
| 26 | /*
|
|---|
| 27 | * for each charset we have a function that pushes from that charset to a ucs2
|
|---|
| 28 | * buffer, and a function that pulls from ucs2 buffer to that charset.
|
|---|
| 29 | * */
|
|---|
| 30 |
|
|---|
| 31 | struct charset_functions {
|
|---|
| 32 | const char *name;
|
|---|
| 33 | size_t (*pull)(void *, const char **inbuf, size_t *inbytesleft,
|
|---|
| 34 | char **outbuf, size_t *outbytesleft);
|
|---|
| 35 | size_t (*push)(void *, const char **inbuf, size_t *inbytesleft,
|
|---|
| 36 | char **outbuf, size_t *outbytesleft);
|
|---|
| 37 | struct charset_functions *prev, *next;
|
|---|
| 38 | };
|
|---|
| 39 |
|
|---|
| 40 | /*
|
|---|
| 41 | * This is auxiliary struct used by source/script/gen-8-bit-gap.sh script
|
|---|
| 42 | * during generation of an encoding table for charset module
|
|---|
| 43 | * */
|
|---|
| 44 |
|
|---|
| 45 | struct charset_gap_table {
|
|---|
| 46 | uint16 start;
|
|---|
| 47 | uint16 end;
|
|---|
| 48 | int32 idx;
|
|---|
| 49 | };
|
|---|
| 50 |
|
|---|
| 51 | /*
|
|---|
| 52 | * Define stub for charset module which implements 8-bit encoding with gaps.
|
|---|
| 53 | * Encoding tables for such module should be produced from glibc's CHARMAPs
|
|---|
| 54 | * using script source/script/gen-8bit-gap.sh
|
|---|
| 55 | * CHARSETNAME is CAPITALIZED charset name
|
|---|
| 56 | *
|
|---|
| 57 | * */
|
|---|
| 58 | #define SMB_GENERATE_CHARSET_MODULE_8_BIT_GAP(CHARSETNAME) \
|
|---|
| 59 | static size_t CHARSETNAME ## _push(void *cd, const char **inbuf, size_t *inbytesleft, \
|
|---|
| 60 | char **outbuf, size_t *outbytesleft) \
|
|---|
| 61 | { \
|
|---|
| 62 | while (*inbytesleft >= 2 && *outbytesleft >= 1) { \
|
|---|
| 63 | int i; \
|
|---|
| 64 | int done = 0; \
|
|---|
| 65 | \
|
|---|
| 66 | uint16 ch = SVAL(*inbuf,0); \
|
|---|
| 67 | \
|
|---|
| 68 | for (i=0; from_idx[i].start != 0xffff; i++) { \
|
|---|
| 69 | if ((from_idx[i].start <= ch) && (from_idx[i].end >= ch)) { \
|
|---|
| 70 | ((unsigned char*)(*outbuf))[0] = from_ucs2[from_idx[i].idx+ch]; \
|
|---|
| 71 | (*inbytesleft) -= 2; \
|
|---|
| 72 | (*outbytesleft) -= 1; \
|
|---|
| 73 | (*inbuf) += 2; \
|
|---|
| 74 | (*outbuf) += 1; \
|
|---|
| 75 | done = 1; \
|
|---|
| 76 | break; \
|
|---|
| 77 | } \
|
|---|
| 78 | } \
|
|---|
| 79 | if (!done) { \
|
|---|
| 80 | errno = EINVAL; \
|
|---|
| 81 | return -1; \
|
|---|
| 82 | } \
|
|---|
| 83 | \
|
|---|
| 84 | } \
|
|---|
| 85 | \
|
|---|
| 86 | if (*inbytesleft == 1) { \
|
|---|
| 87 | errno = EINVAL; \
|
|---|
| 88 | return -1; \
|
|---|
| 89 | } \
|
|---|
| 90 | \
|
|---|
| 91 | if (*inbytesleft > 1) { \
|
|---|
| 92 | errno = E2BIG; \
|
|---|
| 93 | return -1; \
|
|---|
| 94 | } \
|
|---|
| 95 | \
|
|---|
| 96 | return 0; \
|
|---|
| 97 | } \
|
|---|
| 98 | \
|
|---|
| 99 | static size_t CHARSETNAME ## _pull(void *cd, const char **inbuf, size_t *inbytesleft, \
|
|---|
| 100 | char **outbuf, size_t *outbytesleft) \
|
|---|
| 101 | { \
|
|---|
| 102 | while (*inbytesleft >= 1 && *outbytesleft >= 2) { \
|
|---|
| 103 | *(uint16*)(*outbuf) = to_ucs2[((unsigned char*)(*inbuf))[0]]; \
|
|---|
| 104 | (*inbytesleft) -= 1; \
|
|---|
| 105 | (*outbytesleft) -= 2; \
|
|---|
| 106 | (*inbuf) += 1; \
|
|---|
| 107 | (*outbuf) += 2; \
|
|---|
| 108 | } \
|
|---|
| 109 | \
|
|---|
| 110 | if (*inbytesleft > 0) { \
|
|---|
| 111 | errno = E2BIG; \
|
|---|
| 112 | return -1; \
|
|---|
| 113 | } \
|
|---|
| 114 | \
|
|---|
| 115 | return 0; \
|
|---|
| 116 | } \
|
|---|
| 117 | \
|
|---|
| 118 | struct charset_functions CHARSETNAME ## _functions = \
|
|---|
| 119 | {#CHARSETNAME, CHARSETNAME ## _pull, CHARSETNAME ## _push}; \
|
|---|
| 120 | \
|
|---|
| 121 | NTSTATUS charset_ ## CHARSETNAME ## _init(void); \
|
|---|
| 122 | NTSTATUS charset_ ## CHARSETNAME ## _init(void) \
|
|---|
| 123 | { \
|
|---|
| 124 | return smb_register_charset(& CHARSETNAME ## _functions); \
|
|---|
| 125 | } \
|
|---|
| 126 |
|
|---|
