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/*
Unix SMB/Netbios implementation.
Version 1.9.
Character set handling
Copyright (C) Andrew Tridgell 1992-1997
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.
*/
#define CHARSET_C
#include "includes.h"
extern int DEBUGLEVEL;
/*
* Codepage definitions.
*/
/* lower->upper mapping for IBM Code Page 850 - MS-DOS Latin 1 */
unsigned char cp_850[][4] = {
/* dec col/row oct hex description */
/* 133 08/05 205 85 a grave */
/* 183 11/07 267 B7 A grave */ {0x85,0xB7,1,1},
/* 160 10/00 240 A0 a acute */
/* 181 11/05 265 B5 A acute */ {0xA0,0xB5,1,1},
/* 131 08/03 203 83 a circumflex */
/* 182 11/06 266 B6 A circumflex */ {0x83,0xB6,1,1},
/* 198 12/06 306 C6 a tilde */
/* 199 12/07 307 C7 A tilde */ {0xC6,0xC7,1,1},
/* 132 08/04 204 84 a diaeresis */
/* 142 08/14 216 8E A diaeresis */ {0x84,0x8E,1,1},
/* 134 08/06 206 86 a ring */
/* 143 08/15 217 8F A ring */ {0x86,0x8F,1,1},
/* 145 09/01 221 91 ae diphthong */
/* 146 09/02 222 92 AE diphthong */ {0x91,0x92,1,1},
/* 135 08/07 207 87 c cedilla */
/* 128 08/00 200 80 C cedilla */ {0x87,0x80,1,1},
/* 138 08/10 212 8A e grave */
/* 212 13/04 324 D4 E grave */ {0x8A,0xD4,1,1},
/* 130 08/02 202 82 e acute */
/* 144 09/00 220 90 E acute */ {0x82,0x90,1,1},
/* 136 08/08 210 88 e circumflex */
/* 210 13/02 322 D2 E circumflex */ {0x88,0xD2,1,1},
/* 137 08/09 211 89 e diaeresis */
/* 211 13/03 323 D3 E diaeresis */ {0x89,0xD3,1,1},
/* 141 08/13 215 8D i grave */
/* 222 13/14 336 DE I grave */ {0x8D,0xDE,1,1},
/* 161 10/01 241 A1 i acute */
/* 214 13/06 326 D6 I acute */ {0xA1,0xD6,1,1},
/* 140 08/12 214 8C i circumflex */
/* 215 13/07 327 D7 I circumflex */ {0x8C,0xD7,1,1},
/* 139 08/11 213 8B i diaeresis */
/* 216 13/08 330 D8 I diaeresis */ {0x8B,0xD8,1,1},
/* 208 13/00 320 D0 Icelandic eth */
/* 209 13/01 321 D1 Icelandic Eth */ {0xD0,0xD1,1,1},
/* 164 10/04 244 A4 n tilde */
/* 165 10/05 245 A5 N tilde */ {0xA4,0xA5,1,1},
/* 149 09/05 225 95 o grave */
/* 227 14/03 343 E3 O grave */ {0x95,0xE3,1,1},
/* 162 10/02 242 A2 o acute */
/* 224 14/00 340 E0 O acute */ {0xA2,0xE0,1,1},
/* 147 09/03 223 93 o circumflex */
/* 226 14/02 342 E2 O circumflex */ {0x93,0xE2,1,1},
/* 228 14/04 344 E4 o tilde */
/* 229 14/05 345 E5 O tilde */ {0xE4,0xE5,1,1},
/* 148 09/04 224 94 o diaeresis */
/* 153 09/09 231 99 O diaeresis */ {0x94,0x99,1,1},
/* 155 09/11 233 9B o slash */
/* 157 09/13 235 9D O slash */ {0x9B,0x9D,1,1},
/* 151 09/07 227 97 u grave */
/* 235 14/11 353 EB U grave */ {0x97,0xEB,1,1},
/* 163 10/03 243 A3 u acute */
/* 233 14/09 351 E9 U acute */ {0xA3,0xE9,1,1},
/* 150 09/06 226 96 u circumflex */
/* 234 14/10 352 EA U circumflex */ {0x96,0xEA,1,1},
/* 129 08/01 201 81 u diaeresis */
/* 154 09/10 232 9A U diaeresis */ {0x81,0x9A,1,1},
/* 236 14/12 354 EC y acute */
/* 237 14/13 355 ED Y acute */ {0xEC,0xED,1,1},
/* 231 14/07 347 E7 Icelandic thorn */
/* 232 14/08 350 E8 Icelandic Thorn */ {0xE7,0xE8,1,1},
{0x9C,0,0,0}, /* Pound */
{0,0,0,0}
};
/* lower->upper mapping for IBM Code Page 437 - MS-DOS Latin US */
unsigned char cp_437[][4] = {
/* 135 08/07 207 87 c cedilla */
/* 128 08/00 200 80 C cedilla */ {0x87,0x80,1,1},
/* 129 08/01 201 81 u diaeresis */
/* 154 09/10 232 9A U diaeresis */ {0x81,0x9A,1,1},
/* 130 08/02 202 82 e acute */
/* 144 09/00 220 90 E acute */ {0x82,0x90,1,1},
/* 131 08/03 203 83 a circumflex */ {0x83,0x41,1,0},
/* 132 08/04 204 84 a diaeresis */
/* 142 08/14 216 8E A diaeresis */ {0x84,0x8E,1,1},
/* 133 08/05 205 85 a grave */ {0x85,0x41,1,0},
/* 134 08/06 206 86 a ring */ {0x86,0x8F,1,1},
/* 136 08/08 210 88 e circumflex */ {0x88,0x45,1,0},
/* 137 08/09 211 89 e diaeresis */ {0x89,0x45,1,0},
/* 138 08/10 212 8A e grave */ {0x8A,0x45,1,0},
/* 139 08/11 213 8B i diaeresis */ {0x8B,0x49,1,0},
/* 140 08/12 214 8C i circumflex */ {0x8C,0x49,1,0},
/* 141 08/13 215 8D i grave */ {0x8D,0x49,1,0},
/* 145 09/01 221 91 ae diphthong */
/* 146 09/02 222 92 AE diphthong */ {0x91,0x92,1,1},
/* 147 09/03 223 93 o circumflex */ {0x93,0x4F,1,0},
/* 148 09/04 224 94 o diaeresis */
/* 153 09/09 231 99 O diaeresis */ {0x94,0x99,1,1},
/* 149 09/05 225 95 o grave */ {0x95,0x4F,1,0},
/* 150 09/06 226 96 u circumflex */ {0x96,0x55,1,0},
/* 151 09/07 227 97 u grave */ {0x97,0x55,1,0},
/* 152 ??/?? 201 98 u diaeresis */
{0x9B,0,0,0}, /* Cent */
{0x9C,0,0,0}, /* Pound */
{0x9D,0,0,0}, /* Yen */
/* 160 10/00 240 A0 a acute */ {0xA0,0x41,1,0},
/* 161 10/01 241 A1 i acute */ {0xA1,0x49,1,0},
/* 162 10/02 242 A2 o acute */ {0xA2,0x4F,1,0},
/* 163 10/03 243 A3 u acute */ {0xA3,0x55,1,0},
/* 164 10/04 244 A4 n tilde */
/* 165 10/05 245 A5 N tilde */ {0xA4,0xA5,1,1},
/* Punctuation... */
{0xA8,0,0,0},
{0xAD,0,0,0},
{0xAE,0,0,0},
{0xAF,0,0,0},
/* Greek character set */
{0xE0,0,0,0},
{0xE1,0,0,0},
{0xE2,0,0,0},
{0xE3,0,0,0},
{0xE4,0,0,0},
{0xE5,0,0,0},
{0xE6,0,0,0},
{0xE7,0,0,0},
{0xE8,0,0,0},
{0xE9,0,0,0},
{0xEA,0,0,0},
{0xEB,0,0,0},
{0xEC,0,0,0},
{0xED,0,0,0},
{0xEE,0,0,0},
{0xEF,0,0,0},
{0,0,0,0}
};
char xx_dos_char_map[256];
char xx_upper_char_map[256];
char xx_lower_char_map[256];
char *dos_char_map = xx_dos_char_map;
char *upper_char_map = xx_upper_char_map;
char *lower_char_map = xx_lower_char_map;
/*
* This code has been extended to deal with ascynchronous mappings
* like MS-DOS Latin US (Code page 437) where things like :
* a acute are capitalized to 'A', but the reverse mapping
* must not hold true. This allows the filename case insensitive
* matching in do_match() to work, as the DOS/Win95/NT client
* uses 'A' as a mask to match against characters like a acute.
* This is the meaning behind the parameters that allow a
* mapping from lower to upper, but not upper to lower.
*/
static void add_dos_char(int lower, BOOL map_lower_to_upper,
int upper, BOOL map_upper_to_lower)
{
lower &= 0xff;
upper &= 0xff;
DEBUG(6,("Adding chars 0x%x 0x%x (l->u = %s) (u->l = %s)\n",lower,upper,
map_lower_to_upper ? "True" : "False",
map_upper_to_lower ? "True" : "False"));
if (lower) dos_char_map[lower] = 1;
if (upper) dos_char_map[upper] = 1;
if (lower && upper) {
if(map_upper_to_lower)
lower_char_map[upper] = (char)lower;
if(map_lower_to_upper)
upper_char_map[lower] = (char)upper;
}
}
/****************************************************************************
initialise the charset arrays
****************************************************************************/
void charset_initialise()
{
int i;
#ifdef LC_ALL
/* include <locale.h> in includes.h if available for OS */
/* we take only standard 7-bit ASCII definitions from ctype */
setlocale(LC_ALL,"C");
#endif
for (i= 0;i<=255;i++) {
dos_char_map[i] = 0;
}
for (i=0;i<=127;i++) {
if (isalnum((char)i) || strchr("._^$~!#%&-{}()@'`",(char)i))
add_dos_char(i,False,0,False);
}
for (i=0; i<=255; i++) {
char c = (char)i;
upper_char_map[i] = lower_char_map[i] = c;
if (isupper(c)) lower_char_map[i] = tolower(c);
if (islower(c)) upper_char_map[i] = toupper(c);
}
}
/****************************************************************************
initialise the client codepage.
****************************************************************************/
void codepage_initialise(int client_codepage)
{
int i;
unsigned char (*cp)[4] = NULL;
static BOOL done = False;
if(done == True)
{
DEBUG(6,
("codepage_initialise: called twice - ignoring second client code page = %d\n",
client_codepage));
return;
}
DEBUG(6,("codepage_initialise: client code page = %d\n", client_codepage));
/*
* Known client codepages - these can be added to.
*/
switch(client_codepage)
{
case 850:
cp = cp_850;
break;
case 437:
cp = cp_437;
break;
default:
/* Use default codepage - currently 850 */
DEBUG(6,("codepage_initialise: Using default client codepage %d\n",
850));
cp = cp_850;
break;
}
if(cp)
{
for(i = 0; (cp[i][0] != '\0') && (cp[i][1] != '\0'); i++)
add_dos_char(cp[i][0], (BOOL)cp[i][2], cp[i][1], (BOOL)cp[i][3]);
}
done = True;
}
/*******************************************************************
add characters depending on a string passed by the user
********************************************************************/
void add_char_string(char *s)
{
char *extra_chars = (char *)strdup(s);
char *t;
if (!extra_chars) return;
for (t=strtok(extra_chars," \t\r\n"); t; t=strtok(NULL," \t\r\n")) {
char c1=0,c2=0;
int i1=0,i2=0;
if (isdigit((unsigned char)*t) || (*t)=='-') {
sscanf(t,"%i:%i",&i1,&i2);
add_dos_char(i1,True,i2,True);
} else {
sscanf(t,"%c:%c",&c1,&c2);
add_dos_char((unsigned char)c1,True,(unsigned char)c2, True);
}
}
free(extra_chars);
}
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