/* Unix SMB/Netbios implementation. Version 1.9. Character set handling Copyright (C) Andrew Tridgell 1992-1998 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. */ #if !defined(KANJI) /* 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} }; #else /* KANJI */ /* lower->upper mapping for IBM Code Page 932 - MS-DOS Japanese SJIS */ unsigned char cp_932[][4] = { {0,0,0,0} }; #endif /* KANJI */ 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; DEBUGADD( 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; lower_char_map[lower] = (char)lower; /* Define tolower(lower) */ upper_char_map[upper] = (char)upper; /* Define toupper(upper) */ 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(void) { 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(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; /* Some systems have buggy isupper/islower for characters above 127. Best not to rely on them. */ if(i < 128) { if (isupper((int)c)) lower_char_map[i] = tolower(c); if (islower((int)c)) upper_char_map[i] = toupper(c); } } } /**************************************************************************** load the client codepage. ****************************************************************************/ typedef unsigned char (*codepage_p)[4]; static codepage_p load_client_codepage( int client_codepage ) { pstring codepage_file_name; unsigned char buf[8]; int fd = -1; SMB_OFF_T size; codepage_p cp_p = NULL; SMB_STRUCT_STAT st; DEBUG(5, ("load_client_codepage: loading codepage %d.\n", client_codepage)); if(strlen(CODEPAGEDIR) + 14 > sizeof(codepage_file_name)) { DEBUG(0,("load_client_codepage: filename too long to load\n")); return NULL; } pstrcpy(codepage_file_name, CODEPAGEDIR); pstrcat(codepage_file_name, "/"); pstrcat(codepage_file_name, "codepage."); slprintf(&codepage_file_name[strlen(codepage_file_name)], sizeof(pstring)-(strlen(codepage_file_name)+1), "%03d", client_codepage); if(sys_stat(codepage_file_name,&st)!=0) { DEBUG(0,("load_client_codepage: filename %s does not exist.\n", codepage_file_name)); return NULL; } /* Check if it is at least big enough to hold the required data. Should be 2 byte version, 2 byte codepage, 4 byte length, plus zero or more bytes of data. Note that the data cannot be more than 4 * MAXCODEPAGELINES bytes. */ size = st.st_size; if( size < CODEPAGE_HEADER_SIZE || size > (CODEPAGE_HEADER_SIZE + 4 * MAXCODEPAGELINES)) { DEBUG(0,("load_client_codepage: file %s is an incorrect size for a \ code page file (size=%d).\n", codepage_file_name, (int)size)); return NULL; } /* Read the first 8 bytes of the codepage file - check the version number and code page number. All the data is held in little endian format. */ if((fd = open(codepage_file_name, O_RDONLY)) == -1) { DEBUG(0,("load_client_codepage: cannot open file %s. Error was %s\n", codepage_file_name, strerror(errno))); return NULL; } if (read(fd, buf, CODEPAGE_HEADER_SIZE)!=CODEPAGE_HEADER_SIZE) { DEBUG(0,("load_client_codepage: cannot read header from file %s. Error was %s\n", codepage_file_name, strerror(errno))); goto clean_and_exit; } /* Check the version value */ if(SVAL(buf,CODEPAGE_VERSION_OFFSET) != CODEPAGE_FILE_VERSION_ID) { DEBUG(0,("load_client_codepage: filename %s has incorrect version id. \ Needed %hu, got %hu.\n", codepage_file_name, (uint16)CODEPAGE_FILE_VERSION_ID, SVAL(buf,CODEPAGE_VERSION_OFFSET))); goto clean_and_exit; } /* Check the codepage matches */ if(SVAL(buf,CODEPAGE_CLIENT_CODEPAGE_OFFSET) != (uint16)client_codepage) { DEBUG(0,("load_client_codepage: filename %s has incorrect codepage. \ Needed %hu, got %hu.\n", codepage_file_name, (uint16)client_codepage, SVAL(buf,CODEPAGE_CLIENT_CODEPAGE_OFFSET))); goto clean_and_exit; } /* Check the length is correct. */ if(IVAL(buf,CODEPAGE_LENGTH_OFFSET) != (size - CODEPAGE_HEADER_SIZE)) { DEBUG(0,("load_client_codepage: filename %s has incorrect size headers. \ Needed %u, got %u.\n", codepage_file_name, (uint32)(size - CODEPAGE_HEADER_SIZE), IVAL(buf,CODEPAGE_LENGTH_OFFSET))); goto clean_and_exit; } size -= CODEPAGE_HEADER_SIZE; /* Remove header */ /* Make sure the size is a multiple of 4. */ if((size % 4 ) != 0) { DEBUG(0,("load_client_codepage: filename %s has a codepage size not a \ multiple of 4.\n", codepage_file_name)); goto clean_and_exit; } /* Allocate space for the code page file and read it all in. */ if((cp_p = (codepage_p)malloc( size + 4 )) == NULL) { DEBUG(0,("load_client_codepage: malloc fail.\n")); goto clean_and_exit; } if(read(fd, (char *)cp_p, size)!=size) { DEBUG(0,("load_client_codepage: read fail on file %s. Error was %s.\n", codepage_file_name, strerror(errno))); goto clean_and_exit; } /* Ensure array is correctly terminated. */ memset(((char *)cp_p) + size, '\0', 4); close(fd); return cp_p; clean_and_exit: /* pseudo destructor :-) */ if(fd != -1) close(fd); if(cp_p) free((char *)cp_p); return NULL; } /**************************************************************************** Initialise the client codepage. ****************************************************************************/ void codepage_initialise(int client_codepage) { int i; static codepage_p cp = NULL; if(cp != NULL) { 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. */ cp = load_client_codepage( client_codepage ); if(cp == NULL) { #ifdef KANJI DEBUG(6,("codepage_initialise: loading dynamic codepage file %s/codepage.%d \ for code page %d failed. Using default client codepage 932\n", CODEPAGEDIR, client_codepage, client_codepage)); cp = cp_932; client_codepage = KANJI_CODEPAGE; #else /* KANJI */ DEBUG(6,("codepage_initialise: loading dynamic codepage file %s/codepage.%d \ for code page %d failed. Using default client codepage 850\n", CODEPAGEDIR, client_codepage, client_codepage)); cp = cp_850; client_codepage = MSDOS_LATIN_1_CODEPAGE; #endif /* KANJI */ } /* * Setup the function pointers for the loaded codepage. */ initialize_multibyte_vectors( client_codepage ); 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]); } /* Try and load the unicode map. */ load_dos_unicode_map(client_codepage); } /******************************************************************* 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); }