1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Paul Borman at Krystal Technologies. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include <sys/cdefs.h> 38 __FBSDID("$FreeBSD$"); 39 40 #include <rune.h> 41 #include <errno.h> 42 #include <limits.h> 43 #include <string.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <unistd.h> 47 #include "setlocale.h" 48 49 extern int _none_init(_RuneLocale *); 50 extern int _UTF2_init(_RuneLocale *); 51 extern int _EUC_init(_RuneLocale *); 52 extern int _BIG5_init(_RuneLocale *); 53 extern int _MSKanji_init(_RuneLocale *); 54 extern _RuneLocale *_Read_RuneMagi(FILE *); 55 56 int 57 setrunelocale(encoding) 58 char *encoding; 59 { 60 FILE *fp; 61 char name[PATH_MAX]; 62 _RuneLocale *rl; 63 64 if (!encoding || strlen(encoding) > ENCODING_LEN) 65 return(EFAULT); 66 67 /* 68 * The "C" and "POSIX" locale are always here. 69 */ 70 if (!strcmp(encoding, "C") || !strcmp(encoding, "POSIX")) { 71 _CurrentRuneLocale = &_DefaultRuneLocale; 72 return(0); 73 } 74 75 if (_PathLocale == NULL) { 76 char *p = getenv("PATH_LOCALE"); 77 78 if (p != NULL 79 #ifndef __NETBSD_SYSCALLS 80 && !issetugid() 81 #endif 82 ) { 83 if (strlen(p) + 1/*"/"*/ + ENCODING_LEN + 84 1/*"/"*/ + CATEGORY_LEN >= PATH_MAX) 85 return(EFAULT); 86 _PathLocale = strdup(p); 87 if (_PathLocale == NULL) 88 return (errno); 89 } else 90 _PathLocale = _PATH_LOCALE; 91 } 92 /* Range checking not needed, encoding length already checked above */ 93 (void) strcpy(name, _PathLocale); 94 (void) strcat(name, "/"); 95 (void) strcat(name, encoding); 96 (void) strcat(name, "/LC_CTYPE"); 97 98 if ((fp = fopen(name, "r")) == NULL) 99 return(ENOENT); 100 101 if ((rl = _Read_RuneMagi(fp)) == 0) { 102 fclose(fp); 103 return(EFTYPE); 104 } 105 fclose(fp); 106 107 if (!rl->encoding[0]) 108 return(EINVAL); 109 else if (!strcmp(rl->encoding, "NONE")) 110 return(_none_init(rl)); 111 else if (!strcmp(rl->encoding, "UTF2")) 112 return(_UTF2_init(rl)); 113 else if (!strcmp(rl->encoding, "EUC")) 114 return(_EUC_init(rl)); 115 else if (!strcmp(rl->encoding, "BIG5")) 116 return(_BIG5_init(rl)); 117 else if (!strcmp(rl->encoding, "MSKanji")) 118 return(_MSKanji_init(rl)); 119 else 120 return(EINVAL); 121 } 122 123