1*7c478bd9Sstevel@tonic-gate /* 2*7c478bd9Sstevel@tonic-gate * CDDL HEADER START 3*7c478bd9Sstevel@tonic-gate * 4*7c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*7c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*7c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*7c478bd9Sstevel@tonic-gate * with the License. 8*7c478bd9Sstevel@tonic-gate * 9*7c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*7c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*7c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 12*7c478bd9Sstevel@tonic-gate * and limitations under the License. 13*7c478bd9Sstevel@tonic-gate * 14*7c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*7c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*7c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*7c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*7c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*7c478bd9Sstevel@tonic-gate * 20*7c478bd9Sstevel@tonic-gate * CDDL HEADER END 21*7c478bd9Sstevel@tonic-gate */ 22*7c478bd9Sstevel@tonic-gate /* 23*7c478bd9Sstevel@tonic-gate * Copyright 1999-2002 Sun Microsystems, Inc. All rights reserved. 24*7c478bd9Sstevel@tonic-gate * Use is subject to license terms. 25*7c478bd9Sstevel@tonic-gate */ 26*7c478bd9Sstevel@tonic-gate 27*7c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*7c478bd9Sstevel@tonic-gate 29*7c478bd9Sstevel@tonic-gate #include <libintl.h> 30*7c478bd9Sstevel@tonic-gate #include <limits.h> 31*7c478bd9Sstevel@tonic-gate #include <string.h> 32*7c478bd9Sstevel@tonic-gate #include <stdlib.h> 33*7c478bd9Sstevel@tonic-gate #include <stdarg.h> 34*7c478bd9Sstevel@tonic-gate #include <stdio.h> 35*7c478bd9Sstevel@tonic-gate #include <errno.h> 36*7c478bd9Sstevel@tonic-gate #include <wchar.h> 37*7c478bd9Sstevel@tonic-gate 38*7c478bd9Sstevel@tonic-gate #include <utils.h> 39*7c478bd9Sstevel@tonic-gate 40*7c478bd9Sstevel@tonic-gate static const char PNAME_FMT[] = "%s: "; 41*7c478bd9Sstevel@tonic-gate static const char ERRNO_FMT[] = ": %s\n"; 42*7c478bd9Sstevel@tonic-gate 43*7c478bd9Sstevel@tonic-gate static const char *pname; 44*7c478bd9Sstevel@tonic-gate 45*7c478bd9Sstevel@tonic-gate /*PRINTFLIKE1*/ 46*7c478bd9Sstevel@tonic-gate void 47*7c478bd9Sstevel@tonic-gate warn(const char *format, ...) 48*7c478bd9Sstevel@tonic-gate { 49*7c478bd9Sstevel@tonic-gate int err = errno; 50*7c478bd9Sstevel@tonic-gate va_list alist; 51*7c478bd9Sstevel@tonic-gate 52*7c478bd9Sstevel@tonic-gate if (pname != NULL) 53*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext(PNAME_FMT), pname); 54*7c478bd9Sstevel@tonic-gate 55*7c478bd9Sstevel@tonic-gate va_start(alist, format); 56*7c478bd9Sstevel@tonic-gate (void) vfprintf(stderr, format, alist); 57*7c478bd9Sstevel@tonic-gate va_end(alist); 58*7c478bd9Sstevel@tonic-gate 59*7c478bd9Sstevel@tonic-gate if (strrchr(format, '\n') == NULL) 60*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 61*7c478bd9Sstevel@tonic-gate } 62*7c478bd9Sstevel@tonic-gate 63*7c478bd9Sstevel@tonic-gate /*PRINTFLIKE1*/ 64*7c478bd9Sstevel@tonic-gate void 65*7c478bd9Sstevel@tonic-gate die(const char *format, ...) 66*7c478bd9Sstevel@tonic-gate { 67*7c478bd9Sstevel@tonic-gate int err = errno; 68*7c478bd9Sstevel@tonic-gate va_list alist; 69*7c478bd9Sstevel@tonic-gate 70*7c478bd9Sstevel@tonic-gate if (pname != NULL) 71*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext(PNAME_FMT), pname); 72*7c478bd9Sstevel@tonic-gate 73*7c478bd9Sstevel@tonic-gate va_start(alist, format); 74*7c478bd9Sstevel@tonic-gate (void) vfprintf(stderr, format, alist); 75*7c478bd9Sstevel@tonic-gate va_end(alist); 76*7c478bd9Sstevel@tonic-gate 77*7c478bd9Sstevel@tonic-gate if (strrchr(format, '\n') == NULL) 78*7c478bd9Sstevel@tonic-gate (void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err)); 79*7c478bd9Sstevel@tonic-gate 80*7c478bd9Sstevel@tonic-gate exit(E_ERROR); 81*7c478bd9Sstevel@tonic-gate } 82*7c478bd9Sstevel@tonic-gate 83*7c478bd9Sstevel@tonic-gate const char * 84*7c478bd9Sstevel@tonic-gate getpname(const char *arg0) 85*7c478bd9Sstevel@tonic-gate { 86*7c478bd9Sstevel@tonic-gate const char *p = strrchr(arg0, '/'); 87*7c478bd9Sstevel@tonic-gate 88*7c478bd9Sstevel@tonic-gate if (p == NULL) 89*7c478bd9Sstevel@tonic-gate p = arg0; 90*7c478bd9Sstevel@tonic-gate else 91*7c478bd9Sstevel@tonic-gate p++; 92*7c478bd9Sstevel@tonic-gate 93*7c478bd9Sstevel@tonic-gate pname = p; 94*7c478bd9Sstevel@tonic-gate return (p); 95*7c478bd9Sstevel@tonic-gate } 96*7c478bd9Sstevel@tonic-gate 97*7c478bd9Sstevel@tonic-gate void * 98*7c478bd9Sstevel@tonic-gate safe_malloc(size_t size) 99*7c478bd9Sstevel@tonic-gate { 100*7c478bd9Sstevel@tonic-gate void *a; 101*7c478bd9Sstevel@tonic-gate 102*7c478bd9Sstevel@tonic-gate if ((a = malloc(size)) == NULL) 103*7c478bd9Sstevel@tonic-gate die(gettext("out of memory\n")); 104*7c478bd9Sstevel@tonic-gate 105*7c478bd9Sstevel@tonic-gate return (a); 106*7c478bd9Sstevel@tonic-gate } 107*7c478bd9Sstevel@tonic-gate 108*7c478bd9Sstevel@tonic-gate /* 109*7c478bd9Sstevel@tonic-gate * getdefault() reads from one of the /etc/default files. It takes 110*7c478bd9Sstevel@tonic-gate * input of the filename, a variable name to search for, and a 111*7c478bd9Sstevel@tonic-gate * prefix to prepend to the result. 112*7c478bd9Sstevel@tonic-gate * 113*7c478bd9Sstevel@tonic-gate * The file and varname arguments are required. The varname argument 114*7c478bd9Sstevel@tonic-gate * must be of the form "VAR=". If the prefix argument 115*7c478bd9Sstevel@tonic-gate * is non-null, it will be prepended to the returned string. 116*7c478bd9Sstevel@tonic-gate * Double and single quotes are stripped from the result. 117*7c478bd9Sstevel@tonic-gate * 118*7c478bd9Sstevel@tonic-gate * getdefault() returns NULL if the file cannot be opened, or the 119*7c478bd9Sstevel@tonic-gate * variable cannot be found. 120*7c478bd9Sstevel@tonic-gate */ 121*7c478bd9Sstevel@tonic-gate char * 122*7c478bd9Sstevel@tonic-gate getdefault(char *file, char *varname, char *prefix) 123*7c478bd9Sstevel@tonic-gate { 124*7c478bd9Sstevel@tonic-gate FILE *fp; 125*7c478bd9Sstevel@tonic-gate char cp[PATH_MAX]; 126*7c478bd9Sstevel@tonic-gate char *tmp_cp, *ret_str = NULL; 127*7c478bd9Sstevel@tonic-gate size_t varlen; 128*7c478bd9Sstevel@tonic-gate 129*7c478bd9Sstevel@tonic-gate if ((fp = fopen(file, "r")) == NULL) 130*7c478bd9Sstevel@tonic-gate return (ret_str); 131*7c478bd9Sstevel@tonic-gate varlen = strlen(varname); 132*7c478bd9Sstevel@tonic-gate while (fgets(cp, PATH_MAX, fp) != NULL) { 133*7c478bd9Sstevel@tonic-gate size_t len; 134*7c478bd9Sstevel@tonic-gate 135*7c478bd9Sstevel@tonic-gate if (cp[0] == '#' || cp[0] == '\n') 136*7c478bd9Sstevel@tonic-gate continue; 137*7c478bd9Sstevel@tonic-gate len = strlen(cp); 138*7c478bd9Sstevel@tonic-gate if (cp[len - 1] == '\n') { 139*7c478bd9Sstevel@tonic-gate len--; 140*7c478bd9Sstevel@tonic-gate cp[len] = '\0'; 141*7c478bd9Sstevel@tonic-gate } 142*7c478bd9Sstevel@tonic-gate /* Find line containing varname */ 143*7c478bd9Sstevel@tonic-gate if (strncmp(varname, cp, varlen) == 0) { 144*7c478bd9Sstevel@tonic-gate char *cp2, *strip_ptr = NULL; 145*7c478bd9Sstevel@tonic-gate size_t tlen; 146*7c478bd9Sstevel@tonic-gate int inquotes = 0; 147*7c478bd9Sstevel@tonic-gate 148*7c478bd9Sstevel@tonic-gate cp2 = tmp_cp = cp + varlen; 149*7c478bd9Sstevel@tonic-gate /* 150*7c478bd9Sstevel@tonic-gate * Remove extra characters after any space, 151*7c478bd9Sstevel@tonic-gate * tab, or unquoted semicolon, and strip quotes. 152*7c478bd9Sstevel@tonic-gate */ 153*7c478bd9Sstevel@tonic-gate while ((*cp2 != '\0') && 154*7c478bd9Sstevel@tonic-gate (*cp2 != ' ') && (*cp2 != '\t') && 155*7c478bd9Sstevel@tonic-gate !((*cp2 == ';') && (inquotes == 0))) { 156*7c478bd9Sstevel@tonic-gate if (*cp2 == '\"' || *cp2 == '\'') { 157*7c478bd9Sstevel@tonic-gate if (*cp2 == '\"') { 158*7c478bd9Sstevel@tonic-gate inquotes = 159*7c478bd9Sstevel@tonic-gate inquotes == 0 ? 1 : 0; 160*7c478bd9Sstevel@tonic-gate } 161*7c478bd9Sstevel@tonic-gate if (strip_ptr == NULL) { 162*7c478bd9Sstevel@tonic-gate strip_ptr = cp2; 163*7c478bd9Sstevel@tonic-gate } 164*7c478bd9Sstevel@tonic-gate } else { 165*7c478bd9Sstevel@tonic-gate if (strip_ptr != NULL) { 166*7c478bd9Sstevel@tonic-gate *strip_ptr++ = *cp2; 167*7c478bd9Sstevel@tonic-gate } 168*7c478bd9Sstevel@tonic-gate } 169*7c478bd9Sstevel@tonic-gate cp2++; 170*7c478bd9Sstevel@tonic-gate } 171*7c478bd9Sstevel@tonic-gate if (strip_ptr != NULL) { 172*7c478bd9Sstevel@tonic-gate *strip_ptr = '\0'; 173*7c478bd9Sstevel@tonic-gate } 174*7c478bd9Sstevel@tonic-gate len = cp2 - tmp_cp; 175*7c478bd9Sstevel@tonic-gate if (prefix) { 176*7c478bd9Sstevel@tonic-gate tlen = len + strlen(prefix) + 1; 177*7c478bd9Sstevel@tonic-gate ret_str = safe_malloc(tlen); 178*7c478bd9Sstevel@tonic-gate (void) snprintf(ret_str, tlen, "%s%s", 179*7c478bd9Sstevel@tonic-gate prefix, tmp_cp); 180*7c478bd9Sstevel@tonic-gate } else { 181*7c478bd9Sstevel@tonic-gate tlen = len + 1; 182*7c478bd9Sstevel@tonic-gate ret_str = safe_malloc(tlen); 183*7c478bd9Sstevel@tonic-gate (void) snprintf(ret_str, tlen, "%s", tmp_cp); 184*7c478bd9Sstevel@tonic-gate } 185*7c478bd9Sstevel@tonic-gate break; 186*7c478bd9Sstevel@tonic-gate } 187*7c478bd9Sstevel@tonic-gate } 188*7c478bd9Sstevel@tonic-gate (void) fclose(fp); 189*7c478bd9Sstevel@tonic-gate return (ret_str); 190*7c478bd9Sstevel@tonic-gate } 191