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