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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1999-2002 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <libintl.h>
#include <limits.h>
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <errno.h>
#include <wchar.h>
#include <utils.h>
static const char PNAME_FMT[] = "%s: ";
static const char ERRNO_FMT[] = ": %s\n";
static const char *pname;
/*PRINTFLIKE1*/
void
warn(const char *format, ...)
{
int err = errno;
va_list alist;
if (pname != NULL)
(void) fprintf(stderr, gettext(PNAME_FMT), pname);
va_start(alist, format);
(void) vfprintf(stderr, format, alist);
va_end(alist);
if (strrchr(format, '\n') == NULL)
(void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err));
}
/*PRINTFLIKE1*/
void
die(const char *format, ...)
{
int err = errno;
va_list alist;
if (pname != NULL)
(void) fprintf(stderr, gettext(PNAME_FMT), pname);
va_start(alist, format);
(void) vfprintf(stderr, format, alist);
va_end(alist);
if (strrchr(format, '\n') == NULL)
(void) fprintf(stderr, gettext(ERRNO_FMT), strerror(err));
exit(E_ERROR);
}
const char *
getpname(const char *arg0)
{
const char *p = strrchr(arg0, '/');
if (p == NULL)
p = arg0;
else
p++;
pname = p;
return (p);
}
void *
safe_malloc(size_t size)
{
void *a;
if ((a = malloc(size)) == NULL)
die(gettext("out of memory\n"));
return (a);
}
/*
* getdefault() reads from one of the /etc/default files. It takes
* input of the filename, a variable name to search for, and a
* prefix to prepend to the result.
*
* The file and varname arguments are required. The varname argument
* must be of the form "VAR=". If the prefix argument
* is non-null, it will be prepended to the returned string.
* Double and single quotes are stripped from the result.
*
* getdefault() returns NULL if the file cannot be opened, or the
* variable cannot be found.
*/
char *
getdefault(char *file, char *varname, char *prefix)
{
FILE *fp;
char cp[PATH_MAX];
char *tmp_cp, *ret_str = NULL;
size_t varlen;
if ((fp = fopen(file, "r")) == NULL)
return (ret_str);
varlen = strlen(varname);
while (fgets(cp, PATH_MAX, fp) != NULL) {
size_t len;
if (cp[0] == '#' || cp[0] == '\n')
continue;
len = strlen(cp);
if (cp[len - 1] == '\n') {
len--;
cp[len] = '\0';
}
/* Find line containing varname */
if (strncmp(varname, cp, varlen) == 0) {
char *cp2, *strip_ptr = NULL;
size_t tlen;
int inquotes = 0;
cp2 = tmp_cp = cp + varlen;
/*
* Remove extra characters after any space,
* tab, or unquoted semicolon, and strip quotes.
*/
while ((*cp2 != '\0') &&
(*cp2 != ' ') && (*cp2 != '\t') &&
!((*cp2 == ';') && (inquotes == 0))) {
if (*cp2 == '\"' || *cp2 == '\'') {
if (*cp2 == '\"') {
inquotes =
inquotes == 0 ? 1 : 0;
}
if (strip_ptr == NULL) {
strip_ptr = cp2;
}
} else {
if (strip_ptr != NULL) {
*strip_ptr++ = *cp2;
}
}
cp2++;
}
if (strip_ptr != NULL) {
*strip_ptr = '\0';
}
len = cp2 - tmp_cp;
if (prefix) {
tlen = len + strlen(prefix) + 1;
ret_str = safe_malloc(tlen);
(void) snprintf(ret_str, tlen, "%s%s",
prefix, tmp_cp);
} else {
tlen = len + 1;
ret_str = safe_malloc(tlen);
(void) snprintf(ret_str, tlen, "%s", tmp_cp);
}
break;
}
}
(void) fclose(fp);
return (ret_str);
}
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