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/*
* Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb_locl.h"
RCSID("$Id: getfile.c,v 1.5 1999/12/02 16:58:42 joda Exp $");
static int
is_suid(void)
{
int ret = 0;
#ifdef HAVE_GETUID
ret |= getuid() != geteuid();
#endif
#ifdef HAVE_GETGID
ret |= getgid() != getegid();
#endif
return ret;
}
static int
get_file(const char **files, int num, const char *file, char *buf, size_t len)
{
const char *p, **q;
int i = 0;
if(!is_suid() && (p = getenv("KRBCONFDIR"))){
if(num == i){
snprintf(buf, len, "%s/%s", p, file);
return 0;
}
i++;
}
for(q = files; *q; q++, i++){
if(num == i){
snprintf(buf, len, "%s", *q);
return 0;
}
}
return -1;
}
int
krb_get_krbconf(int num, char *buf, size_t len)
{
const char *files[] = KRB_CNF_FILES;
return get_file(files, num, "krb.conf", buf, len);
}
int
krb_get_krbrealms(int num, char *buf, size_t len)
{
const char *files[] = KRB_RLM_FILES;
return get_file(files, num, "krb.realms", buf, len);
}
int
krb_get_krbextra(int num, char *buf, size_t len)
{
const char *files[] = { "/etc/krb.extra", NULL };
return get_file(files, num, "krb.extra", buf, len);
}
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