97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/*
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* Copyright (c) 1995, 1996, 1997, 1998 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the Kungliga Tekniska
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* Högskolan and its contributors.
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*
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* 4. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "krb_locl.h"
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RCSID("$Id: getfile.c,v 1.4 1998/06/09 19:25:19 joda Exp $");
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static int
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is_suid(void)
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{
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int ret = 0;
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#ifdef HAVE_GETUID
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ret |= getuid() != geteuid();
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#endif
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#ifdef HAVE_GETGID
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ret |= getgid() != getegid();
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#endif
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return ret;
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}
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static int
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get_file(const char **files, int num, const char *file, char *buf, size_t len)
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{
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const char *p, **q;
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int i = 0;
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if(!is_suid() && (p = getenv("KRBCONFDIR"))){
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if(num == i){
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snprintf(buf, len, "%s/%s", p, file);
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return 0;
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}
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i++;
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}
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for(q = files; *q; q++, i++){
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if(num == i){
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snprintf(buf, len, "%s", *q);
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return 0;
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}
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}
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return -1;
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}
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int
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krb_get_krbconf(int num, char *buf, size_t len)
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{
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const char *files[] = KRB_CNF_FILES;
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return get_file(files, num, "krb.conf", buf, len);
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}
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int
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krb_get_krbrealms(int num, char *buf, size_t len)
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{
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const char *files[] = KRB_RLM_FILES;
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return get_file(files, num, "krb.realms", buf, len);
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}
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int
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krb_get_krbextra(int num, char *buf, size_t len)
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{
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const char *files[] = { "/etc/krb.extra", NULL };
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return get_file(files, num, "krb.extra", buf, len);
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}
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