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/*
* Copyright (c) 1995, 1996, 1997 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the Kungliga Tekniska
* Högskolan and its contributors.
*
* 4. 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: get_default_principal.c,v 1.10 1997/04/01 08:18:28 joda Exp $");
int
krb_get_default_principal(char *name, char *instance, char *realm)
{
char *file;
int ret;
char *p;
if ((file = getenv("KRBTKFILE")) == NULL)
file = TKT_FILE;
ret = krb_get_tf_fullname(file, name, instance, realm);
if(ret == KSUCCESS)
return 0;
p = getenv("KRB4PRINCIPAL");
if(p && kname_parse(name, instance, realm, p) == KSUCCESS)
return 1;
#ifdef HAVE_PWD_H
{
struct passwd *pw;
pw = getpwuid(getuid());
if(pw == NULL){
return -1;
}
strcpy(name, pw->pw_name);
strcpy(instance, "");
krb_get_lrealm(realm, 1);
if(strcmp(name, "root") == 0){
p = NULL;
#if defined(HAVE_GETLOGIN) && !defined(POSIX_GETLOGIN)
p = getlogin();
#endif
if(p == NULL)
p = getenv("USER");
if(p == NULL)
p = getenv("LOGNAME");
if(p){
strncpy (name, p, ANAME_SZ);
name[ANAME_SZ - 1] = '\0';
strcpy(instance, "root");
}
}
return 1;
}
#endif
return -1;
}
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