2 * Copyright (c) 1997 - 2001 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the Institute nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 #include "krb5_locl.h"
36 RCSID("$Id: get_default_principal.c 14870 2005-04-20 20:53:29Z lha $");
39 * Try to find out what's a reasonable default principal.
45 const char *user = getenv("USER");
47 user = getenv("LOGNAME");
49 user = getenv("USERNAME");
54 * Will only use operating-system dependant operation to get the
55 * default principal, for use of functions that in ccache layer to
56 * avoid recursive calls.
60 _krb5_get_default_principal_local (krb5_context context,
61 krb5_principal *princ)
73 user = get_env_user();
74 if(user != NULL && strcmp(user, "root") != 0)
75 ret = krb5_make_principal(context, princ, NULL, user, "root", NULL);
77 ret = krb5_make_principal(context, princ, NULL, "root", NULL);
79 struct passwd *pw = getpwuid(uid);
83 user = get_env_user();
88 krb5_set_error_string(context,
89 "unable to figure out current principal");
90 return ENOTTY; /* XXX */
92 ret = krb5_make_principal(context, princ, NULL, user, NULL);
97 krb5_error_code KRB5_LIB_FUNCTION
98 krb5_get_default_principal (krb5_context context,
99 krb5_principal *princ)
106 ret = krb5_cc_default (context, &id);
108 ret = krb5_cc_get_principal (context, id, princ);
109 krb5_cc_close (context, id);
114 return _krb5_get_default_principal_local(context, princ);