b657667fa3
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@4068 ec53bebd-3082-4978-b11e-865c3cabbd6b
91 lines
2.9 KiB
C
91 lines
2.9 KiB
C
/*
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* Copyright (c) 1997 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 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 "krb5_locl.h"
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RCSID("$Id$");
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static char *
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get_logname(void)
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{
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char *p;
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if((p = getenv("USER")))
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return p;
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if((p = getenv("LOGNAME")))
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return p;
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#if defined(HAVE_GETLOGIN) && !defined(POSIX_GETLOGIN)
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if((p = getlogin()))
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return p;
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#endif
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return NULL;
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}
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krb5_error_code
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krb5_get_default_principal (krb5_context context,
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krb5_principal *princ)
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{
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krb5_error_code ret;
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struct passwd *pw;
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char *p;
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krb5_ccache id;
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ret = krb5_cc_default(context, &id);
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if(ret == 0){
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ret = krb5_cc_get_principal(context, id, princ);
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krb5_cc_close(context, id);
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if(ret == 0)
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return 0;
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}
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pw = getpwuid(getuid());
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if(pw == NULL){
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p = get_logname();
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if(p == NULL)
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return ENOTTY;
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ret = krb5_make_principal(context, princ, NULL, p, NULL);
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}else{
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if(strcmp(pw->pw_name, "root") == 0){
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p = get_logname();
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ret = krb5_make_principal(context, princ, NULL, pw->pw_name,
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"root", NULL);
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}else
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ret = krb5_make_principal(context, princ, NULL, pw->pw_name, NULL);
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}
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return ret;
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}
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