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/*
* Copyright (c) 1997 - 1999, 2002 - 2003 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 "krb5_locl.h"
KRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL
krb5_aname_to_localname (krb5_context context,
krb5_const_principal aname,
size_t lnsize,
char *lname)
{
krb5_error_code ret;
krb5_realm *lrealms, *r;
int valid;
size_t len;
const char *res;
ret = krb5_get_default_realms (context, &lrealms);
if (ret)
return ret;
valid = 0;
for (r = lrealms; *r != NULL; ++r) {
if (strcmp (*r, aname->realm) == 0) {
valid = 1;
break;
}
}
krb5_free_host_realm (context, lrealms);
if (valid == 0)
return KRB5_NO_LOCALNAME;
if (aname->name.name_string.len == 1)
res = aname->name.name_string.val[0];
else if (aname->name.name_string.len == 2
&& strcmp (aname->name.name_string.val[1], "root") == 0) {
krb5_principal rootprinc;
krb5_boolean userok;
res = "root";
ret = krb5_copy_principal(context, aname, &rootprinc);
if (ret)
return ret;
userok = krb5_kuserok(context, rootprinc, res);
krb5_free_principal(context, rootprinc);
if (!userok)
return KRB5_NO_LOCALNAME;
} else
return KRB5_NO_LOCALNAME;
len = strlen (res);
if (len >= lnsize)
return ERANGE;
strlcpy (lname, res, lnsize);
return 0;
}
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