155682Smarkm/* 2233294Sstas * Copyright (c) 1997 - 1999, 2002 - 2003 Kungliga Tekniska H��gskolan 3233294Sstas * (Royal Institute of Technology, Stockholm, Sweden). 4233294Sstas * All rights reserved. 555682Smarkm * 6233294Sstas * Redistribution and use in source and binary forms, with or without 7233294Sstas * modification, are permitted provided that the following conditions 8233294Sstas * are met: 955682Smarkm * 10233294Sstas * 1. Redistributions of source code must retain the above copyright 11233294Sstas * notice, this list of conditions and the following disclaimer. 1255682Smarkm * 13233294Sstas * 2. Redistributions in binary form must reproduce the above copyright 14233294Sstas * notice, this list of conditions and the following disclaimer in the 15233294Sstas * documentation and/or other materials provided with the distribution. 1655682Smarkm * 17233294Sstas * 3. Neither the name of the Institute nor the names of its contributors 18233294Sstas * may be used to endorse or promote products derived from this software 19233294Sstas * without specific prior written permission. 2055682Smarkm * 21233294Sstas * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 22233294Sstas * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23233294Sstas * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24233294Sstas * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 25233294Sstas * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26233294Sstas * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27233294Sstas * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28233294Sstas * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29233294Sstas * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30233294Sstas * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31233294Sstas * SUCH DAMAGE. 3255682Smarkm */ 3355682Smarkm 34233294Sstas#include "krb5_locl.h" 3555682Smarkm 36233294SstasKRB5_LIB_FUNCTION krb5_error_code KRB5_LIB_CALL 3755682Smarkmkrb5_aname_to_localname (krb5_context context, 3855682Smarkm krb5_const_principal aname, 3955682Smarkm size_t lnsize, 4055682Smarkm char *lname) 4155682Smarkm{ 4255682Smarkm krb5_error_code ret; 4355682Smarkm krb5_realm *lrealms, *r; 44120945Snectar int valid; 4555682Smarkm size_t len; 46102644Snectar const char *res; 4755682Smarkm 4855682Smarkm ret = krb5_get_default_realms (context, &lrealms); 4955682Smarkm if (ret) 5055682Smarkm return ret; 5155682Smarkm 52120945Snectar valid = 0; 5355682Smarkm for (r = lrealms; *r != NULL; ++r) { 54120945Snectar if (strcmp (*r, aname->realm) == 0) { 55120945Snectar valid = 1; 5655682Smarkm break; 57120945Snectar } 5855682Smarkm } 5955682Smarkm krb5_free_host_realm (context, lrealms); 60120945Snectar if (valid == 0) 6155682Smarkm return KRB5_NO_LOCALNAME; 6255682Smarkm 6355682Smarkm if (aname->name.name_string.len == 1) 6455682Smarkm res = aname->name.name_string.val[0]; 6555682Smarkm else if (aname->name.name_string.len == 2 66120945Snectar && strcmp (aname->name.name_string.val[1], "root") == 0) { 67120945Snectar krb5_principal rootprinc; 68120945Snectar krb5_boolean userok; 69120945Snectar 7055682Smarkm res = "root"; 71120945Snectar 72120945Snectar ret = krb5_copy_principal(context, aname, &rootprinc); 73120945Snectar if (ret) 74120945Snectar return ret; 75233294Sstas 76120945Snectar userok = krb5_kuserok(context, rootprinc, res); 77120945Snectar krb5_free_principal(context, rootprinc); 78120945Snectar if (!userok) 79120945Snectar return KRB5_NO_LOCALNAME; 80120945Snectar 81120945Snectar } else 8255682Smarkm return KRB5_NO_LOCALNAME; 8355682Smarkm 8455682Smarkm len = strlen (res); 8555682Smarkm if (len >= lnsize) 8655682Smarkm return ERANGE; 87120945Snectar strlcpy (lname, res, lnsize); 88120945Snectar 8955682Smarkm return 0; 9055682Smarkm} 91