/*
 * Copyright (c) 1997 - 2001, 2003, 2005 - 2005 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 "kadm5_locl.h"

RCSID("$Id$");

kadm5_ret_t
kadm5_s_rename_principal(void *server_handle,
			 krb5_principal source,
			 krb5_principal target)
{
    kadm5_server_context *context = server_handle;
    kadm5_ret_t ret;
    hdb_entry_ex ent;
    krb5_principal oldname;

    memset(&ent, 0, sizeof(ent));
    if(krb5_principal_compare(context->context, source, target))
	return KADM5_DUP; /* XXX is this right? */
    ret = context->db->hdb_open(context->context, context->db, O_RDWR, 0);
    if(ret)
	return ret;
    ret = context->db->hdb_fetch_kvno(context->context, context->db,
				      source, HDB_F_GET_ANY|HDB_F_ADMIN_DATA, 0, &ent);
    if(ret){
	context->db->hdb_close(context->context, context->db);
	goto out;
    }
    ret = _kadm5_set_modifier(context, &ent.entry);
    if(ret)
	goto out2;
    {
	/* fix salt */
	size_t i;
	Salt salt;
	krb5_salt salt2;
	memset(&salt, 0, sizeof(salt));
	krb5_get_pw_salt(context->context, source, &salt2);
	salt.type = hdb_pw_salt;
	salt.salt = salt2.saltvalue;
	for(i = 0; i < ent.entry.keys.len; i++){
	    if(ent.entry.keys.val[i].salt == NULL){
		ent.entry.keys.val[i].salt =
		    malloc(sizeof(*ent.entry.keys.val[i].salt));
		if(ent.entry.keys.val[i].salt == NULL)
		    return ENOMEM;
		ret = copy_Salt(&salt, ent.entry.keys.val[i].salt);
		if(ret)
		    break;
	    }
	}
	krb5_free_salt(context->context, salt2);
    }
    if(ret)
	goto out2;
    oldname = ent.entry.principal;
    ent.entry.principal = target;

    ret = hdb_seal_keys(context->context, context->db, &ent.entry);
    if (ret) {
	ent.entry.principal = oldname;
	goto out2;
    }

    kadm5_log_rename (context, source, &ent.entry);

    ret = context->db->hdb_store(context->context, context->db, 0, &ent);
    if(ret){
	ent.entry.principal = oldname;
	goto out2;
    }
    ret = context->db->hdb_remove(context->context, context->db, oldname);
    ent.entry.principal = oldname;
out2:
    context->db->hdb_close(context->context, context->db);
    hdb_free_entry(context->context, &ent);
out:
    return _kadm5_error_code(ret);
}