/*
 * Copyright (c) 1997 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. All advertising materials mentioning features or use of this software 
 *    must display the following acknowledgement: 
 *      This product includes software developed by Kungliga Tekniska 
 *      Högskolan and its contributors. 
 *
 * 4. 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_client_send(kadm5_client_context *context, krb5_storage *sp)
{
    krb5_data msg, out;
    krb5_error_code ret;
    unsigned char buf[1024];
    size_t len;
    len = sp->seek(sp, 0, SEEK_CUR);
    sp->seek(sp, 0, SEEK_SET);
    sp->fetch(sp, buf, len);
    msg.data = buf;
    msg.length = len;
    
    ret = krb5_mk_priv(context->context, context->ac, &msg, &out, NULL);
    if(ret){
	return ret;
    }
    buf[0] = (out.length >> 24) & 0xff;
    buf[1] = (out.length >> 16) & 0xff;
    buf[2] = (out.length >> 8) & 0xff;
    buf[3] = out.length & 0xff;
    krb5_net_write(context->context, &context->sock, buf, 4);
    krb5_net_write(context->context, &context->sock, out.data, out.length);
    krb5_data_free(&out);
    return 0;
}

kadm5_ret_t
_kadm5_client_recv(kadm5_client_context *context, krb5_storage *sp)
{
    unsigned char buf[1024];
    size_t len;
    krb5_error_code ret;
    krb5_data data, reply;
    krb5_net_read(context->context, &context->sock, buf, 4);
    len = (buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
    if(len > sizeof(buf))
	return ENOMEM; /* XXX */
    krb5_net_read(context->context, &context->sock, buf, len);
    data.length = len;
    data.data = buf;
    ret = krb5_rd_priv(context->context, context->ac, &data, &reply, NULL);
    sp->store(sp, reply.data, reply.length);
    sp->seek(sp, 0, SEEK_SET);
    krb5_data_free(&reply);
    return ret;
}