/*
 * Copyright (c) 1997, 1998, 1999 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>

RCSID("$Id: mk_req.c,v 1.18 1999/12/02 17:05:11 joda Exp $");

krb5_error_code
krb5_mk_req(krb5_context context,
	    krb5_auth_context *auth_context,
	    const krb5_flags ap_req_options,
	    char *service,
	    char *hostname,
	    krb5_data *in_data,
	    krb5_ccache ccache,
	    krb5_data *outbuf)
{
    krb5_error_code r;
    krb5_creds this_cred, *cred;
    char **realms;
    krb5_data realm_data;
    char *real_hostname;

    memset(&this_cred, 0, sizeof(this_cred));

    r = krb5_cc_get_principal(context, ccache, &this_cred.client);
  
    if(r)
	return r;

    r = krb5_expand_hostname (context, hostname, &real_hostname);
    if (r) {
	krb5_free_principal (context, this_cred.client);
	return r;
    }

    r = krb5_get_host_realm(context, real_hostname, &realms);
    if (r) {
	krb5_free_principal (context, this_cred.client);
	return r;
    }
    realm_data.length = strlen(*realms);
    realm_data.data   = *realms;

    r = krb5_build_principal (context, &this_cred.server,
			      strlen(*realms),
			      *realms,
			      service,
			      real_hostname,
			      NULL);
    free (real_hostname);
    krb5_free_host_realm (context, realms);

    if (r) {
	krb5_free_principal (context, this_cred.client);
	return r;
    }
    this_cred.times.endtime = 0;
    if (auth_context && *auth_context && (*auth_context)->keytype)
	this_cred.session.keytype = (*auth_context)->keytype;

    r = krb5_get_credentials (context, 0, ccache, &this_cred, &cred);
    if (r)
	return r;

    return krb5_mk_req_extended (context,
				 auth_context,
				 ap_req_options,
				 in_data,
				 cred,
				 outbuf);
}