/*
 * Copyright (c) 1997 - 2001 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: creds.c,v 1.15 2001/05/14 06:14:45 assar Exp $");

krb5_error_code
krb5_free_cred_contents (krb5_context context, krb5_creds *c)
{
    return krb5_free_creds_contents (context, c);
}    

krb5_error_code
krb5_free_creds_contents (krb5_context context, krb5_creds *c)
{
    krb5_free_principal (context, c->client);
    c->client = NULL;
    krb5_free_principal (context, c->server);
    c->server = NULL;
    krb5_free_keyblock_contents (context, &c->session);
    krb5_data_free (&c->ticket);
    krb5_data_free (&c->second_ticket);
    free_AuthorizationData (&c->authdata);
    krb5_free_addresses (context, &c->addresses);
    return 0;
}

krb5_error_code
krb5_copy_creds_contents (krb5_context context,
			  const krb5_creds *incred,
			  krb5_creds *c)
{
    krb5_error_code ret;

    memset(c, 0, sizeof(*c));
    ret = krb5_copy_principal (context, incred->client, &c->client);
    if (ret)
	goto fail;
    ret = krb5_copy_principal (context, incred->server, &c->server);
    if (ret)
	goto fail;
    ret = krb5_copy_keyblock_contents (context, &incred->session, &c->session);
    if (ret)
	goto fail;
    c->times = incred->times;
    ret = krb5_data_copy (&c->ticket,
			  incred->ticket.data,
			  incred->ticket.length);
    if (ret)
	goto fail;
    ret = krb5_data_copy (&c->second_ticket,
			  incred->second_ticket.data,
			  incred->second_ticket.length);
    if (ret)
	goto fail;
    ret = copy_AuthorizationData(&incred->authdata, &c->authdata);
    if (ret)
	goto fail;
    ret = krb5_copy_addresses (context,
			       &incred->addresses,
			       &c->addresses);
    if (ret)
	goto fail;
    c->flags = incred->flags;
    return 0;

fail:
    krb5_free_creds_contents (context, c);
    return ret;
}

krb5_error_code
krb5_copy_creds (krb5_context context,
		 const krb5_creds *incred,
		 krb5_creds **outcred)
{
    krb5_creds *c;

    c = malloc (sizeof (*c));
    if (c == NULL) {
	krb5_set_error_string (context, "malloc: out of memory");
	return ENOMEM;
    }
    memset (c, 0, sizeof(*c));
    *outcred = c;
    return krb5_copy_creds_contents (context, incred, c);
}

krb5_error_code
krb5_free_creds (krb5_context context, krb5_creds *c)
{
    krb5_free_creds_contents (context, c);
    free (c);
    return 0;
}

/*
 * Return TRUE if `mcreds' and `creds' are equal (`whichfields'
 * determines what equal means).
 */

krb5_boolean
krb5_compare_creds(krb5_context context, krb5_flags whichfields, 
		   const krb5_creds *mcreds, const krb5_creds *creds)
{
    krb5_boolean match;

    if(whichfields & KRB5_TC_DONT_MATCH_REALM)
	match = krb5_principal_compare_any_realm(context, 
						 mcreds->server, 
						 creds->server);
    else
	match = krb5_principal_compare(context, mcreds->server, creds->server);
    if(match && (whichfields & KRB5_TC_MATCH_KEYTYPE) &&
       !krb5_enctypes_compatible_keys (context,
				       mcreds->session.keytype,
				       creds->session.keytype))
	match = FALSE;
    return match;
}