/*
 * lib/krb5/krb/copy_tick.c
 *
 * Copyright 1990,1991 by the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 * 
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 * 
 *
 * krb5_copy_ticket()
 */

#include "k5-int.h"

static krb5_error_code
krb5_copy_enc_tkt_part(context, partfrom, partto)
    krb5_context context;
    const krb5_enc_tkt_part *partfrom;
    krb5_enc_tkt_part **partto;
{
    krb5_error_code retval;
    krb5_enc_tkt_part *tempto;

    if (!(tempto = (krb5_enc_tkt_part *)malloc(sizeof(*tempto))))
	return ENOMEM;
#ifdef HAVE_C_STRUCTURE_ASSIGNMENT
    *tempto = *partfrom;
#else
    memcpy(tempto, partfrom, sizeof(krb5_enc_tkt_part));
#endif
    retval = krb5_copy_keyblock(context, partfrom->session,
				&tempto->session);
    if (retval) {
	krb5_xfree(tempto);
	return retval;
    }
    retval = krb5_copy_principal(context, partfrom->client, &tempto->client);
    if (retval) {
	krb5_free_keyblock(context, tempto->session);
	krb5_xfree(tempto);
	return retval;
    }
    tempto->transited = partfrom->transited;
    if (tempto->transited.tr_contents.length == 0) {
	tempto->transited.tr_contents.data = 0;
    } else {
	tempto->transited.tr_contents.data =
	  malloc(partfrom->transited.tr_contents.length);
	if (!tempto->transited.tr_contents.data) {
	    krb5_free_principal(context, tempto->client);
	    krb5_free_keyblock(context, tempto->session);
	    krb5_xfree(tempto);
	    return ENOMEM;
	}
	memcpy((char *)tempto->transited.tr_contents.data,
	       (char *)partfrom->transited.tr_contents.data,
	       partfrom->transited.tr_contents.length);
    }

    retval = krb5_copy_addresses(context, partfrom->caddrs, &tempto->caddrs);
    if (retval) {
	krb5_xfree(tempto->transited.tr_contents.data);
	krb5_free_principal(context, tempto->client);
	krb5_free_keyblock(context, tempto->session);
	krb5_xfree(tempto);
	return retval;
    }
    if (partfrom->authorization_data) {
	retval = krb5_copy_authdata(context, partfrom->authorization_data,
				    &tempto->authorization_data);
	if (retval) {
	    krb5_free_addresses(context, tempto->caddrs);
	    krb5_xfree(tempto->transited.tr_contents.data);
	    krb5_free_principal(context, tempto->client);
	    krb5_free_keyblock(context, tempto->session);
	    krb5_xfree(tempto);
	    return retval;
	}
    }
    *partto = tempto;
    return 0;
}

krb5_error_code
krb5_copy_ticket(context, from, pto)
    krb5_context context;
    const krb5_ticket *from;
    krb5_ticket **pto;
{
    krb5_error_code retval;
    krb5_ticket *tempto;
    krb5_data *scratch;

    if (!(tempto = (krb5_ticket *)malloc(sizeof(*tempto))))
	return ENOMEM;
#ifdef HAVE_C_STRUCTURE_ASSIGNMENT
    *tempto = *from;
#else
    memcpy(tempto, from, sizeof(krb5_ticket));
#endif
    retval = krb5_copy_principal(context, from->server, &tempto->server);
    if (retval) {
	krb5_xfree(tempto);
	return retval;
    }
    retval = krb5_copy_data(context, &from->enc_part.ciphertext, &scratch);
    if (retval) {
	krb5_free_principal(context, tempto->server);
	krb5_xfree(tempto);
	return retval;
    }
    tempto->enc_part.ciphertext = *scratch;
    krb5_xfree(scratch);
    retval = krb5_copy_enc_tkt_part(context, from->enc_part2, &tempto->enc_part2);
    if (retval) {
	krb5_xfree(tempto->enc_part.ciphertext.data);
	krb5_free_principal(context, tempto->server);
	krb5_xfree(tempto);
	return retval;
    }	
    *pto = tempto;
    return 0;
}
