/*
 * Copyright (c) 2004, Archie L. Cobbs.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * * 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.
 * * Neither the name "sl2tps" 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 COPYRIGHT HOLDERS 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
 * COPYRIGHT OWNER 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.
 *
 * Author: Archie Cobbs <archie@freebsd.org>
 */

#include "sls_global.h"
#include "sls_config.h"

/*
 * L2TP server callbacks.
 */
static ppp_l2tp_server_admit_t		sls_l2tp_admit;
static ppp_l2tp_server_destroy_t	sls_l2tp_destroy;

int
sls_l2tp_start(struct ppp_engine *engine)
{
	struct ppp_l2tp_server_info l2tp_info;
	int port;

	/* Set port if not default */
	port = (sls_curconf->bind_port == 0) ?
	    L2TP_PORT : sls_curconf->bind_port;

	/* Start L2TP server */
	memset(&l2tp_info, 0, sizeof(l2tp_info));
	l2tp_info.arg = engine;
	l2tp_info.vendor = "sl2tp2";
	l2tp_info.admit = sls_l2tp_admit;
	l2tp_info.natmap = NULL;
	l2tp_info.destroy = sls_l2tp_destroy;
	if (ppp_l2tp_server_start(engine,
	    &l2tp_info, sls_curconf->bind_ip, port, 0) == -1) {
		alog(LOG_ERR, "can't start L2TP server");
		return -1;
	}

	/* Done */
	return 0;
}

void
sls_l2tp_stop(struct ppp_engine *engine)
{
	ppp_l2tp_server_stop(engine);
}

static void *
sls_l2tp_admit(void *arg, struct ppp_l2tp_peer *peer, struct in_addr ip,
	u_int16_t port, struct ppp_auth_config *auth, char *name, size_t nsize)
{
	*auth = sls_auth_config;
	snprintf(name, nsize, "[%s:%u]", inet_ntoa(ip), port);
	return ((void *)1);
}

static void
sls_l2tp_destroy(void *arg, void *carg)
{
}