/*
 * Public Release 3
 * 
 * $Id: krt_symbols_sysctl.c,v 1.2 1997/07/17 22:43:18 chopps Exp $
 */

/*
 * ------------------------------------------------------------------------
 * 
 * Copyright (c) 1996, 1997 The Regents of the University of Michigan
 * All Rights Reserved
 *  
 * Royalty-free licenses to redistribute GateD Release
 * 3 in whole or in part may be obtained by writing to:
 * 
 * 	Merit GateDaemon Project
 * 	4251 Plymouth Road, Suite C
 * 	Ann Arbor, MI 48105
 *  
 * THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION WARRANTIES OF 
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF THE
 * UNIVERSITY OF MICHIGAN AND MERIT DO NOT WARRANT THAT THE
 * FUNCTIONS CONTAINED IN THE SOFTWARE WILL MEET LICENSEE'S REQUIREMENTS OR
 * THAT OPERATION WILL BE UNINTERRUPTED OR ERROR FREE. The Regents of the
 * University of Michigan and Merit shall not be liable for
 * any special, indirect, incidental or consequential damages with respect
 * to any claim by Licensee or any third party arising from use of the
 * software. GateDaemon was originated and developed through release 3.0
 * by Cornell University and its collaborators.
 * 
 * Please forward bug fixes, enhancements and questions to the
 * gated mailing list: gated-people@gated.merit.edu.
 * 
 * ------------------------------------------------------------------------
 * 
 * Copyright (c) 1990,1991,1992,1993,1994,1995 by Cornell University.
 *     All rights reserved.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND WITHOUT ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT
 * LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * GateD is based on Kirton's EGP, UC Berkeley's routing
 * daemon	 (routed), and DCN's HELLO routing Protocol.
 * Development of GateD has been supported in part by the
 * National Science Foundation.
 * 
 * ------------------------------------------------------------------------
 * 
 * Portions of this software may fall under the following
 * copyrights:
 * 
 * Copyright (c) 1988 Regents of the University of California.
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms are
 * permitted provided that the above copyright notice and
 * this paragraph are duplicated in all such forms and that
 * any documentation, advertising materials, and other
 * materials related to such distribution and use
 * acknowledge that the software was developed by the
 * University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote
 * products derived from this software without specific
 * prior written permission.  THIS SOFTWARE IS PROVIDED
 * ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */


#include "defines.h"
#ifdef	PROTO_INET
#define	INCLUDE_UDP
#define	INCLUDE_UDP_VAR
#endif	/* PROTO_INET */
#ifdef	PROTO_INET6
#define	INCLUDE_IF
#endif	/* PROTO_INET6 */
#include "include.h"
#ifdef	PROTO_INET
#include "inet.h"
#endif	/* PROTO_INET */
#ifdef	PROTO_INET6
#include "inet6.h"
#if	defined(SHIN)||defined(INRIA)
#include <netinet/in6_var.h>
#endif	/* SHIN || INRIA */
#if	defined(HYDRANGEA)
#include <netinet6/in6_var.h>
#endif	/* HYDRANGEA */
#endif	/* PROTO_INET6 */
#include "krt.h"
#include "krt_var.h"
#include <sys/sysctl.h>

int
krt_symbols __PF1(tp, task *)
{
    char buf[BUFSIZ];
    int name[CTL_MAXNAME];
    size_t len;
    int value;

    name[0] = CTL_KERN;
    name[1] = KERN_VERSION;
    len = sizeof buf;
    if (sysctl(name, 2, buf, &len, (void *) 0, 0) < 0) {
	trace_log_tp(tp,
		     0,
		     LOG_INFO,
		     ("krt_symbols: sysctl(CTL_KERN, KERN_VERSION): %m"));
    } else {
	/* Set version */

	krt_version_kernel = task_mem_strdup(tp, buf);
	trace_tp(tp,
		 TR_KRT_SYMBOLS,
		 0,
		 ("krt_symbols: kernel version: %s\n",
		  krt_version_kernel));
    }

#ifdef	PROTO_INET
    name[0] = CTL_NET;
    name[1] = AF_INET;

    name[2] = IPPROTO_IP;
    name[3] = IPCTL_FORWARDING;
    len = sizeof value;
    if (sysctl(name, 4, (void *) &value, &len, (void *) 0, 0) < 0) {
	trace_log_tp(tp,
		     0,
		     LOG_INFO,
		     ("krt_symbols: sysctl(CTL_NET, AF_INET, IPPROTO_IP, IPCTL_FORWARDING): %m"));
    } else {
	inet_ipforwarding = value >= 1;
	trace_tp(tp,
		 TR_KRT_SYMBOLS,
		 0,
		 ("krt_symbols: IP forwarding: %u using %u\n",
		  value,
		  inet_ipforwarding));
    }

    name[2] = IPPROTO_UDP;
    name[3] = UDPCTL_CHECKSUM;
    len = sizeof value;
    if (sysctl(name, 4, (void *) &value, &len, (void *) 0, 0) < 0) {
	trace_log_tp(tp,
		     0,
		     LOG_INFO,
		     ("krt_symbols: sysctl(CTL_NET, AF_INET, IPPROTO_UDP, UDP_CHECKSUM): %m"));
    } else {
	inet_udpcksum = value != 0;
	trace_tp(tp,
		 TR_KRT_SYMBOLS,
		 0,
		 ("krt_symbols: UDP checksum: %u using %u\n",
		  value,
		  inet_udpcksum));
    }
#endif	/* PROTO_INET */
    
#ifdef	PROTO_INET6
    name[0] = CTL_NET;
    name[1] = AF_INET6;

    name[2] = IPPROTO_IP;
#ifdef	V6L1
#if	defined(SHIN)||defined(INRIA)
    name[3] = IP6CTL_FORWARDING;
#endif	/* SHIN || INRIA */
#if	defined(HYDRANGEA)
    name[3] = IPCTL_FORWARDING;
#endif	/* HYDRANGEA */
#else	/* V6L1 */
    name[3] = IP6CTL_FORWARDING;
#endif	/* V6L1 */
    len = sizeof value;
    if (sysctl(name, 4, (void *) &value, &len, (void *) 0, 0) < 0) {
	trace_log_tp(tp,
		     0,
		     LOG_INFO,
		     ("krt_symbols: sysctl(CTL_NET, AF_INET6, IPPROTO_IP, IP6CTL_FORWARDING): %m"));
    } else {
	inet6_ipforwarding = value >= 1;
	trace_tp(tp,
		 TR_KRT_SYMBOLS,
		 0,
		 ("krt_symbols: IPv6 forwarding: %u using %u\n",
		  value,
		  inet6_ipforwarding));
    }
#endif	/* PROTO_INET6 */

    trace_tp(tp,
	     TR_KRT_SYMBOLS,
	     0,
	     (NULL));

    return 0;
}
