/*
 * ntpdc_ops.c - subroutines which are called to perform operations by xntpdc
 */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <stdio.h>
#include <stddef.h>

#include "ntpdc.h"
#include "ntp_control.h"
#include "ntp_refclock.h"
#include "ntp_stdlib.h"

#include <ctype.h>
#ifdef HAVE_SYS_TIMEX_H
# include <sys/timex.h>
#endif
#if !defined(__bsdi__) && !defined(apollo)
#include <netinet/in.h>
#endif

#include <arpa/inet.h>

/*
 * Declarations for command handlers in here
 */
static	int	checkitems	P((int, FILE *));
static	int	checkitemsize	P((int, int));
static	int	check1item	P((int, FILE *));
static	void	peerlist	P((struct parse *, FILE *));
static	void	peers		P((struct parse *, FILE *));
static void	doconfig	P((struct parse *pcmd, FILE *fp, int mode, int refc));
static	void	dmpeers		P((struct parse *, FILE *));
static	void	dopeers		P((struct parse *, FILE *, int));
static	void	printpeer	P((struct info_peer *, FILE *));
static	void	showpeer	P((struct parse *, FILE *));
static	void	peerstats	P((struct parse *, FILE *));
static	void	loopinfo	P((struct parse *, FILE *));
static	void	sysinfo		P((struct parse *, FILE *));
static	void	sysstats	P((struct parse *, FILE *));
static	void	iostats		P((struct parse *, FILE *));
static	void	memstats	P((struct parse *, FILE *));
static	void	timerstats	P((struct parse *, FILE *));
static	void	addpeer		P((struct parse *, FILE *));
static	void	addserver	P((struct parse *, FILE *));
static	void	addrefclock	P((struct parse *, FILE *));
static	void	broadcast	P((struct parse *, FILE *));
static	void	doconfig	P((struct parse *, FILE *, int, int));
static	void	unconfig	P((struct parse *, FILE *));
static	void	set		P((struct parse *, FILE *));
static	void	sys_clear	P((struct parse *, FILE *));
static	void	doset		P((struct parse *, FILE *, int));
static	void	reslist		P((struct parse *, FILE *));
static	void	new_restrict	P((struct parse *, FILE *));
static	void	unrestrict	P((struct parse *, FILE *));
static	void	delrestrict	P((struct parse *, FILE *));
static	void	do_restrict	P((struct parse *, FILE *, int));
static	void	monlist		P((struct parse *, FILE *));
static	void	reset		P((struct parse *, FILE *));
static	void	preset		P((struct parse *, FILE *));
static	void	readkeys	P((struct parse *, FILE *));
static	void	trustkey	P((struct parse *, FILE *));
static	void	untrustkey	P((struct parse *, FILE *));
static	void	do_trustkey	P((struct parse *, FILE *, int));
static	void	authinfo	P((struct parse *, FILE *));
static	void	traps		P((struct parse *, FILE *));
static	void	addtrap		P((struct parse *, FILE *));
static	void	clrtrap		P((struct parse *, FILE *));
static	void	do_addclr_trap	P((struct parse *, FILE *, int));
static	void	requestkey	P((struct parse *, FILE *));
static	void	controlkey	P((struct parse *, FILE *));
static	void	do_changekey	P((struct parse *, FILE *, int));
static	void	ctlstats	P((struct parse *, FILE *));
static	void	clockstat	P((struct parse *, FILE *));
static	void	fudge		P((struct parse *, FILE *));
static	void	clkbug		P((struct parse *, FILE *));
static	void	kerninfo	P((struct parse *, FILE *));
static  void    get_if_stats    P((struct parse *, FILE *));
static  void    do_if_reload    P((struct parse *, FILE *));

/*
 * Commands we understand.  Ntpdc imports this.
 */
struct xcmd opcmds[] = {
	{ "listpeers",	peerlist,	{ OPT|IP_VERSION, NO, NO, NO },
	  { "-4|-6", "", "", "" },
	  "display list of peers the server knows about [IP Version]" },
	{ "peers",	peers,	{ OPT|IP_VERSION, NO, NO, NO },
	  { "-4|-6", "", "", "" },
	  "display peer summary information [IP Version]" },
	{ "dmpeers",	dmpeers,	{ OPT|IP_VERSION, NO, NO, NO },
	  { "-4|-6", "", "", "" },
	  "display peer summary info the way Dave Mills likes it (IP Version)" },
	{ "showpeer",	showpeer, 	{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD},
	  { "peer_address", "peer2_addr", "peer3_addr", "peer4_addr" },
	  "display detailed information for one or more peers" },
	{ "pstats",	peerstats,	{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD },
	  { "peer_address", "peer2_addr", "peer3_addr", "peer4_addr" },
	  "display statistical information for one or more peers" },
	{ "loopinfo",	loopinfo,	{ OPT|NTP_STR, NO, NO, NO },
	  { "oneline|multiline", "", "", "" },
	  "display loop filter information" },
	{ "sysinfo",	sysinfo,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display local server information" },
	{ "sysstats",	sysstats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display local server statistics" },
	{ "memstats",	memstats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display peer memory usage statistics" },
	{ "iostats",	iostats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display I/O subsystem statistics" },
	{ "timerstats",	timerstats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display event timer subsystem statistics" },
	{ "addpeer",	addpeer,	{ NTP_ADD, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "addr", "keyid", "version", "minpoll#|prefer|burst|iburst|'minpoll N'|'maxpoll N'|'keyid N'|'version N' ..." },
	  "configure a new peer association" },
	{ "addserver",	addserver,	{ NTP_ADD, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "addr", "keyid", "version", "minpoll#|prefer|burst|iburst|'minpoll N'|'maxpoll N'|'keyid N'|'version N' ..." },
	  "configure a new server" },
	{ "addrefclock",addrefclock,	{ NTP_ADD, OPT|NTP_UINT, OPT|NTP_STR, OPT|NTP_STR },
	  { "addr", "mode", "minpoll|prefer", "minpoll|prefer" },
	  "configure a new server" },
	{ "broadcast",	broadcast,	{ NTP_ADD, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "addr", "keyid", "version", "minpoll" },
	  "configure broadcasting time service" },
	{ "unconfig",	unconfig,	{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD },
	  { "peer_address", "peer2_addr", "peer3_addr", "peer4_addr" },
	  "unconfigure existing peer assocations" },
	{ "enable",	set,		{ NTP_STR, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "auth|bclient|monitor|pll|kernel|stats", "...", "...", "..." },
	  "set a system flag (auth, bclient, monitor, pll, kernel, stats)" },
        { "disable",	sys_clear,      { NTP_STR, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "auth|bclient|monitor|pll|kernel|stats", "...", "...", "..." },
	  "clear a system flag (auth, bclient, monitor, pll, kernel, stats)" },
	{ "reslist",	reslist,	{OPT|IP_VERSION, NO, NO, NO },
	  { "-4|-6", "", "", "" },
	  "display the server's restrict list" },
	{ "restrict",	new_restrict,	{ NTP_ADD, NTP_ADD, NTP_STR, OPT|NTP_STR },
	  { "address", "mask",
	    "ntpport|ignore|noserve|notrust|noquery|nomodify|nopeer|version|kod",
	    "..." },
	  "create restrict entry/add flags to entry" },
	{ "unrestrict", unrestrict,	{ NTP_ADD, NTP_ADD, NTP_STR, OPT|NTP_STR },
	  { "address", "mask",
	    "ntpport|ignore|noserve|notrust|noquery|nomodify|nopeer|version|kod",
	    "..." },
	  "remove flags from a restrict entry" },
	{ "delrestrict", delrestrict,	{ NTP_ADD, NTP_ADD, OPT|NTP_STR, NO },
	  { "address", "mask", "ntpport", "" },
	  "delete a restrict entry" },
	{ "monlist",	monlist,	{ OPT|NTP_INT, NO, NO, NO },
	  { "version", "", "", "" },
	  "display data the server's monitor routines have collected" },
	{ "reset",	reset,		{ NTP_STR, OPT|NTP_STR, OPT|NTP_STR, OPT|NTP_STR },
	  { "io|sys|mem|timer|auth|allpeers", "...", "...", "..." },
	  "reset various subsystem statistics counters" },
	{ "preset",	preset,		{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD },
	  { "peer_address", "peer2_addr", "peer3_addr", "peer4_addr" },
	  "reset stat counters associated with particular peer(s)" },
	{ "readkeys",	readkeys,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "request a reread of the keys file and re-init of system keys" },
	{ "trustedkey",	trustkey,	{ NTP_UINT, OPT|NTP_UINT, OPT|NTP_UINT, OPT|NTP_UINT },
	  { "keyid", "keyid", "keyid", "keyid" },
	  "add one or more key ID's to the trusted list" },
	{ "untrustedkey", untrustkey,	{ NTP_UINT, OPT|NTP_UINT, OPT|NTP_UINT, OPT|NTP_UINT },
	  { "keyid", "keyid", "keyid", "keyid" },
	  "remove one or more key ID's from the trusted list" },
	{ "authinfo",	authinfo,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display the state of the authentication code" },
	{ "traps",	traps,		{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display the traps set in the server" },
	{ "addtrap",	addtrap,	{ NTP_ADD, OPT|NTP_UINT, OPT|NTP_ADD, NO },
	  { "address", "port", "interface", "" },
	  "configure a trap in the server" },
	{ "clrtrap",	clrtrap,	{ NTP_ADD, OPT|NTP_UINT, OPT|NTP_ADD, NO },
	  { "address", "port", "interface", "" },
	  "remove a trap (configured or otherwise) from the server" },
	{ "requestkey",	requestkey,	{ NTP_UINT, NO, NO, NO },
	  { "keyid", "", "", "" },
	  "change the keyid the server uses to authenticate requests" },
	{ "controlkey",	controlkey,	{ NTP_UINT, NO, NO, NO },
	  { "keyid", "", "", "" },
	  "change the keyid the server uses to authenticate control messages" },
	{ "ctlstats",	ctlstats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display packet count statistics from the control module" },
	{ "clockstat",	clockstat,	{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD },
	  { "address", "address", "address", "address" },
	  "display clock status information" },
	{ "fudge",	fudge,		{ NTP_ADD, NTP_STR, NTP_STR, NO },
	  { "address", "time1|time2|val1|val2|flags", "value", "" },
	  "set/change one of a clock's fudge factors" },
	{ "clkbug",	clkbug,		{ NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD, OPT|NTP_ADD },
	  { "address", "address", "address", "address" },
	  "display clock debugging information" },
	{ "kerninfo",	kerninfo,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "display the kernel pll/pps variables" },
	{ "ifstats",	get_if_stats,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "list interface statistics" },
	{ "ifreload",	do_if_reload,	{ NO, NO, NO, NO },
	  { "", "", "", "" },
	  "reload interface configuration" },
	{ 0,		0,		{ NO, NO, NO, NO },
	  { "", "", "", "" }, "" }
};

/*
 * For quick string comparisons
 */
#define	STREQ(a, b)	(*(a) == *(b) && strcmp((a), (b)) == 0)


/*
 * checkitems - utility to print a message if no items were returned
 */
static int
checkitems(
	int items,
	FILE *fp
	)
{
	if (items == 0) {
		(void) fprintf(fp, "No data returned in response to query\n");
		return 0;
	}
	return 1;
}


/*
 * checkitemsize - utility to print a message if the item size is wrong
 */
static int
checkitemsize(
	int itemsize,
	int expected
	)
{
	if (itemsize != expected) {
		(void) fprintf(stderr,
			       "***Incorrect item size returned by remote host (%d should be %d)\n",
			       itemsize, expected);
		return 0;
	}
	return 1;
}


/*
 * check1item - check to make sure we have exactly one item
 */
static int
check1item(
	int items,
	FILE *fp
	)
{
	if (items == 0) {
		(void) fprintf(fp, "No data returned in response to query\n");
		return 0;
	}
	if (items > 1) {
		(void) fprintf(fp, "Expected one item in response, got %d\n",
			       items);
		return 0;
	}
	return 1;
}



/*
 * peerlist - get a short list of peers
 */
/*ARGSUSED*/
static void
peerlist(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_peer_list *plist;
	struct sockaddr_storage paddr;
	int items;
	int itemsize;
	int res;

again:
	res = doquery(impl_ver, REQ_PEER_LIST, 0, 0, 0, (char *)NULL, &items,
		      &itemsize, (void *)&plist, 0, 
		      sizeof(struct info_peer_list));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!checkitems(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_peer_list)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_peer_list)))
	    return;

	while (items > 0) {
		memset((char *)&paddr, 0, sizeof(paddr));
		if (plist->v6_flag != 0) {
			GET_INADDR6(paddr) = plist->addr6;
			paddr.ss_family = AF_INET6;
		} else {
			GET_INADDR(paddr) = plist->addr;
			paddr.ss_family = AF_INET;
		}
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
		paddr.ss_len = SOCKLEN(&paddr);
#endif
		if ((pcmd->nargs == 0) ||
		    ((pcmd->argval->ival == 6) && (plist->v6_flag != 0)) ||
		    ((pcmd->argval->ival == 4) && (plist->v6_flag == 0)))
			(void) fprintf(fp, "%-9s %s\n",
				modetoa(plist->hmode),
				nntohost(&paddr));
		plist++;
		items--;
	}
}


/*
 * peers - show peer summary
 */
static void
peers(
	struct parse *pcmd,
	FILE *fp
	)
{
	dopeers(pcmd, fp, 0);
}

/*
 * dmpeers - show peer summary, Dave Mills style
 */
static void
dmpeers(
	struct parse *pcmd,
	FILE *fp
	)
{
	dopeers(pcmd, fp, 1);
}


/*
 * peers - show peer summary
 */
/*ARGSUSED*/
static void
dopeers(
	struct parse *pcmd,
	FILE *fp,
	int dmstyle
	)
{
	struct info_peer_summary *plist;
	struct sockaddr_storage dstadr;
	struct sockaddr_storage srcadr;
	int items;
	int itemsize;
	int ntp_poll;
	int res;
	int c;
	l_fp tempts;

again:
	res = doquery(impl_ver, REQ_PEER_LIST_SUM, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&plist, 0, 
		      sizeof(struct info_peer_summary));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!checkitems(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_peer_summary)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_peer_summary)))
		return;

	(void) fprintf(fp,
		       "     remote           local      st poll reach  delay   offset    disp\n");
	(void) fprintf(fp,
		       "=======================================================================\n");
	while (items > 0) {
		if (!dmstyle) {
			if (plist->flags & INFO_FLAG_SYSPEER)
			    c = '*';
			else if (plist->hmode == MODE_ACTIVE)
			    c = '+';
			else if (plist->hmode == MODE_PASSIVE)
			    c = '-';
			else if (plist->hmode == MODE_CLIENT)
			    c = '=';
			else if (plist->hmode == MODE_BROADCAST)
			    c = '^';
			else if (plist->hmode == MODE_BCLIENT)
			    c = '~';
			else
			    c = ' ';
		} else {
			if (plist->flags & INFO_FLAG_SYSPEER)
			    c = '*';
			else if (plist->flags & INFO_FLAG_SHORTLIST)
			    c = '+';
			else if (plist->flags & INFO_FLAG_SEL_CANDIDATE)
			    c = '.';
			else
			    c = ' ';
		}
		NTOHL_FP(&(plist->offset), &tempts);
		ntp_poll = 1<<max(min3(plist->ppoll, plist->hpoll, NTP_MAXPOLL),
				  NTP_MINPOLL);
		memset((char *)&dstadr, 0, sizeof(dstadr));
		memset((char *)&srcadr, 0, sizeof(srcadr));
		if (plist->v6_flag != 0) {
			GET_INADDR6(dstadr) = plist->dstadr6;
			GET_INADDR6(srcadr) = plist->srcadr6;
			srcadr.ss_family = AF_INET6;
			dstadr.ss_family = AF_INET6;
		} else {
			GET_INADDR(dstadr) = plist->dstadr;
			GET_INADDR(srcadr) = plist->srcadr;
			srcadr.ss_family = AF_INET;
			dstadr.ss_family = AF_INET;
		}
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
		srcadr.ss_len = SOCKLEN(&srcadr);
		dstadr.ss_len = SOCKLEN(&dstadr);
#endif
		if ((pcmd->nargs == 0) ||
		    ((pcmd->argval->ival == 6) && (plist->v6_flag != 0)) ||
		    ((pcmd->argval->ival == 4) && (plist->v6_flag == 0)))
			(void) fprintf(fp,
			    "%c%-15.15s %-15.15s %2d %4d  %3o %7.7s %9.9s %7.7s\n",
			    c, nntohost(&srcadr), stoa(&dstadr),
			    plist->stratum, ntp_poll, plist->reach,
			    fptoa(NTOHS_FP(plist->delay), 5),
			    lfptoa(&tempts, 6),
			    ufptoa(NTOHS_FP(plist->dispersion), 5));
		plist++;
		items--;
	}
}

/* Convert a refid & stratum (in host order) to a string */
static char*
refid_string(
	u_int32 refid,
	int stratum
	)
{
	if (stratum <= 1) {
		static char junk[5];
		junk[4] = 0;
		memmove(junk, (char *)&refid, 4);
		return junk;
	}

	return numtoa(refid);
}

static void
print_pflag(
	    FILE *fp,
	    u_int32 flags
	    )
{
     const char *str;

     if (flags == 0) {
		(void) fprintf(fp, " none\n");
	} else {
		str = "";
		if (flags & INFO_FLAG_SYSPEER) {
			(void) fprintf(fp, " system_peer");
			str = ",";
		}
		if (flags & INFO_FLAG_CONFIG) {
			(void) fprintf(fp, "%s config", str);
			str = ",";
		}
		if (flags & INFO_FLAG_REFCLOCK) {
			(void) fprintf(fp, "%s refclock", str);
			str = ",";
		}
		if (flags & INFO_FLAG_AUTHENABLE) {
			(void) fprintf(fp, "%s auth", str);
			str = ",";
		}
		if (flags & INFO_FLAG_BCLIENT) {
			(void) fprintf(fp, "%s bclient", str);
			str = ",";
		}
		if (flags & INFO_FLAG_PREFER) {
			(void) fprintf(fp, "%s prefer", str);
			str = ",";
		}
		if (flags & INFO_FLAG_IBURST) {
			(void) fprintf(fp, "%s iburst", str);
			str = ",";
		}
		if (flags & INFO_FLAG_BURST) {
			(void) fprintf(fp, "%s burst", str);
		}
		(void) fprintf(fp, "\n");
	}
}
/*
 * printpeer - print detail information for a peer
 */
static void
printpeer(
	register struct info_peer *pp,
	FILE *fp
	)
{
	register int i;
	l_fp tempts;
	struct sockaddr_storage srcadr, dstadr;
	
	memset((char *)&srcadr, 0, sizeof(srcadr));
	memset((char *)&dstadr, 0, sizeof(dstadr));
	if (pp->v6_flag != 0) {
		srcadr.ss_family = AF_INET6;
		dstadr.ss_family = AF_INET6;
		GET_INADDR6(srcadr) = pp->srcadr6;
		GET_INADDR6(dstadr) = pp->dstadr6;
	} else {
		srcadr.ss_family = AF_INET;
		dstadr.ss_family = AF_INET;
		GET_INADDR(srcadr) = pp->srcadr;
		GET_INADDR(dstadr) = pp->dstadr;
	}
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
	srcadr.ss_len = SOCKLEN(&srcadr);
	dstadr.ss_len = SOCKLEN(&dstadr);
#endif
	(void) fprintf(fp, "remote %s, local %s\n",
		       stoa(&srcadr), stoa(&dstadr));
	(void) fprintf(fp, "hmode %s, pmode %s, stratum %d, precision %d\n",
		       modetoa(pp->hmode), modetoa(pp->pmode),
		       pp->stratum, pp->precision);
	
	(void) fprintf(fp,
		       "leap %c%c, refid [%s], rootdistance %s, rootdispersion %s\n",
		       pp->leap & 0x2 ? '1' : '0',
		       pp->leap & 0x1 ? '1' : '0',
		       refid_string(pp->refid, pp->stratum), fptoa(NTOHS_FP(pp->rootdelay), 5),
		       ufptoa(NTOHS_FP(pp->rootdispersion), 5));
	
	(void) fprintf(fp,
		       "ppoll %d, hpoll %d, keyid %lu, version %d, association %u\n",
		       pp->ppoll, pp->hpoll, (u_long)pp->keyid, pp->version, ntohs(pp->associd));

	(void) fprintf(fp,
		       "reach %03o, unreach %d, flash 0x%04x, ",
		       pp->reach, pp->unreach, pp->flash2);

	(void) fprintf(fp, "boffset %s, ttl/mode %d\n",
		       fptoa(NTOHS_FP(pp->estbdelay), 5), pp->ttl);
	
	(void) fprintf(fp, "timer %lds, flags", (long)ntohl(pp->timer));
	print_pflag(fp, pp->flags); 

	NTOHL_FP(&pp->reftime, &tempts);
	(void) fprintf(fp, "reference time:      %s\n",
		       prettydate(&tempts));
	NTOHL_FP(&pp->org, &tempts);
	(void) fprintf(fp, "originate timestamp: %s\n",
		       prettydate(&tempts));
	NTOHL_FP(&pp->rec, &tempts);
	(void) fprintf(fp, "receive timestamp:   %s\n",
		       prettydate(&tempts));
	NTOHL_FP(&pp->xmt, &tempts);
	(void) fprintf(fp, "transmit timestamp:  %s\n",
		       prettydate(&tempts));
	
	(void) fprintf(fp, "filter delay: ");
	for (i = 0; i < NTP_SHIFT; i++) {
		(void) fprintf(fp, " %-8.8s",
			       fptoa(NTOHS_FP(pp->filtdelay[i]), 5));
		if (i == (NTP_SHIFT>>1)-1)
		    (void) fprintf(fp, "\n              ");
	}
	(void) fprintf(fp, "\n");

	(void) fprintf(fp, "filter offset:");
	for (i = 0; i < NTP_SHIFT; i++) {
		NTOHL_FP(&pp->filtoffset[i], &tempts);
		(void) fprintf(fp, " %-8.8s", lfptoa(&tempts, 6));
		if (i == (NTP_SHIFT>>1)-1)
		    (void) fprintf(fp, "\n              ");
	}
	(void) fprintf(fp, "\n");

	(void) fprintf(fp, "filter order: ");
	for (i = 0; i < NTP_SHIFT; i++) {
		(void) fprintf(fp, " %-8d", pp->order[i]);
		if (i == (NTP_SHIFT>>1)-1)
		    (void) fprintf(fp, "\n              ");
	}
	(void) fprintf(fp, "\n");
	

	NTOHL_FP(&pp->offset, &tempts);
	(void) fprintf(fp,
		       "offset %s, delay %s, error bound %s, filter error %s\n",
		       lfptoa(&tempts, 6), fptoa(NTOHS_FP(pp->delay), 5),
		       ufptoa(NTOHS_FP(pp->dispersion), 5),
		       ufptoa(NTOHS_FP(pp->selectdisp), 5));
}


/*
 * showpeer - show detailed information for a peer
 */
static void
showpeer(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_peer *pp;
	/* 4 is the maximum number of peers which will fit in a packet */
	struct info_peer_list *pl, plist[min(MAXARGS, 4)];
	int qitems;
	int items;
	int itemsize;
	int res;
	int sendsize;

again:
	if (impl_ver == IMPL_XNTPD)
		sendsize = sizeof(struct info_peer_list);
	else
		sendsize = v4sizeof(struct info_peer_list);

	for (qitems = 0, pl = plist; qitems < min(pcmd->nargs, 4); qitems++) {
		if (pcmd->argval[qitems].netnum.ss_family == AF_INET) {
			pl->addr = GET_INADDR(pcmd->argval[qitems].netnum);
			if (impl_ver == IMPL_XNTPD)
				pl->v6_flag = 0;
		} else {
			if (impl_ver == IMPL_XNTPD_OLD) {
				fprintf(stderr,
				    "***Server doesn't understand IPv6 addresses\n");
				return;
			}
			pl->addr6 = GET_INADDR6(pcmd->argval[qitems].netnum);
			pl->v6_flag = 1;
		}
		pl->port = (u_short)s_port;
		pl->hmode = pl->flags = 0;
		pl = (struct info_peer_list *)((char *)pl + sendsize);
	}

	res = doquery(impl_ver, REQ_PEER_INFO, 0, qitems,
		      sendsize, (char *)plist, &items,
		      &itemsize, (void *)&pp, 0, sizeof(struct info_peer));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!checkitems(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_peer)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_peer)))
	    return;

	while (items-- > 0) {
		printpeer(pp, fp);
		if (items > 0)
		    (void) fprintf(fp, "\n");
		pp++;
	}
}


/*
 * peerstats - return statistics for a peer
 */
static void
peerstats(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_peer_stats *pp;
	/* 4 is the maximum number of peers which will fit in a packet */
	struct info_peer_list *pl, plist[min(MAXARGS, 4)];
	struct sockaddr_storage src, dst;
	int qitems;
	int items;
	int itemsize;
	int res;
	int sendsize;

again:
	if (impl_ver == IMPL_XNTPD)
		sendsize = sizeof(struct info_peer_list);
	else
		sendsize = v4sizeof(struct info_peer_list);

	memset((char *)plist, 0, sizeof(struct info_peer_list) * min(MAXARGS, 4));
	for (qitems = 0, pl = plist; qitems < min(pcmd->nargs, 4); qitems++) {
		if (pcmd->argval[qitems].netnum.ss_family == AF_INET) {
			pl->addr = GET_INADDR(pcmd->argval[qitems].netnum);
			if (impl_ver == IMPL_XNTPD)
				pl->v6_flag = 0;
		} else {
			if (impl_ver == IMPL_XNTPD_OLD) {
				fprintf(stderr,
				    "***Server doesn't understand IPv6 addresses\n");
				return;
			}
			pl->addr6 = GET_INADDR6(pcmd->argval[qitems].netnum);
			pl->v6_flag = 1;
		}
		pl->port = (u_short)s_port;
		pl->hmode = plist[qitems].flags = 0;
		pl = (struct info_peer_list *)((char *)pl + sendsize);
	}

	res = doquery(impl_ver, REQ_PEER_STATS, 0, qitems,
		      sendsize, (char *)plist, &items,
		      &itemsize, (void *)&pp, 0, 
		      sizeof(struct info_peer_stats));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!checkitems(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_peer_stats)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_peer_stats)))
	    return;

	while (items-- > 0) {
		memset((char *)&src, 0, sizeof(src));
		memset((char *)&dst, 0, sizeof(dst));
		if (pp->v6_flag != 0) {
			GET_INADDR6(src) = pp->srcadr6;
			GET_INADDR6(dst) = pp->dstadr6;
			src.ss_family = AF_INET6;
			dst.ss_family = AF_INET6;
		} else {
			GET_INADDR(src) = pp->srcadr;
			GET_INADDR(dst) = pp->dstadr;
			src.ss_family = AF_INET;
			dst.ss_family = AF_INET;
		}
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
		src.ss_len = SOCKLEN(&src);
		dst.ss_len = SOCKLEN(&dst);
#endif
		(void) fprintf(fp, "remote host:          %s\n",
			       nntohost(&src));
		(void) fprintf(fp, "local interface:      %s\n",
			       stoa(&dst));
		(void) fprintf(fp, "time last received:   %lds\n",
			       (long)ntohl(pp->timereceived));
		(void) fprintf(fp, "time until next send: %lds\n",
			       (long)ntohl(pp->timetosend));
		(void) fprintf(fp, "reachability change:  %lds\n",
			       (long)ntohl(pp->timereachable));
		(void) fprintf(fp, "packets sent:         %ld\n",
			       (long)ntohl(pp->sent));
		(void) fprintf(fp, "packets received:     %ld\n",
			       (long)ntohl(pp->processed));
		(void) fprintf(fp, "bad authentication:   %ld\n",
			       (long)ntohl(pp->badauth));
		(void) fprintf(fp, "bogus origin:         %ld\n",
			       (long)ntohl(pp->bogusorg));
		(void) fprintf(fp, "duplicate:            %ld\n",
			       (long)ntohl(pp->oldpkt));
		(void) fprintf(fp, "bad dispersion:       %ld\n",
			       (long)ntohl(pp->seldisp));
		(void) fprintf(fp, "bad reference time:   %ld\n",
			       (long)ntohl(pp->selbroken));
		(void) fprintf(fp, "candidate order:      %d\n",
			       (int)pp->candidate);
		if (items > 0)
		    (void) fprintf(fp, "\n");
		(void) fprintf(fp, "flags:	");
		print_pflag(fp, ntohs(pp->flags));
	        pp++;
	}
}


/*
 * loopinfo - show loop filter information
 */
static void
loopinfo(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_loop *il;
	int items;
	int itemsize;
	int oneline = 0;
	int res;
	l_fp tempts;

	if (pcmd->nargs > 0) {
		if (STREQ(pcmd->argval[0].string, "oneline"))
		    oneline = 1;
		else if (STREQ(pcmd->argval[0].string, "multiline"))
		    oneline = 0;
		else {
			(void) fprintf(stderr, "How many lines?\n");
			return;
		}
	}

again:
	res = doquery(impl_ver, REQ_LOOP_INFO, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&il, 0, 
		      sizeof(struct info_loop));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_loop)))
	    return;

	if (oneline) {
		l_fp temp2ts;

		NTOHL_FP(&il->last_offset, &tempts);
		NTOHL_FP(&il->drift_comp, &temp2ts);

		(void) fprintf(fp,
			       "offset %s, frequency %s, time_const %ld, watchdog %ld\n",
			       lfptoa(&tempts, 6),
			       lfptoa(&temp2ts, 3),
			       (long)(int32_t)ntohl((u_long)il->compliance),
			       (u_long)ntohl((u_long)il->watchdog_timer));
	} else {
		NTOHL_FP(&il->last_offset, &tempts);
		(void) fprintf(fp, "offset:               %s s\n",
			       lfptoa(&tempts, 6));
		NTOHL_FP(&il->drift_comp, &tempts);
		(void) fprintf(fp, "frequency:            %s ppm\n",
			       lfptoa(&tempts, 3));
		(void) fprintf(fp, "poll adjust:          %ld\n",
			       (long)(int32_t)ntohl(il->compliance));
		(void) fprintf(fp, "watchdog timer:       %ld s\n",
			       (u_long)ntohl(il->watchdog_timer));
	}
}


/*
 * sysinfo - show current system state
 */
/*ARGSUSED*/
static void
sysinfo(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_sys *is;
	struct sockaddr_storage peeraddr;
	int items;
	int itemsize;
	int res;
	l_fp tempts;

again:
	res = doquery(impl_ver, REQ_SYS_INFO, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&is, 0,
		      sizeof(struct info_sys));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_sys)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_sys)))
	    return;

	memset((char *)&peeraddr, 0, sizeof(peeraddr));
	if (is->v6_flag != 0) {
		GET_INADDR6(peeraddr) = is->peer6;
		peeraddr.ss_family = AF_INET6;
	} else {
		GET_INADDR(peeraddr) = is->peer;
		peeraddr.ss_family = AF_INET;
	}
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
	peeraddr.ss_len = SOCKLEN(&peeraddr);
#endif
	(void) fprintf(fp, "system peer:          %s\n", nntohost(&peeraddr));
	(void) fprintf(fp, "system peer mode:     %s\n", modetoa(is->peer_mode));
	(void) fprintf(fp, "leap indicator:       %c%c\n",
		       is->leap & 0x2 ? '1' : '0',
		       is->leap & 0x1 ? '1' : '0');
	(void) fprintf(fp, "stratum:              %d\n", (int)is->stratum);
	(void) fprintf(fp, "precision:            %d\n", (int)is->precision);
	(void) fprintf(fp, "root distance:        %s s\n",
		       fptoa(NTOHS_FP(is->rootdelay), 5));
	(void) fprintf(fp, "root dispersion:      %s s\n",
		       ufptoa(NTOHS_FP(is->rootdispersion), 5));
	(void) fprintf(fp, "reference ID:         [%s]\n",
		       refid_string(is->refid, is->stratum));
	NTOHL_FP(&is->reftime, &tempts);
	(void) fprintf(fp, "reference time:       %s\n", prettydate(&tempts));

	(void) fprintf(fp, "system flags:         ");
	if ((is->flags & (INFO_FLAG_BCLIENT | INFO_FLAG_AUTHENABLE |
	    INFO_FLAG_NTP | INFO_FLAG_KERNEL| INFO_FLAG_CAL |
	    INFO_FLAG_PPS_SYNC | INFO_FLAG_MONITOR | INFO_FLAG_FILEGEN)) == 0) {
		(void) fprintf(fp, "none\n");
	} else {
		if (is->flags & INFO_FLAG_BCLIENT)
		    (void) fprintf(fp, "bclient ");
		if (is->flags & INFO_FLAG_AUTHENTICATE)
		    (void) fprintf(fp, "auth ");
		if (is->flags & INFO_FLAG_MONITOR)
		    (void) fprintf(fp, "monitor ");
		if (is->flags & INFO_FLAG_NTP)
		    (void) fprintf(fp, "ntp ");
		if (is->flags & INFO_FLAG_KERNEL)
		    (void) fprintf(fp, "kernel ");
		if (is->flags & INFO_FLAG_FILEGEN)
		    (void) fprintf(fp, "stats ");
		if (is->flags & INFO_FLAG_CAL)
		    (void) fprintf(fp, "calibrate ");
		if (is->flags & INFO_FLAG_PPS_SYNC)
		    (void) fprintf(fp, "pps ");
		(void) fprintf(fp, "\n");
	}
	(void) fprintf(fp, "jitter:               %s s\n",
		       fptoa(ntohl(is->frequency), 6));
	(void) fprintf(fp, "stability:            %s ppm\n",
		       ufptoa(ntohl(is->stability), 3));
	(void) fprintf(fp, "broadcastdelay:       %s s\n",
		       fptoa(NTOHS_FP(is->bdelay), 6));
	NTOHL_FP(&is->authdelay, &tempts);
	(void) fprintf(fp, "authdelay:            %s s\n", lfptoa(&tempts, 6));
}


/*
 * sysstats - print system statistics
 */
/*ARGSUSED*/
static void
sysstats(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_sys_stats *ss;
	int items;
	int itemsize;
	int res;

again:
	res = doquery(impl_ver, REQ_SYS_STATS, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&ss, 0, 
		      sizeof(struct info_sys_stats));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (itemsize != sizeof(struct info_sys_stats) &&
	    itemsize != sizeof(struct old_info_sys_stats)) {
		/* issue warning according to new structure size */
		checkitemsize(itemsize, sizeof(struct info_sys_stats));
		return;
	}
	fprintf(fp, "time since restart:     %ld\n",
	       (u_long)ntohl(ss->timeup));
	fprintf(fp, "time since reset:       %ld\n",
		(u_long)ntohl(ss->timereset));
        fprintf(fp, "packets received:       %ld\n",
		(u_long)ntohl(ss->received));
	fprintf(fp, "packets processed:      %ld\n",
		(u_long)ntohl(ss->processed));
	fprintf(fp, "current version:        %ld\n",
	       (u_long)ntohl(ss->newversionpkt));
	fprintf(fp, "previous version:       %ld\n",
	       (u_long)ntohl(ss->oldversionpkt));
	fprintf(fp, "bad version:            %ld\n",
	       (u_long)ntohl(ss->unknownversion));
	fprintf(fp, "access denied:          %ld\n",
		(u_long)ntohl(ss->denied));
	fprintf(fp, "bad length or format:   %ld\n",
	       (u_long)ntohl(ss->badlength));
	fprintf(fp, "bad authentication:     %ld\n",
	       (u_long)ntohl(ss->badauth));
	if (itemsize != sizeof(struct info_sys_stats))
	    return;
	
	fprintf(fp, "rate exceeded:          %ld\n",
	       (u_long)ntohl(ss->limitrejected));
}



/*
 * iostats - print I/O statistics
 */
/*ARGSUSED*/
static void
iostats(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_io_stats *io;
	int items;
	int itemsize;
	int res;

again:
	res = doquery(impl_ver, REQ_IO_STATS, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&io, 0, 
		      sizeof(struct info_io_stats));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_io_stats)))
	    return;

	(void) fprintf(fp, "time since reset:     %ld\n",
		       (u_long)ntohl(io->timereset));
	(void) fprintf(fp, "receive buffers:      %d\n",
		       ntohs(io->totalrecvbufs));
	(void) fprintf(fp, "free receive buffers: %d\n",
		       ntohs(io->freerecvbufs));
	(void) fprintf(fp, "used receive buffers: %d\n",
		       ntohs(io->fullrecvbufs));
	(void) fprintf(fp, "low water refills:    %d\n",
		       ntohs(io->lowwater));
	(void) fprintf(fp, "dropped packets:      %ld\n",
		       (u_long)ntohl(io->dropped));
	(void) fprintf(fp, "ignored packets:      %ld\n",
		       (u_long)ntohl(io->ignored));
	(void) fprintf(fp, "received packets:     %ld\n",
		       (u_long)ntohl(io->received));
	(void) fprintf(fp, "packets sent:         %ld\n",
		       (u_long)ntohl(io->sent));
	(void) fprintf(fp, "packets not sent:     %ld\n",
		       (u_long)ntohl(io->notsent));
	(void) fprintf(fp, "interrupts handled:   %ld\n",
		       (u_long)ntohl(io->interrupts));
	(void) fprintf(fp, "received by int:      %ld\n",
		       (u_long)ntohl(io->int_received));
}


/*
 * memstats - print peer memory statistics
 */
/*ARGSUSED*/
static void
memstats(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_mem_stats *mem;
	int i;
	int items;
	int itemsize;
	int res;

again:
	res = doquery(impl_ver, REQ_MEM_STATS, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&mem, 0, 
		      sizeof(struct info_mem_stats));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_mem_stats)))
	    return;

	(void) fprintf(fp, "time since reset:     %ld\n",
		       (u_long)ntohl(mem->timereset));
	(void) fprintf(fp, "total peer memory:    %d\n",
		       ntohs(mem->totalpeermem));
	(void) fprintf(fp, "free peer memory:     %d\n",
		       ntohs(mem->freepeermem));
	(void) fprintf(fp, "calls to findpeer:    %ld\n",
		       (u_long)ntohl(mem->findpeer_calls));
	(void) fprintf(fp, "new peer allocations: %ld\n",
		       (u_long)ntohl(mem->allocations));
	(void) fprintf(fp, "peer demobilizations: %ld\n",
		       (u_long)ntohl(mem->demobilizations));

	(void) fprintf(fp, "hash table counts:   ");
	for (i = 0; i < NTP_HASH_SIZE; i++) {
		(void) fprintf(fp, "%4d", (int)mem->hashcount[i]);
		if ((i % 8) == 7 && i != (NTP_HASH_SIZE-1)) {
			(void) fprintf(fp, "\n                     ");
		}
	}
	(void) fprintf(fp, "\n");
}



/*
 * timerstats - print timer statistics
 */
/*ARGSUSED*/
static void
timerstats(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_timer_stats *tim;
	int items;
	int itemsize;
	int res;

again:
	res = doquery(impl_ver, REQ_TIMER_STATS, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&tim, 0, 
		      sizeof(struct info_timer_stats));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!check1item(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_timer_stats)))
	    return;

	(void) fprintf(fp, "time since reset:  %ld\n",
		       (u_long)ntohl(tim->timereset));
	(void) fprintf(fp, "alarms handled:    %ld\n",
		       (u_long)ntohl(tim->alarms));
	(void) fprintf(fp, "alarm overruns:    %ld\n",
		       (u_long)ntohl(tim->overflows));
	(void) fprintf(fp, "calls to transmit: %ld\n",
		       (u_long)ntohl(tim->xmtcalls));
}


/*
 * addpeer - configure an active mode association
 */
static void
addpeer(
	struct parse *pcmd,
	FILE *fp
	)
{
	doconfig(pcmd, fp, MODE_ACTIVE, 0);
}


/*
 * addserver - configure a client mode association
 */
static void
addserver(
	struct parse *pcmd,
	FILE *fp
	)
{
	doconfig(pcmd, fp, MODE_CLIENT, 0);
}

/*
 * addrefclock - configure a reference clock association
 */
static void
addrefclock(
	struct parse *pcmd,
	FILE *fp
	)
{
	doconfig(pcmd, fp, MODE_CLIENT, 1);
}

/*
 * broadcast - configure a broadcast mode association
 */
static void
broadcast(
	struct parse *pcmd,
	FILE *fp
	)
{
	doconfig(pcmd, fp, MODE_BROADCAST, 0);
}


/*
 * config - configure a new peer association
 */
static void
doconfig(
	struct parse *pcmd,
	FILE *fp,
	int mode,
        int refc
	)
{
	struct conf_peer cpeer;
	int items;
	int itemsize;
	char *dummy;
	u_long keyid;
	u_int version;
	u_char minpoll;
	u_char maxpoll;
	u_int flags;
	u_char cmode;
	int res;
	int sendsize;
	int numtyp;

again:
	keyid = 0;
	version = 3;
	flags = 0;
	res = 0;
	cmode = 0;
	minpoll = NTP_MINDPOLL;
	maxpoll = NTP_MAXDPOLL;
	numtyp = 1;
	if (refc)
	     numtyp = 5;

	if (impl_ver == IMPL_XNTPD)
		sendsize = sizeof(struct conf_peer);
	else
		sendsize = v4sizeof(struct conf_peer);

	items = 1;
	while (pcmd->nargs > items) {
		if (STREQ(pcmd->argval[items].string, "prefer"))
		    flags |= CONF_FLAG_PREFER;
		else if (STREQ(pcmd->argval[items].string, "burst"))
		    flags |= CONF_FLAG_BURST;
		else if (STREQ(pcmd->argval[items].string, "dynamic"))
		    (void) fprintf(fp, "Warning: the \"dynamic\" keyword has been obsoleted and will be removed in the next release\n"); 
		else if (STREQ(pcmd->argval[items].string, "iburst"))
		    flags |= CONF_FLAG_IBURST;
		else if (!refc && STREQ(pcmd->argval[items].string, "keyid"))
		    numtyp = 1;
		else if (!refc && STREQ(pcmd->argval[items].string, "version"))
		    numtyp = 2;
		else if (STREQ(pcmd->argval[items].string, "minpoll"))
		    numtyp = 3;
		else if (STREQ(pcmd->argval[items].string, "maxpoll"))
		    numtyp = 4;
		else {
		        long val;
			if (!atoint(pcmd->argval[items].string, &val))
			     numtyp = 0;				  
			switch (numtyp) {
			case 1:
			     keyid = val;
			     numtyp = 2;				  
			     break;
			     
			case 2:
			     version = (u_int) val;
			     numtyp = 0;				  
			     break;

			case 3:
			     minpoll = (u_char)val;
			     numtyp = 0;				  
			     break;

			case 4:
			     maxpoll = (u_char)val;
			     numtyp = 0;				  
			     break;

			case 5:
			     cmode = (u_char)val;
			     numtyp = 0;				  
			     break;

			default:
			     (void) fprintf(fp, "*** '%s' not understood\n",
					    pcmd->argval[items].string);
			     res++;
			     numtyp = 0;				  
			}
			if (val < 0) {
			     (void) fprintf(stderr,
				     "***Value '%s' should be unsigned\n",
				      pcmd->argval[items].string);
			     res++;
			}
		   }
	     items++;
	}
	if (keyid > 0)
	     flags |= CONF_FLAG_AUTHENABLE;
	if (version > NTP_VERSION ||
	    version < NTP_OLDVERSION) {
	     (void)fprintf(fp, "***invalid version number: %u\n",
			   version);
	     res++;
	}
	if (minpoll < NTP_MINPOLL || minpoll > NTP_MAXPOLL || 
	    maxpoll < NTP_MINPOLL || maxpoll > NTP_MAXPOLL || 
	    minpoll > maxpoll) {
	     (void) fprintf(fp, "***min/max-poll must be within %d..%d\n",
			    NTP_MINPOLL, NTP_MAXPOLL);
	     res++;
	}					

	if (res)
	    return;

	memset((void *)&cpeer, 0, sizeof(cpeer));

	if (pcmd->argval[0].netnum.ss_family == AF_INET) {
		cpeer.peeraddr = GET_INADDR(pcmd->argval[0].netnum);
		if (impl_ver == IMPL_XNTPD)
			cpeer.v6_flag = 0;
	} else {
		if (impl_ver == IMPL_XNTPD_OLD) {
			fprintf(stderr,
			    "***Server doesn't understand IPv6 addresses\n");
			return;
		}
		cpeer.peeraddr6 = GET_INADDR6(pcmd->argval[0].netnum);
		cpeer.v6_flag = 1;
	}
	cpeer.hmode = (u_char) mode;
	cpeer.keyid = keyid;
	cpeer.version = (u_char) version;
	cpeer.minpoll = minpoll;
	cpeer.maxpoll = maxpoll;
	cpeer.flags = (u_char)flags;
	cpeer.ttl = cmode;

	res = doquery(impl_ver, REQ_CONFIG, 1, 1,
		      sendsize, (char *)&cpeer, &items,
		      &itemsize, &dummy, 0, sizeof(struct conf_peer));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res == INFO_ERR_FMT) {
		(void) fprintf(fp,
		    "***Retrying command with old conf_peer size\n");
		res = doquery(impl_ver, REQ_CONFIG, 1, 1,
			      sizeof(struct old_conf_peer), (char *)&cpeer,
			      &items, &itemsize, &dummy, 0,
			      sizeof(struct conf_peer));
	}
	if (res == 0)
	    (void) fprintf(fp, "done!\n");
	return;
}


/*
 * unconfig - unconfigure some associations
 */
static void
unconfig(
	struct parse *pcmd,
	FILE *fp
	)
{
	/* 8 is the maximum number of peers which will fit in a packet */
	struct conf_unpeer *pl, plist[min(MAXARGS, 8)];
	int qitems;
	int items;
	int itemsize;
	char *dummy;
	int res;
	int sendsize;

again:
	if (impl_ver == IMPL_XNTPD)
		sendsize = sizeof(struct conf_unpeer);
	else
		sendsize = v4sizeof(struct conf_unpeer);

	for (qitems = 0, pl = plist; qitems < min(pcmd->nargs, 8); qitems++) {
		if (pcmd->argval[0].netnum.ss_family == AF_INET) {
			pl->peeraddr = GET_INADDR(pcmd->argval[qitems].netnum);
			if (impl_ver == IMPL_XNTPD)
				pl->v6_flag = 0;
		} else {
			if (impl_ver == IMPL_XNTPD_OLD) {
				fprintf(stderr,
				    "***Server doesn't understand IPv6 addresses\n");
				return;
			}
			pl->peeraddr6 =
			    GET_INADDR6(pcmd->argval[qitems].netnum);
			pl->v6_flag = 1;
		}
		pl = (struct conf_unpeer *)((char *)pl + sendsize);
	}

	res = doquery(impl_ver, REQ_UNCONFIG, 1, qitems,
		      sendsize, (char *)plist, &items,
		      &itemsize, &dummy, 0, sizeof(struct conf_unpeer));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res == 0)
	    (void) fprintf(fp, "done!\n");
}


/*
 * set - set some system flags
 */
static void
set(
	struct parse *pcmd,
	FILE *fp
	)
{
	doset(pcmd, fp, REQ_SET_SYS_FLAG);
}


/*
 * clear - clear some system flags
 */
static void
sys_clear(
	struct parse *pcmd,
	FILE *fp
	)
{
	doset(pcmd, fp, REQ_CLR_SYS_FLAG);
}


/*
 * doset - set/clear system flags
 */
static void
doset(
	struct parse *pcmd,
	FILE *fp,
	int req
	)
{
	/* 8 is the maximum number of peers which will fit in a packet */
	struct conf_sys_flags sys;
	int items;
	int itemsize;
	char *dummy;
	int res;

	sys.flags = 0;
	res = 0;
	for (items = 0; items < pcmd->nargs; items++) {
		if (STREQ(pcmd->argval[items].string, "auth"))
			sys.flags |= SYS_FLAG_AUTH;
		else if (STREQ(pcmd->argval[items].string, "bclient"))
			sys.flags |= SYS_FLAG_BCLIENT;
		else if (STREQ(pcmd->argval[items].string, "calibrate"))
			sys.flags |= SYS_FLAG_CAL;
		else if (STREQ(pcmd->argval[items].string, "kernel"))
			sys.flags |= SYS_FLAG_KERNEL;
		else if (STREQ(pcmd->argval[items].string, "monitor"))
			sys.flags |= SYS_FLAG_MONITOR;
		else if (STREQ(pcmd->argval[items].string, "ntp"))
			sys.flags |= SYS_FLAG_NTP;
		else if (STREQ(pcmd->argval[items].string, "pps"))
			sys.flags |= SYS_FLAG_PPS;
		else if (STREQ(pcmd->argval[items].string, "stats"))
			sys.flags |= SYS_FLAG_FILEGEN;
		else {
			(void) fprintf(fp, "Unknown flag %s\n",
			    pcmd->argval[items].string);
			res = 1;
		}
	}

	sys.flags = htonl(sys.flags);
	if (res || sys.flags == 0)
	    return;

again:
	res = doquery(impl_ver, req, 1, 1,
		      sizeof(struct conf_sys_flags), (char *)&sys, &items,
		      &itemsize, &dummy, 0, sizeof(struct conf_sys_flags));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res == 0)
	    (void) fprintf(fp, "done!\n");
}


/*
 * data for printing/interrpreting the restrict flags
 */
struct resflags {
  const char *str;
	int bit;
};

/* XXX: HMS: we apparently don't report set bits we do not recognize. */

static struct resflags resflagsV2[] = {
	{ "ignore",	0x001 },
	{ "noserve",	0x002 },
	{ "notrust",	0x004 },
	{ "noquery",	0x008 },
	{ "nomodify",	0x010 },
	{ "nopeer",	0x020 },
	{ "notrap",	0x040 },
	{ "lptrap",	0x080 },
	{ "limited",	0x100 },
	{ "",		0 }
};

static struct resflags resflagsV3[] = {
	{ "ignore",	RES_IGNORE },
	{ "noserve",	RES_DONTSERVE },
	{ "notrust",	RES_DONTTRUST },
	{ "noquery",	RES_NOQUERY },
	{ "nomodify",	RES_NOMODIFY },
	{ "nopeer",	RES_NOPEER },
	{ "notrap",	RES_NOTRAP },
	{ "lptrap",	RES_LPTRAP },
	{ "limited",	RES_LIMITED },
	{ "version",	RES_VERSION },
	{ "kod",	RES_DEMOBILIZE },
	{ "timeout",	RES_TIMEOUT },

	{ "",		0 }
};

static struct resflags resmflags[] = {
	{ "ntpport",	RESM_NTPONLY },
	{ "interface",	RESM_INTERFACE },
	{ "",		0 }
};


/*
 * reslist - obtain and print the server's restrict list
 */
/*ARGSUSED*/
static void
reslist(
	struct parse *pcmd,
	FILE *fp
	)
{
	struct info_restrict *rl;
	struct sockaddr_storage resaddr;
	struct sockaddr_storage maskaddr;
	int items;
	int itemsize;
	int res;
	int skip;
	char *addr;
	char *mask;
	struct resflags *rf;
	u_int32 count;
	u_short flags;
	u_short mflags;
	char flagstr[300];
	static const char *comma = ", ";

again:
	res = doquery(impl_ver, REQ_GET_RESTRICT, 0, 0, 0, (char *)NULL,
		      &items, &itemsize, (void *)&rl, 0, 
		      sizeof(struct info_restrict));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res != 0)
	    return;

	if (!checkitems(items, fp))
	    return;

	if (!checkitemsize(itemsize, sizeof(struct info_restrict)) &&
	    !checkitemsize(itemsize, v4sizeof(struct info_restrict)))
	    return;

	(void) fprintf(fp,
	       "   address          mask            count        flags\n");
	(void) fprintf(fp,
		       "=====================================================================\n");

	while (items > 0) {
		memset((char *)&resaddr, 0, sizeof(resaddr));
		memset((char *)&maskaddr, 0, sizeof(maskaddr));
		if (rl->v6_flag != 0) {
			GET_INADDR6(resaddr) = rl->addr6;
			GET_INADDR6(maskaddr) = rl->mask6;
			resaddr.ss_family = AF_INET6;
			maskaddr.ss_family = AF_INET6;
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
			resaddr.ss_len = SOCKLEN(&resaddr);
#endif
			addr = nntohost(&resaddr);
		} else {
			GET_INADDR(resaddr) = rl->addr;
			GET_INADDR(maskaddr) = rl->mask;
			resaddr.ss_family = AF_INET;
			maskaddr.ss_family = AF_INET;
#ifdef HAVE_SA_LEN_IN_STRUCT_SOCKADDR
			resaddr.ss_len = SOCKLEN(&resaddr);
#endif
			if ((rl->mask == (u_int32)0xffffffff))
		    		addr = nntohost(&resaddr);
			else
				addr = stoa(&resaddr);
		}
		mask = stoa(&maskaddr);
		skip = 1;
		if ((pcmd->nargs == 0) ||
		    ((pcmd->argval->ival == 6) && (rl->v6_flag != 0)) ||
		    ((pcmd->argval->ival == 4) && (rl->v6_flag == 0)))
			skip = 0;
		count = ntohl(rl->count);
		flags = ntohs(rl->flags);
		mflags = ntohs(rl->mflags);
		flagstr[0] = '\0';

		res = 1;
		rf = &resmflags[0];
		while (rf->bit != 0) {
			if (mflags & rf->bit) {
				if (!res)
				    (void) strcat(flagstr, comma);
				res = 0;
				(void) strcat(flagstr, rf->str);
			}
			rf++;
		}

		rf = (impl_ver == IMPL_XNTPD_OLD)
		     ? &resflagsV2[0]
		     : &resflagsV3[0]
		     ;
		while (rf->bit != 0) {
			if (flags & rf->bit) {
				if (!res)
				    (void) strcat(flagstr, comma);
				res = 0;
				(void) strcat(flagstr, rf->str);
			}
			rf++;
		}

		if (flagstr[0] == '\0')
		    (void) strcpy(flagstr, "none");

		if (!skip)
			(void) fprintf(fp, "%-15.15s %-15.15s %9ld  %s\n",
					addr, mask, (u_long)count, flagstr);
		rl++;
		items--;
	}
}



/*
 * new_restrict - create/add a set of restrictions
 */
static void
new_restrict(
	struct parse *pcmd,
	FILE *fp
	)
{
	do_restrict(pcmd, fp, REQ_RESADDFLAGS);
}


/*
 * unrestrict - remove restriction flags from existing entry
 */
static void
unrestrict(
	struct parse *pcmd,
	FILE *fp
	)
{
	do_restrict(pcmd, fp, REQ_RESSUBFLAGS);
}


/*
 * delrestrict - delete an existing restriction
 */
static void
delrestrict(
	struct parse *pcmd,
	FILE *fp
	)
{
	do_restrict(pcmd, fp, REQ_UNRESTRICT);
}


/*
 * do_restrict - decode commandline restrictions and make the request
 */
static void
do_restrict(
	struct parse *pcmd,
	FILE *fp,
	int req_code
	)
{
	struct conf_restrict cres;
	int items;
	int itemsize;
	char *dummy;
	u_int32 num;
	u_long bit;
	int i;
	int res;
	int err;
	int sendsize;

	/* Initialize cres */
	cres.addr = 0;
	cres.mask = 0;
	cres.flags = 0;
	cres.mflags = 0;
	cres.v6_flag = 0;

again:
	if (impl_ver == IMPL_XNTPD)
		sendsize = sizeof(struct conf_restrict);
	else
		sendsize = v4sizeof(struct conf_restrict);

	if (pcmd->argval[0].netnum.ss_family == AF_INET) {
		cres.addr = GET_INADDR(pcmd->argval[0].netnum);
		cres.mask = GET_INADDR(pcmd->argval[1].netnum);
		if (impl_ver == IMPL_XNTPD)
			cres.v6_flag = 0;
	} else {
		if (impl_ver == IMPL_XNTPD_OLD) {
			fprintf(stderr,
			    "***Server doesn't understand IPv6 addresses\n");
			return;
		}
		cres.addr6 = GET_INADDR6(pcmd->argval[0].netnum);
		cres.v6_flag = 1;
	}
	cres.flags = 0;
	cres.mflags = 0;
	err = 0;
	for (res = 2; res < pcmd->nargs; res++) {
		if (STREQ(pcmd->argval[res].string, "ntpport")) {
			cres.mflags |= RESM_NTPONLY;
		} else {
			for (i = 0; resflagsV3[i].bit != 0; i++) {
				if (STREQ(pcmd->argval[res].string,
					  resflagsV3[i].str))
				    break;
			}
			if (resflagsV3[i].bit != 0) {
				cres.flags |= resflagsV3[i].bit;
				if (req_code == REQ_UNRESTRICT) {
					(void) fprintf(fp,
						       "Flag %s inappropriate\n",
						       resflagsV3[i].str);
					err++;
				}
			} else {
				(void) fprintf(fp, "Unknown flag %s\n",
					       pcmd->argval[res].string);
				err++;
			}
		}
	}
	cres.flags = htons(cres.flags);
	cres.mflags = htons(cres.mflags);

	/*
	 * Make sure mask for default address is zero.  Otherwise,
	 * make sure mask bits are contiguous.
	 */
	if (pcmd->argval[0].netnum.ss_family == AF_INET) {
		if (cres.addr == 0) {
			cres.mask = 0;
		} else {
			num = ntohl(cres.mask);
			for (bit = 0x80000000; bit != 0; bit >>= 1)
			    if ((num & bit) == 0)
				break;
			for ( ; bit != 0; bit >>= 1)
			    if ((num & bit) != 0)
				break;
			if (bit != 0) {
				(void) fprintf(fp, "Invalid mask %s\n",
					       numtoa(cres.mask));
				err++;
			}
		}
	} else {
		/* XXX IPv6 sanity checking stuff */
	}

	if (err)
	    return;

	res = doquery(impl_ver, req_code, 1, 1,
		      sendsize, (char *)&cres, &items,
		      &itemsize, &dummy, 0, sizeof(struct conf_restrict));
	
	if (res == INFO_ERR_IMPL && impl_ver == IMPL_XNTPD) {
		impl_ver = IMPL_XNTPD_OLD;
		goto again;
	}

	if (res == 0)
	    (void) fprintf(fp, "done!\n");
	return;
}


/*
 * monlist - obtain and print the server's monitor data
 */
/*ARGSUSED*/
static void
monlist(
	struct parse *pcmd,
	FILE *fp
	)
{
	char *struct_star;…