| Current Path : /usr/src/contrib/ntp/scripts/monitoring/ |
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| Current File : //usr/src/contrib/ntp/scripts/monitoring/ntptrap |
#!/local/bin/perl --*-perl-*-
;#
;# ntptrap,v 3.1 1993/07/06 01:09:15 jbj Exp
;#
;# a client for the xntp mode 6 trap mechanism
;#
;# Copyright (c) 1992
;# Rainer Pruy Friedrich-Alexander Universitaet Erlangen-Nuernberg
;#
;#
;#############################################################
$0 =~ s!^.*/([^/]+)$!$1!; # strip to filename
;# enforce STDOUT and STDERR to be line buffered
$| = 1;
select((select(STDERR),$|=1)[$[]);
;#######################################
;# load utility routines and definitions
;#
require('ntp.pl'); # implementation of the NTP protocol
use Socket;
#eval { require('sys/socket.ph'); require('netinet/in.ph') unless defined(&INADDR_ANY); } ||
#do {
#die("$0: $@") unless $[ == index($@, "Can't locate ");
#warn "$0: $@";
#warn "$0: supplying some default definitions\n";
#eval 'sub INADDR_ANY { 0; } sub AF_INET {2;} sub SOCK_DGRAM {2;} 1;' || die "$0: $@";
#};
require('getopts.pl'); # option parsing
require('ctime.pl'); # date/time formatting
;######################################
;# define some global constants
;#
$BASE_TIMEOUT=10;
$FRAG_TIMEOUT=10;
$MAX_TRY = 5;
$REFRESH_TIME=60*15; # 15 minutes (server uses 1 hour)
$ntp'timeout = $FRAG_TIMEOUT; #';
$ntp'timeout if 0;
;######################################
;# now process options
;#
sub usage
{
die("usage: $0 [-n] [-p <port>] [-l <logfile>] [host] ...\n");
}
$opt_l = "/dev/null"; # where to write debug messages to
$opt_p = 0; # port to use locally - (0 does mean: will be choosen by kernel)
&usage unless &Getopts('l:p:');
&Getopts if 0; # make -w happy
@Hosts = ($#ARGV < $[) ? ("localhost") : @ARGV;
;# setup for debug output
$DEBUGFILE=$opt_l;
$DEBUGFILE="&STDERR" if $DEBUGFILE eq '-';
open(DEBUG,">>$DEBUGFILE") || die("Cannot open \"$DEBUGFILE\": $!\n");
select((select(DEBUG),$|=1)[$[]);
;# &log prints a single trap record (adding a (local) time stamp)
sub log
{
chop($date=&ctime(time));
print "$date ",@_,"\n";
}
sub debug
{
print DEBUG @_,"\n";
}
;#
$proto_udp = (getprotobyname('udp'))[$[+2] ||
(warn("$0: Could not get protocoll number for 'udp' using 17"), 17);
$ntp_port = (getservbyname('ntp','udp'))[$[+2] ||
(warn("$0: Could not get port number for service ntp/udp using 123"), 123);
;#
socket(S, &AF_INET, &SOCK_DGRAM, $proto_udp) || die("Cannot open socket: $!\n");
;#
bind(S, pack("S n a4 x8", &AF_INET, $opt_p, &INADDR_ANY)) ||
die("Cannot bind: $!\n");
($my_port, $my_addr) = (unpack("S n a4 x8",getsockname(S)))[$[+1,$[+2];
&log(sprintf("Listening at address %d.%d.%d.%d port %d",
unpack("C4",$my_addr), $my_port));
;# disregister with all servers in case of termination
sub cleanup
{
&log("Aborted by signal \"$_[$[]\"") if defined($_[$[]);
foreach (@Hosts)
{
if ( ! defined($Host{$_}) )
{
print "no info for host '$_'\n";
next;
}
&ntp'send(S,31,0,"",pack("Sna4x8",&AF_INET,$ntp_port,$Host{$_})); #';
}
close(S);
exit(2);
}
$SIG{'HUP'} = 'cleanup';
$SIG{'INT'} = 'cleanup';
$SIG{'QUIT'} = 'cleanup';
$SIG{'TERM'} = 'cleanup';
0 && $a && $b;
sub timeouts # sort timeout id array
{
$TIMEOUTS{$a} <=> $TIMEOUTS{$b};
}
;# a Request element looks like: pack("a4SC",addr,associd,op)
@Requests= ();
;# compute requests for set trap control msgs to each host given
{
local($name,$addr);
foreach (@Hosts)
{
if (/^(\d+)\.(\d+)\.(\d+)\.(\d+)$/)
{
($name,$addr) =
(gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET))[$[,$[+4];
unless (defined($name))
{
$name = sprintf("[[%d.%d.%d.%d]]",$1,$2,$3,$4);
$addr = pack("C4",$1,$2,$3,$4);
}
}
else
{
($name,$addr) = (gethostbyname($_))[$[,$[+4];
unless (defined($name))
{
warn "$0: unknown host \"$_\" - ignored\n";
next;
}
}
next if defined($Host{$name});
$Host{$name} = $addr;
$Host{$_} = $addr;
push(@Requests,pack("a4SC",$addr,0,6)); # schedule a set trap request for $name
}
}
sub hostname
{
local($addr) = @_;
return $HostName{$addr} if defined($HostName{$addr});
local($name) = gethostbyaddr($addr,&AF_INET);
&debug(sprintf("hostname(%d.%d.%d.%d) = \"%s\"",unpack("C4",$addr),$name))
if defined($name);
defined($name) && ($HostName{$addr} = $name) && (return $name);
&debug(sprintf("Failed to get name for %d.%d.%d.%d",unpack("C4",$addr)));
return sprintf("[%d.%d.%d.%d]",unpack("C4",$addr));
}
;# when no hosts were given on the commandline no requests have been scheduled
&usage unless (@Requests);
&debug(sprintf("%d request(s) scheduled",scalar(@Requests)));
grep(&debug(" - ".$_),keys(%Host));
;# allocate variables;
$addr="";
$assoc=0;
$op = 0;
$timeout = 0;
$ret="";
%TIMEOUTS = ();
%TIMEOUT_PROCS = ();
@TIMEOUTS = ();
$len = 512;
$buf = " " x $len;
while (1)
{
if (@Requests || @TIMEOUTS) # if there is some work pending
{
if (@Requests)
{
($addr,$assoc,$op) = unpack("a4SC",($req = shift(@Requests)));
&debug(sprintf("Request: %s: %s(%d)",&hostname($addr), &ntp'cntrlop_name($op), $assoc)); #';))
$ret = &ntp'send(S,$op,$assoc,"", #'(
pack("Sna4x8",&AF_INET,$ntp_port,$addr));
&set_timeout("retry-".unpack("H*",$req),time+$BASE_TIMEOUT,
sprintf("&retry(\"%s\");",unpack("H*",$req)));
last unless (defined($ret)); # warn called by ntp'send();
;# if there are more requests just have a quick look for new messages
;# otherwise grant server time for a response
$timeout = @Requests ? 0 : $BASE_TIMEOUT;
}
if ($timeout && @TIMEOUTS)
{
;# ensure not to miss a timeout
if ($timeout + time > $TIMEOUTS{$TIMEOUTS[$[]})
{
$timeout = $TIMEOUTS{$TIMEOUTS[$[]} - time;
$timeout = 0 if $timeout < 0;
}
}
}
else
{
;# no work yet - wait for some messages dropping in
;# usually this will not hapen as the refresh semantic will
;# always have a pending timeout
undef($timeout);
}
vec($mask="",fileno(S),1) = 1;
$ret = select($mask,undef,undef,$timeout);
warn("$0: select: $!\n"),last if $ret < 0; # give up on error return from select
if ($ret == 0)
{
;# timeout
if (@TIMEOUTS && time > $TIMEOUTS{$TIMEOUTS[$[]})
{
;# handle timeout
$timeout_proc =
(delete $TIMEOUT_PROCS{$TIMEOUTS[$[]},
delete $TIMEOUTS{shift(@TIMEOUTS)})[$[];
eval $timeout_proc;
die "timeout eval (\"$timeout_proc\"): $@\n" if $@;
}
;# else: there may be something to be sent
}
else
{
;# data avail
$from = recv(S,$buf,$len,0);
;# give up on error return from recv
warn("$0: recv: $!\n"), last unless (defined($from));
$from = (unpack("Sna4",$from))[$[+2]; # keep host addr only
;# could check for ntp_port - but who cares
&debug("-Packet from ",&hostname($from));
;# stuff packet into ntp mode 6 receive machinery
($ret,$data,$status,$associd,$op,$seq,$auth_keyid) =
&ntp'handle_packet($buf,$from); # ';
&debug(sprintf("%s uses auth_keyid %d",&hostname($from),$auth_keyid)) if defined($auth_keyid);
next unless defined($ret);
if ($ret eq "")
{
;# handle packet
;# simple trap response messages have neither timeout nor retries
&clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op))) unless $op == 7;
delete $RETRY{pack("a4SC",$from,$associd,$op)} unless $op == 7;
&process_response($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid);
}
else
{
;# some kind of error
&log(sprintf("%50s: %s: %s",(gethostbyaddr($from,&AF_INET))[$[],$ret,$data));
if ($ret ne "TIMEOUT" && $ret ne "ERROR")
{
&clear_timeout("retry-".unpack("H*",pack("a4SC",$from,$associd,$op)));
}
}
}
}
warn("$0: terminating\n");
&cleanup;
exit 0;
;##################################################
;# timeout support
;#
sub set_timeout
{
local($id,$time,$proc) = @_;
$TIMEOUTS{$id} = $time;
$TIMEOUT_PROCS{$id} = $proc;
@TIMEOUTS = sort timeouts keys(%TIMEOUTS);
chop($date=&ctime($time));
&debug(sprintf("Schedule timeout \"%s\" for %s", $id, $date));
}
sub clear_timeout
{
local($id) = @_;
delete $TIMEOUTS{$id};
delete $TIMEOUT_PROCS{$id};
@TIMEOUTS = sort timeouts keys(%TIMEOUTS);
&debug("Clear timeout \"$id\"");
}
0 && &refresh;
sub refresh
{
local($addr) = @_[$[];
$addr = pack("H*",$addr);
&debug(sprintf("Refreshing trap for %s", &hostname($addr)));
push(@Requests,pack("a4SC",$addr,0,6));
}
0 && &retry;
sub retry
{
local($tag) = @_;
$tag = pack("H*",$tag);
$RETRY{$tag} = 0 if (!defined($RETRY{$tag}));
if (++$RETRY{$tag} > $MAX_TRY)
{
&debug(sprintf("Retry failed: %s assoc %5d op %d",
&hostname(substr($tag,$[,4)),
unpack("x4SC",$tag)));
return;
}
&debug(sprintf("Retrying: %s assoc %5d op %d",
&hostname(substr($tag,$[,4)),
unpack("x4SC",$tag)));
push(@Requests,$tag);
}
sub process_response
{
local($from,$ret,$data,$status,$associd,$op,$seq,$auth_keyid) = @_;
$msg="";
if ($op == 7) # trap response
{
$msg .= sprintf("%40s trap#%-5d",
&hostname($from),$seq);
&debug (sprintf("\nTrap %d associd %d:\n%s\n===============\n",$seq,$associd,$data));
if ($associd == 0) # system event
{
$msg .= " SYSTEM ";
$evnt = &ntp'SystemEvent($status); #';
$msg .= "$evnt ";
;# for special cases add additional info
($stratum) = ($data =~ /stratum=(\d+)/);
($refid) = ($data =~ /refid=([\w\.]+)/);
$msg .= "stratum=$stratum refid=$refid";
if ($refid =~ /\[?(\d+)\.(\d+)\.(\d+)\.(\d+)/)
{
local($x) = (gethostbyaddr(pack("C4",$1,$2,$3,$4),&AF_INET));
$msg .= " " . $x if defined($x)
}
if ($evnt eq "event_sync_chg")
{
$msg .= sprintf("%s %s ",
&ntp'LI($status), #',
&ntp'ClockSource($status) #'
);
}
elsif ($evnt eq "event_sync/strat_chg")
{
($peer) = ($data =~ /peer=([0-9]+)/);
$msg .= " peer=$peer";
}
elsif ($evnt eq "event_clock_excptn")
{
if (($device) = ($data =~ /device=\"([^\"]+)\"/))
{
($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
$Cstatus = hex($cstatus);
$msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
$msg .= " \"$device\" \"$timecode\"";
}
else
{
push(@Requests,pack("a4SC",$from, $associd, 4));
}
}
}
else # peer event
{
$msg .= sprintf("peer %5d ",$associd);
($srcadr) = ($data =~ /srcadr=\[?([\d\.]+)/);
$msg .= sprintf("%-18s %40s ", "[$srcadr]",
&hostname(pack("C4",split(/\./,$srcadr))));
$evnt = &ntp'PeerEvent($status); #';
$msg .= "$evnt ";
;# for special cases include additional info
if ($evnt eq "event_clock_excptn")
{
if (($device) = ($data =~ /device=\"([^\"]+)\"/))
{
;#&debug("----\n$data\n====\n");
($cstatus) = ($data =~ /refclockstatus=0?x?([\da-fA-F]+)/);
$Cstatus = hex($cstatus);
$msg .= sprintf("- %-32s",&ntp'clock_status($Cstatus)); #');
($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
$msg .= " \"$device\" \"$timecode\"";
}
else
{
;# no clockvars included - post a cv request
push(@Requests,pack("a4SC",$from, $associd, 4));
}
}
elsif ($evnt eq "event_stratum_chg")
{
($stratum) = ($data =~ /stratum=(\d+)/);
$msg .= "new stratum $stratum";
}
}
}
elsif ($op == 6) # set trap resonse
{
&debug("Set trap ok from ",&hostname($from));
&set_timeout("refresh-".unpack("H*",$from),time+$REFRESH_TIME,
sprintf("&refresh(\"%s\");",unpack("H*",$from)));
return;
}
elsif ($op == 4) # read clock variables response
{
;# status of clock
$msg .= sprintf(" %40s ", &hostname($from));
if ($associd == 0)
{
$msg .= "system clock status: ";
}
else
{
$msg .= sprintf("peer %5d clock",$associd);
}
$msg .= sprintf("%-32s",&ntp'clock_status($status)); #');
($device) = ($data =~ /device=\"([^\"]+)\"/);
($timecode) = ($data =~ /timecode=\"([^\"]+)\"/);
$msg .= " \"$device\" \"$timecode\"";
}
elsif ($op == 31) # unset trap response (UNOFFICIAL op)
{
;# clear timeout
&debug("Clear Trap ok from ",&hostname($from));
&clear_timeout("refresh-".unpack("H*",$from));
return;
}
else # unexpected response
{
$msg .= "unexpected response to op $op assoc=$associd";
$msg .= sprintf(" status=%04x",$status);
}
&log($msg);
}