--- /dev/null
+#!/usr/local/bin/perl -w
+#
+# $Id$
+#
+# DISCLAIMER
+#
+# Copyright (C) 1999 Hans Lambermont and Origin B.V.
+#
+# 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 appears in all copies and
+# that both the copyright notice and this permission notice appear in
+# supporting documentation. This software is supported as is and without
+# any express or implied warranties, including, without limitation, the
+# implied warranties of merchantability and fitness for a particular
+# purpose. The name Origin B.V. must not be used to endorse or promote
+# products derived from this software without prior written permission.
+#
+
+use Getopt::Long; # GetOptions()
+use strict;
+
+(my $program = $0) =~ s%.*/(.+?)(.pl)?$%$1%;
+
+# Hardcoded paths/program names
+my $ntpdate = "ntpdate";
+my $ntpq = "ntpq";
+
+# no STDOUT buffering
+$| = 1;
+
+my ($help, $single_host, $showpeers, $strip);
+my $res = GetOptions("help!" => \$help,
+ "host=s" => \$single_host,
+ "peers!" => \$showpeers,
+ "strip=s" => \$strip);
+
+if ($help || ((@ARGV != 1) && !$single_host)) {
+ warn <<EOF;
+Usage:
+ $program [--help|--peers|--strip <string>] <file>|[--host <hostname>]
+
+Description:
+ $program prints per host given in <file> the NTP stratum level, the
+ clock offset in seconds, the daemon version, the operating system and
+ the processor.
+
+Options:
+--help
+ Print this short help text and exit.
+<file>
+ Specify the hosts file. File format is one hostname or ip number per
+ line. Lines beginning with # are considered as comment.
+--host <hostname>
+ Speficy a single host, bypassing the need for a hosts file.
+--peers
+ List all peers a host synchronizes to.
+--strip <string>
+ Strip <string> from hostnames.
+
+Example:
+ $program myhosts.txt
+ $program --host some.host --strip foo.com
+ $program --help
+EOF
+ exit 1;
+}
+
+my $hostsfile = shift;
+my (@hosts, @known_hosts);
+my (%known_host_info, %known_host_peers);
+
+sub read_hosts()
+{
+ local *HOSTS;
+ open (HOSTS, $hostsfile) ||
+ die "$program: FATAL: unable to read $hostsfile: $!\n";
+ while (<HOSTS>) {
+ next if /^\s*(#|$)/; # comment/empty
+ chomp;
+ push(@hosts, $_);
+ }
+ close(HOSTS);
+}
+
+# translate IP to hostname
+sub ip2name {
+ my($ip) = @_;
+ my($addr, $name, $aliases, $addrtype, $length, @addrs);
+ $addr = pack('C4', split(/\./, $ip));
+ ($name, $aliases, $addrtype, $length, @addrs) = gethostbyaddr($addr, 2);
+ # return lower case name
+ return("\L$name");
+}
+
+sub myip2name {
+ my($ip) = @_;
+ my $name = ip2name($ip);
+ if ($name) {
+ return $name;
+ } else {
+ return $ip;
+ }
+}
+
+# item_in_list($item, @list): returns 1 if $item is in @list, 0 if not
+sub item_in_list {
+ my($item, @list) = @_;
+ my($i);
+ foreach $i (@list) {
+ return 1 if ($item eq $i);
+ }
+ return 0;
+}
+
+sub scan_host($;$) {
+ my($host, $level) = @_;
+ my $stratum = 0;
+ my $offset = 0;
+ my $daemonversion = "";
+ my $system = "";
+ my $processor = "";
+ my @peers;
+ my $known_host = 0;
+
+ if (&item_in_list($host, @known_hosts)) {
+ $known_host = 1;
+ } else {
+ # ntpdate part
+ open(NTPDATE, "$ntpdate -bd $host 2>/dev/null |") ||
+ die "Cannot open ntpdate pipe: $!\n";
+ while (<NTPDATE>) {
+ /^stratum\s+(\d+).*$/ && do {
+ $stratum = $1;
+ };
+ /^offset\s+([0-9.-]+)$/ && do {
+ $offset = $1;
+ };
+ }
+ close(NTPDATE);
+
+ # got answers ? If so, go on.
+ if ($stratum) {
+ # ntpq part
+ my $ntpqparams = "-c 'rv 0 processor,system,daemon_version'";
+ open(NTPQ, "$ntpq $ntpqparams $host 2>/dev/null |") ||
+ die "Cannot open ntpq pipe: $!\n";
+ while (<NTPQ>) {
+ /daemon_version="(.*)"/ && do {
+ $daemonversion = $1;
+ };
+ /system="([^"]*)"/ && do {
+ $system = $1;
+ };
+ /processor="([^"]*)"/ && do {
+ $processor = $1;
+ };
+ }
+ close(NTPQ);
+
+ # Shorten daemon_version string.
+ $daemonversion =~ s/(;|Mon|Tue|Wed|Thu|Fri|Sat|Sun).*$//;
+ $daemonversion =~ s/version=//;
+ $daemonversion =~ s/(x|)ntpd //;
+ $daemonversion =~ s/(\(|\))//g;
+ $daemonversion =~ s/beta/b/;
+ $daemonversion =~ s/multicast/mc/;
+
+ # Shorten system string
+ $system =~ s/UNIX\///;
+ $system =~ s/RELEASE/r/;
+ $system =~ s/CURRENT/c/;
+
+ # Shorten processor string
+ $processor =~ s/unknown//;
+
+ # Shorten host string
+ if ($strip) {
+ $host =~ s/$strip//;
+ }
+ }
+
+ # got answers ? If so, go on.
+ if ($daemonversion) {
+ # ntpq again, find out the peers this time
+ if ($showpeers) {
+ my $ntpqparams = "-pn";
+ open(NTPQ, "$ntpq $ntpqparams $host 2>/dev/null |") ||
+ die "Cannot open ntpq pipe: $!\n";
+ while (<NTPQ>) {
+ /^No association ID's returned$/ && do {
+ last;
+ };
+ /^ remote/ && do {
+ next;
+ };
+ /^==/ && do {
+ next;
+ };
+ /^( |x|\.|-|\+|#|\*|o)([^ ]+)/ && do {
+ push(@peers, $2);
+ next;
+ };
+ print "ERROR: $_";
+ }
+ close(NTPQ);
+ }
+ }
+
+ # Add scanned host to known_hosts array
+ push(@known_hosts, $host);
+ $known_host_info{$host} = sprintf("%2d %9.3f %-11s %-12s %s",
+ $stratum, $offset, substr($daemonversion,0,11),
+ substr($system,0,12), substr($processor,0,9));
+ $known_host_peers{$host} = [@peers];
+ }
+
+ if ($stratum || $known_host) {
+ my $printhost = ' ' x $level . $host;
+ printf("%-32s %s\n",
+ substr($printhost,0,32), $known_host_info{$host});
+ if ($showpeers) {
+ my $peer;
+ foreach $peer (@{$known_host_peers{$host}}) {
+ &scan_host(myip2name($peer), $level + 1);
+ }
+ }
+ } else {
+ my $printhost = ' ' x $level . $host;
+ printf("%-32s ?\n", substr($printhost,0,32));
+ }
+}
+
+sub scan_hosts()
+{
+ my $host;
+ for $host (@hosts) {
+ scan_host($host, 0);
+ }
+}
+
+# Main program
+
+if ($single_host) {
+ push(@hosts, $single_host);
+} else {
+ &read_hosts($hostsfile);
+}
+
+# Print header
+print <<EOF;
+Host st offset(s) version system processor
+--------------------------------+--+---------+-----------+------------+---------
+EOF
+
+&scan_hosts();
+
+exit 0;
+
+# ir. Hans Lambermont, Architect/Developer, Hans.Lambermont@nl.origin-it.com
+# Origin Managed Services, IntraNet Services, tel: +31402785376 +31653252172
+# ==>> Internet Proxies * IntraConnect * Internet Services <<==
projects / thirdparty / ntp.git / commitdiff
