302 lines
7.6 KiB
Plaintext
302 lines
7.6 KiB
Plaintext
|
#!/usr/local/bin/perl -w
|
||
|
|
#
|
||
|
|
# $Id: ntpsweep,v 1.3 2000/01/15 07:37:52 stenn Exp $
|
||
|
|
#
|
||
|
|
# DISCLAIMER
|
||
|
|
#
|
||
|
|
# Copyright (C) 1999,2000 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.
|
||
|
|
#
|
||
|
|
# Hans Lambermont <Hans.Lambermont@nl.origin-it.com>/<H.Lambermont@chello.nl>
|
||
|
|
# 14 Jan 2000
|
||
|
|
|
||
|
|
require 5.0; # But actually tested on 5.004 ;)
|
||
|
|
use Getopt::Long; # GetOptions()
|
||
|
|
use strict;
|
||
|
|
|
||
|
|
my $version = 1.3;
|
||
|
|
(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, $maxlevel, $strip, $askversion);
|
||
|
|
my $res = GetOptions("help!" => \$help,
|
||
|
|
"host=s" => \$single_host,
|
||
|
|
"peers!" => \$showpeers,
|
||
|
|
"maxlevel=s" => \$maxlevel,
|
||
|
|
"strip=s" => \$strip,
|
||
|
|
"version!" => \$askversion);
|
||
|
|
|
||
|
|
if ($askversion) {
|
||
|
|
print("$version\n");
|
||
|
|
exit 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($help || ((@ARGV != 1) && !$single_host)) {
|
||
|
|
warn <<EOF;
|
||
|
|
This is $program, version $version
|
||
|
|
Copyright (C) 1999,2000 Hans Lambermont and Origin B.V. Disclaimer inside.
|
||
|
|
|
||
|
|
Usage:
|
||
|
|
$program [--help|--peers|--strip <string>|--maxlevel <level>|--version] \\
|
||
|
|
<file>|[--host <hostname>]
|
||
|
|
|
||
|
|
Description:
|
||
|
|
$program prints per host given in <file> the NTP stratum level, the
|
||
|
|
clock offset in seconds, the daemon version, the operating system and
|
||
|
|
the processor. Optionally recursing through all peers.
|
||
|
|
|
||
|
|
Options:
|
||
|
|
--help
|
||
|
|
Print this short help text and exit.
|
||
|
|
--version
|
||
|
|
Print version ($version) and exit.
|
||
|
|
<file>
|
||
|
|
Specify 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
|
||
|
|
Recursively list all peers a host synchronizes to.
|
||
|
|
An '= ' before a peer means a loop. Recursion stops here.
|
||
|
|
--maxlevel <level>
|
||
|
|
Traverse peers up to this level (4 is a reasonable number).
|
||
|
|
--strip <string>
|
||
|
|
Strip <string> from hostnames.
|
||
|
|
|
||
|
|
Examples:
|
||
|
|
$program myhosts.txt --strip .foo.com
|
||
|
|
$program --host some.host --peers --maxlevel 4
|
||
|
|
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, $_);
|
||
|
|
}
|
||
|
|
close(HOSTS);
|
||
|
|
}
|
||
|
|
|
||
|
|
# translate IP to hostname if possible
|
||
|
|
sub ip2name {
|
||
|
|
my($ip) = @_;
|
||
|
|
my($addr, $name, $aliases, $addrtype, $length, @addrs);
|
||
|
|
$addr = pack('C4', split(/\./, $ip));
|
||
|
|
($name, $aliases, $addrtype, $length, @addrs) = gethostbyaddr($addr, 2);
|
||
|
|
if ($name) {
|
||
|
|
# return lower case name
|
||
|
|
return("\L$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, @trace) = @_;
|
||
|
|
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
|
||
|
|
$processor =~ s/unknown//;
|
||
|
|
}
|
||
|
|
|
||
|
|
# got answers ? If so, go on.
|
||
|
|
if ($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, ip2name($2));
|
||
|
|
next;
|
||
|
|
};
|
||
|
|
print "ERROR: $_";
|
||
|
|
}
|
||
|
|
close(NTPQ);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# Add scanned host to known_hosts array
|
||
|
|
push(@known_hosts, $host);
|
||
|
|
if ($stratum) {
|
||
|
|
$known_host_info{$host} = sprintf("%2d %9.3f %-11s %-12s %s",
|
||
|
|
$stratum, $offset, substr($daemonversion,0,11),
|
||
|
|
substr($system,0,12), substr($processor,0,9));
|
||
|
|
} else {
|
||
|
|
# Stratum level 0 is consider invalid
|
||
|
|
$known_host_info{$host} = sprintf(" ?");
|
||
|
|
}
|
||
|
|
$known_host_peers{$host} = [@peers];
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($stratum || $known_host) { # Valid or known host
|
||
|
|
my $printhost = ' ' x $level . $host;
|
||
|
|
# Shorten host string
|
||
|
|
if ($strip) {
|
||
|
|
$printhost =~ s/$strip//;
|
||
|
|
}
|
||
|
|
# append number of peers in brackets if requested and valid
|
||
|
|
if ($showpeers && ($known_host_info{$host} ne " ?")) {
|
||
|
|
$printhost .= " (" . @{$known_host_peers{$host}} . ")";
|
||
|
|
}
|
||
|
|
# Finally print complete host line
|
||
|
|
printf("%-32s %s\n",
|
||
|
|
substr($printhost,0,32), $known_host_info{$host});
|
||
|
|
if ($showpeers && (eval($maxlevel ? $level < $maxlevel : 1))) {
|
||
|
|
my $peer;
|
||
|
|
push(@trace, $host);
|
||
|
|
# Loop through peers
|
||
|
|
foreach $peer (@{$known_host_peers{$host}}) {
|
||
|
|
if (&item_in_list($peer, @trace)) {
|
||
|
|
# we've detected a loop !
|
||
|
|
$printhost = ' ' x ($level + 1) . "= " . $peer;
|
||
|
|
# Shorten host string
|
||
|
|
if ($strip) {
|
||
|
|
$printhost =~ s/$strip//;
|
||
|
|
}
|
||
|
|
printf("%-32s %s\n",
|
||
|
|
substr($printhost,0,32));
|
||
|
|
} else {
|
||
|
|
if (substr($peer,0,3) ne "127") {
|
||
|
|
&scan_host($peer, $level + 1, @trace);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else { # We did not get answers from this host
|
||
|
|
my $printhost = ' ' x $level . $host;
|
||
|
|
# Shorten host string
|
||
|
|
if ($strip) {
|
||
|
|
$printhost =~ s/$strip//;
|
||
|
|
}
|
||
|
|
printf("%-32s ?\n", substr($printhost,0,32));
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
sub scan_hosts()
|
||
|
|
{
|
||
|
|
my $host;
|
||
|
|
for $host (@hosts) {
|
||
|
|
my @trace;
|
||
|
|
push(@trace, $host);
|
||
|
|
scan_host($host, 0, @trace);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# 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;
|