crashtest-r0ket/tools/reader/listen-log.pl

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775 B
Perl
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#!/usr/bin/perl
#
# vim:set ts=4 sw=4:
use strict;
use warnings;
use Socket;
our $port=514;
my $hispaddr;
my $socket;
my($iaddr,$proto,$paddr);
$iaddr = pack('C4', 0,0,0,0);
$proto = getprotobyname('udp');
$paddr = sockaddr_in($port, $iaddr); # 0 means let kernel pick
socket($socket, PF_INET, SOCK_DGRAM, $proto) || die "socket: $!";
bind($socket, $paddr) || die "bind: $!";
my ($hisiaddr,$host);
my $buf;
while (1){
$hispaddr = recv($socket, $buf, 2048, 0) || die "recv: $!";
($port, $hisiaddr) = sockaddr_in($hispaddr);
# $host = gethostbyaddr($hisiaddr, AF_INET);
$host=join(".",unpack("CCCC",$hisiaddr));
$buf =~ y!a-zA-Z0-9.:,; _()[]{}?-!!cd;
print substr(scalar(localtime),11,8)," ",$host," ",$buf,"\n";
};