96 lines
2.4 KiB
Perl
96 lines
2.4 KiB
Perl
#!/usr/bin/perl
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# Copyright (C) 2009 Daniel Berteaud <daniel@firewall-services.com>
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# Copyright (C) 2003 Jonathan Middleton <jjm@ixtab.org.uk
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# Copyright (C) 2001 Paul Slootman <paul@debian.org>
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# This file is part of Logcheck.
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# Modifications for integration with smeserver-zabbix-agent
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# Logcheck is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# Logcheck is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with Foobar; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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my ($logfile, $offsetfile) = @ARGV;
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if (! -f $logfile) {
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print "File $logfile cannot be read.\n";
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exit 66;
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}
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unless ($offsetfile) {
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# offsetfile not given, use .offset/$logfile in the same directory
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$offsetfile = $logfile . '.offset';
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}
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unless (open(LOGFILE, $logfile)) {
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print "File $logfile cannot be read.\n";
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exit 66;
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}
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my ($inode, $offset) = (0, 0);
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if (open(OFFSET, $offsetfile)) {
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$_ = <OFFSET>;
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unless (! defined $_) {
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chomp $_;
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$inode = $_;
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$_ = <OFFSET>;
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unless (! defined $_) {
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chomp $_;
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$offset = $_;
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}
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}
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}
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my ($ino, $size);
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unless ((undef,$ino,undef,undef,undef,undef,undef,$size) = stat $logfile) {
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print "Cannot get $logfile file size.\n", $logfile;
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exit 65;
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}
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if ($inode == $ino) {
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exit 0 if $offset == $size; # short cut
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if ($offset > $size) {
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$offset = 0;
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#print "***************\n";
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#print "*** WARNING ***: Log file $logfile is smaller than last time checked!\n";
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#print "*************** This could indicate tampering.\n";
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}
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}
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if ($inode != $ino || $offset > $size) {
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$offset = 0;
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}
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seek(LOGFILE, $offset, 0);
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while (<LOGFILE>) {
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print $_;
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}
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$size = tell LOGFILE;
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close LOGFILE;
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unless (open(OFFSET, ">$offsetfile")) {
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print "File $offsetfile cannot be created. Check your permissions.\n";
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exit 73;
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}
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unless (chmod 0600, $offsetfile) {
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print "Cannot set permissions on file $offsetfile\n";
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exit 65;
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}
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print OFFSET "$ino\n$size\n";
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close OFFSET;
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exit 0;
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