/usr/sbin/split-logfile is in apache2-utils 2.4.29-1ubuntu4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | #!/usr/bin/perl
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
# This script will take a combined Web server access
# log file and break its contents into separate files.
# It assumes that the first field of each line is the
# virtual host identity (put there by "%v"), and that
# the logfiles should be named that+".log" in the current
# directory.
#
# The combined log file is read from stdin. Records read
# will be appended to any existing log files.
#
use strict;
use warnings;
my %log_file = ();
while (my $log_line = <STDIN>) {
#
# Get the first token from the log record; it's the
# identity of the virtual host to which the record
# applies.
#
my ($vhost) = split (/\s/, $log_line);
#
# Normalize the virtual host name to all lowercase.
# If it's blank, the request was handled by the default
# server, so supply a default name. This shouldn't
# happen, but caution rocks.
#
$vhost = lc ($vhost) || "access";
#
# if the vhost contains a "/" or "\", it is illegal so just use
# the default log to avoid any security issues due if it is interprted
# as a directory separator.
if ($vhost =~ m#[/\\]#) { $vhost = "access" }
#
# If the log file for this virtual host isn't opened
# yet, do it now.
#
if (! $log_file{$vhost}) {
open $log_file{$vhost}, ">>${vhost}.log"
or die ("Can't open ${vhost}.log");
}
#
# Strip off the first token (which may be null in the
# case of the default server), and write the edited
# record to the current log file.
#
$log_line =~ s/^\S*\s+//;
print {$log_file{$vhost}} $log_line;
}
exit 0;
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