modgzip2dlf - convert Common Log Format with mod_gzip extensions web server log files to DLF

modgzip2dlf file

modgzip2dlf converts web server log file in the common log format with extensions for mod_gzip to www DLF.

mod_gzip is an Apache extension developed by RemoteCommunications, Inc. Sourcecode is free available from http://www.RemoteCommunications.com/apache/mod_gzip/mod_gzip. More informations can be found at http://www.RemoteCommunications.com/apache/mod_gzip/mod_gzip_faq.htm.

mod_gzip can log informations about the compression of pages by configuring Apache to log using the 'gzip' format which can be defined as follows:

 LogFormat "%h %l %u %t \"%r\" %>s %b %{mod_gzip_result}n %{mod_gzip_compression_ratio}n" gzip

The mod_gzip extensions adds two fields to the Common Log Format; see common2dlf(1):

  gzip_result compression_ratio

gzip_result

The gzip's result code. Usually OK.

compressio_ratio

The ratio by which the content was compressed. A number from 0 to 100.

Log example :

  127.0.01 - - [11/03/2001 12:12:01 -0400] "GET / HTTP/1.0" 200 252 "-" "Mozilla/5.0" OK 49
  dsl1.myprovider.com - francis [11/03/2001 12:14:01 -0400] "GET /secret/ HTTP/1.0" 200 300 "http://www.example.com/index.html" "Mozilla/5.0" OK 74

To process a log as produced in the modgzip logformat:

 $ modgzip2dlf < common.log

modgzip2dlf will be rarely used on its own, but is more likely called by lr_log2report:

 $ lr_run lr_log2report modgzip < /var/log/httpd/common.log

common2dlf(1), combined(2), referer2dlf(1)

Joost van Baal <joostvb@logreport.org>, Francis J. Lacoste <flacoste@logreport.org> and Egon Willighagen <egonw@logreport.org>, based on an idea by Edwin Groothuis

$Id: modgzip2dlf.in,v 1.8 2004/01/21 07:22:59 wsourdeau Exp $

Copyright (C) 2000, 2001 Stichting LogReport Foundation LogReport@LogReport.org

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program (see COPYING); if not, check with http://www.gnu.org/copyleft/gpl.html or write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.