Apache2 virtualhost configuration for WC3 validation service running on separate domain

validate.2000cubits.lab.conf

# --------------------------------------------------------------------------
# Installation:
# --------------------------------------------------------------------------
# Disable the default configuration and setup new virtual host
# $ sudo a2disconf w3c-markup-validator
# $ sudo a2ensite validate.2000cubits.lab
# $ sudo service apache2 reload
# --------------------------------------------------------------------------
# Taken from original distribution: w3c-markup-validator.conf
# --------------------------------------------------------------------------
#                                                                -*- apache -*-
# Debianized httpd.conf snippet for W3C Markup Validation Service
# Note that this is not a complete server configuration file, but contains
# only the validator-specific part.
#
# The w3c-markup-validator postinst script will link
# /etc/apache2/conf.available/w3c-markup-validator.conf -> /etc/w3c/httpd.conf
#
# To run the validator without mod_perl 2.x even if it is loaded, comment
# out the "IfDefine MODPERL2" sections below.
<VirtualHost *:80>
  ServerName validate.2000cubits.lab
# Referer dependent redirects.

<IfModule mod_rewrite.c>
RewriteEngine On

# check/referer is deprecated in favor of check?uri=referer
RewriteRule ^(/+check)/+referr?er$ $1?uri=referer [R=301,QSA,L]

# If Referer is present, redirect check?uri=referer to check?uri=$Referer
RewriteRule . - [E=have_uri_referer:false]
RewriteCond %{QUERY_STRING} (^|.*?[;&])ur[il]=referer([;&].*|$)
RewriteRule . - [E=qs1:%1,E=qs2:%2,E=have_uri_referer:true]
RewriteCond %{ENV:have_uri_referer} =true
RewriteCond %{HTTP_REFERER} ^(.+)$
RewriteRule ^/+w3c-validator/+check$ \
            /w3c-validator/check?%{ENV:qs1}uri=%1%{ENV:qs2} [R,B,NE,L]
</IfModule>

# Tell httpd that check and sendfeedback.pl are CGI scripts.

Alias /check /usr/lib/cgi-bin/w3c-markup-validator/check
AliasMatch ^/+feedback(\.html)?$ \
           /usr/lib/cgi-bin/w3c-markup-validator/sendfeedback.pl

<IfDefine MODPERL2>
# Note: this block affects the whole server, not just the validator.
PerlSwitches -T
PerlPostConfigRequire /usr/share/w3c-markup-validator/mod_perl/startup.pl
</IfDefine>

<LocationMatch "^/+(check|feedback(\.html)?)$">
  Options               +ExecCGI
  SetHandler            cgi-script
<IfDefine MODPERL2>
  SetHandler            perl-script
  PerlResponseHandler   ModPerl::Registry
  PerlOptions           +ParseHeaders
</IfDefine>
  Require all granted
  # Environment settings affecting validator's outside connectivity, see
  # LWP::UserAgent and Net::FTP documentation for details.
  #SetEnv                http_proxy      http://proxy:3128
  #SetEnv                https_proxy     http://proxy:3128
  #SetEnv                ftp_proxy       http://proxy:3128
  #SetEnv                no_proxy        localdomain
  #SetEnv                FTP_PASSIVE     1
</LocationMatch>

# This is the directory where you have the validator's *.html, *.css etc files.

Alias /  /usr/share/w3c-markup-validator/html/
<Directory /usr/share/w3c-markup-validator/html/>
  Options               IncludesNOEXEC Indexes MultiViews
  AllowOverride         None
  AddHandler            server-parsed .html
  AddCharset            utf-8         .html
  AddEncoding           x-gzip        .gz
  <Files *.js.gz>
    ForceType           application/javascript
  </Files>
  <Files *.css.gz>
    ForceType           text/css
  </Files>

  <IfModule mod_rewrite.c>
  Options +SymLinksIfOwnerMatch
  RewriteBase /
  RewriteRule fragment-upload(\.html)? detailed.html#validate-by-input [R,L,NE]
  RewriteRule file-upload(\.html)? detailed.html#validate-by-upload [R,L,NE]
  </IfModule>

  <IfModule mod_expires.c>
  ExpiresActive On
  ExpiresByType image/gif A2592000
  ExpiresByType image/png A2592000
  ExpiresByType text/html A604800
  ExpiresByType text/css A2592000
  ExpiresByType text/javascript A2592000
  ExpiresByType application/javascript A2592000
  ExpiresByType application/ecmascript A2592000
  </IfModule>

  # See bug 608225
  # Permission may be denied higher up so override here.
  Require all granted

  # That project doesn't use ap_expr yet: Enable legacy mode:
  SSILegacyExprParser on
</Directory>

# Atom news feed
Redirect /whatsnew.atom \
         http://www.w3.org/QA/Tools/validator-whatsnew.atom

</VirtualHost>