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#!/usr/bin/perl -Tw
# From: Markus Gyger <mgyger@itr.ch>
#
# I'd like to see a redirector which "normalizes" URLs to have
# a higher chance to get a hit. I didn't see such a redirector,
# so I thought I would send my little attempt. However, I have
# no real idea how much CPU time it needs using the LWP modules,
# but it seems to work.
require 5.003;
use strict;
use URI::URL;
$| = 1; # force a flush after every print on STDOUT
my ($url, $addr, $fqdn, $ident, $method);
while (<>) {
($url, $addr, $fqdn, $ident, $method) = m:(\S*) (\S*)/(\S*) (\S*) (\S*):;
# "normalize" URL
$url = url $url; # also removes default port number
$url->host(lc $url->host); # map host name to lower case
my $epath = $url->epath;
$epath =~ s/%7e/~/ig; # unescape ~
$epath =~ s/(%[\da-f]{2})/\U$1/ig; # capitalize escape digits
if ($url->scheme =~ /^(http|ftp)$/) {
$epath =~ s:/\./:/:g; # safe?
$epath =~ s://:/:g; # safe?
}
$url->epath($epath);
# ...
} continue {
print "$url $addr/$fqdn $ident $method\n"
}
BEGIN {
unless (URI::URL::implementor('cache_object')) {
package cache_object;
@cache_object::ISA = (URI::URL::implementor());
URI::URL::implementor('cache_object', 'cache_object');
sub default_port { 3128 }
}
}