81 lines
1.7 KiB
Perl
81 lines
1.7 KiB
Perl
#!/usr/bin/perl
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# Copyright © 2009 Simon McVittie <http://smcv.pseudorandom.co.uk/>
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# Licensed under the GNU GPL, version 2, or any later version published by the
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# Free Software Foundation
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package IkiWiki::Plugin::404;
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use warnings;
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use strict;
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use IkiWiki 3.00;
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sub import {
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hook(type => "cgi", id => '404', call => \&cgi);
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IkiWiki::loadplugin("goto");
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}
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sub getsetup () {
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return
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plugin => {
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# not really a matter of safety, but enabling/disabling
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# through a web interface is useless - it needs web
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# server admin action too
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safe => 0,
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rebuild => 0,
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section => "web",
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}
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}
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sub cgi_page_from_404 ($$$) {
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my $path = shift;
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my $baseurl = shift;
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my $usedirs = shift;
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# fail if missing from environment or whatever
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return undef unless defined $path;
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return undef unless defined $baseurl;
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# with usedirs on, path is like /~fred/foo/bar/ or /~fred/foo/bar or
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# /~fred/foo/bar/index.html
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# with usedirs off, path is like /~fred/foo/bar.html
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# baseurl is like 'http://people.example.com/~fred'
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# convert baseurl to ~fred
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unless ($baseurl =~ s{^https?://[^/]+/?}{}) {
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return undef;
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}
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# convert path to /~fred/foo/bar
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if ($usedirs) {
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$path =~ s/\/*(?:index\.$config{htmlext})?$//;
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}
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else {
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$path =~ s/\.$config{htmlext}$//;
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}
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# remove /~fred/
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unless ($path =~ s{^/*\Q$baseurl\E/*}{}) {
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return undef;
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}
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# special case for the index
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unless ($path) {
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return 'index';
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}
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return $path;
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}
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sub cgi ($) {
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my $cgi=shift;
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if (exists $ENV{REDIRECT_STATUS} &&
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$ENV{REDIRECT_STATUS} eq '404') {
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my $page = cgi_page_from_404(
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Encode::decode_utf8($ENV{REDIRECT_URL}),
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$config{url}, $config{usedirs});
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IkiWiki::Plugin::goto::cgi_goto($cgi, $page);
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}
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}
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1;
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