IkiWiki/Plugin/htmlscrubber.pm



#!/usr/bin/perl
package IkiWiki::Plugin::htmlscrubber;

use warnings;
use strict;
use IkiWiki;

sub import { #{{{
    IkiWiki::hook(type => "sanitize", id => "htmlscrubber",
        call => \&sanitize);
} # }}}

sub sanitize (@) { #{{{
    my %params=@_;
    return scrubber()->scrub($params{content});
} # }}}

my $_scrubber;
sub scrubber { #{{{
    return $_scrubber if defined $_scrubber;
    
    eval q{use HTML::Scrubber};
    # Lists based on http://feedparser.org/docs/html-sanitization.html
    $_scrubber = HTML::Scrubber->new(
        allow => [qw{
            a abbr acronym address area b big blockquote br
            button caption center cite code col colgroup dd del
            dfn dir div dl dt em fieldset font form h1 h2 h3 h4
            h5 h6 hr i img input ins kbd label legend li map
            menu ol optgroup option p pre q s samp select small
            span strike strong sub sup table tbody td textarea
            tfoot th thead tr tt u ul var
        }],
        default => [undef, { map { $_ => 1 } qw{
            abbr accept accept-charset accesskey action
            align alt axis border cellpadding cellspacing
            char charoff charset checked cite class
            clear cols colspan color compact coords
            datetime dir disabled enctype for frame
            headers height href hreflang hspace id ismap
            label lang longdesc maxlength media method
            multiple name nohref noshade nowrap prompt
            readonly rel rev rows rowspan rules scope
            selected shape size span src start summary
            tabindex target title type usemap valign
            value vspace width
        }, "/" => 1, # emit proper <hr /> XHTML
        }],
    );
    return $_scrubber;
} # }}}

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