export $safe_url_regexp

diff --git a/IkiWiki/Plugin/htmlscrubber.pm b/IkiWiki/Plugin/htmlscrubber.pm
index 8136bdadce567c6ae21432755d73b4d0b9a01a73..8c37f1be618b612c68bab5350077d341668be4d6 100644 (file)
--- a/IkiWiki/Plugin/htmlscrubber.pm
+++ b/IkiWiki/Plugin/htmlscrubber.pm
@@ -5,19 +5,13 @@ use warnings;
 use strict;
 use IkiWiki 2.00;
 
+# This regexp matches urls that are in a known safe scheme.
+# Feel free to use it from other plugins.
+our $safe_url_regexp;
+
 sub import { #{{{
        hook(type => "sanitize", id => "htmlscrubber", call => \&sanitize);
-} # }}}
-
-sub sanitize (@) { #{{{
-       my %params=@_;
-       return scrubber()->scrub($params{content});
-} # }}}
 
-my $_scrubber;
-sub scrubber { #{{{
-       return $_scrubber if defined $_scrubber;
-       
        # Only known uri schemes are allowed to avoid all the ways of
        # embedding javascrpt.
        # List at http://en.wikipedia.org/wiki/URI_scheme
@@ -37,7 +31,17 @@ sub scrubber { #{{{
        );
        # data is a special case. Allow data:image/*, but
        # disallow data:text/javascript and everything else.
-       my $link=qr/^(?:(?:$uri_schemes):|data:image\/|[^:]+$)/i;
+       $safe_url_regexp=qr/^(?:(?:$uri_schemes):|data:image\/|[^:]+$)/i;
+} # }}}
+
+sub sanitize (@) { #{{{
+       my %params=@_;
+       return scrubber()->scrub($params{content});
+} # }}}
+
+my $_scrubber;
+sub scrubber { #{{{
+       return $_scrubber if defined $_scrubber;
 
        eval q{use HTML::Scrubber};
        error($@) if $@;
@@ -72,13 +76,13 @@ sub scrubber { #{{{
                                playcount controls 
                        } ),
                        "/" => 1, # emit proper <hr /> XHTML
-                       href => $link,
-                       src => $link,
-                       action => $link,
-                       cite => $link,
-                       longdesc => $link,
-                       poster => $link,
-                       usemap => $link,
+                       href => $safe_url_regexp,
+                       src => $safe_url_regexp,
+                       action => $safe_url_regexp,
+                       cite => $safe_url_regexp,
+                       longdesc => $safe_url_regexp,
+                       poster => $safe_url_regexp,
+                       usemap => $safe_url_regexp,
                }],
        );
        return $_scrubber;