X-Git-Url: http://git.vanrenterghem.biz/git.ikiwiki.info.git/blobdiff_plain/54541869392f162bb195b8b67814ef0a394c1961..9dbbbd0efacb5acebaed2d0ee74d1c185b27394a:/IkiWiki/Plugin/meta.pm

diff --git a/IkiWiki/Plugin/meta.pm b/IkiWiki/Plugin/meta.pm
index 41d096e0e..987262a48 100644
--- a/IkiWiki/Plugin/meta.pm
+++ b/IkiWiki/Plugin/meta.pm
@@ -4,60 +4,202 @@ package IkiWiki::Plugin::meta;
 
 use warnings;
 use strict;
-use IkiWiki;
+use IkiWiki 2.00;
 
 my %meta;
 my %title;
+my %permalink;
+my %author;
+my %authorurl;
+my %license;
+my %copyright;
 
 sub import { #{{{
-	IkiWiki::hook(type => "preprocess", id => "meta", 
-		call => \&preprocess);
-	IkiWiki::hook(type => "pagetemplate", id => "meta", 
-		call => \&pagetemplate);
+	hook(type => "needsbuild", id => "meta", call => \&needsbuild);
+	hook(type => "preprocess", id => "meta", call => \&preprocess);
+	hook(type => "pagetemplate", id => "meta", call => \&pagetemplate);
 } # }}}
 
-sub preprocess (@) { #{{{
-	if (! @_) {
-		return "";
+sub needsbuild (@) { #{{{
+	my $needsbuild=shift;
+	foreach my $page (keys %pagestate) {
+		if (exists $pagestate{$page}{meta}) {
+			if (grep { $_ eq $pagesources{$page} } @$needsbuild) {
+				# remove state, it will be re-added
+				# if the preprocessor directive is still
+				# there during the rebuild
+				delete $pagestate{$page}{meta};
+			}
+		}
+	}
+}
+
+sub scrub ($) { #{{{
+	if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
+		return IkiWiki::Plugin::htmlscrubber::sanitize(content => shift);
 	}
+	else {
+		return shift;
+	}
+} #}}}
+
+sub preprocess (@) { #{{{
+	return "" unless @_;
 	my %params=@_;
 	my $key=shift;
 	my $value=$params{$key};
 	delete $params{$key};
 	my $page=$params{page};
 	delete $params{page};
+	my $destpage=$params{destpage};
+	delete $params{destpage};
+	delete $params{preview};
 
-	eval q{use CGI 'escapeHTML'};
+	eval q{use HTML::Entities};
+	# Always decode, even if encoding later, since it might not be
+	# fully encoded.
+	$value=decode_entities($value);
 
-	if ($key eq 'link') {
-		if (%params) {
-			$meta{$page}='' unless exists $meta{$page};
-			$meta{$page}.="<link href=\"".escapeHTML($value)."\" ".
-				join(" ", map { escapeHTML("$_=\"$params{$_}\"") } keys %params).
-				" />\n";
+	if ($key eq 'title') {
+		$title{$page}=HTML::Entities::encode_numeric($value);
+	}
+	elsif ($key eq 'permalink') {
+		$permalink{$page}=$value;
+		push @{$meta{$page}}, scrub('<link rel="bookmark" href="'.encode_entities($value).'" />');
+	}
+	elsif ($key eq 'date') {
+		eval q{use Date::Parse};
+		if (! $@) {
+			my $time = str2time($value);
+			$IkiWiki::pagectime{$page}=$time if defined $time;
+		}
+	}
+	elsif ($key eq 'stylesheet') {
+		my $rel=exists $params{rel} ? $params{rel} : "alternate stylesheet";
+		my $title=exists $params{title} ? $params{title} : $value;
+		# adding .css to the value prevents using any old web
+		# editable page as a stylesheet
+		my $stylesheet=bestlink($page, $value.".css");
+		if (! length $stylesheet) {
+			return "[[meta ".gettext("stylesheet not found")."]]";
+		}
+		push @{$meta{$page}}, '<link href="'.urlto($stylesheet, $page).
+			'" rel="'.encode_entities($rel).
+			'" title="'.encode_entities($title).
+			"\" type=\"text/css\" />";
+	}
+	elsif ($key eq 'openid') {
+		if (exists $params{server}) {
+			push @{$meta{$page}}, '<link href="'.encode_entities($params{server}).
+				'" rel="openid.server" />';
+		}
+		push @{$meta{$page}}, '<link href="'.encode_entities($value).
+			'" rel="openid.delegate" />';
+	}
+	elsif ($key eq 'license') {
+		push @{$meta{$page}}, '<link rel="license" href="#page_license" />';
+		$license{$page}=$value;
+	}
+	elsif ($key eq 'copyright') {
+		push @{$meta{$page}}, '<link rel="copyright" href="#page_copyright" />';
+		$copyright{$page}=$value;
+	}
+	elsif ($key eq 'redir') {
+		return "" if $page ne $destpage;
+		my $safe=0;
+		if ($value !~ /^\w+:\/\//) {
+			my ($redir_page, $redir_anchor) = split /\#/, $value;
+
+			add_depends($page, $redir_page);
+			my $link=bestlink($page, $redir_page);
+			if (! length $link) {
+				return "[[meta ".gettext("redir page not found")."]]";
+			}
+
+			$value=urlto($link, $page);
+			$value.='#'.$redir_anchor if defined $redir_anchor;
+			$safe=1;
+
+			# redir cycle detection
+			$pagestate{$page}{meta}{redir}=$link;
+			my $at=$page;
+			my %seen;
+			while (exists $pagestate{$at}{meta}{redir}) {
+				if ($seen{$at}) {
+					return "[[meta ".gettext("redir cycle is not allowed")."]]";
+				}
+				$seen{$at}=1;
+				$at=$pagestate{$at}{meta}{redir};
+			}
 		}
 		else {
-			# hidden WikiLink
-			push @{$IkiWiki::links{$page}}, $value;
+			$value=encode_entities($value);
+		}
+		my $delay=int(exists $params{delay} ? $params{delay} : 0);
+		my $redir="<meta http-equiv=\"refresh\" content=\"$delay; URL=$value\">";
+		if (! $safe) {
+			$redir=scrub($redir);
 		}
+		push @{$meta{$page}}, $redir;
 	}
-	elsif ($key eq 'title') {
-		$title{$page}=escapeHTML($value);
+	elsif ($key eq 'link') {
+		return "[[meta ".gettext("link is no longer supported")."]]";
 	}
 	else {
-		$meta{$page}='' unless exists $meta{$page};
-		$meta{$page}.="<meta name=\"".escapeHTML($key)."\" content=\"".escapeHTML($value)."\" />\n";
+		push @{$meta{$page}}, scrub('<meta name="'.encode_entities($key).
+			'" content="'.encode_entities($value).'" />');
+		if ($key eq 'author') {
+			$author{$page}=$value;
+		}
+		elsif ($key eq 'authorurl') {
+			$authorurl{$page}=$value;
+		}
 	}
 
 	return "";
 } # }}}
 
-sub pagetemplate ($$) { #{{{
-        my $page=shift;
-        my $template=shift;
+sub pagetemplate (@) { #{{{
+	my %params=@_;
+        my $page=$params{page};
+        my $destpage=$params{destpage};
+        my $template=$params{template};
 
-	$template->param(meta => $meta{$page}) if exists $meta{$page};
-	$template->param(title => $title{$page}) if exists $title{$page};
+	if (exists $meta{$page} && $template->query(name => "meta")) {
+		# avoid duplicate meta lines
+		my %seen;
+		$template->param(meta => join("\n", grep { (! $seen{$_}) && ($seen{$_}=1) } @{$meta{$page}}));
+	}
+	if (exists $title{$page} && $template->query(name => "title")) {
+		$template->param(title => $title{$page});
+		$template->param(title_overridden => 1);
+	}
+	$template->param(permalink => $permalink{$page})
+		if exists $permalink{$page} && $template->query(name => "permalink");
+	$template->param(author => $author{$page})
+		if exists $author{$page} && $template->query(name => "author");
+	$template->param(authorurl => $authorurl{$page})
+		if exists $authorurl{$page} && $template->query(name => "authorurl");
+		
+	if ($page ne $destpage &&
+	    ((exists $license{$page}   && ! exists $license{$destpage}) ||
+	     (exists $copyright{$page} && ! exists $copyright{$destpage}))) {
+		# Force a scan of the destpage to get its copyright/license
+		# info. If the info is declared after an inline, it will
+		# otherwise not be available at this point.
+		IkiWiki::scan($pagesources{$destpage});
+	}
+
+	if (exists $license{$page} && $template->query(name => "license") &&
+	    ($page eq $destpage || ! exists $license{$destpage} ||
+	     $license{$page} ne $license{$destpage})) {
+		$template->param(license => IkiWiki::linkify($page, $destpage, $license{$page}));
+	}
+	if (exists $copyright{$page} && $template->query(name => "copyright") &&
+	    ($page eq $destpage || ! exists $copyright{$destpage} ||
+	     $copyright{$page} ne $copyright{$destpage})) {
+		$template->param(copyright => IkiWiki::linkify($page, $destpage, $copyright{$page}));
+	}
 } # }}}
 
 1