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authorChristian Vogeley <christian.vogeley@hotmail.de>2015-01-11 16:22:59 +0100
committerChristian Vogeley <christian.vogeley@hotmail.de>2015-01-11 16:22:59 +0100
commitf0c7612bcd49d32e408e67ac1829ee891c677f7e (patch)
treed4cff4aa2d728524b631776ffffee71f42056421 /library/HTMLPurifier/AttrTransform/Nofollow.php
parent43f143a211c75138d09ceb89acc48ea7d5c31ca9 (diff)
parent10102ac2ac4d5b02012a9794e23656717ab05556 (diff)
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Merge remote-tracking branch 'upstream/master'
Conflicts: doc/html/classRedmatrix_1_1Import_1_1Import-members.html doc/html/classRedmatrix_1_1Import_1_1Import.js
Diffstat (limited to 'library/HTMLPurifier/AttrTransform/Nofollow.php')
-rw-r--r--library/HTMLPurifier/AttrTransform/Nofollow.php52
1 files changed, 52 insertions, 0 deletions
diff --git a/library/HTMLPurifier/AttrTransform/Nofollow.php b/library/HTMLPurifier/AttrTransform/Nofollow.php
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+++ b/library/HTMLPurifier/AttrTransform/Nofollow.php
@@ -0,0 +1,52 @@
+<?php
+
+// must be called POST validation
+
+/**
+ * Adds rel="nofollow" to all outbound links. This transform is
+ * only attached if Attr.Nofollow is TRUE.
+ */
+class HTMLPurifier_AttrTransform_Nofollow extends HTMLPurifier_AttrTransform
+{
+ /**
+ * @type HTMLPurifier_URIParser
+ */
+ private $parser;
+
+ public function __construct()
+ {
+ $this->parser = new HTMLPurifier_URIParser();
+ }
+
+ /**
+ * @param array $attr
+ * @param HTMLPurifier_Config $config
+ * @param HTMLPurifier_Context $context
+ * @return array
+ */
+ public function transform($attr, $config, $context)
+ {
+ if (!isset($attr['href'])) {
+ return $attr;
+ }
+
+ // XXX Kind of inefficient
+ $url = $this->parser->parse($attr['href']);
+ $scheme = $url->getSchemeObj($config, $context);
+
+ if ($scheme->browsable && !$url->isLocal($config, $context)) {
+ if (isset($attr['rel'])) {
+ $rels = explode(' ', $attr['rel']);
+ if (!in_array('nofollow', $rels)) {
+ $rels[] = 'nofollow';
+ }
+ $attr['rel'] = implode(' ', $rels);
+ } else {
+ $attr['rel'] = 'nofollow';
+ }
+ }
+ return $attr;
+ }
+}
+
+// vim: et sw=4 sts=4