aboutsummaryrefslogtreecommitdiffstats
path: root/library/HTMLPurifier/AttrTransform/Nofollow.php
diff options
context:
space:
mode:
authorfriendica <info@friendica.com>2015-01-01 22:18:27 -0800
committerfriendica <info@friendica.com>2015-01-01 22:18:27 -0800
commita0052f0176bd079e6a94baec59fea2ec5a8d651e (patch)
treec323edd823681bc2e8ca757e7eaf8354d42c7b51 /library/HTMLPurifier/AttrTransform/Nofollow.php
parent545e47933a0816699c68d98a7742a03260d6a54f (diff)
downloadvolse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.tar.gz
volse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.tar.bz2
volse-hubzilla-a0052f0176bd079e6a94baec59fea2ec5a8d651e.zip
htmlpurifier update - compatibility issue with language library autoloader
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
new file mode 100644
index 000000000..1057ebee1
--- /dev/null
+++ 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