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-rw-r--r--lib/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php38
1 files changed, 38 insertions, 0 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php b/lib/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php
new file mode 100644
index 000000000..a6502c749
--- /dev/null
+++ b/lib/htmlpurifier/library/HTMLPurifier/AttrTransform/TargetBlank.php
@@ -0,0 +1,38 @@
+<?php
+
+// must be called POST validation
+
+/**
+ * Adds target="blank" to all outbound links. This transform is
+ * only attached if Attr.TargetBlank is TRUE. This works regardless
+ * of whether or not Attr.AllowedFrameTargets
+ */
+class HTMLPurifier_AttrTransform_TargetBlank extends HTMLPurifier_AttrTransform
+{
+ private $parser;
+
+ public function __construct() {
+ $this->parser = new HTMLPurifier_URIParser();
+ }
+
+ public function transform($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 && !$url->isBenign($config, $context)) {
+ $attr['target'] = 'blank';
+ }
+
+ return $attr;
+
+ }
+
+}
+
+// vim: et sw=4 sts=4