X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=inc%2F3rdparty%2Fhtmlpurifier%2FHTMLPurifier%2FAttrDef%2FHTML%2FLinkTypes.php;fp=inc%2F3rdparty%2Fhtmlpurifier%2FHTMLPurifier%2FAttrDef%2FHTML%2FLinkTypes.php;h=3f56934ffc6db2a0041f047f5007d9caea93ee0a;hb=d4949327efa15b492cab1bef3fe074290a328a17;hp=0000000000000000000000000000000000000000;hpb=c9bd17a1007bb78e5de0775efca01df0fb515031;p=github%2Fwallabag%2Fwallabag.git

diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php
new file mode 100644
index 00000000..3f56934f
--- /dev/null
+++ b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrDef/HTML/LinkTypes.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+ * Validates a rel/rev link attribute against a directive of allowed values
+ * @note We cannot use Enum because link types allow multiple
+ *       values.
+ * @note Assumes link types are ASCII text
+ */
+class HTMLPurifier_AttrDef_HTML_LinkTypes extends HTMLPurifier_AttrDef
+{
+
+    /**
+     * Name config attribute to pull.
+     * @type string
+     */
+    protected $name;
+
+    /**
+     * @param string $name
+     */
+    public function __construct($name)
+    {
+        $configLookup = array(
+            'rel' => 'AllowedRel',
+            'rev' => 'AllowedRev'
+        );
+        if (!isset($configLookup[$name])) {
+            trigger_error(
+                'Unrecognized attribute name for link ' .
+                'relationship.',
+                E_USER_ERROR
+            );
+            return;
+        }
+        $this->name = $configLookup[$name];
+    }
+
+    /**
+     * @param string $string
+     * @param HTMLPurifier_Config $config
+     * @param HTMLPurifier_Context $context
+     * @return bool|string
+     */
+    public function validate($string, $config, $context)
+    {
+        $allowed = $config->get('Attr.' . $this->name);
+        if (empty($allowed)) {
+            return false;
+        }
+
+        $string = $this->parseCDATA($string);
+        $parts = explode(' ', $string);
+
+        // lookup to prevent duplicates
+        $ret_lookup = array();
+        foreach ($parts as $part) {
+            $part = strtolower(trim($part));
+            if (!isset($allowed[$part])) {
+                continue;
+            }
+            $ret_lookup[$part] = true;
+        }
+
+        if (empty($ret_lookup)) {
+            return false;
+        }
+        $string = implode(' ', array_keys($ret_lookup));
+        return $string;
+    }
+}
+
+// vim: et sw=4 sts=4