:arrow_up: Update HTML Purifier library.

Updated HTML Purifier from 4.6.0 to 4.9.2 with better PHP7 compatibility.
Used composer to manage this library.

1 files changed, 0 insertions, 74 deletions

diff --git a/library/HTMLPurifier/AttrDef/CSS/URI.php b/library/HTMLPurifier/AttrDef/CSS/URI.php
deleted file mode 100644
index f9434230e..000000000
--- a/library/HTMLPurifier/AttrDef/CSS/URI.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-
-/**
- * Validates a URI in CSS syntax, which uses url('http://example.com')
- * @note While theoretically speaking a URI in a CSS document could
- *       be non-embedded, as of CSS2 there is no such usage so we're
- *       generalizing it. This may need to be changed in the future.
- * @warning Since HTMLPurifier_AttrDef_CSS blindly uses semicolons as
- *          the separator, you cannot put a literal semicolon in
- *          in the URI. Try percent encoding it, in that case.
- */
-class HTMLPurifier_AttrDef_CSS_URI extends HTMLPurifier_AttrDef_URI
-{
-
-    public function __construct()
-    {
-        parent::__construct(true); // always embedded
-    }
-
-    /**
-     * @param string $uri_string
-     * @param HTMLPurifier_Config $config
-     * @param HTMLPurifier_Context $context
-     * @return bool|string
-     */
-    public function validate($uri_string, $config, $context)
-    {
-        // parse the URI out of the string and then pass it onto
-        // the parent object
-
-        $uri_string = $this->parseCDATA($uri_string);
-        if (strpos($uri_string, 'url(') !== 0) {
-            return false;
-        }
-        $uri_string = substr($uri_string, 4);
-        $new_length = strlen($uri_string) - 1;
-        if ($uri_string[$new_length] != ')') {
-            return false;
-        }
-        $uri = trim(substr($uri_string, 0, $new_length));
-
-        if (!empty($uri) && ($uri[0] == "'" || $uri[0] == '"')) {
-            $quote = $uri[0];
-            $new_length = strlen($uri) - 1;
-            if ($uri[$new_length] !== $quote) {
-                return false;
-            }
-            $uri = substr($uri, 1, $new_length - 1);
-        }
-
-        $uri = $this->expandCSSEscape($uri);
-
-        $result = parent::validate($uri, $config, $context);
-
-        if ($result === false) {
-            return false;
-        }
-
-        // extra sanity check; should have been done by URI
-        $result = str_replace(array('"', "\\", "\n", "\x0c", "\r"), "", $result);
-
-        // suspicious characters are ()'; we're going to percent encode
-        // them for safety.
-        $result = str_replace(array('(', ')', "'"), array('%28', '%29', '%27'), $result);
-
-        // there's an extra bug where ampersands lose their escaping on
-        // an innerHTML cycle, so a very unlucky query parameter could
-        // then change the meaning of the URL.  Unfortunately, there's
-        // not much we can do about that...
-        return "url(\"$result\")";
-    }
-}
-
-// vim: et sw=4 sts=4