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-rw-r--r--library/HTMLPurifier/AttrDef/CSS/URI.php74
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