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author | zotlabs <mike@macgirvin.com> | 2017-03-27 14:11:25 -0700 |
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committer | zotlabs <mike@macgirvin.com> | 2017-03-27 14:11:25 -0700 |
commit | 8292553a2087a412e0b10f5593d461d371169adb (patch) | |
tree | 2648714d80a19154ec19defa92aaa3229cae23c6 /library/HTMLPurifier/AttrDef/CSS/URI.php | |
parent | 5cbf60320355845e2abdec0422055d3fe321e84e (diff) | |
parent | 6375401e0af6c52d151dd2b944aa6a054b8ddc05 (diff) | |
download | volse-hubzilla-8292553a2087a412e0b10f5593d461d371169adb.tar.gz volse-hubzilla-8292553a2087a412e0b10f5593d461d371169adb.tar.bz2 volse-hubzilla-8292553a2087a412e0b10f5593d461d371169adb.zip |
Merge branch 'dev' of https://github.com/redmatrix/hubzilla into xdev_merge
Diffstat (limited to 'library/HTMLPurifier/AttrDef/CSS/URI.php')
-rw-r--r-- | library/HTMLPurifier/AttrDef/CSS/URI.php | 74 |
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 |