diff options
Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php')
-rw-r--r-- | lib/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php b/lib/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php deleted file mode 100644 index f46ab2630..000000000 --- a/lib/htmlpurifier/library/HTMLPurifier/URIFilter/MakeAbsolute.php +++ /dev/null @@ -1,114 +0,0 @@ -<?php - -// does not support network paths - -class HTMLPurifier_URIFilter_MakeAbsolute extends HTMLPurifier_URIFilter -{ - public $name = 'MakeAbsolute'; - protected $base; - protected $basePathStack = array(); - public function prepare($config) { - $def = $config->getDefinition('URI'); - $this->base = $def->base; - if (is_null($this->base)) { - trigger_error('URI.MakeAbsolute is being ignored due to lack of value for URI.Base configuration', E_USER_WARNING); - return false; - } - $this->base->fragment = null; // fragment is invalid for base URI - $stack = explode('/', $this->base->path); - array_pop($stack); // discard last segment - $stack = $this->_collapseStack($stack); // do pre-parsing - $this->basePathStack = $stack; - return true; - } - public function filter(&$uri, $config, $context) { - if (is_null($this->base)) return true; // abort early - if ( - $uri->path === '' && is_null($uri->scheme) && - is_null($uri->host) && is_null($uri->query) && is_null($uri->fragment) - ) { - // reference to current document - $uri = clone $this->base; - return true; - } - if (!is_null($uri->scheme)) { - // absolute URI already: don't change - if (!is_null($uri->host)) return true; - $scheme_obj = $uri->getSchemeObj($config, $context); - if (!$scheme_obj) { - // scheme not recognized - return false; - } - if (!$scheme_obj->hierarchical) { - // non-hierarchal URI with explicit scheme, don't change - return true; - } - // special case: had a scheme but always is hierarchical and had no authority - } - if (!is_null($uri->host)) { - // network path, don't bother - return true; - } - if ($uri->path === '') { - $uri->path = $this->base->path; - } elseif ($uri->path[0] !== '/') { - // relative path, needs more complicated processing - $stack = explode('/', $uri->path); - $new_stack = array_merge($this->basePathStack, $stack); - if ($new_stack[0] !== '' && !is_null($this->base->host)) { - array_unshift($new_stack, ''); - } - $new_stack = $this->_collapseStack($new_stack); - $uri->path = implode('/', $new_stack); - } else { - // absolute path, but still we should collapse - $uri->path = implode('/', $this->_collapseStack(explode('/', $uri->path))); - } - // re-combine - $uri->scheme = $this->base->scheme; - if (is_null($uri->userinfo)) $uri->userinfo = $this->base->userinfo; - if (is_null($uri->host)) $uri->host = $this->base->host; - if (is_null($uri->port)) $uri->port = $this->base->port; - return true; - } - - /** - * Resolve dots and double-dots in a path stack - */ - private function _collapseStack($stack) { - $result = array(); - $is_folder = false; - for ($i = 0; isset($stack[$i]); $i++) { - $is_folder = false; - // absorb an internally duplicated slash - if ($stack[$i] == '' && $i && isset($stack[$i+1])) continue; - if ($stack[$i] == '..') { - if (!empty($result)) { - $segment = array_pop($result); - if ($segment === '' && empty($result)) { - // error case: attempted to back out too far: - // restore the leading slash - $result[] = ''; - } elseif ($segment === '..') { - $result[] = '..'; // cannot remove .. with .. - } - } else { - // relative path, preserve the double-dots - $result[] = '..'; - } - $is_folder = true; - continue; - } - if ($stack[$i] == '.') { - // silently absorb - $is_folder = true; - continue; - } - $result[] = $stack[$i]; - } - if ($is_folder) $result[] = ''; - return $result; - } -} - -// vim: et sw=4 sts=4 |