name = $name; $this->set( $value, $attr ); } /** * Sets a cookie. Used before a request to set up any individual * cookies. Used internally after a request to parse the * Set-Cookie headers. * * @param $value String: the value of the cookie * @param $attr Array: possible key/values: * expires A date string * path The path this cookie is used on * domain Domain this cookie is used on */ public function set( $value, $attr ) { $this->value = $value; if ( isset( $attr['expires'] ) ) { $this->isSessionKey = false; $this->expires = strtotime( $attr['expires'] ); } if ( isset( $attr['path'] ) ) { $this->path = $attr['path']; } else { $this->path = '/'; } if ( isset( $attr['domain'] ) ) { if ( self::validateCookieDomain( $attr['domain'] ) ) { $this->domain = $attr['domain']; } } else { throw new MWException( 'You must specify a domain.' ); } } /** * Return the true if the cookie is valid is valid. Otherwise, * false. The uses a method similar to IE cookie security * described here: * http://kuza55.blogspot.com/2008/02/understanding-cookie-security.html * A better method might be to use a blacklist like * http://publicsuffix.org/ * * @fixme fails to detect 3-letter top-level domains * @fixme fails to detect 2-letter top-level domains for single-domain use (probably not a big problem in practice, but there are test cases) * * @param $domain String: the domain to validate * @param $originDomain String: (optional) the domain the cookie originates from * @return Boolean */ public static function validateCookieDomain( $domain, $originDomain = null ) { // Don't allow a trailing dot if ( substr( $domain, -1 ) == '.' ) { return false; } $dc = explode( ".", $domain ); // Only allow full, valid IP addresses if ( preg_match( '/^[0-9.]+$/', $domain ) ) { if ( count( $dc ) != 4 ) { return false; } if ( ip2long( $domain ) === false ) { return false; } if ( $originDomain == null || $originDomain == $domain ) { return true; } } // Don't allow cookies for "co.uk" or "gov.uk", etc, but allow "supermarket.uk" if ( strrpos( $domain, "." ) - strlen( $domain ) == -3 ) { if ( ( count( $dc ) == 2 && strlen( $dc[0] ) <= 2 ) || ( count( $dc ) == 3 && strlen( $dc[0] ) == "" && strlen( $dc[1] ) <= 2 ) ) { return false; } if ( ( count( $dc ) == 2 || ( count( $dc ) == 3 && $dc[0] == '' ) ) && preg_match( '/(com|net|org|gov|edu)\...$/', $domain ) ) { return false; } } if ( $originDomain != null ) { if ( substr( $domain, 0, 1 ) != '.' && $domain != $originDomain ) { return false; } if ( substr( $domain, 0, 1 ) == '.' && substr_compare( $originDomain, $domain, -strlen( $domain ), strlen( $domain ), true ) != 0 ) { return false; } } return true; } /** * Serialize the cookie jar into a format useful for HTTP Request headers. * * @param $path String: the path that will be used. Required. * @param $domain String: the domain that will be used. Required. * @return String */ public function serializeToHttpRequest( $path, $domain ) { $ret = ''; if ( $this->canServeDomain( $domain ) && $this->canServePath( $path ) && $this->isUnExpired() ) { $ret = $this->name . '=' . $this->value; } return $ret; } protected function canServeDomain( $domain ) { if ( $domain == $this->domain || ( strlen( $domain ) > strlen( $this->domain ) && substr( $this->domain, 0, 1 ) == '.' && substr_compare( $domain, $this->domain, -strlen( $this->domain ), strlen( $this->domain ), true ) == 0 ) ) { return true; } return false; } protected function canServePath( $path ) { if ( $this->path && substr_compare( $this->path, $path, 0, strlen( $this->path ) ) == 0 ) { return true; } return false; } protected function isUnExpired() { if ( $this->isSessionKey || $this->expires > time() ) { return true; } return false; } } class CookieJar { private $cookie = array(); /** * Set a cookie in the cookie jar. Make sure only one cookie per-name exists. * @see Cookie::set() */ public function setCookie ( $name, $value, $attr ) { /* cookies: case insensitive, so this should work. * We'll still send the cookies back in the same case we got them, though. */ $index = strtoupper( $name ); if ( isset( $this->cookie[$index] ) ) { $this->cookie[$index]->set( $value, $attr ); } else { $this->cookie[$index] = new Cookie( $name, $value, $attr ); } } /** * @see Cookie::serializeToHttpRequest */ public function serializeToHttpRequest( $path, $domain ) { $cookies = array(); foreach ( $this->cookie as $c ) { $serialized = $c->serializeToHttpRequest( $path, $domain ); if ( $serialized ) { $cookies[] = $serialized; } } return implode( '; ', $cookies ); } /** * Parse the content of an Set-Cookie HTTP Response header. * * @param $cookie String * @param $domain String: cookie's domain */ public function parseCookieResponseHeader ( $cookie, $domain ) { $len = strlen( 'Set-Cookie:' ); if ( substr_compare( 'Set-Cookie:', $cookie, 0, $len, true ) === 0 ) { $cookie = substr( $cookie, $len ); } $bit = array_map( 'trim', explode( ';', $cookie ) ); if ( count( $bit ) >= 1 ) { list( $name, $value ) = explode( '=', array_shift( $bit ), 2 ); $attr = array(); foreach ( $bit as $piece ) { $parts = explode( '=', $piece ); if ( count( $parts ) > 1 ) { $attr[strtolower( $parts[0] )] = $parts[1]; } else { $attr[strtolower( $parts[0] )] = true; } } if ( !isset( $attr['domain'] ) ) { $attr['domain'] = $domain; } elseif ( !Cookie::validateCookieDomain( $attr['domain'], $domain ) ) { return null; } $this->setCookie( $name, $value, $attr ); } } }