mirror of
https://github.com/EGroupware/egroupware.git
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1083 lines
35 KiB
PHP
1083 lines
35 KiB
PHP
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<?php
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require_once 'Horde/String.php';
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/**
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* The Browser:: class provides capability information for the current
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* web client. Browser identification is performed by examining the
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* HTTP_USER_AGENT environmental variable provide by the web server.
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*
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* $Horde: framework/Browser/Browser.php,v 1.166 2005/02/22 20:43:58 eraserhd Exp $
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*
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* Copyright 1999-2005 Chuck Hagenbuch <chuck@horde.org>
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* Copyright 1999-2005 Jon Parise <jon@horde.org>
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*
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* See the enclosed file COPYING for license information (LGPL). If you
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* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
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*
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* @author Chuck Hagenbuch <chuck@horde.org>
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* @author Jon Parise <jon@horde.org>
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* @since Horde 1.3
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* @package Horde_Browser
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*/
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class Browser {
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/**
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* Major version number.
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*
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* @var integer $_majorVersion
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*/
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var $_majorVersion = 0;
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/**
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* Minor version number.
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*
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* @var integer $_minorVersion
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*/
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var $_minorVersion = 0;
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/**
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* Browser name.
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*
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* @var string $_browser
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*/
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var $_browser = '';
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/**
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* Full user agent string.
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*
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* @var string $_agent
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*/
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var $_agent = '';
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/**
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* Lower-case user agent string.
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*
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* @var string $_agent
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*/
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var $_lowerAgent = '';
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/**
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* HTTP_ACCEPT string
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*
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* @var string $_accept
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*/
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var $_accept = '';
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/**
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* Platform the browser is running on.
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*
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* @var string $_platform
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*/
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var $_platform = '';
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/**
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* Known robots.
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*
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* @var array $_robots
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*/
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var $_robots = array(
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/* The most common ones. */
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'Googlebot',
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'msnbot',
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'Slurp',
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'Yahoo',
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/* The rest alphabetically. */
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'Arachnoidea',
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'ArchitextSpider',
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'Ask Jeeves',
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'B-l-i-t-z-Bot',
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'ConveraCrawler',
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'ExtractorPro',
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'FAST-WebCrawler',
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'FDSE robot',
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'fido',
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'geckobot',
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'Gigabot',
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'Girafabot',
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'grub-client',
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'Gulliver',
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'ia_archiver',
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'InfoSeek',
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'KIT-Fireball',
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'LEIA',
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'Lycos_Spider',
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'Mediapartners-Google',
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'MuscatFerret',
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'NaverBot',
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'polybot',
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'Pompos',
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'Scooter',
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'Teoma',
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'TurnitinBot',
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'Ultraseek',
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'ViolaBot',
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'webbandit',
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'www.almaden.ibm.com/cs/crawler',
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'ZyBorg',
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);
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/**
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* Is this a mobile browser?
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*
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* @var boolean $_mobile
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*/
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var $_mobile = false;
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/**
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* Features.
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*
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* @var array $_features
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*/
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var $_features = array(
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'html' => true,
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'hdml' => false,
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'wml' => false,
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'images' => true,
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'iframes' => false,
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'frames' => true,
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'tables' => true,
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'java' => true,
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'javascript' => true,
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'dom' => false,
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'utf' => false,
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'rte' => false,
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'homepage' => false,
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'accesskey' => false,
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'optgroup' => false,
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'xmlhttpreq' => false,
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'cite' => false,
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);
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/**
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* Quirks
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*
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* @var array $_quirks
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*/
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var $_quirks = array(
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'avoid_popup_windows' => false,
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'break_disposition_header' => false,
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'break_disposition_filename' => false,
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'broken_multipart_form' => false,
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'buggy_compression' => false,
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'cache_same_url' => false,
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'cache_ssl_downloads' => false,
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'double_linebreak_textarea' => false,
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'empty_file_input_value' => false,
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'must_cache_forms' => false,
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'no_filename_spaces' => false,
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'no_hidden_overflow_tables' => false,
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'ow_gui_1.3' => false,
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'png_transparency' => false,
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'scrollbar_in_way' => false,
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'scroll_tds' => false,
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);
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/**
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* List of viewable image MIME subtypes.
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* This list of viewable images works for IE and Netscape/Mozilla.
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*
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* @var array $_images
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*/
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var $_images = array('jpeg', 'gif', 'png', 'pjpeg', 'x-png', 'bmp');
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/**
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/**
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* Returns a reference to the global Browser object, only creating it
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* if it doesn't already exist.
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*
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* This method must be invoked as:
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* $browser = &Browser::singleton([$userAgent[, $accept]]);
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*
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* @access public
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*
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* @param optional string $userAgent The browser string to parse.
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* @param optional string $accept The HTTP_ACCEPT settings to use.
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*
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* @return object Browser The Browser object.
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*/
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function &singleton($userAgent = null, $accept = null)
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{
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static $instances;
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if (!isset($instances)) {
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$instances = array();
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}
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$signature = serialize(array($userAgent, $accept));
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if (empty($instances[$signature])) {
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$instances[$signature] = new Browser($userAgent, $accept);
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}
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return $instances[$signature];
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}
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/**
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* Create a browser instance (Constructor).
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*
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* @access public
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*
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* @param optional string $userAgent The browser string to parse.
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* @param optional string $accept The HTTP_ACCEPT settings to use.
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*/
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function Browser($userAgent = null, $accept = null)
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{
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$this->match($userAgent, $accept);
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}
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/**
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* Parses the user agent string and inititializes the object with
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* all the known features and quirks for the given browser.
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*
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* @access public
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*
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* @param optional string $userAgent The browser string to parse.
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* @param optional string $accept The HTTP_ACCEPT settings to use.
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*/
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function match($userAgent = null, $accept = null)
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{
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// Set our agent string.
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if (is_null($userAgent)) {
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if (isset($_SERVER['HTTP_USER_AGENT'])) {
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$this->_agent = trim($_SERVER['HTTP_USER_AGENT']);
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}
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} else {
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$this->_agent = $userAgent;
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}
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$this->_lowerAgent = String::lower($this->_agent);
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// Set our accept string.
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if (is_null($accept)) {
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if (isset($_SERVER['HTTP_ACCEPT'])) {
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$this->_accept = String::lower(trim($_SERVER['HTTP_ACCEPT']));
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}
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} else {
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$this->_accept = String::lower($accept);
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}
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// Check for UTF support.
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if (isset($_SERVER['HTTP_ACCEPT_CHARSET'])) {
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$this->setFeature('utf', strpos(String::lower($_SERVER['HTTP_ACCEPT_CHARSET']), 'utf') !== false);
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}
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if (!empty($this->_agent)) {
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$this->_setPlatform();
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if (preg_match('|Opera[/ ]([0-9.]+)|', $this->_agent, $version)) {
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$this->setBrowser('opera');
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list($this->_majorVersion, $this->_minorVersion) = explode('.', $version[1]);
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$this->setFeature('javascript', true);
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$this->setQuirk('no_filename_spaces');
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switch ($this->_majorVersion) {
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case 7:
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$this->setFeature('dom');
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$this->setFeature('iframes');
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$this->setFeature('accesskey');
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$this->setFeature('optgroup');
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$this->setQuirk('double_linebreak_textarea');
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break;
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}
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} elseif (strpos($this->_lowerAgent, 'elaine/') !== false ||
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strpos($this->_lowerAgent, 'palmsource') !== false ||
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strpos($this->_lowerAgent, 'digital paths') !== false) {
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$this->setBrowser('palm');
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$this->setFeature('images', false);
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$this->setFeature('frames', false);
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$this->setFeature('javascript', false);
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$this->setQuirk('avoid_popup_windows');
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$this->_mobile = true;
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} elseif ((preg_match('|MSIE ([0-9.]+)|', $this->_agent, $version)) ||
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(preg_match('|Internet Explorer/([0-9.]+)|', $this->_agent, $version))) {
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$this->setBrowser('msie');
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$this->setQuirk('cache_ssl_downloads');
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$this->setQuirk('cache_same_url');
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$this->setQuirk('break_disposition_filename');
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if (strpos($version[1], '.') !== false) {
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list($this->_majorVersion, $this->_minorVersion) = explode('.', $version[1]);
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} else {
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$this->_majorVersion = $version[1];
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$this->_minorVersion = 0;
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}
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/* IE on Windows does not support alpha transparency in PNG
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* images. */
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if (preg_match('/windows/i', $this->_agent)) {
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$this->setQuirk('png_transparency');
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}
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/* IE 6 (pre-SP1) and 5.5 (pre-SP1) has buggy compression.
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* The versions affected are as follows:
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* 6.00.2462.0000 Internet Explorer 6 Public Preview (Beta)
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* 6.00.2479.0006 Internet Explorer 6 Public Preview (Beta)
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Refresh
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* 6.00.2600.0000 Internet Explorer 6 (Windows XP)
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* 5.50.3825.1300 Internet Explorer 5.5 Developer Preview (Beta)
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* 5.50.4030.2400 Internet Explorer 5.5 & Internet Tools Beta
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* 5.50.4134.0100 Internet Explorer 5.5 for Windows Me (4.90.3000)
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* 5.50.4134.0600 Internet Explorer 5.5
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* 5.50.4308.2900 Internet Explorer 5.5 Advanced Security Privacy Beta
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*
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* See:
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* ====
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* http://support.microsoft.com/kb/164539;
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* http://support.microsoft.com/default.aspx?scid=kb;en-us;Q312496)
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* http://support.microsoft.com/default.aspx?scid=kb;en-us;Q313712
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*/
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$ie_vers = $this->getIEVersion();
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$buggy_list = array(
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'6,00,2462,0000', '6,00,2479,0006', '6,00,2600,0000',
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'5,50,3825,1300', '5,50,4030,2400', '5,50,4134,0100',
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'5,50,4134,0600', '5,50,4308,2900'
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);
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if (!is_null($ie_vers) && in_array($ie_vers, $buggy_list)) {
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$this->setQuirk('buggy_compression');
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}
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/* Some Handhelds have their screen resolution in the
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* user agent string, which we can use to look for
|
||
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* mobile agents. */
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if (preg_match('/; (120x160|240x280|240x320)\)/', $this->_agent)) {
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$this->_mobile = true;
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}
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switch ($this->_majorVersion) {
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case 6:
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$this->setFeature('javascript', 1.4);
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$this->setFeature('dom');
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$this->setFeature('iframes');
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$this->setFeature('utf');
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$this->setFeature('rte');
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$this->setFeature('homepage');
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$this->setFeature('accesskey');
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$this->setFeature('optgroup');
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$this->setFeature('xmlhttpreq');
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$this->setQuirk('scrollbar_in_way');
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$this->setQuirk('broken_multipart_form');
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break;
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case 5:
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if ($this->getPlatform() == 'mac') {
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$this->setFeature('javascript', 1.2);
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$this->setFeature('optgroup');
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} else {
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// MSIE 5 for Windows.
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$this->setFeature('javascript', 1.4);
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$this->setFeature('dom');
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$this->setFeature('xmlhttpreq');
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if ($this->_minorVersion >= 5) {
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$this->setFeature('rte');
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}
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}
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$this->setFeature('iframes');
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$this->setFeature('utf');
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$this->setFeature('homepage');
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||
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$this->setFeature('accesskey');
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||
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if ($this->_minorVersion == 5) {
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$this->setQuirk('break_disposition_header');
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||
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$this->setQuirk('broken_multipart_form');
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||
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}
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break;
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|
|
case 4:
|
||
|
|
$this->setFeature('javascript', 1.2);
|
||
|
|
$this->setFeature('accesskey');
|
||
|
|
if ($this->_minorVersion > 0) {
|
||
|
|
$this->setFeature('utf');
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 3:
|
||
|
|
$this->setFeature('javascript', 1.1);
|
||
|
|
$this->setQuirk('avoid_popup_windows');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} elseif (preg_match('|ANTFresco/([0-9]+)|', $this->_agent, $version)) {
|
||
|
|
$this->setBrowser('fresco');
|
||
|
|
$this->setFeature('javascript', 1.1);
|
||
|
|
$this->setQuirk('avoid_popup_windows');
|
||
|
|
} elseif (strpos($this->_lowerAgent, 'avantgo') !== false) {
|
||
|
|
$this->setBrowser('avantgo');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (preg_match('|Konqueror/([0-9]+)|', $this->_agent, $version) ||
|
||
|
|
preg_match('|Safari/([0-9]+)\.?([0-9]+)?|', $this->_agent, $version)) {
|
||
|
|
// Konqueror and Apple's Safari both use the KHTML
|
||
|
|
// rendering engine.
|
||
|
|
$this->setBrowser('konqueror');
|
||
|
|
$this->setQuirk('empty_file_input_value');
|
||
|
|
$this->setQuirk('no_hidden_overflow_tables');
|
||
|
|
$this->_majorVersion = $version[1];
|
||
|
|
if (isset($version[2])) {
|
||
|
|
$this->_minorVersion = $version[2];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (strpos($this->_agent, 'Safari') !== false &&
|
||
|
|
$this->_majorVersion >= 60) {
|
||
|
|
// Safari.
|
||
|
|
$this->setFeature('utf');
|
||
|
|
$this->setFeature('javascript', 1.4);
|
||
|
|
$this->setFeature('dom');
|
||
|
|
$this->setFeature('iframes');
|
||
|
|
if ($this->_majorVersion > 125 ||
|
||
|
|
($this->_majorVersion == 125 &&
|
||
|
|
$this->_minorVersion >= 1)) {
|
||
|
|
$this->setFeature('utf');
|
||
|
|
$this->setFeature('accesskey');
|
||
|
|
$this->setFeature('xmlhttpreq');
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// Konqueror.
|
||
|
|
$this->setFeature('javascript', 1.1);
|
||
|
|
switch ($this->_majorVersion) {
|
||
|
|
case 3:
|
||
|
|
$this->setFeature('dom');
|
||
|
|
$this->setFeature('iframes');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} elseif (preg_match('|Mozilla/([0-9.]+)|', $this->_agent, $version)) {
|
||
|
|
$this->setBrowser('mozilla');
|
||
|
|
$this->setQuirk('must_cache_forms');
|
||
|
|
|
||
|
|
list($this->_majorVersion, $this->_minorVersion) = explode('.', $version[1]);
|
||
|
|
switch ($this->_majorVersion) {
|
||
|
|
case 5:
|
||
|
|
if ($this->getPlatform() == 'win') {
|
||
|
|
$this->setQuirk('break_disposition_filename');
|
||
|
|
}
|
||
|
|
$this->setFeature('javascript', 1.4);
|
||
|
|
$this->setFeature('dom');
|
||
|
|
$this->setFeature('accesskey');
|
||
|
|
$this->setFeature('optgroup');
|
||
|
|
$this->setFeature('xmlhttpreq');
|
||
|
|
$this->setFeature('cite');
|
||
|
|
if (preg_match('|rv:(.*)\)|', $this->_agent, $revision)) {
|
||
|
|
if ($revision[1] >= 1) {
|
||
|
|
$this->setFeature('iframes');
|
||
|
|
}
|
||
|
|
if ($revision[1] >= 1.3) {
|
||
|
|
$this->setFeature('rte');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 4:
|
||
|
|
$this->setFeature('javascript', 1.3);
|
||
|
|
$this->setQuirk('buggy_compression');
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 3:
|
||
|
|
default:
|
||
|
|
$this->setFeature('javascript', 1);
|
||
|
|
$this->setQuirk('buggy_compression');
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
} elseif (preg_match('|Lynx/([0-9]+)|', $this->_agent, $version)) {
|
||
|
|
$this->setBrowser('lynx');
|
||
|
|
$this->setFeature('images', false);
|
||
|
|
$this->setFeature('frames', false);
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
$this->setQuirk('avoid_popup_windows');
|
||
|
|
} elseif (preg_match('|Links \(([0-9]+)|', $this->_agent, $version)) {
|
||
|
|
$this->setBrowser('links');
|
||
|
|
$this->setFeature('images', false);
|
||
|
|
$this->setFeature('frames', false);
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
$this->setQuirk('avoid_popup_windows');
|
||
|
|
} elseif (preg_match('|HotJava/([0-9]+)|', $this->_agent, $version)) {
|
||
|
|
$this->setBrowser('hotjava');
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
} elseif (strpos($this->_agent, 'UP/') !== false ||
|
||
|
|
strpos($this->_agent, 'UP.B') !== false ||
|
||
|
|
strpos($this->_agent, 'UP.L') !== false) {
|
||
|
|
$this->setBrowser('up');
|
||
|
|
$this->setFeature('html', false);
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
$this->setFeature('hdml');
|
||
|
|
$this->setFeature('wml');
|
||
|
|
|
||
|
|
if (strpos($this->_agent, 'GUI') !== false &&
|
||
|
|
strpos($this->_agent, 'UP.Link') !== false) {
|
||
|
|
/* The device accepts Openwave GUI extensions for
|
||
|
|
* WML 1.3. Non-UP.Link gateways sometimes have
|
||
|
|
* problems, so exclude them. */
|
||
|
|
$this->setQuirk('ow_gui_1.3');
|
||
|
|
}
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_agent, 'Xiino/') !== false) {
|
||
|
|
$this->setBrowser('xiino');
|
||
|
|
$this->setFeature('hdml');
|
||
|
|
$this->setFeature('wml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_agent, 'Palmscape/') !== false) {
|
||
|
|
$this->setBrowser('palmscape');
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
$this->setFeature('hdml');
|
||
|
|
$this->setFeature('wml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_agent, 'Nokia') !== false) {
|
||
|
|
$this->setBrowser('nokia');
|
||
|
|
$this->setFeature('html', false);
|
||
|
|
$this->setFeature('wml');
|
||
|
|
$this->setFeature('xhtml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_agent, 'Ericsson') !== false) {
|
||
|
|
$this->setBrowser('ericsson');
|
||
|
|
$this->setFeature('html', false);
|
||
|
|
$this->setFeature('wml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_lowerAgent, 'wap') !== false) {
|
||
|
|
$this->setBrowser('wap');
|
||
|
|
$this->setFeature('html', false);
|
||
|
|
$this->setFeature('javascript', false);
|
||
|
|
$this->setFeature('hdml');
|
||
|
|
$this->setFeature('wml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_lowerAgent, 'docomo') !== false ||
|
||
|
|
strpos($this->_lowerAgent, 'portalmmm') !== false) {
|
||
|
|
$this->setBrowser('imode');
|
||
|
|
$this->setFeature('images', false);
|
||
|
|
$this->_mobile = true;
|
||
|
|
} elseif (strpos($this->_lowerAgent, 'j-') !== false) {
|
||
|
|
$this->setBrowser('mml');
|
||
|
|
$this->_mobile = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Match the platform of the browser.
|
||
|
|
*
|
||
|
|
* This is a pretty simplistic implementation, but it's intended
|
||
|
|
* to let us tell what line breaks to send, so it's good enough
|
||
|
|
* for its purpose.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @since Horde 2.2
|
||
|
|
*/
|
||
|
|
function _setPlatform()
|
||
|
|
{
|
||
|
|
if (strpos($this->_lowerAgent, 'wind') !== false) {
|
||
|
|
$this->_platform = 'win';
|
||
|
|
} elseif (strpos($this->_lowerAgent, 'mac') !== false) {
|
||
|
|
$this->_platform = 'mac';
|
||
|
|
} else {
|
||
|
|
$this->_platform = 'unix';
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the currently matched platform.
|
||
|
|
*
|
||
|
|
* @return string The user's platform.
|
||
|
|
*
|
||
|
|
* @since Horde 2.2
|
||
|
|
*/
|
||
|
|
function getPlatform()
|
||
|
|
{
|
||
|
|
return $this->_platform;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $browser The browser to set as current.
|
||
|
|
*/
|
||
|
|
function setBrowser($browser)
|
||
|
|
{
|
||
|
|
$this->_browser = $browser;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if the given browser is the same as the current.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $browser The browser to check.
|
||
|
|
*
|
||
|
|
* @return boolean Is the given browser the same as the current?
|
||
|
|
*/
|
||
|
|
function isBrowser($browser)
|
||
|
|
{
|
||
|
|
return ($this->_browser === $browser);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Do we consider the current browser to be a mobile device?
|
||
|
|
*
|
||
|
|
* @return boolean True if we do, false if we don't.
|
||
|
|
*/
|
||
|
|
function isMobile()
|
||
|
|
{
|
||
|
|
return $this->_mobile;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines if the browser is a robot or not.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return boolean True if browser is a known robot.
|
||
|
|
*/
|
||
|
|
function isRobot()
|
||
|
|
{
|
||
|
|
foreach ($this->_robots as $robot) {
|
||
|
|
if (strpos($this->_agent, $robot) !== false) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return string The current browser.
|
||
|
|
*/
|
||
|
|
function getBrowser()
|
||
|
|
{
|
||
|
|
return $this->_browser;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve the current browser's major version.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return integer The current browser's major version.
|
||
|
|
*/
|
||
|
|
function getMajor()
|
||
|
|
{
|
||
|
|
return $this->_majorVersion;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve the current browser's minor version.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return integer The current browser's minor version.
|
||
|
|
*/
|
||
|
|
function getMinor()
|
||
|
|
{
|
||
|
|
return $this->_minorVersion;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieve the current browser's version.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return string The current browser's version.
|
||
|
|
*/
|
||
|
|
function getVersion()
|
||
|
|
{
|
||
|
|
return $this->_majorVersion . '.' . $this->_minorVersion;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the full browser agent string.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return string The browser agent string.
|
||
|
|
*/
|
||
|
|
function getAgentString()
|
||
|
|
{
|
||
|
|
return $this->_agent;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set unique behavior for the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $quirk The behavior to set.
|
||
|
|
* @param optional string $value Special behavior parameter.
|
||
|
|
*/
|
||
|
|
function setQuirk($quirk, $value = true)
|
||
|
|
{
|
||
|
|
$this->_quirks[$quirk] = $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check unique behavior for the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $quirk The behavior to check.
|
||
|
|
*
|
||
|
|
* @return boolean Does the browser have the behavior set?
|
||
|
|
*/
|
||
|
|
function hasQuirk($quirk)
|
||
|
|
{
|
||
|
|
return !empty($this->_quirks[$quirk]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retreive unique behavior for the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $quirk The behavior to retreive.
|
||
|
|
*
|
||
|
|
* @return string The value for the requested behavior.
|
||
|
|
*/
|
||
|
|
function getQuirk($quirk)
|
||
|
|
{
|
||
|
|
return isset($this->_quirks[$quirk])
|
||
|
|
? $this->_quirks[$quirk]
|
||
|
|
: null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set capabilities for the current browser.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $feature The capability to set.
|
||
|
|
* @param optional string $value Special capability parameter.
|
||
|
|
*/
|
||
|
|
function setFeature($feature, $value = true)
|
||
|
|
{
|
||
|
|
$this->_features[$feature] = $value;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check the current browser capabilities.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $feature The capability to check.
|
||
|
|
*
|
||
|
|
* @return boolean Does the browser have the capability set?
|
||
|
|
*/
|
||
|
|
function hasFeature($feature)
|
||
|
|
{
|
||
|
|
return !empty($this->_features[$feature]);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retreive the current browser capability.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $feature The capability to retreive.
|
||
|
|
*
|
||
|
|
* @return string The value of the requested capability.
|
||
|
|
*/
|
||
|
|
function getFeature($feature)
|
||
|
|
{
|
||
|
|
return isset($this->_features[$feature])
|
||
|
|
? $this->_features[$feature]
|
||
|
|
: null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if we are using a secure (SSL) connection.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return boolean True if using SSL, false if not.
|
||
|
|
*/
|
||
|
|
function usingSSLConnection()
|
||
|
|
{
|
||
|
|
return ((isset($_SERVER['HTTPS']) &&
|
||
|
|
($_SERVER['HTTPS'] == 'on')) ||
|
||
|
|
getenv('SSL_PROTOCOL_VERSION'));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the server protocol in use on the current server.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return string The HTTP server protocol version.
|
||
|
|
*/
|
||
|
|
function getHTTPProtocol()
|
||
|
|
{
|
||
|
|
if (isset($_SERVER['SERVER_PROTOCOL'])) {
|
||
|
|
if (($pos = strrpos($_SERVER['SERVER_PROTOCOL'], '/'))) {
|
||
|
|
return substr($_SERVER['SERVER_PROTOCOL'], $pos + 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determine if files can be uploaded to the system.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return integer If uploads allowed, returns the maximum size of the
|
||
|
|
* upload in bytes. Returns 0 if uploads are not
|
||
|
|
* allowed.
|
||
|
|
*/
|
||
|
|
function allowFileUploads()
|
||
|
|
{
|
||
|
|
if (ini_get('file_uploads')) {
|
||
|
|
if (($dir = ini_get('upload_tmp_dir')) &&
|
||
|
|
!is_writable($dir)) {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
$size = ini_get('upload_max_filesize');
|
||
|
|
switch (strtolower(substr($size, -1, 1))) {
|
||
|
|
case 'k':
|
||
|
|
$size = intval(floatval($size) * 1024);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 'm':
|
||
|
|
$size = intval(floatval($size) * 1024 * 1024);
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
$size = intval($size);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return $size;
|
||
|
|
} else {
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines if the file was uploaded or not. If not, will return the
|
||
|
|
* appropriate error message.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $field The name of the field containing the
|
||
|
|
* uploaded file.
|
||
|
|
* @param optional string $name The file description string to use in the
|
||
|
|
* error message. Default: 'file'.
|
||
|
|
*
|
||
|
|
* @return mixed True on success, PEAR_Error on error.
|
||
|
|
*/
|
||
|
|
function wasFileUploaded($field, $name = null)
|
||
|
|
{
|
||
|
|
require_once 'PEAR.php';
|
||
|
|
|
||
|
|
if (is_null($name)) {
|
||
|
|
$name = _("file");
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!($uploadSize = Browser::allowFileUploads())) {
|
||
|
|
return PEAR::raiseError(_("File uploads not supported."));
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Get any index on the field name. */
|
||
|
|
require_once 'Horde/Array.php';
|
||
|
|
$index = Horde_Array::getArrayParts($field, $base, $keys);
|
||
|
|
|
||
|
|
if ($index) {
|
||
|
|
/* Index present, fetch the error var to check. */
|
||
|
|
$keys_path = array_merge(array($base, 'error'), $keys);
|
||
|
|
$error = Horde_Array::getElement($_FILES, $keys_path);
|
||
|
|
|
||
|
|
/* Index present, fetch the tmp_name var to check. */
|
||
|
|
$keys_path = array_merge(array($base, 'tmp_name'), $keys);
|
||
|
|
$tmp_name = Horde_Array::getElement($_FILES, $keys_path);
|
||
|
|
} else {
|
||
|
|
/* No index, simple set up of vars to check. */
|
||
|
|
if (!isset($_FILES[$field])) {
|
||
|
|
return PEAR::raiseError(_("No file uploaded"), UPLOAD_ERR_NO_FILE);
|
||
|
|
}
|
||
|
|
$error = $_FILES[$field]['error'];
|
||
|
|
$tmp_name = $_FILES[$field]['tmp_name'];
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!isset($_FILES) || ($error == UPLOAD_ERR_NO_FILE)) {
|
||
|
|
return PEAR::raiseError(sprintf(_("There was a problem with the file upload: No %s was uploaded."), $name), UPLOAD_ERR_NO_FILE);
|
||
|
|
} elseif (($error == UPLOAD_ERR_OK) && is_uploaded_file($tmp_name)) {
|
||
|
|
return true;
|
||
|
|
} elseif (($error == UPLOAD_ERR_INI_SIZE) ||
|
||
|
|
($error == UPLOAD_ERR_FORM_SIZE)) {
|
||
|
|
return PEAR::raiseError(sprintf(_("There was a problem with the file upload: The %s was larger than the maximum allowed size (%d bytes)."), $name, $uploadSize), $error);
|
||
|
|
} elseif ($error == UPLOAD_ERR_PARTIAL) {
|
||
|
|
return PEAR::raiseError(sprintf(_("There was a problem with the file upload: The %s was only partially uploaded."), $name), $error);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Returns the headers for a browser download.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param optional string $filename The filename of the download.
|
||
|
|
* @param optional string $cType The content-type description of the
|
||
|
|
* file.
|
||
|
|
* @param optional boolean $inline True if inline, false if attachment.
|
||
|
|
* @param optional string $cLength The content-length of this file.
|
||
|
|
*
|
||
|
|
* @since Horde 2.2
|
||
|
|
*/
|
||
|
|
function downloadHeaders($filename = 'unknown', $cType = null,
|
||
|
|
$inline = false, $cLength = null)
|
||
|
|
{
|
||
|
|
/* Some browsers don't like spaces in the filename. */
|
||
|
|
if ($this->hasQuirk('no_filename_spaces')) {
|
||
|
|
$filename = strtr($filename, ' ', '_');
|
||
|
|
}
|
||
|
|
|
||
|
|
/* MSIE doesn't like multiple periods in the file name. Convert
|
||
|
|
all periods (except the last one) to underscores. */
|
||
|
|
if ($this->isBrowser('msie')) {
|
||
|
|
if (($pos = strrpos($filename, '.'))) {
|
||
|
|
$filename = strtr(substr($filename, 0, $pos), '.', '_') . substr($filename, $pos);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Content-Type/Content-Disposition Header. */
|
||
|
|
if ($inline) {
|
||
|
|
if (!is_null($cType)) {
|
||
|
|
header('Content-Type: ' . trim($cType));
|
||
|
|
} elseif ($this->isBrowser('msie')) {
|
||
|
|
header('Content-Type: application/x-msdownload');
|
||
|
|
} else {
|
||
|
|
header('Content-Type: application/octet-stream');
|
||
|
|
}
|
||
|
|
header('Content-Disposition: inline; filename="' . $filename . '"');
|
||
|
|
} else {
|
||
|
|
if ($this->isBrowser('msie')) {
|
||
|
|
header('Content-Type: application/x-msdownload');
|
||
|
|
} elseif (!is_null($cType)) {
|
||
|
|
header('Content-Type: ' . trim($cType));
|
||
|
|
} else {
|
||
|
|
header('Content-Type: application/octet-stream');
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($this->hasQuirk('break_disposition_header')) {
|
||
|
|
header('Content-Disposition: filename="' . $filename . '"');
|
||
|
|
} else {
|
||
|
|
header('Content-Disposition: attachment; filename="' . $filename . '"');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Content-Length Header. Don't send Content-Length for
|
||
|
|
* HTTP/1.1 servers. */
|
||
|
|
if (($this->getHTTPProtocol() != '1.1') && !is_null($cLength)) {
|
||
|
|
header('Content-Length: ' . $cLength);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Overwrite Pragma: and other caching headers for IE. */
|
||
|
|
if ($this->hasQuirk('cache_ssl_downloads')) {
|
||
|
|
header('Expires: 0');
|
||
|
|
header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
|
||
|
|
header('Pragma: public');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Determines if a browser can display a given MIME type.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $mimetype The MIME type to check.
|
||
|
|
*
|
||
|
|
* @return boolean True if the browser can display the MIME type.
|
||
|
|
*/
|
||
|
|
function isViewable($mimetype)
|
||
|
|
{
|
||
|
|
$mimetype = String::lower($mimetype);
|
||
|
|
list($type, $subtype) = explode('/', $mimetype);
|
||
|
|
|
||
|
|
if (!empty($this->_accept)) {
|
||
|
|
$wildcard_match = false;
|
||
|
|
|
||
|
|
if (strpos($this->_accept, $mimetype) !== false) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (strpos($this->_accept, '*/*') !== false) {
|
||
|
|
$wildcard_match = true;
|
||
|
|
if ($type != 'image') {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/* image/jpeg and image/pjpeg *appear* to be the same
|
||
|
|
* entity, but Mozilla doesn't seem to want to accept the
|
||
|
|
* latter. For our purposes, we will treat them the
|
||
|
|
* same. */
|
||
|
|
if ($this->isBrowser('mozilla') &&
|
||
|
|
($mimetype == 'image/pjpeg') &&
|
||
|
|
(strpos($this->_accept, 'image/jpeg') !== false)) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$wildcard_match) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!$this->hasFeature('images') || ($type != 'image')) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (in_array($subtype, $this->_images));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escape characters in javascript code if the browser requires it.
|
||
|
|
* %23, %26, and %2B (for IE) and %27 need to be escaped or else
|
||
|
|
* jscript will interpret it as a single quote, pound sign, or
|
||
|
|
* ampersand and refuse to work.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $code The JS code to escape.
|
||
|
|
*
|
||
|
|
* @return string The escaped code.
|
||
|
|
*/
|
||
|
|
function escapeJSCode($code)
|
||
|
|
{
|
||
|
|
$from = $to = array();
|
||
|
|
|
||
|
|
if ($this->isBrowser('msie') ||
|
||
|
|
($this->isBrowser('mozilla') && ($this->getMajor() >= 5))) {
|
||
|
|
$from = array('%23', '%26', '%2B');
|
||
|
|
$to = array(urlencode('%23'), urlencode('%26'), urlencode('%2B'));
|
||
|
|
}
|
||
|
|
$from[] = '%27';
|
||
|
|
$to[] = '\%27';
|
||
|
|
|
||
|
|
return str_replace($from, $to, $code);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the IE version in the session.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @param string $ver The IE Version string.
|
||
|
|
*/
|
||
|
|
function setIEVersion($ver)
|
||
|
|
{
|
||
|
|
$_SESSION['__browser'] = array(
|
||
|
|
'ie_version' => $ver
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the IE version stored in the session, if available.
|
||
|
|
*
|
||
|
|
* @access public
|
||
|
|
*
|
||
|
|
* @return mixed The IE Version string or null if no string is stored.
|
||
|
|
*/
|
||
|
|
function getIEVersion()
|
||
|
|
{
|
||
|
|
return isset($_SESSION['__browser']['ie_version']) ? $_SESSION['__browser']['ie_version'] : null;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|