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module_user_css.inc.php
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module_user_css.inc.php
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<?php
/**
* module_user_css.inc.php
* Module for setting user-defined per-site and global stylesheets
*
* Copyright Gottfried Haider, Danja Vasiliev 2010.
* This source code is licensed under the GNU General Public License.
* See the file COPYING for more details.
*/
@require_once('config.inc.php');
require_once('common.inc.php');
require_once('controller.inc.php');
require_once('html.inc.php');
require_once('modules.inc.php');
require_once('util.inc.php');
/**
* controller that shows a textarea for editing either a page's or the global
* user-defined css file
*/
function controller_user_css_stylesheet($args)
{
if ($args[0][1] == 'stylesheet') {
// changing page stylesheet
$page = $args[0][0];
page_canonical($page);
if (!page_exists($page)) {
http_404();
}
} else {
// changing global stylesheet
$page = false;
}
default_html(true);
html_add_js_var('$.glue.page', $page);
html_add_css(base_url().'modules/user_css/user_css.css');
html_add_js(base_url().'modules/user_css/user_css.js');
$bdy = &body();
elem_attr($bdy, 'id', 'user_css');
if ($page === false) {
body_append('<h1>Global stylesheet</h1>'.nl());
// try to load css
$css = @file_get_contents(CONTENT_DIR.'/usercss');
if ($css === false) {
$css = '';
}
} else {
body_append('<h1>'.htmlspecialchars($page, ENT_NOQUOTES, 'UTF-8').' stylesheet</h1>'.nl());
load_modules('glue');
$obj = load_object(array('name'=>$page.'.usercss'));
if ($obj['#error']) {
$css = '';
} else {
$css = $obj['#data']['content'];
}
}
// encoding to html must come before the replacement below
$css = htmlspecialchars($css, ENT_NOQUOTES, 'UTF-8');
// replace newline characters by an entity to prevent render_object()
// from adding some indentation
$css = str_replace("\r\n", '&#10;', $css);
$css = str_replace("\n", '&#10;', $css);
// why not replace tabs as well why we are at it
$css = str_replace("\t", '&#09;', $css);
body_append('<textarea id="user_css_text" placeholder="enter css code here">'.$css.'</textarea>'.nl());
body_append('<br>'.nl());
body_append('<input id="user_css_save" type="button" value="save">'.nl());
echo html_finalize();
}
register_controller('stylesheet', '', 'controller_user_css_stylesheet', array('auth'=>true));
register_controller('*', 'stylesheet', 'controller_user_css_stylesheet', array('auth'=>true));
/**
* controller that serves either a page's or the global user-defined css file
*/
function controller_user_css_user_css($args)
{
header('Content-type: text/css; charset=UTF-8');
if (empty($args[0][1])) {
// serve global stylesheet
@readfile(CONTENT_DIR.'/usercss');
} else {
load_modules('glue');
$obj = load_object(array('name'=>$args[0][1].'.usercss'));
if (!$obj['#error'] && isset($obj['#data']['content'])) {
echo $obj['#data']['content'];
}
}
}
register_controller('user_css', '*', 'controller_user_css_user_css');
function user_css_render_object($args)
{
$obj = $args['obj'];
if (!isset($obj['type']) || $obj['type'] != 'usercss') {
return false;
}
if (!empty($obj['content'])) {
if (SHORT_URLS) {
html_add_css(base_url().'user_css/'.implode('.', array_slice(expl('.', $obj['name']), 0, 2)), 9);
} else {
html_add_css(base_url().'?user_css/'.implode('.', array_slice(expl('.', $obj['name']), 0, 2)), 9);
}
}
return '';
}
function user_css_render_page_early($args)
{
// include the global usercss if it exists
if (@is_file(CONTENT_DIR.'/usercss')) {
if (SHORT_URLS) {
html_add_css(base_url().'user_css', 8);
} else {
html_add_css(base_url().'?user_css', 8);
}
}
}
/**
* set the user-defined css file
*
* @param array $args arguments
* key 'page' is the page (i.e. page.rev) or false the global css
* key 'css' is the content of the css file
* @return array response
* true if successful
*/
function user_css_set_css($args)
{
if (!isset($args['page']) || ($args['page'] !== false && !page_exists($args['page']))) {
return response('Required argument "page" missing or invalid', 400);
}
if (!isset($args['css'])) {
return response('Required argument "css" missing', 400);
}
if ($args['page'] === false) {
if (empty($args['css'])) {
// empty stylesheet
@unlink(CONTENT_DIR.'/usercss');
return response(true);
} else {
$m = umask(0111);
if (!@file_put_contents(CONTENT_DIR.'/usercss', $args['css'])) {
umask($m);
return response('Error saving stylesheet', 500);
} else {
umask($m);
return response(true);
}
}
} else {
load_modules('glue');
if (empty($args['css'])) {
delete_object(array('name'=>$args['page'].'.usercss'));
return response(true);
} else {
return update_object(array('name'=>$args['page'].'.usercss', 'type'=>'usercss', 'module'=>'user_css', 'content'=>$args['css']));
}
}
}
register_service('user_css.set_css', 'user_css_set_css', array('auth'=>true));
?>

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module_user_css.inc.php (4 KB)

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