. /** * This file is responsible for serving the one huge CSS of each theme. * * @package core * @copyright 2009 Petr Skoda (skodak) {@link http://skodak.org} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ // disable moodle specific debug messages and any errors in output, // comment out when debugging or better look into error log! define('NO_DEBUG_DISPLAY', true); // we need just the values from config.php and minlib.php define('ABORT_AFTER_CONFIG', true); require('../config.php'); // this stops immediately at the beginning of lib/setup.php require_once($CFG->dirroot.'/lib/csslib.php'); if (!defined('THEME_DESIGNER_CACHE_LIFETIME')) { define('THEME_DESIGNER_CACHE_LIFETIME', 4); // this can be also set in config.php } if ($slashargument = min_get_slash_argument()) { $slashargument = ltrim($slashargument, '/'); if (substr_count($slashargument, '/') < 2) { css_send_css_not_found(); } if (strpos($slashargument, '_s/') === 0) { // Can't use SVG $slashargument = substr($slashargument, 3); $usesvg = false; } else { $usesvg = true; } $chunk = null; if (preg_match('#/(chunk(\d+)(/|$))#', $slashargument, $matches)) { $chunk = (int)$matches[2]; $slashargument = str_replace($matches[1], '', $slashargument); } list($themename, $rev, $type) = explode('/', $slashargument, 3); $themename = min_clean_param($themename, 'SAFEDIR'); $rev = min_clean_param($rev, 'INT'); $type = min_clean_param($type, 'SAFEDIR'); } else { $themename = min_optional_param('theme', 'standard', 'SAFEDIR'); $rev = min_optional_param('rev', 0, 'INT'); $type = min_optional_param('type', 'all', 'SAFEDIR'); $chunk = min_optional_param('chunk', null, 'INT'); $usesvg = (bool)min_optional_param('svg', '1', 'INT'); } if ($type === 'editor') { // The editor CSS is never chunked. $chunk = null; } else if ($type === 'all') { // We're fine. } else { css_send_css_not_found(); } if (file_exists("$CFG->dirroot/theme/$themename/config.php")) { // exists } else if (!empty($CFG->themedir) and file_exists("$CFG->themedir/$themename/config.php")) { // exists } else { header('HTTP/1.0 404 not found'); die('Theme was not found, sorry.'); } $candidatedir = "$CFG->localcachedir/theme/$rev/$themename/css"; $etag = "$rev/$themename/$type"; $candidatename = $type; if (!$usesvg) { // Add to the sheet name, one day we'll be able to just drop this. $candidatedir .= '/nosvg'; $etag .= '/nosvg'; } if ($chunk !== null) { $etag .= '/chunk'.$chunk; $candidatename .= '.'.$chunk; } $candidatesheet = "$candidatedir/$candidatename.css"; $etag = sha1($etag); if (file_exists($candidatesheet)) { if (!empty($_SERVER['HTTP_IF_NONE_MATCH']) || !empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) { // we do not actually need to verify the etag value because our files // never change in cache because we increment the rev parameter css_send_unmodified(filemtime($candidatesheet), $etag); } css_send_cached_css($candidatesheet, $etag); } //================================================================================= // ok, now we need to start normal moodle script, we need to load all libs and $DB define('ABORT_AFTER_CONFIG_CANCEL', true); define('NO_MOODLE_COOKIES', true); // Session not used here define('NO_UPGRADE_CHECK', true); // Ignore upgrade check require("$CFG->dirroot/lib/setup.php"); $theme = theme_config::load($themename); $theme->force_svg_use($usesvg); $themerev = theme_get_revision(); $cache = true; if ($themerev <= 0 or $themerev != $rev) { $rev = $themerev; $cache = false; $candidatedir = "$CFG->cachedir/theme/$rev/$themename/css"; $etag = "$rev/$themename/$type"; $candidatename = $type; if (!$usesvg) { // Add to the sheet name, one day we'll be able to just drop this. $candidatedir .= '/nosvg'; $etag .= '/nosvg'; } if ($chunk !== null) { $etag .= '/chunk'.$chunk; $candidatename .= '.'.$chunk; } $candidatesheet = "$candidatedir/$candidatename.css"; $etag = sha1($etag); } make_localcache_directory('theme', false); if ($type === 'editor') { $cssfiles = $theme->editor_css_files(); css_store_css($theme, "$candidatedir/editor.css", $cssfiles, false); } else { // Older IEs require smaller chunks. $css = $theme->css_files(); $relroot = preg_replace('|^http.?://[^/]+|', '', $CFG->wwwroot); if (!empty($slashargument)) { if ($usesvg) { $chunkurl = "{$relroot}/theme/styles.php/{$themename}/{$rev}/all"; } else { $chunkurl = "{$relroot}/theme/styles.php/_s/{$themename}/{$rev}/all"; } } else { if ($usesvg) { $chunkurl = "{$relroot}/theme/styles.php?theme={$themename}&rev={$rev}&type=all"; } else { $chunkurl = "{$relroot}/theme/styles.php?theme={$themename}&rev={$rev}&type=all&svg=0"; } } $cssfiles = array(); foreach ($css as $key => $value) { foreach ($value as $val) { if (is_array($val)) { foreach ($val as $k=>$v) { $cssfiles[] = $v; } } else { $cssfiles[] = $val; } } } css_store_css($theme, "$candidatedir/all.css", $cssfiles, true, $chunkurl); } // verify nothing failed in cache file creation clearstatcache(); if (!file_exists($candidatesheet)) { // We need to send at least something, IE does not get it chunked properly but who cares. $css = ''; foreach ($cssfiles as $file) { $css .= file_get_contents($file)."\n"; } css_send_uncached_css($css, false); } else if (!$cache) { // Do not pollute browser caches if invalid revision requested. css_send_uncached_css(file_get_contents($candidatesheet), false); } else { // This is the expected result! css_send_cached_css($candidatesheet, $etag); }