diff options
Diffstat (limited to 'itjs.class')
| -rw-r--r-- | itjs.class | 32 |
1 files changed, 27 insertions, 5 deletions
@@ -160,7 +160,8 @@ static function filecontents($filenames, $execphp = true) list($filename, $paramstr) = explode("?", $filename); if ($paramstr && $execphp) parse_str($paramstr, $_GET); - $result .= it::replace(array('^1$' => ""), $execphp ? @include($filename) : @file_get_contents($filename), array('utf8' => false)); + if (file_exists($filename)) + $result .= it::replace(array('^1$' => ""), $execphp ? include($filename) : file_get_contents($filename), array('utf8' => false)); $_GET = $origget; } $result .= ob_get_clean(); @@ -206,14 +207,35 @@ static function checksum($fnlist, $p = array()) return it_cache::get($key) ?: it_cache::put($key, substr(md5(self::filecontents($filenames, false)), 0, 10), array('ttl' => 60)); } -function crcurl($url) +function crcurl($url, $p = array()) { if (it::match('^http', $url)) # remote url, must fetch to crc - $fn = it_url::get_cache(array('url' => $url, 'maxage' => 3600)); + list($fn, $short_expire) = array(it_url::get_cache(array('url' => $url, 'maxage' => 3600) + $p), false); else - $fn = ($m = it::match("^//(\w+)(/.*)", $url)) ? "/www/$m[0].search.ch" . $m[1] : $GLOBALS['ULTRAHOME'] . $url; + list($fn, $short_expire) = array(($m = it::match("^//(\w+)(/.*)", $url)) ? "/www/$m[0].search.ch" . $m[1] : $GLOBALS['ULTRAHOME'] . $url, true);; - return it::match('#', $url) ? U(trim($url, "#")) : U($url, array('c' => self::checksum(array($fn)))); + return it::match('#', $url) ? U(trim($url, "#")) : U($url, array('c' => self::checksum(array($fn), array('short_expire' => $short_expire)))); +} + +# $p['nocrc'] means no $_REQUEST['c'] is needed for far future expire +static function far_future_headers($p = array()) +{ + $crc = $_REQUEST['c'] ?: $_REQUEST['s']; + if ($crc != "-" && !$_SERVER['HTTP_CACHE_CONTROL'] && $_SERVER['HTTP_IF_NONE_MATCH'] && !it::is_devel() && !$_REQUEST['retry']) + { + header("HTTP/1.0 304 Not Modified"); # client should always keep the component that fits the page it has + exit; + } + + if ($crc != "-") + @header("Etag: alwaysvalid"); # we have checksums in the url. client should always keep the version he downloaded along with the html + + if (it::is_live() && !$_REQUEST['retry']) + { + $keeptime = $crc == "-" ? 0 : ($crc || $p['nocrc'] ? 30*86400 : 900); # long expire if checksum present + header("Cache-Control: max-age=$keeptime, private"); # proxies should not cache since contents of same url can differ between browsers + header("Expires: " . gmdate("D, d M Y H:i:s", time() + $keeptime). " GMT"); + } } } |