mirror of
https://github.com/UnickSoft/graphonline.git
synced 2025-07-01 15:26:12 +00:00
64 lines
2.3 KiB
PHP
Executable File
64 lines
2.3 KiB
PHP
Executable File
<?php if (!defined('PmWiki')) exit();
|
|
/* Copyright 2006-2014 Patrick R. Michaud (pmichaud@pobox.com)
|
|
This file is part of PmWiki; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published
|
|
by the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version. See pmwiki.php for full details.
|
|
|
|
*/
|
|
|
|
## Browser cache-control. If this is a cacheable action (e.g., browse,
|
|
## diff), then set the Last-Modified header to the time the site was
|
|
## last modified. If the browser has provided us with a matching
|
|
## If-Modified-Since request header, we can return 304 Not Modified.
|
|
SDV($LastModFile,"$WorkDir/.lastmod");
|
|
if (!$LastModFile) return;
|
|
|
|
$LastModTime = @filemtime($LastModFile);
|
|
foreach(get_included_files() as $f)
|
|
{ $v = @filemtime($f); if ($v > $LastModTime) $LastModTime = $v; }
|
|
|
|
if (@$EnableIMSCaching) {
|
|
SDV($IMSCookie, $CookiePrefix.'imstime');
|
|
SDV($IMSCookieExpires, $Now + 60*60*24*30);
|
|
SDV($IMSInvalidators, array('authpw', 'author'));
|
|
$LogoutCookies[] = $IMSCookie;
|
|
|
|
if ($IMSCookie) {
|
|
$IMSTime = @$_COOKIE[$IMSCookie];
|
|
if ($IMSTime < $LastModTime
|
|
|| array_intersect($IMSInvalidators, array_keys($_POST))) {
|
|
$IMSTime = $Now;
|
|
setcookie($IMSCookie, $IMSTime, $IMSCookieExpires, '/');
|
|
}
|
|
} else $IMSTime = $LastModTime;
|
|
|
|
if (in_array($action, (array)$CacheActions)) {
|
|
$HTTPLastMod = gmdate('D, d M Y H:i:s \G\M\T',$IMSTime);
|
|
$HTTPHeaders[] = "Cache-Control: no-cache";
|
|
$HTTPHeaders[] = "Last-Modified: $HTTPLastMod";
|
|
if (@$_SERVER['HTTP_IF_MODIFIED_SINCE']==$HTTPLastMod) {
|
|
header("HTTP/1.0 304 Not Modified");
|
|
header("Cache-Control: no-cache");
|
|
header("Expires: ");
|
|
header("Last-Modified: $HTTPLastMod");
|
|
exit();
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($NoHTMLCache
|
|
|| !@$PageCacheDir
|
|
|| count($_POST) > 0
|
|
|| count($_GET) > 1
|
|
|| (count($_GET) == 1 && !@$_GET['n'])) { $NoHTMLCache |= 1; return; }
|
|
|
|
mkdirp($PageCacheDir);
|
|
if (!file_exists("$PageCacheDir/.htaccess")
|
|
&& $fp = @fopen("$PageCacheDir/.htaccess", "w"))
|
|
{ fwrite($fp, "Order Deny,Allow\nDeny from all\n"); fclose($fp); }
|
|
$PageCacheFile = "$PageCacheDir/$pagename,cache";
|
|
if (file_exists($PageCacheFile) && @filemtime($PageCacheFile) < $LastModTime)
|
|
@unlink($PageCacheFile);
|
|
|