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New cache system (used in privacy_image_cache)

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This commit is contained in:
Michael Vogel 2012-11-17 00:52:35 +01:00
parent a06bd90965
commit 7598c4aa4f
1 changed files with 30 additions and 9 deletions
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39
privacy_image_cache/privacy_image_cache.php
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@ -32,7 +32,21 @@ function privacy_image_cache_module() {}
function privacy_image_cache_init() {
global $a;
global $a, $_SERVER;
if (isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
header('HTTP/1.1 304 Not Modified');
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: '.$_SERVER['HTTP_IF_NONE_MATCH']);
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
if(function_exists('header_remove')) {
header_remove('Last-Modified');
header_remove('Expires');
header_remove('Cache-Control');
}
exit;
}
if ($a->config["system"]["db_log"] != "")
$stamp1 = microtime(true);
@ -46,17 +60,18 @@ function privacy_image_cache_init() {
// Double encoded url - happens with Diaspora
$urlhash2 = 'pic:' . sha1(urldecode($_REQUEST['url']));
$cache = get_config('system','itemcache');
if (($cache != '') and is_dir($cache)) {
$cachefile = $cache."/".hash("md5", $_REQUEST['url']);
$cachefile = get_cachefile(hash("md5", $_REQUEST['url']));
if ($cachefile != '') {
if (file_exists($cachefile)) {
$img_str = file_get_contents($cachefile);
$mime = image_type_to_mime_type(exif_imagetype($cachefile));
header("Content-type: $mime");
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
header("Cache-Control: max-age=" . (3600*24));
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: "'.md5($img_str).'"');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
echo $img_str;
@ -137,12 +152,16 @@ function privacy_image_cache_init() {
}
// Writing in cachefile
if (isset($cachefile) && ($cachefile != '') and (file_exists($cachefile)) and (exif_imagetype($cachefile) > 0))
// and (file_exists($cachefile)) and (exif_imagetype($cachefile) > 0))
if ($cachefile != '')
file_put_contents($cachefile, $img_str);
header("Content-type: $mime");
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600*24)) . " GMT");
header("Cache-Control: max-age=" . (3600*24));
//header("Last-Modified: Sat, 01 Apr 1999 12:23:42 GMT");
header("Last-Modified: " . gmdate("D, d M Y H:i:s", time()) . " GMT");
header('Etag: "'.md5($img_str).'"');
header("Expires: " . gmdate("D, d M Y H:i:s", time() + (31536000)) . " GMT");
header("Cache-Control: max-age=31536000");
echo $img_str;
@ -210,6 +229,8 @@ function privacy_image_cache_display_item_hook(&$a, &$o) {
$o["output"]["thumb"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["thumb"])));
if (isset($o["output"]["author-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["author-avatar"]))
$o["output"]["author-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["author-avatar"])));
if (isset($o["output"]["owner-avatar"]) && !privacy_image_cache_is_local_image($o["output"]["owner-avatar"]))
$o["output"]["owner-avatar"] = $a->get_baseurl() . "/privacy_image_cache/?url=" . escape_tags(addslashes(rawurlencode($o["output"]["owner-avatar"])));
}
}