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Add photo cache hooks

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This commit is contained in:
Max Kostikov 2018-11-29 10:38:25 +01:00
parent 476bd7400d
commit bd0fc8a2d7
1 changed files with 57 additions and 33 deletions
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90
Zotlabs/Module/Photo.php
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@ -1,19 +1,19 @@
<?php
namespace Zotlabs\Module;
require_once('include/security.php');
require_once('include/attach.php');
require_once('include/photo/photo_driver.php');
class Photo extends \Zotlabs\Web\Controller {
function init() {
$prvcachecontrol = false;
$streaming = null;
$channel = null;
$person = 0;
$renew = false;
switch(argc()) {
case 4:
@ -29,7 +29,15 @@ class Photo extends \Zotlabs\Web\Controller {
killme();
// NOTREACHED
}
$cache_mode = array(
'on' => false, // Cache off
'age' => 86400, // max-age
'exp' => true, // Use own max-age
'leak' => false // Do not allow non members use our cache
);
call_hooks('cache_mode_hook', $cache_mode);
$observer_xchan = get_observer_hash();
$ismodified = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
@ -106,13 +114,14 @@ class Photo extends \Zotlabs\Web\Controller {
License link: http://creativecommons.org/licenses/by/3.0/
*/
// @FIXME It seems this part doesn't work because we are not setting such cookie
$cookie_value = false;
if (isset($_COOKIE['devicePixelRatio'])) {
$cookie_value = intval($_COOKIE['devicePixelRatio']);
}
else {
// Force revalidation of cache on next request
$cache_directive = 'no-cache';
// $prvcachecontrol = 'no-cache';
$status = 'no cookie';
}
@ -129,27 +138,44 @@ class Photo extends \Zotlabs\Web\Controller {
$resolution = 1;
}
$r = q("SELECT uid, photo_usage FROM photo WHERE resource_id = '%s' AND imgscale = %d LIMIT 1",
$r = q("SELECT uid, photo_usage, expires, display_path FROM photo WHERE resource_id = '%s' AND imgscale = %d LIMIT 1",
dbesc($photo),
intval($resolution)
);
if($r) {
$allowed = (-1);
if(intval($r[0]['photo_usage'])) {
$u = intval($r[0]['photo_usage']);
if($u) {
$allowed = 1;
if(intval($r[0]['photo_usage']) === PHOTO_COVER)
if($u === PHOTO_COVER)
if($resolution < PHOTO_RES_COVER_1200)
$allowed = (-1);
if(intval($r[0]['photo_usage']) === PHOTO_PROFILE)
if($u === PHOTO_PROFILE)
if(! in_array($resolution,[4,5,6]))
$allowed = (-1);
if($u === PHOTO_CACHE) {
$origurl = $r[0]['display_path'];
// Cached image leak protection
if(! (local_channel() || $cache_mode['leak'])) {
header("Location: " . $origurl);
killme();
}
// Revalidate cache
if($cache_mode['on'] && strtotime($r[0]['expires']) - 60 < time()) {
$cache = array(
'url' => $origurl,
'uid' => $r[0]['uid']
);
call_hooks('cache_url_hook', $cache);
if(! $cache['status'])
http_status_exit(404,'not found');
}
}
}
if($allowed === (-1)) {
if($allowed === (-1))
$allowed = attach_can_view($r[0]['uid'],$observer_xchan,$photo);
}
$channel = channelx_by_n($r[0]['uid']);
@ -160,16 +186,19 @@ class Photo extends \Zotlabs\Web\Controller {
);
$exists = (($e) ? true : false);
if($exists && $allowed) {
$expires = strtotime($e[0]['expires'] . 'Z');
$data = dbunescbin($e[0]['content']);
$filesize = $e[0]['filesize'];
$mimetype = $e[0]['mimetype'];
$modified = strtotime($e[0]['edited'] . 'Z');
if(intval($e[0]['os_storage']))
if(intval($e[0]['os_storage'])) {
$streaming = $data;
}
if($e[0]['allow_cid'] != '' || $e[0]['allow_gid'] != '' || $e[0]['deny_gid'] != '' || $e[0]['deny_gid'] != '')
$prvcachecontrol = true;
$prvcachecontrol = 'no-store, no-cache, must-revalidate';
}
else {
if(! $allowed) {
@ -180,9 +209,9 @@ class Photo extends \Zotlabs\Web\Controller {
}
}
} else {
}
else
http_status_exit(404,'not found');
}
}
header_remove('Pragma');
@ -225,24 +254,14 @@ class Photo extends \Zotlabs\Web\Controller {
$mimetype = $ph->getType();
}
}
// @FIXME Seems never invoked
// Writing in cachefile
if (isset($cachefile) && $cachefile != '') {
file_put_contents($cachefile, $data);
$modified = filemtime($cachefile);
}
header("Content-type: " . $mimetype);
if($prvcachecontrol) {
if(isset($prvcachecontrol)) {
// it is a private photo that they have no permission to view.
// tell the browser not to cache it, in case they authenticate
// and subsequently have permission to see it
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: " . $prvcachecontrol);
}
else {
@ -255,18 +274,23 @@ class Photo extends \Zotlabs\Web\Controller {
// This has performance considerations but we highly recommend you
// leave it alone.
$cache = get_config('system','photo_cache_time', 86400); // 1 day by default
$maxage = $cache_mode['age'];
header("Expires: " . gmdate("D, d M Y H:i:s", time() + $cache) . " GMT");
header("Cache-Control: max-age=" . $cache);
if($cache_mode['exp'] || (! isset($expires)) || (isset($expires) && $expires - 60 < time()))
$expires = time() + $maxage;
else
$maxage = $expires - time();
header("Expires: " . gmdate("D, d M Y H:i:s", $expires) . " GMT");
header("Cache-Control: max-age=" . $maxage);
}
header("Content-type: " . $mimetype);
header("Last-Modified: " . gmdate("D, d M Y H:i:s", $modified) . " GMT");
header("Content-Length: " . (isset($filesize) ? $filesize : strlen($data)));
// If it's a file resource, stream it.
if($streaming && $channel) {
if(strpos($streaming,'store') !== false)
$istream = fopen($streaming,'rb');