mirror of
https://codeberg.org/streams/streams.git
synced 2024-09-22 07:35:20 +00:00
83 lines
2.4 KiB
PHP
83 lines
2.4 KiB
PHP
<?php
|
|
|
|
namespace Zotlabs\Lib;
|
|
|
|
use Zotlabs\Lib\Hashpath;
|
|
use Zotlabs\Daemon\Run;
|
|
|
|
class Img_cache
|
|
{
|
|
|
|
public static $cache_life = 18600 * 7;
|
|
|
|
public static function get_filename($url, $prefix = '.')
|
|
{
|
|
return Hashpath::path($url, $prefix);
|
|
}
|
|
|
|
// Check to see if we have this url in our cache
|
|
// If we have it return true.
|
|
// If we do not, or the cache file is empty or expired, return false
|
|
// but attempt to fetch the entry in the background
|
|
|
|
public static function check($url, $prefix = '.')
|
|
{
|
|
|
|
if (strpos($url, z_root()) !== false) {
|
|
return false;
|
|
}
|
|
|
|
$path = self::get_filename($url, $prefix);
|
|
if (file_exists($path)) {
|
|
$t = filemtime($path);
|
|
if ($t && time() - $t >= self::$cache_life) {
|
|
Run::Summon(['Cache_image', $url, $path]);
|
|
return false;
|
|
} else {
|
|
return ((filesize($path)) ? true : false);
|
|
}
|
|
}
|
|
|
|
// Cache_image invokes url_to_cache() as a background task
|
|
|
|
Run::Summon(['Cache_image', $url, $path]);
|
|
return false;
|
|
}
|
|
|
|
public static function url_to_cache($url, $file)
|
|
{
|
|
|
|
$fp = fopen($file, 'wb');
|
|
|
|
if (!$fp) {
|
|
logger('failed to open storage file: ' . $file, LOGGER_NORMAL, LOG_ERR);
|
|
return false;
|
|
}
|
|
|
|
// don't check certs, and since we're running in the background,
|
|
// allow a two-minute timeout rather than the default one minute.
|
|
// This is a compromise. We want to cache all the slow sites we can,
|
|
// but don't want to rack up too many processes doing so.
|
|
|
|
$redirects = 0;
|
|
$x = z_fetch_url($url, true, $redirects, ['filep' => $fp, 'novalidate' => true, 'timeout' => 120]);
|
|
|
|
fclose($fp);
|
|
|
|
if ($x['success'] && file_exists($file)) {
|
|
$i = @getimagesize($file);
|
|
if ($i && $i[2]) { // looking for non-zero imagetype
|
|
Run::Summon(['CacheThumb', basename($file)]);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
// We could not cache the image for some reason. Leave an empty file here
|
|
// to provide a record of the attempt. We'll use this as a flag to avoid
|
|
// doing it again repeatedly.
|
|
|
|
file_put_contents($file, EMPTY_STR);
|
|
logger('cache failed from ' . $url);
|
|
return false;
|
|
}
|
|
}
|