149 lines
3.9 KiB
PHP
149 lines
3.9 KiB
PHP
<?php
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class Cache_Local implements Cache_Adapter {
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private string $dir;
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public function remove(string $filename): bool {
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return unlink($this->get_full_path($filename));
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}
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public function get_mtime(string $filename) {
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return filemtime($this->get_full_path($filename));
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}
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public function set_dir(string $dir) : void {
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$this->dir = Config::get(Config::CACHE_DIR) . "/" . basename(clean($dir));
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$this->make_dir();
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}
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public function get_dir(): string {
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return $this->dir;
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}
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public function make_dir(): bool {
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if (!is_dir($this->dir)) {
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return mkdir($this->dir);
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}
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return false;
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}
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public function is_writable(?string $filename = null): bool {
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if ($filename) {
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if (file_exists($this->get_full_path($filename)))
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return is_writable($this->get_full_path($filename));
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else
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return is_writable($this->dir);
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} else {
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return is_writable($this->dir);
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}
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}
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public function exists(string $filename): bool {
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return file_exists($this->get_full_path($filename));
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}
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/**
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* @return int|false -1 if the file doesn't exist, false if an error occurred, size in bytes otherwise
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*/
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public function get_size(string $filename) {
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if ($this->exists($filename))
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return filesize($this->get_full_path($filename));
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else
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return -1;
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}
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public function get_full_path(string $filename): string {
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return $this->dir . "/" . basename(clean($filename));
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}
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public function get(string $filename): ?string {
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if ($this->exists($filename))
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return file_get_contents($this->get_full_path($filename));
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else
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return null;
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}
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/**
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* @param mixed $data
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*
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* @return int|false Bytes written or false if an error occurred.
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*/
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public function put(string $filename, $data) {
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return file_put_contents($this->get_full_path($filename), $data);
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}
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/**
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* @return false|null|string false if detection failed, null if the file doesn't exist, string mime content type otherwise
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*/
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public function get_mime_type(string $filename) {
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if ($this->exists($filename))
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return mime_content_type($this->get_full_path($filename));
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else
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return null;
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}
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/**
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* @return bool|int false if the file doesn't exist (or unreadable) or isn't audio/video, true if a plugin handled, otherwise int of bytes sent
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*/
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public function send(string $filename) {
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return $this->send_local_file($this->get_full_path($filename));
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}
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public function expire_all(): void {
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$dirs = array_filter(glob(Config::get(Config::CACHE_DIR) . "/*"), "is_dir");
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foreach ($dirs as $cache_dir) {
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$num_deleted = 0;
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if (is_writable($cache_dir) && !file_exists("$cache_dir/.no-auto-expiry")) {
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$files = glob("$cache_dir/*");
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if ($files) {
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foreach ($files as $file) {
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if (time() - filemtime($file) > 86400 * Config::get(Config::CACHE_MAX_DAYS)) {
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unlink($file);
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++$num_deleted;
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}
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}
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}
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Debug::log("Expired $cache_dir: removed $num_deleted files.");
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}
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}
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}
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/**
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* this is essentially a wrapper for readfile() which allows plugins to hook
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* output with httpd-specific "fast" implementation i.e. X-Sendfile or whatever else
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*
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* hook function should return true if request was handled (or at least attempted to)
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*
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* note that this can be called without user context so the plugin to handle this
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* should be loaded systemwide in config.php
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*
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* @return bool|int false if the file doesn't exist (or unreadable) or isn't audio/video, true if a plugin handled, otherwise int of bytes sent
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*/
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private function send_local_file(string $filename) {
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if (file_exists($filename)) {
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if (is_writable($filename) && !$this->exists('.no-auto-expiry')) {
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touch($filename);
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}
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$tmppluginhost = new PluginHost();
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$tmppluginhost->load(Config::get(Config::PLUGINS), PluginHost::KIND_SYSTEM);
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//$tmppluginhost->load_data();
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if ($tmppluginhost->run_hooks_until(PluginHost::HOOK_SEND_LOCAL_FILE, true, $filename))
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return true;
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return readfile($filename);
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} else {
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return false;
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}
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}
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}
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