mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
140 lines
3.5 KiB
PHP
140 lines
3.5 KiB
PHP
<?php
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namespace SilverStripe\Filesystem\Flysystem;
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use League\Flysystem\Adapter\Local;
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/**
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* Adapter for local filesystem based on assets directory
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*
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* @package framework
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* @subpackage filesystem
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*/
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class AssetAdapter extends Local {
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/**
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* Server specific configuration necessary to block http traffic to a local folder
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*
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* @config
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* @var array Mapping of server configurations to configuration files necessary
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*/
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private static $server_configuration = array();
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/**
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* Config compatible permissions configuration
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*
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* @config
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* @var array
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*/
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private static $file_permissions = array(
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'file' => [
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'public' => 0744,
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'private' => 0700,
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],
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'dir' => [
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'public' => 0755,
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'private' => 0700,
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]
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);
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public function __construct($root = null, $writeFlags = LOCK_EX, $linkHandling = self::DISALLOW_LINKS) {
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// Get root path
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$root = $this->findRoot($root);
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// Override permissions with config
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$permissions = \Config::inst()->get(get_class($this), 'file_permissions');
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parent::__construct($root, $writeFlags, $linkHandling, $permissions);
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// Configure server
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$this->configureServer();
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}
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/**
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* Determine the root folder absolute system path
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*
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* @param string $root
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* @return string
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*/
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protected function findRoot($root) {
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// Empty root will set the path to assets
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if (!$root) {
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throw new \InvalidArgumentException("Missing argument for root path");
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}
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// Substitute leading ./ with BASE_PATH
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if(strpos($root, './') === 0) {
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return BASE_PATH . substr($root, 1);
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}
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// Substitute leading ./ with parent of BASE_PATH, in case storage is outside of the webroot.
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if(strpos($root, '../') === 0) {
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return dirname(BASE_PATH) . substr($root, 2);
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}
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return $root;
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}
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/**
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* Force flush and regeneration of server files
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*/
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public function flush() {
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$this->configureServer(true);
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}
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/**
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* Configure server files for this store
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*
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* @param bool $forceOverwrite Force regeneration even if files already exist
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*/
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protected function configureServer($forceOverwrite = false) {
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// Get server type
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$type = isset($_SERVER['SERVER_SOFTWARE']) ? $_SERVER['SERVER_SOFTWARE'] : '*';
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list($type) = explode('/', strtolower($type));
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// Determine configurations to write
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$rules = \Config::inst()->get(get_class($this), 'server_configuration', \Config::FIRST_SET);
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if(empty($rules[$type])) {
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return;
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}
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$configurations = $rules[$type];
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// Apply each configuration
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$config = new \League\Flysystem\Config();
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$config->set('visibility', 'private');
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foreach($configurations as $file => $template) {
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if ($forceOverwrite || !$this->has($file)) {
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// Evaluate file
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$content = $this->renderTemplate($template);
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$success = $this->write($file, $content, $config);
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if(!$success) {
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throw new \Exception("Error writing server configuration file \"{$file}\"");
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}
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}
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}
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}
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/**
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* Render server configuration file from a template file
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*
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* @param string $template
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* @return \HTMLText Rendered results
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*/
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protected function renderTemplate($template) {
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// Build allowed extensions
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$allowedExtensions = new \ArrayList();
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foreach(\File::config()->allowed_extensions as $extension) {
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if($extension) {
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$allowedExtensions->push(new \ArrayData(array(
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'Extension' => preg_quote($extension)
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)));
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}
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}
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$viewer = new \SSViewer(array($template));
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return (string)$viewer->process(new \ArrayData(array(
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'AllowedExtensions' => $allowedExtensions
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)));
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}
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}
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