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wp-content/plugins/mailpoet/lib/Doctrine/MetadataCache.php

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+<?php // phpcs:ignore SlevomatCodingStandard.TypeHints.DeclareStrictTypes.DeclareStrictTypesMissing
+
+namespace MailPoet\Doctrine;
+
+if (!defined('ABSPATH')) exit;
+
+
+use MailPoetVendor\Doctrine\Common\Cache\CacheProvider;
+use ReflectionClass;
+use ReflectionException;
+
+// Simple filesystem-based cache storage for Doctrine Metadata.
+//
+// Needed because Doctrine's FilesystemCache doesn't work read-only (when metadata dumped)
+// and it calls realpath() that could fail on some hostings due to filesystem permissions.
+class MetadataCache extends CacheProvider {
+  /** @var bool */
+  private $isDevMode;
+
+  /** @var string */
+  private $directory;
+
+  public function __construct(
+    $dir,
+    $isReadOnly
+  ) {
+    $this->isDevMode = defined('WP_DEBUG') && WP_DEBUG && !$isReadOnly;
+    $this->directory = rtrim($dir, '/\\');
+    if (!file_exists($this->directory)) {
+      mkdir($this->directory);
+    }
+  }
+
+  protected function doFetch($id) {
+    if (!$this->doContains($id)) {
+      return false;
+    }
+    return unserialize((string)file_get_contents($this->getFilename($id)));
+  }
+
+  protected function doContains($id) {
+    $filename = $this->getFilename($id);
+    $fileExists = file_exists($filename);
+
+    // in dev mode invalidate cache if source file has changed
+    if ($fileExists && $this->isDevMode) {
+      /** @var \stdClass $classMetadata */
+      $classMetadata = unserialize((string)file_get_contents($filename));
+      if (!isset($classMetadata->name) || (!class_exists($classMetadata->name) && !interface_exists($classMetadata->name))) {
+        return false;
+      }
+      try {
+        $reflection = new ReflectionClass($classMetadata->name);
+      } catch (ReflectionException $e) {
+        return false;
+      }
+      clearstatcache();
+      return filemtime((string)$filename) >= filemtime((string)$reflection->getFileName());
+    }
+
+    return $fileExists;
+  }
+
+  protected function doSave($id, $data, $lifeTime = 0) {
+    $filename = $this->getFilename($id);
+    $result = @file_put_contents($filename, serialize($data));
+    if ($result === false) {
+      throw new \RuntimeException("Error while writing to '$filename'");
+    }
+    return true;
+  }
+
+  protected function doDelete($id) {
+    @unlink($this->getFilename($id));
+    return true;
+  }
+
+  protected function doFlush() {
+    $directoryContent = glob($this->directory . DIRECTORY_SEPARATOR . '*');
+    if ($directoryContent === false) {
+      return false;
+    }
+    foreach ($directoryContent as $filename) {
+      if (is_file($filename)) {
+        @unlink($filename);
+      }
+    }
+    return true;
+  }
+
+  protected function doGetStats() {
+    return null;
+  }
+
+  private function getFilename($id) {
+    return $this->directory . DIRECTORY_SEPARATOR . md5($id);
+  }
+}