Access to this directory is forbidden.
'); } } // 设置目录权限 chmod($this->upload_dir, 0755); } // 检查并清理过期文件 private function checkAndCleanup() { $lastCleanup = $this->settings->getSetting('last_cleanup', 0); // 使用中国时间 date_default_timezone_set('Asia/Shanghai'); $currentTime = time(); if ($currentTime - $lastCleanup > $this->cleanup_interval) { $this->settings->setSetting('last_cleanup', $currentTime); $stmt = $this->db->prepare(' SELECT code, type, filepath FROM files WHERE expires_at < :current_time OR (max_downloads > 0 AND current_downloads >= max_downloads) '); $stmt->bindValue(':current_time', $currentTime, SQLITE3_INTEGER); $result = $stmt->execute(); // 删除过期的文件和记录 while ($row = $result->fetchArray(SQLITE3_ASSOC)) { if ($row['type'] === 'file' && $row['filepath'] && file_exists($row['filepath'])) { unlink($row['filepath']); } $deleteStmt = $this->db->prepare('DELETE FROM files WHERE code = :code'); $deleteStmt->bindValue(':code', $row['code'], SQLITE3_TEXT); $deleteStmt->execute(); } // 清理空目录 $this->cleanEmptyDirectories($this->upload_dir); } } // 清理空目录 private function cleanEmptyDirectories($dir) { if (!is_dir($dir)) { return; } $files = scandir($dir); foreach ($files as $file) { if ($file === '.' || $file === '..' || $file === '.htaccess' || $file === 'index.html' || $file === '403.html') { continue; } $path = $dir . '/' . $file; if (is_dir($path)) { $this->cleanEmptyDirectories($path); // 如果目录为空（只包含 . 和 ..），则删除 $subFiles = scandir($path); if (count($subFiles) <= 2) { // 只有 . 和 .. rmdir($path); } } } } // 生成随机提取码 private function generateCode($length = 6) { $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ'; $code = ''; for ($i = 0; $i < $length; $i++) { $code .= $chars[random_int(0, strlen($chars) - 1)]; } return $code; } // 保存文件或文本 public function save($data) { $this->checkAndCleanup(); $code = $this->generateCode(); // 使用中国时间 date_default_timezone_set('Asia/Shanghai'); $created_at = time(); // 当前中国时间 $expires_at = $created_at + intval($data['expire_time']); // 过期时间也是中国时间 if (isset($_FILES['file'])) { // 处理文件上传 $file = $_FILES['file']; $filename = $file['name']; $filepath = $this->upload_dir . uniqid() . '_' . bin2hex(random_bytes(4)) . '_' . $filename; if (!move_uploaded_file($file['tmp_name'], $filepath)) { throw new Exception('文件上传失败'); } $type = 'file'; $content = null; } else { // 处理文本内容 $filename = null; $filepath = null; $type = 'text'; $content = $data['content']; } $stmt = $this->db->prepare(' INSERT INTO files (code, filename, filepath, content, type, created_at, expires_at, max_downloads) VALUES (:code, :filename, :filepath, :content, :type, :created_at, :expires_at, :max_downloads) '); $stmt->bindValue(':code', $code, SQLITE3_TEXT); $stmt->bindValue(':filename', $filename, SQLITE3_TEXT); $stmt->bindValue(':filepath', $filepath, SQLITE3_TEXT); $stmt->bindValue(':content', $content, SQLITE3_TEXT); $stmt->bindValue(':type', $type, SQLITE3_TEXT); $stmt->bindValue(':created_at', $created_at, SQLITE3_INTEGER); $stmt->bindValue(':expires_at', $expires_at, SQLITE3_INTEGER); $stmt->bindValue(':max_downloads', intval($data['max_downloads']), SQLITE3_INTEGER); if ($stmt->execute()) { return $code; } throw new Exception('保存失败'); } // 获取文件或文本 public function get($code) { $this->checkAndCleanup(); $stmt = $this->db->prepare('SELECT * FROM files WHERE code = :code'); $stmt->bindValue(':code', $code, SQLITE3_TEXT); $result = $stmt->execute(); if ($row = $result->fetchArray(SQLITE3_ASSOC)) { // 使用中国时间进行比较 date_default_timezone_set('Asia/Shanghai'); if (time() > $row['expires_at']) { $this->delete($code); return null; } // 检查下载次数 if ($row['max_downloads'] > 0 && $row['current_downloads'] >= $row['max_downloads']) { $this->delete($code); return null; } // 更新下载次数 $stmt = $this->db->prepare(' UPDATE files SET current_downloads = current_downloads + 1 WHERE code = :code '); $stmt->bindValue(':code', $code, SQLITE3_TEXT); $stmt->execute(); // 返回更多文件信息 return [ 'type' => $row['type'], 'content' => $row['content'], 'filename' => $row['filename'], 'filepath' => $row['filepath'], 'current_downloads' => $row['current_downloads'], 'max_downloads' => $row['max_downloads'], 'expires_at' => $row['expires_at'] ]; } return null; } // 删除文件或文本 private function delete($code) { $stmt = $this->db->prepare('SELECT * FROM files WHERE code = :code'); $stmt->bindValue(':code', $code, SQLITE3_TEXT); $result = $stmt->execute(); if ($row = $result->fetchArray(SQLITE3_ASSOC)) { if ($row['type'] === 'file' && $row['filepath'] && file_exists($row['filepath'])) { unlink($row['filepath']); } } $stmt = $this->db->prepare('DELETE FROM files WHERE code = :code'); $stmt->bindValue(':code', $code, SQLITE3_TEXT); $stmt->execute(); } }