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@@ -3,96 +3,55 @@
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namespace app\common\middleware;
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use think\facade\Cache;
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-use think\facade\Log;
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-use think\Request;
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use think\Response;
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class SignatureMiddleware
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{
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- public function handle(Request $request, \Closure $next)
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+ public function handle($request, \Closure $next)
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{
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- // 获取必要参数
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- $essential = $request->only(['timestamp', 'nonce', 'signature']);
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-
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- // 验证必要参数
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- if (count(array_filter($essential)) !== 3) {
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- return $this->errorResponse('参数不完整', 400);
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- }
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-
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- // 验证时间戳(5分钟内有效)
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- if (abs(time() - (int)$essential['timestamp']) > 300) {
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- return $this->errorResponse('请求已过期', 400);
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- }
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-
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- // 验证nonce唯一性
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- $nonceKey = 'nonce:' . $essential['nonce'];
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- if (Cache::has($nonceKey)) {
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- return $this->errorResponse('重复请求', 400);
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- }
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-
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- // 构造签名数据(与前端完全一致)
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- $signData = $request->param();
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- unset($signData['signature']);
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-
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- // 按键名排序
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- ksort($signData);
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-
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- // 生成签名字符串(与前端相同格式)
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- $signContent = '';
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- foreach ($signData as $key => $value) {
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- $signContent .= "{$key}={$value}&";
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+ // 1. 获取加密签名
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+ $sign = $request->header('X-Sign');
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+ if (!$sign) {
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+ return $this->reject('Missing signature', 401);
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}
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- $signContent = rtrim($signContent, '&');
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-
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- // 记录原始签名内容(用于调试)
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- Log::debug("Sign Content: " . $signContent);
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-
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- // 获取公钥
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- $publicKey = openssl_pkey_get_public(
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- file_get_contents(env('RSA_PUBLIC_KEY_PATH'))
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- );
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- if (!$publicKey) {
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- Log::error("公钥加载失败");
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- return $this->errorResponse('系统错误', 500);
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+ // 2. 读取私钥
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+ $privateKey = file_get_contents(env('RSA_PRIVATE_KEY_PATH'));
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+ if (!$privateKey) {
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+ return $this->reject('Server key error', 500);
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}
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- // 计算签名的MD5值(与前端一致)
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- $md5Hash = md5($signContent);
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- Log::debug("MD5 Hash: " . $md5Hash);
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-
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- // 解码前端签名(前端使用公钥加密)
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- $signature = base64_decode($essential['signature']);
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-
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- // 使用公钥解密签名
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+ // 3. 解密数据
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$decrypted = '';
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- $success = openssl_public_decrypt($signature, $decrypted, $publicKey);
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+ openssl_private_decrypt(base64_decode($sign), $decrypted, $privateKey);
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- if (!$success) {
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- Log::error("签名解密失败: " . openssl_error_string());
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- return $this->errorResponse('签名验证失败', 403);
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+ if (!$decrypted || !strpos($decrypted, ':')) {
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+ return $this->reject('Invalid signature', 403);
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}
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- Log::debug("解密结果: " . $decrypted);
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+ // 4. 分离随机数和时间戳
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+ list($nonce, $timestamp) = explode(':', $decrypted, 2);
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- // 比较解密后的值与MD5哈希
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- if ($decrypted !== $md5Hash) {
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- Log::error("签名验证失败: 期望 {$md5Hash}, 实际 {$decrypted}");
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- return $this->errorResponse('签名验证失败', 403);
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+ // 5. 验证时间有效性(5分钟内)
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+ if (abs(time() - $timestamp / 1000) > 300) {
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+ return $this->reject('Request expired', 403);
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}
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- // 记录已使用的nonce(5分钟过期)
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- Cache::set($nonceKey, 1, 300);
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+ // 6. 防重放攻击(检查nonce唯一性)
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+ $cacheKey = 'nonce_' . $nonce;
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+ if (Cache::has($cacheKey)) {
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+ return $this->reject('Repeated request', 403);
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+ }
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+ Cache::set($cacheKey, 1, 300); // 5分钟缓存
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return $next($request);
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}
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- private function errorResponse(string $message, int $code): Response
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+ private function reject($msg, $code): Response
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{
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- return json([
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+ return Response::create([
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'code' => $code,
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- 'msg' => $message,
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- 'data' => null
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- ])->code($code);
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+ 'msg' => $msg
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+ ], 'json')->code($code);
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}
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}
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