fix: layer code support http bug

Author: 高魏洪

__tests__/e2e/ci-mac-linux.sh

@@ -156,6 +156,10 @@ s deploy --trigger -t s2.yaml
 s deploy --async-invoke-config -t s2.yaml
 s info -t s2.yaml
 s remove -y -t s2.yaml
+
+echo "test layer code support http"
+s layer publish --layer-name test --code https://test-gwh.oss-cn-hangzhou.aliyuncs.com/test.zip --compatible-runtime custom.debian12
+s layer remove --layer-name test -y
 cd ..
 
 echo " *********  test scaling config *********"

publish.yaml

@@ -3,7 +3,7 @@ Type: Component
 Name: fc3
 Provider:
   - 阿里云
-Version: 0.1.17
+Version: 0.1.18
 Description: 阿里云函数计算全生命周期管理
 HomePage: https://github.com/devsapp/fc3
 Organization: 阿里云函数计算（FC）

src/utils/index.ts

@@ -338,10 +338,15 @@ export async function _downloadFromUrl(url: string): Promise<string> {
       extract: false,
     });
 
-    logger.debug(`Downloaded file to: ${downloadPath}`);
+    const downloadFilePath = downloadPath.endsWith('.zip') ? downloadPath : `${downloadPath}.zip`;
+    logger.debug(`Downloaded file to: ${downloadFilePath}`);
 
-    // 返回下载文件路径，由主流程决定是否需要压缩
-    return downloadPath;
+    const isDownloadedFileZip = await isZipFile(downloadFilePath);
+    if (!isDownloadedFileZip) {
+      throw new Error(`Downloaded file is not a valid zip file: ${downloadFilePath}`);
+    }
+
+    return downloadFilePath;
   } catch (error) {
     // 如果下载失败，清理临时目录
     try {
@@ -356,3 +361,32 @@ export async function _downloadFromUrl(url: string): Promise<string> {
     throw new Error(`Failed to download code from URL: ${error.message}`);
   }
 }
+
+/**
+ * 判断文件是否为ZIP文件 - 通过魔数检查
+ */
+async function isZipFile(filePath: string): Promise<boolean> {
+  try {
+    if (!fs.existsSync(filePath)) {
+      return false;
+    }
+
+    // 检查文件头部的魔数（而非扩展名）
+    const buffer = Buffer.alloc(4);
+    const fd = fs.openSync(filePath, 'r');
+    fs.readSync(fd, buffer, 0, 4, 0);
+    fs.closeSync(fd);
+
+    // ZIP文件的魔数是 50 4B 03 04 (十六进制)
+    const isZipMagicNumber =
+      buffer[0] === 0x50 &&
+      buffer[1] === 0x4b &&
+      (buffer[2] === 0x03 || buffer[2] === 0x05 || buffer[2] === 0x07) &&
+      (buffer[3] === 0x04 || buffer[3] === 0x06 || buffer[3] === 0x08);
+
+    return isZipMagicNumber;
+  } catch (error) {
+    logger.debug(`Error checking if file is zip: ${error.message}`);
+    return false;
+  }
+}