add max filesize check

controller/ApiController.php

@@ -478,16 +478,28 @@ Class ApiController extends Controller {
     }
 
     //保存base64格式的文件
+    //@return
+    //-1 文件大小超出限制
+    //0 保存失败
+    //1 保存成功
     protected function saveBase64File($base64FileContent, $filePath) {
-        $saved = true;
+        $saved = 1;
 
         try {
             $base64 = preg_replace('/^data:[a-z0-9]+\/[a-z0-9]+;base64,/i', '', $base64FileContent);
             $base64 = str_replace(' ', '+', $base64);
             $fileContent = base64_decode($base64);
             file_put_contents($filePath, $fileContent);
+
+            //判断文件大小
+            $maxLength = FSC::$app['config']['admin']['maxUploadFileSize'] * 1024*1024;
+            $filesize = filesize($filePath);
+            if ($filesize > $maxLength) {
+                unlink($filePath);
+                $saved = -1;
+            }
         }catch(Exception $e) {
-            $saved = false;
+            $saved = 0;
         }
 
         return $saved;
@@ -571,9 +583,13 @@ Class ApiController extends Controller {
                 }
 
                 $filePath = $this->createNewFile($parentDir, $filename);
-                if ($this->saveBase64File($upfile, $filePath)) {
+                $saved = $this->saveBase64File($upfile, $filePath);
+                if ($saved == 1) {
                     $code = 1;
                     $msg = '上传完成';
+                }else if ($saved == -1) {
+                    $maxSize = FSC::$app['config']['admin']['maxUploadFileSize'];
+                    $err = "文件超出 {$maxSize}M 大小限制！";
                 }else {
                     $err = '上传失败，请检查数据目录权限配置！';
                 }