小程序调试

app/libs/wechat/weapp.rb

@@ -22,8 +22,16 @@ class Wechat::Weapp
     end
 
     def decrypt(session_key, encrypted_data, iv)
-      session_key = Base64.decode64(session_key).force_encoding("utf-8")
-      encrypted_data = Base64.decode64(encrypted_data).force_encoding("utf-8")
+      session_key = Base64.decode64(session_key)
+      encrypted_data = Base64.decode64(encrypted_data)
+      cd = CharDet.detect(content)
+      encrypted_data =
+        if cd["encoding"] == 'GB18030' && cd['confidence'] > 0.8
+          encrypted_data.encode('UTF-8', 'GBK', {:invalid => :replace, :undef => :replace, :replace => ' '})
+        else
+          encrypted_data.force_encoding('UTF-8')
+        end
+
       iv = Base64.decode64(iv)
 
       cipher = OpenSSL::Cipher::AES.new(128, :CBC)