Fix connection procedure auth-switch password.

elemount · elemount · commit f371dd554deb · 2017-06-20T05:03:08.000Z
For AuthSwitch feature, mysql_native_password and mysql_old_password
should reply only 8-byte or 20-byte scrambled password without \0. So
fixed it.
diff --git a/pymysql/connections.py b/pymysql/connections.py
@@ -1183,10 +1183,10 @@ def _process_auth(self, plugin_name, auth_packet):
             handler = None
         if plugin_name == b"mysql_native_password":
             # https://dev.mysql.com/doc/internals/en/secure-password-authentication.html#packet-Authentication::Native41
-            data = _scramble(self.password.encode('latin1'), auth_packet.read_all()) + b'\0'
+            data = _scramble(self.password.encode('latin1'), auth_packet.read_all())
         elif plugin_name == b"mysql_old_password":
             # https://dev.mysql.com/doc/internals/en/old-password-authentication.html
-            data = _scramble_323(self.password.encode('latin1'), auth_packet.read_all()) + b'\0'
+            data = _scramble_323(self.password.encode('latin1'), auth_packet.read_all())
         elif plugin_name == b"mysql_clear_password":
             # https://dev.mysql.com/doc/internals/en/clear-text-authentication.html
             data = self.password.encode('latin1') + b'\0'
