[tarantool-patches] Re: [PATCH 1/4] swim: move sockaddr_in checkers to swim_proto.h

[Vladislav Shpilevoy <v.shpilevoy@tarantool.org>]

On 18/04/2019 18:16, Konstantin Osipov wrote:
> * Vladislav Shpilevoy <v.shpilevoy@tarantool.org> [19/04/18 17:11]:
>> Sorry, accidentally broke a test. The fix is
>> force pushed:
>>
>> ======================================================
>> swim_inaddr_is_empty(const struct sockaddr_in *addr)
>>  {
>> -	return addr->sin_port == 0 && addr->sin_addr.s_addr == 0;
>> +	return addr->sin_port == 0 || addr->sin_addr.s_addr == 0;
>>  }
> 
> This means you haven't paused to explain or test or add a
> pre-condition check to the setter function.
> Why either of the components can be empty, not both? Shouldn't 
> you check for such broken addresses when setting them, to not
> allow setting them at all?
> 
> The patch is OK to push obviously, just food for thought.

It's mainly against malicious and bad-formatter packets. Since
the protocol will be public, it can happen that custom drivers
will send bad packets.

> 
> -- 
> Konstantin Osipov, Moscow, Russia, +7 903 626 22 32
> http://tarantool.io - www.twitter.com/kostja_osipov
>