Follow-up Comment #21, bug #20003 (project freeciv):
> Well, third one is what I've planned to do for a long time*:
> give dio_get_xxx() functions return values telling if they
> succeeded or failed. Patch attached.
>
> *) According to very old TODO I had actually foreseen
> possibility of infinite loop somewhere when I first came across
> the dio_get_xxx() functions and noticed their lack of return
> value.
>
> Any volunteers to do throughout checking of all dio_get_xxx()
> callers in case there's other places where return values (added
> by this patch) should be checked.
When working on porting this patch to warclient, numerous questions came to
me. I had also noticed something wrong in those functions, including the case
of infinite loops and wrong data for a very long time.
What value returns the dio_get_xxx() ? According to your comment, I understand
that these functions returns TRUE if the value is read and valid. However, the
code doesn't match this (for example can dio_get_uint8() returns TRUE even if
there was no more byte, functions like dio_get_bit_string() look strange).
I guess that all receive_packet_xxx() functions should also test the results
of the dio_get_xxx() ones.
Also, shouldn't the server of the client cut the connection of a such packet ?
It clearly doesn't match the protocol, so it is not a compatible connection.
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