[patch 07/20] SMS: implement SHA256-based message IDs [incomplete]

[Inaky Perez-Gonzalez]

On Tue, 2010-07-27 at 10:03 -0700, Denis Kenzior wrote: 
> Hi Inaky,
> 
> > -unsigned int __ofono_sms_txq_submit(struct ofono_sms *sms, GSList *list,
> > -					unsigned int flags,
> > +struct tx_queue_entry * __ofono_sms_txq_submit(struct ofono_sms *sms, GSList *list,
> > +					unsigned int flags, unsigned ref,
> >  					ofono_sms_txq_submit_cb_t cb,
> >  					void *data, ofono_destroy_func destroy);
> 
> I disagree with this, you're modifying an ofono internal API function to
> return a structure which is opaque and cannot be manipulated.  I'd
> rather see you returning a struct sms_uuid...

I need a handle to operate on. The D-Bus wrappers need something they
can use to dispose of the structure (call tx_queue_entry_destroy() on
the error path) and to pass to sms_msg_cancel(). The structure is not
manipulated (except for accessing the UUID and #PDUs, which should
probably be coded out to a helper).

This could be solved by having at the entry point of those functions or
wrappers of a lookup function that looks for the UUID in the list of
messages, but that would be adding more code and wasting time for no
benefit. I disagree on adding unnecessary steps.

> > +	/*
> > +	 * Instead of using the telephone number/address we got from
> > +	 * D-Bus, we do the reverse formatting, so we get something
> > +	 * that has been normalized--this is used later and we do it
> > +	 * here to simplify error handling.
> > +	 */
> > +	sms_address_from_string(&receiver, to);
> > +	if (sms_address_to_hex_string(&receiver, receiver_str)
> > +	    == FALSE)
> > +		return __ofono_error_failed(msg);
> 
> Please avoid mixing tabs and spaces for indentation.  And in this case
> it is more readale to break up the function than the equals line.  E.g.
> 
> if (sms_address_to_hex_string(&receiver,
> 				receiver_str == FALSE)
> 	return __ofono_error_failed(msg);

This is truly a matter of personal opinion; I for one cannot see how
this is more readable than the other form :)