stupid lwres question

[Mark_Andrews at isc.org]

> >>>>> "Mark" == Mark Andrews <Mark.Andrews at isc.org> writes:
>     Mark> 	I ment to say dns_rdata_fromregion() and dns_rdata_tostruct().
> 
>     Mark> 	Also dns_rdata_totext().
>  
> Four questions
>   1) will there be man pages for these eventually?

	Some day.

>   2) is this an interface you want people to use?

	Yes.

>   3) I think that the only docs are in the headers, are there others?

	No (apart from the source itself).

>   4) I think that I should do something like the following:
> 
> isc_region_t region;
> dns_rdata_t  rd;
> dns_rdata_sig_t sig;
> 
> {res is result from lwres_getrrsetbyname()}
> 
> region.base   = &res->rri_sigs[i];
> region.length = res->rri_length;

	region.base = res->rri_sigs[i].rdi_data;
	region.length = res->rri_sigs[i].rdi_length;
 
> dns_rdata_fromregion(&rd, ns_c_in, ns_t_sig, &region);

	dns_rdata_fromregion(&rd, dns_rdataclass_in, 
			     dns_rdatatype_sig, &region);

> 
> dns_rdata_tostruct(&rd, &sig, NULL);
> - -> I now have the signature decoded into a structure.
> 
> isc_buffer_t *mybuf;
> isc_mem_t    *mymem;

	mymem = NULL;
	mybuf = NULL;
 
> isc_mem_create(0, 0, &mymem);
> 
> isc_buffer_allocate(mymem, &mybuf, 1024); /* but is there a better number? */
> 
> dns_rdata_totext(&rd, NULL, mybuf);

	printf("%*.s\n", isc_buffer_usedlength(mybuf),
	       isc_buffer_base(mybuf));

	dns_rdata_totext() will return ISC_R_NOSPACE if the buffer is
	to small.

	Mark
--
Mark Andrews, Internet Software Consortium
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: Mark.Andrews at isc.org