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placing rdata encoding code in encode_rdata_in_dns_msg()

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This commit is contained in:
hyung-hwan 2019-04-13 07:23:11 +00:00
parent 2bff2e76fe
commit bac56f3d1d
1 changed files with 60 additions and 47 deletions
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107
mio/lib/dns.c
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@ -157,6 +157,62 @@ MIO_DEBUG1 (mio, "releasing dns msg %d\n", (int)mio_ntoh16(dns_msg_to_pkt(msg)->
mio_freemem (mio, msg);
}
static mio_oow_t encode_rdata_in_dns_msg (mio_dnsc_t* dnsc, const mio_dns_brr_t* rr, mio_dns_rrtr_t* rrtr)
{
switch (rr->qtype)
{
case MIO_DNS_QTYPE_A:
break;
case MIO_DNS_QTYPE_AAAA:
break;
/*
case MIO_DNS_QTYPE_WKS:
break; */
case MIO_DNS_QTYPE_MX:
/* preference, exchange */
break;
case MIO_DNS_QTYPE_CNAME:
/*case MIO_DNS_QTYPE_MB:
case MIO_DNS_QTYPE_MD:
case MIO_DNS_QTYPE_MF:
case MIO_DNS_QTYPE_MG:
case MIO_DNS_QTYPE_MR:*/
case MIO_DNS_QTYPE_NS:
case MIO_DNS_QTYPE_PTR:
/* just a normal domain name */
break;
#if 0
case MIO_DNS_QTYPE_HINFO:
/* cpu, os */
break;
#endif
#if 0
case MIO_DNS_QTYPE_MINFO:
/* rmailbx, emailbx */
#endif
break;
case MIO_DNS_QTYPE_SOA:
/* soa */
break;
case MIO_DNS_QTYPE_TXT:
case MIO_DNS_QTYPE_NULL:
default:
/* TODO: custom transformator? */
rrtr->dlen = mio_hton16(rr->dlen);
if (rr->dlen > 0) MIO_MEMCPY (rrtr + 1, rr->dptr, rr->dlen);
}
return rr->dlen;
}
static mio_dns_msg_t* build_dns_msg (mio_dnsc_t* dnsc, mio_dns_bdns_t* bdns, mio_dns_bqr_t* qr, mio_oow_t qr_count, mio_dns_brr_t* rr, mio_oow_t rr_count, mio_dns_bedns_t* edns)
{
mio_t* mio = dnsc->mio;
@ -252,6 +308,8 @@ static mio_dns_msg_t* build_dns_msg (mio_dnsc_t* dnsc, mio_dns_bdns_t* bdns, mio
{
if (rr[i].part == rr_sect)
{
mio_oow_t rdata_len;
dnlen = to_dn((mio_dns_t*)dnsc, rr[i].qname, dn, mio_count_bcstr(rr[i].qname) + 2);
if (dnlen <= 0)
{
@ -265,53 +323,8 @@ static mio_dns_msg_t* build_dns_msg (mio_dnsc_t* dnsc, mio_dns_bdns_t* bdns, mio
rrtr->qclass = mio_hton16(rr[i].qclass);
rrtr->ttl = mio_hton32(rr[i].ttl);
switch (rr[i].qtype)
{
case MIO_DNS_QTYPE_A:
break;
case MIO_DNS_QTYPE_AAAA:
break;
case MIO_DNS_QTYPE_WKS:
break;
case MIO_DNS_QTYPE_MX:
/* preference, exchange */
break;
case MIO_DNS_QTYPE_CNAME:
/*case MIO_DNS_QTYPE_MB:
case MIO_DNS_QTYPE_MD:
case MIO_DNS_QTYPE_MF:
case MIO_DNS_QTYPE_MG:
case MIO_DNS_QTYPE_MR:*/
case MIO_DNS_QTYPE_NS:
case MIO_DNS_QTYPE_PTR:
/* just a normal domain name */
break;
case MIO_DNS_QTYPE_HINFO:
/* cpu, os */
break;
case MIO_DNS_QTYPE_MINFO:
/* rmailbx, emailbx */
break;
case MIO_DNS_QTYPE_SOA:
/* soa */
break;
case MIO_DNS_QTYPE_TXT:
case MIO_DNS_QTYPE_NULL:
default:
/* TODO: custom transformator? */
rrtr->dlen = mio_hton16(rr[i].dlen);
if (rr[i].dlen > 0) MIO_MEMCPY (rrtr + 1, rr[i].dptr, rr[i].dlen);
}
dn = (mio_uint8_t*)(rrtr + 1) + rr[i].dlen;
rdata_len = encode_rdata_in_dns_msg(dnsc, &rr[i], rrtr);
dn = (mio_uint8_t*)(rrtr + 1) + rdata_len;
match_count++;
}