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added some code to implement dns packet parser

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hyung-hwan
2020-02-13 09:31:02 +00:00
parent 192e64b65c
commit 4e6a1b7d85
4 changed files with 420 additions and 207 deletions
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48
mio/bin/t01.c
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@ -606,19 +606,37 @@ static int setup_ping4_tester (mio_t* mio)
static void on_dnc_resolve(mio_svc_dnc_t* dnc, mio_dns_msg_t* reqmsg, mio_errnum_t status, const void* data, mio_oow_t dlen)
{
mio_dns_pkt_info_t* pi = MIO_NULL;
if (status == MIO_ENOERR)
{
mio_uint32_t i;
printf ("XXXXXXXXXXXXXXXXx RECEIVED XXXXXXXXXXXXXXXXXXXXXXXXX\n");
pi = mio_dns_make_packet_info(mio_svc_dnc_getmio(dnc), data, dlen);
if (!pi) goto no_valid_reply;
//mio_dns_parse_packet (dnc, mio_dns_msg_to_pkt(reqmsg),
mio_dns_bdns_t bdns;
mio_dns_parse_packet (dnc, data, dlen, &bdns);
if (pi->hdr.rcode != MIO_DNS_RCODE_NOERROR) goto no_valid_reply;
if (pi->ancount < 0) goto no_valid_reply;
for (i = 0; i < pi->ancount; i++)
{
if (pi->rr.an[i].rrtype == MIO_DNS_RRT_A)
{
printf ("GOT THE RIGHT ANSSER .... \n");
goto done;
}
}
goto no_valid_reply;
}
else
{
no_valid_reply:
printf ("XXXXXXXXXXXXXXXXx NO REPLY XXXXXXXXXXXXXXXXXXXXXXXXX\n");
}
done:
if (pi) mio_dns_free_packet_info(mio_svc_dnc_getmio(dnc), pi);
}
/* ========================================================================= */
@ -839,18 +857,18 @@ for (i = 0; i < 5; i++)
{
mio_dns_bqr_t qrs[] =
{
{ "code.miflux.com", MIO_DNS_QTYPE_A, MIO_DNS_QCLASS_IN },
{ "code.miflux.com", MIO_DNS_QTYPE_AAAA, MIO_DNS_QCLASS_IN },
{ "code.abiyo.net", MIO_DNS_QTYPE_A, MIO_DNS_QCLASS_IN },
{ "code6.abiyo.net", MIO_DNS_QTYPE_AAAA, MIO_DNS_QCLASS_IN },
{ "abiyo.net", MIO_DNS_QTYPE_MX, MIO_DNS_QCLASS_IN }
{ "code.miflux.com", MIO_DNS_RRT_A, MIO_DNS_RRC_IN },
{ "code.miflux.com", MIO_DNS_RRT_AAAA, MIO_DNS_RRC_IN },
{ "code.abiyo.net", MIO_DNS_RRT_A, MIO_DNS_RRC_IN },
{ "code6.abiyo.net", MIO_DNS_RRT_AAAA, MIO_DNS_RRC_IN },
{ "abiyo.net", MIO_DNS_RRT_MX, MIO_DNS_RRC_IN }
};
mio_dns_brr_t rrs[] =
{
{ MIO_DNS_RR_PART_ANSWER, "code.miflux.com", MIO_DNS_QTYPE_A, MIO_DNS_QCLASS_IN, 86400, 0, MIO_NULL },
{ MIO_DNS_RR_PART_ANSWER, "code.miflux.com", MIO_DNS_QTYPE_AAAA, MIO_DNS_QCLASS_IN, 86400, 0, MIO_NULL },
{ MIO_DNS_RR_PART_AUTHORITY, "dns.miflux.com", MIO_DNS_QTYPE_NS, MIO_DNS_QCLASS_IN, 86400, 0, MIO_NULL }//,
//{ MIO_DNS_RR_PART_ANSERT, "www.miflux.com", MIO_DNS_QTYPE_CNAME, MIO_DNS_QCLASS_IN, 60, 15, "code.miflux.com" }
{ MIO_DNS_RR_PART_ANSWER, "code.miflux.com", MIO_DNS_RRT_A, MIO_DNS_RRC_IN, 86400, 0, MIO_NULL },
{ MIO_DNS_RR_PART_ANSWER, "code.miflux.com", MIO_DNS_RRT_AAAA, MIO_DNS_RRC_IN, 86400, 0, MIO_NULL },
{ MIO_DNS_RR_PART_AUTHORITY, "dns.miflux.com", MIO_DNS_RRT_NS, MIO_DNS_RRC_IN, 86400, 0, MIO_NULL }//,
//{ MIO_DNS_RR_PART_ANSERT, "www.miflux.com", MIO_DNS_RRT_CNAME, MIO_DNS_RRC_IN, 60, 15, "code.miflux.com" }
};
mio_dns_beopt_t beopt[] =
@ -870,7 +888,7 @@ for (i = 0; i < 5; i++)
beopt
};
mio_dns_bdns_t qhdr =
mio_dns_bhdr_t qhdr =
{
-1, /* id */
0, /* qr */
@ -884,7 +902,7 @@ for (i = 0; i < 5; i++)
MIO_DNS_RCODE_NOERROR /* rcode */
};
mio_dns_bdns_t rhdr =
mio_dns_bhdr_t rhdr =
{
0x1234, /* id */
1, /* qr */
@ -903,7 +921,7 @@ for (i = 0; i < 5; i++)
mio_svc_dnc_sendmsg (dnc, &rhdr, qrs, MIO_COUNTOF(qrs), rrs, MIO_COUNTOF(rrs), &qedns, MIO_NULL);
}
if (mio_svc_dnc_resolve(dnc, "www.microsoft.com", MIO_DNS_QTYPE_A, on_dnc_resolve) <= -1)
if (mio_svc_dnc_resolve(dnc, "www.microsoft.com", MIO_DNS_RRT_A, on_dnc_resolve) <= -1)
{
printf ("resolve attempt failure ---> code.miflux.com\n");
}