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changed dns-cli.c to initialize the dns cookie key

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This commit is contained in:
hyung-hwan 2020-07-03 15:56:33 +00:00
parent dd83db4943
commit 26b95ba5f7
4 changed files with 24 additions and 11 deletions
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14
mio/lib/dns-cli.c
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@ -725,6 +725,7 @@ mio_svc_dnc_t* mio_svc_dnc_start (mio_t* mio, const mio_skad_t* serv_addr, const
mio_svc_dnc_t* dnc = MIO_NULL;
mio_dev_sck_make_t mkinfo;
dnc_sck_xtn_t* sckxtn;
mio_ntime_t now;
dnc = (mio_svc_dnc_t*)mio_callocmem(mio, MIO_SIZEOF(*dnc));
if (MIO_UNLIKELY(!dnc)) goto oops;
@ -769,6 +770,12 @@ mio_svc_dnc_t* mio_svc_dnc_start (mio_t* mio, const mio_skad_t* serv_addr, const
if (mio_dev_sck_bind(dnc->udp_sck, &bi) <= -1) goto oops;
}
/* initialize the dns cookie key */
mio_gettime (mio, &now);
MIO_MEMCPY (&dnc->cookie.key[0], &now.sec, (MIO_SIZEOF(now.sec) < 8? MIO_SIZEOF(now.sec): 8));
MIO_MEMCPY (&dnc->cookie.key[8], &now.nsec, (MIO_SIZEOF(now.nsec) < 8? MIO_SIZEOF(now.nsec): 8));
MIO_SVCL_APPEND_SVC (&mio->actsvc, (mio_svc_t*)dnc);
MIO_DEBUG1 (mio, "DNC - STARTED SERVICE %p\n", dnc);
return dnc;
@ -1019,9 +1026,14 @@ mio_dns_msg_t* mio_svc_dnc_resolve (mio_svc_dnc_t* dnc, const mio_bch_t* qname,
if (resolve_flags & MIO_SVC_DNC_RESOLVE_FLAG_COOKIE)
{
beopt_cookie.code = MIO_DNS_EOPT_COOKIE;
beopt_cookie.dptr = &dnc->cookie.data;
beopt_cookie.dlen = MIO_DNS_COOKIE_CLIENT_LEN;
if (dnc->cookie.server_len > 0) beopt_cookie.dlen += dnc->cookie.server_len;
beopt_cookie.dptr = &dnc->cookie.data;
/* compute the client cookie */
MIO_STATIC_ASSERT (MIO_SIZEOF(dnc->cookie.data.client) == MIO_DNS_COOKIE_CLIENT_LEN);
mio_sip_hash_24 (dnc->cookie.key, &dnc->serv_addr, MIO_SIZEOF(dnc->serv_addr), dnc->cookie.data.client);
qedns.beonum = 1;
qedns.beoptr = &beopt_cookie;

1
mio/lib/mio-dns.h
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@ -434,6 +434,7 @@ struct mio_dns_cookie_t
mio_dns_cookie_data_t data;
mio_uint8_t client_len;
mio_uint8_t server_len;
mio_uint8_t key[16];
};
/* ---------------------------------------------------------------- */

8
mio/lib/mio-utl.h
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@ -974,10 +974,10 @@ static MIO_INLINE mio_uint128_t mio_bswap128 (mio_uint128_t x)
* SIP-HASH-PRF
* ========================================================================= */
MIO_EXPORT void mio_sip_hash_24 (
const mio_uint8_t key[16],
mio_uint8_t* dptr,
mio_oow_t dlen,
mio_uint8_t out[8]
const mio_uint8_t key[16],
const void* dptr,
mio_oow_t dlen,
mio_uint8_t out[8]
);
#ifdef __cplusplus

12
mio/lib/utl-siph.c
View File

@ -169,17 +169,17 @@ static const mio_uint8_t sip_init_v_bin[] =
XOR64_TO((v0), (m)); \
} while (0)
void mio_sip_hash_24 (const mio_uint8_t key[16], mio_uint8_t *dptr, mio_oow_t dlen, mio_uint8_t out[8])
void mio_sip_hash_24 (const mio_uint8_t key[16], const void* dptr, mio_oow_t dlen, mio_uint8_t out[8])
{
sip_uint64_t k0, k1;
sip_uint64_t v0, v1, v2, v3;
sip_uint64_t m, b;
mio_oow_t rem;
mio_uint8_t* end;
const mio_uint8_t* ptr, * end;
rem = dlen & 7; /* dlen % 8 */
end = dptr + dlen - rem;
ptr = (const mio_uint8_t*)dptr;
end = ptr + dlen - rem;
k0 = U8TO64_LE(key);
k1 = U8TO64_LE(key + 8);
@ -189,9 +189,9 @@ void mio_sip_hash_24 (const mio_uint8_t key[16], mio_uint8_t *dptr, mio_oow_t dl
v2 = k0; XOR64_TO(v2, sip_init_v[2]);
v3 = k1; XOR64_TO(v3, sip_init_v[3]);
for (; dptr != end; dptr += 8)
for (; ptr != end; ptr += 8)
{
m = U8TO64_LE(dptr);
m = U8TO64_LE(ptr);
SIP_2_ROUND (m, v0, v1, v2, v3);
}