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added mio_dns_rcode_to_bcstr(), mio_dns_find_client_cookie_in_msg.

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deleted the cookie_verified field from mio_dns_pkt_info_t
added mio_svc_dnc_checkclientcookie()
This commit is contained in:
hyung-hwan
2020-07-04 08:03:36 +00:00
parent 26b95ba5f7
commit 8b1ccab4c8
4 changed files with 143 additions and 23 deletions
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29
mio/lib/mio-dns.h
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@ -458,7 +458,6 @@ struct mio_dns_pkt_info_t
mio_uint8_t version;
mio_uint8_t dnssecok;
mio_dns_cookie_t cookie;
int cookie_verified; /* UGLY: set via mio_svc_dnc_resolve() only. mio_dns_make_packet_info() doesn't set this */
} edns;
mio_uint16_t qdcount; /* number of questions */
@ -540,15 +539,27 @@ MIO_EXPORT mio_dns_msg_t* mio_svc_dnc_resolve (
mio_oow_t xtnsize
);
/*
* -1: cookie in the request but no client cookie in the response. this may be ok or not ok depending on your policy
* 0: client cookie mismatch in the request in the response
* 1: client cookie match in the request in the response
* 2: no client cookie in the requset. so it deson't case about the response
*/
MIO_EXPORT int mio_svc_dnc_checkclientcookie (
mio_svc_dnc_t* dnc,
mio_dns_msg_t* reqmsg,
mio_dns_pkt_info_t* respi
);
/* ---------------------------------------------------------------- */
MIO_EXPORT mio_dns_pkt_info_t* mio_dns_make_packet_info (
MIO_EXPORT mio_dns_pkt_info_t* mio_dns_make_pkt_info (
mio_t* mio,
const mio_dns_pkt_t* pkt,
mio_oow_t len
);
MIO_EXPORT void mio_dns_free_packet_info (
MIO_EXPORT void mio_dns_free_pkt_info (
mio_t* mio,
mio_dns_pkt_info_t* pi
);
@ -577,6 +588,18 @@ MIO_EXPORT void mio_dns_free_msg (
mio_dns_msg_t* msg
);
/*
* return the pointer to the client cookie data in the packet.
* if cookie is not MIO_NULL, it copies the client cookie there.
*/
MIO_EXPORT mio_uint8_t* mio_dns_find_client_cookie_in_msg (
mio_dns_msg_t* reqmsg,
mio_uint8_t (*cookie)[MIO_DNS_COOKIE_CLIENT_LEN]
);
MIO_EXPORT mio_bch_t* mio_dns_rcode_to_bcstr (
mio_dns_rcode_t rcode
);
#if defined(__cplusplus)
}