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REORG: quic: Move the QUIC DCID parser to quic_sock.c

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Move quic_get_dgram_dcid() from quic_conn.c to quic_sock.c because
only used in this file and define it as static.
This commit is contained in:
Frédéric Lécaille 2023-11-27 12:01:36 +01:00
parent 3b91756ebe
commit f74d882ef0
3 changed files with 42 additions and 43 deletions
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2
include/haproxy/quic_conn.h
View File

@ -191,8 +191,6 @@ void quic_set_connection_close(struct quic_conn *qc, const struct quic_err err);
void quic_set_tls_alert(struct quic_conn *qc, int alert);
int quic_set_app_ops(struct quic_conn *qc, const unsigned char *alpn, size_t alpn_len);
int qc_check_dcid(struct quic_conn *qc, unsigned char *dcid, size_t dcid_len);
int quic_get_dgram_dcid(unsigned char *buf, const unsigned char *end,
unsigned char **dcid, size_t *dcid_len);
struct quic_cid quic_derive_cid(const struct quic_cid *orig,
const struct sockaddr_storage *addr);
int quic_get_cid_tid(const unsigned char *cid, size_t cid_len,

41
src/quic_conn.c
View File

@ -1592,47 +1592,6 @@ int qc_check_dcid(struct quic_conn *qc, unsigned char *dcid, size_t dcid_len)
return 0;
}
/* Retrieve the DCID from a QUIC datagram or packet at <pos> position,
* <end> being at one byte past the end of this datagram.
* Returns 1 if succeeded, 0 if not.
*/
int quic_get_dgram_dcid(unsigned char *pos, const unsigned char *end,
unsigned char **dcid, size_t *dcid_len)
{
int ret = 0, long_header;
size_t minlen, skip;
TRACE_ENTER(QUIC_EV_CONN_RXPKT);
if (!(*pos & QUIC_PACKET_FIXED_BIT)) {
TRACE_PROTO("fixed bit not set", QUIC_EV_CONN_RXPKT);
goto err;
}
long_header = *pos & QUIC_PACKET_LONG_HEADER_BIT;
minlen = long_header ? QUIC_LONG_PACKET_MINLEN :
QUIC_SHORT_PACKET_MINLEN + QUIC_HAP_CID_LEN + QUIC_TLS_TAG_LEN;
skip = long_header ? QUIC_LONG_PACKET_DCID_OFF : QUIC_SHORT_PACKET_DCID_OFF;
if (end - pos < minlen)
goto err;
pos += skip;
*dcid_len = long_header ? *pos++ : QUIC_HAP_CID_LEN;
if (*dcid_len > QUIC_CID_MAXLEN || end - pos <= *dcid_len)
goto err;
*dcid = pos;
ret = 1;
leave:
TRACE_LEAVE(QUIC_EV_CONN_RXPKT);
return ret;
err:
TRACE_PROTO("wrong datagram", QUIC_EV_CONN_RXPKT);
goto leave;
}
/* Notify upper layer of a fatal error which forces to close the connection. */
void qc_notify_err(struct quic_conn *qc)
{

42
src/quic_sock.c
View File

@ -208,6 +208,48 @@ struct task *quic_lstnr_dghdlr(struct task *t, void *ctx, unsigned int state)
return t;
}
/* Retrieve the DCID from a QUIC datagram or packet at <pos> position,
* <end> being at one byte past the end of this datagram.
* Returns 1 if succeeded, 0 if not.
*/
static int quic_get_dgram_dcid(unsigned char *pos, const unsigned char *end,
unsigned char **dcid, size_t *dcid_len)
{
int ret = 0, long_header;
size_t minlen, skip;
TRACE_ENTER(QUIC_EV_CONN_RXPKT);
if (!(*pos & QUIC_PACKET_FIXED_BIT)) {
TRACE_PROTO("fixed bit not set", QUIC_EV_CONN_RXPKT);
goto err;
}
long_header = *pos & QUIC_PACKET_LONG_HEADER_BIT;
minlen = long_header ? QUIC_LONG_PACKET_MINLEN :
QUIC_SHORT_PACKET_MINLEN + QUIC_HAP_CID_LEN + QUIC_TLS_TAG_LEN;
skip = long_header ? QUIC_LONG_PACKET_DCID_OFF : QUIC_SHORT_PACKET_DCID_OFF;
if (end - pos < minlen)
goto err;
pos += skip;
*dcid_len = long_header ? *pos++ : QUIC_HAP_CID_LEN;
if (*dcid_len > QUIC_CID_MAXLEN || end - pos <= *dcid_len)
goto err;
*dcid = pos;
ret = 1;
leave:
TRACE_LEAVE(QUIC_EV_CONN_RXPKT);
return ret;
err:
TRACE_PROTO("wrong datagram", QUIC_EV_CONN_RXPKT);
goto leave;
}
/* Retrieve the DCID from the datagram found at <pos> position and deliver it to the
* correct datagram handler.
* Return 1 if a correct datagram could be found, 0 if not.