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ntpd: fix refid reported in server mode, closes 13056

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function                                             old     new   delta
resolve_peer_hostname                                129     196     +67
recv_and_process_peer_pkt                           2475    2476      +1
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/0 up/down: 68/0)               Total: 68 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2020-07-20 00:04:33 +02:00
parent 06a407c628
commit 9a2d899273
4 changed files with 41 additions and 7 deletions
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7
include/libbb.h
View File

@ -2063,6 +2063,13 @@ unsigned sha3_end(sha3_ctx_t *ctx, void *resbuf) FAST_FUNC;
typedef struct md5_ctx_t md5sha_ctx_t;
#define md5sha_hash md5_hash
#define sha_end sha1_end
enum {
MD5_OUTSIZE = 16,
SHA1_OUTSIZE = 20,
SHA256_OUTSIZE = 32,
SHA512_OUTSIZE = 64,
SHA3_OUTSIZE = 28,
};
extern uint32_t *global_crc32_table;
uint32_t *crc32_filltable(uint32_t *tbl256, int endian) FAST_FUNC;

2
mailutils/popmaildir.c
View File

@ -156,7 +156,7 @@ int popmaildir_main(int argc UNUSED_PARAM, char **argv)
md5_ctx_t ctx;
char hex[16 * 2 + 1];
} md5;
uint32_t res[16 / 4];
uint32_t res[MD5_OUTSIZE / 4];
char *s = strchr(buf, '>');
if (s)

31
networking/ntpd.c
View File

@ -337,6 +337,9 @@ typedef struct {
#endif
int p_fd;
int datapoint_idx;
#if ENABLE_FEATURE_NTPD_SERVER
uint32_t p_refid;
#endif
uint32_t lastpkt_refid;
uint8_t lastpkt_status;
uint8_t lastpkt_stratum;
@ -413,7 +416,9 @@ struct globals {
* in stratum 2+ packets, it's IPv4 address or 4 first bytes
* of MD5 hash of IPv6
*/
#if ENABLE_FEATURE_NTPD_SERVER
uint32_t refid;
#endif
uint8_t ntp_status;
/* precision is defined as the larger of the resolution and time to
* read the clock, in log2 units. For instance, the precision of a
@ -836,6 +841,24 @@ reset_peer_stats(peer_t *p, double offset)
VERB6 bb_error_msg("%s->lastpkt_recv_time=%f", p->p_dotted, p->lastpkt_recv_time);
}
#if ENABLE_FEATURE_NTPD_SERVER
static uint32_t calculate_refid(len_and_sockaddr *lsa)
{
# if ENABLE_FEATURE_IPV6
if (lsa->u.sa.sa_family == AF_INET6) {
md5_ctx_t md5;
uint32_t res[MD5_OUTSIZE / 4];
md5_begin(&md5);
md5_hash(&md5, &lsa->u.sin6.sin6_addr, sizeof(lsa->u.sin6.sin6_addr));
md5_end(&md5, res);
return res[0];
}
# endif
return lsa->u.sin.sin_addr.s_addr;
}
#endif
static len_and_sockaddr*
resolve_peer_hostname(peer_t *p)
{
@ -847,6 +870,9 @@ resolve_peer_hostname(peer_t *p)
p->p_dotted = xmalloc_sockaddr2dotted_noport(&lsa->u.sa);
VERB1 if (strcmp(p->p_hostname, p->p_dotted) != 0)
bb_error_msg("'%s' is %s", p->p_hostname, p->p_dotted);
#if ENABLE_FEATURE_NTPD_SERVER
p->p_refid = calculate_refid(p->p_lsa);
#endif
p->dns_errors = 0;
return lsa;
}
@ -1764,7 +1790,10 @@ update_local_clock(peer_t *p)
G.reftime = G.cur_time;
G.ntp_status = p->lastpkt_status;
G.refid = p->lastpkt_refid;
#if ENABLE_FEATURE_NTPD_SERVER
/* Our current refid is the IPv4 (or md5-hashed IPv6) address of the peer we took time from: */
G.refid = p->p_refid;
#endif
G.rootdelay = p->lastpkt_rootdelay + p->lastpkt_delay;
dtemp = p->filter_jitter; // SQRT(SQUARE(p->filter_jitter) + SQUARE(G.cluster_jitter));
dtemp += MAXD(p->filter_dispersion + FREQ_TOLERANCE * (G.cur_time - p->lastpkt_recv_time) + abs_offset, MINDISP);

2
networking/tls.c
View File

@ -212,8 +212,6 @@
enum {
SHA_INSIZE = 64,
SHA1_OUTSIZE = 20,
SHA256_OUTSIZE = 32,
AES128_KEYSIZE = 16,
AES256_KEYSIZE = 32,