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191 commits

Author SHA1 Message Date
Miroslav Lichvar
f93f2a15af ntp: check also reference timestamp in test3 
Zero reference timestamp doesn't pass test7, but only before we reach
the next NTP era.
 2015-03-27 10:37:54 +01:00
Miroslav Lichvar
fad97e12da ntp: fix maxdelayratio test 
This was broken in commit 8fbfe55e.
 2015-01-29 12:49:02 +01:00
Miroslav Lichvar
547272e66c ntp: use different value for invalid socket in ntp_core 
This should make it easier to see invalid sockets leaking from ntp_core
to ntp_io.
 2015-01-07 16:14:29 +01:00
Miroslav Lichvar
35e11ffe60 ntp: fix length check of NTPv4 extension fields 
Don't allow extension fields shorter than 16 bytes.
 2015-01-07 14:12:29 +01:00
Miroslav Lichvar
52e12e42e5 ntp: open server socket only when access is allowed 
When changing access configuration, check if any address is allowed and
open/close the server socket as needed.
 2015-01-06 16:35:12 +01:00
Miroslav Lichvar
5214d42c07 ntp: count references to NTP server sockets 
Server sockets are now explicitly opened and closed for normal NTP
server, NTP broadcast and NTP peering. This will allow closing the
NTP port when not needed.
 2015-01-06 16:33:49 +01:00
Miroslav Lichvar
6d1dda0fad ntp: rename NIO_Get*Socket functions 2015-01-05 14:17:21 +01:00
Miroslav Lichvar
6688f40325 sources: allow setting minsamples and maxsamples for each source 
The minsamples and maxsamples directives now set the default value,
which can be overriden for individual sources in the server/peer/pool
and refclock directives.
 2014-12-03 16:27:51 +01:00
Miroslav Lichvar
42dd5caa1b ntp: don't replace source instance when changing address 
Add new functions to change source's reference ID/address and reset the
instance. Use that instead of destroying and creating a new instance
when the NTP address is changed.
 2014-12-01 18:40:47 +01:00
Miroslav Lichvar
aaf744dfab ntp: return status from NCR_ProcessKnown() 2014-11-24 16:14:04 +01:00
Miroslav Lichvar
dccd61966a ntp: fix accepting requests from configured sources 
When using server socket to send client requests (acquisitionport 123)
and currently not waiting for a reply, the socket check will fail for
client requests from the source.

The check needs to be moved to correctly handle the requests as from an
unknown source.
 2014-11-21 11:43:47 +01:00
Miroslav Lichvar
29c1df4610 ntp: allow changing address of core instance 2014-11-03 11:15:20 +01:00
Miroslav Lichvar
ccaf0874e1 ntp: take auto_offline sources offline before sending new request 2014-10-23 15:06:00 +02:00
Miroslav Lichvar
1aecc51c70 ntp: add version option to server/peer directive 2014-10-20 16:14:17 +02:00
Miroslav Lichvar
7958b1764e ntp: remove debug messages in slew handler 2014-10-20 12:22:17 +02:00
Miroslav Lichvar
63af4889f6 sources: drop selectable flag 
This is no longer needed with new NTP packet processing as the sources
are always selectable after first sample is accumulated.
 2014-10-20 11:02:07 +02:00
Miroslav Lichvar
819b8eb73d ntp: fix Clang warning 2014-10-15 12:40:12 +02:00
Miroslav Lichvar
a78bf0c34e ntp: merge broadcast code with ntp_core 2014-10-15 12:27:46 +02:00
Miroslav Lichvar
e0059bcc6b ntp: define NTP_MAX_STRATUM for other modules 2014-10-14 17:25:55 +02:00
Miroslav Lichvar
8fbfe55e92 ntp: update packet processing to NTPv4 (RFC 5905) 2014-10-14 16:52:22 +02:00
Miroslav Lichvar
740e8130dd ntp: clamp value set by minstratum option 2014-10-13 15:10:15 +02:00
Miroslav Lichvar
361726b3ae keys: store IDs in uint32_t 2014-09-26 14:14:54 +02:00
Miroslav Lichvar
e1accce498 ntp: print warning 10 years before supported time ends 2014-09-09 17:08:30 +02:00
Miroslav Lichvar
4e66b5ce8a ntp: don't stop online burst when sending fails 
Don't stop online burst for unreachable sources until sending succeeds.
This is mainly useful with iburst when chronyd is started before the
network is configured.
 2014-08-20 16:54:26 +02:00
Miroslav Lichvar
d446950c6a ntp: don't adjust polling interval when sending fails 2014-08-20 16:54:26 +02:00
Miroslav Lichvar
e3c77f9b4b ntp: return with status from functions sending packets 2014-08-20 16:54:26 +02:00
Miroslav Lichvar
badf97d4ba ntp: restart timer when poll interval changes on reset 2014-08-20 16:54:26 +02:00
Miroslav Lichvar
ba283e6b6e ntp: add function to restart transmit timer 2014-08-20 16:54:26 +02:00
Miroslav Lichvar
cd5105b1db ntp: use NTP instead of echo for presend 
Switch to NTP for presend as the echo service (RFC 862) is rarely
enabled. When presend is active, send an NTP client packet to the
server/peer and ignore the reply.

This also fixes presend with separate client sockets. The destination
port can't be changed on connected sockets, so the echo packet was sent
to the NTP port instead of the echo port.
 2014-08-15 16:49:45 +02:00
Miroslav Lichvar
474b2af1a6 util: add support for other NTP eras 
NTP timestamps use only 32 bits to count seconds and the current NTP era
ends in 2036. Add support for converting NTP timestamps from other NTP
eras on systems with 64-bit time_t.

The earliest assumed NTP time is set by the configure script (by default
to 50 years before the date of the build) and earlier NTP timestamps
underflow to the following NTP era.
 2014-08-15 11:18:40 +02:00
Miroslav Lichvar
cb88cea3c4 ntp: move packet size asserts to ntp_core 2014-08-15 10:58:52 +02:00
Miroslav Lichvar
a9b9e7befe ntp: create new socket for each client request 
Create a new connected client socket before each request and close it
when a valid reply is received.

This is useful when the network configuration is changed and the client
socket should be reconnected, but the old bound address remains valid
and sendmsg() doesn't return with an error.
 2014-08-15 10:58:43 +02:00
Miroslav Lichvar
cb74f3e7ad Update copyright years 2014-06-05 18:06:56 +02:00
Miroslav Lichvar
a646cf7923 logging: convert rate limited messages to debug messages 2014-06-04 12:26:27 +02:00
Miroslav Lichvar
3f3ebd3b3b ntp: update comment in get_transmit_delay() 2014-06-03 18:10:27 +02:00
Miroslav Lichvar
3ebebac695 ntp: reset NCR instance thoroughly when switching to offline 2014-06-02 16:46:53 +02:00
Miroslav Lichvar
779e40ed66 ntp: delay initial transmission until first resolving ends 
This will be needed to prevent loading of dump files after sources have
already accumulated samples and possibly reference was already updated
when async resolving of sources is implemented.
 2014-04-29 12:42:45 +02:00
Miroslav Lichvar
08faca03b7 ntp: close client socket when offline 2014-04-10 18:02:29 +02:00
Miroslav Lichvar
3217421797 ntp: close only client socket when destroying NCR instance 2014-04-10 17:50:24 +02:00
Miroslav Lichvar
8671002bd7 sources: add flag that source is active 
When source is set as active, it's receiving reachability updates (e.g.
offline NTP sources are not active).

Also add function to count active sources.
 2014-04-10 17:48:58 +02:00
Miroslav Lichvar
bc6b40568d ntp: reduce burst timeout to 2.0 
With the new special mode ending it can be now equal to the burst
polling interval.
 2014-04-10 17:16:30 +02:00
Miroslav Lichvar
60d8586b6d ntp: reduce burst timeout to 2.5 seconds 
This reduces the maximum time initstepslew can take.
 2014-04-09 09:59:58 +02:00
Miroslav Lichvar
70928dba52 ntp: set maximum number of iburst samples to size of reach register 
Explicitly set the number of iburst samples to the size of the register
to make sure there are at least 7 reachability updates and the
initstepslew mode can be ended.
 2014-04-09 09:59:57 +02:00
Miroslav Lichvar
0094128ca6 sources: split source selection from sample accumulation 
This will allow postponing source selection and reference update, which
could be useful in burst modes.
 2014-04-08 17:00:47 +02:00
Miroslav Lichvar
73e4986866 ntp: fix comment on NCR_ProcessUnknown 2014-03-26 11:24:25 +01:00
Miroslav Lichvar
91e74c704b ntp: accept packets from unknown sources only from server sockets 2014-03-26 11:18:18 +01:00
Miroslav Lichvar
cf12d72f21 ntp: use separate connected sockets for each server 
If acquisitionport is set to 0 (default), create and connect a new
socket for each server instead of using one socket per address family
for all servers.
 2014-03-25 15:27:18 +01:00
Miroslav Lichvar
f2c4ab09a8 ntp: check if packet was received by right socket 2014-03-25 15:24:38 +01:00
Miroslav Lichvar
9a657cd4a3 ntp: store socket in NTP instance 
This is preparation for separate client sockets.
 2014-03-25 15:22:59 +01:00
Miroslav Lichvar
308de81221 ntp: split local_ip_addr from NTP_Remote_Address struct 2014-03-25 11:34:35 +01:00
Miroslav Lichvar
7aa4bbf621 ntp: set minpoll from received KoD RATE at most to 10 
Limit changing minpoll to a reasonable maximum in case the server is
broken or temporarily misconfigured.
 2014-03-21 15:32:14 +01:00
Miroslav Lichvar
5afddad0d2 ntp: print warning when source is added with unknown key 2014-03-21 14:36:51 +01:00
Miroslav Lichvar
0380cf0c76 ntp: reset negative minpoll or maxpoll to default values 2014-03-21 13:25:14 +01:00
Miroslav Lichvar
8d02e5f680 ntp: make use of NCR_ProcessUnknown in NCR_ProcessKnown 
After recent changes the code in NCR_ProcessKnown is now identical and
can be replaced with NCR_ProcessUnknown call.
 2014-03-21 13:20:34 +01:00
Miroslav Lichvar
f9e2213afd ntp: don't store tx time stamp when replying to known source 2014-03-21 13:20:31 +01:00
Miroslav Lichvar
8b362ba3e7 ntp: don't reply to known source if missing key or invalid auth 
This is now similar to replying to unknown sources.
 2014-03-21 13:20:29 +01:00
Miroslav Lichvar
a26058d425 ntp: don't send requests with unknown key 
There is no point in sending a request if the configured key is missing.
A reply would be ignored anyway.
 2014-03-21 13:20:27 +01:00
Miroslav Lichvar
c14b81f3a9 ntp: remove unnecessary KEY_KeyKnown calls 2014-03-21 13:20:25 +01:00
Miroslav Lichvar
54211f0f6e Update comment on setting poll in reply packet 2014-01-17 18:10:32 +01:00
Miroslav Lichvar
4b5f465026 Don't allow maxpoll to be set shorter than minpoll 2014-01-17 17:37:07 +01:00
Miroslav Lichvar
8df1bedb1b Remove forgotten macros 2013-11-27 16:11:19 +01:00
Miroslav Lichvar
1c3aff37de Convert TRACEON LOG messages to DEBUG_LOG 2013-11-27 14:35:41 +01:00
Miroslav Lichvar
0731cd6950 Fix log messages 2013-11-26 18:41:51 +01:00
Miroslav Lichvar
922e2fe23b Fix Clang static analyzer warnings about never read values 2013-10-07 17:50:27 +02:00
Miroslav Lichvar
d5b737cce8 Update copyright years 2013-06-19 12:50:26 +02:00
Miroslav Lichvar
9666831818 Use UTI_DiffTimevalsToDouble to calculate theta 2013-06-12 15:30:28 +02:00
Miroslav Lichvar
ff8e04f9ba Fix fabs use on delay 2013-06-12 15:30:28 +02:00
Miroslav Lichvar
8aa9eb19c8 Remove unnecessary adjtimex calls 2013-06-06 19:38:36 +02:00
Miroslav Lichvar
2ceb3c89ca Move NTP_int32 conversion functions to util.c 2013-06-05 12:49:47 +02:00
Miroslav Lichvar
32bf32e7d5 Don't use uninitialized value in receive_packet() 2013-06-05 09:56:37 +02:00
Miroslav Lichvar
cce7a5f15e Improve peer polling in symmetric mode 
If the remote stratum is higher than ours, try to lock on the peer's
polling to minimize our response time by slightly extending our delay or
waiting for the peer to catch up with us as the random part in the
actual interval is reduced. If the remote stratum is equal to ours, try
to interleave evenly with the peer.
 2013-06-05 09:32:20 +02:00
Miroslav Lichvar
288043c13b Save remote poll only with valid packets 2013-06-04 15:43:59 +02:00
Miroslav Lichvar
78ae4ebfaa Fix peer polling with shorter remote poll 
If the remote peer uses a polling interval shorter than the local
minimum, the local peer will be unable to send any packets as the
timeout will be updated on every received valid packet and will never
expire.

Modify the delay calculation to aim at poll interval away since the last
transmit.

Also, share the delay calculation code with transmit_timeout().
 2013-06-04 12:52:49 +02:00
Miroslav Lichvar
cf700a0084 Requeue transmit timeout only with valid packets 2013-06-04 12:45:47 +02:00
Miroslav Lichvar
60a25f6e71 Ignore packets from offline sources 
Rework the logic in transmit_timeout() to change the online status on
the following timeout to allow ignoring packets from offline sources.
 2013-06-03 18:57:55 +02:00
Miroslav Lichvar
030e3b2dab Make receive_packet() more readable 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
5079f6bbff In burst count only accumulated samples as good 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
afceb9d24e Slew only non-zero local timestamps in ntp core 2013-06-03 16:03:07 +02:00
Miroslav Lichvar
a2656a20bc Fix poll timeout with symmetric peer and poll 0 2013-06-03 16:03:05 +02:00
Miroslav Lichvar
359d444343 Remove unncessary return statements 2013-05-21 15:08:34 +02:00
Miroslav Lichvar
ebae435398 Log online/offline status change for burst sources too. 2013-05-15 11:03:18 +02:00
Miroslav Lichvar
73d4eaafbb Reply to NTPv1 and NTPv2 packets with same version 2013-05-02 11:10:48 +02:00
Miroslav Lichvar
cf00179964 Reply to NTPv1 packets 2013-05-02 11:10:25 +02:00
Miroslav Lichvar
0bb772c575 Fix delta calculation with extreme frequency offsets 
This should prevent chronyd from getting stuck and refusing new samples
due to failing test4 when the current measured frequency offset is close
to 1.0. That can happen when the system clock is stepped forward behind
chronyd's back.
 2013-03-08 14:39:13 +01:00
Miroslav Lichvar
df6c2a432f Fuzz transmit timestamp 
Add random bits below clock precision to the timestamp to make
it less predictable.
 2012-05-23 12:06:16 +02:00
Miroslav Lichvar
0c738d84af Update copyright years 2012-02-28 13:11:56 +01:00
Miroslav Lichvar
777303f130 Add support for different authentication hashes 
Allow different hash functions to be used in the NTP and cmdmon
protocols. This breaks the cmdmon protocol compatibility. Extended key
file format is used to specify the hash functions for chronyd and new
authhash command is added to chronyc. MD5 is the default and the only
function included in the chrony source code, other functions will be
available from libraries.
 2011-11-02 13:53:00 +01:00
Miroslav Lichvar
cc3f5962b8 Merge NCR_Process functions 2011-09-01 16:25:13 +02:00
Miroslav Lichvar
5c36342958 Use initial delay also for burst samples 2011-08-26 18:34:00 +02:00
Miroslav Lichvar
27b0b5824a Disable maxdelayratio test by default 
Change default maxdelayratio from 16384.0 to 0.0. A value larger
than 1.0 is required to enable the test.
 2011-08-12 15:38:05 +02:00
Miroslav Lichvar
1d72d22bc5 Match skew in ntp_core to sourcestats skew 2011-08-12 15:38:05 +02:00
Miroslav Lichvar
1b8547059a Set leap status by enum 2011-06-13 17:02:42 +02:00
Miroslav Lichvar
91279a0f28 Store reference IDs in uint32_t 2011-06-13 15:34:16 +02:00
Miroslav Lichvar
8cc7ebffa9 Accept packets with compatible NTP versions 
All incoming NTP packets are now required to have version 2, 3 or 4.
 2011-05-25 16:59:40 +02:00
Miroslav Lichvar
da2c8d9076 Use config.h 2011-05-24 18:07:06 +02:00
Miroslav Lichvar
896dad9224 Fix warnings produced by latest gcc 2011-02-15 18:55:34 +01:00
Miroslav Lichvar
e8c5d15690 Remove CVS headers 2011-01-28 12:56:09 +01:00
Miroslav Lichvar
e63cba05b2 Update copyright 2011-01-27 13:05:26 +01:00
Miroslav Lichvar
930a41b845 Don't send packet in last auto_offline transmit timeout 2010-12-17 18:09:10 +01:00
Miroslav Lichvar
323f0d187e Fix switching offline auto_offline source to online 2010-12-17 18:09:10 +01:00