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- Log -----------------------------------------------------------------
commit a4bd7f18000214ea4967a6a4d84a4a3e48d88a86
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Mon Feb 26 17:23:06 2018 +0100
test: make 119-smoothtime more reliable
commit 5308e0a25f9efdf01ead0b77e769bbb494661cd0
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Thu Feb 22 17:30:23 2018 +0100
sources: include maxclockerror in source selection
In the source selection algorithm, include extra dispersion due to
maxclockerror in the root distance of sources that don't have new
samples (the last sample is older than span of all samples) to not
prefer unreachable sources with a short distance and small skew over
reachable sources for too long, and also to decrease their chances of
becoming falsetickers.
commit da862158bf57a114314e96799dbe9816e854f871
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Feb 21 12:50:14 2018 +0100
main: open /dev/null as stdin/out/err in daemonization
chronyd doesn't normally write anything to stdout or stderr when running
as a daemon, but it is a good practice to replace them with descriptors
of /dev/null to prevent accidental writes to other files or sockets that
would otherwise take their place.
commit 7b98443a13dcd6dbb169c756e86c2b71c3ccf2d9
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Feb 21 12:40:53 2018 +0100
logging: don't write fatal messages to invalid descriptor
If opening the log file specified with the -l option failed (after
closing all descriptors), the error message is written to an invalid
descriptor as no log file or syslog is opened yet. Fix the code to track
when the output is usable.
commit 4da9f74d24573b56507ea7600c52acc0b0042415
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Wed Feb 21 11:10:26 2018 +0100
util: replace assert for missing MD5 with fatal log message
Apparently, on some systems the MD5 function is missing with the NSS
support (freebl3). Instead of failing an assertion, exit with a log
message.
commit e41042e258acf3b83fc843d8fed16342e6b29493
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Fri Feb 23 16:33:42 2018 +0100
test: update util unit test
commit 5581466c631b4db631bacf6938edf5d747e5fefe
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Tue Feb 20 17:35:16 2018 +0100
test: improve and extend ntp_core unit test
commit e79a6c21164c84d35b699349839a88a7ee13745b
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Fri Feb 23 12:30:20 2018 +0100
sourcestats: limit minimum value of std_dev
commit 666ece122e5c4b75ebc570ae45bccabe8a1c1d0b
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Fri Feb 23 14:17:07 2018 +0100
ntp: compare receive timestamp when checking for duplicate
Compare both receive and transmit timestamps in the NTP test number 1.
This prevents a client from dropping a valid response in the interleaved
mode if it follows a response in the basic mode and the server did not
have a kernel/hardware transmit timestamp, and the random bits of the
two timestamps happen to be the same (chance of 1 in 2^(32-precision)).
commit 2c7ab98370933f3b08daf946949f63bbb68b2f66
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Tue Feb 20 09:46:08 2018 +0100
ntp: don't send packets with RX/TX timestamp equal to another timestamp
Before sending a new packet, check if the receive/transmit timestamp
is not equal to the origin timestamp or the previous receive/transmit
timestamp in order to prevent the packet from being its own valid
response (in the symmetric mode) and invalidate responses to the
previous packet.
This improves protection against replay attacks in the symmetric mode.
commit f0f18a02a7d97a3cfb4cd9977f5ec12c6b1f1028
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date: Fri Feb 16 17:07:56 2018 +0100
ntp: separate timestamps for restarting symmetric protocol
Save the local receive and remote transmit timestamp needed for
(re)starting the symmetric protocol when no valid reply was received
separately from the timestamps that are used for synchronization of the
local clock.
This extends the interval in which the local NTP state is (partially)
protected against replay attacks in order to complete a measurement
in the interleaved symmetric mode from [last valid RX, next TX] to
[last TX, next TX], i.e. it should be the same as in the basic mode.
-----------------------------------------------------------------------
Summary of changes:
logging.c | 30 +++---
logging.h | 2 +-
main.c | 9 ++
ntp_core.c | 132 ++++++++++++++++++--------
sources.c | 10 ++
sourcestats.c | 5 +-
test/simulation/119-smoothtime | 6 +-
test/unit/ntp_core.c | 207 ++++++++++++++++++++++++++++++++++-------
test/unit/util.c | 5 +
util.c | 31 ++++--
util.h | 4 +
11 files changed, 343 insertions(+), 98 deletions(-)
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