Allow an IP family to be specified in the socket initialization in order
to globally disable the other family. This replaces the ntp_io and
cmdmon code handling the -4/-6 options and fixes a case where the NTP
client could still use a disabled family if the source was specified
with an IP address.
The selection options returned as flags are not reported by the
client and will be better reported in a separate command with other
selection-specific data.
Refactor the client record and clientlog API to reuse more code between
different services and enumerate the services instead of hardcoding NTP
and cmdmon.
Add a new field to the CLIENT_ACCESSES_BY_INDEX request to specify the
minimum number of NTP or cmdmon packets for a client to be reported.
Add -p option to the chronyc clients command to specify the threshold
(by default 0). This option can be used to minimize the number of cmdmon
requests when interested only in clients sending a large number
of requests.
Add a flag to the CLIENT_ACCESSES_BY_INDEX request to reset the
NTP/cmdmon hits/dropped counters after reporting the current values.
Add -r option to the chronyc clients command to perform the reset. This
should make it easier to find clients that send large number of requests
over short periods of time.
Don't require the caller to provide a SCK_Message (on stack). Modify the
SCK_ReceiveMessage*() functions to return a pointer to static buffers,
as the message buffer which SCK_Message points to already is.
The reset command drops all measurements and switches the reference to
the unsynchronised state. This command can help chronyd with recovery
when the measurements are known to be no longer valid or accurate, e.g.
due to moving the computer to a different network, or resuming the
computer from a low-power state (which resets the system clock).
Allow the nts and ntsport options to be specified for sources added from
chronyc. This is an incompatible change in the request, but there was no
release using the new REQ_ADD_SOURCE command yet.
Add an option to enable NTS for an NTP source. Check for NTS-specific
extension fields and pass the packets to the NTS-NTP code in order to
enable the NTS client and server.
Specify a new request to get the name of the NTP source corresponding to
an address, which was originally specified in the configuration file or
chronyc add command.
Modify the request for adding a source to provide the name of the source
instead of its address (resolved in chronyc) in order to enable chronyd
to replace the source, support an "add pool" command, and enable an NTS
client to verify the server's certificate.
The name resolving does not block the response. Success is indicated
even if the name cannot be resolved, or a source with the same address
is already present.
To prevent unresolvable names from getting to chronyd, chronyc does not
send the request if it could not resolve the name itself (assuming they
are both running on the same host using the same resolver).
Return an error status when the name is not printable or contains a
space (don't bother with full hostname validation). If the name is an
address, return the same status as NSR_AddSource(). Otherwise, return a
"not resolved yet" status.
Don't abort on start when no UDP socket could be opened/bound for
cmdmon. The Unix socket is more important and with the IP_FREEBIND
option this case was not caught anyway.
Add an option to use the median filter to reduce noise in measurements
before they are accumulated to sourcestats, similarly to reference
clocks. The option specifies how many samples are reduced to a single
sample.
The filter is intended to be used with very short polling intervals in
local networks where it is acceptable to generate a lot of NTP traffic.
The onoffline command tells chronyd to switch all sources to the online
or offline status according to the current network configuration. A
source is considered online if it is possible to send requests to it,
i.e. a route to the network is present.
Instead of zeroing individual fields, zero all bytes of the buffer
before the reply is formed.
This may have a small impact on performance, but it simplifies the code
and minimizes the risk of leaking uninitialized memory.
Make the length of responses containing manual samples constant to
simplify the protocol. It was the only type of response that had a
variable length.
This reverts commit 2343e7a89c.
When the burst option is specified in the server/pool directive and the
current poll is longer than the minimum poll, initiate on each poll a
burst with 1 good sample and 2 or 4 total samples according to the
difference between the current and minimum poll.
Before reading the n_samples field of the MANUAL_LIST reply, check if it
is actually contained in the received message. This does not change the
outcome of the client's length check as the returned length was always
larger than the length of the truncated reply and it was dropped anyway,
but it prevents the client from reading uninitialized memory.
It was never used for anything and messages in debug output already
include filenames, which can be easily grepped if there is a need
to see log messages only from a particular file.
Add xleave option to the peer directive to enable an interleaved mode
compatible with ntpd. This allows peers to exchange transmit timestamps
captured after the actual transmission and significantly improve
the accuracy of the measurements.
Replace struct timeval with struct timespec as the main data type for
timestamps. This will allow the NTP code to work with timestamps in
nanosecond resolution.
Replace SCH_*InputFileHandler() functions with more general
SCH_*FileHandler(), where events are specified as a new parameter and
which will later support other file events, e.g. file ready for ouput
and exception.
The file handlers have two new parameters: file descriptor and event.
