faraphel/chrony
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client: add sourcename command

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Add a new command to print the original name of a source specified by
address. This could be useful in scripts to avoid having to run the
sources command with and without -N.
This commit is contained in:
Miroslav Lichvar 2019-12-05 13:25:10 +01:00
parent 50e5865c73
commit bfcd8ecc56
2 changed files with 34 additions and 0 deletions
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25
client.c
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@ -1213,6 +1213,7 @@ give_help(void)
"\0according to network configuration\0"
"polltarget <address> <target>\0Modify poll target\0"
"refresh\0Refresh IP addresses\0"
"sourcename <address>\0Display original name\0"
"\0\0"
"Manual time input:\0\0"
"manual off|on|reset\0Disable/enable/reset settime command\0"
@ -2081,6 +2082,27 @@ check_for_verbose_flag(char *line)
/* ================================================== */
static int
process_cmd_sourcename(char *line)
{
IPAddr ip_addr;
char name[256];
if (!UTI_StringToIP(line, &ip_addr)) {
LOG(LOGS_ERR, "Could not read address");
return 0;
}
if (!get_source_name(&ip_addr, name, sizeof (name)))
return 0;
print_report("%s\n", name, REPORT_END);
return 1;
}
/* ================================================== */
static int
process_cmd_sources(char *line)
{
@ -3093,6 +3115,9 @@ process_line(char *line)
ret = process_cmd_smoothing(line);
} else if (!strcmp(command, "smoothtime")) {
do_normal_submit = process_cmd_smoothtime(&tx_message, line);
} else if (!strcmp(command, "sourcename")) {
do_normal_submit = 0;
ret = process_cmd_sourcename(line);
} else if (!strcmp(command, "sources")) {
do_normal_submit = 0;
ret = process_cmd_sources(line);

9
doc/chronyc.adoc
View file

@ -761,6 +761,15 @@ Sources that stop responding will be replaced with newly resolved addresses
automatically after 8 polling intervals, but this command can still be useful
to replace them immediately and not wait until they are marked as unreachable.
[[sourcename]]*sourcename* _address_::
The *sourcename* command prints the original hostname or address that was
specified for an NTP source in the configuration file, or the *add* command.
This command is an alternative to the *-N* option, which can be useful in
scripts.
+
Note that different NTP sources can share the same name, e.g. servers from a
pool.
=== Manual time input
[[manual]]