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cmdmon: listen on Unix domain socket

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In addition to the IPv4/IPv6 command sockets, create also a Unix domain
socket to process cmdmon requests. For now, there is no difference for
authorized commands, packets from all sockets need to be authenticated.

The default path of the socket is /var/run/chrony/chronyd.sock. It can
be configured with the bindcmdaddress directive with an address starting
with /.
This commit is contained in:
Miroslav Lichvar
2015-07-28 15:29:30 +02:00
parent 46b7148f3b
commit 0bcd10560a
3 changed files with 87 additions and 28 deletions
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22
conf.c
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@@ -182,6 +182,9 @@ static IPAddr bind_acq_address4, bind_acq_address6;
the loopback address will be used */
static IPAddr bind_cmd_address4, bind_cmd_address6;
/* Path to the Unix domain command socket. */
static char *bind_cmd_path;
/* Filename to use for storing pid of running chronyd, to prevent multiple
* chronyds being started. */
static char *pidfile;
@@ -320,6 +323,7 @@ CNF_Initialise(int r)
dumpdir = Strdup(".");
logdir = Strdup(".");
bind_cmd_path = Strdup("/var/run/chrony/chronyd.sock");
pidfile = Strdup("/var/run/chronyd.pid");
rtc_device = Strdup("/dev/rtc");
user = Strdup(DEFAULT_USER);
@@ -349,6 +353,7 @@ CNF_Finalise(void)
Free(keys_file);
Free(leapsec_tz);
Free(logdir);
Free(bind_cmd_path);
Free(pidfile);
Free(rtc_device);
Free(rtc_file);
@@ -1113,7 +1118,14 @@ parse_bindcmdaddress(char *line)
IPAddr ip;
check_number_of_args(line, 1);
if (UTI_StringToIP(line, &ip)) {
/* Address starting with / is for the Unix domain socket */
if (line[0] == '/') {
parse_string(line, &bind_cmd_path);
/* / disables the socket */
if (!strcmp(bind_cmd_path, "/"))
bind_cmd_path[0] = '\0';
} else if (UTI_StringToIP(line, &ip)) {
if (ip.family == IPADDR_INET4)
bind_cmd_address4 = ip;
else if (ip.family == IPADDR_INET6)
@@ -1697,6 +1709,14 @@ CNF_GetBindAcquisitionAddress(int family, IPAddr *addr)
/* ================================================== */
char *
CNF_GetBindCommandPath(void)
{
return bind_cmd_path;
}
/* ================================================== */
void
CNF_GetBindCommandAddress(int family, IPAddr *addr)
{