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timedate: make NTP controllable too

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This commit is contained in:
Lennart Poettering 2011-08-22 01:08:10 +02:00
parent e27796a030
commit c5f0532ff1
2 changed files with 269 additions and 1 deletions
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11
src/org.freedesktop.timedate1.policy.in
View File

@ -47,4 +47,15 @@
</defaults>
</action>
<action id="org.freedesktop.timedate1.set-ntp">
<_description>Turn network time synchronization on or off</_description>
<_message>Authentication is required to control whether
network time synchronization shall be enabled.</_message>
<defaults>
<allow_any>auth_admin_keep</allow_any>
<allow_inactive>auth_admin_keep</allow_inactive>
<allow_active>auth_admin_keep</allow_active>
</defaults>
</action>
</policyconfig>

259
src/timedated.c
View File

@ -37,6 +37,7 @@
" <interface name=\"org.freedesktop.timedate1\">\n" \
" <property name=\"Timezone\" type=\"s\" access=\"read\"/>\n" \
" <property name=\"LocalRTC\" type=\"b\" access=\"read\"/>\n" \
" <property name=\"NTP\" type=\"b\" access=\"read\"/>\n" \
" <method name=\"SetTime\">\n" \
" <arg name=\"usec_utc\" type=\"x\" direction=\"in\"/>\n" \
" <arg name=\"relative\" type=\"b\" direction=\"in\"/>\n" \
@ -51,6 +52,10 @@
" <arg name=\"fix_system\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"SetNTP\">\n" \
" <arg name=\"use_ntp\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"user_interaction\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
" </interface>\n"
#define INTROSPECTION \
@ -70,6 +75,7 @@ const char timedate_interface[] _introspect_("timedate1") = INTERFACE;
static char *zone = NULL;
static bool local_rtc = false;
static int use_ntp = -1;
static void free_data(void) {
free(zone);
@ -271,6 +277,213 @@ static int write_data_local_rtc(void) {
return r;
}
static int read_ntp(DBusConnection *bus) {
DBusMessage *m = NULL, *reply = NULL;
const char *name = "ntpd.service", *s;
DBusError error;
int r;
assert(bus);
dbus_error_init(&error);
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnitFileState");
if (!m) {
log_error("Out of memory");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_STRING, &s,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
goto finish;
}
use_ntp =
streq(s, "enabled") ||
streq(s, "enabled-runtime");
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int start_ntp(DBusConnection *bus, DBusError *error) {
DBusMessage *m = NULL, *reply = NULL;
const char *name = "ntpd.service", *mode = "replace";
int r;
assert(bus);
assert(error);
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
use_ntp ? "StartUnit" : "StopUnit");
if (!m) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
if (!dbus_message_append_args(m,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_STRING, &mode,
DBUS_TYPE_INVALID)) {
log_error("Could not append arguments to message.");
r = -ENOMEM;
goto finish;
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(error));
r = -EIO;
goto finish;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
return r;
}
static int enable_ntp(DBusConnection *bus, DBusError *error) {
DBusMessage *m = NULL, *reply = NULL;
const char * const names[] = { "ntpd.service", NULL };
int r;
DBusMessageIter iter;
dbus_bool_t f = FALSE, t = TRUE;
assert(bus);
assert(error);
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
use_ntp ? "EnableUnitFiles" : "DisableUnitFiles");
if (!m) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
dbus_message_iter_init_append(m, &iter);
r = bus_append_strv_iter(&iter, (char**) names);
if (r < 0) {
log_error("Failed to append unit files.");
goto finish;
}
/* send runtime bool */
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &f)) {
log_error("Failed to append runtime boolean.");
r = -ENOMEM;
goto finish;
}
if (use_ntp) {
/* send force bool */
if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &t)) {
log_error("Failed to append force boolean.");
r = -ENOMEM;
goto finish;
}
}
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(error));
r = -EIO;
goto finish;
}
dbus_message_unref(m);
m = dbus_message_new_method_call(
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"Reload");
if (!m) {
log_error("Could not allocate message.");
r = -ENOMEM;
goto finish;
}
dbus_message_unref(reply);
reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error);
if (!reply) {
log_error("Failed to issue method call: %s", bus_error_message(error));
r = -EIO;
goto finish;
}
r = 0;
finish:
if (m)
dbus_message_unref(m);
if (reply)
dbus_message_unref(reply);
return r;
}
static int property_append_ntp(DBusMessageIter *i, const char *property, void *data) {
dbus_bool_t db;
assert(i);
assert(property);
db = use_ntp > 0;
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &db))
return -ENOMEM;
return 0;
}
static DBusHandlerResult timedate_message_handler(
DBusConnection *connection,
DBusMessage *message,
@ -279,6 +492,7 @@ static DBusHandlerResult timedate_message_handler(
const BusProperty properties[] = {
{ "org.freedesktop.timedate1", "Timezone", bus_property_append_string, "s", zone },
{ "org.freedesktop.timedate1", "LocalRTC", bus_property_append_bool, "b", &local_rtc },
{ "org.freedesktop.timedate1", "NTP", property_append_ntp, "b", NULL },
{ NULL, NULL, NULL, NULL, NULL }
};
@ -427,7 +641,7 @@ static DBusHandlerResult timedate_message_handler(
hwclock_set_time(tm);
}
log_error("RTC configured to %s time.", local_rtc ? "local" : "UTC");
log_info("RTC configured to %s time.", local_rtc ? "local" : "UTC");
changed = bus_properties_changed_new(
"/org/freedesktop/timedate1",
@ -483,6 +697,43 @@ static DBusHandlerResult timedate_message_handler(
log_info("Changed local time to %s", ctime(&ts.tv_sec));
}
} else if (dbus_message_is_method_call(message, "org.freedesktop.timedate1", "SetNTP")) {
dbus_bool_t ntp;
dbus_bool_t interactive;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_BOOLEAN, &ntp,
DBUS_TYPE_BOOLEAN, &interactive,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
if (ntp != !!use_ntp) {
r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-ntp", interactive, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
use_ntp = !!ntp;
r = enable_ntp(connection, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
r = start_ntp(connection, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
log_info("Set NTP to %s", use_ntp ? "enabled" : "disabled");
changed = bus_properties_changed_new(
"/org/freedesktop/timedate1",
"org.freedesktop.timedate1",
"NTP\0");
if (!changed)
goto oom;
}
} else
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
@ -604,6 +855,12 @@ int main(int argc, char *argv[]) {
if (r < 0)
goto finish;
r = read_ntp(bus);
if (r < 0) {
log_error("Failed to determine whether NTP is enabled: %s", strerror(-r));
goto finish;
}
while (dbus_connection_read_write_dispatch(bus, -1))
;