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-rw-r--r--src/hostname/hostnamed.c6
-rw-r--r--src/locale/localed.c6
-rw-r--r--src/login/logind-dbus.c113
-rw-r--r--src/login/org.freedesktop.login1.conf8
-rw-r--r--src/polkit.c19
-rw-r--r--src/polkit.h1
-rw-r--r--src/timedate/timedated.c8
7 files changed, 125 insertions, 36 deletions
diff --git a/src/hostname/hostnamed.c b/src/hostname/hostnamed.c
index 1340c29dd5..ad72440845 100644
--- a/src/hostname/hostnamed.c
+++ b/src/hostname/hostnamed.c
@@ -332,7 +332,7 @@ static DBusHandlerResult hostname_message_handler(
if (!streq_ptr(name, data[PROP_HOSTNAME])) {
char *h;
- r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-hostname", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-hostname", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -376,7 +376,7 @@ static DBusHandlerResult hostname_message_handler(
if (!streq_ptr(name, data[PROP_STATIC_HOSTNAME])) {
- r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-static-hostname", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.hostname1.set-static-hostname", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -441,7 +441,7 @@ static DBusHandlerResult hostname_message_handler(
r = verify_polkit(connection, message, k == PROP_PRETTY_HOSTNAME ?
"org.freedesktop.hostname1.set-static-hostname" :
- "org.freedesktop.hostname1.set-machine-info", interactive, &error);
+ "org.freedesktop.hostname1.set-machine-info", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
diff --git a/src/locale/localed.c b/src/locale/localed.c
index d46d91e032..e9f9f86878 100644
--- a/src/locale/localed.c
+++ b/src/locale/localed.c
@@ -1100,7 +1100,7 @@ static DBusHandlerResult locale_message_handler(
if (modified) {
- r = verify_polkit(connection, message, "org.freedesktop.locale1.set-locale", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.locale1.set-locale", interactive, NULL, &error);
if (r < 0) {
strv_free(l);
return bus_send_error_reply(connection, message, &error, r);
@@ -1181,7 +1181,7 @@ static DBusHandlerResult locale_message_handler(
if (!streq_ptr(keymap, state.vc_keymap) ||
!streq_ptr(keymap_toggle, state.vc_keymap_toggle)) {
- r = verify_polkit(connection, message, "org.freedesktop.locale1.set-keyboard", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.locale1.set-keyboard", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -1251,7 +1251,7 @@ static DBusHandlerResult locale_message_handler(
!streq_ptr(variant, state.x11_variant) ||
!streq_ptr(options, state.x11_options)) {
- r = verify_polkit(connection, message, "org.freedesktop.locale1.set-keyboard", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.locale1.set-keyboard", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
diff --git a/src/login/logind-dbus.c b/src/login/logind-dbus.c
index a50db630a0..7794ab917e 100644
--- a/src/login/logind-dbus.c
+++ b/src/login/logind-dbus.c
@@ -129,6 +129,12 @@
" <method name=\"Reboot\">\n" \
" <arg name=\"interactive\" type=\"b\" direction=\"in\"/>\n" \
" </method>\n" \
+ " <method name=\"CanPowerOff\">\n" \
+ " <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
+ " </method>\n" \
+ " <method name=\"CanReboot\">\n" \
+ " <arg name=\"result\" type=\"s\" direction=\"out\"/>\n" \
+ " </method>\n" \
" <signal name=\"SessionNew\">\n" \
" <arg name=\"id\" type=\"s\"/>\n" \
" <arg name=\"path\" type=\"o\"/>\n" \
@@ -714,6 +720,37 @@ static int flush_devices(Manager *m) {
return trigger_device(m, NULL);
}
+static int have_multiple_sessions(
+ DBusConnection *connection,
+ Manager *m,
+ DBusMessage *message,
+ DBusError *error) {
+
+ Session *s;
+
+ assert(m);
+
+ if (hashmap_size(m->sessions) > 1)
+ return true;
+
+ /* Hmm, there's only one session, but let's make sure it
+ * actually belongs to the user who is asking. If not, better
+ * be safe than sorry. */
+
+ s = hashmap_first(m->sessions);
+ if (s) {
+ unsigned long ul;
+
+ ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), error);
+ if (ul == (unsigned long) -1)
+ return -EIO;
+
+ return s->user->uid != ul;
+ }
+
+ return false;
+}
+
static const BusProperty bus_login_manager_properties[] = {
{ "ControlGroupHierarchy", bus_property_append_string, "s", offsetof(Manager, cgroup_path), true },
{ "Controllers", bus_property_append_strv, "as", offsetof(Manager, controllers), true },
@@ -1261,7 +1298,7 @@ static DBusHandlerResult manager_message_handler(
if (!pw)
return bus_send_error_reply(connection, message, NULL, errno ? -errno : -EINVAL);
- r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.login1.set-user-linger", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -1321,7 +1358,7 @@ static DBusHandlerResult manager_message_handler(
if (!path_startswith(sysfs, "/sys") || !seat_name_is_valid(seat))
return bus_send_error_reply(connection, message, NULL, -EINVAL);
- r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.login1.attach-device", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -1344,7 +1381,7 @@ static DBusHandlerResult manager_message_handler(
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
- r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.login1.flush-devices", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -1372,27 +1409,11 @@ static DBusHandlerResult manager_message_handler(
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
- multiple_sessions = hashmap_size(m->sessions) > 1;
-
- if (!multiple_sessions) {
- Session *s;
-
- /* Hmm, there's only one session, but let's
- * make sure it actually belongs to the user
- * who is asking. If not, better be safe than
- * sorry. */
-
- s = hashmap_first(m->sessions);
- if (s) {
- unsigned long ul;
-
- ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error);
- if (ul == (unsigned long) -1)
- return bus_send_error_reply(connection, message, &error, -EIO);
+ r = have_multiple_sessions(connection, m, message, &error);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, &error, r);
- multiple_sessions = s->user->uid != ul;
- }
- }
+ multiple_sessions = r > 0;
if (streq(dbus_message_get_member(message), "PowerOff")) {
if (multiple_sessions)
@@ -1410,7 +1431,7 @@ static DBusHandlerResult manager_message_handler(
name = SPECIAL_REBOOT_TARGET;
}
- r = verify_polkit(connection, message, action, interactive, &error);
+ r = verify_polkit(connection, message, action, interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -1442,6 +1463,50 @@ static DBusHandlerResult manager_message_handler(
if (!reply)
goto oom;
+ } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanPowerOff") ||
+ dbus_message_is_method_call(message, "org.freedesktop.login1.Manager", "CanReboot")) {
+
+ bool multiple_sessions, challenge, b;
+ const char *t, *action;
+
+ r = have_multiple_sessions(connection, m, message, &error);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, &error, r);
+
+ multiple_sessions = r > 0;
+
+ if (streq(dbus_message_get_member(message), "CanPowerOff")) {
+ if (multiple_sessions)
+ action = "org.freedesktop.login1.power-off-multiple-sessions";
+ else
+ action = "org.freedesktop.login1.power-off";
+
+ } else {
+ if (multiple_sessions)
+ action = "org.freedesktop.login1.reboot-multiple-sessions";
+ else
+ action = "org.freedesktop.login1.reboot";
+ }
+
+ r = verify_polkit(connection, message, action, false, &challenge, &error);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, &error, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ t = r > 0 ? "yes" :
+ challenge ? "challenge" :
+ "no";
+
+ b = dbus_message_append_args(
+ reply,
+ DBUS_TYPE_STRING, &t,
+ DBUS_TYPE_INVALID);
+ if (!b)
+ goto oom;
+
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;
diff --git a/src/login/org.freedesktop.login1.conf b/src/login/org.freedesktop.login1.conf
index 5ae143694d..9ef852bb73 100644
--- a/src/login/org.freedesktop.login1.conf
+++ b/src/login/org.freedesktop.login1.conf
@@ -86,6 +86,14 @@
<allow send_destination="org.freedesktop.login1"
send_interface="org.freedesktop.login1.Manager"
+ send_member="CanPowerOff"/>
+
+ <allow send_destination="org.freedesktop.login1"
+ send_interface="org.freedesktop.login1.Manager"
+ send_member="CanReboot"/>
+
+ <allow send_destination="org.freedesktop.login1"
+ send_interface="org.freedesktop.login1.Manager"
send_member="AttachDevice"/>
<allow send_destination="org.freedesktop.login1"
diff --git a/src/polkit.c b/src/polkit.c
index 5b67480fe5..3acbdc6135 100644
--- a/src/polkit.c
+++ b/src/polkit.c
@@ -82,6 +82,7 @@ int verify_polkit(
DBusMessage *request,
const char *action,
bool interactive,
+ bool *_challenge,
DBusError *error) {
DBusMessage *m = NULL, *reply = NULL;
@@ -94,7 +95,7 @@ int verify_polkit(
uint64_t starttime_u64;
DBusMessageIter iter_msg, iter_struct, iter_array, iter_dict, iter_variant;
int r;
- dbus_bool_t authorized = FALSE;
+ dbus_bool_t authorized = FALSE, challenge = FALSE;
assert(c);
assert(request);
@@ -176,7 +177,21 @@ int verify_polkit(
dbus_message_iter_get_basic(&iter_struct, &authorized);
- r = authorized ? 0 : -EPERM;
+ if (!dbus_message_iter_next(&iter_struct) ||
+ dbus_message_iter_get_arg_type(&iter_struct) != DBUS_TYPE_BOOLEAN) {
+ r = -EIO;
+ goto finish;
+ }
+
+ dbus_message_iter_get_basic(&iter_struct, &challenge);
+
+ if (authorized)
+ r = 1;
+ else if (_challenge) {
+ *_challenge = !!challenge;
+ r = 0;
+ } else
+ r = -EPERM;
finish:
diff --git a/src/polkit.h b/src/polkit.h
index fc4e77118f..0d08194b26 100644
--- a/src/polkit.h
+++ b/src/polkit.h
@@ -30,6 +30,7 @@ int verify_polkit(
DBusMessage *request,
const char *action,
bool interactive,
+ bool *challenge,
DBusError *error);
#endif
diff --git a/src/timedate/timedated.c b/src/timedate/timedated.c
index 97306e9a32..792c61a7d7 100644
--- a/src/timedate/timedated.c
+++ b/src/timedate/timedated.c
@@ -553,7 +553,7 @@ static DBusHandlerResult timedate_message_handler(
if (!streq_ptr(z, tz.zone)) {
char *t;
- r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-timezone", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-timezone", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -611,7 +611,7 @@ static DBusHandlerResult timedate_message_handler(
if (lrtc != tz.local_rtc) {
struct timespec ts;
- r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-local-rtc", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-local-rtc", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -702,7 +702,7 @@ static DBusHandlerResult timedate_message_handler(
struct timespec ts;
struct tm* tm;
- r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-time", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-time", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
@@ -741,7 +741,7 @@ static DBusHandlerResult timedate_message_handler(
if (ntp != !!tz.use_ntp) {
- r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-ntp", interactive, &error);
+ r = verify_polkit(connection, message, "org.freedesktop.timedate1.set-ntp", interactive, NULL, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-08 06:37:53 +0000