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authorVictor Toso <me@victortoso.com>2016-05-11 19:34:13 +0200
committerLennart Poettering <lennart@poettering.net>2016-05-11 19:34:13 +0200
commit42d35e1301928d08dd32ec51f0205252ae658ba5 (patch)
treeba8c22bfa08f0899c58e0f6de90b0858c0b5a8ef
parentfe1ef0f86e49c50cf71579d98679973a6d671323 (diff)
logind: introduce LockedHint and SetLockedHint (#3238)
Desktop environments can keep this property up to date to allow applications to easily track session's Lock status.
-rw-r--r--src/login/logind-session-dbus.c49
-rw-r--r--src/login/logind-session.c17
-rw-r--r--src/login/logind-session.h4
-rw-r--r--src/login/org.freedesktop.login1.conf4
4 files changed, 74 insertions, 0 deletions
diff --git a/src/login/logind-session-dbus.c b/src/login/logind-session-dbus.c
index 0f8862c0d9..22dea5db1f 100644
--- a/src/login/logind-session-dbus.c
+++ b/src/login/logind-session-dbus.c
@@ -180,6 +180,24 @@ static int property_get_idle_since_hint(
return sd_bus_message_append(reply, "t", u);
}
+static int property_get_locked_hint(
+ sd_bus *bus,
+ const char *path,
+ const char *interface,
+ const char *property,
+ sd_bus_message *reply,
+ void *userdata,
+ sd_bus_error *error) {
+
+ Session *s = userdata;
+
+ assert(bus);
+ assert(reply);
+ assert(s);
+
+ return sd_bus_message_append(reply, "b", session_get_locked_hint(s) > 0);
+}
+
int bus_session_method_terminate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = userdata;
int r;
@@ -279,6 +297,35 @@ static int method_set_idle_hint(sd_bus_message *message, void *userdata, sd_bus_
return sd_bus_reply_method_return(message, NULL);
}
+static int method_set_locked_hint(sd_bus_message *message, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
+ Session *s = userdata;
+ uid_t uid;
+ int r, b;
+
+ assert(message);
+ assert(s);
+
+ r = sd_bus_message_read(message, "b", &b);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_creds_get_euid(creds, &uid);
+ if (r < 0)
+ return r;
+
+ if (uid != 0 && uid != s->user->uid)
+ return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may set locked hint");
+
+ session_set_locked_hint(s, b);
+
+ return sd_bus_reply_method_return(message, NULL);
+}
+
int bus_session_method_kill(sd_bus_message *message, void *userdata, sd_bus_error *error) {
Session *s = userdata;
const char *swho;
@@ -487,12 +534,14 @@ const sd_bus_vtable session_vtable[] = {
SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
+ SD_BUS_PROPERTY("LockedHint", "b", property_get_locked_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
SD_BUS_METHOD("Terminate", NULL, NULL, bus_session_method_terminate, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Activate", NULL, NULL, bus_session_method_activate, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Lock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Unlock", NULL, NULL, bus_session_method_lock, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("SetIdleHint", "b", NULL, method_set_idle_hint, SD_BUS_VTABLE_UNPRIVILEGED),
+ SD_BUS_METHOD("SetLockedHint", "b", NULL, method_set_locked_hint, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("Kill", "si", NULL, bus_session_method_kill, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("TakeControl", "b", NULL, method_take_control, SD_BUS_VTABLE_UNPRIVILEGED),
SD_BUS_METHOD("ReleaseControl", NULL, NULL, method_release_control, SD_BUS_VTABLE_UNPRIVILEGED),
diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index d2f1f7bc62..1e0666884a 100644
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -852,6 +852,23 @@ void session_set_idle_hint(Session *s, bool b) {
manager_send_changed(s->manager, "IdleHint", "IdleSinceHint", "IdleSinceHintMonotonic", NULL);
}
+int session_get_locked_hint(Session *s) {
+ assert(s);
+
+ return s->locked_hint;
+}
+
+void session_set_locked_hint(Session *s, bool b) {
+ assert(s);
+
+ if (s->locked_hint == b)
+ return;
+
+ s->locked_hint = b;
+
+ session_send_changed(s, "LockedHint", NULL);
+}
+
static int session_dispatch_fifo(sd_event_source *es, int fd, uint32_t revents, void *userdata) {
Session *s = userdata;
diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index e24b808474..ffb7cd2d41 100644
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -105,6 +105,8 @@ struct Session {
bool idle_hint;
dual_timestamp idle_hint_timestamp;
+ bool locked_hint;
+
bool in_gc_queue:1;
bool started:1;
bool stopping:1;
@@ -132,6 +134,8 @@ int session_activate(Session *s);
bool session_is_active(Session *s);
int session_get_idle_hint(Session *s, dual_timestamp *t);
void session_set_idle_hint(Session *s, bool b);
+int session_get_locked_hint(Session *s);
+void session_set_locked_hint(Session *s, bool b);
int session_create_fifo(Session *s);
int session_start(Session *s);
int session_stop(Session *s, bool force);
diff --git a/src/login/org.freedesktop.login1.conf b/src/login/org.freedesktop.login1.conf
index 1662d4c428..c89e40457e 100644
--- a/src/login/org.freedesktop.login1.conf
+++ b/src/login/org.freedesktop.login1.conf
@@ -234,6 +234,10 @@
<allow send_destination="org.freedesktop.login1"
send_interface="org.freedesktop.login1.Session"
+ send_member="SetLockedHint"/>
+
+ <allow send_destination="org.freedesktop.login1"
+ send_interface="org.freedesktop.login1.Session"
send_member="Kill"/>
<allow send_destination="org.freedesktop.login1"