chiark / gitweb /
tree-wide: remove Lennart's copyright lines
[elogind.git] / src / login / logind-session-dbus.c
index b3535e36dade62e4dd827a8ea0c2e66f31628721..8a95fc7c751a7b22547bfa4d3020b41c68ed4b46 100644 (file)
@@ -1,21 +1,4 @@
-/***
-  This file is part of systemd.
-
-  Copyright 2011 Lennart Poettering
-
-  systemd is free software; you can redistribute it and/or modify it
-  under the terms of the GNU Lesser General Public License as published by
-  the Free Software Foundation; either version 2.1 of the License, or
-  (at your option) any later version.
-
-  systemd is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public License
-  along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
 
 #include <errno.h>
 #include <string.h>
@@ -98,8 +81,10 @@ static int property_get_seat(
 
 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_type, session_type, SessionType);
 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_class, session_class, SessionClass);
+static BUS_DEFINE_PROPERTY_GET(property_get_active, "b", Session, session_is_active);
+static BUS_DEFINE_PROPERTY_GET2(property_get_state, "s", Session, session_get_state, session_state_to_string);
 
-static int property_get_active(
+static int property_get_idle_hint(
                 sd_bus *bus,
                 const char *path,
                 const char *interface,
@@ -114,10 +99,10 @@ static int property_get_active(
         assert(reply);
         assert(s);
 
-        return sd_bus_message_append(reply, "b", session_is_active(s));
+        return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0);
 }
 
-static int property_get_state(
+static int property_get_idle_since_hint(
                 sd_bus *bus,
                 const char *path,
                 const char *interface,
@@ -127,33 +112,24 @@ static int property_get_state(
                 sd_bus_error *error) {
 
         Session *s = userdata;
+        dual_timestamp t = DUAL_TIMESTAMP_NULL;
+        uint64_t u;
+        int r;
 
         assert(bus);
         assert(reply);
         assert(s);
 
-        return sd_bus_message_append(reply, "s", session_state_to_string(session_get_state(s)));
-}
-
-static int property_get_idle_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;
+        r = session_get_idle_hint(s, &t);
+        if (r < 0)
+                return r;
 
-        assert(bus);
-        assert(reply);
-        assert(s);
+        u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
 
-        return sd_bus_message_append(reply, "b", session_get_idle_hint(s, NULL) > 0);
+        return sd_bus_message_append(reply, "t", u);
 }
 
-static int property_get_idle_since_hint(
+static int property_get_locked_hint(
                 sd_bus *bus,
                 const char *path,
                 const char *interface,
@@ -163,21 +139,12 @@ static int property_get_idle_since_hint(
                 sd_bus_error *error) {
 
         Session *s = userdata;
-        dual_timestamp t = DUAL_TIMESTAMP_NULL;
-        uint64_t u;
-        int r;
 
         assert(bus);
         assert(reply);
         assert(s);
 
-        r = session_get_idle_hint(s, &t);
-        if (r < 0)
-                return r;
-
-        u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
-
-        return sd_bus_message_append(reply, "t", u);
+        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) {
@@ -279,6 +246,35 @@ 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;
@@ -349,7 +345,7 @@ static int method_take_control(sd_bus_message *message, void *userdata, sd_bus_e
         if (uid != 0 && (force || uid != s->user->uid))
                 return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED, "Only owner of session may take control");
 
-        r = session_set_controller(s, sd_bus_message_get_sender(message), force);
+        r = session_set_controller(s, sd_bus_message_get_sender(message), force, true);
         if (r < 0)
                 return r;
 
@@ -397,14 +393,23 @@ static int method_take_device(sd_bus_message *message, void *userdata, sd_bus_er
                  * equivalent). */
                 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_IS_TAKEN, "Device already taken");
 
-        r = session_device_new(s, dev, &sd);
+        r = session_device_new(s, dev, true, &sd);
         if (r < 0)
                 return r;
 
+        r = session_device_save(sd);
+        if (r < 0)
+                goto error;
+
         r = sd_bus_reply_method_return(message, "hb", sd->fd, !sd->active);
         if (r < 0)
-                session_device_free(sd);
+                goto error;
 
+        session_save(s);
+        return 1;
+
+error:
+        session_device_free(sd);
         return r;
 }
 
@@ -431,6 +436,8 @@ static int method_release_device(sd_bus_message *message, void *userdata, sd_bus
                 return sd_bus_error_setf(error, BUS_ERROR_DEVICE_NOT_TAKEN, "Device not taken");
 
         session_device_free(sd);
+        session_save(s);
+
         return sd_bus_reply_method_return(message, NULL);
 }
 
@@ -487,12 +494,14 @@ 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),
@@ -520,23 +529,15 @@ int session_object_find(sd_bus *bus, const char *path, const char *interface, vo
         assert(m);
 
         if (streq(path, "/org/freedesktop/login1/session/self")) {
-                _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
                 sd_bus_message *message;
-                const char *name;
 
                 message = sd_bus_get_current_message(bus);
                 if (!message)
                         return 0;
 
-                r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
-                if (r < 0)
-                        return r;
-
-                r = sd_bus_creds_get_session(creds, &name);
+                r = manager_get_session_from_creds(m, message, NULL, error, &session);
                 if (r < 0)
                         return r;
-
-                session = hashmap_get(m->sessions, name);
         } else {
                 _cleanup_free_ char *e = NULL;
                 const char *p;
@@ -550,11 +551,10 @@ int session_object_find(sd_bus *bus, const char *path, const char *interface, vo
                         return -ENOMEM;
 
                 session = hashmap_get(m->sessions, e);
+                if (!session)
+                        return 0;
         }
 
-        if (!session)
-                return 0;
-
         *found = session;
         return 1;
 }
@@ -614,8 +614,7 @@ int session_node_enumerator(sd_bus *bus, const char *path, void *userdata, char
                 }
         }
 
-        *nodes = l;
-        l = NULL;
+        *nodes = TAKE_PTR(l);
 
         return 1;
 }
@@ -719,11 +718,13 @@ int session_send_create_reply(Session *s, sd_bus_error *error) {
         if (fifo_fd < 0)
                 return fifo_fd;
 
-        /* Update the session and user state files before we notify
-         * the client about the result. */
+        /* Update the session state file before we notify the client
+         * about the result. */
         session_save(s);
-        user_save(s->user);
 
+#if 1 /// Additionally elogind saves the user state file
+        user_save(s->user);
+#endif // 1
         p = session_bus_path(s);
         if (!p)
                 return -ENOMEM;