From 927b1649448b812a7620ad013f4752d597b12407 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Tue, 5 Nov 2013 20:52:39 +0100
Subject: logind: add virtual object paths that always can be used to refer to
 the callers session, user, seat or machine object

This way clients can skip invoking GetSessionByPID() for their own PID
or a similar call to access these objects.
---
 src/login/logind-seat-dbus.c | 47 +++++++++++++++++++++++++++++++++-----------
 1 file changed, 36 insertions(+), 11 deletions(-)

(limited to 'src/login/logind-seat-dbus.c')

diff --git a/src/login/logind-seat-dbus.c b/src/login/logind-seat-dbus.c
index e9f8d2637e..c59dfd9338 100644
--- a/src/login/logind-seat-dbus.c
+++ b/src/login/logind-seat-dbus.c
@@ -254,10 +254,9 @@ const sd_bus_vtable seat_vtable[] = {
 };
 
 int seat_object_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
-        _cleanup_free_ char *e = NULL;
         Manager *m = userdata;
         Seat *seat;
-        const char *p;
+        int r;
 
         assert(bus);
         assert(path);
@@ -265,17 +264,43 @@ int seat_object_find(sd_bus *bus, const char *path, const char *interface, void
         assert(found);
         assert(m);
 
-        p = startswith(path, "/org/freedesktop/login1/seat/");
-        if (!p)
-                return 0;
+        if (streq(path, "/org/freedesktop/login1/seat/self")) {
+                sd_bus_message *message;
+                Session *session;
+                pid_t pid;
 
-        e = bus_path_unescape(p);
-        if (!e)
-                return -ENOMEM;
+                message = sd_bus_get_current(bus);
+                if (!message)
+                        return 0;
 
-        seat = hashmap_get(m->seats, e);
-        if (!seat)
-                return 0;
+                r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
+                if (r < 0)
+                        return 0;
+
+                r = manager_get_session_by_pid(m, pid, &session);
+                if (r <= 0)
+                        return 0;
+
+                if (!session->seat)
+                        return 0;
+
+                seat = session->seat;
+        } else {
+                _cleanup_free_ char *e = NULL;
+                const char *p;
+
+                p = startswith(path, "/org/freedesktop/login1/seat/");
+                if (!p)
+                        return 0;
+
+                e = bus_path_unescape(p);
+                if (!e)
+                        return -ENOMEM;
+
+                seat = hashmap_get(m->seats, e);
+                if (!seat)
+                        return 0;
+        }
 
         *found = seat;
         return 1;
-- 
cgit v1.2.3-54-g00ecf