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From cac2c0ad8f4f40b6b175b9fbcde06935859f1bbc Mon Sep 17 00:00:00 2001
From: Peter de Ridder <peter@xfce.org>
Date: Wed, 20 Mar 2013 20:44:51 +0100
Subject: [PATCH] Use the session path instead of the session id.

---
 src/gs-listener-dbus.c | 47 +++++++++++++++++++++++++++--------------------
 1 file changed, 27 insertions(+), 20 deletions(-)

diff --git a/src/gs-listener-dbus.c b/src/gs-listener-dbus.c
index 703d9e1..11fb95e 100644
--- a/src/gs-listener-dbus.c
+++ b/src/gs-listener-dbus.c
@@ -25,6 +25,7 @@
 #include <stdio.h>
 #include <time.h>
 #include <string.h>
+#include <unistd.h>
 
 #include <glib/gi18n.h>
 
@@ -116,19 +117,8 @@ enum {
         if (listener->priv->session_id == NULL)
                 return FALSE;
 
-#ifdef WITH_SYSTEMD
-        /* The bus object path is simply the actual session ID
-         * prefixed to make it a bus path */
-        if (listener->priv->have_systemd)
-                return g_str_has_prefix (ssid, SYSTEMD_LOGIND_SESSION_PATH "/")
-                        && strcmp (ssid + sizeof (SYSTEMD_LOGIND_SESSION_PATH),
-                                   listener->priv->session_id) == 0;
-#endif
-
-#ifdef WITH_CONSOLE_KIT
         if (strcmp (ssid, listener->priv->session_id) == 0)
                 return TRUE;
-#endif
 
         return FALSE;
 }
@@ -416,20 +406,37 @@ enum {
 
 #ifdef WITH_SYSTEMD
         if (listener->priv->have_systemd) {
-                char *t;
-                int r;
+                dbus_uint32_t pid = getpid();
 
-                r = sd_pid_get_session (0, &t);
-                if (r < 0) {
-                        gs_debug ("Couldn't determine our own session id: %s", strerror (-r));
+                message = dbus_message_new_method_call (SYSTEMD_LOGIND_SERVICE, SYSTEMD_LOGIND_PATH, SYSTEMD_LOGIND_INTERFACE, "GetSessionByPID");
+                if (message == NULL) {
+                        gs_debug ("Couldn't allocate the dbus message");
                         return NULL;
                 }
 
-                /* t is allocated with malloc(), we need it with g_malloc() */
-                ssid = g_strdup(t);
-                free (t);
+                if (dbus_message_append_args (message, DBUS_TYPE_UINT32, &pid, DBUS_TYPE_INVALID) == FALSE) {
+                        gs_debug ("Couldn't add args to the dbus message");
+                        return NULL;
+                }
+
+                /* FIXME: use async? */
+                reply = dbus_connection_send_with_reply_and_block (listener->priv->system_connection,
+                                                                   message,
+                                                                   -1, &error);
+                dbus_message_unref (message);
+
+                if (dbus_error_is_set (&error)) {
+                        gs_debug ("%s raised:\n %s\n\n", error.name, error.message);
+                        dbus_error_free (&error);
+                        return NULL;
+                }
+
+                dbus_message_iter_init (reply, &reply_iter);
+                dbus_message_iter_get_basic (&reply_iter, &ssid);
+
+                dbus_message_unref (reply);
 
-                return ssid;
+                return g_strdup (ssid);
         }
 #endif
 
-- 
1.8.4