[tracker/wip/carlosg/portal: 34/41] portal: Add CloseSession request

[Carlos Garnacho <carlosg src gnome org>]

commit 9943b479faaab2c2cab860af6d7e445534788f46
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Jan 24 15:48:57 2020 +0100

    portal: Add CloseSession request
    
    This request takes an object path received through CreateSession,
    checks ownership from the DBus sender, and explicitly closes a
    session.

 src/portal/tracker-portal.c | 47 +++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 45 insertions(+), 2 deletions(-)
---
diff --git a/src/portal/tracker-portal.c b/src/portal/tracker-portal.c
index fd2119d54..08a9234a7 100644
--- a/src/portal/tracker-portal.c
+++ b/src/portal/tracker-portal.c
@@ -72,6 +72,9 @@ static const gchar portal_xml[] =
        "      <arg type='s' name='service' direction='in' />"
        "      <arg type='o' name='result' direction='out' />"
        "    </method>"
+       "    <method name='CloseSession'>"
+       "      <arg type='o' name='object_path' direction='in' />"
+       "    </method>"
        "  </interface>"
        "</node>";
 
@@ -240,7 +243,6 @@ portal_iface_method_call (GDBusConnection       *connection,
                g_autoptr(TrackerEndpoint) endpoint = NULL;
                g_autoptr(GError) error = NULL;
                g_auto(GStrv) graphs = NULL;
-               const gchar *sender;
                GBusType bus_type;
                TrackerSession session;
 
@@ -283,7 +285,6 @@ portal_iface_method_call (GDBusConnection       *connection,
 
                session_object_path = g_strdup_printf ("/org/freedesktop/portal/Tracker/Session_%" 
G_GUINT64_FORMAT,
                                                       portal->session_ids++);
-               sender = g_dbus_method_invocation_get_sender (invocation);
 
                endpoint = tracker_portal_endpoint_new (connection,
                                                        dbus_connection,
@@ -313,6 +314,48 @@ portal_iface_method_call (GDBusConnection       *connection,
                g_debug ("Created session object '%s'", session.object_path);
                g_dbus_method_invocation_return_value (invocation,
                                                       g_variant_new ("(o)", session.object_path));
+       } else if (g_strcmp0 (method_name, "CloseSession") == 0) {
+               g_autofree gchar *uri = NULL;
+               g_autofree gchar *object_path = NULL;
+               gboolean found = FALSE;
+               gint i;
+
+               g_variant_get (parameters, "(o)", &object_path);
+               g_debug ("Got request for closing session '%s'", object_path);
+
+               for (i = 0; i < portal->sessions->len; i++) {
+                       TrackerSession *session;
+                       gchar *peer;
+
+                       session = &g_array_index (portal->sessions, TrackerSession, i);
+
+                       if (g_strcmp0 (session->object_path, object_path) != 0)
+                               continue;
+
+                       found = TRUE;
+                       g_object_get (session->endpoint, "peer", &peer, NULL);
+
+                       if (g_strcmp0 (peer, sender) == 0) {
+                               g_array_remove_index_fast (portal->sessions, i);
+                               g_dbus_method_invocation_return_value (invocation, NULL);
+                       } else {
+                               g_dbus_method_invocation_return_error (invocation,
+                                                                      G_DBUS_ERROR,
+                                                                      G_DBUS_ERROR_AUTH_FAILED,
+                                                                      "Sender '%s' is not owner of the 
session",
+                                                                      sender);
+                       }
+
+                       break;
+               }
+
+               if (!found) {
+                       g_dbus_method_invocation_return_error (invocation,
+                                                              G_DBUS_ERROR,
+                                                              G_DBUS_ERROR_INVALID_ARGS,
+                                                              "Object path '%s' not found",
+                                                              object_path);
+               }
        } else {
                g_dbus_method_invocation_return_error (invocation,
                                                       G_DBUS_ERROR,