static gboolean
on_new_connection (GDBusServer *server,
GDBusConnection *connection,
gpointer user_data)
{
guint registration_id;
GCredentials *credentials;
gchar *s;
credentials = g_dbus_connection_get_peer_credentials (connection);
if (credentials == NULL)
s = g_strdup ("(no credentials received)");
else
s = g_credentials_to_string (credentials);
g_print ("Client connected.\n"
"Peer credentials: %s\n"
"Negotiated capabilities: unix-fd-passing=%d\n",
s,
g_dbus_connection_get_capabilities (connection) & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
g_object_ref (connection);
registration_id = g_dbus_connection_register_object (connection,
"/org/gtk/GDBus/TestObject",
introspection_data->interfaces[0],
&interface_vtable,
NULL, /* user_data */
NULL, /* user_data_free_func */
NULL); /* GError** */
g_assert (registration_id > 0);
return TRUE;
}
static void
handle_method_call (GDBusConnection *connection,
const gchar *sender,
const gchar *object_path,
const gchar *interface_name,
const gchar *method_name,
GVariant *parameters,
GDBusMethodInvocation *invocation,
gpointer user_data)
{
if (g_strcmp0 (method_name, "HelloWorld") == 0)
{
const gchar *greeting;
g_variant_get (parameters, "(&s)", &greeting);
if (g_strcmp0 (greeting, "Return Unregistered") == 0)
{
g_dbus_method_invocation_return_error (invocation,
G_IO_ERROR,
G_IO_ERROR_FAILED_HANDLED,
"As requested, here's a GError not registered (G_IO_ERROR_FAILED_HANDLED)");
}
else if (g_strcmp0 (greeting, "Return Registered") == 0)
{
g_dbus_method_invocation_return_error (invocation,
G_DBUS_ERROR,
G_DBUS_ERROR_MATCH_RULE_NOT_FOUND,
"As requested, here's a GError that is registered (G_DBUS_ERROR_MATCH_RULE_NOT_FOUND)");
}
else if (g_strcmp0 (greeting, "Return Raw") == 0)
{
g_dbus_method_invocation_return_dbus_error (invocation,
"org.gtk.GDBus.SomeErrorName",
"As requested, here's a raw D-Bus error");
}
else
{
gchar *response;
response = g_strdup_printf ("You greeted me with '%s'. Thanks!", greeting);
g_dbus_method_invocation_return_value (invocation,
g_variant_new ("(s)", response));
g_free (response);
}
}
else if (g_strcmp0 (method_name, "EmitSignal") == 0)
{
GError *local_error;
gdouble speed_in_mph;
gchar *speed_as_string;
g_variant_get (parameters, "(d)", &speed_in_mph);
speed_as_string = g_strdup_printf ("%g mph!", speed_in_mph);
local_error = NULL;
g_dbus_connection_emit_signal (connection,
NULL,
object_path,
interface_name,
"VelocityChanged",
g_variant_new ("(ds)",
speed_in_mph,
speed_as_string),
&local_error);
g_assert_no_error (local_error);
g_free (speed_as_string);
g_dbus_method_invocation_return_value (invocation, NULL);
}
else if (g_strcmp0 (method_name, "GimmeStdout") == 0)
{
#ifdef G_OS_UNIX
if (g_dbus_connection_get_capabilities (connection) & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING)
{
GDBusMessage *reply;
GUnixFDList *fd_list;
GError *error;
fd_list = g_unix_fd_list_new ();
error = NULL;
g_unix_fd_list_append (fd_list, STDOUT_FILENO, &error);
g_assert_no_error (error);
reply = g_dbus_message_new_method_reply (g_dbus_method_invocation_get_message (invocation));
g_dbus_message_set_unix_fd_list (reply, fd_list);
error = NULL;
g_dbus_connection_send_message (connection,
reply,
G_DBUS_SEND_MESSAGE_FLAGS_NONE,
NULL, /* out_serial */
&error);
g_assert_no_error (error);
g_object_unref (invocation);
g_object_unref (fd_list);
g_object_unref (reply);
}
else
{
g_dbus_method_invocation_return_dbus_error (invocation,
"org.gtk.GDBus.Failed",
"Your message bus daemon does not support file descriptor passing (need D-Bus >= 1.3.0)");
}
#else
g_dbus_method_invocation_return_dbus_error (invocation,
"org.gtk.GDBus.NotOnUnix",
"Your OS does not support file descriptor passing");
#endif
}
}
int
main (int argc, char *argv[])
{
gint ret;
gboolean opt_server;
gchar *opt_address;
GOptionContext *opt_context;
gboolean opt_allow_anonymous;
GError *error;
GOptionEntry opt_entries[] =
{
{ "server", 's', 0, G_OPTION_ARG_NONE, &opt_server, "Start a server instead of a client", NULL },
{ "address", 'a', 0, G_OPTION_ARG_STRING, &opt_address, "D-Bus address to use", NULL },
{ "allow-anonymous", 'n', 0, G_OPTION_ARG_NONE, &opt_allow_anonymous, "Allow anonymous authentication", NULL },
{ NULL}
};
ret = 1;
g_type_init ();
opt_address = NULL;
opt_server = FALSE;
opt_allow_anonymous = FALSE;
opt_context = g_option_context_new ("peer-to-peer example");
error = NULL;
g_option_context_add_main_entries (opt_context, opt_entries, NULL);
if (!g_option_context_parse (opt_context, &argc, &argv, &error))
{
g_printerr ("Error parsing options: %s\n", error->message);
g_error_free (error);
goto out;
}
if (opt_address == NULL)
{
g_printerr ("Incorrect usage, try --help.\n");
goto out;
}
if (!opt_server && opt_allow_anonymous)
{
g_printerr ("The --allow-anonymous option only makes sense when used with --server.\n");
goto out;
}
/* We are lazy here - we don't want to manually provide
* the introspection data structures - so we just build
* them from XML.
*/
introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
g_assert (introspection_data != NULL);
if (opt_server)
{
GDBusServer *server;
gchar *guid;
GMainLoop *loop;
GDBusServerFlags server_flags;
guid = g_dbus_generate_guid ();
server_flags = G_DBUS_SERVER_FLAGS_NONE;
if (opt_allow_anonymous)
server_flags |= G_DBUS_SERVER_FLAGS_AUTHENTICATION_ALLOW_ANONYMOUS;
error = NULL;
server = g_dbus_server_new_sync (opt_address,
server_flags,
guid,
NULL, /* GDBusAuthObserver */
NULL, /* GCancellable */
&error);
g_dbus_server_start (server);
g_free (guid);
if (server == NULL)
{
g_printerr ("Error creating server at address %s: %s\n", opt_address, error->message);
g_error_free (error);
goto out;
}
g_print ("Server is listening at: %s\n", g_dbus_server_get_client_address (server));
g_signal_connect (server,
"new-connection",
G_CALLBACK (on_new_connection),
NULL);
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_object_unref (server);
g_main_loop_unref (loop);
}
else
{
GDBusConnection *connection;
const gchar *greeting_response;
GVariant *value;
gchar *greeting;
error = NULL;
connection = g_dbus_connection_new_for_address_sync (opt_address,
G_DBUS_CONNECTION_FLAGS_AUTHENTICATION_CLIENT,
NULL, /* GDBusAuthObserver */
NULL, /* GCancellable */
&error);
if (connection == NULL)
{
g_printerr ("Error connecting to D-Bus address %s: %s\n", opt_address, error->message);
g_error_free (error);
goto out;
}
g_print ("Connected.\n"
"Negotiated capabilities: unix-fd-passing=%d\n",
g_dbus_connection_get_capabilities (connection) & G_DBUS_CAPABILITY_FLAGS_UNIX_FD_PASSING);
greeting = g_strdup_printf ("Hey, it's %" G_GUINT64_FORMAT " already!", (guint64) time (NULL));
value = g_dbus_connection_call_sync (connection,
NULL, /* bus_name */
"/org/gtk/GDBus/TestObject",
"org.gtk.GDBus.TestPeerInterface",
"HelloWorld",
g_variant_new ("(s)", greeting),
G_VARIANT_TYPE ("(s)"),
G_DBUS_CALL_FLAGS_NONE,
-1,
NULL,
&error);
if (value == NULL)
{
g_printerr ("Error invoking HelloWorld(): %s\n", error->message);
g_error_free (error);
goto out;
}
g_variant_get (value, "(&s)", &greeting_response);
g_print ("Server said: %s\n", greeting_response);
g_variant_unref (value);
g_object_unref (connection);
}
g_dbus_node_info_unref (introspection_data);
ret = 0;
out:
return ret;
}
