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glib/gio/tests/gdbus-example-server.c
David Zeuthen 0b2b4deac5 GDBus: Add GDBusSendMessageFlags
This is currently unused but might be useful in the future. For
example, it might be nice with a way to bypass the current queue of
outgoing messages - having a flag enumeration allows us to add a
G_DBUS_SEND_MESSAGE_FLAGS_BYPASS_QUEUE etc. etc.

This commit breaks ABI and API. Users of the (rarely used) API to send
messages will have to port to this new API.

Signed-off-by: David Zeuthen <davidz@redhat.com>
2010-07-19 16:07:57 -04:00

393 lines
14 KiB
C

#include <gio/gio.h>
#include <stdlib.h>
#ifdef G_OS_UNIX
#include <gio/gunixfdlist.h>
/* For STDOUT_FILENO */
#include <unistd.h>
#endif
/* ---------------------------------------------------------------------------------------------------- */
static GDBusNodeInfo *introspection_data = NULL;
/* Introspection data for the service we are exporting */
static const gchar introspection_xml[] =
"<node>"
" <interface name='org.gtk.GDBus.TestInterface'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnInterface'/>"
" <annotation name='org.gtk.GDBus.Annotation' value='AlsoOnInterface'/>"
" <method name='HelloWorld'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnMethod'/>"
" <arg type='s' name='greeting' direction='in'/>"
" <arg type='s' name='response' direction='out'/>"
" </method>"
" <method name='EmitSignal'>"
" <arg type='d' name='speed_in_mph' direction='in'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnArg'/>"
" </arg>"
" </method>"
" <method name='GimmeStdout'/>"
" <signal name='VelocityChanged'>"
" <annotation name='org.gtk.GDBus.Annotation' value='Onsignal'/>"
" <arg type='d' name='speed_in_mph'/>"
" <arg type='s' name='speed_as_string'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnArg_NonFirst'/>"
" </arg>"
" </signal>"
" <property type='s' name='FluxCapicitorName' access='read'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnProperty'>"
" <annotation name='org.gtk.GDBus.Annotation' value='OnAnnotation_YesThisIsCrazy'/>"
" </annotation>"
" </property>"
" <property type='s' name='Title' access='readwrite'/>"
" <property type='s' name='ReadingAlwaysThrowsError' access='read'/>"
" <property type='s' name='WritingAlwaysThrowsError' access='readwrite'/>"
" <property type='s' name='OnlyWritable' access='write'/>"
" <property type='s' name='Foo' access='read'/>"
" <property type='s' name='Bar' access='read'/>"
" </interface>"
"</node>";
/* ---------------------------------------------------------------------------------------------------- */
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
}
}
static gchar *_global_title = NULL;
static gboolean swap_a_and_b = FALSE;
static GVariant *
handle_get_property (GDBusConnection *connection,
const gchar *sender,
const gchar *object_path,
const gchar *interface_name,
const gchar *property_name,
GError **error,
gpointer user_data)
{
GVariant *ret;
ret = NULL;
if (g_strcmp0 (property_name, "FluxCapicitorName") == 0)
{
ret = g_variant_new_string ("DeLorean");
}
else if (g_strcmp0 (property_name, "Title") == 0)
{
if (_global_title == NULL)
_global_title = g_strdup ("Back To C!");
ret = g_variant_new_string (_global_title);
}
else if (g_strcmp0 (property_name, "ReadingAlwaysThrowsError") == 0)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"Hello %s. I thought I said reading this property "
"always results in an error. kthxbye",
sender);
}
else if (g_strcmp0 (property_name, "WritingAlwaysThrowsError") == 0)
{
ret = g_variant_new_string ("There's no home like home");
}
else if (g_strcmp0 (property_name, "Foo") == 0)
{
ret = g_variant_new_string (swap_a_and_b ? "Tock" : "Tick");
}
else if (g_strcmp0 (property_name, "Bar") == 0)
{
ret = g_variant_new_string (swap_a_and_b ? "Tick" : "Tock");
}
return ret;
}
static gboolean
handle_set_property (GDBusConnection *connection,
const gchar *sender,
const gchar *object_path,
const gchar *interface_name,
const gchar *property_name,
GVariant *value,
GError **error,
gpointer user_data)
{
if (g_strcmp0 (property_name, "Title") == 0)
{
if (g_strcmp0 (_global_title, g_variant_get_string (value, NULL)) != 0)
{
GVariantBuilder *builder;
GError *local_error;
g_free (_global_title);
_global_title = g_variant_dup_string (value, NULL);
local_error = NULL;
builder = g_variant_builder_new (G_VARIANT_TYPE_ARRAY);
g_variant_builder_add (builder,
"{sv}",
"Title",
g_variant_new_string (_global_title));
g_dbus_connection_emit_signal (connection,
NULL,
object_path,
"org.freedesktop.DBus.Properties",
"PropertiesChanged",
g_variant_new ("(sa{sv}as)",
interface_name,
builder,
NULL),
&local_error);
g_assert_no_error (local_error);
}
}
else if (g_strcmp0 (property_name, "ReadingAlwaysThrowsError") == 0)
{
/* do nothing - they can't read it after all! */
}
else if (g_strcmp0 (property_name, "WritingAlwaysThrowsError") == 0)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_FAILED,
"Hello AGAIN %s. I thought I said writing this property "
"always results in an error. kthxbye",
sender);
}
return *error == NULL;
}
/* for now */
static const GDBusInterfaceVTable interface_vtable =
{
handle_method_call,
handle_get_property,
handle_set_property
};
/* ---------------------------------------------------------------------------------------------------- */
static gboolean
on_timeout_cb (gpointer user_data)
{
GDBusConnection *connection = G_DBUS_CONNECTION (user_data);
GVariantBuilder *builder;
GVariantBuilder *invalidated_builder;
GError *error;
swap_a_and_b = !swap_a_and_b;
error = NULL;
builder = g_variant_builder_new (G_VARIANT_TYPE_ARRAY);
invalidated_builder = g_variant_builder_new (G_VARIANT_TYPE ("as"));
g_variant_builder_add (builder,
"{sv}",
"Foo",
g_variant_new_string (swap_a_and_b ? "Tock" : "Tick"));
g_variant_builder_add (builder,
"{sv}",
"Bar",
g_variant_new_string (swap_a_and_b ? "Tick" : "Tock"));
g_dbus_connection_emit_signal (connection,
NULL,
"/org/gtk/GDBus/TestObject",
"org.freedesktop.DBus.Properties",
"PropertiesChanged",
g_variant_new ("(sa{sv}as)",
"org.gtk.GDBus.TestInterface",
builder,
invalidated_builder),
&error);
g_assert_no_error (error);
return TRUE;
}
/* ---------------------------------------------------------------------------------------------------- */
static void
on_bus_acquired (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
guint registration_id;
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);
/* swap value of properties Foo and Bar every two seconds */
g_timeout_add_seconds (2,
on_timeout_cb,
connection);
}
static void
on_name_acquired (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
}
static void
on_name_lost (GDBusConnection *connection,
const gchar *name,
gpointer user_data)
{
exit (1);
}
int
main (int argc, char *argv[])
{
guint owner_id;
GMainLoop *loop;
g_type_init ();
/* 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);
owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
"org.gtk.GDBus.TestServer",
G_BUS_NAME_OWNER_FLAGS_NONE,
on_bus_acquired,
on_name_acquired,
on_name_lost,
NULL,
NULL);
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_bus_unown_name (owner_id);
g_dbus_node_info_unref (introspection_data);
return 0;
}