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/*
* Example UPnP device/service, implementing the BinaryLight device and
* SwitchPower services to emulate a light switch.
*
* The user interface is as minimal as possible so that the GUPnP concepts and
* best practises are more apparent. For a better implementation of
* BinaryLight, see gupnp-tools.
*
* This example code is in the public domain.
*/
#include <libgupnp/gupnp.h>
#include <stdlib.h>
#include <gmodule.h>
static gboolean status;
static gboolean quiet;
static GOptionEntry entries[] =
{
{ "quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet, "Turn off output", NULL },
{ NULL }
};
G_BEGIN_DECLS
G_MODULE_EXPORT void set_target_cb (GUPnPService *service,
GUPnPServiceAction *action,
gpointer user_data);
G_MODULE_EXPORT void get_target_cb (GUPnPService *service,
GUPnPServiceAction *action,
gpointer user_data);
G_MODULE_EXPORT void get_status_cb (GUPnPService *service,
GUPnPServiceAction *action,
gpointer user_data);
G_MODULE_EXPORT void query_target_cb (GUPnPService *service, char *variable,
GValue *value, gpointer user_data);
G_MODULE_EXPORT void query_status_cb (GUPnPService *service, char *variable,
GValue *value, gpointer user_data);
G_END_DECLS
/*
* Action handlers
*/
/* SetTarget */
G_MODULE_EXPORT void
set_target_cb (GUPnPService *service,
GUPnPServiceAction *action,
G_GNUC_UNUSED gpointer user_data)
{
gboolean target;
/* Get the new target value */
gupnp_service_action_get (action,
"newTargetValue", G_TYPE_BOOLEAN, &target,
NULL);
/* If the new target doesn't match the current status, change the status and
emit a notification that the status has changed. */
if (target != status) {
status = target;
gupnp_service_notify (service,
"Status", G_TYPE_BOOLEAN, status,
NULL);
if (!quiet)
{
g_print ("The light is now %s.\n", status ? "on" : "off");
}
}
/* Return success to the client */
gupnp_service_action_return_success (action);
}
/* GetTarget */
G_MODULE_EXPORT void
get_target_cb (G_GNUC_UNUSED GUPnPService *service,
GUPnPServiceAction *action,
G_GNUC_UNUSED gpointer user_data)
{
gupnp_service_action_set (action,
"RetTargetValue", G_TYPE_BOOLEAN, status,
NULL);
gupnp_service_action_return_success (action);
}
/* GetStatus */
G_MODULE_EXPORT void
get_status_cb (G_GNUC_UNUSED GUPnPService *service,
GUPnPServiceAction *action,
G_GNUC_UNUSED gpointer user_data)
{
gupnp_service_action_set (action,
"ResultStatus", G_TYPE_BOOLEAN, status,
NULL);
gupnp_service_action_return_success (action);
}
/*
* State Variable query handlers
*/
/* Target */
G_MODULE_EXPORT void
query_target_cb (G_GNUC_UNUSED GUPnPService *service,
G_GNUC_UNUSED char *variable,
GValue *value,
G_GNUC_UNUSED gpointer user_data)
{
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, status);
}
/* Status */
G_MODULE_EXPORT void
query_status_cb (G_GNUC_UNUSED GUPnPService *service,
G_GNUC_UNUSED char *variable,
GValue *value,
G_GNUC_UNUSED gpointer user_data)
{
g_value_init (value, G_TYPE_BOOLEAN);
g_value_set_boolean (value, status);
}
int
main (G_GNUC_UNUSED int argc, G_GNUC_UNUSED char **argv)
{
GOptionContext *optionContext;
GMainLoop *main_loop;
GError *error = NULL;
GUPnPContext *context;
GUPnPRootDevice *dev;
GUPnPServiceInfo *service;
optionContext = g_option_context_new (NULL);
g_option_context_add_main_entries (optionContext, entries, NULL);
if (!g_option_context_parse (optionContext, &argc, &argv, &error))
{
g_print ("option parsing failed: %s\n", error->message);
exit (1);
}
/* By default the light is off */
status = FALSE;
if (!quiet)
{
g_print ("The light is now %s.\n", status ? "on" : "off");
}
/* Create the UPnP context */
context = gupnp_context_new_for_address (NULL, 0, GSSDP_UDA_VERSION_1_0, &error);
if (error) {
g_printerr ("Error creating the GUPnP context: %s\n",
error->message);
g_error_free (error);
return EXIT_FAILURE;
}
/* Create root device */
dev = gupnp_root_device_new (context, "BinaryLight1.xml", ".", &error);
if (error != NULL) {
g_printerr ("Error creating the GUPnP root device: %s\n",
error->message);
g_error_free (error);
return EXIT_FAILURE;
}
gupnp_root_device_set_available (dev, TRUE);
/* Get the switch service from the root device */
service = gupnp_device_info_get_service
(GUPNP_DEVICE_INFO (dev), "urn:schemas-upnp-org:service:SwitchPower:1");
if (!service) {
g_printerr ("Cannot get SwitchPower1 service\n");
return EXIT_FAILURE;
}
/* Autoconnect the action and state variable handlers. This connects
query_target_cb and query_status_cb to the Target and Status state
variables query callbacks, and set_target_cb, get_target_cb and
get_status_cb to SetTarget, GetTarget and GetStatus actions
respectively. */
gupnp_service_signals_autoconnect (GUPNP_SERVICE (service), NULL, &error);
if (error) {
g_printerr ("Failed to autoconnect signals: %s\n", error->message);
g_error_free (error);
return EXIT_FAILURE;
}
/* Run the main loop */
main_loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (main_loop);
/* Cleanup */
g_main_loop_unref (main_loop);
g_object_unref (service);
g_object_unref (dev);
g_object_unref (context);
return EXIT_SUCCESS;
}
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