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/*
* Copyright 2012 Canonical Ltd.
*
* Authors: Lars Uebernickel <lars.uebernickel@canonical.com>
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3, as published
* by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranties of
* MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libindicator/indicator-service.h>
#include <libdbusmenu-glib/dbusmenu-glib.h>
#include <gtk/gtk.h>
#include <cups/cups.h>
#include "dbus-names.h"
#include "cups-notifier.h"
#include "indicator-printers-menu.h"
#include "indicator-printer-state-notifier.h"
#define NOTIFY_LEASE_DURATION (15 * 60)
static int
create_subscription ()
{
ipp_t *req;
ipp_t *resp;
ipp_attribute_t *attr;
int id = 0;
req = ippNewRequest (IPP_CREATE_PRINTER_SUBSCRIPTION);
ippAddString (req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddString (req, IPP_TAG_SUBSCRIPTION, IPP_TAG_KEYWORD,
"notify-events", NULL, "all");
ippAddString (req, IPP_TAG_SUBSCRIPTION, IPP_TAG_URI,
"notify-recipient-uri", NULL, "dbus://");
ippAddInteger (req, IPP_TAG_SUBSCRIPTION, IPP_TAG_INTEGER,
"notify-lease-duration", NOTIFY_LEASE_DURATION);
resp = cupsDoRequest (CUPS_HTTP_DEFAULT, req, "/");
if (!resp || cupsLastError() != IPP_OK) {
g_warning ("Error subscribing to CUPS notifications: %s\n",
cupsLastErrorString ());
return 0;
}
attr = ippFindAttribute (resp, "notify-subscription-id", IPP_TAG_INTEGER);
if (attr)
id = ippGetInteger (attr, 0);
else
g_warning ("ipp-create-printer-subscription response doesn't contain "
"subscription id.\n");
ippDelete (resp);
return id;
}
static gboolean
renew_subscription (int id)
{
ipp_t *req;
ipp_t *resp;
req = ippNewRequest (IPP_RENEW_SUBSCRIPTION);
ippAddInteger (req, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
"notify-subscription-id", id);
ippAddString (req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddString (req, IPP_TAG_SUBSCRIPTION, IPP_TAG_URI,
"notify-recipient-uri", NULL, "dbus://");
ippAddInteger (req, IPP_TAG_SUBSCRIPTION, IPP_TAG_INTEGER,
"notify-lease-duration", NOTIFY_LEASE_DURATION);
resp = cupsDoRequest (CUPS_HTTP_DEFAULT, req, "/");
if (!resp || cupsLastError() != IPP_OK) {
g_warning ("Error renewing CUPS subscription %d: %s\n",
id, cupsLastErrorString ());
return FALSE;
}
ippDelete (resp);
return TRUE;
}
static gboolean
renew_subscription_timeout (gpointer userdata)
{
int *subscription_id = userdata;
if (*subscription_id <= 0 || !renew_subscription (*subscription_id))
*subscription_id = create_subscription ();
return TRUE;
}
void
cancel_subscription (int id)
{
ipp_t *req;
ipp_t *resp;
if (id <= 0)
return;
req = ippNewRequest (IPP_CANCEL_SUBSCRIPTION);
ippAddString (req, IPP_TAG_OPERATION, IPP_TAG_URI,
"printer-uri", NULL, "/");
ippAddInteger (req, IPP_TAG_OPERATION, IPP_TAG_INTEGER,
"notify-subscription-id", id);
resp = cupsDoRequest (CUPS_HTTP_DEFAULT, req, "/");
if (!resp || cupsLastError() != IPP_OK) {
g_warning ("Error subscribing to CUPS notifications: %s\n",
cupsLastErrorString ());
return;
}
ippDelete (resp);
}
static void
service_shutdown (IndicatorService *service, gpointer user_data)
{
int subscription_id = GPOINTER_TO_INT (user_data);
g_debug("Shutting down indicator-printers-service");
cancel_subscription (subscription_id);
gtk_main_quit ();
}
int main (int argc, char *argv[])
{
IndicatorService *service;
DbusmenuServer *menuserver;
CupsNotifier *cups_notifier;
IndicatorPrintersMenu *menu;
IndicatorPrinterStateNotifier *state_notifier;
GError *error = NULL;
int subscription_id;
gtk_init (&argc, &argv);
subscription_id = create_subscription ();
g_timeout_add_seconds (NOTIFY_LEASE_DURATION - 60,
renew_subscription_timeout,
&subscription_id);
service = indicator_service_new_version (INDICATOR_PRINTERS_DBUS_NAME,
INDICATOR_PRINTERS_DBUS_VERSION);
g_signal_connect (service,
"shutdown",
G_CALLBACK (service_shutdown),
GINT_TO_POINTER (subscription_id));
cups_notifier = cups_notifier_proxy_new_for_bus_sync (G_BUS_TYPE_SYSTEM,
0,
NULL,
CUPS_DBUS_PATH,
NULL,
&error);
if (error) {
g_warning ("Error creating cups notify handler: %s", error->message);
g_error_free (error);
g_object_unref (service);
return 1;
}
menu = g_object_new (INDICATOR_TYPE_PRINTERS_MENU,
"cups-notifier", cups_notifier,
NULL);
menuserver = dbusmenu_server_new (INDICATOR_PRINTERS_DBUS_OBJECT_PATH);
dbusmenu_server_set_root (menuserver,
indicator_printers_menu_get_root (menu));
state_notifier = g_object_new (INDICATOR_TYPE_PRINTER_STATE_NOTIFIER,
"cups-notifier", cups_notifier,
NULL);
gtk_main ();
g_object_unref (menu);
g_object_unref (menuserver);
g_object_unref (state_notifier);
g_object_unref (cups_notifier);
g_object_unref (service);
return 0;
}
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