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-rw-r--r--plugins/gadget.c358
1 files changed, 358 insertions, 0 deletions
diff --git a/plugins/gadget.c b/plugins/gadget.c
new file mode 100644
index 0000000..94f6648
--- /dev/null
+++ b/plugins/gadget.c
@@ -0,0 +1,358 @@
+/*
+ *
+ * Connection Manager
+ *
+ * Copyright (C) 2007-2012 Intel Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 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 warranty of
+ * MERCHANTABILITY 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, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <errno.h>
+#include <net/if.h>
+
+#ifndef IFF_LOWER_UP
+#define IFF_LOWER_UP 0x10000
+#endif
+
+#include <glib.h>
+
+#define CONNMAN_API_SUBJECT_TO_CHANGE
+#include <connman/technology.h>
+#include <connman/plugin.h>
+#include <connman/device.h>
+#include <connman/rtnl.h>
+#include <connman/inet.h>
+#include <connman/log.h>
+
+static bool gadget_tethering = false;
+
+struct gadget_data {
+ int index;
+ unsigned flags;
+ unsigned int watch;
+ struct connman_network *network;
+};
+
+static int gadget_network_probe(struct connman_network *network)
+{
+ DBG("network %p", network);
+
+ return 0;
+}
+
+static void gadget_network_remove(struct connman_network *network)
+{
+ DBG("network %p", network);
+}
+
+static int gadget_network_connect(struct connman_network *network)
+{
+ DBG("network %p", network);
+
+ connman_network_set_connected(network, true);
+
+ return 0;
+}
+
+static int gadget_network_disconnect(struct connman_network *network)
+{
+ DBG("network %p", network);
+
+ connman_network_set_connected(network, false);
+
+ return 0;
+}
+
+static struct connman_network_driver gadget_network_driver = {
+ .name = "usb",
+ .type = CONNMAN_NETWORK_TYPE_GADGET,
+ .probe = gadget_network_probe,
+ .remove = gadget_network_remove,
+ .connect = gadget_network_connect,
+ .disconnect = gadget_network_disconnect,
+};
+
+static void add_network(struct connman_device *device,
+ struct gadget_data *gadget)
+{
+ struct connman_network *network;
+ int index;
+
+ network = connman_network_create("gadget",
+ CONNMAN_NETWORK_TYPE_GADGET);
+ if (!network)
+ return;
+
+ index = connman_device_get_index(device);
+ connman_network_set_index(network, index);
+
+ connman_network_set_name(network, "Wired");
+
+ if (connman_device_add_network(device, network) < 0) {
+ connman_network_unref(network);
+ return;
+ }
+
+ if (!gadget_tethering)
+ /*
+ * Prevent service from starting the reconnect
+ * procedure as we do not want the DHCP client
+ * to run when tethering.
+ */
+ connman_network_set_group(network, "usb");
+
+ gadget->network = network;
+}
+
+static void remove_network(struct connman_device *device,
+ struct gadget_data *gadget)
+{
+ if (!gadget->network)
+ return;
+
+ connman_device_remove_network(device, gadget->network);
+ connman_network_unref(gadget->network);
+
+ gadget->network = NULL;
+}
+
+static void gadget_newlink(unsigned flags, unsigned change, void *user_data)
+{
+ struct connman_device *device = user_data;
+ struct gadget_data *gadget = connman_device_get_data(device);
+
+ DBG("index %d flags %d change %d", gadget->index, flags, change);
+
+ if ((gadget->flags & IFF_UP) != (flags & IFF_UP)) {
+ if (flags & IFF_UP) {
+ DBG("power on");
+ connman_device_set_powered(device, true);
+ } else {
+ DBG("power off");
+ connman_device_set_powered(device, false);
+ }
+ }
+
+ if ((gadget->flags & IFF_LOWER_UP) != (flags & IFF_LOWER_UP)) {
+ if (flags & IFF_LOWER_UP) {
+ DBG("carrier on");
+ add_network(device, gadget);
+ } else {
+ DBG("carrier off");
+ remove_network(device, gadget);
+ }
+ }
+
+ gadget->flags = flags;
+}
+
+static int gadget_dev_probe(struct connman_device *device)
+{
+ struct gadget_data *gadget;
+
+ DBG("device %p", device);
+
+ gadget = g_try_new0(struct gadget_data, 1);
+ if (!gadget)
+ return -ENOMEM;
+
+ connman_device_set_data(device, gadget);
+
+ gadget->index = connman_device_get_index(device);
+ gadget->flags = 0;
+
+ gadget->watch = connman_rtnl_add_newlink_watch(gadget->index,
+ gadget_newlink, device);
+
+ return 0;
+}
+
+static void gadget_dev_remove(struct connman_device *device)
+{
+ struct gadget_data *gadget = connman_device_get_data(device);
+
+ DBG("device %p", device);
+
+ connman_device_set_data(device, NULL);
+
+ connman_rtnl_remove_watch(gadget->watch);
+
+ remove_network(device, gadget);
+
+ g_free(gadget);
+}
+
+static int gadget_dev_enable(struct connman_device *device)
+{
+ struct gadget_data *gadget = connman_device_get_data(device);
+
+ DBG("device %p", device);
+
+ return connman_inet_ifup(gadget->index);
+}
+
+static int gadget_dev_disable(struct connman_device *device)
+{
+ struct gadget_data *gadget = connman_device_get_data(device);
+
+ DBG("device %p", device);
+
+ return connman_inet_ifdown(gadget->index);
+}
+
+static struct connman_device_driver gadget_dev_driver = {
+ .name = "gadget",
+ .type = CONNMAN_DEVICE_TYPE_GADGET,
+ .probe = gadget_dev_probe,
+ .remove = gadget_dev_remove,
+ .enable = gadget_dev_enable,
+ .disable = gadget_dev_disable,
+};
+
+static GList *cdc_interface_list = NULL;
+
+static void gadget_tech_add_interface(struct connman_technology *technology,
+ int index, const char *name, const char *ident)
+{
+ DBG("index %d name %s ident %s", index, name, ident);
+
+ if (g_list_find(cdc_interface_list, GINT_TO_POINTER((int)index)))
+ return;
+
+ cdc_interface_list = g_list_prepend(cdc_interface_list,
+ (GINT_TO_POINTER((int) index)));
+}
+
+static void gadget_tech_remove_interface(struct connman_technology *technology,
+ int index)
+{
+ DBG("index %d", index);
+
+ cdc_interface_list = g_list_remove(cdc_interface_list,
+ GINT_TO_POINTER((int) index));
+}
+
+static void gadget_tech_enable_tethering(struct connman_technology *technology,
+ const char *bridge)
+{
+ GList *list;
+
+ for (list = cdc_interface_list; list; list = list->next) {
+ int index = GPOINTER_TO_INT(list->data);
+ struct connman_device *device =
+ connman_device_find_by_index(index);
+ struct gadget_data *gadget;
+
+ if (device) {
+ gadget = connman_device_get_data(device);
+ if (gadget)
+ remove_network(device, gadget);
+ }
+
+ connman_technology_tethering_notify(technology, true);
+
+ connman_inet_ifup(index);
+
+ connman_inet_add_to_bridge(index, bridge);
+ }
+}
+
+static void gadget_tech_disable_tethering(struct connman_technology *technology,
+ const char *bridge)
+{
+ GList *list;
+
+ for (list = cdc_interface_list; list; list = list->next) {
+ int index = GPOINTER_TO_INT(list->data);
+
+ connman_inet_remove_from_bridge(index, bridge);
+
+ connman_inet_ifdown(index);
+
+ connman_technology_tethering_notify(technology, false);
+ }
+}
+
+static int gadget_tech_set_tethering(struct connman_technology *technology,
+ const char *identifier, const char *passphrase,
+ const char *bridge, bool enabled)
+{
+ DBG("bridge %s enabled %d", bridge, enabled);
+
+ if (enabled)
+ gadget_tech_enable_tethering(technology, bridge);
+ else
+ gadget_tech_disable_tethering(technology, bridge);
+
+ return 0;
+}
+
+static int gadget_tech_probe(struct connman_technology *technology)
+{
+ return 0;
+}
+
+static void gadget_tech_remove(struct connman_technology *technology)
+{
+ g_list_free(cdc_interface_list);
+
+ cdc_interface_list = NULL;
+}
+
+static struct connman_technology_driver gadget_tech_driver = {
+ .name = "cdc_ethernet",
+ .type = CONNMAN_SERVICE_TYPE_GADGET,
+ .probe = gadget_tech_probe,
+ .remove = gadget_tech_remove,
+ .add_interface = gadget_tech_add_interface,
+ .remove_interface = gadget_tech_remove_interface,
+ .set_tethering = gadget_tech_set_tethering,
+};
+
+static int gadget_init(void)
+{
+ int err;
+
+ err = connman_technology_driver_register(&gadget_tech_driver);
+ if (err < 0) {
+ return err;
+ }
+
+ err = connman_network_driver_register(&gadget_network_driver);
+ if (err < 0)
+ return err;
+
+ err = connman_device_driver_register(&gadget_dev_driver);
+ if (err < 0) {
+ connman_technology_driver_unregister(&gadget_tech_driver);
+ return err;
+ }
+
+ return 0;
+}
+
+static void gadget_exit(void)
+{
+ connman_technology_driver_unregister(&gadget_tech_driver);
+ connman_network_driver_unregister(&gadget_network_driver);
+ connman_device_driver_unregister(&gadget_dev_driver);
+}
+
+CONNMAN_PLUGIN_DEFINE(gadget, "Gadget interface plugin", VERSION,
+ CONNMAN_PLUGIN_PRIORITY_DEFAULT, gadget_init, gadget_exit)