static gboolean
is_available (NMSupplicantManager *self)
{
g_return_val_if_fail (NM_IS_SUPPLICANT_MANAGER (self), FALSE);
if (die_count_exceeded (NM_SUPPLICANT_MANAGER_GET_PRIVATE (self)->die_count))
return FALSE;
return NM_SUPPLICANT_MANAGER_GET_PRIVATE (self)->running;
}
void
nm_supplicant_manager_iface_release (NMSupplicantManager *self,
NMSupplicantInterface *iface)
{
NMSupplicantManagerPrivate *priv;
const char *ifname, *op;
g_return_if_fail (NM_IS_SUPPLICANT_MANAGER (self));
g_return_if_fail (NM_IS_SUPPLICANT_INTERFACE (iface));
ifname = nm_supplicant_interface_get_ifname (iface);
g_assert (ifname);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
g_return_if_fail (g_hash_table_lookup (priv->ifaces, ifname) == iface);
/* Ask wpa_supplicant to remove this interface */
op = nm_supplicant_interface_get_object_path (iface);
if (priv->running && priv->proxy && op) {
dbus_g_proxy_call_no_reply (priv->proxy, "RemoveInterface",
DBUS_TYPE_G_OBJECT_PATH, op,
G_TYPE_INVALID);
}
g_hash_table_remove (priv->ifaces, ifname);
}
NMSupplicantInterface *
nm_supplicant_manager_iface_get (NMSupplicantManager * self,
const char *ifname,
gboolean is_wireless)
{
NMSupplicantManagerPrivate *priv;
NMSupplicantInterface *iface = NULL;
gboolean start_now;
g_return_val_if_fail (NM_IS_SUPPLICANT_MANAGER (self), NULL);
g_return_val_if_fail (ifname != NULL, NULL);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
iface = g_hash_table_lookup (priv->ifaces, ifname);
if (!iface) {
/* If we're making the supplicant take a time out for a bit, don't
* let the supplicant interface start immediately, just let it hang
* around in INIT state until we're ready to talk to the supplicant
* again.
*/
start_now = !die_count_exceeded (priv->die_count);
nm_log_dbg (LOGD_SUPPLICANT, "(%s): creating new supplicant interface", ifname);
iface = nm_supplicant_interface_new (self, ifname, is_wireless, start_now);
if (iface)
g_hash_table_insert (priv->ifaces, g_strdup (ifname), iface);
} else {
nm_log_dbg (LOGD_SUPPLICANT, "(%s): returning existing supplicant interface", ifname);
}
return iface;
}
static void
dispose (GObject *object)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (object);
if (priv->disposed)
goto out;
priv->disposed = TRUE;
if (priv->die_count_reset_id)
g_source_remove (priv->die_count_reset_id);
if (priv->dbus_mgr) {
if (priv->name_owner_id)
g_signal_handler_disconnect (priv->dbus_mgr, priv->name_owner_id);
g_object_unref (G_OBJECT (priv->dbus_mgr));
}
g_hash_table_destroy (priv->ifaces);
if (priv->proxy)
g_object_unref (priv->proxy);
out:
/* Chain up to the parent class */
G_OBJECT_CLASS (nm_supplicant_manager_parent_class)->dispose (object);
}
static void
dispose (GObject *object)
{
NMSupplicantManager *self = (NMSupplicantManager *) object;
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
GSList *ifaces;
nm_clear_g_source (&priv->die_count_reset_id);
if (priv->cancellable) {
g_cancellable_cancel (priv->cancellable);
g_clear_object (&priv->cancellable);
}
if (priv->ifaces) {
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next)
g_object_remove_toggle_ref (ifaces->data, _sup_iface_last_ref, self);
g_slist_free (priv->ifaces);
priv->ifaces = NULL;
}
g_clear_object (&priv->proxy);
G_OBJECT_CLASS (nm_supplicant_manager_parent_class)->dispose (object);
}
void
nm_supplicant_manager_iface_release (NMSupplicantManager *self,
NMSupplicantInterface *iface)
{
NMSupplicantManagerPrivate *priv;
const char *ifname, *op;
g_return_if_fail (NM_IS_SUPPLICANT_MANAGER (self));
g_return_if_fail (NM_IS_SUPPLICANT_INTERFACE (iface));
ifname = nm_supplicant_interface_get_ifname (iface);
g_assert (ifname);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
g_return_if_fail (g_hash_table_lookup (priv->ifaces, ifname) == iface);
/* Ask wpa_supplicant to remove this interface */
op = nm_supplicant_interface_get_object_path (iface);
if (priv->running && priv->proxy && op) {
g_dbus_proxy_call (priv->proxy,
"RemoveInterface",
g_variant_new ("(o)", op),
G_DBUS_CALL_FLAGS_NONE,
3000,
NULL,
NULL,
NULL);
}
g_hash_table_remove (priv->ifaces, ifname);
}
static gboolean
is_available (NMSupplicantManager *self)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
return priv->running
&& !die_count_exceeded (priv->die_count);
}
static void
update_capabilities (NMSupplicantManager *self)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
NMSupplicantInterface *iface;
GHashTableIter hash_iter;
const char **array;
GVariant *value;
/* The supplicant only advertises global capabilities if the following
* commit has been applied:
*
* commit 1634ac0654eba8d458640a115efc0a6cde3bac4d
* Author: Dan Williams <*****@*****.**>
* Date: Sat Sep 29 19:06:30 2012 +0300
*
* dbus: Add global capabilities property
*/
priv->ap_support = AP_SUPPORT_UNKNOWN;
value = g_dbus_proxy_get_cached_property (priv->proxy, "Capabilities");
if (value) {
if (g_variant_is_of_type (value, G_VARIANT_TYPE_STRING_ARRAY)) {
array = g_variant_get_strv (value, NULL);
priv->ap_support = AP_SUPPORT_NO;
if (_nm_utils_string_in_list ("ap", array))
priv->ap_support = AP_SUPPORT_YES;
g_free (array);
}
g_variant_unref (value);
}
/* Tell all interfaces about results of the AP check */
g_hash_table_iter_init (&hash_iter, priv->ifaces);
while (g_hash_table_iter_next (&hash_iter, NULL, (gpointer) &iface))
nm_supplicant_interface_set_ap_support (iface, priv->ap_support);
nm_log_dbg (LOGD_SUPPLICANT, "AP mode is %ssupported",
(priv->ap_support == AP_SUPPORT_YES) ? "" :
(priv->ap_support == AP_SUPPORT_NO) ? "not " : "possibly ");
/* EAP-FAST */
priv->fast_supported = FALSE;
value = g_dbus_proxy_get_cached_property (priv->proxy, "EapMethods");
if (value) {
if (g_variant_is_of_type (value, G_VARIANT_TYPE_STRING_ARRAY)) {
array = g_variant_get_strv (value, NULL);
if (_nm_utils_string_in_list ("fast", array))
priv->fast_supported = TRUE;
g_free (array);
}
g_variant_unref (value);
}
nm_log_dbg (LOGD_SUPPLICANT, "EAP-FAST is %ssupported", priv->fast_supported ? "" : "not ");
}
static void
set_running (NMSupplicantManager *self, gboolean now_running)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
gboolean old_available = nm_supplicant_manager_available (self);
priv->running = now_running;
if (old_available != nm_supplicant_manager_available (self))
g_object_notify (G_OBJECT (self), NM_SUPPLICANT_MANAGER_AVAILABLE);
}
static void
set_die_count (NMSupplicantManager *self, guint new_die_count)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
gboolean old_available = nm_supplicant_manager_available (self);
priv->die_count = new_die_count;
if (old_available != nm_supplicant_manager_available (self))
g_object_notify (G_OBJECT (self), NM_SUPPLICANT_MANAGER_AVAILABLE);
}
static gboolean
wpas_die_count_reset_cb (gpointer user_data)
{
NMSupplicantManager *self = NM_SUPPLICANT_MANAGER (user_data);
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
/* Reset the die count back to zero, which allows use of the supplicant again */
priv->die_count_reset_id = 0;
set_die_count (self, 0);
nm_log_info (LOGD_SUPPLICANT, "wpa_supplicant die count reset");
return FALSE;
}
static void
set_die_count (NMSupplicantManager *self, guint new_die_count)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
gboolean old_available = is_available (self);
gboolean new_available;
priv->die_count = new_die_count;
new_available = is_available (self);
if (old_available != new_available)
availability_changed (self, new_available);
}
static void
set_running (NMSupplicantManager *self, gboolean now_running)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
gboolean old_available = is_available (self);
gboolean new_available;
priv->running = now_running;
new_available = is_available (self);
if (old_available != new_available)
availability_changed (self, new_available);
}
static void
availability_changed (NMSupplicantManager *self, gboolean available)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
GList *ifaces, *iter;
/* priv->ifaces may be modified if availability changes; can't use GHashTableIter */
ifaces = g_hash_table_get_values (priv->ifaces);
for (iter = ifaces; iter; iter = iter->next)
nm_supplicant_interface_set_supplicant_available (NM_SUPPLICANT_INTERFACE (iter->data), available);
g_list_free (ifaces);
}
static void
nm_supplicant_manager_init (NMSupplicantManager *self)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
priv->cancellable = g_cancellable_new ();
g_dbus_proxy_new_for_bus (G_BUS_TYPE_SYSTEM,
G_DBUS_PROXY_FLAGS_NONE,
NULL,
WPAS_DBUS_SERVICE,
WPAS_DBUS_PATH,
WPAS_DBUS_INTERFACE,
priv->cancellable,
(GAsyncReadyCallback) on_proxy_acquired,
self);
}
static void
availability_changed (NMSupplicantManager *self, gboolean available)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
GSList *ifaces, *iter;
if (!priv->ifaces)
return;
/* setting the supplicant as unavailable might cause the caller to unref
* the supplicant (and thus remove the instance from the list of interfaces.
* Delay that by taking an additional reference first. */
ifaces = g_slist_copy (priv->ifaces);
for (iter = ifaces; iter; iter = iter->next)
g_object_ref (iter->data);
for (iter = ifaces; iter; iter = iter->next)
nm_supplicant_interface_set_supplicant_available (iter->data, available);
g_slist_free_full (ifaces, g_object_unref);
}
static void
dispose (GObject *object)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (object);
if (priv->die_count_reset_id) {
g_source_remove (priv->die_count_reset_id);
priv->die_count_reset_id = 0;
}
if (priv->cancellable) {
g_cancellable_cancel (priv->cancellable);
g_clear_object (&priv->cancellable);
}
g_clear_pointer (&priv->ifaces, g_hash_table_unref);
g_clear_object (&priv->proxy);
G_OBJECT_CLASS (nm_supplicant_manager_parent_class)->dispose (object);
}
static void
name_owner_changed (NMDBusManager *dbus_mgr,
const char *name,
const char *old_owner,
const char *new_owner,
gpointer user_data)
{
NMSupplicantManager *self = NM_SUPPLICANT_MANAGER (user_data);
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
gboolean old_owner_good = (old_owner && strlen (old_owner));
gboolean new_owner_good = (new_owner && strlen (new_owner));
/* We only care about the supplicant here */
if (strcmp (WPAS_DBUS_SERVICE, name) != 0)
return;
if (!old_owner_good && new_owner_good) {
nm_log_info (LOGD_SUPPLICANT, "wpa_supplicant started");
set_running (self, TRUE);
} else if (old_owner_good && !new_owner_good) {
nm_log_info (LOGD_SUPPLICANT, "wpa_supplicant stopped");
/* Reschedule the die count reset timeout. Every time the supplicant
* dies we wait 10 seconds before resetting the counter. If the
* supplicant died more than twice before the timer is reset, then
* we don't try to talk to the supplicant for a while.
*/
if (priv->die_count_reset_id)
g_source_remove (priv->die_count_reset_id);
priv->die_count_reset_id = g_timeout_add_seconds (10, wpas_die_count_reset_cb, self);
set_die_count (self, priv->die_count + 1);
if (die_count_exceeded (priv->die_count)) {
nm_log_info (LOGD_SUPPLICANT,
"wpa_supplicant die count %d; ignoring for 10 seconds",
priv->die_count);
}
set_running (self, FALSE);
}
}
static void
nm_supplicant_manager_init (NMSupplicantManager * self)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
DBusGConnection *bus;
priv->dbus_mgr = nm_dbus_manager_get ();
priv->name_owner_id = g_signal_connect (priv->dbus_mgr,
NM_DBUS_MANAGER_NAME_OWNER_CHANGED,
G_CALLBACK (name_owner_changed),
self);
priv->running = nm_dbus_manager_name_has_owner (priv->dbus_mgr, WPAS_DBUS_SERVICE);
bus = nm_dbus_manager_get_connection (priv->dbus_mgr);
priv->proxy = dbus_g_proxy_new_for_name (bus,
WPAS_DBUS_SERVICE,
WPAS_DBUS_PATH,
WPAS_DBUS_INTERFACE);
priv->ifaces = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_object_unref);
}
/**
* nm_supplicant_manager_create_interface:
* @self: the #NMSupplicantManager
* @ifname: the interface for which to obtain the supplicant interface
* @is_wireless: whether the interface is supposed to be wireless.
*
* Note: the manager owns a reference to the instance and the only way to
* get the manager to release it, is by dropping all other references
* to the supplicant-interface (or destroying the manager).
*
* Retruns: (transfer-full): returns a #NMSupplicantInterface or %NULL.
* Must be unrefed at the end.
* */
NMSupplicantInterface *
nm_supplicant_manager_create_interface (NMSupplicantManager *self,
const char *ifname,
gboolean is_wireless)
{
NMSupplicantManagerPrivate *priv;
NMSupplicantInterface *iface;
GSList *ifaces;
g_return_val_if_fail (NM_IS_SUPPLICANT_MANAGER (self), NULL);
g_return_val_if_fail (ifname != NULL, NULL);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
nm_log_dbg (LOGD_SUPPLICANT, "(%s): creating new supplicant interface", ifname);
/* assert against not requesting duplicate interfaces. */
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next) {
if (g_strcmp0 (nm_supplicant_interface_get_ifname (ifaces->data), ifname) == 0)
g_return_val_if_reached (NULL);
}
iface = nm_supplicant_interface_new (ifname,
is_wireless,
priv->fast_supported,
priv->ap_support);
priv->ifaces = g_slist_prepend (priv->ifaces, iface);
g_object_add_toggle_ref ((GObject *) iface, _sup_iface_last_ref, self);
/* If we're making the supplicant take a time out for a bit, don't
* let the supplicant interface start immediately, just let it hang
* around in INIT state until we're ready to talk to the supplicant
* again.
*/
if (is_available (self))
nm_supplicant_interface_set_supplicant_available (iface, TRUE);
return iface;
}
static void
name_owner_cb (GDBusProxy *proxy, GParamSpec *pspec, gpointer user_data)
{
NMSupplicantManager *self = NM_SUPPLICANT_MANAGER (user_data);
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
char *owner;
g_return_if_fail (proxy == priv->proxy);
owner = g_dbus_proxy_get_name_owner (proxy);
nm_log_info (LOGD_SUPPLICANT, "wpa_supplicant %s", owner ? "running" : "stopped");
if (owner) {
set_running (self, TRUE);
update_capabilities (self);
} else if (priv->running) {
/* Reschedule the die count reset timeout. Every time the supplicant
* dies we wait 10 seconds before resetting the counter. If the
* supplicant died more than twice before the timer is reset, then
* we don't try to talk to the supplicant for a while.
*/
if (priv->die_count_reset_id)
g_source_remove (priv->die_count_reset_id);
priv->die_count_reset_id = g_timeout_add_seconds (10, wpas_die_count_reset_cb, self);
set_die_count (self, priv->die_count + 1);
if (die_count_exceeded (priv->die_count)) {
nm_log_info (LOGD_SUPPLICANT,
"wpa_supplicant die count %d; ignoring for 10 seconds",
priv->die_count);
}
set_running (self, FALSE);
priv->fast_supported = FALSE;
}
g_free (owner);
}
static void
_sup_iface_last_ref (gpointer data,
GObject *object,
gboolean is_last_ref)
{
NMSupplicantManager *self = data;
NMSupplicantManagerPrivate *priv;
NMSupplicantInterface *sup_iface = (NMSupplicantInterface *) object;
const char *op;
g_return_if_fail (NM_IS_SUPPLICANT_MANAGER (self));
g_return_if_fail (NM_IS_SUPPLICANT_INTERFACE (sup_iface));
g_return_if_fail (is_last_ref);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
if (!g_slist_find (priv->ifaces, sup_iface))
g_return_if_reached ();
/* Ask wpa_supplicant to remove this interface */
if ( priv->running
&& priv->proxy
&& (op = nm_supplicant_interface_get_object_path (sup_iface))) {
g_dbus_proxy_call (priv->proxy,
"RemoveInterface",
g_variant_new ("(o)", op),
G_DBUS_CALL_FLAGS_NONE,
3000,
NULL,
NULL,
NULL);
}
priv->ifaces = g_slist_remove (priv->ifaces, sup_iface);
g_object_remove_toggle_ref ((GObject *) sup_iface, _sup_iface_last_ref, self);
}
static void
on_proxy_acquired (GObject *object, GAsyncResult *result, gpointer user_data)
{
NMSupplicantManager *self;
NMSupplicantManagerPrivate *priv;
GError *error = NULL;
GDBusProxy *proxy;
proxy = g_dbus_proxy_new_for_bus_finish (result, &error);
if (!proxy) {
nm_log_warn (LOGD_SUPPLICANT,
"Failed to acquire wpa_supplicant proxy: Wi-Fi and 802.1x will not be available (%s)",
error->message);
g_clear_error (&error);
return;
}
self = NM_SUPPLICANT_MANAGER (user_data);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
priv->proxy = proxy;
g_signal_connect (priv->proxy, "notify::g-name-owner", G_CALLBACK (name_owner_cb), self);
name_owner_cb (priv->proxy, NULL, self);
}
