NetworkManager/src/supplicant/nm-supplicant-manager.c

614 lines
21 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2006 - 2010 Red Hat, Inc.
* Copyright (C) 2007 - 2008 Novell, Inc.
*/
#include "nm-default.h"
#include "nm-supplicant-manager.h"
#include "nm-supplicant-interface.h"
#include "nm-supplicant-types.h"
#include "nm-core-internal.h"
/*****************************************************************************/
typedef struct {
GDBusProxy * proxy;
GCancellable * cancellable;
gboolean running;
GSList *ifaces;
NMSupplicantFeature fast_support;
NMSupplicantFeature ap_support;
NMSupplicantFeature pmf_support;
NMSupplicantFeature fils_support;
NMSupplicantFeature p2p_support;
NMSupplicantFeature mesh_support;
NMSupplicantFeature wfd_support;
NMSupplicantFeature ft_support;
NMSupplicantFeature sha384_support;
guint die_count_reset_id;
guint die_count;
} NMSupplicantManagerPrivate;
struct _NMSupplicantManager {
GObject parent;
NMSupplicantManagerPrivate _priv;
};
struct _NMSupplicantManagerClass {
GObjectClass parent;
};
G_DEFINE_TYPE (NMSupplicantManager, nm_supplicant_manager, G_TYPE_OBJECT)
#define NM_SUPPLICANT_MANAGER_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMSupplicantManager, NM_IS_SUPPLICANT_MANAGER)
/*****************************************************************************/
#define _NMLOG_DOMAIN LOGD_SUPPLICANT
#define _NMLOG(level, ...) __NMLOG_DEFAULT (level, _NMLOG_DOMAIN, "supplicant", __VA_ARGS__)
/*****************************************************************************/
NM_CACHED_QUARK_FCN ("nm-supplicant-error-quark", nm_supplicant_error_quark)
/*****************************************************************************/
static gboolean
die_count_exceeded (guint32 count)
{
return count > 2;
}
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
_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_supplicant_wfd_ies_set (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
gs_unref_variant GVariant *result = NULL;
gs_free_error GError *error = NULL;
result = g_dbus_connection_call_finish (G_DBUS_CONNECTION (source_object), res, &error);
if (!result)
_LOGW ("failed to set WFD IEs on wpa_supplicant: %s", error->message);
}
/**
* nm_supplicant_manager_set_wfd_ies:
* @self: the #NMSupplicantManager
* @wfd_ies: a #GBytes with the WFD IEs or %NULL
*
* This function sets the global WFD IEs on wpa_supplicant. Note that
* it would make more sense if this was per-device, but wpa_supplicant
* simply does not work that way.
* */
void
nm_supplicant_manager_set_wfd_ies (NMSupplicantManager *self,
GBytes *wfd_ies)
{
NMSupplicantManagerPrivate *priv;
GVariantBuilder params;
GVariant *val;
g_return_if_fail (NM_IS_SUPPLICANT_MANAGER (self));
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
_LOGD ("setting WFD IEs for P2P operation");
if (wfd_ies)
val = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
g_bytes_get_data (wfd_ies, NULL),
g_bytes_get_size (wfd_ies),
sizeof (guint8));
else
val = g_variant_new_fixed_array (G_VARIANT_TYPE_BYTE,
NULL, 0, sizeof (guint8));
g_variant_builder_init (&params, G_VARIANT_TYPE ("(ssv)"));
g_variant_builder_add (&params, "s", g_dbus_proxy_get_interface_name (priv->proxy));
g_variant_builder_add (&params, "s", "WFDIEs");
g_variant_builder_add_value (&params, g_variant_new_variant (val));
g_dbus_connection_call (g_dbus_proxy_get_connection (priv->proxy),
g_dbus_proxy_get_name (priv->proxy),
g_dbus_proxy_get_object_path (priv->proxy),
"org.freedesktop.DBus.Properties",
"Set",
g_variant_builder_end (&params),
G_VARIANT_TYPE_UNIT,
G_DBUS_CALL_FLAGS_NO_AUTO_START,
1000,
NULL,
on_supplicant_wfd_ies_set,
NULL);
}
/**
* 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).
*
* Returns: (transfer full): returns a #NMSupplicantInterface or %NULL.
* Must be unrefed at the end.
* */
NMSupplicantInterface *
nm_supplicant_manager_create_interface (NMSupplicantManager *self,
const char *ifname,
NMSupplicantDriver driver)
{
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);
_LOGD ("(%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,
NULL,
driver,
priv->fast_support,
priv->ap_support,
priv->pmf_support,
priv->fils_support,
priv->p2p_support,
priv->mesh_support,
priv->wfd_support,
priv->ft_support,
priv->sha384_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;
}
/**
* nm_supplicant_manager_create_interface_from_path:
* @self: the #NMSupplicantManager
* @object_path: the DBus object path for which to obtain the supplicant interface
*
* 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).
*
* Returns: (transfer full): returns a #NMSupplicantInterface or %NULL.
* Must be unrefed at the end.
* */
NMSupplicantInterface *
nm_supplicant_manager_create_interface_from_path (NMSupplicantManager *self,
const char *object_path)
{
NMSupplicantManagerPrivate *priv;
NMSupplicantInterface *iface;
GSList *ifaces;
g_return_val_if_fail (NM_IS_SUPPLICANT_MANAGER (self), NULL);
g_return_val_if_fail (object_path != NULL, NULL);
priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
_LOGD ("creating new supplicant interface for dbus path %s", object_path);
/* assert against not requesting duplicate interfaces. */
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next) {
if (g_strcmp0 (nm_supplicant_interface_get_object_path (ifaces->data), object_path) == 0)
g_return_val_if_reached (NULL);
}
iface = nm_supplicant_interface_new (NULL,
object_path,
NM_SUPPLICANT_DRIVER_WIRELESS,
priv->fast_support,
priv->ap_support,
priv->pmf_support,
priv->fils_support,
priv->p2p_support,
priv->mesh_support,
priv->wfd_support,
priv->ft_support,
priv->sha384_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
update_capabilities (NMSupplicantManager *self)
{
NMSupplicantManagerPrivate *priv = NM_SUPPLICANT_MANAGER_GET_PRIVATE (self);
GSList *ifaces;
const char **array;
GVariant *value;
/* The supplicant only advertises global capabilities if the following
* commit has been applied:
*
* commit 1634ac0654eba8d458640a115efc0a6cde3bac4d
* Author: Dan Williams <dcbw@redhat.com>
* Date: Sat Sep 29 19:06:30 2012 +0300
*
* dbus: Add global capabilities property
*/
priv->ap_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->pmf_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->fils_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
/* Support for the following is newer than the capabilities property */
priv->p2p_support = NM_SUPPLICANT_FEATURE_NO;
priv->ft_support = NM_SUPPLICANT_FEATURE_NO;
priv->sha384_support = NM_SUPPLICANT_FEATURE_NO;
priv->mesh_support = NM_SUPPLICANT_FEATURE_NO;
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 = NM_SUPPLICANT_FEATURE_NO;
priv->pmf_support = NM_SUPPLICANT_FEATURE_NO;
priv->fils_support = NM_SUPPLICANT_FEATURE_NO;
priv->p2p_support = NM_SUPPLICANT_FEATURE_NO;
priv->ft_support = NM_SUPPLICANT_FEATURE_NO;
priv->sha384_support = NM_SUPPLICANT_FEATURE_NO;
priv->mesh_support = NM_SUPPLICANT_FEATURE_NO;
if (array) {
if (g_strv_contains (array, "ap"))
priv->ap_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "pmf"))
priv->pmf_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "fils"))
priv->fils_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "p2p"))
priv->p2p_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "ft"))
priv->ft_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "sha384"))
priv->sha384_support = NM_SUPPLICANT_FEATURE_YES;
if (g_strv_contains (array, "mesh"))
priv->mesh_support = NM_SUPPLICANT_FEATURE_YES;
g_free (array);
}
}
g_variant_unref (value);
}
/* Tell all interfaces about results of the AP/PMF/FILS/P2P/FT/SHA384 check */
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next) {
nm_supplicant_interface_set_ap_support (ifaces->data, priv->ap_support);
nm_supplicant_interface_set_pmf_support (ifaces->data, priv->pmf_support);
nm_supplicant_interface_set_fils_support (ifaces->data, priv->fils_support);
nm_supplicant_interface_set_p2p_support (ifaces->data, priv->p2p_support);
nm_supplicant_interface_set_ft_support (ifaces->data, priv->ft_support);
nm_supplicant_interface_set_sha384_support (ifaces->data, priv->sha384_support);
nm_supplicant_interface_set_mesh_support (ifaces->data, priv->mesh_support);
}
_LOGD ("AP mode is %ssupported",
(priv->ap_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->ap_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("PMF is %ssupported",
(priv->pmf_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->pmf_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("FILS is %ssupported",
(priv->fils_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->fils_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("P2P is %ssupported",
(priv->p2p_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->p2p_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("FT is %ssupported",
(priv->ft_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->ft_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("SHA384 is %ssupported",
(priv->sha384_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->sha384_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
_LOGD ("Mesh is %ssupported",
(priv->mesh_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->mesh_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
/* EAP-FAST */
priv->fast_support = NM_SUPPLICANT_FEATURE_NO;
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 (array) {
const char **a;
for (a = array; *a; a++) {
if (g_ascii_strcasecmp (*a, "FAST") == 0) {
priv->fast_support = NM_SUPPLICANT_FEATURE_YES;
break;
}
}
g_free (array);
}
}
g_variant_unref (value);
}
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next)
nm_supplicant_interface_set_fast_support (ifaces->data, priv->fast_support);
_LOGD ("EAP-FAST is %ssupported",
(priv->fast_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->fast_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
priv->wfd_support = NM_SUPPLICANT_FEATURE_NO;
value = g_dbus_proxy_get_cached_property (priv->proxy, "WFDIEs");
if (value) {
priv->wfd_support = NM_SUPPLICANT_FEATURE_YES;
g_variant_unref (value);
}
for (ifaces = priv->ifaces; ifaces; ifaces = ifaces->next)
nm_supplicant_interface_set_wfd_support (ifaces->data, priv->fast_support);
_LOGD ("WFD is %ssupported",
(priv->wfd_support == NM_SUPPLICANT_FEATURE_YES) ? "" :
(priv->wfd_support == NM_SUPPLICANT_FEATURE_NO) ? "not " : "possibly ");
}
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
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
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 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);
_LOGI ("wpa_supplicant die count reset");
return FALSE;
}
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);
_LOGI ("wpa_supplicant %s", owner ? "running" : "stopped");
if (owner) {
update_capabilities (self);
set_running (self, TRUE);
} 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)) {
_LOGI ("wpa_supplicant die count %d; ignoring for 10 seconds",
priv->die_count);
}
priv->ap_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->fast_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->pmf_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->fils_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->ft_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
priv->sha384_support = NM_SUPPLICANT_FEATURE_UNKNOWN;
set_running (self, FALSE);
}
g_free (owner);
}
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) {
_LOGW ("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);
}
/*****************************************************************************/
NM_DEFINE_SINGLETON_GETTER (NMSupplicantManager, nm_supplicant_manager_get, NM_TYPE_SUPPLICANT_MANAGER);
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
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);
nm_clear_g_cancellable (&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);
}
static void
nm_supplicant_manager_class_init (NMSupplicantManagerClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = dispose;
}