3812 lines
97 KiB
C
3812 lines
97 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2018-2019 Intel Corporation. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <errno.h>
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#include <time.h>
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#include <sys/time.h>
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#include <limits.h>
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#include <linux/if_ether.h>
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#include <ell/ell.h>
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#include "src/util.h"
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#include "src/iwd.h"
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#include "src/module.h"
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#include "src/common.h"
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#include "src/watchlist.h"
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#include "src/scan.h"
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#include "src/netdev.h"
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#include "src/dbus.h"
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#include "src/wiphy.h"
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#include "src/network.h"
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#include "src/knownnetworks.h"
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#include "src/ie.h"
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#include "src/handshake.h"
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#include "src/station.h"
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#include "src/blacklist.h"
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#include "src/mpdu.h"
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#include "src/erp.h"
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#include "src/netconfig.h"
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#include "src/anqp.h"
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#include "src/anqputil.h"
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#include "src/diagnostic.h"
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#include "src/frame-xchg.h"
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static struct l_queue *station_list;
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static uint32_t netdev_watch;
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static uint32_t mfp_setting;
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static uint32_t roam_retry_interval;
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static bool anqp_disabled;
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static bool netconfig_enabled;
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static struct watchlist anqp_watches;
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struct station {
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enum station_state state;
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struct watchlist state_watches;
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struct scan_bss *connected_bss;
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struct network *connected_network;
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struct scan_bss *connect_pending_bss;
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struct network *connect_pending_network;
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struct l_queue *autoconnect_list;
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struct l_queue *bss_list;
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struct l_queue *hidden_bss_list_sorted;
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struct l_hashmap *networks;
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struct l_queue *networks_sorted;
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struct l_dbus_message *connect_pending;
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struct l_dbus_message *hidden_pending;
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struct l_dbus_message *disconnect_pending;
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struct l_dbus_message *scan_pending;
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struct l_dbus_message *get_station_pending;
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struct signal_agent *signal_agent;
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uint32_t dbus_scan_id;
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uint32_t quick_scan_id;
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uint32_t hidden_network_scan_id;
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/* Roaming related members */
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struct timespec roam_min_time;
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struct l_timeout *roam_trigger_timeout;
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uint32_t roam_scan_id;
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uint8_t preauth_bssid[6];
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struct wiphy *wiphy;
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struct netdev *netdev;
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struct l_queue *anqp_pending;
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struct netconfig *netconfig;
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/* Set of frequencies to scan first when attempting a roam */
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struct scan_freq_set *roam_freqs;
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/* Frequencies split into subsets by priority */
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struct scan_freq_set *scan_freqs_order[3];
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unsigned int dbus_scan_subset_idx;
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bool preparing_roam : 1;
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bool roam_scan_full : 1;
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bool signal_low : 1;
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bool ap_directed_roaming : 1;
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bool scanning : 1;
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bool autoconnect : 1;
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};
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struct anqp_entry {
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struct station *station;
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struct network *network;
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uint32_t pending;
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};
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struct wiphy *station_get_wiphy(struct station *station)
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{
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return station->wiphy;
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}
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struct netdev *station_get_netdev(struct station *station)
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{
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return station->netdev;
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}
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struct network *station_get_connected_network(struct station *station)
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{
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return station->connected_network;
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}
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bool station_is_busy(struct station *station)
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{
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if (station->state != STATION_STATE_DISCONNECTED &&
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station->state != STATION_STATE_AUTOCONNECT_FULL &&
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station->state != STATION_STATE_AUTOCONNECT_QUICK)
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return true;
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return false;
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}
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static bool station_is_autoconnecting(struct station *station)
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{
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return station->state == STATION_STATE_AUTOCONNECT_FULL ||
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station->state == STATION_STATE_AUTOCONNECT_QUICK;
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}
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struct autoconnect_entry {
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uint16_t rank;
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struct network *network;
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struct scan_bss *bss;
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};
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static void station_property_set_scanning(struct station *station,
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bool scanning)
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{
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if (station->scanning == scanning)
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return;
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station->scanning = scanning;
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l_dbus_property_changed(dbus_get_bus(),
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netdev_get_path(station->netdev),
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IWD_STATION_INTERFACE, "Scanning");
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}
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static void station_enter_state(struct station *station,
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enum station_state state);
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static void station_autoconnect_next(struct station *station)
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{
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struct autoconnect_entry *entry;
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int r;
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while ((entry = l_queue_pop_head(station->autoconnect_list))) {
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l_debug("Considering autoconnecting to BSS '%s' with SSID: %s,"
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" freq: %u, rank: %u, strength: %i",
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util_address_to_string(entry->bss->addr),
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network_get_ssid(entry->network),
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entry->bss->frequency, entry->rank,
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entry->bss->signal_strength);
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if (blacklist_contains_bss(entry->bss->addr)) {
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l_free(entry);
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continue;
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}
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r = network_autoconnect(entry->network, entry->bss);
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l_free(entry);
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if (!r) {
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station_enter_state(station, STATION_STATE_CONNECTING);
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if (station->quick_scan_id) {
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scan_cancel(netdev_get_wdev_id(station->netdev),
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station->quick_scan_id);
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station->quick_scan_id = 0;
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station_property_set_scanning(station, false);
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}
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return;
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}
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}
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}
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static int autoconnect_rank_compare(const void *a, const void *b, void *user)
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{
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const struct autoconnect_entry *new_ae = a;
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const struct autoconnect_entry *ae = b;
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return (ae->rank > new_ae->rank) ? 1 : -1;
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}
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static void station_add_autoconnect_bss(struct station *station,
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struct network *network,
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struct scan_bss *bss)
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{
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double rankmod;
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struct autoconnect_entry *entry;
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/* See if network is autoconnectable (is a known network) */
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if (!network_rankmod(network, &rankmod))
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return;
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entry = l_new(struct autoconnect_entry, 1);
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entry->network = network;
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entry->bss = bss;
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entry->rank = bss->rank * rankmod;
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l_queue_insert(station->autoconnect_list, entry,
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autoconnect_rank_compare, NULL);
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}
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static void bss_free(void *data)
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{
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struct scan_bss *bss = data;
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scan_bss_free(bss);
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}
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static void network_free(void *data)
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{
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struct network *network = data;
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network_remove(network, -ESHUTDOWN);
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}
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static bool process_network(const void *key, void *data, void *user_data)
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{
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struct network *network = data;
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struct station *station = user_data;
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if (!network_bss_list_isempty(network)) {
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bool connected = network == station->connected_network;
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/* Build the network list ordered by rank */
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network_rank_update(network, connected);
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l_queue_insert(station->networks_sorted, network,
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network_rank_compare, NULL);
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return false;
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}
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/* Drop networks that have no more BSSs in range */
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l_debug("No remaining BSSs for SSID: %s -- Removing network",
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network_get_ssid(network));
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network_remove(network, -ERANGE);
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return true;
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}
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static const char *iwd_network_get_path(struct station *station,
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const char *ssid,
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enum security security)
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{
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static char path[256];
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unsigned int pos, i;
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pos = snprintf(path, sizeof(path), "%s/",
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netdev_get_path(station->netdev));
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for (i = 0; ssid[i] && pos < sizeof(path); i++)
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pos += snprintf(path + pos, sizeof(path) - pos, "%02x",
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ssid[i]);
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snprintf(path + pos, sizeof(path) - pos, "_%s",
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security_to_str(security));
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return path;
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}
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struct network *station_network_find(struct station *station, const char *ssid,
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enum security security)
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{
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const char *path = iwd_network_get_path(station, ssid, security);
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return l_hashmap_lookup(station->networks, path);
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}
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static int bss_signal_strength_compare(const void *a, const void *b, void *user)
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{
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const struct scan_bss *new_bss = a;
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const struct scan_bss *bss = b;
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return (bss->signal_strength > new_bss->signal_strength) ? 1 : -1;
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}
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/*
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* Returns the network object the BSS was added to or NULL if ignored.
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*/
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static struct network *station_add_seen_bss(struct station *station,
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struct scan_bss *bss)
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{
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struct network *network;
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struct ie_rsn_info info;
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int r;
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enum security security;
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const char *path;
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char ssid[33];
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l_debug("Processing BSS '%s' with SSID: %s, freq: %u, rank: %u, "
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"strength: %i",
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util_address_to_string(bss->addr),
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util_ssid_to_utf8(bss->ssid_len, bss->ssid),
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bss->frequency, bss->rank, bss->signal_strength);
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if (util_ssid_is_hidden(bss->ssid_len, bss->ssid)) {
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l_debug("BSS has hidden SSID");
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l_queue_insert(station->hidden_bss_list_sorted, bss,
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bss_signal_strength_compare, NULL);
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return NULL;
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}
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memcpy(ssid, bss->ssid, bss->ssid_len);
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ssid[bss->ssid_len] = '\0';
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if (!(bss->capability & IE_BSS_CAP_ESS)) {
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l_debug("Ignoring non-ESS BSS \"%s\"", ssid);
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return NULL;
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}
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memset(&info, 0, sizeof(info));
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r = scan_bss_get_rsn_info(bss, &info);
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if (r < 0) {
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if (r != -ENOENT)
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return NULL;
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security = security_determine(bss->capability, NULL);
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} else
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security = security_determine(bss->capability, &info);
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path = iwd_network_get_path(station, ssid, security);
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network = l_hashmap_lookup(station->networks, path);
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if (!network) {
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network = network_create(station, ssid, security);
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if (!network_register(network, path)) {
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network_remove(network, -EINVAL);
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return NULL;
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}
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l_hashmap_insert(station->networks,
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network_get_path(network), network);
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l_debug("Added new Network \"%s\" security %s",
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network_get_ssid(network), security_to_str(security));
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}
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network_bss_add(network, bss);
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return network;
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}
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static bool bss_match(const void *a, const void *b)
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{
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const struct scan_bss *bss_a = a;
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const struct scan_bss *bss_b = b;
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if (memcmp(bss_a->addr, bss_b->addr, sizeof(bss_a->addr)))
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return false;
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if (bss_a->ssid_len != bss_b->ssid_len)
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return false;
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return !memcmp(bss_a->ssid, bss_b->ssid, bss_a->ssid_len);
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}
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struct bss_expiration_data {
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struct scan_bss *connected_bss;
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uint64_t now;
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const struct scan_freq_set *freqs;
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};
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#define SCAN_RESULT_BSS_RETENTION_TIME (30 * 1000000)
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static bool bss_free_if_expired(void *data, void *user_data)
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{
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struct scan_bss *bss = data;
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struct bss_expiration_data *expiration_data = user_data;
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if (bss == expiration_data->connected_bss)
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/* Do not expire the currently connected BSS. */
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return false;
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/* Keep any BSSes that are not on the frequency list */
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if (!scan_freq_set_contains(expiration_data->freqs, bss->frequency))
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return false;
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if (l_time_before(expiration_data->now,
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bss->time_stamp + SCAN_RESULT_BSS_RETENTION_TIME))
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return false;
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bss_free(bss);
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return true;
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}
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static void station_bss_list_remove_expired_bsses(struct station *station,
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const struct scan_freq_set *freqs)
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{
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struct bss_expiration_data data = {
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.now = l_time_now(),
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.connected_bss = station->connected_bss,
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.freqs = freqs,
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};
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l_queue_foreach_remove(station->bss_list, bss_free_if_expired, &data);
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}
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struct nai_search {
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struct network *network;
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const char **realms;
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};
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static bool match_nai_realms(const struct network_info *info, void *user_data)
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{
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struct nai_search *search = user_data;
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if (!network_info_match_nai_realm(info, search->realms))
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return false;
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network_set_info(search->network, (struct network_info *) info);
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return true;
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}
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|
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static void network_add_foreach(struct network *network, void *user_data)
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{
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struct station *station = user_data;
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struct scan_bss *bss = network_bss_select(network, false);
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if (!bss)
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return;
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|
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station_add_autoconnect_bss(station, network, bss);
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}
|
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|
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static bool match_pending(const void *a, const void *b)
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{
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const struct anqp_entry *entry = a;
|
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|
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return entry->pending != 0;
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}
|
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|
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static void remove_anqp(void *data)
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{
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struct anqp_entry *entry = data;
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|
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if (entry->pending)
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anqp_cancel(entry->pending);
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|
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l_free(entry);
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}
|
|
|
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static bool anqp_entry_foreach(void *data, void *user_data)
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{
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struct anqp_entry *e = data;
|
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|
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WATCHLIST_NOTIFY(&anqp_watches, station_anqp_watch_func_t,
|
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STATION_ANQP_FINISHED, e->network);
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|
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remove_anqp(e);
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|
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return true;
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}
|
|
|
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static void station_anqp_response_cb(enum anqp_result result,
|
|
const void *anqp, size_t anqp_len,
|
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void *user_data)
|
|
{
|
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struct anqp_entry *entry = user_data;
|
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struct station *station = entry->station;
|
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struct network *network = entry->network;
|
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struct anqp_iter iter;
|
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uint16_t id;
|
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uint16_t len;
|
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const void *data;
|
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char **realms = NULL;
|
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struct nai_search search;
|
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|
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l_debug("");
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|
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if (result != ANQP_SUCCESS) {
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/* TODO: try next BSS */
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goto request_done;
|
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}
|
|
|
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anqp_iter_init(&iter, anqp, anqp_len);
|
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|
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while (anqp_iter_next(&iter, &id, &len, &data)) {
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switch (id) {
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case ANQP_NAI_REALM:
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if (realms)
|
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break;
|
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|
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realms = anqp_parse_nai_realms(data, len);
|
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if (!realms)
|
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goto request_done;
|
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|
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break;
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default:
|
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continue;
|
|
}
|
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}
|
|
|
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if (!realms)
|
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goto request_done;
|
|
|
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search.network = network;
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search.realms = (const char **)realms;
|
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|
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known_networks_foreach(match_nai_realms, &search);
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|
|
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l_strv_free(realms);
|
|
|
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request_done:
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entry->pending = 0;
|
|
|
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/* Return if there are other pending requests */
|
|
if (l_queue_find(station->anqp_pending, match_pending, NULL))
|
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return;
|
|
|
|
/* Notify all watchers now that every ANQP request has finished */
|
|
l_queue_foreach_remove(station->anqp_pending, anqp_entry_foreach, NULL);
|
|
|
|
l_queue_destroy(station->autoconnect_list, l_free);
|
|
station->autoconnect_list = l_queue_new();
|
|
|
|
if (station_is_autoconnecting(station)) {
|
|
station_network_foreach(station, network_add_foreach, station);
|
|
station_autoconnect_next(station);
|
|
}
|
|
}
|
|
|
|
static bool station_start_anqp(struct station *station, struct network *network,
|
|
struct scan_bss *bss)
|
|
{
|
|
uint8_t anqp[256];
|
|
uint8_t *ptr = anqp;
|
|
struct anqp_entry *entry;
|
|
|
|
if (!bss->hs20_capable)
|
|
return false;
|
|
|
|
/* Network already has ANQP data/HESSID */
|
|
if (network_get_info(network))
|
|
return false;
|
|
|
|
if (anqp_disabled) {
|
|
l_debug("Not querying AP for ANQP data (disabled)");
|
|
return false;
|
|
}
|
|
|
|
entry = l_new(struct anqp_entry, 1);
|
|
entry->station = station;
|
|
entry->network = network;
|
|
|
|
l_put_le16(ANQP_QUERY_LIST, ptr);
|
|
ptr += 2;
|
|
l_put_le16(2, ptr);
|
|
ptr += 2;
|
|
l_put_le16(ANQP_NAI_REALM, ptr);
|
|
ptr += 2;
|
|
l_put_le16(ANQP_VENDOR_SPECIFIC, ptr);
|
|
ptr += 2;
|
|
/* vendor length */
|
|
l_put_le16(7, ptr);
|
|
ptr += 2;
|
|
*ptr++ = 0x50;
|
|
*ptr++ = 0x6f;
|
|
*ptr++ = 0x9a;
|
|
*ptr++ = 0x11; /* HS20 ANQP Element type */
|
|
*ptr++ = ANQP_HS20_QUERY_LIST;
|
|
*ptr++ = 0; /* reserved */
|
|
*ptr++ = ANQP_HS20_OSU_PROVIDERS_NAI_LIST;
|
|
|
|
/*
|
|
* TODO: Additional roaming consortiums can be queried if indicated
|
|
* by the roaming consortium IE. The IE contains up to the first 3, and
|
|
* these are checked in hs20_find_settings_file.
|
|
*/
|
|
|
|
entry->pending = anqp_request(netdev_get_wdev_id(station->netdev),
|
|
netdev_get_address(station->netdev), bss, anqp,
|
|
ptr - anqp, station_anqp_response_cb,
|
|
entry, NULL);
|
|
if (!entry->pending) {
|
|
l_free(entry);
|
|
return false;
|
|
}
|
|
|
|
l_queue_push_head(station->anqp_pending, entry);
|
|
|
|
WATCHLIST_NOTIFY(&anqp_watches, station_anqp_watch_func_t,
|
|
STATION_ANQP_STARTED, network);
|
|
return true;
|
|
}
|
|
|
|
static bool bss_free_if_ssid_not_utf8(void *data, void *user_data)
|
|
{
|
|
struct scan_bss *bss = data;
|
|
|
|
if (util_ssid_is_hidden(bss->ssid_len, bss->ssid))
|
|
return false;
|
|
|
|
if (util_ssid_is_utf8(bss->ssid_len, bss->ssid))
|
|
return false;
|
|
|
|
l_debug("Dropping scan_bss '%s', with non-utf8 SSID",
|
|
util_address_to_string(bss->addr));
|
|
bss_free(bss);
|
|
return true;
|
|
}
|
|
|
|
/*
|
|
* Used when scan results were obtained; either from scan running
|
|
* inside station module or scans running in other state machines, e.g. wsc
|
|
*/
|
|
void station_set_scan_results(struct station *station,
|
|
struct l_queue *new_bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
bool add_to_autoconnect)
|
|
{
|
|
const struct l_queue_entry *bss_entry;
|
|
struct network *network;
|
|
bool wait_for_anqp = false;
|
|
|
|
l_queue_foreach_remove(new_bss_list, bss_free_if_ssid_not_utf8, NULL);
|
|
|
|
while ((network = l_queue_pop_head(station->networks_sorted)))
|
|
network_bss_list_clear(network);
|
|
|
|
l_queue_clear(station->hidden_bss_list_sorted, NULL);
|
|
|
|
l_queue_destroy(station->autoconnect_list, l_free);
|
|
station->autoconnect_list = l_queue_new();
|
|
|
|
station_bss_list_remove_expired_bsses(station, freqs);
|
|
|
|
for (bss_entry = l_queue_get_entries(station->bss_list); bss_entry;
|
|
bss_entry = bss_entry->next) {
|
|
struct scan_bss *old_bss = bss_entry->data;
|
|
struct scan_bss *new_bss;
|
|
|
|
new_bss = l_queue_find(new_bss_list, bss_match, old_bss);
|
|
if (new_bss) {
|
|
if (old_bss == station->connected_bss)
|
|
station->connected_bss = new_bss;
|
|
|
|
bss_free(old_bss);
|
|
|
|
continue;
|
|
}
|
|
|
|
if (old_bss == station->connected_bss) {
|
|
l_warn("Connected BSS not in scan results");
|
|
station->connected_bss->rank = 0;
|
|
}
|
|
|
|
l_queue_push_tail(new_bss_list, old_bss);
|
|
}
|
|
|
|
l_queue_destroy(station->bss_list, NULL);
|
|
|
|
for (bss_entry = l_queue_get_entries(new_bss_list); bss_entry;
|
|
bss_entry = bss_entry->next) {
|
|
struct scan_bss *bss = bss_entry->data;
|
|
struct network *network = station_add_seen_bss(station, bss);
|
|
|
|
if (!network)
|
|
continue;
|
|
|
|
if (station_start_anqp(station, network, bss))
|
|
wait_for_anqp = true;
|
|
}
|
|
|
|
station->bss_list = new_bss_list;
|
|
|
|
l_hashmap_foreach_remove(station->networks, process_network, station);
|
|
|
|
if (!wait_for_anqp && add_to_autoconnect) {
|
|
station_network_foreach(station, network_add_foreach, station);
|
|
station_autoconnect_next(station);
|
|
}
|
|
}
|
|
|
|
static void station_reconnect(struct station *station);
|
|
|
|
static void station_handshake_event(struct handshake_state *hs,
|
|
enum handshake_event event,
|
|
void *user_data, ...)
|
|
{
|
|
struct station *station = user_data;
|
|
struct network *network = station->connected_network;
|
|
va_list args;
|
|
|
|
va_start(args, user_data);
|
|
|
|
switch (event) {
|
|
case HANDSHAKE_EVENT_STARTED:
|
|
l_debug("Handshaking");
|
|
break;
|
|
case HANDSHAKE_EVENT_SETTING_KEYS:
|
|
l_debug("Setting keys");
|
|
|
|
/* If we got here, then our PSK works. Save if required */
|
|
network_sync_psk(network);
|
|
break;
|
|
case HANDSHAKE_EVENT_FAILED:
|
|
netdev_handshake_failed(hs, va_arg(args, int));
|
|
break;
|
|
case HANDSHAKE_EVENT_REKEY_FAILED:
|
|
l_warn("Unable to securely rekey on this hw/kernel...");
|
|
station_reconnect(station);
|
|
break;
|
|
case HANDSHAKE_EVENT_COMPLETE:
|
|
case HANDSHAKE_EVENT_SETTING_KEYS_FAILED:
|
|
case HANDSHAKE_EVENT_EAP_NOTIFY:
|
|
/*
|
|
* currently we don't care about any other events. The
|
|
* netdev_connect_cb will notify us when the connection is
|
|
* complete.
|
|
*/
|
|
break;
|
|
}
|
|
|
|
va_end(args);
|
|
}
|
|
|
|
static int station_build_handshake_rsn(struct handshake_state *hs,
|
|
struct wiphy *wiphy,
|
|
struct network *network,
|
|
struct scan_bss *bss)
|
|
{
|
|
enum security security = network_get_security(network);
|
|
bool add_mde = false;
|
|
bool fils_hint = false;
|
|
|
|
struct ie_rsn_info bss_info;
|
|
uint8_t rsne_buf[256];
|
|
struct ie_rsn_info info;
|
|
uint8_t *ap_ie;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
memset(&bss_info, 0, sizeof(bss_info));
|
|
scan_bss_get_rsn_info(bss, &bss_info);
|
|
|
|
if (bss_info.akm_suites & (IE_RSN_AKM_SUITE_FILS_SHA256 |
|
|
IE_RSN_AKM_SUITE_FILS_SHA384))
|
|
hs->support_fils = true;
|
|
|
|
/*
|
|
* If this network 8021x we might have a set of cached EAP keys. If so
|
|
* wiphy may select FILS if supported by the AP.
|
|
*/
|
|
if (security == SECURITY_8021X && hs->support_fils)
|
|
fils_hint = network_has_erp_identity(network);
|
|
|
|
info.akm_suites = wiphy_select_akm(wiphy, bss, fils_hint);
|
|
|
|
/*
|
|
* Special case for OWE. With OWE we still need to build up the
|
|
* handshake object with AKM/cipher info since OWE does the full 4-way
|
|
* handshake. But if this is a non-OWE open network, we can skip this.
|
|
*/
|
|
if (security == SECURITY_NONE &&
|
|
!(info.akm_suites & IE_RSN_AKM_SUITE_OWE))
|
|
goto open_network;
|
|
|
|
if (!info.akm_suites)
|
|
goto not_supported;
|
|
|
|
info.pairwise_ciphers = wiphy_select_cipher(wiphy,
|
|
bss_info.pairwise_ciphers);
|
|
info.group_cipher = wiphy_select_cipher(wiphy,
|
|
bss_info.group_cipher);
|
|
|
|
if (!info.pairwise_ciphers || !info.group_cipher)
|
|
goto not_supported;
|
|
|
|
/* Management frame protection is explicitly off for OSEN */
|
|
if (info.akm_suites & IE_RSN_AKM_SUITE_OSEN) {
|
|
info.group_management_cipher =
|
|
IE_RSN_CIPHER_SUITE_NO_GROUP_TRAFFIC;
|
|
goto build_ie;
|
|
}
|
|
|
|
switch (mfp_setting) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
info.group_management_cipher =
|
|
wiphy_select_cipher(wiphy,
|
|
bss_info.group_management_cipher);
|
|
info.mfpc = info.group_management_cipher != 0;
|
|
break;
|
|
case 2:
|
|
info.group_management_cipher =
|
|
wiphy_select_cipher(wiphy,
|
|
bss_info.group_management_cipher);
|
|
|
|
/*
|
|
* MFP required on our side, but AP doesn't support MFP
|
|
* or cipher mismatch
|
|
*/
|
|
if (info.group_management_cipher == 0)
|
|
goto not_supported;
|
|
|
|
info.mfpc = true;
|
|
info.mfpr = true;
|
|
break;
|
|
}
|
|
|
|
if (bss_info.mfpr && !info.mfpc)
|
|
goto not_supported;
|
|
|
|
build_ie:
|
|
/* RSN takes priority */
|
|
if (bss->rsne) {
|
|
ap_ie = bss->rsne;
|
|
ie_build_rsne(&info, rsne_buf);
|
|
} else if (bss->wpa) {
|
|
ap_ie = bss->wpa;
|
|
ie_build_wpa(&info, rsne_buf);
|
|
} else if (bss->osen) {
|
|
ap_ie = bss->osen;
|
|
ie_build_osen(&info, rsne_buf);
|
|
} else
|
|
goto not_supported;
|
|
|
|
if (!handshake_state_set_authenticator_ie(hs, ap_ie))
|
|
goto not_supported;
|
|
|
|
if (!handshake_state_set_supplicant_ie(hs, rsne_buf))
|
|
goto not_supported;
|
|
|
|
if (info.akm_suites & (IE_RSN_AKM_SUITE_FT_OVER_8021X |
|
|
IE_RSN_AKM_SUITE_FT_USING_PSK |
|
|
IE_RSN_AKM_SUITE_FT_OVER_SAE_SHA256 |
|
|
IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA256 |
|
|
IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA384))
|
|
add_mde = true;
|
|
|
|
open_network:
|
|
if (security == SECURITY_NONE)
|
|
/* Perform FT association if available */
|
|
add_mde = bss->mde_present;
|
|
|
|
if (add_mde) {
|
|
uint8_t mde[5];
|
|
|
|
/* The MDE advertised by the BSS must be passed verbatim */
|
|
mde[0] = IE_TYPE_MOBILITY_DOMAIN;
|
|
mde[1] = 3;
|
|
memcpy(mde + 2, bss->mde, 3);
|
|
|
|
handshake_state_set_mde(hs, mde);
|
|
}
|
|
|
|
return 0;
|
|
|
|
not_supported:
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
static struct handshake_state *station_handshake_setup(struct station *station,
|
|
struct network *network,
|
|
struct scan_bss *bss)
|
|
{
|
|
enum security security = network_get_security(network);
|
|
struct l_settings *settings = network_get_settings(network);
|
|
struct wiphy *wiphy = station->wiphy;
|
|
struct handshake_state *hs;
|
|
const char *ssid;
|
|
uint32_t eapol_proto_version;
|
|
const char *value;
|
|
bool full_random;
|
|
bool override = false;
|
|
uint8_t new_addr[ETH_ALEN];
|
|
|
|
hs = netdev_handshake_state_new(station->netdev);
|
|
|
|
handshake_state_set_event_func(hs, station_handshake_event, station);
|
|
|
|
if (station_build_handshake_rsn(hs, wiphy, network, bss) < 0)
|
|
goto not_supported;
|
|
|
|
ssid = network_get_ssid(network);
|
|
handshake_state_set_ssid(hs, (void *) ssid, strlen(ssid));
|
|
|
|
if (settings && l_settings_get_uint(settings, "EAPoL",
|
|
"ProtocolVersion",
|
|
&eapol_proto_version)) {
|
|
if (eapol_proto_version > 3) {
|
|
l_warn("Invalid ProtocolVersion value - should be 0-3");
|
|
eapol_proto_version = 0;
|
|
}
|
|
|
|
if (eapol_proto_version)
|
|
l_debug("Overriding EAPoL protocol version to: %u",
|
|
eapol_proto_version);
|
|
|
|
handshake_state_set_protocol_version(hs, eapol_proto_version);
|
|
}
|
|
|
|
if (security == SECURITY_PSK) {
|
|
/* SAE will generate/set the PMK */
|
|
if (IE_AKM_IS_SAE(hs->akm_suite)) {
|
|
const char *passphrase =
|
|
network_get_passphrase(network);
|
|
|
|
if (!passphrase)
|
|
goto no_psk;
|
|
|
|
handshake_state_set_passphrase(hs, passphrase);
|
|
} else {
|
|
const uint8_t *psk = network_get_psk(network);
|
|
|
|
if (!psk)
|
|
goto no_psk;
|
|
|
|
handshake_state_set_pmk(hs, psk, 32);
|
|
}
|
|
} else if (security == SECURITY_8021X)
|
|
handshake_state_set_8021x_config(hs,
|
|
network_get_settings(network));
|
|
|
|
/*
|
|
* If FILS was chosen, the ERP cache has been verified to exist. We
|
|
* wait to get it until here because at this point so there are no
|
|
* failure paths before fils_sm_new
|
|
*/
|
|
if (hs->akm_suite & (IE_RSN_AKM_SUITE_FILS_SHA256 |
|
|
IE_RSN_AKM_SUITE_FILS_SHA384 |
|
|
IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA256 |
|
|
IE_RSN_AKM_SUITE_FT_OVER_FILS_SHA384))
|
|
hs->erp_cache = erp_cache_get(network_get_ssid(network));
|
|
|
|
/*
|
|
* We have three possible options here:
|
|
* 1. per-network MAC generation (default, no option in network config)
|
|
* 2. per-network full MAC randomization
|
|
* 3. per-network MAC override
|
|
*/
|
|
|
|
if (!l_settings_get_bool(settings, "Settings",
|
|
"AlwaysRandomizeAddress",
|
|
&full_random))
|
|
full_random = false;
|
|
|
|
value = l_settings_get_value(settings, "Settings",
|
|
"AddressOverride");
|
|
if (value) {
|
|
if (util_string_to_address(value, new_addr) &&
|
|
util_is_valid_sta_address(new_addr))
|
|
override = true;
|
|
else
|
|
l_warn("[Network].AddressOverride is not a valid "
|
|
"MAC address");
|
|
}
|
|
|
|
if (override && full_random) {
|
|
l_warn("Cannot use both AlwaysRandomizeAddress and "
|
|
"AddressOverride concurrently, defaulting to override");
|
|
full_random = false;
|
|
}
|
|
|
|
if (override)
|
|
handshake_state_set_supplicant_address(hs, new_addr);
|
|
else if (full_random) {
|
|
wiphy_generate_random_address(wiphy, new_addr);
|
|
handshake_state_set_supplicant_address(hs, new_addr);
|
|
}
|
|
|
|
return hs;
|
|
|
|
no_psk:
|
|
l_warn("Missing network PSK/passphrase");
|
|
not_supported:
|
|
handshake_state_free(hs);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bool new_scan_results(int err, struct l_queue *bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
bool autoconnect;
|
|
|
|
station_property_set_scanning(station, false);
|
|
|
|
if (err)
|
|
return false;
|
|
|
|
autoconnect = station_is_autoconnecting(station);
|
|
station_set_scan_results(station, bss_list, freqs, autoconnect);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void periodic_scan_trigger(int err, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
station_property_set_scanning(station, true);
|
|
}
|
|
|
|
static void periodic_scan_stop(struct station *station)
|
|
{
|
|
uint64_t id = netdev_get_wdev_id(station->netdev);
|
|
|
|
if (scan_periodic_stop(id))
|
|
station_property_set_scanning(station, false);
|
|
}
|
|
|
|
static bool station_needs_hidden_network_scan(struct station *station)
|
|
{
|
|
if (!known_networks_has_hidden())
|
|
return false;
|
|
|
|
if (station_is_autoconnecting(station))
|
|
return true;
|
|
|
|
return !l_queue_isempty(station->hidden_bss_list_sorted);
|
|
}
|
|
|
|
static uint32_t station_scan_trigger(struct station *station,
|
|
struct scan_freq_set *freqs,
|
|
scan_trigger_func_t triggered,
|
|
scan_notify_func_t notify,
|
|
scan_destroy_func_t destroy)
|
|
{
|
|
uint64_t id = netdev_get_wdev_id(station->netdev);
|
|
struct scan_parameters params;
|
|
|
|
memset(¶ms, 0, sizeof(params));
|
|
params.flush = true;
|
|
params.freqs = freqs;
|
|
|
|
if (wiphy_can_randomize_mac_addr(station->wiphy) ||
|
|
station->connected_bss ||
|
|
station_needs_hidden_network_scan(station)) {
|
|
/* If we're connected, HW cannot randomize our MAC */
|
|
if (!station->connected_bss)
|
|
params.randomize_mac_addr_hint = true;
|
|
|
|
return scan_active_full(id, ¶ms, triggered, notify,
|
|
station, destroy);
|
|
}
|
|
|
|
return scan_passive_full(id, ¶ms, triggered, notify,
|
|
station, destroy);
|
|
}
|
|
|
|
static bool station_quick_scan_results(int err, struct l_queue *bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
bool autoconnect;
|
|
|
|
station_property_set_scanning(station, false);
|
|
|
|
if (err)
|
|
goto done;
|
|
|
|
autoconnect = station_is_autoconnecting(station);
|
|
station_set_scan_results(station, bss_list, freqs, autoconnect);
|
|
|
|
done:
|
|
if (station->state == STATION_STATE_AUTOCONNECT_QUICK)
|
|
/*
|
|
* If we're still in AUTOCONNECT_QUICK state, then autoconnect
|
|
* failed to find any candidates. Transition to AUTOCONNECT_FULL
|
|
*/
|
|
station_enter_state(station, STATION_STATE_AUTOCONNECT_FULL);
|
|
|
|
return err == 0;
|
|
}
|
|
|
|
static void station_quick_scan_triggered(int err, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
if (err < 0) {
|
|
l_debug("Quick scan trigger failed: %i", err);
|
|
|
|
station_enter_state(station, STATION_STATE_AUTOCONNECT_FULL);
|
|
|
|
return;
|
|
}
|
|
|
|
l_debug("Quick scan triggered for %s",
|
|
netdev_get_name(station->netdev));
|
|
|
|
station_property_set_scanning(station, true);
|
|
}
|
|
|
|
static void station_quick_scan_destroy(void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
|
|
station->quick_scan_id = 0;
|
|
}
|
|
|
|
static int station_quick_scan_trigger(struct station *station)
|
|
{
|
|
struct scan_freq_set *known_freq_set;
|
|
|
|
known_freq_set = known_networks_get_recent_frequencies(5);
|
|
if (!known_freq_set)
|
|
return -ENODATA;
|
|
|
|
if (!wiphy_constrain_freq_set(station->wiphy, known_freq_set)) {
|
|
scan_freq_set_free(known_freq_set);
|
|
return -ENOTSUP;
|
|
}
|
|
|
|
station->quick_scan_id = station_scan_trigger(station,
|
|
known_freq_set,
|
|
station_quick_scan_triggered,
|
|
station_quick_scan_results,
|
|
station_quick_scan_destroy);
|
|
scan_freq_set_free(known_freq_set);
|
|
|
|
if (!station->quick_scan_id)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const char *station_state_to_string(enum station_state state)
|
|
{
|
|
switch (state) {
|
|
case STATION_STATE_DISCONNECTED:
|
|
return "disconnected";
|
|
case STATION_STATE_AUTOCONNECT_QUICK:
|
|
return "autoconnect_quick";
|
|
case STATION_STATE_AUTOCONNECT_FULL:
|
|
return "autoconnect_full";
|
|
case STATION_STATE_CONNECTING:
|
|
return "connecting";
|
|
case STATION_STATE_CONNECTED:
|
|
return "connected";
|
|
case STATION_STATE_DISCONNECTING:
|
|
return "disconnecting";
|
|
case STATION_STATE_ROAMING:
|
|
return "roaming";
|
|
}
|
|
|
|
return "invalid";
|
|
}
|
|
|
|
static void station_enter_state(struct station *station,
|
|
enum station_state state)
|
|
{
|
|
uint64_t id = netdev_get_wdev_id(station->netdev);
|
|
struct l_dbus *dbus = dbus_get_bus();
|
|
bool disconnected;
|
|
|
|
l_debug("Old State: %s, new state: %s",
|
|
station_state_to_string(station->state),
|
|
station_state_to_string(state));
|
|
|
|
disconnected = !station_is_busy(station);
|
|
|
|
if ((disconnected && state > STATION_STATE_AUTOCONNECT_FULL) ||
|
|
(!disconnected && state != station->state))
|
|
l_dbus_property_changed(dbus, netdev_get_path(station->netdev),
|
|
IWD_STATION_INTERFACE, "State");
|
|
|
|
station->state = state;
|
|
|
|
switch (state) {
|
|
case STATION_STATE_AUTOCONNECT_QUICK:
|
|
if (!station_quick_scan_trigger(station))
|
|
break;
|
|
|
|
station->state = STATION_STATE_AUTOCONNECT_FULL;
|
|
/* Fall through */
|
|
case STATION_STATE_AUTOCONNECT_FULL:
|
|
scan_periodic_start(id, periodic_scan_trigger,
|
|
new_scan_results, station);
|
|
break;
|
|
case STATION_STATE_CONNECTING:
|
|
/* Refresh the ordered network list */
|
|
network_rank_update(station->connected_network, true);
|
|
l_queue_remove(station->networks_sorted, station->connected_network);
|
|
l_queue_insert(station->networks_sorted, station->connected_network,
|
|
network_rank_compare, NULL);
|
|
|
|
l_dbus_property_changed(dbus, netdev_get_path(station->netdev),
|
|
IWD_STATION_INTERFACE, "ConnectedNetwork");
|
|
l_dbus_property_changed(dbus,
|
|
network_get_path(station->connected_network),
|
|
IWD_NETWORK_INTERFACE, "Connected");
|
|
|
|
periodic_scan_stop(station);
|
|
break;
|
|
case STATION_STATE_DISCONNECTED:
|
|
periodic_scan_stop(station);
|
|
break;
|
|
case STATION_STATE_CONNECTED:
|
|
l_dbus_object_add_interface(dbus,
|
|
netdev_get_path(station->netdev),
|
|
IWD_STATION_DIAGNOSTIC_INTERFACE,
|
|
station);
|
|
periodic_scan_stop(station);
|
|
break;
|
|
case STATION_STATE_DISCONNECTING:
|
|
l_dbus_object_remove_interface(dbus_get_bus(),
|
|
netdev_get_path(station->netdev),
|
|
IWD_STATION_DIAGNOSTIC_INTERFACE);
|
|
break;
|
|
case STATION_STATE_ROAMING:
|
|
break;
|
|
}
|
|
|
|
WATCHLIST_NOTIFY(&station->state_watches,
|
|
station_state_watch_func_t, station->state);
|
|
}
|
|
|
|
enum station_state station_get_state(struct station *station)
|
|
{
|
|
return station->state;
|
|
}
|
|
|
|
uint32_t station_add_state_watch(struct station *station,
|
|
station_state_watch_func_t func,
|
|
void *user_data,
|
|
station_destroy_func_t destroy)
|
|
{
|
|
return watchlist_add(&station->state_watches, func, user_data, destroy);
|
|
}
|
|
|
|
bool station_remove_state_watch(struct station *station, uint32_t id)
|
|
{
|
|
return watchlist_remove(&station->state_watches, id);
|
|
}
|
|
|
|
uint32_t station_add_anqp_watch(station_anqp_watch_func_t func,
|
|
void *user_data,
|
|
station_destroy_func_t destroy)
|
|
{
|
|
return watchlist_add(&anqp_watches, func, user_data, destroy);
|
|
}
|
|
|
|
void station_remove_anqp_watch(uint32_t id)
|
|
{
|
|
watchlist_remove(&anqp_watches, id);
|
|
}
|
|
|
|
bool station_set_autoconnect(struct station *station, bool autoconnect)
|
|
{
|
|
if (station->autoconnect == autoconnect)
|
|
return true;
|
|
|
|
station->autoconnect = autoconnect;
|
|
|
|
if (station->state == STATION_STATE_DISCONNECTED && autoconnect)
|
|
station_enter_state(station, STATION_STATE_AUTOCONNECT_QUICK);
|
|
|
|
if (station_is_autoconnecting(station) && !autoconnect)
|
|
station_enter_state(station, STATION_STATE_DISCONNECTED);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void station_roam_state_clear(struct station *station)
|
|
{
|
|
l_timeout_remove(station->roam_trigger_timeout);
|
|
station->roam_trigger_timeout = NULL;
|
|
station->preparing_roam = false;
|
|
station->roam_scan_full = false;
|
|
station->signal_low = false;
|
|
station->roam_min_time.tv_sec = 0;
|
|
|
|
if (station->roam_scan_id)
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->roam_scan_id);
|
|
|
|
if (station->roam_freqs) {
|
|
scan_freq_set_free(station->roam_freqs);
|
|
station->roam_freqs = NULL;
|
|
}
|
|
}
|
|
|
|
static void station_reset_connection_state(struct station *station)
|
|
{
|
|
struct network *network = station->connected_network;
|
|
struct l_dbus *dbus = dbus_get_bus();
|
|
|
|
if (!network)
|
|
return;
|
|
|
|
if (station->state == STATION_STATE_CONNECTED ||
|
|
station->state == STATION_STATE_CONNECTING ||
|
|
station->state == STATION_STATE_ROAMING)
|
|
network_disconnected(network);
|
|
|
|
station_roam_state_clear(station);
|
|
|
|
/* Refresh the ordered network list */
|
|
network_rank_update(station->connected_network, false);
|
|
l_queue_remove(station->networks_sorted, station->connected_network);
|
|
l_queue_insert(station->networks_sorted, station->connected_network,
|
|
network_rank_compare, NULL);
|
|
|
|
station->connected_bss = NULL;
|
|
station->connected_network = NULL;
|
|
|
|
l_dbus_property_changed(dbus, netdev_get_path(station->netdev),
|
|
IWD_STATION_INTERFACE, "ConnectedNetwork");
|
|
l_dbus_property_changed(dbus, network_get_path(network),
|
|
IWD_NETWORK_INTERFACE, "Connected");
|
|
}
|
|
|
|
static void station_disassociated(struct station *station)
|
|
{
|
|
l_debug("%u", netdev_get_ifindex(station->netdev));
|
|
|
|
if (station->netconfig)
|
|
netconfig_reset(station->netconfig);
|
|
|
|
station_reset_connection_state(station);
|
|
|
|
station_enter_state(station, STATION_STATE_DISCONNECTED);
|
|
|
|
if (station->autoconnect)
|
|
station_enter_state(station, STATION_STATE_AUTOCONNECT_QUICK);
|
|
}
|
|
|
|
static void station_connect_cb(struct netdev *netdev, enum netdev_result result,
|
|
void *event_data, void *user_data);
|
|
|
|
static void station_disconnect_event(struct station *station, void *event_data)
|
|
{
|
|
l_debug("%u", netdev_get_ifindex(station->netdev));
|
|
|
|
if (station->connect_pending)
|
|
station_connect_cb(station->netdev,
|
|
NETDEV_RESULT_HANDSHAKE_FAILED,
|
|
event_data, station);
|
|
else
|
|
station_disassociated(station);
|
|
}
|
|
|
|
static void station_roam_timeout_rearm(struct station *station, int seconds);
|
|
static int station_roam_scan(struct station *station,
|
|
struct scan_freq_set *freq_set);
|
|
|
|
static uint32_t station_freq_from_neighbor_report(const uint8_t *country,
|
|
struct ie_neighbor_report_info *info, enum scan_band *out_band)
|
|
{
|
|
enum scan_band band;
|
|
uint32_t freq;
|
|
|
|
if (info->oper_class == 0) {
|
|
/*
|
|
* Some Cisco APs report all operating class values as 0
|
|
* in the Neighbor Report Responses. Work around this by
|
|
* using the most likely operating class for the channel
|
|
* number as the 2.4GHz and 5GHz bands happen to mostly
|
|
* use channels in two disjoint ranges.
|
|
*/
|
|
if (info->channel_num >= 1 && info->channel_num <= 14)
|
|
band = SCAN_BAND_2_4_GHZ;
|
|
else if (info->channel_num >= 36 && info->channel_num <= 169)
|
|
band = SCAN_BAND_5_GHZ;
|
|
else {
|
|
l_debug("Ignored: 0 oper class with an unusual "
|
|
"channel number");
|
|
|
|
return 0;
|
|
}
|
|
} else {
|
|
band = scan_oper_class_to_band(country, info->oper_class);
|
|
if (!band) {
|
|
l_debug("Ignored: unsupported oper class");
|
|
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
freq = scan_channel_to_freq(info->channel_num, band);
|
|
if (!freq) {
|
|
l_debug("Ignored: unsupported channel");
|
|
|
|
return 0;
|
|
}
|
|
|
|
if (out_band)
|
|
*out_band = band;
|
|
|
|
return freq;
|
|
}
|
|
|
|
static void parse_neighbor_report(struct station *station,
|
|
const uint8_t *reports,
|
|
size_t reports_len,
|
|
struct scan_freq_set **set)
|
|
{
|
|
struct ie_tlv_iter iter;
|
|
int count_md = 0, count_no_md = 0;
|
|
struct scan_freq_set *freq_set_md, *freq_set_no_md;
|
|
uint32_t current_freq = 0;
|
|
struct handshake_state *hs = netdev_get_handshake(station->netdev);
|
|
|
|
freq_set_md = scan_freq_set_new();
|
|
freq_set_no_md = scan_freq_set_new();
|
|
|
|
ie_tlv_iter_init(&iter, reports, reports_len);
|
|
|
|
/* First see if any of the reports contain the MD bit set */
|
|
while (ie_tlv_iter_next(&iter)) {
|
|
struct ie_neighbor_report_info info;
|
|
uint32_t freq;
|
|
enum scan_band band;
|
|
const uint8_t *cc = NULL;
|
|
|
|
if (ie_tlv_iter_get_tag(&iter) != IE_TYPE_NEIGHBOR_REPORT)
|
|
continue;
|
|
|
|
if (ie_parse_neighbor_report(&iter, &info) < 0)
|
|
continue;
|
|
|
|
l_debug("Neighbor report received for %s: ch %i "
|
|
"(oper class %i), %s",
|
|
util_address_to_string(info.addr),
|
|
(int) info.channel_num, (int) info.oper_class,
|
|
info.md ? "MD set" : "MD not set");
|
|
|
|
if (station->connected_bss->cc_present)
|
|
cc = station->connected_bss->cc;
|
|
|
|
freq = station_freq_from_neighbor_report(cc, &info, &band);
|
|
if (!freq)
|
|
continue;
|
|
|
|
/* Skip if the band is not supported */
|
|
if (!(band & wiphy_get_supported_bands(station->wiphy)))
|
|
continue;
|
|
|
|
if (!memcmp(info.addr,
|
|
station->connected_bss->addr, ETH_ALEN)) {
|
|
/*
|
|
* If this report is for the current AP, don't add
|
|
* it to any of the lists yet. We will need to scan
|
|
* its channel because it may still be the best ranked
|
|
* or the only visible AP.
|
|
*/
|
|
current_freq = freq;
|
|
|
|
continue;
|
|
}
|
|
|
|
/* Add the frequency to one of the lists */
|
|
if (info.md && hs->mde) {
|
|
scan_freq_set_add(freq_set_md, freq);
|
|
|
|
count_md += 1;
|
|
} else {
|
|
scan_freq_set_add(freq_set_no_md, freq);
|
|
|
|
count_no_md += 1;
|
|
}
|
|
}
|
|
|
|
if (!current_freq)
|
|
current_freq = station->connected_bss->frequency;
|
|
|
|
/*
|
|
* If there are neighbor reports with the MD bit set then the bit
|
|
* is probably valid so scan only the frequencies of the neighbors
|
|
* with that bit set, which will allow us to use Fast Transition.
|
|
* Some APs, such as those based on hostapd do not set the MD bit
|
|
* even if the neighbor is within the MD.
|
|
*
|
|
* In any case we only select the frequencies here and will check
|
|
* the IEs in the scan results as the authoritative information
|
|
* on whether we can use Fast Transition, and rank BSSes based on
|
|
* that.
|
|
*
|
|
* TODO: possibly save the neighbors from outside the MD and if
|
|
* none of the ones in the MD end up working, try a non-FT
|
|
* transition to those neighbors. We should be using a
|
|
* blacklisting mechanism (for both initial connection and
|
|
* transitions) so that cound_md would not count the
|
|
* BSSes already used and when it goes down to 0 we'd
|
|
* automatically fall back to the non-FT candidates and then to
|
|
* full scan.
|
|
*/
|
|
if (count_md) {
|
|
scan_freq_set_add(freq_set_md, current_freq);
|
|
*set = freq_set_md;
|
|
scan_freq_set_free(freq_set_no_md);
|
|
} else if (count_no_md) {
|
|
scan_freq_set_add(freq_set_no_md, current_freq);
|
|
*set = freq_set_no_md;
|
|
scan_freq_set_free(freq_set_md);
|
|
} else {
|
|
scan_freq_set_free(freq_set_no_md);
|
|
scan_freq_set_free(freq_set_md);
|
|
*set = NULL;
|
|
}
|
|
}
|
|
|
|
static void station_early_neighbor_report_cb(struct netdev *netdev, int err,
|
|
const uint8_t *reports,
|
|
size_t reports_len,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("ifindex: %u, error: %d(%s)",
|
|
netdev_get_ifindex(station->netdev),
|
|
err, err < 0 ? strerror(-err) : "");
|
|
|
|
if (!reports || err)
|
|
return;
|
|
|
|
parse_neighbor_report(station, reports, reports_len,
|
|
&station->roam_freqs);
|
|
}
|
|
|
|
static void station_roamed(struct station *station)
|
|
{
|
|
station->roam_scan_full = false;
|
|
|
|
/*
|
|
* Schedule another roaming attempt in case the signal continues to
|
|
* remain low. A subsequent high signal notification will cancel it.
|
|
*/
|
|
if (station->signal_low)
|
|
station_roam_timeout_rearm(station, roam_retry_interval);
|
|
|
|
if (station->netconfig)
|
|
netconfig_reconfigure(station->netconfig);
|
|
|
|
if (station->roam_freqs) {
|
|
scan_freq_set_free(station->roam_freqs);
|
|
station->roam_freqs = NULL;
|
|
}
|
|
|
|
if (station->connected_bss->cap_rm_neighbor_report) {
|
|
if (netdev_neighbor_report_req(station->netdev,
|
|
station_early_neighbor_report_cb) < 0)
|
|
l_warn("Could not request neighbor report");
|
|
}
|
|
|
|
station_enter_state(station, STATION_STATE_CONNECTED);
|
|
}
|
|
|
|
static void station_roam_failed(struct station *station)
|
|
{
|
|
l_debug("%u", netdev_get_ifindex(station->netdev));
|
|
|
|
/*
|
|
* If we attempted a reassociation or a fast transition, and ended up
|
|
* here then we are now disconnected.
|
|
*/
|
|
if (station->state == STATION_STATE_ROAMING) {
|
|
station_disassociated(station);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* We were told by the AP to roam, but failed. Try ourselves or
|
|
* wait for the AP to tell us to roam again
|
|
*/
|
|
if (station->ap_directed_roaming)
|
|
goto delayed_retry;
|
|
|
|
/*
|
|
* If we tried a limited scan, failed and the signal is still low,
|
|
* repeat with a full scan right away
|
|
*/
|
|
if (station->signal_low && !station->roam_scan_full) {
|
|
/*
|
|
* Since we're re-using roam_scan_id, explicitly cancel
|
|
* the scan here, so that the destroy callback is not called
|
|
* after the return of this function
|
|
*/
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->roam_scan_id);
|
|
|
|
if (!station_roam_scan(station, NULL))
|
|
return;
|
|
}
|
|
|
|
delayed_retry:
|
|
/*
|
|
* If we're still connected to the old BSS, only clear preparing_roam
|
|
* and reattempt in 60 seconds if signal level is still low at that
|
|
* time.
|
|
*/
|
|
station->preparing_roam = false;
|
|
station->roam_scan_full = false;
|
|
station->ap_directed_roaming = false;
|
|
|
|
if (station->signal_low)
|
|
station_roam_timeout_rearm(station, roam_retry_interval);
|
|
}
|
|
|
|
static void station_netconfig_event_handler(enum netconfig_event event,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
switch (event) {
|
|
case NETCONFIG_EVENT_CONNECTED:
|
|
station_enter_state(station, STATION_STATE_CONNECTED);
|
|
|
|
break;
|
|
default:
|
|
l_error("station: Unsupported netconfig event: %d.", event);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void station_reassociate_cb(struct netdev *netdev,
|
|
enum netdev_result result,
|
|
void *event_data,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("%u, result: %d", netdev_get_ifindex(station->netdev), result);
|
|
|
|
if (station->state != STATION_STATE_ROAMING)
|
|
return;
|
|
|
|
if (result == NETDEV_RESULT_OK)
|
|
station_roamed(station);
|
|
else
|
|
station_roam_failed(station);
|
|
}
|
|
|
|
static void station_fast_transition_cb(struct netdev *netdev,
|
|
enum netdev_result result,
|
|
void *event_data,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("%u, result: %d", netdev_get_ifindex(station->netdev), result);
|
|
|
|
if (station->state != STATION_STATE_ROAMING)
|
|
return;
|
|
|
|
if (result == NETDEV_RESULT_OK)
|
|
station_roamed(station);
|
|
else
|
|
station_roam_failed(station);
|
|
}
|
|
|
|
static void station_netdev_event(struct netdev *netdev, enum netdev_event event,
|
|
void *event_data, void *user_data);
|
|
|
|
static void station_transition_reassociate(struct station *station,
|
|
struct scan_bss *bss,
|
|
struct handshake_state *new_hs)
|
|
{
|
|
if (netdev_reassociate(station->netdev, bss, station->connected_bss,
|
|
new_hs, station_netdev_event,
|
|
station_reassociate_cb, station) < 0) {
|
|
handshake_state_free(new_hs);
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
station->connected_bss = bss;
|
|
station->preparing_roam = false;
|
|
station_enter_state(station, STATION_STATE_ROAMING);
|
|
}
|
|
|
|
static bool bss_match_bssid(const void *a, const void *b)
|
|
{
|
|
const struct scan_bss *bss = a;
|
|
const uint8_t *bssid = b;
|
|
|
|
return !memcmp(bss->addr, bssid, sizeof(bss->addr));
|
|
}
|
|
|
|
static void station_preauthenticate_cb(struct netdev *netdev,
|
|
enum netdev_result result,
|
|
const uint8_t *pmk, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct network *connected = station->connected_network;
|
|
struct scan_bss *bss;
|
|
struct handshake_state *new_hs;
|
|
|
|
l_debug("%u, result: %d", netdev_get_ifindex(station->netdev), result);
|
|
|
|
if (!station->preparing_roam || result == NETDEV_RESULT_ABORTED)
|
|
return;
|
|
|
|
bss = l_queue_find(station->bss_list, bss_match_bssid,
|
|
station->preauth_bssid);
|
|
if (!bss) {
|
|
l_error("Roam target BSS not found");
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
new_hs = station_handshake_setup(station, connected, bss);
|
|
if (!new_hs) {
|
|
l_error("station_handshake_setup failed");
|
|
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
if (result == NETDEV_RESULT_OK) {
|
|
uint8_t pmkid[16];
|
|
uint8_t rsne_buf[300];
|
|
struct ie_rsn_info rsn_info;
|
|
|
|
handshake_state_set_pmk(new_hs, pmk, 32);
|
|
handshake_state_set_authenticator_address(new_hs,
|
|
station->preauth_bssid);
|
|
handshake_state_set_supplicant_address(new_hs,
|
|
netdev_get_address(station->netdev));
|
|
|
|
/*
|
|
* Rebuild the RSNE to include the negotiated PMKID. Note
|
|
* supplicant_ie can't be a WPA IE here, including because
|
|
* the WPA IE doesn't have a capabilities field and
|
|
* target_rsne->preauthentication would have been false in
|
|
* station_transition_start.
|
|
*/
|
|
ie_parse_rsne_from_data(new_hs->supplicant_ie,
|
|
new_hs->supplicant_ie[1] + 2,
|
|
&rsn_info);
|
|
|
|
handshake_state_get_pmkid(new_hs, pmkid);
|
|
|
|
rsn_info.num_pmkids = 1;
|
|
rsn_info.pmkids = pmkid;
|
|
|
|
ie_build_rsne(&rsn_info, rsne_buf);
|
|
handshake_state_set_supplicant_ie(new_hs, rsne_buf);
|
|
}
|
|
|
|
station_transition_reassociate(station, bss, new_hs);
|
|
}
|
|
|
|
static void station_transition_start(struct station *station,
|
|
struct scan_bss *bss)
|
|
{
|
|
struct handshake_state *hs = netdev_get_handshake(station->netdev);
|
|
struct network *connected = station->connected_network;
|
|
enum security security = network_get_security(connected);
|
|
uint16_t mdid;
|
|
struct handshake_state *new_hs;
|
|
struct ie_rsn_info cur_rsne, target_rsne;
|
|
|
|
l_debug("%u, target %s", netdev_get_ifindex(station->netdev),
|
|
util_address_to_string(bss->addr));
|
|
|
|
/* Reset AP roam flag, at this point the roaming behaves the same */
|
|
station->ap_directed_roaming = false;
|
|
|
|
if (hs->mde)
|
|
ie_parse_mobility_domain_from_data(hs->mde, hs->mde[1] + 2,
|
|
&mdid, NULL, NULL);
|
|
|
|
/* Can we use Fast Transition? */
|
|
if (hs->mde && bss->mde_present && l_get_le16(bss->mde) == mdid) {
|
|
/* Rebuild handshake RSN for target AP */
|
|
if (station_build_handshake_rsn(hs, station->wiphy,
|
|
station->connected_network, bss) < 0) {
|
|
l_error("rebuilding handshake rsne failed");
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
/* FT-over-DS can be better suited for these situations */
|
|
if ((hs->mde[4] & 1) && (station->ap_directed_roaming ||
|
|
station->signal_low)) {
|
|
if (netdev_fast_transition_over_ds(station->netdev, bss,
|
|
station_fast_transition_cb) < 0) {
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
} else {
|
|
if (netdev_fast_transition(station->netdev, bss,
|
|
station_fast_transition_cb) < 0) {
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
}
|
|
|
|
station->connected_bss = bss;
|
|
station->preparing_roam = false;
|
|
station_enter_state(station, STATION_STATE_ROAMING);
|
|
|
|
return;
|
|
}
|
|
|
|
/* Non-FT transition */
|
|
|
|
/*
|
|
* FT not available, we can try preauthentication if available.
|
|
* 802.11-2012 section 11.5.9.2:
|
|
* "A STA shall not use preauthentication within the same mobility
|
|
* domain if AKM suite type 00-0F-AC:3 or 00-0F-AC:4 is used in
|
|
* the current association."
|
|
*/
|
|
if (security == SECURITY_8021X &&
|
|
scan_bss_get_rsn_info(station->connected_bss,
|
|
&cur_rsne) >= 0 &&
|
|
scan_bss_get_rsn_info(bss, &target_rsne) >= 0 &&
|
|
cur_rsne.preauthentication &&
|
|
target_rsne.preauthentication) {
|
|
/*
|
|
* Both the current and the target AP support
|
|
* pre-authentication and we're using 8021x authentication so
|
|
* attempt to pre-authenticate and reassociate afterwards.
|
|
* If the pre-authentication fails or times out we simply
|
|
* won't supply any PMKID when reassociating.
|
|
* Remain in the preparing_roam state.
|
|
*/
|
|
memcpy(station->preauth_bssid, bss->addr, ETH_ALEN);
|
|
|
|
if (netdev_preauthenticate(station->netdev, bss,
|
|
station_preauthenticate_cb,
|
|
station) >= 0)
|
|
return;
|
|
}
|
|
|
|
new_hs = station_handshake_setup(station, connected, bss);
|
|
if (!new_hs) {
|
|
l_error("station_handshake_setup failed in reassociation");
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
station_transition_reassociate(station, bss, new_hs);
|
|
}
|
|
|
|
static void station_roam_scan_triggered(int err, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
if (err) {
|
|
station_roam_failed(station);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Do not update the Scanning property as we won't be updating the
|
|
* list of networks.
|
|
*/
|
|
}
|
|
|
|
static bool station_roam_scan_notify(int err, struct l_queue *bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
struct network *network = station->connected_network;
|
|
struct handshake_state *hs = netdev_get_handshake(station->netdev);
|
|
struct scan_bss *bss;
|
|
struct scan_bss *best_bss = NULL;
|
|
double best_bss_rank = 0.0;
|
|
static const double RANK_FT_FACTOR = 1.3;
|
|
uint16_t mdid;
|
|
enum security orig_security, security;
|
|
bool seen = false;
|
|
bool fils_hint = network_has_erp_identity(network);
|
|
|
|
if (err) {
|
|
station_roam_failed(station);
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* Do not call station_set_scan_results because this may have been
|
|
* a partial scan. We could at most update the current networks' BSS
|
|
* list in its station->networks entry.
|
|
*/
|
|
|
|
orig_security = network_get_security(network);
|
|
|
|
if (hs->mde)
|
|
ie_parse_mobility_domain_from_data(hs->mde, hs->mde[1] + 2,
|
|
&mdid, NULL, NULL);
|
|
|
|
/*
|
|
* BSSes in the bss_list come already ranked with their initial
|
|
* association preference rank value. We only need to add preference
|
|
* for BSSes that are within the FT Mobility Domain so as to favor
|
|
* Fast Roaming, if it is supported.
|
|
*/
|
|
|
|
while ((bss = l_queue_pop_head(bss_list))) {
|
|
double rank;
|
|
struct ie_rsn_info info;
|
|
int r;
|
|
|
|
/* Skip the BSS we are connected to if doing an AP roam */
|
|
if (station->ap_directed_roaming && !memcmp(bss->addr,
|
|
station->connected_bss->addr, 6))
|
|
goto next;
|
|
|
|
/* Skip result if it is not part of the ESS */
|
|
|
|
if (bss->ssid_len != hs->ssid_len ||
|
|
memcmp(bss->ssid, hs->ssid, hs->ssid_len))
|
|
goto next;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
r = scan_bss_get_rsn_info(bss, &info);
|
|
if (r < 0) {
|
|
if (r != -ENOENT)
|
|
goto next;
|
|
|
|
security = security_determine(bss->capability, NULL);
|
|
} else
|
|
security = security_determine(bss->capability, &info);
|
|
|
|
if (security != orig_security)
|
|
goto next;
|
|
|
|
seen = true;
|
|
|
|
if (!wiphy_can_connect(station->wiphy, bss, fils_hint))
|
|
goto next;
|
|
|
|
if (blacklist_contains_bss(bss->addr))
|
|
goto next;
|
|
|
|
rank = bss->rank;
|
|
|
|
if (hs->mde && bss->mde_present && l_get_le16(bss->mde) == mdid)
|
|
rank *= RANK_FT_FACTOR;
|
|
|
|
if (rank > best_bss_rank) {
|
|
if (best_bss)
|
|
scan_bss_free(best_bss);
|
|
|
|
best_bss = bss;
|
|
best_bss_rank = rank;
|
|
|
|
continue;
|
|
}
|
|
|
|
next:
|
|
scan_bss_free(bss);
|
|
}
|
|
|
|
l_queue_destroy(bss_list, NULL);
|
|
|
|
if (!seen)
|
|
goto fail_free_bss;
|
|
|
|
/* See if we have anywhere to roam to */
|
|
if (!best_bss || scan_bss_addr_eq(best_bss, station->connected_bss))
|
|
goto fail_free_bss;
|
|
|
|
bss = network_bss_find_by_addr(network, best_bss->addr);
|
|
if (bss) {
|
|
scan_bss_free(best_bss);
|
|
best_bss = bss;
|
|
} else {
|
|
network_bss_add(network, best_bss);
|
|
l_queue_push_tail(station->bss_list, best_bss);
|
|
}
|
|
|
|
station_transition_start(station, best_bss);
|
|
|
|
return true;
|
|
|
|
fail_free_bss:
|
|
if (best_bss)
|
|
scan_bss_free(best_bss);
|
|
|
|
station_roam_failed(station);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void station_roam_scan_destroy(void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
|
|
station->roam_scan_id = 0;
|
|
}
|
|
|
|
static int station_roam_scan(struct station *station,
|
|
struct scan_freq_set *freq_set)
|
|
{
|
|
struct scan_parameters params = { .freqs = freq_set, .flush = true };
|
|
|
|
l_debug("ifindex: %u", netdev_get_ifindex(station->netdev));
|
|
|
|
if (station->connected_network)
|
|
/* Use direct probe request */
|
|
params.ssid = network_get_ssid(station->connected_network);
|
|
|
|
if (!freq_set)
|
|
station->roam_scan_full = true;
|
|
|
|
station->roam_scan_id =
|
|
scan_active_full(netdev_get_wdev_id(station->netdev), ¶ms,
|
|
station_roam_scan_triggered,
|
|
station_roam_scan_notify, station,
|
|
station_roam_scan_destroy);
|
|
|
|
if (!station->roam_scan_id)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int station_roam_scan_known_freqs(struct station *station)
|
|
{
|
|
const struct network_info *info = network_get_info(
|
|
station->connected_network);
|
|
struct scan_freq_set *freqs = network_info_get_roam_frequencies(info,
|
|
station->connected_bss->frequency, 5);
|
|
int r;
|
|
|
|
if (!freqs)
|
|
return -ENODATA;
|
|
|
|
r = station_roam_scan(station, freqs);
|
|
scan_freq_set_free(freqs);
|
|
return r;
|
|
}
|
|
|
|
static void station_neighbor_report_cb(struct netdev *netdev, int err,
|
|
const uint8_t *reports,
|
|
size_t reports_len, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct scan_freq_set *freq_set;
|
|
int r;
|
|
|
|
l_debug("ifindex: %u, error: %d(%s)",
|
|
netdev_get_ifindex(station->netdev),
|
|
err, err < 0 ? strerror(-err) : "");
|
|
|
|
/*
|
|
* Check if we're still attempting to roam -- if dbus Disconnect
|
|
* had been called in the meantime we just abort the attempt.
|
|
*/
|
|
if (!station->preparing_roam || err == -ENODEV)
|
|
return;
|
|
|
|
if (!reports || err) {
|
|
r = station_roam_scan_known_freqs(station);
|
|
|
|
if (r == -ENODATA)
|
|
l_debug("no neighbor report results or known freqs");
|
|
|
|
if (r < 0)
|
|
station_roam_failed(station);
|
|
|
|
return;
|
|
}
|
|
|
|
parse_neighbor_report(station, reports, reports_len, &freq_set);
|
|
|
|
r = station_roam_scan(station, freq_set);
|
|
|
|
if (freq_set)
|
|
scan_freq_set_free(freq_set);
|
|
|
|
if (r < 0)
|
|
station_roam_failed(station);
|
|
}
|
|
|
|
static void station_roam_trigger_cb(struct l_timeout *timeout, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
int r;
|
|
|
|
l_debug("%u", netdev_get_ifindex(station->netdev));
|
|
|
|
l_timeout_remove(station->roam_trigger_timeout);
|
|
station->roam_trigger_timeout = NULL;
|
|
station->preparing_roam = true;
|
|
|
|
/*
|
|
* If current BSS supports Neighbor Reports, narrow the scan down
|
|
* to channels occupied by known neighbors in the ESS. If no neighbor
|
|
* report was obtained upon connection, request one now. This isn't
|
|
* 100% reliable as the neighbor lists are not required to be
|
|
* complete or current. It is likely still better than doing a
|
|
* full scan. 10.11.10.1: "A neighbor report may not be exhaustive
|
|
* either by choice, or due to the fact that there may be neighbor
|
|
* APs not known to the AP."
|
|
*/
|
|
if (station->roam_freqs) {
|
|
if (station_roam_scan(station, station->roam_freqs) == 0) {
|
|
l_debug("Using cached neighbor report for roam");
|
|
return;
|
|
}
|
|
} else if (station->connected_bss->cap_rm_neighbor_report) {
|
|
if (netdev_neighbor_report_req(station->netdev,
|
|
station_neighbor_report_cb) == 0) {
|
|
l_debug("Requesting neighbor report for roam");
|
|
return;
|
|
}
|
|
}
|
|
|
|
r = station_roam_scan_known_freqs(station);
|
|
if (r == -ENODATA)
|
|
l_debug("No neighbor report or known frequencies, roam failed");
|
|
|
|
if (r < 0)
|
|
station_roam_failed(station);
|
|
}
|
|
|
|
static void station_roam_timeout_rearm(struct station *station, int seconds)
|
|
{
|
|
struct timespec now, min_timeout;
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &now);
|
|
|
|
min_timeout = now;
|
|
min_timeout.tv_sec += seconds;
|
|
|
|
if (station->roam_min_time.tv_sec < min_timeout.tv_sec ||
|
|
(station->roam_min_time.tv_sec == min_timeout.tv_sec &&
|
|
station->roam_min_time.tv_nsec < min_timeout.tv_nsec))
|
|
station->roam_min_time = min_timeout;
|
|
|
|
seconds = station->roam_min_time.tv_sec - now.tv_sec +
|
|
(station->roam_min_time.tv_nsec > now.tv_nsec ? 1 : 0);
|
|
|
|
station->roam_trigger_timeout =
|
|
l_timeout_create(seconds, station_roam_trigger_cb,
|
|
station, NULL);
|
|
}
|
|
|
|
static bool station_cannot_roam(struct station *station)
|
|
{
|
|
const struct l_settings *config = iwd_get_config();
|
|
bool disabled;
|
|
|
|
/*
|
|
* Disable roaming with hardware that can roam automatically. Note this
|
|
* is now required for recent kernels which have CQM event support on
|
|
* this type of hardware (e.g. brcmfmac).
|
|
*/
|
|
if (wiphy_supports_firmware_roam(station->wiphy))
|
|
return true;
|
|
|
|
if (!l_settings_get_bool(config, "Scan", "DisableRoamingScan",
|
|
&disabled))
|
|
disabled = false;
|
|
|
|
return disabled || station->preparing_roam ||
|
|
station->state == STATION_STATE_ROAMING;
|
|
}
|
|
|
|
#define WNM_REQUEST_MODE_PREFERRED_CANDIDATE_LIST (1 << 0)
|
|
#define WNM_REQUEST_MODE_TERMINATION_IMMINENT (1 << 3)
|
|
#define WNM_REQUEST_MODE_ESS_DISASSOCIATION_IMMINENT (1 << 4)
|
|
|
|
static void station_ap_directed_roam(struct station *station,
|
|
const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len)
|
|
{
|
|
uint32_t pos = 0;
|
|
uint8_t req_mode;
|
|
uint16_t dtimer;
|
|
uint8_t valid_interval;
|
|
|
|
l_debug("ifindex: %u", netdev_get_ifindex(station->netdev));
|
|
|
|
if (station_cannot_roam(station))
|
|
return;
|
|
|
|
if (body_len < 7)
|
|
goto format_error;
|
|
|
|
/*
|
|
* First two bytes are checked by the frame watch (WNM category and
|
|
* WNM action). The third is the dialog token which is not relevant
|
|
* because we did not send a BSS transition query -- so skip these
|
|
* first three bytes.
|
|
*/
|
|
pos += 3;
|
|
|
|
req_mode = l_get_u8(body + pos);
|
|
pos++;
|
|
|
|
/*
|
|
* TODO: Disassociation timer and validity interval are currently not
|
|
* used since the BSS transition request is being handled immediately.
|
|
*/
|
|
dtimer = l_get_le16(body + pos);
|
|
pos += 2;
|
|
valid_interval = l_get_u8(body + pos);
|
|
pos++;
|
|
|
|
l_debug("roam: BSS transition received from AP: "
|
|
"Disassociation Time: %u, "
|
|
"Validity interval: %u", dtimer, valid_interval);
|
|
|
|
/* check req_mode for optional values */
|
|
if (req_mode & WNM_REQUEST_MODE_TERMINATION_IMMINENT) {
|
|
if (pos + 12 > body_len)
|
|
goto format_error;
|
|
|
|
pos += 12;
|
|
}
|
|
|
|
if (req_mode & WNM_REQUEST_MODE_ESS_DISASSOCIATION_IMMINENT ) {
|
|
uint8_t url_len;
|
|
|
|
if (pos + 1 > body_len)
|
|
goto format_error;
|
|
|
|
url_len = l_get_u8(body + pos);
|
|
pos++;
|
|
|
|
if (pos + url_len > body_len)
|
|
goto format_error;
|
|
|
|
pos += url_len;
|
|
}
|
|
|
|
station->ap_directed_roaming = true;
|
|
station->preparing_roam = true;
|
|
|
|
l_timeout_remove(station->roam_trigger_timeout);
|
|
station->roam_trigger_timeout = NULL;
|
|
|
|
if (req_mode & WNM_REQUEST_MODE_PREFERRED_CANDIDATE_LIST) {
|
|
l_debug("roam: AP sent a preferred candidate list");
|
|
station_neighbor_report_cb(station->netdev, 0, body + pos,
|
|
body_len - pos,station);
|
|
} else {
|
|
l_debug("roam: AP did not include a preferred candidate list");
|
|
if (station_roam_scan(station, NULL) < 0)
|
|
station_roam_failed(station);
|
|
}
|
|
|
|
return;
|
|
|
|
format_error:
|
|
l_debug("bad AP roam frame formatting");
|
|
}
|
|
|
|
static void station_low_rssi(struct station *station)
|
|
{
|
|
if (station->signal_low)
|
|
return;
|
|
|
|
station->signal_low = true;
|
|
|
|
if (station_cannot_roam(station))
|
|
return;
|
|
|
|
/* Set a 5-second initial timeout */
|
|
station_roam_timeout_rearm(station, 5);
|
|
}
|
|
|
|
static void station_ok_rssi(struct station *station)
|
|
{
|
|
l_timeout_remove(station->roam_trigger_timeout);
|
|
station->roam_trigger_timeout = NULL;
|
|
|
|
station->signal_low = false;
|
|
station->roam_min_time.tv_sec = 0;
|
|
}
|
|
|
|
static void station_event_roamed(struct station *station, struct scan_bss *new)
|
|
{
|
|
struct scan_bss *stale;
|
|
|
|
network_bss_update(station->connected_network, new);
|
|
|
|
/* Remove new BSS if it exists in past scan results */
|
|
stale = l_queue_remove_if(station->bss_list, bss_match_bssid,
|
|
new->addr);
|
|
if (stale)
|
|
scan_bss_free(stale);
|
|
|
|
station->connected_bss = new;
|
|
|
|
l_queue_insert(station->bss_list, new, scan_bss_rank_compare, NULL);
|
|
|
|
station_roamed(station);
|
|
}
|
|
|
|
static void station_rssi_level_changed(struct station *station,
|
|
uint8_t level_idx);
|
|
|
|
static void station_netdev_event(struct netdev *netdev, enum netdev_event event,
|
|
void *event_data, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
switch (event) {
|
|
case NETDEV_EVENT_AUTHENTICATING:
|
|
l_debug("Authenticating");
|
|
break;
|
|
case NETDEV_EVENT_ASSOCIATING:
|
|
l_debug("Associating");
|
|
break;
|
|
case NETDEV_EVENT_DISCONNECT_BY_AP:
|
|
case NETDEV_EVENT_DISCONNECT_BY_SME:
|
|
station_disconnect_event(station, event_data);
|
|
break;
|
|
case NETDEV_EVENT_RSSI_THRESHOLD_LOW:
|
|
station_low_rssi(station);
|
|
break;
|
|
case NETDEV_EVENT_RSSI_THRESHOLD_HIGH:
|
|
station_ok_rssi(station);
|
|
break;
|
|
case NETDEV_EVENT_RSSI_LEVEL_NOTIFY:
|
|
station_rssi_level_changed(station, l_get_u8(event_data));
|
|
break;
|
|
case NETDEV_EVENT_ROAMING:
|
|
station_enter_state(station, STATION_STATE_ROAMING);
|
|
break;
|
|
case NETDEV_EVENT_ROAMED:
|
|
station_event_roamed(station, (struct scan_bss *) event_data);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static bool station_try_next_bss(struct station *station)
|
|
{
|
|
struct scan_bss *next;
|
|
int ret;
|
|
|
|
next = network_bss_select(station->connected_network, false);
|
|
|
|
if (!next)
|
|
return false;
|
|
|
|
ret = __station_connect_network(station, station->connected_network,
|
|
next);
|
|
if (ret < 0)
|
|
return false;
|
|
|
|
l_debug("Attempting to connect to next BSS "MAC, MAC_STR(next->addr));
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool station_retry_with_reason(struct station *station,
|
|
uint16_t reason_code)
|
|
{
|
|
/*
|
|
* We don't want to cause a retry and blacklist if the password was
|
|
* incorrect. Otherwise we would just continue to fail.
|
|
*
|
|
* Other reason codes can be added here if its decided we want to
|
|
* fail in those cases.
|
|
*/
|
|
if (reason_code == MMPDU_REASON_CODE_PREV_AUTH_NOT_VALID ||
|
|
reason_code == MMPDU_REASON_CODE_IEEE8021X_FAILED)
|
|
return false;
|
|
|
|
blacklist_add_bss(station->connected_bss->addr);
|
|
|
|
return station_try_next_bss(station);
|
|
}
|
|
|
|
/* A bit more concise for trying to fit these into 80 characters */
|
|
#define IS_TEMPORARY_STATUS(code) \
|
|
((code) == MMPDU_STATUS_CODE_DENIED_UNSUFFICIENT_BANDWIDTH || \
|
|
(code) == MMPDU_STATUS_CODE_DENIED_POOR_CHAN_CONDITIONS || \
|
|
(code) == MMPDU_STATUS_CODE_REJECTED_WITH_SUGG_BSS_TRANS || \
|
|
(code) == MMPDU_STATUS_CODE_DENIED_NO_MORE_STAS)
|
|
|
|
static bool station_retry_with_status(struct station *station,
|
|
uint16_t status_code)
|
|
{
|
|
/*
|
|
* Certain Auth/Assoc failures should not cause a timeout blacklist.
|
|
* In these cases we want to only temporarily blacklist the BSS until
|
|
* the connection is complete.
|
|
*
|
|
* TODO: The WITH_SUGG_BSS_TRANS case should also include a neighbor
|
|
* report IE in the frame. This would allow us to target a
|
|
* specific BSS on our next attempt. There is currently no way to
|
|
* obtain that IE, but this should be done in the future.
|
|
*/
|
|
if (IS_TEMPORARY_STATUS(status_code))
|
|
network_blacklist_add(station->connected_network,
|
|
station->connected_bss);
|
|
else
|
|
blacklist_add_bss(station->connected_bss->addr);
|
|
|
|
return station_try_next_bss(station);
|
|
}
|
|
|
|
static void station_connect_dbus_reply(struct station *station,
|
|
enum netdev_result result)
|
|
{
|
|
struct l_dbus_message *reply;
|
|
|
|
switch (result) {
|
|
case NETDEV_RESULT_ABORTED:
|
|
reply = dbus_error_aborted(station->connect_pending);
|
|
break;
|
|
case NETDEV_RESULT_OK:
|
|
reply = l_dbus_message_new_method_return(
|
|
station->connect_pending);
|
|
break;
|
|
default:
|
|
reply = dbus_error_failed(station->connect_pending);
|
|
break;
|
|
}
|
|
|
|
dbus_pending_reply(&station->connect_pending, reply);
|
|
}
|
|
|
|
static void station_connect_cb(struct netdev *netdev, enum netdev_result result,
|
|
void *event_data, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("%u, result: %d", netdev_get_ifindex(station->netdev), result);
|
|
|
|
switch (result) {
|
|
case NETDEV_RESULT_OK:
|
|
blacklist_remove_bss(station->connected_bss->addr);
|
|
break;
|
|
case NETDEV_RESULT_HANDSHAKE_FAILED:
|
|
/* reason code in this case */
|
|
if (station_retry_with_reason(station, l_get_u16(event_data)))
|
|
return;
|
|
|
|
break;
|
|
case NETDEV_RESULT_AUTHENTICATION_FAILED:
|
|
case NETDEV_RESULT_ASSOCIATION_FAILED:
|
|
/* status code in this case */
|
|
if (station_retry_with_status(station, l_get_u16(event_data)))
|
|
return;
|
|
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (station->connect_pending)
|
|
station_connect_dbus_reply(station, result);
|
|
|
|
if (result != NETDEV_RESULT_OK) {
|
|
if (result != NETDEV_RESULT_ABORTED) {
|
|
bool in_handshake =
|
|
result == NETDEV_RESULT_HANDSHAKE_FAILED;
|
|
|
|
network_connect_failed(station->connected_network,
|
|
in_handshake);
|
|
station_disassociated(station);
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Get a neighbor report now so future roams can avoid waiting for
|
|
* a report at that time
|
|
*/
|
|
if (station->connected_bss->cap_rm_neighbor_report) {
|
|
if (netdev_neighbor_report_req(station->netdev,
|
|
station_early_neighbor_report_cb) < 0)
|
|
l_warn("Could not request neighbor report");
|
|
}
|
|
|
|
network_connected(station->connected_network);
|
|
|
|
if (station->netconfig)
|
|
netconfig_configure(station->netconfig,
|
|
network_get_settings(
|
|
station->connected_network),
|
|
netdev_get_address(station->netdev),
|
|
station_netconfig_event_handler,
|
|
station);
|
|
else
|
|
station_enter_state(station, STATION_STATE_CONNECTED);
|
|
}
|
|
|
|
int __station_connect_network(struct station *station, struct network *network,
|
|
struct scan_bss *bss)
|
|
{
|
|
const struct iovec *extra_ies;
|
|
size_t iov_elems = 0;
|
|
struct handshake_state *hs;
|
|
int r;
|
|
|
|
hs = station_handshake_setup(station, network, bss);
|
|
if (!hs)
|
|
return -ENOTSUP;
|
|
|
|
extra_ies = network_get_extra_ies(network, &iov_elems);
|
|
|
|
r = netdev_connect(station->netdev, bss, hs, extra_ies,
|
|
iov_elems, station_netdev_event,
|
|
station_connect_cb, station);
|
|
if (r < 0) {
|
|
handshake_state_free(hs);
|
|
return r;
|
|
}
|
|
|
|
l_debug("connecting to BSS "MAC, MAC_STR(bss->addr));
|
|
|
|
station->connected_bss = bss;
|
|
station->connected_network = network;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void station_disconnect_onconnect_cb(struct netdev *netdev, bool success,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
int err;
|
|
|
|
station_enter_state(station, STATION_STATE_DISCONNECTED);
|
|
|
|
err = __station_connect_network(station,
|
|
station->connect_pending_network,
|
|
station->connect_pending_bss);
|
|
|
|
station->connect_pending_network = NULL;
|
|
station->connect_pending_bss = NULL;
|
|
|
|
if (err < 0) {
|
|
dbus_pending_reply(&station->connect_pending,
|
|
dbus_error_from_errno(err,
|
|
station->connect_pending));
|
|
return;
|
|
}
|
|
|
|
station_enter_state(station, STATION_STATE_CONNECTING);
|
|
}
|
|
|
|
static void station_disconnect_onconnect(struct station *station,
|
|
struct network *network,
|
|
struct scan_bss *bss,
|
|
struct l_dbus_message *message)
|
|
{
|
|
if (netdev_disconnect(station->netdev, station_disconnect_onconnect_cb,
|
|
station) < 0) {
|
|
l_dbus_send(dbus_get_bus(),
|
|
dbus_error_from_errno(-EIO, message));
|
|
return;
|
|
}
|
|
|
|
if (station->netconfig)
|
|
netconfig_reset(station->netconfig);
|
|
|
|
station_reset_connection_state(station);
|
|
|
|
station_enter_state(station, STATION_STATE_DISCONNECTING);
|
|
|
|
station->connect_pending_network = network;
|
|
station->connect_pending_bss = bss;
|
|
|
|
station->connect_pending = l_dbus_message_ref(message);
|
|
}
|
|
|
|
void station_connect_network(struct station *station, struct network *network,
|
|
struct scan_bss *bss,
|
|
struct l_dbus_message *message)
|
|
{
|
|
struct l_dbus *dbus = dbus_get_bus();
|
|
int err;
|
|
|
|
/*
|
|
* If a hidden scan is not completed, station_is_busy would not
|
|
* indicate anything is going on so we need to cancel the scan and
|
|
* fail the connection now.
|
|
*/
|
|
if (station->hidden_network_scan_id) {
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->hidden_network_scan_id);
|
|
|
|
dbus_pending_reply(&station->hidden_pending,
|
|
dbus_error_failed(station->hidden_pending));
|
|
}
|
|
|
|
if (station->quick_scan_id) {
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->quick_scan_id);
|
|
station->quick_scan_id = 0;
|
|
station_property_set_scanning(station, false);
|
|
}
|
|
|
|
if (station_is_busy(station)) {
|
|
station_disconnect_onconnect(station, network, bss, message);
|
|
|
|
return;
|
|
}
|
|
|
|
err = __station_connect_network(station, network, bss);
|
|
if (err < 0)
|
|
goto error;
|
|
|
|
station_enter_state(station, STATION_STATE_CONNECTING);
|
|
|
|
station->connect_pending = l_dbus_message_ref(message);
|
|
station->autoconnect = true;
|
|
|
|
return;
|
|
|
|
error:
|
|
l_dbus_send(dbus, dbus_error_from_errno(err, message));
|
|
}
|
|
|
|
static void station_hidden_network_scan_triggered(int err, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("");
|
|
|
|
if (!err)
|
|
return;
|
|
|
|
dbus_pending_reply(&station->hidden_pending,
|
|
dbus_error_failed(station->hidden_pending));
|
|
}
|
|
|
|
static bool station_hidden_network_scan_results(int err,
|
|
struct l_queue *bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
struct network *network_psk;
|
|
struct network *network_open;
|
|
const char *ssid;
|
|
uint8_t ssid_len;
|
|
struct l_dbus_message *msg;
|
|
struct l_dbus_message *error;
|
|
struct scan_bss *bss;
|
|
|
|
l_debug("");
|
|
|
|
msg = station->hidden_pending;
|
|
station->hidden_pending = NULL;
|
|
/* Zero this now so station_connect_network knows the scan is done */
|
|
station->hidden_network_scan_id = 0;
|
|
|
|
if (err) {
|
|
dbus_pending_reply(&msg, dbus_error_failed(msg));
|
|
return false;
|
|
}
|
|
|
|
if (!l_dbus_message_get_arguments(msg, "s", &ssid)) {
|
|
dbus_pending_reply(&msg, dbus_error_invalid_args(msg));
|
|
return false;
|
|
}
|
|
|
|
ssid_len = strlen(ssid);
|
|
|
|
while ((bss = l_queue_pop_head(bss_list))) {
|
|
if (bss->ssid_len != ssid_len ||
|
|
memcmp(bss->ssid, ssid, ssid_len))
|
|
goto next;
|
|
|
|
/*
|
|
* Override time_stamp so that this entry is removed on
|
|
* the next scan
|
|
*/
|
|
bss->time_stamp = 0;
|
|
|
|
if (station_add_seen_bss(station, bss)) {
|
|
l_queue_push_tail(station->bss_list, bss);
|
|
|
|
continue;
|
|
}
|
|
|
|
next:
|
|
scan_bss_free(bss);
|
|
}
|
|
|
|
l_queue_destroy(bss_list, NULL);
|
|
|
|
network_psk = station_network_find(station, ssid, SECURITY_PSK);
|
|
network_open = station_network_find(station, ssid, SECURITY_NONE);
|
|
|
|
if (!network_psk && !network_open) {
|
|
dbus_pending_reply(&msg, dbus_error_not_found(msg));
|
|
return true;
|
|
}
|
|
|
|
if (network_psk && network_open) {
|
|
dbus_pending_reply(&msg, dbus_error_service_set_overlap(msg));
|
|
return true;
|
|
}
|
|
|
|
error = network_connect_new_hidden_network(network_psk ?: network_open,
|
|
msg);
|
|
|
|
if (error)
|
|
dbus_pending_reply(&msg, error);
|
|
else
|
|
l_dbus_message_unref(msg);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void station_hidden_network_scan_destroy(void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
|
|
station->hidden_network_scan_id = 0;
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_connect_hidden_network(
|
|
struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
uint64_t id = netdev_get_wdev_id(station->netdev);
|
|
struct scan_parameters params = {
|
|
.flush = true,
|
|
.randomize_mac_addr_hint = false,
|
|
};
|
|
const char *ssid;
|
|
struct network *network;
|
|
|
|
l_debug("");
|
|
|
|
if (station->hidden_pending)
|
|
return dbus_error_busy(message);
|
|
|
|
if (!l_dbus_message_get_arguments(message, "s", &ssid))
|
|
return dbus_error_invalid_args(message);
|
|
|
|
if (strlen(ssid) > 32)
|
|
return dbus_error_invalid_args(message);
|
|
|
|
if (known_networks_find(ssid, SECURITY_PSK) ||
|
|
known_networks_find(ssid, SECURITY_NONE))
|
|
return dbus_error_already_provisioned(message);
|
|
|
|
network = station_network_find(station, ssid, SECURITY_PSK);
|
|
if (!network)
|
|
network = station_network_find(station, ssid, SECURITY_NONE);
|
|
|
|
/*
|
|
* This checks for a corner case where the hidden network was already
|
|
* found and is in our scan results, but the initial connection failed.
|
|
* For example, the password was given incorrectly. In this case the
|
|
* entry will also be found on the hidden bss list.
|
|
*/
|
|
if (network) {
|
|
const struct l_queue_entry *entry =
|
|
l_queue_get_entries(station->hidden_bss_list_sorted);
|
|
struct scan_bss *target = network_bss_select(network, true);
|
|
|
|
for (; entry; entry = entry->next) {
|
|
struct scan_bss *bss = entry->data;
|
|
|
|
if (!scan_bss_addr_eq(target, bss))
|
|
continue;
|
|
|
|
/* We can skip the scan and try to connect right away */
|
|
return network_connect_new_hidden_network(network,
|
|
message);
|
|
}
|
|
|
|
return dbus_error_not_hidden(message);
|
|
}
|
|
|
|
params.ssid = ssid;
|
|
|
|
/* HW cannot randomize our MAC if connected */
|
|
if (!station->connected_bss)
|
|
params.randomize_mac_addr_hint = true;
|
|
|
|
station->hidden_network_scan_id = scan_active_full(id, ¶ms,
|
|
station_hidden_network_scan_triggered,
|
|
station_hidden_network_scan_results,
|
|
station, station_hidden_network_scan_destroy);
|
|
if (!station->hidden_network_scan_id)
|
|
return dbus_error_failed(message);
|
|
|
|
station->hidden_pending = l_dbus_message_ref(message);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void station_disconnect_reconnect_cb(struct netdev *netdev, bool success,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
if (__station_connect_network(station, station->connected_network,
|
|
station->connected_bss) < 0)
|
|
station_disassociated(station);
|
|
}
|
|
|
|
static void station_reconnect(struct station *station)
|
|
{
|
|
/*
|
|
* Rather than doing 4 or so state changes, lets just go into
|
|
* roaming for the duration of this reconnect.
|
|
*/
|
|
station_enter_state(station, STATION_STATE_ROAMING);
|
|
|
|
netdev_disconnect(station->netdev, station_disconnect_reconnect_cb,
|
|
station);
|
|
}
|
|
|
|
static void station_disconnect_cb(struct netdev *netdev, bool success,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("%u, success: %d",
|
|
netdev_get_ifindex(station->netdev), success);
|
|
|
|
if (station->disconnect_pending) {
|
|
struct l_dbus_message *reply;
|
|
|
|
if (success) {
|
|
reply = l_dbus_message_new_method_return(
|
|
station->disconnect_pending);
|
|
l_dbus_message_set_arguments(reply, "");
|
|
} else
|
|
reply = dbus_error_failed(station->disconnect_pending);
|
|
|
|
dbus_pending_reply(&station->disconnect_pending, reply);
|
|
}
|
|
|
|
station_enter_state(station, STATION_STATE_DISCONNECTED);
|
|
|
|
if (station->autoconnect)
|
|
station_enter_state(station, STATION_STATE_AUTOCONNECT_QUICK);
|
|
}
|
|
|
|
int station_disconnect(struct station *station)
|
|
{
|
|
if (station->state == STATION_STATE_DISCONNECTING)
|
|
return -EBUSY;
|
|
|
|
if (!station->connected_bss)
|
|
return -ENOTCONN;
|
|
|
|
if (station->netconfig)
|
|
netconfig_reset(station->netconfig);
|
|
|
|
/*
|
|
* If the disconnect somehow fails we won't know if we're still
|
|
* connected so we may as well indicate now that we're no longer
|
|
* connected.
|
|
*/
|
|
station_reset_connection_state(station);
|
|
|
|
station_enter_state(station, STATION_STATE_DISCONNECTING);
|
|
|
|
if (netdev_disconnect(station->netdev,
|
|
station_disconnect_cb, station) < 0)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_disconnect(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
int result;
|
|
|
|
l_debug("");
|
|
|
|
/*
|
|
* Disconnect was triggered by the user, don't autoconnect. Wait for
|
|
* the user's explicit instructions to scan and connect to the network
|
|
*/
|
|
station_set_autoconnect(station, false);
|
|
|
|
if (station->hidden_network_scan_id) {
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->hidden_network_scan_id);
|
|
dbus_pending_reply(&station->hidden_pending,
|
|
dbus_error_aborted(station->hidden_pending));
|
|
|
|
return l_dbus_message_new_method_return(message);
|
|
}
|
|
|
|
if (!station_is_busy(station))
|
|
return l_dbus_message_new_method_return(message);
|
|
|
|
result = station_disconnect(station);
|
|
if (result < 0)
|
|
return dbus_error_from_errno(result, message);
|
|
|
|
station->disconnect_pending = l_dbus_message_ref(message);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_get_networks(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct l_dbus_message *reply =
|
|
l_dbus_message_new_method_return(message);
|
|
struct l_dbus_message_builder *builder =
|
|
l_dbus_message_builder_new(reply);
|
|
struct l_queue *sorted = station->networks_sorted;
|
|
const struct l_queue_entry *entry;
|
|
|
|
l_dbus_message_builder_enter_array(builder, "(on)");
|
|
|
|
for (entry = l_queue_get_entries(sorted); entry; entry = entry->next) {
|
|
const struct network *network = entry->data;
|
|
int16_t signal_strength = network_get_signal_strength(network);
|
|
|
|
l_dbus_message_builder_enter_struct(builder, "on");
|
|
l_dbus_message_builder_append_basic(builder, 'o',
|
|
network_get_path(network));
|
|
l_dbus_message_builder_append_basic(builder, 'n',
|
|
&signal_strength);
|
|
l_dbus_message_builder_leave_struct(builder);
|
|
}
|
|
|
|
l_dbus_message_builder_leave_array(builder);
|
|
|
|
l_dbus_message_builder_finalize(builder);
|
|
l_dbus_message_builder_destroy(builder);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_get_hidden_access_points(
|
|
struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct l_dbus_message *reply =
|
|
l_dbus_message_new_method_return(message);
|
|
struct l_dbus_message_builder *builder =
|
|
l_dbus_message_builder_new(reply);
|
|
const struct l_queue_entry *entry;
|
|
|
|
l_dbus_message_builder_enter_array(builder, "(sns)");
|
|
|
|
for (entry = l_queue_get_entries(station->hidden_bss_list_sorted);
|
|
entry; entry = entry->next) {
|
|
struct scan_bss *bss = entry->data;
|
|
int16_t signal_strength = bss->signal_strength;
|
|
struct ie_rsn_info info;
|
|
enum security security;
|
|
int r;
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
r = scan_bss_get_rsn_info(bss, &info);
|
|
if (r < 0) {
|
|
if (r != -ENOENT)
|
|
continue;
|
|
|
|
security = security_determine(bss->capability, NULL);
|
|
} else {
|
|
security = security_determine(bss->capability, &info);
|
|
}
|
|
|
|
l_dbus_message_builder_enter_struct(builder, "sns");
|
|
l_dbus_message_builder_append_basic(builder, 's',
|
|
util_address_to_string(bss->addr));
|
|
l_dbus_message_builder_append_basic(builder, 'n',
|
|
&signal_strength);
|
|
l_dbus_message_builder_append_basic(builder, 's',
|
|
security_to_str(security));
|
|
l_dbus_message_builder_leave_struct(builder);
|
|
}
|
|
|
|
l_dbus_message_builder_leave_array(builder);
|
|
|
|
l_dbus_message_builder_finalize(builder);
|
|
l_dbus_message_builder_destroy(builder);
|
|
|
|
return reply;
|
|
}
|
|
|
|
static void station_dbus_scan_done(struct station *station)
|
|
{
|
|
station->dbus_scan_id = 0;
|
|
station_property_set_scanning(station, false);
|
|
}
|
|
|
|
static void station_dbus_scan_triggered(int err, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct l_dbus_message *reply;
|
|
|
|
l_debug("station_scan_triggered: %i", err);
|
|
|
|
if (err < 0) {
|
|
if (station->scan_pending) {
|
|
reply = dbus_error_from_errno(err,
|
|
station->scan_pending);
|
|
dbus_pending_reply(&station->scan_pending, reply);
|
|
}
|
|
|
|
station_dbus_scan_done(station);
|
|
return;
|
|
}
|
|
|
|
l_debug("Scan triggered for %s subset %i",
|
|
netdev_get_name(station->netdev),
|
|
station->dbus_scan_subset_idx);
|
|
|
|
if (station->scan_pending) {
|
|
reply = l_dbus_message_new_method_return(station->scan_pending);
|
|
l_dbus_message_set_arguments(reply, "");
|
|
dbus_pending_reply(&station->scan_pending, reply);
|
|
}
|
|
|
|
station_property_set_scanning(station, true);
|
|
}
|
|
|
|
static bool station_dbus_scan_subset(struct station *station);
|
|
|
|
static bool station_dbus_scan_results(int err, struct l_queue *bss_list,
|
|
const struct scan_freq_set *freqs,
|
|
void *userdata)
|
|
{
|
|
struct station *station = userdata;
|
|
unsigned int next_idx = station->dbus_scan_subset_idx + 1;
|
|
bool autoconnect;
|
|
bool last_subset;
|
|
|
|
if (err) {
|
|
station_dbus_scan_done(station);
|
|
return false;
|
|
}
|
|
|
|
autoconnect = station_is_autoconnecting(station);
|
|
station_set_scan_results(station, bss_list, freqs, autoconnect);
|
|
|
|
last_subset = next_idx >= L_ARRAY_SIZE(station->scan_freqs_order) ||
|
|
station->scan_freqs_order[next_idx] == NULL;
|
|
station->dbus_scan_subset_idx = next_idx;
|
|
|
|
if (last_subset || !station_dbus_scan_subset(station))
|
|
station_dbus_scan_done(station);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool station_dbus_scan_subset(struct station *station)
|
|
{
|
|
unsigned int idx = station->dbus_scan_subset_idx;
|
|
|
|
station->dbus_scan_id = station_scan_trigger(station,
|
|
station->scan_freqs_order[idx],
|
|
station_dbus_scan_triggered,
|
|
station_dbus_scan_results,
|
|
NULL);
|
|
|
|
return station->dbus_scan_id != 0;
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_scan(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("Scan called from DBus");
|
|
|
|
if (station->dbus_scan_id)
|
|
return dbus_error_busy(message);
|
|
|
|
if (station->state == STATION_STATE_CONNECTING)
|
|
return dbus_error_busy(message);
|
|
|
|
station->dbus_scan_subset_idx = 0;
|
|
|
|
if (!station_dbus_scan_subset(station))
|
|
return dbus_error_failed(message);
|
|
|
|
station->scan_pending = l_dbus_message_ref(message);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct signal_agent {
|
|
char *owner;
|
|
char *path;
|
|
unsigned int disconnect_watch;
|
|
};
|
|
|
|
static void station_signal_agent_notify(struct signal_agent *agent,
|
|
const char *device_path, uint8_t level)
|
|
{
|
|
struct l_dbus_message *msg;
|
|
|
|
msg = l_dbus_message_new_method_call(dbus_get_bus(),
|
|
agent->owner, agent->path,
|
|
IWD_SIGNAL_AGENT_INTERFACE,
|
|
"Changed");
|
|
l_dbus_message_set_arguments(msg, "oy", device_path, level);
|
|
l_dbus_message_set_no_reply(msg, true);
|
|
|
|
l_dbus_send(dbus_get_bus(), msg);
|
|
}
|
|
|
|
static void station_rssi_level_changed(struct station *station,
|
|
uint8_t level_idx)
|
|
{
|
|
struct netdev *netdev = station->netdev;
|
|
|
|
if (!station->signal_agent)
|
|
return;
|
|
|
|
station_signal_agent_notify(station->signal_agent,
|
|
netdev_get_path(netdev), level_idx);
|
|
}
|
|
|
|
static void station_signal_agent_release(struct signal_agent *agent,
|
|
const char *device_path)
|
|
{
|
|
struct l_dbus_message *msg;
|
|
|
|
msg = l_dbus_message_new_method_call(dbus_get_bus(),
|
|
agent->owner, agent->path,
|
|
IWD_SIGNAL_AGENT_INTERFACE,
|
|
"Release");
|
|
l_dbus_message_set_arguments(msg, "o", device_path);
|
|
l_dbus_message_set_no_reply(msg, true);
|
|
|
|
l_dbus_send(dbus_get_bus(), msg);
|
|
}
|
|
|
|
static void signal_agent_free(void *data)
|
|
{
|
|
struct signal_agent *agent = data;
|
|
|
|
l_free(agent->owner);
|
|
l_free(agent->path);
|
|
l_dbus_remove_watch(dbus_get_bus(), agent->disconnect_watch);
|
|
l_free(agent);
|
|
}
|
|
|
|
static void signal_agent_disconnect(struct l_dbus *dbus, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
l_debug("signal_agent %s disconnected", station->signal_agent->owner);
|
|
|
|
l_idle_oneshot(signal_agent_free, station->signal_agent, NULL);
|
|
station->signal_agent = NULL;
|
|
|
|
netdev_set_rssi_report_levels(station->netdev, NULL, 0);
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_signal_agent_register(
|
|
struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
const char *path, *sender;
|
|
struct l_dbus_message_iter level_iter;
|
|
int8_t levels[16];
|
|
int err;
|
|
int16_t val;
|
|
size_t count = 0;
|
|
|
|
if (station->signal_agent)
|
|
return dbus_error_already_exists(message);
|
|
|
|
l_debug("signal agent register called");
|
|
|
|
if (!l_dbus_message_get_arguments(message, "oan", &path, &level_iter))
|
|
return dbus_error_invalid_args(message);
|
|
|
|
while (l_dbus_message_iter_next_entry(&level_iter, &val)) {
|
|
if (count >= L_ARRAY_SIZE(levels) || val > 127 || val < -127)
|
|
return dbus_error_invalid_args(message);
|
|
|
|
levels[count++] = val;
|
|
}
|
|
|
|
if (count < 1)
|
|
return dbus_error_invalid_args(message);
|
|
|
|
err = netdev_set_rssi_report_levels(station->netdev, levels, count);
|
|
if (err == -ENOTSUP)
|
|
return dbus_error_not_supported(message);
|
|
else if (err < 0)
|
|
return dbus_error_failed(message);
|
|
|
|
sender = l_dbus_message_get_sender(message);
|
|
|
|
station->signal_agent = l_new(struct signal_agent, 1);
|
|
station->signal_agent->owner = l_strdup(sender);
|
|
station->signal_agent->path = l_strdup(path);
|
|
station->signal_agent->disconnect_watch =
|
|
l_dbus_add_disconnect_watch(dbus, sender,
|
|
signal_agent_disconnect,
|
|
station, NULL);
|
|
|
|
l_debug("agent %s path %s", sender, path);
|
|
|
|
/*
|
|
* TODO: send an initial notification in a oneshot idle callback,
|
|
* if state is connected.
|
|
*/
|
|
|
|
return l_dbus_message_new_method_return(message);
|
|
}
|
|
|
|
static struct l_dbus_message *station_dbus_signal_agent_unregister(
|
|
struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
const char *path, *sender;
|
|
|
|
if (!station->signal_agent)
|
|
return dbus_error_failed(message);
|
|
|
|
l_debug("signal agent unregister");
|
|
|
|
if (!l_dbus_message_get_arguments(message, "o", &path))
|
|
return dbus_error_invalid_args(message);
|
|
|
|
if (strcmp(station->signal_agent->path, path))
|
|
return dbus_error_not_found(message);
|
|
|
|
sender = l_dbus_message_get_sender(message);
|
|
|
|
if (strcmp(station->signal_agent->owner, sender))
|
|
return dbus_error_not_found(message);
|
|
|
|
signal_agent_free(station->signal_agent);
|
|
station->signal_agent = NULL;
|
|
|
|
netdev_set_rssi_report_levels(station->netdev, NULL, 0);
|
|
|
|
return l_dbus_message_new_method_return(message);
|
|
}
|
|
|
|
static bool station_property_get_connected_network(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
struct l_dbus_message_builder *builder,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
if (!station->connected_network)
|
|
return false;
|
|
|
|
l_dbus_message_builder_append_basic(builder, 'o',
|
|
network_get_path(station->connected_network));
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool station_property_get_scanning(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
struct l_dbus_message_builder *builder,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
bool scanning = station->scanning;
|
|
|
|
l_dbus_message_builder_append_basic(builder, 'b', &scanning);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool station_property_get_state(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
struct l_dbus_message_builder *builder,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
const char *statestr;
|
|
|
|
if (!station_is_busy(station))
|
|
/* Special case. For now we treat AUTOCONNECT as disconnected */
|
|
statestr = "disconnected";
|
|
else
|
|
statestr = station_state_to_string(station->state);
|
|
|
|
l_dbus_message_builder_append_basic(builder, 's', statestr);
|
|
return true;
|
|
}
|
|
|
|
void station_foreach(station_foreach_func_t func, void *user_data)
|
|
{
|
|
const struct l_queue_entry *entry;
|
|
|
|
for (entry = l_queue_get_entries(station_list); entry;
|
|
entry = entry->next) {
|
|
struct station *station = entry->data;
|
|
|
|
func(station, user_data);
|
|
}
|
|
}
|
|
|
|
struct station *station_find(uint32_t ifindex)
|
|
{
|
|
const struct l_queue_entry *entry;
|
|
|
|
for (entry = l_queue_get_entries(station_list); entry;
|
|
entry = entry->next) {
|
|
struct station *station = entry->data;
|
|
|
|
if (netdev_get_ifindex(station->netdev) == ifindex)
|
|
return station;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct network_foreach_data {
|
|
station_network_foreach_func_t func;
|
|
void *user_data;
|
|
};
|
|
|
|
static void network_foreach(const void *key, void *value, void *user_data)
|
|
{
|
|
struct network_foreach_data *data = user_data;
|
|
struct network *network = value;
|
|
|
|
data->func(network, data->user_data);
|
|
}
|
|
|
|
void station_network_foreach(struct station *station,
|
|
station_network_foreach_func_t func,
|
|
void *user_data)
|
|
{
|
|
struct network_foreach_data data = {
|
|
.func = func,
|
|
.user_data = user_data,
|
|
};
|
|
|
|
l_hashmap_foreach(station->networks, network_foreach, &data);
|
|
}
|
|
|
|
struct l_queue *station_get_bss_list(struct station *station)
|
|
{
|
|
return station->bss_list;
|
|
}
|
|
|
|
struct scan_bss *station_get_connected_bss(struct station *station)
|
|
{
|
|
return station->connected_bss;
|
|
}
|
|
|
|
int station_hide_network(struct station *station, struct network *network)
|
|
{
|
|
const char *path = network_get_path(network);
|
|
struct scan_bss *bss;
|
|
|
|
l_debug("%s", path);
|
|
|
|
if (station->connected_network == network)
|
|
return -EBUSY;
|
|
|
|
if (!l_hashmap_lookup(station->networks, path))
|
|
return -ENOENT;
|
|
|
|
l_queue_remove(station->networks_sorted, network);
|
|
l_hashmap_remove(station->networks, path);
|
|
|
|
while ((bss = network_bss_list_pop(network))) {
|
|
memset(bss->ssid, 0, bss->ssid_len);
|
|
l_queue_remove_if(station->hidden_bss_list_sorted,
|
|
bss_match_bssid, bss->addr);
|
|
l_queue_insert(station->hidden_bss_list_sorted, bss,
|
|
bss_signal_strength_compare, NULL);
|
|
}
|
|
|
|
network_remove(network, -ESRCH);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void station_add_one_freq(uint32_t freq, void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
if (freq > 3000)
|
|
scan_freq_set_add(station->scan_freqs_order[1], freq);
|
|
else if (!scan_freq_set_contains(station->scan_freqs_order[0], freq))
|
|
scan_freq_set_add(station->scan_freqs_order[2], freq);
|
|
}
|
|
|
|
static void station_fill_scan_freq_subsets(struct station *station)
|
|
{
|
|
const struct scan_freq_set *supported =
|
|
wiphy_get_supported_freqs(station->wiphy);
|
|
|
|
/*
|
|
* Scan the 2.4GHz "social channels" first, 5GHz second, if supported,
|
|
* all other 2.4GHz channels last. To be refined as needed.
|
|
*/
|
|
station->scan_freqs_order[0] = scan_freq_set_new();
|
|
scan_freq_set_add(station->scan_freqs_order[0], 2412);
|
|
scan_freq_set_add(station->scan_freqs_order[0], 2437);
|
|
scan_freq_set_add(station->scan_freqs_order[0], 2462);
|
|
|
|
station->scan_freqs_order[1] = scan_freq_set_new();
|
|
station->scan_freqs_order[2] = scan_freq_set_new();
|
|
scan_freq_set_foreach(supported, station_add_one_freq, station);
|
|
|
|
if (scan_freq_set_isempty(station->scan_freqs_order[1])) {
|
|
scan_freq_set_free(station->scan_freqs_order[1]);
|
|
station->scan_freqs_order[1] = station->scan_freqs_order[2];
|
|
station->scan_freqs_order[2] = NULL;
|
|
}
|
|
}
|
|
|
|
static struct station *station_create(struct netdev *netdev)
|
|
{
|
|
struct station *station;
|
|
struct l_dbus *dbus = dbus_get_bus();
|
|
|
|
station = l_new(struct station, 1);
|
|
watchlist_init(&station->state_watches, NULL);
|
|
|
|
station->bss_list = l_queue_new();
|
|
station->hidden_bss_list_sorted = l_queue_new();
|
|
station->networks = l_hashmap_new();
|
|
l_hashmap_set_hash_function(station->networks, l_str_hash);
|
|
l_hashmap_set_compare_function(station->networks,
|
|
(l_hashmap_compare_func_t) strcmp);
|
|
station->networks_sorted = l_queue_new();
|
|
|
|
station->wiphy = netdev_get_wiphy(netdev);
|
|
station->netdev = netdev;
|
|
|
|
l_queue_push_head(station_list, station);
|
|
|
|
station_set_autoconnect(station, true);
|
|
|
|
l_dbus_object_add_interface(dbus, netdev_get_path(netdev),
|
|
IWD_STATION_INTERFACE, station);
|
|
|
|
if (netconfig_enabled)
|
|
station->netconfig = netconfig_new(netdev_get_ifindex(netdev));
|
|
|
|
station->anqp_pending = l_queue_new();
|
|
|
|
station_fill_scan_freq_subsets(station);
|
|
|
|
return station;
|
|
}
|
|
|
|
static void station_free(struct station *station)
|
|
{
|
|
l_debug("");
|
|
|
|
if (!l_queue_remove(station_list, station))
|
|
return;
|
|
|
|
if (station->connected_bss)
|
|
netdev_disconnect(station->netdev, NULL, NULL);
|
|
|
|
l_dbus_object_remove_interface(dbus_get_bus(),
|
|
netdev_get_path(station->netdev),
|
|
IWD_STATION_DIAGNOSTIC_INTERFACE);
|
|
|
|
if (station->netconfig) {
|
|
netconfig_destroy(station->netconfig);
|
|
station->netconfig = NULL;
|
|
}
|
|
|
|
periodic_scan_stop(station);
|
|
|
|
if (station->signal_agent) {
|
|
station_signal_agent_release(station->signal_agent,
|
|
netdev_get_path(station->netdev));
|
|
signal_agent_free(station->signal_agent);
|
|
}
|
|
|
|
if (station->connect_pending)
|
|
dbus_pending_reply(&station->connect_pending,
|
|
dbus_error_aborted(station->connect_pending));
|
|
|
|
if (station->hidden_pending)
|
|
dbus_pending_reply(&station->hidden_pending,
|
|
dbus_error_aborted(station->hidden_pending));
|
|
|
|
if (station->disconnect_pending)
|
|
dbus_pending_reply(&station->disconnect_pending,
|
|
dbus_error_aborted(station->disconnect_pending));
|
|
|
|
if (station->scan_pending)
|
|
dbus_pending_reply(&station->scan_pending,
|
|
dbus_error_aborted(station->scan_pending));
|
|
|
|
if (station->dbus_scan_id)
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->dbus_scan_id);
|
|
|
|
if (station->quick_scan_id)
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->quick_scan_id);
|
|
|
|
if (station->hidden_network_scan_id)
|
|
scan_cancel(netdev_get_wdev_id(station->netdev),
|
|
station->hidden_network_scan_id);
|
|
|
|
station_roam_state_clear(station);
|
|
|
|
l_queue_destroy(station->networks_sorted, NULL);
|
|
l_hashmap_destroy(station->networks, network_free);
|
|
l_queue_destroy(station->bss_list, bss_free);
|
|
l_queue_destroy(station->hidden_bss_list_sorted, NULL);
|
|
l_queue_destroy(station->autoconnect_list, l_free);
|
|
|
|
watchlist_destroy(&station->state_watches);
|
|
|
|
l_queue_destroy(station->anqp_pending, remove_anqp);
|
|
|
|
scan_freq_set_free(station->scan_freqs_order[0]);
|
|
scan_freq_set_free(station->scan_freqs_order[1]);
|
|
|
|
if (station->scan_freqs_order[2])
|
|
scan_freq_set_free(station->scan_freqs_order[2]);
|
|
|
|
l_free(station);
|
|
}
|
|
|
|
static void station_setup_interface(struct l_dbus_interface *interface)
|
|
{
|
|
l_dbus_interface_method(interface, "ConnectHiddenNetwork", 0,
|
|
station_dbus_connect_hidden_network,
|
|
"", "s", "name");
|
|
l_dbus_interface_method(interface, "Disconnect", 0,
|
|
station_dbus_disconnect, "", "");
|
|
l_dbus_interface_method(interface, "GetOrderedNetworks", 0,
|
|
station_dbus_get_networks, "a(on)", "",
|
|
"networks");
|
|
l_dbus_interface_method(interface, "GetHiddenAccessPoints", 0,
|
|
station_dbus_get_hidden_access_points,
|
|
"a(sns)", "",
|
|
"accesspoints");
|
|
l_dbus_interface_method(interface, "Scan", 0,
|
|
station_dbus_scan, "", "");
|
|
l_dbus_interface_method(interface, "RegisterSignalLevelAgent", 0,
|
|
station_dbus_signal_agent_register,
|
|
"", "oan", "path", "levels");
|
|
l_dbus_interface_method(interface, "UnregisterSignalLevelAgent", 0,
|
|
station_dbus_signal_agent_unregister,
|
|
"", "o", "path");
|
|
|
|
l_dbus_interface_property(interface, "ConnectedNetwork", 0, "o",
|
|
station_property_get_connected_network,
|
|
NULL);
|
|
l_dbus_interface_property(interface, "Scanning", 0, "b",
|
|
station_property_get_scanning, NULL);
|
|
l_dbus_interface_property(interface, "State", 0, "s",
|
|
station_property_get_state, NULL);
|
|
}
|
|
|
|
static void station_destroy_interface(void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
|
|
station_free(station);
|
|
}
|
|
|
|
static void station_get_diagnostic_cb(
|
|
const struct diagnostic_station_info *info,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct l_dbus_message *reply;
|
|
struct l_dbus_message_builder *builder;
|
|
struct handshake_state *hs = netdev_get_handshake(station->netdev);
|
|
|
|
if (!info) {
|
|
reply = dbus_error_aborted(station->get_station_pending);
|
|
goto done;
|
|
}
|
|
|
|
reply = l_dbus_message_new_method_return(station->get_station_pending);
|
|
|
|
builder = l_dbus_message_builder_new(reply);
|
|
|
|
l_dbus_message_builder_enter_array(builder, "{sv}");
|
|
|
|
dbus_append_dict_basic(builder, "ConnectedBss", 's',
|
|
util_address_to_string(info->addr));
|
|
dbus_append_dict_basic(builder, "Frequency", 'u',
|
|
&station->connected_bss->frequency);
|
|
dbus_append_dict_basic(builder, "Security", 's',
|
|
diagnostic_akm_suite_to_security(hs->akm_suite,
|
|
hs->wpa_ie));
|
|
|
|
diagnostic_info_to_dict(info, builder);
|
|
|
|
l_dbus_message_builder_leave_array(builder);
|
|
l_dbus_message_builder_finalize(builder);
|
|
l_dbus_message_builder_destroy(builder);
|
|
|
|
done:
|
|
dbus_pending_reply(&station->get_station_pending, reply);
|
|
}
|
|
|
|
static void station_get_diagnostic_destroy(void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
struct l_dbus_message *reply;
|
|
|
|
if (station->get_station_pending) {
|
|
reply = dbus_error_aborted(station->get_station_pending);
|
|
dbus_pending_reply(&station->get_station_pending, reply);
|
|
}
|
|
}
|
|
|
|
static struct l_dbus_message *station_get_diagnostics(struct l_dbus *dbus,
|
|
struct l_dbus_message *message,
|
|
void *user_data)
|
|
{
|
|
struct station *station = user_data;
|
|
int ret;
|
|
|
|
ret = netdev_get_current_station(station->netdev,
|
|
station_get_diagnostic_cb, station,
|
|
station_get_diagnostic_destroy);
|
|
if (ret < 0)
|
|
return dbus_error_from_errno(ret, message);
|
|
|
|
station->get_station_pending = l_dbus_message_ref(message);
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static void station_setup_diagnostic_interface(
|
|
struct l_dbus_interface *interface)
|
|
{
|
|
l_dbus_interface_method(interface, "GetDiagnostics", 0,
|
|
station_get_diagnostics, "a{sv}", "",
|
|
"diagnostics");
|
|
}
|
|
|
|
static void station_destroy_diagnostic_interface(void *user_data)
|
|
{
|
|
}
|
|
|
|
static void ap_roam_frame_event(const struct mmpdu_header *hdr,
|
|
const void *body, size_t body_len,
|
|
int rssi, void *user_data)
|
|
{
|
|
uint32_t ifindex = L_PTR_TO_UINT(user_data);
|
|
struct station *station = station_find(ifindex);
|
|
|
|
if (!station)
|
|
return;
|
|
|
|
station_ap_directed_roam(station, hdr, body, body_len);
|
|
}
|
|
|
|
static void add_frame_watches(struct netdev *netdev)
|
|
{
|
|
static const uint8_t action_ap_roam_prefix[2] = { 0x0a, 0x07 };
|
|
|
|
/*
|
|
* register for AP roam transition watch
|
|
*/
|
|
frame_watch_add(netdev_get_wdev_id(netdev), 0, 0x00d0,
|
|
action_ap_roam_prefix, sizeof(action_ap_roam_prefix),
|
|
ap_roam_frame_event,
|
|
L_UINT_TO_PTR(netdev_get_ifindex(netdev)), NULL);
|
|
}
|
|
|
|
static void station_netdev_watch(struct netdev *netdev,
|
|
enum netdev_watch_event event, void *userdata)
|
|
{
|
|
switch (event) {
|
|
case NETDEV_WATCH_EVENT_NEW:
|
|
if (netdev_get_iftype(netdev) == NETDEV_IFTYPE_STATION) {
|
|
add_frame_watches(netdev);
|
|
|
|
if (netdev_get_is_up(netdev))
|
|
station_create(netdev);
|
|
}
|
|
break;
|
|
case NETDEV_WATCH_EVENT_UP:
|
|
if (netdev_get_iftype(netdev) == NETDEV_IFTYPE_STATION)
|
|
station_create(netdev);
|
|
|
|
break;
|
|
case NETDEV_WATCH_EVENT_DOWN:
|
|
case NETDEV_WATCH_EVENT_DEL:
|
|
l_dbus_object_remove_interface(dbus_get_bus(),
|
|
netdev_get_path(netdev),
|
|
IWD_STATION_INTERFACE);
|
|
break;
|
|
case NETDEV_WATCH_EVENT_IFTYPE_CHANGE:
|
|
if (netdev_get_iftype(netdev) == NETDEV_IFTYPE_STATION)
|
|
add_frame_watches(netdev);
|
|
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int station_init(void)
|
|
{
|
|
station_list = l_queue_new();
|
|
netdev_watch = netdev_watch_add(station_netdev_watch, NULL, NULL);
|
|
l_dbus_register_interface(dbus_get_bus(), IWD_STATION_INTERFACE,
|
|
station_setup_interface,
|
|
station_destroy_interface, false);
|
|
l_dbus_register_interface(dbus_get_bus(),
|
|
IWD_STATION_DIAGNOSTIC_INTERFACE,
|
|
station_setup_diagnostic_interface,
|
|
station_destroy_diagnostic_interface,
|
|
false);
|
|
|
|
if (!l_settings_get_uint(iwd_get_config(), "General",
|
|
"ManagementFrameProtection",
|
|
&mfp_setting))
|
|
mfp_setting = 1;
|
|
|
|
if (mfp_setting > 2) {
|
|
l_error("Invalid [General].ManagementFrameProtection value: %d,"
|
|
" using default of 1", mfp_setting);
|
|
mfp_setting = 1;
|
|
}
|
|
|
|
if (!l_settings_get_uint(iwd_get_config(), "General",
|
|
"RoamRetryInterval",
|
|
&roam_retry_interval))
|
|
roam_retry_interval = 60;
|
|
|
|
if (roam_retry_interval > INT_MAX)
|
|
roam_retry_interval = INT_MAX;
|
|
|
|
if (!l_settings_get_bool(iwd_get_config(), "General", "DisableANQP",
|
|
&anqp_disabled))
|
|
anqp_disabled = true;
|
|
|
|
if (!l_settings_get_bool(iwd_get_config(), "General",
|
|
"EnableNetworkConfiguration",
|
|
&netconfig_enabled)) {
|
|
if (l_settings_get_bool(iwd_get_config(), "General",
|
|
"enable_network_config",
|
|
&netconfig_enabled))
|
|
l_warn("[General].enable_network_config is deprecated,"
|
|
" use [General].EnableNetworkConfiguration");
|
|
else
|
|
netconfig_enabled = false;
|
|
}
|
|
|
|
if (!netconfig_enabled)
|
|
l_info("station: Network configuration is disabled.");
|
|
|
|
watchlist_init(&anqp_watches, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void station_exit(void)
|
|
{
|
|
l_dbus_unregister_interface(dbus_get_bus(),
|
|
IWD_STATION_DIAGNOSTIC_INTERFACE);
|
|
l_dbus_unregister_interface(dbus_get_bus(), IWD_STATION_INTERFACE);
|
|
netdev_watch_remove(netdev_watch);
|
|
l_queue_destroy(station_list, NULL);
|
|
station_list = NULL;
|
|
watchlist_destroy(&anqp_watches);
|
|
}
|
|
|
|
IWD_MODULE(station, station_init, station_exit)
|
|
IWD_MODULE_DEPENDS(station, netdev);
|
|
IWD_MODULE_DEPENDS(station, netconfig)
|