2006 lines
49 KiB
C
2006 lines
49 KiB
C
/*
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*
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* Wireless daemon for Linux
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*
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* Copyright (C) 2013-2014 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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#include <stdlib.h>
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#include <stdio.h>
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#include <errno.h>
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#include <sys/socket.h>
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#include <linux/if.h>
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#include <linux/if_packet.h>
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#include <linux/if_ether.h>
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#include <ell/ell.h>
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#include "linux/nl80211.h"
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#include "src/iwd.h"
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#include "src/ie.h"
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#include "src/wiphy.h"
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#include "src/dbus.h"
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#include "src/scan.h"
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#include "src/util.h"
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#include "src/common.h"
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#include "src/eapol.h"
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#include "src/agent.h"
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#include "src/crypto.h"
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#include "src/netdev.h"
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#include "src/mpdu.h"
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#include "src/storage.h"
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#include "src/network.h"
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#include "src/device.h"
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static struct l_genl_family *nl80211 = NULL;
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enum device_state {
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DEVICE_STATE_DISCONNECTED = 0, /* Disconnected, no auto-connect */
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DEVICE_STATE_AUTOCONNECT, /* Disconnected, try auto-connect */
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DEVICE_STATE_CONNECTING, /* Connecting */
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DEVICE_STATE_CONNECTED,
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DEVICE_STATE_DISCONNECTING,
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};
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struct device {
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uint32_t index;
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char name[IFNAMSIZ];
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uint32_t type;
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uint8_t addr[ETH_ALEN];
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enum device_state state;
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struct l_queue *bss_list;
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struct l_queue *old_bss_list;
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struct l_dbus_message *scan_pending;
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struct l_hashmap *networks;
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struct scan_bss *connected_bss;
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struct network *connected_network;
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struct l_queue *autoconnect_list;
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struct l_dbus_message *connect_pending;
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struct l_dbus_message *disconnect_pending;
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struct l_io *eapol_io;
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uint32_t pairwise_new_key_cmd_id;
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uint32_t pairwise_set_key_cmd_id;
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uint32_t group_new_key_cmd_id;
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struct wiphy *wiphy;
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};
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struct wiphy {
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uint32_t id;
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char name[20];
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uint32_t feature_flags;
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struct l_queue *netdev_list;
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bool support_scheduled_scan:1;
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bool support_rekey_offload:1;
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uint16_t pairwise_ciphers;
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struct scan_freq_set *supported_freqs;
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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 struct l_queue *wiphy_list = NULL;
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static bool new_scan_results(uint32_t wiphy_id, uint32_t ifindex,
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struct l_queue *bss_list, void *userdata);
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static bool eapol_read(struct l_io *io, void *user_data)
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{
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struct device *netdev = user_data;
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int fd = l_io_get_fd(io);
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struct sockaddr_ll sll;
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socklen_t sll_len;
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ssize_t bytes;
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uint8_t frame[2304]; /* IEEE Std 802.11 ch. 8.2.3 */
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memset(&sll, 0, sizeof(sll));
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sll_len = sizeof(sll);
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bytes = recvfrom(fd, frame, sizeof(frame), 0,
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(struct sockaddr *) &sll, &sll_len);
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if (bytes <= 0) {
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l_error("EAPoL read socket: %s", strerror(errno));
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return false;
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}
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__eapol_rx_packet(netdev->index, netdev->addr, sll.sll_addr,
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frame, bytes);
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return true;
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}
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static const char *iwd_network_get_path(struct device *device,
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const uint8_t *ssid, size_t ssid_len,
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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/", device_get_path(device));
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for (i = 0; i < ssid_len && 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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static const char *device_state_to_string(enum device_state state)
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{
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switch (state) {
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case DEVICE_STATE_DISCONNECTED:
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return "disconnected";
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case DEVICE_STATE_AUTOCONNECT:
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return "autoconnect";
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case DEVICE_STATE_CONNECTING:
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return "connecting";
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case DEVICE_STATE_CONNECTED:
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return "connected";
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case DEVICE_STATE_DISCONNECTING:
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return "disconnecting";
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}
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return "invalid";
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}
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struct network *device_get_connected_network(struct device *device)
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{
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return device->connected_network;
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}
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bool device_is_busy(struct device *device)
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{
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if (device->state != DEVICE_STATE_DISCONNECTED &&
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device->state != DEVICE_STATE_AUTOCONNECT)
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return true;
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return false;
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}
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struct wiphy *device_get_wiphy(struct device *device)
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{
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return device->wiphy;
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}
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static void device_enter_state(struct device *device, enum device_state state)
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{
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l_debug("Old State: %s, new state: %s",
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device_state_to_string(device->state),
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device_state_to_string(state));
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switch (state) {
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case DEVICE_STATE_AUTOCONNECT:
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scan_periodic_start(device->index, new_scan_results, device);
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break;
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case DEVICE_STATE_DISCONNECTED:
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scan_periodic_stop(device->index);
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break;
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case DEVICE_STATE_CONNECTED:
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scan_periodic_stop(device->index);
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break;
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case DEVICE_STATE_CONNECTING:
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break;
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case DEVICE_STATE_DISCONNECTING:
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break;
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}
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device->state = state;
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}
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static void device_disassociated(struct device *device)
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{
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struct network *network = device->connected_network;
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struct l_dbus *dbus = dbus_get_bus();
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network_settings_close(network);
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device->connected_bss = NULL;
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device->connected_network = NULL;
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device_enter_state(device, DEVICE_STATE_AUTOCONNECT);
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l_dbus_property_changed(dbus, device_get_path(device),
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IWD_DEVICE_INTERFACE, "ConnectedNetwork");
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l_dbus_property_changed(dbus, network_get_path(network),
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IWD_NETWORK_INTERFACE, "Connected");
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}
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static void device_lost_beacon(struct device *device)
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{
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if (device->connect_pending)
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dbus_pending_reply(&device->connect_pending,
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dbus_error_failed(device->connect_pending));
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if (device->connected_network)
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device_disassociated(device);
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}
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static void genl_connect_cb(struct l_genl_msg *msg, void *user_data)
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{
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struct device *device = user_data;
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if (l_genl_msg_get_error(msg) < 0) {
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if (device->connect_pending)
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dbus_pending_reply(&device->connect_pending,
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dbus_error_failed(device->connect_pending));
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device_disassociated(device);
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}
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}
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enum ie_rsn_cipher_suite wiphy_select_cipher(struct wiphy *wiphy, uint16_t mask)
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{
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mask &= wiphy->pairwise_ciphers;
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/* CCMP is our first choice, TKIP second */
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if (mask & IE_RSN_CIPHER_SUITE_CCMP)
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return IE_RSN_CIPHER_SUITE_CCMP;
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if (mask & IE_RSN_CIPHER_SUITE_TKIP)
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return IE_RSN_CIPHER_SUITE_TKIP;
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return 0;
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}
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static int mlme_authenticate_cmd(struct network *network, struct scan_bss *bss)
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{
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struct device *device = network_get_device(network);
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const char *ssid = network_get_ssid(network);
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uint32_t auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_AUTHENTICATE, 512);
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msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
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msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4, &bss->frequency);
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msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, bss->addr);
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msg_append_attr(msg, NL80211_ATTR_SSID, strlen(ssid), ssid);
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msg_append_attr(msg, NL80211_ATTR_AUTH_TYPE, 4, &auth_type);
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l_genl_family_send(nl80211, msg, genl_connect_cb, device, NULL);
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return 0;
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}
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void device_connect_network(struct device *device, struct network *network,
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struct scan_bss *bss,
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struct l_dbus_message *message)
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{
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struct l_dbus *dbus = dbus_get_bus();
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device->connect_pending = l_dbus_message_ref(message);
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device->connected_bss = bss;
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device->connected_network = network;
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device_enter_state(device, DEVICE_STATE_CONNECTING);
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mlme_authenticate_cmd(network, bss);
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l_dbus_property_changed(dbus, device_get_path(device),
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IWD_DEVICE_INTERFACE, "ConnectedNetwork");
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l_dbus_property_changed(dbus, network_get_path(network),
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IWD_NETWORK_INTERFACE, "Connected");
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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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l_debug("Freeing BSS %02X:%02X:%02X:%02X:%02X:%02X",
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bss->addr[0], bss->addr[1], bss->addr[2],
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bss->addr[3], bss->addr[4], bss->addr[5]);
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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);
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}
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const char *device_get_path(struct device *device)
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{
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static char path[12];
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snprintf(path, sizeof(path), "/%u", device->index);
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return path;
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}
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const uint8_t *device_get_address(struct device *device)
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{
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return device->addr;
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}
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uint32_t device_get_ifindex(struct device *device)
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{
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return device->index;
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}
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void __iwd_device_foreach(iwd_device_foreach_func func, void *user_data)
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{
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const struct l_queue_entry *wiphy_entry;
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for (wiphy_entry = l_queue_get_entries(wiphy_list); wiphy_entry;
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wiphy_entry = wiphy_entry->next) {
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struct wiphy *wiphy = wiphy_entry->data;
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const struct l_queue_entry *netdev_entry;
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netdev_entry = l_queue_get_entries(wiphy->netdev_list);
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while (netdev_entry) {
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struct device *device = netdev_entry->data;
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func(device, user_data);
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netdev_entry = netdev_entry->next;
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}
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}
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}
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static void device_scan_triggered(int err, void *user_data)
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{
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struct device *device = user_data;
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struct l_dbus_message *reply;
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l_debug("device_scan_triggered: %i", err);
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if (err < 0) {
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dbus_pending_reply(&device->scan_pending,
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dbus_error_failed(device->scan_pending));
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return;
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}
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l_debug("Scan triggered for netdev %s", device->name);
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reply = l_dbus_message_new_method_return(device->scan_pending);
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l_dbus_message_set_arguments(reply, "");
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dbus_pending_reply(&device->scan_pending, reply);
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}
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static struct l_dbus_message *device_scan(struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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struct device *device = user_data;
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l_debug("Scan called from DBus");
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if (device->scan_pending)
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return dbus_error_busy(message);
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device->scan_pending = l_dbus_message_ref(message);
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if (!scan_passive(device->index, device_scan_triggered,
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new_scan_results, device, NULL))
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return dbus_error_failed(message);
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return NULL;
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}
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static void device_disconnect_cb(struct l_genl_msg *msg, void *user_data)
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{
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struct device *device = user_data;
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struct l_dbus_message *reply;
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if (l_genl_msg_get_error(msg) < 0) {
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dbus_pending_reply(&device->disconnect_pending,
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dbus_error_failed(device->disconnect_pending));
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return;
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}
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device_disassociated(device);
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reply = l_dbus_message_new_method_return(device->disconnect_pending);
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l_dbus_message_set_arguments(reply, "");
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dbus_pending_reply(&device->disconnect_pending, reply);
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}
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static struct l_dbus_message *device_disconnect(struct l_dbus *dbus,
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struct l_dbus_message *message,
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void *user_data)
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{
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struct device *device = user_data;
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struct l_genl_msg *msg;
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uint16_t reason_code = MPDU_REASON_CODE_DEAUTH_LEAVING;
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enum security security;
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l_debug("");
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if (device->state == DEVICE_STATE_CONNECTING ||
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device->state == DEVICE_STATE_DISCONNECTING)
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return dbus_error_busy(message);
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if (!device->connected_bss)
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return dbus_error_not_connected(message);
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security = network_get_security(device->connected_network);
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if (security == SECURITY_PSK || security == SECURITY_8021X)
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eapol_cancel(device->index);
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msg = l_genl_msg_new_sized(NL80211_CMD_DEAUTHENTICATE, 512);
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msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
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msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
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msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN,
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device->connected_bss->addr);
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l_genl_family_send(nl80211, msg, device_disconnect_cb, device, NULL);
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device_enter_state(device, DEVICE_STATE_DISCONNECTING);
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device->disconnect_pending = l_dbus_message_ref(message);
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return NULL;
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}
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static bool device_property_get_name(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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l_dbus_message_builder_append_basic(builder, 's', device->name);
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return true;
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}
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static bool device_property_get_address(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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l_dbus_message_builder_append_basic(builder, 's', device->addr);
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return true;
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}
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static bool device_property_get_connected_network(struct l_dbus *dbus,
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struct l_dbus_message *message,
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struct l_dbus_message_builder *builder,
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void *user_data)
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{
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struct device *device = user_data;
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if (!device->connected_network)
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return false;
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l_dbus_message_builder_append_basic(builder, 'o',
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network_get_path(device->connected_network));
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return true;
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}
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static void setup_device_interface(struct l_dbus_interface *interface)
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{
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l_dbus_interface_method(interface, "Scan", 0,
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device_scan, "", "");
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l_dbus_interface_method(interface, "Disconnect", 0,
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device_disconnect, "", "");
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l_dbus_interface_property(interface, "Name", 0, "s",
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device_property_get_name, NULL);
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l_dbus_interface_property(interface, "Address", 0, "s",
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device_property_get_address, NULL);
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l_dbus_interface_property(interface, "ConnectedNetwork", 0, "o",
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device_property_get_connected_network,
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NULL);
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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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return !memcmp(bss_a->addr, bss_b->addr, sizeof(bss_a->addr));
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}
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|
|
static void device_free(void *data)
|
|
{
|
|
struct device *device = data;
|
|
struct l_dbus *dbus;
|
|
|
|
if (device->scan_pending)
|
|
dbus_pending_reply(&device->scan_pending,
|
|
dbus_error_aborted(device->scan_pending));
|
|
|
|
if (device->connect_pending)
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_aborted(device->connect_pending));
|
|
|
|
__device_watch_call_removed(device);
|
|
|
|
dbus = dbus_get_bus();
|
|
l_dbus_unregister_object(dbus, device_get_path(device));
|
|
|
|
l_debug("Freeing interface %s", device->name);
|
|
|
|
l_hashmap_destroy(device->networks, network_free);
|
|
|
|
l_queue_destroy(device->bss_list, bss_free);
|
|
l_queue_destroy(device->old_bss_list, bss_free);
|
|
l_queue_destroy(device->autoconnect_list, l_free);
|
|
l_io_destroy(device->eapol_io);
|
|
|
|
scan_ifindex_remove(device->index);
|
|
netdev_set_linkmode_and_operstate(device->index, 0, IF_OPER_DOWN,
|
|
NULL, NULL);
|
|
|
|
l_free(device);
|
|
}
|
|
|
|
static bool device_match(const void *a, const void *b)
|
|
{
|
|
const struct device *device = a;
|
|
uint32_t index = L_PTR_TO_UINT(b);
|
|
|
|
return (device->index == index);
|
|
}
|
|
|
|
static void device_autoconnect_next(struct device *device)
|
|
{
|
|
struct autoconnect_entry *entry;
|
|
int r;
|
|
|
|
while ((entry = l_queue_pop_head(device->autoconnect_list))) {
|
|
l_debug("Considering autoconnecting to BSS '%s' with SSID: %s,"
|
|
" freq: %u, rank: %u, strength: %i",
|
|
scan_bss_address_to_string(entry->bss),
|
|
network_get_ssid(entry->network),
|
|
entry->bss->frequency, entry->rank,
|
|
entry->bss->signal_strength);
|
|
|
|
/* TODO: Blacklist the network from auto-connect */
|
|
r = network_autoconnect(entry->network, entry->bss);
|
|
l_free(entry);
|
|
|
|
if (!r)
|
|
return;
|
|
}
|
|
}
|
|
|
|
static void wiphy_free(void *data)
|
|
{
|
|
struct wiphy *wiphy = data;
|
|
|
|
l_debug("Freeing wiphy %s", wiphy->name);
|
|
|
|
scan_freq_set_free(wiphy->supported_freqs);
|
|
l_queue_destroy(wiphy->netdev_list, device_free);
|
|
l_free(wiphy);
|
|
}
|
|
|
|
static bool wiphy_match(const void *a, const void *b)
|
|
{
|
|
const struct wiphy *wiphy = a;
|
|
uint32_t id = L_PTR_TO_UINT(b);
|
|
|
|
return (wiphy->id == id);
|
|
}
|
|
|
|
static void deauthenticate_cb(struct l_genl_msg *msg,
|
|
void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
|
|
/* If we were inside a .Connect(), it has failed */
|
|
if (device->connect_pending)
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_failed(device->connect_pending));
|
|
|
|
device_disassociated(device);
|
|
}
|
|
|
|
static void setting_keys_failed(struct device *device, uint16_t reason_code)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
/*
|
|
* Something went wrong with our new_key, set_key, new_key,
|
|
* set_station, set_oper_state transaction
|
|
*
|
|
* Cancel all pending commands, then de-authenticate
|
|
*/
|
|
l_genl_family_cancel(nl80211, device->pairwise_new_key_cmd_id);
|
|
device->pairwise_new_key_cmd_id = 0;
|
|
|
|
l_genl_family_cancel(nl80211, device->pairwise_set_key_cmd_id);
|
|
device->pairwise_set_key_cmd_id = 0;
|
|
|
|
l_genl_family_cancel(nl80211, device->group_new_key_cmd_id);
|
|
device->group_new_key_cmd_id = 0;
|
|
|
|
eapol_cancel(device->index);
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_DEAUTHENTICATE, 512);
|
|
msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
|
|
msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN,
|
|
device->connected_bss->addr);
|
|
l_genl_family_send(nl80211, msg, deauthenticate_cb, device, NULL);
|
|
device_enter_state(device, DEVICE_STATE_DISCONNECTING);
|
|
}
|
|
|
|
static void handshake_failed(uint32_t ifindex,
|
|
const uint8_t *aa, const uint8_t *spa,
|
|
uint16_t reason_code, void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
struct l_genl_msg *msg;
|
|
|
|
l_error("4-Way Handshake failed for ifindex: %d", ifindex);
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_DEAUTHENTICATE, 512);
|
|
msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &ifindex);
|
|
msg_append_attr(msg, NL80211_ATTR_REASON_CODE, 2, &reason_code);
|
|
msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, aa);
|
|
l_genl_family_send(nl80211, msg, deauthenticate_cb, device, NULL);
|
|
device_enter_state(device, DEVICE_STATE_DISCONNECTING);
|
|
}
|
|
|
|
static void mlme_set_pairwise_key_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct device *device = data;
|
|
|
|
device->pairwise_set_key_cmd_id = 0;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("Set Key for Pairwise Key failed for ifindex: %d",
|
|
device->index);
|
|
setting_keys_failed(device, MPDU_REASON_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static unsigned int mlme_set_pairwise_key(struct device *device)
|
|
{
|
|
uint8_t key_id = 0;
|
|
struct l_genl_msg *msg;
|
|
unsigned int id;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_KEY, 512);
|
|
if (!msg)
|
|
return 0;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DEFAULT, 0, NULL);
|
|
|
|
l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
|
|
l_genl_msg_append_attr(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST, 0, NULL);
|
|
l_genl_msg_leave_nested(msg);
|
|
|
|
id = l_genl_family_send(nl80211, msg, mlme_set_pairwise_key_cb,
|
|
device, NULL);
|
|
if (!id)
|
|
l_genl_msg_unref(msg);
|
|
|
|
return id;
|
|
}
|
|
|
|
static void mlme_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct device *device = data;
|
|
|
|
device->pairwise_new_key_cmd_id = 0;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("New Key for Pairwise Key failed for ifindex: %d",
|
|
device->index);
|
|
setting_keys_failed(device, MPDU_REASON_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
}
|
|
|
|
static unsigned int mlme_new_pairwise_key(struct device *device,
|
|
uint32_t cipher,
|
|
const uint8_t *aa,
|
|
const uint8_t *tk,
|
|
size_t tk_len)
|
|
{
|
|
uint8_t key_id = 0;
|
|
struct l_genl_msg *msg;
|
|
unsigned int id;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
|
|
if (!msg)
|
|
return 0;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DATA, tk_len, tk);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_CIPHER, 4, &cipher);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, aa);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
|
|
id = l_genl_family_send(nl80211, msg, mlme_new_pairwise_key_cb,
|
|
device, NULL);
|
|
if (!id)
|
|
l_genl_msg_unref(msg);
|
|
|
|
return id;
|
|
}
|
|
|
|
static void wiphy_set_tk(uint32_t ifindex, const uint8_t *aa,
|
|
const uint8_t *tk, uint32_t cipher,
|
|
void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
struct network *network = device->connected_network;
|
|
uint8_t tk_buf[32];
|
|
|
|
l_debug("");
|
|
|
|
switch (cipher) {
|
|
case CRYPTO_CIPHER_CCMP:
|
|
memcpy(tk_buf, tk, 16);
|
|
break;
|
|
case CRYPTO_CIPHER_TKIP:
|
|
/*
|
|
* Swap the TX and RX MIC key portions for supplicant.
|
|
* WPA_80211_v3_1_090922 doc's 3.3.4:
|
|
* The MIC key used on the Client for transmit (TX) is in
|
|
* bytes 24-31, and the MIC key used on the Client for
|
|
* receive (RX) is in bytes 16-23 of the PTK. That is,
|
|
* assume that TX MIC and RX MIC referred to in Clause 8.7
|
|
* are referenced to the Authenticator. Similarly, on the AP,
|
|
* the MIC used for TX is in bytes 16-23, and the MIC key
|
|
* used for RX is in bytes 24-31 of the PTK.
|
|
*/
|
|
memcpy(tk_buf, tk, 16);
|
|
memcpy(tk_buf + 16, tk + 24, 8);
|
|
memcpy(tk_buf + 24, tk + 16, 8);
|
|
break;
|
|
default:
|
|
l_error("Unexpected cipher: %x", cipher);
|
|
setting_keys_failed(device,
|
|
MPDU_REASON_CODE_INVALID_PAIRWISE_CIPHER);
|
|
return;
|
|
}
|
|
|
|
/* If we got here, then our PSK works. Save if required */
|
|
network_sync_psk(network);
|
|
|
|
device->pairwise_new_key_cmd_id =
|
|
mlme_new_pairwise_key(device, cipher, aa,
|
|
tk_buf, crypto_cipher_key_len(cipher));
|
|
device->pairwise_set_key_cmd_id = mlme_set_pairwise_key(device);
|
|
}
|
|
|
|
static void operstate_cb(bool result, void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
|
|
if (!result) {
|
|
l_error("Setting LinkMode and OperState failed for ifindex %d",
|
|
device->index);
|
|
setting_keys_failed(device, MPDU_REASON_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
|
|
if (device->connect_pending) {
|
|
struct l_dbus_message *reply;
|
|
|
|
reply = l_dbus_message_new_method_return(
|
|
device->connect_pending);
|
|
l_dbus_message_set_arguments(reply, "");
|
|
dbus_pending_reply(&device->connect_pending, reply);
|
|
}
|
|
|
|
network_connected(device->connected_network);
|
|
device_enter_state(device, DEVICE_STATE_CONNECTED);
|
|
}
|
|
|
|
static void set_station_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("Set Station failed for ifindex %d", device->index);
|
|
setting_keys_failed(device, MPDU_REASON_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
|
|
netdev_set_linkmode_and_operstate(device->index, 1, IF_OPER_UP,
|
|
operstate_cb, device);
|
|
}
|
|
|
|
static int set_station_cmd(struct device *device)
|
|
{
|
|
struct scan_bss *bss = device->connected_bss;
|
|
struct l_genl_msg *msg;
|
|
struct nl80211_sta_flag_update flags;
|
|
|
|
flags.mask = 1 << NL80211_STA_FLAG_AUTHORIZED;
|
|
flags.set = flags.mask;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_SET_STATION, 512);
|
|
msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, bss->addr);
|
|
msg_append_attr(msg, NL80211_ATTR_STA_FLAGS2,
|
|
sizeof(struct nl80211_sta_flag_update), &flags);
|
|
l_genl_family_send(nl80211, msg, set_station_cb, device, NULL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void mlme_new_group_key_cb(struct l_genl_msg *msg, void *data)
|
|
{
|
|
struct device *device = data;
|
|
|
|
device->group_new_key_cmd_id = 0;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0) {
|
|
l_error("New Key for Group Key failed for ifindex: %d",
|
|
device->index);
|
|
setting_keys_failed(device, MPDU_REASON_CODE_UNSPECIFIED);
|
|
return;
|
|
}
|
|
|
|
set_station_cmd(device);
|
|
}
|
|
|
|
static unsigned int mlme_new_group_key(struct device *device,
|
|
uint32_t cipher, uint8_t key_id,
|
|
const uint8_t *gtk, size_t gtk_len,
|
|
const uint8_t *rsc, size_t rsc_len)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
unsigned int id;
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
|
|
if (!msg)
|
|
return 0;
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DATA, gtk_len, gtk);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_CIPHER, 4, &cipher);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_SEQ, rsc_len, rsc);
|
|
|
|
l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
|
|
l_genl_msg_append_attr(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST,
|
|
0, NULL);
|
|
l_genl_msg_leave_nested(msg);
|
|
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
|
|
l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
|
|
id = l_genl_family_send(nl80211, msg, mlme_new_group_key_cb,
|
|
device, NULL);
|
|
if (!id)
|
|
l_genl_msg_unref(msg);
|
|
|
|
return id;
|
|
}
|
|
|
|
static void wiphy_set_gtk(uint32_t ifindex, uint8_t key_index,
|
|
const uint8_t *gtk, uint8_t gtk_len,
|
|
const uint8_t *rsc, uint8_t rsc_len,
|
|
uint32_t cipher, void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
uint8_t gtk_buf[32];
|
|
|
|
l_debug("");
|
|
|
|
switch (cipher) {
|
|
case CRYPTO_CIPHER_CCMP:
|
|
memcpy(gtk_buf, gtk, 16);
|
|
break;
|
|
case CRYPTO_CIPHER_TKIP:
|
|
/*
|
|
* Swap the TX and RX MIC key portions for supplicant.
|
|
* WPA_80211_v3_1_090922 doc's 3.3.4:
|
|
* The MIC key used on the Client for transmit (TX) is in
|
|
* bytes 24-31, and the MIC key used on the Client for
|
|
* receive (RX) is in bytes 16-23 of the PTK. That is,
|
|
* assume that TX MIC and RX MIC referred to in Clause 8.7
|
|
* are referenced to the Authenticator. Similarly, on the AP,
|
|
* the MIC used for TX is in bytes 16-23, and the MIC key
|
|
* used for RX is in bytes 24-31 of the PTK.
|
|
*
|
|
* Here apply this to the GTK instead of the PTK.
|
|
*/
|
|
memcpy(gtk_buf, gtk, 16);
|
|
memcpy(gtk_buf + 16, gtk + 24, 8);
|
|
memcpy(gtk_buf + 24, gtk + 16, 8);
|
|
break;
|
|
default:
|
|
l_error("Unexpected cipher: %x", cipher);
|
|
setting_keys_failed(device,
|
|
MPDU_REASON_CODE_INVALID_GROUP_CIPHER);
|
|
return;
|
|
}
|
|
|
|
if (crypto_cipher_key_len(cipher) != gtk_len) {
|
|
l_error("Unexpected key length: %d", gtk_len);
|
|
setting_keys_failed(device,
|
|
MPDU_REASON_CODE_INVALID_GROUP_CIPHER);
|
|
return;
|
|
}
|
|
|
|
device->group_new_key_cmd_id =
|
|
mlme_new_group_key(device, cipher, key_index,
|
|
gtk_buf, gtk_len, rsc, rsc_len);
|
|
}
|
|
|
|
static void mlme_associate_event(struct l_genl_msg *msg, struct device *device)
|
|
{
|
|
int err;
|
|
|
|
l_debug("");
|
|
|
|
err = l_genl_msg_get_error(msg);
|
|
if (err < 0) {
|
|
l_error("association failed %s (%d)", strerror(-err), err);
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_failed(device->connect_pending));
|
|
device_disassociated(device);
|
|
return;
|
|
}
|
|
|
|
l_info("Association completed");
|
|
|
|
if (network_get_security(device->connected_network) == SECURITY_NONE)
|
|
netdev_set_linkmode_and_operstate(device->index, 1, IF_OPER_UP,
|
|
operstate_cb, device);
|
|
}
|
|
|
|
static void genl_associate_cb(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct device *device = user_data;
|
|
|
|
if (l_genl_msg_get_error(msg) < 0 && device->connect_pending)
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_failed(device->connect_pending));
|
|
}
|
|
|
|
static void mlme_associate_cmd(struct device *device)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
struct scan_bss *bss = device->connected_bss;
|
|
struct network *network = device->connected_network;
|
|
struct wiphy *wiphy = device->wiphy;
|
|
const char *ssid = network_get_ssid(network);
|
|
enum security security = network_get_security(network);
|
|
|
|
l_debug("");
|
|
|
|
msg = l_genl_msg_new_sized(NL80211_CMD_ASSOCIATE, 512);
|
|
msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &device->index);
|
|
msg_append_attr(msg, NL80211_ATTR_WIPHY_FREQ, 4, &bss->frequency);
|
|
msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, bss->addr);
|
|
msg_append_attr(msg, NL80211_ATTR_SSID, strlen(ssid), ssid);
|
|
|
|
if (security == SECURITY_PSK || security == SECURITY_8021X) {
|
|
uint16_t pairwise_ciphers, group_ciphers;
|
|
uint32_t pairwise_cipher_attr;
|
|
uint32_t group_cipher_attr;
|
|
uint8_t rsne_buf[256];
|
|
struct ie_rsn_info info;
|
|
struct eapol_sm *sm = eapol_sm_new();
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
|
|
if (security == SECURITY_PSK)
|
|
info.akm_suites =
|
|
bss->sha256 ? IE_RSN_AKM_SUITE_PSK_SHA256 :
|
|
IE_RSN_AKM_SUITE_PSK;
|
|
else
|
|
info.akm_suites =
|
|
bss->sha256 ? IE_RSN_AKM_SUITE_8021X_SHA256 :
|
|
IE_RSN_AKM_SUITE_8021X;
|
|
|
|
bss_get_supported_ciphers(bss, &pairwise_ciphers,
|
|
&group_ciphers);
|
|
|
|
info.pairwise_ciphers = wiphy_select_cipher(wiphy,
|
|
pairwise_ciphers);
|
|
if (info.pairwise_ciphers == IE_RSN_CIPHER_SUITE_CCMP)
|
|
pairwise_cipher_attr = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
pairwise_cipher_attr = CRYPTO_CIPHER_TKIP;
|
|
|
|
info.group_cipher = wiphy_select_cipher(wiphy, group_ciphers);
|
|
if (info.group_cipher == IE_RSN_CIPHER_SUITE_CCMP)
|
|
group_cipher_attr = CRYPTO_CIPHER_CCMP;
|
|
else
|
|
group_cipher_attr = CRYPTO_CIPHER_TKIP;
|
|
|
|
/* RSN takes priority */
|
|
if (bss->rsne) {
|
|
ie_build_rsne(&info, rsne_buf);
|
|
eapol_sm_set_ap_rsn(sm, bss->rsne, bss->rsne[1] + 2);
|
|
eapol_sm_set_own_rsn(sm, rsne_buf, rsne_buf[1] + 2);
|
|
} else {
|
|
ie_build_wpa(&info, rsne_buf);
|
|
eapol_sm_set_ap_wpa(sm, bss->wpa, bss->wpa[1] + 2);
|
|
eapol_sm_set_own_wpa(sm, rsne_buf, rsne_buf[1] + 2);
|
|
}
|
|
|
|
if (security == SECURITY_PSK)
|
|
eapol_sm_set_pmk(sm, network_get_psk(network));
|
|
else
|
|
eapol_sm_set_8021x_config(sm,
|
|
network_get_settings(network));
|
|
|
|
eapol_sm_set_authenticator_address(sm, bss->addr);
|
|
eapol_sm_set_supplicant_address(sm, device->addr);
|
|
eapol_sm_set_user_data(sm, device);
|
|
eapol_sm_set_tx_user_data(sm,
|
|
L_INT_TO_PTR(l_io_get_fd(device->eapol_io)));
|
|
eapol_start(device->index, sm);
|
|
|
|
msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE,
|
|
4, &pairwise_cipher_attr);
|
|
msg_append_attr(msg, NL80211_ATTR_CIPHER_SUITE_GROUP,
|
|
4, &group_cipher_attr);
|
|
|
|
msg_append_attr(msg, NL80211_ATTR_CONTROL_PORT, 0, NULL);
|
|
msg_append_attr(msg, NL80211_ATTR_IE,
|
|
rsne_buf[1] + 2, rsne_buf);
|
|
}
|
|
|
|
l_genl_family_send(nl80211, msg, genl_associate_cb, device, NULL);
|
|
}
|
|
|
|
static void mlme_authenticate_event(struct l_genl_msg *msg,
|
|
struct device *device)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
int err;
|
|
|
|
l_debug("");
|
|
|
|
err = l_genl_msg_get_error(msg);
|
|
if (err < 0) {
|
|
l_error("authentication failed %s (%d)", strerror(-err), err);
|
|
goto error;
|
|
}
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_debug("attr init failed");
|
|
goto error;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_TIMED_OUT:
|
|
l_warn("authentication timed out");
|
|
goto error;
|
|
}
|
|
}
|
|
|
|
l_info("Authentication completed");
|
|
mlme_associate_cmd(device);
|
|
return;
|
|
|
|
error:
|
|
if (device->connect_pending)
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_failed(device->connect_pending));
|
|
|
|
device_disassociated(device);
|
|
}
|
|
|
|
static void mlme_deauthenticate_event(struct l_genl_msg *msg,
|
|
struct device *device)
|
|
{
|
|
l_debug("");
|
|
}
|
|
|
|
static void mlme_disconnect_event(struct l_genl_msg *msg,
|
|
struct device *device)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint16_t reason_code = 0;
|
|
bool disconnect_by_ap = false;
|
|
|
|
l_debug("");
|
|
|
|
if (!l_genl_attr_init(&attr, msg)) {
|
|
l_error("attr init failed");
|
|
return;
|
|
}
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_REASON_CODE:
|
|
if (len != sizeof(uint16_t))
|
|
l_warn("Invalid reason code attribute");
|
|
else
|
|
reason_code = *((uint16_t *) data);
|
|
|
|
break;
|
|
|
|
case NL80211_ATTR_DISCONNECTED_BY_AP:
|
|
disconnect_by_ap = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
l_info("Received Deauthentication event, reason: %hu, from_ap: %s",
|
|
reason_code, disconnect_by_ap ? "true" : "false");
|
|
|
|
if (!disconnect_by_ap)
|
|
return;
|
|
|
|
if (device->connect_pending) {
|
|
struct network *network = device->connected_network;
|
|
|
|
dbus_pending_reply(&device->connect_pending,
|
|
dbus_error_failed(device->connect_pending));
|
|
|
|
network_connect_failed(network);
|
|
}
|
|
|
|
device_disassociated(device);
|
|
}
|
|
|
|
static void mlme_cqm_event(struct l_genl_msg *msg, struct device *device)
|
|
{
|
|
struct l_genl_attr attr;
|
|
struct l_genl_attr nested;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
|
|
l_debug("");
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_CQM:
|
|
if (!l_genl_attr_recurse(&attr, &nested))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&nested, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_CQM_BEACON_LOSS_EVENT:
|
|
device_lost_beacon(device);
|
|
break;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void network_reset_bss_list(const void *key, void *value,
|
|
void *user_data)
|
|
{
|
|
struct network *network = value;
|
|
|
|
network_bss_list_clear(network);
|
|
}
|
|
|
|
static bool network_remove_if_lost(const void *key, void *data, void *user_data)
|
|
{
|
|
struct network *network = data;
|
|
|
|
if (!network_bss_list_isempty(network))
|
|
return false;
|
|
|
|
l_debug("No remaining BSSs for SSID: %s -- Removing network",
|
|
network_get_ssid(network));
|
|
network_remove(network);
|
|
|
|
return true;
|
|
}
|
|
|
|
static int autoconnect_rank_compare(const void *a, const void *b, void *user)
|
|
{
|
|
const struct autoconnect_entry *new_ae = a;
|
|
const struct autoconnect_entry *ae = b;
|
|
|
|
return ae->rank - new_ae->rank;
|
|
}
|
|
|
|
static void process_bss(struct device *device, struct scan_bss *bss)
|
|
{
|
|
struct network *network;
|
|
enum security security;
|
|
const char *path;
|
|
double rankmod;
|
|
struct autoconnect_entry *entry;
|
|
|
|
l_debug("Found BSS '%s' with SSID: %s, freq: %u, rank: %u, "
|
|
"strength: %i",
|
|
scan_bss_address_to_string(bss),
|
|
util_ssid_to_utf8(bss->ssid_len, bss->ssid),
|
|
bss->frequency, bss->rank, bss->signal_strength);
|
|
|
|
if (!util_ssid_is_utf8(bss->ssid_len, bss->ssid)) {
|
|
l_warn("Ignoring BSS with non-UTF8 SSID");
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If both an RSN and a WPA elements are present currently
|
|
* RSN takes priority and the WPA IE is ignored.
|
|
*/
|
|
if (bss->rsne) {
|
|
struct ie_rsn_info rsne;
|
|
int res = ie_parse_rsne_from_data(bss->rsne, bss->rsne[1] + 2,
|
|
&rsne);
|
|
if (res < 0) {
|
|
l_debug("Cannot parse RSN field (%d, %s)",
|
|
res, strerror(-res));
|
|
return;
|
|
}
|
|
|
|
security = scan_get_security(bss->capability, &rsne);
|
|
|
|
if (security == SECURITY_PSK)
|
|
bss->sha256 =
|
|
rsne.akm_suites & IE_RSN_AKM_SUITE_PSK_SHA256;
|
|
else if (security == SECURITY_8021X)
|
|
bss->sha256 =
|
|
rsne.akm_suites & IE_RSN_AKM_SUITE_8021X_SHA256;
|
|
} else if (bss->wpa) {
|
|
struct ie_rsn_info wpa;
|
|
int res = ie_parse_wpa_from_data(bss->wpa, bss->wpa[1] + 2,
|
|
&wpa);
|
|
if (res < 0) {
|
|
l_debug("Cannot parse WPA IE (%d, %s)",
|
|
res, strerror(-res));
|
|
return;
|
|
}
|
|
|
|
security = scan_get_security(bss->capability, &wpa);
|
|
} else
|
|
security = scan_get_security(bss->capability, NULL);
|
|
|
|
path = iwd_network_get_path(device, bss->ssid, bss->ssid_len,
|
|
security);
|
|
|
|
network = l_hashmap_lookup(device->networks, path);
|
|
if (!network) {
|
|
network = network_create(device, bss->ssid, bss->ssid_len,
|
|
security);
|
|
|
|
if (!network_register(network, path)) {
|
|
network_remove(network);
|
|
return;
|
|
}
|
|
|
|
l_hashmap_insert(device->networks,
|
|
network_get_path(network), network);
|
|
l_debug("Added new Network \"%s\" security %s",
|
|
network_get_ssid(network), security_to_str(security));
|
|
|
|
network_seen(network);
|
|
}
|
|
|
|
network_bss_add(network, bss);
|
|
|
|
rankmod = network_rankmod(security, network_get_ssid(network));
|
|
if (rankmod == 0.0)
|
|
return;
|
|
|
|
entry = l_new(struct autoconnect_entry, 1);
|
|
entry->network = network;
|
|
entry->bss = bss;
|
|
entry->rank = bss->rank * rankmod;
|
|
l_queue_insert(device->autoconnect_list, entry,
|
|
autoconnect_rank_compare, NULL);
|
|
}
|
|
|
|
static bool new_scan_results(uint32_t wiphy_id, uint32_t ifindex,
|
|
struct l_queue *bss_list, void *userdata)
|
|
{
|
|
struct device *device = userdata;
|
|
const struct l_queue_entry *bss_entry;
|
|
|
|
device->old_bss_list = device->bss_list;
|
|
device->bss_list = bss_list;
|
|
l_hashmap_foreach(device->networks, network_reset_bss_list, NULL);
|
|
|
|
l_queue_destroy(device->autoconnect_list, l_free);
|
|
device->autoconnect_list = l_queue_new();
|
|
|
|
for (bss_entry = l_queue_get_entries(bss_list); bss_entry;
|
|
bss_entry = bss_entry->next) {
|
|
struct scan_bss *bss = bss_entry->data;
|
|
|
|
process_bss(device, bss);
|
|
}
|
|
|
|
if (device->connected_bss) {
|
|
struct scan_bss *bss;
|
|
|
|
bss = l_queue_find(device->bss_list, bss_match,
|
|
device->connected_bss);
|
|
|
|
if (!bss) {
|
|
l_warn("Connected BSS not in scan results!");
|
|
l_queue_push_tail(device->bss_list,
|
|
device->connected_bss);
|
|
network_bss_add(device->connected_network,
|
|
device->connected_bss);
|
|
l_queue_remove(device->old_bss_list,
|
|
device->connected_bss);
|
|
} else
|
|
device->connected_bss = bss;
|
|
}
|
|
|
|
l_hashmap_foreach_remove(device->networks,
|
|
network_remove_if_lost, NULL);
|
|
|
|
l_queue_destroy(device->old_bss_list, bss_free);
|
|
device->old_bss_list = NULL;
|
|
|
|
if (device->state == DEVICE_STATE_AUTOCONNECT)
|
|
device_autoconnect_next(device);
|
|
|
|
return true;
|
|
}
|
|
|
|
static void interface_dump_callback(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct wiphy *wiphy = NULL;
|
|
struct device *device;
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
char ifname[IFNAMSIZ];
|
|
uint8_t ifaddr[ETH_ALEN];
|
|
uint32_t ifindex, iftype;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
memset(ifname, 0, sizeof(ifname));
|
|
memset(ifaddr, 0, sizeof(ifaddr));
|
|
iftype = NL80211_IFTYPE_UNSPECIFIED;
|
|
ifindex = 0;
|
|
|
|
/*
|
|
* The interface index and interface name attributes are normally
|
|
* listed before the wiphy attribute. This handling assumes that
|
|
* all attributes are included in the same message.
|
|
*
|
|
* If any required attribute is missing, the whole message will
|
|
* be ignored.
|
|
*/
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_IFINDEX:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface index attribute");
|
|
return;
|
|
}
|
|
|
|
ifindex = *((uint32_t *) data);
|
|
break;
|
|
|
|
case NL80211_ATTR_IFNAME:
|
|
if (len > sizeof(ifname)) {
|
|
l_warn("Invalid interface name attribute");
|
|
return;
|
|
}
|
|
|
|
memcpy(ifname, data, len);
|
|
break;
|
|
|
|
case NL80211_ATTR_WIPHY:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
wiphy = l_queue_find(wiphy_list, wiphy_match,
|
|
L_UINT_TO_PTR(*((uint32_t *) data)));
|
|
break;
|
|
|
|
case NL80211_ATTR_IFTYPE:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface type attribute");
|
|
return;
|
|
}
|
|
|
|
iftype = *((uint32_t *) data);
|
|
break;
|
|
|
|
case NL80211_ATTR_MAC:
|
|
if (len != sizeof(ifaddr)) {
|
|
l_warn("Invalid interface address attribute");
|
|
return;
|
|
}
|
|
|
|
memcpy(ifaddr, data, len);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!wiphy) {
|
|
l_warn("Missing wiphy attribute or wiphy not found");
|
|
return;
|
|
}
|
|
|
|
if (!ifindex) {
|
|
l_warn("Missing interface index attribute");
|
|
return;
|
|
}
|
|
|
|
device = l_queue_find(wiphy->netdev_list, device_match,
|
|
L_UINT_TO_PTR(ifindex));
|
|
if (!device) {
|
|
struct l_dbus *dbus = dbus_get_bus();
|
|
|
|
device = l_new(struct device, 1);
|
|
device->bss_list = l_queue_new();
|
|
device->networks = l_hashmap_new();
|
|
l_hashmap_set_hash_function(device->networks, l_str_hash);
|
|
l_hashmap_set_compare_function(device->networks,
|
|
(l_hashmap_compare_func_t) strcmp);
|
|
memcpy(device->name, ifname, sizeof(device->name));
|
|
memcpy(device->addr, ifaddr, sizeof(device->addr));
|
|
device->index = ifindex;
|
|
device->type = iftype;
|
|
device->wiphy = wiphy;
|
|
|
|
l_queue_push_head(wiphy->netdev_list, device);
|
|
|
|
if (!l_dbus_object_add_interface(dbus,
|
|
device_get_path(device),
|
|
IWD_DEVICE_INTERFACE, device))
|
|
l_info("Unable to register %s interface",
|
|
IWD_DEVICE_INTERFACE);
|
|
|
|
__device_watch_call_added(device);
|
|
|
|
netdev_set_linkmode_and_operstate(device->index, 1,
|
|
IF_OPER_DORMANT, NULL, NULL);
|
|
|
|
scan_ifindex_add(device->index);
|
|
device_enter_state(device, DEVICE_STATE_AUTOCONNECT);
|
|
}
|
|
|
|
l_debug("Found interface %s", device->name);
|
|
|
|
device->eapol_io = eapol_open_pae(device->index);
|
|
if (!device->eapol_io) {
|
|
l_error("Failed to open PAE socket");
|
|
return;
|
|
}
|
|
|
|
l_io_set_read_handler(device->eapol_io, eapol_read, device, NULL);
|
|
}
|
|
|
|
static void parse_supported_commands(struct wiphy *wiphy,
|
|
struct l_genl_attr *attr)
|
|
{
|
|
uint16_t type, len;
|
|
const void *data;
|
|
|
|
while (l_genl_attr_next(attr, &type, &len, &data)) {
|
|
uint32_t cmd = *(uint32_t *)data;
|
|
|
|
switch (cmd) {
|
|
case NL80211_CMD_START_SCHED_SCAN:
|
|
wiphy->support_scheduled_scan = true;
|
|
break;
|
|
case NL80211_CMD_SET_REKEY_OFFLOAD:
|
|
wiphy->support_rekey_offload = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void parse_supported_ciphers(struct wiphy *wiphy, const void *data,
|
|
uint16_t len)
|
|
{
|
|
bool s;
|
|
|
|
while (len >= 4) {
|
|
uint32_t cipher = *(uint32_t *)data;
|
|
|
|
switch (cipher) {
|
|
case CRYPTO_CIPHER_CCMP:
|
|
wiphy->pairwise_ciphers |= IE_RSN_CIPHER_SUITE_CCMP;
|
|
break;
|
|
case CRYPTO_CIPHER_TKIP:
|
|
wiphy->pairwise_ciphers |= IE_RSN_CIPHER_SUITE_TKIP;
|
|
break;
|
|
case CRYPTO_CIPHER_WEP40:
|
|
wiphy->pairwise_ciphers |= IE_RSN_CIPHER_SUITE_WEP40;
|
|
break;
|
|
case CRYPTO_CIPHER_WEP104:
|
|
wiphy->pairwise_ciphers |= IE_RSN_CIPHER_SUITE_WEP104;
|
|
break;
|
|
case CRYPTO_CIPHER_BIP:
|
|
wiphy->pairwise_ciphers |= IE_RSN_CIPHER_SUITE_BIP;
|
|
break;
|
|
default: /* TODO: Support other ciphers */
|
|
break;
|
|
}
|
|
|
|
len -= 4;
|
|
data += 4;
|
|
}
|
|
|
|
s = wiphy->pairwise_ciphers & IE_RSN_CIPHER_SUITE_CCMP;
|
|
l_info("Wiphy supports CCMP: %s", s ? "true" : "false");
|
|
|
|
s = wiphy->pairwise_ciphers & IE_RSN_CIPHER_SUITE_TKIP;
|
|
l_info("Wiphy supports TKIP: %s", s ? "true" : "false");
|
|
}
|
|
|
|
static void parse_supported_frequencies(struct wiphy *wiphy,
|
|
struct l_genl_attr *freqs)
|
|
{
|
|
uint16_t type, len;
|
|
const void *data;
|
|
struct l_genl_attr attr;
|
|
|
|
l_debug("");
|
|
|
|
while (l_genl_attr_next(freqs, NULL, NULL, NULL)) {
|
|
if (!l_genl_attr_recurse(freqs, &attr))
|
|
continue;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
uint32_t u32;
|
|
|
|
switch (type) {
|
|
case NL80211_FREQUENCY_ATTR_FREQ:
|
|
u32 = *((uint32_t *) data);
|
|
scan_freq_set_add(wiphy->supported_freqs, u32);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void parse_supported_bands(struct wiphy *wiphy,
|
|
struct l_genl_attr *bands)
|
|
{
|
|
uint16_t type, len;
|
|
const void *data;
|
|
struct l_genl_attr attr;
|
|
|
|
l_debug("");
|
|
|
|
while (l_genl_attr_next(bands, NULL, NULL, NULL)) {
|
|
if (!l_genl_attr_recurse(bands, &attr))
|
|
continue;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
struct l_genl_attr freqs;
|
|
|
|
switch (type) {
|
|
case NL80211_BAND_ATTR_FREQS:
|
|
if (!l_genl_attr_recurse(&attr, &freqs))
|
|
continue;
|
|
|
|
parse_supported_frequencies(wiphy, &freqs);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#define FAIL_NO_WIPHY() \
|
|
if (!wiphy) { \
|
|
l_warn("No wiphy structure found"); \
|
|
return; \
|
|
} \
|
|
|
|
static void wiphy_dump_callback(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct wiphy *wiphy = NULL;
|
|
struct l_genl_attr attr, nested;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint32_t id;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
/*
|
|
* The wiphy attribute is always the first attribute in the
|
|
* list. If not then error out with a warning and ignore the
|
|
* whole message.
|
|
*
|
|
* In most cases multiple of these message will be send
|
|
* since the information included can not fit into a single
|
|
* message.
|
|
*/
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_WIPHY:
|
|
if (wiphy) {
|
|
l_warn("Duplicate wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
id = *((uint32_t *) data);
|
|
|
|
wiphy = l_queue_find(wiphy_list, wiphy_match,
|
|
L_UINT_TO_PTR(id));
|
|
if (!wiphy) {
|
|
wiphy = l_new(struct wiphy, 1);
|
|
wiphy->id = id;
|
|
wiphy->netdev_list = l_queue_new();
|
|
wiphy->supported_freqs = scan_freq_set_new();
|
|
l_queue_push_head(wiphy_list, wiphy);
|
|
}
|
|
break;
|
|
|
|
case NL80211_ATTR_WIPHY_NAME:
|
|
FAIL_NO_WIPHY();
|
|
|
|
if (len > sizeof(wiphy->name)) {
|
|
l_warn("Invalid wiphy name attribute");
|
|
return;
|
|
}
|
|
|
|
memcpy(wiphy->name, data, len);
|
|
break;
|
|
|
|
case NL80211_ATTR_FEATURE_FLAGS:
|
|
FAIL_NO_WIPHY();
|
|
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid feature flags attribute");
|
|
return;
|
|
}
|
|
|
|
wiphy->feature_flags = *((uint32_t *) data);
|
|
break;
|
|
case NL80211_ATTR_SUPPORTED_COMMANDS:
|
|
FAIL_NO_WIPHY();
|
|
|
|
if (!l_genl_attr_recurse(&attr, &nested))
|
|
return;
|
|
|
|
parse_supported_commands(wiphy, &nested);
|
|
break;
|
|
case NL80211_ATTR_CIPHER_SUITES:
|
|
FAIL_NO_WIPHY();
|
|
|
|
parse_supported_ciphers(wiphy, data, len);
|
|
break;
|
|
case NL80211_ATTR_WIPHY_BANDS:
|
|
FAIL_NO_WIPHY();
|
|
|
|
if (!l_genl_attr_recurse(&attr, &nested))
|
|
return;
|
|
|
|
parse_supported_bands(wiphy, &nested);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void wiphy_dump_done(void *user)
|
|
{
|
|
const struct l_queue_entry *wiphy_entry;
|
|
|
|
for (wiphy_entry = l_queue_get_entries(wiphy_list); wiphy_entry;
|
|
wiphy_entry = wiphy_entry->next) {
|
|
struct wiphy *wiphy = wiphy_entry->data;
|
|
uint32_t bands;
|
|
|
|
l_info("Wiphy: %d, Name: %s", wiphy->id, wiphy->name);
|
|
l_info("Bands:");
|
|
|
|
bands = scan_freq_set_get_bands(wiphy->supported_freqs);
|
|
|
|
if (bands & SCAN_BAND_2_4_GHZ)
|
|
l_info("\t2.4 Ghz");
|
|
|
|
if (bands & SCAN_BAND_5_GHZ)
|
|
l_info("\t5.0 Ghz");
|
|
}
|
|
}
|
|
|
|
static void wiphy_config_notify(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint8_t cmd;
|
|
|
|
cmd = l_genl_msg_get_command(msg);
|
|
|
|
l_debug("Notification of command %u", cmd);
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
switch (cmd) {
|
|
case NL80211_CMD_NEW_WIPHY:
|
|
case NL80211_CMD_DEL_WIPHY:
|
|
{
|
|
const uint32_t *wiphy_id = NULL;
|
|
const char *wiphy_name = NULL;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_WIPHY:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
wiphy_id = data;
|
|
break;
|
|
|
|
case NL80211_ATTR_WIPHY_NAME:
|
|
wiphy_name = data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!wiphy_id)
|
|
return;
|
|
|
|
if (cmd == NL80211_CMD_NEW_WIPHY)
|
|
l_info("New Wiphy %s[%d] added", wiphy_name, *wiphy_id);
|
|
else
|
|
l_info("Wiphy %s[%d] removed", wiphy_name, *wiphy_id);
|
|
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void wiphy_mlme_notify(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct wiphy *wiphy = NULL;
|
|
struct device *device = NULL;
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint8_t cmd;
|
|
|
|
cmd = l_genl_msg_get_command(msg);
|
|
|
|
l_debug("MLME notification %u", cmd);
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_WIPHY:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
wiphy = l_queue_find(wiphy_list, wiphy_match,
|
|
L_UINT_TO_PTR(*((uint32_t *) data)));
|
|
if (!wiphy) {
|
|
l_warn("No wiphy structure found");
|
|
return;
|
|
}
|
|
break;
|
|
|
|
case NL80211_ATTR_IFINDEX:
|
|
if (!wiphy) {
|
|
l_warn("No wiphy structure found");
|
|
return;
|
|
}
|
|
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid interface index attribute");
|
|
return;
|
|
}
|
|
|
|
device = l_queue_find(wiphy->netdev_list, device_match,
|
|
L_UINT_TO_PTR(*((uint32_t *) data)));
|
|
if (!device) {
|
|
l_warn("No interface structure found");
|
|
return;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!wiphy) {
|
|
l_warn("MLME notification is missing wiphy attribute");
|
|
return;
|
|
}
|
|
|
|
if (!device) {
|
|
l_warn("MLME notification is missing interface attribute");
|
|
return;
|
|
}
|
|
|
|
|
|
switch (cmd) {
|
|
case NL80211_CMD_AUTHENTICATE:
|
|
mlme_authenticate_event(msg, device);
|
|
break;
|
|
case NL80211_CMD_ASSOCIATE:
|
|
mlme_associate_event(msg, device);
|
|
break;
|
|
case NL80211_CMD_DEAUTHENTICATE:
|
|
mlme_deauthenticate_event(msg, device);
|
|
break;
|
|
case NL80211_CMD_DISCONNECT:
|
|
mlme_disconnect_event(msg, device);
|
|
break;
|
|
case NL80211_CMD_NOTIFY_CQM:
|
|
mlme_cqm_event(msg, device);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void wiphy_regulatory_notify(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint8_t cmd;
|
|
|
|
cmd = l_genl_msg_get_command(msg);
|
|
|
|
l_debug("Regulatory notification %u", cmd);
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
}
|
|
}
|
|
|
|
static void regulatory_info_callback(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_REG_ALPHA2:
|
|
if (len != 3) {
|
|
l_warn("Invalid regulatory alpha2 attribute");
|
|
return;
|
|
}
|
|
|
|
l_debug("Regulatory alpha2 is %s", (char *) data);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void protocol_features_callback(struct l_genl_msg *msg, void *user_data)
|
|
{
|
|
struct l_genl_attr attr;
|
|
uint16_t type, len;
|
|
const void *data;
|
|
uint32_t features = 0;
|
|
|
|
if (!l_genl_attr_init(&attr, msg))
|
|
return;
|
|
|
|
while (l_genl_attr_next(&attr, &type, &len, &data)) {
|
|
switch (type) {
|
|
case NL80211_ATTR_PROTOCOL_FEATURES:
|
|
if (len != sizeof(uint32_t)) {
|
|
l_warn("Invalid protocol features attribute");
|
|
return;
|
|
}
|
|
|
|
features = *((uint32_t *) data);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (features & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)
|
|
l_debug("Found split wiphy dump support");
|
|
}
|
|
|
|
bool wiphy_init(struct l_genl_family *in)
|
|
{
|
|
struct l_genl_msg *msg;
|
|
|
|
/*
|
|
* This is an extra sanity check so that no memory is leaked
|
|
* in case the generic netlink handling gets confused.
|
|
*/
|
|
if (wiphy_list) {
|
|
l_warn("Destroying existing list of wiphy devices");
|
|
l_queue_destroy(wiphy_list, NULL);
|
|
}
|
|
|
|
if (!l_dbus_register_interface(dbus_get_bus(),
|
|
IWD_DEVICE_INTERFACE,
|
|
setup_device_interface,
|
|
NULL, true))
|
|
return false;
|
|
|
|
nl80211 = in;
|
|
|
|
if (!l_genl_family_register(nl80211, "config", wiphy_config_notify,
|
|
NULL, NULL))
|
|
l_error("Registering for config notification failed");
|
|
|
|
if (!l_genl_family_register(nl80211, "mlme", wiphy_mlme_notify,
|
|
NULL, NULL))
|
|
l_error("Registering for MLME notification failed");
|
|
|
|
if (!l_genl_family_register(nl80211, "regulatory",
|
|
wiphy_regulatory_notify, NULL, NULL))
|
|
l_error("Registering for regulatory notification failed");
|
|
|
|
__eapol_set_install_tk_func(wiphy_set_tk);
|
|
__eapol_set_install_gtk_func(wiphy_set_gtk);
|
|
__eapol_set_deauthenticate_func(handshake_failed);
|
|
|
|
wiphy_list = l_queue_new();
|
|
|
|
msg = l_genl_msg_new(NL80211_CMD_GET_PROTOCOL_FEATURES);
|
|
if (!l_genl_family_send(nl80211, msg, protocol_features_callback,
|
|
NULL, NULL))
|
|
l_error("Getting protocol features failed");
|
|
|
|
msg = l_genl_msg_new(NL80211_CMD_GET_REG);
|
|
if (!l_genl_family_send(nl80211, msg, regulatory_info_callback,
|
|
NULL, NULL))
|
|
l_error("Getting regulatory info failed");
|
|
|
|
msg = l_genl_msg_new(NL80211_CMD_GET_WIPHY);
|
|
if (!l_genl_family_dump(nl80211, msg, wiphy_dump_callback,
|
|
NULL, wiphy_dump_done))
|
|
l_error("Getting all wiphy devices failed");
|
|
|
|
msg = l_genl_msg_new(NL80211_CMD_GET_INTERFACE);
|
|
if (!l_genl_family_dump(nl80211, msg, interface_dump_callback,
|
|
NULL, NULL))
|
|
l_error("Getting all interface information failed");
|
|
|
|
return true;
|
|
}
|
|
|
|
bool wiphy_exit(void)
|
|
{
|
|
l_queue_destroy(wiphy_list, wiphy_free);
|
|
wiphy_list = NULL;
|
|
|
|
nl80211 = NULL;
|
|
|
|
l_dbus_unregister_interface(dbus_get_bus(), IWD_DEVICE_INTERFACE);
|
|
|
|
return true;
|
|
}
|