mirror of
https://git.kernel.org/pub/scm/network/wireless/iwd.git
synced 2024-11-20 04:19:25 +01:00
netdev: Move key setting logic out of wiphy.c
This commit is contained in:
Denis Kenzior
parent
c714b20102
commit
dd4b0dc3d3
@ -239,6 +239,7 @@ static void device_netdev_event(struct netdev *netdev, enum netdev_event event,
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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 network *network = device->connected_network;
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switch (event) {
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case NETDEV_EVENT_AUTHENTICATING:
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@ -252,6 +253,10 @@ static void device_netdev_event(struct netdev *netdev, enum netdev_event event,
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break;
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case NETDEV_EVENT_SETTING_KEYS:
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l_debug("Setting keys");
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/* If we got here, then our PSK works. Save if required */
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network_sync_psk(network);
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break;
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case NETDEV_EVENT_LOST_BEACON:
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device_lost_beacon(device);
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@ -53,10 +53,6 @@ struct device {
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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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struct netdev *netdev;
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};
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318
src/netdev.c
318
src/netdev.c
@ -57,6 +57,10 @@ struct netdev {
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struct l_genl_msg *associate_msg;
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struct eapol_sm *sm;
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uint8_t remote_addr[ETH_ALEN];
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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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};
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static struct l_netlink *rtnl = NULL;
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@ -311,6 +315,318 @@ static void netdev_operstate_cb(bool success, void *user_data)
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netdev->connect_cb(netdev, result, netdev->user_data);
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}
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static void netdev_setting_keys_failed(struct netdev *netdev,
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uint16_t reason_code)
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{
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struct l_genl_msg *msg;
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/*
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* Something went wrong with our new_key, set_key, new_key,
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* set_station
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*
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* Cancel all pending commands, then de-authenticate
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*/
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l_genl_family_cancel(nl80211, netdev->pairwise_new_key_cmd_id);
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netdev->pairwise_new_key_cmd_id = 0;
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l_genl_family_cancel(nl80211, netdev->pairwise_set_key_cmd_id);
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netdev->pairwise_set_key_cmd_id = 0;
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l_genl_family_cancel(nl80211, netdev->group_new_key_cmd_id);
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netdev->group_new_key_cmd_id = 0;
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eapol_cancel(netdev->index);
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msg = netdev_build_cmd_deauthenticate(netdev,
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MPDU_REASON_CODE_UNSPECIFIED);
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l_genl_family_send(nl80211, msg, NULL, NULL, NULL);
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if (netdev->connect_cb)
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netdev->connect_cb(netdev, NETDEV_RESULT_KEY_SETTING_FAILED,
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netdev->user_data);
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}
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static void netdev_set_station_cb(struct l_genl_msg *msg, void *user_data)
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{
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struct netdev *netdev = user_data;
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if (l_genl_msg_get_error(msg) < 0) {
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l_error("Set Station failed for ifindex %d", netdev->index);
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netdev_setting_keys_failed(netdev,
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MPDU_REASON_CODE_UNSPECIFIED);
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return;
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}
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netdev_set_linkmode_and_operstate(netdev->index, 1, IF_OPER_UP,
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netdev_operstate_cb, netdev);
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}
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static struct l_genl_msg *netdev_build_cmd_set_station(struct netdev *netdev)
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{
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struct l_genl_msg *msg;
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struct nl80211_sta_flag_update flags;
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flags.mask = 1 << NL80211_STA_FLAG_AUTHORIZED;
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flags.set = flags.mask;
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msg = l_genl_msg_new_sized(NL80211_CMD_SET_STATION, 512);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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l_genl_msg_append_attr(msg, NL80211_ATTR_MAC,
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ETH_ALEN, netdev->remote_addr);
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l_genl_msg_append_attr(msg, NL80211_ATTR_STA_FLAGS2,
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sizeof(struct nl80211_sta_flag_update), &flags);
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return msg;
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}
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static void netdev_new_group_key_cb(struct l_genl_msg *msg, void *data)
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{
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struct netdev *netdev = data;
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netdev->group_new_key_cmd_id = 0;
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if (l_genl_msg_get_error(msg) < 0) {
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l_error("New Key for Group Key failed for ifindex: %d",
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netdev->index);
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goto error;
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}
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msg = netdev_build_cmd_set_station(netdev);
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if (l_genl_family_send(nl80211, msg, netdev_set_station_cb,
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netdev, NULL) > 0)
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return;
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error:
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netdev_setting_keys_failed(netdev, MPDU_REASON_CODE_UNSPECIFIED);
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}
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static struct l_genl_msg *netdev_build_cmd_new_key_group(struct netdev *netdev,
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uint32_t cipher, uint8_t key_id,
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const uint8_t *gtk, size_t gtk_len,
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const uint8_t *rsc, size_t rsc_len)
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{
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DATA, gtk_len, gtk);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_CIPHER, 4, &cipher);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_SEQ, rsc_len, rsc);
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l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
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l_genl_msg_append_attr(msg, NL80211_KEY_DEFAULT_TYPE_MULTICAST,
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0, NULL);
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l_genl_msg_leave_nested(msg);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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return msg;
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}
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static void netdev_set_gtk(uint32_t ifindex, uint8_t key_index,
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const uint8_t *gtk, uint8_t gtk_len,
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const uint8_t *rsc, uint8_t rsc_len,
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uint32_t cipher, void *user_data)
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{
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uint8_t gtk_buf[32];
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struct netdev *netdev;
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struct l_genl_msg *msg;
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netdev = netdev_find(ifindex);
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l_debug("%d", netdev->index);
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switch (cipher) {
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case CRYPTO_CIPHER_CCMP:
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memcpy(gtk_buf, gtk, 16);
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break;
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case CRYPTO_CIPHER_TKIP:
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/*
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* Swap the TX and RX MIC key portions for supplicant.
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* WPA_80211_v3_1_090922 doc's 3.3.4:
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* The MIC key used on the Client for transmit (TX) is in
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* bytes 24-31, and the MIC key used on the Client for
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* receive (RX) is in bytes 16-23 of the PTK. That is,
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* assume that TX MIC and RX MIC referred to in Clause 8.7
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* are referenced to the Authenticator. Similarly, on the AP,
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* the MIC used for TX is in bytes 16-23, and the MIC key
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* used for RX is in bytes 24-31 of the PTK.
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*
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* Here apply this to the GTK instead of the PTK.
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*/
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memcpy(gtk_buf, gtk, 16);
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memcpy(gtk_buf + 16, gtk + 24, 8);
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memcpy(gtk_buf + 24, gtk + 16, 8);
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break;
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default:
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l_error("Unexpected cipher: %x", cipher);
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netdev_setting_keys_failed(netdev,
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MPDU_REASON_CODE_INVALID_GROUP_CIPHER);
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return;
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}
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if (crypto_cipher_key_len(cipher) != gtk_len) {
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l_error("Unexpected key length: %d", gtk_len);
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netdev_setting_keys_failed(netdev,
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MPDU_REASON_CODE_INVALID_GROUP_CIPHER);
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return;
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}
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msg = netdev_build_cmd_new_key_group(netdev, cipher, key_index,
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gtk_buf, gtk_len,
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rsc, rsc_len);
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netdev->group_new_key_cmd_id =
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l_genl_family_send(nl80211, msg, netdev_new_group_key_cb,
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netdev, NULL);
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if (netdev->group_new_key_cmd_id > 0)
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return;
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l_genl_msg_unref(msg);
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netdev_setting_keys_failed(netdev, MPDU_REASON_CODE_UNSPECIFIED);
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}
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static void netdev_set_pairwise_key_cb(struct l_genl_msg *msg, void *data)
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{
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struct netdev *netdev = data;
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netdev->pairwise_set_key_cmd_id = 0;
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if (l_genl_msg_get_error(msg) >= 0)
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return;
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l_error("Set Key for Pairwise Key failed for ifindex: %d",
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netdev->index);
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netdev_setting_keys_failed(netdev, MPDU_REASON_CODE_UNSPECIFIED);
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}
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static struct l_genl_msg *netdev_build_cmd_set_key_pairwise(
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struct netdev *netdev)
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{
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uint8_t key_id = 0;
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_SET_KEY, 512);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DEFAULT, 0, NULL);
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l_genl_msg_enter_nested(msg, NL80211_ATTR_KEY_DEFAULT_TYPES);
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l_genl_msg_append_attr(msg, NL80211_KEY_DEFAULT_TYPE_UNICAST, 0, NULL);
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l_genl_msg_leave_nested(msg);
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return msg;
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}
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static void netdev_new_pairwise_key_cb(struct l_genl_msg *msg, void *data)
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{
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struct netdev *netdev = data;
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netdev->pairwise_new_key_cmd_id = 0;
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if (l_genl_msg_get_error(msg) >= 0)
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return;
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l_error("New Key for Pairwise Key failed for ifindex: %d",
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netdev->index);
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netdev_setting_keys_failed(netdev, MPDU_REASON_CODE_UNSPECIFIED);
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}
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static struct l_genl_msg *netdev_build_cmd_new_key_pairwise(
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struct netdev *netdev,
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uint32_t cipher,
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const uint8_t *aa,
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const uint8_t *tk,
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size_t tk_len)
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{
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uint8_t key_id = 0;
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struct l_genl_msg *msg;
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msg = l_genl_msg_new_sized(NL80211_CMD_NEW_KEY, 512);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_DATA, tk_len, tk);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_CIPHER, 4, &cipher);
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l_genl_msg_append_attr(msg, NL80211_ATTR_MAC, ETH_ALEN, aa);
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l_genl_msg_append_attr(msg, NL80211_ATTR_KEY_IDX, 1, &key_id);
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l_genl_msg_append_attr(msg, NL80211_ATTR_IFINDEX, 4, &netdev->index);
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return msg;
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}
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static void netdev_set_tk(uint32_t ifindex, const uint8_t *aa,
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const uint8_t *tk, uint32_t cipher,
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void *user_data)
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{
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uint8_t tk_buf[32];
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struct netdev *netdev;
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struct l_genl_msg *msg;
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netdev = netdev_find(ifindex);
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if (!netdev)
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return;
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l_debug("%d", netdev->index);
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if (netdev->event_filter)
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netdev->event_filter(netdev, NETDEV_EVENT_SETTING_KEYS,
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netdev->user_data);
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switch (cipher) {
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case CRYPTO_CIPHER_CCMP:
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memcpy(tk_buf, tk, 16);
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break;
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case CRYPTO_CIPHER_TKIP:
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/*
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* Swap the TX and RX MIC key portions for supplicant.
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* WPA_80211_v3_1_090922 doc's 3.3.4:
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* The MIC key used on the Client for transmit (TX) is in
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* bytes 24-31, and the MIC key used on the Client for
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* receive (RX) is in bytes 16-23 of the PTK. That is,
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* assume that TX MIC and RX MIC referred to in Clause 8.7
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* are referenced to the Authenticator. Similarly, on the AP,
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* the MIC used for TX is in bytes 16-23, and the MIC key
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* used for RX is in bytes 24-31 of the PTK.
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*/
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memcpy(tk_buf, tk, 16);
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memcpy(tk_buf + 16, tk + 24, 8);
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memcpy(tk_buf + 24, tk + 16, 8);
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break;
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default:
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l_error("Unexpected cipher: %x", cipher);
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netdev_setting_keys_failed(netdev,
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MPDU_REASON_CODE_INVALID_PAIRWISE_CIPHER);
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return;
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}
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msg = netdev_build_cmd_new_key_pairwise(netdev, cipher, aa,
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tk_buf,
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crypto_cipher_key_len(cipher));
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netdev->pairwise_new_key_cmd_id =
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l_genl_family_send(nl80211, msg, netdev_new_pairwise_key_cb,
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netdev, NULL);
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if (!netdev->pairwise_new_key_cmd_id) {
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l_genl_msg_unref(msg);
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goto error;
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}
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msg = netdev_build_cmd_set_key_pairwise(netdev);
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netdev->pairwise_set_key_cmd_id =
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l_genl_family_send(nl80211, msg, netdev_set_pairwise_key_cb,
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netdev, NULL);
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if (netdev->pairwise_set_key_cmd_id > 0)
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return;
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l_genl_msg_unref(msg);
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error:
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netdev_setting_keys_failed(netdev, MPDU_REASON_CODE_UNSPECIFIED);
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}
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static void netdev_handshake_failed(uint32_t ifindex,
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const uint8_t *aa, const uint8_t *spa,
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uint16_t reason_code, void *user_data)
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@ -793,6 +1109,8 @@ bool netdev_init(struct l_genl_family *in)
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NULL, NULL))
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l_error("Registering for MLME notification failed");
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__eapol_set_install_tk_func(netdev_set_tk);
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__eapol_set_install_gtk_func(netdev_set_gtk);
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__eapol_set_deauthenticate_func(netdev_handshake_failed);
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return true;
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331
src/wiphy.c
331
src/wiphy.c
@ -452,334 +452,6 @@ static bool wiphy_match(const void *a, const void *b)
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return (wiphy->id == id);
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}
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static void deauthenticate_cb(struct l_genl_msg *msg,
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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 we were inside a .Connect(), it has failed */
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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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static void setting_keys_failed(struct device *device, uint16_t reason_code)
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{
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struct l_genl_msg *msg;
|
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|
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/*
|
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* Something went wrong with our new_key, set_key, new_key,
|
||||
* set_station, set_oper_state transaction
|
||||
*
|
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* Cancel all pending commands, then de-authenticate
|
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*/
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l_genl_family_cancel(nl80211, device->pairwise_new_key_cmd_id);
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device->pairwise_new_key_cmd_id = 0;
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l_genl_family_cancel(nl80211, device->pairwise_set_key_cmd_id);
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device->pairwise_set_key_cmd_id = 0;
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l_genl_family_cancel(nl80211, device->group_new_key_cmd_id);
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device->group_new_key_cmd_id = 0;
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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, deauthenticate_cb, device, NULL);
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device_enter_state(device, DEVICE_STATE_DISCONNECTING);
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}
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static void mlme_set_pairwise_key_cb(struct l_genl_msg *msg, void *data)
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{
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struct device *device = data;
|
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device->pairwise_set_key_cmd_id = 0;
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|
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if (l_genl_msg_get_error(msg) < 0) {
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l_error("Set Key for Pairwise Key failed for ifindex: %d",
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device->index);
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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 bool process_network(const void *key, void *data, void *user_data)
|
||||
{
|
||||
struct network *network = data;
|
||||
@ -1426,9 +1098,6 @@ bool wiphy_init(struct l_genl_family *in)
|
||||
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);
|
||||
|
||||
wiphy_list = l_queue_new();
|
||||
device_list = l_queue_new();
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user