diff options
| -rw-r--r-- | net/bluetooth/hci_event.c | 47 |
1 files changed, 40 insertions, 7 deletions
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index 844f7d1..54680fd 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -3191,6 +3191,38 @@ unlock: hci_dev_unlock(hdev); } +static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) +{ + if (key_type == HCI_LK_CHANGED_COMBINATION) + return; + + conn->pin_length = pin_len; + conn->key_type = key_type; + + switch (key_type) { + case HCI_LK_LOCAL_UNIT: + case HCI_LK_REMOTE_UNIT: + case HCI_LK_DEBUG_COMBINATION: + return; + case HCI_LK_COMBINATION: + if (pin_len == 16) + conn->pending_sec_level = BT_SECURITY_HIGH; + else + conn->pending_sec_level = BT_SECURITY_MEDIUM; + break; + case HCI_LK_UNAUTH_COMBINATION_P192: + case HCI_LK_UNAUTH_COMBINATION_P256: + conn->pending_sec_level = BT_SECURITY_MEDIUM; + break; + case HCI_LK_AUTH_COMBINATION_P192: + conn->pending_sec_level = BT_SECURITY_HIGH; + break; + case HCI_LK_AUTH_COMBINATION_P256: + conn->pending_sec_level = BT_SECURITY_FIPS; + break; + } +} + static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) { struct hci_ev_link_key_req *ev = (void *) skb->data; @@ -3232,8 +3264,7 @@ static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) goto not_found; } - conn->key_type = key->type; - conn->pin_length = key->pin_len; + conn_set_key(conn, key->type, key->pin_len); } bacpy(&cp.bdaddr, &ev->bdaddr); @@ -3266,12 +3297,8 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) if (conn) { hci_conn_hold(conn); conn->disc_timeout = HCI_DISCONN_TIMEOUT; - pin_len = conn->pin_length; - - if (ev->key_type != HCI_LK_CHANGED_COMBINATION) - conn->key_type = ev->key_type; - hci_conn_drop(conn); + conn_set_key(conn, ev->key_type, conn->pin_length); } if (!test_bit(HCI_MGMT, &hdev->dev_flags)) @@ -3282,6 +3309,12 @@ static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) if (!key) goto unlock; + /* Update connection information since adding the key will have + * fixed up the type in the case of changed combination keys. + */ + if (ev->key_type == HCI_LK_CHANGED_COMBINATION) + conn_set_key(conn, key->type, key->pin_len); + mgmt_new_link_key(hdev, key, persistent); /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag |
