diff options
Diffstat (limited to 'net/bluetooth/mgmt.c')
| -rw-r--r-- | net/bluetooth/mgmt.c | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index acb7c6d5643f..339c762eb6fd 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -106,6 +106,7 @@ static const u16 mgmt_commands[] = { MGMT_OP_START_LIMITED_DISCOVERY, MGMT_OP_READ_EXT_INFO, MGMT_OP_SET_APPEARANCE, + MGMT_OP_SET_BLOCKED_KEYS, }; static const u16 mgmt_events[] = { @@ -2341,6 +2342,14 @@ static int load_link_keys(struct sock *sk, struct hci_dev *hdev, void *data, for (i = 0; i < key_count; i++) { struct mgmt_link_key_info *key = &cp->keys[i]; + if (hci_is_blocked_key(hdev, + HCI_BLOCKED_KEY_TYPE_LINKKEY, + key->val)) { + bt_dev_warn(hdev, "Skipping blocked link key for %pMR", + &key->addr.bdaddr); + continue; + } + /* Always ignore debug keys and require a new pairing if * the user wants to use them. */ @@ -3531,6 +3540,55 @@ unlock: return err; } +static int set_blocked_keys(struct sock *sk, struct hci_dev *hdev, void *data, + u16 len) +{ + int err = MGMT_STATUS_SUCCESS; + struct mgmt_cp_set_blocked_keys *keys = data; + const u16 max_key_count = ((U16_MAX - sizeof(*keys)) / + sizeof(struct mgmt_blocked_key_info)); + u16 key_count, expected_len; + int i; + + BT_DBG("request for %s", hdev->name); + + key_count = __le16_to_cpu(keys->key_count); + if (key_count > max_key_count) { + bt_dev_err(hdev, "too big key_count value %u", key_count); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BLOCKED_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + expected_len = struct_size(keys, keys, key_count); + if (expected_len != len) { + bt_dev_err(hdev, "expected %u bytes, got %u bytes", + expected_len, len); + return mgmt_cmd_status(sk, hdev->id, MGMT_OP_SET_BLOCKED_KEYS, + MGMT_STATUS_INVALID_PARAMS); + } + + hci_dev_lock(hdev); + + hci_blocked_keys_clear(hdev); + + for (i = 0; i < keys->key_count; ++i) { + struct blocked_key *b = kzalloc(sizeof(*b), GFP_KERNEL); + + if (!b) { + err = MGMT_STATUS_NO_RESOURCES; + break; + } + + b->type = keys->keys[i].type; + memcpy(b->val, keys->keys[i].val, sizeof(b->val)); + list_add_rcu(&b->list, &hdev->blocked_keys); + } + hci_dev_unlock(hdev); + + return mgmt_cmd_complete(sk, hdev->id, MGMT_OP_SET_BLOCKED_KEYS, + err, NULL, 0); +} + static void read_local_oob_data_complete(struct hci_dev *hdev, u8 status, u16 opcode, struct sk_buff *skb) { @@ -5051,6 +5109,14 @@ static int load_irks(struct sock *sk, struct hci_dev *hdev, void *cp_data, for (i = 0; i < irk_count; i++) { struct mgmt_irk_info *irk = &cp->irks[i]; + if (hci_is_blocked_key(hdev, + HCI_BLOCKED_KEY_TYPE_IRK, + irk->val)) { + bt_dev_warn(hdev, "Skipping blocked IRK for %pMR", + &irk->addr.bdaddr); + continue; + } + hci_add_irk(hdev, &irk->addr.bdaddr, le_addr_type(irk->addr.type), irk->val, BDADDR_ANY); @@ -5134,6 +5200,14 @@ static int load_long_term_keys(struct sock *sk, struct hci_dev *hdev, struct mgmt_ltk_info *key = &cp->keys[i]; u8 type, authenticated; + if (hci_is_blocked_key(hdev, + HCI_BLOCKED_KEY_TYPE_LTK, + key->val)) { + bt_dev_warn(hdev, "Skipping blocked LTK for %pMR", + &key->addr.bdaddr); + continue; + } + switch (key->type) { case MGMT_LTK_UNAUTHENTICATED: authenticated = 0x00; @@ -6914,6 +6988,8 @@ static const struct hci_mgmt_handler mgmt_handlers[] = { { set_appearance, MGMT_SET_APPEARANCE_SIZE }, { get_phy_configuration, MGMT_GET_PHY_CONFIGURATION_SIZE }, { set_phy_configuration, MGMT_SET_PHY_CONFIGURATION_SIZE }, + { set_blocked_keys, MGMT_OP_SET_BLOCKED_KEYS_SIZE, + HCI_MGMT_VAR_LEN }, }; void mgmt_index_added(struct hci_dev *hdev) |