Return-Path: From: Waldemar Rymarkiewicz To: CC: Johan Hedberg , , , Waldemar Rymarkiewicz Subject: [PATCH v2] Bluetooth: Fix auth_complete_evt for legacy units Date: Thu, 26 May 2011 10:46:48 +0200 Message-ID: <1306399608-10595-1-git-send-email-waldemar.rymarkiewicz@tieto.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Legacy devices don't re-authenticate the link properly if a link key already exists. Thus, don't update sec_level for this case even if hci_auth_complete_evt indicates success. Otherwise the sec_level will not reflect a real security on the link. Signed-off-by: Waldemar Rymarkiewicz --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_conn.c | 2 + net/bluetooth/hci_event.c | 73 +++++++++++++++++++++----------------- 3 files changed, 43 insertions(+), 33 deletions(-) diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h index 6c994c0..1af6754 100644 --- a/include/net/bluetooth/hci_core.h +++ b/include/net/bluetooth/hci_core.h @@ -313,6 +313,7 @@ void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data); /* ----- HCI Connections ----- */ enum { HCI_CONN_AUTH_PEND, + HCI_CONN_REAUTH_PEND, HCI_CONN_ENCRYPT_PEND, HCI_CONN_RSWITCH_PEND, HCI_CONN_MODE_CHANGE_PEND, diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c index 3163330..e675402 100644 --- a/net/bluetooth/hci_conn.c +++ b/net/bluetooth/hci_conn.c @@ -548,6 +548,8 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type) cp.handle = cpu_to_le16(conn->handle); hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); + if (conn->key_type != 0xff) + set_bit(HCI_CONN_REAUTH_PEND, &conn->pend); } return 0; diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c index f13ddbf..4b289a4 100644 --- a/net/bluetooth/hci_event.c +++ b/net/bluetooth/hci_event.c @@ -1460,51 +1460,58 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s hci_dev_lock(hdev); conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); - if (conn) { - if (!ev->status) { + if (!conn) + goto unlock; + + if (!ev->status) { + if (!(conn->ssp_mode > 0 && hdev->ssp_mode > 0) && + test_bit(HCI_CONN_REAUTH_PEND, &conn->pend)) { + BT_INFO("re-auth of legacy device is not possible."); + } else { conn->link_mode |= HCI_LM_AUTH; conn->sec_level = conn->pending_sec_level; - } else { - mgmt_auth_failed(hdev->id, &conn->dst, ev->status); } + } else { + mgmt_auth_failed(hdev->id, &conn->dst, ev->status); + } - clear_bit(HCI_CONN_AUTH_PEND, &conn->pend); + clear_bit(HCI_CONN_AUTH_PEND, &conn->pend); + clear_bit(HCI_CONN_REAUTH_PEND, &conn->pend); - if (conn->state == BT_CONFIG) { - if (!ev->status && hdev->ssp_mode > 0 && - conn->ssp_mode > 0) { - struct hci_cp_set_conn_encrypt cp; - cp.handle = ev->handle; - cp.encrypt = 0x01; - hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, - sizeof(cp), &cp); - } else { - conn->state = BT_CONNECTED; - hci_proto_connect_cfm(conn, ev->status); - hci_conn_put(conn); - } + if (conn->state == BT_CONFIG) { + if (!ev->status && hdev->ssp_mode > 0 && conn->ssp_mode > 0) { + struct hci_cp_set_conn_encrypt cp; + cp.handle = ev->handle; + cp.encrypt = 0x01; + hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), + &cp); } else { - hci_auth_cfm(conn, ev->status); - - hci_conn_hold(conn); - conn->disc_timeout = HCI_DISCONN_TIMEOUT; + conn->state = BT_CONNECTED; + hci_proto_connect_cfm(conn, ev->status); hci_conn_put(conn); } + } else { + hci_auth_cfm(conn, ev->status); - if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) { - if (!ev->status) { - struct hci_cp_set_conn_encrypt cp; - cp.handle = ev->handle; - cp.encrypt = 0x01; - hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, - sizeof(cp), &cp); - } else { - clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); - hci_encrypt_cfm(conn, ev->status, 0x00); - } + hci_conn_hold(conn); + conn->disc_timeout = HCI_DISCONN_TIMEOUT; + hci_conn_put(conn); + } + + if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend)) { + if (!ev->status) { + struct hci_cp_set_conn_encrypt cp; + cp.handle = ev->handle; + cp.encrypt = 0x01; + hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), + &cp); + } else { + clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend); + hci_encrypt_cfm(conn, ev->status, 0x00); } } +unlock: hci_dev_unlock(hdev); } -- 1.7.1