[PATCH] Bluetooth: Fix auth_complete_evt for legacy units
From: Waldemar Rymarkiewicz <hidden>
Date: 2011-05-25 13:49:53
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
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 <redacted> --- include/net/bluetooth/hci_core.h | 1 + net/bluetooth/hci_conn.c | 2 ++ net/bluetooth/hci_event.c | 12 ++++++++++-- 3 files changed, 13 insertions(+), 2 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..8b31754 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c@@ -1462,13 +1462,21 @@ static inline void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *s conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); if (conn) { if (!ev->status) { - conn->link_mode |= HCI_LM_AUTH; - conn->sec_level = conn->pending_sec_level; + if (!(conn->ssp_mode > 0 && hdev->ssp_mode > 0) && + test_bit(HCI_CONN_REAUTH_PEND, + &conn->pend)) { + BT_INFO("Re-authentication 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); } 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 &&
--
1.7.1