Some MITM scenarios require handling of the User Passkey Request event,
by querying the user, and passing the response back.
Signed-off-by: Brian Gix <bgix@xxxxxxxxxxxxxx>
---
include/net/bluetooth/hci_core.h | 5 +++
net/bluetooth/hci_event.c | 58 ++++++++++++++++++++++++++++++++++++++
2 files changed, 63 insertions(+), 0 deletions(-)
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index a67ff88..47e5934 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -933,6 +933,11 @@ int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
u8 status);
int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
bdaddr_t *bdaddr, u8 status);
+int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
+int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
+ u8 status);
+int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
+ bdaddr_t *bdaddr, u8 status);
int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 0d55d00..ac22947 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -927,6 +927,37 @@ static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev,
hci_dev_unlock(hdev);
}
+static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb)
+{
+ struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
+
+ BT_DBG("%s status 0x%x", hdev->name, rp->status);
+
+ hci_dev_lock(hdev);
+
+ if (test_bit(HCI_MGMT, &hdev->flags))
+ mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr,
+ rp->status);
+
+ hci_dev_unlock(hdev);
+}
+
+static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_rp_user_confirm_reply *rp = (void *) skb->data;
+
+ BT_DBG("%s status 0x%x", hdev->name, rp->status);
+
+ hci_dev_lock(hdev);
+
+ if (test_bit(HCI_MGMT, &hdev->flags))
+ mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr,
+ rp->status);
+
+ hci_dev_unlock(hdev);
+}
+
static void hci_cc_read_local_oob_data_reply(struct hci_dev *hdev,
struct sk_buff *skb)
{
@@ -2011,6 +2042,14 @@ static inline void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *sk
hci_cc_user_confirm_neg_reply(hdev, skb);
break;
+ case HCI_OP_USER_PASSKEY_REPLY:
+ hci_cc_user_passkey_reply(hdev, skb);
+ break;
+
+ case HCI_OP_USER_PASSKEY_NEG_REPLY:
+ hci_cc_user_passkey_neg_reply(hdev, skb);
+ break;
+
case HCI_OP_LE_SET_SCAN_ENABLE:
hci_cc_le_set_scan_enable(hdev, skb);
break;
@@ -2770,6 +2809,21 @@ unlock:
hci_dev_unlock(hdev);
}
+static inline void hci_user_passkey_request_evt(struct hci_dev *hdev,
+ struct sk_buff *skb)
+{
+ struct hci_ev_user_passkey_req *ev = (void *) skb->data;
+
+ BT_DBG("%s", hdev->name);
+
+ hci_dev_lock(hdev);
+
+ if (test_bit(HCI_MGMT, &hdev->flags))
+ mgmt_user_passkey_request(hdev, &ev->bdaddr);
+
+ hci_dev_unlock(hdev);
+}
+
static inline void hci_simple_pair_complete_evt(struct hci_dev *hdev, struct sk_buff *skb)
{
struct hci_ev_simple_pair_complete *ev = (void *) skb->data;
@@ -3109,6 +3163,10 @@ void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb)
hci_user_confirm_request_evt(hdev, skb);
break;
+ case HCI_EV_USER_PASSKEY_REQUEST:
+ hci_user_passkey_request_evt(hdev, skb);
+ break;
+
case HCI_EV_SIMPLE_PAIR_COMPLETE:
hci_simple_pair_complete_evt(hdev, skb);
break;
--
1.7.7.2
--
Brian Gix
bgix@xxxxxxxxxxxxxx
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum
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