Now that we have methods to finding keys by its parameters we can
reject an encryption request if the key isn't found.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@xxxxxxxxxxxxx>
---
net/bluetooth/hci_event.c | 18 ++++++++++++++++--
1 files changed, 16 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ac2c5e8..9c7c370 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2793,21 +2793,35 @@ static inline void hci_le_ltk_request_evt(struct hci_dev *hdev,
{
struct hci_ev_le_ltk_req *ev = (void *) skb->data;
struct hci_cp_le_ltk_reply cp;
+ struct hci_cp_le_ltk_neg_reply neg;
struct hci_conn *conn;
+ struct link_key *ltk;
BT_DBG("%s handle %d", hdev->name, cpu_to_le16(ev->handle));
hci_dev_lock(hdev);
conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle));
+ if (conn == NULL)
+ goto not_found;
+
+ ltk = hci_find_ltk(hdev, ev->ediv, ev->random);
+ if (ltk == NULL)
+ goto not_found;
- memset(&cp, 0, sizeof(cp));
+ memcpy(cp.ltk, ltk->val, sizeof(ltk->val));
cp.handle = cpu_to_le16(conn->handle);
- memcpy(cp.ltk, conn->ltk, sizeof(conn->ltk));
hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp);
hci_dev_unlock(hdev);
+
+ return;
+
+not_found:
+ neg.handle = ev->handle;
+ hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg);
+ hci_dev_unlock(hdev);
}
static inline void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb)
--
1.7.6
--
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