Bluetooth: Add confirm_hint parameter to user confirmation requests

When accepting a pairing request which fulfills the SSP auto-accept
criteria we need to push the request all the way to the user for
confirmation. This patch adds a new hint to the user_confirm_request
management event so user space can know when to show a numeric
comparison dialog and when to show a simple yes/no confirmation dialog.

Signed-off-by: Johan Hedberg <johan.hedberg@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 09b9dd6..135dfac 100644 (file)
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -783,7 +783,8 @@ int mgmt_connect_failed(u16 index, bdaddr_t *bdaddr, u8 status);
 int mgmt_pin_code_request(u16 index, bdaddr_t *bdaddr, u8 secure);
 int mgmt_pin_code_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
 int mgmt_pin_code_neg_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
-int mgmt_user_confirm_request(u16 index, bdaddr_t *bdaddr, __le32 value);
+int mgmt_user_confirm_request(u16 index, bdaddr_t *bdaddr, __le32 value,
+                                                       u8 confirm_hint);
 int mgmt_user_confirm_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status);
 int mgmt_user_confirm_neg_reply_complete(u16 index, bdaddr_t *bdaddr,
                                                                u8 status);

diff --git a/include/net/bluetooth/mgmt.h b/include/net/bluetooth/mgmt.h
index 0e7de63..c444a2b 100644 (file)
--- a/include/net/bluetooth/mgmt.h
+++ b/include/net/bluetooth/mgmt.h
@@ -259,6 +259,7 @@ struct mgmt_ev_pin_code_request {
 #define MGMT_EV_USER_CONFIRM_REQUEST   0x000F
 struct mgmt_ev_user_confirm_request {
        bdaddr_t bdaddr;
+       __u8 confirm_hint;
        __le32 value;
 } __packed;
 

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index ce8e099..29310c7 100644 (file)
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -2497,7 +2497,7 @@ static inline void hci_user_confirm_request_evt(struct hci_dev *hdev,
                                                        struct sk_buff *skb)
 {
        struct hci_ev_user_confirm_req *ev = (void *) skb->data;
-       int loc_mitm, rem_mitm;
+       int loc_mitm, rem_mitm, confirm_hint = 0;
        struct hci_conn *conn;
 
        BT_DBG("%s", hdev->name);
@@ -2529,6 +2529,16 @@ static inline void hci_user_confirm_request_evt(struct hci_dev *hdev,
        /* If no side requires MITM protection; auto-accept */
        if ((!loc_mitm || conn->remote_cap == 0x03) &&
                                (!rem_mitm || conn->io_capability == 0x03)) {
+
+               /* If we're not the initiators request authorization to
+                * proceed from user space (mgmt_user_confirm with
+                * confirm_hint set to 1). */
+               if (!test_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
+                       BT_DBG("Confirming auto-accept as acceptor");
+                       confirm_hint = 1;
+                       goto confirm;
+               }
+
                BT_DBG("Auto-accept of user confirmation with %ums delay",
                                                hdev->auto_accept_delay);
 
@@ -2543,7 +2553,9 @@ static inline void hci_user_confirm_request_evt(struct hci_dev *hdev,
                goto unlock;
        }
 
-       mgmt_user_confirm_request(hdev->id, &ev->bdaddr, ev->passkey);
+confirm:
+       mgmt_user_confirm_request(hdev->id, &ev->bdaddr, ev->passkey,
+                                                               confirm_hint);
 
 unlock:
        hci_dev_unlock(hdev);

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index a7b4937..a1b0ec4 100644 (file)
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1995,13 +1995,15 @@ int mgmt_pin_code_neg_reply_complete(u16 index, bdaddr_t *bdaddr, u8 status)
        return err;
 }
 
-int mgmt_user_confirm_request(u16 index, bdaddr_t *bdaddr, __le32 value)
+int mgmt_user_confirm_request(u16 index, bdaddr_t *bdaddr, __le32 value,
+                                                       u8 confirm_hint)
 {
        struct mgmt_ev_user_confirm_request ev;
 
        BT_DBG("hci%u", index);
 
        bacpy(&ev.bdaddr, bdaddr);
+       ev.confirm_hint = confirm_hint;
        put_unaligned_le32(value, &ev.value);
 
        return mgmt_event(MGMT_EV_USER_CONFIRM_REQUEST, index, &ev, sizeof(ev),