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Bluetooth: Set SMP OOB flag if OOB data is available 

If we have OOB data available for the remote device in question we
should set the OOB flag appropriately in the SMP pairing request or
response.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-10-26 21:19:10 +01:00 committed by Marcel Holtmann
parent 86df9200c7
commit 02b05bd8b0
1 changed files with 25 additions and 6 deletions
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31
net/bluetooth/smp.c
View File

@ -57,6 +57,7 @@ enum {
SMP_FLAG_DEBUG_KEY,
SMP_FLAG_WAIT_USER,
SMP_FLAG_DHKEY_PENDING,
SMP_FLAG_OOB,
};
struct smp_chan {
@ -562,7 +563,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
struct smp_chan *smp = chan->data;
struct hci_conn *hcon = conn->hcon;
struct hci_dev *hdev = hcon->hdev;
u8 local_dist = 0, remote_dist = 0;
u8 local_dist = 0, remote_dist = 0, oob_flag = SMP_OOB_NOT_PRESENT;
if (test_bit(HCI_BONDABLE, &conn->hcon->hdev->dev_flags)) {
local_dist = SMP_DIST_ENC_KEY | SMP_DIST_SIGN;
@ -578,19 +579,37 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
if (test_bit(HCI_PRIVACY, &hdev->dev_flags))
local_dist |= SMP_DIST_ID_KEY;
if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags)) {
if ((authreq & SMP_AUTH_SC) &&
test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
if (test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
(authreq & SMP_AUTH_SC)) {
struct oob_data *oob_data;
u8 bdaddr_type;
if (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags)) {
local_dist |= SMP_DIST_LINK_KEY;
remote_dist |= SMP_DIST_LINK_KEY;
}
if (hcon->dst_type == ADDR_LE_DEV_PUBLIC)
bdaddr_type = BDADDR_LE_PUBLIC;
else
bdaddr_type = BDADDR_LE_RANDOM;
oob_data = hci_find_remote_oob_data(hdev, &hcon->dst,
bdaddr_type);
if (oob_data) {
set_bit(SMP_FLAG_OOB, &smp->flags);
oob_flag = SMP_OOB_PRESENT;
memcpy(smp->rrnd, oob_data->rand256, 16);
memcpy(smp->pcnf, oob_data->hash256, 16);
}
} else {
authreq &= ~SMP_AUTH_SC;
}
if (rsp == NULL) {
req->io_capability = conn->hcon->io_capability;
req->oob_flag = SMP_OOB_NOT_PRESENT;
req->oob_flag = oob_flag;
req->max_key_size = SMP_MAX_ENC_KEY_SIZE;
req->init_key_dist = local_dist;
req->resp_key_dist = remote_dist;
@ -601,7 +620,7 @@ static void build_pairing_cmd(struct l2cap_conn *conn,
}
rsp->io_capability = conn->hcon->io_capability;
rsp->oob_flag = SMP_OOB_NOT_PRESENT;
rsp->oob_flag = oob_flag;
rsp->max_key_size = SMP_MAX_ENC_KEY_SIZE;
rsp->init_key_dist = req->init_key_dist & remote_dist;
rsp->resp_key_dist = req->resp_key_dist & local_dist;