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Bluetooth: Set SMP OOB flag if OOB data is available

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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;