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authorMarcel Holtmann <marcel@holtmann.org>2015-01-31 08:37:02 (GMT)
committerMarcel Holtmann <marcel@holtmann.org>2015-01-31 20:26:14 (GMT)
commit41bcfd50d52c83d43fe75fba7938a592dcb6589b (patch)
tree199360b3cdfe33f1d17770dba545f6c60d44b41c /net/bluetooth
parent4775a4ea14d3e15645336e4b0f1355e526c57956 (diff)
downloadlinux-41bcfd50d52c83d43fe75fba7938a592dcb6589b.tar.xz
Bluetooth: Allow remote OOB data to only provide P-192 or P-256 values
In case the remote only provided P-192 or P-256 data for OOB pairing, then make sure that the data value pointers are correctly set. That way the core can provide correct information when remote OOB data present information have to be communicated. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/mgmt.c29
1 files changed, 25 insertions, 4 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 78939e0..ba3b4a5 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -3672,7 +3672,7 @@ static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
status, &cp->addr, sizeof(cp->addr));
} else if (len == MGMT_ADD_REMOTE_OOB_EXT_DATA_SIZE) {
struct mgmt_cp_add_remote_oob_ext_data *cp = data;
- u8 *rand192, *hash192;
+ u8 *rand192, *hash192, *rand256, *hash256;
u8 status;
if (bdaddr_type_is_le(cp->addr.type)) {
@@ -3691,13 +3691,34 @@ static int add_remote_oob_data(struct sock *sk, struct hci_dev *hdev,
rand192 = NULL;
hash192 = NULL;
} else {
- rand192 = cp->rand192;
- hash192 = cp->hash192;
+ /* In case one of the P-192 values is set to zero,
+ * then just disable OOB data for P-192.
+ */
+ if (!memcmp(cp->rand192, ZERO_KEY, 16) ||
+ !memcmp(cp->hash192, ZERO_KEY, 16)) {
+ rand192 = NULL;
+ hash192 = NULL;
+ } else {
+ rand192 = cp->rand192;
+ hash192 = cp->hash192;
+ }
+ }
+
+ /* In case one of the P-256 values is set to zero, then just
+ * disable OOB data for P-256.
+ */
+ if (!memcmp(cp->rand256, ZERO_KEY, 16) ||
+ !memcmp(cp->hash256, ZERO_KEY, 16)) {
+ rand256 = NULL;
+ hash256 = NULL;
+ } else {
+ rand256 = cp->rand256;
+ hash256 = cp->hash256;
}
err = hci_add_remote_oob_data(hdev, &cp->addr.bdaddr,
cp->addr.type, hash192, rand192,
- cp->hash256, cp->rand256);
+ hash256, rand256);
if (err < 0)
status = MGMT_STATUS_FAILED;
else