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Bluetooth: Use general bonding whenever possible

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When receiving incoming connection to specific services, always use
general bonding. This ensures that the link key gets stored and can be
used for further authentications.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Marcel Holtmann 2009-02-09 02:48:38 +01:00
parent efc7688b55
commit 0684e5f9fb
4 changed files with 40 additions and 17 deletions
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2
include/net/bluetooth/hci_core.h
View File

@ -328,7 +328,7 @@ void hci_conn_check_pending(struct hci_dev *hdev);
struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
int hci_conn_check_link_mode(struct hci_conn *conn);
int hci_conn_security(struct hci_conn *conn, __u8 sec_level);
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
int hci_conn_change_link_key(struct hci_conn *conn);
int hci_conn_switch_role(struct hci_conn *conn, __u8 role);

23
net/bluetooth/hci_conn.c
View File

@ -391,19 +391,14 @@ int hci_conn_check_link_mode(struct hci_conn *conn)
EXPORT_SYMBOL(hci_conn_check_link_mode);
/* Authenticate remote device */
static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level)
static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
{
BT_DBG("conn %p", conn);
if (sec_level > conn->sec_level)
conn->link_mode &= ~HCI_LM_AUTH;
conn->sec_level = sec_level;
if (sec_level == BT_SECURITY_HIGH)
conn->auth_type |= 0x01;
if (conn->link_mode & HCI_LM_AUTH)
if (sec_level > conn->sec_level) {
conn->sec_level = sec_level;
conn->auth_type = auth_type;
} else if (conn->link_mode & HCI_LM_AUTH)
return 1;
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
@ -417,7 +412,7 @@ static int hci_conn_auth(struct hci_conn *conn, __u8 sec_level)
}
/* Enable security */
int hci_conn_security(struct hci_conn *conn, __u8 sec_level)
int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type)
{
BT_DBG("conn %p", conn);
@ -426,18 +421,18 @@ int hci_conn_security(struct hci_conn *conn, __u8 sec_level)
if (sec_level == BT_SECURITY_LOW) {
if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0)
return hci_conn_auth(conn, sec_level);
return hci_conn_auth(conn, sec_level, auth_type);
else
return 1;
}
if (conn->link_mode & HCI_LM_ENCRYPT)
return hci_conn_auth(conn, sec_level);
return hci_conn_auth(conn, sec_level, auth_type);
if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
return 0;
if (hci_conn_auth(conn, sec_level)) {
if (hci_conn_auth(conn, sec_level, auth_type)) {
struct hci_cp_set_conn_encrypt cp;
cp.handle = cpu_to_le16(conn->handle);
cp.encrypt = 1;

16
net/bluetooth/l2cap.c
View File

@ -263,8 +263,22 @@ static void l2cap_chan_del(struct sock *sk, int err)
static inline int l2cap_check_security(struct sock *sk)
{
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
__u8 auth_type;
return hci_conn_security(conn->hcon, l2cap_pi(sk)->sec_level);
switch (l2cap_pi(sk)->sec_level) {
case BT_SECURITY_HIGH:
auth_type = HCI_AT_GENERAL_BONDING_MITM;
break;
case BT_SECURITY_MEDIUM:
auth_type = HCI_AT_GENERAL_BONDING;
break;
default:
auth_type = HCI_AT_NO_BONDING;
break;
}
return hci_conn_security(conn->hcon, l2cap_pi(sk)->sec_level,
auth_type);
}
static inline u8 l2cap_get_ident(struct l2cap_conn *conn)

16
net/bluetooth/rfcomm/core.c
View File

@ -226,8 +226,22 @@ static int rfcomm_l2sock_create(struct socket **sock)
static inline int rfcomm_check_security(struct rfcomm_dlc *d)
{
struct sock *sk = d->session->sock->sk;
__u8 auth_type;
return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level);
switch (d->sec_level) {
case BT_SECURITY_HIGH:
auth_type = HCI_AT_GENERAL_BONDING_MITM;
break;
case BT_SECURITY_MEDIUM:
auth_type = HCI_AT_GENERAL_BONDING;
break;
default:
auth_type = HCI_AT_NO_BONDING;
break;
}
return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level,
auth_type);
}
/* ---- RFCOMM DLCs ---- */