jenna
/
kernel_samsung_sm7125
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Bluetooth: Replace RFCOMM link mode with security level

Browse Source 
Change the RFCOMM internals to use the new security levels and remove
the link mode details.

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
tirimbino
Marcel Holtmann 16 years ago
parent 2af6b9d518
commit 9f2c8a03fb
3 changed files with 79 additions and 31 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 7
      include/net/bluetooth/rfcomm.h
  2. 28
      net/bluetooth/rfcomm/core.c
  3. 75
      net/bluetooth/rfcomm/sock.c

7
include/net/bluetooth/rfcomm.h
Unescape View File

@ -183,8 +183,8 @@ struct rfcomm_dlc {
u8 remote_v24_sig;
u8 mscex;
u8 out;
u32 link_mode;
u8 sec_level;
u8 role_switch;
u32 defer_setup;
uint mtu;
@ -307,7 +307,8 @@ struct rfcomm_pinfo {
struct bt_sock bt;
struct rfcomm_dlc *dlc;
u8 channel;
u32 link_mode;
u8 sec_level;
u8 role_switch;
};
int rfcomm_init_sockets(void);

28
net/bluetooth/rfcomm/core.c
Unescape View File

@ -223,21 +223,11 @@ static int rfcomm_l2sock_create(struct socket **sock)
return err;
}
static inline int rfcomm_check_link_mode(struct rfcomm_dlc *d)
static inline int rfcomm_check_security(struct rfcomm_dlc *d)
{
struct sock *sk = d->session->sock->sk;
struct l2cap_conn *conn = l2cap_pi(sk)->conn;
if (d->link_mode & RFCOMM_LM_SECURE)
return hci_conn_security(conn->hcon, BT_SECURITY_HIGH);
if (d->link_mode & RFCOMM_LM_ENCRYPT)
return hci_conn_security(conn->hcon, BT_SECURITY_MEDIUM);
if (d->link_mode & RFCOMM_LM_AUTH)
return hci_conn_security(conn->hcon, BT_SECURITY_LOW);
return 1;
return hci_conn_security(l2cap_pi(sk)->conn->hcon, d->sec_level);
}
/* ---- RFCOMM DLCs ---- */
@ -390,7 +380,7 @@ static int __rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst,
d->cfc = (s->cfc == RFCOMM_CFC_UNKNOWN) ? 0 : s->cfc;
if (s->state == BT_CONNECTED) {
if (rfcomm_check_link_mode(d))
if (rfcomm_check_security(d))
rfcomm_send_pn(s, 1, d);
else
set_bit(RFCOMM_AUTH_PENDING, &d->flags);
@ -1192,7 +1182,7 @@ void rfcomm_dlc_accept(struct rfcomm_dlc *d)
d->state_change(d, 0);
rfcomm_dlc_unlock(d);
if (d->link_mode & RFCOMM_LM_MASTER)
if (d->role_switch)
hci_conn_switch_role(l2cap_pi(sk)->conn->hcon, 0x00);
rfcomm_send_msc(d->session, 1, d->dlci, d->v24_sig);
@ -1200,7 +1190,7 @@ void rfcomm_dlc_accept(struct rfcomm_dlc *d)
static void rfcomm_check_accept(struct rfcomm_dlc *d)
{
if (rfcomm_check_link_mode(d)) {
if (rfcomm_check_security(d)) {
if (d->defer_setup) {
set_bit(RFCOMM_DEFER_SETUP, &d->flags);
rfcomm_dlc_set_timer(d, RFCOMM_AUTH_TIMEOUT);
@ -1660,7 +1650,7 @@ static void rfcomm_process_connect(struct rfcomm_session *s)
d = list_entry(p, struct rfcomm_dlc, list);
if (d->state == BT_CONFIG) {
d->mtu = s->mtu;
if (rfcomm_check_link_mode(d)) {
if (rfcomm_check_security(d)) {
rfcomm_send_pn(s, 1, d);
} else {
set_bit(RFCOMM_AUTH_PENDING, &d->flags);
@ -1748,10 +1738,6 @@ static inline void rfcomm_process_dlcs(struct rfcomm_session *s)
} else
rfcomm_dlc_accept(d);
}
if (d->link_mode & RFCOMM_LM_SECURE) {
struct sock *sk = s->sock->sk;
hci_conn_change_link_key(l2cap_pi(sk)->conn->hcon);
}
continue;
} else if (test_and_clear_bit(RFCOMM_AUTH_REJECT, &d->flags)) {
rfcomm_dlc_clear_timer(d);
@ -1994,7 +1980,7 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
d = list_entry(p, struct rfcomm_dlc, list);
if (!status && encrypt == 0x00 &&
(d->link_mode & RFCOMM_LM_ENCRYPT) &&
d->sec_level == BT_SECURITY_HIGH &&
(d->state == BT_CONNECTED ||
d->state == BT_CONFIG)) {
__rfcomm_dlc_close(d, ECONNREFUSED);

75
net/bluetooth/rfcomm/sock.c
Unescape View File

@ -261,14 +261,19 @@ static void rfcomm_sock_init(struct sock *sk, struct sock *parent)
if (parent) {
sk->sk_type = parent->sk_type;
pi->link_mode = rfcomm_pi(parent)->link_mode;
pi->dlc->defer_setup = bt_sk(parent)->defer_setup;
pi->sec_level = rfcomm_pi(parent)->sec_level;
pi->role_switch = rfcomm_pi(parent)->role_switch;
} else {
pi->link_mode = 0;
pi->dlc->defer_setup = 0;
pi->sec_level = BT_SECURITY_LOW;
pi->role_switch = 0;
}
pi->dlc->link_mode = pi->link_mode;
pi->dlc->sec_level = pi->sec_level;
pi->dlc->role_switch = pi->role_switch;
}
static struct proto rfcomm_proto = {
@ -408,7 +413,8 @@ static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int a
bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr);
rfcomm_pi(sk)->channel = sa->rc_channel;
d->link_mode = rfcomm_pi(sk)->link_mode;
d->sec_level = rfcomm_pi(sk)->sec_level;
d->role_switch = rfcomm_pi(sk)->role_switch;
err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel);
if (!err)
@ -741,7 +747,14 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u
break;
}
rfcomm_pi(sk)->link_mode = opt;
if (opt & RFCOMM_LM_AUTH)
rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW;
if (opt & RFCOMM_LM_ENCRYPT)
rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM;
if (opt & RFCOMM_LM_SECURE)
rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH;
rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER);
break;
default:
@ -756,7 +769,8 @@ static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __u
static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int optlen)
{
struct sock *sk = sock->sk;
int err = 0;
struct bt_security sec;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
@ -767,6 +781,23 @@ static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, c
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
sec.level = BT_SECURITY_LOW;
len = min_t(unsigned int, sizeof(sec), optlen);
if (copy_from_user((char *) &sec, optval, len)) {
err = -EFAULT;
break;
}
if (sec.level > BT_SECURITY_HIGH) {
err = -EINVAL;
break;
}
rfcomm_pi(sk)->sec_level = sec.level;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;
@ -796,6 +827,7 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u
struct sock *l2cap_sk;
struct rfcomm_conninfo cinfo;
int len, err = 0;
u32 opt;
BT_DBG("sk %p", sk);
@ -806,7 +838,26 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u
switch (optname) {
case RFCOMM_LM:
if (put_user(rfcomm_pi(sk)->link_mode, (u32 __user *) optval))
switch (rfcomm_pi(sk)->sec_level) {
case BT_SECURITY_LOW:
opt = RFCOMM_LM_AUTH;
break;
case BT_SECURITY_MEDIUM:
opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT;
break;
case BT_SECURITY_HIGH:
opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT |
RFCOMM_LM_SECURE;
break;
default:
opt = 0;
break;
}
if (rfcomm_pi(sk)->role_switch)
opt |= RFCOMM_LM_MASTER;
if (put_user(opt, (u32 __user *) optval))
err = -EFAULT;
break;
@ -840,6 +891,7 @@ static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __u
static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen)
{
struct sock *sk = sock->sk;
struct bt_security sec;
int len, err = 0;
BT_DBG("sk %p", sk);
@ -853,6 +905,15 @@ static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, c
lock_sock(sk);
switch (optname) {
case BT_SECURITY:
sec.level = rfcomm_pi(sk)->sec_level;
len = min_t(unsigned int, len, sizeof(sec));
if (copy_to_user(optval, (char *) &sec, len))
err = -EFAULT;
break;
case BT_DEFER_SETUP:
if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) {
err = -EINVAL;

Write Preview
Loading…
Cancel
Save