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authorMarcel Holtmann <marcel@holtmann.org>2008-07-14 20:13:50 +0200
committerMarcel Holtmann <marcel@holtmann.org>2008-07-14 20:13:50 +0200
commit40be492fe4fab829951681860c2bb26fa1d5fe4a (patch)
tree41b576692c2206c9a51e689f54170076ec95bc3a
parentf8558555f31e177e2644f3c8116801c3e5c29974 (diff)
[Bluetooth] Export details about authentication requirements
With the Simple Pairing support, the authentication requirements are an explicit setting during the bonding process. Track and enforce the requirements and allow higher layers like L2CAP and RFCOMM to increase them if needed. This patch introduces a new IOCTL that allows to query the current authentication requirements. It is also possible to detect Simple Pairing support in the kernel this way. Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
-rw-r--r--fs/compat_ioctl.c1
-rw-r--r--include/net/bluetooth/hci.h18
-rw-r--r--include/net/bluetooth/hci_core.h2
-rw-r--r--net/bluetooth/hci_conn.c38
-rw-r--r--net/bluetooth/hci_sock.c18
-rw-r--r--net/bluetooth/l2cap.c14
-rw-r--r--net/bluetooth/rfcomm/core.c3
7 files changed, 68 insertions, 26 deletions
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 97dba0d9234..d63d430d3b2 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -2399,6 +2399,7 @@ COMPATIBLE_IOCTL(HCIGETDEVLIST)
COMPATIBLE_IOCTL(HCIGETDEVINFO)
COMPATIBLE_IOCTL(HCIGETCONNLIST)
COMPATIBLE_IOCTL(HCIGETCONNINFO)
+COMPATIBLE_IOCTL(HCIGETAUTHINFO)
COMPATIBLE_IOCTL(HCISETRAW)
COMPATIBLE_IOCTL(HCISETSCAN)
COMPATIBLE_IOCTL(HCISETAUTH)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index 55576e84882..3cc29491931 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -72,8 +72,6 @@ enum {
HCI_INQUIRY,
HCI_RAW,
-
- HCI_SECMGR
};
/* HCI ioctl defines */
@@ -86,6 +84,7 @@ enum {
#define HCIGETDEVINFO _IOR('H', 211, int)
#define HCIGETCONNLIST _IOR('H', 212, int)
#define HCIGETCONNINFO _IOR('H', 213, int)
+#define HCIGETAUTHINFO _IOR('H', 215, int)
#define HCISETRAW _IOW('H', 220, int)
#define HCISETSCAN _IOW('H', 221, int)
@@ -97,8 +96,6 @@ enum {
#define HCISETACLMTU _IOW('H', 227, int)
#define HCISETSCOMTU _IOW('H', 228, int)
-#define HCISETSECMGR _IOW('H', 230, int)
-
#define HCIINQUIRY _IOR('H', 240, int)
/* HCI timeouts */
@@ -203,6 +200,14 @@ enum {
#define HCI_LM_RELIABLE 0x0010
#define HCI_LM_SECURE 0x0020
+/* Authentication types */
+#define HCI_AT_NO_BONDING 0x00
+#define HCI_AT_NO_BONDING_MITM 0x01
+#define HCI_AT_DEDICATED_BONDING 0x02
+#define HCI_AT_DEDICATED_BONDING_MITM 0x03
+#define HCI_AT_GENERAL_BONDING 0x04
+#define HCI_AT_GENERAL_BONDING_MITM 0x05
+
/* ----- HCI Commands ---- */
#define HCI_OP_INQUIRY 0x0401
struct hci_cp_inquiry {
@@ -1001,6 +1006,11 @@ struct hci_conn_info_req {
struct hci_conn_info conn_info[0];
};
+struct hci_auth_info_req {
+ bdaddr_t bdaddr;
+ __u8 type;
+};
+
struct hci_inquiry_req {
__u16 dev_id;
__u16 flags;
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 28fbd0caa53..cbf75109468 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -168,6 +168,7 @@ struct hci_conn {
__u16 pkt_type;
__u16 link_policy;
__u32 link_mode;
+ __u8 auth_type;
__u8 power_save;
unsigned long pend;
@@ -422,6 +423,7 @@ int hci_get_dev_list(void __user *arg);
int hci_get_dev_info(void __user *arg);
int hci_get_conn_list(void __user *arg);
int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
+int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
int hci_inquiry(void __user *arg);
void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 6f22533e765..0d4b8aeb8e0 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -379,13 +379,21 @@ int hci_conn_auth(struct hci_conn *conn)
{
BT_DBG("conn %p", conn);
+ if (conn->ssp_mode > 0 && conn->hdev->ssp_mode > 0) {
+ if (!(conn->auth_type & 0x01)) {
+ conn->auth_type = HCI_AT_GENERAL_BONDING_MITM;
+ conn->link_mode &= ~HCI_LM_AUTH;
+ }
+ }
+
if (conn->link_mode & HCI_LM_AUTH)
return 1;
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
struct hci_cp_auth_requested cp;
cp.handle = cpu_to_le16(conn->handle);
- hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp);
+ hci_send_cmd(conn->hdev, HCI_OP_AUTH_REQUESTED,
+ sizeof(cp), &cp);
}
return 0;
}
@@ -397,7 +405,7 @@ int hci_conn_encrypt(struct hci_conn *conn)
BT_DBG("conn %p", conn);
if (conn->link_mode & HCI_LM_ENCRYPT)
- return 1;
+ return hci_conn_auth(conn);
if (test_and_set_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
return 0;
@@ -406,7 +414,8 @@ int hci_conn_encrypt(struct hci_conn *conn)
struct hci_cp_set_conn_encrypt cp;
cp.handle = cpu_to_le16(conn->handle);
cp.encrypt = 1;
- hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), &cp);
+ hci_send_cmd(conn->hdev, HCI_OP_SET_CONN_ENCRYPT,
+ sizeof(cp), &cp);
}
return 0;
}
@@ -420,7 +429,8 @@ int hci_conn_change_link_key(struct hci_conn *conn)
if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->pend)) {
struct hci_cp_change_conn_link_key cp;
cp.handle = cpu_to_le16(conn->handle);
- hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY, sizeof(cp), &cp);
+ hci_send_cmd(conn->hdev, HCI_OP_CHANGE_CONN_LINK_KEY,
+ sizeof(cp), &cp);
}
return 0;
}
@@ -624,3 +634,23 @@ int hci_get_conn_info(struct hci_dev *hdev, void __user *arg)
return copy_to_user(ptr, &ci, sizeof(ci)) ? -EFAULT : 0;
}
+
+int hci_get_auth_info(struct hci_dev *hdev, void __user *arg)
+{
+ struct hci_auth_info_req req;
+ struct hci_conn *conn;
+
+ if (copy_from_user(&req, arg, sizeof(req)))
+ return -EFAULT;
+
+ hci_dev_lock_bh(hdev);
+ conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &req.bdaddr);
+ if (conn)
+ req.type = conn->auth_type;
+ hci_dev_unlock_bh(hdev);
+
+ if (!conn)
+ return -ENOENT;
+
+ return copy_to_user(arg, &req, sizeof(req)) ? -EFAULT : 0;
+}
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 747fabd735d..d62579b6795 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -193,19 +193,11 @@ static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsign
return 0;
- case HCISETSECMGR:
- if (!capable(CAP_NET_ADMIN))
- return -EACCES;
-
- if (arg)
- set_bit(HCI_SECMGR, &hdev->flags);
- else
- clear_bit(HCI_SECMGR, &hdev->flags);
-
- return 0;
-
case HCIGETCONNINFO:
- return hci_get_conn_info(hdev, (void __user *)arg);
+ return hci_get_conn_info(hdev, (void __user *) arg);
+
+ case HCIGETAUTHINFO:
+ return hci_get_auth_info(hdev, (void __user *) arg);
default:
if (hdev->ioctl)
@@ -217,7 +209,7 @@ static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsign
static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
struct sock *sk = sock->sk;
- void __user *argp = (void __user *)arg;
+ void __user *argp = (void __user *) arg;
int err;
BT_DBG("cmd %x arg %lx", cmd, arg);
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index 252264062f5..30ad59b717d 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -2150,7 +2150,7 @@ static int l2cap_disconn_ind(struct hci_conn *hcon, u8 reason)
static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
{
struct l2cap_chan_list *l;
- struct l2cap_conn *conn = conn = hcon->l2cap_data;
+ struct l2cap_conn *conn = hcon->l2cap_data;
struct l2cap_conn_rsp rsp;
struct sock *sk;
int result;
@@ -2165,11 +2165,17 @@ static int l2cap_auth_cfm(struct hci_conn *hcon, u8 status)
read_lock(&l->lock);
for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
+ struct l2cap_pinfo *pi = l2cap_pi(sk);
+
bh_lock_sock(sk);
- if (sk->sk_state != BT_CONNECT2 ||
- (l2cap_pi(sk)->link_mode & L2CAP_LM_ENCRYPT) ||
- (l2cap_pi(sk)->link_mode & L2CAP_LM_SECURE)) {
+ if (sk->sk_state != BT_CONNECT2) {
+ bh_unlock_sock(sk);
+ continue;
+ }
+
+ if ((pi->link_mode & (L2CAP_LM_ENCRYPT | L2CAP_LM_SECURE)) &&
+ !(hcon->link_mode & HCI_LM_ENCRYPT)) {
bh_unlock_sock(sk);
continue;
}
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index e7a6a03cea3..e56bcfc35a4 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -1969,7 +1969,8 @@ static void rfcomm_auth_cfm(struct hci_conn *conn, u8 status)
list_for_each_safe(p, n, &s->dlcs) {
d = list_entry(p, struct rfcomm_dlc, list);
- if (d->link_mode & (RFCOMM_LM_ENCRYPT | RFCOMM_LM_SECURE))
+ if ((d->link_mode & (RFCOMM_LM_ENCRYPT | RFCOMM_LM_SECURE)) &&
+ !(conn->link_mode & HCI_LM_ENCRYPT) && !status)
continue;
if (!test_and_clear_bit(RFCOMM_AUTH_PENDING, &d->flags))