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Bluetooth: Add support for SC just-works pairing

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If the just-works method was chosen we shouldn't send anything to user
space but simply proceed with sending the DHKey Check PDU. This patch
adds the necessary code for it.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Johan Hedberg 2014-06-01 15:38:09 +03:00 committed by Marcel Holtmann
parent d378a2d776
commit dddd3059e3
1 changed files with 27 additions and 12 deletions
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37
net/bluetooth/smp.c
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@ -1198,22 +1198,13 @@ static int sc_mackey_and_ltk(struct smp_chan *smp, u8 mackey[16], u8 ltk[16])
return smp_f5(smp->tfm_cmac, smp->dhkey, na, nb, a, b, mackey, ltk);
}
static int sc_user_reply(struct smp_chan *smp, u16 mgmt_op, __le32 passkey)
static void sc_dhkey_check(struct smp_chan *smp, __le32 passkey)
{
struct hci_conn *hcon = smp->conn->hcon;
struct smp_cmd_dhkey_check check;
u8 a[7], b[7], *local_addr, *remote_addr;
u8 io_cap[3], r[16];
switch (mgmt_op) {
case MGMT_OP_USER_PASSKEY_NEG_REPLY:
smp_failure(smp->conn, SMP_PASSKEY_ENTRY_FAILED);
return 0;
case MGMT_OP_USER_CONFIRM_NEG_REPLY:
smp_failure(smp->conn, SMP_NUMERIC_COMP_FAILED);
return 0;
}
memcpy(a, &hcon->init_addr, 6);
memcpy(b, &hcon->resp_addr, 6);
a[6] = hcon->init_addr_type;
@ -1229,13 +1220,29 @@ static int sc_user_reply(struct smp_chan *smp, u16 mgmt_op, __le32 passkey)
memcpy(io_cap, &smp->prsp[1], 3);
}
memset(r, 0, sizeof(r));
if (smp->method == REQ_PASSKEY || smp->method == DSP_PASSKEY)
memcpy(r, &passkey, sizeof(passkey));
memset(r + sizeof(passkey), 0, sizeof(r) - sizeof(passkey));
smp_f6(smp->tfm_cmac, smp->mackey, smp->prnd, smp->rrnd, r, io_cap,
local_addr, remote_addr, check.e);
smp_send_cmd(smp->conn, SMP_CMD_DHKEY_CHECK, sizeof(check), &check);
}
static int sc_user_reply(struct smp_chan *smp, u16 mgmt_op, __le32 passkey)
{
switch (mgmt_op) {
case MGMT_OP_USER_PASSKEY_NEG_REPLY:
smp_failure(smp->conn, SMP_PASSKEY_ENTRY_FAILED);
return 0;
case MGMT_OP_USER_CONFIRM_NEG_REPLY:
smp_failure(smp->conn, SMP_NUMERIC_COMP_FAILED);
return 0;
}
sc_dhkey_check(smp, passkey);
return 0;
}
@ -1599,6 +1606,14 @@ static u8 smp_cmd_pairing_random(struct l2cap_conn *conn, struct sk_buff *skb)
if (err)
return SMP_UNSPECIFIED;
if (smp->method == JUST_WORKS) {
if (hcon->out) {
sc_dhkey_check(smp, passkey);
SMP_ALLOW_CMD(smp, SMP_CMD_DHKEY_CHECK);
}
return 0;
}
err = mgmt_user_confirm_request(hcon->hdev, &hcon->dst,
hcon->type, hcon->dst_type,
passkey, 0);