From: Anderson Briglia <anderson.briglia@xxxxxxxxxxxxx>
These simple commands will allow the SMP procedure to be started
and terminated with a not supported error. This is the first step
toward something useful.
Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@xxxxxxxxxxxxx>
Signed-off-by: Anderson Briglia <anderson.briglia@xxxxxxxxxxxxx>
Signed-off-by: Gustavo F. Padovan <padovan@xxxxxxxxxxxxxx>
---
include/net/bluetooth/smp.h | 26 ++++++++
net/bluetooth/Makefile | 2 +-
net/bluetooth/smp.c | 146 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 173 insertions(+), 1 deletions(-)
create mode 100644 net/bluetooth/smp.c
diff --git a/include/net/bluetooth/smp.h b/include/net/bluetooth/smp.h
index 8f2edbf..36bdd6e 100644
--- a/include/net/bluetooth/smp.h
+++ b/include/net/bluetooth/smp.h
@@ -1,3 +1,25 @@
+/*
+ BlueZ - Bluetooth protocol stack for Linux
+ Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 as
+ published by the Free Software Foundation;
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+ IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ SOFTWARE IS DISCLAIMED.
+*/
+
#ifndef __SMP_H
#define __SMP_H
@@ -73,4 +95,8 @@ struct smp_cmd_security_req {
#define SMP_UNSPECIFIED 0x08
#define SMP_REPEATED_ATTEMPTS 0x09
+/* SMP Commands */
+int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level);
+int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb);
+
#endif /* __SMP_H */
diff --git a/net/bluetooth/Makefile b/net/bluetooth/Makefile
index f04fe9a..9b67f3d 100644
--- a/net/bluetooth/Makefile
+++ b/net/bluetooth/Makefile
@@ -9,5 +9,5 @@ obj-$(CONFIG_BT_CMTP) += cmtp/
obj-$(CONFIG_BT_HIDP) += hidp/
bluetooth-y := af_bluetooth.o hci_core.o hci_conn.o hci_event.o mgmt.o hci_sock.o hci_sysfs.o lib.o
-bluetooth-$(CONFIG_BT_L2CAP) += l2cap_core.o l2cap_sock.o
+bluetooth-$(CONFIG_BT_L2CAP) += l2cap_core.o l2cap_sock.o smp.o
bluetooth-$(CONFIG_BT_SCO) += sco.o
diff --git a/net/bluetooth/smp.c b/net/bluetooth/smp.c
new file mode 100644
index 0000000..aa0434f
--- /dev/null
+++ b/net/bluetooth/smp.c
@@ -0,0 +1,146 @@
+/*
+ BlueZ - Bluetooth protocol stack for Linux
+ Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License version 2 as
+ published by the Free Software Foundation;
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
+ IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
+ CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
+ WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+ ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
+ COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
+ SOFTWARE IS DISCLAIMED.
+*/
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+#include <net/bluetooth/l2cap.h>
+#include <net/bluetooth/smp.h>
+
+static struct sk_buff *smp_build_cmd(struct l2cap_conn *conn, u8 code,
+ u16 dlen, void *data)
+{
+ struct sk_buff *skb;
+ struct l2cap_hdr *lh;
+ int len;
+
+ len = L2CAP_HDR_SIZE + sizeof(code) + dlen;
+
+ if (len > conn->mtu)
+ return NULL;
+
+ skb = bt_skb_alloc(len, GFP_ATOMIC);
+ if (!skb)
+ return NULL;
+
+ lh = (struct l2cap_hdr *) skb_put(skb, L2CAP_HDR_SIZE);
+ lh->len = cpu_to_le16(sizeof(code) + dlen);
+ lh->cid = cpu_to_le16(L2CAP_CID_SMP);
+
+ memcpy(skb_put(skb, sizeof(code)), &code, sizeof(code));
+
+ memcpy(skb_put(skb, dlen), data, dlen);
+
+ return skb;
+}
+
+static void smp_send_cmd(struct l2cap_conn *conn, u8 code, u16 len, void *data)
+{
+ struct sk_buff *skb = smp_build_cmd(conn, code, len, data);
+
+ BT_DBG("code 0x%2.2x", code);
+
+ if (!skb)
+ return;
+
+ hci_send_acl(conn->hcon, skb, 0);
+}
+
+int smp_conn_security(struct l2cap_conn *conn, __u8 sec_level)
+{
+ __u8 authreq;
+
+ BT_DBG("conn %p hcon %p level 0x%2.2x", conn, conn->hcon, sec_level);
+
+ switch (sec_level) {
+ case BT_SECURITY_MEDIUM:
+ /* Encrypted, no MITM protection */
+ authreq = HCI_AT_NO_BONDING_MITM;
+ break;
+
+ case BT_SECURITY_HIGH:
+ /* Bonding, MITM protection */
+ authreq = HCI_AT_GENERAL_BONDING_MITM;
+ break;
+
+ case BT_SECURITY_LOW:
+ default:
+ return 1;
+ }
+
+ if (conn->hcon->link_mode & HCI_LM_MASTER) {
+ struct smp_cmd_pairing cp;
+ cp.io_capability = 0x00;
+ cp.oob_flag = 0x00;
+ cp.max_key_size = 16;
+ cp.init_key_dist = 0x00;
+ cp.resp_key_dist = 0x00;
+ cp.auth_req = authreq;
+ smp_send_cmd(conn, SMP_CMD_PAIRING_REQ, sizeof(cp), &cp);
+ } else {
+ struct smp_cmd_security_req cp;
+ cp.auth_req = authreq;
+ smp_send_cmd(conn, SMP_CMD_SECURITY_REQ, sizeof(cp), &cp);
+ }
+
+ return 0;
+}
+
+int smp_sig_channel(struct l2cap_conn *conn, struct sk_buff *skb)
+{
+ __u8 code = skb->data[0];
+ __u8 reason;
+ int err = 0;
+
+ skb_pull(skb, sizeof(code));
+
+ switch (code) {
+ case SMP_CMD_PAIRING_REQ:
+ reason = SMP_PAIRING_NOTSUPP;
+ smp_send_cmd(conn, SMP_CMD_PAIRING_FAIL, sizeof(reason),
+ &reason);
+ err = -EOPNOTSUPP;
+ break;
+
+ case SMP_CMD_PAIRING_FAIL:
+ break;
+
+ case SMP_CMD_PAIRING_RSP:
+ case SMP_CMD_PAIRING_CONFIRM:
+ case SMP_CMD_PAIRING_RANDOM:
+ case SMP_CMD_ENCRYPT_INFO:
+ case SMP_CMD_MASTER_IDENT:
+ case SMP_CMD_IDENT_INFO:
+ case SMP_CMD_IDENT_ADDR_INFO:
+ case SMP_CMD_SIGN_INFO:
+ case SMP_CMD_SECURITY_REQ:
+ default:
+ BT_DBG("Unknown command code 0x%2.2x", code);
+
+ reason = SMP_CMD_NOTSUPP;
+ smp_send_cmd(conn, SMP_CMD_PAIRING_FAIL, sizeof(reason),
+ &reason);
+ err = -EOPNOTSUPP;
+ }
+
+ kfree_skb(skb);
+ return err;
+}
--
1.7.5.4
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