1 /*
2 * Copyright (c) 2020, The OpenThread Authors.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * 3. Neither the name of the copyright holder nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
26 * POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 /**
30 * @file
31 * This file implements Thread Management Framework (TMF) functionalities.
32 */
33
34 #include "thread/tmf.hpp"
35
36 #include "common/locator_getters.hpp"
37
38 namespace ot {
39 namespace Tmf {
40
Start(void)41 Error Agent::Start(void)
42 {
43 return Coap::Start(kUdpPort, OT_NETIF_THREAD);
44 }
45
Filter(const ot::Coap::Message & aMessage,const Ip6::MessageInfo & aMessageInfo,void * aContext)46 Error Agent::Filter(const ot::Coap::Message &aMessage, const Ip6::MessageInfo &aMessageInfo, void *aContext)
47 {
48 OT_UNUSED_VARIABLE(aMessage);
49
50 return static_cast<Agent *>(aContext)->IsTmfMessage(aMessageInfo) ? kErrorNone : kErrorNotTmf;
51 }
52
IsTmfMessage(const Ip6::MessageInfo & aMessageInfo) const53 bool Agent::IsTmfMessage(const Ip6::MessageInfo &aMessageInfo) const
54 {
55 bool rval = true;
56
57 // A TMF message must comply with following rules:
58 // 1. The destination is a Mesh Local Address or a Link-Local Multicast Address or a Realm-Local Multicast Address,
59 // and the source is a Mesh Local Address. Or
60 // 2. Both the destination and the source are Link-Local Addresses.
61 VerifyOrExit(
62 ((Get<Mle::MleRouter>().IsMeshLocalAddress(aMessageInfo.GetSockAddr()) ||
63 aMessageInfo.GetSockAddr().IsLinkLocalMulticast() || aMessageInfo.GetSockAddr().IsRealmLocalMulticast()) &&
64 Get<Mle::MleRouter>().IsMeshLocalAddress(aMessageInfo.GetPeerAddr())) ||
65 ((aMessageInfo.GetSockAddr().IsLinkLocal() || aMessageInfo.GetSockAddr().IsLinkLocalMulticast()) &&
66 aMessageInfo.GetPeerAddr().IsLinkLocal()),
67 rval = false);
68 exit:
69 return rval;
70 }
71
72 } // namespace Tmf
73 } // namespace ot
74
