1 /*
2 * Copyright (c) 2023, 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 infrastructure DNS-SD (mDNS) platform APIs.
32 */
33
34 #include "dnssd.hpp"
35
36 #if OPENTHREAD_CONFIG_PLATFORM_DNSSD_ENABLE
37
38 #include "common/code_utils.hpp"
39 #include "common/locator_getters.hpp"
40 #include "instance/instance.hpp"
41
42 namespace ot {
43
44 //---------------------------------------------------------------------------------------------------------------------
45 // Dnssd::RequestIdRange
46
Add(RequestId aId)47 void Dnssd::RequestIdRange::Add(RequestId aId)
48 {
49 if (IsEmpty())
50 {
51 mStart = aId;
52 mEnd = aId + 1;
53 }
54 else if (SerialNumber::IsLess(aId, mStart)) // Equivalent to (aId < mStart)
55 {
56 mStart = aId;
57 }
58 else if (!SerialNumber::IsLess(aId, mEnd)) // Equivalent to !(aId < mEd) -> (aId >= mEnd)
59 {
60 mEnd = aId + 1;
61 }
62 }
63
Remove(RequestId aId)64 void Dnssd::RequestIdRange::Remove(RequestId aId)
65 {
66 if (!IsEmpty())
67 {
68 if (aId == mStart)
69 {
70 mStart++;
71 }
72 else if (aId + 1 == mEnd)
73 {
74 mEnd--;
75 }
76 }
77 }
78
Contains(RequestId aId) const79 bool Dnssd::RequestIdRange::Contains(RequestId aId) const
80 {
81 // Equivalent to `(aId >= mStart) && (aId < mEnd)`
82
83 return (!SerialNumber::IsLess(aId, mStart) && SerialNumber::IsLess(aId, mEnd));
84 }
85
86 //---------------------------------------------------------------------------------------------------------------------
87 // Dnssd
88
Dnssd(Instance & aInstance)89 Dnssd::Dnssd(Instance &aInstance)
90 : InstanceLocator(aInstance)
91 {
92 }
93
GetState(void) const94 Dnssd::State Dnssd::GetState(void) const { return MapEnum(otPlatDnssdGetState(&GetInstance())); }
95
RegisterService(const Service & aService,RequestId aRequestId,RegisterCallback aCallback)96 void Dnssd::RegisterService(const Service &aService, RequestId aRequestId, RegisterCallback aCallback)
97 {
98 if (IsReady())
99 {
100 otPlatDnssdRegisterService(&GetInstance(), &aService, aRequestId, aCallback);
101 }
102 }
103
UnregisterService(const Service & aService,RequestId aRequestId,RegisterCallback aCallback)104 void Dnssd::UnregisterService(const Service &aService, RequestId aRequestId, RegisterCallback aCallback)
105 {
106 if (IsReady())
107 {
108 otPlatDnssdUnregisterService(&GetInstance(), &aService, aRequestId, aCallback);
109 }
110 }
111
RegisterHost(const Host & aHost,RequestId aRequestId,RegisterCallback aCallback)112 void Dnssd::RegisterHost(const Host &aHost, RequestId aRequestId, RegisterCallback aCallback)
113 {
114 if (IsReady())
115 {
116 otPlatDnssdRegisterHost(&GetInstance(), &aHost, aRequestId, aCallback);
117 }
118 }
119
UnregisterHost(const Host & aHost,RequestId aRequestId,RegisterCallback aCallback)120 void Dnssd::UnregisterHost(const Host &aHost, RequestId aRequestId, RegisterCallback aCallback)
121 {
122 if (IsReady())
123 {
124 otPlatDnssdUnregisterHost(&GetInstance(), &aHost, aRequestId, aCallback);
125 }
126 }
127
RegisterKey(const Key & aKey,RequestId aRequestId,RegisterCallback aCallback)128 void Dnssd::RegisterKey(const Key &aKey, RequestId aRequestId, RegisterCallback aCallback)
129 {
130 if (IsReady())
131 {
132 otPlatDnssdRegisterKey(&GetInstance(), &aKey, aRequestId, aCallback);
133 }
134 }
135
UnregisterKey(const Key & aKey,RequestId aRequestId,RegisterCallback aCallback)136 void Dnssd::UnregisterKey(const Key &aKey, RequestId aRequestId, RegisterCallback aCallback)
137 {
138 if (IsReady())
139 {
140 otPlatDnssdUnregisterKey(&GetInstance(), &aKey, aRequestId, aCallback);
141 }
142 }
143
HandleStateChange(void)144 void Dnssd::HandleStateChange(void)
145 {
146 #if OPENTHREAD_CONFIG_SRP_SERVER_ADVERTISING_PROXY_ENABLE
147 Get<Srp::AdvertisingProxy>().HandleDnssdPlatformStateChange();
148 #endif
149 }
150
otPlatDnssdStateHandleStateChange(otInstance * aInstance)151 extern "C" void otPlatDnssdStateHandleStateChange(otInstance *aInstance)
152 {
153 AsCoreType(aInstance).Get<Dnssd>().HandleStateChange();
154 }
155
156 } // namespace ot
157
158 #endif // OPENTHREAD_CONFIG_PLATFORM_DNSSD_ENABLE
159