1 /*
2 * Copyright (C) 2019 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <media/AudioDeviceTypeAddr.h>
18 #include <arpa/inet.h>
19 #include <iostream>
20 #include <regex>
21 #include <set>
22 #include <sstream>
23
24 #include <media/AidlConversion.h>
25
26 namespace android {
27
28 namespace {
29
30 static const std::string SUPPRESSED = "SUPPRESSED";
31 static const std::regex MAC_ADDRESS_REGEX("([0-9a-fA-F]{2}:){5}[0-9a-fA-F]{2}");
32
isSenstiveAddress(const std::string & address)33 bool isSenstiveAddress(const std::string &address) {
34 if (std::regex_match(address, MAC_ADDRESS_REGEX)) {
35 return true;
36 }
37
38 sockaddr_storage ss4;
39 if (inet_pton(AF_INET, address.c_str(), &ss4) > 0) {
40 return true;
41 }
42
43 sockaddr_storage ss6;
44 if (inet_pton(AF_INET6, address.c_str(), &ss6) > 0) {
45 return true;
46 }
47
48 return false;
49 }
50
51 } // namespace
52
AudioDeviceTypeAddr(audio_devices_t type,const std::string & address)53 AudioDeviceTypeAddr::AudioDeviceTypeAddr(audio_devices_t type, const std::string &address) :
54 mType(type), mAddress(address) {
55 mIsAddressSensitive = isSenstiveAddress(mAddress);
56 }
57
getAddress() const58 const char* AudioDeviceTypeAddr::getAddress() const {
59 return mAddress.c_str();
60 }
61
address() const62 const std::string& AudioDeviceTypeAddr::address() const {
63 return mAddress;
64 }
65
setAddress(const std::string & address)66 void AudioDeviceTypeAddr::setAddress(const std::string& address) {
67 mAddress = address;
68 mIsAddressSensitive = isSenstiveAddress(mAddress);
69 }
70
equals(const AudioDeviceTypeAddr & other) const71 bool AudioDeviceTypeAddr::equals(const AudioDeviceTypeAddr& other) const {
72 return mType == other.mType && mAddress == other.mAddress;
73 }
74
operator <(const AudioDeviceTypeAddr & other) const75 bool AudioDeviceTypeAddr::operator<(const AudioDeviceTypeAddr& other) const {
76 if (mType < other.mType) return true;
77 if (mType > other.mType) return false;
78
79 if (mAddress < other.mAddress) return true;
80 // if (mAddress > other.mAddress) return false;
81
82 return false;
83 }
84
operator ==(const AudioDeviceTypeAddr & rhs) const85 bool AudioDeviceTypeAddr::operator==(const AudioDeviceTypeAddr &rhs) const {
86 return equals(rhs);
87 }
88
operator !=(const AudioDeviceTypeAddr & rhs) const89 bool AudioDeviceTypeAddr::operator!=(const AudioDeviceTypeAddr &rhs) const {
90 return !operator==(rhs);
91 }
92
reset()93 void AudioDeviceTypeAddr::reset() {
94 mType = AUDIO_DEVICE_NONE;
95 setAddress("");
96 }
97
toString(bool includeSensitiveInfo) const98 std::string AudioDeviceTypeAddr::toString(bool includeSensitiveInfo) const {
99 std::stringstream sstream;
100 sstream << "type:0x" << std::hex << mType;
101 // IP and MAC address are sensitive information. The sensitive information will be suppressed
102 // is `includeSensitiveInfo` is false.
103 sstream << ",@:"
104 << (!includeSensitiveInfo && mIsAddressSensitive ? SUPPRESSED : mAddress);
105 return sstream.str();
106 }
107
readFromParcel(const Parcel * parcel)108 status_t AudioDeviceTypeAddr::readFromParcel(const Parcel *parcel) {
109 status_t status;
110 uint32_t rawDeviceType;
111 if ((status = parcel->readUint32(&rawDeviceType)) != NO_ERROR) return status;
112 mType = static_cast<audio_devices_t>(rawDeviceType);
113 status = parcel->readUtf8FromUtf16(&mAddress);
114 return status;
115 }
116
writeToParcel(Parcel * parcel) const117 status_t AudioDeviceTypeAddr::writeToParcel(Parcel *parcel) const {
118 status_t status;
119 if ((status = parcel->writeUint32(mType)) != NO_ERROR) return status;
120 status = parcel->writeUtf8AsUtf16(mAddress);
121 return status;
122 }
123
124
getAudioDeviceTypes(const AudioDeviceTypeAddrVector & deviceTypeAddrs)125 DeviceTypeSet getAudioDeviceTypes(const AudioDeviceTypeAddrVector& deviceTypeAddrs) {
126 DeviceTypeSet deviceTypes;
127 for (const auto& deviceTypeAddr : deviceTypeAddrs) {
128 deviceTypes.insert(deviceTypeAddr.mType);
129 }
130 return deviceTypes;
131 }
132
excludeDeviceTypeAddrsFrom(const AudioDeviceTypeAddrVector & devices,const AudioDeviceTypeAddrVector & devicesToExclude)133 AudioDeviceTypeAddrVector excludeDeviceTypeAddrsFrom(
134 const AudioDeviceTypeAddrVector& devices,
135 const AudioDeviceTypeAddrVector& devicesToExclude) {
136 std::set<AudioDeviceTypeAddr> devicesToExcludeSet(
137 devicesToExclude.begin(), devicesToExclude.end());
138 AudioDeviceTypeAddrVector remainedDevices;
139 for (const auto& device : devices) {
140 if (devicesToExcludeSet.count(device) == 0) {
141 remainedDevices.push_back(device);
142 }
143 }
144 return remainedDevices;
145 }
146
dumpAudioDeviceTypeAddrVector(const AudioDeviceTypeAddrVector & deviceTypeAddrs,bool includeSensitiveInfo)147 std::string dumpAudioDeviceTypeAddrVector(const AudioDeviceTypeAddrVector& deviceTypeAddrs,
148 bool includeSensitiveInfo) {
149 std::stringstream stream;
150 for (auto it = deviceTypeAddrs.begin(); it != deviceTypeAddrs.end(); ++it) {
151 if (it != deviceTypeAddrs.begin()) {
152 stream << " ";
153 }
154 stream << it->toString(includeSensitiveInfo);
155 }
156 return stream.str();
157 }
158
159 ConversionResult<AudioDeviceTypeAddr>
aidl2legacy_AudioDeviceTypeAddress(const media::AudioDevice & aidl)160 aidl2legacy_AudioDeviceTypeAddress(const media::AudioDevice& aidl) {
161 audio_devices_t type = VALUE_OR_RETURN(aidl2legacy_int32_t_audio_devices_t(aidl.type));
162 return AudioDeviceTypeAddr(type, aidl.address);
163 }
164
165 ConversionResult<media::AudioDevice>
legacy2aidl_AudioDeviceTypeAddress(const AudioDeviceTypeAddr & legacy)166 legacy2aidl_AudioDeviceTypeAddress(const AudioDeviceTypeAddr& legacy) {
167 media::AudioDevice aidl;
168 aidl.type = VALUE_OR_RETURN(legacy2aidl_audio_devices_t_int32_t(legacy.mType));
169 aidl.address = legacy.getAddress();
170 return aidl;
171 }
172
173 } // namespace android
174