1 /*
2 * Copyright 2020 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 "sysprops/sysprops_module.h"
18
19 #include <filesystem>
20
21 #include "os/handler.h"
22 #include "os/log.h"
23 #include "os/parameter_provider.h"
24 #include "os/system_properties.h"
25 #include "storage/legacy_config_file.h"
26
27 namespace bluetooth {
28 namespace sysprops {
29
30 static const size_t kDefaultCapacity = 10000;
31 static const char* kAflagSection = "Aflags";
32 static const char* kAflagPrefix = "persist.device_config.aconfig_flags.bluetooth.";
33
SyspropsModule()34 SyspropsModule::SyspropsModule() {}
~SyspropsModule()35 SyspropsModule::~SyspropsModule() {
36 pimpl_.reset();
37 }
38
__anon412fd4560102() 39 const ModuleFactory SyspropsModule::Factory = ModuleFactory([]() { return new SyspropsModule(); });
40
41 struct SyspropsModule::impl {
implbluetooth::sysprops::SyspropsModule::impl42 impl(os::Handler* sysprops_handler) : sysprops_handler_(sysprops_handler) {}
43
44 os::Handler* sysprops_handler_;
45 };
46
ListDependencies(ModuleList *) const47 void SyspropsModule::ListDependencies(ModuleList* /* list */) const {}
48
Start()49 void SyspropsModule::Start() {
50 std::string file_path = os::ParameterProvider::SyspropsFilePath();
51 if (!file_path.empty()) {
52 parse_config(file_path);
53 // Merge config fragments
54 std::string override_dir = file_path + ".d";
55 if (std::filesystem::exists(override_dir)) {
56 for (const auto& entry : std::filesystem::directory_iterator(override_dir)) {
57 parse_config(entry.path());
58 }
59 }
60 }
61
62 pimpl_ = std::make_unique<impl>(GetHandler());
63 }
64
Stop()65 void SyspropsModule::Stop() {
66 pimpl_.reset();
67 }
68
ToString() const69 std::string SyspropsModule::ToString() const {
70 return "Sysprops Module";
71 }
72
parse_config(std::string file_path)73 void SyspropsModule::parse_config(std::string file_path) {
74 const std::list<std::string> supported_sysprops = {
75 // General
76 "bluetooth.btm.sec.delay_auth_ms.value",
77 "bluetooth.device.default_name",
78 "bluetooth.core.gap.le.privacy.enabled",
79 "bluetooth.core.gap.le.privacy.own_address_type.enabled",
80 "bluetooth.core.gap.le.conn.only_init_1m_phy.enabled",
81 "bluetooth.device.class_of_device",
82 "bluetooth.device_id.product_id",
83 "bluetooth.device_id.product_version",
84 "bluetooth.device_id.vendor_id",
85 "bluetooth.device_id.vendor_id_source",
86 "persist.bluetooth.inq_by_rssi",
87 // BR/EDR
88 "bluetooth.core.classic.page_scan_type",
89 "bluetooth.core.classic.page_scan_interval",
90 "bluetooth.core.classic.page_scan_window",
91 "bluetooth.core.classic.inq_scan_type",
92 "bluetooth.core.classic.inq_scan_interval",
93 "bluetooth.core.classic.inq_scan_window",
94 "bluetooth.core.classic.inq_length",
95 "bluetooth.core.acl.link_supervision_timeout",
96 "bluetooth.core.classic.page_timeout",
97 "bluetooth.core.classic.sniff_max_intervals",
98 "bluetooth.core.classic.sniff_min_intervals",
99 "bluetooth.core.classic.sniff_attempts",
100 "bluetooth.core.classic.sniff_timeouts",
101 // LE
102 "bluetooth.core.le.min_connection_interval",
103 "bluetooth.core.le.max_connection_interval",
104 "bluetooth.core.le.connection_latency",
105 "bluetooth.core.le.connection_supervision_timeout",
106 "bluetooth.core.le.direct_connection_timeout",
107 "bluetooth.core.le.connection_scan_interval_fast",
108 "bluetooth.core.le.connection_scan_window_fast",
109 "bluetooth.core.le.connection_scan_window_2m_fast",
110 "bluetooth.core.le.connection_scan_window_coded_fast",
111 "bluetooth.core.le.connection_scan_interval_slow",
112 "bluetooth.core.le.connection_scan_window_slow",
113 "bluetooth.core.le.connection_scan_interval_system_suspend",
114 "bluetooth.core.le.connection_scan_window_system_suspend",
115 "bluetooth.core.le.inquiry_scan_interval",
116 "bluetooth.core.le.inquiry_scan_window",
117 "bluetooth.core.le.adv_mon_scan_interval",
118 "bluetooth.core.le.adv_mon_scan_window",
119 "bluetooth.core.le.adv_mon_rtl_quirk",
120 "bluetooth.core.le.adv_mon_qca_quirk",
121 "bluetooth.core.le.vendor_capabilities.enabled",
122 // LE Audio
123 "bluetooth.le_audio.enable_le_audio_only",
124 "bluetooth.leaudio.dual_bidirection_swb.supported",
125 // SCO
126 "bluetooth.sco.disable_enhanced_connection",
127 "bluetooth.sco.swb_supported",
128 // Profile
129 "persist.bluetooth.avrcpcontrolversion",
130 };
131
132 auto config = storage::LegacyConfigFile::FromPath(file_path).Read(kDefaultCapacity);
133 if (!config) {
134 return;
135 }
136
137 for (auto s = supported_sysprops.begin(); s != supported_sysprops.end(); s++) {
138 auto str = config->GetProperty("Sysprops", *s);
139 if (str) {
140 bluetooth::os::SetSystemProperty(*s, *str);
141 }
142 }
143
144 for (const auto& name : config->GetPropertyNames(kAflagSection)) {
145 if (name.find(kAflagPrefix) == 0) {
146 auto val = config->GetProperty(kAflagSection, name);
147 if (val) {
148 bluetooth::os::SetSystemProperty(name, *val);
149 }
150 }
151 }
152 }
153
154 } // namespace sysprops
155 } // namespace bluetooth
156