1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.android.settings.datausage;
import static android.net.NetworkPolicyManager.POLICY_ALLOW_METERED_BACKGROUND;
import static android.net.NetworkPolicyManager.POLICY_NONE;
import static android.net.NetworkPolicyManager.POLICY_REJECT_METERED_BACKGROUND;
import android.app.settings.SettingsEnums;
import android.content.Context;
import android.net.INetworkPolicyListener;
import android.net.NetworkPolicyManager;
import android.os.RemoteException;
import android.telephony.SubscriptionPlan;
import android.util.SparseIntArray;
import com.android.settings.overlay.FeatureFactory;
import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;
import com.android.settingslib.utils.ThreadUtils;
import java.util.ArrayList;
public class DataSaverBackend {
private static final String TAG = "DataSaverBackend";
private final Context mContext;
private final MetricsFeatureProvider mMetricsFeatureProvider;
private final NetworkPolicyManager mPolicyManager;
private final ArrayList<Listener> mListeners = new ArrayList<>();
private SparseIntArray mUidPolicies = new SparseIntArray();
private boolean mWhitelistInitialized;
private boolean mBlacklistInitialized;
// TODO: Staticize into only one.
public DataSaverBackend(Context context) {
mContext = context;
mMetricsFeatureProvider = FeatureFactory.getFactory(context).getMetricsFeatureProvider();
mPolicyManager = NetworkPolicyManager.from(context);
}
public void addListener(Listener listener) {
mListeners.add(listener);
if (mListeners.size() == 1) {
mPolicyManager.registerListener(mPolicyListener);
}
listener.onDataSaverChanged(isDataSaverEnabled());
}
public void remListener(Listener listener) {
mListeners.remove(listener);
if (mListeners.size() == 0) {
mPolicyManager.unregisterListener(mPolicyListener);
}
}
public boolean isDataSaverEnabled() {
return mPolicyManager.getRestrictBackground();
}
public void setDataSaverEnabled(boolean enabled) {
mPolicyManager.setRestrictBackground(enabled);
mMetricsFeatureProvider.action(
mContext, SettingsEnums.ACTION_DATA_SAVER_MODE, enabled ? 1 : 0);
}
public void refreshWhitelist() {
loadWhitelist();
}
public void setIsWhitelisted(int uid, String packageName, boolean whitelisted) {
final int policy = whitelisted ? POLICY_ALLOW_METERED_BACKGROUND : POLICY_NONE;
mPolicyManager.setUidPolicy(uid, policy);
mUidPolicies.put(uid, policy);
if (whitelisted) {
mMetricsFeatureProvider.action(
mContext, SettingsEnums.ACTION_DATA_SAVER_WHITELIST, packageName);
}
}
public boolean isWhitelisted(int uid) {
loadWhitelist();
return mUidPolicies.get(uid, POLICY_NONE) == POLICY_ALLOW_METERED_BACKGROUND;
}
private void loadWhitelist() {
if (mWhitelistInitialized) {
return;
}
for (int uid : mPolicyManager.getUidsWithPolicy(POLICY_ALLOW_METERED_BACKGROUND)) {
mUidPolicies.put(uid, POLICY_ALLOW_METERED_BACKGROUND);
}
mWhitelistInitialized = true;
}
public void refreshBlacklist() {
loadBlacklist();
}
public void setIsBlacklisted(int uid, String packageName, boolean blacklisted) {
final int policy = blacklisted ? POLICY_REJECT_METERED_BACKGROUND : POLICY_NONE;
mPolicyManager.setUidPolicy(uid, policy);
mUidPolicies.put(uid, policy);
if (blacklisted) {
mMetricsFeatureProvider.action(
mContext, SettingsEnums.ACTION_DATA_SAVER_BLACKLIST, packageName);
}
}
public boolean isBlacklisted(int uid) {
loadBlacklist();
return mUidPolicies.get(uid, POLICY_NONE) == POLICY_REJECT_METERED_BACKGROUND;
}
private void loadBlacklist() {
if (mBlacklistInitialized) {
return;
}
for (int uid : mPolicyManager.getUidsWithPolicy(POLICY_REJECT_METERED_BACKGROUND)) {
mUidPolicies.put(uid, POLICY_REJECT_METERED_BACKGROUND);
}
mBlacklistInitialized = true;
}
private void handleRestrictBackgroundChanged(boolean isDataSaving) {
for (int i = 0; i < mListeners.size(); i++) {
mListeners.get(i).onDataSaverChanged(isDataSaving);
}
}
private void handleWhitelistChanged(int uid, boolean isWhitelisted) {
for (int i = 0; i < mListeners.size(); i++) {
mListeners.get(i).onWhitelistStatusChanged(uid, isWhitelisted);
}
}
private void handleBlacklistChanged(int uid, boolean isBlacklisted) {
for (int i = 0; i < mListeners.size(); i++) {
mListeners.get(i).onBlacklistStatusChanged(uid, isBlacklisted);
}
}
private void handleUidPoliciesChanged(int uid, int newPolicy) {
loadWhitelist();
loadBlacklist();
final int oldPolicy = mUidPolicies.get(uid, POLICY_NONE);
if (newPolicy == POLICY_NONE) {
mUidPolicies.delete(uid);
} else {
mUidPolicies.put(uid, newPolicy);
}
final boolean wasWhitelisted = oldPolicy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean wasBlacklisted = oldPolicy == POLICY_REJECT_METERED_BACKGROUND;
final boolean isWhitelisted = newPolicy == POLICY_ALLOW_METERED_BACKGROUND;
final boolean isBlacklisted = newPolicy == POLICY_REJECT_METERED_BACKGROUND;
if (wasWhitelisted != isWhitelisted) {
handleWhitelistChanged(uid, isWhitelisted);
}
if (wasBlacklisted != isBlacklisted) {
handleBlacklistChanged(uid, isBlacklisted);
}
}
private final INetworkPolicyListener mPolicyListener = new INetworkPolicyListener.Stub() {
@Override
public void onUidRulesChanged(int uid, int uidRules) throws RemoteException {
}
@Override
public void onUidPoliciesChanged(final int uid, final int uidPolicies) {
ThreadUtils.postOnMainThread(() -> handleUidPoliciesChanged(uid, uidPolicies));
}
@Override
public void onMeteredIfacesChanged(String[] strings) throws RemoteException {
}
@Override
public void onRestrictBackgroundChanged(final boolean isDataSaving) throws RemoteException {
ThreadUtils.postOnMainThread(() -> handleRestrictBackgroundChanged(isDataSaving));
}
@Override
public void onSubscriptionOverride(int subId, int overrideMask, int overrideValue) {
}
@Override
public void onSubscriptionPlansChanged(int subId, SubscriptionPlan[] plans) {
}
};
public interface Listener {
void onDataSaverChanged(boolean isDataSaving);
void onWhitelistStatusChanged(int uid, boolean isWhitelisted);
void onBlacklistStatusChanged(int uid, boolean isBlacklisted);
}
}
|
