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| 1 | +package org.microg.gms.wearable.network; |
| 2 | + |
| 3 | +import android.content.BroadcastReceiver; |
| 4 | +import android.content.Context; |
| 5 | +import android.content.Intent; |
| 6 | +import android.content.IntentFilter; |
| 7 | +import android.net.ConnectivityManager; |
| 8 | +import android.net.NetworkInfo; |
| 9 | +import android.util.Log; |
| 10 | + |
| 11 | +import com.google.android.gms.wearable.ConnectionConfiguration; |
| 12 | + |
| 13 | +import org.microg.gms.wearable.WearableImpl; |
| 14 | +import org.microg.gms.wearable.proto.RootMessage; |
| 15 | + |
| 16 | +import java.util.HashMap; |
| 17 | +import java.util.Map; |
| 18 | + |
| 19 | +public class NetworkConnectionManager implements Cloneable { |
| 20 | + private static final String TAG = "GmsWearNetMgr"; |
| 21 | + |
| 22 | + private static final long SHUTDOWN_JOIN_TIMEOUT = 5000; |
| 23 | + |
| 24 | + private final Context context; |
| 25 | + private final WearableImpl wearable; |
| 26 | + |
| 27 | + private final Map<String, NetworkConnectionThread> threads = new HashMap<>(); |
| 28 | + private final Map<String, ConnectionConfiguration> configs = new HashMap<>(); |
| 29 | + |
| 30 | + private final BroadcastReceiver connectivityReceiver; |
| 31 | + private volatile boolean shutdown = false; |
| 32 | + |
| 33 | + public NetworkConnectionManager(Context context, WearableImpl wearable) { |
| 34 | + this.context = context; |
| 35 | + this.wearable = wearable; |
| 36 | + |
| 37 | + connectivityReceiver = new BroadcastReceiver() { |
| 38 | + @Override |
| 39 | + public void onReceive(Context context, Intent intent) { |
| 40 | + if (!ConnectivityManager.EXTRA_NO_CONNECTIVITY.equals(intent.getAction())) { |
| 41 | + return; |
| 42 | + } |
| 43 | + |
| 44 | + if (intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY, false)) { |
| 45 | + return; |
| 46 | + } |
| 47 | + |
| 48 | + onNetworkAvailable(); |
| 49 | + } |
| 50 | + }; |
| 51 | + |
| 52 | + context.registerReceiver( |
| 53 | + connectivityReceiver, |
| 54 | + new IntentFilter(ConnectivityManager.EXTRA_NO_CONNECTIVITY) |
| 55 | + ); |
| 56 | + |
| 57 | + Log.d(TAG, "initialised"); |
| 58 | + } |
| 59 | + |
| 60 | + public synchronized void addConfig(ConnectionConfiguration config) { |
| 61 | + if (shutdown) { |
| 62 | + Log.w(TAG, "Manager is shut down, ignoring addConfig for " + config.address); |
| 63 | + return; |
| 64 | + } |
| 65 | + validateConfig(config); |
| 66 | + |
| 67 | + String addr = config.address; |
| 68 | + configs.put(addr, config); |
| 69 | + |
| 70 | + NetworkConnectionThread existing = threads.get(addr); |
| 71 | + if (existing != null) { |
| 72 | + if (existing.isAlive() && !existing.isInterrupted()) { |
| 73 | + Log.d(TAG, "Thread already active for " + addr + ", triggering retry"); |
| 74 | + existing.triggerRetry(); |
| 75 | + } else { |
| 76 | + Log.d(TAG, "Replacing dead thread for " + addr); |
| 77 | + existing.close(); |
| 78 | + threads.remove(addr); |
| 79 | + startThread(config); |
| 80 | + } |
| 81 | + return; |
| 82 | + } |
| 83 | + |
| 84 | + if (isNetworkAvailable()) { |
| 85 | + startThread(config); |
| 86 | + } else { |
| 87 | + Log.d(TAG, "Network unavailable, deferring connection for " + addr); |
| 88 | + } |
| 89 | + } |
| 90 | + |
| 91 | + public synchronized void removeConfig(ConnectionConfiguration config) { |
| 92 | + if (shutdown) return; |
| 93 | + validateConfig(config); |
| 94 | + |
| 95 | + String addr = config.address; |
| 96 | + configs.remove(addr); |
| 97 | + |
| 98 | + NetworkConnectionThread t = threads.remove(addr); |
| 99 | + if (t != null) { |
| 100 | + Log.d(TAG, "Removing thread for " + addr); |
| 101 | + t.close(); |
| 102 | + joinThread(t, addr); |
| 103 | + } |
| 104 | + } |
| 105 | + |
| 106 | + public synchronized void sendMessage(String address, RootMessage message) { |
| 107 | + NetworkConnectionThread t = threads.get(address); |
| 108 | + if (t == null || !t.isAlive()) { |
| 109 | + throw new IllegalArgumentException("No active connection for " + address); |
| 110 | + } |
| 111 | + t.sendMessage(message); |
| 112 | + } |
| 113 | + |
| 114 | + public synchronized boolean hasConnection(String address) { |
| 115 | + NetworkConnectionThread t = threads.get(address); |
| 116 | + return t != null && t.isAlive() && !t.isInterrupted(); |
| 117 | + } |
| 118 | + |
| 119 | + private void onNetworkAvailable() { |
| 120 | + synchronized (this) { |
| 121 | + if (shutdown) return; |
| 122 | + Log.d(TAG, "Network available — checking " + configs.size() + " config(s)"); |
| 123 | + |
| 124 | + for (Map.Entry<String, ConnectionConfiguration> entry : configs.entrySet()) { |
| 125 | + String addr = entry.getKey(); |
| 126 | + NetworkConnectionThread t = threads.get(addr); |
| 127 | + |
| 128 | + if (t == null || !t.isAlive()) { |
| 129 | + Log.d(TAG, "Starting thread for " + addr + " (network regained)"); |
| 130 | + if (t != null) threads.remove(addr); |
| 131 | + startThread(entry.getValue()); |
| 132 | + } else { |
| 133 | + t.triggerRetry(); |
| 134 | + } |
| 135 | + } |
| 136 | + } |
| 137 | + } |
| 138 | + |
| 139 | + @SuppressWarnings("deprecation") |
| 140 | + private boolean isNetworkAvailable() { |
| 141 | + ConnectivityManager cm = |
| 142 | + (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| 143 | + if (cm == null) return false; |
| 144 | + NetworkInfo info = cm.getActiveNetworkInfo(); |
| 145 | + return info != null && info.isConnected(); |
| 146 | + } |
| 147 | + |
| 148 | + public synchronized void close() { |
| 149 | + if (shutdown) return; |
| 150 | + shutdown = true; |
| 151 | + Log.d(TAG, "Shutting down NetworkConnectionManager (" + threads.size() + " thread(s))"); |
| 152 | + |
| 153 | + try { |
| 154 | + context.unregisterReceiver(connectivityReceiver); |
| 155 | + } catch (Exception e) { |
| 156 | + Log.w(TAG, "Error unregistering connectivity receiver", e); |
| 157 | + } |
| 158 | + |
| 159 | + for (NetworkConnectionThread t : threads.values()) t.close(); |
| 160 | + for (Map.Entry<String, NetworkConnectionThread> e : threads.entrySet()) { |
| 161 | + joinThread(e.getValue(), e.getKey()); |
| 162 | + } |
| 163 | + |
| 164 | + threads.clear(); |
| 165 | + configs.clear(); |
| 166 | + Log.d(TAG, "NetworkConnectionManager shut down"); |
| 167 | + } |
| 168 | + |
| 169 | + private void startThread(ConnectionConfiguration config) { |
| 170 | + NetworkConnectionThread t = |
| 171 | + new NetworkConnectionThread(context, config, wearable); |
| 172 | + threads.put(config.address, t); |
| 173 | + t.start(); |
| 174 | + Log.d(TAG, "Started NetworkConnectionThread for " + config.address); |
| 175 | + } |
| 176 | + |
| 177 | + private static void joinThread(NetworkConnectionThread t, String address) { |
| 178 | + try { |
| 179 | + t.join(SHUTDOWN_JOIN_TIMEOUT); |
| 180 | + if (t.isAlive()) { |
| 181 | + Log.w(TAG, "Thread for " + address + " did not stop within " |
| 182 | + + SHUTDOWN_JOIN_TIMEOUT + "ms"); |
| 183 | + } |
| 184 | + } catch (InterruptedException e) { |
| 185 | + Thread.currentThread().interrupt(); |
| 186 | + } |
| 187 | + } |
| 188 | + |
| 189 | + private static void validateConfig(ConnectionConfiguration config) { |
| 190 | + if (config == null || config.address == null) { |
| 191 | + throw new IllegalArgumentException("Config or address is null"); |
| 192 | + } |
| 193 | + if (config.type != WearableImpl.TYPE_NETWORK) { |
| 194 | + throw new IllegalArgumentException("Expected TYPE_NETWORK, got type=" + config.type); |
| 195 | + } |
| 196 | + if (config.role != WearableImpl.ROLE_CLIENT) { |
| 197 | + throw new IllegalArgumentException("Expected ROLE_CLIENT, got role=" + config.role); |
| 198 | + } |
| 199 | + } |
| 200 | + |
| 201 | + |
| 202 | +} |
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