Support for website distribution build with auto-updating APK

// FREEBIE

src/org/thoughtcrime/securesms/service/UpdateApkReadyListener.java

@@ -0,0 +1,117 @@
+package org.thoughtcrime.securesms.service;
+
+
+import android.app.DownloadManager;
+import android.app.Notification;
+import android.app.PendingIntent;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.database.Cursor;
+import android.net.Uri;
+import android.support.annotation.Nullable;
+import android.support.v4.app.NotificationCompat;
+import android.util.Log;
+
+import org.thoughtcrime.securesms.R;
+import org.thoughtcrime.securesms.util.FileUtils;
+import org.thoughtcrime.securesms.util.Hex;
+import org.thoughtcrime.securesms.util.ServiceUtil;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.security.MessageDigest;
+
+public class UpdateApkReadyListener extends BroadcastReceiver {
+
+  private static final String TAG = UpdateApkReadyListener.class.getSimpleName();
+
+  @Override
+  public void onReceive(Context context, Intent intent) {
+    Log.w(TAG, "onReceive()");
+
+    if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(intent.getAction())) {
+      long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -2);
+
+      if (downloadId == TextSecurePreferences.getUpdateApkDownloadId(context)) {
+        Uri    uri           = getLocalUriForDownloadId(context, downloadId);
+        String encodedDigest = TextSecurePreferences.getUpdateApkDigest(context);
+
+        if (uri == null) {
+          Log.w(TAG, "Downloaded local URI is null?");
+          return;
+        }
+
+        if (isMatchingDigest(context, downloadId, encodedDigest)) {
+          displayInstallNotification(context, uri);
+        } else {
+          Log.w(TAG, "Downloaded APK doesn't match digest...");
+        }
+      }
+    }
+  }
+
+  private void displayInstallNotification(Context context, Uri uri) {
+    Intent intent = new Intent(Intent.ACTION_VIEW);
+    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+    intent.setDataAndType(uri, "application/vnd.android.package-archive");
+
+    PendingIntent pendingIntent = PendingIntent.getActivity(context, 0, intent, 0);
+
+    Notification notification = new NotificationCompat.Builder(context)
+        .setOngoing(true)
+        .setContentTitle(context.getString(R.string.UpdateApkReadyListener_Signal_update))
+        .setContentText(context.getString(R.string.UpdateApkReadyListener_a_new_version_of_signal_is_available_tap_to_update))
+        .setSmallIcon(R.drawable.icon_notification)
+        .setColor(context.getResources().getColor(R.color.textsecure_primary))
+        .setPriority(NotificationCompat.PRIORITY_HIGH)
+        .setCategory(NotificationCompat.CATEGORY_REMINDER)
+        .setContentIntent(pendingIntent)
+        .build();
+
+    ServiceUtil.getNotificationManager(context).notify(666, notification);
+  }
+
+  private @Nullable Uri getLocalUriForDownloadId(Context context, long downloadId) {
+    DownloadManager       downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
+    DownloadManager.Query query           = new DownloadManager.Query();
+    query.setFilterById(downloadId);
+
+    Cursor cursor = downloadManager.query(query);
+
+    try {
+      if (cursor != null && cursor.moveToFirst()) {
+        String localUri  = cursor.getString(cursor.getColumnIndexOrThrow(DownloadManager.COLUMN_LOCAL_URI));
+
+        if (localUri != null) {
+          File   localFile = new File(Uri.parse(localUri).getPath());
+          return Uri.fromFile(localFile);
+        }
+      }
+    } finally {
+      if (cursor != null) cursor.close();
+    }
+
+    return null;
+  }
+
+  private boolean isMatchingDigest(Context context, long downloadId, String theirEncodedDigest) {
+    try {
+      if (theirEncodedDigest == null) return false;
+
+      byte[]          theirDigest     = Hex.fromStringCondensed(theirEncodedDigest);
+      DownloadManager downloadManager = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
+      FileInputStream fin             = new FileInputStream(downloadManager.openDownloadedFile(downloadId).getFileDescriptor());
+      byte[]          ourDigest       = FileUtils.getFileDigest(fin);
+
+      fin.close();
+
+      return MessageDigest.isEqual(ourDigest, theirDigest);
+    } catch (IOException e) {
+      Log.w(TAG, e);
+      return false;
+    }
+  }
+}

src/org/thoughtcrime/securesms/service/UpdateApkRefreshListener.java

@@ -0,0 +1,47 @@
+package org.thoughtcrime.securesms.service;
+
+
+import android.content.Context;
+import android.content.Intent;
+import android.util.Log;
+
+import org.thoughtcrime.securesms.ApplicationContext;
+import org.thoughtcrime.securesms.BuildConfig;
+import org.thoughtcrime.securesms.jobs.UpdateApkJob;
+import org.thoughtcrime.securesms.util.TextSecurePreferences;
+
+import java.util.concurrent.TimeUnit;
+
+public class UpdateApkRefreshListener extends PersistentAlarmManagerListener {
+
+  private static final String TAG = UpdateApkRefreshListener.class.getSimpleName();
+
+  private static final long INTERVAL = TimeUnit.HOURS.toMillis(6);
+
+  @Override
+  protected long getNextScheduledExecutionTime(Context context) {
+    return TextSecurePreferences.getUpdateApkRefreshTime(context);
+  }
+
+  @Override
+  protected long onAlarm(Context context, long scheduledTime) {
+    Log.w(TAG, "onAlarm...");
+
+    if (scheduledTime != 0 && BuildConfig.PLAY_STORE_DISABLED) {
+      Log.w(TAG, "Queueing APK update job...");
+      ApplicationContext.getInstance(context)
+                        .getJobManager()
+                        .add(new UpdateApkJob(context));
+    }
+
+    long newTime = System.currentTimeMillis() + INTERVAL;
+    TextSecurePreferences.setUpdateApkRefreshTime(context, newTime);
+
+    return newTime;
+  }
+
+  public static void schedule(Context context) {
+    new UpdateApkRefreshListener().onReceive(context, new Intent());
+  }
+
+}