1 files changed, 373 insertions, 0 deletions
diff --git a/java/com/android/incallui/spam/SpamCallListListener.java b/java/com/android/incallui/spam/SpamCallListListener.java
new file mode 100644
index 000000000..547337eda
--- /dev/null
+++ b/java/com/android/incallui/spam/SpamCallListListener.java
@@ -0,0 +1,373 @@
+/*
+ * 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.incallui.spam;
+
+import android.app.Notification;
+import android.app.Notification.Builder;
+import android.app.NotificationManager;
+import android.app.PendingIntent;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.drawable.Icon;
+import android.support.annotation.NonNull;
+import android.telecom.DisconnectCause;
+import android.telephony.PhoneNumberUtils;
+import android.text.TextUtils;
+import com.android.contacts.common.compat.PhoneNumberUtilsCompat;
+import com.android.dialer.blocking.FilteredNumberCompat;
+import com.android.dialer.blocking.FilteredNumbersUtil;
+import com.android.dialer.common.LogUtil;
+import com.android.dialer.location.GeoUtil;
+import com.android.dialer.logging.ContactLookupResult;
+import com.android.dialer.logging.DialerImpression;
+import com.android.dialer.logging.Logger;
+import com.android.dialer.notification.NotificationChannelManager;
+import com.android.dialer.notification.NotificationChannelManager.Channel;
+import com.android.dialer.spam.Spam;
+import com.android.incallui.R;
+import com.android.incallui.call.CallList;
+import com.android.incallui.call.DialerCall;
+import com.android.incallui.call.DialerCall.CallHistoryStatus;
+import java.util.Random;
+
+/**
+ * Creates notifications after a call ends if the call matched the criteria (incoming, accepted,
+ * etc).
+ */
+public class SpamCallListListener implements CallList.Listener {
+
+  static final int NOTIFICATION_ID = R.id.notification_spam_call;
+  private static final String TAG = "SpamCallListListener";
+  private final Context context;
+  private final Random random;
+
+  public SpamCallListListener(Context context) {
+    this.context = context;
+    this.random = new Random();
+  }
+
+  public SpamCallListListener(Context context, Random rand) {
+    this.context = context;
+    this.random = rand;
+  }
+
+  private static String pii(String pii) {
+    return com.android.incallui.Log.pii(pii);
+  }
+
+  @Override
+  public void onIncomingCall(final DialerCall call) {
+    String number = call.getNumber();
+    if (TextUtils.isEmpty(number)) {
+      return;
+    }
+    NumberInCallHistoryTask.Listener listener =
+        new NumberInCallHistoryTask.Listener() {
+          @Override
+          public void onComplete(@CallHistoryStatus int callHistoryStatus) {
+            call.setCallHistoryStatus(callHistoryStatus);
+          }
+        };
+    new NumberInCallHistoryTask(context, listener, number, GeoUtil.getCurrentCountryIso(context))
+        .submitTask();
+  }
+
+  @Override
+  public void onUpgradeToVideo(DialerCall call) {}
+
+  @Override
+  public void onSessionModificationStateChange(DialerCall call) {}
+
+  @Override
+  public void onCallListChange(CallList callList) {}
+
+  @Override
+  public void onWiFiToLteHandover(DialerCall call) {}
+
+  @Override
+  public void onHandoverToWifiFailed(DialerCall call) {}
+
+  @Override
+  public void onInternationalCallOnWifi(@NonNull DialerCall call) {}
+
+  @Override
+  public void onDisconnect(DialerCall call) {
+    if (!shouldShowAfterCallNotification(call)) {
+      return;
+    }
+    String e164Number =
+        PhoneNumberUtils.formatNumberToE164(
+            call.getNumber(), GeoUtil.getCurrentCountryIso(context));
+    if (!FilteredNumbersUtil.canBlockNumber(context, e164Number, call.getNumber())
+        || !FilteredNumberCompat.canAttemptBlockOperations(context)) {
+      return;
+    }
+    if (e164Number == null) {
+      return;
+    }
+    showNotification(call);
+  }
+
+  /** Posts the intent for displaying the after call spam notification to the user. */
+  private void showNotification(DialerCall call) {
+    if (call.isSpam()) {
+      maybeShowSpamCallNotification(call);
+    } else {
+      LogUtil.d(TAG, "Showing not spam notification for number=" + pii(call.getNumber()));
+      maybeShowNonSpamCallNotification(call);
+    }
+  }
+
+  /** Determines if the after call notification should be shown for the specified call. */
+  private boolean shouldShowAfterCallNotification(DialerCall call) {
+    if (!Spam.get(context).isSpamNotificationEnabled()) {
+      return false;
+    }
+
+    String number = call.getNumber();
+    if (TextUtils.isEmpty(number)) {
+      return false;
+    }
+
+    DialerCall.LogState logState = call.getLogState();
+    if (!logState.isIncoming) {
+      return false;
+    }
+
+    if (logState.duration <= 0) {
+      return false;
+    }
+
+    if (logState.contactLookupResult != ContactLookupResult.Type.NOT_FOUND
+        && logState.contactLookupResult != ContactLookupResult.Type.UNKNOWN_LOOKUP_RESULT_TYPE) {
+      return false;
+    }
+
+    int callHistoryStatus = call.getCallHistoryStatus();
+    if (callHistoryStatus == DialerCall.CALL_HISTORY_STATUS_PRESENT) {
+      return false;
+    } else if (callHistoryStatus == DialerCall.CALL_HISTORY_STATUS_UNKNOWN) {
+      LogUtil.i(TAG, "DialerCall history status is unknown, returning false");
+      return false;
+    }
+
+    // Check if call disconnected because of either user hanging up
+    int disconnectCause = call.getDisconnectCause().getCode();
+    if (disconnectCause != DisconnectCause.LOCAL && disconnectCause != DisconnectCause.REMOTE) {
+      return false;
+    }
+
+    LogUtil.i(TAG, "shouldShowAfterCallNotification, returning true");
+    return true;
+  }
+
+  /**
+   * Creates a notification builder with properties common among the two after call notifications.
+   */
+  private Notification.Builder createAfterCallNotificationBuilder(DialerCall call) {
+    Builder builder =
+        new Builder(context)
+            .setContentIntent(
+                createActivityPendingIntent(call, SpamNotificationActivity.ACTION_SHOW_DIALOG))
+            .setCategory(Notification.CATEGORY_STATUS)
+            .setPriority(Notification.PRIORITY_DEFAULT)
+            .setColor(context.getColor(R.color.dialer_theme_color))
+            .setSmallIcon(R.drawable.ic_call_end_white_24dp);
+    NotificationChannelManager.applyChannel(builder, context, Channel.DEFAULT, null);
+    return builder;
+  }
+
+  private CharSequence getDisplayNumber(DialerCall call) {
+    String formattedNumber =
+        PhoneNumberUtils.formatNumber(call.getNumber(), GeoUtil.getCurrentCountryIso(context));
+    return PhoneNumberUtilsCompat.createTtsSpannable(formattedNumber);
+  }
+
+  /** Display a notification with two actions: "add contact" and "report spam". */
+  private void showNonSpamCallNotification(DialerCall call) {
+    Notification.Builder notificationBuilder =
+        createAfterCallNotificationBuilder(call)
+            .setLargeIcon(Icon.createWithResource(context, R.drawable.unknown_notification_icon))
+            .setContentText(
+                context.getString(R.string.spam_notification_non_spam_call_collapsed_text))
+            .setStyle(
+                new Notification.BigTextStyle()
+                    .bigText(
+                        context.getString(R.string.spam_notification_non_spam_call_expanded_text)))
+            // Add contact
+            .addAction(
+                new Notification.Action.Builder(
+                        R.drawable.ic_person_add_grey600_24dp,
+                        context.getString(R.string.spam_notification_add_contact_action_text),
+                        createActivityPendingIntent(
+                            call, SpamNotificationActivity.ACTION_ADD_TO_CONTACTS))
+                    .build())
+            // Block/report spam
+            .addAction(
+                new Notification.Action.Builder(
+                        R.drawable.ic_block_grey600_24dp,
+                        context.getString(R.string.spam_notification_report_spam_action_text),
+                        createBlockReportSpamPendingIntent(call))
+                    .build())
+            .setContentTitle(
+                context.getString(R.string.non_spam_notification_title, getDisplayNumber(call)));
+    ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE))
+        .notify(call.getNumber(), NOTIFICATION_ID, notificationBuilder.build());
+  }
+
+  private boolean shouldThrottleSpamNotification() {
+    int randomNumber = random.nextInt(100);
+    int thresholdForShowing = Spam.get(context).percentOfSpamNotificationsToShow();
+    if (thresholdForShowing == 0) {
+      LogUtil.d(
+          TAG,
+          "shouldThrottleSpamNotification, not showing - percentOfSpamNotificationsToShow is 0");
+      return true;
+    } else if (randomNumber < thresholdForShowing) {
+      LogUtil.d(
+          TAG,
+          "shouldThrottleSpamNotification, showing " + randomNumber + " < " + thresholdForShowing);
+      return false;
+    } else {
+      LogUtil.d(
+          TAG,
+          "shouldThrottleSpamNotification, not showing "
+              + randomNumber
+              + " >= "
+              + thresholdForShowing);
+      return true;
+    }
+  }
+
+  private boolean shouldThrottleNonSpamNotification() {
+    int randomNumber = random.nextInt(100);
+    int thresholdForShowing = Spam.get(context).percentOfNonSpamNotificationsToShow();
+    if (thresholdForShowing == 0) {
+      LogUtil.d(TAG, "Not showing non spam notification: percentOfNonSpamNotificationsToShow is 0");
+      return true;
+    } else if (randomNumber < thresholdForShowing) {
+      LogUtil.d(
+          TAG, "Showing non spam notification: " + randomNumber + " < " + thresholdForShowing);
+      return false;
+    } else {
+      LogUtil.d(
+          TAG, "Not showing non spam notification:" + randomNumber + " >= " + thresholdForShowing);
+      return true;
+    }
+  }
+
+  private void maybeShowSpamCallNotification(DialerCall call) {
+    if (shouldThrottleSpamNotification()) {
+      Logger.get(context)
+          .logCallImpression(
+              DialerImpression.Type.SPAM_NOTIFICATION_NOT_SHOWN_AFTER_THROTTLE,
+              call.getUniqueCallId(),
+              call.getTimeAddedMs());
+    } else {
+      Logger.get(context)
+          .logCallImpression(
+              DialerImpression.Type.SPAM_NOTIFICATION_SHOWN_AFTER_THROTTLE,
+              call.getUniqueCallId(),
+              call.getTimeAddedMs());
+      showSpamCallNotification(call);
+    }
+  }
+
+  private void maybeShowNonSpamCallNotification(DialerCall call) {
+    if (shouldThrottleNonSpamNotification()) {
+      Logger.get(context)
+          .logCallImpression(
+              DialerImpression.Type.NON_SPAM_NOTIFICATION_NOT_SHOWN_AFTER_THROTTLE,
+              call.getUniqueCallId(),
+              call.getTimeAddedMs());
+    } else {
+      Logger.get(context)
+          .logCallImpression(
+              DialerImpression.Type.NON_SPAM_NOTIFICATION_SHOWN_AFTER_THROTTLE,
+              call.getUniqueCallId(),
+              call.getTimeAddedMs());
+      showNonSpamCallNotification(call);
+    }
+  }
+
+  /** Display a notification with the action "not spam". */
+  private void showSpamCallNotification(DialerCall call) {
+    Notification.Builder notificationBuilder =
+        createAfterCallNotificationBuilder(call)
+            .setLargeIcon(Icon.createWithResource(context, R.drawable.spam_notification_icon))
+            .setContentText(context.getString(R.string.spam_notification_spam_call_collapsed_text))
+            .setStyle(
+                new Notification.BigTextStyle()
+                    .bigText(context.getString(R.string.spam_notification_spam_call_expanded_text)))
+            // Not spam
+            .addAction(
+                new Notification.Action.Builder(
+                        R.drawable.ic_close_grey600_24dp,
+                        context.getString(R.string.spam_notification_not_spam_action_text),
+                        createNotSpamPendingIntent(call))
+                    .build())
+            // Block/report spam
+            .addAction(
+                new Notification.Action.Builder(
+                        R.drawable.ic_block_grey600_24dp,
+                        context.getString(R.string.spam_notification_block_spam_action_text),
+                        createBlockReportSpamPendingIntent(call))
+                    .build())
+            .setContentTitle(
+                context.getString(R.string.spam_notification_title, getDisplayNumber(call)));
+    ((NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE))
+        .notify(call.getNumber(), NOTIFICATION_ID, notificationBuilder.build());
+  }
+
+  /**
+   * Creates a pending intent for block/report spam action. If enabled, this intent is forwarded to
+   * the {@link SpamNotificationActivity}, otherwise to the {@link SpamNotificationService}.
+   */
+  private PendingIntent createBlockReportSpamPendingIntent(DialerCall call) {
+    String action = SpamNotificationActivity.ACTION_MARK_NUMBER_AS_SPAM;
+    return Spam.get(context).isDialogEnabledForSpamNotification()
+        ? createActivityPendingIntent(call, action)
+        : createServicePendingIntent(call, action);
+  }
+
+  /**
+   * Creates a pending intent for not spam action. If enabled, this intent is forwarded to the
+   * {@link SpamNotificationActivity}, otherwise to the {@link SpamNotificationService}.
+   */
+  private PendingIntent createNotSpamPendingIntent(DialerCall call) {
+    String action = SpamNotificationActivity.ACTION_MARK_NUMBER_AS_NOT_SPAM;
+    return Spam.get(context).isDialogEnabledForSpamNotification()
+        ? createActivityPendingIntent(call, action)
+        : createServicePendingIntent(call, action);
+  }
+
+  /** Creates a pending intent for {@link SpamNotificationService}. */
+  private PendingIntent createServicePendingIntent(DialerCall call, String action) {
+    Intent intent =
+        SpamNotificationService.createServiceIntent(context, call, action, NOTIFICATION_ID);
+    return PendingIntent.getService(
+        context, (int) System.currentTimeMillis(), intent, PendingIntent.FLAG_ONE_SHOT);
+  }
+
+  /** Creates a pending intent for {@link SpamNotificationActivity}. */
+  private PendingIntent createActivityPendingIntent(DialerCall call, String action) {
+    Intent intent =
+        SpamNotificationActivity.createActivityIntent(context, call, action, NOTIFICATION_ID);
+    return PendingIntent.getActivity(
+        context, (int) System.currentTimeMillis(), intent, PendingIntent.FLAG_ONE_SHOT);
+  }
+}