java/com/android/incallui/CallerInfoAsyncQuery.java - LeafOS-Project/android_packages_apps_Dialer - Gitiles

 /*
  * Copyright (C) 2006 The Android Open Source Project
  * Copyright (C) 2023 The LineageOS 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;

 import android.Manifest;
 import android.content.AsyncQueryHandler;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.database.Cursor;
 import android.database.SQLException;
 import android.net.Uri;
 import android.os.Handler;
 import android.os.Looper;
 import android.os.Message;
 import android.os.Trace;
 import android.provider.ContactsContract;
 import android.provider.ContactsContract.Directory;
 import android.text.TextUtils;

 import androidx.annotation.MainThread;
 import androidx.annotation.RequiresPermission;
 import androidx.annotation.WorkerThread;

 import com.android.dialer.R;
 import com.android.dialer.phonenumbercache.CachedNumberLookupService;
 import com.android.dialer.phonenumbercache.CachedNumberLookupService.CachedContactInfo;
 import com.android.dialer.phonenumbercache.ContactInfoHelper;
 import com.android.dialer.phonenumbercache.PhoneNumberCache;
 import com.android.dialer.phonenumberutil.PhoneNumberHelper;

 import java.io.IOException;
 import java.io.InputStream;
 import java.util.ArrayList;
 import java.util.Arrays;

 /**
  * Helper class to make it easier to run asynchronous caller-id lookup queries.
  *
  * @see CallerInfo
  */
 public class CallerInfoAsyncQuery {

   /** Interface for a CallerInfoAsyncQueryHandler result return. */
   interface OnQueryCompleteListener {

     /** Called when the query is complete. */
     @MainThread
     void onQueryComplete(int token, Object cookie, CallerInfo ci);

     /** Called when data is loaded. Must be called in worker thread. */
     @WorkerThread
     void onDataLoaded(int token, Object cookie, CallerInfo ci);
   }

   private static final boolean DBG = false;
   private static final String LOG_TAG = "CallerInfoAsyncQuery";

   private static final int EVENT_NEW_QUERY = 1;
   private static final int EVENT_ADD_LISTENER = 2;
   private static final int EVENT_EMERGENCY_NUMBER = 3;
   private static final int EVENT_VOICEMAIL_NUMBER = 4;
   // If the CallerInfo query finds no contacts, should we use the
   // PhoneNumberOfflineGeocoder to look up a "geo description"?
   // (TODO: This could become a flag in config.xml if it ever needs to be
   // configured on a per-product basis.)
   private static final boolean ENABLE_UNKNOWN_NUMBER_GEO_DESCRIPTION = true;
   /* Directory lookup related code - START */
   private static final String[] DIRECTORY_PROJECTION = new String[] {Directory._ID};

   /** Private constructor for factory methods. */
   private CallerInfoAsyncQuery() {}

   @RequiresPermission(Manifest.permission.READ_CONTACTS)
   static void startQuery(
       final int token,
       final Context context,
       final CallerInfo info,
       final OnQueryCompleteListener listener,
       final Object cookie) {
     Log.d(LOG_TAG, "##### CallerInfoAsyncQuery startContactProviderQuery()... #####");
     Log.d(LOG_TAG, "- number: " + info.phoneNumber);
     Log.d(LOG_TAG, "- cookie: " + cookie);

     OnQueryCompleteListener contactsProviderQueryCompleteListener =
         new OnQueryCompleteListener() {
           @Override
           public void onQueryComplete(int token, Object cookie, CallerInfo ci) {
             Log.d(LOG_TAG, "contactsProviderQueryCompleteListener onQueryComplete");
             // If there are no other directory queries, make sure that the listener is
             // notified of this result.  see a bug
             if ((ci != null && ci.contactExists)
                 || !startOtherDirectoriesQuery(token, context, info, listener, cookie)) {
               if (listener != null && ci != null) {
                 listener.onQueryComplete(token, cookie, ci);
               }
             }
           }

           @Override
           public void onDataLoaded(int token, Object cookie, CallerInfo ci) {
             Log.d(LOG_TAG, "contactsProviderQueryCompleteListener onDataLoaded");
             listener.onDataLoaded(token, cookie, ci);
           }
         };
     startDefaultDirectoryQuery(token, context, info, contactsProviderQueryCompleteListener, cookie);
   }

   // Private methods
   private static void startDefaultDirectoryQuery(
       int token,
       Context context,
       CallerInfo info,
       OnQueryCompleteListener listener,
       Object cookie) {
     // Construct the URI object and query params, and start the query.
     Uri uri = ContactInfoHelper.getContactInfoLookupUri(info.phoneNumber);
     startQueryInternal(token, context, info, listener, cookie, uri);
   }

   /**
    * Factory method to start the query based on a CallerInfo object.
    *
    * <p>Note: if the number contains an "@" character we treat it as a SIP address, and look it up
    * directly in the Data table rather than using the PhoneLookup table. TODO: But eventually we
    * should expose two separate methods, one for numbers and one for SIP addresses, and then have
    * PhoneUtils.startGetCallerInfo() decide which one to call based on the phone type of the
    * incoming connection.
    */
   private static void startQueryInternal(
       int token,
       Context context,
       CallerInfo info,
       OnQueryCompleteListener listener,
       Object cookie,
       Uri contactRef) {
     if (DBG) {
       Log.d(LOG_TAG, "==> contactRef: " + sanitizeUriToString(contactRef));
     }

     if ((context == null) || (contactRef == null)) {
       throw new QueryPoolException("Bad context or query uri.");
     }
     CallerInfoAsyncQueryHandler handler = new CallerInfoAsyncQueryHandler(context, contactRef);

     //create cookieWrapper, start query
     CookieWrapper cw = new CookieWrapper();
     cw.listener = listener;
     cw.cookie = cookie;
     cw.number = info.phoneNumber;
     cw.countryIso = info.countryIso;

     // check to see if these are recognized numbers, and use shortcuts if we can.
     if (PhoneNumberHelper.isEmergencyNumber(context, info.phoneNumber)) {
       cw.event = EVENT_EMERGENCY_NUMBER;
     } else if (info.isVoiceMailNumber()) {
       cw.event = EVENT_VOICEMAIL_NUMBER;
     } else {
       cw.event = EVENT_NEW_QUERY;
     }

     String[] proejection = CallerInfo.getDefaultPhoneLookupProjection();
     handler.startQuery(
         token,
         cw, // cookie
         contactRef, // uri
         proejection, // projection
         null, // selection
         null, // selectionArgs
         null); // orderBy
   }

   // Return value indicates if listener was notified.
   private static boolean startOtherDirectoriesQuery(
       int token,
       Context context,
       CallerInfo info,
       OnQueryCompleteListener listener,
       Object cookie) {
     Trace.beginSection("CallerInfoAsyncQuery.startOtherDirectoriesQuery");
     long[] directoryIds = getDirectoryIds(context);
     int size = directoryIds.length;
     if (size == 0) {
       Trace.endSection();
       return false;
     }

     DirectoryQueryCompleteListenerFactory listenerFactory =
         new DirectoryQueryCompleteListenerFactory(context, size, listener);

     // The current implementation of multiple async query runs in single handler thread
     // in AsyncQueryHandler.
     // intermediateListener.onQueryComplete is also called from the same caller thread.
     // TODO(a bug): use thread pool instead of single thread.
     for (int i = 0; i < size; i++) {
       long directoryId = directoryIds[i];
       Uri uri = ContactInfoHelper.getContactInfoLookupUri(info.phoneNumber, directoryId);
       if (DBG) {
         Log.d(LOG_TAG, "directoryId: " + directoryId + " uri: " + uri);
       }
       OnQueryCompleteListener intermediateListener = listenerFactory.newListener(directoryId);
       startQueryInternal(token, context, info, intermediateListener, cookie, uri);
     }
     Trace.endSection();
     return true;
   }

   private static long[] getDirectoryIds(Context context) {
     ArrayList<Long> results = new ArrayList<>();

     Uri uri = Uri.withAppendedPath(ContactsContract.AUTHORITY_URI, "directories_enterprise");

     ContentResolver cr = context.getContentResolver();
     Cursor cursor = cr.query(uri, DIRECTORY_PROJECTION, null, null, null);
     addDirectoryIdsFromCursor(cursor, results);

     long[] result = new long[results.size()];
     for (int i = 0; i < results.size(); i++) {
       result[i] = results.get(i);
     }
     return result;
   }

   private static void addDirectoryIdsFromCursor(Cursor cursor, ArrayList<Long> results) {
     if (cursor != null) {
       int idIndex = cursor.getColumnIndex(Directory._ID);
       while (cursor.moveToNext()) {
         long id = cursor.getLong(idIndex);
         if (Directory.isRemoteDirectoryId(id)) {
           results.add(id);
         }
       }
       cursor.close();
     }
   }

   private static String sanitizeUriToString(Uri uri) {
     if (uri != null) {
       String uriString = uri.toString();
       int indexOfLastSlash = uriString.lastIndexOf('/');
       if (indexOfLastSlash > 0) {
         return uriString.substring(0, indexOfLastSlash) + "/xxxxxxx";
       } else {
         return uriString;
       }
     } else {
       return "";
     }
   }

   /** Wrap the cookie from the WorkerArgs with additional information needed by our classes. */
   private static final class CookieWrapper {

     public OnQueryCompleteListener listener;
     public Object cookie;
     public int event;
     public String number;
     public String countryIso;
   }
   /* Directory lookup related code - END */

   /** Simple exception used to communicate problems with the query pool. */
   private static class QueryPoolException extends SQLException {

     QueryPoolException(String error) {
       super(error);
     }
   }

   private static final class DirectoryQueryCompleteListenerFactory {

     private final OnQueryCompleteListener listener;
     private final Context context;
     // Make sure listener to be called once and only once
     private int count;
     private boolean isListenerCalled;

     DirectoryQueryCompleteListenerFactory(
         Context context, int size, OnQueryCompleteListener listener) {
       count = size;
       this.listener = listener;
       isListenerCalled = false;
       this.context = context;
     }

     private void onDirectoryQueryComplete(
         int token, Object cookie, CallerInfo ci, long directoryId) {
       boolean shouldCallListener = false;
       synchronized (this) {
         count = count - 1;
         if (!isListenerCalled && (ci.contactExists || count == 0)) {
           isListenerCalled = true;
           shouldCallListener = true;
         }
       }

       // Don't call callback in synchronized block because mListener.onQueryComplete may
       // take long time to complete
       if (shouldCallListener && listener != null) {
         addCallerInfoIntoCache(ci, directoryId);
         listener.onQueryComplete(token, cookie, ci);
       }
     }

     private void addCallerInfoIntoCache(CallerInfo ci, long directoryId) {
       CachedNumberLookupService cachedNumberLookupService =
           PhoneNumberCache.get(context).getCachedNumberLookupService();
       if (ci.contactExists && cachedNumberLookupService != null) {
         // 1. Cache caller info
         CachedContactInfo cachedContactInfo =
             CallerInfoUtils.buildCachedContactInfo(cachedNumberLookupService, ci);
         String directoryLabel = context.getString(R.string.directory_search_label);
         cachedContactInfo.setDirectorySource(directoryLabel, directoryId);
         cachedNumberLookupService.addContact(context, cachedContactInfo);

         // 2. Cache photo
         if (ci.contactDisplayPhotoUri != null && ci.normalizedNumber != null) {
           try (InputStream in =
               context.getContentResolver().openInputStream(ci.contactDisplayPhotoUri)) {
             if (in != null) {
               cachedNumberLookupService.addPhoto(context, ci.normalizedNumber, in);
             }
           } catch (IOException e) {
             Log.e(LOG_TAG, "failed to fetch directory contact photo", e);
           }
         }
       }
     }

     OnQueryCompleteListener newListener(long directoryId) {
       return new DirectoryQueryCompleteListener(directoryId);
     }

     private class DirectoryQueryCompleteListener implements OnQueryCompleteListener {

       private final long directoryId;

       DirectoryQueryCompleteListener(long directoryId) {
         this.directoryId = directoryId;
       }

       @Override
       public void onDataLoaded(int token, Object cookie, CallerInfo ci) {
         Log.d(LOG_TAG, "DirectoryQueryCompleteListener.onDataLoaded");
         listener.onDataLoaded(token, cookie, ci);
       }

       @Override
       public void onQueryComplete(int token, Object cookie, CallerInfo ci) {
         Log.d(LOG_TAG, "DirectoryQueryCompleteListener.onQueryComplete");
         onDirectoryQueryComplete(token, cookie, ci, directoryId);
       }
     }
   }

   /** Our own implementation of the AsyncQueryHandler. */
   private static class CallerInfoAsyncQueryHandler extends AsyncQueryHandler {

     /**
      * The information relevant to each CallerInfo query. Each query may have multiple listeners, so
      * each AsyncCursorInfo is associated with 2 or more CookieWrapper objects in the queue (one
      * with a new query event, and one with a end event, with 0 or more additional listeners in
      * between).
      */
     private Context queryContext;

     private Uri queryUri;
     private CallerInfo callerInfo;

     /** Asynchronous query handler class for the contact / callerinfo object. */
     private CallerInfoAsyncQueryHandler(Context context, Uri contactRef) {
       super(context.getContentResolver());
       this.queryContext = context;
       this.queryUri = contactRef;
     }

     @Override
     public void startQuery(
         int token,
         Object cookie,
         Uri uri,
         String[] projection,
         String selection,
         String[] selectionArgs,
         String orderBy) {
       if (DBG) {
         // Show stack trace with the arguments.
         Log.d(
             LOG_TAG,
             "InCall: startQuery: url="
                 + uri
                 + " projection=["
                 + Arrays.toString(projection)
                 + "]"
                 + " selection="
                 + selection
                 + " "
                 + " args=["
                 + Arrays.toString(selectionArgs)
                 + "]",
             new RuntimeException("STACKTRACE"));
       }
       super.startQuery(token, cookie, uri, projection, selection, selectionArgs, orderBy);
     }

     @Override
     protected Handler createHandler(Looper looper) {
       return new CallerInfoWorkerHandler(looper);
     }

     /**
      * Overrides onQueryComplete from AsyncQueryHandler.
      *
      * <p>This method takes into account the state of this class; we construct the CallerInfo object
      * only once for each set of listeners. When the query thread has done its work and calls this
      * method, we inform the remaining listeners in the queue, until we're out of listeners. Once we
      * get the message indicating that we should expect no new listeners for this CallerInfo object,
      * we release the AsyncCursorInfo back into the pool.
      */
     @Override
     protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
       Log.d(this, "##### onQueryComplete() #####   query complete for token: " + token);

       CookieWrapper cw = (CookieWrapper) cookie;

       if (cw.listener != null) {
         Log.d(
             this,
             "notifying listener: "
                 + cw.listener.getClass()
                 + " for token: "
                 + token
                 + callerInfo);
         cw.listener.onQueryComplete(token, cw.cookie, callerInfo);
       }
       queryContext = null;
       queryUri = null;
       callerInfo = null;
     }

     void updateData(int token, Object cookie, Cursor cursor) {
       try {
         Log.d(this, "##### updateData() #####  for token: " + token);

         //get the cookie and notify the listener.
         CookieWrapper cw = (CookieWrapper) cookie;
         if (cw == null) {
           // Normally, this should never be the case for calls originating
           // from within this code.
           // However, if there is any code that calls this method, we should
           // check the parameters to make sure they're viable.
           Log.d(this, "Cookie is null, ignoring onQueryComplete() request.");
           return;
         }

         // check the token and if needed, create the callerinfo object.
         if (callerInfo == null) {
           if ((queryContext == null) || (queryUri == null)) {
             throw new QueryPoolException(
                 "Bad context or query uri, or CallerInfoAsyncQuery already released.");
           }

           // adjust the callerInfo data as needed, and only if it was set from the
           // initial query request.
           // Change the callerInfo number ONLY if it is an emergency number or the
           // voicemail number, and adjust other data (including photoResource)
           // accordingly.
           if (cw.event == EVENT_EMERGENCY_NUMBER) {
             // Note we're setting the phone number here (refer to javadoc
             // comments at the top of CallerInfo class).
             callerInfo = new CallerInfo().markAsEmergency(queryContext);
           } else if (cw.event == EVENT_VOICEMAIL_NUMBER) {
             callerInfo = new CallerInfo().markAsVoiceMail(queryContext);
           } else {
             callerInfo = CallerInfo.getCallerInfo(queryContext, queryUri, cursor);
             Log.d(this, "==> Got mCallerInfo: " + callerInfo);

             CallerInfo newCallerInfo =
                 CallerInfo.doSecondaryLookupIfNecessary(queryContext, cw.number, callerInfo);
             if (newCallerInfo != callerInfo) {
               callerInfo = newCallerInfo;
               Log.d(this, "#####async contact look up with numeric username" + callerInfo);
             }
             callerInfo.countryIso = cw.countryIso;

             // Final step: look up the geocoded description.
             if (ENABLE_UNKNOWN_NUMBER_GEO_DESCRIPTION) {
               // Note we do this only if we *don't* have a valid name (i.e. if
               // no contacts matched the phone number of the incoming call),
               // since that's the only case where the incoming-call UI cares
               // about this field.
               //
               // (TODO: But if we ever want the UI to show the geoDescription
               // even when we *do* match a contact, we'll need to either call
               // updateGeoDescription() unconditionally here, or possibly add a
               // new parameter to CallerInfoAsyncQuery.startQuery() to force
               // the geoDescription field to be populated.)

               if (TextUtils.isEmpty(callerInfo.name)) {
                 // Actually when no contacts match the incoming phone number,
                 // the CallerInfo object is totally blank here (i.e. no name
                 // *or* phoneNumber).  So we need to pass in cw.number as
                 // a fallback number.
                 callerInfo.updateGeoDescription(queryContext, cw.number);
               }
             }

             // Use the number entered by the user for display.
             if (!TextUtils.isEmpty(cw.number)) {
               callerInfo.phoneNumber = cw.number;
             }
           }

           Log.d(this, "constructing CallerInfo object for token: " + token);

           if (cw.listener != null) {
             cw.listener.onDataLoaded(token, cw.cookie, callerInfo);
           }
         }

       } finally {
         // The cursor may have been closed in CallerInfo.getCallerInfo()
         if (cursor != null && !cursor.isClosed()) {
           cursor.close();
         }
       }
     }

     /**
      * Our own query worker thread.
      *
      * <p>This thread handles the messages enqueued in the looper. The normal sequence of events is
      * that a new query shows up in the looper queue, followed by 0 or more add listener requests,
      * and then an end request. Of course, these requests can be interlaced with requests from other
      * tokens, but is irrelevant to this handler since the handler has no state.
      *
      * <p>Note that we depend on the queue to keep things in order; in other words, the looper queue
      * must be FIFO with respect to input from the synchronous startQuery calls and output to this
      * handleMessage call.
      *
      * <p>This use of the queue is required because CallerInfo objects may be accessed multiple
      * times before the query is complete. All accesses (listeners) must be queued up and informed
      * in order when the query is complete.
      */
     class CallerInfoWorkerHandler extends WorkerHandler {

       CallerInfoWorkerHandler(Looper looper) {
         super(looper);
       }

       @Override
       public void handleMessage(Message msg) {
         WorkerArgs args = (WorkerArgs) msg.obj;
         CookieWrapper cw = (CookieWrapper) args.cookie;

         if (cw == null) {
           // Normally, this should never be the case for calls originating
           // from within this code.
           // However, if there is any code that this Handler calls (such as in
           // super.handleMessage) that DOES place unexpected messages on the
           // queue, then we need pass these messages on.
           Log.d(
               this,
               "Unexpected command (CookieWrapper is null): "
                   + msg.what
                   + " ignored by CallerInfoWorkerHandler, passing onto parent.");

           super.handleMessage(msg);
         } else {
           Log.d(
               this,
               "Processing event: "
                   + cw.event
                   + " token (arg1): "
                   + msg.arg1
                   + " command: "
                   + msg.what
                   + " query URI: "
                   + sanitizeUriToString(args.uri));

           switch (cw.event) {
             case EVENT_NEW_QUERY:
               final ContentResolver resolver = queryContext.getContentResolver();

               // This should never happen.
               if (resolver == null) {
                 Log.e(this, "Content Resolver is null!");
                 return;
               }
               // start the sql command.
               Cursor cursor;
               try {
                 cursor =
                     resolver.query(
                         args.uri,
                         args.projection,
                         args.selection,
                         args.selectionArgs,
                         args.orderBy);
                 // Calling getCount() causes the cursor window to be filled,
                 // which will make the first access on the main thread a lot faster.
                 if (cursor != null) {
                   cursor.getCount();
                 }
               } catch (Exception e) {
                 Log.e(this, "Exception thrown during handling EVENT_ARG_QUERY", e);
                 cursor = null;
               }

               args.result = cursor;
               updateData(msg.arg1, cw, cursor);
               break;

               // shortcuts to avoid query for recognized numbers.
             case EVENT_EMERGENCY_NUMBER:
             case EVENT_VOICEMAIL_NUMBER:
             case EVENT_ADD_LISTENER:
               updateData(msg.arg1, cw, (Cursor) args.result);
               break;
             default: // fall out
           }
           Message reply = args.handler.obtainMessage(msg.what);
           reply.obj = args;
           reply.arg1 = msg.arg1;

           reply.sendToTarget();
         }
       }
     }
   }
 }
	/*
	* Copyright (C) 2006 The Android Open Source Project
	* Copyright (C) 2023 The LineageOS 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;

	import android.Manifest;
	import android.content.AsyncQueryHandler;
	import android.content.ContentResolver;
	import android.content.Context;
	import android.database.Cursor;
	import android.database.SQLException;
	import android.net.Uri;
	import android.os.Handler;
	import android.os.Looper;
	import android.os.Message;
	import android.os.Trace;
	import android.provider.ContactsContract;
	import android.provider.ContactsContract.Directory;
	import android.text.TextUtils;

	import androidx.annotation.MainThread;
	import androidx.annotation.RequiresPermission;
	import androidx.annotation.WorkerThread;

	import com.android.dialer.R;
	import com.android.dialer.phonenumbercache.CachedNumberLookupService;
	import com.android.dialer.phonenumbercache.CachedNumberLookupService.CachedContactInfo;
	import com.android.dialer.phonenumbercache.ContactInfoHelper;
	import com.android.dialer.phonenumbercache.PhoneNumberCache;
	import com.android.dialer.phonenumberutil.PhoneNumberHelper;

	import java.io.IOException;
	import java.io.InputStream;
	import java.util.ArrayList;
	import java.util.Arrays;

	/**
	* Helper class to make it easier to run asynchronous caller-id lookup queries.
	*
	* @see CallerInfo
	*/
	public class CallerInfoAsyncQuery {

	/** Interface for a CallerInfoAsyncQueryHandler result return. */
	interface OnQueryCompleteListener {

	/** Called when the query is complete. */
	@MainThread
	void onQueryComplete(int token, Object cookie, CallerInfo ci);

	/** Called when data is loaded. Must be called in worker thread. */
	@WorkerThread
	void onDataLoaded(int token, Object cookie, CallerInfo ci);
	}

	private static final boolean DBG = false;
	private static final String LOG_TAG = "CallerInfoAsyncQuery";

	private static final int EVENT_NEW_QUERY = 1;
	private static final int EVENT_ADD_LISTENER = 2;
	private static final int EVENT_EMERGENCY_NUMBER = 3;
	private static final int EVENT_VOICEMAIL_NUMBER = 4;
	// If the CallerInfo query finds no contacts, should we use the
	// PhoneNumberOfflineGeocoder to look up a "geo description"?
	// (TODO: This could become a flag in config.xml if it ever needs to be
	// configured on a per-product basis.)
	private static final boolean ENABLE_UNKNOWN_NUMBER_GEO_DESCRIPTION = true;
	/* Directory lookup related code - START */
	private static final String[] DIRECTORY_PROJECTION = new String[] {Directory._ID};

	/** Private constructor for factory methods. */
	private CallerInfoAsyncQuery() {}

	@RequiresPermission(Manifest.permission.READ_CONTACTS)
	static void startQuery(
	final int token,
	final Context context,
	final CallerInfo info,
	final OnQueryCompleteListener listener,
	final Object cookie) {
	Log.d(LOG_TAG, "##### CallerInfoAsyncQuery startContactProviderQuery()... #####");
	Log.d(LOG_TAG, "- number: " + info.phoneNumber);
	Log.d(LOG_TAG, "- cookie: " + cookie);

	OnQueryCompleteListener contactsProviderQueryCompleteListener =
	new OnQueryCompleteListener() {
	@Override
	public void onQueryComplete(int token, Object cookie, CallerInfo ci) {
	Log.d(LOG_TAG, "contactsProviderQueryCompleteListener onQueryComplete");
	// If there are no other directory queries, make sure that the listener is
	// notified of this result. see a bug
	if ((ci != null && ci.contactExists)
	\|\| !startOtherDirectoriesQuery(token, context, info, listener, cookie)) {
	if (listener != null && ci != null) {
	listener.onQueryComplete(token, cookie, ci);
	}
	}
	}

	@Override
	public void onDataLoaded(int token, Object cookie, CallerInfo ci) {
	Log.d(LOG_TAG, "contactsProviderQueryCompleteListener onDataLoaded");
	listener.onDataLoaded(token, cookie, ci);
	}
	};
	startDefaultDirectoryQuery(token, context, info, contactsProviderQueryCompleteListener, cookie);
	}

	// Private methods
	private static void startDefaultDirectoryQuery(
	int token,
	Context context,
	CallerInfo info,
	OnQueryCompleteListener listener,
	Object cookie) {
	// Construct the URI object and query params, and start the query.
	Uri uri = ContactInfoHelper.getContactInfoLookupUri(info.phoneNumber);
	startQueryInternal(token, context, info, listener, cookie, uri);
	}

	/**
	* Factory method to start the query based on a CallerInfo object.
	*
	* <p>Note: if the number contains an "@" character we treat it as a SIP address, and look it up
	* directly in the Data table rather than using the PhoneLookup table. TODO: But eventually we
	* should expose two separate methods, one for numbers and one for SIP addresses, and then have
	* PhoneUtils.startGetCallerInfo() decide which one to call based on the phone type of the
	* incoming connection.
	*/
	private static void startQueryInternal(
	int token,
	Context context,
	CallerInfo info,
	OnQueryCompleteListener listener,
	Object cookie,
	Uri contactRef) {
	if (DBG) {
	Log.d(LOG_TAG, "==> contactRef: " + sanitizeUriToString(contactRef));
	}

	if ((context == null) \|\| (contactRef == null)) {
	throw new QueryPoolException("Bad context or query uri.");
	}
	CallerInfoAsyncQueryHandler handler = new CallerInfoAsyncQueryHandler(context, contactRef);

	//create cookieWrapper, start query
	CookieWrapper cw = new CookieWrapper();
	cw.listener = listener;
	cw.cookie = cookie;
	cw.number = info.phoneNumber;
	cw.countryIso = info.countryIso;

	// check to see if these are recognized numbers, and use shortcuts if we can.
	if (PhoneNumberHelper.isEmergencyNumber(context, info.phoneNumber)) {
	cw.event = EVENT_EMERGENCY_NUMBER;
	} else if (info.isVoiceMailNumber()) {
	cw.event = EVENT_VOICEMAIL_NUMBER;
	} else {
	cw.event = EVENT_NEW_QUERY;
	}

	String[] proejection = CallerInfo.getDefaultPhoneLookupProjection();
	handler.startQuery(
	token,
	cw, // cookie
	contactRef, // uri
	proejection, // projection
	null, // selection
	null, // selectionArgs
	null); // orderBy
	}

	// Return value indicates if listener was notified.
	private static boolean startOtherDirectoriesQuery(
	int token,
	Context context,
	CallerInfo info,
	OnQueryCompleteListener listener,
	Object cookie) {
	Trace.beginSection("CallerInfoAsyncQuery.startOtherDirectoriesQuery");
	long[] directoryIds = getDirectoryIds(context);
	int size = directoryIds.length;
	if (size == 0) {
	Trace.endSection();
	return false;
	}

	DirectoryQueryCompleteListenerFactory listenerFactory =
	new DirectoryQueryCompleteListenerFactory(context, size, listener);

	// The current implementation of multiple async query runs in single handler thread
	// in AsyncQueryHandler.
	// intermediateListener.onQueryComplete is also called from the same caller thread.
	// TODO(a bug): use thread pool instead of single thread.
	for (int i = 0; i < size; i++) {
	long directoryId = directoryIds[i];
	Uri uri = ContactInfoHelper.getContactInfoLookupUri(info.phoneNumber, directoryId);
	if (DBG) {
	Log.d(LOG_TAG, "directoryId: " + directoryId + " uri: " + uri);
	}
	OnQueryCompleteListener intermediateListener = listenerFactory.newListener(directoryId);
	startQueryInternal(token, context, info, intermediateListener, cookie, uri);
	}
	Trace.endSection();
	return true;
	}

	private static long[] getDirectoryIds(Context context) {
	ArrayList<Long> results = new ArrayList<>();

	Uri uri = Uri.withAppendedPath(ContactsContract.AUTHORITY_URI, "directories_enterprise");

	ContentResolver cr = context.getContentResolver();
	Cursor cursor = cr.query(uri, DIRECTORY_PROJECTION, null, null, null);
	addDirectoryIdsFromCursor(cursor, results);

	long[] result = new long[results.size()];
	for (int i = 0; i < results.size(); i++) {
	result[i] = results.get(i);
	}
	return result;
	}

	private static void addDirectoryIdsFromCursor(Cursor cursor, ArrayList<Long> results) {
	if (cursor != null) {
	int idIndex = cursor.getColumnIndex(Directory._ID);
	while (cursor.moveToNext()) {
	long id = cursor.getLong(idIndex);
	if (Directory.isRemoteDirectoryId(id)) {
	results.add(id);
	}
	}
	cursor.close();
	}
	}

	private static String sanitizeUriToString(Uri uri) {
	if (uri != null) {
	String uriString = uri.toString();
	int indexOfLastSlash = uriString.lastIndexOf('/');
	if (indexOfLastSlash > 0) {
	return uriString.substring(0, indexOfLastSlash) + "/xxxxxxx";
	} else {
	return uriString;
	}
	} else {
	return "";
	}
	}

	/** Wrap the cookie from the WorkerArgs with additional information needed by our classes. */
	private static final class CookieWrapper {

	public OnQueryCompleteListener listener;
	public Object cookie;
	public int event;
	public String number;
	public String countryIso;
	}
	/* Directory lookup related code - END */

	/** Simple exception used to communicate problems with the query pool. */
	private static class QueryPoolException extends SQLException {

	QueryPoolException(String error) {
	super(error);
	}
	}

	private static final class DirectoryQueryCompleteListenerFactory {

	private final OnQueryCompleteListener listener;
	private final Context context;
	// Make sure listener to be called once and only once
	private int count;
	private boolean isListenerCalled;

	DirectoryQueryCompleteListenerFactory(
	Context context, int size, OnQueryCompleteListener listener) {
	count = size;
	this.listener = listener;
	isListenerCalled = false;
	this.context = context;
	}

	private void onDirectoryQueryComplete(
	int token, Object cookie, CallerInfo ci, long directoryId) {
	boolean shouldCallListener = false;
	synchronized (this) {
	count = count - 1;
	if (!isListenerCalled && (ci.contactExists \|\| count == 0)) {
	isListenerCalled = true;
	shouldCallListener = true;
	}
	}

	// Don't call callback in synchronized block because mListener.onQueryComplete may
	// take long time to complete
	if (shouldCallListener && listener != null) {
	addCallerInfoIntoCache(ci, directoryId);
	listener.onQueryComplete(token, cookie, ci);
	}
	}

	private void addCallerInfoIntoCache(CallerInfo ci, long directoryId) {
	CachedNumberLookupService cachedNumberLookupService =
	PhoneNumberCache.get(context).getCachedNumberLookupService();
	if (ci.contactExists && cachedNumberLookupService != null) {
	// 1. Cache caller info
	CachedContactInfo cachedContactInfo =
	CallerInfoUtils.buildCachedContactInfo(cachedNumberLookupService, ci);
	String directoryLabel = context.getString(R.string.directory_search_label);
	cachedContactInfo.setDirectorySource(directoryLabel, directoryId);
	cachedNumberLookupService.addContact(context, cachedContactInfo);

	// 2. Cache photo
	if (ci.contactDisplayPhotoUri != null && ci.normalizedNumber != null) {
	try (InputStream in =
	context.getContentResolver().openInputStream(ci.contactDisplayPhotoUri)) {
	if (in != null) {
	cachedNumberLookupService.addPhoto(context, ci.normalizedNumber, in);
	}
	} catch (IOException e) {
	Log.e(LOG_TAG, "failed to fetch directory contact photo", e);
	}
	}
	}
	}

	OnQueryCompleteListener newListener(long directoryId) {
	return new DirectoryQueryCompleteListener(directoryId);
	}

	private class DirectoryQueryCompleteListener implements OnQueryCompleteListener {

	private final long directoryId;

	DirectoryQueryCompleteListener(long directoryId) {
	this.directoryId = directoryId;
	}

	@Override
	public void onDataLoaded(int token, Object cookie, CallerInfo ci) {
	Log.d(LOG_TAG, "DirectoryQueryCompleteListener.onDataLoaded");
	listener.onDataLoaded(token, cookie, ci);
	}

	@Override
	public void onQueryComplete(int token, Object cookie, CallerInfo ci) {
	Log.d(LOG_TAG, "DirectoryQueryCompleteListener.onQueryComplete");
	onDirectoryQueryComplete(token, cookie, ci, directoryId);
	}
	}
	}

	/** Our own implementation of the AsyncQueryHandler. */
	private static class CallerInfoAsyncQueryHandler extends AsyncQueryHandler {

	/**
	* The information relevant to each CallerInfo query. Each query may have multiple listeners, so
	* each AsyncCursorInfo is associated with 2 or more CookieWrapper objects in the queue (one
	* with a new query event, and one with a end event, with 0 or more additional listeners in
	* between).
	*/
	private Context queryContext;

	private Uri queryUri;
	private CallerInfo callerInfo;

	/** Asynchronous query handler class for the contact / callerinfo object. */
	private CallerInfoAsyncQueryHandler(Context context, Uri contactRef) {
	super(context.getContentResolver());
	this.queryContext = context;
	this.queryUri = contactRef;
	}

	@Override
	public void startQuery(
	int token,
	Object cookie,
	Uri uri,
	String[] projection,
	String selection,
	String[] selectionArgs,
	String orderBy) {
	if (DBG) {
	// Show stack trace with the arguments.
	Log.d(
	LOG_TAG,
	"InCall: startQuery: url="
	+ uri
	+ " projection=["
	+ Arrays.toString(projection)
	+ "]"
	+ " selection="
	+ selection
	+ " "
	+ " args=["
	+ Arrays.toString(selectionArgs)
	+ "]",
	new RuntimeException("STACKTRACE"));
	}
	super.startQuery(token, cookie, uri, projection, selection, selectionArgs, orderBy);
	}

	@Override
	protected Handler createHandler(Looper looper) {
	return new CallerInfoWorkerHandler(looper);
	}

	/**
	* Overrides onQueryComplete from AsyncQueryHandler.
	*
	* <p>This method takes into account the state of this class; we construct the CallerInfo object
	* only once for each set of listeners. When the query thread has done its work and calls this
	* method, we inform the remaining listeners in the queue, until we're out of listeners. Once we
	* get the message indicating that we should expect no new listeners for this CallerInfo object,
	* we release the AsyncCursorInfo back into the pool.
	*/
	@Override
	protected void onQueryComplete(int token, Object cookie, Cursor cursor) {
	Log.d(this, "##### onQueryComplete() ##### query complete for token: " + token);

	CookieWrapper cw = (CookieWrapper) cookie;

	if (cw.listener != null) {
	Log.d(
	this,
	"notifying listener: "
	+ cw.listener.getClass()
	+ " for token: "
	+ token
	+ callerInfo);
	cw.listener.onQueryComplete(token, cw.cookie, callerInfo);
	}
	queryContext = null;
	queryUri = null;
	callerInfo = null;
	}

	void updateData(int token, Object cookie, Cursor cursor) {
	try {
	Log.d(this, "##### updateData() ##### for token: " + token);

	//get the cookie and notify the listener.
	CookieWrapper cw = (CookieWrapper) cookie;
	if (cw == null) {
	// Normally, this should never be the case for calls originating
	// from within this code.
	// However, if there is any code that calls this method, we should
	// check the parameters to make sure they're viable.
	Log.d(this, "Cookie is null, ignoring onQueryComplete() request.");
	return;
	}

	// check the token and if needed, create the callerinfo object.
	if (callerInfo == null) {
	if ((queryContext == null) \|\| (queryUri == null)) {
	throw new QueryPoolException(
	"Bad context or query uri, or CallerInfoAsyncQuery already released.");
	}

	// adjust the callerInfo data as needed, and only if it was set from the
	// initial query request.
	// Change the callerInfo number ONLY if it is an emergency number or the
	// voicemail number, and adjust other data (including photoResource)
	// accordingly.
	if (cw.event == EVENT_EMERGENCY_NUMBER) {
	// Note we're setting the phone number here (refer to javadoc
	// comments at the top of CallerInfo class).
	callerInfo = new CallerInfo().markAsEmergency(queryContext);
	} else if (cw.event == EVENT_VOICEMAIL_NUMBER) {
	callerInfo = new CallerInfo().markAsVoiceMail(queryContext);
	} else {
	callerInfo = CallerInfo.getCallerInfo(queryContext, queryUri, cursor);
	Log.d(this, "==> Got mCallerInfo: " + callerInfo);

	CallerInfo newCallerInfo =
	CallerInfo.doSecondaryLookupIfNecessary(queryContext, cw.number, callerInfo);
	if (newCallerInfo != callerInfo) {
	callerInfo = newCallerInfo;
	Log.d(this, "#####async contact look up with numeric username" + callerInfo);
	}
	callerInfo.countryIso = cw.countryIso;

	// Final step: look up the geocoded description.
	if (ENABLE_UNKNOWN_NUMBER_GEO_DESCRIPTION) {
	// Note we do this only if we don't have a valid name (i.e. if
	// no contacts matched the phone number of the incoming call),
	// since that's the only case where the incoming-call UI cares
	// about this field.
	//
	// (TODO: But if we ever want the UI to show the geoDescription
	// even when we do match a contact, we'll need to either call
	// updateGeoDescription() unconditionally here, or possibly add a
	// new parameter to CallerInfoAsyncQuery.startQuery() to force
	// the geoDescription field to be populated.)

	if (TextUtils.isEmpty(callerInfo.name)) {
	// Actually when no contacts match the incoming phone number,
	// the CallerInfo object is totally blank here (i.e. no name
	// or phoneNumber). So we need to pass in cw.number as
	// a fallback number.
	callerInfo.updateGeoDescription(queryContext, cw.number);
	}
	}

	// Use the number entered by the user for display.
	if (!TextUtils.isEmpty(cw.number)) {
	callerInfo.phoneNumber = cw.number;
	}
	}

	Log.d(this, "constructing CallerInfo object for token: " + token);

	if (cw.listener != null) {
	cw.listener.onDataLoaded(token, cw.cookie, callerInfo);
	}
	}

	} finally {
	// The cursor may have been closed in CallerInfo.getCallerInfo()
	if (cursor != null && !cursor.isClosed()) {
	cursor.close();
	}
	}
	}

	/**
	* Our own query worker thread.
	*
	* <p>This thread handles the messages enqueued in the looper. The normal sequence of events is
	* that a new query shows up in the looper queue, followed by 0 or more add listener requests,
	* and then an end request. Of course, these requests can be interlaced with requests from other
	* tokens, but is irrelevant to this handler since the handler has no state.
	*
	* <p>Note that we depend on the queue to keep things in order; in other words, the looper queue
	* must be FIFO with respect to input from the synchronous startQuery calls and output to this
	* handleMessage call.
	*
	* <p>This use of the queue is required because CallerInfo objects may be accessed multiple
	* times before the query is complete. All accesses (listeners) must be queued up and informed
	* in order when the query is complete.
	*/
	class CallerInfoWorkerHandler extends WorkerHandler {

	CallerInfoWorkerHandler(Looper looper) {
	super(looper);
	}

	@Override
	public void handleMessage(Message msg) {
	WorkerArgs args = (WorkerArgs) msg.obj;
	CookieWrapper cw = (CookieWrapper) args.cookie;

	if (cw == null) {
	// Normally, this should never be the case for calls originating
	// from within this code.
	// However, if there is any code that this Handler calls (such as in
	// super.handleMessage) that DOES place unexpected messages on the
	// queue, then we need pass these messages on.
	Log.d(
	this,
	"Unexpected command (CookieWrapper is null): "
	+ msg.what
	+ " ignored by CallerInfoWorkerHandler, passing onto parent.");

	super.handleMessage(msg);
	} else {
	Log.d(
	this,
	"Processing event: "
	+ cw.event
	+ " token (arg1): "
	+ msg.arg1
	+ " command: "
	+ msg.what
	+ " query URI: "
	+ sanitizeUriToString(args.uri));

	switch (cw.event) {
	case EVENT_NEW_QUERY:
	final ContentResolver resolver = queryContext.getContentResolver();

	// This should never happen.
	if (resolver == null) {
	Log.e(this, "Content Resolver is null!");
	return;
	}
	// start the sql command.
	Cursor cursor;
	try {
	cursor =
	resolver.query(
	args.uri,
	args.projection,
	args.selection,
	args.selectionArgs,
	args.orderBy);
	// Calling getCount() causes the cursor window to be filled,
	// which will make the first access on the main thread a lot faster.
	if (cursor != null) {
	cursor.getCount();
	}
	} catch (Exception e) {
	Log.e(this, "Exception thrown during handling EVENT_ARG_QUERY", e);
	cursor = null;
	}

	args.result = cursor;
	updateData(msg.arg1, cw, cursor);
	break;

	// shortcuts to avoid query for recognized numbers.
	case EVENT_EMERGENCY_NUMBER:
	case EVENT_VOICEMAIL_NUMBER:
	case EVENT_ADD_LISTENER:
	updateData(msg.arg1, cw, (Cursor) args.result);
	break;
	default: // fall out
	}
	Message reply = args.handler.obtainMessage(msg.what);
	reply.obj = args;
	reply.arg1 = msg.arg1;

	reply.sendToTarget();
	}
	}
	}
	}
	}