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      1 /*
      2  * Copyright (C) 2008 Esmertec AG.
      3  * Copyright (C) 2008 The Android Open Source Project
      4  *
      5  * Licensed under the Apache License, Version 2.0 (the "License");
      6  * you may not use this file except in compliance with the License.
      7  * You may obtain a copy of the License at
      8  *
      9  *      http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  * Unless required by applicable law or agreed to in writing, software
     12  * distributed under the License is distributed on an "AS IS" BASIS,
     13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  * See the License for the specific language governing permissions and
     15  * limitations under the License.
     16  */
     17 package com.android.mms.util;
     18 
     19 import android.content.Context;
     20 import android.database.Cursor;
     21 import android.database.sqlite.SqliteWrapper;
     22 import android.net.Uri;
     23 import android.provider.Telephony.Mms;
     24 import android.provider.Telephony.Mms.Addr;
     25 import android.text.TextUtils;
     26 
     27 import com.android.i18n.phonenumbers.PhoneNumberUtil;
     28 import com.android.mms.MmsApp;
     29 import com.android.mms.R;
     30 import com.google.android.mms.pdu.EncodedStringValue;
     31 import com.google.android.mms.pdu.PduHeaders;
     32 import com.google.android.mms.pdu.PduPersister;
     33 
     34 public class AddressUtils {
     35     private static final String TAG = "AddressUtils";
     36     private static PhoneNumberUtil mPhoneNumberUtil;
     37 
     38     private AddressUtils() {
     39         // Forbidden being instantiated.
     40     }
     41 
     42     public static String getFrom(Context context, Uri uri) {
     43         String msgId = uri.getLastPathSegment();
     44         Uri.Builder builder = Mms.CONTENT_URI.buildUpon();
     45 
     46         builder.appendPath(msgId).appendPath("addr");
     47 
     48         Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(),
     49                             builder.build(), new String[] {Addr.ADDRESS, Addr.CHARSET},
     50                             Addr.TYPE + "=" + PduHeaders.FROM, null, null);
     51 
     52         if (cursor != null) {
     53             try {
     54                 if (cursor.moveToFirst()) {
     55                     String from = cursor.getString(0);
     56 
     57                     if (!TextUtils.isEmpty(from)) {
     58                         byte[] bytes = PduPersister.getBytes(from);
     59                         int charset = cursor.getInt(1);
     60                         return new EncodedStringValue(charset, bytes)
     61                                 .getString();
     62                     }
     63                 }
     64             } finally {
     65                 cursor.close();
     66             }
     67         }
     68         return context.getString(R.string.hidden_sender_address);
     69     }
     70 
     71     /**
     72      * isPossiblePhoneNumberCanDoFileAccess does a more accurate test if the input is a
     73      * phone number, but it can do file access to load country prefixes and other info, so
     74      * it's not safe to call from the UI thread.
     75      * @param query the phone number to test
     76      * @return true if query looks like a valid phone number
     77      */
     78     public static boolean isPossiblePhoneNumberCanDoFileAccess(String query) {
     79         String currentCountry = MmsApp.getApplication().getCurrentCountryIso().toUpperCase();
     80         if (mPhoneNumberUtil == null) {
     81             mPhoneNumberUtil = PhoneNumberUtil.getInstance();
     82         }
     83         return mPhoneNumberUtil.isPossibleNumber(query, currentCountry);
     84     }
     85 }
     86