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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 com.android.mms.R;
     20 import com.google.android.mms.pdu.EncodedStringValue;
     21 import com.google.android.mms.pdu.PduHeaders;
     22 import com.google.android.mms.pdu.PduPersister;
     23 import android.database.sqlite.SqliteWrapper;
     24 
     25 import android.content.Context;
     26 import android.database.Cursor;
     27 import android.net.Uri;
     28 import android.provider.Telephony.Mms;
     29 import android.provider.Telephony.Mms.Addr;
     30 import android.text.TextUtils;
     31 import android.telephony.PhoneNumberUtils;
     32 
     33 public class AddressUtils {
     34     private static final String TAG = "AddressUtils";
     35 
     36     private AddressUtils() {
     37         // Forbidden being instantiated.
     38     }
     39 
     40     public static String getFrom(Context context, Uri uri) {
     41         String msgId = uri.getLastPathSegment();
     42         Uri.Builder builder = Mms.CONTENT_URI.buildUpon();
     43 
     44         builder.appendPath(msgId).appendPath("addr");
     45 
     46         Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(),
     47                             builder.build(), new String[] {Addr.ADDRESS, Addr.CHARSET},
     48                             Addr.TYPE + "=" + PduHeaders.FROM, null, null);
     49 
     50         if (cursor != null) {
     51             try {
     52                 if (cursor.moveToFirst()) {
     53                     String from = cursor.getString(0);
     54 
     55                     if (!TextUtils.isEmpty(from)) {
     56                         byte[] bytes = PduPersister.getBytes(from);
     57                         int charset = cursor.getInt(1);
     58                         return new EncodedStringValue(charset, bytes)
     59                                 .getString();
     60                     }
     61                 }
     62             } finally {
     63                 cursor.close();
     64             }
     65         }
     66         return context.getString(R.string.hidden_sender_address);
     67     }
     68 }
     69