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      1 /*
      2  * Copyright (C) 2009 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.internal.telephony.gsm;
     18 
     19 import java.io.File;
     20 import java.io.FileNotFoundException;
     21 import java.io.FileReader;
     22 import java.io.IOException;
     23 import java.util.HashMap;
     24 
     25 import org.xmlpull.v1.XmlPullParser;
     26 import org.xmlpull.v1.XmlPullParserException;
     27 
     28 import android.os.Environment;
     29 import android.util.Log;
     30 import android.util.Xml;
     31 
     32 import com.android.internal.util.XmlUtils;
     33 
     34 public class SpnOverride {
     35     private HashMap<String, String> CarrierSpnMap;
     36 
     37 
     38     static final String LOG_TAG = "GSM";
     39     static final String PARTNER_SPN_OVERRIDE_PATH ="etc/spn-conf.xml";
     40 
     41     SpnOverride () {
     42         CarrierSpnMap = new HashMap<String, String>();
     43         loadSpnOverrides();
     44     }
     45 
     46     boolean containsCarrier(String carrier) {
     47         return CarrierSpnMap.containsKey(carrier);
     48     }
     49 
     50     String getSpn(String carrier) {
     51         return CarrierSpnMap.get(carrier);
     52     }
     53 
     54     private void loadSpnOverrides() {
     55         FileReader spnReader;
     56 
     57         final File spnFile = new File(Environment.getRootDirectory(),
     58                 PARTNER_SPN_OVERRIDE_PATH);
     59 
     60         try {
     61             spnReader = new FileReader(spnFile);
     62         } catch (FileNotFoundException e) {
     63             Log.w(LOG_TAG, "Can't open " +
     64                     Environment.getRootDirectory() + "/" + PARTNER_SPN_OVERRIDE_PATH);
     65             return;
     66         }
     67 
     68         try {
     69             XmlPullParser parser = Xml.newPullParser();
     70             parser.setInput(spnReader);
     71 
     72             XmlUtils.beginDocument(parser, "spnOverrides");
     73 
     74             while (true) {
     75                 XmlUtils.nextElement(parser);
     76 
     77                 String name = parser.getName();
     78                 if (!"spnOverride".equals(name)) {
     79                     break;
     80                 }
     81 
     82                 String numeric = parser.getAttributeValue(null, "numeric");
     83                 String data    = parser.getAttributeValue(null, "spn");
     84 
     85                 CarrierSpnMap.put(numeric, data);
     86             }
     87         } catch (XmlPullParserException e) {
     88             Log.w(LOG_TAG, "Exception in spn-conf parser " + e);
     89         } catch (IOException e) {
     90             Log.w(LOG_TAG, "Exception in spn-conf parser " + e);
     91         }
     92     }
     93 
     94 }
     95