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      1 /*
      2  * Copyright (C) 2007-2008 Esmertec AG.
      3  * Copyright (C) 2007-2008 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 
     18 package com.android.mms.transaction;
     19 
     20 import android.content.Context;
     21 import android.database.Cursor;
     22 import android.database.sqlite.SqliteWrapper;
     23 import android.net.NetworkUtils;
     24 import android.provider.Telephony;
     25 import android.text.TextUtils;
     26 import android.util.Log;
     27 
     28 import com.android.internal.telephony.PhoneConstants;
     29 import com.android.mms.LogTag;
     30 
     31 /**
     32  * Container of transaction settings. Instances of this class are contained
     33  * within Transaction instances to allow overriding of the default APN
     34  * settings or of the MMS Client.
     35  */
     36 public class TransactionSettings {
     37     private static final String TAG = "TransactionSettings";
     38     private static final boolean DEBUG = true;
     39     private static final boolean LOCAL_LOGV = false;
     40 
     41     private String mServiceCenter;
     42     private String mProxyAddress;
     43     private int mProxyPort = -1;
     44 
     45     private static final String[] APN_PROJECTION = {
     46             Telephony.Carriers.TYPE,            // 0
     47             Telephony.Carriers.MMSC,            // 1
     48             Telephony.Carriers.MMSPROXY,        // 2
     49             Telephony.Carriers.MMSPORT          // 3
     50     };
     51     private static final int COLUMN_TYPE         = 0;
     52     private static final int COLUMN_MMSC         = 1;
     53     private static final int COLUMN_MMSPROXY     = 2;
     54     private static final int COLUMN_MMSPORT      = 3;
     55 
     56     /**
     57      * Constructor that uses the default settings of the MMS Client.
     58      *
     59      * @param context The context of the MMS Client
     60      */
     61     public TransactionSettings(Context context, String apnName) {
     62         if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {
     63             Log.v(TAG, "TransactionSettings: apnName: " + apnName);
     64         }
     65         String selection = Telephony.Carriers.CURRENT + " IS NOT NULL";
     66         String[] selectionArgs = null;
     67         if (!TextUtils.isEmpty(apnName)) {
     68             selection += " AND " + Telephony.Carriers.APN + "=?";
     69             selectionArgs = new String[]{ apnName.trim() };
     70         }
     71 
     72         Cursor cursor = SqliteWrapper.query(context, context.getContentResolver(),
     73                             Telephony.Carriers.CONTENT_URI,
     74                             APN_PROJECTION, selection, selectionArgs, null);
     75 
     76         if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {
     77             Log.v(TAG, "TransactionSettings looking for apn: " + selection + " returned: " +
     78                     (cursor ==null ? "null cursor" : (cursor.getCount() + " hits")));
     79         }
     80 
     81         if (cursor == null) {
     82             Log.e(TAG, "Apn is not found in Database!");
     83             return;
     84         }
     85 
     86         boolean sawValidApn = false;
     87         try {
     88             while (cursor.moveToNext() && TextUtils.isEmpty(mServiceCenter)) {
     89                 // Read values from APN settings
     90                 if (isValidApnType(cursor.getString(COLUMN_TYPE), PhoneConstants.APN_TYPE_MMS)) {
     91                     sawValidApn = true;
     92 
     93                     String mmsc = cursor.getString(COLUMN_MMSC);
     94                     if (mmsc == null) {
     95                         continue;
     96                     }
     97 
     98                     mServiceCenter = NetworkUtils.trimV4AddrZeros(mmsc.trim());
     99                     mProxyAddress = NetworkUtils.trimV4AddrZeros(
    100                             cursor.getString(COLUMN_MMSPROXY));
    101                     if (isProxySet()) {
    102                         String portString = cursor.getString(COLUMN_MMSPORT);
    103                         try {
    104                             mProxyPort = Integer.parseInt(portString);
    105                         } catch (NumberFormatException e) {
    106                             if (TextUtils.isEmpty(portString)) {
    107                                 Log.w(TAG, "mms port not set!");
    108                             } else {
    109                                 Log.e(TAG, "Bad port number format: " + portString, e);
    110                             }
    111                         }
    112                     }
    113                 }
    114             }
    115         } finally {
    116             cursor.close();
    117         }
    118 
    119         Log.v(TAG, "APN setting: MMSC: " + mServiceCenter + " looked for: " + selection);
    120 
    121         if (sawValidApn && TextUtils.isEmpty(mServiceCenter)) {
    122             Log.e(TAG, "Invalid APN setting: MMSC is empty");
    123         }
    124     }
    125 
    126     /**
    127      * Constructor that overrides the default settings of the MMS Client.
    128      *
    129      * @param mmscUrl The MMSC URL
    130      * @param proxyAddr The proxy address
    131      * @param proxyPort The port used by the proxy address
    132      * immediately start a SendTransaction upon completion of a NotificationTransaction,
    133      * false otherwise.
    134      */
    135     public TransactionSettings(String mmscUrl, String proxyAddr, int proxyPort) {
    136         mServiceCenter = mmscUrl != null ? mmscUrl.trim() : null;
    137         mProxyAddress = proxyAddr;
    138         mProxyPort = proxyPort;
    139 
    140         if (Log.isLoggable(LogTag.TRANSACTION, Log.VERBOSE)) {
    141             Log.v(TAG, "TransactionSettings: " + mServiceCenter +
    142                     " proxyAddress: " + mProxyAddress +
    143                     " proxyPort: " + mProxyPort);
    144         }
    145    }
    146 
    147     public String getMmscUrl() {
    148         return mServiceCenter;
    149     }
    150 
    151     public String getProxyAddress() {
    152         return mProxyAddress;
    153     }
    154 
    155     public int getProxyPort() {
    156         return mProxyPort;
    157     }
    158 
    159     public boolean isProxySet() {
    160         return (mProxyAddress != null) && (mProxyAddress.trim().length() != 0);
    161     }
    162 
    163     static private boolean isValidApnType(String types, String requestType) {
    164         // If APN type is unspecified, assume APN_TYPE_ALL.
    165         if (TextUtils.isEmpty(types)) {
    166             return true;
    167         }
    168 
    169         for (String t : types.split(",")) {
    170             if (t.equals(requestType) || t.equals(PhoneConstants.APN_TYPE_ALL)) {
    171                 return true;
    172             }
    173         }
    174         return false;
    175     }
    176 }
    177