content: /*
   * Copyright (C) 2008 The Android Open Source 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.internal.telephony;
  
  import android.annotation.UnsupportedAppUsage;
  
  public abstract class SmsAddress {
      // From TS 23.040 9.1.2.5 and TS 24.008 table 10.5.118
      // and C.S0005-D table 2.7.1.3.2.4-2
      public static final int TON_UNKNOWN = 0;
      public static final int TON_INTERNATIONAL = 1;
      public static final int TON_NATIONAL = 2;
      public static final int TON_NETWORK = 3;
      public static final int TON_SUBSCRIBER = 4;
      public static final int TON_ALPHANUMERIC = 5;
      public static final int TON_ABBREVIATED = 6;
  
      public int ton;
      public String address;
      @UnsupportedAppUsage
      public byte[] origBytes;
  
      /**
       * Returns the address of the SMS message in String form or null if unavailable
       */
      public String getAddressString() {
          return address;
      }
  
      /**
       * Returns true if this is an alphanumeric address
       */
      public boolean isAlphanumeric() {
          return ton == TON_ALPHANUMERIC;
      }
  
      /**
       * Returns true if this is a network address
       */
      public boolean isNetworkSpecific() {
          return ton == TON_NETWORK;
      }
  
      public boolean couldBeEmailGateway() {
          // Some carriers seems to send email gateway messages in this form:
          // from: an UNKNOWN TON, 3 or 4 digits long, beginning with a 5
          // PID: 0x00, Data coding scheme 0x03
          // So we just attempt to treat any message from an address length <= 4
          // as an email gateway
  
          return address.length() <= 4;
      }
  
  }
  