1/* 2 * Copyright (C) 2008 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 17package android.net; 18 19import android.os.Parcelable; 20import android.os.Parcel; 21 22/** 23 * A simple object for retrieving / setting an interfaces configuration 24 * @hide 25 */ 26public class InterfaceConfiguration implements Parcelable { 27 public String hwAddr; 28 public int ipAddr; 29 public int netmask; 30 public String interfaceFlags; 31 32 public InterfaceConfiguration() { 33 super(); 34 } 35 36 public String toString() { 37 StringBuffer str = new StringBuffer(); 38 39 str.append("ipddress "); putAddress(str, ipAddr); 40 str.append(" netmask "); putAddress(str, netmask); 41 str.append(" flags ").append(interfaceFlags); 42 str.append(" hwaddr ").append(hwAddr); 43 44 return str.toString(); 45 } 46 47 private static void putAddress(StringBuffer buf, int addr) { 48 buf.append((addr >> 24) & 0xff).append('.'). 49 append((addr >> 16) & 0xff).append('.'). 50 append((addr >> 8) & 0xff).append('.'). 51 append(addr & 0xff); 52 } 53 54 /** 55 * This function determines if the interface is up and has a valid IP 56 * configuration (IP address has a non zero octet). 57 * 58 * Note: It is supposed to be quick and hence should not initiate 59 * any network activity 60 */ 61 public boolean isActive() { 62 try { 63 if(interfaceFlags.contains("up")) { 64 if (ipAddr != 0) return true; 65 } 66 } catch (NullPointerException e) { 67 return false; 68 } 69 return false; 70 } 71 72 /** Implement the Parcelable interface {@hide} */ 73 public int describeContents() { 74 return 0; 75 } 76 77 /** Implement the Parcelable interface {@hide} */ 78 public void writeToParcel(Parcel dest, int flags) { 79 dest.writeString(hwAddr); 80 dest.writeInt(ipAddr); 81 dest.writeInt(netmask); 82 dest.writeString(interfaceFlags); 83 } 84 85 /** Implement the Parcelable interface {@hide} */ 86 public static final Creator<InterfaceConfiguration> CREATOR = 87 new Creator<InterfaceConfiguration>() { 88 public InterfaceConfiguration createFromParcel(Parcel in) { 89 InterfaceConfiguration info = new InterfaceConfiguration(); 90 info.hwAddr = in.readString(); 91 info.ipAddr = in.readInt(); 92 info.netmask = in.readInt(); 93 info.interfaceFlags = in.readString(); 94 return info; 95 } 96 97 public InterfaceConfiguration[] newArray(int size) { 98 return new InterfaceConfiguration[size]; 99 } 100 }; 101} 102