1 /* 2 * Copyright (C) 2011 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.settings.vpn2; 18 19 import java.nio.charset.Charsets; 20 21 /** 22 * Parcel-like entity class for VPN profiles. To keep things simple, all 23 * fields are package private. Methods are provided for serialization, so 24 * storage can be implemented easily. Two rules are set for this class. 25 * First, all fields must be kept non-null. Second, always make a copy 26 * using clone() before modifying. 27 */ 28 class VpnProfile implements Cloneable { 29 // Match these constants with R.array.vpn_types. 30 static final int TYPE_PPTP = 0; 31 static final int TYPE_L2TP_IPSEC_PSK = 1; 32 static final int TYPE_L2TP_IPSEC_RSA = 2; 33 static final int TYPE_IPSEC_XAUTH_PSK = 3; 34 static final int TYPE_IPSEC_XAUTH_RSA = 4; 35 static final int TYPE_IPSEC_HYBRID_RSA = 5; 36 static final int TYPE_MAX = 5; 37 38 // Entity fields. 39 final String key; // -1 40 String name = ""; // 0 41 int type = TYPE_PPTP; // 1 42 String server = ""; // 2 43 String username = ""; // 3 44 String password = ""; // 4 45 String dnsServers = ""; // 5 46 String searchDomains = ""; // 6 47 String routes = ""; // 7 48 boolean mppe = true; // 8 49 String l2tpSecret = ""; // 9 50 String ipsecIdentifier = "";// 10 51 String ipsecSecret = ""; // 11 52 String ipsecUserCert = ""; // 12 53 String ipsecCaCert = ""; // 13 54 55 // Helper fields. 56 boolean saveLogin = false; 57 VpnProfile(String key)58 VpnProfile(String key) { 59 this.key = key; 60 } 61 decode(String key, byte[] value)62 static VpnProfile decode(String key, byte[] value) { 63 try { 64 if (key == null) { 65 return null; 66 } 67 68 String[] values = new String(value, Charsets.UTF_8).split("\0", -1); 69 // Currently it always has 14 fields. 70 if (values.length < 14) { 71 return null; 72 } 73 74 VpnProfile profile = new VpnProfile(key); 75 profile.name = values[0]; 76 profile.type = Integer.valueOf(values[1]); 77 if (profile.type < 0 || profile.type > TYPE_MAX) { 78 return null; 79 } 80 profile.server = values[2]; 81 profile.username = values[3]; 82 profile.password = values[4]; 83 profile.dnsServers = values[5]; 84 profile.searchDomains = values[6]; 85 profile.routes = values[7]; 86 profile.mppe = Boolean.valueOf(values[8]); 87 profile.l2tpSecret = values[9]; 88 profile.ipsecIdentifier = values[10]; 89 profile.ipsecSecret = values[11]; 90 profile.ipsecUserCert = values[12]; 91 profile.ipsecCaCert = values[13]; 92 93 profile.saveLogin = !profile.username.isEmpty() || !profile.password.isEmpty(); 94 return profile; 95 } catch (Exception e) { 96 // ignore 97 } 98 return null; 99 } 100 encode()101 byte[] encode() { 102 StringBuilder builder = new StringBuilder(name); 103 builder.append('\0').append(type); 104 builder.append('\0').append(server); 105 builder.append('\0').append(saveLogin ? username : ""); 106 builder.append('\0').append(saveLogin ? password : ""); 107 builder.append('\0').append(dnsServers); 108 builder.append('\0').append(searchDomains); 109 builder.append('\0').append(routes); 110 builder.append('\0').append(mppe); 111 builder.append('\0').append(l2tpSecret); 112 builder.append('\0').append(ipsecIdentifier); 113 builder.append('\0').append(ipsecSecret); 114 builder.append('\0').append(ipsecUserCert); 115 builder.append('\0').append(ipsecCaCert); 116 return builder.toString().getBytes(Charsets.UTF_8); 117 } 118 } 119