Merge "Migrate VpnProfile definition to framework."

/*

 * Copyright (C) 2011 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.net;

import java.nio.charset.Charsets;

/**

 * Parcel-like entity class for VPN profiles. To keep things simple, all

 * fields are package private. Methods are provided for serialization, so

 * storage can be implemented easily. Two rules are set for this class.

 * First, all fields must be kept non-null. Second, always make a copy

 * using clone() before modifying.

 *

 * @hide

 */

public class VpnProfile implements Cloneable {

    // Match these constants with R.array.vpn_types.

    public static final int TYPE_PPTP = 0;

    public static final int TYPE_L2TP_IPSEC_PSK = 1;

    public static final int TYPE_L2TP_IPSEC_RSA = 2;

    public static final int TYPE_IPSEC_XAUTH_PSK = 3;

    public static final int TYPE_IPSEC_XAUTH_RSA = 4;

    public static final int TYPE_IPSEC_HYBRID_RSA = 5;

    public static final int TYPE_MAX = 5;

    // Entity fields.

    public final String key;           // -1

    public String name = "";           // 0

    public int type = TYPE_PPTP;       // 1

    public String server = "";         // 2

    public String username = "";       // 3

    public String password = "";       // 4

    public String dnsServers = "";     // 5

    public String searchDomains = "";  // 6

    public String routes = "";         // 7

    public boolean mppe = true;        // 8

    public String l2tpSecret = "";     // 9

    public String ipsecIdentifier = "";// 10

    public String ipsecSecret = "";    // 11

    public String ipsecUserCert = "";  // 12

    public String ipsecCaCert = "";    // 13

    public String ipsecServerCert = "";// 14

    // Helper fields.

    public boolean saveLogin = false;

    public VpnProfile(String key) {

        this.key = key;

    }

    public static VpnProfile decode(String key, byte[] value) {

        try {

            if (key == null) {

                return null;

            }

            String[] values = new String(value, Charsets.UTF_8).split("\0", -1);

            // There can be 14 or 15 values in ICS MR1.

            if (values.length < 14 || values.length > 15) {

                return null;

            }

            VpnProfile profile = new VpnProfile(key);

            profile.name = values[0];

            profile.type = Integer.valueOf(values[1]);

            if (profile.type < 0 || profile.type > TYPE_MAX) {

                return null;

            }

            profile.server = values[2];

            profile.username = values[3];

            profile.password = values[4];

            profile.dnsServers = values[5];

            profile.searchDomains = values[6];

            profile.routes = values[7];

            profile.mppe = Boolean.valueOf(values[8]);

            profile.l2tpSecret = values[9];

            profile.ipsecIdentifier = values[10];

            profile.ipsecSecret = values[11];

            profile.ipsecUserCert = values[12];

            profile.ipsecCaCert = values[13];

            profile.ipsecServerCert = (values.length > 14) ? values[14] : "";

            profile.saveLogin = !profile.username.isEmpty() || !profile.password.isEmpty();

            return profile;

        } catch (Exception e) {

            // ignore

        }

        return null;

    }

    public byte[] encode() {

        StringBuilder builder = new StringBuilder(name);

        builder.append('\0').append(type);

        builder.append('\0').append(server);

        builder.append('\0').append(saveLogin ? username : "");

        builder.append('\0').append(saveLogin ? password : "");

        builder.append('\0').append(dnsServers);

        builder.append('\0').append(searchDomains);

        builder.append('\0').append(routes);

        builder.append('\0').append(mppe);

        builder.append('\0').append(l2tpSecret);

        builder.append('\0').append(ipsecIdentifier);

        builder.append('\0').append(ipsecSecret);

        builder.append('\0').append(ipsecUserCert);

        builder.append('\0').append(ipsecCaCert);

        builder.append('\0').append(ipsecServerCert);

        return builder.toString().getBytes(Charsets.UTF_8);

    }

}