android - 如何将自己的 VPN 设置添加到系统 VPN 设置页面？

Question

有 VPN 的系统设置。我可能会根据 VpnService 添加额外的 VPN 服务类(class)。正如我所见，有一个方法 setConfigureIntent 看起来与我需要的东西相似，但我没有看到任何使用示例。

public VpnService.Builder setConfigureIntent (PendingIntent intent)

Added in API level 14 Set the PendingIntent to an activity for users to configure the VPN connection. If it is not set, the button to configure will not be shown in system-managed dialogs.

VPN 设置页面在这里:

, .

实际上，我只需要在系统 VPN 设置中添加一个按钮，点击显示带有 VPN 特定设置的自定义对话框。

Answer 1

这是@shoe rat 提出的使用 Java 反射的起点:

package com.nikola.despotoski.whatever;

import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

public class VpnSetter {

    private static Map<String , Class<?>> getMappedFields(){
        Map<String , Class<?>> fieldsAndTypes = new HashMap<String, Class<?>>();
        fieldsAndTypes.put("name", String.class);        // 0
        fieldsAndTypes.put("type" , int.class);   // 1
        fieldsAndTypes.put("server", String.class);        // 2
        fieldsAndTypes.put("username", String.class);
        fieldsAndTypes.put("password", String.class);
        fieldsAndTypes.put("dnsServers", String.class);
        fieldsAndTypes.put("searchDomains", String.class);
        fieldsAndTypes.put("routes", String.class);
        fieldsAndTypes.put("mppe", boolean.class);
        fieldsAndTypes.put("l2tpSecret", String.class);
        fieldsAndTypes.put("ipsecIdentifier", String.class);
        fieldsAndTypes.put("ipsecSecret", String.class);
        fieldsAndTypes.put("ipsecUserCert", String.class);
        fieldsAndTypes.put("ipsecCaCert", String.class);
        fieldsAndTypes.put("saveLogin", boolean.class);
        return fieldsAndTypes;
    }
    public static final Set<String> VPN_PROFILE_KEYS = getMappedFields().keySet(); // contains keys for quicker generation of key-value map for each 

    public static void addVpnProfile(String vpnProfileKey, Map<String, Object> values) throws ClassNotFoundException, NoSuchFieldException, IllegalArgumentException, IllegalAccessException, InvocationTargetException, InstantiationException, NoSuchMethodException{
        Class<?> vpnSettings = Class.forName("com.android.settings.vpn2.VpnSettings");
        Class<?>[] privateVpnSettingsClasses = vpnSettings.getDeclaredClasses();
        Class<?> vpnPreference = null;
        Class<?> vpnProfileClass = Class.forName("com.android.settings.vpn2.VpnProfile");
        for(Class<?> priv :privateVpnSettingsClasses ){
            if(priv.getName().equals("VpnPreference")){
                vpnPreference = priv;
                break;
            }
        }
        Field vpnProfileFromVpnPreferenceField = vpnPreference.getDeclaredField("mProfile");
        vpnProfileFromVpnPreferenceField.setAccessible(true);
        Object vpnProfile = vpnProfileFromVpnPreferenceField.get(vpnProfileClass);
        Constructor<?> constructor = vpnProfileFromVpnPreferenceField.getClass().getConstructors()[0];
        constructor.setAccessible(true);
        vpnProfile = constructor.newInstance(vpnProfileKey);//creating new instance of VpnProfile class
        Map<String, Class<?>> vpnProfileMap = getMappedFields();
        Iterator<String> profileKeysIterator = vpnProfileMap.keySet().iterator();
        while(profileKeysIterator.hasNext()){
            String key = profileKeysIterator.next();
            Field field = vpnProfile.getClass().getField(key);
            field.setAccessible(true);
            if(vpnProfileMap.get(key).equals(String.class) && values.get(key)!=null){
                String s = new String();
                field.set(s, "value");//change this
            }else if(vpnProfileMap.get(key).equals(boolean.class) && values.get(key)!=null){
                int i = 0;
                field.setInt(i, 1111111);// change this
            }else if(values.get(key)!=null){
                boolean  b = false;
                field.setBoolean(b, true);// change this
            }

        }
        vpnSettings = Class.forName("com.android.settings.vpn.VpnSettings"); //time to add it to settings
        Method addProfileMethod = vpnSettings.getDeclaredMethod("addProfile", vpnProfile.getClass()); 
        addProfileMethod.setAccessible(true);
        addProfileMethod.invoke(vpnSettings, vpnProfile);
    }
}

我没有时间测试它，但它肯定会给你一个起点。我不确定访问这个隐藏的 API 是否需要根访问权限。请记住，这可能会抛出一些 SecurityExceptions 或 IllegalAccessException。