最近看到某客户端有一个检测模拟器的方法，我正常手机结果被判断是模拟器了，很好奇，于是找了一下原因。
普遍检测方法
public boolean isemulator() {
string url = "tel:" "123456";
intent intent = new intent();
intent.setdata(uri.parse(url));
intent.setaction(intent.action_dial);
// 是否可以处理跳转到拨号的 intent
boolean canresolveintent = intent.resolveactivity(mcontext.getpackagemanager()) != null;
return build.fingerprint.startswith("generic")
|| build.fingerprint.tolowercase().contains("vbox")
|| build.fingerprint.tolowercase().contains("test-keys")
|| build.model.contains("google_sdk")
|| build.model.contains("emulator")
|| build.serial.equalsignorecase("unknown")
|| build.serial.equalsignorecase("android")
|| build.model.contains("android sdk built for x86")
|| build.manufacturer.contains("genymotion")
|| (build.brand.startswith("generic") && build.device.startswith("generic"))
|| "google_sdk".equals(build.product)
|| ((telephonymanager) mcontext.getsystemservice(context.telephony_service))
.getnetworkoperatorname().tolowercase().equals("android")
|| ！canresolverintent;
}
这个代码检测模拟器有两个问题：
1、拨号检测，android10.0及以上均为false
2、build.serial，android8.0以上均为unknown
这导致8.0以上系统均会被误判
推荐模拟器检测方法
设备信息检测
private static final string[] known_numbers = {"15555215554", "15555215556", "15555215558", "15555215560", "15555215562", "15555215564", "15555215566", "15555215568", "15555215570", "15555215572", "15555215574", "15555215576", "15555215578", "15555215580", "15555215582", "15555215584",};
private boolean detectemulator() {
if (build.fingerprint.startswith("generic") || build.fingerprint.startswith("unknown")
|| build.model.contains("google_sdk") || build.model.contains("emulator")
|| build.model.contains("android sdk built for x86") || build.manufacturer.contains("genymotion")
|| (build.brand.startswith("generic") && build.device.startswith("generic"))
|| "google_sdk".equals(build.product)) {
return true;
}
if (build.product.equals("sdk") || build.product.equals("sdk_x86")
|| build.product.equals("vbox86p") || build.product.equals("emulator")) {
return true;
}
if (build.board == null) {
return true;
}
if (build.board.equals("unknown")
|| build.board.contains("android")
|| build.board.contains("droid")) {
return true;
}
if (build.device == null) {
return true;
}
if (build.device.equals("unknown")
|| build.device.contains("android")
|| build.device.contains("droid")) {
return true;
}
if (build.hardware == null) {
return true;
}
if (build.hardware.equals("goldfish")
|| build.hardware.equals("ranchu")
|| build.hardware.contains("ranchu")) {
return true;
}
if (build.brand == null) {
return true;
}
if (build.brand.startswith("generic") && build.device.startswith("generic")) {
return true;
}
if (build.manufacturer.equals("unknown")) {
return true;
}
if (build.manufacturer.equals("genymotion")) {
return true;
}
if ((build.brand.startswith("generic") && build.device.startswith("generic"))
|| "google_sdk".equals(build.product)) {
return true;
}
if (build.product == null) {
return true;
}
if (build.product.equals("sdk")
|| build.product.equals("sdk_x86")
|| build.product.equals("vbox86p")
|| build.product.equals("emulator")) {
return true;
}
if (build.hardware.equals("goldfish")
|| build.hardware.equals("ranchu")) {
return true;
}
if (build.fingerprint.startswith("generic")
|| build.fingerprint.startswith("unknown")
|| build.model.contains("google_sdk")
|| build.model.contains("emulator")
|| build.model.contains("android sdk built for x86")
|| build.manufacturer.contains("genymotion")
|| (build.brand.startswith("generic") && build.device.startswith("generic"))
|| "google_sdk".equals(build.product)) {
return true;
}
if (build.product == null) {
return true;
}
if (build.product.equals("sdk")
|| build.product.equals("sdk_x86")
|| build.product.equals("vbox86p")
|| build.product.equals("emulator")) {
return true;
}
if (build.hardware.equals("goldfish")
|| build.hardware.equals("ranchu")) {
return true;
}
if (new file("/dev/socket/qemud").exists()
|| new file("/dev/qemu_pipe").exists()) {
return true;
}
try {
telephonymanager telephonymanager = (telephonymanager) getsystemservice(telephony_service);
if (telephonymanager != null) {
string deviceid = telephonymanager.getdeviceid();
list knownnumbers = arrays.aslist(known_numbers);
if (knownnumbers.contains(deviceid)) {
return true;
}
}
} catch (exception e) {
}
return false;
}
上述代码使用了多种方法来检测设备是否为模拟器，这些方法包括：
- 检测 build.fingerprint 是否以 “generic” 或 “unknown” 开头
- 检测 build.model 是否包含 “google_sdk”、“emulator” 或 “android sdk built for x86”
- 检测 build.manufacturer 是否为 “genymotion”
- 检测 build.product 是否为 “sdk”、“sdk_x86”、“vbox86p” 或 “emulator”
- 检测 build.board 是否为 “unknown” 或包含 “android” 或 “droid”
- 检测 build.device 是否为 “unknown” 或包含 “android” 或 “droid”
- 检测 build.hardware 是否为 “goldfish”、“ranchu” 或包含 “ranchu”
- 检测 build.brand 是否以 “generic” 开头，且 build.device 以 “generic” 开头
- 检测 build.product 是否为 “google_sdk”
- 检测是否存在文件 “/dev/socket/qemud” 或 “/dev/qemu_pipe”
- 检测设备的电话号码是否为已知的模拟器电话号码
上述方法都是基于固件信息的判断，通过测试发现很多模拟器都失效，参考网上的教程，还有蓝牙、光线传感器、cpu检测，配合上面的固件信息，基本可以搞定大部分模拟器。
蓝牙检测方法
public boolean nothasbluetooth() {
bluetoothadapter ba = bluetoothadapter.getdefaultadapter();
if (ba == null) {
return true;
} else {
// 如果有蓝牙不一定是有效的。获取蓝牙名称，若为null 则默认为模拟器
string name = ba.getname();
if (textutils.isempty(name)) {
return true;
} else {
return false;
}
}
}
光传感器检测方法
public static boolean nothaslightsensormanager(context context) {
sensormanager sensormanager = (sensormanager) context.getsystemservice(sensor_service);
sensor sensor8 = sensormanager.getdefaultsensor(sensor.type_light); //光
if (null == sensor8) {
return true;
} else {
return false;
}
}
cpu检测方法
public static boolean checkisnotrealphone() {
string cpuinfo = readcpuinfo();
if ((cpuinfo.contains("intel") || cpuinfo.contains("amd"))) {
return true;
}
return false;
}
public static string readcpuinfo() {
string result = "";
try {
string[] args = {"/system/bin/cat", "/proc/cpuinfo"};
processbuilder cmd = new processbuilder(args);
process process = cmd.start();
stringbuffer sb = new stringbuffer();
string readline = "";
bufferedreader responsereader = new bufferedreader(new inputstreamreader(process.getinputstream(), "utf-8"));
while ((readline = responsereader.readline()) != null) {
sb.append(readline);
}
responsereader.close();
result = sb.tostring().tolowercase();
} catch (ioexception ex) {
}
return result;
}
以上检测方法也不是完全可行，随着android系统的更新，模拟器的增多，我们需要具体研究对应的一些变动来更新上述代码。
我们检测要注意一个问题，不一定能检测出所有的模拟器，但是一定不能误杀真机。
总结
建议 首先使用传感器进行可疑性判断
蓝牙, wifi, 电池 可以作为 辅助数据进行监听。
附加传感器类型代码
public string getsensortypename(int type) {
switch (type) {
case sensor.type_accelerometer:
return "加速度传感器";
case sensor.type_gyroscope:
return "陀螺仪传感器";
case sensor.type_light:
return "环境光线传感器";
case sensor.type_magnetic_field:
return "电磁场传感器";
case sensor.type_orientation:
return "方向传感器";
case sensor.type_pressure:
return "压力传感器";
case sensor.type_proximity:
return "距离传感器";
case sensor.type_temperature:
return "温度传感器";
case sensor.type_gravity:
return "重场传感器";
case sensor.type_linear_acceleration:
return "线性加速度传感器";
case sensor.type_rotation_vector:
return "旋转矢量传感器";
case sensor.type_relative_humidity:
return "湿度传感器";
case sensor.type_ambient_temperature:
return "温度传感器";
case sensor.type_game_rotation_vector:
return "游戏旋转矢量传感器";
case sensor.type_step_counter:
return "计步器";
case sensor.type_geomagnetic_rotation_vector:
return "地磁旋转矢量传感器";
case sensor.type_significant_motion:
return "特殊动作触发传感器";
default:
return "未知传感器";
}
}
