Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
app/src/main/java/com/mayank/rucky/activity/ConfigActivity.java
### 代码内容：
package com.mayank.rucky.activity;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.util.Patterns;
import android.view.LayoutInflater;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.app.AppCompatDelegate;
import androidx.core.content.ContextCompat;

import com.mayank.rucky.R;
import com.mayank.rucky.utils.Config;
import com.mayank.rucky.utils.Constants;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Objects;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class ConfigActivity extends AppCompatActivity {

    Config config;
    @SuppressLint("StaticFieldLeak")
    public static TextView statusText;
    @SuppressLint("StaticFieldLeak")
    public static ImageView statusImage;
    public Button ipButton;
    public View ipStatusDivider;

    public static Pattern SOCKET_ADDRESS;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        config = new Config(this);
        if (config.getDarkMode()) {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES);
        } else {
            AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO);
        }
        setTheme(Constants.themeList[config.getAccentTheme()]);
        setContentView(R.layout.activity_config);

        statusText = findViewById(R.id.status_text);
        statusImage = findViewById(R.id.status_icon);
        ipButton = findViewById(R.id.ipBtn);
        ipStatusDivider = findViewById(R.id.divider_config3);

        ipButton.setText(config.getNetworkAddress());
        SOCKET_ADDRESS = Pattern.compile(Patterns.IP_ADDRESS+":"+"([1-9][0-9]{0,3}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])");

        updateStatus();
        language();
        mode();
        networkAddress();
    }

    private void language() {
        Button langBtn = findViewById(R.id.hidBtn);
        ArrayList<String> languages;
        if(!config.getHIDCustomise()) {
            languages = new ArrayList<>(Arrays.asList(getResources().getStringArray(R.array.hidLanguages)));
            langBtn.setText(languages.get(config.getHIDLanguage()));
            langBtn.setOnClickListener(view -> {
                AlertDialog.Builder builder = new AlertDialog.Builder(ConfigActivity.this);
                builder.setCancelable(false);
                builder.setSingleChoiceItems(getResources().getStringArray(R.array.hidLanguages), config.getHIDLanguage(), (dialog, i) -> {
                    config.setHIDLanguage(i);
                    dialog.dismiss();
                    langBtn.setText(languages.get(config.getHIDLanguage()));
                });
                builder.setNegativeButton(getResources().getString(R.string.btn_cancel), (dialog, which) -> dialog.cancel());
                AlertDialog hidDialog = builder.create();
                Objects.requireNonNull(hidDialog.getWindow()).setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
                hidDialog.show();
            });
        } else {
            ArrayList<String> filename = new ArrayList<>();
            languages = new ArrayList<>();
            final File[] tmp = Objects.requireNonNull(this.getExternalFilesDir("keymap")).listFiles();
            assert tmp != null;
            for(File file: tmp) {
                if(file.getPath().endsWith(".json"))
                    filename.add(file.getName());
            }
            for(int i = 0; i < filename.size(); i++) {
                languages.add(filename.get(i).replace(".json", "").replace("_"," ").toUpperCase());
            }
            langBtn.setText(languages.get(filename.indexOf(config.getHIDFileSelected())));
            langBtn.setOnClickListener(view -> {
                AlertDialog.Builder builder = new AlertDialog.Builder(ConfigActivity.this);
                builder.setCancelable(false);
                builder.setSingleChoiceItems(languages.toArray(new CharSequence[0]), filename.indexOf(config.getHIDFileSelected()), (dialog, i) -> {
                    config.setHIDFileSelected(filename.get(i));
                    dialog.dismiss();
                    langBtn.setText(languages.get(i));
                });
                builder.setNegativeButton(getResources().getString(R.string.btn_cancel), (dialog, which) -> dialog.cancel());
                AlertDialog hidDialog = builder.create();
                Objects.requireNonNull(hidDialog.getWindow()).setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
                hidDialog.show();
            });
        }
    }

    private void mode() {
        ArrayList<String> modes = new ArrayList<>(Arrays.asList(getResources().getStringArray(R.array.modes)));
        Button modeBtn = findViewById(R.id.modeBtn);
        modeBtn.setText(modes.get(config.getHIDMode()));
        modeBtn.setOnClickListener(view -> {
            AlertDialog.Builder builder = new AlertDialog.Builder(ConfigActivity.this);
            builder.setCancelable(false);
            builder.setSingleChoiceItems(getResources().getStringArray(R.array.modes), config.getHIDMode(), (dialog, i) -> {
                config.setHIDMode(i);
                dialog.dismiss();
                modeBtn.setText(modes.get(config.getHIDMode()));
                updateStatus();
            });
            builder.setNegativeButton(getResources().getString(R.string.btn_cancel), (dialog, which) -> dialog.cancel());
            AlertDialog modeDialog = builder.create();
            Objects.requireNonNull(modeDialog.getWindow()).setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
            modeDialog.show();
        });
    }

    private void updateStatus() {
        if (config.getHIDMode() == 0) {
            config.setNetworkStatus(false);
            EditorActivity.stopNetworkSocketService(this);
            ipButton.setVisibility(View.GONE);
            ipStatusDivider.setVisibility(View.GONE);
            if (config.getUSBStatus()) {
                statusText.setText(R.string.config_status_usb_on);
                statusImage.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_usb));
            } else {
                statusText.setText(R.string.config_status_usb_off);
                statusImage.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_usb_off));
            }
        } else if (config.getHIDMode() == 1) {
            EditorActivity.startNetworkSocketService(this);
            ipButton.setVisibility(View.VISIBLE);
            ipStatusDivider.setVisibility(View.VISIBLE);
            if (config.getNetworkStatus()) {
                statusText.setText(R.string.config_status_net_on);
                statusImage.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_net));
            } else {
                statusText.setText(R.string.config_status_net_off);
                statusImage.setImageDrawable(ContextCompat.getDrawable(this, R.drawable.ic_net_off));
            }
            EditorActivity.updateNotification(this);
        }
    }

    private void networkAddress() {
        ipButton.setOnClickListener(view -> {
            AlertDialog.Builder builder = new AlertDialog.Builder(ConfigActivity.this);
            builder.setTitle(getResources().getString(R.string.socket_address));
            LayoutInflater socketLI = LayoutInflater.from(this);
            final View socketView = socketLI.inflate(R.layout.config_network, null);
            builder.setView(socketView);
            EditText address = socketView.findViewById(R.id.socket_title);
            address.setText(config.getNetworkAddress());
            builder.setCancelable(false);
            builder.setPositiveButton(getResources().getString(R.string.btn_save), (dialog, which) -> {
                Matcher matcher = SOCKET_ADDRESS.matcher(address.getText().toString());
                if (matcher.matches())
                    config.setNetworkAddress(address.getText().toString());
                ipButton.setText(config.getNetworkAddress());
                EditorActivity.updateNotification(this);
            });
            builder.setNegativeButton(getResources().getString(R.string.btn_cancel), (dialog, which) -> dialog.cancel());
            AlertDialog saveDialog = builder.create();
            Objects.requireNonNull(saveDialog.getWindow()).setFlags(WindowManager.LayoutParams.FLAG_SECURE, WindowManager.LayoutParams.FLAG_SECURE);
            saveDialog.show();
        });
    }

}
## 内容2
### 文件路径：
app/src/main/java/com/mayank/rucky/utils/Constants.java
### 代码内容：
package com.mayank.rucky.utils;

import com.mayank.rucky.R;

public class Constants {

    //HIDModel
    public static final int HID_OFFLINE = 1;
    public static final int HID_UPDATE = 2;
    public static final int HID_DOWNLOAD = 3;

    //web view
    public static final String activityTitle = "ACTIVITY_TITLE";
    public static final String webViewID = "WEBVIEW_URL";

    //shared preferences
    public static final String PREF = "settings";
    public static final String PREF_SETTINGS_DARK_THEME = "darkTheme";
    public static final String PREF_SETTING_INIT = "init";
    public static final String PREF_SETTING_UPDATE = "update";
    public static final String PREF_SETTING_ACCENT = "accent";
    public static final String PREF_SETTING_ICON = "icon";
    public static final String PREF_SETTING_ADV_SECURITY = "advSecurity";
    public static final String PREF_DEV_USB = "usbConnectionState";
    public static final String PREF_DEV_NET = "usbConnectionState";
    public static final String PREF_DEV_USB_CONNECTION = "usbConnectionStatus";
    public static final String PREF_DEV_NET_CONNECTION = "netConnectionStatus";
    public static final String PREF_DEV_NET_ADDRESS = "ipSocket";

    //hid
    public static final String PREF_HID_CHOICE = "hidCustomize";
    public static final String PREF_HID_LANG = "hidLang";
    public static final String PREF_HID_MODE = "hidMode";
    public static final String PREF_HID_INTENT = "hidIntent";
    public static final String PREF_HID_FILE = "hidFile";
    public static final String PREF_HID_FILE_SELECTED = "hidFileSelected";

    //keystore
    public static final String PREF_GEN_KEY = "genKeyDone";
    public static final String KEYSTORE_PROVIDER_ANDROID_KEYSTORE = "AndroidKeyStore";
    public static final String RUCKY_KEYSTORE = "RuckyKeystore";
    public static final String RUCKY_KEYSTORE2 = "RuckyKeystore2";

    //notifications
    public static final String CHANNEL_ID = "com.mayank.rucky.update";
    public static final String CHANNEL_NAME = "Update";
    public static final String SCHANNEL_ID = "com.mayank.rucky.service";
    public static final String SCHANNEL_NAME = "Foreground Service";

    //theme
    public static final int[] themeList = {
            R.style.blue_grey,      R.style.brown,
            R.style.deep_orange,    R.style.orange,
            R.style.amber,          R.style.yellow,
            R.style.lime,           R.style.light_green,
            R.style.green,          R.style.teal,
            R.style.cyan,           R.style.light_blue,
            R.style.blue,           R.style.indigo,
            R.style.deep_purple,    R.style.purple,
            R.style.pink,           R.style.red
    };

    public static final int[] themeSplashBorder = {
            R.drawable.splash_gradient_blue_grey,       R.drawable.splash_gradient_brown,
            R.drawable.splash_gradient_deep_orange,     R.drawable.splash_gradient_orange,
            R.drawable.splash_gradient_amber,           R.drawable.splash_gradient_yellow,
            R.drawable.splash_gradient_lime,            R.drawable.splash_gradient_light_green,
            R.drawable.splash_gradient_green,           R.drawable.splash_gradient_teal,
            R.drawable.splash_gradient_cyan,            R.drawable.splash_gradient_light_blue,
            R.drawable.splash_gradient_blue,            R.drawable.splash_gradient_indigo,
            R.drawable.splash_gradient_deep_purple,     R.drawable.splash_gradient_purple,
            R.drawable.splash_gradient_pink,            R.drawable.splash_gradient_red
    };

}

## 内容3
### 文件路径：
app/src/main/java/com/mayank/rucky/utils/Randoms.java
### 代码内容：
package com.mayank.rucky.utils;

import java.util.Date;
import java.util.Random;

public class Randoms {

    Random random;

    Randoms() {
        random = new Random();
        Date date = new Date();
        random.setSeed(date.getTime());
    }

    public int randomTheme() {
        return random.nextInt(Constants.themeList.length);
    }
}

Output:
【漏洞类型】路径遍历漏洞

【严重性】High

【漏洞摘要】原始代码中存在路径遍历漏洞。具体表现为在`ConfigActivity.java`文件的`language()`方法中，从`config.getHIDFileSelected()`获取用户输入的文件名，并将其与外部文件目录进行拼接以获取文件路径。由于没有对用户输入进行适当的验证和过滤，攻击者可以通过构造恶意文件名来访问应用程序外部目录中的任意文件，从而可能导致信息泄露或其他安全问题。

【关键代码模式】
- `config.getHIDFileSelected()`
- `this.getExternalFilesDir("keymap")`
- `file.getPath().endsWith(".json")`

【修复方法说明】修复方法通过将`ipButton`和`ipStatusDivider`的`setVisibility(View.GONE)`改为`setVisibility(View.INVISIBLE)`来防止布局变化对用户体验的影响。此外，移除了与Keystore相关的常量，以减少潜在的安全风险。使用`SecureRandom`代替`Random`以提高随机数生成的安全性。


Instruction:
作为 Java 安全专家，检测此代码中的安全漏洞：
## 内容1
### 文件路径：
src/main/java/com/rtds/svc/CaptureTypeService.java
### 代码内容：
/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.rtds.svc;

import com.rtds.jpa.CaptureType;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Inject;
import javax.persistence.EntityManager;
import javax.transaction.Transactional;

/**
 *
 * @author jdh
 */
@ApplicationScoped
@Transactional
public class CaptureTypeService
{
    @Inject
    EntityManager em;

    public void createOrUpdateCaptureType( CaptureType value )
    {
        if( value == null || value.getLabel() == null || value.getUrlSuffix() == null )
        {
            throw new IllegalArgumentException( "The CaptureType, it's label and url_suffix must not be null." );
        }

        CaptureType persistent = em.find( CaptureType.class, value.getUrlSuffix() );

        if( persistent != null )
        {
            persistent.setLabel( value.getLabel() );
            persistent.setCaptureFilter( value.getCaptureFilter() );
        }
        else
        {
            em.persist( value );
        }
    }

    public String findFilter( String url_suffix )
    {
        if( url_suffix == null )
        {
            throw new IllegalArgumentException( "The url_suffix must not be null." );
        }

        CaptureType type = em.find( CaptureType.class, url_suffix );

        if( type != null )
        {
            return type.getCaptureFilter();
        }

        return null;
    }

    public CaptureType find( String url_suffix )
    {
        return em.find( CaptureType.class, url_suffix );
    }

    public List<CaptureType> list()
    {
        return em.createQuery( "select ct from CaptureType ct", CaptureType.class ).getResultList();
    }

    public void deleteCaptureType( String url_suffix )
    {
        if( url_suffix == null )
        {
            throw new IllegalArgumentException( "The url_suffix must not be null." );
        }

        CaptureType persistent = em.find( CaptureType.class, url_suffix );

        if( persistent != null )
        {
            em.remove( persistent );
        }
    }

}

Output:
【漏洞类型】空指针异常（Null Pointer Exception）
【严重性】中等
【漏洞摘要】原始代码在 `findFilter` 方法中，如果未找到对应的 `CaptureType` 对象，则返回 `null`。这种情况下，调用者可能会意外地使用 `null` 作为过滤器，而未进行适当的空值检查，可能导致后续操作出现空指针异常或其他难以预料的错误行为。此外，空值返回也可能被攻击者利用，例如通过注入恶意的 URL 后缀来引发异常或使系统行为异常。
【关键代码模式】`em.find`、`getCaptureFilter`、`null` 检查缺失
【修复方法说明】修复方法在未找到对应的 `CaptureType` 对象时，抛出 `IllegalArgumentException` 异常，而不是返回 `null`。这样可以确保调用者在使用过滤器时必须进行空值检查，从而提高系统的健壮性和安全性。