feat: add useless code

Signed-off-by: ACh Sulfate <xenonhydride@gmail.com>

app/src/main/cpp/qauxv_core/Natives.cpp

@@ -933,3 +933,15 @@ Java_io_github_qauxv_util_Natives_lseek(JNIEnv *env, jclass, jint fd, jlong offs
     }
     return (jlong) result;
 }
+
+extern "C" JNIEXPORT jint JNICALL
+Java_cc_ioctl_util_JunkCodeUtils_getJunkCode(JNIEnv *, jclass, jint jtc) {
+    auto tc = uint32_t(jtc);
+    const char *magic = "mIplOkwgxe3bzGc6g9K1BNJlXbuNmM+kYGWuoFGDOAZD1vHBEROCj+AN2TmBKXc0wEDLXgE+XgxL";
+    auto magic_len = strlen(magic);
+    uint32_t a32 = update_adler32(tc, reinterpret_cast<const uint8_t *>(magic), magic_len);
+    uint32_t o = a32 & 0xf;
+    // code should be in the range [0, 999999]
+    uint32_t code = (a32 >> o) % 1000000;
+    return jint(code);
+}

app/src/main/java/cc/ioctl/fragment/JunkCodeFragment.kt

@@ -0,0 +1,104 @@
+/*
+ * QAuxiliary - An Xposed module for QQ/TIM
+ * Copyright (C) 2019-2022 qwq233@qwq2333.top
+ * https://github.com/cinit/QAuxiliary
+ *
+ * This software is non-free but opensource software: you can redistribute it
+ * and/or modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version and our eula as published
+ * by QAuxiliary contributors.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * and eula along with this software.  If not, see
+ * <https://www.gnu.org/licenses/>
+ * <https://github.com/cinit/QAuxiliary/blob/master/LICENSE.md>.
+ */
+
+package cc.ioctl.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.annotation.UiThread
+import androidx.core.view.doOnLayout
+import cc.ioctl.util.JunkCodeUtils
+import io.github.qauxv.databinding.FragmentJunkCodeBinding
+import io.github.qauxv.fragment.BaseRootLayoutFragment
+import xyz.nextalone.util.SystemServiceUtils
+import java.text.SimpleDateFormat
+
+class JunkCodeFragment : BaseRootLayoutFragment(), Runnable {
+
+    override fun getTitle(): String = "动态验证码"
+
+    private val mTimeFormat = SimpleDateFormat("HH:mm:ss", java.util.Locale.ROOT)
+    private var mLasttc: Int = 0
+    private var mBinding: FragmentJunkCodeBinding? = null
+
+    override fun doOnCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
+        mBinding = FragmentJunkCodeBinding.inflate(inflater, container, false).apply {
+            junkCodeCopy.setOnClickListener {
+                val code = getCodeForTime(System.currentTimeMillis())
+                SystemServiceUtils.copyToClipboard(it.context, code)
+                Toast.makeText(it.context, "已复制到剪贴板", Toast.LENGTH_SHORT).show()
+            }
+        }
+        rootLayoutView = mBinding?.root
+        return mBinding!!.root
+    }
+
+    @UiThread
+    private fun updateStatus(binding: FragmentJunkCodeBinding) {
+        val now = System.currentTimeMillis()
+        val tc = (now / 1000L / 30L).toInt()
+        val expireTime = (tc + 1) * 30L * 1000L
+        val code = JunkCodeUtils.getJunkCode(tc)
+        val timeRemainingMs = expireTime - now
+        val remainPercentage = timeRemainingMs.toFloat() / (30L * 1000L).toFloat()
+        if (tc != mLasttc) {
+            binding.junkCodeCode.text = code.toString()
+        }
+        binding.junkCodeInvalidateTime.text = "过期时间: " + mTimeFormat.format(expireTime) +
+            " (剩余 " + (timeRemainingMs / 1000L).coerceAtLeast(1) + " 秒)"
+        mLasttc = tc
+        binding.junkCodeProgressBar.layoutParams.apply {
+            val parentWidth = (binding.junkCodeProgressBar.parent as ViewGroup).width
+            width = (parentWidth * remainPercentage).toInt()
+        }
+        binding.junkCodeProgressBar.requestLayout()
+    }
+
+    override fun run() {
+        if (isResumed) {
+            mBinding?.let {
+                updateStatus(it)
+                it.junkCodeInvalidateTime.postDelayed(this, 1000L)
+            }
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        mBinding?.let { binding ->
+            binding.rootMainLayout.doOnLayout {
+                updateStatus(binding)
+            }
+            // schedule a job to update the time every second
+            binding.junkCodeInvalidateTime.postDelayed(this, 1000L)
+        }
+    }
+
+    private fun getCodeForTime(time: Long): String {
+        val tc = (time / 1000L / 30L).toInt()
+        val code = JunkCodeUtils.getJunkCode(tc)
+        return code.toString()
+    }
+}

app/src/main/java/cc/ioctl/util/JunkCodeUtils.java

@@ -0,0 +1,35 @@
+/*
+ * QAuxiliary - An Xposed module for QQ/TIM
+ * Copyright (C) 2019-2022 qwq233@qwq2333.top
+ * https://github.com/cinit/QAuxiliary
+ *
+ * This software is non-free but opensource software: you can redistribute it
+ * and/or modify it under the terms of the GNU Affero General Public License
+ * as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version and our eula as published
+ * by QAuxiliary contributors.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * and eula along with this software.  If not, see
+ * <https://www.gnu.org/licenses/>
+ * <https://github.com/cinit/QAuxiliary/blob/master/LICENSE.md>.
+ */
+
+package cc.ioctl.util;
+
+public class JunkCodeUtils {
+
+    private JunkCodeUtils() {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Result code should be in the range [0, 999999]
+     */
+    public static native int getJunkCode(int tc);
+}

app/src/main/java/io/github/qauxv/activity/ConfigV2Activity.java

@@ -42,6 +42,7 @@ import androidx.annotation.NonNull;
 import androidx.appcompat.app.AlertDialog;
 import androidx.appcompat.app.AppCompatDelegate;
 import androidx.core.content.res.ResourcesCompat;
+import cc.ioctl.fragment.JunkCodeFragment;
 import cc.ioctl.util.HostInfo;
 import io.github.qauxv.BuildConfig;
 import io.github.qauxv.R;
@@ -65,6 +66,7 @@ public class ConfigV2Activity extends AppCompatTransferActivity {
 
     private static final String ALIAS_ACTIVITY_NAME = "io.github.qauxv.activity.ConfigV2ActivityAlias";
     private MainV2NormalBinding mainV2Binding = null;
+    private boolean mHintLongPressed = false;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -101,6 +103,14 @@ public class ConfigV2Activity extends AppCompatTransferActivity {
         HolidayHelper.setup(this);
         updateActivationStatus();
         SyncUtils.postDelayed(3000, this::updateActivationStatus);
+        mainV2Binding.mainV2Help.setOnLongClickListener(v -> {
+            if (!mHintLongPressed) {
+                mHintLongPressed = true;
+            } else {
+                SettingsUiFragmentHostActivity.startActivityForFragment(this, JunkCodeFragment.class, null);
+            }
+            return true;
+        });
     }
 
     public void updateActivationStatus() {

app/src/main/res/layout/fragment_junk_code.xml

@@ -0,0 +1,116 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~ QAuxiliary - An Xposed module for QQ/TIM
+  ~ Copyright (C) 2019-2022 qwq233@qwq2333.top
+  ~ https://github.com/cinit/QAuxiliary
+  ~
+  ~ This software is non-free but opensource software: you can redistribute it
+  ~ and/or modify it under the terms of the GNU Affero General Public License
+  ~ as published by the Free Software Foundation; either
+  ~ version 3 of the License, or any later version and our eula as published
+  ~ by QAuxiliary contributors.
+  ~
+  ~ This software is distributed in the hope that it will be useful,
+  ~ but WITHOUT ANY WARRANTY; without even the implied warranty of
+  ~ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+  ~ Affero General Public License for more details.
+  ~
+  ~ You should have received a copy of the GNU Affero General Public License
+  ~ and eula along with this software.  If not, see
+  ~ <https://www.gnu.org/licenses/>
+  ~ <https://github.com/cinit/QAuxiliary/blob/master/LICENSE.md>.
+  -->
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:fadeScrollbars="true"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:id="@+id/rootMainLayout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="top|center_horizontal"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="start"
+            android:orientation="horizontal">
+
+            <View
+                android:id="@+id/junkCode_progressBar"
+                android:layout_width="match_parent"
+                android:layout_height="4dp"
+                android:background="?attr/themeColor" />
+
+        </LinearLayout>
+
+        <TextView
+            android:id="@+id/junkCode_hint"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="10dp"
+            android:paddingBottom="10dp"
+            android:paddingRight="20dp"
+            android:paddingLeft="20dp"
+            android:gravity="start"
+            android:text="此动态验证码每 30 秒刷新一次，目前没有任何作用。"
+            android:textColor="@color/secondTextColor"
+            android:textSize="14sp" />
+
+        <TextView
+            android:id="@+id/junkCode_code"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="10dp"
+            android:fontFamily="monospace"
+            android:gravity="center"
+            android:text="******"
+            android:textColor="@color/firstTextColor"
+            android:textIsSelectable="true"
+            android:textSize="40dp"
+            tools:ignore="SpUsage" />
+
+        <RelativeLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="10dp"
+            android:gravity="center_vertical">
+
+            <Button
+                android:id="@+id/junkCode_copy"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentEnd="true"
+                android:text="复制" />
+
+            <TextView
+                android:id="@+id/junkCode_invalidateTime"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_alignParentStart="true"
+                android:padding="10dp"
+                android:gravity="start"
+                android:text="过期时间: HH:MM:SS"
+                android:textColor="@color/secondTextColor"
+                android:textSize="14sp" />
+
+        </RelativeLayout>
+
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="10dp"
+            android:paddingBottom="10dp"
+            android:paddingLeft="20dp"
+            android:paddingRight="20dp"
+            android:gravity="start"
+            android:text="您可以将此动态验证码分享给任何人，因为它与您的账号或设备无关。\n相同版本的模块在任何设备上在同一时间总是显示相同的动态验证码。"
+            android:textColor="@color/secondTextColor"
+            android:textSize="14sp" />
+
+    </LinearLayout>
+
+</ScrollView>