Allow custom user agent

app/src/main/java/com/hippo/ehviewer/Settings.kt

@@ -23,6 +23,7 @@ import com.hippo.ehviewer.EhApplication.Companion.application
 import com.hippo.ehviewer.client.data.FavListUrlBuilder
 import com.hippo.ehviewer.ui.scene.GalleryListScene
 import com.hippo.glgallery.GalleryView
+import com.hippo.okhttp.ChromeRequestBuilder.Companion.CHROME_USER_AGENT
 import com.hippo.unifile.UniFile
 import com.hippo.yorozuya.NumberUtils
 import java.util.Locale
@@ -177,6 +178,7 @@ object Settings {
     private const val DEFAULT_PROXY_PORT = -1
     private const val KEY_BUILT_IN_HOSTS = "built_in_hosts_2"
     private const val DEFAULT_BUILT_IN_HOSTS = false
+    private const val KEY_USER_AGENT = "user_agent"
     private const val KEY_APP_LINK_VERIFY_TIP = "app_link_verify_tip"
     private const val DEFAULT_APP_LINK_VERIFY_TIP = false
 
@@ -664,6 +666,12 @@ object Settings {
     val builtInHosts: Boolean
         get() = getBoolean(KEY_BUILT_IN_HOSTS, DEFAULT_BUILT_IN_HOSTS)
 
+    val userAgent: String?
+        get() = getString(KEY_USER_AGENT, CHROME_USER_AGENT)
+    fun putUserAgent(value: String?) {
+        putString(KEY_USER_AGENT, value)
+    }
+
     val appLinkVerifyTip: Boolean
         get() = getBoolean(KEY_APP_LINK_VERIFY_TIP, DEFAULT_APP_LINK_VERIFY_TIP)
     fun putAppLinkVerifyTip(value: Boolean) {

app/src/main/java/com/hippo/ehviewer/preference/UserAgentPreference.kt

@@ -0,0 +1,85 @@
+/*
+ * Copyright 2024 Moedog
+ *
+ * This file is part of EhViewer
+ *
+ * EhViewer is free software: you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * EhViewer 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along with EhViewer.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.hippo.ehviewer.preference
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.DialogInterface
+import android.util.AttributeSet
+import android.view.KeyEvent
+import android.view.LayoutInflater
+import android.view.View
+import android.widget.Button
+import android.widget.EditText
+import android.widget.TextView
+import android.widget.TextView.OnEditorActionListener
+import androidx.appcompat.app.AlertDialog
+import com.hippo.ehviewer.R
+import com.hippo.ehviewer.Settings
+import com.hippo.okhttp.ChromeRequestBuilder.Companion.CHROME_USER_AGENT
+import com.hippo.preference.DialogPreference
+
+@SuppressLint("InflateParams")
+class UserAgentPreference(
+    context: Context,
+    attrs: AttributeSet? = null,
+) : DialogPreference(context, attrs),
+    View.OnClickListener,
+    OnEditorActionListener {
+    private lateinit var mDialog: AlertDialog
+    private lateinit var mButton: Button
+    private var mUserAgent: String? = Settings.userAgent
+    private val view: View =
+        LayoutInflater.from(context).inflate(R.layout.dialog_edittext_builder, null)
+    private val editText: EditText = view.findViewById(R.id.edit_text)
+
+    init {
+        updateSummary()
+    }
+
+    private fun updateSummary() {
+        summary = mUserAgent
+    }
+
+    override fun onCreateDialogView(): View {
+        return view
+    }
+
+    override fun onDialogCreated(dialog: AlertDialog) {
+        super.onDialogCreated(dialog)
+        mDialog = dialog
+        mButton = dialog.getButton(DialogInterface.BUTTON_POSITIVE)
+        mButton.setOnClickListener(this)
+        editText.isSingleLine = false
+        editText.setText(mUserAgent)
+        editText.setSelection(editText.text.length)
+        editText.setOnEditorActionListener(this)
+    }
+
+    override fun onClick(v: View) {
+        mUserAgent = editText.text.toString().trim().ifBlank { null } ?: CHROME_USER_AGENT
+        Settings.putUserAgent(mUserAgent)
+        updateSummary()
+        mDialog.dismiss()
+    }
+
+    override fun onEditorAction(v: TextView?, p1: Int, event: KeyEvent?): Boolean {
+        mButton.performClick()
+        return true
+    }
+}

app/src/main/java/com/hippo/okhttp/ChromeRequestBuilder.kt

@@ -15,20 +15,21 @@
  */
 package com.hippo.okhttp
 
+import com.hippo.ehviewer.Settings
 import okhttp3.Request
 
 open class ChromeRequestBuilder(url: String) : Request.Builder() {
     companion object {
         const val CHROME_USER_AGENT =
-            "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Mobile Safari/537.36"
+            "Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Mobile Safari/537.36"
         private const val CHROME_ACCEPT =
-            "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"
+            "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9"
         private const val CHROME_ACCEPT_LANGUAGE = "en-US,en;q=0.9"
     }
 
     init {
         this.url(url)
-        this.addHeader("User-Agent", CHROME_USER_AGENT)
+        this.addHeader("User-Agent", Settings.userAgent!!)
         this.addHeader("Accept", CHROME_ACCEPT)
         this.addHeader("Accept-Language", CHROME_ACCEPT_LANGUAGE)
     }

app/src/main/res/values/strings.xml

@@ -543,6 +543,7 @@
     <string name="settings_advanced_built_in_hosts_summary">Apply the built-in host-to-IP mapping provided by the app.\nIt can be overridden by custom hosts.txt</string>
     <string name="settings_advanced_custom_hosts_title">Custom hosts.txt</string>
     <string name="settings_advanced_custom_hosts_summary">Map hostnames to IP addresses.\nIt can override built-in hosts.txt</string>
+    <string name="settings_advanced_user_agent_title" translatable="false">User Agent</string>
     <string name="settings_advanced_backup_favorite">Backup favorite list</string>
     <string name="settings_advanced_backup_favorite_summary">Backup remote favorite list to local</string>
     <string name="settings_advanced_backup_favorite_start">Backing up favorite list %s</string>

app/src/main/res/xml/advanced_settings.xml

@@ -73,6 +73,13 @@
         android:title="@string/settings_advanced_custom_hosts_title"
         app:iconSpaceReserved="false" />
 
+    <com.hippo.ehviewer.preference.UserAgentPreference
+        android:key="user_agent"
+        android:title="@string/settings_advanced_user_agent_title"
+        app:iconSpaceReserved="false"
+        app:negativeButtonText="@android:string/cancel"
+        app:positiveButtonText="@android:string/ok" />
+
     <Preference
         android:key="backup_favorite"
         android:summary="@string/settings_advanced_backup_favorite_summary"