Improvements and fixes (#96)

Improvements and fixes:
- Added Hosts to UI editor
- Allowed not to specify DNS
- Changed the level of saved logs to Debug
- Fixed bug with Reset button

app/build.gradle.kts

@@ -12,7 +12,7 @@ android {
         minSdk = 21
         targetSdk = 34
         versionCode = 8
-        versionName = "1.1.0-beta"
+        versionName = "1.1.0"
 
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
 

app/src/main/cpp/main.h

@@ -13,6 +13,8 @@ void clear_params(void);
 
 char *ftob(const char *str, ssize_t *sl);
 
+char *parse_cform(const char *str, ssize_t *size);
+
 struct mphdr *parse_hosts(char *buffer, size_t size);
 
 int parse_offset(struct part *part, const char *str);

app/src/main/cpp/native-lib.c

@@ -12,11 +12,17 @@
 #include "utils.h"
 
 const enum demode DESYNC_METHODS[] = {
-        DESYNC_NONE,
+    DESYNC_NONE,
-        DESYNC_SPLIT,
+    DESYNC_SPLIT,
-        DESYNC_DISORDER,
+    DESYNC_DISORDER,
-        DESYNC_FAKE,
+    DESYNC_FAKE,
-        DESYNC_OOB,
+    DESYNC_OOB,
+};
+
+enum hosts_mode {
+    HOSTS_DISABLE,
+    HOSTS_BLACKLIST,
+    HOSTS_WHITELIST,
 };
 
 JNIEXPORT jint JNI_OnLoad(
@@ -81,8 +87,9 @@ Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniCreateSocket(
         jboolean host_remove_spaces,
         jboolean tls_record_split,
         jint tls_record_split_position,
-        jboolean tls_record_split_at_sni) {
+        jboolean tls_record_split_at_sni,
-
+        jint hosts_mode,
+        jstring hosts) {
     struct sockaddr_ina s;
 
     const char *address = (*env)->GetStringUTFChars(env, ip, 0);
@@ -112,6 +119,29 @@ Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniCreateSocket(
         }
     }
 
+    if (hosts_mode == HOSTS_WHITELIST) {
+        struct desync_params *dp = add(
+                (void *) &params.dp,
+                &params.dp_count,
+                sizeof(struct desync_params)
+        );
+        if (!dp) {
+            uniperror("add");
+            reset_params();
+            return -1;
+        }
+
+        const char *str = (*env)->GetStringUTFChars(env, hosts, 0);
+        dp->file_ptr = parse_cform(str, &dp->file_size);
+        (*env)->ReleaseStringUTFChars(env, hosts, str);
+        dp->hosts = parse_hosts(dp->file_ptr, dp->file_size);
+        if (!dp->hosts) {
+            perror("parse_hosts");
+            clear_params();
+            return -1;
+        }
+    }
+
     struct desync_params *dp = add(
             (void *) &params.dp,
             &params.dp_count,
@@ -123,6 +153,18 @@ Java_io_github_dovecoteescapee_byedpi_core_ByeDpiProxy_jniCreateSocket(
         return -1;
     }
 
+    if (hosts_mode == HOSTS_BLACKLIST) {
+        const char *str = (*env)->GetStringUTFChars(env, hosts, 0);
+        dp->file_ptr = parse_cform(str, &dp->file_size);
+        (*env)->ReleaseStringUTFChars(env, hosts, str);
+        dp->hosts = parse_hosts(dp->file_ptr, dp->file_size);
+        if (!dp->hosts) {
+            perror("parse_hosts");
+            clear_params();
+            return -1;
+        }
+    }
+
     dp->ttl = fake_ttl;
     dp->proto =
             IS_HTTP * desync_http |

app/src/main/java/io/github/dovecoteescapee/byedpi/activities/MainActivity.kt

@@ -38,7 +38,7 @@ class MainActivity : AppCompatActivity() {
         private fun collectLogs(): String? =
             try {
                 Runtime.getRuntime()
-                    .exec("logcat *:I -d")
+                    .exec("logcat *:D -d")
                     .inputStream.bufferedReader()
                     .use { it.readText() }
             } catch (e: Exception) {

app/src/main/java/io/github/dovecoteescapee/byedpi/activities/SettingsActivity.kt

@@ -4,6 +4,7 @@ import android.os.Bundle
 import android.view.Menu
 import android.view.MenuItem
 import androidx.appcompat.app.AppCompatActivity
+import androidx.fragment.app.FragmentManager
 import io.github.dovecoteescapee.byedpi.R
 import io.github.dovecoteescapee.byedpi.fragments.MainSettingsFragment
 import io.github.dovecoteescapee.byedpi.utility.getPreferences
@@ -35,6 +36,7 @@ class SettingsActivity : AppCompatActivity() {
         R.id.action_reset_settings -> {
             getPreferences().edit().clear().apply()
 
+            supportFragmentManager.popBackStack(null, FragmentManager.POP_BACK_STACK_INCLUSIVE)
             supportFragmentManager
                 .beginTransaction()
                 .replace(R.id.settings, MainSettingsFragment())

app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxy.kt

@@ -76,6 +76,8 @@ class ByeDpiProxy {
                 tlsRecordSplit = preferences.tlsRecordSplit,
                 tlsRecordSplitPosition = preferences.tlsRecordSplitPosition,
                 tlsRecordSplitAtSni = preferences.tlsRecordSplitAtSni,
+                hostsMode = preferences.hostsMode.ordinal,
+                hosts = preferences.hosts
             )
         }
 
@@ -104,6 +106,8 @@ class ByeDpiProxy {
         tlsRecordSplit: Boolean,
         tlsRecordSplitPosition: Int,
         tlsRecordSplitAtSni: Boolean,
+        hostsMode: Int,
+        hosts: String?
     ): Int
 
     private external fun jniStartProxy(fd: Int): Int

app/src/main/java/io/github/dovecoteescapee/byedpi/core/ByeDpiProxyPreferences.kt

@@ -55,6 +55,8 @@ class ByeDpiProxyUIPreferences(
     tlsRecordSplit: Boolean? = null,
     tlsRecordSplitPosition: Int? = null,
     tlsRecordSplitAtSni: Boolean? = null,
+    hostsMode: HostsMode? = null,
+    hosts: String? = null,
 ) : ByeDpiProxyPreferences {
     val ip: String = ip ?: "127.0.0.1"
     val port: Int = port ?: 1080
@@ -78,6 +80,12 @@ class ByeDpiProxyUIPreferences(
     val tlsRecordSplit: Boolean = tlsRecordSplit ?: false
     val tlsRecordSplitPosition: Int = tlsRecordSplitPosition ?: 0
     val tlsRecordSplitAtSni: Boolean = tlsRecordSplitAtSni ?: false
+    val hostsMode: HostsMode =
+        if (hosts?.isBlank() != false) HostsMode.Disable
+        else hostsMode ?: HostsMode.Disable
+    val hosts: String? =
+        if (this.hostsMode == HostsMode.Disable) null
+        else hosts?.trim()
 
     constructor(preferences: SharedPreferences) : this(
         ip = preferences.getString("byedpi_proxy_ip", null),
@@ -103,6 +111,15 @@ class ByeDpiProxyUIPreferences(
         tlsRecordSplitPosition = preferences.getString("byedpi_tlsrec_position", null)
             ?.toIntOrNull(),
         tlsRecordSplitAtSni = preferences.getBoolean("byedpi_tlsrec_at_sni", false),
+        hostsMode = preferences.getString("byedpi_hosts_mode", null)
+            ?.let { HostsMode.fromName(it) },
+        hosts = preferences.getString("byedpi_hosts_mode", null)?.let {
+            when (HostsMode.fromName(it)) {
+                HostsMode.Blacklist -> preferences.getString("byedpi_hosts_blacklist", null)
+                HostsMode.Whitelist -> preferences.getString("byedpi_hosts_whitelist", null)
+                else -> null
+            }
+        }
     )
 
     enum class DesyncMethod {
@@ -125,4 +142,21 @@ class ByeDpiProxyUIPreferences(
             }
         }
     }
+
+    enum class HostsMode {
+        Disable,
+        Blacklist,
+        Whitelist;
+
+        companion object {
+            fun fromName(name: String): HostsMode {
+                return when (name) {
+                    "disable" -> Disable
+                    "blacklist" -> Blacklist
+                    "whitelist" -> Whitelist
+                    else -> throw IllegalArgumentException("Unknown hosts mode: $name")
+                }
+            }
+        }
+    }
 }

app/src/main/java/io/github/dovecoteescapee/byedpi/core/TProxyService.kt

@@ -1,4 +1,4 @@
-package io.github.dovecoteescapee.byedpi.services
+package io.github.dovecoteescapee.byedpi.core
 
 object TProxyService {
     init {

app/src/main/java/io/github/dovecoteescapee/byedpi/fragments/ByeDpiUISettingsFragment.kt

@@ -6,6 +6,7 @@ import androidx.preference.*
 import io.github.dovecoteescapee.byedpi.R
 import io.github.dovecoteescapee.byedpi.core.ByeDpiProxyUIPreferences
 import io.github.dovecoteescapee.byedpi.core.ByeDpiProxyUIPreferences.DesyncMethod.*
+import io.github.dovecoteescapee.byedpi.core.ByeDpiProxyUIPreferences.HostsMode.*
 import io.github.dovecoteescapee.byedpi.utility.*
 
 class ByeDpiUISettingsFragment : PreferenceFragmentCompat() {
@@ -65,7 +66,11 @@ class ByeDpiUISettingsFragment : PreferenceFragmentCompat() {
         val desyncMethod =
             findPreferenceNotNull<ListPreference>("byedpi_desync_method")
                 .value.let { ByeDpiProxyUIPreferences.DesyncMethod.fromName(it) }
+        val hostsMode = findPreferenceNotNull<ListPreference>("byedpi_hosts_mode")
+            .value.let { ByeDpiProxyUIPreferences.HostsMode.fromName(it) }
 
+        val hostsBlacklist = findPreferenceNotNull<EditTextPreference>("byedpi_hosts_blacklist")
+        val hostsWhitelist = findPreferenceNotNull<EditTextPreference>("byedpi_hosts_whitelist")
         val desyncHttp = findPreferenceNotNull<CheckBoxPreference>("byedpi_desync_http")
         val desyncHttps = findPreferenceNotNull<CheckBoxPreference>("byedpi_desync_https")
         val desyncUdp = findPreferenceNotNull<CheckBoxPreference>("byedpi_desync_udp")
@@ -83,6 +88,23 @@ class ByeDpiUISettingsFragment : PreferenceFragmentCompat() {
             findPreferenceNotNull<EditTextPreference>("byedpi_tlsrec_position")
         val splitTlsRecAtSni = findPreferenceNotNull<CheckBoxPreference>("byedpi_tlsrec_at_sni")
 
+        when (hostsMode) {
+            Disable -> {
+                hostsBlacklist.isVisible = false
+                hostsWhitelist.isVisible = false
+            }
+
+            Blacklist -> {
+                hostsBlacklist.isVisible = true
+                hostsWhitelist.isVisible = false
+            }
+
+            Whitelist -> {
+                hostsBlacklist.isVisible = false
+                hostsWhitelist.isVisible = true
+            }
+        }
+
         when (desyncMethod) {
             None -> {
                 desyncHttp.isVisible = false

app/src/main/java/io/github/dovecoteescapee/byedpi/fragments/MainSettingsFragment.kt

@@ -38,7 +38,9 @@ class MainSettingsFragment : PreferenceFragmentCompat() {
     override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
         setPreferencesFromResource(R.xml.main_settings, rootKey)
 
-        setEditTextPreferenceListener("dns_ip") { checkIp(it) }
+        setEditTextPreferenceListener("dns_ip") {
+            it.isBlank() || checkIp(it)
+        }
 
         findPreferenceNotNull<DropDownPreference>("app_theme")
             .setOnPreferenceChangeListener { _, newValue ->

app/src/main/java/io/github/dovecoteescapee/byedpi/services/ByeDpiVpnService.kt

@@ -12,6 +12,7 @@ import io.github.dovecoteescapee.byedpi.R
 import io.github.dovecoteescapee.byedpi.activities.MainActivity
 import io.github.dovecoteescapee.byedpi.core.ByeDpiProxy
 import io.github.dovecoteescapee.byedpi.core.ByeDpiProxyPreferences
+import io.github.dovecoteescapee.byedpi.core.TProxyService
 import io.github.dovecoteescapee.byedpi.data.*
 import io.github.dovecoteescapee.byedpi.utility.*
 import kotlinx.coroutines.Dispatchers
@@ -268,6 +269,7 @@ class ByeDpiVpnService : LifecycleVpnService() {
         )
 
     private fun createBuilder(dns: String): Builder {
+        Log.d(TAG, "DNS: $dns")
         val builder = Builder()
         builder.setSession("ByeDPI")
         builder.setConfigureIntent(
@@ -282,7 +284,9 @@ class ByeDpiVpnService : LifecycleVpnService() {
         builder.addAddress("10.10.10.10", 32)
         builder.addRoute("0.0.0.0", 0)
         builder.addRoute("0:0:0:0:0:0:0:0", 0)
-        builder.addDnsServer(dns)
+        if (dns.isNotBlank()) {
+            builder.addDnsServer(dns)
+        }
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
             builder.setMetered(false)
         }

app/src/main/jni/Application.mk

@@ -16,6 +16,6 @@
 APP_OPTIM := release
 APP_PLATFORM := android-21
 APP_ABI := armeabi-v7a arm64-v8a x86 x86_64
-APP_CFLAGS := -O3 -DPKGNAME=io/github/dovecoteescapee/byedpi/services
+APP_CFLAGS := -O3 -DPKGNAME=io/github/dovecoteescapee/byedpi/core
 APP_CPPFLAGS := -O3 -std=c++11
 NDK_TOOLCHAIN_VERSION := clang

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

@@ -34,4 +34,15 @@
         <item name="fake">fake</item>
         <item name="oob">oob</item>
     </array>
+
+    <array name="byedpi_hosts_modes">
+        <item name="disable">Disable</item>
+        <item name="blacklist">Blacklist</item>
+        <item name="whitelist">Whitelist</item>
+    </array>
+    <array name="byedpi_hosts_modes_entries">
+        <item name="disable">disable</item>
+        <item name="blacklist">blacklist</item>
+        <item name="whitelist">whitelist</item>
+    </array>
 </resources>

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

@@ -57,4 +57,8 @@
     <string name="sni_of_fake_packet">SNI of fake packet</string>
     <string name="byedpi_proxy">Proxy</string>
     <string name="byedpi_desync">Desync</string>
-</resources>
+    <string name="command_line_arguments">Command line arguments</string>
+    <string name="byedpi_hosts_mode_setting">Hosts</string>
+    <string name="byedpi_hosts_blacklist_setting">Hosts blacklist</string>
+    <string name="byedpi_hosts_whitelist_setting">Hosts whitelist</string>
+</resources>

app/src/main/res/xml/byedpi_cmd_settings.xml

@@ -17,8 +17,8 @@
 
         <com.takisoft.preferencex.EditTextPreference
             android:key="byedpi_cmd_args"
-            android:title="Command line arguments"
+            android:title="@string/command_line_arguments"
-            android:dialogTitle="Command line arguments"
+            android:dialogTitle="@string/command_line_arguments"
             android:inputType="textMultiLine"
             app:useSimpleSummaryProvider="true" />
 

app/src/main/res/xml/byedpi_ui_settings.xml

@@ -53,6 +53,28 @@
     <androidx.preference.PreferenceCategory
         android:title="@string/byedpi_desync">
 
+        <DropDownPreference
+            android:key="byedpi_hosts_mode"
+            android:title="@string/byedpi_hosts_mode_setting"
+            android:entries="@array/byedpi_hosts_modes"
+            android:entryValues="@array/byedpi_hosts_modes_entries"
+            android:defaultValue="disable"
+            app:useSimpleSummaryProvider="true" />
+
+        <com.takisoft.preferencex.EditTextPreference
+            android:key="byedpi_hosts_blacklist"
+            android:title="@string/byedpi_hosts_blacklist_setting"
+            android:dialogTitle="@string/byedpi_hosts_blacklist_setting"
+            android:inputType="textMultiLine"
+            app:useSimpleSummaryProvider="true" />
+
+        <com.takisoft.preferencex.EditTextPreference
+            android:key="byedpi_hosts_whitelist"
+            android:title="@string/byedpi_hosts_whitelist_setting"
+            android:dialogTitle="@string/byedpi_hosts_whitelist_setting"
+            android:inputType="textMultiLine"
+            app:useSimpleSummaryProvider="true" />
+
         <com.takisoft.preferencex.EditTextPreference
             android:key="byedpi_default_ttl"
             android:title="@string/byedpi_default_ttl_setting"