├── app ├── .gitignore ├── src │ └── main │ │ ├── res │ │ ├── mipmap-hdpi │ │ │ ├── ic_launcher.webp │ │ │ └── ic_launcher_round.webp │ │ ├── mipmap-mdpi │ │ │ ├── ic_launcher.webp │ │ │ └── ic_launcher_round.webp │ │ ├── mipmap-xhdpi │ │ │ ├── ic_launcher.webp │ │ │ └── ic_launcher_round.webp │ │ ├── mipmap-xxhdpi │ │ │ ├── ic_launcher.webp │ │ │ └── ic_launcher_round.webp │ │ ├── mipmap-xxxhdpi │ │ │ ├── ic_launcher.webp │ │ │ └── ic_launcher_round.webp │ │ ├── mipmap-anydpi │ │ │ ├── ic_launcher.xml │ │ │ └── ic_launcher_round.xml │ │ └── drawable │ │ │ ├── ic_launcher_foreground.xml │ │ │ └── ic_launcher_background.xml │ │ ├── cpp │ │ ├── CMakeLists.txt │ │ ├── logging.h │ │ └── main.cpp │ │ ├── AndroidManifest.xml │ │ └── java │ │ └── io │ │ └── github │ │ └── eirv │ │ └── simpleioredirect │ │ └── MainActivity.java ├── proguard-rules.pro └── build.gradle ├── .idea ├── .gitignore ├── vcs.xml ├── compiler.xml ├── kotlinc.xml ├── migrations.xml ├── misc.xml ├── gradle.xml └── deploymentTargetDropDown.xml ├── imgs ├── a.png ├── b.png └── c.jpg ├── app-debug.apk ├── gradle ├── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties └── libs.versions.toml ├── .gitignore ├── README.md ├── settings.gradle ├── gradle.properties ├── gradlew.bat ├── gradlew └── LICENSE /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build -------------------------------------------------------------------------------- /.idea/.gitignore: -------------------------------------------------------------------------------- 1 | # Default ignored files 2 | /shelf/ 3 | /workspace.xml 4 | -------------------------------------------------------------------------------- /imgs/a.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/imgs/a.png -------------------------------------------------------------------------------- /imgs/b.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/imgs/b.png -------------------------------------------------------------------------------- /imgs/c.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/imgs/c.jpg -------------------------------------------------------------------------------- /app-debug.apk: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app-debug.apk -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-hdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-hdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-mdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-mdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/eirv/SimpleIORedirect/HEAD/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.webp -------------------------------------------------------------------------------- /.idea/vcs.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/compiler.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/kotlinc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 6 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | #Mon Apr 08 11:01:20 CST 2024 2 | distributionBase=GRADLE_USER_HOME 3 | distributionPath=wrapper/dists 4 | distributionUrl=https\://mirrors.cloud.tencent.com/gradle/gradle-8.13-bin.zip 5 | zipStoreBase=GRADLE_USER_HOME 6 | zipStorePath=wrapper/dists 7 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | /.idea/navEditor.xml 9 | /.idea/assetWizardSettings.xml 10 | .DS_Store 11 | /build 12 | /captures 13 | .externalNativeBuild 14 | .cxx 15 | local.properties 16 | -------------------------------------------------------------------------------- /.idea/migrations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 10 | -------------------------------------------------------------------------------- /app/src/main/cpp/CMakeLists.txt: -------------------------------------------------------------------------------- 1 | cmake_minimum_required(VERSION 3.22.1) 2 | 3 | if (ANDROID_ABI STREQUAL "riscv64") 4 | set(ANDROID_PLATFORM "android-35") 5 | endif () 6 | 7 | project("io-redirect") 8 | 9 | add_library(${PROJECT_NAME} SHARED main.cpp) 10 | target_link_libraries(${PROJECT_NAME} log) 11 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi/ic_launcher.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /app/src/main/res/mipmap-anydpi/ic_launcher_round.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | -------------------------------------------------------------------------------- /app/src/main/cpp/logging.h: -------------------------------------------------------------------------------- 1 | #pragma once 2 | 3 | #include 4 | 5 | #ifndef LOG_TAG 6 | #define LOG_TAG "IORedirect" 7 | #endif 8 | 9 | #ifndef NDEBUG 10 | #define LOGE(...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, __VA_ARGS__) 11 | #define LOGD(...) __android_log_print(ANDROID_LOG_DEBUG, LOG_TAG, __VA_ARGS__) 12 | #define LOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, LOG_TAG, __VA_ARGS__) 13 | #else 14 | #define LOGE(...) 15 | #define LOGD(...) 16 | #define LOGV(...) 17 | #endif 18 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 18 | 19 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 9 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # SimpleIORedirect 2 | Android I/O redirection implementation, using seccomp user notify mechanism 3 | 4 | * At least kernel version **5.10** required 5 | * This example has been tested on `aarch64`, `x86_64` and `riscv64` architectures 6 | * This example currently only supports debug build, in release build you should implement memory read and write yourself 7 | 8 | 使用 seccomp user notify 机制的 Android I/O 重定向实现 9 | 10 | * 至少需要 **5.10** 版本内核 11 | * 本示例已在 `aarch64`, `x86_64` 与 `riscv64` 架构上测试通过 12 | * 本示例目前仅支持 debug 构建, 在 release 构建时你应该自行实现内存读写 13 | 14 | [Download example](https://github.com/eirv/SimpleIORedirect/raw/main/app-debug.apk) 15 | 16 | 提示: ~~稍加修改可以对最新某数字加固实现过签~~ 17 | 18 | 看来已经开始有人用于过签360加固了🤔 19 | ![A](imgs/a.png) 20 | ![B](imgs/b.png) 21 | ![C](imgs/c.jpg) 22 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile -------------------------------------------------------------------------------- /.idea/deploymentTargetDropDown.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | pluginManagement { 2 | repositories { 3 | maven { url 'https://maven.aliyun.com/repository/public/' } 4 | maven { url 'https://maven.aliyun.com/repository/google/' } 5 | maven { url 'https://maven.aliyun.com/repository/gradle-plugin/' } 6 | google { 7 | content { 8 | includeGroupByRegex("com\\.android.*") 9 | includeGroupByRegex("com\\.google.*") 10 | includeGroupByRegex("androidx.*") 11 | } 12 | } 13 | mavenCentral() 14 | gradlePluginPortal() 15 | } 16 | } 17 | dependencyResolutionManagement { 18 | repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS) 19 | repositories { 20 | maven { url 'https://maven.aliyun.com/repository/public/' } 21 | maven { url 'https://maven.aliyun.com/repository/google/' } 22 | google() 23 | mavenCentral() 24 | } 25 | } 26 | 27 | rootProject.name = "SimpleIORedirect" 28 | include ':app' 29 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | plugins { 2 | alias(libs.plugins.androidApplication) 3 | } 4 | 5 | android { 6 | namespace 'io.github.eirv.simpleioredirect' 7 | compileSdk 35 8 | ndkVersion '29.0.13113456' 9 | 10 | defaultConfig { 11 | applicationId "io.github.eirv.simpleioredirect" 12 | minSdk 31 13 | targetSdk 35 14 | versionCode 1 15 | versionName "1.0" 16 | 17 | externalNativeBuild { 18 | cmake { 19 | cppFlags '-std=c++23' 20 | arguments += '-DANDROID_STL=none' 21 | } 22 | } 23 | ndk { 24 | abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86', 'x86_64', 'riscv64' 25 | } 26 | } 27 | 28 | buildTypes { 29 | release { 30 | minifyEnabled false 31 | proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' 32 | } 33 | } 34 | externalNativeBuild { 35 | cmake { 36 | path 'src/main/cpp/CMakeLists.txt' 37 | version '3.22.1' 38 | } 39 | } 40 | compileOptions { 41 | sourceCompatibility JavaVersion.VERSION_11 42 | targetCompatibility JavaVersion.VERSION_11 43 | } 44 | packagingOptions { 45 | jniLibs.useLegacyPackaging true 46 | } 47 | } 48 | 49 | dependencies { 50 | } -------------------------------------------------------------------------------- /gradle.properties: -------------------------------------------------------------------------------- 1 | # Project-wide Gradle settings. 2 | # IDE (e.g. Android Studio) users: 3 | # Gradle settings configured through the IDE *will override* 4 | # any settings specified in this file. 5 | # For more details on how to configure your build environment visit 6 | # http://www.gradle.org/docs/current/userguide/build_environment.html 7 | # Specifies the JVM arguments used for the daemon process. 8 | # The setting is particularly useful for tweaking memory settings. 9 | org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8 10 | # When configured, Gradle will run in incubating parallel mode. 11 | # This option should only be used with decoupled projects. For more details, visit 12 | # https://developer.android.com/r/tools/gradle-multi-project-decoupled-projects 13 | # org.gradle.parallel=true 14 | # AndroidX package structure to make it clearer which packages are bundled with the 15 | # Android operating system, and which are packaged with your app's APK 16 | # https://developer.android.com/topic/libraries/support-library/androidx-rn 17 | android.useAndroidX=true 18 | # Kotlin code style for this project: "official" or "obsolete": 19 | kotlin.code.style=official 20 | # Enables namespacing of each library's R class so that its R class includes only the 21 | # resources declared in the library itself and none from the library's dependencies, 22 | # thereby reducing the size of the R class for that library 23 | android.nonTransitiveRClass=true -------------------------------------------------------------------------------- /gradle/libs.versions.toml: -------------------------------------------------------------------------------- 1 | [versions] 2 | agp = "8.9.0" 3 | kotlin = "1.9.0" 4 | coreKtx = "1.12.0" 5 | junit = "4.13.2" 6 | junitVersion = "1.1.5" 7 | espressoCore = "3.5.1" 8 | lifecycleRuntimeKtx = "2.7.0" 9 | activityCompose = "1.8.2" 10 | composeBom = "2023.08.00" 11 | 12 | [libraries] 13 | androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" } 14 | junit = { group = "junit", name = "junit", version.ref = "junit" } 15 | androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "junitVersion" } 16 | androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" } 17 | androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" } 18 | androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" } 19 | androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" } 20 | androidx-ui = { group = "androidx.compose.ui", name = "ui" } 21 | androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" } 22 | androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" } 23 | androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" } 24 | androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" } 25 | androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" } 26 | androidx-material3 = { group = "androidx.compose.material3", name = "material3" } 27 | 28 | [plugins] 29 | androidApplication = { id = "com.android.application", version.ref = "agp" } 30 | jetbrainsKotlinAndroid = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" } 31 | 32 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 8 | 9 | 15 | 18 | 21 | 22 | 23 | 24 | 30 | -------------------------------------------------------------------------------- /app/src/main/java/io/github/eirv/simpleioredirect/MainActivity.java: -------------------------------------------------------------------------------- 1 | package io.github.eirv.simpleioredirect; 2 | 3 | import android.app.Activity; 4 | import android.app.AlertDialog; 5 | import android.os.Build; 6 | import android.os.Bundle; 7 | import android.util.Log; 8 | import android.widget.TextView; 9 | 10 | import java.io.File; 11 | import java.io.IOException; 12 | import java.nio.file.Files; 13 | import java.nio.file.Paths; 14 | 15 | public class MainActivity extends Activity { 16 | private static final String TARGET_PATH = "/just/for/fun"; 17 | 18 | static { 19 | System.loadLibrary("io-redirect"); 20 | } 21 | 22 | @Override 23 | protected void onCreate(Bundle savedInstanceState) { 24 | super.onCreate(savedInstanceState); 25 | 26 | var redirection = new File(getDataDir(), "redirection.txt"); 27 | try { 28 | Files.write(redirection.toPath(), "This is redirection.txt".getBytes()); 29 | } catch (IOException ignored) { 30 | } 31 | 32 | var actionBar = getActionBar(); 33 | if (actionBar != null) { 34 | actionBar.setSubtitle(TARGET_PATH); 35 | } 36 | 37 | if (!redirect(TARGET_PATH, redirection.getPath())) { 38 | new AlertDialog.Builder(this) 39 | .setTitle("Error") 40 | .setMessage("This example cannot be run on your device and requires at least kernel version 5.10") 41 | .setPositiveButton(android.R.string.ok, null) 42 | .create() 43 | .show(); 44 | } 45 | 46 | var textView = new TextView(this); 47 | textView.setText(readFile(TARGET_PATH)); 48 | if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.VANILLA_ICE_CREAM) { 49 | textView.setFitsSystemWindows(true); 50 | } 51 | setContentView(textView); 52 | } 53 | 54 | private static String readFile(String path) { 55 | try { 56 | return new String(Files.readAllBytes(Paths.get(path))); 57 | } catch (IOException e) { 58 | return Log.getStackTraceString(e); 59 | } 60 | } 61 | 62 | public static native boolean redirect(String target, String redirection); 63 | } 64 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if "%ERRORLEVEL%" == "0" goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if "%ERRORLEVEL%"=="0" goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 84 | exit /b 1 85 | 86 | :mainEnd 87 | if "%OS%"=="Windows_NT" endlocal 88 | 89 | :omega 90 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 7 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 | 75 | 80 | 85 | 90 | 95 | 100 | 105 | 110 | 115 | 120 | 125 | 130 | 135 | 140 | 145 | 150 | 155 | 160 | 165 | 170 | 171 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | # 4 | # Copyright 2015 the original author or authors. 5 | # 6 | # Licensed under the Apache License, Version 2.0 (the "License"); 7 | # you may not use this file except in compliance with the License. 8 | # You may obtain a copy of the License at 9 | # 10 | # https://www.apache.org/licenses/LICENSE-2.0 11 | # 12 | # Unless required by applicable law or agreed to in writing, software 13 | # distributed under the License is distributed on an "AS IS" BASIS, 14 | # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 | # See the License for the specific language governing permissions and 16 | # limitations under the License. 17 | # 18 | 19 | ############################################################################## 20 | ## 21 | ## Gradle start up script for UN*X 22 | ## 23 | ############################################################################## 24 | 25 | # Attempt to set APP_HOME 26 | # Resolve links: $0 may be a link 27 | PRG="$0" 28 | # Need this for relative symlinks. 29 | while [ -h "$PRG" ] ; do 30 | ls=`ls -ld "$PRG"` 31 | link=`expr "$ls" : '.*-> \(.*\)$'` 32 | if expr "$link" : '/.*' > /dev/null; then 33 | PRG="$link" 34 | else 35 | PRG=`dirname "$PRG"`"/$link" 36 | fi 37 | done 38 | SAVED="`pwd`" 39 | cd "`dirname \"$PRG\"`/" >/dev/null 40 | APP_HOME="`pwd -P`" 41 | cd "$SAVED" >/dev/null 42 | 43 | APP_NAME="Gradle" 44 | APP_BASE_NAME=`basename "$0"` 45 | 46 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 47 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 48 | 49 | # Use the maximum available, or set MAX_FD != -1 to use that value. 50 | MAX_FD="maximum" 51 | 52 | warn () { 53 | echo "$*" 54 | } 55 | 56 | die () { 57 | echo 58 | echo "$*" 59 | echo 60 | exit 1 61 | } 62 | 63 | # OS specific support (must be 'true' or 'false'). 64 | cygwin=false 65 | msys=false 66 | darwin=false 67 | nonstop=false 68 | case "`uname`" in 69 | CYGWIN* ) 70 | cygwin=true 71 | ;; 72 | Darwin* ) 73 | darwin=true 74 | ;; 75 | MINGW* ) 76 | msys=true 77 | ;; 78 | NONSTOP* ) 79 | nonstop=true 80 | ;; 81 | esac 82 | 83 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 84 | 85 | 86 | # Determine the Java command to use to start the JVM. 87 | if [ -n "$JAVA_HOME" ] ; then 88 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 89 | # IBM's JDK on AIX uses strange locations for the executables 90 | JAVACMD="$JAVA_HOME/jre/sh/java" 91 | else 92 | JAVACMD="$JAVA_HOME/bin/java" 93 | fi 94 | if [ ! -x "$JAVACMD" ] ; then 95 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 96 | 97 | Please set the JAVA_HOME variable in your environment to match the 98 | location of your Java installation." 99 | fi 100 | else 101 | JAVACMD="java" 102 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 103 | 104 | Please set the JAVA_HOME variable in your environment to match the 105 | location of your Java installation." 106 | fi 107 | 108 | # Increase the maximum file descriptors if we can. 109 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 110 | MAX_FD_LIMIT=`ulimit -H -n` 111 | if [ $? -eq 0 ] ; then 112 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 113 | MAX_FD="$MAX_FD_LIMIT" 114 | fi 115 | ulimit -n $MAX_FD 116 | if [ $? -ne 0 ] ; then 117 | warn "Could not set maximum file descriptor limit: $MAX_FD" 118 | fi 119 | else 120 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 121 | fi 122 | fi 123 | 124 | # For Darwin, add options to specify how the application appears in the dock 125 | if $darwin; then 126 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 127 | fi 128 | 129 | # For Cygwin or MSYS, switch paths to Windows format before running java 130 | if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then 131 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 132 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 133 | 134 | JAVACMD=`cygpath --unix "$JAVACMD"` 135 | 136 | # We build the pattern for arguments to be converted via cygpath 137 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 138 | SEP="" 139 | for dir in $ROOTDIRSRAW ; do 140 | ROOTDIRS="$ROOTDIRS$SEP$dir" 141 | SEP="|" 142 | done 143 | OURCYGPATTERN="(^($ROOTDIRS))" 144 | # Add a user-defined pattern to the cygpath arguments 145 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 146 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 147 | fi 148 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 149 | i=0 150 | for arg in "$@" ; do 151 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 152 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 153 | 154 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 155 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 156 | else 157 | eval `echo args$i`="\"$arg\"" 158 | fi 159 | i=`expr $i + 1` 160 | done 161 | case $i in 162 | 0) set -- ;; 163 | 1) set -- "$args0" ;; 164 | 2) set -- "$args0" "$args1" ;; 165 | 3) set -- "$args0" "$args1" "$args2" ;; 166 | 4) set -- "$args0" "$args1" "$args2" "$args3" ;; 167 | 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 168 | 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 169 | 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 170 | 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 171 | 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 172 | esac 173 | fi 174 | 175 | # Escape application args 176 | save () { 177 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 178 | echo " " 179 | } 180 | APP_ARGS=`save "$@"` 181 | 182 | # Collect all arguments for the java command, following the shell quoting and substitution rules 183 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 184 | 185 | exec "$JAVACMD" "$@" 186 | -------------------------------------------------------------------------------- /app/src/main/cpp/main.cpp: -------------------------------------------------------------------------------- 1 | #include 2 | #include 3 | #include 4 | #include 5 | #include 6 | #include 7 | #include 8 | #include 9 | #include 10 | #include 11 | #include 12 | #include 13 | #include 14 | #include 15 | #include 16 | #include 17 | #include 18 | #include 19 | #include 20 | #include 21 | #include 22 | 23 | #include "logging.h" 24 | 25 | static inline int seccomp(int op, int fd, void *arg) { 26 | return syscall(__NR_seccomp, op, fd, arg); 27 | } 28 | 29 | static int sendfd(int sockfd, int fd) { 30 | int data; 31 | struct iovec iov{}; 32 | struct msghdr msgh{}; 33 | struct cmsghdr *cmsgp; 34 | 35 | /* Allocate a char array of suitable size to hold the ancillary data. 36 | However, since this buffer is in reality a 'struct cmsghdr', use a 37 | union to ensure that it is suitably aligned. */ 38 | union { 39 | char buf[CMSG_SPACE(sizeof(int))]; 40 | /* Space large enough to hold an 'int' */ 41 | struct cmsghdr align; 42 | } controlMsg{}; 43 | 44 | /* The 'msg_name' field can be used to specify the address of the 45 | destination socket when sending a datagram. However, we do not 46 | need to use this field because 'sockfd' is a connected socket. */ 47 | 48 | msgh.msg_name = nullptr; 49 | msgh.msg_namelen = 0; 50 | 51 | /* On Linux, we must transmit at least one byte of real data in 52 | order to send ancillary data. We transmit an arbitrary integer 53 | whose value is ignored by recvfd(). */ 54 | 55 | msgh.msg_iov = &iov; 56 | msgh.msg_iovlen = 1; 57 | iov.iov_base = &data; 58 | iov.iov_len = sizeof(int); 59 | data = 12345; 60 | 61 | /* Set 'msghdr' fields that describe ancillary data */ 62 | 63 | msgh.msg_control = controlMsg.buf; 64 | msgh.msg_controllen = sizeof(controlMsg.buf); 65 | 66 | /* Set up ancillary data describing file descriptor to send */ 67 | 68 | cmsgp = reinterpret_cast(msgh.msg_control); 69 | cmsgp->cmsg_level = SOL_SOCKET; 70 | cmsgp->cmsg_type = SCM_RIGHTS; 71 | cmsgp->cmsg_len = CMSG_LEN(sizeof(int)); 72 | memcpy(CMSG_DATA(cmsgp), &fd, sizeof(int)); 73 | 74 | /* Send real plus ancillary data */ 75 | 76 | if (sendmsg(sockfd, &msgh, 0) == -1) return -1; 77 | 78 | return 0; 79 | } 80 | 81 | static int recvfd(int sockfd) { 82 | int data, fd; 83 | ssize_t nr; 84 | struct iovec iov{}; 85 | struct msghdr msgh{}; 86 | 87 | /* Allocate a char buffer for the ancillary data. See the comments 88 | in sendfd() */ 89 | union { 90 | char buf[CMSG_SPACE(sizeof(int))]; 91 | struct cmsghdr align; 92 | } controlMsg{}; 93 | struct cmsghdr *cmsgp; 94 | 95 | /* The 'msg_name' field can be used to obtain the address of the 96 | sending socket. However, we do not need this information. */ 97 | 98 | msgh.msg_name = nullptr; 99 | msgh.msg_namelen = 0; 100 | 101 | /* Specify buffer for receiving real data */ 102 | 103 | msgh.msg_iov = &iov; 104 | msgh.msg_iovlen = 1; 105 | iov.iov_base = &data; /* Real data is an 'int' */ 106 | iov.iov_len = sizeof(int); 107 | 108 | /* Set 'msghdr' fields that describe ancillary data */ 109 | 110 | msgh.msg_control = controlMsg.buf; 111 | msgh.msg_controllen = sizeof(controlMsg.buf); 112 | 113 | /* Receive real plus ancillary data; real data is ignored */ 114 | 115 | nr = recvmsg(sockfd, &msgh, 0); 116 | if (nr == -1) return -1; 117 | 118 | cmsgp = CMSG_FIRSTHDR(&msgh); 119 | 120 | /* Check the validity of the 'cmsghdr' */ 121 | 122 | if (cmsgp == nullptr || cmsgp->cmsg_len != CMSG_LEN(sizeof(int)) || 123 | cmsgp->cmsg_level != SOL_SOCKET || cmsgp->cmsg_type != SCM_RIGHTS) { 124 | errno = EINVAL; 125 | return -1; 126 | } 127 | 128 | /* Return the received file descriptor to our caller */ 129 | 130 | memcpy(&fd, CMSG_DATA(cmsgp), sizeof(int)); 131 | return fd; 132 | } 133 | 134 | class ProcessMemory { 135 | public: 136 | explicit ProcessMemory(pid_t pid) : pid_(pid) { 137 | } 138 | 139 | int Read(uintptr_t addr, void *buf, size_t size) const { 140 | iovec local{buf, size}; 141 | iovec remote{reinterpret_cast(addr), size}; 142 | return process_vm_readv(pid_, &local, 1, &remote, 1, 0); 143 | } 144 | 145 | int Write(uintptr_t addr, void *buf, size_t size) const { 146 | iovec local{buf, size}; 147 | iovec remote{reinterpret_cast(addr), size}; 148 | return process_vm_writev(pid_, &local, 1, &remote, 1, 0); 149 | } 150 | 151 | private: 152 | pid_t pid_; 153 | }; 154 | 155 | void EnterSupervisor(int nfd, const char *target, const char *redirection) { 156 | seccomp_notif *req; 157 | seccomp_notif_resp *resp; 158 | seccomp_notif_sizes sizes{}; 159 | 160 | if (seccomp(SECCOMP_GET_NOTIF_SIZES, 0, &sizes) == 0) { 161 | req = reinterpret_cast(malloc(sizes.seccomp_notif)); 162 | resp = reinterpret_cast(malloc(sizes.seccomp_notif_resp)); 163 | } else { 164 | LOGE("seccomp(SECCOMP_GET_NOTIF_SIZES): %m"); 165 | return; 166 | } 167 | 168 | char path[PATH_MAX]; 169 | 170 | for (;;) { 171 | memset(req, 0, sizes.seccomp_notif); 172 | if (ioctl(nfd, SECCOMP_IOCTL_NOTIF_RECV, req) < 0) { 173 | if (errno == EINTR) continue; 174 | LOGE("ioctl(SECCOMP_IOCTL_NOTIF_RECV): %m"); 175 | goto exit; 176 | } 177 | 178 | memset(resp, 0, sizes.seccomp_notif_resp); 179 | resp->id = req->id; 180 | 181 | ProcessMemory mem(req->pid); 182 | int nread = mem.Read(req->data.args[1], path, sizeof(path) - 1); 183 | 184 | if (nread > 0) { 185 | path[nread] = '\0'; 186 | LOGV("open: %s", path); 187 | 188 | if (strcmp(path, target) == 0) { 189 | int srcfd = openat(AT_FDCWD, redirection, req->data.args[2], 190 | req->data.args[3]); 191 | if (srcfd > 0) { 192 | seccomp_notif_addfd addfd = {.id = req->id, 193 | .flags = 0 /* SECCOMP_ADDFD_FLAG_SEND */, 194 | .srcfd = static_cast(srcfd)}; 195 | resp->val = ioctl(nfd, SECCOMP_IOCTL_NOTIF_ADDFD, &addfd); 196 | close(srcfd); 197 | } else { 198 | resp->error = -errno; 199 | } 200 | } else { 201 | resp->flags = SECCOMP_USER_NOTIF_FLAG_CONTINUE; 202 | } 203 | } else { 204 | resp->flags = SECCOMP_USER_NOTIF_FLAG_CONTINUE; 205 | } 206 | 207 | if (ioctl(nfd, SECCOMP_IOCTL_NOTIF_SEND, resp) < 0) { 208 | LOGE("ioctl(SECCOMP_IOCTL_NOTIF_SEND): %m"); 209 | } 210 | } 211 | 212 | exit: 213 | free(req); 214 | free(resp); 215 | LOGD("supervisor exit"); 216 | _exit(0); 217 | } 218 | 219 | bool InitIORedirect(const char *target, const char *redirection) { 220 | utsname un{}; 221 | uname(&un); 222 | 223 | char *str; 224 | int kernel_major = strtol(un.release, &str, 10); 225 | int kernel_minor = strtol(str + 1, nullptr, 10); 226 | 227 | if (KERNEL_VERSION(kernel_major, kernel_minor, 0) < KERNEL_VERSION(5, 9, 0)) { 228 | LOGE("Kernel(%s) not supported", un.release); 229 | return false; 230 | } 231 | 232 | prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0); 233 | 234 | sock_filter filter[] = { 235 | BPF_STMT(BPF_LD | BPF_W | BPF_ABS, offsetof(seccomp_data, nr)), 236 | BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, __NR_openat, 1, 0), 237 | BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW), 238 | BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_USER_NOTIF), 239 | }; 240 | 241 | sock_fprog prog{sizeof(filter) / sizeof(sock_filter), filter}; 242 | 243 | int socked_fds[2]; 244 | socketpair(AF_UNIX, SOCK_STREAM, 0, socked_fds); 245 | 246 | int supervisor_pid = fork(); 247 | if (supervisor_pid < 0) { 248 | LOGE("Failed to fork supervisor"); 249 | return false; 250 | } else if (supervisor_pid == 0) { 251 | int notify_fd = recvfd(socked_fds[1]); 252 | close(socked_fds[0]); 253 | close(socked_fds[1]); 254 | EnterSupervisor(notify_fd, strdup(target), strdup(redirection)); 255 | } 256 | 257 | int notify_fd = seccomp(SECCOMP_SET_MODE_FILTER, 258 | SECCOMP_FILTER_FLAG_NEW_LISTENER, &prog); 259 | if (notify_fd < 0) { 260 | LOGE("seccomp: %m"); 261 | return false; 262 | } 263 | 264 | sendfd(socked_fds[0], notify_fd); 265 | close(socked_fds[0]); 266 | close(socked_fds[1]); 267 | close(notify_fd); 268 | 269 | return true; 270 | } 271 | 272 | extern "C" 273 | JNIEXPORT jboolean JNICALL 274 | Java_io_github_eirv_simpleioredirect_MainActivity_redirect(JNIEnv *env, jclass, 275 | jstring target, jstring redirection) { 276 | auto t = env->GetStringUTFChars(target, nullptr); 277 | auto r = env->GetStringUTFChars(redirection, nullptr); 278 | 279 | LOGD("Redirect %s -> %s", t, r); 280 | bool result = InitIORedirect(t, r); 281 | 282 | env->ReleaseStringUTFChars(target, t); 283 | env->ReleaseStringUTFChars(redirection, r); 284 | 285 | return result; 286 | } -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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