From a9ef8f658b8b8a019da1e5d2291d2cf3ffdfc4db Mon Sep 17 00:00:00 2001
From: ssrlive <30760636+ssrlive@users.noreply.github.com>
Date: Sat, 20 Apr 2024 14:56:42 +0000
Subject: [PATCH] Android build script

---
 .github/workflows/publish-exe.yml |   4 ++
 .gitignore                        |   2 +
 build-android.sh                  | 113 ++++++++++++++++++++++++++++++
 src/apple.rs                      |   2 +-
 4 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100755 build-android.sh

diff --git a/.github/workflows/publish-exe.yml b/.github/workflows/publish-exe.yml
index 6bcb516..8f31235 100644
--- a/.github/workflows/publish-exe.yml
+++ b/.github/workflows/publish-exe.yml
@@ -77,6 +77,10 @@ jobs:
             fi
           elif [[ "${{ matrix.host_os }}" == "ubuntu-latest" ]]; then
             zip -j mypubdir4/tun2proxy-${{ matrix.target }}.zip target/${{ matrix.target }}/release/tun2proxy README.md target/tun2proxy-ffi.h target/${{ matrix.target }}/release/libtun2proxy.so
+            if [[ "${{ matrix.target }}" == "x86_64-unknown-linux-gnu" ]]; then
+              ./build-android.sh
+              cp ./tun2proxy-android-libs.zip ./mypubdir4/
+            fi
           fi
 
       - name: Publish
diff --git a/.gitignore b/.gitignore
index 59800e0..1d9d317 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,5 @@
+tun2proxy-android-libs.zip
+tun2proxy-android-libs/
 tun2proxy.xcframework/
 .env
 project.xcworkspace/
diff --git a/build-android.sh b/build-android.sh
new file mode 100755
index 0000000..fd1ed13
--- /dev/null
+++ b/build-android.sh
@@ -0,0 +1,113 @@
+#! /bin/bash
+
+work_dir=$(pwd)
+
+export ANDROID_HOME=/tmp/Android/sdk
+export NDK_HOME=${ANDROID_HOME}/ndk/25.2.9519653
+export PATH=$ANDROID_HOME/cmdline-tools/bin:$PATH
+mkdir -p $ANDROID_HOME
+
+name=tun2proxy
+package=tun2proxy
+BASE=`dirname "$0"`
+android_libs=$BASE/${name}-android-libs
+mkdir -p $android_libs
+
+function setup_env() {
+    cargo install cbindgen
+    apt update && apt install -y make llvm-dev libclang-dev clang pkg-config zip unzip curl default-jdk build-essential
+    cd /tmp/
+    curl -OL https://dl.google.com/android/repository/commandlinetools-linux-6858069_latest.zip
+    rm -rf /tmp/cmdline-tools
+    unzip commandlinetools-linux-6858069_latest.zip
+    rm -rf $ANDROID_HOME/cmdline-tools
+    mv cmdline-tools $ANDROID_HOME
+    yes | sdkmanager --sdk_root=$ANDROID_HOME --licenses
+    sdkmanager --sdk_root=$ANDROID_HOME "ndk;25.2.9519653" "platforms;android-21"
+}
+
+function build_android() {
+    local manifest=./Cargo.toml
+    local mode=--release
+    local mode2=release
+    local targets=
+
+    if [ ! -z "$2" ]; then
+        targets="$2"
+    else
+        targets="aarch64-linux-android armv7-linux-androideabi x86_64-linux-android i686-linux-android"
+    fi
+
+    for target in $targets; do
+        rustup target add $target
+    done
+
+    if [ "$1" = "debug" ]; then
+        mode=
+        mode2=debug
+    fi
+
+    local BASE=`dirname "$0"`
+    local HOST_OS=`uname -s | tr "[:upper:]" "[:lower:]"`
+    local HOST_ARCH=`uname -m | tr "[:upper:]" "[:lower:]"`
+
+    export PATH="$NDK_HOME/toolchains/llvm/prebuilt/$HOST_OS-$HOST_ARCH/bin/":$PATH
+
+    local android_tools="$NDK_HOME/toolchains/llvm/prebuilt/$HOST_OS-$HOST_ARCH/bin"
+    local api=21
+
+    for target in $targets; do
+        local target_dir=
+        case $target in
+            'armv7-linux-androideabi')
+                export CC_armv7_linux_androideabi="$android_tools/armv7a-linux-androideabi${api}-clang"
+                export AR_armv7_linux_androideabi="$android_tools/llvm-ar"
+                export CARGO_TARGET_ARMV7_LINUX_ANDROIDEABI_LINKER="$android_tools/armv7a-linux-androideabi${api}-clang"
+                target_dir=armeabi-v7a
+                ;;
+            'x86_64-linux-android')
+                export CC_x86_64_linux_android="$android_tools/${target}${api}-clang"
+                export AR_x86_64_linux_android="$android_tools/llvm-ar"
+                export CARGO_TARGET_X86_64_LINUX_ANDROID_LINKER="$android_tools/${target}${api}-clang"
+                target_dir=x86_64
+                ;;
+            'aarch64-linux-android')
+                export CC_aarch64_linux_android="$android_tools/${target}${api}-clang"
+                export AR_aarch64_linux_android="$android_tools/llvm-ar"
+                export CARGO_TARGET_AARCH64_LINUX_ANDROID_LINKER="$android_tools/${target}${api}-clang"
+                target_dir=arm64-v8a
+                ;;
+            'i686-linux-android')
+                export CC_i686_linux_android="$android_tools/${target}${api}-clang"
+                export AR_i686_linux_android="$android_tools/llvm-ar"
+                export CARGO_TARGET_I686_LINUX_ANDROID_LINKER="$android_tools/${target}${api}-clang"
+                target_dir=x86
+                ;;
+            *)
+                echo "Unknown target $target"
+                ;;
+        esac
+        cargo build --target $target $mode
+        mkdir -p $android_libs/$target_dir
+        cp $BASE/target/$target/${mode2}/lib${name}.so $android_libs/${target_dir}/lib${name}.so
+    done
+
+    cbindgen -c $BASE/cbindgen.toml -l C -o $android_libs/$name.h
+}
+
+function main() {
+    echo "Setting up the build environment..."
+    setup_env
+    cd $work_dir
+
+    echo "build android target"
+    build_android "$@"
+    cd $work_dir
+
+    echo "Creating zip file"
+    rm -rf ${name}-android-libs.zip
+    zip -r ${name}-android-libs.zip ${name}-android-libs
+}
+
+main "$@"
+
diff --git a/src/apple.rs b/src/apple.rs
index 0a5d1c3..3776306 100644
--- a/src/apple.rs
+++ b/src/apple.rs
@@ -1,4 +1,4 @@
-#![cfg(any(target_os = "ios", target_os = "macos"))]
+#![cfg(any(target_os = "android", target_os = "ios", target_os = "macos"))]
 
 use crate::{
     args::{ArgDns, ArgProxy},