feat: 添加 Magisk v30.2 自动下载和提取功能，更新 init 服务配置，改进二进制文件提取逻辑，并新增 README 文档说明项目结构和使用方法。

README.md

@@ -0,0 +1,52 @@
+# Magisk Vendor 项目
+
+这个项目为 Android 设备提供 Magisk 支持，适用于 vendor overlay 构建。
+
+## 更新内容
+
+- ✅ 更新到官方 Magisk v30.2 版本
+- ✅ 添加了自动下载功能，无需手动准备 APK 文件
+- ✅ 集成了 MD5 校验确保文件完整性
+- ✅ 改进了二进制文件提取逻辑
+- ✅ 更新了 init 服务配置
+- ✅ 添加了自动构建时提取
+
+## 使用方法
+
+1. 运行提取脚本自动下载并提取 Magisk v30.2：
+   ```bash
+   python3 extract.py
+   ```
+2. 或者直接进行 Android 构建，二进制文件会自动下载和提取
+
+脚本会自动：
+- 从官方 GitHub 下载 Magisk v30.2 APK
+- 验证文件 MD5 校验和 (2691c30ccf059af2536cb0af803c787c)
+- 提取二进制文件到 rootfs 目录
+
+## 目录结构
+
+```
+vendor/magisk/
+├── extract.py          # 提取脚本
+├── magisk.apk          # Magisk APK 文件
+├── magisk.rc           # Init 服务配置
+├── Android.mk          # 构建配置
+├── device.mk           # 设备配置
+└── rootfs/
+    └── vendor/
+        └── etc/
+            └── init/
+                └── magisk/     # 提取的二进制文件目录
+```
+
+## 支持的架构
+
+- ARM64 (arm64-v8a)
+- ARM32 (armeabi-v7a)
+
+## 兼容性
+
+- 支持最新版本的 Magisk
+- 适用于 Redroid 环境
+- 兼容 Android vendor overlay 构建系统

device.mk

@@ -6,3 +6,6 @@ PRODUCT_COPY_FILES += \
     vendor/magisk/magisk.rc:$(TARGET_COPY_OUT_VENDOR)/etc/init/magisk.rc \
     $(call find-copy-subdir-files,*,vendor/magisk/rootfs/vendor/etc/init,$(TARGET_COPY_OUT_VENDOR)/etc/init) \
 
+# Extract Magisk binaries from APK during build
+$(shell cd vendor/magisk && python3 extract.py)
+

extract.py

@@ -1,19 +1,58 @@
 #!/usr/bin/env python3
 import atexit
+import hashlib
 import os.path
 import re
 import shutil
 import subprocess
+import urllib.request
 import zipfile
 
 
+def calculate_md5(file_path):
+    """计算文件的 MD5 值"""
+    hash_md5 = hashlib.md5()
+    with open(file_path, "rb") as f:
+        for chunk in iter(lambda: f.read(4096), b""):
+            hash_md5.update(chunk)
+    return hash_md5.hexdigest()
+
+
+def download_file(url, file_path):
+    """下载文件"""
+    print(f"==> Downloading from {url}")
+    urllib.request.urlretrieve(url, file_path)
+
+
 def main():
     current_path = os.path.dirname(os.path.abspath(__file__))
     apk_path = os.path.join(current_path, "magisk.apk")
     unzip_path = os.path.join(current_path, "temp")
     overlay_path = os.path.join(current_path, "rootfs")
     overlay_magisk_path = os.path.join(overlay_path, "vendor", "etc", "init", "magisk")
-    overlay_init_path = os.path.join(overlay_path, "vendor", "etc", "init", "magisk.rc")
+    
+    # Magisk 下载配置
+    magisk_url = "https://github.com/topjohnwu/Magisk/releases/download/v30.2/Magisk-v30.2.apk"
+    expected_md5 = "2691c30ccf059af2536cb0af803c787c"
+    
+    # 检查并下载 Magisk APK
+    need_download = True
+    if os.path.exists(apk_path):
+        print("==> Checking existing Magisk APK...")
+        actual_md5 = calculate_md5(apk_path)
+        if actual_md5 == expected_md5:
+            print("==> Magisk APK already exists and verified!")
+            need_download = False
+        else:
+            print(f"==> MD5 mismatch. Expected: {expected_md5}, Got: {actual_md5}")
+    
+    if need_download:
+        print("==> Downloading Magisk v30.2...")
+        download_file(magisk_url, apk_path)
+        actual_md5 = calculate_md5(apk_path)
+        if actual_md5 != expected_md5:
+            raise Exception(f"Downloaded file MD5 verification failed! Expected: {expected_md5}, Got: {actual_md5}")
+        print("==> Download completed and verified!")
 
     shutil.rmtree(unzip_path, ignore_errors=True)
     os.makedirs(unzip_path, exist_ok=True)
@@ -27,17 +66,31 @@ def main():
     os.makedirs(overlay_magisk_path, exist_ok=True)
 
     print("==> Installing magisk now ...")
+    # Extract arm64 binaries
     lib64_path = os.path.join(unzip_path, "lib", "arm64-v8a")
     for parent, dirnames, filenames in os.walk(lib64_path):
         for filename in filenames:
             so_path = os.path.join(lib64_path, filename)
             so_name = re.search(r"lib(.*)\.so", filename)
+            if so_name:
                 target_path = os.path.join(overlay_magisk_path, so_name.group(1))
                 shutil.copyfile(so_path, target_path)
                 subprocess.check_call(["chmod", "+x", target_path])
 
+    # Extract arm32 magisk binary
     lib32_path = os.path.join(unzip_path, "lib", "armeabi-v7a")
-    shutil.copyfile(os.path.join(lib32_path, "libmagisk32.so"), os.path.join(overlay_magisk_path, "magisk32"))
+    magisk32_src = os.path.join(lib32_path, "libmagisk32.so")
+    magisk32_dst = os.path.join(overlay_magisk_path, "magisk32")
+    if os.path.exists(magisk32_src):
+        shutil.copyfile(magisk32_src, magisk32_dst)
+        subprocess.check_call(["chmod", "+x", magisk32_dst])
+
+    # Copy magisk.apk to target directory
+    apk_dst = os.path.join(overlay_magisk_path, "magisk.apk")
+    if os.path.exists(apk_path):
+        shutil.copyfile(apk_path, apk_dst)
+    
+    print("==> Magisk installation completed!")
 
 
 if __name__ == '__main__':

magisk.rc

@@ -3,25 +3,29 @@
 on post-fs-data && property:ro.boot.redroid_magisk=1
     start logd
     chmod 0755 /vendor/etc/init/magisk/magisk64
+    chmod 0755 /vendor/etc/init/magisk/magisk32
+    chmod 0755 /vendor/etc/init/magisk/magiskinit
+    chmod 0755 /vendor/etc/init/magisk/magiskboot
     chmod 0755 /vendor/etc/init/magisk/magiskpolicy
+    chmod 0755 /vendor/etc/init/magisk/busybox
     exec u:r:su:s0 root root -- /vendor/etc/init/magisk/magisk64 --setup-sbin /vendor/etc/init/magisk
     exec u:r:su:s0 root root -- /vendor/etc/init/magisk/magiskpolicy --live --magisk "allow * magisk_file lnk_file *"
     mkdir /sbin/.magisk 700
     mkdir /sbin/.magisk/mirror 700
     mkdir /sbin/.magisk/block 700
     rm /dev/.magisk_unblock
-    start 7zKkuZ1ZhD
+    start magisk_post_fs_data
     wait /dev/.magisk_unblock 40
     rm /dev/.magisk_unblock
-    start wHgGlkRCtMoIQw
+    start magisk_service
 
-service 7zKkuZ1ZhD /sbin/magisk --post-fs-data
+service magisk_post_fs_data /sbin/magisk --post-fs-data
     user root
     seclabel u:r:su:s0
     oneshot
     disabled
 
-service wHgGlkRCtMoIQw /sbin/magisk --service
+service magisk_service /sbin/magisk --service
     user root
     seclabel u:r:su:s0
     oneshot