#!/usr/bin/env python3
"""
Bandizip Professional Patcher
=============================
一键补丁器：备份、patch、验证、恢复。

Patch 内容（共 8 处，35 字节）：
  1. sub_1400D18F0 @ 0xD0CF0 -> B0 01 C3 (mov al,1; ret)  在线验证跳过
  2. sub_1400CF980 @ 0xCED80 -> B0 01 C3 (mov al,1; ret)  写注册表跳过
  3. sub_1400CF470 @ 0xCE870 -> B0 01 C3 (mov al,1; ret)  Edition 检查返回 true
  4. sub_140133648 @ 0x132A48 -> 90*6 (NOP)  注册码长度检查跳过
  5. sub_140133655 @ 0x132A55 -> 90*6 (NOP)  数据有效性检查跳过
  6. sub_14013366A @ 0x132A6A -> 90*6 (NOP)  @ 符号检查跳过
  7. sub_140133678 @ 0x132A78 -> 90*6 (NOP)  @ 位置检查跳过
  8. sub_14013180B @ 0x130C0B -> D4 03 00 00  版本号 Standard->Professional

使用方法：
  python bandizip_patcher.py           # 交互模式
  python bandizip_patcher.py patch     # 直接 patch
  python bandizip_patcher.py restore   # 恢复原始
  python bandizip_patcher.py status    # 检查状态
"""

import os
import sys
import shutil
import winreg

# ============ 配置 ============
BANDIZIP_DIR = r'D:\Apps\Bandizip'
EXE_PATH = os.path.join(BANDIZIP_DIR, 'Bandizip.exe')
BACKUP_PATH = EXE_PATH + '.bak'
REG_KEY = r'SOFTWARE\Bandizip'
REG_VALUE = 'Edition'
REG_DATA = 'PRO'

# Patch 定义: (文件偏移, 原始字节, 补丁字节, 描述)
PATCHES = [
    (0xD0CF0,  b'\x48\x89\x5C\x24\x08\x55', b'\xB0\x01\xC3',
     'sub_1400D18F0 (online verify -> return 1)'),
    (0xCED80,  b'\x48\x89\x5C\x24\x18\x55', b'\xB0\x01\xC3',
     'sub_1400CF980 (registry write -> return 1)'),
    (0xCE870,  b'\x4C\x8B\xDC\x49\x89\x5B', b'\xB0\x01\xC3',
     'sub_1400CF470 (Edition check -> return 1)'),
    (0x132A48, b'\x0F\x85\x4B\x06\x00\x00', b'\x90\x90\x90\x90\x90\x90',
     'NOP: register code length check'),
    (0x132A55, b'\x0F\x8C\x3E\x06\x00\x00', b'\x90\x90\x90\x90\x90\x90',
     'NOP: data validity check'),
    (0x132A6A, b'\x0F\x84\x29\x06\x00\x00', b'\x90\x90\x90\x90\x90\x90',
     'NOP: @ symbol check'),
    (0x132A78, b'\x0F\x8E\x1B\x06\x00\x00', b'\x90\x90\x90\x90\x90\x90',
     'NOP: @ position check'),
    (0x130C0B, b'\x98\x00\x00\x00',         b'\xD4\x03\x00\x00',
     'Version: Standard(0x98) -> Professional(0x3D4)'),
]


def is_patched():
    """检查是否已 patch"""
    if not os.path.exists(EXE_PATH):
        return False
    with open(EXE_PATH, 'rb') as f:
        for offset, orig, patch, desc in PATCHES:
            f.seek(offset)
            current = f.read(len(patch))
            if current != patch:
                return False
    return True


def is_backup_exists():
    """检查备份是否存在"""
    return os.path.exists(BACKUP_PATH)


def is_bandizip_running():
    """检查 Bandizip 是否正在运行"""
    try:
        import subprocess
        result = subprocess.run(['tasklist', '/FI', 'IMAGENAME eq Bandizip.exe'],
                                capture_output=True, text=True, timeout=5)
        return 'Bandizip.exe' in result.stdout
    except Exception:
        return False


def kill_bandizip():
    """关闭 Bandizip 进程"""
    try:
        import subprocess
        subprocess.run(['taskkill', '/F', '/IM', 'Bandizip.exe'],
                       capture_output=True, timeout=5)
        import time
        time.sleep(2)
        return True
    except Exception:
        return False


def backup():
    """备份原始文件"""
    if is_backup_exists():
        print('  [OK] Backup already exists: ' + BACKUP_PATH)
        return True
    try:
        shutil.copy2(EXE_PATH, BACKUP_PATH)
        print('  [OK] Backup created: ' + BACKUP_PATH)
        return True
    except PermissionError:
        print('  [!] Permission denied. Run as Administrator.')
        return False
    except Exception as e:
        print('  [!] Backup failed: ' + str(e))
        return False


def apply_patches():
    """应用所有 patch"""
    try:
        with open(EXE_PATH, 'r+b') as f:
            for offset, orig, patch, desc in PATCHES:
                f.seek(offset)
                current = f.read(len(patch))
                if current == patch:
                    print('  [SKIP] Already patched: ' + desc)
                    continue
                f.seek(offset)
                f.write(patch)
                print('  [OK] ' + desc)
        return True
    except PermissionError:
        print('  [!] Permission denied. Close Bandizip and run as Administrator.')
        return False
    except Exception as e:
        print('  [!] Patch failed: ' + str(e))
        return False


def restore():
    """恢复原始文件"""
    if not is_backup_exists():
        print('  [!] No backup found: ' + BACKUP_PATH)
        return False
    try:
        shutil.copy2(BACKUP_PATH, EXE_PATH)
        print('  [OK] Restored from backup: ' + EXE_PATH)
        return True
    except PermissionError:
        print('  [!] Permission denied. Close Bandizip and run as Administrator.')
        return False
    except Exception as e:
        print('  [!] Restore failed: ' + str(e))
        return False


def set_registry():
    """设置注册表 Edition = PRO"""
    try:
        with winreg.CreateKeyEx(winreg.HKEY_LOCAL_MACHINE, REG_KEY, 0,
                                winreg.KEY_SET_VALUE) as key:
            winreg.SetValueEx(key, REG_VALUE, 0, winreg.REG_SZ, REG_DATA)
        print('  [OK] Registry: HKLM\\' + REG_KEY + '\\' + REG_VALUE + ' = ' + REG_DATA)
        return True
    except PermissionError:
        print('  [!] Registry write denied. Run as Administrator.')
        return False
    except Exception as e:
        print('  [!] Registry write failed: ' + str(e))
        return False


def check_status():
    """检查当前状态"""
    print('=' * 50)
    print('  Bandizip Patcher - Status')
    print('=' * 50)

    # 文件存在
    if os.path.exists(EXE_PATH):
        print('  [OK] Bandizip.exe found: ' + EXE_PATH)
    else:
        print('  [!] Bandizip.exe not found: ' + EXE_PATH)
        return

    # 备份状态
    if is_backup_exists():
        print('  [OK] Backup exists')
    else:
        print('  [!] No backup')

    # Patch 状态
    patched_count = 0
    total = len(PATCHES)
    if os.path.exists(EXE_PATH):
        with open(EXE_PATH, 'rb') as f:
            for offset, orig, patch, desc in PATCHES:
                f.seek(offset)
                current = f.read(len(patch))
                if current == patch:
                    patched_count += 1
                    status = '[PATCHED]'
                elif current == orig:
                    status = '[ORIGINAL]'
                else:
                    status = '[UNKNOWN]'
                print('  ' + status + ' 0x{:06X}: '.format(offset) + desc)

    print('')
    print('  Patched: ' + str(patched_count) + '/' + str(total))

    # 注册表状态
    try:
        with winreg.OpenKey(winreg.HKEY_LOCAL_MACHINE, REG_KEY) as key:
            val, _ = winreg.QueryValueEx(key, REG_VALUE)
            print('  [Registry] Edition = ' + val)
    except Exception:
        print('  [Registry] Edition not set')

    # 进程状态
    if is_bandizip_running():
        print('  [WARNING] Bandizip is running! Close it before patching.')
    else:
        print('  [OK] Bandizip is not running')

    print('=' * 50)


def do_patch():
    """执行完整 patch 流程"""
    print('=' * 50)
    print('  Bandizip Patcher - Apply')
    print('=' * 50)

    if not os.path.exists(EXE_PATH):
        print('  [!] Bandizip.exe not found: ' + EXE_PATH)
        return False

    if is_bandizip_running():
        print('  [..] Bandizip is running, closing...')
        if not kill_bandizip():
            print('  [!] Cannot close Bandizip. Close it manually.')
            return False

    print('\n  [1/3] Backup...')
    if not backup():
        return False

    print('\n  [2/3] Patching...')
    if not apply_patches():
        return False

    print('\n  [3/3] Registry...')
    set_registry()

    print('\n' + '=' * 50)
    print('  [DONE] All patches applied successfully!')
    print('  Use keygen to generate a product key.')
    print('=' * 50)
    return True


def do_restore():
    """执行恢复流程"""
    print('=' * 50)
    print('  Bandizip Patcher - Restore')
    print('=' * 50)

    if is_bandizip_running():
        print('  [..] Bandizip is running, closing...')
        if not kill_bandizip():
            print('  [!] Cannot close Bandizip. Close it manually.')
            return False

    print('\n  [1/1] Restoring...')
    if restore():
        print('\n' + '=' * 50)
        print('  [DONE] Restored to original.')
        print('=' * 50)
        return True
    return False


def main():
    print('=' * 50)
    print('  Bandizip Professional Patcher v1.0')
    print('=' * 50)
    print('')

    if len(sys.argv) > 1:
        cmd = sys.argv[1].lower()
        if cmd == 'patch':
            do_patch()
            return
        elif cmd == 'restore':
            do_restore()
            return
        elif cmd == 'status':
            check_status()
            return
        else:
            print('  Usage: python bandizip_patcher.py [patch|restore|status]')
            return

    # 交互模式
    print('  Commands:')
    print('    1. Patch   - Apply all patches')
    print('    2. Restore - Restore original file')
    print('    3. Status  - Check current status')
    print('    4. Exit')
    print('')

    try:
        choice = input('  Select [1-4]: ').strip()
    except EOFError:
        choice = '1'

    if choice == '1':
        do_patch()
    elif choice == '2':
        do_restore()
    elif choice == '3':
        check_status()
    else:
        print('  Bye!')


if __name__ == '__main__':
    main()