#!/usr/bin/python3
# -*- coding: utf-8 -*-

import xml.etree.ElementTree as ET
import sys
import re
import shutil

from IPacker import IPacker
from lib.utils import *


class PackerVMProtect(IPacker):
    default_vmprotect_args = ''
    vmprotect_cmdline_template = '<command> <infile> <outfile> <options>'

    metadata = {
        'author': 'vmpsoft',
        'url': 'https://vmpsoft.com',
        'licensing': 'commercial',
        'description': 'VMProtect protects x86/x64 code by virtualizing it in complex VM environments',
        'type': PackerType.PEProtector,
        'input': ['PE', ],
        'output': ['PE', ],
    }

    def __init__(self, logger, options):
        self.vmprotect_args = PackerVMProtect.default_vmprotect_args
        self.logger = logger
        self.options = options

    @staticmethod
    def get_name():
        return 'VMProtect'

    def help(self, parser):
        if parser != None:
            parser.add_argument('--vmprotect-path', metavar='PATH', dest='vmprotect_path',
                                help='(required) Path to vmprotect executable.')

            parser.add_argument('--vmprotect-project-file', metavar='PATH', dest='vmprotect_project_file',
                                help='(required) Path to .NET Reactor .nrproj project file.')

            parser.add_argument('--vmprotect-args', metavar='ARGS', dest='vmprotect_args',
                                help='Optional vmprotect-specific arguments to pass during compression.')

        else:
            if not self.options['config']:
                self.logger.fatal('Config file not specified!')

            self.options['vmprotect_path'] = configPath( self.options['vmprotect_path'])
            self.options['vmprotect_project_file'] = os.path.abspath(configPath( self.options['vmprotect_project_file']))

            if not os.path.isfile(self.options['vmprotect_path']):
                self.logger.fatal('--vmprotect-path option must be specified!')

            if 'vmprotect_args' in self.options.keys() and self.options['vmprotect_args'] != None \
                    and len(self.options['vmprotect_args']) > 0:
                self.vmprotect_args += ' ' + self.options['vmprotect_args']

    @ensureInputFileIsPE
    def process(self, arch, infile, outfile):
        out = ''
        cwd = ''
        try:
            cwd = os.getcwd()
            base = os.path.dirname(self.options['vmprotect_path'])

            self.logger.dbg('changed working directory to "{}"'.format(base))
            os.chdir(base)

            out = shell(self.logger, IPacker.build_cmdline(
                PackerVMProtect.vmprotect_cmdline_template,
                os.path.basename(self.options['vmprotect_path']),
                self.vmprotect_args +
                ' -pf "{}"'.format(self.options['vmprotect_project_file']),
                infile,
                outfile
            ), output=self.options['verbose'] or self.options['debug'], timeout=self.options['timeout'])

        except Exception as e:
            raise

        finally:
            if len(cwd) > 0:
                self.logger.dbg(
                    'reverted to original working directory "{}"'.format(cwd))
                os.chdir(cwd)

        status = os.path.isfile(outfile)

        if not status:
            self.logger.err('Something went wrong: there is no output artefact ({})!\n'.format(
                outfile
            ))

            if len(out) > 0 and not (self.options['verbose'] or self.options['debug']):
                self.logger.info(f'''{PackerVMProtect.get_name()} returned:
----------------------------------------
{out}
----------------------------------------
''', forced=True, noprefix=True)

        return status