import os
import re
import sys
import time
import random
import platform
import subprocess
from ipaddress import IPv4Address, ip_address
from stat import S_IXUSR

import psutil
import tenacity
import requests
from pathlib import Path
from records import Record, RecordCollection
from dns.resolver import Resolver

import config
from common.domain import Domain
from config import logger

user_agents = [
    'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 '
    '(KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36',
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 '
    '(KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36',
    'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 '
    '(KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36',
    'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:54.0) Gecko/20100101 Firefox/68.0',
    'Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:61.0) '
    'Gecko/20100101 Firefox/68.0',
    'Mozilla/5.0 (X11; Linux i586; rv:31.0) Gecko/20100101 Firefox/68.0']


def match_subdomain(domain, text, distinct=True):
    """
    匹配text中domain的子域名

    :param str domain: 域名
    :param str text: 响应文本
    :param bool distinct: 结果去重
    :return: 匹配结果
    :rtype: set or list
    """
    regexp = r'(?:[a-z0-9](?:[a-z0-9\-]{0,61}[a-z0-9])?\.){0,}' \
             + domain.replace('.', r'\.')
    result = re.findall(regexp, text, re.I)
    if not result:
        return set()
    deal = map(lambda s: s.lower(), result)
    if distinct:
        return set(deal)
    else:
        return list(deal)


def gen_random_ip():
    """
    生成随机的点分十进制的IP字符串
    """
    while True:
        ip = IPv4Address(random.randint(0, 2 ** 32 - 1))
        if ip.is_global:
            return ip.exploded


def gen_fake_header():
    """
    生成伪造请求头
    """
    ua = random.choice(user_agents)
    ip = gen_random_ip()
    headers = {
        'Accept': 'text/html,application/xhtml+xml,'
                  'application/xml;q=0.9,*/*;q=0.8',
        'Accept-Encoding': 'gzip, deflate, br',
        'Accept-Language': 'en-US,en;q=0.9,zh-CN;q=0.8,zh;q=0.7',
        'Cache-Control': 'max-age=0',
        'Connection': 'close',
        'DNT': '1',
        'Referer': 'https://www.google.com/',
        'Upgrade-Insecure-Requests': '1',
        'User-Agent': ua,
        'X-Forwarded-For': ip,
        'X-Real-IP': ip
    }
    return headers


def get_random_proxy():
    """
    获取随机代理
    """
    try:
        return random.choice(config.proxy_pool)
    except IndexError:
        return None


def split_list(ls, size):
    """
    将ls列表按size大小划分并返回新的划分结果列表

    :param list ls: 要划分的列表
    :param int size: 划分大小
    :return 划分结果

    >>> split_list([1, 2, 3, 4], 3)
    [[1, 2, 3], [4]]
    """
    if size == 0:
        return ls
    return [ls[i:i + size] for i in range(0, len(ls), size)]


def get_domains(target):
    """
    获取域名

    :param set or str target:
    :return: 域名集合
    """
    domains = list()
    logger.log('DEBUG', f'正在获取域名')
    if isinstance(target, (set, tuple)):
        domains = list(target)
    elif isinstance(target, list):
        domains = target
    elif isinstance(target, str):
        path = Path(target)
        if path.exists() and path.is_file():
            with open(target, encoding='utf-8', errors='ignore') as file:
                for line in file:
                    line = line.lower().strip()
                    domain = Domain(line).match()
                    if domain:
                        domains.append(domain)
        else:
            target = target.lower().strip()
            domain = Domain(target).match()
            if domain:
                domains.append(domain)
    count = len(domains)
    if count == 0:
        logger.log('FATAL', f'获取到{count}个域名')
        exit(1)
    logger.log('INFOR', f'获取到{count}个域名')
    return domains


def get_semaphore():
    """
    获取查询并发值

    :return: 并发整型值
    """
    system = platform.system()
    if system == 'Windows':
        return 800
    elif system == 'Linux':
        return 800
    elif system == 'Darwin':
        return 800


def check_dir(dir_path):
    if not dir_path.exists():
        logger.log('INFOR', f'不存在{dir_path}目录将会新建')
        dir_path.mkdir(parents=True, exist_ok=True)


def check_path(path, name, format):
    """
    检查结果输出目录路径

    :param path: 保存路径
    :param name: 导出名字
    :param format: 保存格式
    :return: 保存路径
    """
    filename = f'{name}.{format}'
    default_path = config.result_save_dir.joinpath(filename)
    if isinstance(path, str):
        path = repr(path).replace('\\', '/')  # 将路径中的反斜杠替换为正斜杠
        path = path.replace('\'', '')  # 去除多余的转义
    else:
        path = default_path
    path = Path(path)
    if not path.suffix:  # 输入是目录的情况
        path = path.joinpath(filename)
    parent_dir = path.parent
    if not parent_dir.exists():
        logger.log('ALERT', f'不存在{parent_dir}目录将会新建')
        parent_dir.mkdir(parents=True, exist_ok=True)
    if path.exists():
        logger.log('ALERT', f'存在{path}文件将会覆盖')
    return path


def check_format(format, count):
    """
    检查导出格式

    :param format: 传入的导出格式
    :param count: 数量
    :return: 导出格式
    """
    formats = ['rst', 'csv', 'tsv', 'json', 'yaml', 'html',
               'jira', 'xls', 'xlsx', 'dbf', 'latex', 'ods']
    if format == 'xls' and count > 65000:
        logger.log('ALERT', 'xls文件限制为最多65000行')
        logger.log('ALERT', '使用xlsx格式导出')
        return 'xlsx'
    if format in formats:
        return format
    else:
        logger.log('ALERT', f'不支持{format}格式导出')
        logger.log('ALERT', '默认使用csv格式导出')
        return 'csv'


def save_data(path, data):
    """
    保存数据到文件

    :param path: 保存路径
    :param data: 待存数据
    :return: 保存成功与否
    """
    try:
        with open(path, 'w', encoding="utf-8",
                  errors='ignore', newline='') as file:
            file.write(data)
            return True
    except TypeError:
        with open(path, 'wb') as file:
            file.write(data)
            return True
    except Exception as e:
        logger.log('ERROR', e.args)
        return False


def check_response(method, resp):
    """
    检查响应 输出非正常响应返回json的信息

    :param method: 请求方法
    :param resp: 响应体
    :return: 是否正常响应
    """
    if resp.status_code == 200 and resp.content:
        return True
    logger.log('ALERT', f'{method} {resp.url} {resp.status_code} - '
                        f'{resp.reason} {len(resp.content)}')
    content_type = resp.headers.get('Content-Type')
    if content_type and 'json' in content_type and resp.content:
        try:
            msg = resp.json()
        except Exception as e:
            logger.log('DEBUG', e.args)
        else:
            logger.log('ALERT', msg)
    return False


def mark_subdomain(old_data, now_data):
    """
    标记新增子域并返回新的数据集

    :param list old_data: 之前子域数据
    :param list now_data: 现在子域数据
    :return: 标记后的的子域数据
    :rtype: list
    """
    # 第一次收集子域的情况
    mark_data = now_data.copy()
    if not old_data:
        for index, item in enumerate(mark_data):
            item['new'] = 1
            mark_data[index] = item
        return mark_data
    # 非第一次收集子域的情况
    old_subdomains = {item.get('subdomain') for item in old_data}
    for index, item in enumerate(mark_data):
        subdomain = item.get('subdomain')
        if subdomain in old_subdomains:
            item['new'] = 0
        else:
            item['new'] = 1
        mark_data[index] = item
    return mark_data


def remove_invalid_string(string):
    # Excel文件中单元格值不能直接存储以下非法字符
    return re.sub(r'[\000-\010]|[\013-\014]|[\016-\037]', r'', string)


def check_value(values):
    if not isinstance(values, dict):
        return values
    for key, value in values.items():
        if value is None:
            continue
        if isinstance(value, str) and len(value) > 32767:
            # Excel文件中单元格值长度不能超过32767
            values[key] = value[:32767]
    return values


def export_all(format, path, datas):
    """
    将所有结果数据导出到一个文件

    :param str format: 导出文件格式
    :param str path: 导出文件路径
    :param list datas: 待导出的结果数据
    """
    format = check_format(format, len(datas))
    timestamp = get_timestring()
    name = f'all_subdomain_result_{timestamp}'
    path = check_path(path, name, format)
    logger.log('INFOR', f'所有主域的子域结果 {path}')
    row_list = list()
    for row in datas:
        if 'header' in row:
            row.pop('header')
        if 'response' in row:
            row.pop('response')
        keys = row.keys()
        values = row.values()
        if format in {'xls', 'xlsx'}:
            values = check_value(values)
        row_list.append(Record(keys, values))
    rows = RecordCollection(iter(row_list))
    content = rows.export(format)
    save_data(path, content)


def dns_resolver():
    """
    dns解析器
    """
    resolver = Resolver()
    resolver.nameservers = config.resolver_nameservers
    resolver.timeout = config.resolver_timeout
    resolver.lifetime = config.resolver_lifetime
    return resolver


def dns_query(qname, qtype):
    """
    查询域名DNS记录

    :param str qname: 待查域名
    :param str qtype: 查询类型
    :return: 查询结果
    """
    logger.log('TRACE', f'尝试查询{qname}的{qtype}记录')
    resolver = dns_resolver()
    try:
        answer = resolver.query(qname, qtype)
    except Exception as e:
        logger.log('TRACE', e.args)
        logger.log('TRACE', f'查询{qname}的{qtype}记录失败')
        return None
    else:
        logger.log('TRACE', f'查询{qname}的{qtype}记录成功')
        return answer


def get_timestamp():
    return int(time.time())


def get_timestring():
    return time.strftime('%Y%m%d_%H%M%S', time.localtime(time.time()))


def get_classname(classobj):
    return classobj.__class__.__name__


def python_version():
    return sys.version


def count_alive(data):
    return len(list(filter(lambda item: item.get('alive') == 1, data)))


def get_subdomains(data):
    return set(map(lambda item: item.get('subdomain'), data))


def set_id_none(data):
    new_data = []
    for item in data:
        item['id'] = None
        new_data.append(item)
    return new_data


def get_filtered_data(data):
    filtered_data = []
    for item in data:
        valid = item.get('resolve')
        if valid == 0:
            filtered_data.append(item)
    return filtered_data


def get_sample_banner(headers):
    temp_list = []
    server = headers.get('Server')
    if server:
        temp_list.append(server)
    via = headers.get('Via')
    if via:
        temp_list.append(via)
    power = headers.get('X-Powered-By')
    if power:
        temp_list.append(power)
    banner = ','.join(temp_list)
    return banner


def check_ip_public(ip_list):
    for ip_str in ip_list:
        ip = ip_address(ip_str)
        if not ip.is_global:
            return 0
    return 1


def ip_is_public(ip_str):
    ip = ip_address(ip_str)
    if not ip.is_global:
        return 0
    return 1


def get_process_num():
    process_num = config.brute_process_num
    if isinstance(process_num, int):
        return min(os.cpu_count(), process_num)
    else:
        return 1


def get_coroutine_num():
    coroutine_num = config.resolve_coroutine_num
    if isinstance(coroutine_num, int):
        return max(64, coroutine_num)
    elif coroutine_num is None:
        mem = psutil.virtual_memory()
        total_mem = mem.total
        g_size = 1024 * 1024 * 1024
        if total_mem <= 1 * g_size:
            return 64
        elif total_mem <= 2 * g_size:
            return 128
        elif total_mem <= 4 * g_size:
            return 256
        elif total_mem <= 8 * g_size:
            return 512
        elif total_mem <= 16 * g_size:
            return 1024
        else:
            return 2048
    else:
        return 64


def uniq_dict_list(dict_list):
    return list(filter(lambda name: dict_list.count(name) == 1, dict_list))


def delete_file(*paths):
    for path in paths:
        try:
            path.unlink()
        except Exception as e:
            logger.log('ERROR', e.args)


@tenacity.retry(stop=tenacity.stop_after_attempt(2))
def check_net():
    logger.log('INFOR', '正在检查网络环境')
    url = 'http://www.example.com/'
    logger.log('INFOR', f'访问地址 {url}')
    try:
        rsp = requests.get(url)
    except Exception as e:
        logger.log('ERROR', e.args)
        logger.log('ALERT', '访问外网出错 重新检查中')
        raise tenacity.TryAgain
    if rsp.status_code != 200:
        logger.log('ALERT', f'{rsp.request.method} {rsp.request.url} '
                            f'{rsp.status_code} {rsp.reason}')
        logger.log('ALERT', '不能正常访问外网 重新检查中')
        raise tenacity.TryAgain
    logger.log('INFOR', '能正常访问外网')


def check_pre():
    logger.log('INFOR', '正在检查依赖环境')
    system = platform.system()
    implementation = platform.python_implementation()
    version = platform.python_version()
    if implementation != 'CPython':
        logger.log('FATAL', f'OneForAll只在CPython下测试通过')
        exit(1)
    if version < '3.6':
        logger.log('FATAL', 'OneForAll需要Python 3.6以上版本')
        exit(1)
    if system == 'Windows' and implementation == 'CPython':
        if version < '3.8':
            logger.log('FATAL', 'OneForAll在Windows系统运行时需要Python 3.8以上版本')
            exit(1)
    if system in {"Linux", "Darwin"}:
        try:
            import uvloop
        except ImportError:
            logger.log('ALERT', f'请手动安装uvloop的Python库加速子域请求')


def check_env():
    logger.log('INFOR', '正在检查运行环境')
    try:
        check_net()
    except Exception as e:
        logger.log('DEBUG', e.args)
        logger.log('FATAL', '不能正常访问外网')
        exit(1)
    check_pre()


def get_maindomain(domain):
    return Domain(domain).registered()


def call_massdns(massdns_path, dict_path, ns_path, output_path, log_path,
                 query_type='A', process_num=1, concurrent_num=10000,
                 quiet_mode=False):
    logger.log('INFOR', f'开始执行massdns')
    quiet = ''
    if quiet_mode:
        quiet = '--quiet'
    status_format = config.brute_status_format
    socket_num = config.brute_socket_num
    resolve_num = config.brute_resolve_num
    cmd = f'{massdns_path} {quiet} --status-format {status_format} ' \
          f'--processes {process_num} --socket-count {socket_num} ' \
          f'--hashmap-size {concurrent_num} --resolvers {ns_path} ' \
          f'--resolve-count {resolve_num} --type {query_type} ' \
          f'--flush --output J --outfile {output_path} ' \
          f'--error-log {log_path} {dict_path}'
    logger.log('INFOR', f'执行命令 {cmd}')
    subprocess.run(args=cmd, shell=True)
    logger.log('INFOR', f'结束执行massdns')


def get_massdns_path(massdns_dir):
    path = config.brute_massdns_path
    if path:
        return path
    system = platform.system().lower()
    machine = platform.machine().lower()
    name = f'massdns_{system}_{machine}'
    if system == 'windows':
        name = name + '.exe'
        if machine == 'amd64':
            massdns_dir = massdns_dir.joinpath('windows', 'x64')
        else:
            massdns_dir = massdns_dir.joinpath('windows', 'x84')
    path = massdns_dir.joinpath(name)
    path.chmod(S_IXUSR)
    if not path.exists():
        logger.log('FATAL', '暂无该系统平台及架构的massdns')
        logger.log('INFOR', '请尝试自行编译massdns并在配置里指定路径')
        exit(0)
    return path
