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

# 每3分钟检测一次github是否有新的cve漏洞提交记录，若有则通过server酱和钉钉机器人推送（二者配置一个即可）
# 建议使用screen命令运行在自己的linux vps后台上，就可以愉快的接收各种cve了

# https://my.oschina.net/u/4581868/blog/4380482
# https://github.com/kiang70/Github-Monitor

import requests, re, time
import dingtalkchatbot.chatbot as cb
import datetime
import hashlib
import json
from lxml import etree


# 创建md5对象
def nmd5(str):
    m = hashlib.md5()
    b = str.encode(encoding='utf-8')
    m.update(b)
    str_md5 = m.hexdigest()
    return  str_md5

# 有道翻译
def translate(word):
    headerstr = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36'
    bv = nmd5(headerstr)
    lts = str(round(time.time()*1000))
    salt = lts + '90'

    # 如果翻译失败，{'errorCode': 50}  请查看 fanyi.min.js: https://shared.ydstatic.com/fanyi/newweb/v1.1.7/scripts/newweb/fanyi.min.js
    # 搜索 fanyideskweb   sign: n.md5("fanyideskweb" + e + i + "Y2FYu%TNSbMCxc3t2u^XT")  ，Y2FYu%TNSbMCxc3t2u^XT是否改变，替换即可
    strexample = 'fanyideskweb' + word + salt + 'Y2FYu%TNSbMCxc3t2u^XT'   
    sign = nmd5(strexample)

    data = {
        'i': word,
        'from': 'AUTO',
        'to': 'AUTO',
        'smartresult': 'dict',
        'client': 'fanyideskweb',
        'salt':salt,
        'sign':sign,
        'lts': lts,
        'bv': bv,
        'doctype': 'json',
        'version': '2.1',
        'keyfrom': 'fanyi.web',
        'action': 'FY_BY_CLICKBUTTION',
    }
    url='http://fanyi.youdao.com/translate_o?smartresult=dict&smartresult=rule'

    header={
        'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36',
        'Referer':'http://fanyi.youdao.com/',
        'Origin': 'http://fanyi.youdao.com',
        'Content-Type':'application/x-www-form-urlencoded; charset=UTF-8',
        'X-Requested-With':'XMLHttpRequest',
        'Accept':'application/json, text/javascript, */*; q=0.01',
        'Accept-Encoding':'gzip, deflate',
        'Accept-Language':'zh-CN,zh;q=0.9',
        'Connection': 'keep-alive',
        'Host': 'fanyi.youdao.com',
        'cookie':'_ntes_nnid=937f1c788f1e087cf91d616319dc536a,1564395185984; OUTFOX_SEARCH_USER_ID_NCOO=; OUTFOX_SEARCH_USER_ID=-10218418@11.136.67.24; JSESSIONID=; ___rl__test__cookies=1'
    }

    res = requests.post(url=url, data=data, headers=header)
    t = res.content.decode('utf8')

    # 把返回来的json字符串解析成字典
    result_dict = json.loads(t)

    result = ""
    for json_str in result_dict['translateResult'][0]:
        tgt = json_str['tgt']
        result += tgt
    return result


def getNews():
    try:
        # 抓取本年的
        year = datetime.datetime.now().year
        api = "https://api.github.com/search/repositories?q=CVE-{}&sort=updated".format(year)
        req = requests.get(api).text
        cve_total_count = re.findall('"total_count":*.{1,10}"incomplete_results"',req)[0][14:17]
        cve_description = re.findall('"description":*.{1,200}"fork"',req)[0].replace("\",\"fork\"",'').replace("\"description\":\"",'')
        cve_url = re.findall('"svn_url":*.{1,200}"homepage"',req)[0].replace("\",\"homepage\"",'').replace("\"svn_url\":\"",'')
        # 不推送 fork
        if cve_description != '"description":null,"fork"':
            return cve_total_count, cve_description, cve_url

    except Exception as e:
        print (e, "github链接不通")

# 钉钉
def dingding(text, msg):
    # 将此处换为钉钉机器人的api
    webhook = 'xxxxx'
    ding = cb.DingtalkChatbot(webhook)
    ding.send_text(msg = '{}\r\n{}'.format(text, msg), is_at_all=False)

# server酱  http://sc.ftqq.com/?c=code
def server(text, msg):
    # 将 xxxx 换成自己的server SCKEY
    uri = 'https://sc.ftqq.com/xxxx.send?text={}&desp={}'.format(text, msg)
    requests.get(uri)

# 添加Telegram Bot推送支持
def tgbot(text,msg):
    import telegram
    # Your Telegram Bot Token
    bot = telegram.Bot(token='123456:aaa-sdasdsa')
    group_id='Your Group ID'
    bot.send_message(chat_id=group_id,text='{}\r\n{}'.format(text,msg))


# 通过检查name 和 description 中是否存在test字样，排除test
def regular(req):
    cve_name = re.findall('"name":*.{1,200}"full_name"', req)[0].replace("\"name\":\"",'').replace("\",\"full_name\"",'')
    cve_description = re.findall('"description":*.{1,200}"fork"', req)[0].replace("\",\"fork\"", '').replace(
        "\"description\":\"", '')

    if cve_name.lower().find('test') == -1 and cve_description.lower().find('test') == -1:
        return True
    return False

# 获取cve 名字 ，
def get_cve_name(req):
    cve_name = re.findall('"name":*.{1,200}"full_name"', req)[0].replace("\"name\":\"", '').replace("\",\"full_name\"",'')
    return cve_name
# 根据cve 名字，获取描述，并翻译
def get_cve_des_zh(cve):
    query_cve_url = "https://cve.mitre.org/cgi-bin/cvename.cgi?name=" + cve
    response = requests.get(query_cve_url)
    html = etree.HTML(response.text)
    des = html.xpath('//*[@id="GeneratedTable"]/table//tr[4]/td/text()')[0].strip()
    return translate(des)

def sendNews():
    while True:
        try:
            print("cve 监控中 ...")
            # 抓取本年的
            year = datetime.datetime.now().year
            api = "https://api.github.com/search/repositories?q=CVE-{}&sort=updated".format(year)
            # 请求API
            req = requests.get(api).text
            # 正则获取
            total_count = re.findall('"total_count":*.{1,10}"incomplete_results"', req)[0][14:17]

            # 监控时间间隔3分钟
            time.sleep(180)
            # 推送正文内容
            # 推送标题
            text = r'有新的CVE送达！'
            regular(req)

            # 检查name 和 description 中是否存在test字样 和 是否更新
            if regular(req) and total_count != getNews()[0]:
                cve = get_cve_name(req)
                cve_zh = get_cve_des_zh(cve)
                msg = "CVE编号："+ str(getNews()[1]) + "\r\n"+"Github地址："+ str(getNews()[2]) + "\r\n" + "CVE描述："+ cve_zh
                
                # 三选一即可，没配置的 注释或者删掉
                # server(text, msg)
                dingding(text, msg)
                # tgbot(text,msg)
                print(msg)
            else:
                pass
        except Exception as e:
            raise e


if __name__ == '__main__':
    sendNews()