main.py

import json
import time
import os
from json import loads as json_loads
from os import path as os_path, getenv
from sys import exit as sys_exit
from getpass import getpass
import re
import base64
import easyocr
import io
import numpy
from PIL import Image
from PIL import ImageEnhance

from requests import session, post, adapters
import urllib3, ssl
adapters.DEFAULT_RETRIES = 5

class CustomHttpAdapter (adapters.HTTPAdapter):
    # "Transport adapter" that allows us to use custom ssl_context.

    def __init__(self, ssl_context=None, **kwargs):
        self.ssl_context = ssl_context
        super().__init__(**kwargs)

    def init_poolmanager(self, connections, maxsize, block=False):
        self.poolmanager = urllib3.poolmanager.PoolManager(
            num_pools=connections, maxsize=maxsize,
            block=block, ssl_context=self.ssl_context)

def get_legacy_session():
    ctx = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
    ctx.options |= 0x4  # OP_LEGACY_SERVER_CONNECT
    mySession = session()
    mySession.mount('https://', CustomHttpAdapter(ctx))
    return mySession

class Fudan:
    """
    建立与复旦服务器的会话，执行登录/登出操作
    """
    UA = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0"

    # 初始化会话
    def __init__(self,
                 uid, psw,
                 url_login='https://uis.fudan.edu.cn/authserver/login',
                 url_code="https://zlapp.fudan.edu.cn/backend/default/code"):
        """
        初始化一个session，及登录信息
        :param uid: 学号
        :param psw: 密码
        :param url_login: 登录页，默认服务为空
        """
        self.session = get_legacy_session()
        self.session.keep_alive = False
        self.session.headers['User-Agent'] = self.UA
        self.url_login = url_login
        self.url_code = url_code

        self.uid = uid
        self.psw = psw

    def _page_init(self):
        """
        检查是否能打开登录页面
        :return: 登录页page source
        """
        print("◉Initiating——", end='')
        page_login = self.session.get(self.url_login)

        print("return status code",
              page_login.status_code)

        if page_login.status_code == 200:
            print("◉Initiated——", end="")
            return page_login.text
        else:
            print("◉Fail to open Login Page, Check your Internet connection\n")
            self.close()

    def login(self):
        """
        执行登录
        """
        page_login = self._page_init()

        print("getting tokens")
        data = {
            "username": self.uid,
            "password": self.psw,
            "service": "https://zlapp.fudan.edu.cn/site/ncov/fudanDaily"
        }

        # 获取登录页上的令牌
        result = re.findall(
            '<input type="hidden" name="([a-zA-Z0-9\-_]+)" value="([a-zA-Z0-9\-_]+)"/?>', page_login)
        # print(result)
        # result 是一个列表，列表中的每一项是包含 name 和 value 的 tuple，例如
        # [('lt', 'LT-6711210-Ia3WttcMvLBWNBygRNHdNzHzB49jlQ1602983174755-7xmC-cas'), ('dllt', 'userNamePasswordLogin'), ('execution', 'e1s1'), ('_eventId', 'submit'), ('rmShown', '1')]
        data.update(
            result
        )

        headers = {
            "Host": "uis.fudan.edu.cn",
            "Origin": "https://uis.fudan.edu.cn",
            "Referer": self.url_login,
            "User-Agent": self.UA
        }

        print("◉Login ing——", end="")
        post = self.session.post(
            self.url_login,
            data=data,
            headers=headers,
            allow_redirects=False)

        print("return status code", post.status_code)

        if post.status_code == 302:
            print("\n***********************"
                  "\n◉登录成功"
                  "\n***********************\n")
        else:
            print("◉登录失败，请检查账号信息")
            self.close()

    def logout(self):
        """
        执行登出
        """
        exit_url = 'https://uis.fudan.edu.cn/authserver/logout?service=/authserver/login'
        expire = self.session.get(exit_url).headers.get('Set-Cookie')
        # print(expire)

        if '01-Jan-1970' in expire:
            print("◉登出完毕")
        else:
            print("◉登出异常")

    def close(self, exit_code=0):
        """
        执行登出并关闭会话
        """
        self.logout()
        self.session.close()
        print("◉关闭会话")
        print("************************")
        sys_exit(exit_code)


class Zlapp(Fudan):
    last_info = ''

    def check(self):
        """
        检查
        """
        print("◉检测是否已提交")
        get_info = self.session.get(
            'https://zlapp.fudan.edu.cn/ncov/wap/fudan/get-info')
        last_info = get_info.json()

        print("◉上一次提交日期为:", last_info["d"]["info"]["date"])

        position = last_info["d"]["info"]['geo_api_info']
        position = json_loads(position)

        print("◉上一次提交地址为:", position['formattedAddress'])
        # print("◉上一次提交GPS为", position["position"])
        # print(last_info)
        
        # 改为上海时区
        os.environ['TZ'] = 'Asia/Shanghai'
        time.tzset()
        today = time.strftime("%Y%m%d", time.localtime())
        print("◉今日日期为:", today)
        if last_info["d"]["info"]["date"] == today:
            print("\n*******今日已提交*******")
            self.close()
        else:
            print("\n\n*******未提交*******")
            self.last_info = last_info["d"]["oldInfo"]
            
    def read_captcha(self, img_byte):
        img = Image.open(io.BytesIO(img_byte)).convert('L')
        enh_bri = ImageEnhance.Brightness(img)
        new_img = enh_bri.enhance(factor=1.5)
        
        image = numpy.array(new_img)
        reader = easyocr.Reader(['en'])
        horizontal_list, free_list = reader.detect(image, optimal_num_chars=4)
        character = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
        allow_list = list(character)
        allow_list.extend(list(character.lower()))
    
        result = reader.recognize(image, 
                                allowlist=allow_list,
                                horizontal_list=horizontal_list[0],
                                free_list=free_list[0],
                                detail = 0)
        return result[0]
    

    def validate_code(self):
        img = self.session.get(self.url_code).content
        return self.read_captcha(img)

    def checkin(self):
        """
        提交
        """
        headers = {
            "Host": "zlapp.fudan.edu.cn",
            "Referer": "https://zlapp.fudan.edu.cn/site/ncov/fudanDaily?from=history",
            "DNT": "1",
            "TE": "Trailers",
            "User-Agent": self.UA
        }

        print("\n\n◉◉提交中")

        geo_api_info = json_loads(self.last_info["geo_api_info"])
        province = self.last_info["province"]
        city = self.last_info["city"]
        district = geo_api_info["addressComponent"].get("district", "")
        
        while(True):
            print("◉正在识别验证码......")
            code = self.validate_code()
            print("◉验证码为:", code)
            self.last_info.update(
                {
                    "tw": "13",
                    "province": province,
                    "city": city,
                    "area": " ".join((province, city, district)),
                    #"sfzx": "1",  # 是否在校
                    #"fxyy": "",  # 返校原因
                    "code": code,
                }
            )
            # print(self.last_info)
            save = self.session.post(
                'https://zlapp.fudan.edu.cn/ncov/wap/fudan/save',
                data=self.last_info,
                headers=headers,
                allow_redirects=False)

            save_msg = json_loads(save.text)["m"]
            print(save_msg, '\n\n')
            time.sleep(0.1)
            if(json_loads(save.text)["e"] != 1):
                break

def get_account():
    """
    获取账号信息
    """
    uid = getenv("STD_ID")
    psw = getenv("PASSWORD")
    if uid != None and psw != None:
        print("从环境变量中获取了用户名和密码！")
        return uid, psw
    print("\n\n请仔细阅读以下日志！！\n请仔细阅读以下日志！！！！\n请仔细阅读以下日志！！！！！！\n\n")
    if os_path.exists("account.txt"):
        print("读取账号中……")
        with open("account.txt", "r") as old:
            raw = old.readlines()
        if (raw[0][:3] != "uid") or (len(raw[0]) < 10):
            print("account.txt 内容无效, 请手动修改内容")
            sys_exit()
        uid = (raw[0].split(":"))[1].strip()
        psw = (raw[1].split(":"))[1].strip()

    else:
        print("未找到account.txt, 判断为首次运行, 请接下来依次输入学号密码")
        uid = input("学号：")
        psw = getpass("密码：")
        with open("account.txt", "w") as new:
            tmp = "uid:" + uid + "\npsw:" + psw +\
                "\n\n\n以上两行冒号后分别写上学号密码，不要加空格/换行，谢谢\n\n请注意文件安全，不要放在明显位置\n\n可以从dailyFudan.exe创建快捷方式到桌面"
            new.write(tmp)
        print("账号已保存在目录下account.txt，请注意文件安全，不要放在明显位置\n\n建议拉个快捷方式到桌面")

    return uid, psw


if __name__ == '__main__':
    uid, psw = get_account()
    # print(uid, psw)
    zlapp_login = 'https://uis.fudan.edu.cn/authserver/login?' \
                  'service=https://zlapp.fudan.edu.cn/site/ncov/fudanDaily'
    code_url = "https://zlapp.fudan.edu.cn/backend/default/code"
    daily_fudan = Zlapp(uid, psw,
                        url_login=zlapp_login, url_code=code_url)
    daily_fudan.login()

    daily_fudan.check()
    daily_fudan.checkin()
    # 再检查一遍
    daily_fudan.check()
    daily_fudan.close(1)