Python模拟登陆 —— 征服验证码 2 B站

作者：SeanCheney

链接：https://www.jianshu.com/p/2a2c9df414f1

來源：简书

B站的登录密码用了rsa加密（两个大质数的乘积很难进行逆向分解，所以可以用这个乘积来做公钥）。
所以运行py文件之前，使用镜像，先用pip安装rsa库：

pip install rsa -i https://pypi.tuna.tsinghua.edu.cn/simple/

运行：

import requests

import re

import time

import sys

import json  

import rsa

import os.path

import binascii

import datetime

from bs4 import BeautifulSoup

try:

    import cookielib

except:

    import http.cookiejar as cookielib



try:

    from PIL import Image

except:

    pass

    

session = requests.Session()

session.headers = {

    'User-Agent': 'Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:50.0) Gecko/20100101 Firefox/50.0',

    'Connection': 'keep-alive',

    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',

}



# 使用登录cookie信息

session = requests.session()

session.cookies = cookielib.LWPCookieJar(filename='cookies')

try:

    session.cookies.load(ignore_discard=True)

except:

    print("Cookie 未能加载")



def rsaEncrypt(password):

    url = 'http://passport.bilibili.com/login?act=getkey'

    try:

        getKeyRes = session.get(url)

        token = json.loads(getKeyRes.content.decode('utf-8'))

        pw = str(token['hash'] + password).encode('utf-8')



        key = token['key']

        key = rsa.PublicKey.load_pkcs1_openssl_pem(key)



        pw = rsa.encrypt(pw, key)

        password = binascii.b2a_base64(pw)

        return password

    except:

        return False



def get_vdcode():

    t = str(int(time.time()*1000))

    captcha_url = 'https://passport.bilibili.com/captcha.gif?r=' + t + "&type=login"

    r = session.get(captcha_url)

    with open('captcha.jpg', 'wb') as f:

        f.write(r.content)

        f.close()

    # 用pillow 的 Image 显示验证码

    # 如果没有安装 pillow 到源代码所在的目录去找到验证码然后手动输入

    try:

        im = Image.open('captcha.jpg')

        im.show()

        im.close()

    except:

        print(u'请到 %s 目录找到captcha.jpg 手动输入' % os.path.abspath('captcha.jpg'))

    captcha = input("please input the captcha\n>")

    return captcha

    

def login(user, password):

    post_url = 'https://passport.bilibili.com/login/dologin'

    payload = {

        'act': 'login',

        'gourl': '',

        'keeptime': '2592000',

        'userid': user,

        'pwd': password,

        'vdcode': get_vdcode(),

    }

    if payload["vdcode"] == None:

        return False



    try:

        resp = session.post(post_url, data=payload)

        session.cookies.save()



        soup = BeautifulSoup(resp.content, 'lxml')

        s = str(soup.select('center')[0])

        s = s.replace('\n', '')

        s = s.replace('\r', '')

        s = s.replace(' ', '')

        s = s.split('>')

        s = s[2]

        s = s.replace('<br/', '')

        flash(s)

        return False

    except requests.exceptions.ConnectionError as e:

        flash(e)

        return False

    except:

        return True



def isLogin():

    url = 'https://account.bilibili.com/home/userInfo'

    resp = session.get(url, allow_redirects=False)

    if  resp.status_code == 200 and resp.json()['code'] == 0:

        return True

    else:

        return False



if __name__ == '__main__':

    if isLogin():

        print('您已经登录')

    else:

        account = input('请输入你的用户名：')

        password = input('请输入密码：')

        login(account, rsaEncrypt(password))

滑块验证见http://www.jianshu.com/p/7623ff64ee54