写在前面

作为一名找不到工作的爬虫菜鸡人士来说，登陆这一块肯定是个比较大的难题。
 从今天开始准备一点点对大型网站进行逐个登陆破解。加深自己爬虫水平。

环境搭建

• Python 3.7.7环境，Mac电脑测试
• Python内置库
• 第三方库：rsa、urllib、requests

PC端登陆

全部代码：

'''PC登录哔哩哔哩'''
class Bilibili_For_PC():
  def __init__(self, **kwargs):
    for key, value in kwargs.items(): setattr(self, key, value)
    self.session = requests.Session()
    self.__initialize()
  '''登录函数'''
  def login(self, username, password, crack_captcha_func=None, **kwargs):
    # 若参数中给入代理,则设置
    self.session.proxies.update(kwargs.get('proxies', {}))
    # 是否需要验证码
    is_need_captcha = False
    while True:
      # 需要验证码
      if is_need_captcha:
        captcha_img = self.session.get(self.captcha_url, headers=self.captcha_headers).content
        data = {'image': base64.b64encode(captcha_img).decode('utf-8')}
        captcha = self.session.post(self.crack_captcha_url, json=data).json()['message']
      # 获得key值
      appkey = '1d8b6e7d45233436'
      data = {
            'appkey': appkey,
            'sign': self.__calcSign('appkey={}'.format(appkey))
          }
      response = self.session.post(self.getkey_url, data=data)
      response_json = response.json()
      key_hash = response_json['data']['hash']
      pub_key = rsa.PublicKey.load_pkcs1_openssl_pem(response_json['data']['key'].encode('utf-8'))
      # 模拟登录
      if is_need_captcha:
        data = "access_key=&actionKey=appkey&appkey={}&build=6040500&captcha={}&challenge=&channel=bili&cookies=&device=pc&password={}&permission=ALL&seccode=&subid=1&ts={}&username={}&validate=" \
            .format(appkey, captcha, urllib.parse.quote_plus(base64.b64encode(rsa.encrypt('{}{}'.format(key_hash, password).encode(), pub_key))), int(time.time()), urllib.parse.quote_plus(username))
      else:
        data = "access_key=&actionKey=appkey&appkey={}&build=6040500&captcha=&challenge=&channel=bili&cookies=&device=pc&password={}&permission=ALL&seccode=&subid=1&ts={}&username={}&validate=" \
            .format(appkey, urllib.parse.quote_plus(base64.b64encode(rsa.encrypt('{}{}'.format(key_hash, password).encode(), pub_key))), int(time.time()), urllib.parse.quote_plus(username))
      data = "{}&sign={}".format(data, self.__calcSign(data))
      response = self.session.post(self.login_url, data=data, headers=self.login_headers)
      response_json = response.json()
      # 不需要验证码, 登录成功
      if response_json['code'] == 0 and response_json['data']['status'] == 0:
        for cookie in response_json['data']['cookie_info']['cookies']:
          self.session.cookies.set(cookie['name'], cookie['value'], domain='.bilibili')
        print('[INFO]: Account -> %s, login successfully' % username)
        infos_return = {'username': username}
        infos_return.update(response_json)
        return infos_return, self.session
      # 需要识别验证码
      elif response_json['code'] == -105:
        is_need_captcha = True
      # 账号密码错误
      elif response_json['code'] == -629:
        raise RuntimeError('Account -> %s, fail to login, username or password error' % username)
      # 其他错误
      else:
        raise RuntimeError(response_json.get('message'))
  '''计算sign值'''
  def __calcSign(self, param, salt="560c52ccd288fed045859ed18bffd973"):
    sign = hashlib.md5('{}{}'.format(param, salt).encode('utf-8'))
    return sign.hexdigest()
  '''初始化'''
  def __initialize(self):
   # 登陆请求头
    self.login_headers = {'Content-type': 'application/x-www-form-urlencoded'}
    # 破解验证码请求头
    self.captcha_headers = {'Host': 'passport.bilibili.com'}
    # 获取key密钥URL
    self.getkey_url = 'https://passport.bilibili.com/api/oauth2/getKey'
    # 获取登陆URL
    self.login_url = 'https://passport.bilibili.com/api/v3/oauth2/login'
    # 获取验证码URL
    self.captcha_url = 'https://passport.bilibili.com/captcha'
    # 破解网站来自: https://github.com/Hsury/Bilibili-Toolkit
    # 破解验证码URL
    self.crack_captcha_url = 'https://bili.dev:2233/captcha'
    # 请求头都得加这个
    self.session.headers.update({'User-Agent': "Mozilla/5.0 BiliDroid/5.51.1 (bbcallen@gmail.com)"})

移动端登陆

移动端与PC端类似，网址URL差异以及请求头差异。在此不过多介绍。
 全部代码：

'''移动端登录B站'''
class Bilibili_For_Mobile():
  def __init__(self, **kwargs):
    for key, value in kwargs.items(): setattr(self, key, value)
    self.session = requests.Session()
    self.__initialize()
  '''登录函数'''
  def login(self, username, password, crack_captcha_func=None, **kwargs):
    self.session.proxies.update(kwargs.get('proxies', {}))
    # 是否需要验证码
    is_need_captcha = False
    while True:
      # 需要验证码
      if is_need_captcha:
        captcha_img = self.session.get(self.captcha_url, headers=self.captcha_headers).content
        data = {'image': base64.b64encode(captcha_img).decode('utf-8')}
        captcha = self.session.post(self.crack_captcha_url, json=data).json()['message']
      # 获得key值
      appkey = 'bca7e84c2d947ac6'
      data = {
            'appkey': appkey,
            'sign': self.__calcSign('appkey={}'.format(appkey))
          }
      response = self.session.post(self.getkey_url, data=data)
      response_json = response.json()
      key_hash = response_json['data']['hash']
      pub_key = rsa.PublicKey.load_pkcs1_openssl_pem(response_json['data']['key'].encode('utf-8'))
      # 模拟登录
      if is_need_captcha:
        data = "access_key=&actionKey=appkey&appkey={}&build=6040500&captcha={}&challenge=&channel=bili&cookies=&device=phone&mobi_app=android&password={}&permission=ALL&platform=android&seccode=&subid=1&ts={}&username={}&validate=" \
            .format(appkey, captcha, urllib.parse.quote_plus(base64.b64encode(rsa.encrypt('{}{}'.format(key_hash, password).encode(), pub_key))), int(time.time()), urllib.parse.quote_plus(username))
      else:
        data = "access_key=&actionKey=appkey&appkey={}&build=6040500&captcha=&challenge=&channel=bili&cookies=&device=phone&mobi_app=android&password={}&permission=ALL&platform=android&seccode=&subid=1&ts={}&username={}&validate=" \
            .format(appkey, urllib.parse.quote_plus(base64.b64encode(rsa.encrypt('{}{}'.format(key_hash, password).encode(), pub_key))), int(time.time()), urllib.parse.quote_plus(username))
      data = "{}&sign={}".format(data, self.__calcSign(data))
      response = self.session.post(self.login_url, data=data, headers=self.login_headers)
      response_json = response.json()
      # 不需要验证码, 登录成功
      if response_json['code'] == 0 and response_json['data']['status'] == 0:
        for cookie in response_json['data']['cookie_info']['cookies']:
          self.session.cookies.set(cookie['name'], cookie['value'], domain='.bilibili')
        print('[INFO]: Account -> %s, login successfully' % username)
        infos_return = {'username': username}
        infos_return.update(response_json)
        return infos_return, self.session
      # 需要识别验证码
      elif response_json['code'] == -105:
        is_need_captcha = True
      # 账号密码错误
      elif response_json['code'] == -629:
        raise RuntimeError('Account -> %s, fail to login, username or password error' % username)
      # 其他错误
      else:
        raise RuntimeError(response_json.get('message'))
  '''计算sign值'''
  def __calcSign(self, param, salt="60698ba2f68e01ce44738920a0ffe768"):
    sign = hashlib.md5('{}{}'.format(param, salt).encode('utf-8'))
    return sign.hexdigest()
  '''初始化'''
  def __initialize(self):
    self.login_headers = {
                'Content-type': 'application/x-www-form-urlencoded'
              }
    self.captcha_headers = {
                'Host': 'passport.bilibili.com'
              }
    self.getkey_url = 'https://passport.bilibili.com/api/oauth2/getKey'
    self.login_url = 'https://passport.bilibili.com/api/v3/oauth2/login'
    self.captcha_url = 'https://passport.bilibili.com/captcha'
    # 破解网站来自: https://github.com/Hsury/Bilibili-Toolkit
    self.crack_captcha_url = 'https://bili.dev:2233/captcha'
    self.session.headers.update({'User-Agent': "Mozilla/5.0 BiliDroid/5.51.1 (bbcallen@gmail.com)"})

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