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CASLogin.py
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CASLogin.py
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# -*- coding: utf-8 -*-
import requests
import configparser
from bs4 import BeautifulSoup
session = requests.Session()
def login(url, username=None, password=None):
if not username:
username = input('Please input your NetID: ')
if not password:
password = input('Please input your password: ')
response = session.get(url, cookies=session.cookies)
try:
soup = BeautifulSoup(response.text, 'html.parser')
lt = soup.find('input', {'name': 'lt'})['value']
execution = soup.find('input', {'name': 'execution'})['value']
payload = {
'username': username,
'password': password,
'lt': lt,
'execution': execution,
'_eventId': 'submit',
'submit': '登录'
}
response = session.post(url, data=payload, cookies=session.cookies)
return response
except TypeError:
# 已经登录
return response
def cas_login(url, username, password):
response = login(url, username, password)
soup = BeautifulSoup(response.text, 'html.parser')
while soup.find_all(class_="errors"):
print(soup.find(id='msg').string, end="\n\n")
response = login(url)
soup = BeautifulSoup(response.text, 'html.parser')
print('Log In Successful')
return response
def cas_logout():
session.get('https://cas.sysu.edu.cn/cas/logout', cookies=session.cookies)
if __name__ == '__main__':
config = configparser.ConfigParser()
config.read('config.ini')
NetID = config['CAS']['netid']
Password = config['CAS']['password']
cas_login('https://cas.sysu.edu.cn/cas/login', NetID, Password)