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grabbing.py
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grabbing.py
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#!/usr/bin/python3
# encoding=utf8
import requests
import time
import datetime
import pytz
import re
import sys
import argparse
import json
import io
import os
from bs4 import BeautifulSoup
import PIL
import pytesseract
import urllib.parse
import hashlib
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry
STUID='XXXXXX'#学号
STUKEY='XXXXXX'#统一认证登录密码
MODE='monitor'#模式,分为两种 "grab"和"monitor". monitor只监控, grab监控到又空余位置时进行抢课.
#下面是qqbot推送参数
QQ='XXXXXX'
GROUP='XXXXXX'
QQAPIURL='http://XXX.XXX:XXX'
LOGIN_URL="https://passport.ustc.edu.cn/login?service=https%3A%2F%2Fjw.ustc.edu.cn%2Fucas-sso%2Flogin"
RETURN_URL="https://jw.ustc.edu.cn/ucas-sso/login"
qqmsg_send='{}/send_private_msg?user_id={}&message='.format(QQAPIURL, QQ)
qqmsg_chuo='{}/send_private_msg?user_id={}&message=[CQ:poke,qq={}]'.format(QQAPIURL, QQ, QQ)
qqmsg_at='{}/send_group_msg?group_id={}&message=[CQ:at,qq={}]'.format(QQAPIURL, GROUP, QQ)
class Report(object):
def __init__(self):
self.stuid = STUID
self.password = STUKEY
def link_generate(self):
session, login_ret = self.login()
back = session.get("https://jw.ustc.edu.cn/")
backurl = back.url
if(backurl == 'https://jw.ustc.edu.cn/home'):
print("login success!")
else:
print("login failed!")
hl = hashlib.md5()
STUID_MD5 = hl.update(STUID.encode(encoding='utf-8'))
ret = session.get("https://jw.ustc.edu.cn/webroot/decision/login/cross/domain?fine_username={}&fine_password={}&validity=-1".format(STUID, hl.hexdigest()))
print("first get success!")
ret = session.get("https://jw.ustc.edu.cn/")
print("second get success!")
ret = session.get("https://jw.ustc.edu.cn/for-std/course-select")
url_stuid = ret.url
pos = url_stuid.rfind('/', 0, len(url_stuid))
STDASSOC = url_stuid[pos+1:]
data_enterinto = {
"bizTypeId": 2,
"studentId": STDASSOC,
}
# 这部分是本学期新增的网页,将选课平台分流成专业课和英语/体育课两种,目前不清楚是否影响选课,先搁置。
# ret = session.post("https://jw.ustc.edu.cn/ws/for-std/course-select/open-turns", data=data_enterinto)
# data = json.loads(ret.text)
# print(data)
# id_choice = list()
# for data_choice in data:
# id_choice.append(int(data_choice['id']))
# print(id_choice)
# id_num = len(id_choice)
# for i in range(1, choice_num + 1):
# print("{} ----- {}".format(i, id_choice[i - 1]))
# print('请从中选出你想要选择的课程所在的区域')
semester_choice = list()
semester_number = list()
ret = session.get("https://jw.ustc.edu.cn/for-std/lesson-search/index/{}".format(STDASSOC))
data = ret.text
soup = BeautifulSoup(data, 'html.parser')
for semester in soup.find("select", {"class": "semester"}):
if(semester.string != '\n'):
semester_choice.append(semester.string)
semester_number.append(semester['value'])
#choice_num = len(semester_choice)
print("[id]\t--\tdetails")
for i in range(0, 5):
print("[{}]\t--\t{}".format(semester_number[i], semester_choice[i]))
semester_user_choice = input("请选择你想抢课的课程所在的学期,输入最前面的序号:\n")
class_info = {
'season' : str(semester_user_choice),
'stdAssoc' : STDASSOC,
'classNum': str(CLASSNUM),
'className': urllib.parse.quote(CLASSNAME),
'classTeacher': urllib.parse.quote(CLASSTEACHER)
}
print("searching target class...")
ALLCLASSINFO_URL="https://jw.ustc.edu.cn/for-std/lesson-search/semester/{season}/search/{stdAssoc}?codeLike={classNum}&courseNameZhLike={className}&teacherNameLike={classTeacher}".format(**class_info)
ret = session.get(ALLCLASSINFO_URL)
info = json.loads(ret.text)
try:
lessonId = info['data'][0]['id']
except Exception as e:
print(e)
print("没有找到该课程,退出")
exit()
limitCount = info['data'][0]['limitCount']
gxhlimitCount = info['data'][0]['courseApplyLimit']
stdCount = info['data'][0]['stdCount']
class_name = info['data'][0]['course']['nameZh']
class_teacher = info['data'][0]['teacherAssignmentList'][0]['person']['nameZh']
class_time = info['data'][0]['scheduleText']['dateTimePlacePersonText']['text']
class_info['lessonId'] = lessonId
print("--------------------------\ntarget class: " + class_name + "\nlesson id: " + str(lessonId) + "\ncurrent selected/limited count: " + str(stdCount) + '/' + str(limitCount) + '\n--------------------------')
print("find existing selected class...")
CLASSINFO_URL="https://jw.ustc.edu.cn/for-std/course-take-query/semester/{}/search?bizTypeAssoc=2&studentAssoc={}&courseNameZhLike={}&courseTakeStatusSetVal=1".format(int(class_info['season']), STDASSOC, urllib.parse.quote(class_name))
ret = session.get(CLASSINFO_URL)
if (len(json.loads(ret.text)['data']) == 0):
GRAB_MODE = 0
oldLessonAssoc = 0
else:
GRAB_MODE = 1
oldLessonCode = json.loads(ret.text)['data'][0]['lessonCode']
ret = session.get("https://jw.ustc.edu.cn/for-std/lesson-search/semester/{}/search/{}?codeLike={}&courseNameZhLike=&teacherNameLike=".format(int(class_info['season']), STDASSOC, oldLessonCode))
oldLessonAssoc = json.loads(ret.text)['data'][0]['id']
class_info['oldLessonAssoc'] = oldLessonAssoc
APPLY_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/selection-apply/apply?lessonAssoc={lessonId}&semesterAssoc={season}&bizTypeAssoc=2&studentAssoc={stdAssoc}".format(**class_info)
PRECHECK_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/preCheck"
GETRETAKE_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/getRetake?lessonIds={lessonId}&studentId={stdAssoc}&bizTypeId=2".format(**class_info)
SAVE_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/selection-apply/save"
CHANGE_APPLY_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/change-class-apply/change-class?lessonAssoc={lessonId}&oldLessonId={oldLessonAssoc}&bizTypeAssoc=2&semesterAssoc={season}&studentAssoc={stdAssoc}&applyTypeAssoc=5".format(**class_info)
CHANGE_PRECHECK_URL = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/preCheck"
ADD_DROP_REQUEST = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/add-drop-request"
ADD_DROP_RESPOND = "https://jw.ustc.edu.cn/for-std/course-adjustment-apply/add-drop-response"
url_info = {
'mode': GRAB_MODE,
'all': ALLCLASSINFO_URL,
'apply': APPLY_URL,
'precheck': PRECHECK_URL,
'getretake': GETRETAKE_URL,
'save': SAVE_URL,
'change_apply': CHANGE_APPLY_URL,
'change_precheck': CHANGE_PRECHECK_URL,
'drop_request': ADD_DROP_REQUEST,
'drop_respond': ADD_DROP_RESPOND
}
counting = 0
while True:
ret = session.get(ALLCLASSINFO_URL)
info = json.loads(ret.text)
limitCount = info['data'][0]['limitCount']
stdCount = info['data'][0]['stdCount']
classtype_bool = stdCount >= limitCount and stdCount < gxhlimitCount
if (CLASSTYPE == 'public'):
classtype_bool = False
if(stdCount < limitCount or classtype_bool):
if(MODE == 'grab'):
print("Class not full {}/{}/{}, grabbing...".format(stdCount, limitCount, gxhlimitCount))
requests.get(qqmsg_send+"注意!!{}({}) 课程人数未满!现在为{}/{}/{}人".format(class_name, class_teacher, stdCount, limitCount, gxhlimitCount))
retry_count=5
retVal = False
while not retVal:
retVal = self.report(session, class_info, url_info)
if retVal:
requests.get(qqmsg_send+"抢课成功! 课程名:{}, 老师:{}".format(class_name, class_teacher))
print(qqmsg_send+"抢课成功! 课程名:{}, 老师:{}".format(class_name, class_teacher))
print("Sucessfully grabbed!")
time.sleep(2)
exit(0)
else:
print("Failed, retry...")
retry_count = retry_count - 1
if(retry_count == 0):
continue
else:
print("Class not full {}/{}/{}, push QQmsg...".format(stdCount, limitCount, gxhlimitCount))
requests.get(qqmsg_send+"注意!!{}({}) 课程人数未满!现在为{}/{}/{}人".format(class_name, class_teacher, stdCount, limitCount, gxhlimitCount))
#requests.get(qqmsg_at+"\n{}({}) 课程人数未满!现在为{}/{}人".format(class_name, class_teacher, stdCount, limitCount))
else:
print("Class is full.")
counting = counting + 1
if(counting == 60):
counting = 1
requests.get(qqmsg_send+"{}({}) 课程人数已满!现在为{}/{}/{}人".format(class_name, class_teacher, stdCount, limitCount, gxhlimitCount))
try:
time.sleep(TIME_INTERVAL)
except Exception as e:
print(e)
time.sleep(60)
return True
def report(self, session, class_info, url_info):
loginsuccess = False
retrycount = 5
cookies = session.cookies
#选课post数据的headers
headers = {
'Content-Type':'application/json;charset=UTF-8',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67',
'Accept-Encoding': 'gzip, deflate',
'Accept': '*/*',
'Connection': 'keep-alive',
'Referer': 'https://jw.ustc.edu.cn/for-std/course-adjustment-apply/selection-apply/apply?lessonAssoc={}&semesterAssoc={}&bizTypeAssoc=2&studentAssoc={}'.format(class_info['lessonId'],class_info['season'], class_info['stdAssoc'])
}
#激活cookie用headers
headers2 = {
'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67',
'Accept-Encoding': 'gzip, deflate',
'Accept': '*/*',
'Connection': 'keep-alive',
'Referer': 'https://jw.ustc.edu.cn/for-std/course-select/turns/{}'.format(class_info['stdAssoc'])
}
headers3 = {
'Content-Type':'application/x-www-form-urlencoded;charset=UTF-8',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67',
'Accept-Encoding': 'gzip, deflate',
'Accept': '*/*',
'Connection': 'keep-alive'
}
#个性化申请表单-save
data = {
'applyReason': '申请',
'applyTypeAssoc': 1,
'bizTypeAssoc': 2,
'newLessonAssoc': int(class_info['lessonId']),
'retake': False,
'scheduleGroupAssoc': None,
'semesterAssoc': int(class_info['season']),
'studentAssoc': int(class_info['stdAssoc']),
}
#个性化申请表单-preCheck
data2 = [{
"newLessonAssoc": int(class_info['lessonId']),
"studentAssoc": int(class_info['stdAssoc']),
"semesterAssoc": int(class_info['season']),
"bizTypeAssoc": 2,
"applyTypeAssoc": 1,
"applyReason": "申请",
"retake": False,
"scheduleGroupAssoc": None
}]
data3 = [{
"oldLessonAssoc": int(class_info['oldLessonAssoc']),
"newLessonAssoc": int(class_info['lessonId']),
"studentAssoc": int(class_info['stdAssoc']),
"semesterAssoc": int(class_info['season']),
"bizTypeAssoc": 2,
"applyReason": "申请",
"applyTypeAssoc": 5,
"scheduleGroupAssoc": None
}]
data4 = {
"studentAssoc": int(class_info['stdAssoc']),
"semesterAssoc": int(class_info['season']),
"bizTypeAssoc": 2,
"applyTypeAssoc": 5,
"checkFalseInsertApply": True,
"lessonAndScheduleGroups":[{
"lessonAssoc": int(class_info['lessonId']),
"dropLessonAssoc": int(class_info['oldLessonAssoc']),
"scheduleGroupAssoc": None
}]
}
data_activate = {
"bizTypeId": 2,
"studentId": int(class_info['stdAssoc'])
}
ret = session.get("https://jw.ustc.edu.cn/static/courseselect/template/open-turns.html", cookies=session.cookies)
ret = session.post("https://jw.ustc.edu.cn/ws/for-std/course-select/open-turns", data=data_activate, headers=headers2)
ret = session.get("https://jw.ustc.edu.cn/for-std/course-select/{}/turn/541/select".format(class_info['stdAssoc']), cookies=session.cookies)
if(url_info['mode'] == 0):
ret = session.get(url_info['apply'])
ret = session.post(url_info['change_precheck'], data=json.dumps(data2), headers=headers)
ret = session.get(url_info['getretake'])
ret = session.post(url_info['save'], data=json.dumps(data), headers=headers)
if(ret.text == 'null'):
return True
else:
return False
else:
ret = session.get(url_info['change_apply'])
ret = session.post(url_info['precheck'], data=json.dumps(data3), headers=headers)
ret = session.post(url_info['drop_request'], data=json.dumps(data4), headers=headers)
print(ret)
requestId = ret.text
data_respond = {
'studentId': class_info['stdAssoc'],
'requestId': requestId
}
ret = session.post(url_info['drop_respond'], data=json.dumps(data_respond), headers=headers3)
return True
def login(self):
retries = Retry(total=5,
backoff_factor=0.5,
status_forcelist=[500, 502, 503, 504])
s = requests.Session()
s.mount("https://", HTTPAdapter(max_retries=retries))
s.headers["User-Agent"] = "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36 Edg/92.0.902.67"
r = s.get(LOGIN_URL, params={"service": RETURN_URL})
x = re.search(r"""<input.*?name="CAS_LT".*?>""", r.text).group(0)
cas_lt = re.search(r'value="(LT-\w*)"', x).group(1)
CAS_CAPTCHA_URL = "https://passport.ustc.edu.cn/validatecode.jsp?type=login"
r = s.get(CAS_CAPTCHA_URL)
img = PIL.Image.open(io.BytesIO(r.content))
pix = img.load()
for i in range(img.size[0]):
for j in range(img.size[1]):
r, g, b = pix[i, j]
if g >= 40 and r < 80:
pix[i, j] = (0, 0, 0)
else:
pix[i, j] = (255, 255, 255)
lt_code = pytesseract.image_to_string(img).strip()
data = {
'model': 'uplogin.jsp',
'service': 'https://jw.ustc.edu.cn/ucas-sso/login',
'username': STUID,
'password': STUKEY,
'warn': '',
'showCode': '1',
'button': '',
'CAS_LT': cas_lt,
'LT': lt_code
}
ret = s.post(LOGIN_URL, data=data)
print("login...")
#print(ret.cookies.get_dict)
#print(s.cookies.get_dict())
return s, ret
if __name__ == "__main__":
#参数说明:
# 第一个参数为模式选择, grab为抢课模式, monitor为监控模式
# 第二个参数为两次查询间隔时间,单位为秒(默认为60)
# 第三个参数为课程中文名称
# 第四个参数为课程授课老师
# 第五个参数为课程号, 若前两项已经可以唯一确定则可以为空(如果不唯一的话, 不要为空!)
parser = argparse.ArgumentParser(description='中国科学技术大学抢课脚本.')
parser.add_argument('-m', '--mode', help='模式选择, grab为抢课模式, monitor为监控模式, 默认为监控模式.', type=str, default='monitor')
parser.add_argument('-c', '--classtype', help='课程类别选择, public为公选课, major为专业课, 默认为公选课模式. 区别为专业课可以个性化申请,公选课不允许个性化申请. 如果想即选即中请选择public.', type=str, default='public')
parser.add_argument('-t', '--time', help='两次查询间隔时间,单位为秒 (默认为60).', type=int, default=60)
parser.add_argument('name', help='选中课程的中文名称', type=str)
parser.add_argument('teacher', help='选中课程的授课老师', type=str)
parser.add_argument('qqnum', help='你要私聊提醒的qq号', type=str)
parser.add_argument('classid', help='课程号, 若前两项已经可以唯一确定则可以为空(如果不唯一的话, 不要为空!)', type=str, default='', nargs='?')
args = parser.parse_args()
MODE = args.mode
TIME_INTERVAL = args.time
CLASSNAME = args.name
CLASSTEACHER = args.teacher
CLASSNUM = args.classid
QQ = args.qqnum
CLASSTYPE = args.classtype
autorepoter = Report()
ret = autorepoter.link_generate()