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CourseDownload.py
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CourseDownload.py
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import requests
import json
import time
import os
import subprocess
import re
from hashlib import md5
from collections import namedtuple
import rsa
import base64
from tqdm import tqdm
import getpass
_baseUrl = "https://vod.cc.shu.edu.cn/"
_loginUrl = "app/oauth/2.0/login?login_type=outer"
_userInfo = "app/user/getUserInfo"
_oauthCallbackUrl = "app/oauth/2.0/authzCodeCallback"
_getCourseList = "app/system/course/subject/findSubjectVodList"
_getVideoList = "app/system/resource/vodVideo/getCourseListBySubject"
_getVideoInfo = "app/system/resource/vodVideo/getvideoinfos"
_playPage = "app/vodvideo/vodVideoPlay.d2j"
_keystr = '''-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDl/aCgRl9f/4ON9MewoVnV58OLOU2ALBi2FKc5yIsfSpivKxe7A6FitJjHva3WpM7gvVOinMehp6if2UNIkbaN+plWf5IwqEVxsNZpeixc4GsbY9dXEk3WtRjwGSyDLySzEESH/kpJVoxO7ijRYqU+2oSRwTBNePOk1H+LRQokgQIDAQAB
-----END PUBLIC KEY-----'''
_header = {'Accept': 'application/json, text/javascript, */*; q=0.01',
'Content-type': 'application/x-www-form-urlencoded; charset=UTF-8'}
_oauth_uuid = "oauth_DQNiv=cNBzlCmk&oauth_RcL8d=PnEtVj2a"
_otherparam = "playTypeHls=true"
_pattern = "$subjName/$classDate/$lessonName/"
_fnClass = "课堂.mp4"
_fnScreen = "屏幕.mp4"
# eg. 形式与政策/2022-01-01/第1讲/课堂.mp4
CourseList = [] # list of Courseinfo
VideoList = []
OAuthKey = ""
Courseinfo = namedtuple("CourseInfo", ["subjectName", "teacherName", "subjectId", "classId"])
Videoinfo = namedtuple("VideoInfo", ["vid", "videoName", "url"])
Classinfo = namedtuple("ClassInfo",
["subjectName", "sessionName", "teacherName", "id", "classDate", "video1", "video2"])
def encryptPass(passwd) -> str:
pubkey = rsa.PublicKey.load_pkcs1_openssl_pem(_keystr.encode('utf-8'))
encryptpwd = base64.b64encode(rsa.encrypt(passwd.encode('utf-8'), pubkey)).decode()
return encryptpwd
def getOAuthKey(sess) -> str:
r = sess.get(_baseUrl + _playPage)
return base64.b64decode(re.search(r'(?<=vaule=").*(?=")', r.text).group(0)).decode()
def signRequest(vid: str, oauth_key: str):
oauth_nonce = str(int(round(time.time() * 1000)))
oauth_path = _baseUrl + _playPage + "?id=%s" % vid
encoded_oauth_path = base64.b64encode(oauth_path.encode('utf-8')).decode()
tmpstr = "/%s?id=%s&oauth-consumer-key=%s&oauth-nonce=%s&oauth-path=%s&%s&%s" % (
_getVideoInfo, vid, oauth_key, oauth_nonce, encoded_oauth_path, _oauth_uuid, _otherparam)
return oauth_nonce, encoded_oauth_path, md5(tmpstr.encode('utf-8')).hexdigest().lower()
def getUserInfo(sess: requests.Session):
r = sess.post(_baseUrl + _userInfo, headers=_header)
data = json.loads(r.text)
if "error" in r.text:
print(r.text)
raise RuntimeError(2, "Login Error")
return data
def getCourses(sess: requests.Session):
global CourseList
r = sess.post(_baseUrl + _getCourseList, data="pageIndex=1&pageSize=30&orderByType=", headers=_header)
data = json.loads(r.text)
if "error" in r.text:
print(r.text)
raise RuntimeError(2, "Error")
for item in data["list"]:
CourseList.append(
Courseinfo(item["subjectName"], item["userList"][0]["userName"], item["subjectId"], item["teclId"]))
def getVideos(sess: requests.Session, subjid: str, classid: str):
body = "orderField=courTimes&subjectId=%s&teclId=%s" % (subjid, classid)
r = sess.post(_baseUrl + _getVideoList, body, headers=_header)
if "error" in r.text:
print(r.text)
raise RuntimeError("Cannot get Video list")
data = json.loads(r.text)
resvlist = data["list"][0]["responseVoList"]
lst = []
for item in resvlist:
lst.append(
Classinfo(data["list"][0]["subjName"], item["videName"], item["userName"], item["id"], None, None, None))
return lst
def getVideo(sess: requests.Session, vid: str, client_key: str):
oauth_nonce, encpath, sign = signRequest(vid, client_key)
h = _header
h["oauth-consumer-key"] = client_key
h["oauth-nonce"] = oauth_nonce
h["oauth-path"] = encpath
h["oauth-signature"] = sign
body = "%s&id=%s&%s" % (_otherparam, vid, _oauth_uuid)
r = sess.post(_baseUrl + _getVideoInfo, body, headers=h)
if "error" in r.text:
print(r.text)
raise RuntimeError("Cannot get Url")
data = json.loads(r.text)
volist = data["videoPlayResponseVoList"]
v1 = Videoinfo(volist[0]["id"], data["videName"], volist[0]["rtmpUrlHdv"])
v2 = Videoinfo(volist[1]["id"], data["videName"], volist[1]["rtmpUrlHdv"])
classbtime = time.strptime(data["videBeginTime"], "%Y-%m-%d %H:%M:%S")
classetime = time.strptime(data["videEndTime"], "%Y-%m-%d %H:%M:%S")
classdate = time.strftime("%Y-%m-%d", classbtime)
return v1, v2, classdate
def download(url: str, fname: str, desc: str):
resp = requests.get(url, stream=True)
total = int(resp.headers.get('content-length', 0))
with open(fname, 'wb') as file, tqdm(
desc=desc,
total=total,
unit='B',
unit_scale=True,
unit_divisor=1024,
) as bar:
for data in resp.iter_content(chunk_size=1024):
size = file.write(data)
bar.update(size)
def parseList(s: str, maxnum: int):
noerror = True
lst = s.replace(" ", "").split(",")
finallist = []
for item in lst:
if not item.isnumeric():
tmp = item.split("-")
if len(tmp) == 2 and tmp[0].isnumeric() and tmp[1].isnumeric():
if 0 < int(tmp[0]) <= int(tmp[1]) <= maxnum:
finallist.extend(range(int(tmp[0]), int(tmp[1]) + 1))
else:
print("Invalid range: " + item)
noerror = False
else:
print("Error when parsing: " + item)
noerror = False
else:
if 1 <= int(item) <= maxnum:
finallist.append(int(item))
else:
print("Invalid index: " + item)
noerror = False
return sorted(list(set(finallist))), noerror
def login(username: str, encryptpwd: str) -> requests.Session:
global OAuthKey
print("Logging in...")
session = requests.Session()
session.verify = False
try:
r = session.get(_baseUrl + _loginUrl)
except Exception as e:
print(e)
print("\nUnable to connect:(\nPlease use VPN or check network settings")
exit(1)
if not r.url.startswith(
("https://oauth.shu.edu.cn/", "https://newsso.shu.edu.cn/")):
# Already logined or error
if not r.url.startswith(_baseUrl) or not r.status_code == 200:
raise RuntimeError(2, "Unexpected Result")
else:
request_data = {"username": username, "password": encryptpwd}
r = session.post(r.url, request_data)
if not r.url.startswith(_baseUrl + _oauthCallbackUrl):
if "too many requests" in r.text:
raise RuntimeError(2, f"Too many Requests, try again later")
raise RuntimeError(2, f"Login Failed")
else:
ssourl = re.search(r"(?<=script.src=').*(?=')", r.text).group(0)
session.get(ssourl)
userinfo = getUserInfo(session)
username = userinfo['userCode']
print("Login Successful:" + username)
print("-------------------------")
OAuthKey = getOAuthKey(session)
return session
def getUrlsInList(lst: list, sess: requests.session) -> list:
for idx, item in enumerate(lst):
if item.classDate is None:
v1, v2, cdate = getVideo(sess, item.id, OAuthKey)
lst[idx] = Classinfo(item.subjectName, item.sessionName, item.teacherName, item.id, cdate, v1, v2)
return lst
def main():
requests.packages.urllib3.disable_warnings()
username = input("User:")
password = getpass.getpass("Password:")
sess = login(username, encryptPass(password))
getCourses(sess)
print("Courses Available:")
i = 0
for course in CourseList:
i += 1
print("%d: %s by %s" % (i, course.subjectName, course.teacherName))
print("\nYou may enter ranges. eg. 1,3-5,7")
choice, noerror = parseList(input("Select Course(s) to download: "), len(CourseList))
while not len(choice) >= 1 or not noerror:
print("Invalid Input. Enter again.")
choice, noerror = parseList(input("Select Course(s) to download: "), len(CourseList))
print("You chose: ", end="")
print(choice)
allvideos = [] # list of List[ClassInfo]
print("-" * 50)
for index in choice:
course: Courseinfo = CourseList[index - 1]
allvideos.append(getVideos(sess, course.subjectId, course.classId))
for j in range(0, len(choice)):
course: Courseinfo = CourseList[choice[j] - 1]
print("%d→ %s %s: %d videos" % (j + 1, course.subjectName, course.teacherName, len(allvideos[j])))
print("""
Menu\n
1. Select video(s) to download\n
2. Use IDM to download video(s)\n
3. Get video info and URL(s)\n
4. Get plain URL(s)\n
5. Save to Markdown File
""")
while True:
menuc = input("Enter[1-5]:")
if menuc.isnumeric():
if 1 <= int(menuc) <= 5:
break
print("Invalid Input")
print("Please select ranges... eg. 1,3-5,7")
dllist = []
for j in range(0, len(choice)):
course: Courseinfo = CourseList[choice[j] - 1]
maxindex = len(allvideos[j])
videoc, noerror = parseList(input(course.subjectName + " [1-%d]: " % maxindex), maxindex)
while not len(choice) >= 1 or not noerror:
print("Invalid Input. Enter again.")
videoc, noerror = parseList(input(course.subjectName + " [1-%d]: " % maxindex), maxindex)
print("You chose: ", end="")
print(videoc)
for index in videoc:
dllist.append(allvideos[j][index - 1])
print("Total %d × 2 = %d videos" % (len(dllist),len(dllist)*2))
tmp = input("Are you sure[Y/N]:")
while True:
if tmp == "Y" or tmp == "y":
break
else:
if tmp == "N" or tmp == "n":
print("Abort.")
exit(0)
break
else:
tmp = input("Please enter ""Y"" or ""N"" :")
print("Please Wait while we get the links...")
getUrlsInList(dllist, sess)
if int(menuc) == 1:
global _pattern
if os.name == 'nt':
localpath = "D:\\downloads\\"
_pattern = _pattern.replace("/","\\")
else:
localpath = "~/downloads/"
_pattern = _pattern.replace("\\","/")
print("Save to %s ?" % localpath)
tmp = input("Enter yes or another path(absolute):")
if tmp.lower() != "yes" and tmp.lower() != "y":
localpath = tmp
for item in dllist:
fp = localpath + _pattern
fp = fp.replace("$subjName", item.subjectName)
fp = fp.replace("$lessonName", item.sessionName.replace(item.subjectName + "(", "").replace(")", ""))
fp = fp.replace("$classDate", item.classDate)
if not os.path.exists(fp):
os.makedirs(fp)
fn1 = _fnClass
download(item.video1.url, fp + fn1, "%s → %s" % (item.video1.videoName, fp + fn1))
fn2 = _fnScreen
download(item.video2.url, fp + fn2, "%s → %s" % (item.video2.videoName, fp + fn2))
print("OK. Please check your IDM.")
print("You may have to start downloading manually")
if int(menuc) == 2:
if os.name != 'nt':
print("Sorry, only Windows is supported:(")
else:
localpath = "D:\\downloads\\"
_pattern = _pattern.replace("/","\\")
idmpath = "C:\\Program Files (x86)\\Internet Download Manager\\IDMan.exe"
while not os.path.exists(idmpath) or not idmpath.lower().endswith("idman.exe"):
print("IDM Not Found or invalid in %s" % idmpath)
idmpath = input("Enter IDMan.exe Path:")
localpath = "D:\\downloads\\"
print("Save to %s ?" % localpath)
tmp = input("Enter yes or another path(absloute):")
if tmp.lower() != "yes" and tmp.lower() != "y":
localpath = tmp
for item in dllist:
fp = localpath + _pattern
fp = fp.replace("$subjName", item.subjectName)
fp = fp.replace("$lessonName", item.sessionName.replace(item.subjectName + "(", "").replace(")", ""))
fp = fp.replace("$classDate", item.classDate)
fn1 = _fnClass
print("%s → %s" % (item.video1.videoName, fp + fn1))
subprocess.Popen([idmpath, '/d', item.video1.url, '/p', fp, '/f', fn1, '/a'])
fn2 = _fnScreen
print("%s → %s" % (item.video1.videoName, fp + fn2))
subprocess.Popen([idmpath, '/d', item.video2.url, '/p', fp, '/f', fn2, '/a'])
subprocess.Popen([idmpath, '/s'])
if int(menuc) == 3:
dic = {"data": []}
for idx, item in enumerate(dllist):
dic["data"].append(item._asdict())
dic["data"][idx]["video1"] = item.video1._asdict()
dic["data"][idx]["video2"] = item.video2._asdict()
t = int(time.time())
fn = "%s.json" % t
with open(fn, "w", encoding="utf8") as json_file:
json.dump(dic, json_file, ensure_ascii=False)
json_file.close()
print("Saved to %s" % fn)
if int(menuc) == 4:
t = int(time.time())
fn = "%s.txt" % t
with open(fn, "w", encoding="utf-8") as f:
for item in dllist:
print(item.video1.url)
f.write(item.video1.url + "\n")
print(item.video2.url)
f.write(item.video2.url + "\n")
f.close()
print("Saved to %s" % fn)
if int(menuc) == 5:
print("Notice: The links are not permanent, they may expire in 1 day")
cursubj = ""
s = "# 视频列表"
for item in dllist:
if cursubj != item.subjectName:
cursubj = item.subjectName
curteacher = item.teacherName
s = s + "\n\n## %s %s\n" % (cursubj, curteacher)
lessonname = item.sessionName.replace(cursubj + "(", "").replace(")", "")
s = s + "\n<details>\n<summary>%s</summary>\n<p style=\"padding-left: 2em;\">\n日期：%s<br />\n<a href=\"%s\" target=\"_blank\" rel=\"noopener noreferrer\">课堂</a><br />\n<a href=\"%s\" target=\"_blank\" rel=\"noopener noreferrer\">屏幕</a><br />\n</p>\n</details>" % (
lessonname, item.classDate, item.video1.url, item.video2.url)
t = int(time.time())
fn = "%s.md" % t
f = open(fn, "w",encoding="utf-8")
f.write(s)
f.close()
print("Saved to %s" % fn)
if __name__ == '__main__':
main()