""" A client that simulates the desktop device to communicate with umooc server """ import requests import time import re from bs4 import BeautifulSoup class LoginError(BaseException): def __init__(self, error_info): super().__init__(self) self.error_info = error_info def __str__(self): return self.error_info class ParseError(BaseException): def __init__(self, error_info): super().__init__(self) self.error_info = error_info def __str__(self): return self.error_info class TopicListPage(object): def __init__(self, raw_doc): self.raw_html = raw_doc self.topics = [] self.parse() def parse(self): page_soup = BeautifulSoup(self.raw_html, 'html.parser') topic_table = page_soup.find_all('table')[1] for tr in topic_table.findChildren('tr')[1:]: title_dom = tr.findChildren('td')[1].findChild('b') if title_dom is None: title_dom = tr.findChildren('td')[1].findChild('a') title_dom.string = title_dom.string[:-9] # remove the redundant '\n ' thread_title = title_dom.string if title_dom.name == 'b': thread_id = title_dom.parent.attrs['href'].split('=')[1] elif title_dom.name == 'a': thread_id = title_dom.attrs['href'].split('=')[1] else: raise ParseError('Cannot get thread id') self.topics.append({'title': thread_title, 'id': thread_id}) class TopicPage(object): def __init__(self, raw_doc): self.raw_html = raw_doc self.replies = [] self.parse() def parse(self): page_soup = BeautifulSoup(self.raw_html.replace( '<img src="http://eol.ctbu.edu.cn/meol/common/forum/styles/default/image/idiograph.gif" />' '<br><div style="font-size:12px;line-height:200%;letter-spacing:2px;"></div>', ''), 'html.parser') inputs = page_soup.find_all('input') for reply_input in inputs: contents = [] for content in BeautifulSoup(reply_input.attrs['value'].replace('�', '[emoji]'), 'html.parser').contents: if content.name != 'br': emoji_re = re.compile(u'[\uD800-\uDBFF]|[\uDC00-\uDFFF]') if content.name == 'div': for div_child in content.contents: if div_child.name == 'img': img_id = div_child['src'][38:-2] contents.append({'type': 'img', 'img_id': img_id}) elif content.name == 'p': contents.append( {'type': 'text', 'content': emoji_re.sub('[emoji]', content.text.replace('\xa0 ', ''))}) else: # pure text contents.append({'type': 'text', 'content': emoji_re.sub('[emoji]', content.string)}) self.replies.append( {'username': reply_input.find_parents('tr')[0].h6.contents[0][25:], # remove the redundant spaces 'time': reply_input.find_parents('tr')[0].find_all('li')[1].span.string[7:], 'contents': contents}) # umooc just does not support emoji class UmoocClient(object): def __init__(self): self.js_session_id = '' self.dwr_session_id = '' self.topic_list = [] self.replies = {} def login(self, username, password): resp = requests.post('http://eol.ctbu.edu.cn/meol/loginCheck.do', headers={'Cache-Control': 'max-age=0', 'Upgrade-Insecure-Requests': '1', 'Origin': 'http://eol.ctbu.edu.cn', 'Content-Type': 'application/x-www-form-urlencoded', 'User-Agent': 'yomooc', 'Referer': 'http://eol.ctbu.edu.cn/meol/common/security/login.jsp?enterLid=46445', 'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8,en-US;q=0.7' }, data=f'logintoken={str(time.time()).replace(".", "")[:-4]}' f'&enterLid=46445' f'&IPT_LOGINUSERNAME={username}' f'&IPT_LOGINPASSWORD={password}', allow_redirects=False) if resp.status_code == 302: self.js_session_id = resp.cookies['JSESSIONID'] else: raise LoginError('Fail to get session') self.prepare() def prepare(self): # get dwr session id resp = requests.post('http://eol.ctbu.edu.cn/meol/dwr/call/plaincall/__System.generateId.dwr', headers={'Origin': 'http://eol.ctbu.edu.cn', 'Content-Type': 'text/plain', 'User-Agent': 'yomooc', 'Referer': 'http://eol.ctbu.edu.cn/meol/jpk/course/layout/newpage/index.jsp' '?courseId=46445', 'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8,en-US;q=0.7', 'Cookie': f'JSESSIONID={self.js_session_id}'}, data=f'callCount=1\n' f'c0-scriptName=__System\n' f'c0-methodName=generateId\n' f'c0-id=0\n' f'batchId=0\n' f'instanceId=0\n' f'page=%2Fmeol%2Fjpk%2Fcourse%2Flayout%2Fnewpage%2Findex.jsp%3FcourseId%3D46445\n' f'scriptSessionId=\n' f'windowName=\n') self.dwr_session_id = re.search(r'[^"]*"\);', resp.text).group()[:-3] # get topics # it is needed to request some pages before getting the topic list # maybe the server is judging which course the user is requests.get('http://eol.ctbu.edu.cn/meol/jpk/course/layout/newpage/index.jsp?courseId=46445', headers={'Upgrade-Insecure-Requests': '1', 'User-Agent': 'yomooc', 'Cookie': f'JSESSIONID={self.js_session_id}; ' f'DWRSESSIONID={self.dwr_session_id}'}) requests.get('http://eol.ctbu.edu.cn/meol/jpk/course/layout/newpage/default_demonstrate.jsp' '?courseId=46445', headers={'Upgrade-Insecure-Requests': '1', 'User-Agent': 'yomooc', 'Referer': 'http://eol.ctbu.edu.cn/meol/jpk/course/layout/newpage/index.jsp' '?courseId=46445', 'Cookie': f'JSESSIONID={self.js_session_id}; ' f'DWRSESSIONID={self.dwr_session_id}'}) def get_topic_list(self, page=1): resp = requests.get(f'http://eol.ctbu.edu.cn/meol/common/faq/forum.jsp' f'?viewtype=thread' f'&forumid=102211' f'&cateId=0' f'&s_gotopage={page}', headers={'Upgrade-Insecure-Requests': '1', 'User-Agent': 'yomooc', 'Referer': 'http://eol.ctbu.edu.cn/meol/common/faq/forum.jsp' '?count=MODITIME' '&forumid=102211', 'Cookie': f'JSESSIONID={self.js_session_id}; ' f'DWRSESSIONID={self.dwr_session_id}'}) topic_list_page = TopicListPage(resp.text) self.topic_list.extend(topic_list_page.topics) return self.topic_list def get_replies(self, thread_ids=None): if thread_ids is None: thread_ids = [topic['id'] for topic in self.topic_list] for thread_id in thread_ids: resp = requests.get(f'http://eol.ctbu.edu.cn/meol/common/faq/thread.jsp?threadid={thread_id}', headers={'User-Agent': 'yomooc'}) topic_page = TopicPage(resp.text) self.replies[thread_id] = topic_page.replies return self.replies