yt_dlp/extractor/teachable.py

   1 from __future__ import unicode_literals
   2
   3 import re
   4
   5 from .common import InfoExtractor
   6 from .wistia import WistiaIE
   7 from ..utils import (
   8     clean_html,
   9     ExtractorError,
  10     int_or_none,
  11     get_element_by_class,
  12     strip_or_none,
  13     urlencode_postdata,
  14     urljoin,
  15 )
  16
  17
  18 class TeachableBaseIE(InfoExtractor):
  19     _NETRC_MACHINE = 'teachable'
  20     _URL_PREFIX = 'teachable:'
  21
  22     _SITES = {
  23         # Only notable ones here
  24         'v1.upskillcourses.com': 'upskill',
  25         'gns3.teachable.com': 'gns3',
  26         'academyhacker.com': 'academyhacker',
  27         'stackskills.com': 'stackskills',
  28         'market.saleshacker.com': 'saleshacker',
  29         'learnability.org': 'learnability',
  30         'edurila.com': 'edurila',
  31         'courses.workitdaily.com': 'workitdaily',
  32     }
  33
  34     _VALID_URL_SUB_TUPLE = (_URL_PREFIX, '|'.join(re.escape(site) for site in _SITES.keys()))
  35
  36     def _real_initialize(self):
  37         self._logged_in = False
  38
  39     def _login(self, site):
  40         if self._logged_in:
  41             return
  42
  43         username, password = self._get_login_info(netrc_machine=self._SITES.get(site, site))
  44         if username is None:
  45             return
  46
  47         login_page, urlh = self._download_webpage_handle(
  48             'https://%s/sign_in' % site, None,
  49             'Downloading %s login page' % site)
  50
  51         def is_logged(webpage):
  52             return any(re.search(p, webpage) for p in (
  53                 r'class=["\']user-signout',
  54                 r'<a[^>]+\bhref=["\']/sign_out',
  55                 r'Log\s+[Oo]ut\s*<'))
  56
  57         if is_logged(login_page):
  58             self._logged_in = True
  59             return
  60
  61         login_url = urlh.geturl()
  62
  63         login_form = self._hidden_inputs(login_page)
  64
  65         login_form.update({
  66             'user[email]': username,
  67             'user[password]': password,
  68         })
  69
  70         post_url = self._search_regex(
  71             r'<form[^>]+action=(["\'])(?P<url>(?:(?!\1).)+)\1', login_page,
  72             'post url', default=login_url, group='url')
  73
  74         if not post_url.startswith('http'):
  75             post_url = urljoin(login_url, post_url)
  76
  77         response = self._download_webpage(
  78             post_url, None, 'Logging in to %s' % site,
  79             data=urlencode_postdata(login_form),
  80             headers={
  81                 'Content-Type': 'application/x-www-form-urlencoded',
  82                 'Referer': login_url,
  83             })
  84
  85         if '>I accept the new Privacy Policy<' in response:
  86             raise ExtractorError(
  87                 'Unable to login: %s asks you to accept new Privacy Policy. '
  88                 'Go to https://%s/ and accept.' % (site, site), expected=True)
  89
  90         # Successful login
  91         if is_logged(response):
  92             self._logged_in = True
  93             return
  94
  95         message = get_element_by_class('alert', response)
  96         if message is not None:
  97             raise ExtractorError(
  98                 'Unable to login: %s' % clean_html(message), expected=True)
  99
 100         raise ExtractorError('Unable to log in')
 101
 102
 103 class TeachableIE(TeachableBaseIE):
 104     _VALID_URL = r'''(?x)
 105                     (?:
 106                         %shttps?://(?P<site_t>[^/]+)|
 107                         https?://(?:www\.)?(?P<site>%s)
 108                     )
 109                     /courses/[^/]+/lectures/(?P<id>\d+)
 110                     ''' % TeachableBaseIE._VALID_URL_SUB_TUPLE
 111
 112     _TESTS = [{
 113         'url': 'https://gns3.teachable.com/courses/gns3-certified-associate/lectures/6842364',
 114         'info_dict': {
 115             'id': 'untlgzk1v7',
 116             'ext': 'bin',
 117             'title': 'Overview',
 118             'description': 'md5:071463ff08b86c208811130ea1c2464c',
 119             'duration': 736.4,
 120             'timestamp': 1542315762,
 121             'upload_date': '20181115',
 122             'chapter': 'Welcome',
 123             'chapter_number': 1,
 124         },
 125         'params': {
 126             'skip_download': True,
 127         },
 128     }, {
 129         'url': 'http://v1.upskillcourses.com/courses/119763/lectures/1747100',
 130         'only_matching': True,
 131     }, {
 132         'url': 'https://gns3.teachable.com/courses/423415/lectures/6885939',
 133         'only_matching': True,
 134     }, {
 135         'url': 'teachable:https://v1.upskillcourses.com/courses/essential-web-developer-course/lectures/1747100',
 136         'only_matching': True,
 137     }]
 138
 139     @staticmethod
 140     def _is_teachable(webpage):
 141         return 'teachableTracker.linker:autoLink' in webpage and re.search(
 142             r'<link[^>]+href=["\']https?://(?:process\.fs|assets)\.teachablecdn\.com',
 143             webpage)
 144
 145     @staticmethod
 146     def _extract_url(webpage, source_url):
 147         if not TeachableIE._is_teachable(webpage):
 148             return
 149         if re.match(r'https?://[^/]+/(?:courses|p)', source_url):
 150             return '%s%s' % (TeachableBaseIE._URL_PREFIX, source_url)
 151
 152     def _real_extract(self, url):
 153         mobj = self._match_valid_url(url)
 154         site = mobj.group('site') or mobj.group('site_t')
 155         video_id = mobj.group('id')
 156
 157         self._login(site)
 158
 159         prefixed = url.startswith(self._URL_PREFIX)
 160         if prefixed:
 161             url = url[len(self._URL_PREFIX):]
 162
 163         webpage = self._download_webpage(url, video_id)
 164
 165         wistia_urls = WistiaIE._extract_urls(webpage)
 166         if not wistia_urls:
 167             if any(re.search(p, webpage) for p in (
 168                     r'class=["\']lecture-contents-locked',
 169                     r'>\s*Lecture contents locked',
 170                     r'id=["\']lecture-locked',
 171                     # https://academy.tailoredtutors.co.uk/courses/108779/lectures/1955313
 172                     r'class=["\'](?:inner-)?lesson-locked',
 173                     r'>LESSON LOCKED<')):
 174                 self.raise_login_required('Lecture contents locked')
 175             raise ExtractorError('Unable to find video URL')
 176
 177         title = self._og_search_title(webpage, default=None)
 178
 179         chapter = None
 180         chapter_number = None
 181         section_item = self._search_regex(
 182             r'(?s)(?P<li><li[^>]+\bdata-lecture-id=["\']%s[^>]+>.+?</li>)' % video_id,
 183             webpage, 'section item', default=None, group='li')
 184         if section_item:
 185             chapter_number = int_or_none(self._search_regex(
 186                 r'data-ss-position=["\'](\d+)', section_item, 'section id',
 187                 default=None))
 188             if chapter_number is not None:
 189                 sections = []
 190                 for s in re.findall(
 191                         r'(?s)<div[^>]+\bclass=["\']section-title[^>]+>(.+?)</div>', webpage):
 192                     section = strip_or_none(clean_html(s))
 193                     if not section:
 194                         sections = []
 195                         break
 196                     sections.append(section)
 197                 if chapter_number <= len(sections):
 198                     chapter = sections[chapter_number - 1]
 199
 200         entries = [{
 201             '_type': 'url_transparent',
 202             'url': wistia_url,
 203             'ie_key': WistiaIE.ie_key(),
 204             'title': title,
 205             'chapter': chapter,
 206             'chapter_number': chapter_number,
 207         } for wistia_url in wistia_urls]
 208
 209         return self.playlist_result(entries, video_id, title)
 210
 211
 212 class TeachableCourseIE(TeachableBaseIE):
 213     _VALID_URL = r'''(?x)
 214                         (?:
 215                             %shttps?://(?P<site_t>[^/]+)|
 216                             https?://(?:www\.)?(?P<site>%s)
 217                         )
 218                         /(?:courses|p)/(?:enrolled/)?(?P<id>[^/?#&]+)
 219                     ''' % TeachableBaseIE._VALID_URL_SUB_TUPLE
 220     _TESTS = [{
 221         'url': 'http://v1.upskillcourses.com/courses/essential-web-developer-course/',
 222         'info_dict': {
 223             'id': 'essential-web-developer-course',
 224             'title': 'The Essential Web Developer Course (Free)',
 225         },
 226         'playlist_count': 192,
 227     }, {
 228         'url': 'http://v1.upskillcourses.com/courses/119763/',
 229         'only_matching': True,
 230     }, {
 231         'url': 'http://v1.upskillcourses.com/courses/enrolled/119763',
 232         'only_matching': True,
 233     }, {
 234         'url': 'https://gns3.teachable.com/courses/enrolled/423415',
 235         'only_matching': True,
 236     }, {
 237         'url': 'teachable:https://learn.vrdev.school/p/gear-vr-developer-mini',
 238         'only_matching': True,
 239     }, {
 240         'url': 'teachable:https://filmsimplified.com/p/davinci-resolve-15-crash-course',
 241         'only_matching': True,
 242     }]
 243
 244     @classmethod
 245     def suitable(cls, url):
 246         return False if TeachableIE.suitable(url) else super(
 247             TeachableCourseIE, cls).suitable(url)
 248
 249     def _real_extract(self, url):
 250         mobj = self._match_valid_url(url)
 251         site = mobj.group('site') or mobj.group('site_t')
 252         course_id = mobj.group('id')
 253
 254         self._login(site)
 255
 256         prefixed = url.startswith(self._URL_PREFIX)
 257         if prefixed:
 258             prefix = self._URL_PREFIX
 259             url = url[len(prefix):]
 260
 261         webpage = self._download_webpage(url, course_id)
 262
 263         url_base = 'https://%s/' % site
 264
 265         entries = []
 266
 267         for mobj in re.finditer(
 268                 r'(?s)(?P<li><li[^>]+class=(["\'])(?:(?!\2).)*?section-item[^>]+>.+?</li>)',
 269                 webpage):
 270             li = mobj.group('li')
 271             if 'fa-youtube-play' not in li and not re.search(r'\d{1,2}:\d{2}', li):
 272                 continue
 273             lecture_url = self._search_regex(
 274                 r'<a[^>]+href=(["\'])(?P<url>(?:(?!\1).)+)\1', li,
 275                 'lecture url', default=None, group='url')
 276             if not lecture_url:
 277                 continue
 278             lecture_id = self._search_regex(
 279                 r'/lectures/(\d+)', lecture_url, 'lecture id', default=None)
 280             title = self._html_search_regex(
 281                 r'<span[^>]+class=["\']lecture-name[^>]+>([^<]+)', li,
 282                 'title', default=None)
 283             entry_url = urljoin(url_base, lecture_url)
 284             if prefixed:
 285                 entry_url = self._URL_PREFIX + entry_url
 286             entries.append(
 287                 self.url_result(
 288                     entry_url,
 289                     ie=TeachableIE.ie_key(), video_id=lecture_id,
 290                     video_title=clean_html(title)))
 291
 292         course_title = self._html_search_regex(
 293             (r'(?s)<img[^>]+class=["\']course-image[^>]+>\s*<h\d>(.+?)</h',
 294              r'(?s)<h\d[^>]+class=["\']course-title[^>]+>(.+?)</h'),
 295             webpage, 'course title', fatal=False)
 296
 297         return self.playlist_result(entries, course_id, course_title)