_ Git - youtube-dl/blob - youtube_dl/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         'upskillcourses.com': 'upskill',
  25         'academy.gns3.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(
  44             netrc_machine=self._SITES.get(site, site))
  45         if username is None:
  46             return
  47
  48         login_page, urlh = self._download_webpage_handle(
  49             'https://%s/sign_in' % site, None,
  50             'Downloading %s login page' % site)
  51
  52         def is_logged(webpage):
  53             return any(re.search(p, webpage) for p in (
  54                 r'class=["\']user-signout',
  55                 r'<a[^>]+\bhref=["\']/sign_out',
  56                 r'Log\s+[Oo]ut\s*<'))
  57
  58         if is_logged(login_page):
  59             self._logged_in = True
  60             return
  61
  62         login_url = urlh.geturl()
  63
  64         login_form = self._hidden_inputs(login_page)
  65
  66         login_form.update({
  67             'user[email]': username,
  68             'user[password]': password,
  69         })
  70
  71         post_url = self._search_regex(
  72             r'<form[^>]+action=(["\'])(?P<url>(?:(?!\1).)+)\1', login_page,
  73             'post url', default=login_url, group='url')
  74
  75         if not post_url.startswith('http'):
  76             post_url = urljoin(login_url, post_url)
  77
  78         response = self._download_webpage(
  79             post_url, None, 'Logging in to %s' % site,
  80             data=urlencode_postdata(login_form),
  81             headers={
  82                 'Content-Type': 'application/x-www-form-urlencoded',
  83                 'Referer': login_url,
  84             })
  85
  86         if '>I accept the new Privacy Policy<' in response:
  87             raise ExtractorError(
  88                 'Unable to login: %s asks you to accept new Privacy Policy. '
  89                 'Go to https://%s/ and accept.' % (site, site), expected=True)
  90
  91         # Successful login
  92         if is_logged(response):
  93             self._logged_in = True
  94             return
  95
  96         message = get_element_by_class('alert', response)
  97         if message is not None:
  98             raise ExtractorError(
  99                 'Unable to login: %s' % clean_html(message), expected=True)
 100
 101         raise ExtractorError('Unable to log in')
 102
 103
 104 class TeachableIE(TeachableBaseIE):
 105     _VALID_URL = r'''(?x)
 106                     (?:
 107                         %shttps?://(?P<site_t>[^/]+)|
 108                         https?://(?:www\.)?(?P<site>%s)
 109                     )
 110                     /courses/[^/]+/lectures/(?P<id>\d+)
 111                     ''' % TeachableBaseIE._VALID_URL_SUB_TUPLE
 112
 113     _TESTS = [{
 114         'url': 'http://upskillcourses.com/courses/essential-web-developer-course/lectures/1747100',
 115         'info_dict': {
 116             'id': 'uzw6zw58or',
 117             'ext': 'mp4',
 118             'title': 'Welcome to the Course!',
 119             'description': 'md5:65edb0affa582974de4625b9cdea1107',
 120             'duration': 138.763,
 121             'timestamp': 1479846621,
 122             'upload_date': '20161122',
 123         },
 124         'params': {
 125             'skip_download': True,
 126         },
 127     }, {
 128         'url': 'http://upskillcourses.com/courses/119763/lectures/1747100',
 129         'only_matching': True,
 130     }, {
 131         'url': 'https://academy.gns3.com/courses/423415/lectures/6885939',
 132         'only_matching': True,
 133     }, {
 134         'url': 'teachable:https://upskillcourses.com/courses/essential-web-developer-course/lectures/1747100',
 135         'only_matching': True,
 136     }]
 137
 138     @staticmethod
 139     def _is_teachable(webpage):
 140         return 'teachableTracker.linker:autoLink' in webpage and re.search(
 141             r'<link[^>]+href=["\']https?://process\.fs\.teachablecdn\.com',
 142             webpage)
 143
 144     @staticmethod
 145     def _extract_url(webpage, source_url):
 146         if not TeachableIE._is_teachable(webpage):
 147             return
 148         if re.match(r'https?://[^/]+/(?:courses|p)', source_url):
 149             return '%s%s' % (TeachableBaseIE._URL_PREFIX, source_url)
 150
 151     def _real_extract(self, url):
 152         mobj = re.match(self._VALID_URL, url)
 153         site = mobj.group('site') or mobj.group('site_t')
 154         video_id = mobj.group('id')
 155
 156         self._login(site)
 157
 158         prefixed = url.startswith(self._URL_PREFIX)
 159         if prefixed:
 160             url = url[len(self._URL_PREFIX):]
 161
 162         webpage = self._download_webpage(url, video_id)
 163
 164         wistia_urls = WistiaIE._extract_urls(webpage)
 165         if not wistia_urls:
 166             if any(re.search(p, webpage) for p in (
 167                     r'class=["\']lecture-contents-locked',
 168                     r'>\s*Lecture contents locked',
 169                     r'id=["\']lecture-locked',
 170                     # https://academy.tailoredtutors.co.uk/courses/108779/lectures/1955313
 171                     r'class=["\'](?:inner-)?lesson-locked',
 172                     r'>LESSON LOCKED<')):
 173                 self.raise_login_required('Lecture contents locked')
 174             raise ExtractorError('Unable to find video URL')
 175
 176         title = self._og_search_title(webpage, default=None)
 177
 178         chapter = None
 179         chapter_number = None
 180         section_item = self._search_regex(
 181             r'(?s)(?P<li><li[^>]+\bdata-lecture-id=["\']%s[^>]+>.+?</li>)' % video_id,
 182             webpage, 'section item', default=None, group='li')
 183         if section_item:
 184             chapter_number = int_or_none(self._search_regex(
 185                 r'data-ss-position=["\'](\d+)', section_item, 'section id',
 186                 default=None))
 187             if chapter_number is not None:
 188                 sections = []
 189                 for s in re.findall(
 190                         r'(?s)<div[^>]+\bclass=["\']section-title[^>]+>(.+?)</div>', webpage):
 191                     section = strip_or_none(clean_html(s))
 192                     if not section:
 193                         sections = []
 194                         break
 195                     sections.append(section)
 196                 if chapter_number <= len(sections):
 197                     chapter = sections[chapter_number - 1]
 198
 199         entries = [{
 200             '_type': 'url_transparent',
 201             'url': wistia_url,
 202             'ie_key': WistiaIE.ie_key(),
 203             'title': title,
 204             'chapter': chapter,
 205             'chapter_number': chapter_number,
 206         } for wistia_url in wistia_urls]
 207
 208         return self.playlist_result(entries, video_id, title)
 209
 210
 211 class TeachableCourseIE(TeachableBaseIE):
 212     _VALID_URL = r'''(?x)
 213                         (?:
 214                             %shttps?://(?P<site_t>[^/]+)|
 215                             https?://(?:www\.)?(?P<site>%s)
 216                         )
 217                         /(?:courses|p)/(?:enrolled/)?(?P<id>[^/?#&]+)
 218                     ''' % TeachableBaseIE._VALID_URL_SUB_TUPLE
 219     _TESTS = [{
 220         'url': 'http://upskillcourses.com/courses/essential-web-developer-course/',
 221         'info_dict': {
 222             'id': 'essential-web-developer-course',
 223             'title': 'The Essential Web Developer Course (Free)',
 224         },
 225         'playlist_count': 192,
 226     }, {
 227         'url': 'http://upskillcourses.com/courses/119763/',
 228         'only_matching': True,
 229     }, {
 230         'url': 'http://upskillcourses.com/courses/enrolled/119763',
 231         'only_matching': True,
 232     }, {
 233         'url': 'https://academy.gns3.com/courses/enrolled/423415',
 234         'only_matching': True,
 235     }, {
 236         'url': 'teachable:https://learn.vrdev.school/p/gear-vr-developer-mini',
 237         'only_matching': True,
 238     }, {
 239         'url': 'teachable:https://filmsimplified.com/p/davinci-resolve-15-crash-course',
 240         'only_matching': True,
 241     }]
 242
 243     @classmethod
 244     def suitable(cls, url):
 245         return False if TeachableIE.suitable(url) else super(
 246             TeachableCourseIE, cls).suitable(url)
 247
 248     def _real_extract(self, url):
 249         mobj = re.match(self._VALID_URL, url)
 250         site = mobj.group('site') or mobj.group('site_t')
 251         course_id = mobj.group('id')
 252
 253         self._login(site)
 254
 255         prefixed = url.startswith(self._URL_PREFIX)
 256         if prefixed:
 257             prefix = self._URL_PREFIX
 258             url = url[len(prefix):]
 259
 260         webpage = self._download_webpage(url, course_id)
 261
 262         url_base = 'https://%s/' % site
 263
 264         entries = []
 265
 266         for mobj in re.finditer(
 267                 r'(?s)(?P<li><li[^>]+class=(["\'])(?:(?!\2).)*?section-item[^>]+>.+?</li>)',
 268                 webpage):
 269             li = mobj.group('li')
 270             if 'fa-youtube-play' not in li:
 271                 continue
 272             lecture_url = self._search_regex(
 273                 r'<a[^>]+href=(["\'])(?P<url>(?:(?!\1).)+)\1', li,
 274                 'lecture url', default=None, group='url')
 275             if not lecture_url:
 276                 continue
 277             lecture_id = self._search_regex(
 278                 r'/lectures/(\d+)', lecture_url, 'lecture id', default=None)
 279             title = self._html_search_regex(
 280                 r'<span[^>]+class=["\']lecture-name[^>]+>([^<]+)', li,
 281                 'title', default=None)
 282             entry_url = urljoin(url_base, lecture_url)
 283             if prefixed:
 284                 entry_url = self._URL_PREFIX + entry_url
 285             entries.append(
 286                 self.url_result(
 287                     entry_url,
 288                     ie=TeachableIE.ie_key(), video_id=lecture_id,
 289                     video_title=clean_html(title)))
 290
 291         course_title = self._html_search_regex(
 292             (r'(?s)<img[^>]+class=["\']course-image[^>]+>\s*<h\d>(.+?)</h',
 293              r'(?s)<h\d[^>]+class=["\']course-title[^>]+>(.+?)</h'),
 294             webpage, 'course title', fatal=False)
 295
 296         return self.playlist_result(entries, course_id, course_title)