_ Git - youtube-dl/blob - youtube_dl/extractor/pluralsight.py

   1 from __future__ import unicode_literals
   2
   3 import json
   4
   5 from .common import InfoExtractor
   6 from ..compat import (
   7     compat_str,
   8     compat_urllib_parse,
   9     compat_urllib_request,
  10     compat_urlparse,
  11 )
  12 from ..utils import (
  13     ExtractorError,
  14     int_or_none,
  15     parse_duration,
  16 )
  17
  18
  19 class PluralsightIE(InfoExtractor):
  20     IE_NAME = 'pluralsight'
  21     _VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/training/player\?'
  22     _LOGIN_URL = 'https://app.pluralsight.com/id/'
  23     _API_BASE = 'http://app.pluralsight.com'
  24     _NETRC_MACHINE = 'pluralsight'
  25
  26     _TESTS = [{
  27         'url': 'http://www.pluralsight.com/training/player?author=mike-mckeown&name=hosting-sql-server-windows-azure-iaas-m7-mgmt&mode=live&clip=3&course=hosting-sql-server-windows-azure-iaas',
  28         'md5': '4d458cf5cf4c593788672419a8dd4cf8',
  29         'info_dict': {
  30             'id': 'hosting-sql-server-windows-azure-iaas-m7-mgmt-04',
  31             'ext': 'mp4',
  32             'title': 'Management of SQL Server - Demo Monitoring',
  33             'duration': 338,
  34         },
  35         'skip': 'Requires pluralsight account credentials',
  36     }, {
  37         'url': 'https://app.pluralsight.com/training/player?course=angularjs-get-started&author=scott-allen&name=angularjs-get-started-m1-introduction&clip=0&mode=live',
  38         'only_matching': True,
  39     }, {
  40         # available without pluralsight account
  41         'url': 'http://app.pluralsight.com/training/player?author=scott-allen&name=angularjs-get-started-m1-introduction&mode=live&clip=0&course=angularjs-get-started',
  42         'only_matching': True,
  43     }]
  44
  45     def _real_initialize(self):
  46         self._login()
  47
  48     def _login(self):
  49         (username, password) = self._get_login_info()
  50         if username is None:
  51             return
  52
  53         login_page = self._download_webpage(
  54             self._LOGIN_URL, None, 'Downloading login page')
  55
  56         login_form = self._hidden_inputs(login_page)
  57
  58         login_form.update({
  59             'Username': username.encode('utf-8'),
  60             'Password': password.encode('utf-8'),
  61         })
  62
  63         post_url = self._search_regex(
  64             r'<form[^>]+action=(["\'])(?P<url>.+?)\1', login_page,
  65             'post url', default=self._LOGIN_URL, group='url')
  66
  67         if not post_url.startswith('http'):
  68             post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
  69
  70         request = compat_urllib_request.Request(
  71             post_url, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
  72         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
  73
  74         response = self._download_webpage(
  75             request, None, 'Logging in as %s' % username)
  76
  77         error = self._search_regex(
  78             r'<span[^>]+class="field-validation-error"[^>]*>([^<]+)</span>',
  79             response, 'error message', default=None)
  80         if error:
  81             raise ExtractorError('Unable to login: %s' % error, expected=True)
  82
  83     def _real_extract(self, url):
  84         qs = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
  85
  86         author = qs.get('author', [None])[0]
  87         name = qs.get('name', [None])[0]
  88         clip_id = qs.get('clip', [None])[0]
  89         course = qs.get('course', [None])[0]
  90
  91         if any(not f for f in (author, name, clip_id, course,)):
  92             raise ExtractorError('Invalid URL', expected=True)
  93
  94         display_id = '%s-%s' % (name, clip_id)
  95
  96         webpage = self._download_webpage(url, display_id)
  97
  98         collection = self._parse_json(
  99             self._search_regex(
 100                 r'moduleCollection\s*:\s*new\s+ModuleCollection\((\[.+?\])\s*,\s*\$rootScope\)',
 101                 webpage, 'modules'),
 102             display_id)
 103
 104         module, clip = None, None
 105
 106         for module_ in collection:
 107             if module_.get('moduleName') == name:
 108                 module = module_
 109                 for clip_ in module_.get('clips', []):
 110                     clip_index = clip_.get('clipIndex')
 111                     if clip_index is None:
 112                         continue
 113                     if compat_str(clip_index) == clip_id:
 114                         clip = clip_
 115                         break
 116
 117         if not clip:
 118             raise ExtractorError('Unable to resolve clip')
 119
 120         QUALITIES = {
 121             'low': {'width': 640, 'height': 480},
 122             'medium': {'width': 848, 'height': 640},
 123             'high': {'width': 1024, 'height': 768},
 124         }
 125
 126         ALLOWED_QUALITIES = (
 127             ('webm', ('high',)),
 128             ('mp4', ('low', 'medium', 'high',)),
 129         )
 130
 131         formats = []
 132         for ext, qualities in ALLOWED_QUALITIES:
 133             for quality in qualities:
 134                 f = QUALITIES[quality].copy()
 135                 clip_post = {
 136                     'a': author,
 137                     'cap': 'false',
 138                     'cn': clip_id,
 139                     'course': course,
 140                     'lc': 'en',
 141                     'm': name,
 142                     'mt': ext,
 143                     'q': '%dx%d' % (f['width'], f['height']),
 144                 }
 145                 request = compat_urllib_request.Request(
 146                     '%s/training/Player/ViewClip' % self._API_BASE,
 147                     json.dumps(clip_post).encode('utf-8'))
 148                 request.add_header('Content-Type', 'application/json;charset=utf-8')
 149                 format_id = '%s-%s' % (ext, quality)
 150                 clip_url = self._download_webpage(
 151                     request, display_id, 'Downloading %s URL' % format_id, fatal=False)
 152                 if not clip_url:
 153                     continue
 154                 f.update({
 155                     'url': clip_url,
 156                     'ext': ext,
 157                     'format_id': format_id,
 158                 })
 159                 formats.append(f)
 160         self._sort_formats(formats)
 161
 162         # TODO: captions
 163         # http://www.pluralsight.com/training/Player/ViewClip + cap = true
 164         # or
 165         # http://www.pluralsight.com/training/Player/Captions
 166         # { a = author, cn = clip_id, lc = end, m = name }
 167
 168         return {
 169             'id': clip['clipName'],
 170             'title': '%s - %s' % (module['title'], clip['title']),
 171             'duration': int_or_none(clip.get('duration')) or parse_duration(clip.get('formattedDuration')),
 172             'creator': author,
 173             'formats': formats
 174         }
 175
 176
 177 class PluralsightCourseIE(InfoExtractor):
 178     IE_NAME = 'pluralsight:course'
 179     _VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/(?:library/)?courses/(?P<id>[^/]+)'
 180     _TESTS = [{
 181         # Free course from Pluralsight Starter Subscription for Microsoft TechNet
 182         # https://offers.pluralsight.com/technet?loc=zTS3z&prod=zOTprodz&tech=zOttechz&prog=zOTprogz&type=zSOz&media=zOTmediaz&country=zUSz
 183         'url': 'http://www.pluralsight.com/courses/hosting-sql-server-windows-azure-iaas',
 184         'info_dict': {
 185             'id': 'hosting-sql-server-windows-azure-iaas',
 186             'title': 'Hosting SQL Server in Microsoft Azure IaaS Fundamentals',
 187             'description': 'md5:61b37e60f21c4b2f91dc621a977d0986',
 188         },
 189         'playlist_count': 31,
 190     }, {
 191         # available without pluralsight account
 192         'url': 'https://www.pluralsight.com/courses/angularjs-get-started',
 193         'only_matching': True,
 194     }, {
 195         'url': 'https://app.pluralsight.com/library/courses/understanding-microsoft-azure-amazon-aws/table-of-contents',
 196         'only_matching': True,
 197     }]
 198
 199     def _real_extract(self, url):
 200         course_id = self._match_id(url)
 201
 202         # TODO: PSM cookie
 203
 204         course = self._download_json(
 205             '%s/data/course/%s' % (self._API_BASE, course_id),
 206             course_id, 'Downloading course JSON')
 207
 208         title = course['title']
 209         description = course.get('description') or course.get('shortDescription')
 210
 211         course_data = self._download_json(
 212             '%s/data/course/content/%s' % (self._API_BASE, course_id),
 213             course_id, 'Downloading course data JSON')
 214
 215         entries = []
 216         for module in course_data:
 217             for clip in module.get('clips', []):
 218                 player_parameters = clip.get('playerParameters')
 219                 if not player_parameters:
 220                     continue
 221                 entries.append(self.url_result(
 222                     '%s/training/player?%s' % (self._API_BASE, player_parameters),
 223                     'Pluralsight'))
 224
 225         return self.playlist_result(entries, course_id, title, description)