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