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[youtube-dl] / youtube_dl / extractor / pluralsight.py
1 from __future__ import unicode_literals
2
3 import re
4 import json
5
6 from .common import InfoExtractor
7 from ..compat import (
8     compat_str,
9     compat_urllib_parse,
10     compat_urllib_request,
11     compat_urlparse,
12 )
13 from ..utils import (
14     ExtractorError,
15     int_or_none,
16     parse_duration,
17 )
18
19
20 class PluralsightIE(InfoExtractor):
21     IE_NAME = 'pluralsight'
22     _VALID_URL = r'https?://(?:www\.)?pluralsight\.com/training/player\?author=(?P<author>[^&]+)&name=(?P<name>[^&]+)(?:&mode=live)?&clip=(?P<clip>\d+)&course=(?P<course>[^&]+)'
23     _LOGIN_URL = 'https://www.pluralsight.com/id/'
24     _NETRC_MACHINE = 'pluralsight'
25
26     _TEST = {
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
38     def _real_initialize(self):
39         self._login()
40
41     def _login(self):
42         (username, password) = self._get_login_info()
43         if username is None:
44             self.raise_login_required('Pluralsight account is required')
45
46         login_page = self._download_webpage(
47             self._LOGIN_URL, None, 'Downloading login page')
48
49         login_form = self._hidden_inputs(login_page)
50
51         login_form.update({
52             'Username': username.encode('utf-8'),
53             'Password': password.encode('utf-8'),
54         })
55
56         post_url = self._search_regex(
57             r'<form[^>]+action=(["\'])(?P<url>.+?)\1', login_page,
58             'post url', default=self._LOGIN_URL, group='url')
59
60         if not post_url.startswith('http'):
61             post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
62
63         request = compat_urllib_request.Request(
64             post_url, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
65         request.add_header('Content-Type', 'application/x-www-form-urlencoded')
66
67         response = self._download_webpage(
68             request, None, 'Logging in as %s' % username)
69
70         error = self._search_regex(
71             r'<span[^>]+class="field-validation-error"[^>]*>([^<]+)</span>',
72             response, 'error message', default=None)
73         if error:
74             raise ExtractorError('Unable to login: %s' % error, expected=True)
75
76     def _real_extract(self, url):
77         mobj = re.match(self._VALID_URL, url)
78         author = mobj.group('author')
79         name = mobj.group('name')
80         clip_id = mobj.group('clip')
81         course = mobj.group('course')
82
83         display_id = '%s-%s' % (name, clip_id)
84
85         webpage = self._download_webpage(url, display_id)
86
87         collection = self._parse_json(
88             self._search_regex(
89                 r'moduleCollection\s*:\s*new\s+ModuleCollection\((\[.+?\])\s*,\s*\$rootScope\)',
90                 webpage, 'modules'),
91             display_id)
92
93         module, clip = None, None
94
95         for module_ in collection:
96             if module_.get('moduleName') == name:
97                 module = module_
98                 for clip_ in module_.get('clips', []):
99                     clip_index = clip_.get('clipIndex')
100                     if clip_index is None:
101                         continue
102                     if compat_str(clip_index) == clip_id:
103                         clip = clip_
104                         break
105
106         if not clip:
107             raise ExtractorError('Unable to resolve clip')
108
109         QUALITIES = {
110             'low': {'width': 640, 'height': 480},
111             'medium': {'width': 848, 'height': 640},
112             'high': {'width': 1024, 'height': 768},
113         }
114
115         ALLOWED_QUALITIES = (
116             ('webm', ('high',)),
117             ('mp4', ('low', 'medium', 'high',)),
118         )
119
120         formats = []
121         for ext, qualities in ALLOWED_QUALITIES:
122             for quality in qualities:
123                 f = QUALITIES[quality].copy()
124                 clip_post = {
125                     'a': author,
126                     'cap': 'false',
127                     'cn': clip_id,
128                     'course': course,
129                     'lc': 'en',
130                     'm': name,
131                     'mt': ext,
132                     'q': '%dx%d' % (f['width'], f['height']),
133                 }
134                 request = compat_urllib_request.Request(
135                     'http://www.pluralsight.com/training/Player/ViewClip',
136                     json.dumps(clip_post).encode('utf-8'))
137                 request.add_header('Content-Type', 'application/json;charset=utf-8')
138                 format_id = '%s-%s' % (ext, quality)
139                 clip_url = self._download_webpage(
140                     request, display_id, 'Downloading %s URL' % format_id, fatal=False)
141                 if not clip_url:
142                     continue
143                 f.update({
144                     'url': clip_url,
145                     'ext': ext,
146                     'format_id': format_id,
147                 })
148                 formats.append(f)
149         self._sort_formats(formats)
150
151         # TODO: captions
152         # http://www.pluralsight.com/training/Player/ViewClip + cap = true
153         # or
154         # http://www.pluralsight.com/training/Player/Captions
155         # { a = author, cn = clip_id, lc = end, m = name }
156
157         return {
158             'id': clip['clipName'],
159             'title': '%s - %s' % (module['title'], clip['title']),
160             'duration': int_or_none(clip.get('duration')) or parse_duration(clip.get('formattedDuration')),
161             'creator': author,
162             'formats': formats
163         }
164
165
166 class PluralsightCourseIE(InfoExtractor):
167     IE_NAME = 'pluralsight:course'
168     _VALID_URL = r'https?://(?:www\.)?pluralsight\.com/courses/(?P<id>[^/]+)'
169     _TEST = {
170         # Free course from Pluralsight Starter Subscription for Microsoft TechNet
171         # https://offers.pluralsight.com/technet?loc=zTS3z&prod=zOTprodz&tech=zOttechz&prog=zOTprogz&type=zSOz&media=zOTmediaz&country=zUSz
172         'url': 'http://www.pluralsight.com/courses/hosting-sql-server-windows-azure-iaas',
173         'info_dict': {
174             'id': 'hosting-sql-server-windows-azure-iaas',
175             'title': 'Hosting SQL Server in Microsoft Azure IaaS Fundamentals',
176             'description': 'md5:61b37e60f21c4b2f91dc621a977d0986',
177         },
178         'playlist_count': 31,
179     }
180
181     def _real_extract(self, url):
182         course_id = self._match_id(url)
183
184         # TODO: PSM cookie
185
186         course = self._download_json(
187             'http://www.pluralsight.com/data/course/%s' % course_id,
188             course_id, 'Downloading course JSON')
189
190         title = course['title']
191         description = course.get('description') or course.get('shortDescription')
192
193         course_data = self._download_json(
194             'http://www.pluralsight.com/data/course/content/%s' % course_id,
195             course_id, 'Downloading course data JSON')
196
197         entries = []
198         for module in course_data:
199             for clip in module.get('clips', []):
200                 player_parameters = clip.get('playerParameters')
201                 if not player_parameters:
202                     continue
203                 entries.append(self.url_result(
204                     'http://www.pluralsight.com/training/player?%s' % player_parameters,
205                     'Pluralsight'))
206
207         return self.playlist_result(entries, course_id, title, description)