1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
|
from __future__ import unicode_literals
import json
import random
import collections
from .common import InfoExtractor
from ..compat import (
compat_str,
compat_urllib_parse,
compat_urllib_request,
compat_urlparse,
)
from ..utils import (
ExtractorError,
int_or_none,
parse_duration,
)
class PluralsightBaseIE(InfoExtractor):
_API_BASE = 'http://app.pluralsight.com'
class PluralsightIE(PluralsightBaseIE):
IE_NAME = 'pluralsight'
_VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/training/player\?'
_LOGIN_URL = 'https://app.pluralsight.com/id/'
_NETRC_MACHINE = 'pluralsight'
_TESTS = [{
'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',
'md5': '4d458cf5cf4c593788672419a8dd4cf8',
'info_dict': {
'id': 'hosting-sql-server-windows-azure-iaas-m7-mgmt-04',
'ext': 'mp4',
'title': 'Management of SQL Server - Demo Monitoring',
'duration': 338,
},
'skip': 'Requires pluralsight account credentials',
}, {
'url': 'https://app.pluralsight.com/training/player?course=angularjs-get-started&author=scott-allen&name=angularjs-get-started-m1-introduction&clip=0&mode=live',
'only_matching': True,
}, {
# available without pluralsight account
'url': 'http://app.pluralsight.com/training/player?author=scott-allen&name=angularjs-get-started-m1-introduction&mode=live&clip=0&course=angularjs-get-started',
'only_matching': True,
}]
def _real_initialize(self):
self._login()
def _login(self):
(username, password) = self._get_login_info()
if username is None:
return
login_page = self._download_webpage(
self._LOGIN_URL, None, 'Downloading login page')
login_form = self._hidden_inputs(login_page)
login_form.update({
'Username': username.encode('utf-8'),
'Password': password.encode('utf-8'),
})
post_url = self._search_regex(
r'<form[^>]+action=(["\'])(?P<url>.+?)\1', login_page,
'post url', default=self._LOGIN_URL, group='url')
if not post_url.startswith('http'):
post_url = compat_urlparse.urljoin(self._LOGIN_URL, post_url)
request = compat_urllib_request.Request(
post_url, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
request.add_header('Content-Type', 'application/x-www-form-urlencoded')
response = self._download_webpage(
request, None, 'Logging in as %s' % username)
error = self._search_regex(
r'<span[^>]+class="field-validation-error"[^>]*>([^<]+)</span>',
response, 'error message', default=None)
if error:
raise ExtractorError('Unable to login: %s' % error, expected=True)
if all(p not in response for p in ('__INITIAL_STATE__', '"currentUser"')):
raise ExtractorError('Unable to log in')
def _real_extract(self, url):
qs = compat_urlparse.parse_qs(compat_urlparse.urlparse(url).query)
author = qs.get('author', [None])[0]
name = qs.get('name', [None])[0]
clip_id = qs.get('clip', [None])[0]
course = qs.get('course', [None])[0]
if any(not f for f in (author, name, clip_id, course,)):
raise ExtractorError('Invalid URL', expected=True)
display_id = '%s-%s' % (name, clip_id)
webpage = self._download_webpage(url, display_id)
collection = self._parse_json(
self._search_regex(
r'moduleCollection\s*:\s*new\s+ModuleCollection\((\[.+?\])\s*,\s*\$rootScope\)',
webpage, 'modules'),
display_id)
module, clip = None, None
for module_ in collection:
if module_.get('moduleName') == name:
module = module_
for clip_ in module_.get('clips', []):
clip_index = clip_.get('clipIndex')
if clip_index is None:
continue
if compat_str(clip_index) == clip_id:
clip = clip_
break
if not clip:
raise ExtractorError('Unable to resolve clip')
QUALITIES = {
'low': {'width': 640, 'height': 480},
'medium': {'width': 848, 'height': 640},
'high': {'width': 1024, 'height': 768},
}
AllowedQuality = collections.namedtuple('AllowedQuality', ['ext', 'qualities'])
ALLOWED_QUALITIES = (
AllowedQuality('webm', ('high',)),
AllowedQuality('mp4', ('low', 'medium', 'high',)),
)
# In order to minimize the number of calls to ViewClip API and reduce
# the probability of being throttled or banned by Pluralsight we will request
# only single format until explicit listformats was requested.
if self._downloader.params.get('listformats', False):
allowed_qualities = ALLOWED_QUALITIES
else:
def guess_allowed_qualities():
req_format = self._downloader.params.get('format') or 'best'
req_format_split = req_format.split('-')
if len(req_format_split) > 1:
req_ext, req_quality = req_format_split
for allowed_quality in ALLOWED_QUALITIES:
if req_ext == allowed_quality.ext and req_quality in allowed_quality.qualities:
return (AllowedQuality(req_ext, (req_quality, )), )
req_ext = 'webm' if self._downloader.params.get('prefer_free_formats') else 'mp4'
return (AllowedQuality(req_ext, ('high', )), )
allowed_qualities = guess_allowed_qualities()
formats = []
for ext, qualities in allowed_qualities:
for quality in qualities:
f = QUALITIES[quality].copy()
clip_post = {
'a': author,
'cap': 'false',
'cn': clip_id,
'course': course,
'lc': 'en',
'm': name,
'mt': ext,
'q': '%dx%d' % (f['width'], f['height']),
}
request = compat_urllib_request.Request(
'%s/training/Player/ViewClip' % self._API_BASE,
json.dumps(clip_post).encode('utf-8'))
request.add_header('Content-Type', 'application/json;charset=utf-8')
format_id = '%s-%s' % (ext, quality)
clip_url = self._download_webpage(
request, display_id, 'Downloading %s URL' % format_id, fatal=False)
# Pluralsight tracks multiple sequential calls to ViewClip API and start
# to return 429 HTTP errors after some time (see
# https://github.com/rg3/youtube-dl/pull/6989). Moreover it may even lead
# to account ban (see https://github.com/rg3/youtube-dl/issues/6842).
# To somewhat reduce the probability of these consequences
# we will sleep random amount of time before each call to ViewClip.
self._sleep(
random.randint(2, 5), display_id,
'%(video_id)s: Waiting for %(timeout)s seconds to avoid throttling')
if not clip_url:
continue
f.update({
'url': clip_url,
'ext': ext,
'format_id': format_id,
})
formats.append(f)
self._sort_formats(formats)
# TODO: captions
# http://www.pluralsight.com/training/Player/ViewClip + cap = true
# or
# http://www.pluralsight.com/training/Player/Captions
# { a = author, cn = clip_id, lc = end, m = name }
return {
'id': clip['clipName'],
'title': '%s - %s' % (module['title'], clip['title']),
'duration': int_or_none(clip.get('duration')) or parse_duration(clip.get('formattedDuration')),
'creator': author,
'formats': formats
}
class PluralsightCourseIE(PluralsightBaseIE):
IE_NAME = 'pluralsight:course'
_VALID_URL = r'https?://(?:(?:www|app)\.)?pluralsight\.com/(?:library/)?courses/(?P<id>[^/]+)'
_TESTS = [{
# Free course from Pluralsight Starter Subscription for Microsoft TechNet
# https://offers.pluralsight.com/technet?loc=zTS3z&prod=zOTprodz&tech=zOttechz&prog=zOTprogz&type=zSOz&media=zOTmediaz&country=zUSz
'url': 'http://www.pluralsight.com/courses/hosting-sql-server-windows-azure-iaas',
'info_dict': {
'id': 'hosting-sql-server-windows-azure-iaas',
'title': 'Hosting SQL Server in Microsoft Azure IaaS Fundamentals',
'description': 'md5:61b37e60f21c4b2f91dc621a977d0986',
},
'playlist_count': 31,
}, {
# available without pluralsight account
'url': 'https://www.pluralsight.com/courses/angularjs-get-started',
'only_matching': True,
}, {
'url': 'https://app.pluralsight.com/library/courses/understanding-microsoft-azure-amazon-aws/table-of-contents',
'only_matching': True,
}]
def _real_extract(self, url):
course_id = self._match_id(url)
# TODO: PSM cookie
course = self._download_json(
'%s/data/course/%s' % (self._API_BASE, course_id),
course_id, 'Downloading course JSON')
title = course['title']
description = course.get('description') or course.get('shortDescription')
course_data = self._download_json(
'%s/data/course/content/%s' % (self._API_BASE, course_id),
course_id, 'Downloading course data JSON')
entries = []
for module in course_data:
for clip in module.get('clips', []):
player_parameters = clip.get('playerParameters')
if not player_parameters:
continue
entries.append(self.url_result(
'%s/training/player?%s' % (self._API_BASE, player_parameters),
'Pluralsight'))
return self.playlist_result(entries, course_id, title, description)
|
