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from __future__ import unicode_literals
import collections
import json
import os
import random
import re
from .common import InfoExtractor
from ..compat import (
compat_str,
compat_urlparse,
)
from ..utils import (
dict_get,
ExtractorError,
float_or_none,
int_or_none,
parse_duration,
qualities,
srt_subtitles_timecode,
try_get,
update_url_query,
urlencode_postdata,
)
class PluralsightBaseIE(InfoExtractor):
_API_BASE = 'https://app.pluralsight.com'
_GRAPHQL_EP = '%s/player/api/graphql' % _API_BASE
_GRAPHQL_HEADERS = {
'Content-Type': 'application/json;charset=UTF-8',
}
_GRAPHQL_COURSE_TMPL = '''
query BootstrapPlayer {
rpc {
bootstrapPlayer {
profile {
firstName
lastName
email
username
userHandle
authed
isAuthed
plan
}
course(courseId: "%s") {
name
title
courseHasCaptions
translationLanguages {
code
name
}
supportsWideScreenVideoFormats
timestamp
modules {
name
title
duration
formattedDuration
author
authorized
clips {
authorized
clipId
duration
formattedDuration
id
index
moduleIndex
moduleTitle
name
title
watched
}
}
}
}
}
}'''
def _download_course(self, course_id, url, display_id):
try:
return self._download_course_rpc(course_id, url, display_id)
except ExtractorError:
# Old API fallback
return self._download_json(
'https://app.pluralsight.com/player/user/api/v1/player/payload',
display_id, data=urlencode_postdata({'courseId': course_id}),
headers={'Referer': url})
def _download_course_rpc(self, course_id, url, display_id):
response = self._download_json(
self._GRAPHQL_EP, display_id, data=json.dumps({
'query': self._GRAPHQL_COURSE_TMPL % course_id,
'variables': {}
}).encode('utf-8'), headers=self._GRAPHQL_HEADERS)
course = try_get(
response, lambda x: x['data']['rpc']['bootstrapPlayer']['course'],
dict)
if course:
return course
raise ExtractorError(
'%s said: %s' % (self.IE_NAME, response['error']['message']),
expected=True)
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': '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,
}, {
'url': 'https://app.pluralsight.com/player?course=ccna-intro-networking&author=ross-bagurdes&name=ccna-intro-networking-m06&clip=0',
'only_matching': True,
}]
GRAPHQL_VIEWCLIP_TMPL = '''
query viewClip {
viewClip(input: {
author: "%(author)s",
clipIndex: %(clipIndex)d,
courseName: "%(courseName)s",
includeCaptions: %(includeCaptions)s,
locale: "%(locale)s",
mediaType: "%(mediaType)s",
moduleName: "%(moduleName)s",
quality: "%(quality)s"
}) {
urls {
url
cdn
rank
source
},
status
}
}'''
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,
'Password': password,
})
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)
response = self._download_webpage(
post_url, None, 'Logging in',
data=urlencode_postdata(login_form),
headers={'Content-Type': 'application/x-www-form-urlencoded'})
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(not re.search(p, response) for p in (
r'__INITIAL_STATE__', r'["\']currentUser["\']',
# new layout?
r'>\s*Sign out\s*<')):
BLOCKED = 'Your account has been blocked due to suspicious activity'
if BLOCKED in response:
raise ExtractorError(
'Unable to login: %s' % BLOCKED, expected=True)
MUST_AGREE = 'To continue using Pluralsight, you must agree to'
if any(p in response for p in (MUST_AGREE, '>Disagree<', '>Agree<')):
raise ExtractorError(
'Unable to login: %s some documents. Go to pluralsight.com, '
'log in and agree with what Pluralsight requires.'
% MUST_AGREE, expected=True)
raise ExtractorError('Unable to log in')
def _get_subtitles(self, author, clip_idx, clip_id, lang, name, duration, video_id):
captions = None
if clip_id:
captions = self._download_json(
'%s/transcript/api/v1/caption/json/%s/%s'
% (self._API_BASE, clip_id, lang), video_id,
'Downloading captions JSON', 'Unable to download captions JSON',
fatal=False)
if not captions:
captions_post = {
'a': author,
'cn': int(clip_idx),
'lc': lang,
'm': name,
}
captions = self._download_json(
'%s/player/retrieve-captions' % self._API_BASE, video_id,
'Downloading captions JSON', 'Unable to download captions JSON',
fatal=False, data=json.dumps(captions_post).encode('utf-8'),
headers={'Content-Type': 'application/json;charset=utf-8'})
if captions:
return {
lang: [{
'ext': 'json',
'data': json.dumps(captions),
}, {
'ext': 'srt',
'data': self._convert_subtitles(duration, captions),
}]
}
@staticmethod
def _convert_subtitles(duration, subs):
srt = ''
TIME_OFFSET_KEYS = ('displayTimeOffset', 'DisplayTimeOffset')
TEXT_KEYS = ('text', 'Text')
for num, current in enumerate(subs):
current = subs[num]
start, text = (
float_or_none(dict_get(current, TIME_OFFSET_KEYS, skip_false_values=False)),
dict_get(current, TEXT_KEYS))
if start is None or text is None:
continue
end = duration if num == len(subs) - 1 else float_or_none(
dict_get(subs[num + 1], TIME_OFFSET_KEYS, skip_false_values=False))
if end is None:
continue
srt += os.linesep.join(
(
'%d' % num,
'%s --> %s' % (
srt_subtitles_timecode(start),
srt_subtitles_timecode(end)),
text,
os.linesep,
))
return srt
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_idx = qs.get('clip', [None])[0]
course_name = qs.get('course', [None])[0]
if any(not f for f in (author, name, clip_idx, course_name,)):
raise ExtractorError('Invalid URL', expected=True)
display_id = '%s-%s' % (name, clip_idx)
course = self._download_course(course_name, url, display_id)
collection = course['modules']
clip = None
for module_ in collection:
if name in (module_.get('moduleName'), module_.get('name')):
for clip_ in module_.get('clips', []):
clip_index = clip_.get('clipIndex')
if clip_index is None:
clip_index = clip_.get('index')
if clip_index is None:
continue
if compat_str(clip_index) == clip_idx:
clip = clip_
break
if not clip:
raise ExtractorError('Unable to resolve clip')
title = clip['title']
clip_id = clip.get('clipName') or clip.get('name') or clip['clipId']
QUALITIES = {
'low': {'width': 640, 'height': 480},
'medium': {'width': 848, 'height': 640},
'high': {'width': 1024, 'height': 768},
'high-widescreen': {'width': 1280, 'height': 720},
}
QUALITIES_PREFERENCE = ('low', 'medium', 'high', 'high-widescreen',)
quality_key = qualities(QUALITIES_PREFERENCE)
AllowedQuality = collections.namedtuple('AllowedQuality', ['ext', 'qualities'])
ALLOWED_QUALITIES = (
AllowedQuality('webm', ['high', ]),
AllowedQuality('mp4', ['low', 'medium', 'high', ]),
)
# Some courses also offer widescreen resolution for high quality (see
# https://github.com/ytdl-org/youtube-dl/issues/7766)
widescreen = course.get('supportsWideScreenVideoFormats') is True
best_quality = 'high-widescreen' if widescreen else 'high'
if widescreen:
for allowed_quality in ALLOWED_QUALITIES:
allowed_quality.qualities.append(best_quality)
# 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 formats listing was explicitly 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('-', 1)
if len(req_format_split) > 1:
req_ext, req_quality = req_format_split
req_quality = '-'.join(req_quality.split('-')[:2])
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, (best_quality, )), )
allowed_qualities = guess_allowed_qualities()
formats = []
for ext, qualities_ in allowed_qualities:
for quality in qualities_:
f = QUALITIES[quality].copy()
clip_post = {
'author': author,
'includeCaptions': 'false',
'clipIndex': int(clip_idx),
'courseName': course_name,
'locale': 'en',
'moduleName': name,
'mediaType': ext,
'quality': '%dx%d' % (f['width'], f['height']),
}
format_id = '%s-%s' % (ext, quality)
try:
viewclip = self._download_json(
self._GRAPHQL_EP, display_id,
'Downloading %s viewclip graphql' % format_id,
data=json.dumps({
'query': self.GRAPHQL_VIEWCLIP_TMPL % clip_post,
'variables': {}
}).encode('utf-8'),
headers=self._GRAPHQL_HEADERS)['data']['viewClip']
except ExtractorError:
# Still works but most likely will go soon
viewclip = self._download_json(
'%s/video/clips/viewclip' % self._API_BASE, display_id,
'Downloading %s viewclip JSON' % format_id, fatal=False,
data=json.dumps(clip_post).encode('utf-8'),
headers={'Content-Type': 'application/json;charset=utf-8'})
# Pluralsight tracks multiple sequential calls to ViewClip API and start
# to return 429 HTTP errors after some time (see
# https://github.com/ytdl-org/youtube-dl/pull/6989). Moreover it may even lead
# to account ban (see https://github.com/ytdl-org/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 viewclip:
continue
clip_urls = viewclip.get('urls')
if not isinstance(clip_urls, list):
continue
for clip_url_data in clip_urls:
clip_url = clip_url_data.get('url')
if not clip_url:
continue
cdn = clip_url_data.get('cdn')
clip_f = f.copy()
clip_f.update({
'url': clip_url,
'ext': ext,
'format_id': '%s-%s' % (format_id, cdn) if cdn else format_id,
'quality': quality_key(quality),
'source_preference': int_or_none(clip_url_data.get('rank')),
})
formats.append(clip_f)
self._sort_formats(formats)
duration = int_or_none(
clip.get('duration')) or parse_duration(clip.get('formattedDuration'))
# TODO: other languages?
subtitles = self.extract_subtitles(
author, clip_idx, clip.get('clipId'), 'en', name, duration, display_id)
return {
'id': clip_id,
'title': title,
'duration': duration,
'creator': author,
'formats': formats,
'subtitles': subtitles,
}
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_course(course_id, url, course_id)
title = course['title']
course_name = course['name']
course_data = course['modules']
description = course.get('description') or course.get('shortDescription')
entries = []
for num, module in enumerate(course_data, 1):
author = module.get('author')
module_name = module.get('name')
if not author or not module_name:
continue
for clip in module.get('clips', []):
clip_index = int_or_none(clip.get('index'))
if clip_index is None:
continue
clip_url = update_url_query(
'%s/player' % self._API_BASE, query={
'mode': 'live',
'course': course_name,
'author': author,
'name': module_name,
'clip': clip_index,
})
entries.append({
'_type': 'url_transparent',
'url': clip_url,
'ie_key': PluralsightIE.ie_key(),
'chapter': module.get('title'),
'chapter_number': num,
'chapter_id': module.get('moduleRef'),
})
return self.playlist_result(entries, course_id, title, description)