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from __future__ import unicode_literals
import re
import json
from .subtitles import SubtitlesInfoExtractor
from .common import InfoExtractor
from ..compat import (
compat_str,
compat_urllib_parse,
compat_urllib_request,
)
from ..utils import (
ExtractorError,
int_or_none,
)
class LyndaIE(SubtitlesInfoExtractor):
IE_NAME = 'lynda'
IE_DESC = 'lynda.com videos'
_VALID_URL = r'https?://www\.lynda\.com/[^/]+/[^/]+/\d+/(\d+)-\d\.html'
_LOGIN_URL = 'https://www.lynda.com/login/login.aspx'
_NETRC_MACHINE = 'lynda'
_SUCCESSFUL_LOGIN_REGEX = r'isLoggedIn: true'
_TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
_TEST = {
'url': 'http://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html',
'md5': 'ecfc6862da89489161fb9cd5f5a6fac1',
'info_dict': {
'id': '114408',
'ext': 'mp4',
'title': 'Using the exercise files',
'duration': 68
}
}
def _real_initialize(self):
self._login()
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
video_id = mobj.group(1)
page = self._download_webpage('http://www.lynda.com/ajax/player?videoId=%s&type=video' % video_id, video_id,
'Downloading video JSON')
video_json = json.loads(page)
if 'Status' in video_json:
raise ExtractorError('lynda returned error: %s' % video_json['Message'], expected=True)
if video_json['HasAccess'] is False:
raise ExtractorError(
'Video %s is only available for members. ' % video_id + self.ACCOUNT_CREDENTIALS_HINT, expected=True)
video_id = compat_str(video_json['ID'])
duration = video_json['DurationInSeconds']
title = video_json['Title']
formats = []
fmts = video_json.get('Formats')
if fmts:
formats.extend([
{
'url': fmt['Url'],
'ext': fmt['Extension'],
'width': fmt['Width'],
'height': fmt['Height'],
'filesize': fmt['FileSize'],
'format_id': str(fmt['Resolution'])
} for fmt in fmts])
prioritized_streams = video_json.get('PrioritizedStreams')
if prioritized_streams:
formats.extend([
{
'url': video_url,
'width': int_or_none(format_id),
'format_id': format_id,
} for format_id, video_url in prioritized_streams['0'].items()
])
self._check_formats(formats, video_id)
self._sort_formats(formats)
if self._downloader.params.get('listsubtitles', False):
self._list_available_subtitles(video_id, page)
return
subtitles = self._fix_subtitles(self.extract_subtitles(video_id, page))
return {
'id': video_id,
'title': title,
'duration': duration,
'subtitles': subtitles,
'formats': formats
}
def _login(self):
(username, password) = self._get_login_info()
if username is None:
return
login_form = {
'username': username,
'password': password,
'remember': 'false',
'stayPut': 'false'
}
request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(login_form))
login_page = self._download_webpage(request, None, 'Logging in as %s' % username)
# Not (yet) logged in
m = re.search(r'loginResultJson = \'(?P<json>[^\']+)\';', login_page)
if m is not None:
response = m.group('json')
response_json = json.loads(response)
state = response_json['state']
if state == 'notlogged':
raise ExtractorError('Unable to login, incorrect username and/or password', expected=True)
# This is when we get popup:
# > You're already logged in to lynda.com on two devices.
# > If you log in here, we'll log you out of another device.
# So, we need to confirm this.
if state == 'conflicted':
confirm_form = {
'username': '',
'password': '',
'resolve': 'true',
'remember': 'false',
'stayPut': 'false',
}
request = compat_urllib_request.Request(self._LOGIN_URL, compat_urllib_parse.urlencode(confirm_form))
login_page = self._download_webpage(request, None, 'Confirming log in and log out from another device')
if re.search(self._SUCCESSFUL_LOGIN_REGEX, login_page) is None:
raise ExtractorError('Unable to log in')
def _fix_subtitles(self, subtitles):
if subtitles is None:
return subtitles # subtitles not requested
fixed_subtitles = {}
for k, v in subtitles.items():
subs = json.loads(v)
if len(subs) == 0:
continue
srt = ''
for pos in range(0, len(subs) - 1):
seq_current = subs[pos]
m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode'])
if m_current is None:
continue
seq_next = subs[pos + 1]
m_next = re.match(self._TIMECODE_REGEX, seq_next['Timecode'])
if m_next is None:
continue
appear_time = m_current.group('timecode')
disappear_time = m_next.group('timecode')
text = seq_current['Caption']
srt += '%s\r\n%s --> %s\r\n%s' % (str(pos), appear_time, disappear_time, text)
if srt:
fixed_subtitles[k] = srt
return fixed_subtitles
def _get_available_subtitles(self, video_id, webpage):
url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id
sub = self._download_webpage(url, None, False)
sub_json = json.loads(sub)
return {'en': url} if len(sub_json) > 0 else {}
class LyndaCourseIE(InfoExtractor):
IE_NAME = 'lynda:course'
IE_DESC = 'lynda.com online courses'
# Course link equals to welcome/introduction video link of same course
# We will recognize it as course link
_VALID_URL = r'https?://(?:www|m)\.lynda\.com/(?P<coursepath>[^/]+/[^/]+/(?P<courseid>\d+))-\d\.html'
def _real_extract(self, url):
mobj = re.match(self._VALID_URL, url)
course_path = mobj.group('coursepath')
course_id = mobj.group('courseid')
page = self._download_webpage('http://www.lynda.com/ajax/player?courseId=%s&type=course' % course_id,
course_id, 'Downloading course JSON')
course_json = json.loads(page)
if 'Status' in course_json and course_json['Status'] == 'NotFound':
raise ExtractorError('Course %s does not exist' % course_id, expected=True)
unaccessible_videos = 0
videos = []
(username, _) = self._get_login_info()
# Might want to extract videos right here from video['Formats'] as it seems 'Formats' is not provided
# by single video API anymore
for chapter in course_json['Chapters']:
for video in chapter['Videos']:
if username is None and video['HasAccess'] is False:
unaccessible_videos += 1
continue
videos.append(video['ID'])
if unaccessible_videos > 0:
self._downloader.report_warning('%s videos are only available for members and will not be downloaded. '
% unaccessible_videos + LyndaIE.ACCOUNT_CREDENTIALS_HINT)
entries = [
self.url_result('http://www.lynda.com/%s/%s-4.html' %
(course_path, video_id),
'Lynda')
for video_id in videos]
course_title = course_json['Title']
return self.playlist_result(entries, course_id, course_title)
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