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from __future__ import unicode_literals
import re
from .common import InfoExtractor
from ..compat import (
compat_HTTPError,
compat_str,
compat_urlparse,
)
from ..utils import (
ExtractorError,
int_or_none,
urlencode_postdata,
)
class LyndaBaseIE(InfoExtractor):
_SIGNIN_URL = 'https://www.lynda.com/signin'
_PASSWORD_URL = 'https://www.lynda.com/signin/password'
_USER_URL = 'https://www.lynda.com/signin/user'
_ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
_NETRC_MACHINE = 'lynda'
def _real_initialize(self):
self._login()
@staticmethod
def _check_error(json_string, key_or_keys):
keys = [key_or_keys] if isinstance(key_or_keys, compat_str) else key_or_keys
for key in keys:
error = json_string.get(key)
if error:
raise ExtractorError('Unable to login: %s' % error, expected=True)
def _login_step(self, form_html, fallback_action_url, extra_form_data, note, referrer_url):
action_url = self._search_regex(
r'<form[^>]+action=(["\'])(?P<url>.+?)\1', form_html,
'post url', default=fallback_action_url, group='url')
if not action_url.startswith('http'):
action_url = compat_urlparse.urljoin(self._SIGNIN_URL, action_url)
form_data = self._hidden_inputs(form_html)
form_data.update(extra_form_data)
try:
response = self._download_json(
action_url, None, note,
data=urlencode_postdata(form_data),
headers={
'Referer': referrer_url,
'X-Requested-With': 'XMLHttpRequest',
})
except ExtractorError as e:
if isinstance(e.cause, compat_HTTPError) and e.cause.code == 500:
response = self._parse_json(e.cause.read().decode('utf-8'), None)
self._check_error(response, ('email', 'password'))
raise
self._check_error(response, 'ErrorMessage')
return response, action_url
def _login(self):
username, password = self._get_login_info()
if username is None:
return
# Step 1: download signin page
signin_page = self._download_webpage(
self._SIGNIN_URL, None, 'Downloading signin page')
# Step 2: submit email
signin_form = self._search_regex(
r'(?s)(<form[^>]+data-form-name=["\']signin["\'][^>]*>.+?</form>)',
signin_page, 'signin form')
signin_page, signin_url = self._login_step(
signin_form, self._PASSWORD_URL, {'email': username},
'Submitting email', self._SIGNIN_URL)
# Step 3: submit password
password_form = signin_page['body']
self._login_step(
password_form, self._USER_URL, {'email': username, 'password': password},
'Submitting password', signin_url)
def _logout(self):
username, _ = self._get_login_info()
if username is None:
return
self._download_webpage(
'http://www.lynda.com/ajax/logout.aspx', None,
'Logging out', 'Unable to log out', fatal=False)
class LyndaIE(LyndaBaseIE):
IE_NAME = 'lynda'
IE_DESC = 'lynda.com videos'
_VALID_URL = r'https?://www\.lynda\.com/(?:[^/]+/[^/]+/\d+|player/embed)/(?P<id>\d+)'
_NETRC_MACHINE = 'lynda'
_TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
_TESTS = [{
'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
}
}, {
'url': 'https://www.lynda.com/player/embed/133770?tr=foo=1;bar=g;fizz=rt&fs=0',
'only_matching': True,
}]
def _real_extract(self, url):
video_id = self._match_id(url)
video = self._download_json(
'http://www.lynda.com/ajax/player?videoId=%s&type=video' % video_id,
video_id, 'Downloading video JSON')
if 'Status' in video:
raise ExtractorError(
'lynda returned error: %s' % video['Message'], expected=True)
if video.get('HasAccess') is False:
self.raise_login_required('Video %s is only available for members' % video_id)
video_id = compat_str(video.get('ID') or video_id)
duration = int_or_none(video.get('DurationInSeconds'))
title = video['Title']
formats = []
fmts = video.get('Formats')
if fmts:
formats.extend([{
'url': f['Url'],
'ext': f.get('Extension'),
'width': int_or_none(f.get('Width')),
'height': int_or_none(f.get('Height')),
'filesize': int_or_none(f.get('FileSize')),
'format_id': compat_str(f.get('Resolution')) if f.get('Resolution') else None,
} for f in fmts if f.get('Url')])
prioritized_streams = video.get('PrioritizedStreams')
if prioritized_streams:
for prioritized_stream_id, prioritized_stream in prioritized_streams.items():
formats.extend([{
'url': video_url,
'width': int_or_none(format_id),
'format_id': '%s-%s' % (prioritized_stream_id, format_id),
} for format_id, video_url in prioritized_stream.items()])
self._check_formats(formats, video_id)
self._sort_formats(formats)
subtitles = self.extract_subtitles(video_id)
return {
'id': video_id,
'title': title,
'duration': duration,
'subtitles': subtitles,
'formats': formats
}
def _fix_subtitles(self, subs):
srt = ''
seq_counter = 0
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'].strip()
if text:
seq_counter += 1
srt += '%s\r\n%s --> %s\r\n%s\r\n\r\n' % (seq_counter, appear_time, disappear_time, text)
if srt:
return srt
def _get_subtitles(self, video_id):
url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id
subs = self._download_json(url, None, False)
if subs:
return {'en': [{'ext': 'srt', 'data': self._fix_subtitles(subs)}]}
else:
return {}
class LyndaCourseIE(LyndaBaseIE):
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')
course = self._download_json(
'http://www.lynda.com/ajax/player?courseId=%s&type=course' % course_id,
course_id, 'Downloading course JSON')
self._logout()
if course.get('Status') == 'NotFound':
raise ExtractorError(
'Course %s does not exist' % course_id, expected=True)
unaccessible_videos = 0
entries = []
# 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['Chapters']:
for video in chapter.get('Videos', []):
if video.get('HasAccess') is False:
unaccessible_videos += 1
continue
video_id = video.get('ID')
if video_id:
entries.append({
'_type': 'url_transparent',
'url': 'http://www.lynda.com/%s/%s-4.html' % (course_path, video_id),
'ie_key': LyndaIE.ie_key(),
'chapter': chapter.get('Title'),
'chapter_number': int_or_none(chapter.get('ChapterIndex')),
'chapter_id': compat_str(chapter.get('ID')),
})
if unaccessible_videos > 0:
self._downloader.report_warning(
'%s videos are only available for members (or paid members) and will not be downloaded. '
% unaccessible_videos + self._ACCOUNT_CREDENTIALS_HINT)
course_title = course.get('Title')
return self.playlist_result(entries, course_id, course_title)
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