mirror of
https://github.com/l1ving/youtube-dl
synced 2024-11-23 01:42:57 +08:00
251 lines
9.0 KiB
Python
251 lines
9.0 KiB
Python
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')
|
|
|
|
# Already logged in
|
|
if any(re.search(p, signin_page) for p in (
|
|
'isLoggedIn\s*:\s*true', r'logout\.aspx', r'>Log out<')):
|
|
return
|
|
|
|
# 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)
|
|
|
|
|
|
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')
|
|
|
|
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')
|
|
course_description = course.get('Description')
|
|
|
|
return self.playlist_result(entries, course_id, course_title, course_description)
|