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250 lines
9 KiB
Python
250 lines
9 KiB
Python
from __future__ import unicode_literals
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import re
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import json
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from .common import InfoExtractor
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from ..compat import compat_str
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from ..utils import (
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ExtractorError,
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clean_html,
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int_or_none,
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sanitized_Request,
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urlencode_postdata,
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)
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class LyndaBaseIE(InfoExtractor):
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_LOGIN_URL = 'https://www.lynda.com/login/login.aspx'
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_ACCOUNT_CREDENTIALS_HINT = 'Use --username and --password options to provide lynda.com account credentials.'
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_NETRC_MACHINE = 'lynda'
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def _real_initialize(self):
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self._login()
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def _login(self):
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username, password = self._get_login_info()
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if username is None:
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return
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login_form = {
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'username': username.encode('utf-8'),
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'password': password.encode('utf-8'),
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'remember': 'false',
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'stayPut': 'false'
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}
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request = sanitized_Request(
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self._LOGIN_URL, urlencode_postdata(login_form))
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login_page = self._download_webpage(
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request, None, 'Logging in as %s' % username)
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# Not (yet) logged in
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m = re.search(r'loginResultJson\s*=\s*\'(?P<json>[^\']+)\';', login_page)
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if m is not None:
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response = m.group('json')
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response_json = json.loads(response)
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state = response_json['state']
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if state == 'notlogged':
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raise ExtractorError(
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'Unable to login, incorrect username and/or password',
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expected=True)
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# This is when we get popup:
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# > You're already logged in to lynda.com on two devices.
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# > If you log in here, we'll log you out of another device.
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# So, we need to confirm this.
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if state == 'conflicted':
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confirm_form = {
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'username': '',
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'password': '',
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'resolve': 'true',
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'remember': 'false',
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'stayPut': 'false',
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}
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request = sanitized_Request(
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self._LOGIN_URL, urlencode_postdata(confirm_form))
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login_page = self._download_webpage(
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request, None,
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'Confirming log in and log out from another device')
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if all(not re.search(p, login_page) for p in ('isLoggedIn\s*:\s*true', r'logout\.aspx', r'>Log out<')):
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if 'login error' in login_page:
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mobj = re.search(
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r'(?s)<h1[^>]+class="topmost">(?P<title>[^<]+)</h1>\s*<div>(?P<description>.+?)</div>',
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login_page)
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if mobj:
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raise ExtractorError(
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'lynda returned error: %s - %s'
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% (mobj.group('title'), clean_html(mobj.group('description'))),
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expected=True)
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raise ExtractorError('Unable to log in')
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def _logout(self):
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username, _ = self._get_login_info()
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if username is None:
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return
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self._download_webpage(
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'http://www.lynda.com/ajax/logout.aspx', None,
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'Logging out', 'Unable to log out', fatal=False)
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class LyndaIE(LyndaBaseIE):
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IE_NAME = 'lynda'
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IE_DESC = 'lynda.com videos'
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_VALID_URL = r'https?://www\.lynda\.com/(?:[^/]+/[^/]+/\d+|player/embed)/(?P<id>\d+)'
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_NETRC_MACHINE = 'lynda'
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_TIMECODE_REGEX = r'\[(?P<timecode>\d+:\d+:\d+[\.,]\d+)\]'
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_TESTS = [{
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'url': 'http://www.lynda.com/Bootstrap-tutorials/Using-exercise-files/110885/114408-4.html',
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'md5': 'ecfc6862da89489161fb9cd5f5a6fac1',
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'info_dict': {
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'id': '114408',
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'ext': 'mp4',
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'title': 'Using the exercise files',
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'duration': 68
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}
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}, {
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'url': 'https://www.lynda.com/player/embed/133770?tr=foo=1;bar=g;fizz=rt&fs=0',
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'only_matching': True,
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}]
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def _real_extract(self, url):
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video_id = self._match_id(url)
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video = self._download_json(
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'http://www.lynda.com/ajax/player?videoId=%s&type=video' % video_id,
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video_id, 'Downloading video JSON')
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if 'Status' in video:
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raise ExtractorError(
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'lynda returned error: %s' % video['Message'], expected=True)
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if video.get('HasAccess') is False:
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self.raise_login_required('Video %s is only available for members' % video_id)
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video_id = compat_str(video.get('ID') or video_id)
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duration = int_or_none(video.get('DurationInSeconds'))
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title = video['Title']
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formats = []
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fmts = video.get('Formats')
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if fmts:
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formats.extend([{
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'url': f['Url'],
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'ext': f.get('Extension'),
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'width': int_or_none(f.get('Width')),
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'height': int_or_none(f.get('Height')),
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'filesize': int_or_none(f.get('FileSize')),
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'format_id': compat_str(f.get('Resolution')) if f.get('Resolution') else None,
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} for f in fmts if f.get('Url')])
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prioritized_streams = video.get('PrioritizedStreams')
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if prioritized_streams:
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for prioritized_stream_id, prioritized_stream in prioritized_streams.items():
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formats.extend([{
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'url': video_url,
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'width': int_or_none(format_id),
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'format_id': '%s-%s' % (prioritized_stream_id, format_id),
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} for format_id, video_url in prioritized_stream.items()])
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self._check_formats(formats, video_id)
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self._sort_formats(formats)
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subtitles = self.extract_subtitles(video_id)
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return {
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'id': video_id,
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'title': title,
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'duration': duration,
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'subtitles': subtitles,
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'formats': formats
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}
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def _fix_subtitles(self, subs):
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srt = ''
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seq_counter = 0
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for pos in range(0, len(subs) - 1):
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seq_current = subs[pos]
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m_current = re.match(self._TIMECODE_REGEX, seq_current['Timecode'])
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if m_current is None:
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continue
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seq_next = subs[pos + 1]
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m_next = re.match(self._TIMECODE_REGEX, seq_next['Timecode'])
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if m_next is None:
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continue
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appear_time = m_current.group('timecode')
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disappear_time = m_next.group('timecode')
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text = seq_current['Caption'].strip()
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if text:
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seq_counter += 1
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srt += '%s\r\n%s --> %s\r\n%s\r\n\r\n' % (seq_counter, appear_time, disappear_time, text)
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if srt:
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return srt
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def _get_subtitles(self, video_id):
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url = 'http://www.lynda.com/ajax/player?videoId=%s&type=transcript' % video_id
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subs = self._download_json(url, None, False)
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if subs:
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return {'en': [{'ext': 'srt', 'data': self._fix_subtitles(subs)}]}
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else:
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return {}
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class LyndaCourseIE(LyndaBaseIE):
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IE_NAME = 'lynda:course'
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IE_DESC = 'lynda.com online courses'
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# Course link equals to welcome/introduction video link of same course
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# We will recognize it as course link
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_VALID_URL = r'https?://(?:www|m)\.lynda\.com/(?P<coursepath>[^/]+/[^/]+/(?P<courseid>\d+))-\d\.html'
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def _real_extract(self, url):
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mobj = re.match(self._VALID_URL, url)
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course_path = mobj.group('coursepath')
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course_id = mobj.group('courseid')
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course = self._download_json(
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'http://www.lynda.com/ajax/player?courseId=%s&type=course' % course_id,
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course_id, 'Downloading course JSON')
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self._logout()
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if course.get('Status') == 'NotFound':
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raise ExtractorError(
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'Course %s does not exist' % course_id, expected=True)
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unaccessible_videos = 0
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entries = []
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# Might want to extract videos right here from video['Formats'] as it seems 'Formats' is not provided
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# by single video API anymore
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for chapter in course['Chapters']:
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for video in chapter.get('Videos', []):
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if video.get('HasAccess') is False:
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unaccessible_videos += 1
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continue
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video_id = video.get('ID')
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if video_id:
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entries.append({
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'_type': 'url_transparent',
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'url': 'http://www.lynda.com/%s/%s-4.html' % (course_path, video_id),
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'ie_key': LyndaIE.ie_key(),
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'chapter': chapter.get('Title'),
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'chapter_number': int_or_none(chapter.get('ChapterIndex')),
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'chapter_id': compat_str(chapter.get('ID')),
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})
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if unaccessible_videos > 0:
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self._downloader.report_warning(
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'%s videos are only available for members (or paid members) and will not be downloaded. '
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% unaccessible_videos + self._ACCOUNT_CREDENTIALS_HINT)
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course_title = course.get('Title')
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return self.playlist_result(entries, course_id, course_title)
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