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249 lines
9.0 KiB
249 lines
9.0 KiB
from __future__ import unicode_literals |
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import re |
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from .common import InfoExtractor |
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from ..compat import ( |
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compat_HTTPError, |
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compat_str, |
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compat_urlparse, |
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) |
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from ..utils import ( |
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ExtractorError, |
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int_or_none, |
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urlencode_postdata, |
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) |
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class LyndaBaseIE(InfoExtractor): |
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_SIGNIN_URL = 'https://www.lynda.com/signin' |
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_PASSWORD_URL = 'https://www.lynda.com/signin/password' |
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_USER_URL = 'https://www.lynda.com/signin/user' |
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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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@staticmethod |
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def _check_error(json_string, key_or_keys): |
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keys = [key_or_keys] if isinstance(key_or_keys, compat_str) else key_or_keys |
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for key in keys: |
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error = json_string.get(key) |
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if error: |
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raise ExtractorError('Unable to login: %s' % error, expected=True) |
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def _login_step(self, form_html, fallback_action_url, extra_form_data, note, referrer_url): |
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action_url = self._search_regex( |
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r'<form[^>]+action=(["\'])(?P<url>.+?)\1', form_html, |
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'post url', default=fallback_action_url, group='url') |
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if not action_url.startswith('http'): |
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action_url = compat_urlparse.urljoin(self._SIGNIN_URL, action_url) |
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form_data = self._hidden_inputs(form_html) |
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form_data.update(extra_form_data) |
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try: |
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response = self._download_json( |
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action_url, None, note, |
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data=urlencode_postdata(form_data), |
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headers={ |
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'Referer': referrer_url, |
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'X-Requested-With': 'XMLHttpRequest', |
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}) |
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except ExtractorError as e: |
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if isinstance(e.cause, compat_HTTPError) and e.cause.code == 500: |
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response = self._parse_json(e.cause.read().decode('utf-8'), None) |
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self._check_error(response, ('email', 'password')) |
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raise |
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self._check_error(response, 'ErrorMessage') |
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return response, action_url |
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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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# Step 1: download signin page |
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signin_page = self._download_webpage( |
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self._SIGNIN_URL, None, 'Downloading signin page') |
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# Already logged in |
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if any(re.search(p, signin_page) for p in ( |
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'isLoggedIn\s*:\s*true', r'logout\.aspx', r'>Log out<')): |
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return |
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# Step 2: submit email |
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signin_form = self._search_regex( |
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r'(?s)(<form[^>]+data-form-name=["\']signin["\'][^>]*>.+?</form>)', |
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signin_page, 'signin form') |
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signin_page, signin_url = self._login_step( |
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signin_form, self._PASSWORD_URL, {'email': username}, |
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'Submitting email', self._SIGNIN_URL) |
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# Step 3: submit password |
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password_form = signin_page['body'] |
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self._login_step( |
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password_form, self._USER_URL, {'email': username, 'password': password}, |
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'Submitting password', signin_url) |
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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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_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 is unstable |
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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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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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course_description = course.get('Description') |
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return self.playlist_result(entries, course_id, course_title, course_description)
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