1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
|
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)
|
