[udemy] Allow authentication via cookies

[youtube-dl] / youtube_dl / extractor / udemy.py

diff --git a/youtube_dl/extractor/udemy.py b/youtube_dl/extractor/udemy.py
index e2bab52fef3451596ec1cf0de19e3131e378b5dd..e743c0262c90aa351e94ded3754f938b64b87175 100644 (file)
--- a/youtube_dl/extractor/udemy.py
+++ b/youtube_dl/extractor/udemy.py
@@ -9,6 +9,8 @@ from ..compat import (
 )
 from ..utils import (
     ExtractorError,
+    int_or_none,
+    sanitized_Request,
 )
 
 
@@ -58,7 +60,7 @@ class UdemyIE(InfoExtractor):
             for header, value in headers.items():
                 url_or_request.add_header(header, value)
         else:
-            url_or_request = compat_urllib_request.Request(url_or_request, headers=headers)
+            url_or_request = sanitized_Request(url_or_request, headers=headers)
 
         response = super(UdemyIE, self)._download_json(url_or_request, video_id, note)
         self._handle_error(response)
@@ -70,14 +72,16 @@ class UdemyIE(InfoExtractor):
     def _login(self):
         (username, password) = self._get_login_info()
         if username is None:
-            raise ExtractorError(
-                'Udemy account is required, use --username and --password options to provide account credentials.',
-                expected=True)
+            return
 
         login_popup = self._download_webpage(
             self._LOGIN_URL, None, 'Downloading login popup')
 
-        if login_popup == '<div class="run-command close-popup redirect" data-url="https://www.udemy.com/"></div>':
+        def is_logged(webpage):
+            return any(p in webpage for p in ['href="https://www.udemy.com/user/logout/', '>Logout<'])
+
+        # already logged in
+        if is_logged(login_popup):
             return
 
         login_form = self._form_hidden_inputs('login-form', login_popup)
@@ -87,7 +91,7 @@ class UdemyIE(InfoExtractor):
             'password': password.encode('utf-8'),
         })
 
-        request = compat_urllib_request.Request(
+        request = sanitized_Request(
             self._LOGIN_URL, compat_urllib_parse.urlencode(login_form).encode('utf-8'))
         request.add_header('Referer', self._ORIGIN_URL)
         request.add_header('Origin', self._ORIGIN_URL)
@@ -95,8 +99,7 @@ class UdemyIE(InfoExtractor):
         response = self._download_webpage(
             request, None, 'Logging in as %s' % username)
 
-        if all(logout_pattern not in response
-               for logout_pattern in ['href="https://www.udemy.com/user/logout/', '>Logout<']):
+        if not is_logged(response):
             error = self._html_search_regex(
                 r'(?s)<div[^>]+class="form-errors[^"]*">(.+?)</div>',
                 response, 'error message', default=None)
@@ -125,26 +128,47 @@ class UdemyIE(InfoExtractor):
 
         video_id = asset['id']
         thumbnail = asset.get('thumbnailUrl') or asset.get('thumbnail_url')
-        duration = asset['data']['duration']
+        duration = int_or_none(asset.get('data', {}).get('duration'))
 
         download_url = asset.get('downloadUrl') or asset.get('download_url')
 
         video = download_url.get('Video') or download_url.get('video')
         video_480p = download_url.get('Video480p') or download_url.get('video_480p')
 
-        formats = [
-            {
-                'url': video_480p[0],
-                'format_id': '360p',
-            },
-            {
-                'url': video[0],
-                'format_id': '720p',
-            },
-        ]
+        formats = [{
+            'url': video_480p[0],
+            'format_id': 'download-360p',
+        }, {
+            'url': video[0],
+            'format_id': 'download-720p',
+        }]
+
+        # Some videos also contain formats in asset['data']['outputs'] (e.g.
+        # https://www.udemy.com/ios9-swift/learn/#/lecture/3383208)
+        outputs = asset.get('data', {}).get('outputs')
+        if isinstance(outputs, dict):
+            for format_id, f in outputs.items():
+                video_url = f.get('url')
+                if video_url:
+                    formats.append({
+                        'url': video_url,
+                        'format_id': '%sp' % (f.get('labe1l') or format_id),
+                        'width': int_or_none(f.get('width')),
+                        'height': int_or_none(f.get('height')),
+                        'vbr': int_or_none(f.get('video_bitrate_in_kbps')),
+                        'vcodec': f.get('video_codec'),
+                        'fps': int_or_none(f.get('frame_rate')),
+                        'abr': int_or_none(f.get('audio_bitrate_in_kbps')),
+                        'acodec': f.get('audio_codec'),
+                        'asr': int_or_none(f.get('audio_sample_rate')),
+                        'tbr': int_or_none(f.get('total_bitrate_in_kbps')),
+                        'filesize': int_or_none(f.get('file_size_in_bytes')),
+                    })
+
+        self._sort_formats(formats)
 
         title = lecture['title']
-        description = lecture['description']
+        description = lecture.get('description')
 
         return {
             'id': video_id,