[unige] Add new extractor

This enables to extract videos posted to the University of Geneva mediaserver,
located at https://mediaserver.unige.ch. It supports:
- Single courses/videos
- Whole course "playlists" (accessible by clicking on the course's
  title)

Signed-off-by: Frank Villaro-Dixon <frank@villaro-dixon.eu>

youtube_dl/extractor/extractors.py

@@ -1427,6 +1427,10 @@ from .ufctv import (
     UFCTVIE,
     UFCArabiaIE,
 )
+from .unige import (
+    UnigeIE,
+    UnigePlaylistIE,
+)
 from .uktvplay import UKTVPlayIE
 from .digiteka import DigitekaIE
 from .dlive import (

youtube_dl/extractor/unige.py

@@ -0,0 +1,99 @@
+# coding: utf-8
+from __future__ import unicode_literals
+
+from .common import InfoExtractor
+from ..utils import (
+    ExtractorError,
+    urlencode_postdata,
+)
+
+from youtube_dl.compat import (
+    compat_HTTPError,
+)
+
+
+class UnigeIE(InfoExtractor):
+    _VALID_URL = r'https://mediaserver.unige.ch/play/(?P<id>\d+)'
+    _TESTS = [{
+        'url': 'https://mediaserver.unige.ch/play/196613',
+        'md5': 'xxxx',
+        'info_dict': {
+            'id': '196613',
+            'display_id': '196613',
+            'ext': 'mp4',
+        },
+    }, {
+        'url': 'https://mediaserver.unige.ch/proxy/196613/VN3-2569-2023-2024-09-19.mp4',
+        'only_matching': True,
+    }]
+
+    def _login(self, video_id):
+        # Login credentials are per video group
+
+        username, password = self._get_login_info(netrc_machine=f'unige-mediaserver-{video_id}')
+        if not username or not password:
+            self.raise_login_required('You need a username/pwd to access this video')
+
+        try:
+            secure_wp = f'https://mediaserver.unige.ch/proxy/{video_id}/secure.php?view=play&id={video_id}'
+            self._download_webpage(
+                secure_wp, None, 'Logging in',
+                data=urlencode_postdata({
+                    'httpd_username': username,
+                    'httpd_password': password,
+                }), headers={
+                    'Referer': secure_wp,
+                    'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
+                })
+        except ExtractorError as e:
+            if isinstance(e.cause, compat_HTTPError) and e.cause.code == 400:
+                raise ExtractorError(
+                    'Unable to login: incorrect username and/or password',
+                    expected=True)
+            raise
+
+    def _real_extract(self, url):
+        video_id = self._match_id(url)
+        webpage = self._download_webpage(url, video_id)
+
+        try:
+            # This dumb download only checks if we need to login, as authentication
+            # is unique (and sometimes optional) for each video
+            secure_wp = f'https://mediaserver.unige.ch/proxy/{video_id}/secure.php?view=play&id={video_id}'
+            self._download_webpage(secure_wp, f'secure_{video_id}')
+        except ExtractorError as e:
+            if isinstance(e.cause, compat_HTTPError) and e.cause.code == 401:
+                self._login(video_id)
+            else:
+                # The video doesn't require login
+                pass
+
+        video_title = self._html_search_regex(r'<h1>(.+?)</h1>', webpage.replace('\n', ''), 'unige')
+        course_title = self._html_search_regex(r'<a href="/collection/[-\w+]+">(?P<course>.*)</a></div>', webpage, 'unige')
+        course_id = self._html_search_regex(r'<a href="/collection/(?P<courseid>[-\w+]+)">', webpage, 'unige')
+
+        video_url = self._search_regex(
+            r'<source src="([^"]+)"', webpage, 'video URL')
+
+        return {
+            'id': video_id,
+            'title': video_title,
+            'url': video_url,
+            'channel': course_title,
+            'channel_id': course_id,
+        }
+
+
+class UnigePlaylistIE(InfoExtractor):
+    _VALID_URL = r'https://mediaserver.unige.ch/collection/(?P<id>[-\w+]+)'
+
+    def _real_extract(self, url):
+        collection_id = self._match_id(url)
+
+        rss = self._download_xml(url + '.rss', collection_id)
+
+        entries = [self.url_result(video.text, 'Unige')
+                   for video in rss.findall('./channel/item/link')]
+        title_text = rss.find('./channel/title').text
+
+        return self.playlist_result(entries, collection_id, title_text)