1 files changed, 115 insertions, 0 deletions
diff --git a/yt_dlp/extractor/discovery.py b/yt_dlp/extractor/discovery.py
new file mode 100644
index 0000000..75b4643
--- /dev/null
+++ b/yt_dlp/extractor/discovery.py
@@ -0,0 +1,115 @@
+import random
+import string
+
+from .discoverygo import DiscoveryGoBaseIE
+from ..compat import compat_urllib_parse_unquote
+from ..networking.exceptions import HTTPError
+from ..utils import ExtractorError
+
+
+class DiscoveryIE(DiscoveryGoBaseIE):
+    _VALID_URL = r'''(?x)https?://
+        (?P<site>
+            go\.discovery|
+            www\.
+                (?:
+                    investigationdiscovery|
+                    discoverylife|
+                    animalplanet|
+                    ahctv|
+                    destinationamerica|
+                    sciencechannel|
+                    tlc
+                )|
+            watch\.
+                (?:
+                    hgtv|
+                    foodnetwork|
+                    travelchannel|
+                    diynetwork|
+                    cookingchanneltv|
+                    motortrend
+                )
+        )\.com/tv-shows/(?P<show_slug>[^/]+)/(?:video|full-episode)s/(?P<id>[^./?#]+)'''
+    _TESTS = [{
+        'url': 'https://go.discovery.com/tv-shows/cash-cab/videos/riding-with-matthew-perry',
+        'info_dict': {
+            'id': '5a2f35ce6b66d17a5026e29e',
+            'ext': 'mp4',
+            'title': 'Riding with Matthew Perry',
+            'description': 'md5:a34333153e79bc4526019a5129e7f878',
+            'duration': 84,
+        },
+        'params': {
+            'skip_download': True,  # requires ffmpeg
+        }
+    }, {
+        'url': 'https://www.investigationdiscovery.com/tv-shows/final-vision/full-episodes/final-vision',
+        'only_matching': True,
+    }, {
+        'url': 'https://go.discovery.com/tv-shows/alaskan-bush-people/videos/follow-your-own-road',
+        'only_matching': True,
+    }, {
+        # using `show_slug` is important to get the correct video data
+        'url': 'https://www.sciencechannel.com/tv-shows/mythbusters-on-science/full-episodes/christmas-special',
+        'only_matching': True,
+    }]
+    _GEO_COUNTRIES = ['US']
+    _GEO_BYPASS = False
+    _API_BASE_URL = 'https://api.discovery.com/v1/'
+
+    def _real_extract(self, url):
+        site, show_slug, display_id = self._match_valid_url(url).groups()
+
+        access_token = None
+        cookies = self._get_cookies(url)
+
+        # prefer Affiliate Auth Token over Anonymous Auth Token
+        auth_storage_cookie = cookies.get('eosAf') or cookies.get('eosAn')
+        if auth_storage_cookie and auth_storage_cookie.value:
+            auth_storage = self._parse_json(compat_urllib_parse_unquote(
+                compat_urllib_parse_unquote(auth_storage_cookie.value)),
+                display_id, fatal=False) or {}
+            access_token = auth_storage.get('a') or auth_storage.get('access_token')
+
+        if not access_token:
+            access_token = self._download_json(
+                'https://%s.com/anonymous' % site, display_id,
+                'Downloading token JSON metadata', query={
+                    'authRel': 'authorization',
+                    'client_id': '3020a40c2356a645b4b4',
+                    'nonce': ''.join(random.choices(string.ascii_letters, k=32)),
+                    'redirectUri': 'https://www.discovery.com/',
+                })['access_token']
+
+        headers = self.geo_verification_headers()
+        headers['Authorization'] = 'Bearer ' + access_token
+
+        try:
+            video = self._download_json(
+                self._API_BASE_URL + 'content/videos',
+                display_id, 'Downloading content JSON metadata',
+                headers=headers, query={
+                    'embed': 'show.name',
+                    'fields': 'authenticated,description.detailed,duration,episodeNumber,id,name,parental.rating,season.number,show,tags',
+                    'slug': display_id,
+                    'show_slug': show_slug,
+                })[0]
+            video_id = video['id']
+            stream = self._download_json(
+                self._API_BASE_URL + 'streaming/video/' + video_id,
+                display_id, 'Downloading streaming JSON metadata', headers=headers)
+        except ExtractorError as e:
+            if isinstance(e.cause, HTTPError) and e.cause.status in (401, 403):
+                e_description = self._parse_json(
+                    e.cause.response.read().decode(), display_id)['description']
+                if 'resource not available for country' in e_description:
+                    self.raise_geo_restricted(countries=self._GEO_COUNTRIES)
+                if 'Authorized Networks' in e_description:
+                    raise ExtractorError(
+                        'This video is only available via cable service provider subscription that'
+                        ' is not currently supported. You may want to use --cookies.', expected=True)
+                raise ExtractorError(e_description)
+            raise
+
+        return self._extract_video_info(video, stream, display_id)