1 files changed, 90 insertions, 0 deletions
diff --git a/yt_dlp/extractor/dropbox.py b/yt_dlp/extractor/dropbox.py
new file mode 100644
index 0000000..bc2efce
--- /dev/null
+++ b/yt_dlp/extractor/dropbox.py
@@ -0,0 +1,90 @@
+import base64
+import os.path
+import re
+
+from .common import InfoExtractor
+from ..compat import compat_urllib_parse_unquote
+from ..utils import (
+    ExtractorError,
+    update_url_query,
+    url_basename,
+)
+
+
+class DropboxIE(InfoExtractor):
+    _VALID_URL = r'https?://(?:www\.)?dropbox\.com/(?:(?:e/)?scl/fi|sh?)/(?P<id>\w+)'
+    _TESTS = [
+        {
+            'url': 'https://www.dropbox.com/s/nelirfsxnmcfbfh/youtube-dl%20test%20video%20%27%C3%A4%22BaW_jenozKc.mp4?dl=0',
+            'info_dict': {
+                'id': 'nelirfsxnmcfbfh',
+                'ext': 'mp4',
+                'title': 'youtube-dl test video \'ä"BaW_jenozKc'
+            }
+        }, {
+            'url': 'https://www.dropbox.com/s/nelirfsxnmcfbfh',
+            'only_matching': True,
+        }, {
+            'url': 'https://www.dropbox.com/sh/2mgpiuq7kv8nqdf/AABy-fW4dkydT4GmWi2mdOUDa?dl=0&preview=Drone+Shot.mp4',
+            'only_matching': True,
+        }, {
+            'url': 'https://www.dropbox.com/scl/fi/r2kd2skcy5ylbbta5y1pz/DJI_0003.MP4?dl=0&rlkey=wcdgqangn7t3lnmmv6li9mu9h',
+            'only_matching': True,
+        }, {
+            'url': 'https://www.dropbox.com/e/scl/fi/r2kd2skcy5ylbbta5y1pz/DJI_0003.MP4?dl=0&rlkey=wcdgqangn7t3lnmmv6li9mu9h',
+            'only_matching': True,
+        },
+    ]
+
+    def _real_extract(self, url):
+        mobj = self._match_valid_url(url)
+        video_id = mobj.group('id')
+        webpage = self._download_webpage(url, video_id)
+        fn = compat_urllib_parse_unquote(url_basename(url))
+        title = os.path.splitext(fn)[0]
+
+        password = self.get_param('videopassword')
+        if (self._og_search_title(webpage) == 'Dropbox - Password Required'
+                or 'Enter the password for this link' in webpage):
+
+            if password:
+                content_id = self._search_regex(r'content_id=(.*?)["\']', webpage, 'content_id')
+                payload = f'is_xhr=true&t={self._get_cookies("https://www.dropbox.com").get("t").value}&content_id={content_id}&password={password}&url={url}'
+                response = self._download_json(
+                    'https://www.dropbox.com/sm/auth', video_id, 'POSTing video password', data=payload.encode('UTF-8'),
+                    headers={'content-type': 'application/x-www-form-urlencoded; charset=UTF-8'})
+
+                if response.get('status') != 'authed':
+                    raise ExtractorError('Authentication failed!', expected=True)
+                webpage = self._download_webpage(url, video_id)
+            elif self._get_cookies('https://dropbox.com').get('sm_auth'):
+                webpage = self._download_webpage(url, video_id)
+            else:
+                raise ExtractorError('Password protected video, use --video-password <password>', expected=True)
+
+        formats, subtitles, has_anonymous_download = [], {}, False
+        for encoded in reversed(re.findall(r'registerStreamedPrefetch\s*\(\s*"[\w/+=]+"\s*,\s*"([\w/+=]+)"', webpage)):
+            decoded = base64.b64decode(encoded).decode('utf-8', 'ignore')
+            transcode_url = self._search_regex(
+                r'\n.(https://[^\x03\x08\x12\n]+\.m3u8)', decoded, 'transcode url', default=None)
+            if not transcode_url:
+                continue
+            formats, subtitles = self._extract_m3u8_formats_and_subtitles(transcode_url, video_id, 'mp4')
+            has_anonymous_download = self._search_regex(r'(anonymous:\tanonymous)', decoded, 'anonymous', default=False)
+            break
+
+        # downloads enabled we can get the original file
+        if has_anonymous_download:
+            formats.append({
+                'url': update_url_query(url, {'dl': '1'}),
+                'format_id': 'original',
+                'format_note': 'Original',
+                'quality': 1
+            })
+
+        return {
+            'id': video_id,
+            'title': title,
+            'formats': formats,
+            'subtitles': subtitles
+        }