[youtube] fix extraction for embed restricted live streams(fixes #16433)

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

diff --git a/youtube_dl/extractor/streamango.py b/youtube_dl/extractor/streamango.py
index a4ef06b6668a63cf03f39c90949f72eddf8fe917..fcaa5ac0b08fa3361267f0ac2fefd7dc52deed0a 100644 (file)
--- a/youtube_dl/extractor/streamango.py
+++ b/youtube_dl/extractor/streamango.py
@@ -1,11 +1,20 @@
 # coding: utf-8
 from __future__ import unicode_literals
 
+import re
+
 from .common import InfoExtractor
+from ..compat import compat_chr
+from ..utils import (
+    determine_ext,
+    ExtractorError,
+    int_or_none,
+    js_to_json,
+)
 
 
 class StreamangoIE(InfoExtractor):
-    _VALID_URL = r'https?://(?:www\.)?streamango\.com/(?:f|embed)/(?P<id>.+?)/(?:.+)'
+    _VALID_URL = r'https?://(?:www\.)?streamango\.com/(?:f|embed)/(?P<id>[^/?#&]+)'
     _TESTS = [{
         'url': 'https://streamango.com/f/clapasobsptpkdfe/20170315_150006_mp4',
         'md5': 'e992787515a182f55e38fc97588d802a',
@@ -13,36 +22,95 @@ class StreamangoIE(InfoExtractor):
             'id': 'clapasobsptpkdfe',
             'ext': 'mp4',
             'title': '20170315_150006.mp4',
-            'url': r're:https://streamango\.com/v/d/clapasobsptpkdfe~[0-9]{10}~(?:[0-9]+\.){3}[0-9]+~.{8}/720',
         }
+    }, {
+        # no og:title
+        'url': 'https://streamango.com/embed/foqebrpftarclpob/asdf_asd_2_mp4',
+        'info_dict': {
+            'id': 'foqebrpftarclpob',
+            'ext': 'mp4',
+            'title': 'foqebrpftarclpob',
+        },
+        'params': {
+            'skip_download': True,
+        },
+        'skip': 'gone',
     }, {
         'url': 'https://streamango.com/embed/clapasobsptpkdfe/20170315_150006_mp4',
         'only_matching': True,
     }]
 
     def _real_extract(self, url):
-        def extract_url(urltype):
-            return self._search_regex(
-                r'type\s*:\s*["\']{}["\']\s*,\s*src\s*:\s*["\'](?P<url>.+?)["\'].*'.format(urltype),
-                webpage, 'video URL', group='url')
+        def decrypt_src(encoded, val):
+            ALPHABET = '=/+9876543210zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA'
+            encoded = re.sub(r'[^A-Za-z0-9+/=]', '', encoded)
+            decoded = ''
+            sm = [None] * 4
+            i = 0
+            str_len = len(encoded)
+            while i < str_len:
+                for j in range(4):
+                    sm[j % 4] = ALPHABET.index(encoded[i])
+                    i += 1
+                char_code = ((sm[0] << 0x2) | (sm[1] >> 0x4)) ^ val
+                decoded += compat_chr(char_code)
+                if sm[2] != 0x40:
+                    char_code = ((sm[1] & 0xf) << 0x4) | (sm[2] >> 0x2)
+                    decoded += compat_chr(char_code)
+                if sm[3] != 0x40:
+                    char_code = ((sm[2] & 0x3) << 0x6) | sm[3]
+                    decoded += compat_chr(char_code)
+            return decoded
 
         video_id = self._match_id(url)
+
         webpage = self._download_webpage(url, video_id)
 
-        title = self._og_search_title(webpage)
-        url = 'https:' + extract_url('video/mp4')
-        dashurl = extract_url(r'application/dash\+xml')
+        title = self._og_search_title(webpage, default=video_id)
 
-        formats = [{
-            'url': url,
-            'ext': 'mp4',
-            'width': 1280,
-            'height': 720,
-            'format_id': 'mp4',
-        }]
+        formats = []
+        for format_ in re.findall(r'({[^}]*\bsrc\s*:\s*[^}]*})', webpage):
+            mobj = re.search(r'(src\s*:\s*[^(]+\(([^)]*)\)[\s,]*)', format_)
+            if mobj is None:
+                continue
+
+            format_ = format_.replace(mobj.group(0), '')
+
+            video = self._parse_json(
+                format_, video_id, transform_source=js_to_json,
+                fatal=False) or {}
+
+            mobj = re.search(
+                r'([\'"])(?P<src>(?:(?!\1).)+)\1\s*,\s*(?P<val>\d+)',
+                mobj.group(1))
+            if mobj is None:
+                continue
+
+            src = decrypt_src(mobj.group('src'), int_or_none(mobj.group('val')))
+            if not src:
+                continue
+
+            ext = determine_ext(src, default_ext=None)
+            if video.get('type') == 'application/dash+xml' or ext == 'mpd':
+                formats.extend(self._extract_mpd_formats(
+                    src, video_id, mpd_id='dash', fatal=False))
+            else:
+                formats.append({
+                    'url': src,
+                    'ext': ext or 'mp4',
+                    'width': int_or_none(video.get('width')),
+                    'height': int_or_none(video.get('height')),
+                    'tbr': int_or_none(video.get('bitrate')),
+                })
 
-        formats.extend(self._extract_mpd_formats(
-            dashurl, video_id, mpd_id='dash', fatal=False))
+        if not formats:
+            error = self._search_regex(
+                r'<p[^>]+\bclass=["\']lead[^>]+>(.+?)</p>', webpage,
+                'error', default=None)
+            if not error and '>Sorry' in webpage:
+                error = 'Video %s is not available' % video_id
+            if error:
+                raise ExtractorError(error, expected=True)
 
         self._sort_formats(formats)