]> jfr.im git - yt-dlp.git/blobdiff - yt_dlp/downloader/hls.py
[ie/afreecatv:catchstory] Add extractor (#10235)
[yt-dlp.git] / yt_dlp / downloader / hls.py
index 61312c5ba558218e4452a91698078828126f0429..0a00d5dabbcd705fd72bbd3b5eb658e53f92804f 100644 (file)
@@ -1,23 +1,21 @@
-from __future__ import unicode_literals
-
-import re
-import io
 import binascii
+import io
+import re
+import urllib.parse
 
-from ..downloader import get_suitable_downloader
-from .fragment import FragmentFD
+from . import get_suitable_downloader
 from .external import FFmpegFD
-
-from ..compat import (
-    compat_pycrypto_AES,
-    compat_urlparse,
-)
+from .fragment import FragmentFD
+from .. import webvtt
+from ..dependencies import Cryptodome
 from ..utils import (
+    bug_reports_message,
     parse_m3u8_attributes,
+    remove_start,
+    traverse_obj,
     update_url_query,
-    bug_reports_message,
+    urljoin,
 )
-from .. import webvtt
 
 
 class HlsFD(FragmentFD):
@@ -30,7 +28,16 @@ class HlsFD(FragmentFD):
     FD_NAME = 'hlsnative'
 
     @staticmethod
-    def can_download(manifest, info_dict, allow_unplayable_formats=False):
+    def _has_drm(manifest):  # TODO: https://github.com/yt-dlp/yt-dlp/pull/5039
+        return bool(re.search('|'.join((
+            r'#EXT-X-(?:SESSION-)?KEY:.*?URI="skd://',  # Apple FairPlay
+            r'#EXT-X-(?:SESSION-)?KEY:.*?KEYFORMAT="com\.apple\.streamingkeydelivery"',  # Apple FairPlay
+            r'#EXT-X-(?:SESSION-)?KEY:.*?KEYFORMAT="com\.microsoft\.playready"',  # Microsoft PlayReady
+            r'#EXT-X-FAXS-CM:',  # Adobe Flash Access
+        )), manifest))
+
+    @classmethod
+    def can_download(cls, manifest, info_dict, allow_unplayable_formats=False):
         UNSUPPORTED_FEATURES = [
             # r'#EXT-X-BYTERANGE',  # playlists composed of byte ranges of media files [2]
 
@@ -52,31 +59,47 @@ def can_download(manifest, info_dict, allow_unplayable_formats=False):
         ]
         if not allow_unplayable_formats:
             UNSUPPORTED_FEATURES += [
-                r'#EXT-X-KEY:METHOD=(?!NONE|AES-128)',  # encrypted streams [1]
+                r'#EXT-X-KEY:METHOD=(?!NONE|AES-128)',  # encrypted streams [1], but not necessarily DRM
             ]
 
         def check_results():
             yield not info_dict.get('is_live')
             for feature in UNSUPPORTED_FEATURES:
                 yield not re.search(feature, manifest)
+            if not allow_unplayable_formats:
+                yield not cls._has_drm(manifest)
         return all(check_results())
 
     def real_download(self, filename, info_dict):
         man_url = info_dict['url']
-        self.to_screen('[%s] Downloading m3u8 manifest' % self.FD_NAME)
+        self.to_screen(f'[{self.FD_NAME}] Downloading m3u8 manifest')
 
         urlh = self.ydl.urlopen(self._prepare_url(info_dict, man_url))
-        man_url = urlh.geturl()
+        man_url = urlh.url
         s = urlh.read().decode('utf-8', 'ignore')
 
         can_download, message = self.can_download(s, info_dict, self.params.get('allow_unplayable_formats')), None
-        if can_download and not compat_pycrypto_AES and '#EXT-X-KEY:METHOD=AES-128' in s:
-            if FFmpegFD.available():
+        if can_download:
+            has_ffmpeg = FFmpegFD.available()
+            no_crypto = not Cryptodome.AES and '#EXT-X-KEY:METHOD=AES-128' in s
+            if no_crypto and has_ffmpeg:
                 can_download, message = False, 'The stream has AES-128 encryption and pycryptodomex is not available'
-            else:
+            elif no_crypto:
                 message = ('The stream has AES-128 encryption and neither ffmpeg nor pycryptodomex are available; '
                            'Decryption will be performed natively, but will be extremely slow')
+            elif info_dict.get('extractor_key') == 'Generic' and re.search(r'(?m)#EXT-X-MEDIA-SEQUENCE:(?!0$)', s):
+                install_ffmpeg = '' if has_ffmpeg else 'install ffmpeg and '
+                message = ('Live HLS streams are not supported by the native downloader. If this is a livestream, '
+                           f'please {install_ffmpeg}add "--downloader ffmpeg --hls-use-mpegts" to your command')
         if not can_download:
+            if self._has_drm(s) and not self.params.get('allow_unplayable_formats'):
+                if info_dict.get('has_drm') and self.params.get('test'):
+                    self.to_screen(f'[{self.FD_NAME}] This format is DRM protected', skip_eol=True)
+                else:
+                    self.report_error(
+                        'This format is DRM protected; Try selecting another format with --format or '
+                        'add --check-formats to automatically fallback to the next best format', tb=False)
+                return False
             message = message or 'Unsupported features have been detected'
             fd = FFmpegFD(self.ydl, self.params)
             self.report_warning(f'{message}; extraction will be delegated to {fd.get_basename()}')
@@ -93,8 +116,7 @@ def real_download(self, filename, info_dict):
         if real_downloader and not real_downloader.supports_manifest(s):
             real_downloader = None
         if real_downloader:
-            self.to_screen(
-                '[%s] Fragment downloads will be delegated to %s' % (self.FD_NAME, real_downloader.get_basename()))
+            self.to_screen(f'[{self.FD_NAME}] Fragment downloads will be delegated to {real_downloader.get_basename()}')
 
         def is_ad_fragment_start(s):
             return (s.startswith('#ANVATO-SEGMENT-INFO') and 'type=ad' in s
@@ -138,13 +160,22 @@ def is_ad_fragment_end(s):
         extra_state = ctx.setdefault('extra_state', {})
 
         format_index = info_dict.get('format_index')
-        extra_query = None
-        extra_param_to_segment_url = info_dict.get('extra_param_to_segment_url')
-        if extra_param_to_segment_url:
-            extra_query = compat_urlparse.parse_qs(extra_param_to_segment_url)
+        extra_segment_query = None
+        if extra_param_to_segment_url := info_dict.get('extra_param_to_segment_url'):
+            extra_segment_query = urllib.parse.parse_qs(extra_param_to_segment_url)
+        extra_key_query = None
+        if extra_param_to_key_url := info_dict.get('extra_param_to_key_url'):
+            extra_key_query = urllib.parse.parse_qs(extra_param_to_key_url)
         i = 0
         media_sequence = 0
         decrypt_info = {'METHOD': 'NONE'}
+        external_aes_key = traverse_obj(info_dict, ('hls_aes', 'key'))
+        if external_aes_key:
+            external_aes_key = binascii.unhexlify(remove_start(external_aes_key, '0x'))
+            assert len(external_aes_key) in (16, 24, 32), 'Invalid length for HLS AES-128 key'
+        external_aes_iv = traverse_obj(info_dict, ('hls_aes', 'iv'))
+        if external_aes_iv:
+            external_aes_iv = binascii.unhexlify(remove_start(external_aes_iv, '0x').zfill(32))
         byte_range = {}
         discontinuity_count = 0
         frag_index = 0
@@ -160,12 +191,9 @@ def is_ad_fragment_end(s):
                     frag_index += 1
                     if frag_index <= ctx['fragment_index']:
                         continue
-                    frag_url = (
-                        line
-                        if re.match(r'^https?://', line)
-                        else compat_urlparse.urljoin(man_url, line))
-                    if extra_query:
-                        frag_url = update_url_query(frag_url, extra_query)
+                    frag_url = urljoin(man_url, line)
+                    if extra_segment_query:
+                        frag_url = update_url_query(frag_url, extra_segment_query)
 
                     fragments.append({
                         'frag_index': frag_index,
@@ -185,21 +213,9 @@ def is_ad_fragment_end(s):
                         return False
                     frag_index += 1
                     map_info = parse_m3u8_attributes(line[11:])
-                    frag_url = (
-                        map_info.get('URI')
-                        if re.match(r'^https?://', map_info.get('URI'))
-                        else compat_urlparse.urljoin(man_url, map_info.get('URI')))
-                    if extra_query:
-                        frag_url = update_url_query(frag_url, extra_query)
-
-                    fragments.append({
-                        'frag_index': frag_index,
-                        'url': frag_url,
-                        'decrypt_info': decrypt_info,
-                        'byte_range': byte_range,
-                        'media_sequence': media_sequence
-                    })
-                    media_sequence += 1
+                    frag_url = urljoin(man_url, map_info.get('URI'))
+                    if extra_segment_query:
+                        frag_url = update_url_query(frag_url, extra_segment_query)
 
                     if map_info.get('BYTERANGE'):
                         splitted_byte_range = map_info.get('BYTERANGE').split('@')
@@ -209,19 +225,33 @@ def is_ad_fragment_end(s):
                             'end': sub_range_start + int(splitted_byte_range[0]),
                         }
 
+                    fragments.append({
+                        'frag_index': frag_index,
+                        'url': frag_url,
+                        'decrypt_info': decrypt_info,
+                        'byte_range': byte_range,
+                        'media_sequence': media_sequence,
+                    })
+                    media_sequence += 1
+
                 elif line.startswith('#EXT-X-KEY'):
                     decrypt_url = decrypt_info.get('URI')
                     decrypt_info = parse_m3u8_attributes(line[11:])
                     if decrypt_info['METHOD'] == 'AES-128':
-                        if 'IV' in decrypt_info:
+                        if external_aes_iv:
+                            decrypt_info['IV'] = external_aes_iv
+                        elif 'IV' in decrypt_info:
                             decrypt_info['IV'] = binascii.unhexlify(decrypt_info['IV'][2:].zfill(32))
-                        if not re.match(r'^https?://', decrypt_info['URI']):
-                            decrypt_info['URI'] = compat_urlparse.urljoin(
-                                man_url, decrypt_info['URI'])
-                        if extra_query:
-                            decrypt_info['URI'] = update_url_query(decrypt_info['URI'], extra_query)
-                        if decrypt_url != decrypt_info['URI']:
-                            decrypt_info['KEY'] = None
+                        if external_aes_key:
+                            decrypt_info['KEY'] = external_aes_key
+                        else:
+                            decrypt_info['URI'] = urljoin(man_url, decrypt_info['URI'])
+                            if extra_key_query or extra_segment_query:
+                                # Fall back to extra_segment_query to key for backwards compat
+                                decrypt_info['URI'] = update_url_query(
+                                    decrypt_info['URI'], extra_key_query or extra_segment_query)
+                            if decrypt_url != decrypt_info['URI']:
+                                decrypt_info['KEY'] = None
 
                 elif line.startswith('#EXT-X-MEDIA-SEQUENCE'):
                     media_sequence = int(line[22:])
@@ -324,13 +354,12 @@ def pack_fragment(frag_content, frag_index):
                             # XXX: this should probably be silent as well
                             # or verify that all segments contain the same data
                             self.report_warning(bug_reports_message(
-                                'Discarding a %s block found in the middle of the stream; '
-                                'if the subtitles display incorrectly,'
-                                % (type(block).__name__)))
+                                f'Discarding a {type(block).__name__} block found in the middle of the stream; '
+                                'if the subtitles display incorrectly,'))
                             continue
                     block.write_into(output)
 
-                return output.getvalue().encode('utf-8')
+                return output.getvalue().encode()
 
             def fin_fragments():
                 dedup_window = extra_state.get('webvtt_dedup_window')
@@ -341,9 +370,12 @@ def fin_fragments():
                 for cue in dedup_window:
                     webvtt.CueBlock.from_json(cue).write_into(output)
 
-                return output.getvalue().encode('utf-8')
+                return output.getvalue().encode()
 
-            self.download_and_append_fragments(
-                ctx, fragments, info_dict, pack_func=pack_fragment, finish_func=fin_fragments)
+            if len(fragments) == 1:
+                self.download_and_append_fragments(ctx, fragments, info_dict)
+            else:
+                self.download_and_append_fragments(
+                    ctx, fragments, info_dict, pack_func=pack_fragment, finish_func=fin_fragments)
         else:
             return self.download_and_append_fragments(ctx, fragments, info_dict)