diff options
Diffstat (limited to 'youtube_dl/extractor/mixcloud.py')
| -rw-r--r-- | youtube_dl/extractor/mixcloud.py | 146 |
1 files changed, 114 insertions, 32 deletions
diff --git a/youtube_dl/extractor/mixcloud.py b/youtube_dl/extractor/mixcloud.py index 0efbe66..f331db8 100644 --- a/youtube_dl/extractor/mixcloud.py +++ b/youtube_dl/extractor/mixcloud.py @@ -9,14 +9,19 @@ from .common import InfoExtractor from ..compat import ( compat_chr, compat_ord, + compat_str, compat_urllib_parse_unquote, compat_urlparse, + compat_zip ) from ..utils import ( clean_html, ExtractorError, + int_or_none, OnDemandPagedList, str_to_int, + try_get, + urljoin, ) @@ -53,16 +58,12 @@ class MixcloudIE(InfoExtractor): 'only_matching': True, }] - # See https://www.mixcloud.com/media/js2/www_js_2.9e23256562c080482435196ca3975ab5.js @staticmethod - def _decrypt_play_info(play_info): - KEY = 'pleasedontdownloadourmusictheartistswontgetpaid' - - play_info = base64.b64decode(play_info.encode('ascii')) - + def _decrypt_xor_cipher(key, ciphertext): + """Encrypt/Decrypt XOR cipher. Both ways are possible because it's XOR.""" return ''.join([ - compat_chr(compat_ord(ch) ^ compat_ord(KEY[idx % len(KEY)])) - for idx, ch in enumerate(play_info)]) + compat_chr(compat_ord(ch) ^ compat_ord(k)) + for ch, k in compat_zip(ciphertext, itertools.cycle(key))]) def _real_extract(self, url): mobj = re.match(self._VALID_URL, url) @@ -72,38 +73,119 @@ class MixcloudIE(InfoExtractor): webpage = self._download_webpage(url, track_id) + # Legacy path + encrypted_play_info = self._search_regex( + r'm-play-info="([^"]+)"', webpage, 'play info', default=None) + + if encrypted_play_info is not None: + # Decode + encrypted_play_info = base64.b64decode(encrypted_play_info) + else: + # New path + full_info_json = self._parse_json(self._html_search_regex( + r'<script id="relay-data" type="text/x-mixcloud">([^<]+)</script>', + webpage, 'play info'), 'play info') + for item in full_info_json: + item_data = try_get( + item, lambda x: x['cloudcast']['data']['cloudcastLookup'], + dict) + if try_get(item_data, lambda x: x['streamInfo']['url']): + info_json = item_data + break + else: + raise ExtractorError('Failed to extract matching stream info') + message = self._html_search_regex( r'(?s)<div[^>]+class="global-message cloudcast-disabled-notice-light"[^>]*>(.+?)<(?:a|/div)', webpage, 'error message', default=None) - encrypted_play_info = self._search_regex( - r'm-play-info="([^"]+)"', webpage, 'play info') - play_info = self._parse_json( - self._decrypt_play_info(encrypted_play_info), track_id) - - if message and 'stream_url' not in play_info: - raise ExtractorError('%s said: %s' % (self.IE_NAME, message), expected=True) - - song_url = play_info['stream_url'] - - title = self._html_search_regex(r'm-title="([^"]+)"', webpage, 'title') - thumbnail = self._proto_relative_url(self._html_search_regex( - r'm-thumbnail-url="([^"]+)"', webpage, 'thumbnail', fatal=False)) - uploader = self._html_search_regex( - r'm-owner-name="([^"]+)"', webpage, 'uploader', fatal=False) - uploader_id = self._search_regex( - r'\s+"profile": "([^"]+)",', webpage, 'uploader id', fatal=False) - description = self._og_search_description(webpage) - view_count = str_to_int(self._search_regex( - [r'<meta itemprop="interactionCount" content="UserPlays:([0-9]+)"', - r'/listeners/?">([0-9,.]+)</a>', - r'(?:m|data)-tooltip=["\']([\d,.]+) plays'], - webpage, 'play count', default=None)) + js_url = self._search_regex( + r'<script[^>]+\bsrc=["\"](https://(?:www\.)?mixcloud\.com/media/(?:js2/www_js_4|js/www)\.[^>]+\.js)', + webpage, 'js url') + js = self._download_webpage(js_url, track_id, 'Downloading JS') + # Known plaintext attack + if encrypted_play_info: + kps = ['{"stream_url":'] + kpa_target = encrypted_play_info + else: + kps = ['https://', 'http://'] + kpa_target = base64.b64decode(info_json['streamInfo']['url']) + for kp in kps: + partial_key = self._decrypt_xor_cipher(kpa_target, kp) + for quote in ["'", '"']: + key = self._search_regex( + r'{0}({1}[^{0}]*){0}'.format(quote, re.escape(partial_key)), + js, 'encryption key', default=None) + if key is not None: + break + else: + continue + break + else: + raise ExtractorError('Failed to extract encryption key') + + if encrypted_play_info is not None: + play_info = self._parse_json(self._decrypt_xor_cipher(key, encrypted_play_info), 'play info') + if message and 'stream_url' not in play_info: + raise ExtractorError('%s said: %s' % (self.IE_NAME, message), expected=True) + song_url = play_info['stream_url'] + formats = [{ + 'format_id': 'normal', + 'url': song_url + }] + + title = self._html_search_regex(r'm-title="([^"]+)"', webpage, 'title') + thumbnail = self._proto_relative_url(self._html_search_regex( + r'm-thumbnail-url="([^"]+)"', webpage, 'thumbnail', fatal=False)) + uploader = self._html_search_regex( + r'm-owner-name="([^"]+)"', webpage, 'uploader', fatal=False) + uploader_id = self._search_regex( + r'\s+"profile": "([^"]+)",', webpage, 'uploader id', fatal=False) + description = self._og_search_description(webpage) + view_count = str_to_int(self._search_regex( + [r'<meta itemprop="interactionCount" content="UserPlays:([0-9]+)"', + r'/listeners/?">([0-9,.]+)</a>', + r'(?:m|data)-tooltip=["\']([\d,.]+) plays'], + webpage, 'play count', default=None)) + + else: + title = info_json['name'] + thumbnail = urljoin( + 'https://thumbnailer.mixcloud.com/unsafe/600x600/', + try_get(info_json, lambda x: x['picture']['urlRoot'], compat_str)) + uploader = try_get(info_json, lambda x: x['owner']['displayName']) + uploader_id = try_get(info_json, lambda x: x['owner']['username']) + description = try_get(info_json, lambda x: x['description']) + view_count = int_or_none(try_get(info_json, lambda x: x['plays'])) + + stream_info = info_json['streamInfo'] + formats = [] + + for url_key in ('url', 'hlsUrl', 'dashUrl'): + format_url = stream_info.get(url_key) + if not format_url: + continue + decrypted = self._decrypt_xor_cipher(key, base64.b64decode(format_url)) + if not decrypted: + continue + if url_key == 'hlsUrl': + formats.extend(self._extract_m3u8_formats( + decrypted, track_id, 'mp4', entry_protocol='m3u8_native', + m3u8_id='hls', fatal=False)) + elif url_key == 'dashUrl': + formats.extend(self._extract_mpd_formats( + decrypted, track_id, mpd_id='dash', fatal=False)) + else: + formats.append({ + 'format_id': 'http', + 'url': decrypted, + }) + self._sort_formats(formats) return { 'id': track_id, 'title': title, - 'url': song_url, + 'formats': formats, 'description': description, 'thumbnail': thumbnail, 'uploader': uploader, |