yt_dlp/extractor/vk.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import collections
   5 import re
   6
   7 from .common import InfoExtractor
   8 from ..compat import compat_urlparse
   9 from ..utils import (
  10     clean_html,
  11     ExtractorError,
  12     get_element_by_class,
  13     int_or_none,
  14     orderedSet,
  15     str_or_none,
  16     str_to_int,
  17     unescapeHTML,
  18     unified_timestamp,
  19     url_or_none,
  20     urlencode_postdata,
  21 )
  22 from .dailymotion import DailymotionIE
  23 from .odnoklassniki import OdnoklassnikiIE
  24 from .pladform import PladformIE
  25 from .vimeo import VimeoIE
  26 from .youtube import YoutubeIE
  27
  28
  29 class VKBaseIE(InfoExtractor):
  30     _NETRC_MACHINE = 'vk'
  31
  32     def _login(self):
  33         username, password = self._get_login_info()
  34         if username is None:
  35             return
  36
  37         login_page, url_handle = self._download_webpage_handle(
  38             'https://vk.com', None, 'Downloading login page')
  39
  40         login_form = self._hidden_inputs(login_page)
  41
  42         login_form.update({
  43             'email': username.encode('cp1251'),
  44             'pass': password.encode('cp1251'),
  45         })
  46
  47         # vk serves two same remixlhk cookies in Set-Cookie header and expects
  48         # first one to be actually set
  49         self._apply_first_set_cookie_header(url_handle, 'remixlhk')
  50
  51         login_page = self._download_webpage(
  52             'https://vk.com/login', None,
  53             note='Logging in',
  54             data=urlencode_postdata(login_form))
  55
  56         if re.search(r'onLoginFailed', login_page):
  57             raise ExtractorError(
  58                 'Unable to login, incorrect username and/or password', expected=True)
  59
  60     def _real_initialize(self):
  61         self._login()
  62
  63     def _download_payload(self, path, video_id, data, fatal=True):
  64         data['al'] = 1
  65         code, payload = self._download_json(
  66             'https://vk.com/%s.php' % path, video_id,
  67             data=urlencode_postdata(data), fatal=fatal,
  68             headers={'X-Requested-With': 'XMLHttpRequest'})['payload']
  69         if code == '3':
  70             self.raise_login_required()
  71         elif code == '8':
  72             raise ExtractorError(clean_html(payload[0][1:-1]), expected=True)
  73         return payload
  74
  75
  76 class VKIE(VKBaseIE):
  77     IE_NAME = 'vk'
  78     IE_DESC = 'VK'
  79     _VALID_URL = r'''(?x)
  80                     https?://
  81                         (?:
  82                             (?:
  83                                 (?:(?:m|new)\.)?vk\.com/video_|
  84                                 (?:www\.)?daxab.com/
  85                             )
  86                             ext\.php\?(?P<embed_query>.*?\boid=(?P<oid>-?\d+).*?\bid=(?P<id>\d+).*)|
  87                             (?:
  88                                 (?:(?:m|new)\.)?vk\.com/(?:.+?\?.*?z=)?(?:video|clip)|
  89                                 (?:www\.)?daxab.com/embed/
  90                             )
  91                             (?P<videoid>-?\d+_\d+)(?:.*\blist=(?P<list_id>([\da-f]+)|(ln-[\da-zA-Z]+)))?
  92                         )
  93                     '''
  94     _TESTS = [
  95         {
  96             'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
  97             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
  98             'info_dict': {
  99                 'id': '-77521_162222515',
 100                 'ext': 'mp4',
 101                 'title': 'ProtivoGunz - Хуёвая песня',
 102                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 103                 'uploader_id': '-77521',
 104                 'duration': 195,
 105                 'timestamp': 1329049880,
 106                 'upload_date': '20120212',
 107             },
 108         },
 109         {
 110             'url': 'http://vk.com/video205387401_165548505',
 111             'info_dict': {
 112                 'id': '205387401_165548505',
 113                 'ext': 'mp4',
 114                 'title': 'No name',
 115                 'uploader': 'Tom Cruise',
 116                 'uploader_id': '205387401',
 117                 'duration': 9,
 118                 'timestamp': 1374364108,
 119                 'upload_date': '20130720',
 120             }
 121         },
 122         {
 123             'note': 'Embedded video',
 124             'url': 'https://vk.com/video_ext.php?oid=-77521&id=162222515&hash=87b046504ccd8bfa',
 125             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
 126             'info_dict': {
 127                 'id': '-77521_162222515',
 128                 'ext': 'mp4',
 129                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 130                 'title': 'ProtivoGunz - Хуёвая песня',
 131                 'duration': 195,
 132                 'upload_date': '20120212',
 133                 'timestamp': 1329049880,
 134                 'uploader_id': '-77521',
 135             },
 136         },
 137         {
 138             # VIDEO NOW REMOVED
 139             # please update if you find a video whose URL follows the same pattern
 140             'url': 'http://vk.com/video-8871596_164049491',
 141             'md5': 'a590bcaf3d543576c9bd162812387666',
 142             'note': 'Only available for registered users',
 143             'info_dict': {
 144                 'id': '-8871596_164049491',
 145                 'ext': 'mp4',
 146                 'uploader': 'Триллеры',
 147                 'title': '► Бойцовский клуб / Fight Club 1999 [HD 720]',
 148                 'duration': 8352,
 149                 'upload_date': '20121218',
 150                 'view_count': int,
 151             },
 152             'skip': 'Removed',
 153         },
 154         {
 155             'url': 'http://vk.com/hd_kino_mania?z=video-43215063_168067957%2F15c66b9b533119788d',
 156             'info_dict': {
 157                 'id': '-43215063_168067957',
 158                 'ext': 'mp4',
 159                 'uploader': 'Bro Mazter',
 160                 'title': ' ',
 161                 'duration': 7291,
 162                 'upload_date': '20140328',
 163                 'uploader_id': '223413403',
 164                 'timestamp': 1396018030,
 165             },
 166             'skip': 'Requires vk account credentials',
 167         },
 168         {
 169             'url': 'http://m.vk.com/video-43215063_169084319?list=125c627d1aa1cebb83&from=wall-43215063_2566540',
 170             'md5': '0c45586baa71b7cb1d0784ee3f4e00a6',
 171             'note': 'ivi.ru embed',
 172             'info_dict': {
 173                 'id': '-43215063_169084319',
 174                 'ext': 'mp4',
 175                 'title': 'Книга Илая',
 176                 'duration': 6771,
 177                 'upload_date': '20140626',
 178                 'view_count': int,
 179             },
 180             'skip': 'Removed',
 181         },
 182         {
 183             'url': 'https://vk.com/video-93049196_456239755?list=ln-cBjJ7S4jYYx3ADnmDT',
 184             'info_dict': {
 185                 'id': '-93049196_456239755',
 186                 'ext': 'mp4',
 187                 'title': '8 серия (озвучка)',
 188                 'duration': 8383,
 189                 'upload_date': '20211222',
 190                 'view_count': int,
 191             },
 192         },
 193         {
 194             # video (removed?) only available with list id
 195             'url': 'https://vk.com/video30481095_171201961?list=8764ae2d21f14088d4',
 196             'md5': '091287af5402239a1051c37ec7b92913',
 197             'info_dict': {
 198                 'id': '30481095_171201961',
 199                 'ext': 'mp4',
 200                 'title': 'ТюменцевВВ_09.07.2015',
 201                 'uploader': 'Anton Ivanov',
 202                 'duration': 109,
 203                 'upload_date': '20150709',
 204                 'view_count': int,
 205             },
 206             'skip': 'Removed',
 207         },
 208         {
 209             # youtube embed
 210             'url': 'https://vk.com/video276849682_170681728',
 211             'info_dict': {
 212                 'id': 'V3K4mi0SYkc',
 213                 'ext': 'mp4',
 214                 'title': "DSWD Awards 'Children's Joy Foundation, Inc.' Certificate of Registration and License to Operate",
 215                 'description': 'md5:bf9c26cfa4acdfb146362682edd3827a',
 216                 'duration': 178,
 217                 'upload_date': '20130116',
 218                 'uploader': "Children's Joy Foundation Inc.",
 219                 'uploader_id': 'thecjf',
 220                 'view_count': int,
 221             },
 222         },
 223         {
 224             # dailymotion embed
 225             'url': 'https://vk.com/video-37468416_456239855',
 226             'info_dict': {
 227                 'id': 'k3lz2cmXyRuJQSjGHUv',
 228                 'ext': 'mp4',
 229                 'title': 'md5:d52606645c20b0ddbb21655adaa4f56f',
 230                 'description': 'md5:424b8e88cc873217f520e582ba28bb36',
 231                 'uploader': 'AniLibria.Tv',
 232                 'upload_date': '20160914',
 233                 'uploader_id': 'x1p5vl5',
 234                 'timestamp': 1473877246,
 235             },
 236             'params': {
 237                 'skip_download': True,
 238             },
 239         },
 240         {
 241             # video key is extra_data not url\d+
 242             'url': 'http://vk.com/video-110305615_171782105',
 243             'md5': 'e13fcda136f99764872e739d13fac1d1',
 244             'info_dict': {
 245                 'id': '-110305615_171782105',
 246                 'ext': 'mp4',
 247                 'title': 'S-Dance, репетиции к The way show',
 248                 'uploader': 'THE WAY SHOW | 17 апреля',
 249                 'uploader_id': '-110305615',
 250                 'timestamp': 1454859345,
 251                 'upload_date': '20160207',
 252             },
 253             'params': {
 254                 'skip_download': True,
 255             },
 256         },
 257         {
 258             # finished live stream, postlive_mp4
 259             'url': 'https://vk.com/videos-387766?z=video-387766_456242764%2Fpl_-387766_-2',
 260             'info_dict': {
 261                 'id': '-387766_456242764',
 262                 'ext': 'mp4',
 263                 'title': 'ИгроМир 2016 День 1 — Игромания Утром',
 264                 'uploader': 'Игромания',
 265                 'duration': 5239,
 266                 # TODO: use act=show to extract view_count
 267                 # 'view_count': int,
 268                 'upload_date': '20160929',
 269                 'uploader_id': '-387766',
 270                 'timestamp': 1475137527,
 271             },
 272             'params': {
 273                 'skip_download': True,
 274             },
 275         },
 276         {
 277             # live stream, hls and rtmp links, most likely already finished live
 278             # stream by the time you are reading this comment
 279             'url': 'https://vk.com/video-140332_456239111',
 280             'only_matching': True,
 281         },
 282         {
 283             # removed video, just testing that we match the pattern
 284             'url': 'http://vk.com/feed?z=video-43215063_166094326%2Fbb50cacd3177146d7a',
 285             'only_matching': True,
 286         },
 287         {
 288             # age restricted video, requires vk account credentials
 289             'url': 'https://vk.com/video205387401_164765225',
 290             'only_matching': True,
 291         },
 292         {
 293             # pladform embed
 294             'url': 'https://vk.com/video-76116461_171554880',
 295             'only_matching': True,
 296         },
 297         {
 298             'url': 'http://new.vk.com/video205387401_165548505',
 299             'only_matching': True,
 300         },
 301         {
 302             # This video is no longer available, because its author has been blocked.
 303             'url': 'https://vk.com/video-10639516_456240611',
 304             'only_matching': True,
 305         },
 306         {
 307             # The video is not available in your region.
 308             'url': 'https://vk.com/video-51812607_171445436',
 309             'only_matching': True,
 310         },
 311         {
 312             'url': 'https://vk.com/clip30014565_456240946',
 313             'only_matching': True,
 314         }]
 315
 316     @staticmethod
 317     def _extract_sibnet_urls(webpage):
 318         # https://help.sibnet.ru/?sibnet_video_embed
 319         return [unescapeHTML(mobj.group('url')) for mobj in re.finditer(
 320             r'<iframe\b[^>]+\bsrc=(["\'])(?P<url>(?:https?:)?//video\.sibnet\.ru/shell\.php\?.*?\bvideoid=\d+.*?)\1',
 321             webpage)]
 322
 323     def _real_extract(self, url):
 324         mobj = self._match_valid_url(url)
 325         video_id = mobj.group('videoid')
 326
 327         mv_data = {}
 328         if video_id:
 329             data = {
 330                 'act': 'show_inline',
 331                 'video': video_id,
 332             }
 333             # Some videos (removed?) can only be downloaded with list id specified
 334             list_id = mobj.group('list_id')
 335             if list_id:
 336                 data['list'] = list_id
 337
 338             payload = self._download_payload('al_video', video_id, data)
 339             info_page = payload[1]
 340             opts = payload[-1]
 341             mv_data = opts.get('mvData') or {}
 342             player = opts.get('player') or {}
 343         else:
 344             video_id = '%s_%s' % (mobj.group('oid'), mobj.group('id'))
 345
 346             info_page = self._download_webpage(
 347                 'http://vk.com/video_ext.php?' + mobj.group('embed_query'), video_id)
 348
 349             error_message = self._html_search_regex(
 350                 [r'(?s)<!><div[^>]+class="video_layer_message"[^>]*>(.+?)</div>',
 351                     r'(?s)<div[^>]+id="video_ext_msg"[^>]*>(.+?)</div>'],
 352                 info_page, 'error message', default=None)
 353             if error_message:
 354                 raise ExtractorError(error_message, expected=True)
 355
 356             if re.search(r'<!>/login\.php\?.*\bact=security_check', info_page):
 357                 raise ExtractorError(
 358                     'You are trying to log in from an unusual location. You should confirm ownership at vk.com to log in with this IP.',
 359                     expected=True)
 360
 361             ERROR_COPYRIGHT = 'Video %s has been removed from public access due to rightholder complaint.'
 362
 363             ERRORS = {
 364                 r'>Видеозапись .*? была изъята из публичного доступа в связи с обращением правообладателя.<':
 365                 ERROR_COPYRIGHT,
 366
 367                 r'>The video .*? was removed from public access by request of the copyright holder.<':
 368                 ERROR_COPYRIGHT,
 369
 370                 r'<!>Please log in or <':
 371                 'Video %s is only available for registered users, '
 372                 'use --username and --password options to provide account credentials.',
 373
 374                 r'<!>Unknown error':
 375                 'Video %s does not exist.',
 376
 377                 r'<!>Видео временно недоступно':
 378                 'Video %s is temporarily unavailable.',
 379
 380                 r'<!>Access denied':
 381                 'Access denied to video %s.',
 382
 383                 r'<!>Видеозапись недоступна, так как её автор был заблокирован.':
 384                 'Video %s is no longer available, because its author has been blocked.',
 385
 386                 r'<!>This video is no longer available, because its author has been blocked.':
 387                 'Video %s is no longer available, because its author has been blocked.',
 388
 389                 r'<!>This video is no longer available, because it has been deleted.':
 390                 'Video %s is no longer available, because it has been deleted.',
 391
 392                 r'<!>The video .+? is not available in your region.':
 393                 'Video %s is not available in your region.',
 394             }
 395
 396             for error_re, error_msg in ERRORS.items():
 397                 if re.search(error_re, info_page):
 398                     raise ExtractorError(error_msg % video_id, expected=True)
 399
 400             player = self._parse_json(self._search_regex(
 401                 r'var\s+playerParams\s*=\s*({.+?})\s*;\s*\n',
 402                 info_page, 'player params'), video_id)
 403
 404         youtube_url = YoutubeIE._extract_url(info_page)
 405         if youtube_url:
 406             return self.url_result(youtube_url, YoutubeIE.ie_key())
 407
 408         vimeo_url = VimeoIE._extract_url(url, info_page)
 409         if vimeo_url is not None:
 410             return self.url_result(vimeo_url, VimeoIE.ie_key())
 411
 412         pladform_url = PladformIE._extract_url(info_page)
 413         if pladform_url:
 414             return self.url_result(pladform_url, PladformIE.ie_key())
 415
 416         m_rutube = re.search(
 417             r'\ssrc="((?:https?:)?//rutube\.ru\\?/(?:video|play)\\?/embed(?:.*?))\\?"', info_page)
 418         if m_rutube is not None:
 419             rutube_url = self._proto_relative_url(
 420                 m_rutube.group(1).replace('\\', ''))
 421             return self.url_result(rutube_url)
 422
 423         dailymotion_urls = DailymotionIE._extract_urls(info_page)
 424         if dailymotion_urls:
 425             return self.url_result(dailymotion_urls[0], DailymotionIE.ie_key())
 426
 427         odnoklassniki_url = OdnoklassnikiIE._extract_url(info_page)
 428         if odnoklassniki_url:
 429             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 430
 431         sibnet_urls = self._extract_sibnet_urls(info_page)
 432         if sibnet_urls:
 433             return self.url_result(sibnet_urls[0])
 434
 435         m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
 436         if m_opts:
 437             m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
 438             if m_opts_url:
 439                 opts_url = m_opts_url.group(1)
 440                 if opts_url.startswith('//'):
 441                     opts_url = 'http:' + opts_url
 442                 return self.url_result(opts_url)
 443
 444         data = player['params'][0]
 445         title = unescapeHTML(data['md_title'])
 446
 447         # 2 = live
 448         # 3 = post live (finished live)
 449         is_live = data.get('live') == 2
 450
 451         timestamp = unified_timestamp(self._html_search_regex(
 452             r'class=["\']mv_info_date[^>]+>([^<]+)(?:<|from)', info_page,
 453             'upload date', default=None)) or int_or_none(data.get('date'))
 454
 455         view_count = str_to_int(self._search_regex(
 456             r'class=["\']mv_views_count[^>]+>\s*([\d,.]+)',
 457             info_page, 'view count', default=None))
 458
 459         formats = []
 460         for format_id, format_url in data.items():
 461             format_url = url_or_none(format_url)
 462             if not format_url or not format_url.startswith(('http', '//', 'rtmp')):
 463                 continue
 464             if (format_id.startswith(('url', 'cache'))
 465                     or format_id in ('extra_data', 'live_mp4', 'postlive_mp4')):
 466                 height = int_or_none(self._search_regex(
 467                     r'^(?:url|cache)(\d+)', format_id, 'height', default=None))
 468                 formats.append({
 469                     'format_id': format_id,
 470                     'url': format_url,
 471                     'height': height,
 472                 })
 473             elif format_id == 'hls':
 474                 formats.extend(self._extract_m3u8_formats(
 475                     format_url, video_id, 'mp4', 'm3u8_native',
 476                     m3u8_id=format_id, fatal=False, live=is_live))
 477             elif format_id == 'rtmp':
 478                 formats.append({
 479                     'format_id': format_id,
 480                     'url': format_url,
 481                     'ext': 'flv',
 482                 })
 483         self._sort_formats(formats)
 484
 485         subtitles = {}
 486         for sub in data.get('subs') or {}:
 487             subtitles.setdefault(sub.get('lang', 'en'), []).append({
 488                 'ext': sub.get('title', '.srt').split('.')[-1],
 489                 'url': url_or_none(sub.get('url')),
 490             })
 491
 492         return {
 493             'id': video_id,
 494             'formats': formats,
 495             'title': title,
 496             'thumbnail': data.get('jpg'),
 497             'uploader': data.get('md_author'),
 498             'uploader_id': str_or_none(data.get('author_id') or mv_data.get('authorId')),
 499             'duration': int_or_none(data.get('duration') or mv_data.get('duration')),
 500             'timestamp': timestamp,
 501             'view_count': view_count,
 502             'like_count': int_or_none(mv_data.get('likes')),
 503             'comment_count': int_or_none(mv_data.get('commcount')),
 504             'is_live': is_live,
 505             'subtitles': subtitles,
 506         }
 507
 508
 509 class VKUserVideosIE(VKBaseIE):
 510     IE_NAME = 'vk:uservideos'
 511     IE_DESC = "VK - User's Videos"
 512     _VALID_URL = r'https?://(?:(?:m|new)\.)?vk\.com/video/@(?P<id>[^?$#/&]+)(?!\?.*\bz=video)(?:[/?#&](?:.*?\bsection=(?P<section>\w+))?|$)'
 513     _TEMPLATE_URL = 'https://vk.com/videos'
 514     _TESTS = [{
 515         'url': 'https://vk.com/video/@mobidevices',
 516         'info_dict': {
 517             'id': '-17892518_all',
 518         },
 519         'playlist_mincount': 1355,
 520     }, {
 521         'url': 'https://vk.com/video/@mobidevices?section=uploaded',
 522         'info_dict': {
 523             'id': '-17892518_uploaded',
 524         },
 525         'playlist_mincount': 182,
 526     }]
 527     _VIDEO = collections.namedtuple('Video', ['owner_id', 'id'])
 528
 529     def _entries(self, page_id, section):
 530         video_list_json = self._download_payload('al_video', page_id, {
 531             'act': 'load_videos_silent',
 532             'offset': 0,
 533             'oid': page_id,
 534             'section': section,
 535         })[0][section]
 536         count = video_list_json['count']
 537         total = video_list_json['total']
 538         video_list = video_list_json['list']
 539
 540         while True:
 541             for video in video_list:
 542                 v = self._VIDEO._make(video[:2])
 543                 video_id = '%d_%d' % (v.owner_id, v.id)
 544                 yield self.url_result(
 545                     'http://vk.com/video' + video_id, VKIE.ie_key(), video_id)
 546             if count >= total:
 547                 break
 548             video_list_json = self._download_payload('al_video', page_id, {
 549                 'act': 'load_videos_silent',
 550                 'offset': count,
 551                 'oid': page_id,
 552                 'section': section,
 553             })[0][section]
 554             count += video_list_json['count']
 555             video_list = video_list_json['list']
 556
 557     def _real_extract(self, url):
 558         u_id, section = self._match_valid_url(url).groups()
 559         webpage = self._download_webpage(url, u_id)
 560         page_id = self._search_regex(r'data-owner-id\s?=\s?"([^"]+)"', webpage, 'page_id')
 561         if not section:
 562             section = 'all'
 563
 564         return self.playlist_result(self._entries(page_id, section), '%s_%s' % (page_id, section))
 565
 566
 567 class VKWallPostIE(VKBaseIE):
 568     IE_NAME = 'vk:wallpost'
 569     _VALID_URL = r'https?://(?:(?:(?:(?:m|new)\.)?vk\.com/(?:[^?]+\?.*\bw=)?wall(?P<id>-?\d+_\d+)))'
 570     _TESTS = [{
 571         # public page URL, audio playlist
 572         'url': 'https://vk.com/bs.official?w=wall-23538238_35',
 573         'info_dict': {
 574             'id': '-23538238_35',
 575             'title': 'Black Shadow - Wall post -23538238_35',
 576             'description': 'md5:3f84b9c4f9ef499731cf1ced9998cc0c',
 577         },
 578         'playlist': [{
 579             'md5': '5ba93864ec5b85f7ce19a9af4af080f6',
 580             'info_dict': {
 581                 'id': '135220665_111806521',
 582                 'ext': 'mp4',
 583                 'title': 'Black Shadow - Слепое Верование',
 584                 'duration': 370,
 585                 'uploader': 'Black Shadow',
 586                 'artist': 'Black Shadow',
 587                 'track': 'Слепое Верование',
 588             },
 589         }, {
 590             'md5': '4cc7e804579122b17ea95af7834c9233',
 591             'info_dict': {
 592                 'id': '135220665_111802303',
 593                 'ext': 'mp4',
 594                 'title': 'Black Shadow - Война - Негасимое Бездны Пламя!',
 595                 'duration': 423,
 596                 'uploader': 'Black Shadow',
 597                 'artist': 'Black Shadow',
 598                 'track': 'Война - Негасимое Бездны Пламя!',
 599             },
 600         }],
 601         'params': {
 602             'skip_download': True,
 603             'usenetrc': True,
 604         },
 605         'skip': 'Requires vk account credentials',
 606     }, {
 607         # single YouTube embed, no leading -
 608         'url': 'https://vk.com/wall85155021_6319',
 609         'info_dict': {
 610             'id': '85155021_6319',
 611             'title': 'Сергей Горбунов - Wall post 85155021_6319',
 612         },
 613         'playlist_count': 1,
 614         'params': {
 615             'usenetrc': True,
 616         },
 617         'skip': 'Requires vk account credentials',
 618     }, {
 619         # wall page URL
 620         'url': 'https://vk.com/wall-23538238_35',
 621         'only_matching': True,
 622     }, {
 623         # mobile wall page URL
 624         'url': 'https://m.vk.com/wall-23538238_35',
 625         'only_matching': True,
 626     }]
 627     _BASE64_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/='
 628     _AUDIO = collections.namedtuple('Audio', ['id', 'owner_id', 'url', 'title', 'performer', 'duration', 'album_id', 'unk', 'author_link', 'lyrics', 'flags', 'context', 'extra', 'hashes', 'cover_url', 'ads'])
 629
 630     def _decode(self, enc):
 631         dec = ''
 632         e = n = 0
 633         for c in enc:
 634             r = self._BASE64_CHARS.index(c)
 635             cond = n % 4
 636             e = 64 * e + r if cond else r
 637             n += 1
 638             if cond:
 639                 dec += chr(255 & e >> (-2 * n & 6))
 640         return dec
 641
 642     def _unmask_url(self, mask_url, vk_id):
 643         if 'audio_api_unavailable' in mask_url:
 644             extra = mask_url.split('?extra=')[1].split('#')
 645             func, base = self._decode(extra[1]).split(chr(11))
 646             mask_url = list(self._decode(extra[0]))
 647             url_len = len(mask_url)
 648             indexes = [None] * url_len
 649             index = int(base) ^ vk_id
 650             for n in range(url_len - 1, -1, -1):
 651                 index = (url_len * (n + 1) ^ index + n) % url_len
 652                 indexes[n] = index
 653             for n in range(1, url_len):
 654                 c = mask_url[n]
 655                 index = indexes[url_len - 1 - n]
 656                 mask_url[n] = mask_url[index]
 657                 mask_url[index] = c
 658             mask_url = ''.join(mask_url)
 659         return mask_url
 660
 661     def _real_extract(self, url):
 662         post_id = self._match_id(url)
 663
 664         webpage = self._download_payload('wkview', post_id, {
 665             'act': 'show',
 666             'w': 'wall' + post_id,
 667         })[1]
 668
 669         description = clean_html(get_element_by_class('wall_post_text', webpage))
 670         uploader = clean_html(get_element_by_class('author', webpage))
 671
 672         entries = []
 673
 674         for audio in re.findall(r'data-audio="([^"]+)', webpage):
 675             audio = self._parse_json(unescapeHTML(audio), post_id)
 676             a = self._AUDIO._make(audio[:16])
 677             if not a.url:
 678                 continue
 679             title = unescapeHTML(a.title)
 680             performer = unescapeHTML(a.performer)
 681             entries.append({
 682                 'id': '%s_%s' % (a.owner_id, a.id),
 683                 'url': self._unmask_url(a.url, a.ads['vk_id']),
 684                 'title': '%s - %s' % (performer, title) if performer else title,
 685                 'thumbnails': [{'url': c_url} for c_url in a.cover_url.split(',')] if a.cover_url else None,
 686                 'duration': int_or_none(a.duration),
 687                 'uploader': uploader,
 688                 'artist': performer,
 689                 'track': title,
 690                 'ext': 'mp4',
 691                 'protocol': 'm3u8_native',
 692             })
 693
 694         for video in re.finditer(
 695                 r'<a[^>]+href=(["\'])(?P<url>/video(?:-?[\d_]+).*?)\1', webpage):
 696             entries.append(self.url_result(
 697                 compat_urlparse.urljoin(url, video.group('url')), VKIE.ie_key()))
 698
 699         title = 'Wall post %s' % post_id
 700
 701         return self.playlist_result(
 702             orderedSet(entries), post_id,
 703             '%s - %s' % (uploader, title) if uploader else title,
 704             description)