Raphaël G. Git Repositories - youtubedl/blob - youtube_dl/extractor/vk.py

   1 # coding: utf-8
   2 from __future__ import unicode_literals
   3
   4 import collections
   5 import functools
   6 import re
   7
   8 from .common import InfoExtractor
   9 from ..compat import compat_urlparse
  10 from ..utils import (
  11     clean_html,
  12     ExtractorError,
  13     get_element_by_class,
  14     int_or_none,
  15     OnDemandPagedList,
  16     orderedSet,
  17     str_or_none,
  18     str_to_int,
  19     unescapeHTML,
  20     unified_timestamp,
  21     url_or_none,
  22     urlencode_postdata,
  23 )
  24 from .dailymotion import DailymotionIE
  25 from .odnoklassniki import OdnoklassnikiIE
  26 from .pladform import PladformIE
  27 from .vimeo import VimeoIE
  28 from .youtube import YoutubeIE
  29
  30
  31 class VKBaseIE(InfoExtractor):
  32     _NETRC_MACHINE = 'vk'
  33
  34     def _login(self):
  35         username, password = self._get_login_info()
  36         if username is None:
  37             return
  38
  39         login_page, url_handle = self._download_webpage_handle(
  40             'https://vk.com', None, 'Downloading login page')
  41
  42         login_form = self._hidden_inputs(login_page)
  43
  44         login_form.update({
  45             'email': username.encode('cp1251'),
  46             'pass': password.encode('cp1251'),
  47         })
  48
  49         # vk serves two same remixlhk cookies in Set-Cookie header and expects
  50         # first one to be actually set
  51         self._apply_first_set_cookie_header(url_handle, 'remixlhk')
  52
  53         login_page = self._download_webpage(
  54             'https://login.vk.com/?act=login', None,
  55             note='Logging in',
  56             data=urlencode_postdata(login_form))
  57
  58         if re.search(r'onLoginFailed', login_page):
  59             raise ExtractorError(
  60                 'Unable to login, incorrect username and/or password', expected=True)
  61
  62     def _real_initialize(self):
  63         self._login()
  64
  65     def _download_payload(self, path, video_id, data, fatal=True):
  66         data['al'] = 1
  67         code, payload = self._download_json(
  68             'https://vk.com/%s.php' % path, video_id,
  69             data=urlencode_postdata(data), fatal=fatal,
  70             headers={'X-Requested-With': 'XMLHttpRequest'})['payload']
  71         if code == '3':
  72             self.raise_login_required()
  73         elif code == '8':
  74             raise ExtractorError(clean_html(payload[0][1:-1]), expected=True)
  75         return payload
  76
  77
  78 class VKIE(VKBaseIE):
  79     IE_NAME = 'vk'
  80     IE_DESC = 'VK'
  81     _VALID_URL = r'''(?x)
  82                     https?://
  83                         (?:
  84                             (?:
  85                                 (?:(?:m|new)\.)?vk\.com/video_|
  86                                 (?:www\.)?daxab.com/
  87                             )
  88                             ext\.php\?(?P<embed_query>.*?\boid=(?P<oid>-?\d+).*?\bid=(?P<id>\d+).*)|
  89                             (?:
  90                                 (?:(?:m|new)\.)?vk\.com/(?:.+?\?.*?z=)?video|
  91                                 (?:www\.)?daxab.com/embed/
  92                             )
  93                             (?P<videoid>-?\d+_\d+)(?:.*\blist=(?P<list_id>[\da-f]+))?
  94                         )
  95                     '''
  96     _TESTS = [
  97         {
  98             'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
  99             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
 100             'info_dict': {
 101                 'id': '-77521_162222515',
 102                 'ext': 'mp4',
 103                 'title': 'ProtivoGunz - Хуёвая песня',
 104                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 105                 'uploader_id': '-77521',
 106                 'duration': 195,
 107                 'timestamp': 1329049880,
 108                 'upload_date': '20120212',
 109             },
 110         },
 111         {
 112             'url': 'http://vk.com/video205387401_165548505',
 113             'info_dict': {
 114                 'id': '205387401_165548505',
 115                 'ext': 'mp4',
 116                 'title': 'No name',
 117                 'uploader': 'Tom Cruise',
 118                 'uploader_id': '205387401',
 119                 'duration': 9,
 120                 'timestamp': 1374364108,
 121                 'upload_date': '20130720',
 122             }
 123         },
 124         {
 125             'note': 'Embedded video',
 126             'url': 'https://vk.com/video_ext.php?oid=-77521&id=162222515&hash=87b046504ccd8bfa',
 127             'md5': '7babad3b85ea2e91948005b1b8b0cb84',
 128             'info_dict': {
 129                 'id': '-77521_162222515',
 130                 'ext': 'mp4',
 131                 'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
 132                 'title': 'ProtivoGunz - Хуёвая песня',
 133                 'duration': 195,
 134                 'upload_date': '20120212',
 135                 'timestamp': 1329049880,
 136                 'uploader_id': '-77521',
 137             },
 138         },
 139         {
 140             # VIDEO NOW REMOVED
 141             # please update if you find a video whose URL follows the same pattern
 142             'url': 'http://vk.com/video-8871596_164049491',
 143             'md5': 'a590bcaf3d543576c9bd162812387666',
 144             'note': 'Only available for registered users',
 145             'info_dict': {
 146                 'id': '-8871596_164049491',
 147                 'ext': 'mp4',
 148                 'uploader': 'Триллеры',
 149                 'title': '► Бойцовский клуб / Fight Club 1999 [HD 720]',
 150                 'duration': 8352,
 151                 'upload_date': '20121218',
 152                 'view_count': int,
 153             },
 154             'skip': 'Removed',
 155         },
 156         {
 157             'url': 'http://vk.com/hd_kino_mania?z=video-43215063_168067957%2F15c66b9b533119788d',
 158             'info_dict': {
 159                 'id': '-43215063_168067957',
 160                 'ext': 'mp4',
 161                 'uploader': 'Bro Mazter',
 162                 'title': ' ',
 163                 'duration': 7291,
 164                 'upload_date': '20140328',
 165                 'uploader_id': '223413403',
 166                 'timestamp': 1396018030,
 167             },
 168             'skip': 'Requires vk account credentials',
 169         },
 170         {
 171             'url': 'http://m.vk.com/video-43215063_169084319?list=125c627d1aa1cebb83&from=wall-43215063_2566540',
 172             'md5': '0c45586baa71b7cb1d0784ee3f4e00a6',
 173             'note': 'ivi.ru embed',
 174             'info_dict': {
 175                 'id': '-43215063_169084319',
 176                 'ext': 'mp4',
 177                 'title': 'Книга Илая',
 178                 'duration': 6771,
 179                 'upload_date': '20140626',
 180                 'view_count': int,
 181             },
 182             'skip': 'Removed',
 183         },
 184         {
 185             # video (removed?) only available with list id
 186             'url': 'https://vk.com/video30481095_171201961?list=8764ae2d21f14088d4',
 187             'md5': '091287af5402239a1051c37ec7b92913',
 188             'info_dict': {
 189                 'id': '30481095_171201961',
 190                 'ext': 'mp4',
 191                 'title': 'ТюменцевВВ_09.07.2015',
 192                 'uploader': 'Anton Ivanov',
 193                 'duration': 109,
 194                 'upload_date': '20150709',
 195                 'view_count': int,
 196             },
 197             'skip': 'Removed',
 198         },
 199         {
 200             # youtube embed
 201             'url': 'https://vk.com/video276849682_170681728',
 202             'info_dict': {
 203                 'id': 'V3K4mi0SYkc',
 204                 'ext': 'mp4',
 205                 'title': "DSWD Awards 'Children's Joy Foundation, Inc.' Certificate of Registration and License to Operate",
 206                 'description': 'md5:bf9c26cfa4acdfb146362682edd3827a',
 207                 'duration': 178,
 208                 'upload_date': '20130116',
 209                 'uploader': "Children's Joy Foundation Inc.",
 210                 'uploader_id': 'thecjf',
 211                 'view_count': int,
 212             },
 213         },
 214         {
 215             # dailymotion embed
 216             'url': 'https://vk.com/video-37468416_456239855',
 217             'info_dict': {
 218                 'id': 'k3lz2cmXyRuJQSjGHUv',
 219                 'ext': 'mp4',
 220                 'title': 'md5:d52606645c20b0ddbb21655adaa4f56f',
 221                 'description': 'md5:424b8e88cc873217f520e582ba28bb36',
 222                 'uploader': 'AniLibria.Tv',
 223                 'upload_date': '20160914',
 224                 'uploader_id': 'x1p5vl5',
 225                 'timestamp': 1473877246,
 226             },
 227             'params': {
 228                 'skip_download': True,
 229             },
 230         },
 231         {
 232             # video key is extra_data not url\d+
 233             'url': 'http://vk.com/video-110305615_171782105',
 234             'md5': 'e13fcda136f99764872e739d13fac1d1',
 235             'info_dict': {
 236                 'id': '-110305615_171782105',
 237                 'ext': 'mp4',
 238                 'title': 'S-Dance, репетиции к The way show',
 239                 'uploader': 'THE WAY SHOW | 17 апреля',
 240                 'uploader_id': '-110305615',
 241                 'timestamp': 1454859345,
 242                 'upload_date': '20160207',
 243             },
 244             'params': {
 245                 'skip_download': True,
 246             },
 247         },
 248         {
 249             # finished live stream, postlive_mp4
 250             'url': 'https://vk.com/videos-387766?z=video-387766_456242764%2Fpl_-387766_-2',
 251             'info_dict': {
 252                 'id': '-387766_456242764',
 253                 'ext': 'mp4',
 254                 'title': 'ИгроМир 2016 День 1 — Игромания Утром',
 255                 'uploader': 'Игромания',
 256                 'duration': 5239,
 257                 # TODO: use act=show to extract view_count
 258                 # 'view_count': int,
 259                 'upload_date': '20160929',
 260                 'uploader_id': '-387766',
 261                 'timestamp': 1475137527,
 262             },
 263             'params': {
 264                 'skip_download': True,
 265             },
 266         },
 267         {
 268             # live stream, hls and rtmp links, most likely already finished live
 269             # stream by the time you are reading this comment
 270             'url': 'https://vk.com/video-140332_456239111',
 271             'only_matching': True,
 272         },
 273         {
 274             # removed video, just testing that we match the pattern
 275             'url': 'http://vk.com/feed?z=video-43215063_166094326%2Fbb50cacd3177146d7a',
 276             'only_matching': True,
 277         },
 278         {
 279             # age restricted video, requires vk account credentials
 280             'url': 'https://vk.com/video205387401_164765225',
 281             'only_matching': True,
 282         },
 283         {
 284             # pladform embed
 285             'url': 'https://vk.com/video-76116461_171554880',
 286             'only_matching': True,
 287         },
 288         {
 289             'url': 'http://new.vk.com/video205387401_165548505',
 290             'only_matching': True,
 291         },
 292         {
 293             # This video is no longer available, because its author has been blocked.
 294             'url': 'https://vk.com/video-10639516_456240611',
 295             'only_matching': True,
 296         },
 297         {
 298             # The video is not available in your region.
 299             'url': 'https://vk.com/video-51812607_171445436',
 300             'only_matching': True,
 301         }]
 302
 303     def _real_extract(self, url):
 304         mobj = re.match(self._VALID_URL, url)
 305         video_id = mobj.group('videoid')
 306
 307         mv_data = {}
 308         if video_id:
 309             data = {
 310                 'act': 'show_inline',
 311                 'video': video_id,
 312             }
 313             # Some videos (removed?) can only be downloaded with list id specified
 314             list_id = mobj.group('list_id')
 315             if list_id:
 316                 data['list'] = list_id
 317
 318             payload = self._download_payload('al_video', video_id, data)
 319             info_page = payload[1]
 320             opts = payload[-1]
 321             mv_data = opts.get('mvData') or {}
 322             player = opts.get('player') or {}
 323         else:
 324             video_id = '%s_%s' % (mobj.group('oid'), mobj.group('id'))
 325
 326             info_page = self._download_webpage(
 327                 'http://vk.com/video_ext.php?' + mobj.group('embed_query'), video_id)
 328
 329             error_message = self._html_search_regex(
 330                 [r'(?s)<!><div[^>]+class="video_layer_message"[^>]*>(.+?)</div>',
 331                     r'(?s)<div[^>]+id="video_ext_msg"[^>]*>(.+?)</div>'],
 332                 info_page, 'error message', default=None)
 333             if error_message:
 334                 raise ExtractorError(error_message, expected=True)
 335
 336             if re.search(r'<!>/login\.php\?.*\bact=security_check', info_page):
 337                 raise ExtractorError(
 338                     'You are trying to log in from an unusual location. You should confirm ownership at vk.com to log in with this IP.',
 339                     expected=True)
 340
 341             ERROR_COPYRIGHT = 'Video %s has been removed from public access due to rightholder complaint.'
 342
 343             ERRORS = {
 344                 r'>Видеозапись .*? была изъята из публичного доступа в связи с обращением правообладателя.<':
 345                 ERROR_COPYRIGHT,
 346
 347                 r'>The video .*? was removed from public access by request of the copyright holder.<':
 348                 ERROR_COPYRIGHT,
 349
 350                 r'<!>Please log in or <':
 351                 'Video %s is only available for registered users, '
 352                 'use --username and --password options to provide account credentials.',
 353
 354                 r'<!>Unknown error':
 355                 'Video %s does not exist.',
 356
 357                 r'<!>Видео временно недоступно':
 358                 'Video %s is temporarily unavailable.',
 359
 360                 r'<!>Access denied':
 361                 'Access denied to video %s.',
 362
 363                 r'<!>Видеозапись недоступна, так как её автор был заблокирован.':
 364                 'Video %s is no longer available, because its author has been blocked.',
 365
 366                 r'<!>This video is no longer available, because its author has been blocked.':
 367                 'Video %s is no longer available, because its author has been blocked.',
 368
 369                 r'<!>This video is no longer available, because it has been deleted.':
 370                 'Video %s is no longer available, because it has been deleted.',
 371
 372                 r'<!>The video .+? is not available in your region.':
 373                 'Video %s is not available in your region.',
 374             }
 375
 376             for error_re, error_msg in ERRORS.items():
 377                 if re.search(error_re, info_page):
 378                     raise ExtractorError(error_msg % video_id, expected=True)
 379
 380             player = self._parse_json(self._search_regex(
 381                 r'var\s+playerParams\s*=\s*({.+?})\s*;\s*\n',
 382                 info_page, 'player params'), video_id)
 383
 384         youtube_url = YoutubeIE._extract_url(info_page)
 385         if youtube_url:
 386             return self.url_result(youtube_url, YoutubeIE.ie_key())
 387
 388         vimeo_url = VimeoIE._extract_url(url, info_page)
 389         if vimeo_url is not None:
 390             return self.url_result(vimeo_url, VimeoIE.ie_key())
 391
 392         pladform_url = PladformIE._extract_url(info_page)
 393         if pladform_url:
 394             return self.url_result(pladform_url, PladformIE.ie_key())
 395
 396         m_rutube = re.search(
 397             r'\ssrc="((?:https?:)?//rutube\.ru\\?/(?:video|play)\\?/embed(?:.*?))\\?"', info_page)
 398         if m_rutube is not None:
 399             rutube_url = self._proto_relative_url(
 400                 m_rutube.group(1).replace('\\', ''))
 401             return self.url_result(rutube_url)
 402
 403         dailymotion_urls = DailymotionIE._extract_urls(info_page)
 404         if dailymotion_urls:
 405             return self.url_result(dailymotion_urls[0], DailymotionIE.ie_key())
 406
 407         odnoklassniki_url = OdnoklassnikiIE._extract_url(info_page)
 408         if odnoklassniki_url:
 409             return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
 410
 411         m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
 412         if m_opts:
 413             m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
 414             if m_opts_url:
 415                 opts_url = m_opts_url.group(1)
 416                 if opts_url.startswith('//'):
 417                     opts_url = 'http:' + opts_url
 418                 return self.url_result(opts_url)
 419
 420         data = player['params'][0]
 421         title = unescapeHTML(data['md_title'])
 422
 423         # 2 = live
 424         # 3 = post live (finished live)
 425         is_live = data.get('live') == 2
 426         if is_live:
 427             title = self._live_title(title)
 428
 429         timestamp = unified_timestamp(self._html_search_regex(
 430             r'class=["\']mv_info_date[^>]+>([^<]+)(?:<|from)', info_page,
 431             'upload date', default=None)) or int_or_none(data.get('date'))
 432
 433         view_count = str_to_int(self._search_regex(
 434             r'class=["\']mv_views_count[^>]+>\s*([\d,.]+)',
 435             info_page, 'view count', default=None))
 436
 437         formats = []
 438         for format_id, format_url in data.items():
 439             format_url = url_or_none(format_url)
 440             if not format_url or not format_url.startswith(('http', '//', 'rtmp')):
 441                 continue
 442             if (format_id.startswith(('url', 'cache'))
 443                     or format_id in ('extra_data', 'live_mp4', 'postlive_mp4')):
 444                 height = int_or_none(self._search_regex(
 445                     r'^(?:url|cache)(\d+)', format_id, 'height', default=None))
 446                 formats.append({
 447                     'format_id': format_id,
 448                     'url': format_url,
 449                     'height': height,
 450                 })
 451             elif format_id == 'hls':
 452                 formats.extend(self._extract_m3u8_formats(
 453                     format_url, video_id, 'mp4', 'm3u8_native',
 454                     m3u8_id=format_id, fatal=False, live=is_live))
 455             elif format_id == 'rtmp':
 456                 formats.append({
 457                     'format_id': format_id,
 458                     'url': format_url,
 459                     'ext': 'flv',
 460                 })
 461         self._sort_formats(formats)
 462
 463         return {
 464             'id': video_id,
 465             'formats': formats,
 466             'title': title,
 467             'thumbnail': data.get('jpg'),
 468             'uploader': data.get('md_author'),
 469             'uploader_id': str_or_none(data.get('author_id') or mv_data.get('authorId')),
 470             'duration': int_or_none(data.get('duration') or mv_data.get('duration')),
 471             'timestamp': timestamp,
 472             'view_count': view_count,
 473             'like_count': int_or_none(mv_data.get('likes')),
 474             'comment_count': int_or_none(mv_data.get('commcount')),
 475             'is_live': is_live,
 476         }
 477
 478
 479 class VKUserVideosIE(VKBaseIE):
 480     IE_NAME = 'vk:uservideos'
 481     IE_DESC = "VK - User's Videos"
 482     _VALID_URL = r'https?://(?:(?:m|new)\.)?vk\.com/videos(?P<id>-?[0-9]+)(?!\?.*\bz=video)(?:[/?#&](?:.*?\bsection=(?P<section>\w+))?|$)'
 483     _TEMPLATE_URL = 'https://vk.com/videos'
 484     _TESTS = [{
 485         'url': 'https://vk.com/videos-767561',
 486         'info_dict': {
 487             'id': '-767561_all',
 488         },
 489         'playlist_mincount': 1150,
 490     }, {
 491         'url': 'https://vk.com/videos-767561?section=uploaded',
 492         'info_dict': {
 493             'id': '-767561_uploaded',
 494         },
 495         'playlist_mincount': 425,
 496     }, {
 497         'url': 'http://vk.com/videos205387401',
 498         'only_matching': True,
 499     }, {
 500         'url': 'http://vk.com/videos-77521',
 501         'only_matching': True,
 502     }, {
 503         'url': 'http://vk.com/videos-97664626?section=all',
 504         'only_matching': True,
 505     }, {
 506         'url': 'http://m.vk.com/videos205387401',
 507         'only_matching': True,
 508     }, {
 509         'url': 'http://new.vk.com/videos205387401',
 510         'only_matching': True,
 511     }]
 512     _PAGE_SIZE = 1000
 513     _VIDEO = collections.namedtuple('Video', ['owner_id', 'id'])
 514
 515     def _fetch_page(self, page_id, section, page):
 516         l = self._download_payload('al_video', page_id, {
 517             'act': 'load_videos_silent',
 518             'offset': page * self._PAGE_SIZE,
 519             'oid': page_id,
 520             'section': section,
 521         })[0][section]['list']
 522
 523         for video in l:
 524             v = self._VIDEO._make(video[:2])
 525             video_id = '%d_%d' % (v.owner_id, v.id)
 526             yield self.url_result(
 527                 'http://vk.com/video' + video_id, VKIE.ie_key(), video_id)
 528
 529     def _real_extract(self, url):
 530         page_id, section = re.match(self._VALID_URL, url).groups()
 531         if not section:
 532             section = 'all'
 533
 534         entries = OnDemandPagedList(
 535             functools.partial(self._fetch_page, page_id, section),
 536             self._PAGE_SIZE)
 537
 538         return self.playlist_result(entries, '%s_%s' % (page_id, section))
 539
 540
 541 class VKWallPostIE(VKBaseIE):
 542     IE_NAME = 'vk:wallpost'
 543     _VALID_URL = r'https?://(?:(?:(?:(?:m|new)\.)?vk\.com/(?:[^?]+\?.*\bw=)?wall(?P<id>-?\d+_\d+)))'
 544     _TESTS = [{
 545         # public page URL, audio playlist
 546         'url': 'https://vk.com/bs.official?w=wall-23538238_35',
 547         'info_dict': {
 548             'id': '-23538238_35',
 549             'title': 'Black Shadow - Wall post -23538238_35',
 550             'description': 'md5:3f84b9c4f9ef499731cf1ced9998cc0c',
 551         },
 552         'playlist': [{
 553             'md5': '5ba93864ec5b85f7ce19a9af4af080f6',
 554             'info_dict': {
 555                 'id': '135220665_111806521',
 556                 'ext': 'mp4',
 557                 'title': 'Black Shadow - Слепое Верование',
 558                 'duration': 370,
 559                 'uploader': 'Black Shadow',
 560                 'artist': 'Black Shadow',
 561                 'track': 'Слепое Верование',
 562             },
 563         }, {
 564             'md5': '4cc7e804579122b17ea95af7834c9233',
 565             'info_dict': {
 566                 'id': '135220665_111802303',
 567                 'ext': 'mp4',
 568                 'title': 'Black Shadow - Война - Негасимое Бездны Пламя!',
 569                 'duration': 423,
 570                 'uploader': 'Black Shadow',
 571                 'artist': 'Black Shadow',
 572                 'track': 'Война - Негасимое Бездны Пламя!',
 573             },
 574         }],
 575         'params': {
 576             'skip_download': True,
 577             'usenetrc': True,
 578         },
 579         'skip': 'Requires vk account credentials',
 580     }, {
 581         # single YouTube embed, no leading -
 582         'url': 'https://vk.com/wall85155021_6319',
 583         'info_dict': {
 584             'id': '85155021_6319',
 585             'title': 'Сергей Горбунов - Wall post 85155021_6319',
 586         },
 587         'playlist_count': 1,
 588         'params': {
 589             'usenetrc': True,
 590         },
 591         'skip': 'Requires vk account credentials',
 592     }, {
 593         # wall page URL
 594         'url': 'https://vk.com/wall-23538238_35',
 595         'only_matching': True,
 596     }, {
 597         # mobile wall page URL
 598         'url': 'https://m.vk.com/wall-23538238_35',
 599         'only_matching': True,
 600     }]
 601     _BASE64_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/='
 602     _AUDIO = collections.namedtuple('Audio', ['id', 'owner_id', 'url', 'title', 'performer', 'duration', 'album_id', 'unk', 'author_link', 'lyrics', 'flags', 'context', 'extra', 'hashes', 'cover_url', 'ads'])
 603
 604     def _decode(self, enc):
 605         dec = ''
 606         e = n = 0
 607         for c in enc:
 608             r = self._BASE64_CHARS.index(c)
 609             cond = n % 4
 610             e = 64 * e + r if cond else r
 611             n += 1
 612             if cond:
 613                 dec += chr(255 & e >> (-2 * n & 6))
 614         return dec
 615
 616     def _unmask_url(self, mask_url, vk_id):
 617         if 'audio_api_unavailable' in mask_url:
 618             extra = mask_url.split('?extra=')[1].split('#')
 619             func, base = self._decode(extra[1]).split(chr(11))
 620             mask_url = list(self._decode(extra[0]))
 621             url_len = len(mask_url)
 622             indexes = [None] * url_len
 623             index = int(base) ^ vk_id
 624             for n in range(url_len - 1, -1, -1):
 625                 index = (url_len * (n + 1) ^ index + n) % url_len
 626                 indexes[n] = index
 627             for n in range(1, url_len):
 628                 c = mask_url[n]
 629                 index = indexes[url_len - 1 - n]
 630                 mask_url[n] = mask_url[index]
 631                 mask_url[index] = c
 632             mask_url = ''.join(mask_url)
 633         return mask_url
 634
 635     def _real_extract(self, url):
 636         post_id = self._match_id(url)
 637
 638         webpage = self._download_payload('wkview', post_id, {
 639             'act': 'show',
 640             'w': 'wall' + post_id,
 641         })[1]
 642
 643         description = clean_html(get_element_by_class('wall_post_text', webpage))
 644         uploader = clean_html(get_element_by_class('author', webpage))
 645
 646         entries = []
 647
 648         for audio in re.findall(r'data-audio="([^"]+)', webpage):
 649             audio = self._parse_json(unescapeHTML(audio), post_id)
 650             a = self._AUDIO._make(audio[:16])
 651             if not a.url:
 652                 continue
 653             title = unescapeHTML(a.title)
 654             performer = unescapeHTML(a.performer)
 655             entries.append({
 656                 'id': '%s_%s' % (a.owner_id, a.id),
 657                 'url': self._unmask_url(a.url, a.ads['vk_id']),
 658                 'title': '%s - %s' % (performer, title) if performer else title,
 659                 'thumbnails': [{'url': c_url} for c_url in a.cover_url.split(',')] if a.cover_url else None,
 660                 'duration': int_or_none(a.duration),
 661                 'uploader': uploader,
 662                 'artist': performer,
 663                 'track': title,
 664                 'ext': 'mp4',
 665                 'protocol': 'm3u8',
 666             })
 667
 668         for video in re.finditer(
 669                 r'<a[^>]+href=(["\'])(?P<url>/video(?:-?[\d_]+).*?)\1', webpage):
 670             entries.append(self.url_result(
 671                 compat_urlparse.urljoin(url, video.group('url')), VKIE.ie_key()))
 672
 673         title = 'Wall post %s' % post_id
 674
 675         return self.playlist_result(
 676             orderedSet(entries), post_id,
 677             '%s - %s' % (uploader, title) if uploader else title,
 678             description)