]> Raphaël G. Git Repositories - youtubedl/blobdiff - youtube_dl/extractor/vk.py
d/p/skip-style-checks-for-flake8: Add metadata to please lintian.
[youtubedl] / youtube_dl / extractor / vk.py
index 90d8a6d072c7b01ab623effaa21a0a5784c3a221..00ec006c465e4f350bdc3f1099e6d38e5e2a8b8b 100644 (file)
-# encoding: utf-8
+# coding: utf-8
+from __future__ import unicode_literals
+
+import collections
+import functools
 import re
-import json
 
 from .common import InfoExtractor
+from ..compat import compat_urlparse
 from ..utils import (
-    compat_str,
+    clean_html,
+    ExtractorError,
+    get_element_by_class,
+    int_or_none,
+    OnDemandPagedList,
+    orderedSet,
+    str_or_none,
+    str_to_int,
     unescapeHTML,
+    unified_timestamp,
+    url_or_none,
+    urlencode_postdata,
 )
+from .dailymotion import DailymotionIE
+from .odnoklassniki import OdnoklassnikiIE
+from .pladform import PladformIE
+from .vimeo import VimeoIE
+from .youtube import YoutubeIE
+
+
+class VKBaseIE(InfoExtractor):
+    _NETRC_MACHINE = 'vk'
+
+    def _login(self):
+        username, password = self._get_login_info()
+        if username is None:
+            return
+
+        login_page, url_handle = self._download_webpage_handle(
+            'https://vk.com', None, 'Downloading login page')
+
+        login_form = self._hidden_inputs(login_page)
+
+        login_form.update({
+            'email': username.encode('cp1251'),
+            'pass': password.encode('cp1251'),
+        })
+
+        # vk serves two same remixlhk cookies in Set-Cookie header and expects
+        # first one to be actually set
+        self._apply_first_set_cookie_header(url_handle, 'remixlhk')
+
+        login_page = self._download_webpage(
+            'https://login.vk.com/?act=login', None,
+            note='Logging in',
+            data=urlencode_postdata(login_form))
+
+        if re.search(r'onLoginFailed', login_page):
+            raise ExtractorError(
+                'Unable to login, incorrect username and/or password', expected=True)
+
+    def _real_initialize(self):
+        self._login()
 
+    def _download_payload(self, path, video_id, data, fatal=True):
+        data['al'] = 1
+        code, payload = self._download_json(
+            'https://vk.com/%s.php' % path, video_id,
+            data=urlencode_postdata(data), fatal=fatal,
+            headers={'X-Requested-With': 'XMLHttpRequest'})['payload']
+        if code == '3':
+            self.raise_login_required()
+        elif code == '8':
+            raise ExtractorError(clean_html(payload[0][1:-1]), expected=True)
+        return payload
 
-class VKIE(InfoExtractor):
-    IE_NAME = u'vk.com'
-    _VALID_URL = r'https?://vk\.com/(?:videos.*?\?.*?z=)?video(?P<id>.*?)(?:\?|%2F|$)'
 
-    _TEST = {
-        u'url': u'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
-        u'md5': u'0deae91935c54e00003c2a00646315f0',
-        u'info_dict': {
-            u'id': u'162222515',
-            u'ext': u'flv',
-            u'title': u'ProtivoGunz - Хуёвая песня',
-            u'uploader': u'Noize MC',
+class VKIE(VKBaseIE):
+    IE_NAME = 'vk'
+    IE_DESC = 'VK'
+    _VALID_URL = r'''(?x)
+                    https?://
+                        (?:
+                            (?:
+                                (?:(?:m|new)\.)?vk\.com/video_|
+                                (?:www\.)?daxab.com/
+                            )
+                            ext\.php\?(?P<embed_query>.*?\boid=(?P<oid>-?\d+).*?\bid=(?P<id>\d+).*)|
+                            (?:
+                                (?:(?:m|new)\.)?vk\.com/(?:.+?\?.*?z=)?video|
+                                (?:www\.)?daxab.com/embed/
+                            )
+                            (?P<videoid>-?\d+_\d+)(?:.*\blist=(?P<list_id>[\da-f]+))?
+                        )
+                    '''
+    _TESTS = [
+        {
+            'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
+            'md5': '7babad3b85ea2e91948005b1b8b0cb84',
+            'info_dict': {
+                'id': '-77521_162222515',
+                'ext': 'mp4',
+                'title': 'ProtivoGunz - Хуёвая песня',
+                'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
+                'uploader_id': '-77521',
+                'duration': 195,
+                'timestamp': 1329049880,
+                'upload_date': '20120212',
+            },
+        },
+        {
+            'url': 'http://vk.com/video205387401_165548505',
+            'info_dict': {
+                'id': '205387401_165548505',
+                'ext': 'mp4',
+                'title': 'No name',
+                'uploader': 'Tom Cruise',
+                'uploader_id': '205387401',
+                'duration': 9,
+                'timestamp': 1374364108,
+                'upload_date': '20130720',
+            }
+        },
+        {
+            'note': 'Embedded video',
+            'url': 'https://vk.com/video_ext.php?oid=-77521&id=162222515&hash=87b046504ccd8bfa',
+            'md5': '7babad3b85ea2e91948005b1b8b0cb84',
+            'info_dict': {
+                'id': '-77521_162222515',
+                'ext': 'mp4',
+                'uploader': 're:(?:Noize MC|Alexander Ilyashenko).*',
+                'title': 'ProtivoGunz - Хуёвая песня',
+                'duration': 195,
+                'upload_date': '20120212',
+                'timestamp': 1329049880,
+                'uploader_id': '-77521',
+            },
+        },
+        {
+            # VIDEO NOW REMOVED
+            # please update if you find a video whose URL follows the same pattern
+            'url': 'http://vk.com/video-8871596_164049491',
+            'md5': 'a590bcaf3d543576c9bd162812387666',
+            'note': 'Only available for registered users',
+            'info_dict': {
+                'id': '-8871596_164049491',
+                'ext': 'mp4',
+                'uploader': 'Триллеры',
+                'title': '► Бойцовский клуб / Fight Club 1999 [HD 720]',
+                'duration': 8352,
+                'upload_date': '20121218',
+                'view_count': int,
+            },
+            'skip': 'Removed',
+        },
+        {
+            'url': 'http://vk.com/hd_kino_mania?z=video-43215063_168067957%2F15c66b9b533119788d',
+            'info_dict': {
+                'id': '-43215063_168067957',
+                'ext': 'mp4',
+                'uploader': 'Bro Mazter',
+                'title': ' ',
+                'duration': 7291,
+                'upload_date': '20140328',
+                'uploader_id': '223413403',
+                'timestamp': 1396018030,
+            },
+            'skip': 'Requires vk account credentials',
+        },
+        {
+            'url': 'http://m.vk.com/video-43215063_169084319?list=125c627d1aa1cebb83&from=wall-43215063_2566540',
+            'md5': '0c45586baa71b7cb1d0784ee3f4e00a6',
+            'note': 'ivi.ru embed',
+            'info_dict': {
+                'id': '-43215063_169084319',
+                'ext': 'mp4',
+                'title': 'Книга Илая',
+                'duration': 6771,
+                'upload_date': '20140626',
+                'view_count': int,
+            },
+            'skip': 'Removed',
+        },
+        {
+            # video (removed?) only available with list id
+            'url': 'https://vk.com/video30481095_171201961?list=8764ae2d21f14088d4',
+            'md5': '091287af5402239a1051c37ec7b92913',
+            'info_dict': {
+                'id': '30481095_171201961',
+                'ext': 'mp4',
+                'title': 'ТюменцевВВ_09.07.2015',
+                'uploader': 'Anton Ivanov',
+                'duration': 109,
+                'upload_date': '20150709',
+                'view_count': int,
+            },
+            'skip': 'Removed',
+        },
+        {
+            # youtube embed
+            'url': 'https://vk.com/video276849682_170681728',
+            'info_dict': {
+                'id': 'V3K4mi0SYkc',
+                'ext': 'mp4',
+                'title': "DSWD Awards 'Children's Joy Foundation, Inc.' Certificate of Registration and License to Operate",
+                'description': 'md5:bf9c26cfa4acdfb146362682edd3827a',
+                'duration': 178,
+                'upload_date': '20130116',
+                'uploader': "Children's Joy Foundation Inc.",
+                'uploader_id': 'thecjf',
+                'view_count': int,
+            },
+        },
+        {
+            # dailymotion embed
+            'url': 'https://vk.com/video-37468416_456239855',
+            'info_dict': {
+                'id': 'k3lz2cmXyRuJQSjGHUv',
+                'ext': 'mp4',
+                'title': 'md5:d52606645c20b0ddbb21655adaa4f56f',
+                'description': 'md5:424b8e88cc873217f520e582ba28bb36',
+                'uploader': 'AniLibria.Tv',
+                'upload_date': '20160914',
+                'uploader_id': 'x1p5vl5',
+                'timestamp': 1473877246,
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # video key is extra_data not url\d+
+            'url': 'http://vk.com/video-110305615_171782105',
+            'md5': 'e13fcda136f99764872e739d13fac1d1',
+            'info_dict': {
+                'id': '-110305615_171782105',
+                'ext': 'mp4',
+                'title': 'S-Dance, репетиции к The way show',
+                'uploader': 'THE WAY SHOW | 17 апреля',
+                'uploader_id': '-110305615',
+                'timestamp': 1454859345,
+                'upload_date': '20160207',
+            },
+            'params': {
+                'skip_download': True,
+            },
+        },
+        {
+            # finished live stream, postlive_mp4
+            'url': 'https://vk.com/videos-387766?z=video-387766_456242764%2Fpl_-387766_-2',
+            'info_dict': {
+                'id': '-387766_456242764',
+                'ext': 'mp4',
+                'title': 'ИгроМир 2016 День 1 — Игромания Утром',
+                'uploader': 'Игромания',
+                'duration': 5239,
+                # TODO: use act=show to extract view_count
+                # 'view_count': int,
+                'upload_date': '20160929',
+                'uploader_id': '-387766',
+                'timestamp': 1475137527,
+            },
+            'params': {
+                'skip_download': True,
+            },
         },
-    }
+        {
+            # live stream, hls and rtmp links, most likely already finished live
+            # stream by the time you are reading this comment
+            'url': 'https://vk.com/video-140332_456239111',
+            'only_matching': True,
+        },
+        {
+            # removed video, just testing that we match the pattern
+            'url': 'http://vk.com/feed?z=video-43215063_166094326%2Fbb50cacd3177146d7a',
+            'only_matching': True,
+        },
+        {
+            # age restricted video, requires vk account credentials
+            'url': 'https://vk.com/video205387401_164765225',
+            'only_matching': True,
+        },
+        {
+            # pladform embed
+            'url': 'https://vk.com/video-76116461_171554880',
+            'only_matching': True,
+        },
+        {
+            'url': 'http://new.vk.com/video205387401_165548505',
+            'only_matching': True,
+        },
+        {
+            # This video is no longer available, because its author has been blocked.
+            'url': 'https://vk.com/video-10639516_456240611',
+            'only_matching': True,
+        },
+        {
+            # The video is not available in your region.
+            'url': 'https://vk.com/video-51812607_171445436',
+            'only_matching': True,
+        }]
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
-        video_id = mobj.group('id')
-        info_url = 'http://vk.com/al_video.php?act=show&al=1&video=%s' % video_id
-        info_page = self._download_webpage(info_url, video_id)
-        m_yt = re.search(r'src="(http://www.youtube.com/.*?)"', info_page)
-        if m_yt is not None:
-            self.to_screen(u'Youtube video detected')
-            return self.url_result(m_yt.group(1), 'Youtube')
-        vars_json = self._search_regex(r'var vars = ({.*?});', info_page, u'vars')
-        vars = json.loads(vars_json)
+        video_id = mobj.group('videoid')
+
+        mv_data = {}
+        if video_id:
+            data = {
+                'act': 'show_inline',
+                'video': video_id,
+            }
+            # Some videos (removed?) can only be downloaded with list id specified
+            list_id = mobj.group('list_id')
+            if list_id:
+                data['list'] = list_id
+
+            payload = self._download_payload('al_video', video_id, data)
+            info_page = payload[1]
+            opts = payload[-1]
+            mv_data = opts.get('mvData') or {}
+            player = opts.get('player') or {}
+        else:
+            video_id = '%s_%s' % (mobj.group('oid'), mobj.group('id'))
+
+            info_page = self._download_webpage(
+                'http://vk.com/video_ext.php?' + mobj.group('embed_query'), video_id)
+
+            error_message = self._html_search_regex(
+                [r'(?s)<!><div[^>]+class="video_layer_message"[^>]*>(.+?)</div>',
+                    r'(?s)<div[^>]+id="video_ext_msg"[^>]*>(.+?)</div>'],
+                info_page, 'error message', default=None)
+            if error_message:
+                raise ExtractorError(error_message, expected=True)
+
+            if re.search(r'<!>/login\.php\?.*\bact=security_check', info_page):
+                raise ExtractorError(
+                    'You are trying to log in from an unusual location. You should confirm ownership at vk.com to log in with this IP.',
+                    expected=True)
+
+            ERROR_COPYRIGHT = 'Video %s has been removed from public access due to rightholder complaint.'
+
+            ERRORS = {
+                r'>Видеозапись .*? была изъята из публичного доступа в связи с обращением правообладателя.<':
+                ERROR_COPYRIGHT,
+
+                r'>The video .*? was removed from public access by request of the copyright holder.<':
+                ERROR_COPYRIGHT,
+
+                r'<!>Please log in or <':
+                'Video %s is only available for registered users, '
+                'use --username and --password options to provide account credentials.',
+
+                r'<!>Unknown error':
+                'Video %s does not exist.',
+
+                r'<!>Видео временно недоступно':
+                'Video %s is temporarily unavailable.',
+
+                r'<!>Access denied':
+                'Access denied to video %s.',
+
+                r'<!>Видеозапись недоступна, так как её автор был заблокирован.':
+                'Video %s is no longer available, because its author has been blocked.',
+
+                r'<!>This video is no longer available, because its author has been blocked.':
+                'Video %s is no longer available, because its author has been blocked.',
+
+                r'<!>This video is no longer available, because it has been deleted.':
+                'Video %s is no longer available, because it has been deleted.',
+
+                r'<!>The video .+? is not available in your region.':
+                'Video %s is not available in your region.',
+            }
+
+            for error_re, error_msg in ERRORS.items():
+                if re.search(error_re, info_page):
+                    raise ExtractorError(error_msg % video_id, expected=True)
+
+            player = self._parse_json(self._search_regex(
+                r'var\s+playerParams\s*=\s*({.+?})\s*;\s*\n',
+                info_page, 'player params'), video_id)
+
+        youtube_url = YoutubeIE._extract_url(info_page)
+        if youtube_url:
+            return self.url_result(youtube_url, YoutubeIE.ie_key())
+
+        vimeo_url = VimeoIE._extract_url(url, info_page)
+        if vimeo_url is not None:
+            return self.url_result(vimeo_url, VimeoIE.ie_key())
+
+        pladform_url = PladformIE._extract_url(info_page)
+        if pladform_url:
+            return self.url_result(pladform_url, PladformIE.ie_key())
+
+        m_rutube = re.search(
+            r'\ssrc="((?:https?:)?//rutube\.ru\\?/(?:video|play)\\?/embed(?:.*?))\\?"', info_page)
+        if m_rutube is not None:
+            rutube_url = self._proto_relative_url(
+                m_rutube.group(1).replace('\\', ''))
+            return self.url_result(rutube_url)
+
+        dailymotion_urls = DailymotionIE._extract_urls(info_page)
+        if dailymotion_urls:
+            return self.url_result(dailymotion_urls[0], DailymotionIE.ie_key())
+
+        odnoklassniki_url = OdnoklassnikiIE._extract_url(info_page)
+        if odnoklassniki_url:
+            return self.url_result(odnoklassniki_url, OdnoklassnikiIE.ie_key())
+
+        m_opts = re.search(r'(?s)var\s+opts\s*=\s*({.+?});', info_page)
+        if m_opts:
+            m_opts_url = re.search(r"url\s*:\s*'((?!/\b)[^']+)", m_opts.group(1))
+            if m_opts_url:
+                opts_url = m_opts_url.group(1)
+                if opts_url.startswith('//'):
+                    opts_url = 'http:' + opts_url
+                return self.url_result(opts_url)
+
+        data = player['params'][0]
+        title = unescapeHTML(data['md_title'])
+
+        # 2 = live
+        # 3 = post live (finished live)
+        is_live = data.get('live') == 2
+        if is_live:
+            title = self._live_title(title)
+
+        timestamp = unified_timestamp(self._html_search_regex(
+            r'class=["\']mv_info_date[^>]+>([^<]+)(?:<|from)', info_page,
+            'upload date', default=None)) or int_or_none(data.get('date'))
+
+        view_count = str_to_int(self._search_regex(
+            r'class=["\']mv_views_count[^>]+>\s*([\d,.]+)',
+            info_page, 'view count', default=None))
+
+        formats = []
+        for format_id, format_url in data.items():
+            format_url = url_or_none(format_url)
+            if not format_url or not format_url.startswith(('http', '//', 'rtmp')):
+                continue
+            if (format_id.startswith(('url', 'cache'))
+                    or format_id in ('extra_data', 'live_mp4', 'postlive_mp4')):
+                height = int_or_none(self._search_regex(
+                    r'^(?:url|cache)(\d+)', format_id, 'height', default=None))
+                formats.append({
+                    'format_id': format_id,
+                    'url': format_url,
+                    'height': height,
+                })
+            elif format_id == 'hls':
+                formats.extend(self._extract_m3u8_formats(
+                    format_url, video_id, 'mp4', 'm3u8_native',
+                    m3u8_id=format_id, fatal=False, live=is_live))
+            elif format_id == 'rtmp':
+                formats.append({
+                    'format_id': format_id,
+                    'url': format_url,
+                    'ext': 'flv',
+                })
+        self._sort_formats(formats)
 
         return {
-            'id': compat_str(vars['vid']),
-            'url': vars['url240'],
-            'title': unescapeHTML(vars['md_title']),
-            'thumbnail': vars['jpg'],
-            'uploader': vars['md_author'],
+            'id': video_id,
+            'formats': formats,
+            'title': title,
+            'thumbnail': data.get('jpg'),
+            'uploader': data.get('md_author'),
+            'uploader_id': str_or_none(data.get('author_id') or mv_data.get('authorId')),
+            'duration': int_or_none(data.get('duration') or mv_data.get('duration')),
+            'timestamp': timestamp,
+            'view_count': view_count,
+            'like_count': int_or_none(mv_data.get('likes')),
+            'comment_count': int_or_none(mv_data.get('commcount')),
+            'is_live': is_live,
         }
+
+
+class VKUserVideosIE(VKBaseIE):
+    IE_NAME = 'vk:uservideos'
+    IE_DESC = "VK - User's Videos"
+    _VALID_URL = r'https?://(?:(?:m|new)\.)?vk\.com/videos(?P<id>-?[0-9]+)(?!\?.*\bz=video)(?:[/?#&](?:.*?\bsection=(?P<section>\w+))?|$)'
+    _TEMPLATE_URL = 'https://vk.com/videos'
+    _TESTS = [{
+        'url': 'https://vk.com/videos-767561',
+        'info_dict': {
+            'id': '-767561_all',
+        },
+        'playlist_mincount': 1150,
+    }, {
+        'url': 'https://vk.com/videos-767561?section=uploaded',
+        'info_dict': {
+            'id': '-767561_uploaded',
+        },
+        'playlist_mincount': 425,
+    }, {
+        'url': 'http://vk.com/videos205387401',
+        'only_matching': True,
+    }, {
+        'url': 'http://vk.com/videos-77521',
+        'only_matching': True,
+    }, {
+        'url': 'http://vk.com/videos-97664626?section=all',
+        'only_matching': True,
+    }, {
+        'url': 'http://m.vk.com/videos205387401',
+        'only_matching': True,
+    }, {
+        'url': 'http://new.vk.com/videos205387401',
+        'only_matching': True,
+    }]
+    _PAGE_SIZE = 1000
+    _VIDEO = collections.namedtuple('Video', ['owner_id', 'id'])
+
+    def _fetch_page(self, page_id, section, page):
+        l = self._download_payload('al_video', page_id, {
+            'act': 'load_videos_silent',
+            'offset': page * self._PAGE_SIZE,
+            'oid': page_id,
+            'section': section,
+        })[0][section]['list']
+
+        for video in l:
+            v = self._VIDEO._make(video[:2])
+            video_id = '%d_%d' % (v.owner_id, v.id)
+            yield self.url_result(
+                'http://vk.com/video' + video_id, VKIE.ie_key(), video_id)
+
+    def _real_extract(self, url):
+        page_id, section = re.match(self._VALID_URL, url).groups()
+        if not section:
+            section = 'all'
+
+        entries = OnDemandPagedList(
+            functools.partial(self._fetch_page, page_id, section),
+            self._PAGE_SIZE)
+
+        return self.playlist_result(entries, '%s_%s' % (page_id, section))
+
+
+class VKWallPostIE(VKBaseIE):
+    IE_NAME = 'vk:wallpost'
+    _VALID_URL = r'https?://(?:(?:(?:(?:m|new)\.)?vk\.com/(?:[^?]+\?.*\bw=)?wall(?P<id>-?\d+_\d+)))'
+    _TESTS = [{
+        # public page URL, audio playlist
+        'url': 'https://vk.com/bs.official?w=wall-23538238_35',
+        'info_dict': {
+            'id': '-23538238_35',
+            'title': 'Black Shadow - Wall post -23538238_35',
+            'description': 'md5:3f84b9c4f9ef499731cf1ced9998cc0c',
+        },
+        'playlist': [{
+            'md5': '5ba93864ec5b85f7ce19a9af4af080f6',
+            'info_dict': {
+                'id': '135220665_111806521',
+                'ext': 'mp4',
+                'title': 'Black Shadow - Слепое Верование',
+                'duration': 370,
+                'uploader': 'Black Shadow',
+                'artist': 'Black Shadow',
+                'track': 'Слепое Верование',
+            },
+        }, {
+            'md5': '4cc7e804579122b17ea95af7834c9233',
+            'info_dict': {
+                'id': '135220665_111802303',
+                'ext': 'mp4',
+                'title': 'Black Shadow - Война - Негасимое Бездны Пламя!',
+                'duration': 423,
+                'uploader': 'Black Shadow',
+                'artist': 'Black Shadow',
+                'track': 'Война - Негасимое Бездны Пламя!',
+            },
+        }],
+        'params': {
+            'skip_download': True,
+            'usenetrc': True,
+        },
+        'skip': 'Requires vk account credentials',
+    }, {
+        # single YouTube embed, no leading -
+        'url': 'https://vk.com/wall85155021_6319',
+        'info_dict': {
+            'id': '85155021_6319',
+            'title': 'Сергей Горбунов - Wall post 85155021_6319',
+        },
+        'playlist_count': 1,
+        'params': {
+            'usenetrc': True,
+        },
+        'skip': 'Requires vk account credentials',
+    }, {
+        # wall page URL
+        'url': 'https://vk.com/wall-23538238_35',
+        'only_matching': True,
+    }, {
+        # mobile wall page URL
+        'url': 'https://m.vk.com/wall-23538238_35',
+        'only_matching': True,
+    }]
+    _BASE64_CHARS = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMN0PQRSTUVWXYZO123456789+/='
+    _AUDIO = collections.namedtuple('Audio', ['id', 'owner_id', 'url', 'title', 'performer', 'duration', 'album_id', 'unk', 'author_link', 'lyrics', 'flags', 'context', 'extra', 'hashes', 'cover_url', 'ads'])
+
+    def _decode(self, enc):
+        dec = ''
+        e = n = 0
+        for c in enc:
+            r = self._BASE64_CHARS.index(c)
+            cond = n % 4
+            e = 64 * e + r if cond else r
+            n += 1
+            if cond:
+                dec += chr(255 & e >> (-2 * n & 6))
+        return dec
+
+    def _unmask_url(self, mask_url, vk_id):
+        if 'audio_api_unavailable' in mask_url:
+            extra = mask_url.split('?extra=')[1].split('#')
+            func, base = self._decode(extra[1]).split(chr(11))
+            mask_url = list(self._decode(extra[0]))
+            url_len = len(mask_url)
+            indexes = [None] * url_len
+            index = int(base) ^ vk_id
+            for n in range(url_len - 1, -1, -1):
+                index = (url_len * (n + 1) ^ index + n) % url_len
+                indexes[n] = index
+            for n in range(1, url_len):
+                c = mask_url[n]
+                index = indexes[url_len - 1 - n]
+                mask_url[n] = mask_url[index]
+                mask_url[index] = c
+            mask_url = ''.join(mask_url)
+        return mask_url
+
+    def _real_extract(self, url):
+        post_id = self._match_id(url)
+
+        webpage = self._download_payload('wkview', post_id, {
+            'act': 'show',
+            'w': 'wall' + post_id,
+        })[1]
+
+        description = clean_html(get_element_by_class('wall_post_text', webpage))
+        uploader = clean_html(get_element_by_class('author', webpage))
+
+        entries = []
+
+        for audio in re.findall(r'data-audio="([^"]+)', webpage):
+            audio = self._parse_json(unescapeHTML(audio), post_id)
+            a = self._AUDIO._make(audio[:16])
+            if not a.url:
+                continue
+            title = unescapeHTML(a.title)
+            performer = unescapeHTML(a.performer)
+            entries.append({
+                'id': '%s_%s' % (a.owner_id, a.id),
+                'url': self._unmask_url(a.url, a.ads['vk_id']),
+                'title': '%s - %s' % (performer, title) if performer else title,
+                'thumbnails': [{'url': c_url} for c_url in a.cover_url.split(',')] if a.cover_url else None,
+                'duration': int_or_none(a.duration),
+                'uploader': uploader,
+                'artist': performer,
+                'track': title,
+                'ext': 'mp4',
+                'protocol': 'm3u8',
+            })
+
+        for video in re.finditer(
+                r'<a[^>]+href=(["\'])(?P<url>/video(?:-?[\d_]+).*?)\1', webpage):
+            entries.append(self.url_result(
+                compat_urlparse.urljoin(url, video.group('url')), VKIE.ie_key()))
+
+        title = 'Wall post %s' % post_id
+
+        return self.playlist_result(
+            orderedSet(entries), post_id,
+            '%s - %s' % (uploader, title) if uploader else title,
+            description)