[vk] Add login feature (Closes #2206)

youtube_dl/extractor/vk.py

@@ -6,6 +6,9 @@
 
 from .common import InfoExtractor
 from ..utils import (
+    ExtractorError,
+    compat_urllib_request,
+    compat_urllib_parse,
     compat_str,
     unescapeHTML,
 )
@@ -15,30 +18,78 @@ class VKIE(InfoExtractor):
     IE_NAME = 'vk.com'
     _VALID_URL = r'https?://vk\.com/(?:videos.*?\?.*?z=)?video(?P<id>.*?)(?:\?|%2F|$)'
 
-    _TESTS = [{
+    _TESTS = [
+        {
             'url': 'http://vk.com/videos-77521?z=video-77521_162222515%2Fclub77521',
-        'file': '162222515.flv',
             'md5': '0deae91935c54e00003c2a00646315f0',
             'info_dict': {
+                'id': '162222515',
+                'ext': 'flv',
                 'title': 'ProtivoGunz - Хуёвая песня',
                 'uploader': 'Noize MC',
+                'duration': 195,
             },
         },
         {
             'url': 'http://vk.com/video4643923_163339118',
-        'file': '163339118.mp4',
             'md5': 'f79bccb5cd182b1f43502ca5685b2b36',
             'info_dict': {
+                'id': '163339118',
+                'ext': 'mp4',
                 'uploader': 'Elvira Dzhonik',
                 'title': 'Dream Theater - Hollow Years Live at Budokan 720*',
+                'duration': 558,
             }
-    }]
+        },
+        {
+            'url': 'http://vk.com/video-8871596_164049491',
+            'md5': 'a590bcaf3d543576c9bd162812387666',
+            'note': 'Only available for registered users',
+            'info_dict': {
+                'id': '164049491',
+                'ext': 'mp4',
+                'uploader': 'Триллеры',
+                'title': '► Бойцовский клуб / Fight Club 1999 [HD 720]\u00a0',
+                'duration': 8352,
+            },
+            'skip': 'Requires vk account credentials',
+        }
+    ]
+
+    def _login(self):
+        (username, password) = self._get_login_info()
+        if username is None:
+            return
+
+        login_form = {
+            'act': 'login',
+            'role': 'al_frame',
+            'expire': '1',
+            'email': username,
+            'pass': password,
+        }
+
+        request = compat_urllib_request.Request('https://login.vk.com/?act=login',
+            compat_urllib_parse.urlencode(login_form).encode('utf-8'))
+        login_page = self._download_webpage(request, None, note='Logging in as %s' % username)
+
+        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 _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)
+
+        if re.search(r'<!>Please log in or <', info_page):
+            raise ExtractorError('This video is only available for registered users, '
+                'use --username and --password options to provide account credentials.', expected=True)
+
         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')
@@ -60,4 +111,5 @@ def _real_extract(self, url):
             'title': unescapeHTML(data['md_title']),
             'thumbnail': data.get('jpg'),
             'uploader': data.get('md_author'),
+            'duration': data.get('duration')
         }