From 226b886ca85b5843d2cb9638fb6d88223e9dd5b2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergey=20M=E2=80=A4?= <dstftw@gmail.com>
Date: Sat, 27 Jun 2015 14:04:55 +0600
Subject: [PATCH] [vk] Fix authentication (Closes #6105)

---
 youtube_dl/extractor/vk.py | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/youtube_dl/extractor/vk.py b/youtube_dl/extractor/vk.py
index 38ff3c1a9..f2ae109f9 100644
--- a/youtube_dl/extractor/vk.py
+++ b/youtube_dl/extractor/vk.py
@@ -121,20 +121,27 @@ def _login(self):
         if username is None:
             return
 
-        login_form = {
-            'act': 'login',
-            'role': 'al_frame',
-            'expire': '1',
+        login_page = self._download_webpage(
+            'https://vk.com', None, 'Downloading login page')
+
+        login_form = dict(re.findall(
+            r'<input\s+type="hidden"\s+name="([^"]+)"\s+(?:id="[^"]+"\s+)?value="([^"]*)"',
+            login_page))
+
+        login_form.update({
             'email': username.encode('cp1251'),
             'pass': password.encode('cp1251'),
-        }
+        })
 
-        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)
+        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)
+            raise ExtractorError(
+                'Unable to login, incorrect username and/or password', expected=True)
 
     def _real_initialize(self):
         self._login()