YoutubeIE: new algo for length 86 (fixes #1156)

Now is using the same length as the flash player used for age protected videos, but the algorithm is different, so now for age protected videos it first tries to use the old algo.

diff --git a/devscripts/youtube_genalgo.py b/devscripts/youtube_genalgo.py
index 22977ccd90fb0e26fd49d572a9b9b2fc36e31373..fd0120650657edb93c5d5f6178907b19811311ab 100644 (file)
--- a/devscripts/youtube_genalgo.py
+++ b/devscripts/youtube_genalgo.py
@@ -17,9 +17,9 @@ tests = [
     # 87 - vflART1Nf 2013/07/24
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$^&*()_-+={[]}|:;?/>.<",
      "tyuioplkjhgfdsazxcv<nm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$^&*()_-+={[]}|:;?/>"),
-    # 86 - vfl_ymO4Z 2013/06/27
+    # 86 - vflm_D8eE 2013/07/31
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<",
-     "ertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!/#$%^&*()_-+={[|};?@"),
+     ">.1}|[{=+-_)(*&^%$#@!MNBVCXZASDFGHJK<POIUYTREW509876L432/mnbvcxzasdfghjklpoiuytre"),
     # 85 - vflSAFCP9 2013/07/19
     ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[};?/>.<",
      "ertyuiqplkjhgfdsazx$vbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#<%^&*()_-+={[};?/c"),
@@ -40,6 +40,12 @@ tests = [
      "Z?;}[{=+-(*&^%$#@!MNBVCXRASDFGHKLPOIUYT/EWQ0q87659321mnbvcxzasdfghjkl4oiuytrewp"),
 ]
 
+tests_age_gate = [
+    # 86 - vflqinMWD
+    ("qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<",
+     "ertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!/#$%^&*()_-+={[|};?@"),
+]
+
 def find_matching(wrong, right):
     idxs = [wrong.index(c) for c in right]
     return compress(idxs)
@@ -90,6 +96,8 @@ def genall(tests):
 
 def main():
     print(genall(tests))
+    print(u'    Age gate:')
+    print(genall(tests_age_gate))
 
 if __name__ == '__main__':
     main()

diff --git a/test/test_youtube_sig.py b/test/test_youtube_sig.py
index 4d45a0e08cfdd15906460c2285e70ec256a7e58e..d06f3c8aa5a33969dad3ac1e6ef8d378a36399c3 100644 (file)
--- a/test/test_youtube_sig.py
+++ b/test/test_youtube_sig.py
@@ -10,7 +10,9 @@ sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 from youtube_dl.extractor.youtube import YoutubeIE
 from helper import FakeYDL
 
-sig = YoutubeIE(FakeYDL())._decrypt_signature
+ie = YoutubeIE(FakeYDL())
+sig = ie._decrypt_signature
+sig_age_gate = ie._decrypt_signature_age_gate
 
 class TestYoutubeSig(unittest.TestCase):
     def test_92(self):
@@ -35,7 +37,7 @@ class TestYoutubeSig(unittest.TestCase):
 
     def test_86(self):
         wrong = "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<"
-        right = "ertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!/#$%^&*()_-+={[|};?@"
+        right = ">.1}|[{=+-_)(*&^%$#@!MNBVCXZASDFGHJK<POIUYTREW509876L432/mnbvcxzasdfghjklpoiuytre"
         self.assertEqual(sig(wrong), right)
 
     def test_85(self):
@@ -67,6 +69,11 @@ class TestYoutubeSig(unittest.TestCase):
         wrong = "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKHGFDSAZXCVBNM!@#$%^&*(-+={[};?/"
         right = "Z?;}[{=+-(*&^%$#@!MNBVCXRASDFGHKLPOIUYT/EWQ0q87659321mnbvcxzasdfghjkl4oiuytrewp"
         self.assertEqual(sig(wrong), right)
+    
+    def test_86_age_gate(self):
+        wrong = "qwertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!@#$%^&*()_-+={[|};?/>.<"
+        right = "ertyuioplkjhgfdsazxcvbnm1234567890QWERTYUIOPLKJHGFDSAZXCVBNM!/#$%^&*()_-+={[|};?@"
+        self.assertEqual(sig_age_gate(wrong), right)
 
 if __name__ == '__main__':
     unittest.main()

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index f10f2e3dd96fb8e32966e2cdcde7b821fe81ff6b..ba8fdfdf2e998d9a73ca25246ec1fcac97b2faa9 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -286,7 +286,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         elif len(s) == 87:
             return s[4:23] + s[86] + s[24:85]
         elif len(s) == 86:
-            return s[2:63] + s[82] + s[64:82] + s[63]
+            return s[83:85] + s[26] + s[79:46:-1] + s[85] + s[45:36:-1] + s[30] + s[35:30:-1] + s[46] + s[29:26:-1] + s[82] + s[25:1:-1]
         elif len(s) == 85:
             return s[2:8] + s[0] + s[9:21] + s[65] + s[22:65] + s[84] + s[66:82] + s[21]
         elif len(s) == 84:
@@ -303,6 +303,16 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
         else:
             raise ExtractorError(u'Unable to decrypt signature, key length %d not supported; retrying might work' % (len(s)))
 
+    def _decrypt_signature_age_gate(self, s):
+        # The videos with age protection use another player, so the algorithms
+        # can be different.
+        if len(s) == 86:
+            return s[2:63] + s[82] + s[64:82] + s[63]
+        else:
+            # Fallback to the other algortihms
+            self._decrypt_signature(s)
+
+
     def _get_available_subtitles(self, video_id):
         self.report_video_subtitles_download(video_id)
         request = compat_urllib_request.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id)
@@ -611,7 +621,11 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                             parts_sizes = u'.'.join(compat_str(len(part)) for part in s.split('.'))
                             self.to_screen(u'encrypted signature length %d (%s), itag %s, %s' %
                                 (len(s), parts_sizes, url_data['itag'][0], player))
-                        signature = self._decrypt_signature(url_data['s'][0])
+                        encrypted_sig = url_data['s'][0]
+                        if age_gate:
+                            signature = self._decrypt_signature_age_gate(encrypted_sig)
+                        else:
+                            signature = self._decrypt_signature(encrypted_sig)
                         url += '&signature=' + signature
                     if 'ratebypass' not in url:
                         url += '&ratebypass=yes'