Generate _ value for 9anime.cloud too (#24)

9anime.cloud sometimes work without `_` parameter. Let's generate `_`, just to be safe.

README.md

@@ -5,7 +5,7 @@
 [![PyPI pyversions](https://img.shields.io/badge/python-3.3%2B-blue.svg)](https://pypi.org/project/anime-downloader/)
 [![PyPI](https://img.shields.io/pypi/v/anime-downloader.svg)](https://pypi.org/project/anime-downloader/)
 
-#### NOTE: **9anime support has been experiencing issues for the past week. Kissanime still works as expected.**
+#### NOTE: **9anime support has been experiencing issues for the past week. It might work but not 100% reliable. Kissanime still works as expected.**
 
 Ever dreamt about watching anime for free effortlessly without all those unbearable ads? Ever dreamt of downloading your favourite anime for that long trip?
 
@@ -26,7 +26,7 @@ Yeah. Me too! That's why this tool exists.
 
 <!-- [![CircleCI](https://circleci.com/gh/vn-ki/anime-downloader/tree/master.svg?style=svg)](https://circleci.com/gh/vn-ki/anime-downloader/tree/master) -->
 
-- 9anime (Temporarily not working)
+- 9anime
 - KissAnime [cloudflare]
 - KissCartoon [cloudflare]
 - Gogoanime

anime_downloader/sites/nineanime.py

@@ -23,8 +23,8 @@ class NineAnimeEpisode(BaseEpisode):
             'ts': self.ts
         }
 
-        def get_stream_url(base_url, params):
-            params['param_'] = int(generate_(params))
+        def get_stream_url(base_url, params, DD=None):
+            params['param_'] = int(generate_(params, DD=DD))
             logging.debug('API call params: {}'.format(params))
             url = base_url.format(**params)
             data = util.get_json(url)
@@ -36,12 +36,11 @@ class NineAnimeEpisode(BaseEpisode):
         except KeyError:
             try:
                 del params['param_']
-                del params['ts']
                 # I don't know if this is reliable or not.
                 # For now it works.
                 url = get_stream_url(
-                    'http://9anime.cloud/ajax/episode/info?id={id}&server={server}',
-                    params)
+                    'http://9anime.cloud/ajax/episode/info?ts={ts}&_={param_}&id={id}&server={server}',
+                    params, DD="iQDWcsGqN")
             except Exception as e:
                 raise AnimeDLError(
                     '9anime probably changed their API again. Check the issues'
@@ -178,12 +177,24 @@ def a(t, e):
     return hex(n)[2:]
 
 
-def generate_(data):
-    DD = "a29856fa"
+def a_old(t, e):
+    n = 0
+    for i in range(max(len(t), len(e))):
+        n += ord(e[i]) if i < len(e) else 0
+        n += ord(t[i]) if i < len(t) else 0
+    return hex(n)[2:]
+
+
+def generate_(data, DD=None):
+    if DD is None:
+        DD = "a29856fa"
     param_ = s(DD)
 
     for key, value in data.items():
-        trans = a(DD + key, str(value))
+        if DD is None:
+            trans = a(DD + key, str(value))
+        else:
+            trans = a_old(DD + key, str(value))
         param_ += s(trans)
 
     return param_