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Merge branch 'ustream-embed-recorded2' of https://github.com/anovicecodemonkey/youtub...
[youtube-dl] / youtube_dl / extractor / crunchyroll.py
1 # encoding: utf-8
2 from __future__ import unicode_literals
3
4 import re
5 import json
6 import base64
7 import zlib
8
9 from hashlib import sha1
10 from math import pow, sqrt, floor
11 from .common import InfoExtractor
12 from ..utils import (
13     ExtractorError,
14     compat_urllib_parse,
15     compat_urllib_request,
16     bytes_to_intlist,
17     intlist_to_bytes,
18     unified_strdate,
19     clean_html,
20 )
21 from ..aes import (
22     aes_cbc_decrypt,
23     inc,
24 )
25
26
27 class CrunchyrollIE(InfoExtractor):
28     _VALID_URL = r'https?://(?:(?P<prefix>www|m)\.)?(?P<url>crunchyroll\.com/(?:[^/]*/[^/?&]*?|media/\?id=)(?P<video_id>[0-9]+))(?:[/?&]|$)'
29     _TEST = {
30         'url': 'http://www.crunchyroll.com/wanna-be-the-strongest-in-the-world/episode-1-an-idol-wrestler-is-born-645513',
31         #'md5': 'b1639fd6ddfaa43788c85f6d1dddd412',
32         'info_dict': {
33             'id': '645513',
34             'ext': 'flv',
35             'title': 'Wanna be the Strongest in the World Episode 1 – An Idol-Wrestler is Born!',
36             'description': 'md5:2d17137920c64f2f49981a7797d275ef',
37             'thumbnail': 'http://img1.ak.crunchyroll.com/i/spire1-tmb/20c6b5e10f1a47b10516877d3c039cae1380951166_full.jpg',
38             'uploader': 'Yomiuri Telecasting Corporation (YTV)',
39             'upload_date': '20131013',
40         },
41         'params': {
42             # rtmp
43             'skip_download': True,
44         },
45     }
46
47     _FORMAT_IDS = {
48         '360': ('60', '106'),
49         '480': ('61', '106'),
50         '720': ('62', '106'),
51         '1080': ('80', '108'),
52     }
53
54     def _decrypt_subtitles(self, data, iv, id):
55         data = bytes_to_intlist(data)
56         iv = bytes_to_intlist(iv)
57         id = int(id)
58
59         def obfuscate_key_aux(count, modulo, start):
60             output = list(start)
61             for _ in range(count):
62                 output.append(output[-1] + output[-2])
63             # cut off start values
64             output = output[2:]
65             output = list(map(lambda x: x % modulo + 33, output))
66             return output
67
68         def obfuscate_key(key):
69             num1 = int(floor(pow(2, 25) * sqrt(6.9)))
70             num2 = (num1 ^ key) << 5
71             num3 = key ^ num1
72             num4 = num3 ^ (num3 >> 3) ^ num2
73             prefix = intlist_to_bytes(obfuscate_key_aux(20, 97, (1, 2)))
74             shaHash = bytes_to_intlist(sha1(prefix + str(num4).encode('ascii')).digest())
75             # Extend 160 Bit hash to 256 Bit
76             return shaHash + [0] * 12
77
78         key = obfuscate_key(id)
79         class Counter:
80             __value = iv
81             def next_value(self):
82                 temp = self.__value
83                 self.__value = inc(self.__value)
84                 return temp
85         decrypted_data = intlist_to_bytes(aes_cbc_decrypt(data, key, iv))
86         return zlib.decompress(decrypted_data)
87
88     def _convert_subtitles_to_srt(self, subtitles):
89         output = ''
90         for i, (start, end, text) in enumerate(re.findall(r'<event [^>]*?start="([^"]+)" [^>]*?end="([^"]+)" [^>]*?text="([^"]+)"[^>]*?>', subtitles), 1):
91             start = start.replace('.', ',')
92             end = end.replace('.', ',')
93             text = clean_html(text)
94             text = text.replace('\\N', '\n')
95             if not text:
96                 continue
97             output += '%d\n%s --> %s\n%s\n\n' % (i, start, end, text)
98         return output
99
100     def _real_extract(self,url):
101         mobj = re.match(self._VALID_URL, url)
102         video_id = mobj.group('video_id')
103
104         if mobj.group('prefix') == 'm':
105             mobile_webpage = self._download_webpage(url, video_id, 'Downloading mobile webpage')
106             webpage_url = self._search_regex(r'<link rel="canonical" href="([^"]+)" />', mobile_webpage, 'webpage_url')
107         else:
108             webpage_url = 'http://www.' + mobj.group('url')
109
110         webpage = self._download_webpage(webpage_url, video_id, 'Downloading webpage')
111         note_m = self._html_search_regex(r'<div class="showmedia-trailer-notice">(.+?)</div>', webpage, 'trailer-notice', default='')
112         if note_m:
113             raise ExtractorError(note_m)
114
115         mobj = re.search(r'Page\.messaging_box_controller\.addItems\(\[(?P<msg>{.+?})\]\)', webpage)
116         if mobj:
117             msg = json.loads(mobj.group('msg'))
118             if msg.get('type') == 'error':
119                 raise ExtractorError('crunchyroll returned error: %s' % msg['message_body'], expected=True)
120
121         video_title = self._html_search_regex(r'<h1[^>]*>(.+?)</h1>', webpage, 'video_title', flags=re.DOTALL)
122         video_title = re.sub(r' {2,}', ' ', video_title)
123         video_description = self._html_search_regex(r'"description":"([^"]+)', webpage, 'video_description', default='')
124         if not video_description:
125             video_description = None
126         video_upload_date = self._html_search_regex(r'<div>Availability for free users:(.+?)</div>', webpage, 'video_upload_date', fatal=False, flags=re.DOTALL)
127         if video_upload_date:
128             video_upload_date = unified_strdate(video_upload_date)
129         video_uploader = self._html_search_regex(r'<div>\s*Publisher:(.+?)</div>', webpage, 'video_uploader', fatal=False, flags=re.DOTALL)
130
131         playerdata_url = compat_urllib_parse.unquote(self._html_search_regex(r'"config_url":"([^"]+)', webpage, 'playerdata_url'))
132         playerdata_req = compat_urllib_request.Request(playerdata_url)
133         playerdata_req.data = compat_urllib_parse.urlencode({'current_page': webpage_url})
134         playerdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
135         playerdata = self._download_webpage(playerdata_req, video_id, note='Downloading media info')
136
137         stream_id = self._search_regex(r'<media_id>([^<]+)', playerdata, 'stream_id')
138         video_thumbnail = self._search_regex(r'<episode_image_url>([^<]+)', playerdata, 'thumbnail', fatal=False)
139
140         formats = []
141         for fmt in re.findall(r'\?p([0-9]{3,4})=1', webpage):
142             stream_quality, stream_format = self._FORMAT_IDS[fmt]
143             video_format = fmt+'p'
144             streamdata_req = compat_urllib_request.Request('http://www.crunchyroll.com/xml/')
145             # urlencode doesn't work!
146             streamdata_req.data = 'req=RpcApiVideoEncode%5FGetStreamInfo&video%5Fencode%5Fquality='+stream_quality+'&media%5Fid='+stream_id+'&video%5Fformat='+stream_format
147             streamdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
148             streamdata_req.add_header('Content-Length', str(len(streamdata_req.data)))
149             streamdata = self._download_webpage(streamdata_req, video_id, note='Downloading media info for '+video_format)
150             video_url = self._search_regex(r'<host>([^<]+)', streamdata, 'video_url')
151             video_play_path = self._search_regex(r'<file>([^<]+)', streamdata, 'video_play_path')
152             formats.append({
153                 'url': video_url,
154                 'play_path':   video_play_path,
155                 'ext': 'flv',
156                 'format': video_format,
157                 'format_id': video_format,
158             })
159
160         subtitles = {}
161         for sub_id, sub_name in re.findall(r'\?ssid=([0-9]+)" title="([^"]+)', webpage):
162             sub_page = self._download_webpage('http://www.crunchyroll.com/xml/?req=RpcApiSubtitle_GetXml&subtitle_script_id='+sub_id,\
163                                               video_id, note='Downloading subtitles for '+sub_name)
164             id = self._search_regex(r'id=\'([0-9]+)', sub_page, 'subtitle_id', fatal=False)
165             iv = self._search_regex(r'<iv>([^<]+)', sub_page, 'subtitle_iv', fatal=False)
166             data = self._search_regex(r'<data>([^<]+)', sub_page, 'subtitle_data', fatal=False)
167             if not id or not iv or not data:
168                 continue
169             id = int(id)
170             iv = base64.b64decode(iv)
171             data = base64.b64decode(data)
172
173             subtitle = self._decrypt_subtitles(data, iv, id).decode('utf-8')
174             lang_code = self._search_regex(r'lang_code=["\']([^"\']+)', subtitle, 'subtitle_lang_code', fatal=False)
175             if not lang_code:
176                 continue
177             subtitles[lang_code] = self._convert_subtitles_to_srt(subtitle)
178
179         return {
180             'id':          video_id,
181             'title':       video_title,
182             'description': video_description,
183             'thumbnail':   video_thumbnail,
184             'uploader':    video_uploader,
185             'upload_date': video_upload_date,
186             'subtitles':   subtitles,
187             'formats':     formats,
188         }