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# encoding: utf-8from __future__ import unicode_literals
import reimport jsonimport base64import zlib
from hashlib import sha1from math import pow, sqrt, floorfrom .common import InfoExtractorfrom ..utils import ( ExtractorError, compat_urllib_parse, compat_urllib_request, bytes_to_intlist, intlist_to_bytes, unified_strdate, clean_html,)from ..aes import ( aes_cbc_decrypt, inc,)
class CrunchyrollIE(InfoExtractor): _VALID_URL = r'https?://(?:(?P<prefix>www|m)\.)?(?P<url>crunchyroll\.com/(?:[^/]*/[^/?&]*?|media/\?id=)(?P<video_id>[0-9]+))(?:[/?&]|$)' _TEST = { 'url': 'http://www.crunchyroll.com/wanna-be-the-strongest-in-the-world/episode-1-an-idol-wrestler-is-born-645513', #'md5': 'b1639fd6ddfaa43788c85f6d1dddd412', 'info_dict': { 'id': '645513', 'ext': 'flv', 'title': 'Wanna be the Strongest in the World Episode 1 – An Idol-Wrestler is Born!', 'description': 'md5:2d17137920c64f2f49981a7797d275ef', 'thumbnail': 'http://img1.ak.crunchyroll.com/i/spire1-tmb/20c6b5e10f1a47b10516877d3c039cae1380951166_full.jpg', 'uploader': 'Yomiuri Telecasting Corporation (YTV)', 'upload_date': '20131013', }, 'params': { # rtmp 'skip_download': True, }, }
_FORMAT_IDS = { '360': ('60', '106'), '480': ('61', '106'), '720': ('62', '106'), '1080': ('80', '108'), }
def _decrypt_subtitles(self, data, iv, id): data = bytes_to_intlist(data) iv = bytes_to_intlist(iv) id = int(id)
def obfuscate_key_aux(count, modulo, start): output = list(start) for _ in range(count): output.append(output[-1] + output[-2]) # cut off start values output = output[2:] output = list(map(lambda x: x % modulo + 33, output)) return output
def obfuscate_key(key): num1 = int(floor(pow(2, 25) * sqrt(6.9))) num2 = (num1 ^ key) << 5 num3 = key ^ num1 num4 = num3 ^ (num3 >> 3) ^ num2 prefix = intlist_to_bytes(obfuscate_key_aux(20, 97, (1, 2))) shaHash = bytes_to_intlist(sha1(prefix + str(num4).encode('ascii')).digest()) # Extend 160 Bit hash to 256 Bit return shaHash + [0] * 12
key = obfuscate_key(id) class Counter: __value = iv def next_value(self): temp = self.__value self.__value = inc(self.__value) return temp decrypted_data = intlist_to_bytes(aes_cbc_decrypt(data, key, iv)) return zlib.decompress(decrypted_data)
def _convert_subtitles_to_srt(self, subtitles): output = '' for i, (start, end, text) in enumerate(re.findall(r'<event [^>]*?start="([^"]+)" [^>]*?end="([^"]+)" [^>]*?text="([^"]+)"[^>]*?>', subtitles), 1): start = start.replace('.', ',') end = end.replace('.', ',') text = clean_html(text) text = text.replace('\\N', '\n') if not text: continue output += '%d\n%s --> %s\n%s\n\n' % (i, start, end, text) return output
def _real_extract(self,url): mobj = re.match(self._VALID_URL, url) video_id = mobj.group('video_id')
if mobj.group('prefix') == 'm': mobile_webpage = self._download_webpage(url, video_id, 'Downloading mobile webpage') webpage_url = self._search_regex(r'<link rel="canonical" href="([^"]+)" />', mobile_webpage, 'webpage_url') else: webpage_url = 'http://www.' + mobj.group('url')
webpage = self._download_webpage(webpage_url, video_id, 'Downloading webpage') note_m = self._html_search_regex(r'<div class="showmedia-trailer-notice">(.+?)</div>', webpage, 'trailer-notice', default='') if note_m: raise ExtractorError(note_m)
mobj = re.search(r'Page\.messaging_box_controller\.addItems\(\[(?P<msg>{.+?})\]\)', webpage) if mobj: msg = json.loads(mobj.group('msg')) if msg.get('type') == 'error': raise ExtractorError('crunchyroll returned error: %s' % msg['message_body'], expected=True)
video_title = self._html_search_regex(r'<h1[^>]*>(.+?)</h1>', webpage, 'video_title', flags=re.DOTALL) video_title = re.sub(r' {2,}', ' ', video_title) video_description = self._html_search_regex(r'"description":"([^"]+)', webpage, 'video_description', default='') if not video_description: video_description = None video_upload_date = self._html_search_regex(r'<div>Availability for free users:(.+?)</div>', webpage, 'video_upload_date', fatal=False, flags=re.DOTALL) if video_upload_date: video_upload_date = unified_strdate(video_upload_date) video_uploader = self._html_search_regex(r'<div>\s*Publisher:(.+?)</div>', webpage, 'video_uploader', fatal=False, flags=re.DOTALL)
playerdata_url = compat_urllib_parse.unquote(self._html_search_regex(r'"config_url":"([^"]+)', webpage, 'playerdata_url')) playerdata_req = compat_urllib_request.Request(playerdata_url) playerdata_req.data = compat_urllib_parse.urlencode({'current_page': webpage_url}) playerdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded') playerdata = self._download_webpage(playerdata_req, video_id, note='Downloading media info')
stream_id = self._search_regex(r'<media_id>([^<]+)', playerdata, 'stream_id') video_thumbnail = self._search_regex(r'<episode_image_url>([^<]+)', playerdata, 'thumbnail', fatal=False)
formats = [] for fmt in re.findall(r'\?p([0-9]{3,4})=1', webpage): stream_quality, stream_format = self._FORMAT_IDS[fmt] video_format = fmt+'p' streamdata_req = compat_urllib_request.Request('http://www.crunchyroll.com/xml/') # urlencode doesn't work! streamdata_req.data = 'req=RpcApiVideoEncode%5FGetStreamInfo&video%5Fencode%5Fquality='+stream_quality+'&media%5Fid='+stream_id+'&video%5Fformat='+stream_format streamdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded') streamdata_req.add_header('Content-Length', str(len(streamdata_req.data))) streamdata = self._download_webpage(streamdata_req, video_id, note='Downloading media info for '+video_format) video_url = self._search_regex(r'<host>([^<]+)', streamdata, 'video_url') video_play_path = self._search_regex(r'<file>([^<]+)', streamdata, 'video_play_path') formats.append({ 'url': video_url, 'play_path': video_play_path, 'ext': 'flv', 'format': video_format, 'format_id': video_format, })
subtitles = {} for sub_id, sub_name in re.findall(r'\?ssid=([0-9]+)" title="([^"]+)', webpage): sub_page = self._download_webpage('http://www.crunchyroll.com/xml/?req=RpcApiSubtitle_GetXml&subtitle_script_id='+sub_id,\ video_id, note='Downloading subtitles for '+sub_name) id = self._search_regex(r'id=\'([0-9]+)', sub_page, 'subtitle_id', fatal=False) iv = self._search_regex(r'<iv>([^<]+)', sub_page, 'subtitle_iv', fatal=False) data = self._search_regex(r'<data>([^<]+)', sub_page, 'subtitle_data', fatal=False) if not id or not iv or not data: continue id = int(id) iv = base64.b64decode(iv) data = base64.b64decode(data)
subtitle = self._decrypt_subtitles(data, iv, id).decode('utf-8') lang_code = self._search_regex(r'lang_code=["\']([^"\']+)', subtitle, 'subtitle_lang_code', fatal=False) if not lang_code: continue subtitles[lang_code] = self._convert_subtitles_to_srt(subtitle)
return { 'id': video_id, 'title': video_title, 'description': video_description, 'thumbnail': video_thumbnail, 'uploader': video_uploader, 'upload_date': video_upload_date, 'subtitles': subtitles, 'formats': formats, }
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