mirror of
https://github.com/l1ving/youtube-dl
synced 2024-12-22 21:22:52 +08:00
189 lines
8.3 KiB
Python
189 lines
8.3 KiB
Python
# encoding: utf-8
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from __future__ import unicode_literals
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import re
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import json
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import base64
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import zlib
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from hashlib import sha1
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from math import pow, sqrt, floor
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from .common import InfoExtractor
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from ..utils import (
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ExtractorError,
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compat_urllib_parse,
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compat_urllib_request,
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bytes_to_intlist,
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intlist_to_bytes,
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unified_strdate,
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clean_html,
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)
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from ..aes import (
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aes_cbc_decrypt,
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inc,
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)
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class CrunchyrollIE(InfoExtractor):
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_VALID_URL = r'https?://(?:(?P<prefix>www|m)\.)?(?P<url>crunchyroll\.com/(?:[^/]*/[^/?&]*?|media/\?id=)(?P<video_id>[0-9]+))(?:[/?&]|$)'
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_TEST = {
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'url': 'http://www.crunchyroll.com/wanna-be-the-strongest-in-the-world/episode-1-an-idol-wrestler-is-born-645513',
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#'md5': 'b1639fd6ddfaa43788c85f6d1dddd412',
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'info_dict': {
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'id': '645513',
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'ext': 'flv',
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'title': 'Wanna be the Strongest in the World Episode 1 – An Idol-Wrestler is Born!',
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'description': 'md5:2d17137920c64f2f49981a7797d275ef',
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'thumbnail': 'http://img1.ak.crunchyroll.com/i/spire1-tmb/20c6b5e10f1a47b10516877d3c039cae1380951166_full.jpg',
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'uploader': 'Yomiuri Telecasting Corporation (YTV)',
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'upload_date': '20131013',
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},
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'params': {
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# rtmp
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'skip_download': True,
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},
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}
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_FORMAT_IDS = {
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'360': ('60', '106'),
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'480': ('61', '106'),
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'720': ('62', '106'),
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'1080': ('80', '108'),
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}
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def _decrypt_subtitles(self, data, iv, id):
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data = bytes_to_intlist(data)
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iv = bytes_to_intlist(iv)
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id = int(id)
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def obfuscate_key_aux(count, modulo, start):
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output = list(start)
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for _ in range(count):
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output.append(output[-1] + output[-2])
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# cut off start values
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output = output[2:]
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output = list(map(lambda x: x % modulo + 33, output))
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return output
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def obfuscate_key(key):
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num1 = int(floor(pow(2, 25) * sqrt(6.9)))
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num2 = (num1 ^ key) << 5
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num3 = key ^ num1
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num4 = num3 ^ (num3 >> 3) ^ num2
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prefix = intlist_to_bytes(obfuscate_key_aux(20, 97, (1, 2)))
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shaHash = bytes_to_intlist(sha1(prefix + str(num4).encode('ascii')).digest())
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# Extend 160 Bit hash to 256 Bit
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return shaHash + [0] * 12
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key = obfuscate_key(id)
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class Counter:
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__value = iv
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def next_value(self):
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temp = self.__value
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self.__value = inc(self.__value)
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return temp
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decrypted_data = intlist_to_bytes(aes_cbc_decrypt(data, key, iv))
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return zlib.decompress(decrypted_data)
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def _convert_subtitles_to_srt(self, subtitles):
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output = ''
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for i, (start, end, text) in enumerate(re.findall(r'<event [^>]*?start="([^"]+)" [^>]*?end="([^"]+)" [^>]*?text="([^"]+)"[^>]*?>', subtitles), 1):
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start = start.replace('.', ',')
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end = end.replace('.', ',')
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text = clean_html(text)
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text = text.replace('\\N', '\n')
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if not text:
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continue
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output += '%d\n%s --> %s\n%s\n\n' % (i, start, end, text)
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return output
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def _real_extract(self,url):
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mobj = re.match(self._VALID_URL, url)
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video_id = mobj.group('video_id')
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if mobj.group('prefix') == 'm':
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mobile_webpage = self._download_webpage(url, video_id, 'Downloading mobile webpage')
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webpage_url = self._search_regex(r'<link rel="canonical" href="([^"]+)" />', mobile_webpage, 'webpage_url')
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else:
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webpage_url = 'http://www.' + mobj.group('url')
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webpage = self._download_webpage(webpage_url, video_id, 'Downloading webpage')
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note_m = self._html_search_regex(r'<div class="showmedia-trailer-notice">(.+?)</div>', webpage, 'trailer-notice', default='')
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if note_m:
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raise ExtractorError(note_m)
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mobj = re.search(r'Page\.messaging_box_controller\.addItems\(\[(?P<msg>{.+?})\]\)', webpage)
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if mobj:
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msg = json.loads(mobj.group('msg'))
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if msg.get('type') == 'error':
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raise ExtractorError('crunchyroll returned error: %s' % msg['message_body'], expected=True)
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video_title = self._html_search_regex(r'<h1[^>]*>(.+?)</h1>', webpage, 'video_title', flags=re.DOTALL)
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video_title = re.sub(r' {2,}', ' ', video_title)
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video_description = self._html_search_regex(r'"description":"([^"]+)', webpage, 'video_description', default='')
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if not video_description:
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video_description = None
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video_upload_date = self._html_search_regex(r'<div>Availability for free users:(.+?)</div>', webpage, 'video_upload_date', fatal=False, flags=re.DOTALL)
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if video_upload_date:
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video_upload_date = unified_strdate(video_upload_date)
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video_uploader = self._html_search_regex(r'<div>\s*Publisher:(.+?)</div>', webpage, 'video_uploader', fatal=False, flags=re.DOTALL)
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playerdata_url = compat_urllib_parse.unquote(self._html_search_regex(r'"config_url":"([^"]+)', webpage, 'playerdata_url'))
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playerdata_req = compat_urllib_request.Request(playerdata_url)
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playerdata_req.data = compat_urllib_parse.urlencode({'current_page': webpage_url})
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playerdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
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playerdata = self._download_webpage(playerdata_req, video_id, note='Downloading media info')
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stream_id = self._search_regex(r'<media_id>([^<]+)', playerdata, 'stream_id')
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video_thumbnail = self._search_regex(r'<episode_image_url>([^<]+)', playerdata, 'thumbnail', fatal=False)
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formats = []
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for fmt in re.findall(r'\?p([0-9]{3,4})=1', webpage):
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stream_quality, stream_format = self._FORMAT_IDS[fmt]
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video_format = fmt+'p'
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streamdata_req = compat_urllib_request.Request('http://www.crunchyroll.com/xml/')
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# urlencode doesn't work!
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streamdata_req.data = 'req=RpcApiVideoEncode%5FGetStreamInfo&video%5Fencode%5Fquality='+stream_quality+'&media%5Fid='+stream_id+'&video%5Fformat='+stream_format
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streamdata_req.add_header('Content-Type', 'application/x-www-form-urlencoded')
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streamdata_req.add_header('Content-Length', str(len(streamdata_req.data)))
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streamdata = self._download_webpage(streamdata_req, video_id, note='Downloading media info for '+video_format)
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video_url = self._search_regex(r'<host>([^<]+)', streamdata, 'video_url')
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video_play_path = self._search_regex(r'<file>([^<]+)', streamdata, 'video_play_path')
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formats.append({
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'url': video_url,
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'play_path': video_play_path,
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'ext': 'flv',
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'format': video_format,
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'format_id': video_format,
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})
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subtitles = {}
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for sub_id, sub_name in re.findall(r'\?ssid=([0-9]+)" title="([^"]+)', webpage):
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sub_page = self._download_webpage('http://www.crunchyroll.com/xml/?req=RpcApiSubtitle_GetXml&subtitle_script_id='+sub_id,\
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video_id, note='Downloading subtitles for '+sub_name)
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id = self._search_regex(r'id=\'([0-9]+)', sub_page, 'subtitle_id', fatal=False)
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iv = self._search_regex(r'<iv>([^<]+)', sub_page, 'subtitle_iv', fatal=False)
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data = self._search_regex(r'<data>([^<]+)', sub_page, 'subtitle_data', fatal=False)
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if not id or not iv or not data:
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continue
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id = int(id)
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iv = base64.b64decode(iv)
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data = base64.b64decode(data)
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subtitle = self._decrypt_subtitles(data, iv, id).decode('utf-8')
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lang_code = self._search_regex(r'lang_code=["\']([^"\']+)', subtitle, 'subtitle_lang_code', fatal=False)
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if not lang_code:
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continue
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subtitles[lang_code] = self._convert_subtitles_to_srt(subtitle)
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return {
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'id': video_id,
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'title': video_title,
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'description': video_description,
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'thumbnail': video_thumbnail,
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'uploader': video_uploader,
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'upload_date': video_upload_date,
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'subtitles': subtitles,
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'formats': formats,
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}
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