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from youtube import util, yt_data_extract, proto
from youtube import yt_app
import base64
import urllib
import json
import string
import gevent
import math
from flask import request
import flask
def playlist_ctoken(playlist_id, offset):
offset = proto.uint(1, offset)
# this is just obfuscation as far as I can tell. It doesn't even follow protobuf
offset = b'PT:' + proto.unpadded_b64encode(offset)
offset = proto.string(15, offset)
continuation_info = proto.string( 3, proto.percent_b64encode(offset) )
playlist_id = proto.string(2, 'VL' + playlist_id )
pointless_nest = proto.string(80226972, playlist_id + continuation_info)
return base64.urlsafe_b64encode(pointless_nest).decode('ascii')
# initial request types:
# polymer_json: https://m.youtube.com/playlist?list=PLv3TTBr1W_9tppikBxAE_G6qjWdBljBHJ&pbj=1&lact=0
# ajax json: https://m.youtube.com/playlist?list=PLv3TTBr1W_9tppikBxAE_G6qjWdBljBHJ&pbj=1&lact=0 with header X-YouTube-Client-Version: 1.20180418
# continuation request types:
# polymer_json: https://m.youtube.com/playlist?&ctoken=[...]&pbj=1
# ajax json: https://m.youtube.com/playlist?action_continuation=1&ajax=1&ctoken=[...]
headers_1 = (
('Accept', '*/*'),
('Accept-Language', 'en-US,en;q=0.5'),
('X-YouTube-Client-Name', '2'),
('X-YouTube-Client-Version', '2.20180614'),
)
def playlist_first_page(playlist_id, report_text = "Retrieved playlist"):
url = 'https://m.youtube.com/playlist?list=' + playlist_id + '&pbj=1'
content = util.fetch_url(url, util.mobile_ua + headers_1, report_text=report_text, debug_name='playlist_first_page')
content = json.loads(util.uppercase_escape(content.decode('utf-8')))
return content
#https://m.youtube.com/playlist?itct=CBMQybcCIhMIptj9xJaJ2wIV2JKcCh3Idwu-&ctoken=4qmFsgI2EiRWTFBMT3kwajlBdmxWWlB0bzZJa2pLZnB1MFNjeC0tN1BHVEMaDmVnWlFWRHBEUWxFJTNE&pbj=1
def get_videos(playlist_id, page):
url = "https://m.youtube.com/playlist?ctoken=" + playlist_ctoken(playlist_id, (int(page)-1)*20) + "&pbj=1"
headers = {
'User-Agent': ' Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1',
'Accept': '*/*',
'Accept-Language': 'en-US,en;q=0.5',
'X-YouTube-Client-Name': '2',
'X-YouTube-Client-Version': '2.20180508',
}
content = util.fetch_url(url, headers, report_text="Retrieved playlist", debug_name='playlist_videos')
info = json.loads(util.uppercase_escape(content.decode('utf-8')))
return info
@yt_app.route('/playlist')
def get_playlist_page():
if 'list' not in request.args:
abort(400)
playlist_id = request.args.get('list')
page = request.args.get('page', '1')
if page == '1':
first_page_json = playlist_first_page(playlist_id)
this_page_json = first_page_json
else:
tasks = (
gevent.spawn(playlist_first_page, playlist_id, report_text="Retrieved playlist info" ),
gevent.spawn(get_videos, playlist_id, page)
)
gevent.joinall(tasks)
first_page_json, this_page_json = tasks[0].value, tasks[1].value
info = yt_data_extract.extract_playlist_info(this_page_json)
if info['error']:
return flask.render_template('error.html', error_message = info['error'])
if page != '1':
info['metadata'] = yt_data_extract.extract_playlist_metadata(first_page_json)
yt_data_extract.prefix_urls(info['metadata'])
for item in info.get('items', ()):
yt_data_extract.prefix_urls(item)
yt_data_extract.add_extra_html_info(item)
if 'id' in item:
item['thumbnail'] = '/https://i.ytimg.com/vi/' + item['id'] + '/default.jpg'
video_count = yt_data_extract.deep_get(info, 'metadata', 'video_count')
if video_count is None:
video_count = 40
return flask.render_template('playlist.html',
video_list = info.get('items', []),
num_pages = math.ceil(video_count/20),
parameters_dictionary = request.args,
**info['metadata']
).encode('utf-8')
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