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import base64
from youtube import util, yt_data_extract, local_playlist, subscriptions
from youtube import yt_app
import urllib
import json
from string import Template
import youtube.proto as proto
import html
import math
import gevent
import re
import functools
import flask
from flask import request
'''continuation = Proto(
Field('optional', 'continuation', 80226972, Proto(
Field('optional', 'browse_id', 2, String),
Field('optional', 'params', 3, Base64(Proto(
Field('optional', 'channel_tab', 2, String),
Field('optional', 'sort', 3, ENUM
Field('optional', 'page', 15, String),
)))
))
)'''
'''channel_continuation = Proto(
Field('optional', 'pointless_nest', 80226972, Proto(
Field('optional', 'channel_id', 2, String),
Field('optional', 'continuation_info', 3, Base64(Proto(
Field('optional', 'channel_tab', 2, String),
Field('optional', 'sort', 3, ENUM
Field('optional', 'page', 15, String),
)))
))
)'''
headers_1 = (
('Accept', '*/*'),
('Accept-Language', 'en-US,en;q=0.5'),
('X-YouTube-Client-Name', '1'),
('X-YouTube-Client-Version', '2.20180830'),
)
headers_pbj = (
('Accept', '*/*'),
('Accept-Language', 'en-US,en;q=0.5'),
('X-YouTube-Client-Name', '2'),
('X-YouTube-Client-Version', '2.20180830'),
)
# https://www.youtube.com/browse_ajax?action_continuation=1&direct_render=1&continuation=4qmFsgJAEhhVQzdVY3M0MkZaeTN1WXpqcnF6T0lIc3caJEVnWjJhV1JsYjNNZ0FEZ0JZQUZxQUhvQk1yZ0JBQSUzRCUzRA%3D%3D
# https://www.youtube.com/browse_ajax?ctoken=4qmFsgJAEhhVQzdVY3M0MkZaeTN1WXpqcnF6T0lIc3caJEVnWjJhV1JsYjNNZ0FEZ0JZQUZxQUhvQk1yZ0JBQSUzRCUzRA%3D%3D&continuation=4qmFsgJAEhhVQzdVY3M0MkZaeTN1WXpqcnF6T0lIc3caJEVnWjJhV1JsYjNNZ0FEZ0JZQUZxQUhvQk1yZ0JBQSUzRCUzRA%3D%3D&itct=CDsQybcCIhMIhZi1krTc2wIVjMicCh2HXQnhKJsc
# grid view: 4qmFsgJAEhhVQzdVY3M0MkZaeTN1WXpqcnF6T0lIc3caJEVnWjJhV1JsYjNNZ0FEZ0JZQUZxQUhvQk1yZ0JBQSUzRCUzRA
# list view: 4qmFsgJCEhhVQzdVY3M0MkZaeTN1WXpqcnF6T0lIc3caJkVnWjJhV1JsYjNNWUF5QUFNQUk0QVdBQmFnQjZBVEs0QVFBJTNE
# SORT:
# videos:
# Popular - 1
# Oldest - 2
# Newest - 3
# playlists:
# Oldest - 2
# Newest - 3
# Last video added - 4
# view:
# grid: 0 or 1
# list: 2
def channel_ctoken(channel_id, page, sort, tab, view=1):
tab = proto.string(2, tab )
sort = proto.uint(3, int(sort))
page = proto.string(15, str(page) )
# example with shelves in videos tab: https://www.youtube.com/channel/UCNL1ZadSjHpjm4q9j2sVtOA/videos
shelf_view = proto.uint(4, 0)
view = proto.uint(6, int(view))
continuation_info = proto.string( 3, proto.percent_b64encode(tab + view + sort + shelf_view + page) )
channel_id = proto.string(2, channel_id )
pointless_nest = proto.string(80226972, channel_id + continuation_info)
return base64.urlsafe_b64encode(pointless_nest).decode('ascii')
def get_channel_tab(channel_id, page="1", sort=3, tab='videos', view=1, print_status=True):
ctoken = channel_ctoken(channel_id, page, sort, tab, view).replace('=', '%3D')
url = "https://www.youtube.com/browse_ajax?ctoken=" + ctoken
if print_status:
print("Sending channel tab ajax request")
content = util.fetch_url(url, util.desktop_ua + headers_1, debug_name='channel_tab')
if print_status:
print("Finished recieving channel tab response")
return content
def get_number_of_videos(channel_id):
# Uploads playlist
playlist_id = 'UU' + channel_id[2:]
url = 'https://m.youtube.com/playlist?list=' + playlist_id + '&pbj=1'
print("Getting number of videos")
# Sometimes retrieving playlist info fails with 403 for no discernable reason
try:
response = util.fetch_url(url, util.mobile_ua + headers_pbj, debug_name='number_of_videos')
except urllib.error.HTTPError as e:
if e.code != 403:
raise
print("Couldn't retrieve number of videos")
return 1000
response = response.decode('utf-8')
print("Got response for number of videos")
match = re.search(r'"numVideosText":\s*{\s*"runs":\s*\[{"text":\s*"([\d,]*) videos"', response)
if match:
return int(match.group(1).replace(',',''))
else:
return 0
@functools.lru_cache(maxsize=128)
def get_channel_id(username):
# method that gives the smallest possible response at ~10 kb
# needs to be as fast as possible
url = 'https://m.youtube.com/user/' + username + '/about?ajax=1&disable_polymer=true'
response = util.fetch_url(url, util.mobile_ua + headers_1).decode('utf-8')
return re.search(r'"channel_id":\s*"([a-zA-Z0-9_-]*)"', response).group(1)
def get_channel_search_json(channel_id, query, page):
params = proto.string(2, 'search') + proto.string(15, str(page))
params = proto.percent_b64encode(params)
ctoken = proto.string(2, channel_id) + proto.string(3, params) + proto.string(11, query)
ctoken = base64.urlsafe_b64encode(proto.nested(80226972, ctoken)).decode('ascii')
polymer_json = util.fetch_url("https://www.youtube.com/browse_ajax?ctoken=" + ctoken, util.desktop_ua + headers_1, debug_name='channel_search')
return polymer_json
def post_process_channel_info(info):
info['avatar'] = util.prefix_url(info['avatar'])
info['channel_url'] = util.prefix_url(info['channel_url'])
for item in info['items']:
util.prefix_urls(item)
util.add_extra_html_info(item)
playlist_sort_codes = {'2': "da", '3': "dd", '4': "lad"}
# youtube.com/[channel_id]/[tab]
# youtube.com/user/[username]/[tab]
# youtube.com/c/[custom]/[tab]
# youtube.com/[custom]/[tab]
def get_channel_page_general_url(base_url, tab, request, channel_id=None):
page_number = int(request.args.get('page', 1))
sort = request.args.get('sort', '3')
view = request.args.get('view', '1')
query = request.args.get('query', '')
if tab == 'videos' and channel_id:
tasks = (
gevent.spawn(get_number_of_videos, channel_id ),
gevent.spawn(get_channel_tab, channel_id, page_number, sort, 'videos', view)
)
gevent.joinall(tasks)
number_of_videos, polymer_json = tasks[0].value, tasks[1].value
elif tab == 'videos':
polymer_json = util.fetch_url(base_url + '/videos?pbj=1&view=0', util.desktop_ua + headers_1, debug_name='gen_channel_videos')
number_of_videos = 1000
elif tab == 'about':
polymer_json = util.fetch_url(base_url + '/about?pbj=1', util.desktop_ua + headers_1, debug_name='gen_channel_about')
elif tab == 'playlists':
polymer_json = util.fetch_url(base_url+ '/playlists?pbj=1&view=1&sort=' + playlist_sort_codes[sort], util.desktop_ua + headers_1, debug_name='gen_channel_playlists')
elif tab == 'search' and channel_id:
tasks = (
gevent.spawn(get_number_of_videos, channel_id ),
gevent.spawn(get_channel_search_json, channel_id, query, page_number)
)
gevent.joinall(tasks)
number_of_videos, polymer_json = tasks[0].value, tasks[1].value
elif tab == 'search':
url = base_url + '/search?pbj=1&query=' + urllib.parse.quote(query, safe='')
polymer_json = util.fetch_url(url, util.desktop_ua + headers_1, debug_name='gen_channel_search')
number_of_videos = 1000
else:
flask.abort(404, 'Unknown channel tab: ' + tab)
info = yt_data_extract.extract_channel_info(json.loads(polymer_json), tab)
if info['error']:
return flask.render_template('error.html', error_message = info['error'])
post_process_channel_info(info)
if tab in ('videos', 'search'):
info['number_of_videos'] = number_of_videos
info['number_of_pages'] = math.ceil(number_of_videos/30)
info['header_playlist_names'] = local_playlist.get_playlist_names()
if tab in ('videos', 'playlists'):
info['current_sort'] = sort
elif tab == 'search':
info['search_box_value'] = query
info['subscribed'] = subscriptions.is_subscribed(info['channel_id'])
return flask.render_template('channel.html',
parameters_dictionary = request.args,
**info
)
@yt_app.route('/channel/<channel_id>/')
@yt_app.route('/channel/<channel_id>/<tab>')
def get_channel_page(channel_id, tab='videos'):
return get_channel_page_general_url('https://www.youtube.com/channel/' + channel_id, tab, request, channel_id)
@yt_app.route('/user/<username>/')
@yt_app.route('/user/<username>/<tab>')
def get_user_page(username, tab='videos'):
return get_channel_page_general_url('https://www.youtube.com/user/' + username, tab, request)
@yt_app.route('/c/<custom>/')
@yt_app.route('/c/<custom>/<tab>')
def get_custom_c_page(custom, tab='videos'):
return get_channel_page_general_url('https://www.youtube.com/c/' + custom, tab, request)
@yt_app.route('/<custom>')
@yt_app.route('/<custom>/<tab>')
def get_toplevel_custom_page(custom, tab='videos'):
return get_channel_page_general_url('https://www.youtube.com/' + custom, tab, request)
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