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 cachetools.func import traceback 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 # cache entries expire after 30 minutes @cachetools.func.ttl_cache(maxsize=128, ttl=30*60) def get_number_of_videos_channel(channel_id): if channel_id is None: return 1000 # Uploads playlist playlist_id = 'UU' + channel_id[2:] url = 'https://m.youtube.com/playlist?list=' + playlist_id + '&pbj=1' try: response = util.fetch_url(url, util.mobile_ua + headers_pbj, debug_name='number_of_videos', report_text='Got number of videos') except urllib.error.HTTPError as e: traceback.print_exc() print("Couldn't retrieve number of videos") return 1000 response = response.decode('utf-8') 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 channel_id_re = re.compile(r'videos\.xml\?channel_id=([a-zA-Z0-9_-]{24})"') @cachetools.func.lru_cache(maxsize=128) def get_channel_id(base_url): # method that gives the smallest possible response at ~4 kb # needs to be as fast as possible base_url = base_url.replace('https://www', 'https://m') # avoid redirect response = util.fetch_url(base_url + '/about?pbj=1', util.mobile_ua + headers_pbj, debug_name='get_channel_id', report_text='Got channel id').decode('utf-8') match = channel_id_re.search(response) if match: return match.group(1) return None def get_number_of_videos_general(base_url): return get_number_of_videos_channel(get_channel_id(base_url)) 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, channel_id), gevent.spawn(get_channel_tab, channel_id, page_number, sort, 'videos', view) ) gevent.joinall(tasks) util.check_gevent_exceptions(*tasks) number_of_videos, polymer_json = tasks[0].value, tasks[1].value elif tab == 'videos': tasks = ( gevent.spawn(get_number_of_videos_general, base_url), gevent.spawn(util.fetch_url, base_url + '/videos?pbj=1&view=0', util.desktop_ua + headers_1, debug_name='gen_channel_videos') ) gevent.joinall(tasks) util.check_gevent_exceptions(*tasks) number_of_videos, polymer_json = tasks[0].value, tasks[1].value 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: polymer_json = get_channel_search_json(channel_id, query, page_number) 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') else: flask.abort(404, 'Unknown channel tab: ' + tab) info = yt_data_extract.extract_channel_info(json.loads(polymer_json), tab) if info['error'] is not None: return flask.render_template('error.html', error_message = info['error']) post_process_channel_info(info) if tab == 'videos': 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['header_playlist_names'] = local_playlist.get_playlist_names() info['page_number'] = page_number info['subscribed'] = subscriptions.is_subscribed(info['channel_id']) return flask.render_template('channel.html', parameters_dictionary = request.args, **info ) @yt_app.route('/channel//') @yt_app.route('/channel//') 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//') @yt_app.route('/user//') 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//') @yt_app.route('/c//') 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('/') @yt_app.route('//') def get_toplevel_custom_page(custom, tab='videos'): return get_channel_page_general_url('https://www.youtube.com/' + custom, tab, request)