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//') @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)