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Merge pull request #1911 from SamantazFox/fix-long-playlists 

Fix long playlists (100+ videos)
This commit is contained in:
TheFrenchGhosty 2021-03-23 18:07:01 +00:00 committed by GitHub
parent 7566243151 23e5b6ba72
commit c481ca924b
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6 changed files with 119 additions and 81 deletions
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16
spec/helpers_spec.cr
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@ -47,19 +47,13 @@ describe "Helper" do
end
end
describe "#produce_playlist_url" do
it "correctly produces url for requesting index `x` of a playlist" do
produce_playlist_url("UUCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIqEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoMZWdaUVZEcERRVUU9&gl=US&hl=en")
describe "#produce_playlist_continuation" do
it "correctly produces ctoken for requesting index `x` of a playlist" do
produce_playlist_continuation("UUCla9fZca4I7KagBtgRGnOw", 100).should eq("4qmFsgJNEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoUQ0FGNkJsQlVPa05IVVElM0QlM0SaAhhVVUNsYTlmWmNhNEk3S2FnQnRnUkduT3c%3D")
produce_playlist_url("UCCla9fZca4I7KagBtgRGnOw", 0).should eq("/browse_ajax?continuation=4qmFsgIqEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoMZWdaUVZEcERRVUU9&gl=US&hl=en")
produce_playlist_continuation("UCCla9fZca4I7KagBtgRGnOw", 200).should eq("4qmFsgJLEhpWTFVVQ2xhOWZaY2E0STdLYWdCdGdSR25PdxoSQ0FKNkIxQlVPa05OWjBJJTNEmgIYVVVDbGE5ZlpjYTRJN0thZ0J0Z1JHbk93")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 0).should eq("/browse_ajax?continuation=4qmFsgI0EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDGVnWlFWRHBEUVVFPQ%3D%3D&gl=US&hl=en")
produce_playlist_url("PLt5AfwLFPxWLNVixpe1w3fi6lE2OTq0ET", 10000).should eq("/browse_ajax?continuation=4qmFsgI0EiRWTFBMdDVBZndMRlB4V0xOVml4cGUxdzNmaTZsRTJPVHEwRVQaDGVnZFFWRHBEU2tKUA%3D%3D&gl=US&hl=en")
produce_playlist_url("PL55713C70BA91BD6E", 0).should eq("/browse_ajax?continuation=4qmFsgIkEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoMZWdaUVZEcERRVUU9&gl=US&hl=en")
produce_playlist_url("PL55713C70BA91BD6E", 10000).should eq("/browse_ajax?continuation=4qmFsgIkEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoMZWdkUVZEcERTa0pQ&gl=US&hl=en")
produce_playlist_continuation("PL55713C70BA91BD6E", 100).should eq("4qmFsgJBEhRWTFBMNTU3MTNDNzBCQTkxQkQ2RRoUQ0FGNkJsQlVPa05IVVElM0QlM0SaAhJQTDU1NzEzQzcwQkE5MUJENkU%3D")
end
end

47
src/invidious/channels.cr
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@ -229,18 +229,18 @@ def fetch_channel(ucid, db, pull_all_videos = true, locale = nil)
page = 1
LOGGER.trace("fetch_channel: #{ucid} : Downloading channel videos page")
response = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
response_body = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
videos = [] of SearchVideo
begin
initial_data = JSON.parse(response.body)
initial_data = JSON.parse(response_body)
raise InfoException.new("Could not extract channel JSON") if !initial_data
LOGGER.trace("fetch_channel: #{ucid} : Extracting videos from channel videos page initial_data")
videos = extract_videos(initial_data.as_h, author, ucid)
rescue ex
if response.body.includes?("To continue with your YouTube experience, please fill out the form below.") ||
response.body.includes?("https://www.google.com/sorry/index")
if response_body.includes?("To continue with your YouTube experience, please fill out the form below.") ||
response_body.includes?("https://www.google.com/sorry/index")
raise InfoException.new("Could not extract channel info. Instance is likely blocked.")
end
raise ex
@ -304,8 +304,8 @@ def fetch_channel(ucid, db, pull_all_videos = true, locale = nil)
ids = [] of String
loop do
response = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
initial_data = JSON.parse(response.body)
response_body = get_channel_videos_response(ucid, page, auto_generated: auto_generated)
initial_data = JSON.parse(response_body)
raise InfoException.new("Could not extract channel JSON") if !initial_data
videos = extract_videos(initial_data.as_h, author, ucid)
@ -447,6 +447,7 @@ def produce_channel_videos_continuation(ucid, page = 1, auto_generated = nil, so
return continuation
end
# Used in bypass_captcha_job.cr
def produce_channel_videos_url(ucid, page = 1, auto_generated = nil, sort_by = "newest", v2 = false)
continuation = produce_channel_videos_continuation(ucid, page, auto_generated, sort_by, v2)
return "/browse_ajax?continuation=#{continuation}&gl=US&hl=en"
@ -937,35 +938,19 @@ def get_about_info(ucid, locale)
})
end
def get_channel_videos_response(ucid, page = 1, auto_generated = nil, sort_by = "newest", youtubei_browse = true)
if youtubei_browse
continuation = produce_channel_videos_continuation(ucid, page, auto_generated: auto_generated, sort_by: sort_by, v2: true)
data = {
"context": {
"client": {
"clientName": "WEB",
"clientVersion": "2.20201021.03.00",
},
},
"continuation": continuation,
}.to_json
return YT_POOL.client &.post(
"/youtubei/v1/browse?key=AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8",
headers: HTTP::Headers{"content-type" => "application/json"},
body: data
)
else
url = produce_channel_videos_url(ucid, page, auto_generated: auto_generated, sort_by: sort_by, v2: true)
return YT_POOL.client &.get(url)
end
def get_channel_videos_response(ucid, page = 1, auto_generated = nil, sort_by = "newest")
continuation = produce_channel_videos_continuation(ucid, page,
auto_generated: auto_generated, sort_by: sort_by, v2: true)
return request_youtube_api_browse(continuation)
end
def get_60_videos(ucid, author, page, auto_generated, sort_by = "newest")
videos = [] of SearchVideo
2.times do |i|
response = get_channel_videos_response(ucid, page * 2 + (i - 1), auto_generated: auto_generated, sort_by: sort_by)
initial_data = JSON.parse(response.body)
response_json = get_channel_videos_response(ucid, page * 2 + (i - 1), auto_generated: auto_generated, sort_by: sort_by)
initial_data = JSON.parse(response_json)
break if !initial_data
videos.concat extract_videos(initial_data.as_h, author, ucid)
end
@ -974,8 +959,8 @@ def get_60_videos(ucid, author, page, auto_generated, sort_by = "newest")
end
def get_latest_videos(ucid)
response = get_channel_videos_response(ucid)
initial_data = JSON.parse(response.body)
response_json = get_channel_videos_response(ucid)
initial_data = JSON.parse(response_json)
return [] of SearchVideo if !initial_data
author = initial_data["metadata"]?.try &.["channelMetadataRenderer"]?.try &.["title"]?.try &.as_s
items = extract_videos(initial_data.as_h, author, ucid)

31
src/invidious/helpers/youtube_api.cr Normal file
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@ -0,0 +1,31 @@
#
# This file contains youtube API wrappers
#
# Hard-coded constants required by the API
HARDCODED_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8"
HARDCODED_CLIENT_VERS = "2.20210318.08.00"
def request_youtube_api_browse(continuation)
# JSON Request data, required by the API
data = {
"context": {
"client": {
"hl": "en",
"gl": "US",
"clientName": "WEB",
"clientVersion": HARDCODED_CLIENT_VERS,
},
},
"continuation": continuation,
}
# Send the POST request and return result
response = YT_POOL.client &.post(
"/youtubei/v1/browse?key=#{HARDCODED_API_KEY}",
headers: HTTP::Headers{"content-type" => "application/json"},
body: data.to_json
)
return response.body
end

95
src/invidious/playlists.cr
View File

@ -307,23 +307,32 @@ def subscribe_playlist(db, user, playlist)
return playlist
end
def produce_playlist_url(id, index)
def produce_playlist_continuation(id, index)
if id.starts_with? "UC"
id = "UU" + id.lchop("UC")
end
plid = "VL" + id
# Emulate a "request counter" increment, to make perfectly valid
# ctokens, even if at the time of writing, it's ignored by youtube.
request_count = (index / 100).to_i64 || 1_i64
data = {"1:varint" => index.to_i64}
.try { |i| Protodec::Any.cast_json(i) }
.try { |i| Protodec::Any.from_json(i) }
.try { |i| Base64.urlsafe_encode(i, padding: false) }
data_wrapper = {"1:varint" => request_count, "15:string" => "PT:#{data}"}
.try { |i| Protodec::Any.cast_json(i) }
.try { |i| Protodec::Any.from_json(i) }
.try { |i| Base64.urlsafe_encode(i) }
.try { |i| URI.encode_www_form(i) }
object = {
"80226972:embedded" => {
"2:string" => plid,
"3:base64" => {
"15:string" => "PT:#{data}",
},
"2:string" => plid,
"3:string" => data_wrapper,
"35:string" => id,
},
}
@ -332,7 +341,7 @@ def produce_playlist_url(id, index)
.try { |i| Base64.urlsafe_encode(i) }
.try { |i| URI.encode_www_form(i) }
return "/browse_ajax?continuation=#{continuation}&gl=US&hl=en"
return continuation
end
def get_playlist(db, plid, locale, refresh = true, force_refresh = false)
@ -427,47 +436,59 @@ def fetch_playlist(plid, locale)
end
def get_playlist_videos(db, playlist, offset, locale = nil, continuation = nil)
if playlist.is_a? InvidiousPlaylist
db.query_all("SELECT * FROM playlist_videos WHERE plid = $1 ORDER BY array_position($2, index) LIMIT 100 OFFSET $3", playlist.id, playlist.index, offset, as: PlaylistVideo)
else
fetch_playlist_videos(playlist.id, playlist.video_count, offset, locale, continuation)
end
end
def fetch_playlist_videos(plid, video_count, offset = 0, locale = nil, continuation = nil)
if continuation
response = YT_POOL.client &.get("/watch?v=#{continuation}&list=#{plid}&gl=US&hl=en")
initial_data = extract_initial_data(response.body)
offset = initial_data["currentVideoEndpoint"]?.try &.["watchEndpoint"]?.try &.["index"]?.try &.as_i64 || offset
end
if video_count > 100
url = produce_playlist_url(plid, offset)
response = YT_POOL.client &.get(url)
initial_data = JSON.parse(response.body).as_a.find(&.as_h.["response"]?).try &.as_h
elsif offset > 100
# Show empy playlist if requested page is out of range
if offset >= playlist.video_count
return [] of PlaylistVideo
else # Extract first page of videos
response = YT_POOL.client &.get("/playlist?list=#{plid}&gl=US&hl=en")
initial_data = extract_initial_data(response.body)
end
return [] of PlaylistVideo if !initial_data
videos = extract_playlist_videos(initial_data)
if playlist.is_a? InvidiousPlaylist
db.query_all("SELECT * FROM playlist_videos WHERE plid = $1 ORDER BY array_position($2, index) LIMIT 100 OFFSET $3",
playlist.id, playlist.index, offset, as: PlaylistVideo)
else
if offset >= 100
# Normalize offset to match youtube's behavior (100 videos chunck per request)
offset = (offset / 100).to_i64 * 100_i64
until videos.empty? || videos[0].index == offset
videos.shift
ctoken = produce_playlist_continuation(playlist.id, offset)
initial_data = JSON.parse(request_youtube_api_browse(ctoken)).as_h
else
response = YT_POOL.client &.get("/playlist?list=#{playlist.id}&gl=US&hl=en")
initial_data = extract_initial_data(response.body)
end
if initial_data
return extract_playlist_videos(initial_data)
else
return [] of PlaylistVideo
end
end
return videos
end
def extract_playlist_videos(initial_data : Hash(String, JSON::Any))
videos = [] of PlaylistVideo
(initial_data["contents"]?.try &.["twoColumnBrowseResultsRenderer"]["tabs"].as_a.select(&.["tabRenderer"]["selected"]?.try &.as_bool)[0]["tabRenderer"]["content"]["sectionListRenderer"]["contents"][0]["itemSectionRenderer"]["contents"][0]["playlistVideoListRenderer"]["contents"].as_a ||
initial_data["response"]?.try &.["continuationContents"]["playlistVideoListContinuation"]["contents"].as_a).try &.each do |item|
if initial_data["contents"]?
tabs = initial_data["contents"]["twoColumnBrowseResultsRenderer"]["tabs"]
tabs_renderer = tabs.as_a.select(&.["tabRenderer"]["selected"]?.try &.as_bool)[0]["tabRenderer"]
# Watch out the two versions, with and without "s"
if tabs_renderer["contents"]? || tabs_renderer["content"]?
# Initial playlist data
tabs_contents = tabs_renderer.["contents"]? || tabs_renderer.["content"]
list_renderer = tabs_contents.["sectionListRenderer"]["contents"][0]
item_renderer = list_renderer.["itemSectionRenderer"]["contents"][0]
contents = item_renderer.["playlistVideoListRenderer"]["contents"].as_a
else
# Continuation data
contents = initial_data["onResponseReceivedActions"][0]?
.try &.["appendContinuationItemsAction"]["continuationItems"].as_a
end
else
contents = initial_data["response"]?.try &.["continuationContents"]["playlistVideoListContinuation"]["contents"].as_a
end
contents.try &.each do |item|
if i = item["playlistVideoRenderer"]?
video_id = i["navigationEndpoint"]["watchEndpoint"]["videoId"].as_s
plid = i["navigationEndpoint"]["watchEndpoint"]["playlistId"].as_s

9
src/invidious/routes/playlists.cr
View File

@ -433,6 +433,13 @@ class Invidious::Routes::Playlists < Invidious::Routes::BaseRoute
return error_template(500, ex)
end
page_count = (playlist.video_count / 100).to_i
page_count = 1 if page_count == 0
if page > page_count
return env.redirect "/playlist?list=#{plid}&page=#{page_count}"
end
if playlist.privacy == PlaylistPrivacy::Private && playlist.author != user.try &.email
return error_template(403, "This playlist is private.")
end
@ -440,7 +447,7 @@ class Invidious::Routes::Playlists < Invidious::Routes::BaseRoute
begin
videos = get_playlist_videos(PG_DB, playlist, offset: (page - 1) * 100, locale: locale)
rescue ex
videos = [] of PlaylistVideo
return error_template(500, "Error encountered while retrieving playlist videos.<br>#{ex.message}")
end
if playlist.author == user.try &.email

2
src/invidious/views/playlist.ecr
View File

@ -103,7 +103,7 @@
</div>
<div class="pure-u-1 pure-u-lg-3-5"></div>
<div class="pure-u-1 pure-u-lg-1-5" style="text-align:right">
<% if videos.size == 100 %>
<% if page_count != 1 && page < page_count %>
<a href="/playlist?list=<%= playlist.id %>&page=<%= page + 1 %>">
<%= translate(locale, "Next page") %>
</a>