invidious/src/invidious.cr
2019-08-22 09:15:33 -05:00

1905 lines
53 KiB
Crystal

# "Invidious" (which is an alternative front-end to YouTube)
# Copyright (C) 2019 Omar Roth
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
require "digest/md5"
require "file_utils"
require "kemal"
require "markdown"
require "openssl/hmac"
require "option_parser"
require "pg"
require "sqlite3"
require "xml"
require "yaml"
require "zip"
require "./invidious/helpers/*"
require "./invidious/*"
CONFIG = Config.from_yaml(File.read("config/config.yml"))
HMAC_KEY = CONFIG.hmac_key || Random::Secure.hex(32)
ARCHIVE_URL = URI.parse("https://archive.org")
LOGIN_URL = URI.parse("https://accounts.google.com")
PUBSUB_URL = URI.parse("https://pubsubhubbub.appspot.com")
REDDIT_URL = URI.parse("https://www.reddit.com")
TEXTCAPTCHA_URL = URI.parse("http://textcaptcha.com")
YT_URL = URI.parse("https://www.youtube.com")
CHARS_SAFE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"
TEST_IDS = {"AgbeGFYluEA", "BaW_jenozKc", "a9LDPn-MO4I", "ddFvjfvPnqk", "iqKdEhx-dD4"}
MAX_ITEMS_PER_PAGE = 1500
REQUEST_HEADERS_WHITELIST = {"Accept", "Accept-Encoding", "Cache-Control", "Connection", "Content-Length", "If-None-Match", "Range"}
RESPONSE_HEADERS_BLACKLIST = {"Access-Control-Allow-Origin", "Alt-Svc", "Server"}
HTTP_CHUNK_SIZE = 10485760 # ~10MB
CURRENT_BRANCH = {{ "#{`git branch | sed -n '/\* /s///p'`.strip}" }}
CURRENT_COMMIT = {{ "#{`git rev-list HEAD --max-count=1 --abbrev-commit`.strip}" }}
CURRENT_VERSION = {{ "#{`git describe --tags --abbrev=0`.strip}" }}
# This is used to determine the `?v=` on the end of file URLs (for cache busting). We
# only need to expire modified assets, so we can use this to find the last commit that changes
# any assets
ASSET_COMMIT = {{ "#{`git rev-list HEAD --max-count=1 --abbrev-commit -- assets`.strip}" }}
SOFTWARE = {
"name" => "invidious",
"version" => "#{CURRENT_VERSION}-#{CURRENT_COMMIT}",
"branch" => "#{CURRENT_BRANCH}",
}
LOCALES = {
"ar" => load_locale("ar"),
"de" => load_locale("de"),
"el" => load_locale("el"),
"en-US" => load_locale("en-US"),
"eo" => load_locale("eo"),
"es" => load_locale("es"),
"eu" => load_locale("eu"),
"fr" => load_locale("fr"),
"is" => load_locale("is"),
"it" => load_locale("it"),
"nb_NO" => load_locale("nb_NO"),
"nl" => load_locale("nl"),
"pl" => load_locale("pl"),
"ru" => load_locale("ru"),
"uk" => load_locale("uk"),
"zh-CN" => load_locale("zh-CN"),
}
config = CONFIG
logger = Invidious::LogHandler.new
Kemal.config.extra_options do |parser|
parser.banner = "Usage: invidious [arguments]"
parser.on("-c THREADS", "--channel-threads=THREADS", "Number of threads for refreshing channels (default: #{config.channel_threads})") do |number|
begin
config.channel_threads = number.to_i
rescue ex
puts "THREADS must be integer"
exit
end
end
parser.on("-f THREADS", "--feed-threads=THREADS", "Number of threads for refreshing feeds (default: #{config.feed_threads})") do |number|
begin
config.feed_threads = number.to_i
rescue ex
puts "THREADS must be integer"
exit
end
end
parser.on("-o OUTPUT", "--output=OUTPUT", "Redirect output (default: STDOUT)") do |output|
FileUtils.mkdir_p(File.dirname(output))
logger = Invidious::LogHandler.new(File.open(output, mode: "a"))
end
parser.on("-v", "--version", "Print version") do |output|
puts SOFTWARE.to_pretty_json
exit
end
end
Kemal::CLI.new ARGV
statistics = {
"error" => "Statistics are not availabile.",
}
proxies = PROXY_LIST
decrypt_function = [] of {name: String, value: Int32}
spawn do
update_decrypt_function do |function|
decrypt_function = function
end
end
before_all do |env|
env.response.headers["X-XSS-Protection"] = "1; mode=block;"
env.response.headers["X-Content-Type-Options"] = "nosniff"
preferences = CONFIG.default_user_preferences.dup
locale = env.params.query["hl"]?
locale ||= "en-US"
preferences.locale = locale
env.set "preferences", preferences
end
# API Endpoints
get "/api/v1/stats" do |env|
env.response.content_type = "application/json"
if !config.statistics_enabled
error_message = {"error" => "Statistics are not enabled."}.to_json
env.response.status_code = 400
next error_message
end
if statistics["error"]?
env.response.status_code = 500
next statistics.to_json
end
statistics.to_json
end
# YouTube provides "storyboards", which are sprites containing x * y
# preview thumbnails for individual scenes in a video.
# See https://support.jwplayer.com/articles/how-to-add-preview-thumbnails
get "/api/v1/storyboards/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
id = env.params.url["id"]
region = env.params.query["region"]?
client = make_client(YT_URL)
begin
video = fetch_video(id, region)
rescue ex : VideoRedirect
next env.redirect "/api/v1/storyboards/#{ex.message}"
rescue ex
env.response.status_code = 500
next
end
storyboards = video.storyboards
width = env.params.query["width"]?
height = env.params.query["height"]?
if !width && !height
response = JSON.build do |json|
json.object do
json.field "storyboards" do
generate_storyboards(json, id, storyboards, config, Kemal.config)
end
end
end
next response
end
env.response.content_type = "text/vtt"
storyboard = storyboards.select { |storyboard| width == "#{storyboard[:width]}" || height == "#{storyboard[:height]}" }
if storyboard.empty?
env.response.status_code = 404
next
else
storyboard = storyboard[0]
end
webvtt = <<-END_VTT
WEBVTT
END_VTT
start_time = 0.milliseconds
end_time = storyboard[:interval].milliseconds
storyboard[:storyboard_count].times do |i|
host_url = make_host_url(config, Kemal.config)
url = storyboard[:url].gsub("$M", i).gsub("https://i9.ytimg.com", host_url)
storyboard[:storyboard_height].times do |j|
storyboard[:storyboard_width].times do |k|
webvtt += <<-END_CUE
#{start_time}.000 --> #{end_time}.000
#{url}#xywh=#{storyboard[:width] * k},#{storyboard[:height] * j},#{storyboard[:width]},#{storyboard[:height]}
END_CUE
start_time += storyboard[:interval].milliseconds
end_time += storyboard[:interval].milliseconds
end
end
end
webvtt
end
get "/api/v1/captions/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
id = env.params.url["id"]
region = env.params.query["region"]?
# See https://github.com/ytdl-org/youtube-dl/blob/6ab30ff50bf6bd0585927cb73c7421bef184f87a/youtube_dl/extractor/youtube.py#L1354
# It is possible to use `/api/timedtext?type=list&v=#{id}` and
# `/api/timedtext?type=track&v=#{id}&lang=#{lang_code}` directly,
# but this does not provide links for auto-generated captions.
#
# In future this should be investigated as an alternative, since it does not require
# getting video info.
client = make_client(YT_URL)
begin
video = fetch_video(id, region)
rescue ex : VideoRedirect
next env.redirect "/api/v1/captions/#{ex.message}"
rescue ex
env.response.status_code = 500
next
end
captions = video.captions
label = env.params.query["label"]?
lang = env.params.query["lang"]?
tlang = env.params.query["tlang"]?
if !label && !lang
response = JSON.build do |json|
json.object do
json.field "captions" do
json.array do
captions.each do |caption|
json.object do
json.field "label", caption.name.simpleText
json.field "languageCode", caption.languageCode
json.field "url", "/api/v1/captions/#{id}?label=#{URI.escape(caption.name.simpleText)}"
end
end
end
end
end
end
next response
end
env.response.content_type = "text/vtt; charset=UTF-8"
caption = captions.select { |caption| caption.name.simpleText == label }
if lang
caption = captions.select { |caption| caption.languageCode == lang }
end
if caption.empty?
env.response.status_code = 404
next
else
caption = caption[0]
end
url = caption.baseUrl + "&tlang=#{tlang}"
# Auto-generated captions often have cues that aren't aligned properly with the video,
# as well as some other markup that makes it cumbersome, so we try to fix that here
if caption.name.simpleText.includes? "auto-generated"
caption_xml = client.get(url).body
caption_xml = XML.parse(caption_xml)
webvtt = <<-END_VTT
WEBVTT
Kind: captions
Language: #{tlang || caption.languageCode}
END_VTT
caption_nodes = caption_xml.xpath_nodes("//transcript/text")
caption_nodes.each_with_index do |node, i|
start_time = node["start"].to_f.seconds
duration = node["dur"]?.try &.to_f.seconds
duration ||= start_time
if caption_nodes.size > i + 1
end_time = caption_nodes[i + 1]["start"].to_f.seconds
else
end_time = start_time + duration
end
start_time = "#{start_time.hours.to_s.rjust(2, '0')}:#{start_time.minutes.to_s.rjust(2, '0')}:#{start_time.seconds.to_s.rjust(2, '0')}.#{start_time.milliseconds.to_s.rjust(3, '0')}"
end_time = "#{end_time.hours.to_s.rjust(2, '0')}:#{end_time.minutes.to_s.rjust(2, '0')}:#{end_time.seconds.to_s.rjust(2, '0')}.#{end_time.milliseconds.to_s.rjust(3, '0')}"
text = HTML.unescape(node.content)
text = text.gsub(/<font color="#[a-fA-F0-9]{6}">/, "")
text = text.gsub(/<\/font>/, "")
if md = text.match(/(?<name>.*) : (?<text>.*)/)
text = "<v #{md["name"]}>#{md["text"]}</v>"
end
webvtt += <<-END_CUE
#{start_time} --> #{end_time}
#{text}
END_CUE
end
else
url += "&format=vtt"
webvtt = client.get(url).body
end
if title = env.params.query["title"]?
# https://blog.fastmail.com/2011/06/24/download-non-english-filenames/
env.response.headers["Content-Disposition"] = "attachment; filename=\"#{URI.escape(title)}\"; filename*=UTF-8''#{URI.escape(title)}"
end
webvtt
end
get "/api/v1/comments/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
region = env.params.query["region"]?
env.response.content_type = "application/json"
id = env.params.url["id"]
source = env.params.query["source"]?
source ||= "youtube"
thin_mode = env.params.query["thin_mode"]?
thin_mode = thin_mode == "true"
format = env.params.query["format"]?
format ||= "json"
continuation = env.params.query["continuation"]?
sort_by = env.params.query["sort_by"]?.try &.downcase
if source == "youtube"
sort_by ||= "top"
begin
comments = fetch_youtube_comments(id, continuation, format, locale, thin_mode, region, sort_by: sort_by)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
next comments
elsif source == "reddit"
sort_by ||= "confidence"
begin
comments, reddit_thread = fetch_reddit_comments(id, sort_by: sort_by)
content_html = template_reddit_comments(comments, locale)
content_html = fill_links(content_html, "https", "www.reddit.com")
content_html = replace_links(content_html)
rescue ex
comments = nil
reddit_thread = nil
content_html = ""
end
if !reddit_thread || !comments
env.response.status_code = 404
next
end
if format == "json"
reddit_thread = JSON.parse(reddit_thread.to_json).as_h
reddit_thread["comments"] = JSON.parse(comments.to_json)
next reddit_thread.to_json
else
response = {
"title" => reddit_thread.title,
"permalink" => reddit_thread.permalink,
"contentHtml" => content_html,
}
next response.to_json
end
end
end
get "/api/v1/insights/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
id = env.params.url["id"]
env.response.content_type = "application/json"
error_message = {"error" => "YouTube has removed publicly-available analytics."}.to_json
env.response.status_code = 410
next error_message
client = make_client(YT_URL)
headers = HTTP::Headers.new
response = client.get("/watch?v=#{id}&gl=US&hl=en&disable_polymer=1")
headers["cookie"] = response.cookies.add_request_headers(headers)["cookie"]
headers["content-type"] = "application/x-www-form-urlencoded"
headers["x-client-data"] = "CIi2yQEIpbbJAQipncoBCNedygEIqKPKAQ=="
headers["x-spf-previous"] = "https://www.youtube.com/watch?v=#{id}"
headers["x-spf-referer"] = "https://www.youtube.com/watch?v=#{id}"
headers["x-youtube-client-name"] = "1"
headers["x-youtube-client-version"] = "2.20180719"
session_token = response.body.match(/'XSRF_TOKEN': "(?<session_token>[A-Za-z0-9\_\-\=]+)"/).try &.["session_token"]? || ""
post_req = {
session_token: session_token,
}
response = client.post("/insight_ajax?action_get_statistics_and_data=1&v=#{id}", headers, form: post_req).body
response = XML.parse(response)
html_content = XML.parse_html(response.xpath_node(%q(//html_content)).not_nil!.content)
graph_data = response.xpath_node(%q(//graph_data))
if !graph_data
error = html_content.xpath_node(%q(//p)).not_nil!.content
next {"error" => error}.to_json
end
graph_data = JSON.parse(graph_data.content)
view_count = 0_i64
time_watched = 0_i64
subscriptions_driven = 0
shares = 0
stats_nodes = html_content.xpath_nodes(%q(//table/tr/td))
stats_nodes.each do |node|
key = node.xpath_node(%q(.//span))
value = node.xpath_node(%q(.//div))
if !key || !value
next
end
key = key.content
value = value.content
case key
when "Views"
view_count = value.delete(", ").to_i64
when "Time watched"
time_watched = value
when "Subscriptions driven"
subscriptions_driven = value.delete(", ").to_i
when "Shares"
shares = value.delete(", ").to_i
end
end
avg_view_duration_seconds = html_content.xpath_node(%q(//div[@id="stats-chart-tab-watch-time"]/span/span[2])).not_nil!.content
avg_view_duration_seconds = decode_length_seconds(avg_view_duration_seconds)
{
"viewCount" => view_count,
"timeWatchedText" => time_watched,
"subscriptionsDriven" => subscriptions_driven,
"shares" => shares,
"avgViewDurationSeconds" => avg_view_duration_seconds,
"graphData" => graph_data,
}.to_json
end
get "/api/v1/annotations/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "text/xml"
id = env.params.url["id"]
source = env.params.query["source"]?
source ||= "archive"
if !id.match(/[a-zA-Z0-9_-]{11}/)
env.response.status_code = 400
next
end
annotations = ""
case source
when "archive"
index = CHARS_SAFE.index(id[0]).not_nil!.to_s.rjust(2, '0')
# IA doesn't handle leading hyphens,
# so we use https://archive.org/details/youtubeannotations_64
if index == "62"
index = "64"
id = id.sub(/^-/, 'A')
end
file = URI.escape("#{id[0, 3]}/#{id}.xml")
client = make_client(ARCHIVE_URL)
location = client.get("/download/youtubeannotations_#{index}/#{id[0, 2]}.tar/#{file}")
if !location.headers["Location"]?
env.response.status_code = location.status_code
end
response = make_client(URI.parse(location.headers["Location"])).get(location.headers["Location"])
if response.body.empty?
env.response.status_code = 404
next
end
if response.status_code != 200
env.response.status_code = response.status_code
next
end
annotations = response.body
when "youtube"
client = make_client(YT_URL)
response = client.get("/annotations_invideo?video_id=#{id}")
if response.status_code != 200
env.response.status_code = response.status_code
next
end
annotations = response.body
end
annotations
end
get "/api/v1/videos/:id" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
id = env.params.url["id"]
region = env.params.query["region"]?
begin
video = fetch_video(id, region)
rescue ex : VideoRedirect
next env.redirect "/api/v1/videos/#{ex.message}"
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
video.to_json(locale, config, Kemal.config, decrypt_function)
end
get "/api/v1/trending" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
region = env.params.query["region"]?
trending_type = env.params.query["type"]?
begin
trending, plid = fetch_trending(trending_type, region, locale)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
videos = JSON.build do |json|
json.array do
trending.each do |video|
video.to_json(locale, config, Kemal.config, json)
end
end
end
videos
end
get "/api/v1/channels/:ucid" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
sort_by = env.params.query["sort_by"]?.try &.downcase
sort_by ||= "newest"
begin
channel = get_about_info(ucid, locale)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
page = 1
if channel.auto_generated
videos = [] of SearchVideo
count = 0
else
begin
videos, count = get_60_videos(channel.ucid, channel.author, page, channel.auto_generated, sort_by)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
end
JSON.build do |json|
# TODO: Refactor into `to_json` for InvidiousChannel
json.object do
json.field "author", channel.author
json.field "authorId", channel.ucid
json.field "authorUrl", channel.author_url
json.field "authorBanners" do
json.array do
if channel.banner
qualities = {
{width: 2560, height: 424},
{width: 2120, height: 351},
{width: 1060, height: 175},
}
qualities.each do |quality|
json.object do
json.field "url", channel.banner.not_nil!.gsub("=w1060-", "=w#{quality[:width]}-")
json.field "width", quality[:width]
json.field "height", quality[:height]
end
end
json.object do
json.field "url", channel.banner.not_nil!.split("=w1060-")[0]
json.field "width", 512
json.field "height", 288
end
end
end
end
json.field "authorThumbnails" do
json.array do
qualities = {32, 48, 76, 100, 176, 512}
qualities.each do |quality|
json.object do
json.field "url", channel.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
json.field "width", quality
json.field "height", quality
end
end
end
end
json.field "subCount", channel.sub_count
json.field "totalViews", channel.total_views
json.field "joined", channel.joined.to_unix
json.field "paid", channel.paid
json.field "autoGenerated", channel.auto_generated
json.field "isFamilyFriendly", channel.is_family_friendly
json.field "description", html_to_content(channel.description_html)
json.field "descriptionHtml", channel.description_html
json.field "allowedRegions", channel.allowed_regions
json.field "latestVideos" do
json.array do
videos.each do |video|
video.to_json(locale, config, Kemal.config, json)
end
end
end
json.field "relatedChannels" do
json.array do
channel.related_channels.each do |related_channel|
json.object do
json.field "author", related_channel.author
json.field "authorId", related_channel.ucid
json.field "authorUrl", related_channel.author_url
json.field "authorThumbnails" do
json.array do
qualities = {32, 48, 76, 100, 176, 512}
qualities.each do |quality|
json.object do
json.field "url", related_channel.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
json.field "width", quality
json.field "height", quality
end
end
end
end
end
end
end
end
end
end
end
{"/api/v1/channels/:ucid/videos", "/api/v1/channels/videos/:ucid"}.each do |route|
get route do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
page = env.params.query["page"]?.try &.to_i?
page ||= 1
sort_by = env.params.query["sort"]?.try &.downcase
sort_by ||= env.params.query["sort_by"]?.try &.downcase
sort_by ||= "newest"
begin
channel = get_about_info(ucid, locale)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
begin
videos, count = get_60_videos(channel.ucid, channel.author, page, channel.auto_generated, sort_by)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
JSON.build do |json|
json.array do
videos.each do |video|
video.to_json(locale, config, Kemal.config, json)
end
end
end
end
end
{"/api/v1/channels/:ucid/latest", "/api/v1/channels/latest/:ucid"}.each do |route|
get route do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
begin
videos = get_latest_videos(ucid)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
JSON.build do |json|
json.array do
videos.each do |video|
video.to_json(locale, config, Kemal.config, json)
end
end
end
end
end
{"/api/v1/channels/:ucid/playlists", "/api/v1/channels/playlists/:ucid"}.each do |route|
get route do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
continuation = env.params.query["continuation"]?
sort_by = env.params.query["sort"]?.try &.downcase
sort_by ||= env.params.query["sort_by"]?.try &.downcase
sort_by ||= "last"
begin
channel = get_about_info(ucid, locale)
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
items, continuation = fetch_channel_playlists(channel.ucid, channel.author, channel.auto_generated, continuation, sort_by)
JSON.build do |json|
json.object do
json.field "playlists" do
json.array do
items.each do |item|
if item.is_a?(SearchPlaylist)
item.to_json(locale, config, Kemal.config, json)
end
end
end
end
json.field "continuation", continuation
end
end
end
end
{"/api/v1/channels/:ucid/comments", "/api/v1/channels/comments/:ucid"}.each do |route|
get route do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
thin_mode = env.params.query["thin_mode"]?
thin_mode = thin_mode == "true"
format = env.params.query["format"]?
format ||= "json"
continuation = env.params.query["continuation"]?
# sort_by = env.params.query["sort_by"]?.try &.downcase
begin
fetch_channel_community(ucid, continuation, locale, config, Kemal.config, format, thin_mode)
rescue ex
env.response.status_code = 400
error_message = {"error" => ex.message}.to_json
next error_message
end
end
end
get "/api/v1/channels/search/:ucid" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
ucid = env.params.url["ucid"]
query = env.params.query["q"]?
query ||= ""
page = env.params.query["page"]?.try &.to_i?
page ||= 1
count, search_results = channel_search(query, page, ucid)
JSON.build do |json|
json.array do
search_results.each do |item|
item.to_json(locale, config, Kemal.config, json)
end
end
end
end
get "/api/v1/search" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
region = env.params.query["region"]?
env.response.content_type = "application/json"
query = env.params.query["q"]?
query ||= ""
page = env.params.query["page"]?.try &.to_i?
page ||= 1
sort_by = env.params.query["sort_by"]?.try &.downcase
sort_by ||= "relevance"
date = env.params.query["date"]?.try &.downcase
date ||= ""
duration = env.params.query["duration"]?.try &.downcase
duration ||= ""
features = env.params.query["features"]?.try &.split(",").map { |feature| feature.downcase }
features ||= [] of String
content_type = env.params.query["type"]?.try &.downcase
content_type ||= "video"
begin
search_params = produce_search_params(sort_by, date, content_type, duration, features)
rescue ex
env.response.status_code = 400
error_message = {"error" => ex.message}.to_json
next error_message
end
count, search_results = search(query, page, search_params, region).as(Tuple)
JSON.build do |json|
json.array do
search_results.each do |item|
item.to_json(locale, config, Kemal.config, json)
end
end
end
end
get "/api/v1/search/suggestions" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
region = env.params.query["region"]?
env.response.content_type = "application/json"
query = env.params.query["q"]?
query ||= ""
begin
client = make_client(URI.parse("https://suggestqueries.google.com"))
response = client.get("/complete/search?hl=en&gl=#{region}&client=youtube&ds=yt&q=#{URI.escape(query)}&callback=suggestCallback").body
body = response[35..-2]
body = JSON.parse(body).as_a
suggestions = body[1].as_a[0..-2]
JSON.build do |json|
json.object do
json.field "query", body[0].as_s
json.field "suggestions" do
json.array do
suggestions.each do |suggestion|
json.string suggestion[0].as_s
end
end
end
end
end
rescue ex
env.response.status_code = 500
error_message = {"error" => ex.message}.to_json
next error_message
end
end
get "/api/v1/playlists/:plid" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
plid = env.params.url["plid"]
page = env.params.query["page"]?.try &.to_i?
page ||= 1
format = env.params.query["format"]?
format ||= "json"
continuation = env.params.query["continuation"]?
if plid.starts_with? "RD"
next env.redirect "/api/v1/mixes/#{plid}"
end
begin
playlist = fetch_playlist(plid, locale)
rescue ex
error_message = {"error" => "Playlist is empty"}.to_json
env.response.status_code = 410
next error_message
end
begin
videos = fetch_playlist_videos(plid, page, playlist.video_count, continuation, locale)
rescue ex
videos = [] of PlaylistVideo
end
response = JSON.build do |json|
json.object do
json.field "type", "playlist"
json.field "title", playlist.title
json.field "playlistId", playlist.id
json.field "playlistThumbnail", playlist.thumbnail
json.field "author", playlist.author
json.field "authorId", playlist.ucid
json.field "authorUrl", "/channel/#{playlist.ucid}"
json.field "authorThumbnails" do
json.array do
qualities = {32, 48, 76, 100, 176, 512}
qualities.each do |quality|
json.object do
json.field "url", playlist.author_thumbnail.gsub(/=\d+/, "=s#{quality}")
json.field "width", quality
json.field "height", quality
end
end
end
end
json.field "description", html_to_content(playlist.description_html)
json.field "descriptionHtml", playlist.description_html
json.field "videoCount", playlist.video_count
json.field "viewCount", playlist.views
json.field "updated", playlist.updated.to_unix
json.field "videos" do
json.array do
videos.each do |video|
video.to_json(locale, config, Kemal.config, json)
end
end
end
end
end
if format == "html"
response = JSON.parse(response)
playlist_html = template_playlist(response)
next_video = response["videos"].as_a[1]?.try &.["videoId"]
response = {
"playlistHtml" => playlist_html,
"nextVideo" => next_video,
}.to_json
end
response
end
get "/api/v1/mixes/:rdid" do |env|
locale = LOCALES[env.get("preferences").as(Preferences).locale]?
env.response.content_type = "application/json"
rdid = env.params.url["rdid"]
continuation = env.params.query["continuation"]?
continuation ||= rdid.lchop("RD")[0, 11]
format = env.params.query["format"]?
format ||= "json"
begin
mix = fetch_mix(rdid, continuation, locale: locale)
if !rdid.ends_with? continuation
mix = fetch_mix(rdid, mix.videos[1].id)
index = mix.videos.index(mix.videos.select { |video| video.id == continuation }[0]?)
end
index ||= 0
mix.videos = mix.videos[index..-1]
rescue ex
error_message = {"error" => ex.message}.to_json
env.response.status_code = 500
next error_message
end
response = JSON.build do |json|
json.object do
json.field "title", mix.title
json.field "mixId", mix.id
json.field "videos" do
json.array do
mix.videos.each do |video|
json.object do
json.field "title", video.title
json.field "videoId", video.id
json.field "author", video.author
json.field "authorId", video.ucid
json.field "authorUrl", "/channel/#{video.ucid}"
json.field "videoThumbnails" do
json.array do
generate_thumbnails(json, video.id, config, Kemal.config)
end
end
json.field "index", video.index
json.field "lengthSeconds", video.length_seconds
end
end
end
end
end
end
if format == "html"
response = JSON.parse(response)
playlist_html = template_mix(response)
next_video = response["videos"].as_a[1]?.try &.["videoId"]
next_video ||= ""
response = {
"playlistHtml" => playlist_html,
"nextVideo" => next_video,
}.to_json
end
response
end
get "/api/manifest/dash/id/videoplayback" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.redirect "/videoplayback?#{env.params.query}"
end
get "/api/manifest/dash/id/videoplayback/*" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.redirect env.request.path.lchop("/api/manifest/dash/id")
end
get "/api/manifest/dash/id/:id" do |env|
env.response.headers.add("Access-Control-Allow-Origin", "*")
env.response.content_type = "application/dash+xml"
local = env.params.query["local"]?.try &.== "true"
id = env.params.url["id"]
region = env.params.query["region"]?
# Since some implementations create playlists based on resolution regardless of different codecs,
# we can opt to only add a source to a representation if it has a unique height within that representation
unique_res = env.params.query["unique_res"]? && (env.params.query["unique_res"] == "true" || env.params.query["unique_res"] == "1")
client = make_client(YT_URL)
begin
video = fetch_video(id, region)
rescue ex : VideoRedirect
url = "/api/manifest/dash/id/#{ex.message}"
if env.params.query
url += "?#{env.params.query}"
end
next env.redirect url
rescue ex
env.response.status_code = 403
next
end
if dashmpd = video.player_response["streamingData"]?.try &.["dashManifestUrl"]?.try &.as_s
manifest = client.get(dashmpd).body
manifest = manifest.gsub(/<BaseURL>[^<]+<\/BaseURL>/) do |baseurl|
url = baseurl.lchop("<BaseURL>")
url = url.rchop("</BaseURL>")
if local
url = URI.parse(url).full_path
end
"<BaseURL>#{url}</BaseURL>"
end
next manifest
end
adaptive_fmts = video.adaptive_fmts(decrypt_function)
if local
adaptive_fmts.each do |fmt|
fmt["url"] = URI.parse(fmt["url"]).full_path
end
end
audio_streams = video.audio_streams(adaptive_fmts)
video_streams = video.video_streams(adaptive_fmts).sort_by { |stream| stream["fps"].to_i }.reverse
XML.build(indent: " ", encoding: "UTF-8") do |xml|
xml.element("MPD", "xmlns": "urn:mpeg:dash:schema:mpd:2011",
"profiles": "urn:mpeg:dash:profile:full:2011", minBufferTime: "PT1.5S", type: "static",
mediaPresentationDuration: "PT#{video.length_seconds}S") do
xml.element("Period") do
i = 0
{"audio/mp4", "audio/webm"}.each do |mime_type|
mime_streams = audio_streams.select { |stream| stream["type"].starts_with? mime_type }
if mime_streams.empty?
next
end
xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true) do
mime_streams.each do |fmt|
codecs = fmt["type"].split("codecs=")[1].strip('"')
bandwidth = fmt["bitrate"].to_i * 1000
itag = fmt["itag"]
url = fmt["url"]
xml.element("Representation", id: fmt["itag"], codecs: codecs, bandwidth: bandwidth) do
xml.element("AudioChannelConfiguration", schemeIdUri: "urn:mpeg:dash:23003:3:audio_channel_configuration:2011",
value: "2")
xml.element("BaseURL") { xml.text url }
xml.element("SegmentBase", indexRange: fmt["index"]) do
xml.element("Initialization", range: fmt["init"])
end
end
end
end
i += 1
end
{"video/mp4", "video/webm"}.each do |mime_type|
mime_streams = video_streams.select { |stream| stream["type"].starts_with? mime_type }
if mime_streams.empty?
next
end
heights = [] of Int32
xml.element("AdaptationSet", id: i, mimeType: mime_type, startWithSAP: 1, subsegmentAlignment: true, scanType: "progressive") do
mime_streams.each do |fmt|
codecs = fmt["type"].split("codecs=")[1].strip('"')
bandwidth = fmt["bitrate"]
itag = fmt["itag"]
url = fmt["url"]
width, height = fmt["size"].split("x").map { |i| i.to_i }
# Resolutions reported by YouTube player (may not accurately reflect source)
height = [4320, 2160, 1440, 1080, 720, 480, 360, 240, 144].sort_by { |i| (height - i).abs }[0]
next if unique_res && heights.includes? height
heights << height
xml.element("Representation", id: itag, codecs: codecs, width: width, height: height,
startWithSAP: "1", maxPlayoutRate: "1",
bandwidth: bandwidth, frameRate: fmt["fps"]) do
xml.element("BaseURL") { xml.text url }
xml.element("SegmentBase", indexRange: fmt["index"]) do
xml.element("Initialization", range: fmt["init"])
end
end
end
end
i += 1
end
end
end
end
end
get "/api/manifest/hls_variant/*" do |env|
client = make_client(YT_URL)
manifest = client.get(env.request.path)
if manifest.status_code != 200
env.response.status_code = manifest.status_code
next
end
local = env.params.query["local"]?.try &.== "true"
env.response.content_type = "application/x-mpegURL"
env.response.headers.add("Access-Control-Allow-Origin", "*")
host_url = make_host_url(config, Kemal.config)
manifest = manifest.body
if local
manifest = manifest.gsub("https://www.youtube.com", host_url)
manifest = manifest.gsub("index.m3u8", "index.m3u8?local=true")
end
manifest
end
get "/api/manifest/hls_playlist/*" do |env|
client = make_client(YT_URL)
manifest = client.get(env.request.path)
if manifest.status_code != 200
env.response.status_code = manifest.status_code
next
end
local = env.params.query["local"]?.try &.== "true"
env.response.content_type = "application/x-mpegURL"
env.response.headers.add("Access-Control-Allow-Origin", "*")
host_url = make_host_url(config, Kemal.config)
manifest = manifest.body
if local
manifest = manifest.gsub(/^https:\/\/r\d---.{11}\.c\.youtube\.com[^\n]*/m) do |match|
path = URI.parse(match).path
path = path.lchop("/videoplayback/")
path = path.rchop("/")
path = path.gsub(/mime\/\w+\/\w+/) do |mimetype|
mimetype = mimetype.split("/")
mimetype[0] + "/" + mimetype[1] + "%2F" + mimetype[2]
end
path = path.split("/")
raw_params = {} of String => Array(String)
path.each_slice(2) do |pair|
key, value = pair
value = URI.unescape(value)
if raw_params[key]?
raw_params[key] << value
else
raw_params[key] = [value]
end
end
raw_params = HTTP::Params.new(raw_params)
if fvip = raw_params["hls_chunk_host"].match(/r(?<fvip>\d+)---/)
raw_params["fvip"] = fvip["fvip"]
end
raw_params["local"] = "true"
"#{host_url}/videoplayback?#{raw_params}"
end
end
manifest
end
# YouTube /videoplayback links expire after 6 hours,
# so we have a mechanism here to redirect to the latest version
get "/latest_version" do |env|
if env.params.query["download_widget"]?
download_widget = JSON.parse(env.params.query["download_widget"])
id = download_widget["id"].as_s
title = download_widget["title"].as_s
if label = download_widget["label"]?
env.redirect "/api/v1/captions/#{id}?label=#{label}&title=#{title}"
next
else
itag = download_widget["itag"].as_s
local = "true"
end
end
id ||= env.params.query["id"]?
itag ||= env.params.query["itag"]?
region = env.params.query["region"]?
local ||= env.params.query["local"]?
local ||= "false"
local = local == "true"
if !id || !itag
env.response.status_code = 400
next
end
video = fetch_video(id, region)
fmt_stream = video.fmt_stream(decrypt_function)
adaptive_fmts = video.adaptive_fmts(decrypt_function)
urls = (fmt_stream + adaptive_fmts).select { |fmt| fmt["itag"] == itag }
if urls.empty?
env.response.status_code = 404
next
elsif urls.size > 1
env.response.status_code = 409
next
end
url = urls[0]["url"]
if local
url = URI.parse(url).full_path.not_nil!
end
if title
url += "&title=#{title}"
end
env.redirect url
end
options "/videoplayback" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
end
options "/videoplayback/*" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
end
options "/api/manifest/dash/id/videoplayback" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
end
options "/api/manifest/dash/id/videoplayback/*" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
end
get "/videoplayback/*" do |env|
path = env.request.path
path = path.lchop("/videoplayback/")
path = path.rchop("/")
path = path.gsub(/mime\/\w+\/\w+/) do |mimetype|
mimetype = mimetype.split("/")
mimetype[0] + "/" + mimetype[1] + "%2F" + mimetype[2]
end
path = path.split("/")
raw_params = {} of String => Array(String)
path.each_slice(2) do |pair|
key, value = pair
value = URI.unescape(value)
if raw_params[key]?
raw_params[key] << value
else
raw_params[key] = [value]
end
end
query_params = HTTP::Params.new(raw_params)
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.redirect "/videoplayback?#{query_params}"
end
get "/videoplayback" do |env|
query_params = env.params.query
fvip = query_params["fvip"]? || "3"
mns = query_params["mn"]?.try &.split(",")
mns ||= [] of String
if query_params["region"]?
region = query_params["region"]
query_params.delete("region")
end
if query_params["host"]? && !query_params["host"].empty?
host = "https://#{query_params["host"]}"
query_params.delete("host")
else
host = "https://r#{fvip}---#{mns.pop}.googlevideo.com"
end
url = "/videoplayback?#{query_params.to_s}"
headers = HTTP::Headers.new
REQUEST_HEADERS_WHITELIST.each do |header|
if env.request.headers[header]?
headers[header] = env.request.headers[header]
end
end
response = HTTP::Client::Response.new(403)
5.times do
begin
client = make_client(URI.parse(host), region)
response = client.head(url, headers)
break
rescue Socket::Addrinfo::Error
if !mns.empty?
mn = mns.pop
end
fvip = "3"
host = "https://r#{fvip}---#{mn}.googlevideo.com"
rescue ex
end
end
if response.headers["Location"]?
url = URI.parse(response.headers["Location"])
host = url.host
env.response.headers["Access-Control-Allow-Origin"] = "*"
url = url.full_path
url += "&host=#{host}"
if region
url += "&region=#{region}"
end
next env.redirect url
end
if response.status_code >= 400
env.response.status_code = response.status_code
next
end
if url.includes? "&file=seg.ts"
if CONFIG.disabled?("livestreams")
env.response.status_code = 403
error_message = "Administrator has disabled this endpoint."
next error_message
end
begin
client = make_client(URI.parse(host), region)
client.get(url, headers) do |response|
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes?(key)
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if location = response.headers["Location"]?
location = URI.parse(location)
location = "#{location.full_path}&host=#{location.host}"
if region
location += "&region=#{region}"
end
next env.redirect location
end
IO.copy(response.body_io, env.response)
end
rescue ex
end
else
if query_params["title"]? && CONFIG.disabled?("downloads") ||
CONFIG.disabled?("dash")
env.response.status_code = 403
error_message = "Administrator has disabled this endpoint."
next error_message
end
content_length = nil
first_chunk = true
range_start, range_end = parse_range(env.request.headers["Range"]?)
chunk_start = range_start
chunk_end = range_end
if !chunk_end || chunk_end - chunk_start > HTTP_CHUNK_SIZE
chunk_end = chunk_start + HTTP_CHUNK_SIZE - 1
end
# TODO: Record bytes written so we can restart after a chunk fails
while true
if !range_end && content_length
range_end = content_length
end
if range_end && chunk_start > range_end
break
end
if range_end && chunk_end > range_end
chunk_end = range_end
end
headers["Range"] = "bytes=#{chunk_start}-#{chunk_end}"
begin
client = make_client(URI.parse(host), region)
client.get(url, headers) do |response|
if first_chunk
if !env.request.headers["Range"]? && response.status_code == 206
env.response.status_code = 200
else
env.response.status_code = response.status_code
end
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes?(key) && key != "Content-Range"
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if location = response.headers["Location"]?
location = URI.parse(location)
location = "#{location.full_path}&host=#{location.host}"
if region
location += "&region=#{region}"
end
env.redirect location
break
end
if title = query_params["title"]?
# https://blog.fastmail.com/2011/06/24/download-non-english-filenames/
env.response.headers["Content-Disposition"] = "attachment; filename=\"#{URI.escape(title)}\"; filename*=UTF-8''#{URI.escape(title)}"
end
if !response.headers.includes_word?("Transfer-Encoding", "chunked")
content_length = response.headers["Content-Range"].split("/")[-1].to_i64
if env.request.headers["Range"]?
env.response.headers["Content-Range"] = "bytes #{range_start}-#{range_end || (content_length - 1)}/#{content_length}"
env.response.content_length = ((range_end.try &.+ 1) || content_length) - range_start
else
env.response.content_length = content_length
end
end
end
proxy_file(response, env)
end
rescue ex
if ex.message != "Error reading socket: Connection reset by peer"
break
end
end
chunk_start = chunk_end + 1
chunk_end += HTTP_CHUNK_SIZE
first_chunk = false
end
end
end
# We need this so the below route works as expected
get "/ggpht*" do |env|
end
get "/ggpht/*" do |env|
host = "https://yt3.ggpht.com"
client = make_client(URI.parse(host))
url = env.request.path.lchop("/ggpht")
headers = HTTP::Headers.new
REQUEST_HEADERS_WHITELIST.each do |header|
if env.request.headers[header]?
headers[header] = env.request.headers[header]
end
end
begin
client.get(url, headers) do |response|
env.response.status_code = response.status_code
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes? key
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if response.status_code >= 300
env.response.headers.delete("Transfer-Encoding")
break
end
proxy_file(response, env)
end
rescue ex
end
end
options "/sb/:id/:storyboard/:index" do |env|
env.response.headers.delete("Content-Type")
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET, OPTIONS"
env.response.headers["Access-Control-Allow-Headers"] = "Content-Type, Range"
end
get "/sb/:id/:storyboard/:index" do |env|
id = env.params.url["id"]
storyboard = env.params.url["storyboard"]
index = env.params.url["index"]
if storyboard.starts_with? "storyboard_live"
host = "https://i.ytimg.com"
else
host = "https://i9.ytimg.com"
end
client = make_client(URI.parse(host))
url = "/sb/#{id}/#{storyboard}/#{index}?#{env.params.query}"
headers = HTTP::Headers.new
REQUEST_HEADERS_WHITELIST.each do |header|
if env.request.headers[header]?
headers[header] = env.request.headers[header]
end
end
begin
client.get(url, headers) do |response|
env.response.status_code = response.status_code
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes? key
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if response.status_code >= 300
env.response.headers.delete("Transfer-Encoding")
break
end
proxy_file(response, env)
end
rescue ex
end
end
get "/s_p/:id/:name" do |env|
id = env.params.url["id"]
name = env.params.url["name"]
host = "https://i9.ytimg.com"
client = make_client(URI.parse(host))
url = env.request.resource
headers = HTTP::Headers.new
REQUEST_HEADERS_WHITELIST.each do |header|
if env.request.headers[header]?
headers[header] = env.request.headers[header]
end
end
begin
client.get(url, headers) do |response|
env.response.status_code = response.status_code
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes? key
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if response.status_code >= 300 && response.status_code != 404
env.response.headers.delete("Transfer-Encoding")
break
end
proxy_file(response, env)
end
rescue ex
end
end
get "/vi/:id/:name" do |env|
id = env.params.url["id"]
name = env.params.url["name"]
host = "https://i.ytimg.com"
client = make_client(URI.parse(host))
if name == "maxres.jpg"
build_thumbnails(id, config, Kemal.config).each do |thumb|
if client.head("/vi/#{id}/#{thumb[:url]}.jpg").status_code == 200
name = thumb[:url] + ".jpg"
break
end
end
end
url = "/vi/#{id}/#{name}"
headers = HTTP::Headers.new
REQUEST_HEADERS_WHITELIST.each do |header|
if env.request.headers[header]?
headers[header] = env.request.headers[header]
end
end
begin
client.get(url, headers) do |response|
env.response.status_code = response.status_code
response.headers.each do |key, value|
if !RESPONSE_HEADERS_BLACKLIST.includes? key
env.response.headers[key] = value
end
end
env.response.headers["Access-Control-Allow-Origin"] = "*"
if response.status_code >= 300 && response.status_code != 404
env.response.headers.delete("Transfer-Encoding")
break
end
proxy_file(response, env)
end
rescue ex
end
end
error 404 do |env|
env.response.content_type = "application/json"
error_message = "404 Not Found"
{"error" => error_message}.to_json
end
error 500 do |env|
env.response.content_type = "application/json"
error_message = "500 Server Error"
{"error" => error_message}.to_json
end
# Add redirect if SSL is enabled
if Kemal.config.ssl
spawn do
server = HTTP::Server.new do |env|
redirect_url = "https://#{env.request.host}#{env.request.path}"
if env.request.query
redirect_url += "?#{env.request.query}"
end
if config.hsts
env.response.headers["Strict-Transport-Security"] = "max-age=31536000; includeSubDomains; preload"
end
env.response.headers["Location"] = redirect_url
env.response.status_code = 301
end
server.bind_tcp "0.0.0.0", 80
server.listen
end
end
Kemal.config.powered_by_header = false
add_handler FilteredCompressHandler.new
add_handler APIHandler.new
add_handler DenyFrame.new
add_context_storage_type(Array(String))
add_context_storage_type(Preferences)
add_context_storage_type(User)
Kemal.config.logger = logger
Kemal.run