invidious/src/invidious.cr

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# "Invidious" (which is what YouTube should be)
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# Copyright (C) 2018 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/>.
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require "detect_language"
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require "kemal"
require "option_parser"
require "pg"
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require "xml"
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require "yaml"
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require "./helpers"
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require "./cookie_fix"
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CONFIG = Config.from_yaml(File.read("config/config.yml"))
pool_size = CONFIG.pool_size
threads = CONFIG.threads
channel_threads = CONFIG.channel_threads
Kemal.config.extra_options do |parser|
parser.banner = "Usage: invidious [arguments]"
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parser.on("-z SIZE", "--youtube-pool=SIZE", "Number of clients in youtube pool (default: #{pool_size})") do |number|
begin
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pool_size = number.to_i
rescue ex
puts "SIZE must be integer"
exit
end
end
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parser.on("-t THREADS", "--youtube-threads=THREADS", "Number of threads for crawling (default: #{threads})") do |number|
begin
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threads = number.to_i
rescue ex
puts "THREADS must be integer"
exit
end
end
parser.on("-c THREADS", "--channel-threads=THREADS", "Number of threads for refreshing channels (default: #{channel_threads})") do |number|
begin
channel_threads = number.to_i
rescue ex
puts "THREADS must be integer"
exit
end
end
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end
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Kemal::CLI.new
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PG_URL = URI.new(
scheme: "postgres",
user: CONFIG.db[:user],
password: CONFIG.db[:password],
host: CONFIG.db[:host],
port: CONFIG.db[:port],
path: CONFIG.db[:dbname],
)
PG_DB = DB.open PG_URL
YT_URL = URI.parse("https://www.youtube.com")
REDDIT_URL = URI.parse("https://api.reddit.com")
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LOGIN_URL = URI.parse("https://accounts.google.com")
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youtube_pool = Deque.new(pool_size) do
make_client(YT_URL)
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end
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# Refresh youtube_pool by crawling YT
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threads.times do
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spawn do
ids = Deque(String).new
random = Random.new
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client = get_client(youtube_pool)
search(random.base64(3), client) do |id|
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ids << id
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end
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youtube_pool << client
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loop do
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client = get_client(youtube_pool)
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if ids.empty?
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search(random.base64(3), client) do |id|
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ids << id
end
end
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begin
id = ids[0]
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video = get_video(id, client, PG_DB)
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rescue ex
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STDOUT << id << " : " << ex.message << "\n"
youtube_pool << make_client(YT_URL)
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next
ensure
ids.delete(id)
end
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rvs = [] of Hash(String, String)
if video.info.has_key?("rvs")
video.info["rvs"].split(",").each do |rv|
rvs << HTTP::Params.parse(rv).to_h
end
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end
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rvs.each do |rv|
if rv.has_key?("id") && !PG_DB.query_one?("SELECT EXISTS (SELECT true FROM videos WHERE id = $1)", rv["id"], as: Bool)
ids.delete(id)
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ids << rv["id"]
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if ids.size == 150
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ids.shift
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end
end
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end
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youtube_pool << client
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end
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end
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end
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channel_threads.times do |i|
spawn do
loop do
query = "SELECT id FROM channels ORDER BY updated \
LIMIT (SELECT count(*)/$2 FROM channels) \
OFFSET (SELECT count(*)*$1/$2 FROM channels)"
PG_DB.query(query, i, channel_threads) do |rs|
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rs.each do
client = get_client(youtube_pool)
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begin
id = rs.read(String)
channel = get_channel(id, client, PG_DB)
rescue ex
STDOUT << id << " : " << ex.message << "\n"
youtube_pool << make_client(YT_URL)
next
end
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youtube_pool << client
end
end
end
end
end
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top_videos = [] of Video
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spawn do
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if CONFIG.dl_api_key
DetectLanguage.configure do |config|
config.api_key = CONFIG.dl_api_key.not_nil!
end
filter = true
else
filter = false
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end
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loop do
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begin
top = rank_videos(PG_DB, 40, youtube_pool, filter)
rescue ex
next
end
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if top.size > 0
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args = arg_array(top)
else
next
end
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videos = [] of Video
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top.each do |id|
client = get_client(youtube_pool)
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begin
videos << get_video(id, client, PG_DB)
rescue ex
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next
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end
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youtube_pool << client
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end
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top_videos = videos
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Fiber.yield
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end
end
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before_all do |env|
if env.request.cookies.has_key?("SID")
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env.set "authorized", true
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sid = env.request.cookies["SID"].value
env.set "sid", sid
notifications = PG_DB.query_one?("SELECT cardinality(notifications) FROM users WHERE id = $1", sid, as: Int32)
notifications ||= 0
env.set "notifications", notifications
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end
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if env.request.cookies.has_key?("darktheme") && env.request.cookies["darktheme"].value == "true"
env.set "darktheme", true
end
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end
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get "/" do |env|
templated "index"
end
get "/watch" do |env|
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if env.params.query["v"]?
id = env.params.query["v"]
else
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next env.redirect "/"
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end
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video_start = env.params.query["start"]?.try &.to_i
video_start ||= 0
video_end = env.params.query["end"]?.try &.to_i
video_end ||= -1
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listen = false
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if env.params.query["listen"]? && env.params.query["listen"] == "true"
listen = true
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env.params.query.delete_all("listen")
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end
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client = get_client(youtube_pool)
authorized = env.get? "authorized"
if authorized
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sid = env.get("sid").as(String)
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subscriptions = PG_DB.query_one?("SELECT subscriptions FROM users WHERE id = $1", sid, as: Array(String))
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end
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subscriptions ||= [] of String
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begin
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video = get_video(id, client, PG_DB)
rescue ex
error_message = ex.message
next templated "error"
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ensure
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youtube_pool << client
end
fmt_stream = [] of HTTP::Params
video.info["url_encoded_fmt_stream_map"].split(",") do |string|
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if !string.empty?
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fmt_stream << HTTP::Params.parse(string)
end
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end
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adaptive_fmts = [] of HTTP::Params
if video.info.has_key?("adaptive_fmts")
video.info["adaptive_fmts"].split(",") do |string|
adaptive_fmts << HTTP::Params.parse(string)
end
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end
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if adaptive_fmts[0]? && adaptive_fmts[0]["s"]?
adaptive_fmts.each do |fmt|
fmt["url"] += "&signature=" + decrypt_signature(fmt["s"])
end
fmt_stream.each do |fmt|
fmt["url"] += "&signature=" + decrypt_signature(fmt["s"])
end
end
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fmt_stream.each { |s| s.add("label", "#{s["quality"]} - #{s["type"].split(";")[0].split("/")[1]}") }
fmt_stream = fmt_stream.uniq { |s| s["label"] }
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video_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("video") ? s : nil }
video_streams = video_streams.uniq { |s| s["size"] }
audio_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("audio") ? s : nil }
audio_streams.sort_by! { |s| s["bitrate"].to_i }.reverse!
audio_streams.each do |fmt|
fmt["bitrate"] = (fmt["bitrate"].to_f64/1000).to_i.to_s
end
rvs = [] of Hash(String, String)
if video.info.has_key?("rvs")
video.info["rvs"].split(",").each do |rv|
rvs << HTTP::Params.parse(rv).to_h
end
end
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rating = video.info["avg_rating"].to_f64
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engagement = ((video.dislikes.to_f + video.likes.to_f)/video.views * 100)
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if video.likes > 0 || video.dislikes > 0
calculated_rating = (video.likes.to_f/(video.likes.to_f + video.dislikes.to_f) * 4 + 1)
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else
calculated_rating = 0.0
end
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if video.info["ad_slots"]?
ad_slots = video.info["ad_slots"].split(",")
ad_slots = ad_slots.join(", ")
end
if video.info["enabled_engage_types"]?
engage_types = video.info["enabled_engage_types"].split(",")
engage_types = engage_types.join(", ")
end
if video.info["ad_tag"]?
ad_tag = URI.parse(video.info["ad_tag"])
ad_query = HTTP::Params.parse(ad_tag.query.not_nil!)
ad_category = URI.unescape(ad_query["iu"])
ad_category = ad_category.lstrip("/4061/").split(".")[-1]
ad_query = HTTP::Params.parse(ad_query["scp"])
k2 = URI.unescape(ad_query["k2"]).split(",")
k2 = k2.join(", ")
end
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reddit_client = make_client(REDDIT_URL)
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headers = HTTP::Headers{"User-Agent" => "web:invidio.us:v0.1.0 (by /u/omarroth)"}
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begin
reddit_comments, reddit_thread = get_reddit_comments(id, reddit_client, headers)
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reddit_html = template_comments(reddit_comments)
reddit_html = fill_links(reddit_html, "https", "www.reddit.com")
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reddit_html = add_alt_links(reddit_html)
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rescue ex
reddit_thread = nil
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reddit_html = ""
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end
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video.description = fill_links(video.description, "https", "www.youtube.com")
video.description = add_alt_links(video.description)
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thumbnail = "https://i.ytimg.com/vi/#{id}/mqdefault.jpg"
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templated "watch"
end
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get "/search" do |env|
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if env.params.query["q"]?
query = env.params.query["q"]
else
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next env.redirect "/"
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end
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page = env.params.query["page"]?.try &.to_i
page ||= 1
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client = get_client(youtube_pool)
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html = client.get("/results?q=#{URI.escape(query)}&page=#{page}&sp=EgIQAVAU").body
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html = XML.parse_html(html)
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youtube_pool << client
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videos = Array(Hash(String, String)).new
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html.xpath_nodes(%q(//ol[@class="item-section"]/li)).each do |item|
root = item.xpath_node(%q(div[contains(@class,"yt-lockup-video")]/div))
if root
video = {} of String => String
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id = root.xpath_node(%q(div[contains(@class,"yt-lockup-thumbnail")]/a/@href))
if id
id = id.content.lchop("/watch?v=")
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else
id = ""
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end
video["id"] = id
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title = root.xpath_node(%q(div[@class="yt-lockup-content"]/h3/a))
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if title
video["title"] = title.content
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else
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video["title"] = ""
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end
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author = root.xpath_node(%q(div[@class="yt-lockup-content"]/div/a))
if author
video["author"] = author.content
video["ucid_url"] = author["href"]
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else
video["author"] = ""
video["ucid_url"] = ""
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end
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videos << video
end
end
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templated "search"
end
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get "/login" do |env|
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referer = env.request.headers["referer"]?
referer ||= "/feed/subscriptions"
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templated "login"
end
# See https://github.com/rg3/youtube-dl/blob/master/youtube_dl/extractor/youtube.py#L79
post "/login" do |env|
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referer = env.params.query["referer"]?
referer ||= "/feed/subscriptions"
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email = env.params.body["email"]?
password = env.params.body["password"]?
begin
client = make_client(LOGIN_URL)
headers = HTTP::Headers.new
login_page = client.get("/ServiceLogin")
headers = login_page.cookies.add_request_headers(headers)
login_page = XML.parse_html(login_page.body)
inputs = {} of String => String
login_page.xpath_nodes(%q(//input[@type="submit"])).each do |node|
name = node["id"]? || node["name"]?
name ||= ""
value = node["value"]?
value ||= ""
if name != "" && value != ""
inputs[name] = value
end
end
login_page.xpath_nodes(%q(//input[@type="hidden"])).each do |node|
name = node["id"]? || node["name"]?
name ||= ""
value = node["value"]?
value ||= ""
if name != "" && value != ""
inputs[name] = value
end
end
lookup_req = %(["#{email}","#{inputs["session-state"]}",[],null,"US",null,null,2,false,true,[null,null,[2,1,null,1,"https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn",null,[],4,[]],1,[null,null,[]],null,null,null,true],"#{email}"])
headers["Content-Type"] = "application/x-www-form-urlencoded;charset=utf-8"
headers["Google-Accounts-XSRF"] = "1"
lookup_results = client.post("/_/signin/sl/lookup", headers, login_req(inputs, lookup_req))
headers = lookup_results.cookies.add_request_headers(headers)
lookup_results = lookup_results.body
lookup_results = lookup_results[5..-1]
lookup_results = JSON.parse(lookup_results)
user_hash = lookup_results[0][2]
challenge_req = %([#{user_hash},null,1,null,[1,null,null,null,[#{password},null,true]],[null,null,[2,1,null,1,"https://accounts.google.com/ServiceLogin?passive=true&continue=https%3A%2F%2Fwww.youtube.com%2Fsignin%3Fnext%3D%252F%26action_handle_signin%3Dtrue%26hl%3Den%26app%3Ddesktop%26feature%3Dsign_in_button&hl=en&service=youtube&uilel=3&requestPath=%2FServiceLogin&Page=PasswordSeparationSignIn", null,[],4],1,[null,null,[]],null,null,null,true]])
challenge_results = client.post("/_/signin/sl/challenge", headers, login_req(inputs, challenge_req))
headers = challenge_results.cookies.add_request_headers(headers)
challenge_results = challenge_results.body
challenge_results = challenge_results[5..-1]
challenge_results = JSON.parse(challenge_results)
login_res = challenge_results[0][13][2].to_s
login = client.get(login_res, headers)
headers = login.cookies.add_request_headers(headers)
login = client.get(login.headers["Location"], headers)
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headers = HTTP::Headers.new
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headers = login.cookies.add_request_headers(headers)
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sid = login.cookies["SID"].value
client = get_client(youtube_pool)
user = get_user(sid, client, headers, PG_DB)
youtube_pool << client
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# We are now logged in
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host = URI.parse(env.request.headers["Host"]).host
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login.cookies.each do |cookie|
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cookie.secure = false
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cookie.extension = cookie.extension.not_nil!.gsub(".youtube.com", host)
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cookie.extension = cookie.extension.not_nil!.gsub("Secure; ", "")
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end
login.cookies.add_response_headers(env.response.headers)
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env.redirect referer
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rescue ex
error_message = "Login failed"
next templated "error"
end
end
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get "/signout" do |env|
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referer = env.request.headers["referer"]?
referer ||= "/"
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env.request.cookies.each do |cookie|
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if cookie.name != "darktheme"
cookie.expires = Time.new(1990, 1, 1)
end
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end
env.request.cookies.add_response_headers(env.response.headers)
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env.redirect referer
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end
get "/redirect" do |env|
if env.params.query["q"]?
env.redirect env.params.query["q"]
else
env.redirect "/"
end
end
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# Return dash manifest for the given video ID
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"
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id = env.params.url["id"]
yt_client = get_client(youtube_pool)
begin
video = get_video(id, yt_client, PG_DB)
rescue ex
halt env, status_code: 403
ensure
youtube_pool << yt_client
end
adaptive_fmts = [] of HTTP::Params
if video.info.has_key?("adaptive_fmts")
video.info["adaptive_fmts"].split(",") do |string|
adaptive_fmts << HTTP::Params.parse(string)
end
else
halt env, status_code: 403
end
if local
adaptive_fmts.each do |fmt|
if Kemal.config.ssl
scheme = "https://"
end
scheme ||= "http://"
fmt["url"] = scheme + env.request.headers["Host"] + URI.parse(fmt["url"]).full_path
end
end
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if adaptive_fmts[0]? && adaptive_fmts[0]["s"]?
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adaptive_fmts.each do |fmt|
fmt["url"] += "&signature=" + decrypt_signature(fmt["s"])
end
end
video_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("video/mp4") ? s : nil }
audio_streams = adaptive_fmts.compact_map { |s| s["type"].starts_with?("audio/mp4") ? s : nil }
audio_streams.sort_by! { |s| s["bitrate"].to_i }.reverse!
audio_streams.each do |fmt|
fmt["bitrate"] = (fmt["bitrate"].to_f64/1000).to_i.to_s
end
manifest = XML.build(indent: " ", encoding: "UTF-8") do |xml|
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xml.element("MPD", "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance", "xsi:schemaLocation": "urn:mpeg:DASH:schema:MPD:2011 DASH-MPD.xsd",
xmlns: "urn:mpeg:dash:schema:mpd:2011", profiles: "urn:mpeg:dash:profile:isoff-main:2011",
mediaPresentationDuration: "PT#{video.info["length_seconds"]}S", minBufferTime: "PT2S", type: "static") do
xml.element("Period") do
xml.element("AdaptationSet", id: 0, mimeType: "audio/mp4", subsegmentAlignment: true) do
xml.element("Role", schemeIdUri: "urn:mpeg:DASH:role:2011", value: "main")
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audio_streams.each do |fmt|
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mimetype, codecs = fmt["type"].split(";")
codecs = codecs[9..-2]
fmt_type = mimetype.split("/")[0]
bandwidth = fmt["bitrate"]
itag = fmt["itag"]
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url = fmt["url"]
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xml.element("Representation", id: fmt["itag"], codecs: codecs, bandwidth: bandwidth) do
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xml.element("BaseURL") { xml.text url }
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xml.element("SegmentBase", indexRange: fmt["init"]) do
xml.element("Initialization", range: fmt["index"])
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end
end
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end
end
xml.element("AdaptationSet", id: 1, mimeType: "video/mp4", subsegmentAlignment: true) do
xml.element("Role", schemeIdUri: "urn:mpeg:DASH:role:2011", value: "main")
video_streams.each do |fmt|
mimetype, codecs = fmt["type"].split(";")
codecs = codecs[9..-2]
fmt_type = mimetype.split("/")[0]
bandwidth = fmt["bitrate"]
itag = fmt["itag"]
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url = fmt["url"]
height, width = fmt["size"].split("x")
xml.element("Representation", id: itag, codecs: codecs, width: width, height: height, bandwidth: bandwidth, frameRate: fmt["fps"]) do
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xml.element("BaseURL") { xml.text url }
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xml.element("SegmentBase", indexRange: fmt["init"]) do
xml.element("Initialization", range: fmt["index"])
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end
end
end
end
end
end
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end
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manifest = manifest.gsub(%(<?xml version="1.0" encoding="UTF-8U"?>), %(<?xml version="1.0" encoding="UTF-8"?>))
manifest = manifest.gsub(%(<?xml version="1.0" encoding="UTF-8V"?>), %(<?xml version="1.0" encoding="UTF-8"?>))
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manifest
end
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# Get subscriptions for authorized user
get "/feed/subscriptions" do |env|
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authorized = env.get? "authorized"
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if authorized
max_results = env.params.query["maxResults"]?.try &.to_i
max_results ||= 40
page = env.params.query["page"]?.try &.to_i
page ||= 1
headers = HTTP::Headers.new
headers["Cookie"] = env.request.headers["Cookie"]
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sid = env.get("sid").as(String)
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client = get_client(youtube_pool)
user = get_user(sid, client, headers, PG_DB)
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youtube_pool << client
args = arg_array(user.subscriptions, 3)
offset = (page - 1) * max_results
videos = PG_DB.query_all("SELECT * FROM channel_videos WHERE ucid IN (#{args}) \
ORDER BY published DESC LIMIT $1 OFFSET $2", [max_results, offset] + user.subscriptions, as: ChannelVideo)
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PG_DB.exec("UPDATE users SET notifications = $1 WHERE id = $2", [] of String, sid)
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env.set "notifications", 0
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templated "subscriptions"
else
env.redirect "/"
end
end
# Function that is useful if you have multiple channels that don't have
# the "bell dinged". Request parameters are fairly self-explanatory,
# receive_all_updates = true and receive_post_updates = true will "ding" all
# channels. Calling /modify_notifications without any arguments will
# request all notifications from all channels.
# /modify_notifications?receive_all_updates=false&receive_no_updates=false
# will "unding" all subscriptions.
get "/modify_notifications" do |env|
authorized = env.get? "authorized"
referer = env.request.headers["referer"]?
referer ||= "/"
if authorized
channel_req = {} of String => String
channel_req["receive_all_updates"] = env.params.query["receive_all_updates"]? || "true"
channel_req["receive_no_updates"] = env.params.query["receive_no_updates"]? || ""
channel_req["receive_post_updates"] = env.params.query["receive_post_updates"]? || "true"
channel_req.reject! { |k, v| v != "true" && v != "false" }
headers = HTTP::Headers.new
headers["Cookie"] = env.request.headers["Cookie"]
client = get_client(youtube_pool)
subs = client.get("/subscription_manager?disable_polymer=1", headers)
headers["Cookie"] += "; " + subs.cookies.add_request_headers(headers)["Cookie"]
match = subs.body.match(/'XSRF_TOKEN': "(?<session_token>[A-Za-z0-9\_\-\=]+)"/)
if match
session_token = match["session_token"]
else
next env.redirect referer
end
channel_req["session_token"] = session_token
headers["content-type"] = "application/x-www-form-urlencoded"
subs = XML.parse_html(subs.body)
subs.xpath_nodes(%q(//a[@class="subscription-title yt-uix-sessionlink"]/@href)).each do |channel|
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channel_id = channel.content.lstrip("/channel/").not_nil!
channel_req["channel_id"] = channel_id
client.post("/subscription_ajax?action_update_subscription_preferences=1", headers, HTTP::Params.encode(channel_req)).body
end
youtube_pool << client
end
env.redirect referer
end
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get "/subscription_ajax" do |env|
authorized = env.get? "authorized"
referer = env.request.headers["referer"]?
referer ||= "/"
if authorized
if env.params.query["action_create_subscription_to_channel"]?
action = "action_create_subscription_to_channel"
elsif env.params.query["action_remove_subscriptions"]?
action = "action_remove_subscriptions"
else
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next env.redirect referer
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end
channel_id = env.params.query["c"]?
channel_id ||= ""
headers = HTTP::Headers.new
headers["Cookie"] = env.request.headers["Cookie"]
client = get_client(youtube_pool)
subs = client.get("/subscription_manager?disable_polymer=1", headers)
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headers["Cookie"] += "; " + subs.cookies.add_request_headers(headers)["Cookie"]
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match = subs.body.match(/'XSRF_TOKEN': "(?<session_token>[A-Za-z0-9\_\-\=]+)"/)
if match
session_token = match["session_token"]
else
next env.redirect "/"
end
headers["content-type"] = "application/x-www-form-urlencoded"
post_req = {
"session_token" => session_token,
}
post_req = HTTP::Params.encode(post_req)
post_url = "/subscription_ajax?#{action}=1&c=#{channel_id}"
# Update user
if client.post(post_url, headers, post_req).status_code == 200
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sid = env.get("sid").as(String)
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case action
when .starts_with? "action_create"
PG_DB.exec("UPDATE users SET subscriptions = array_append(subscriptions,$1) WHERE id = $2", channel_id, sid)
when .starts_with? "action_remove"
PG_DB.exec("UPDATE users SET subscriptions = array_remove(subscriptions,$1) WHERE id = $2", channel_id, sid)
end
end
youtube_pool << client
end
env.redirect referer
end
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get "/modify_theme" do |env|
referer = env.request.headers["referer"]?
referer ||= "/"
if env.params.query["dark"]?
env.response.cookies["darktheme"] = "true"
elsif env.params.query["light"]?
env.request.cookies["darktheme"].expires = Time.new(1990, 1, 1)
env.request.cookies.add_response_headers(env.response.headers)
end
env.redirect referer
end
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get "/videoplayback" do |env|
query_params = env.params.query
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fvip = query_params["fvip"]
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mn = query_params["mn"].split(",")[0]
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host = "https://r#{fvip}---#{mn}.googlevideo.com"
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url = "/videoplayback?#{query_params.to_s}"
client = make_client(URI.parse(host))
response = client.head(url)
headers = env.request.headers
headers.delete("Host")
headers.delete("Cookie")
headers.delete("User-Agent")
headers.delete("Referer")
client.get(url, headers) do |response|
if response.headers["Location"]?
url = URI.parse(response.headers["Location"])
env.redirect url.full_path
else
env.response.status_code = response.status_code
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response.headers.each do |key, value|
env.response.headers[key] = value
end
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env.response.headers["Access-Control-Allow-Origin"] = "*"
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chunk = Bytes[8]
loop do
count = response.body_io.read(chunk)
begin
env.response.write(chunk)
env.response.flush
rescue ex
break
end
end
end
end
end
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options "/videoplayback" do |env|
env.response.headers["Access-Control-Allow-Origin"] = "*"
env.response.headers["Access-Control-Allow-Methods"] = "GET"
end
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error 404 do |env|
error_message = "404 Page not found"
templated "error"
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end
error 500 do |env|
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error_message = "500 Server error"
templated "error"
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end
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# Add redirect if SSL is enabled
if Kemal.config.ssl
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spawn do
server = HTTP::Server.new("0.0.0.0", 80) do |context|
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redirect_url = "https://#{context.request.host}#{context.request.path}"
if context.request.query
redirect_url += "?#{context.request.query}"
end
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context.response.headers.add("Location", redirect_url)
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context.response.status_code = 301
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end
server.listen
end
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before_all do |env|
env.response.headers.add("Strict-Transport-Security", "max-age=31536000; includeSubDomains; preload")
end
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end
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static_headers do |response, filepath, filestat|
response.headers.add("Cache-Control", "max-age=86400")
end
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public_folder "assets"
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add_handler FilteredCompressHandler.new
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Kemal.run