335 行
11 KiB
Crystal
335 行
11 KiB
Crystal
require "crypto/bcrypt/password"
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class User
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module PreferencesConverter
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def self.from_rs(rs)
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begin
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Preferences.from_json(rs.read(String))
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rescue ex
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DEFAULT_USER_PREFERENCES
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end
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end
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end
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add_mapping({
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updated: Time,
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notifications: Array(String),
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subscriptions: Array(String),
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email: String,
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preferences: {
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type: Preferences,
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default: DEFAULT_USER_PREFERENCES,
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converter: PreferencesConverter,
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},
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password: String?,
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token: String,
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watched: Array(String),
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})
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end
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DEFAULT_USER_PREFERENCES = Preferences.from_json({
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"video_loop" => false,
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"autoplay" => false,
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"continue" => false,
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"local" => false,
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"listen" => false,
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"speed" => 1.0,
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"quality" => "hd720",
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"volume" => 100,
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"comments" => ["youtube", ""],
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"captions" => ["", "", ""],
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"related_videos" => true,
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"redirect_feed" => false,
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"locale" => "en-US",
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"dark_mode" => false,
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"thin_mode" => false,
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"max_results" => 40,
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"sort" => "published",
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"latest_only" => false,
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"unseen_only" => false,
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"notifications_only" => false,
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}.to_json)
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class Preferences
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module StringToArray
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def self.to_json(value : Array(String), json : JSON::Builder)
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json.array do
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value.each do |element|
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json.string element
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end
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end
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end
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def self.from_json(value : JSON::PullParser) : Array(String)
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begin
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result = [] of String
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value.read_array do
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result << value.read_string
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end
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rescue ex
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result = [value.read_string, ""]
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end
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result
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end
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end
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JSON.mapping({
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video_loop: Bool,
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autoplay: Bool,
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continue: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.continue,
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},
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local: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.local,
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},
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listen: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.listen,
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},
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speed: Float32,
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quality: String,
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volume: Int32,
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comments: {
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type: Array(String),
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default: DEFAULT_USER_PREFERENCES.comments,
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converter: StringToArray,
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},
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captions: {
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type: Array(String),
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default: DEFAULT_USER_PREFERENCES.captions,
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},
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redirect_feed: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.redirect_feed,
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},
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related_videos: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.related_videos,
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},
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dark_mode: Bool,
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thin_mode: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.thin_mode,
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},
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max_results: Int32,
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sort: String,
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latest_only: Bool,
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unseen_only: Bool,
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notifications_only: {
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type: Bool,
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default: DEFAULT_USER_PREFERENCES.notifications_only,
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},
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locale: {
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type: String,
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default: DEFAULT_USER_PREFERENCES.locale,
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},
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})
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end
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def get_user(sid, headers, db, refresh = true)
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if email = db.query_one?("SELECT email FROM session_ids WHERE id = $1", sid, as: String)
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user = db.query_one("SELECT * FROM users WHERE email = $1", email, as: User)
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if refresh && Time.now - user.updated > 1.minute
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user, sid = fetch_user(sid, headers, db)
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user_array = user.to_a
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user_array[4] = user_array[4].to_json
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args = arg_array(user_array)
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db.exec("INSERT INTO users VALUES (#{args}) \
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ON CONFLICT (email) DO UPDATE SET updated = $1, subscriptions = $3", user_array)
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db.exec("INSERT INTO session_ids VALUES ($1,$2,$3) \
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ON CONFLICT (id) DO NOTHING", sid, user.email, Time.now)
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begin
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view_name = "subscriptions_#{sha256(user.email)[0..7]}"
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db.exec("CREATE MATERIALIZED VIEW #{view_name} AS \
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SELECT * FROM channel_videos WHERE \
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ucid = ANY ((SELECT subscriptions FROM users WHERE email = E'#{user.email.gsub("'", "\\'")}')::text[]) \
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ORDER BY published DESC;")
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rescue ex
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end
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end
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else
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user, sid = fetch_user(sid, headers, db)
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user_array = user.to_a
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user_array[4] = user_array[4].to_json
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args = arg_array(user.to_a)
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db.exec("INSERT INTO users VALUES (#{args}) \
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ON CONFLICT (email) DO UPDATE SET updated = $1, subscriptions = $3", user_array)
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db.exec("INSERT INTO session_ids VALUES ($1,$2,$3) \
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ON CONFLICT (id) DO NOTHING", sid, user.email, Time.now)
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begin
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view_name = "subscriptions_#{sha256(user.email)[0..7]}"
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db.exec("CREATE MATERIALIZED VIEW #{view_name} AS \
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SELECT * FROM channel_videos WHERE \
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ucid = ANY ((SELECT subscriptions FROM users WHERE email = E'#{user.email.gsub("'", "\\'")}')::text[]) \
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ORDER BY published DESC;")
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rescue ex
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end
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end
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return user, sid
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end
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def fetch_user(sid, headers, db)
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client = make_client(YT_URL)
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feed = client.get("/subscription_manager?disable_polymer=1", headers)
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feed = XML.parse_html(feed.body)
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channels = [] of String
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channels = feed.xpath_nodes(%q(//ul[@id="guide-channels"]/li/a)).compact_map do |channel|
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if {"Popular on YouTube", "Music", "Sports", "Gaming"}.includes? channel["title"]
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nil
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else
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channel["href"].lstrip("/channel/")
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end
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end
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channels = get_batch_channels(channels, db, false, false)
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email = feed.xpath_node(%q(//a[@class="yt-masthead-picker-header yt-masthead-picker-active-account"]))
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if email
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email = email.content.strip
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else
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email = ""
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end
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token = Base64.urlsafe_encode(Random::Secure.random_bytes(32))
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user = User.new(Time.now, [] of String, channels, email, DEFAULT_USER_PREFERENCES, nil, token, [] of String)
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return user, sid
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end
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def create_user(sid, email, password)
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password = Crypto::Bcrypt::Password.create(password, cost: 10)
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token = Base64.urlsafe_encode(Random::Secure.random_bytes(32))
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user = User.new(Time.now, [] of String, [] of String, email, DEFAULT_USER_PREFERENCES, password.to_s, token, [] of String)
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return user, sid
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end
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def create_response(user_id, operation, key, db, expire = 6.hours)
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expire = Time.now + expire
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nonce = Random::Secure.hex(16)
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db.exec("INSERT INTO nonces VALUES ($1, $2) ON CONFLICT DO NOTHING", nonce, expire)
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challenge = "#{expire.to_unix}-#{nonce}-#{user_id}-#{operation}"
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token = OpenSSL::HMAC.digest(:sha256, key, challenge)
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challenge = Base64.urlsafe_encode(challenge)
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token = Base64.urlsafe_encode(token)
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return challenge, token
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end
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def validate_response(challenge, token, user_id, operation, key, db, locale)
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if !challenge
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raise translate(locale, "Hidden field \"challenge\" is a required field")
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end
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if !token
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raise translate(locale, "Hidden field \"token\" is a required field")
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end
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challenge = Base64.decode_string(challenge)
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if challenge.split("-").size == 4
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expire, nonce, challenge_user_id, challenge_operation = challenge.split("-")
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expire = expire.to_i?
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expire ||= 0
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else
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raise translate(locale, "Invalid challenge")
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end
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challenge = OpenSSL::HMAC.digest(:sha256, key, challenge)
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challenge = Base64.urlsafe_encode(challenge)
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if db.query_one?("SELECT EXISTS (SELECT true FROM nonces WHERE nonce = $1)", nonce, as: Bool)
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db.exec("DELETE FROM nonces * WHERE nonce = $1", nonce)
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else
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raise translate(locale, "Invalid token")
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end
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if challenge != token
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raise translate(locale, "Invalid token")
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end
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if challenge_operation != operation
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raise translate(locale, "Invalid token")
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end
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if challenge_user_id != user_id
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raise translate(locale, "Invalid user")
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end
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if expire < Time.now.to_unix
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raise translate(locale, "Token is expired, please try again")
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end
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end
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def generate_captcha(key, db)
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second = Random::Secure.rand(12)
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second_angle = second * 30
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second = second * 5
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minute = Random::Secure.rand(12)
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minute_angle = minute * 30
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minute = minute * 5
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hour = Random::Secure.rand(12)
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hour_angle = hour * 30 + minute_angle.to_f / 12
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if hour == 0
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hour = 12
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end
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clock_svg = <<-END_SVG
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<svg viewBox="0 0 100 100" width="200px">
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<circle cx="50" cy="50" r="45" fill="#eee" stroke="black" stroke-width="2"></circle>
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<text x="69" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 1</text>
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<text x="82.909" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 2</text>
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<text x="88" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 3</text>
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<text x="82.909" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 4</text>
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<text x="69" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 5</text>
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<text x="50" y="91" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 6</text>
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<text x="31" y="85.909" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 7</text>
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<text x="17.091" y="72" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 8</text>
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<text x="12" y="53" text-anchor="middle" fill="black" font-family="Arial" font-size="10px"> 9</text>
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<text x="17.091" y="34" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">10</text>
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<text x="31" y="20.091" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">11</text>
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<text x="50" y="15" text-anchor="middle" fill="black" font-family="Arial" font-size="10px">12</text>
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<circle cx="50" cy="50" r="3" fill="black"></circle>
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<line id="second" transform="rotate(#{second_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="12" fill="black" stroke="black" stroke-width="1"></line>
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<line id="minute" transform="rotate(#{minute_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="16" fill="black" stroke="black" stroke-width="2"></line>
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<line id="hour" transform="rotate(#{hour_angle}, 50, 50)" x1="50" y1="50" x2="50" y2="24" fill="black" stroke="black" stroke-width="2"></line>
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</svg>
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END_SVG
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image = ""
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convert = Process.run(%(convert -density 1200 -resize 400x400 -background none svg:- png:-), shell: true,
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input: IO::Memory.new(clock_svg), output: Process::Redirect::Pipe) do |proc|
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image = proc.output.gets_to_end
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image = Base64.strict_encode(image)
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image = "data:image/png;base64,#{image}"
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end
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answer = "#{hour}:#{minute.to_s.rjust(2, '0')}:#{second.to_s.rjust(2, '0')}"
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answer = OpenSSL::HMAC.hexdigest(:sha256, key, answer)
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challenge, token = create_response(answer, "sign_in", key, db)
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return {image: image, challenge: challenge, token: token}
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end
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