378 行
11 KiB
Crystal
378 行
11 KiB
Crystal
class Config
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YAML.mapping({
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crawl_threads: Int32,
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channel_threads: Int32,
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video_threads: Int32,
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db: NamedTuple(
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user: String,
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password: String,
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host: String,
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port: Int32,
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dbname: String,
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),
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dl_api_key: String?,
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https_only: Bool?,
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hmac_key: String?,
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full_refresh: Bool,
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geo_bypass: Bool,
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update_feeds: Bool,
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})
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end
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class FilteredCompressHandler < Kemal::Handler
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exclude ["/videoplayback", "/videoplayback/*", "/vi/*", "/api/*", "/ggpht/*"]
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def call(env)
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return call_next env if exclude_match? env
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{% if flag?(:without_zlib) %}
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call_next env
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{% else %}
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request_headers = env.request.headers
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if request_headers.includes_word?("Accept-Encoding", "gzip")
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env.response.headers["Content-Encoding"] = "gzip"
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env.response.output = Gzip::Writer.new(env.response.output, sync_close: true)
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elsif request_headers.includes_word?("Accept-Encoding", "deflate")
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env.response.headers["Content-Encoding"] = "deflate"
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env.response.output = Flate::Writer.new(env.response.output, sync_close: true)
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end
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call_next env
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{% end %}
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end
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end
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class DenyFrame < Kemal::Handler
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exclude ["/embed/*"]
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def call(env)
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return call_next env if exclude_match? env
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env.response.headers["X-Frame-Options"] = "sameorigin"
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call_next env
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end
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end
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def rank_videos(db, n, filter, url)
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top = [] of {Float64, String}
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db.query("SELECT id, wilson_score, published FROM videos WHERE views > 5000 ORDER BY published DESC LIMIT 1000") do |rs|
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rs.each do
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id = rs.read(String)
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wilson_score = rs.read(Float64)
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published = rs.read(Time)
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# Exponential decay, older videos tend to rank lower
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temperature = wilson_score * Math.exp(-0.000005*((Time.now - published).total_minutes))
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top << {temperature, id}
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end
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end
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top.sort!
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# Make hottest come first
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top.reverse!
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top = top.map { |a, b| b }
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if filter
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language_list = [] of String
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top.each do |id|
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if language_list.size == n
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break
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else
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client = make_client(url)
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begin
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video = get_video(id, db)
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rescue ex
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next
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end
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if video.language
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language = video.language
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else
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description = XML.parse(video.description)
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content = [video.title, description.content].join(" ")
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content = content[0, 10000]
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results = DetectLanguage.detect(content)
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language = results[0].language
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db.exec("UPDATE videos SET language = $1 WHERE id = $2", language, id)
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end
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if language == "en"
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language_list << id
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end
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end
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end
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return language_list
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else
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return top[0..n - 1]
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end
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end
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def login_req(login_form, f_req)
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data = {
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"pstMsg" => "1",
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"checkConnection" => "youtube",
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"checkedDomains" => "youtube",
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"hl" => "en",
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"deviceinfo" => %q([null,null,null,[],null,"US",null,null,[],"GlifWebSignIn",null,[null,null,[]]]),
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"f.req" => f_req,
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"flowName" => "GlifWebSignIn",
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"flowEntry" => "ServiceLogin",
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}
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data = login_form.merge(data)
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return HTTP::Params.encode(data)
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end
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def generate_captcha(key)
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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="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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challenge = ""
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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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challenge = proc.output.gets_to_end
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challenge = Base64.strict_encode(challenge)
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challenge = "data:image/png;base64,#{challenge}"
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end
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answer = "#{hour}:#{minute.to_s.rjust(2, '0')}"
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token = OpenSSL::HMAC.digest(:sha256, key, answer)
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token = Base64.urlsafe_encode(token)
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return {challenge: challenge, token: token}
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end
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def html_to_content(description_html)
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if !description_html
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description = ""
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description_html = ""
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else
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description_html = description_html.to_s
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description = description_html.gsub("<br>", "\n")
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description = description.gsub("<br/>", "\n")
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if description.empty?
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description = ""
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else
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description = XML.parse_html(description).content.strip("\n ")
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end
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end
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return description_html, description
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end
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def extract_videos(nodeset, ucid = nil)
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videos = extract_items(nodeset, ucid)
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videos.select! { |item| !item.is_a?(SearchChannel | SearchPlaylist) }
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videos.map { |video| video.as(SearchVideo) }
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end
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def extract_items(nodeset, ucid = nil)
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# TODO: Make this a 'common', so it makes more sense to be used here
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items = [] of SearchItem
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nodeset.each do |node|
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anchor = node.xpath_node(%q(.//h3[contains(@class,"yt-lockup-title")]/a))
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if !anchor
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next
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end
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if anchor["href"].starts_with? "https://www.googleadservices.com"
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next
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end
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anchor = node.xpath_node(%q(.//div[contains(@class, "yt-lockup-byline")]/a))
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if !anchor
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author = ""
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author_id = ""
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else
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author = anchor.content.strip
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author_id = anchor["href"].split("/")[-1]
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end
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anchor = node.xpath_node(%q(.//h3[contains(@class, "yt-lockup-title")]/a))
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if !anchor
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next
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end
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title = anchor.content.strip
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id = anchor["href"]
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description_html = node.xpath_node(%q(.//div[contains(@class, "yt-lockup-description")]))
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description_html, description = html_to_content(description_html)
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tile = node.xpath_node(%q(.//div[contains(@class, "yt-lockup-tile")]))
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if !tile
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next
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end
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case tile["class"]
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when .includes? "yt-lockup-playlist"
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plid = HTTP::Params.parse(URI.parse(id).query.not_nil!)["list"]
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anchor = node.xpath_node(%q(.//div[contains(@class, "yt-lockup-meta")]/a))
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if !anchor
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anchor = node.xpath_node(%q(.//ul[@class="yt-lockup-meta-info"]/li/a))
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end
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video_count = node.xpath_node(%q(.//span[@class="formatted-video-count-label"]/b))
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if video_count
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video_count = video_count.content
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if video_count == "50+"
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author = "YouTube"
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author_id = "UC-9-kyTW8ZkZNDHQJ6FgpwQ"
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video_count = video_count.rchop("+")
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end
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video_count = video_count.to_i?
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end
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video_count ||= 0
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videos = [] of SearchPlaylistVideo
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node.xpath_nodes(%q(.//*[contains(@class, "yt-lockup-playlist-items")]/li)).each do |video|
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anchor = video.xpath_node(%q(.//a))
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if anchor
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video_title = anchor.content.strip
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id = HTTP::Params.parse(URI.parse(anchor["href"]).query.not_nil!)["v"]
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end
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video_title ||= ""
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id ||= ""
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anchor = video.xpath_node(%q(.//span/span))
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if anchor
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length_seconds = decode_length_seconds(anchor.content)
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end
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length_seconds ||= 0
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videos << SearchPlaylistVideo.new(
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video_title,
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id,
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length_seconds
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)
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end
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items << SearchPlaylist.new(
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title,
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plid,
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author,
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author_id,
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video_count,
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videos
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)
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when .includes? "yt-lockup-channel"
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author = title.strip
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ucid = id.split("/")[-1]
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author_thumbnail = node.xpath_node(%q(.//div/span/img)).try &.["data-thumb"]?
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author_thumbnail ||= node.xpath_node(%q(.//div/span/img)).try &.["src"]
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author_thumbnail ||= ""
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subscriber_count = node.xpath_node(%q(.//span[contains(@class, "yt-subscriber-count")])).try &.["title"].delete(",").to_i?
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subscriber_count ||= 0
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video_count = node.xpath_node(%q(.//ul[@class="yt-lockup-meta-info"]/li)).try &.content.split(" ")[0].delete(",").to_i?
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video_count ||= 0
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items << SearchChannel.new(
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author,
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ucid,
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author_thumbnail,
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subscriber_count,
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video_count,
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description,
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description_html
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)
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else
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id = id.lchop("/watch?v=")
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metadata = node.xpath_nodes(%q(.//div[contains(@class,"yt-lockup-meta")]/ul/li))
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begin
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published = decode_date(metadata[0].content.lchop("Streamed ").lchop("Starts "))
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rescue ex
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end
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begin
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published ||= Time.epoch(metadata[0].xpath_node(%q(.//span)).not_nil!["data-timestamp"].to_i64)
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rescue ex
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end
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published ||= Time.now
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begin
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view_count = metadata[0].content.rchop(" watching").delete(",").try &.to_i64?
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rescue ex
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end
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begin
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view_count ||= metadata.try &.[1].content.delete("No views,").try &.to_i64?
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rescue ex
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end
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view_count ||= 0_i64
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length_seconds = node.xpath_node(%q(.//span[@class="video-time"]))
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if length_seconds
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length_seconds = decode_length_seconds(length_seconds.content)
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else
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length_seconds = -1
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end
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live_now = node.xpath_node(%q(.//span[contains(@class, "yt-badge-live")]))
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if live_now
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live_now = true
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else
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live_now = false
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end
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items << SearchVideo.new(
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title,
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id,
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author,
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author_id,
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published,
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view_count,
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description,
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description_html,
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length_seconds,
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live_now
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)
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end
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end
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return items
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end
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