initial

2025-05-13 07:58:31 +02:00 · 2025-05-13 07:58:31 +02:00 · 871d8975ca
commit 871d8975ca
13 changed files with 653 additions and 0 deletions
--- a/app.rb
+++ b/app.rb
@ -0,0 +1,139 @@
+
+require 'sinatra'
+require 'json'
+require 'rack/accept'
+require 'time'
+
+use Rack::Accept
+
+NO_RESPONSES = {
+  "en" => [
+    "No.", "Nope.", "Nah.", "Nuh-uh.", "Negative.", "Nay.", 
+    "Hell no.", "Not in a million years.", "Get lost.", 
+    "Not happening, buddy.", "Why don't you try asking someone else?", 
+    "Are you kidding me?", "Absolutely not, go away.",
+    "I’m terribly sorry, but no.", "I regret to inform you that I cannot comply.",
+    "Unfortunately, that will not be possible at this time.",
+    "I must respectfully decline your request.", "I wish I could, but sadly I cannot.",
+    "It would be my pleasure to help, but I must regretfully decline.",
+    "With the greatest respect, I must say no.",
+    "I apologize, but I must kindly refuse your request."
+  ],
+  "de" => ["Nein.", "Keineswegs."],
+  "fr" => ["Non.", "Jamais."],
+  "ja" => ["いいえ", "ダメです。"],
+  "ru" => ["Нет", "Никак нет"],
+  "pt" => ["Não.", "De jeito nenhum."],
+  "es" => ["No.", "Para nada."],
+  "pl" => ["Nie.", "W żadnym wypadku."],
+  "fi" => ["Ei.", "Ei todellakaan."],
+  "tr" => ["Hayır.", "Bu değil."],
+  "he" => ["לא"],
+  "hi" => ["नहीं", "बिलकुल नहीं"],
+  "no" => ["Nei.", "Absolutt ikke.", "Ikke tale om."],
+  "sv" => ["Nej.", "Inte alls."],
+  "da" => ["Nej.", "Ikke en chance."],
+  "it" => ["No.", "Assolutamente no."],
+  "nl" => ["Nee.", "Absoluut niet."],
+  "cs" => ["Ne.", "Rozhodně ne."],
+  "ko" => ["아니요.", "절대 안 돼요."],
+  "zh" => ["不。", "绝对不行。"]
+}
+
+RATE_LIMIT = {
+  window: 60,     # seconds
+  limit: 60       # requests per IP per window
+}
+
+$requests = {}
+
+helpers do
+  def client_ip
+    request.env['HTTP_X_FORWARDED_FOR'] || request.ip
+  end
+
+  def log_to_journald(message)
+    IO.popen(["/usr/bin/systemd-cat", "--identifier=noaas"], "w") { |io| io.puts message }
+  rescue
+    puts message # fallback to stdout
+  end
+
+  def log_structured(lang:, format:, status:, duration_ms:)
+    log_entry = {
+      timestamp: Time.now.utc.iso8601,
+      ip: client_ip,
+      method: request.request_method,
+      path: request.path,
+      user_agent: request.user_agent,
+      language: lang,
+      format: format,
+      status: status,
+      duration_ms: duration_ms
+    }
+    log_to_journald(JSON.generate(log_entry))
+  end
+
+  def rate_limited?
+    ip = client_ip
+    now = Time.now.to_i
+    $requests[ip] ||= []
+    $requests[ip].reject! { |timestamp| timestamp < now - RATE_LIMIT[:window] }
+    if $requests[ip].size >= RATE_LIMIT[:limit]
+      true
+    else
+      $requests[ip] << now
+      false
+    end
+  end
+
+  def preferred_language
+    params["lang"] || request.env["HTTP_ACCEPT_LANGUAGE"].to_s.scan(/[a-z]{2}/).find do |lang|
+      NO_RESPONSES.key?(lang)
+    end || "en"
+  end
+
+  def no_message(lang)
+    NO_RESPONSES[lang].sample
+  end
+end
+
+before do
+  @start_time = Process.clock_gettime(Process::CLOCK_MONOTONIC)
+end
+
+after do
+  duration = ((Process.clock_gettime(Process::CLOCK_MONOTONIC) - @start_time) * 1000).round(2)
+  lang = preferred_language
+  format = request.preferred_type&.to_s || request.accept.first.to_s
+  log_structured(lang: lang, format: format, status: response.status, duration_ms: duration)
+end
+
+get '/' do
+  if rate_limited?
+    status 429
+    content_type :json
+    return { error: "Too Many Requests" }.to_json
+  end
+
+  lang = preferred_language
+  message = no_message(lang)
+
+  if request.preferred_type.to_s == 'application/json' || request.accept.include?('application/json')
+    content_type :json
+    status 200
+    { message: message, language: lang }.to_json
+  else
+    content_type :html
+    status 200
+    "<!DOCTYPE html>
+    <html lang='#{lang}'>
+    <head>
+      <meta charset='UTF-8'>
+      <title>No as a Service</title>
+    </head>
+    <body style='font-family: sans-serif; text-align: center; margin-top: 20%; font-size: 2em;'>
+      <p>#{message}</p>
+    </body>
+    </html>"
+  end
+end