dieulot · danielsebesta · Jul 27, 2024 · Aug 4, 2025 · Aug 4, 2025 · Aug 4, 2025
diff --git a/404.template.html b/404.template.html
@@ -1,6 +1,6 @@
 <!doctype html>
 <html lang="en">
-<title>404 ip.dog</title>
+<title>404 - ip.smht.eu</title>
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <style>
 :root {
@@ -33,5 +33,5 @@
   color: var(--action-color);
 }
 </style>
-<h1>404 page not found</h1>
-<a href="/">home page</a>
+<h1>404 - stránka nenalezena</h1>
+<a href="/">zpět</a>
diff --git a/assets/minimal-prototype.html b/assets/minimal-prototype.html
@@ -1,7 +1,7 @@
 <!doctype html>
 <html lang="en">
-<title>ip.dog</title>
-<meta name="description" content="The fastest way to get your IP address.">
+<title>ip.smht.eu</title>
+<meta name="description" content="Nejrychlejší cesta jak získat Vaši IP adresu bezpečně">
 <meta name="viewport" content="width=device-width, initial-scale=1">
 <style>
 body { font: 25px system-ui; cursor: pointer; text-align: center; }
@@ -19,13 +19,13 @@
 </style>
 <h1 class="v6">2001:861:5286:7a70:5caa:1ba:6f57:dfca</h1>
 <h1 class="v4"hidden>233.233.233.222</h1>
-<button>Click anywhere to copy</button>
+<button>Klikni kamkoliv pro zkopírování</button>
 <script>
 document.addEventListener('click', listener)
 document.addEventListener('keypress', listener)
 function listener() {
   navigator.clipboard.writeText(document.querySelector('h1'))
-  document.querySelector('button').innerHTML = 'Copied'
+  document.querySelector('button').innerHTML = 'Zkopírováno'
 }
 </script>
 <script src="more.js" async></script>
diff --git a/favicon.ico b/favicon.ico
diff --git a/index.template.html b/index.template.html
diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
-  "devDependencies": {
-    "wrangler": "3.44.0"
+    "devDependencies": {
+    "wrangler": "^4.27.0"
   },
   "scripts": {
     "start": "wrangler dev --assets 'assets/'",

diff --git a/translations/cs.txt b/translations/cs.txt
@@ -0,0 +1,9 @@
+Klikni kamkoliv pro zkopírování
+Zkopírováno
+ip.dog je nejrychlejší cesta jak získat Vaši IP adresu bezpečně. 🐶
+Extra krátká doména.
+Celá stránka je kopírovací tlačítko, anebo můžete zmáčknout jakoukoliv klávesu, abyste nemuseli pohnout prstem/myší.
+Je to dynamická stránka s rychlostí statické, která je díky Cloudflare Workers distribuována blízko Vás kdekoli na světě.
+Celá stránka se vejde do jednoho paketu TCP (≤ 1460 bajtů), aby se zabránilo obousměrnému zpoždění.
+Vícejazyčnost (<a href="/translate">překlad</a> zabere dvě minuty), tmavý režim, přístupnost.
+Vytvořil <a href="https://dieulot.fr/">Alexandre Dieulot</a>. <a href="https://github.com/dieulot/ip.dog">Zdrojový kód</a> je dostupný.
diff --git a/worker.js b/worker.js
@@ -1,86 +1,149 @@
 import e404Html from './404.template.html'
-
 const translations = {
   'de': (await import('./translations/de.txt')).default,
   'en': (await import('./translations/en.txt')).default,
   'fr': (await import('./translations/fr.txt')).default,
   'hi': (await import('./translations/hi.txt')).default,
+  'cs': (await import('./translations/cs.txt')).default,
 }
 // The above cannot put in a loop because Wrangler (2.11) chokes on imports with dynamic names.
-
 const indexHtml = (await import('./index.template.html')).default
   .replaceAll('\n', '')
   .replaceAll('  ', '')
   .replaceAll(': ', ':')
   .replaceAll(';}', '}')
-
 const translateHtml = (await import('./translate.template.html')).default
   .replace('{{TEXT}}', translations['en']
     .trim()
     .replaceAll('<', '&lt;')
     .replaceAll('>', '&gt;')
   )
-
 export default {
   fetch,
 }
-
 async function fetch(request, env) {
   const {pathname} = new URL(request.url)
-
-  let ip
+  console.log('Country:', request.cf?.country)
+  console.log('Accept-Language:', request.headers.get('accept-language'))
+
+  let ipData
   if (env.isDev) {
-    ip = generateRandomIpv4OrIpv6Address()
+    ipData = generateRandomIpData()
   }
   else {
-    ip = request.headers.get('cf-connecting-ip')
+    ipData = getIpData(request)
   }
-
+  
   let body = ''
   let status = 200
-
   const headers = new Headers()
   headers.append('Content-Type', 'text/html; charset=utf-8')
   headers.append('Strict-Transport-Security', 'max-age=33333333; includeSubDomains; preload')
-
   switch (pathname) {
     case '/':
-      body = transform(indexHtml, ip, getLang(request.headers.get('accept-language')))
+      body = transform(indexHtml, ipData, getLang(request.headers.get('accept-language')))
       break
-
     case '/translate':
       body = translateHtml
       break
-
     default:
       status = 404
       body = e404Html
   }
-
   return new Response(body, {
     status,
     headers,
   })
 }
 
-function transform(html, ip, lang) {
+function getIpData(request) {
+  // Získáme všechny možné IP adresy z různých headerů
+  const cfConnectingIp = request.headers.get('cf-connecting-ip')
+  const xForwardedFor = request.headers.get('x-forwarded-for')
+  const xRealIp = request.headers.get('x-real-ip')
+  const cfPseudoIpv4 = request.headers.get('cf-pseudo-ipv4')
+
+  // Sestavíme seznam všech možných IP adres
+  const allIps = []
+
+  if (cfPseudoIpv4) allIps.push(cfPseudoIpv4)
+  if (cfConnectingIp) allIps.push(cfConnectingIp)
+  if (xRealIp) allIps.push(xRealIp)
+  if (xForwardedFor) {
+    xForwardedFor.split(',').forEach(ip => allIps.push(ip.trim()))
+  }
+
+  // Odfiltrujeme prázdné hodnoty
+  const validIps = allIps.filter(ip => ip && ip !== '')
+
+  console.log('All available IPs:', validIps)
+
+  // Najdeme IPv4 a IPv6 adresy
+  let ipv4 = null
+  let ipv6 = null
+
+  for (const ip of validIps) {
+    if (isIPv4(ip) && !ipv4) {
+      ipv4 = ip
+    } else if (isIPv6(ip) && !ipv6) {
+      ipv6 = ip
+    }
+  }
+
+  // Vytvoříme objekt s daty
+  const ipData = {
+    primary: ipv4 || ipv6 || 'unknown', // IPv4 prioritně
+    ipv4: ipv4,
+    ipv6: ipv6,
+    protocol: ipv4 ? 'IPv4' : ipv6 ? 'IPv6' : 'unknown'
+  }
+
+  console.log('IP Data:', ipData)
+  return ipData
+}
+
+function isIPv4(ip) {
+  // Kontrola IPv4 formátu (xxx.xxx.xxx.xxx)
+  const ipv4Regex = /^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/
+  return ipv4Regex.test(ip)
+}
+
+function isIPv6(ip) {
+  // Kontrola IPv6 formátu
+  const ipv6Regex = /^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$/
+  return ipv6Regex.test(ip)
+}
+
+function transform(html, ipData, lang) {
   const translationLines = translations[lang].split('\n')
   html = html
     .replace('{{LANG}}', lang)
     .replaceAll(/\{\{LINE([0-9]+)\}\}/g, (all, p1) => {
       return translationLines[p1 - 1]
     })
-    .replaceAll('{{IP}}', ip)
-    .replace(' copyElement.value.length', ip.length)
-
+    .replaceAll('{{IP}}', ipData.primary)
+    .replace(' copyElement.value.length', ipData.primary.length)
+
+  // Přidáme podporu pro zobrazení obou IP adres
+  if (ipData.ipv4 && ipData.ipv6) {
+    html = html.replace('{{IP_INFO}}', `
+      <div class="ip-details">
+        <p><strong>Primární IP:</strong> ${ipData.primary} (${ipData.protocol})</p>
+        <p><strong>IPv4:</strong> ${ipData.ipv4}</p>
+        <p><strong>IPv6:</strong> ${ipData.ipv6}</p>
+      </div>
+    `)
+  } else {
+    html = html.replace('{{IP_INFO}}', '')
+  }
+
   return html
 }
 
 function getLang(header) {
   if (!header) {
     return 'en'
   }
-
   header = header.toLowerCase()
   const langs = header.split(/(?:,|;)/)
   for (let lang of langs) {
@@ -92,15 +155,34 @@ function getLang(header) {
       return base
     }
   }
-
   return 'en'
 }
 
-function generateRandomIpv4OrIpv6Address() {
-  if (Math.random() < .5) {
-    return crypto.getRandomValues(new Uint8Array(4)).join('.')
+function generateRandomIpData() {
+  const hasIpv4 = Math.random() < 0.9 // 90% šance na IPv4
+  const hasIpv6 = Math.random() < 0.6 // 60% šance na IPv6
+
+  let ipv4 = null
+  let ipv6 = null
+
+  if (hasIpv4) {
+    ipv4 = crypto.getRandomValues(new Uint8Array(4)).join('.')
   }
-  else {
-    return Array.from(crypto.getRandomValues(new Uint16Array(8))).map((e) => e.toString(16)).join(':')
+
+  if (hasIpv6) {
+    ipv6 = Array.from(crypto.getRandomValues(new Uint16Array(8)))
+      .map((e) => e.toString(16)).join(':')
+  }
+
+  // Pokud nemáme ani jednu, vygenerujeme IPv4
+  if (!ipv4 && !ipv6) {
+    ipv4 = crypto.getRandomValues(new Uint8Array(4)).join('.')
+  }
+
+  return {
+    primary: ipv4 || ipv6,
+    ipv4: ipv4,
+    ipv6: ipv6,
+    protocol: ipv4 ? 'IPv4' : 'IPv6'
   }
 }
diff --git a/wrangler.toml b/wrangler.toml
@@ -3,13 +3,9 @@ main = "worker.js"
 compatibility_date = "2024-03-26"
 env = { }
 
-[[routes]]
-pattern = "ip.dog/*"
-zone_id = "..."
-
-[[routes]]
-pattern = "www.ip.dog/*"
-zone_id = "..."
+# [[routes]]
+# pattern = "ip.smht.eu/*"
+# zone_id = "..."
 
 [triggers]
 crons = [ ]