Ip Lookup

# Basic usage: IP passed as first arg
IP=${1:-8.8.8.8}

# Query 4 sources
A=$(curl -s "https://ipinfo.io/${IP}/json")
B=$(curl -s "http://ip-api.com/json/${IP}?fields=status,country,regionName,city,lat,lon,org,query")
C=$(curl -s "https://geolocation-db.com/json/${IP}&position=true")
D=$(curl -s "https://api.db-ip.com/v2/free/${IP}" )

# Output best-match heuristics should be implemented in script
echo "One-line summary:"
jq -n '{ip:env.IP,sourceA:A,sourceB:B,sourceC:C,sourceD:D}' --argjson A "$A" --argjson B "$B" --argjson C "$C" --argjson D "$D"

// ip_lookup.js
async function fetchJson(url, timeout = 8000){
  const controller = new AbortController();
  const id = setTimeout(()=>controller.abort(), timeout);
  try { const res = await fetch(url, {signal: controller.signal}); clearTimeout(id); if(!res.ok) throw new Error(res.statusText); return await res.json(); } catch(e){ clearTimeout(id); throw e; }
}

async function ipLookup(ip){
  const sources = {
    ipinfo: `https://ipinfo.io/${ip}/json`,
    ipapi: `http://ip-api.com/json/${ip}?fields=status,country,regionName,city,lat,lon,org,query`,
    geodb: `https://geolocation-db.com/json/${ip}&position=true`,
    dbip: `https://api.db-ip.com/v2/free/${ip}`
  };

  const results = {};
  for(const [k,u] of Object.entries(sources)){
    try{ results[k] = await fetchJson(u); } catch(e){ results[k] = {error: e.message}; }
  }

  // Normalise and pick best match (simple majority on country+city)
  const votes = {};
  for(const r of Object.values(results)){
    if(!r || r.error) continue;
    const country = r.country || r.country_name || r.countryCode || null;
    const city = r.city || r.city_name || null;
    const key = `${country||'?'}/${city||'?'}`;
    votes[key] = (votes[key]||0)+1;
  }
  const best = Object.entries(votes).sort((a,b)=>b[1]-a[1])[0];
  return {best: best?best[0]:null,score: best?best[1]:0,results};
}

// Usage: node ip_lookup.js 8.8.8.8