Function checkService

web/scripts/ragnar_modern.js:7824–7876

()

            `<tr class="border-t border-slate-800"><td class="px-3 py-1.5 text-gray-500">Neighbours</td><td class="px-3 py-1.5">${d.neighbor_count != null ? d.neighbor_count : '—'}</td></tr>` +
            '</tbody></table>';
        if (d.impersonators && d.impersonators.length) {
            html += '<p class="text-xs text-gray-400 mt-2">One MAC answering for many IPs:</p><ul class="text-xs text-gray-400 list-disc pl-5">' +
                d.impersonators.map(i => {
                    const ips = i.ips || [];
                    return '<li class="font-mono">' + escapeHtml(i.mac) + ' → ' + escapeHtml(ips.slice(0, 6).join(', ')) + (ips.length > 6 ? '…' : '') + '</li>';
                }).join('') + '</ul>';
        }
        if (d.reasons && d.reasons.length) {
            html += '<ul class="text-xs text-gray-400 mt-2 list-disc pl-5">' +
                d.reasons.map(r => '<li>' + escapeHtml(r) + '</li>').join('') + '</ul>';
        }
        out.innerHTML = html;
    } catch (e) {
        out.innerHTML = '<p class="text-sm text-red-400">Failed: ' + escapeHtml(e.message) + '</p>';
    } finally {
        _ndBusy(btn, false);
    }
}

// ---- DHCP Guardian card (rogue DHCP + starvation, detection-only) ----------
const _DHCP_VERDICT_STYLE = {
    clean:      ['bg-green-950/40 border-green-900 text-green-400', '✓ No rogue DHCP server or starvation detected'],
    suspicious: ['bg-amber-950/50 border-amber-800 text-amber-300', '⚠ DHCP anomaly — review below'],
    rogue:      ['bg-red-950/60 border-red-800 text-red-300', '🛑 Rogue / fake DHCP server detected'],
    starvation: ['bg-red-950/60 border-red-800 text-red-300', '🛑 DHCP starvation (pool-exhaustion) detected'],
    unknown:    ['bg-slate-800 border-slate-700 text-slate-400', '— Could not determine'],
};
function _dhcpFillIfaces() {
    const sel = document.getElementById('dhcp-iface');
    if (!sel || sel.dataset.filled === '1') return Promise.resolve();
    return fetchAPI('/api/net/interfaces').then(x => {
        (x.interfaces || []).forEach(i => {
            const o = document.createElement('option');
            o.value = i.name;
            const tag = i.type === 'wifi' ? ' (WiFi)' : i.type === 'ethernet' ? ' (LAN)' : (i.type ? ' (' + i.type + ')' : '');
            o.textContent = i.name + tag;
            sel.appendChild(o);
        });
        sel.dataset.filled = '1';
    }).catch(() => {});
}
async function runDhcpGuardian() {
    const out = document.getElementById('dhcp-results');
    if (!out) return;
    const btn = (typeof event !== 'undefined' && event && event.target) ? event.target : null;
    const ifaceSel = document.getElementById('dhcp-iface');
    const iface = ifaceSel && ifaceSel.value ? ifaceSel.value : '';
    _ndBusy(btn, true, 'Scanning…');
    out.classList.remove('hidden');
    out.innerHTML = '<p class="text-sm text-gray-400">Provoking DHCP offers and watching for a DISCOVER flood… (a few seconds)</p>';
    try {
        _dhcpFillIfaces();
        const d = await fetchAPI('/api/net/dhcp-guardian' + (iface ? '?interface=' + encodeURIComponent(iface) : ''));
        if (!d || d.success === false) {
            out.innerHTML = '<p class="text-sm text-red-400">Error: ' + escapeHtml((d && d.error) || 'failed') + '</p>';
            return;