Node.js version (not finished yet)

utils/cache.js

@@ -0,0 +1,30 @@
+const fs = require('node:fs');
+const { CACHE_FILE, REPORT_INTERVAL } = require('../config.js').MAIN;
+const log = require('./log.js');
+
+const reportedIps = new Map();
+
+const loadReportedIps = () => {
+	if (fs.existsSync(CACHE_FILE)) {
+		fs.readFileSync(CACHE_FILE, 'utf8')
+			.split('\n')
+			.forEach(line => {
+				const [ip, time] = line.split(' ');
+				if (ip && time) reportedIps.set(ip, Number(time));
+			});
+		log(0, `Loaded ${reportedIps.size} IPs from ${CACHE_FILE}`);
+	} else {
+		log(0, `${CACHE_FILE} does not exist. No data to load.`);
+	}
+};
+
+const saveReportedIps = () => fs.writeFileSync(CACHE_FILE, Array.from(reportedIps).map(([ip, time]) => `${ip} ${time}`).join('\n'), 'utf8');
+
+const isIpReportedRecently = ip => {
+	const now = Math.floor(Date.now() / 1000);
+	return reportedIps.has(ip) && (now - reportedIps.get(ip) < REPORT_INTERVAL);
+};
+
+const markIpAsReported = ip => reportedIps.set(ip, Math.floor(Date.now() / 1000));
+
+module.exports = { loadReportedIps, saveReportedIps, isIpReportedRecently, markIpAsReported };

utils/isLocalIP.js

@@ -0,0 +1,10 @@
+const ipaddr = require('ipaddr.js');
+
+module.exports = ip => {
+	const range = ipaddr.parse(ip).range();
+	return [
+		'unspecified', 'multicast', 'linkLocal', 'loopback', 'reserved', 'benchmarking',
+		'amt', 'broadcast', 'carrierGradeNat', 'private', 'as112', 'uniqueLocal',
+		'ipv4Mapped', 'rfc6145', '6to4', 'teredo', 'as112v6', 'orchid2', 'droneRemoteIdProtocolEntityTags',
+	].includes(range);
+};

utils/log.js

@@ -0,0 +1,10 @@
+const levels = {
+	0: { method: 'log', label: '[INFO]' },
+	1: { method: 'warn', label: '[WARN]' },
+	2: { method: 'error', label: '[FAIL]' },
+};
+
+module.exports = (level, msg) => {
+	const { method, label } = levels[level] || { method: 'log', label: '[N/A]' };
+	console[method](`${label} ${msg}`);
+};