1 files changed, 99 insertions, 0 deletions
diff --git a/src/api/util/utility/ipAddress.ts b/src/api/util/utility/ipAddress.ts
new file mode 100644
index 00000000..c96feb9e
--- /dev/null
+++ b/src/api/util/utility/ipAddress.ts
@@ -0,0 +1,99 @@
+import { Config } from "@fosscord/util";
+import { Request } from "express";
+// use ipdata package instead of simple fetch because of integrated caching
+import fetch from "node-fetch";
+
+const exampleData = {
+	ip: "",
+	is_eu: true,
+	city: "",
+	region: "",
+	region_code: "",
+	country_name: "",
+	country_code: "",
+	continent_name: "",
+	continent_code: "",
+	latitude: 0,
+	longitude: 0,
+	postal: "",
+	calling_code: "",
+	flag: "",
+	emoji_flag: "",
+	emoji_unicode: "",
+	asn: {
+		asn: "",
+		name: "",
+		domain: "",
+		route: "",
+		type: "isp"
+	},
+	languages: [
+		{
+			name: "",
+			native: ""
+		}
+	],
+	currency: {
+		name: "",
+		code: "",
+		symbol: "",
+		native: "",
+		plural: ""
+	},
+	time_zone: {
+		name: "",
+		abbr: "",
+		offset: "",
+		is_dst: true,
+		current_time: ""
+	},
+	threat: {
+		is_tor: false,
+		is_proxy: false,
+		is_anonymous: false,
+		is_known_attacker: false,
+		is_known_abuser: false,
+		is_threat: false,
+		is_bogon: false
+	},
+	count: 0,
+	status: 200
+};
+
+//TODO add function that support both ip and domain names
+export async function IPAnalysis(ip: string): Promise<typeof exampleData> {
+	const { ipdataApiKey } = Config.get().security;
+	if (!ipdataApiKey) return { ...exampleData, ip };
+
+	return (await fetch(`https://api.ipdata.co/${ip}?api-key=${ipdataApiKey}`)).json() as any;
+}
+
+export function isProxy(data: typeof exampleData) {
+	if (!data || !data.asn || !data.threat) return false;
+	if (data.asn.type !== "isp") return true;
+	if (Object.values(data.threat).some((x) => x)) return true;
+
+	return false;
+}
+
+export function getIpAdress(req: Request): string {
+	// @ts-ignore
+	return (
+		req.headers[Config.get().security.forwadedFor as string] ||
+		req.headers[Config.get().security.forwadedFor?.toLowerCase() as string] ||
+		req.socket.remoteAddress
+	);
+}
+
+export function distanceBetweenLocations(loc1: any, loc2: any): number {
+	return distanceBetweenCoords(loc1.latitude, loc1.longitude, loc2.latitude, loc2.longitude);
+}
+
+//Haversine function
+function distanceBetweenCoords(lat1: number, lon1: number, lat2: number, lon2: number) {
+	const p = 0.017453292519943295; // Math.PI / 180
+	const c = Math.cos;
+	const a = 0.5 - c((lat2 - lat1) * p) / 2 + (c(lat1 * p) * c(lat2 * p) * (1 - c((lon2 - lon1) * p))) / 2;
+
+	return 12742 * Math.asin(Math.sqrt(a)); // 2 * R; R = 6371 km
+}