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/*
Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
Copyright (C) 2023 Spacebar and Spacebar Contributors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import { Config } from "@spacebar/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();
}
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 {
// TODO: express can do this (trustProxies: true)?
return (
// eslint-disable-next-line @typescript-eslint/ban-ts-comment
// @ts-ignore
req.headers[Config.get().security.forwardedFor] || req.socket.remoteAddress
);
}
type Location = { latitude: number; longitude: number };
export function distanceBetweenLocations(loc1: Location, loc2: Location): 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
}
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