139 lines
3.1 KiB
TypeScript
139 lines
3.1 KiB
TypeScript
/*
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Spacebar: A FOSS re-implementation and extension of the Discord.com backend.
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Copyright (C) 2023 Spacebar and Spacebar Contributors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published
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by the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import { Config } from "@spacebar/util";
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import { Request } from "express";
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// use ipdata package instead of simple fetch because of integrated caching
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import fetch from "node-fetch";
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const exampleData = {
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ip: "",
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is_eu: true,
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city: "",
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region: "",
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region_code: "",
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country_name: "",
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country_code: "",
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continent_name: "",
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continent_code: "",
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latitude: 0,
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longitude: 0,
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postal: "",
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calling_code: "",
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flag: "",
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emoji_flag: "",
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emoji_unicode: "",
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asn: {
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asn: "",
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name: "",
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domain: "",
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route: "",
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type: "isp",
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},
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languages: [
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{
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name: "",
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native: "",
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},
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],
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currency: {
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name: "",
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code: "",
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symbol: "",
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native: "",
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plural: "",
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},
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time_zone: {
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name: "",
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abbr: "",
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offset: "",
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is_dst: true,
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current_time: "",
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},
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threat: {
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is_tor: false,
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is_proxy: false,
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is_anonymous: false,
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is_known_attacker: false,
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is_known_abuser: false,
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is_threat: false,
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is_bogon: false,
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},
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count: 0,
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status: 200,
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};
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//TODO add function that support both ip and domain names
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export async function IPAnalysis(ip: string): Promise<typeof exampleData> {
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const { ipdataApiKey } = Config.get().security;
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if (!ipdataApiKey) return { ...exampleData, ip };
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return (
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await fetch(`https://api.ipdata.co/${ip}?api-key=${ipdataApiKey}`)
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).json();
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}
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export function isProxy(data: typeof exampleData) {
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if (!data || !data.asn || !data.threat) return false;
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if (data.asn.type !== "isp") return true;
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if (Object.values(data.threat).some((x) => x)) return true;
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return false;
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}
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export function getIpAdress(req: Request): string {
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// TODO: express can do this (trustProxies: true)?
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return (
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// eslint-disable-next-line @typescript-eslint/ban-ts-comment
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// @ts-ignore
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req.headers[Config.get().security.forwardedFor] ||
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req.socket.remoteAddress
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);
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}
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type Location = { latitude: number; longitude: number };
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export function distanceBetweenLocations(
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loc1: Location,
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loc2: Location,
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): number {
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return distanceBetweenCoords(
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loc1.latitude,
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loc1.longitude,
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loc2.latitude,
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loc2.longitude,
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);
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}
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//Haversine function
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function distanceBetweenCoords(
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lat1: number,
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lon1: number,
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lat2: number,
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lon2: number,
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) {
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const p = 0.017453292519943295; // Math.PI / 180
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const c = Math.cos;
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const a =
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0.5 -
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c((lat2 - lat1) * p) / 2 +
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(c(lat1 * p) * c(lat2 * p) * (1 - c((lon2 - lon1) * p))) / 2;
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return 12742 * Math.asin(Math.sqrt(a)); // 2 * R; R = 6371 km
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}
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