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Pieter Vander Vennet 2024-06-17 18:22:13 +02:00
parent 3066c1c744
commit 8598577a8a
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node_modules/*
data/
.idea/

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README.md Normal file
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Geoip-server
============
Simple GEO-IP server

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package.json Normal file
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{
"name": "geoip-server",
"version": "0.0.1",
"description": "Simple Geo-ip server",
"main": "index.js",
"scripts": {
"test": "echo \"Error: no test specified\" && exit 1"
},
"author": "Pietervdvn",
"license": "GPL-3.0-or-later",
"dependencies": {
"ip2location-nodejs": "^9.6.1",
"ts-node": "^10.9.2"
}
}

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src/main.ts Normal file
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import {IP2Location} from "ip2location-nodejs";
import http from "node:http"
export class Server {
constructor(
port: number,
options: {
ignorePathPrefix?: string[]
},
handle: {
mustMatch: string | RegExp
mimetype: string
addHeaders?: Record<string, string>
handle: (path: string, queryParams: URLSearchParams, req: http.IncomingMessage) => Promise<string>
}[]
) {
handle.push({
mustMatch: "",
mimetype: "text/html",
handle: async () => {
return `<html><body>Supported endpoints are <ul>${handle
.filter((h) => h.mustMatch !== "")
.map((h) => {
let l = h.mustMatch
if (typeof h.mustMatch === "string") {
l = `<a href='${l}'>${l}</a>`
}
return "<li>" + l + "</li>"
})
.join("")}</ul></body></html>`
},
})
http.createServer(async (req: http.IncomingMessage, res) => {
try {
const url = new URL(`http://127.0.0.1/` + req.url)
let path = url.pathname
while (path.startsWith("/")) {
path = path.substring(1)
}
console.log(
req.method + " " + req.url,
"from:",
req.headers.origin,
new Date().toISOString(),
path
)
if (options?.ignorePathPrefix) {
for (const toIgnore of options.ignorePathPrefix) {
if (path.startsWith(toIgnore)) {
path = path.substring(toIgnore.length + 1)
break
}
}
}
const handler = handle.find((h) => {
if (typeof h.mustMatch === "string") {
return h.mustMatch === path
}
if (path.match(h.mustMatch)) {
return true
}
})
if (handler === undefined || handler === null) {
res.writeHead(404, {"Content-Type": "text/html"})
res.write("<html><body><p>Not found...</p></body></html>")
res.end()
return
}
res.setHeader(
"Access-Control-Allow-Headers",
"Origin, X-Requested-With, Content-Type, Accept"
)
res.setHeader("Access-Control-Allow-Origin", req.headers.origin ?? "*")
if (req.method === "OPTIONS") {
res.setHeader(
"Access-Control-Allow-Methods",
"POST, GET, OPTIONS, DELETE, UPDATE"
)
res.writeHead(204, {"Content-Type": handler.mimetype})
res.end()
return
}
if (req.method === "POST" || req.method === "UPDATE") {
return
}
if (req.method === "DELETE") {
return
}
try {
const result = await handler.handle(path, url.searchParams, req)
if (result === undefined) {
res.writeHead(500)
res.write("Could not fetch this website, probably blocked by them")
res.end()
return
}
if (typeof result !== "string") {
console.error(
"Internal server error: handling",
url,
"resulted in a ",
typeof result,
" instead of a string:",
result
)
}
const extraHeaders = handler.addHeaders ?? {}
res.writeHead(200, {"Content-Type": handler.mimetype, ...extraHeaders})
res.write("" + result)
res.end()
} catch (e) {
console.error("Could not handle request:", e)
res.writeHead(500)
res.write(e)
res.end()
}
} catch (e) {
console.error("FATAL:", e)
res.end()
}
}).listen(port)
console.log(
"Server is running on port " + port,
". Supported endpoints are: " + handle.map((h) => h.mustMatch).join(", ")
)
}
}
interface IP2LocationResult {
latitude: string;
longitude: string;
region: string;
countryLong: string;
countryShort: string;
ip: string;
ipNo: string;
}
export class Main {
private readonly ipv4: IP2Location
private readonly ipv6: IP2Location
constructor() {
console.log("Loading databases from ./data/")
this.ipv4 = new IP2Location();
this.ipv4.open("./data/IP2LOCATION-LITE-DB5.BIN");
console.log("Loaded IPv4 database")
this.ipv6 = new IP2Location();
this.ipv6.open("./data/IP2LOCATION-LITE-DB5.IPV6.BIN");
console.log("Loaded IPv6 database")
const result = this.ipv4.getAll("78.23.104.174");
console.log("Testresult on fixed IP address:", result)
new Server(2346, {},
[{
mustMatch: "ip",
mimetype: "application/json",
handle: async (path, params, request) => {
return JSON.stringify(this.fetchIp(request))
}
}])
}
private static readonly ipv4Regex = "[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+"
private fetchIp(request: http.IncomingMessage): IP2LocationResult {
//see : https://github.com/kirsch33/realip/issues/14
const ipAddress = <string>request.headers['HTTP_X_FORWARDED_FOR']
const db = ipAddress.match(Main.ipv4Regex) ? this.ipv4 : this.ipv6
return db.getAll(ipAddress)
}
}
new Main()