LaconicNetwork/cosmjs-util
10
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases 1 Wiki Activity

Faucet can only be used once a day per ip

Browse Source
This commit is contained in:
Milan Steiner 2022-02-14 12:48:24 +01:00
parent dffa567a1f
commit 89b73437af
1 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
packages/faucet/src/api/webserver.ts
View File

@ -14,8 +14,14 @@ export interface ChainConstants {
readonly chainId: string;
}
export interface IpEntry {
ip: string;
date: number;
}
export class Webserver {
private readonly api = new Koa();
private readonly ipCounter: IpEntry[] = [];
public constructor(faucet: Faucet, chainConstants: ChainConstants) {
this.api.use(cors());
@ -47,6 +53,16 @@ export class Webserver {
break;
}
case "/credit": {
const ipUsed = this.ipCounter.find((x) => x.ip === context.request.ip);
if (ipUsed !== undefined) {
if (ipUsed.date + 24 * 3600 > Date.now()) {
throw new HttpError(
405,
"Too many request from the same IP. Blocked to prevent draining. Please wait 24h and try it again!",
);
}
}
if (context.request.method !== "POST") {
throw new HttpError(405, "This endpoint requires a POST request");
}
@ -73,6 +89,10 @@ export class Webserver {
try {
await faucet.credit(address, matchingDenom);
// Count IPs to prevent draining
if (context.request.ip) {
this.ipCounter.push({ ip: context.request.ip, date: Date.now() });
}
} catch (e) {
console.error(e);
throw new HttpError(500, "Sending tokens failed");