66 lines
1.9 KiB
TypeScript
66 lines
1.9 KiB
TypeScript
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// https://tools.ietf.org/html/rfc5281 TTLS v0
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// https://tools.ietf.org/html/draft-funk-eap-ttls-v1-00 TTLS v1 (not implemented)
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/* eslint-disable no-bitwise */
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import * as NodeCache from 'node-cache';
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import debug from 'debug';
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import { IPacketHandlerResult, PacketResponseCode } from '../../../../types/PacketHandler';
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import { IEAPMethod } from '../../../../types/EAPMethod';
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import { IAuthentication } from '../../../../types/Authentication';
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import { buildEAPResponse, decodeEAPHeader } from '../EAPHelper';
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const log = debug('radius:eap:gtc');
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export class EAPGTC implements IEAPMethod {
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private loginData = new NodeCache({ useClones: false, stdTTL: 60 }); // queue data maximum for 60 seconds
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getEAPType(): number {
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return 6;
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}
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identify(identifier: number, stateID: string, msg?: Buffer): IPacketHandlerResult {
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if (msg) {
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const parsedMsg = msg.slice(
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0,
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msg.findIndex(v => v === 0)
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);
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log('identify', parsedMsg, parsedMsg.toString());
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this.loginData.set(stateID, parsedMsg); // use token til binary 0.);
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} else {
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log('no msg');
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}
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return buildEAPResponse(identifier, 6, Buffer.from('Password: '));
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}
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constructor(private authentication: IAuthentication) {}
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async handleMessage(
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_identifier: number,
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stateID: string,
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msg: Buffer
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): Promise<IPacketHandlerResult> {
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const username = this.loginData.get(stateID) as Buffer | undefined;
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const { data } = decodeEAPHeader(msg);
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let tillBinary0 = data.findIndex(v => v === 0) || data.length;
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if (tillBinary0 < 0) {
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tillBinary0 = data.length - 1;
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}
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const token = data.slice(0, tillBinary0 + 1); // use token til binary 0.
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if (!username) {
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throw new Error('no username');
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}
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log('username', username, username.toString());
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log('token', token, token.toString());
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const success = await this.authentication.authenticate(username.toString(), token.toString());
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return {
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code: success ? PacketResponseCode.AccessAccept : PacketResponseCode.AccessReject
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};
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}
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}
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