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59 lines
1.7 KiB
59 lines
1.7 KiB
// 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 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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getEAPType(): number {
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return 6;
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}
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extractValue(msg: Buffer) {
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let tillBinary0 = msg.findIndex((v) => v === 0) || msg.length;
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if (tillBinary0 < 0) {
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tillBinary0 = msg.length - 1;
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}
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return msg.slice(0, tillBinary0 + 1); // use token til binary 0.
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}
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identify(identifier: number, _stateID: string): IPacketHandlerResult {
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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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_,
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identity?: string
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): Promise<IPacketHandlerResult> {
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const username = identity; // this.loginData.get(stateID) as Buffer | undefined;
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const { data } = decodeEAPHeader(msg);
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const token = this.extractValue(data);
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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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attributes: (success && [['User-Name', username]]) || undefined,
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};
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}
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}
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