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69 lines
1.5 KiB
69 lines
1.5 KiB
import { SMTPClient } from 'smtp-client';
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import { IAuthentication } from '../types/Authentication';
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interface ISMTPAuthOptions {
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host: string;
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port?: number;
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useSecureTransport?: boolean;
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validHosts?: string[];
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}
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export class SMTPAuth implements IAuthentication {
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private host: string;
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private port = 25;
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private useSecureTransport = false;
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private validHosts?: string[];
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constructor(options: ISMTPAuthOptions) {
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this.host = options.host;
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if (options.port !== undefined) {
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this.port = options.port;
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}
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if (options.useSecureTransport !== undefined) {
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this.useSecureTransport = options.useSecureTransport;
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}
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if (options.validHosts !== undefined) {
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this.validHosts = options.validHosts;
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}
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}
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async authenticate(username: string, password: string) {
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if (this.validHosts) {
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const domain = username.split('@').pop();
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if (!domain || !this.validHosts.includes(domain)) {
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console.info('invalid or no domain in username', username, domain);
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return false;
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}
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}
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const s = new SMTPClient({
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host: this.host,
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port: this.port,
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secure: this.useSecureTransport,
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tlsOptions: {
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servername: this.host // SNI (needs to be set for gmail)
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}
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});
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let success = false;
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try {
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await s.connect();
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await s.greet({ hostname: 'mx.domain.com' }); // runs EHLO command or HELO as a fallback
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await s.authPlain({ username, password }); // authenticates a user
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success = true;
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s.close(); // runs QUIT command
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} catch (err) {
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console.error('imap auth failed', err);
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}
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return success;
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}
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}
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