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feat: support multiple search bases #292

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feat: support multiple search bases #292

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110 changes: 59 additions & 51 deletions src/auth/GoogleLDAPAuth.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -12,8 +12,8 @@ const usernameFields = ['posixUid', 'mail'];
interface IGoogleLDAPAuthOptions {
/** base DN
* e.g. 'dc=hokify,dc=com', */
base: string;
searchBase?: string; // default ou=users,{{base}}
base: string | string[];
searchBase?: string | string[]; // default ou=users,{{base}}
tls: {
keyFile: string;
certFile: string;
Expand All @@ -27,19 +27,20 @@ interface IGoogleLDAPAuthOptions {
}

export class GoogleLDAPAuth implements IAuthentication {
private base: string;

private config: ClientOptions;

private searchBase: string;
private searchBase: string | string[];

private dnsFetch: Promise<{ [key: string]: string }> | undefined;

private logger: IContextLogger;

constructor(config: IGoogleLDAPAuthOptions, logger: ILogger) {
this.base = config.base;
this.searchBase = config.searchBase || `ou=users,${this.base}`;
this.searchBase =
config.searchBase ||
(Array.isArray(config.base)
? config.base.map((base) => `ou=users,${base}`)
: `ou=users,${config.base}`);
this.logger = logger.context('GoogleLDAPAuth');

const tlsOptions = {
Expand All @@ -64,55 +65,62 @@ export class GoogleLDAPAuth implements IAuthentication {
try {
const dns: { [key: string]: string } = {};

const dnResult = await new Promise<{ [key: string]: string }>((resolve, reject) => {
const ldapDNClient = ldapjs.createClient(this.config).on('error', (error) => {
this.logger.error('Error in ldap', error);
reject(error);
});

ldapDNClient.search(
this.searchBase,
{
scope: 'sub',
// only select required attributes
attributes: [...usernameFields, 'dn'],
},
(err, res) => {
if (err) {
reject(err);
return;
}

res.on('searchEntry', (entry) => {
// this.logger.debug('entry: ' + JSON.stringify(entry.object));
usernameFields.forEach((field) => {
const index = entry.object[field] as string;
dns[index] = entry.object.dn;
});
});

res.on('searchReference', (referral) => {
this.logger.debug(`referral: ${referral.uris.join()}`);
});

res.on('error', (ldapErr) => {
this.logger.error(`error: ${JSON.stringify(ldapErr)}`);
reject(ldapErr);
});
const searchBases = Array.isArray(this.searchBase) ? this.searchBase : [this.searchBase];

res.on('end', (result) => {
this.logger.debug(`ldap status: ${result?.status}`);
await Promise.all(
searchBases.map(
(searchBase) =>
new Promise<void>((resolve, reject) => {
const ldapDNClient = ldapjs.createClient(this.config).on('error', (error) => {
this.logger.error('Error in ldap', error);
reject(error);
});

// this.logger.debug('allValidDNsCache', this.allValidDNsCache);
resolve(dns);
});
}
);
});
ldapDNClient.search(
searchBase,
{
scope: 'sub',
// only select required attributes
attributes: [...usernameFields, 'dn'],
},
(err, res) => {
if (err) {
reject(err);
return;
}

res.on('searchEntry', (entry) => {
// this.logger.debug('entry: ' + JSON.stringify(entry.object));
usernameFields.forEach((field) => {
const index = entry.object[field] as string;
dns[index] = entry.object.dn;
});
});

res.on('searchReference', (referral) => {
this.logger.debug(`referral: ${referral.uris.join()}`);
});

res.on('error', (ldapErr) => {
this.logger.error(`error: ${JSON.stringify(ldapErr)}`);
reject(ldapErr);
});

res.on('end', (result) => {
this.logger.debug(`ldap status: ${result?.status}`);

// this.logger.debug('allValidDNsCache', this.allValidDNsCache);
resolve();
});
}
);
})
)
);
setTimeout(() => {
this.dnsFetch = undefined;
}, 60 * 60 * 12 * 1000); // reset cache after 12h
return dnResult;
return dns;
} catch (err) {
console.error('dns fetch err', err);
// retry dns fetch next time
Expand Down