mirror of
https://github.com/n8n-io/n8n.git
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444 lines
12 KiB
TypeScript
444 lines
12 KiB
TypeScript
import type {
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ICredentialDataDecryptedObject,
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ICredentialsDecrypted,
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ICredentialTestFunctions,
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IDataObject,
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IExecuteFunctions,
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ILoadOptionsFunctions,
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INodeCredentialTestResult,
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INodeExecutionData,
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INodeType,
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INodeTypeDescription,
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} from 'n8n-workflow';
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import { LoggerProxy as Logger, NodeOperationError } from 'n8n-workflow';
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import { Attribute, Change } from 'ldapts';
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import { ldapFields } from './LdapDescription';
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import { BINARY_AD_ATTRIBUTES, createLdapClient, resolveBinaryAttributes } from './Helpers';
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export class Ldap implements INodeType {
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description: INodeTypeDescription = {
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displayName: 'Ldap',
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name: 'ldap',
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icon: 'file:ldap.svg',
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group: ['transform'],
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version: 1,
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subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
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description: 'Interact with LDAP servers',
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defaults: {
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name: 'LDAP',
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},
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inputs: ['main'],
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outputs: ['main'],
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credentials: [
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{
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// eslint-disable-next-line n8n-nodes-base/node-class-description-credentials-name-unsuffixed
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name: 'ldap',
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required: true,
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testedBy: 'ldapConnectionTest',
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},
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],
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properties: [
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{
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displayName: 'Operation',
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name: 'operation',
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type: 'options',
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noDataExpression: true,
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options: [
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{
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name: 'Compare',
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value: 'compare',
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description: 'Compare an attribute',
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action: 'Compare an attribute',
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},
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{
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name: 'Create',
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value: 'create',
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description: 'Create a new entry',
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action: 'Create a new entry',
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},
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{
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name: 'Delete',
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value: 'delete',
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description: 'Delete an entry',
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action: 'Delete an entry',
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},
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{
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name: 'Rename',
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value: 'rename',
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description: 'Rename the DN of an existing entry',
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action: 'Rename the DN of an existing entry',
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},
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{
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name: 'Search',
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value: 'search',
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description: 'Search LDAP',
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action: 'Search LDAP',
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},
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{
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name: 'Update',
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value: 'update',
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description: 'Update attributes',
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action: 'Update attributes',
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},
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],
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default: 'search',
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},
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{
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displayName: 'Debug',
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name: 'nodeDebug',
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type: 'boolean',
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isNodeSetting: true,
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default: false,
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noDataExpression: true,
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},
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...ldapFields,
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],
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};
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methods = {
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credentialTest: {
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async ldapConnectionTest(
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this: ICredentialTestFunctions,
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credential: ICredentialsDecrypted,
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): Promise<INodeCredentialTestResult> {
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const credentials = credential.data as ICredentialDataDecryptedObject;
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const client = await createLdapClient(credentials);
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try {
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await client.bind(credentials.bindDN as string, credentials.bindPassword as string);
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} catch (error) {
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return {
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status: 'Error',
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message: error.message,
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};
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} finally {
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await client.unbind();
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}
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return {
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status: 'OK',
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message: 'Connection successful!',
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};
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},
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},
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loadOptions: {
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async getAttributes(this: ILoadOptionsFunctions) {
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const credentials = await this.getCredentials('ldap');
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const client = await createLdapClient(credentials);
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try {
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await client.bind(credentials.bindDN as string, credentials.bindPassword as string);
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} catch (error) {
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await client.unbind();
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console.log(error);
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return [];
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}
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let results;
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const baseDN = this.getNodeParameter('baseDN', 0) as string;
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try {
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results = await client.search(baseDN, { sizeLimit: 200, paged: false }); // should this size limit be set in credentials?
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} catch (error) {
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console.log(error);
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return [];
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} finally {
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await client.unbind();
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}
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const unique = Object.keys(Object.assign({}, ...results.searchEntries));
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return unique.map((x) => ({
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name: x,
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value: x,
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}));
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},
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async getObjectClasses(this: ILoadOptionsFunctions) {
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const credentials = await this.getCredentials('ldap');
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const client = await createLdapClient(credentials);
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try {
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await client.bind(credentials.bindDN as string, credentials.bindPassword as string);
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} catch (error) {
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await client.unbind();
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console.log(error);
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return [];
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}
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const baseDN = this.getNodeParameter('baseDN', 0) as string;
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let results;
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try {
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results = await client.search(baseDN, { sizeLimit: 10, paged: false }); // should this size limit be set in credentials?
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} catch (error) {
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console.log(error);
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return [];
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} finally {
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await client.unbind();
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}
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const objects = [];
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for (const entry of results.searchEntries) {
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if (typeof entry.objectClass === 'string') {
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objects.push(entry.objectClass);
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} else {
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objects.push(...entry.objectClass);
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}
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}
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const unique = [...new Set(objects)];
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unique.push('custom');
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const result = [];
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for (const value of unique) {
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if (value === 'custom') {
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result.push({ name: 'custom', value: 'custom' });
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} else result.push({ name: value as string, value: `(objectclass=${value})` });
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}
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return result;
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},
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async getAttributesForDn(this: ILoadOptionsFunctions) {
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const credentials = await this.getCredentials('ldap');
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const client = await createLdapClient(credentials);
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try {
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await client.bind(credentials.bindDN as string, credentials.bindPassword as string);
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} catch (error) {
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await client.unbind();
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console.log(error);
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return [];
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}
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let results;
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const baseDN = this.getNodeParameter('dn', 0) as string;
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try {
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results = await client.search(baseDN, { sizeLimit: 1, paged: false });
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} catch (error) {
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console.log(error);
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return [];
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} finally {
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await client.unbind();
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}
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const unique = Object.keys(Object.assign({}, ...results.searchEntries));
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return unique.map((x) => ({
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name: x,
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value: x,
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}));
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},
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},
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};
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async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
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const nodeDebug = this.getNodeParameter('nodeDebug', 0) as boolean;
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const items = this.getInputData();
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const returnItems: INodeExecutionData[] = [];
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if (nodeDebug) {
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Logger.info(
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`[${this.getNode().type} | ${this.getNode().name}] - Starting with ${
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items.length
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} input items`,
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);
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}
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const credentials = await this.getCredentials('ldap');
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const client = await createLdapClient(
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credentials,
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nodeDebug,
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this.getNode().type,
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this.getNode().name,
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);
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try {
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await client.bind(credentials.bindDN as string, credentials.bindPassword as string);
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} catch (error) {
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delete error.cert;
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await client.unbind();
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if (this.continueOnFail()) {
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return [
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items.map((x) => {
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x.json.error = error.reason || 'LDAP connection error occurred';
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return x;
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}),
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];
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} else {
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throw new NodeOperationError(this.getNode(), error as Error, {});
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}
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}
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const operation = this.getNodeParameter('operation', 0);
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for (let itemIndex = 0; itemIndex < items.length; itemIndex++) {
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try {
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if (operation === 'compare') {
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const dn = this.getNodeParameter('dn', itemIndex) as string;
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const attributeId = this.getNodeParameter('id', itemIndex) as string;
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const value = this.getNodeParameter('value', itemIndex, '') as string;
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const res = await client.compare(dn, attributeId, value);
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returnItems.push({
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json: { dn, attribute: attributeId, result: res },
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pairedItem: { item: itemIndex },
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});
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} else if (operation === 'create') {
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const dn = this.getNodeParameter('dn', itemIndex) as string;
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const attributeFields = this.getNodeParameter('attributes', itemIndex) as IDataObject;
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const attributes: IDataObject = {};
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if (Object.keys(attributeFields).length) {
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//@ts-ignore
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attributeFields.attribute.map((attr) => {
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attributes[attr.id as string] = attr.value;
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});
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}
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await client.add(dn, attributes as unknown as Attribute[]);
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returnItems.push({
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json: { dn, result: 'success' },
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pairedItem: { item: itemIndex },
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});
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} else if (operation === 'delete') {
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const dn = this.getNodeParameter('dn', itemIndex) as string;
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await client.del(dn);
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returnItems.push({
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json: { dn, result: 'success' },
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pairedItem: { item: itemIndex },
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});
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} else if (operation === 'rename') {
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const dn = this.getNodeParameter('dn', itemIndex) as string;
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const targetDn = this.getNodeParameter('targetDn', itemIndex) as string;
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await client.modifyDN(dn, targetDn);
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returnItems.push({
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json: { dn: targetDn, result: 'success' },
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pairedItem: { item: itemIndex },
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});
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} else if (operation === 'update') {
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const dn = this.getNodeParameter('dn', itemIndex) as string;
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const attributes = this.getNodeParameter('attributes', itemIndex, {}) as IDataObject;
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const changes: Change[] = [];
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for (const [action, attrs] of Object.entries(attributes)) {
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//@ts-ignore
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attrs.map((attr) =>
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changes.push(
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new Change({
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// @ts-ignore
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operation: action,
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modification: new Attribute({
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type: attr.id as string,
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values: [attr.value],
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}),
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}),
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),
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);
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}
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await client.modify(dn, changes);
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returnItems.push({
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json: { dn, result: 'success', changes },
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pairedItem: { item: itemIndex },
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});
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} else if (operation === 'search') {
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const baseDN = this.getNodeParameter('baseDN', itemIndex) as string;
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let searchFor = this.getNodeParameter('searchFor', itemIndex) as string;
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const returnAll = this.getNodeParameter('returnAll', itemIndex);
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const limit = this.getNodeParameter('limit', itemIndex, 0);
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const options = this.getNodeParameter('options', itemIndex);
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const pageSize = this.getNodeParameter(
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'options.pageSize',
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itemIndex,
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1000,
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) as IDataObject;
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// Set paging settings
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delete options.pageSize;
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options.sizeLimit = returnAll ? 0 : limit;
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if (pageSize) {
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options.paged = { pageSize };
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}
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// Set attributes to retrieve
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if (typeof options.attributes === 'string') {
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options.attributes = options.attributes.split(',').map((attribute) => attribute.trim());
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}
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options.explicitBufferAttributes = BINARY_AD_ATTRIBUTES;
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if (searchFor === 'custom') {
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searchFor = this.getNodeParameter('customFilter', itemIndex) as string;
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} else {
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const searchText = this.getNodeParameter('searchText', itemIndex) as string;
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const attribute = this.getNodeParameter('attribute', itemIndex) as string;
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searchFor = `(&${searchFor}(${attribute}=${searchText}))`;
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}
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// Replace escaped filter special chars for ease of use
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// Character ASCII value
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// ---------------------------
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// * 0x2a
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// ( 0x28
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// ) 0x29
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// \ 0x5c
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searchFor = searchFor.replace(/\\\\/g, '\\5c');
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searchFor = searchFor.replace(/\\\*/g, '\\2a');
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searchFor = searchFor.replace(/\\\(/g, '\\28');
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searchFor = searchFor.replace(/\\\)/g, '\\29');
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options.filter = searchFor;
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if (nodeDebug) {
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Logger.info(
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`[${this.getNode().type} | ${this.getNode().name}] - Search Options ${JSON.stringify(
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options,
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null,
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2,
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)}`,
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);
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}
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const results = await client.search(baseDN, options);
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// Not all LDAP servers respect the sizeLimit
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if (!returnAll) {
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results.searchEntries = results.searchEntries.slice(0, limit);
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}
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resolveBinaryAttributes(results.searchEntries);
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returnItems.push.apply(
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returnItems,
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results.searchEntries.map((result) => ({
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json: result,
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pairedItem: { item: itemIndex },
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})),
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);
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}
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} catch (error) {
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if (this.continueOnFail()) {
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returnItems.push({ json: items[itemIndex].json, error, pairedItem: itemIndex });
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} else {
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await client.unbind();
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if (error.context) {
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error.context.itemIndex = itemIndex;
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throw error;
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}
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throw new NodeOperationError(this.getNode(), error as Error, {
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itemIndex,
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});
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}
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}
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}
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if (nodeDebug) {
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Logger.info(`[${this.getNode().type} | ${this.getNode().name}] - Finished`);
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}
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await client.unbind();
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return [returnItems];
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}
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}
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