318 lines
13 KiB
JavaScript
318 lines
13 KiB
JavaScript
const LDAPController = require('./LDAPController')
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const LDAP = require('ldapjs')
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const bcrypt = require('bcrypt')
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class UsersController extends LDAPController {
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static get services() {
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return [
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...super.services,
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'output',
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'ldap_server',
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'models',
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'configs',
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'auth'
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]
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}
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constructor() {
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super()
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this.User = this.models.get('auth:User')
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}
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// Might need to override compare to support special handling for userPassword
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// TODO generalize some of the addition logic
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// TODO rework some of the registration and validation logic
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async add_people(req, res, next) {
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const Setting = this.models.get('Setting')
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if ( !(await Setting.get('auth.allow_registration')) ) {
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return next(new LDAP.InsufficientAccessRightsError('Operation not enabled.'))
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}
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if ( !req.user.can('ldap:add:users') ) {
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// make sure the add DN is in the auth_dn
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const auth_dn = this.ldap_server.auth_dn()
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if ( !auth_dn.parentOf(req.dn) ) {
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this.output.warn(`Attempted to perform user insertion on invalid DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// make sure the user object doesn't already exist
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const existing_user = await this.get_resource_from_dn(req.dn)
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if ( existing_user ) {
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return next(new LDAP.EntryAlreadyExistsError())
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}
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// build the user object from the request attributes
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const req_data = req.toObject().attributes
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const register_data = {
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first_name: req_data.cn ? req_data.cn[0] : '',
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last_name: req_data.sn ? req_data.sn[0] : '',
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email: req_data.mail ? req_data.mail[0] : '',
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username: req_data.uid ? req_data.uid[0] : '',
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password: req_data.userpassword ? req_data.userpassword[0] : '',
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}
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// TODO add data fields
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// Make sure the data uid matches the request DN
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if ( this.get_uid_from_dn(req.dn) !== register_data.username ) {
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this.output.error(`Attempted to register user where request DN's UID differs from the registration data: (${this.get_uid_from_dn(req.dn)} !== ${register_data.username})`)
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return next(new LDAP.ObjectclassViolationError(`Attempted to register user where request DN's UID differs from the registration data!`))
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}
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// Get the auth provider!
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const flitter = this.auth.get_provider('flitter')
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// Make sure required fields are provided
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const reg_errors = await flitter.validate_registration(register_data)
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const other_required_fields = ['first_name', 'last_name', 'email']
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for ( const field of other_required_fields ) {
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if ( !register_data[field] ) reg_errors.push(`Missing field: ${field}`)
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}
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if ( reg_errors.length > 0 ) {
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this.output.error(`Error(s) encountered during LDAP user registration: ${reg_errors.join('; ')}`)
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return next(new LDAP.ObjectclassViolationError(`Object add validation failure: ${reg_errors.join('; ')}`))
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}
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// save the user object
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const registration_args = await flitter.get_registration_args(register_data)
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delete register_data.username
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delete register_data.password
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registration_args[1] = {...register_data, ...registration_args[1]}
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const new_user = await flitter.register(...registration_args)
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this.output.success(`Created new LDAP user: ${new_user.uid}`)
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res.end()
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return next()
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}
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// TODO generalize some of the modification logic
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// TODO rework validation
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async modify_people(req, res, next) {
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if ( !req.user.can('ldap:modify:users') ) {
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return next(new LDAP.InsufficientAccessRightsError())
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}
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if ( req.changes.length <= 0 ) {
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return next(new LDAP.ProtocolError('Must specify at least one change.'))
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}
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// Make sure it's under the user auth DN
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const auth_dn = this.ldap_server.auth_dn()
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if ( !auth_dn.parentOf(req.dn) ) {
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this.output.warn(`Attempted to perform user modify on invalid DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// Get the target user
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const user = await this.get_resource_from_dn(req.dn)
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if ( !user ) {
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return next(new LDAP.NoSuchObjectError())
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}
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// Iterate over the changes
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const allow_replace = ['cn', 'sn', 'mail', 'userPassword']
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for ( const change of req.changes ) {
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const change_data = change.json.modification
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if ( change.operation === 'add' ) {
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if ( !change_data.type.startsWith('data_') ) {
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return next(new LDAP.OperationsError(`Addition of non 'data_' fields is not permitted.`))
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}
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const key = `ldap${change_data.type.substr(4)}`
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const val = change_data.vals
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if ( typeof user.data_get(key) !== 'undefined' ) {
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return next(new LDAP.AttributeOrValueExistsError())
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}
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user.data_set(key, val)
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} else if ( change.operation === 'replace' ) {
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if ( !allow_replace.includes(change_data.type) || change_data.type.startsWith('data_') ) {
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return next(new LDAP.OperationsError(`Modification of the ${change_data.type} field is not permitted.`))
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}
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if ( change_data.type.startsWith('data_') ) {
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const key = `ldap${change_data.type.substr(4)}`
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const val = change_data.vals
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user.data_set(key, val)
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} else if ( change_data.type === 'cn' ) {
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user.first_name = change_data.vals[0]
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} else if ( change_data.type === 'sn' ) {
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user.last_name = change_data.vals[0]
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} else if ( change_data.type === 'mail' ) {
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// Validate the e-mail address
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if ( !this.ldap_server.validate_email(change_data.vals[0]) ) {
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return next(new LDAP.OperationsError(`Unable to make modification: mail must be a valid e-mail address.`))
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}
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user.email = change_data.vals[0]
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} else if ( change_data.type === 'userPassword' ) {
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// Validate the password
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if ( change_data.vals[0].length < 8 ) {
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return next(new LDAP.OperationsError(`Unable to make modification: userPassword must be at least 8 characters.`))
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}
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// Hash the password before update
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user.password = await bcrypt.hash(change_data.vals[0], 10)
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}
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} else if ( change.operation === 'delete' ) {
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if ( !change_data.type.startsWith('data_') ) {
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return next(new LDAP.OperationsError(`Deletion of non 'data_' fields is not permitted.`))
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}
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const key = `ldap${change_data.type.substr(4)}`
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const json_obj = JSON.parse(user.data)
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delete json_obj[key]
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user.data = JSON.stringify(json_obj)
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} else {
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return next(new LDAP.ProtocolError(`Invalid/unknown modify operation: ${change.operation}`))
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}
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}
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await user.save()
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res.end()
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return next()
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}
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async get_base_dn() {
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return this.ldap_server.auth_dn()
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}
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parse_iam_targets(filter, target_ids = []) {
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if ( Array.isArray(filter?.filters) ) {
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for ( const sub_filter of filter.filters ) {
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target_ids = [...target_ids, ...this.parse_iam_targets(sub_filter)]
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}
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} else if ( filter?.attribute ) {
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if ( filter.attribute === 'iamtarget' ) {
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target_ids.push(filter.value)
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}
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}
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return target_ids
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}
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// TODO flitter-orm chunk query
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// TODO generalize scoped search logic
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async search_people(req, res, next) {
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if ( !req.user.can('ldap:search:users') ) {
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return next(new LDAP.InsufficientAccessRightsError())
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}
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const iam_targets = this.parse_iam_targets(req.filter)
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if ( req.scope === 'base' ) {
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// If scope is base, check if the base DN matches the filter.
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// If so, return it. Else, return empty.
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this.output.debug(`Running base DN search for users with DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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const user = await this.get_resource_from_dn(req.dn)
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// Make sure the user is ldap visible && match the filter
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if ( user && user.ldap_visible && req.filter.matches(await user.to_ldap(iam_targets)) ) {
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// If so, send the object
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res.send({
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dn: user.dn,//.format(this.configs.get('ldap:server.format')),
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attributes: await user.to_ldap(iam_targets),
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})
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this.output.debug({
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dn: user.dn.format(this.configs.get('ldap:server.format')),
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attributes: await user.to_ldap(iam_targets),
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})
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} else {
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this.output.debug(`User base search failed: either user not found, not visible, or filter mismatch`)
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global.ireq = req
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}
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} else if ( req.scope === 'one' ) {
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// If scope is one, find all entries that are the immediate
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// subordinates of the base DN that match the filter.
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this.output.debug(`Running one DN search for users with DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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// Fetch the LDAP-visible users
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const users = await this.User.ldap_directory()
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for ( const user of users ) {
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// Make sure the user os of the appropriate scope
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if ( req.dn.equals(user.dn) || user.dn.parent().equals(req.dn) ) {
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// Check if the filter matches
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if ( req.filter.matches(await user.to_ldap(iam_targets)) ) {
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// If so, send the object
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res.send({
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dn: user.dn,//.format(this.configs.get('ldap:server.format')),
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attributes: await user.to_ldap(iam_targets),
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})
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}
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}
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}
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} else if ( req.scope === 'sub' ) {
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// If scope is sub, find all entries that are subordinates
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// of the base DN at any level and match the filter.
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this.output.debug(`Running sub DN search for users with DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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// Fetch the users as LDAP objects
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const users = await this.User.ldap_directory()
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this.output.debug(`Searching ${users.length} users...`)
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this.output.debug(`Request DN: ${req.dn}`)
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this.output.debug(`Filter:`)
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this.output.debug(req.filter.json)
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for ( const user of users ) {
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this.output.debug(`Checking ${user.uid}...`)
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this.output.debug(`DN: ${user.dn}`)
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this.output.debug(`Req DN equals: ${req.dn.equals(user.dn)}`)
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this.output.debug(`Req DN parent of: ${req.dn.parentOf(user.dn)}`)
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// Make sure the user is of appropriate scope
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if ( req.dn.equals(user.dn) || req.dn.parentOf(user.dn) ) {
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this.output.debug(`Matches sub scope. Matches filter? ${req.filter.matches(await user.to_ldap(iam_targets))}`)
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// Check if filter matches
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if ( req.filter.matches(await user.to_ldap(iam_targets)) ) {
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// If so, send the object
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res.send({
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dn: user.dn,//.format(this.configs.get('ldap:server.format')),
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attributes: await user.to_ldap(iam_targets),
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})
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}
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}
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}
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} else {
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this.output.error(`Attempted to perform LDAP search with invalid scope: ${req.scope}`)
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return next(new LDAP.OtherError('Attempted to perform LDAP search with invalid scope.'))
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}
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res.end()
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return next()
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}
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get_uid_from_dn(dn) {
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const uid_field = this.ldap_server.config.schema.auth.user_id
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try {
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if ( typeof dn === 'string' ) dn = LDAP.parseDN(dn)
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return dn.rdns[0].attrs[uid_field].value
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} catch (e) {}
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}
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async get_resource_from_dn(dn) {
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const uid = this.get_uid_from_dn(dn)
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if ( uid ) {
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const User = this.models.get('auth:User')
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return User.findOne({uid, ldap_visible: true})
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}
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}
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}
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module.exports = exports = UsersController
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