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114 lines
3.8 KiB
114 lines
3.8 KiB
const { Injectable } = require('flitter-di')
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const { ImplementationError } = require('libflitter')
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const LDAP = require('ldapjs')
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class LDAPController extends Injectable {
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resource_type = 'items'
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// TODO make use of this better
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check_attribute = 'ldap_visible' // or false
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static get services() {
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return [...super.services, 'ldap_server', 'configs']
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}
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async compare(req, res, next) {
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if ( !req.user.can(`ldap:compare:${this.resource_type}`)) {
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// Make sure the resource exists
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const item = await this.get_resource_from_dn(req.dn)
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if ( !item ) {
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return next(LDAP.NoSuchObjectError())
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}
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// Make sure it has the requested attribute
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const value = (await item.to_ldap())[req.attribute]
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if ( typeof value === 'undefined' ) {
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return next(new LDAP.NoSuchAttributeError())
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}
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// Check if it matches the request value
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const values = Array.isArray(value) ? value : [value]
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const matches = values.some(x => x === req.value)
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res.end(matches)
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return next()
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}
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async bind(req, res, next) {
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const auth_dn = this.ldap_server.auth_dn()
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// Make sure the DN is valid
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if ( !req.dn.childOf(auth_dn) ) {
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this.output.debug(`Bind failure: ${req.dn} not in ${auth_dn}`)
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return next(new LDAP.InvalidCredentialsError('Cannot bind to DN outsize of the authentication base.'))
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}
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// Get the item
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const item = await this.get_resource_from_dn(req.dn)
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if ( !item ) {
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this.output.debug(`Bind failure: ${req.dn} not found`)
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return next(new LDAP.NoSuchObjectError())
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}
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// If the object is can-able, make sure it can bind
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if ( typeof item.can === 'function' && !item.can('ldap:bind') ) {
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this.output.debug(`Bind failure: User not allowed to bind`)
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// Check if the credentials are valid
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if ( !(await item.check_credential_string(req.credentials)) ) {
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return next(new LDAP.InvalidCredentialsError())
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}
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// Check if the resource has a trap. If so, deny access.
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if ( item.trap ) {
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return next(new LDAP.InvalidCredentialsError('This resource currently has a login trap set. Please visit the web UI to release.'))
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}
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this.output.info(`Successfully bound resource as DN: ${req.dn.format(this.configs.get('ldap:server.format'))}.`)
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res.end()
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return next()
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}
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async delete(req, res, next) {
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if ( !req.user.can(`ldap:delete:${this.resource_type}`) ) {
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return next(new LDAP.InsufficientAccessRightsError())
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}
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// Get the base DN
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const base_dn = await this.get_base_dn()
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// Make sure it's a parent of the request DN
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if ( !base_dn.parentOf(req.dn) ) {
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this.output.warn(`Attempted to perform resource deletion on invalid DN: ${req.dn.format(this.configs.get('ldap:server.format'))}`)
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return next(new LDAP.InsufficientAccessRightsError(`Target DN must be a member of the base DN: ${base_dn.format(this.configs.get('ldap:server.format'))}.`))
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}
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// Fetch the resource (error if not found)
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const item = await this.get_resource_from_dn(req.dn)
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if ( !item ) {
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return next(new LDAP.NoSuchObjectError())
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}
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// Delete it - TODO full soft delete, or just ldap_visible = false?
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await item.delete()
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res.end()
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return next()
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}
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async get_resource_from_dn(dn) {
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throw new ImplementationError()
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}
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async get_base_dn() {
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throw new ImplementationError()
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}
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}
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module.exports = exports = LDAPController
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