CoreID/app/ldap/controllers/Users.controller.js
2020-05-20 22:28:30 -05:00

309 lines
12 KiB
JavaScript

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