mirror of
https://github.com/snipe/snipe-it.git
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556 lines
20 KiB
PHP
556 lines
20 KiB
PHP
<?php
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declare(strict_types=1);
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namespace App\Services;
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use Adldap\Adldap;
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use Adldap\Models\User as AdldapUser;
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use Adldap\Query\Paginator;
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use Adldap\Schemas\Schema;
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use App\Helpers\Helper;
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use App\Models\User;
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use Exception;
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use Illuminate\Support\Collection;
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use Illuminate\Support\Facades\Log;
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/**
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* LDAP queries.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*/
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class LdapAd extends LdapAdConfiguration
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{
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/* The following is _probably_ the correct logic, but we can't use it because
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some users may have been dependent upon the previous behavior, and this
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could cause additional access to be available to users they don't want
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to allow to log in.
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$useraccountcontrol = $results[$i]['useraccountcontrol'][0];
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if(
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// based on MS docs at: https://support.microsoft.com/en-us/help/305144/how-to-use-useraccountcontrol-to-manipulate-user-account-properties
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($useraccountcontrol & 0x200) && // is a NORMAL_ACCOUNT
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!($useraccountcontrol & 0x02) && // *and* _not_ ACCOUNTDISABLE
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!($useraccountcontrol & 0x10) // *and* _not_ LOCKOUT
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) {
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$user->activated = 1;
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} else {
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$user->activated = 0;
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} */
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const AD_USER_ACCOUNT_CONTROL_FLAGS = [
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'512', // 0x200 NORMAL_ACCOUNT
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'544', // 0x220 NORMAL_ACCOUNT, PASSWD_NOTREQD
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'66048', // 0x10200 NORMAL_ACCOUNT, DONT_EXPIRE_PASSWORD
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'66080', // 0x10220 NORMAL_ACCOUNT, PASSWD_NOTREQD, DONT_EXPIRE_PASSWORD
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'262656', // 0x40200 NORMAL_ACCOUNT, SMARTCARD_REQUIRED
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'262688', // 0x40220 NORMAL_ACCOUNT, PASSWD_NOTREQD, SMARTCARD_REQUIRED
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'328192', // 0x50200 NORMAL_ACCOUNT, SMARTCARD_REQUIRED, DONT_EXPIRE_PASSWORD
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'328224', // 0x50220 NORMAL_ACCOUNT, PASSWD_NOT_REQD, SMARTCARD_REQUIRED, DONT_EXPIRE_PASSWORD
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'4260352',// 0x410200 NORMAL_ACCOUNT, DONT_EXPIRE_PASSWORD, DONT_REQ_PREAUTH
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'1049088',// 0x100200 NORMAL_ACCOUNT, NOT_DELEGATED
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'1114624',// 0x110200 NORMAL_ACCOUNT, NOT_DELEGATED, DONT_EXPIRE_PASSWORD
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];
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/**
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* The LDAP results per page.
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*/
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const PAGE_SIZE = 500;
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/**
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* A base dn.
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*
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* @var string
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*/
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public $baseDn = null;
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/**
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* Adldap instance.
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*
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* @var \Adldap\Adldap
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*/
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protected $ldap;
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/**
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* Initialize LDAP from user settings
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*
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* @since 5.0.0
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*
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* @return void
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*/
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public function init()
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{
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// Already initialized
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if ($this->ldap) {
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return true;
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}
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parent::init();
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if($this->isLdapEnabled()) {
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if($this->ldapSettings['is_ad'] == 0 ) { //only for NON-AD setups!
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$this->ldapConfig['account_prefix'] = $this->ldapSettings['ldap_auth_filter_query'];
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$this->ldapConfig['account_suffix'] = ','.$this->ldapConfig['base_dn'];
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} /*
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To the point mentioned in ldapLogin(), we might want to add an 'else' clause here that
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sets up an 'account_suffix' of '@'.$this->ldapSettings['ad_domain'] *IF* the user has
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$this->ldapSettings['ad_append_domain'] enabled.
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That code in ldapLogin gets simplified, in exchange for putting all the weirdness here only.
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*/
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$this->ldap = new Adldap();
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$this->ldap->addProvider($this->ldapConfig);
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return true;
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}
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return false;
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}
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public function __construct() {
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$this->init();
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}
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/**
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* Create a user if they successfully login to the LDAP server.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param string $username
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* @param string $password
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*
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* @return \App\Models\User
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*
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* @throws Exception
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*/
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public function ldapLogin(string $username, string $password): User
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{
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if ($this->ldapSettings['ad_append_domain']) { //if you're using 'userprincipalname', don't check the ad_append_domain checkbox
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$login_username = $username . '@' . $this->ldapSettings['ad_domain']; // I feel like could can be solved with the 'suffix' feature? Then this would be easier.
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} else {
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$login_username = $username;
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}
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if ($this->ldap->auth()->attempt($login_username, $password, true) === false) {
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throw new Exception('Unable to validate user credentials!');
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}
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// Should we sync the logged in user
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Log::debug('Attempting to find user in LDAP directory');
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$record = $this->ldap->search()->findBy($this->ldapSettings['ldap_username_field'], $username);
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if($record) {
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if ($this->isLdapSync($record)) {
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$this->syncUserLdapLogin($record, $password);
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}
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}
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else {
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throw new Exception('Unable to find user in LDAP directory!');
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}
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$user = User::where('username', $username)
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->whereNull('deleted_at')->where('ldap_import', '=', 1)
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->where('activated', '=', '1')->first();
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/* Above, I could've just done ->firstOrFail() which would've been cleaner, but it would've been miserable to
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troubleshoot if it ever came up (giving a really generic and untraceable error message)
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*/
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if (!$user) {
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throw new Exception("User is either deleted, not activated (can't log in), not from LDAP, or can't be found in database");
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}
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return $user;
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}
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/**
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* Set the user information based on the LDAP settings.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param \Adldap\Models\User $user
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* @param null|Collection $defaultLocation
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* @param null|Collection $mappedLocations
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*
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* @return null|\App\Models\User
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*/
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public function processUser(AdldapUser $user, ?Collection $defaultLocation=null, ?Collection $mappedLocations=null): ?User
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{
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// Only sync active users <- I think this actually means 'existing', not 'activated/deactivated'
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if(!$user) {
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return null;
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}
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$snipeUser = [];
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$snipeUser['username'] = $user->{$this->ldapSettings['ldap_username_field']}[0] ?? '';
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$snipeUser['employee_number'] = $user->{$this->ldapSettings['ldap_emp_num']}[0] ?? '';
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$snipeUser['lastname'] = $user->{$this->ldapSettings['ldap_lname_field']}[0] ?? '';
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$snipeUser['firstname'] = $user->{$this->ldapSettings['ldap_fname_field']}[0] ?? '';
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$snipeUser['email'] = $user->{$this->ldapSettings['ldap_email']}[0] ?? '';
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$snipeUser['title'] = $user->getTitle() ?? '';
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$snipeUser['telephonenumber'] = $user->getTelephoneNumber() ?? '';
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/*
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* $locationId being 'null' means we have no per-OU location information,
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* but instead of explicitly setting it to null - which would override any admin-generated
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* location assignments - we just don't set it at all. For a brand new User, the 'default null'
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* on the column will cover us. For an already existing user, this will not override any
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* locations that were explicitly chosen by the administrators.
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*
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* When syncing with a particular 'default location' in mind, those should still be respected
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* and it *will* override the administrators previous choices. I think this is a fair compromise.
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*/
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$locationId = $this->getLocationId($user, $defaultLocation, $mappedLocations);
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if ($locationId !== null ) {
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$snipeUser['location_id'] = $locationId;
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}
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$activeStatus = $this->getActiveStatus($user);
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if ($activeStatus !== null) {
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$snipeUser['activated'] = $activeStatus;
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}
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return $this->setUserModel($snipeUser);
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}
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/**
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* Set the User model information.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param array $userInfo The user info to save to the database
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*
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* @return \App\Models\User
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*/
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public function setUserModel(array $userInfo): User
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{
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// If the username exists, return the user object, otherwise create a new user object
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$user = User::firstOrNew([
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'username' => $userInfo['username'],
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]);
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$user->username = $user->username ?? trim($userInfo['username']);
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$user->password = $user->password ?? Helper::generateEncyrptedPassword();
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$user->first_name = trim($userInfo['firstname']);
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$user->last_name = trim($userInfo['lastname']);
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$user->email = trim($userInfo['email']);
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$user->employee_num = trim($userInfo['employee_number']);
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$user->jobtitle = trim($userInfo['title']);
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$user->phone = trim($userInfo['telephonenumber']);
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if(array_key_exists('activated',$userInfo)) {
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$user->activated = $userInfo['activated'];
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} else if ( !$user->exists ) { // no 'activated' flag was set or unset, *AND* this user is new - activate by default.
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$user->activated = 1;
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}
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if(array_key_exists('location_id',$userInfo)) {
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$user->location_id = $userInfo['location_id'];
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}
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$user->notes = 'Imported from LDAP';
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$user->ldap_import = 1;
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return $user;
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}
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/**
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* Sync a user who has logged in by LDAP.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param \Adldap\Models\User $record
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* @param string $password
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*
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* @throws Exception
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*/
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private function syncUserLdapLogin(AdldapUser $record, string $password): void
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{
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$user = $this->processUser($record);
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if (is_null($user->last_login)) {
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$user->notes = 'Imported on first login from LDAP2';
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}
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if ($this->ldapSettings['ldap_pw_sync']) {
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Log::debug('Syncing users password with LDAP directory.');
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$user->password = bcrypt($password);
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}
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if (!$user->save()) {
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Log::debug('Could not save user. '.$user->getErrors());
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throw new Exception('Could not save user: '.$user->getErrors());
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}
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}
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/**
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* Check to see if we should sync the user with the LDAP directory.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param \Adldap\Models\User $user
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*
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* @return bool
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*/
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private function isLdapSync(AdldapUser $user): bool
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{
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if ( !$this->ldapSettings['ldap_active_flag']) {
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return true; // always sync if you didn't define an 'active' flag
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}
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if ( $user->{$this->ldapSettings['ldap_active_flag']} && // if your LDAP user has the aforementioned flag as an attribute *AND*
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count($user->{$this->ldapSettings['ldap_active_flag']}) == 1 && // if that attribute has exactly one value *AND*
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strtolower($user->{$this->ldapSettings['ldap_active_flag']}[0]) == 'false') { // that value is the string 'false' (regardless of case),
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return false; // then your user is *INACTIVE* - return false
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}
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// otherwise, return true
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return true;
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}
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/**
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* Set the active status of the user.
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* Returns 0 or 1 if the user is deactivated or activated
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* or returns null if we just don't know
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param \Adldap\Models\User $user
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*
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* @return int (or null)
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*/
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private function getActiveStatus(AdldapUser $user): ?int
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{
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/*
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* Check to see if we are connected to an AD server
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* if so, check the Active Directory User Account Control Flags
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* If the admin has set their own 'active flag' - respect that instead
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* (this may work to allow AD users to ignore the built-in UAC stuff that AD does)
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*/
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if ($user->hasAttribute($user->getSchema()->userAccountControl()) && !$this->ldapSettings['ldap_active_flag']) {
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\Log::debug('This is AD - userAccountControl is'. $user->getSchema()->userAccountControl());
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$activeStatus = (in_array($user->getUserAccountControl(), self::AD_USER_ACCOUNT_CONTROL_FLAGS)) ? 1 : 0;
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} else {
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// If there is no activated flag, then we can't make any determination about activated/deactivated
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if (false == $this->ldapSettings['ldap_active_flag']) {
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\Log::debug('ldap_active_flag is false - no ldap_active_flag is set');
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return null;
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}
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// If there *is* an activated flag, then respect it *only* if it is actually present. If it's not there, ignore it.
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if (!$user->hasAttribute($this->ldapSettings['ldap_active_flag'])) {
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return null; // 'active' flag is defined, but does not exist on returned user record. So we don't know if they're active or not.
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}
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// if $user has the flag *AND* that flag has exactly one value -
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if ( $user->{$this->ldapSettings['ldap_active_flag']} && count($user->{$this->ldapSettings['ldap_active_flag']}) == 1 ) {
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$active_flag_value = $user->{$this->ldapSettings['ldap_active_flag']}[0];
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// if the value of that flag is case-insensitively the string 'false' or boolean false
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if ( strcasecmp($active_flag_value, "false") == 0 || $active_flag_value === false ) {
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return 0; // then make them INACTIVE
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} else {
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return 1; // otherwise active
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}
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}
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return 1; // fail 'open' (active) if we have the attribute and it's multivalued or empty; that's weird
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}
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return $activeStatus;
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}
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/**
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* Get a default selected location, or a OU mapped location if available.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @param \Adldap\Models\User $user
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* @param Collection|null $defaultLocation
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* @param Collection|null $mappedLocations
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*
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* @return null|int
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*/
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private function getLocationId(AdldapUser $user, ?Collection $defaultLocation, ?Collection $mappedLocations): ?int
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{
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$locationId = null;
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// Set the users default locations, if set
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if ($defaultLocation) {
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$locationId = $defaultLocation->keys()->first();
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}
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// Check to see if the user is in a mapped location
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if ($mappedLocations) {
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$location = $mappedLocations->filter(function ($value, $key) use ($user) {
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//if ($user->inOu($value)) { // <----- *THIS* seems not to be working, and it seems more 'intelligent' - but it's literally just a strpos() call, and it doesn't work quite right against plain strings
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$user_ou = substr($user->getDn(), -strlen($value)); // get the LAST chars of the user's DN, the count of those chars being the length of the thing we're checking against
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if(strcasecmp($user_ou, $value) === 0) { // case *IN*sensitive comparision - some people say OU=blah, some say ou=blah. returns 0 when strings are identical (which is a little odd, yeah)
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return $key; // WARNING: we are doing a 'filter' - not a regular for-loop. So the answer(s) get "return"ed into the $location array
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}
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});
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if ($location->count() > 0) {
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$locationId = $location->keys()->first(); // from the returned $location array from the ->filter() method above, we return the first match - there should be only one
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}
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}
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return $locationId;
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}
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/**
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* Get the base dn for the query.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @return string
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*/
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private function getBaseDn(): string
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{
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if (!is_null($this->baseDn)) {
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return $this->baseDn;
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}
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return $this->ldapSettings['ldap_basedn'];
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}
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/**
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* Format the ldap filter if needed.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @return null|string
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*/
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private function getFilter(): ?string
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{
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$filter = $this->ldapSettings['ldap_filter'];
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if (!$filter) {
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return null;
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}
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// Add surrounding parentheses as needed
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$paren = mb_substr($filter, 0, 1, 'utf-8');
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if ('(' !== $paren) {
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return '('.$filter.')';
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}
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return $filter;
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}
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/**
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* Get the selected fields to return
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* This should help with memory on large result sets as we are not returning all fields.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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*
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* @since 5.0.0
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*
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* @return array
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*/
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private function getSelectedFields(): array
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{
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/** @var Schema $schema */
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$schema = new $this->ldapConfig['schema'];
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return array_values(array_filter([
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$this->ldapSettings['ldap_username_field'],
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$this->ldapSettings['ldap_fname_field'],
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$this->ldapSettings['ldap_lname_field'],
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$this->ldapSettings['ldap_email'],
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$this->ldapSettings['ldap_emp_num'],
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$this->ldapSettings['ldap_active_flag'],
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$schema->memberOf(),
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$schema->userAccountControl(),
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$schema->title(),
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$schema->telephone(),
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]));
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}
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/**
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* Test the bind user connection.
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*
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* @author Wes Hulette <jwhulette@gmail.com>
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* @throws \Exception
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* @since 5.0.0
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*/
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public function testLdapAdBindConnection(): void
|
|
{
|
|
try {
|
|
$this->ldap->search()->ous()->get()->count(); //it's saying this is null?
|
|
} catch (Exception $th) {
|
|
Log::error($th->getMessage());
|
|
throw new Exception('Unable to search LDAP directory!');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test the user can connect to the LDAP server.
|
|
*
|
|
* @author Wes Hulette <jwhulette@gmail.com>
|
|
* @throws \Exception
|
|
* @since 5.0.0
|
|
*/
|
|
public function testLdapAdUserConnection(): void
|
|
{
|
|
try {
|
|
$this->ldap->connect();
|
|
} catch (\Adldap\Auth\BindException $e) {
|
|
Log::error($e);
|
|
throw new Exception('Unable to connect to LDAP directory!');
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Test the LDAP configuration by returning up to 10 users.
|
|
*
|
|
* @author Wes Hulette <jwhulette@gmail.com>
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @return Collection
|
|
*/
|
|
public function testUserImportSync(): Collection
|
|
{
|
|
$testUsers = collect($this->getLdapUsers()->getResults())->chunk(10)->first();
|
|
if ($testUsers) {
|
|
return $testUsers->map(function ($item) {
|
|
return (object) [
|
|
'username' => $item->{$this->ldapSettings['ldap_username_field']}[0] ?? null,
|
|
'employee_number' => $item->{$this->ldapSettings['ldap_emp_num']}[0] ?? null,
|
|
'lastname' => $item->{$this->ldapSettings['ldap_lname_field']}[0] ?? null,
|
|
'firstname' => $item->{$this->ldapSettings['ldap_fname_field']}[0] ?? null,
|
|
'email' => $item->{$this->ldapSettings['ldap_email']}[0] ?? null,
|
|
];
|
|
});
|
|
}
|
|
|
|
return collect();
|
|
}
|
|
|
|
/**
|
|
* Query the LDAP server to get the users to process and return a page set.
|
|
*
|
|
* @author Wes Hulette <jwhulette@gmail.com>
|
|
*
|
|
* @since 5.0.0
|
|
*
|
|
* @return \Adldap\Query\Paginator
|
|
*/
|
|
public function getLdapUsers(): Paginator
|
|
{
|
|
$search = $this->ldap->search()->users()->in($this->getBaseDn()); //this looks wrong; we should instead have a passable parameter that does this, and use this as a 'sane' default, yeah?
|
|
|
|
$filter = $this->getFilter();
|
|
if (!is_null($filter)) {
|
|
$search = $search->rawFilter($filter);
|
|
}
|
|
|
|
return $search->select($this->getSelectedFields())
|
|
->paginate(self::PAGE_SIZE);
|
|
}
|
|
}
|