mirror of
https://github.com/snipe/snipe-it.git
synced 2024-09-20 07:47:41 -07:00
364 lines
16 KiB
PHP
364 lines
16 KiB
PHP
<?php
|
|
|
|
namespace App\Models;
|
|
|
|
use App\Models\Setting;
|
|
use App\Models\User;
|
|
use Exception;
|
|
use Illuminate\Database\Eloquent\Model;
|
|
use Illuminate\Support\Facades\Log;
|
|
use Illuminate\Support\Facades\Crypt;
|
|
|
|
/***********************************************
|
|
* TODOS:
|
|
*
|
|
* First off, we should probably make it so that the main LDAP thing we're using is an *instance* of this class,
|
|
* rather than the static methods we use here. We should probably load up that class with its settings, so we
|
|
* don't have to explicitly refer to them so often.
|
|
*
|
|
* Then, we should probably look at embedding some of the logic we use elsewhere into here - the various methods
|
|
* should either return a User or false, or other things like that. Don't make the consumers of this class reach
|
|
* into its guts. While that conflates this model with the User model, I think having the appropriate logic for
|
|
* turning LDAP people into Users ought to belong here, so it's easier on the consumer of this class.
|
|
*
|
|
* We're probably going to have to eventually make it so that Snipe-IT users can define multiple LDAP servers,
|
|
* and having this as a more instance-oriented class will be a step in the right direction.
|
|
***********************************************/
|
|
|
|
class Ldap extends Model
|
|
{
|
|
/**
|
|
* Makes a connection to LDAP using the settings in Admin > Settings.
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
* @return connection
|
|
*/
|
|
public static function connectToLdap()
|
|
{
|
|
$ldap_host = Setting::getSettings()->ldap_server;
|
|
$ldap_version = Setting::getSettings()->ldap_version ?: 3;
|
|
$ldap_server_cert_ignore = Setting::getSettings()->ldap_server_cert_ignore;
|
|
$ldap_use_tls = Setting::getSettings()->ldap_tls;
|
|
|
|
// If we are ignoring the SSL cert we need to setup the environment variable
|
|
// before we create the connection
|
|
if ($ldap_server_cert_ignore == '1') {
|
|
putenv('LDAPTLS_REQCERT=never');
|
|
}
|
|
|
|
// If the user specifies where CA Certs are, make sure to use them
|
|
if (env('LDAPTLS_CACERT')) {
|
|
putenv('LDAPTLS_CACERT='.env('LDAPTLS_CACERT'));
|
|
}
|
|
|
|
$connection = @ldap_connect($ldap_host);
|
|
|
|
if (! $connection) {
|
|
throw new Exception('Could not connect to LDAP server at '.$ldap_host.'. Please check your LDAP server name and port number in your settings.');
|
|
}
|
|
|
|
// Needed for AD
|
|
ldap_set_option($connection, LDAP_OPT_REFERRALS, 0);
|
|
ldap_set_option($connection, LDAP_OPT_PROTOCOL_VERSION, $ldap_version);
|
|
ldap_set_option($connection, LDAP_OPT_NETWORK_TIMEOUT, 20);
|
|
|
|
if (Setting::getSettings()->ldap_client_tls_cert && Setting::getSettings()->ldap_client_tls_key) {
|
|
ldap_set_option(null, LDAP_OPT_X_TLS_CERTFILE, Setting::get_client_side_cert_path());
|
|
ldap_set_option(null, LDAP_OPT_X_TLS_KEYFILE, Setting::get_client_side_key_path());
|
|
}
|
|
|
|
if ($ldap_use_tls=='1') {
|
|
ldap_start_tls($connection);
|
|
}
|
|
|
|
|
|
return $connection;
|
|
}
|
|
|
|
|
|
/**
|
|
* Binds/authenticates the user to LDAP, and returns their attributes.
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
* @param $username
|
|
* @param $password
|
|
* @param bool|false $user
|
|
* @return bool true if the username and/or password provided are valid
|
|
* false if the username and/or password provided are invalid
|
|
* array of ldap_attributes if $user is true
|
|
*/
|
|
public static function findAndBindUserLdap($username, $password)
|
|
{
|
|
$settings = Setting::getSettings();
|
|
$connection = self::connectToLdap();
|
|
$ldap_username_field = $settings->ldap_username_field;
|
|
$baseDn = $settings->ldap_basedn;
|
|
$userDn = $ldap_username_field.'='.$username.','.$settings->ldap_basedn;
|
|
|
|
if ($settings->is_ad == '1') {
|
|
// Check if they are using the userprincipalname for the username field.
|
|
// If they are, we can skip building the UPN to authenticate against AD
|
|
if ($ldap_username_field == 'userprincipalname') {
|
|
$userDn = $username;
|
|
} else {
|
|
// TODO - we no longer respect the "add AD Domain to username" checkbox, but it still exists in settings.
|
|
// We should probably just eliminate that checkbox to avoid confusion.
|
|
// We let it sit in the DB, unused, to facilitate people downgrading (if they decide to).
|
|
// Hopefully, in a later release, we can remove it from the settings.
|
|
// This logic instead just means that if we're using UPN, we don't append ad_domain, if we aren't, then we do.
|
|
// Hopefully that should handle all of our use cases, but if not we can backport our old logic.
|
|
$userDn = ($settings->ad_domain != '') ? $username.'@'.$settings->ad_domain : $username.'@'.$settings->email_domain;
|
|
}
|
|
}
|
|
|
|
$filterQuery = $settings->ldap_auth_filter_query.$username;
|
|
$filter = Setting::getSettings()->ldap_filter; //FIXME - this *does* respect the ldap filter, but I believe that AdLdap2 did *not*.
|
|
$filterQuery = "({$filter}({$filterQuery}))";
|
|
|
|
Log::debug('Filter query: '.$filterQuery);
|
|
|
|
if (! $ldapbind = @ldap_bind($connection, $userDn, $password)) {
|
|
Log::debug("Status of binding user: $userDn to directory: (directly!) ".($ldapbind ? "success" : "FAILURE"));
|
|
if (! $ldapbind = self::bindAdminToLdap($connection)) {
|
|
/*
|
|
* TODO PLEASE:
|
|
*
|
|
* this isn't very clear, so it's important to note: the $ldapbind value is never correctly returned - we never 'return true' from self::bindAdminToLdap() (the function
|
|
* just "falls off the end" without ever explictly returning 'true')
|
|
*
|
|
* but it *does* have an interesting side-effect of checking for the LDAP password being incorrectly encrypted with the wrong APP_KEY, so I'm leaving it in for now.
|
|
*
|
|
* If it *did* correctly return 'true' on a succesful bind, it would _probably_ allow users to log in with an incorrect password. Which would be horrible!
|
|
*
|
|
* Let's definitely fix this at the next refactor!!!!
|
|
*
|
|
*/
|
|
Log::debug("Status of binding Admin user: $userDn to directory instead: ".($ldapbind ? "success" : "FAILURE"));
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (! $results = ldap_search($connection, $baseDn, $filterQuery)) {
|
|
throw new Exception('Could not search LDAP: ');
|
|
}
|
|
|
|
if (! $entry = ldap_first_entry($connection, $results)) {
|
|
return false;
|
|
}
|
|
|
|
if (! $user = ldap_get_attributes($connection, $entry)) {
|
|
return false;
|
|
}
|
|
|
|
return array_change_key_case($user);
|
|
}
|
|
|
|
/**
|
|
* Binds/authenticates an admin to LDAP for LDAP searching/syncing.
|
|
* Here we also return a better error if the app key is donked.
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
* @param bool|false $user
|
|
* @return bool true if the username and/or password provided are valid
|
|
* false if the username and/or password provided are invalid
|
|
*/
|
|
public static function bindAdminToLdap($connection)
|
|
{
|
|
$ldap_username = Setting::getSettings()->ldap_uname;
|
|
|
|
if ( $ldap_username ) {
|
|
// Lets return some nicer messages for users who donked their app key, and disable LDAP
|
|
try {
|
|
$ldap_pass = Crypt::decrypt(Setting::getSettings()->ldap_pword);
|
|
} catch (Exception $e) {
|
|
throw new Exception('Your app key has changed! Could not decrypt LDAP password using your current app key, so LDAP authentication has been disabled. Login with a local account, update the LDAP password and re-enable it in Admin > Settings.');
|
|
}
|
|
|
|
if (! $ldapbind = @ldap_bind($connection, $ldap_username, $ldap_pass)) {
|
|
throw new Exception('Could not bind to LDAP: '.ldap_error($connection));
|
|
}
|
|
// TODO - this just "falls off the end" but the function states that it should return true or false
|
|
// unfortunately, one of the use cases for this function is wrong and *needs* for that failure mode to fire
|
|
// so I don't want to fix this right now.
|
|
// this method MODIFIES STATE on the passed-in $connection and just returns true or false (or, in this case, undefined)
|
|
// at the next refactor, this should be appropriately modified to be more consistent.
|
|
} else {
|
|
// LDAP should also work with anonymous bind (no dn, no password available)
|
|
if (! $ldapbind = @ldap_bind($connection )) {
|
|
throw new Exception('Could not bind to LDAP: '.ldap_error($connection));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Parse and map LDAP attributes based on settings
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
*
|
|
* @param $ldapatttibutes
|
|
* @return array|bool
|
|
*/
|
|
public static function parseAndMapLdapAttributes($ldapattributes)
|
|
{
|
|
//Get LDAP attribute config
|
|
$ldap_result_username = Setting::getSettings()->ldap_username_field;
|
|
$ldap_result_emp_num = Setting::getSettings()->ldap_emp_num;
|
|
$ldap_result_last_name = Setting::getSettings()->ldap_lname_field;
|
|
$ldap_result_first_name = Setting::getSettings()->ldap_fname_field;
|
|
$ldap_result_email = Setting::getSettings()->ldap_email;
|
|
$ldap_result_phone = Setting::getSettings()->ldap_phone;
|
|
$ldap_result_jobtitle = Setting::getSettings()->ldap_jobtitle;
|
|
$ldap_result_country = Setting::getSettings()->ldap_country;
|
|
$ldap_result_location = Setting::getSettings()->ldap_location;
|
|
$ldap_result_dept = Setting::getSettings()->ldap_dept;
|
|
$ldap_result_manager = Setting::getSettings()->ldap_manager;
|
|
// Get LDAP user data
|
|
$item = [];
|
|
$item['username'] = $ldapattributes[$ldap_result_username][0] ?? '';
|
|
$item['employee_number'] = $ldapattributes[$ldap_result_emp_num][0] ?? '';
|
|
$item['lastname'] = $ldapattributes[$ldap_result_last_name][0] ?? '';
|
|
$item['firstname'] = $ldapattributes[$ldap_result_first_name][0] ?? '';
|
|
$item['email'] = $ldapattributes[$ldap_result_email][0] ?? '';
|
|
$item['telephone'] = $ldapattributes[$ldap_result_phone][0] ?? '';
|
|
$item['jobtitle'] = $ldapattributes[$ldap_result_jobtitle][0] ?? '';
|
|
$item['country'] = $ldapattributes[$ldap_result_country][0] ?? '';
|
|
$item['department'] = $ldapattributes[$ldap_result_dept][0] ?? '';
|
|
$item['manager'] = $ldapattributes[$ldap_result_manager][0] ?? '';
|
|
$item['location'] = $ldapattributes[$ldap_result_location][0] ?? '';
|
|
$item['locale'] = app()->getLocale();
|
|
|
|
return $item;
|
|
}
|
|
|
|
/**
|
|
* Create user from LDAP attributes
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
* @param $ldapatttibutes
|
|
* @return User | bool
|
|
*/
|
|
public static function createUserFromLdap($ldapatttibutes, $password)
|
|
{
|
|
$item = self::parseAndMapLdapAttributes($ldapatttibutes);
|
|
|
|
// Create user from LDAP data
|
|
if (! empty($item['username'])) {
|
|
$user = new User;
|
|
$user->first_name = $item['firstname'];
|
|
$user->last_name = $item['lastname'];
|
|
$user->username = $item['username'];
|
|
$user->email = $item['email'];
|
|
$user->locale = $item['locale'];
|
|
$user->password = $user->noPassword();
|
|
|
|
if (Setting::getSettings()->ldap_pw_sync == '1') {
|
|
$user->password = bcrypt($password);
|
|
}
|
|
|
|
$user->activated = 1;
|
|
$user->ldap_import = 1;
|
|
$user->notes = 'Imported on first login from LDAP';
|
|
|
|
if ($user->save()) {
|
|
return $user;
|
|
} else {
|
|
Log::debug('Could not create user.'.$user->getErrors());
|
|
throw new Exception('Could not create user: '.$user->getErrors());
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Searches LDAP
|
|
*
|
|
* @author [A. Gianotto] [<snipe@snipe.net>]
|
|
* @since [v3.0]
|
|
* @param $base_dn
|
|
* @param $count
|
|
* @param $filter
|
|
* @return array|bool
|
|
*/
|
|
public static function findLdapUsers($base_dn = null, $count = -1, $filter = null)
|
|
{
|
|
$ldapconn = self::connectToLdap();
|
|
self::bindAdminToLdap($ldapconn);
|
|
// Default to global base DN if nothing else is provided.
|
|
if (is_null($base_dn)) {
|
|
$base_dn = Setting::getSettings()->ldap_basedn;
|
|
}
|
|
if($filter === null) {
|
|
$filter = Setting::getSettings()->ldap_filter;
|
|
}
|
|
|
|
// Set up LDAP pagination for very large databases
|
|
$page_size = 500;
|
|
$cookie = '';
|
|
$result_set = [];
|
|
$global_count = 0;
|
|
|
|
// Perform the search
|
|
do {
|
|
|
|
if ($filter != '' && substr($filter, 0, 1) != '(') { // wrap parens around NON-EMPTY filters that DON'T have them, for back-compatibility with AdLdap2-based filters
|
|
$filter = "($filter)";
|
|
} elseif ($filter == '') {
|
|
$filter = '(cn=*)';
|
|
}
|
|
|
|
// HUGE thanks to this article: https://stackoverflow.com/questions/68275972/how-to-get-paged-ldap-queries-in-php-8-and-read-more-than-1000-entries
|
|
// which helped me wrap my head around paged results!
|
|
// if a $count is set and it's smaller than $page_size then use that as the page size
|
|
$ldap_controls = [];
|
|
//if($count == -1) { //count is -1 means we have to employ paging to query the entire directory
|
|
$ldap_controls = [['oid' => LDAP_CONTROL_PAGEDRESULTS, 'iscritical' => false, 'value' => ['size'=> $count == -1||$count>$page_size ? $page_size : $count, 'cookie' => $cookie]]];
|
|
//}
|
|
$search_results = ldap_search($ldapconn, $base_dn, $filter, [], 0, /* $page_size */ -1, -1, LDAP_DEREF_NEVER, $ldap_controls); // TODO - I hate the @, and I hate that we get a full page even if we ask for 10 records. Can we use an ldap_control?
|
|
Log::debug("LDAP search executed successfully.");
|
|
if (! $search_results) {
|
|
return redirect()->route('users.index')->with('error', trans('admin/users/message.error.ldap_could_not_search').ldap_error($ldapconn)); // TODO this is never called in any routed context - only from the Artisan command. So this redirect will never work.
|
|
}
|
|
|
|
$errcode = null;
|
|
$matcheddn = null;
|
|
$errmsg = null;
|
|
$referrals = null;
|
|
$controls = [];
|
|
ldap_parse_result($ldapconn, $search_results, $errcode , $matcheddn , $errmsg , $referrals, $controls);
|
|
if (isset($controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'])) {
|
|
// You need to pass the cookie from the last call to the next one
|
|
$cookie = $controls[LDAP_CONTROL_PAGEDRESULTS]['value']['cookie'];
|
|
Log::debug("okay, at least one more page to go!!!");
|
|
} else {
|
|
Log::debug("okay, we're out of pages - no cookie (or empty cookie) was passed");
|
|
$cookie = '';
|
|
}
|
|
// Empty cookie means last page
|
|
|
|
// Get results from page
|
|
$results = ldap_get_entries($ldapconn, $search_results);
|
|
if (! $results) {
|
|
return redirect()->route('users.index')->with('error', trans('admin/users/message.error.ldap_could_not_get_entries').ldap_error($ldapconn)); // TODO this is never called in any routed context - only from the Artisan command. So this redirect will never work.
|
|
}
|
|
|
|
// Add results to result set
|
|
$global_count += $results['count'];
|
|
$result_set = array_merge($result_set, $results);
|
|
Log::debug("Total count is: $global_count");
|
|
|
|
} while ($cookie !== null && $cookie != '' && ($count == -1 || $global_count < $count)); // some servers don't even have pagination, and some will give you more results than you asked for, so just see if you have enough.
|
|
|
|
// Clean up after search
|
|
$result_set['count'] = $global_count; // TODO: I would've figured you could just count the array instead?
|
|
$results = $result_set;
|
|
|
|
return $results;
|
|
}
|
|
}
|