Hey everyone,

I had a functioning install of Observium 24.4.13528 (26th April 2024) running 
on Ubuntu 24.04.1 LTS, just using mysql for auth.

I then tried to switch to AD by entering info in the "AD" section of the 
/settings web UI config page. Once I did that, I got the error below when 
trying to log in.

I switched back to mysql login, by manually changing $config['auth_mechanism'] 
= "ad"; to $config['auth_mechanism'] = "mysql"; in config.php, and am able to 
log in again.

Can anyone point me in the direction of what's wrong?




array_keys(): Argument #1 ($array) must be of type array, null given in 
/opt/observium/html/includes/authentication/ad.inc.php:38
#0: (unknown function) called at 
[/opt/observium/html/includes/authentication/ad.inc.php:38]
33: }
34: }
35:
36: // If no access control groups are specified, use the defined level groups 
as access control
37: if (!is_array($config['auth_ad_group'])) {
38: $config['auth_ad_group'] = array_keys($config['auth_ad_groups']);
39: }
40:
41: // Synthesize Base DN from configured domain name, if it is not set
42: if (!isset($config['auth_ad_basedn'])) {
43: if (isset($config['auth_ad_domain'])) {
#1: array_keys called at 
[/opt/observium/html/includes/authentication/ad.inc.php:38]
33: }
34: }
35:
36: // If no access control groups are specified, use the defined level groups 
as access control
37: if (!is_array($config['auth_ad_group'])) {
38: $config['auth_ad_group'] = array_keys($config['auth_ad_groups']);
39: }
40:
41: // Synthesize Base DN from configured domain name, if it is not set
42: if (!isset($config['auth_ad_basedn'])) {
43: if (isset($config['auth_ad_domain'])) {
#2: include_once called at 
[/opt/observium/html/includes/authenticate.inc.php:126]
121: // Always load mysql as backup
122: include_once($config['html_dir'] . 
'/includes/authentication/mysql.inc.php');
123:
124: // Load primary module if not mysql
125: if ($config['auth_mechanism'] !== 'mysql') {
126: include_once($auth_file);
127: }
128:
129: // Include base auth functions calls
130: include_once($config['html_dir'] . 
'/includes/authenticate-functions.inc.php');
131: } else {
#3: include called at [/opt/observium/html/index.php:72]
67: $_SERVER['PATH_INFO'] = $_SERVER['PATH_INFO'] ?? 
($_SERVER['ORIG_PATH_INFO'] ?? '');
68:
69: // Clean global $vars variable, it populated only after correct 
authenticating
70: unset($vars);
71:
72: include($config['html_dir'] . "/includes/authenticate.inc.php");
73:
74: // Default theme set in global or user setting
75: if ($config['web_theme_default'] === 'system' && 
isset($_COOKIE['screen_scheme'])) {
76: $theme = $_COOKIE['screen_scheme'];
77: } else {
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