* Setup/Authentication: added an authentication log and fallback authentication for all backends

api/src/Auth.php

@@ -65,13 +65,13 @@ class Auth
 	 *
 	 * @return string
 	 */
-	public function backendType()
+	public static function backendType()
 	{
 		return Cache::getSession(__CLASS__, 'backend');
 	}
 
 	/**
-	 * Instanciate a backend
+	 * Instantiate a backend
 	 *
 	 * Type will be stored in session, to automatic use the same type eg. for conditional use of SAML.
 	 *
@@ -83,7 +83,7 @@ class Auth
 	{
 		if (is_null($type))
 		{
-			$type = Cache::getSession(__CLASS__, 'backend') ?: null;
+			$type = self::backendType() ?: null;
 		}
 		// do we have a hostname specific auth type set
 		if (is_null($type) && !empty($GLOBALS['egw_info']['server']['auth_type_host']) &&
@@ -93,24 +93,53 @@ class Auth
 		}
 		if (is_null($type)) $type = $GLOBALS['egw_info']['server']['auth_type'];
 
+		$account_storage = $GLOBALS['egw_info']['server']['account_storage'] ?? $type;
+		if (!empty($GLOBALS['egw_info']['server']['auth_fallback']) && $type !== $account_storage)
+		{
+			$backend = new Auth\Fallback($type, $account_storage);
+			self::log("Instantiated Auth\\Fallback('$type', '$account_storage')");
+		}
+		else
+		{
 			$backend_class = __CLASS__.'\\'.ucfirst($type);
 
 			// try old location / name, if not found
-		if (!class_exists($backend_class))
+			if (!class_exists($backend_class) && class_exists('auth_'.$type))
 			{
 				$backend_class = 'auth_'.$type;
 			}
 			$backend = new $backend_class;
+			self::log("Instantiated $backend_class() (for type '$type')");
+		}
 
 		if (!($backend instanceof Auth\Backend))
 		{
 			throw new Exception\AssertionFailed("Auth backend class $backend_class is NO EGroupware\\Api\Auth\\Backend!");
 		}
-		if ($save_in_session) Cache::setSession(__CLASS__, 'backend', $type);
+		if ($save_in_session)
+		{
+			Cache::setSession(__CLASS__, 'backend', $type);
+		}
 
 		return $backend;
 	}
 
+	/**
+	 * Log $message to auth.log, if enabled
+	 *
+	 * @param string $message
+	 * @return void
+	 */
+	public static function log(string $message)
+	{
+		if (!empty($GLOBALS['egw_info']['server']['auth_log']) &&
+			($fp = fopen($GLOBALS['egw_info']['server']['files_dir'].'/auth.log', 'a')))
+		{
+			fwrite($fp, date('Y-m-d H:i:s: ').$message."\n");
+			fclose($fp);
+		}
+	}
+
 	/**
 	 * Attempt a SSO login
 	 *
@@ -318,11 +347,24 @@ class Auth
 	 */
 	function authenticate($username, $passwd, $passwd_type='text')
 	{
-		return Cache::getCache($GLOBALS['egw_info']['server']['install_id'],
+		if (preg_match(Auth\Token::TOKEN_REGEXP, $passwd, $matches))
-			__CLASS__, sha1($username.':'.$passwd.':'.$passwd_type), function($username, $passwd, $passwd_type)
 		{
-			return $this->backend->authenticate($username, $passwd, $passwd_type);
+			$log_passwd = substr($passwd, 0, strlen(Auth\Token::PREFIX)+1+strlen($matches[1]));
+			$log_passwd .= str_repeat('*', strlen($passwd)-strlen($log_passwd));
+		}
+		else
+		{
+			$log_passwd = str_repeat('*', strlen($passwd));
+		}
+		$ret = Cache::getCache($GLOBALS['egw_info']['server']['install_id'],
+			__CLASS__, sha1($username.':'.$passwd.':'.$passwd_type), function($username, $passwd, $passwd_type) use ($log_passwd)
+		{
+			$ret = $this->backend->authenticate($username, $passwd, $passwd_type);
+			self::log(get_class($this->backend)."('$username', '$log_passwd', '$passwd_type') returned ".json_encode($ret));
+			return $ret;
 		}, [$username, $passwd, $passwd_type], self::AUTH_CACHE_TIME);
+		self::log(__METHOD__."('$username', '$log_passwd', '$passwd_type') returned ".json_encode($ret));
+		return $ret;
 	}
 
 	/**
@@ -339,6 +381,7 @@ class Auth
 	{
 		if (($err = self::crackcheck($new_passwd,null,null,null,$account_id)))
 		{
+			self::log(__METHOD__."(..., $account_id) new password rejected by crackcheck: $err");
 			throw new Exception\WrongUserinput($err);
 		}
 		if (($ret = $this->backend->change_password($old_passwd, $new_passwd, $account_id)))
@@ -360,6 +403,7 @@ class Auth
 			Cache::unsetCache($GLOBALS['egw_info']['server']['install_id'],
 				__CLASS__, sha1(Accounts::id2name($account_id).':'.$old_passwd.':text'));
 		}
+		self::log(__METHOD__."(..., $account_id) returned ".json_encode($ret));
 		return $ret;
 	}
 

api/src/Auth/Fallback.php

@@ -66,18 +66,21 @@ class Fallback implements Backend
 			{
 				$backup_currentapp = $GLOBALS['egw_info']['flags']['currentapp'];
 				$GLOBALS['egw_info']['flags']['currentapp'] = 'admin';	// otherwise
-				$this->fallback_backend->change_password('', $passwd, $account_id);
+				$ret = $this->fallback_backend->change_password('', $passwd, $account_id);
+				Api\Auth::log(__METHOD__."('$username', ...) fallback_backend(".get_class($this->fallback_backend).
+					")->change_password('', '".str_repeat('*', strlen($passwd))."', $account_id) returned ".json_encode($ret));
 				$GLOBALS['egw_info']['flags']['currentapp'] = $backup_currentapp;
 				//error_log(__METHOD__."('$username', \$passwd) updated password for #$account_id on fallback ".($ret ? 'successfull' : 'failed!'));
 			}
 			return true;
 		}
-		if ($this->fallback_backend->authenticate($username,$passwd, $passwd_type))
+		if (($ret = $this->fallback_backend->authenticate($username,$passwd, $passwd_type)))
 		{
 			Api\Cache::setInstance(__CLASS__,'backend_used-'.$username,'fallback');
-			return true;
 		}
-		return false;
+		Api\Auth::log(__METHOD__."('$username', ...) fallback_backend(".get_class($this->fallback_backend).
+			")->authenticate('$username', '".str_repeat('*', strlen($passwd))."', ...) returned ".json_encode($ret));
+		return $ret;
 	}
 
 	/**
@@ -107,12 +110,16 @@ class Fallback implements Backend
 			if (($ret = $this->primary_backend->change_password($old_passwd, $new_passwd, $account_id)))
 			{
 				// if password successfully changed on primary, also update fallback
-				$this->fallback_backend->change_password($old_passwd, $new_passwd, $account_id);
+				$change_pwd = $this->fallback_backend->change_password($old_passwd, $new_passwd, $account_id);
+				Api\Auth::log(__METHOD__."(..., $account_id) fallback_backend(".get_class($this->fallback_backend).
+					")->change_password('', '".str_repeat('*', strlen($new_passwd))."', $account_id) returned ".json_encode($change_pwd));
 			}
 		}
 		else
 		{
 			$ret = $this->fallback_backend->change_password($old_passwd, $new_passwd, $account_id);
+			Api\Auth::log(__METHOD__."(..., $account_id) fallback_backend(".get_class($this->fallback_backend).
+				")->change_password('', '".str_repeat('*', strlen($new_passwd))."', $account_id) returned ".json_encode($ret));
 		}
 		//error_log(__METHOD__."('$old_passwd', '$new_passwd', $account_id) username='$username', backend=".Api\Cache::getInstance(__CLASS__,'backend_used-'.$username)." returning ".array2string($ret));
 		return $ret;

api/src/Auth/Token.php

@@ -51,6 +51,8 @@ class Token extends APi\Storage\Base
 			return null;    // not a token
 		}
 		try {
+			$log_passwd = substr($token, 0, strlen(Auth\Token::PREFIX)+1+strlen($matches[1]));
+			$log_passwd .= str_repeat('*', strlen($token)-strlen($log_passwd));
 			$data = self::getInstance()->read([
 				'token_id' => $matches[1],
 				'account_id' => [0, Api\Accounts::getInstance()->name2id($user)],
@@ -59,12 +61,15 @@ class Token extends APi\Storage\Base
 			]);
 			if (!password_verify($matches[2], $data['token_hash']))
 			{
+				Api\Auth::log(__METHOD__."('$user', '$log_passwd', ...') returned false (no active token found)");
 				return false;   // invalid token password
 			}
 			$limits = $data['token_limits'];
+			Api\Auth::log(__METHOD__."('$user', '$log_passwd', ...) returned true");
 			return true;
 		}
 		catch (Api\Exception\NotFound $e) {
+			Api\Auth::log(__METHOD__."('$user', '$log_passwd, ...) returned false: ".$e->getMessage());
 			return false;   // token not found
 		}
 	}

setup/config.php

@@ -104,28 +104,29 @@ if(@$_POST['submit'] && @$newsettings)
 
 $GLOBALS['egw_setup']->html->show_header(lang('Configuration'),False,'config',$GLOBALS['egw_setup']->ConfigDomain . '(' . $GLOBALS['egw_domain'][$GLOBALS['egw_setup']->ConfigDomain]['db_type'] . ')');
 
+$current_config = [];
 // if we have an validation error, use the new settings made by the user and not the stored config
 if($GLOBALS['error'] && is_array($newsettings))
 {
-	$GLOBALS['current_config'] = $newsettings;
+	$current_config = $newsettings;
 }
 else
 {
 	foreach($GLOBALS['egw_setup']->db->select($GLOBALS['egw_setup']->config_table,'*',false,__LINE__,__FILE__) as $row)
 	{
-		$GLOBALS['current_config'][$row['config_name']] = $row['config_value'];
+		$current_config[$row['config_name']] = $row['config_value'];
 	}
 }
 $setup_tpl->pparse('out','T_config_pre_script');
 
 /* Now parse each of the templates we want to show here */
-class phpgw
+class egw
 {
 	var $accounts;
 	var $applications;
 	var $db;
 }
-$GLOBALS['egw'] = new phpgw;
+$GLOBALS['egw'] = new egw;
 $GLOBALS['egw']->db     =& $GLOBALS['egw_setup']->db;
 
 $t = new Framework\Template(Framework\Template::get_dir('setup'));
@@ -157,17 +158,18 @@ foreach($vars as $value)
 			}
 			else
 			{
-				$t->set_var($value,@$current_config[$newval]);
+				$t->set_var($value, $current_config[$newval]);
 			}
 			break;
 		case 'selected':
+		case 'checked':
 			$newvals = explode(' ',$newval);
 			$setting = array_pop($newvals);
 			$config = implode('_',$newvals);
 			/* echo $config . '=' . $current_config[$config]; */
-			if(@$current_config[$config] == $setting)
+			if($current_config[$config] == $setting)
 			{
-				$t->set_var($value,' selected');
+				$t->set_var($value,' '.$type);
 			}
 			else
 			{

setup/lang/egw_de.lang

@@ -15,8 +15,8 @@
 %1 not allowed to create in univention.	setup	de	Es ist nicht erlaubt unter Univention %1 anzulegen.
 %1 password set in %2.	setup	de	%1 Passwort gesetzt in %2.
 %1 passwords updated, %3 errors	setup	de	%1 Passwörter aktualisiert, %3 Fehler
-%1 users and %2 groups created, %3 errors	setup	de	%1 Benutzer und %2 Gruppen angelegt, %3 Fehler
 %1 the configuration file.	setup	de	%1 der Konfigurationsdatei.
+%1 users and %2 groups created, %3 errors	setup	de	%1 Benutzer und %2 Gruppen angelegt, %3 Fehler
 '%1' is no valid domain name!	setup	de	'%1' ist kein gültiger Domainname!
 '%1' is not allowed as %2. arguments of option %3 !!!	setup	de	'%1' ist nicht erlaubt als %2. Parameter für die Option %3 !!!
 '%1' must be integer	setup	de	%1 muß ein Integer-Wert sein.
@@ -291,6 +291,7 @@ email (standard maildomain should be set)	setup	de	email (Standard Maildomaine m
 email-address	setup	de	EMail Adresse
 emailadmin profile updated:	setup	de	EMailAdmin Profil aktualisiert:
 enable for extra debug-messages	setup	de	ankreuzen für zusätzliche Diagnosemeldungen
+enable logging of authentication to files-directory	setup	de	Aktiviere Logging der Authentifizierung in das Datei Verzeichnis
 enable mcrypt	setup	de	MCrypt einschalten
 enforce ssl (allows to specify just a path above)	setup	de	Erzwinge SSL (erlaubt darüber nur einen Pfad anzugeben)
 enter some random text for app session encryption	setup	de	Zufallstext zur Verschlüsselung der Anwendungssitzung
@@ -322,6 +323,7 @@ export has been completed!	setup	de	Export ist abgeschlossen!
 failed to mount backup directory!	setup	de	Konnte Datensicherungsverzeichnis nicht mounten!
 failed updating user "%1" dn="%2"!	setup	de	Konnte Benutzer "%1" dn="%2" nicht aktualisieren!
 failed writing configuration file header.inc.php, check the permissions !!!	setup	de	Fehler beim Schreiben der Konfigurationsdatei header.inc.php, bitte überprüfen Sie die Zugriffsrechte !!!
+fallback authentication	setup	de	Rückfall Authentifizierung
 false	setup	de	Falsch
 file	setup	de	DATEI
 file type, size, version, etc.	setup	de	Dateityp, Größe, Version usw.
@@ -367,6 +369,7 @@ however, the application may still work	setup	de	Wie auch immer, die Anwendung m
 http auth types (comma-separated) to use without login-page, eg. "ntlm"	setup	de	HTTP Authetifizierungs Typen (Komma-getrennt) die ohne Login Seite benutzt werden sollen, zB. "NTLM"
 identity provider	setup	de	Identitätsprovider
 if no acl records for user or any group the user is a member of	setup	de	Wenn es keinen ACL-Eintrag für einen Benutzer oder eine Gruppe, der er angehört gibt
+if primary authentication is not successful fall back to passwords synced into account-storage	setup	de	Wenn die primäre Authentifizierung NICHT erfolgreich ist, falle auf die synchronisierten Passwörter des Benutzer Storage zurück
 if safe_mode is turned on, egw is not able to change certain settings on runtime, nor can we load any not yet loaded module.	setup	de	Wenn safe_mode eingeschaltet ist, kann EGw verschiedene Einstellungen nicht mehr zur Laufzeit ändern, noch können wir nicht geladene Erweiterungen (php extensions) laden.
 if the application has no defined tables, selecting upgrade should remedy the problem	setup	de	Wenn die Anwendung keine definierten Tabellen hat, wählen Sie überarbeiten. Das Problem sollte damit behoben werden.
 if using ads (active directory)	setup	de	Wenn Sie ADS (Active Directory) benutzen

setup/lang/egw_en.lang

@@ -15,8 +15,8 @@
 %1 not allowed to create in univention.	setup	en	%1 not allowed to create in Univention.
 %1 password set in %2.	setup	en	%1 password set in %2.
 %1 passwords updated, %3 errors	setup	en	%1 passwords updated, %3 errors
-%1 users and %2 groups created, %3 errors	setup	en	%1 users and %2 groups created, %3 errors.
 %1 the configuration file.	setup	en	%1 the configuration file.
+%1 users and %2 groups created, %3 errors	setup	en	%1 users and %2 groups created, %3 errors.
 '%1' is no valid domain name!	setup	en	'%1' is no valid domain name!
 '%1' is not allowed as %2. arguments of option %3 !!!	setup	en	'%1' is not allowed as %2. arguments of option %3 !!!
 '%1' must be integer	setup	en	%1 must be an integer value.
@@ -293,6 +293,7 @@ email-address	setup	en	EMail-address
 emailadmin mail account saved:	setup	en	EMailAdmin mail account saved:
 emailadmin profile updated:	setup	en	eMailAdmin profile updated:
 enable for extra debug-messages	setup	en	Enable for extra debug messages
+enable logging of authentication to files-directory	setup	en	Enable logging of authentication to files-directory
 enable mcrypt	setup	en	Enable MCrypt
 enforce ssl (allows to specify just a path above)	setup	en	Enforce SSL (allows to specify just a path above)
 enter some random text for app session encryption	setup	en	Enter some random text for app session encryption
@@ -324,6 +325,7 @@ export has been completed!	setup	en	Export has been completed!
 failed to mount backup directory!	setup	en	Failed to mount Backup directory!
 failed updating user "%1" dn="%2"!	setup	en	Failed updating user "%1" dn="%2"!
 failed writing configuration file header.inc.php, check the permissions !!!	setup	en	Failed writing configuration file header.inc.php, check the permissions!
+fallback authentication	setup	en	Fallback Authentication
 false	setup	en	False
 file	setup	en	FILE
 file type, size, version, etc.	setup	en	File type, size, version, etc.
@@ -370,6 +372,7 @@ however, the application may still work	setup	en	The application may still work
 http auth types (comma-separated) to use without login-page, eg. "ntlm"	setup	en	HTTP auth types, comma-separated to use without login page, eg. "NTLM"
 identity provider	setup	en	Identity Provider
 if no acl records for user or any group the user is a member of	setup	en	If no ACL records for user or any group the user is a member of
+if primary authentication is not successful fall back to passwords synced into account-storage	setup	en	If primary authentication is NOT successful fall back to passwords synced into account-storage
 if safe_mode is turned on, egw is not able to change certain settings on runtime, nor can we load any not yet loaded module.	setup	en	If safe_mode is turned on, EGw is not able to change certain settings on runtime, nor can we load any not yet loaded module.
 if the application has no defined tables, selecting upgrade should remedy the problem	setup	en	If the application has no defined tables, selecting upgrade should remedy the problem
 if using ads (active directory)	setup	en	If using ADS (Active Directory) authentication

setup/templates/default/config.tpl

@@ -129,6 +129,8 @@
      <select name="newsettings[auth_type]">
 {hook_auth_types}
      </select>
+     <label><input type="checkbox" value="True" {checked_auth_log_True} name="newsettings[auth_log]"/>
+{lang_Enable_logging_of_authentication_to_files-directory}: auth.log</label>
     </td>
    </tr>
 
@@ -173,6 +175,13 @@
    </tr>
 
   <tr class="row_off">
+    <td>{lang_Fallback_Authentication}:</td>
+    <td>
+      <label><input type="checkbox" value="True" {checked_auth_fallback_True} name="newsettings[auth_fallback]"/>
+{lang_If_primary_authentication_is_NOT_successful_fall_back_to_passwords_synced_into_account-storage}</label>
+    </td>
+   </tr>
+   <tr class="row_on">
     <td>{lang_Select_where_you_want_to_store/retrieve_user_accounts}:</td>
     <td>
      <select name="newsettings[account_repository]">
@@ -181,14 +190,14 @@
     </td>
    </tr>
 
-   <tr class="row_on">
+   <tr class="row_off">
     <td>{lang_sql_encryption_type}:</td>
     <td>
      <select name="newsettings[sql_encryption_type]">{hook_sql_passwdhashes}</select>
     </td>
    </tr>
 
-   <tr class="row_off">
+   <tr class="row_on">
     <td>{lang_Allow_password_migration}:</td>
     <td>
       <select name="newsettings[pwd_migration_allowed]">
@@ -198,7 +207,7 @@
     </td>
    </tr>
 
-   <tr class="row_on">
+   <tr class="row_off">
     <td>{lang_Allowed_migration_types_(comma-separated)}:</td>
     <td>
       <input name="newsettings[pwd_migration_types]" value="{value_pwd_migration_types}" size="20" />