Bug #40611: Call to undefined method t3lib_formprotection_DisabledFormProtection::removeSessionTokenFromRegistry in logout.php - TYPO3 Core - TYPO3 Forge

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Bug #40611

closed

Call to undefined method t3lib_formprotection_DisabledFormProtection::removeSessionTokenFromRegistry in logout.php

Added by Tobias Schaefer over 11 years ago. Updated over 6 years ago.

Status:

Closed

Priority:

Should have

Assignee:

Category:

Backend User Interface

Target version:

7.5

Start date:

2012-09-04

Due date:

% Done:

Estimated time:

TYPO3 Version:

6.2

PHP Version:

5.2

Tags:

Complexity:

easy

Is Regression:

Sprint Focus:

Description

After updating from 4.4.15 to 4.5.19 I always get this error when the BE-session expires and I click on the Logout-button:
Fatal error: Call to undefined method t3lib_formprotection_DisabledFormProtection::removeSessionTokenFromRegistry() in /srv/www/libs/typo3_src-4.5.19/typo3/logout.php on line 73

Related issues 1 (0 open — 1 closed)

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Updated by Francois Suter over 11 years ago

Status changed from New to Accepted
Assignee set to Francois Suter
Target version set to 4.5.20
Complexity set to easy

Hi Tobias,

Looking at the source code, I found that the error is coming from the form protection factory selecting the wrong form protection class, because the session has already expired. Thus instead of getting an instance of "t3lib_formprotection_BackendFormProtection", it returns an instance of "t3lib_formprotection_DisabledFormProtection". Only the latter has method removeSessionTokenFromRegistry().

There are several ways this could be solved:

add method removeSessionTokenFromRegistry() to t3lib_formprotection_Abstract class from which all others inherit, with a dummy implementation.
in logout.php, add a check for the class returned by the factory method and invoke removeSessionTokenFromRegistry() only if the class is "t3lib_formprotection_BackendFormProtection"
cleaner IMO, would be to define some more generic method like "logoutCleanup", which each form protection class could implement to perform its own cleanup, but that's a more important change of API and not appropriate to a bugfix.

I would favor method 1. I'll ask in the Core ML for opinions before making a patch.

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Updated by Ernesto Baschny over 11 years ago

Why not make logout() call this method:

/**
 * Deletes the session token and persists the (empty) token.
 *
 * This function is intended to be called when a user logs on or off.
 *
 * @return void
         */
        public function clean() {
                unset($this->sessionToken);
                $this->persistSessionToken();
        }

which is already defined in the Abstract class, and have the Backendformprotection subclass override this method by also calling (interally) removeSessionTokenFromRegistry.

logout.php calling:

t3lib_formProtection_Factory::get()->removeSessionTokenFromRegistry();

doesn't really look right, because this method is not part of the abstract class (and get() returns a t3lib_formprotection_Abstract after all).

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Updated by Francois Suter over 11 years ago

Thanks for your feedback Ernesto. Your suggestion sounds good. I'll take a look at it tomorrow hopefully.

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Updated by Andreas Kiessling over 11 years ago

Any news on that? Some bot triggers this error constantly on one of my sites running 4.5.22

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Updated by Francois Suter over 11 years ago

Assignee deleted (~~Francois Suter~~)

Sorry, I never had the time to look at that again. I've been fully busy with documentation. I hope someone else can pick up this issue.

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Updated by Gerrit Code Review about 10 years ago

Status changed from Accepted to Under Review

Patch set 1 for branch TYPO3_4-5 of project Packages/TYPO3.CMS has been pushed to the review server.
It is available at https://review.typo3.org/28295

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