Let us learn how to generate a whitelist Magento 2 with the support of our Magento support services at Bobcares.

Why generate whitelist Magento 2?

The word “whitelist” in Magento 2 refers to a security mechanism that permits the execution of particular PHP functions and methods inside the framework of the application.

However, we can create a whitelist that specifies the permissible functions and methods, allowing them to execute within the Magento 2 application.

How to generate a whitelist in Magento 2?

We can create a whitelist in Magento 2 by following these steps:

• Locate the whitelist.php file:

  Firstly, navigate to the app/etc/ directory in the Magento 2 installation. The whitelist.php.dist file should be found here.
• Rename the file:

  After that, make a duplicate of whitelist.php.dist and rename it whitelist.php. This ensures that the whitelist setup is recognized by Magento 2.
• Open the whitelist.php file:

  Open the whitelist.php file with a text editor. We’ll discover an array structure within where we may specify the PHP functions and methods we wish to whitelist.
• Add functions and methods to the whitelist:

  The addition of individual PHP functions and methods as strings to the array or the utilization of wildcard patterns enables the inclusion of multiple functions or methods within Magento 2.

  To whitelist the file_get_contents() method, for example, add the following line:

  php
'file_get_contents'

  To whitelist all methods of a certain class, we can use the following syntax.

  php
'My\Namespace\ClassName::'
• Save the whitelist.php file:

  Save the whitelist.php file after adding the appropriate functions and methods to it.
• Clear the Magento cache:

  Finally, run the following command from the Magento root directory to clear the Magento cache and verify that the whitelist modifications take effect:

  bash
bin/magento cache:clean

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Conclusion

To sum up we have now seen how to generate a whitelist in Magento 2 with the support of our tech support team.