February 16, 2023

Protected Posts Logout Button Plugin

Automatically adds a logout button to your password protected content.

This plugin simply adds a logout button to the content of any password protected post. Sometimes clients want a password protected page to share information with privileged individuals and the default 10 days for the cookie to expire is too long for their liking. So I wrote a little plugin to do this with AJAX and set the cookie to expire immediately, well actually 10 days in the past.

Works logged in or out as a WordPress user.
Uses the same functionality WordPress uses to set post cookies.
Has a simple settings page to make everything easier.
Allows you to alert user they have logged out.

Installation

Upload pplb_logout_button.zip to the /wp-content/plugins/ directory
Activate the plugin through the ‘Plugins’ menu in WordPress
Customize your settings.
Confirm it is working & you’re done!

Screenshots

Admin Screen for simple settings
Optional alert
Button added to the content

FAQ

The logout button shows up, but nothing happens when clicked, what’s wrong?

Does your theme have <?php wp_head(); ?> and <?php wp_footer(); ?> installed correctly? This plugin uses some javascript that gets embedded automatically in the header or footer, and requires it to work properly.

This button is so ugly?! What can I do?

Well, this button is setup to be no intrusive on your theme, so it adapts to the styles that come with you theme.

That being said, you can style the button as you wish using a css class you define on the settings page, or add your themes button class.

I get more than one button on my page when I am logged in to a protected post, what gives?

Well that logout button gets added to the function the_content() but only when the function in_the_loop() returns true (as of version 1.2).
if your theme is using apply_filters('the_content', $some_str); it is possible it will show up more than once.

Changelog

1.4.6

Fixed vulnerabilities in option saving function, not allowing unescaped user input and checking user role

1.4.5

Tested with WordPress 6.1.1
Added nonce verification for updating options.

1.4.4

Tested with WordPress 5.2.2
Added option for positioning button after content.

1.4.3

Tested with WordPress 5.1.1
Added support for multisite by adding COOKIE_DOMAIN to the logout function. Thanks to @rcreactor, @gahapati, and @gserafini

1.4.2

Tested with WordPress 5.0.3
Added filters pplb_button_text & pplb_button_html for manipulating text and HTML button output.

1.4.1

Added an option for changing the button text
re added the function pplb_logout_button to fix potential PHP errors

1.4.0

Refactored code into a class
Moved the options page to a template
Tested with version 4.4.2

1.3.2.1

Moving javascript to footers
Checking to see if logout cookie option is numeric

1.3.2

Added a optional debug to the send response to the console.log function ( only for debugging use should not be used in production. )
Added a check to see the message is not of type “undefined”
Added an option to the options page for turning on or off debug.
Tested with version 4.0!

1.3.1

Added the ability to change the default WordPress postpass cookie in the admin area.
Cleaned up some logic and php code.

1.3

Added conditional logic to the allow admin to disable the automatic filter.
Added a shortcode to allow users to place the button inside posts and a php function to place it in template files or hook it.

1.2

Added conditional logic to the filter to only add the button inside of the loop.

1.1

Fixed a bug with javascript enqueue that was causing a 404 file not found for logout.js.

1.0

Original Release: uses wp_enqueue_scripts and ajax to logout password protected posts by setting the cookie to expire immediately.