How to send additional information from server to plugin checker

[ZdenekWPlama]

Hi,

I'm writing about plugin update checker (https://github.com/YahnisElsts/plugin-update-checker)

Its perfect solution for my purpose but I stuck on this problem:

I need to get variable (loaded on WP Update Server) from server to wordpress plugins page. With this variable I need to check licence (if exist/ if valid / if expired). On check I use script from this article https://w-shadow.com/blog/2013/03/19/plugin-updates-securing-download-links/

Can you please advice me how to create such variable and how to send it to plugins page?

Thank you very much, Zdenek

[YahnisElsts]

On the plugin side, you could use the puc_request_info_result-$slug filter to process the data received from the server and store your custom variable somewhere. Here's a simplified version of the code I use in one of my paid plugins:

class LicenseManager {
    function __construct() {
        //Let's assume that $updateChecker is created or passed in somehow.
        //PUC has a utility function addFilter() that will automatically add the "puc_" prefix
        //and the necessary "-$slug" suffix to the filter name.
        $updateChecker->addFilter(
            'request_info_result', 
            array($this, 'refreshLicenseFromPluginInfo'), 
            10, 
            2
        );
    }

    //...

    /**
     * @param Puc_v4p8_Plugin_Info|null $pluginInfo
     * @param array $result The response returned by wp_remote_get()
     * @return Puc_v4p8_Plugin_Info|null
     */    
    public function refreshLicenseFromPluginInfo($pluginInfo, $result) {
        //Verify that this is an OK response.
        if ( !is_wp_error($result) 
            && isset($result['response']['code']) 
            && ($result['response']['code'] == 200) 
            && !empty($result['body']) 
        ) {
            $apiResponse = json_decode($result['body']);
            if ( is_object($apiResponse) && isset($apiResponse->customVariable) ) {
                //Save the custom data.
                $this->licenseDetails = $this->createLicenseObject($apiResponse->customVariable);
                $this->saveLicense();
            }
        }
        //Return the plugin metadata unmodified.
        return $pluginInfo;
    }
}

[ZdenekWPlama]

Thank you for your advice, it was very helpful.