JezK

Edit File: functions-license.php

<?php

namespace PixelYourSite;

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly.
}

/**
 * @param Plugin|Settings $plugin
 */
function renderLicenseControls( $plugin, $license_status ) {

$slug = $plugin->getSlug();
    $input_name = "pys[{$slug}][license_action]";

<div class="d-flex align-items-center">
        <?php $plugin->render_password_input( 'license_key', 'Enter your license key', false, false, false ); ?>
        <?php if( $license_status == 'valid' ||  $license_status == 'expired') : ?>
            <button class="btn btn-block btn-sm btn-success" name="<?php echo esc_attr( $input_name ); ?>"
                    value="reactivate">Reactivate License</button>
        <?php else: ?>
            <button class="btn btn-block btn-sm btn-primary" name="<?php echo esc_attr( $input_name ); ?>"
                    value="activate">Activate License</button>
        <?php endif; ?>
    </div>

<?php

$license_key = $plugin->getOption( 'license_key' );
    $license_expires = $plugin->getOption( 'license_expires', null );
    $license_expires_soon = false;
    $license_expired = false;

if( $license_expires ) {

$now = time();

if( $now >= $license_expires ) {
			$license_expired = true;
		} elseif ( $now >= ( $license_expires - 30 * DAY_IN_SECONDS ) ) {
			$license_expires_soon = true;
		}

}

if ( $notice = get_transient( "pys_{$slug}_license_notice" ) ) :
		?>
            <div class="alert alert-<?php echo esc_attr( $notice['class'] ); ?>" role="alert">
                <?php echo $notice['msg']; ?>
            </div>
		<?php

delete_transient(  "pys_{$slug}_license_notice" );

endif;

if ( $notice = get_transient( "pys_{$slug}_license_notice_403" ) ) :
		?>
            <div class="alert alert-<?php echo esc_attr( $notice['class'] ); ?>" role="alert">
                <?php echo $notice['msg']; ?>
            </div>
		<?php

delete_transient(  "pys_{$slug}_license_notice_403" );

endif;

if ( $license_expires_soon ) :
		?>
            <div class="alert alert-warning">
                <p>Your license key <strong>expires
                        on <?php echo date( get_option( 'date_format' ), $license_expires ); ?></strong>. Make sure
                    you keep everything updated and in order.</p>
                <p>If you renewed your license but you still see this message, click on the "Reactivate License" button.</p>
                <p><a href="https://www.pixelyoursite.com/checkout/?edd_license_key=<?php echo esc_attr(
                    $license_key ); ?>&utm_campaign=admin&utm_source=licenses&utm_medium=renew" target="_blank"><strong>Click here to renew your license</strong></a></p>
            </div>
		<?php
	endif;

if ( $license_expired ) :
		?>
            <div class="alert alert-danger">
                <p><strong>Your license key is expired</strong>, so you no longer get any updates. Don't miss our
                    latest improvements and make sure that everything works smoothly.</p>
                <p>If you renewed your license but you still see this message, click on the "Reactivate License" button.</p>
                <p><a href="https://www.pixelyoursite.com/checkout/?edd_license_key=<?php echo esc_attr(
                    $license_key ); ?>&utm_campaign=admin&utm_source=licenses&utm_medium=renew" target="_blank"><strong>Click here to renew your license now</strong></a></p>
            </div>
		<?php
	endif;

}

function checkLicense()
{
    $plugins = PYS()->getRegisteredPlugins();
    if((!get_option(PYS()->getSlug().'_last_check_license') || get_option(PYS()->getSlug().'_last_check_license')['time'] == '' || get_option(PYS()->getSlug().'_last_check_license')['time'] < time()) && PYS()->getOption('license_key') && !empty(PYS()->getOption('license_key')))
    {
        $license_data = singleCheckLicense(PYS()->getOption('license_key'), PYS());
        if(!empty($license_data)) {
            set_data_license(PYS(), $license_data);
        }
    }

foreach ($plugins as $plugin)
    {
        if ( $plugin->getSlug() == 'head_footer' ) { continue; }
        if((!get_option($plugin->getSlug().'_last_check_license') || get_option($plugin->getSlug().'_last_check_license')['time'] == '' || get_option($plugin->getSlug().'_last_check_license')['time'] < time()) && $plugin->getOption('license_key') && !empty($plugin->getOption('license_key')))
        {
            $license_data_single = singleCheckLicense($plugin->getOption('license_key'), $plugin);
            if(!empty($license_data_single)) {
                set_data_license($plugin, $license_data_single);
            }
        }
    }

}
function set_data_license($plugin, $license_data)
{
    $license_status = $plugin->getOption( 'license_status' );
    $license_expires = $plugin->getOption( 'license_expires' );
    $license_key = $plugin->getOption( 'license_key' );
    $slug = $plugin->getSlug();
    $admin_notice = array();
    if ( is_wp_error( $license_data ) ) {

$admin_notice = array(
            'class' => 'danger',
            'msg'   => 'Something went wrong during license update request. [' . $license_data->get_error_message() . ']'
        );

} else {

/**
         * Overwrite empty license status only on successful activation.
         * For existing status overwrite with any value except error.
         */
        if ( empty( $license_status ) && $license_data->license == 'valid' ) {
            $license_status = 'valid';
        } elseif ( ! empty( $license_status ) ) {
            $license_status = $license_data->license;
        }

if ( $license_data->success ) {

switch ( $license_data->license ) {
                case
                'valid':
                    $admin_notice = array(
                        'class' => 'success',
                        'msg'   => 'Your license is working fine. Good job!'
                    );
                    break;

case 'deactivated':
                    $admin_notice = array(
                        'class' => 'success',
                        'msg'   => 'Your license was successfully deactivated for this site.'
                    );
                    break;
                case 'expired':                 // license has expired
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'Your License has expired. <a href="http://www.pixelyoursite.com/checkout/?edd_license_key=' . urlencode( $license_key ) . '&utm_campaign=admin&utm_source=licenses&utm_medium=renew" target="_blank">Renew it now.</a>'
                    );
                    break;

case 'inactive':                // license is not active
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'This license is not active. Activate it now.'
                    );
                    break;

case 'disabled':                // license key disabled
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'License key disabled.'
                    );
                    break;

case 'license_not_activable':   // trying to activate bundle license
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'If you have a bundle package, please use each individual license for your products.'
                    );
                    break;

case 'revoked':                 // license key revoked
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'This license was revoked.'
                    );
                    break;
            }

$license_expires = $license_data->expires === 'lifetime' ? strtotime('2099-12-31 23:59:59') : strtotime($license_data->expires);;

} else {

switch ( $license_data->license ) {
                case 'invalid':                 // key do not exist
                case 'missing':
                case 'key_mismatch':
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => "License keys don't match. Make sure you're using the correct license."
                    );
                    break;

case 'revoked':                 // license key revoked
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'This license was revoked.'
                    );
                    break;

case 'no_activations_left':     // no activations left
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'No activations left. Log in to your account to extent your license.'
                    );
                    break;

case 'invalid_item_id':
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'Invalid item ID.'
                    );
                    break;

case 'item_name_mismatch':      // item names don't match
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => "Item names don't match."
                    );
                    break;

case 'site_inactive':
                    $admin_notice = array(
                        'class' => 'danger',
                        'msg'   => 'The license is not active for this site. Activate it now.'
                    );
                    break;

}

// add error code
            $admin_notice['msg'] .= " [error: $license_data->license]";

}

if ( ! empty( $admin_notice ) ) {
        set_transient( "pys_{$slug}_license_notice", $admin_notice, 60 * 5 );
    }

$plugin->updateOptions(
        array (
            'license_key'     => $license_key,
            'license_status'  => $license_status,
            'license_expires' => $license_expires
        )
    );
}
function singleCheckLicense( $license_key, $plugin)
{
    update_option($plugin->getSlug().'_last_check_license', array('name'=>$plugin->getPluginName(), 'time'=>time()));
    $api_params = array(
        'edd_action' => 'check_license',
        'license'    => $license_key,
        'item_name'  => urlencode( $plugin->getPluginName() ),
        'url'        => home_url()
    );

$response = wp_remote_post( 'https://www.pixelyoursite.com', array(
        'timeout'   => 30,
        'sslverify' => false,
        'body'      => $api_params
    ) );

if ( is_wp_error( $response ) ) {
        return $response;
    }
	$status_code = wp_remote_retrieve_response_code($response);
    if($status_code == 403 || $status_code == 415) {
        $ip_list = get_all_server_ips();

$admin_notice = array(
            'class' => 'danger',
            'msg'   => __("The request may have been blocked by our firewall. Please try again later. If the problem persists, contact our support and provide the following IP addresses: {$ip_list}", 'pixelyoursite')
        );

if ( ! empty( $admin_notice ) ) {
		    set_transient( "pys_{$plugin->getSlug()}_license_notice_403", $admin_notice, 60 * 5 );
	    }
    }

// $license_data->license will be either "valid" or "invalid"
    return json_decode( wp_remote_retrieve_body( $response ) );
}

/**
 * @param Plugin|Settings $plugin
 */
function updateLicense( $plugin ) {

$slug = $plugin->getSlug();
    $license_key_old = $plugin->getOption( 'license_key' );
	// nothing to do...
	if( ! isset( $_POST['pys'][ $slug ]['license_action'] ) ) {
		return;
	}
    $last_check_license = time();
	$license_action = $_POST['pys'][ $slug ]['license_action'];
	if(isset( $_POST['pys'][ $slug ]['license_key'] )) {
        $license_key    =  sanitize_text_field($_POST['pys'][ $slug ]['license_key']);
    } else {
        $license_key    =   '';
    }

// activate/deactivate license
	if ( $license_action == 'activate' ) {
		$license_data = licenseActivate( $license_key, $plugin );
	} else if ( $license_action == 'reactivate' ) {
        if($license_key_old)
        {
            $license_key = $license_key_old;
        }
        $license_data = licenseActivate($license_key, $plugin);
    }
    else {
        if($license_key_old)
        {
            $license_key = $license_key_old;
        }
		$license_data = licenseDeactivate( $license_key, $plugin );
	}
    if(!empty($license_data)) {
        update_option($plugin->getSlug() . '_last_check_license', array('name' => $plugin->getPluginName(), 'time' => $last_check_license));
        $license_status = $plugin->getOption('license_status');
        $license_expires = $plugin->getOption('license_expires');

$admin_notice = array();

if (is_wp_error($license_data)) {

$admin_notice = array(
                'class' => 'danger',
                'msg' => 'Something went wrong during license update request. [' . $license_data->get_error_message() . ']'
            );

} else {

/**
             * Overwrite empty license status only on successful activation.
             * For existing status overwrite with any value except error.
             */
            if (empty($license_status) && $license_data->license == 'valid') {
                $license_status = 'valid';
            } elseif (!empty($license_status)) {
                $license_status = $license_data->license;
            }

if ($license_data->success) {

switch ($license_data->license) {
                    case
                    'valid':
                        $admin_notice = array(
                            'class' => 'success',
                            'msg' => 'Your license is working fine. Good job!'
                        );
                        break;

case 'deactivated':
                        $admin_notice = array(
                            'class' => 'success',
                            'msg' => 'Your license was successfully deactivated for this site.'
                        );
                        break;
                }

$license_expires = $license_data->expires === 'lifetime' ? strtotime('2099-12-31 23:59:59') : strtotime($license_data->expires);;

} else {

switch ($license_data->license) {
                    case 'invalid':                 // key do not exist
                    case 'missing':
                    case 'key_mismatch':
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => "License keys don't match. Make sure you're using the correct license."
                        );
                        break;

case 'license_not_activable':   // trying to activate bundle license
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'If you have a bundle package, please use each individual license for your products.'
                        );
                        break;

case 'revoked':                 // license key revoked
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'This license was revoked.'
                        );
                        break;

case 'no_activations_left':     // no activations left
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'No activations left. Log in to your account to extent your license.'
                        );
                        break;

case 'invalid_item_id':
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'Invalid item ID.'
                        );
                        break;

case 'item_name_mismatch':      // item names don't match
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => "Item names don't match."
                        );
                        break;

case 'expired':                 // license has expired
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'Your License has expired. <a href="http://www.pixelyoursite.com/checkout/?edd_license_key=' . urlencode($license_key) . '&utm_campaign=admin&utm_source=licenses&utm_medium=renew" target="_blank">Renew it now.</a>'
                        );
                        break;

case 'inactive':                // license is not active
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'This license is not active. Activate it now.'
                        );
                        break;

case 'disabled':                // license key disabled
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'License key disabled.'
                        );
                        break;

case 'site_inactive':
                        $admin_notice = array(
                            'class' => 'danger',
                            'msg' => 'The license is not active for this site. Activate it now.'
                        );
                        break;

}

// add error code
                $admin_notice['msg'] .= " [error: $license_data->license]";

}

if (!empty($admin_notice)) {
            set_transient("pys_{$slug}_license_notice", $admin_notice, 60 * 5);
        }

$plugin->updateOptions(
            array(
                'license_key' => $license_key,
                'license_status' => $license_status,
                'license_expires' => $license_expires
            )
        );
    }

}

/**
 * @param string          $license_key
 * @param Plugin|Settings $plugin
 *
 * @return array|mixed|object|\WP_Error
 */
function licenseActivate( $license_key, $plugin ) {

$api_params = array(
		'edd_action' => 'activate_license',
		'license'    => $license_key,
		'item_name'  => urlencode( $plugin->getPluginName() ),
		'url'        => home_url()
	);

$response = wp_remote_post( 'https://www.pixelyoursite.com', array(
		'timeout'   => 120,
		'sslverify' => false,
		'body'      => $api_params
	) );

if ( is_wp_error( $response ) ) {
		return $response;
	}

$status_code = wp_remote_retrieve_response_code($response);
	if($status_code == 403 || $status_code == 415) {
        $ip_list = get_all_server_ips();

if ( ! empty( $admin_notice ) ) {
			set_transient( "pys_{$plugin->getSlug()}_license_notice_403", $admin_notice, 60 * 5 );
		}
	}
	// $license_data->license will be either "valid" or "invalid"
	return json_decode( wp_remote_retrieve_body( $response ) );

}

/**
 * @param string          $license_key
 * @param Plugin|Settings $plugin
 *
 * @return array|mixed|object|\WP_Error
 */
function licenseDeactivate( $license_key, $plugin ) {

$api_params = array(
		'edd_action' => 'deactivate_license',
		'license'    => $license_key,
		'item_name'  => urlencode( $plugin->getPluginName() ),
		'url'        => home_url()
	);

$response = wp_remote_post( 'https://www.pixelyoursite.com', array(
		'timeout'   => 120,
		'sslverify' => false,
		'body'      => $api_params
	) );

if ( is_wp_error( $response ) ) {
		return $response;
	}
	$status_code = wp_remote_retrieve_response_code($response);
	if($status_code == 403 || $status_code == 415) {
        $ip_list = get_all_server_ips();

if ( ! empty( $admin_notice ) ) {
			set_transient( "pys_{$plugin->getSlug()}_license_notice_403", $admin_notice, 60 * 5 );
		}
	}
	// $license_data->license will be either "deactivated" or "failed"
	return json_decode( wp_remote_retrieve_body( $response ) );

}

function get_all_server_ips(): string {
    $ips = [];

// 1. Get external/public IP using an external service
    $external_ip = @file_get_contents('https://api64.ipify.org?format=json');
    if ($external_ip) {
        $decoded = json_decode($external_ip, true);
        if (!empty($decoded['ip'])) {
            $ips[] = $decoded['ip'];
        }
    }

// 2. Get IP from the server's hostname
    $hostname = gethostname();
    if ($hostname) {
        $hostname_ip = gethostbyname($hostname);
        if (filter_var($hostname_ip, FILTER_VALIDATE_IP)) {
            $ips[] = $hostname_ip;
        }

// 3. Get all IPs associated with the hostname
        $multiple_ips = gethostbynamel($hostname);
        if (is_array($multiple_ips)) {
            foreach ($multiple_ips as $ip) {
                if (filter_var($ip, FILTER_VALIDATE_IP)) {
                    $ips[] = $ip;
                }
            }
        }
    }

// 4. Get IP resolved from the server name (e.g., domain)
    if (!empty($_SERVER['SERVER_NAME'])) {
        $server_name_ip = gethostbyname($_SERVER['SERVER_NAME']);
        if (filter_var($server_name_ip, FILTER_VALIDATE_IP)) {
            $ips[] = $server_name_ip;
        }
    }

// 5. Get the IP address of the interface the server is running on
    if (!empty($_SERVER['SERVER_ADDR']) && filter_var($_SERVER['SERVER_ADDR'], FILTER_VALIDATE_IP)) {
        $ips[] = $_SERVER['SERVER_ADDR'];
    }

// Remove duplicates and return as a comma-separated string
    $unique_ips = array_unique($ips);
    return implode(', ', $unique_ips);
}