We have explain how to integrate automatic update for wordpress plugins and how to create sample license form for activating licensing system now we post here complete code for that tutorial:
<?php
/*
Plugin Name: WPLS Sample Plugin
Plugin URI: http://licenshop.com/
Description: Illustrates how to include an updater in your plugin for WordPress Licensing System
Author: Hassan Noor
Author URI: http://hassan.noor.pw
Version: 1.0
*/
set_site_transient( 'update_plugins', null );
// this is the URL our updater / license checker pings. This should be the URL of the site with WPLS installed
define( 'WPLS_SAMPLE_STORE_URL', 'http://pro.licenshop.com' ); // you should use your own CONSTANT server url, and be sure to replace it throughout this file
// the name of your product. This should match the download name in WPLS exactly
define( 'WPLS_SAMPLE_ITEM_CODE', 'plugin3520' ); // you should use your own CONSTANT CODE, and be sure to replace it throughout this file
/***** WPLS PLUGIN UPDATER START *****/
require ('plugin-updates/plugin-update-checker.php');
// retrieve our license key from the DB
$license = get_option( 'wpls_sample_license_key' ); // get_option('305994sample_license');
$userip = isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'];
$dataSample = array(
'wpls_action' => 'get_version',
'license' => $license == false ? 'getlatestversion' : $license,
'code' => WPLS_SAMPLE_ITEM_CODE,
'url' => $_SERVER['SERVER_NAME'],
'host' => $userip
);
$PSampleUpdateChecker = new PluginUpdateChecker( add_query_arg( $dataSample, WPLS_SAMPLE_STORE_URL), __FILE__ );
/***** WPLS PLUGIN UPDATER END *****/
/************************************
* the code below is just a standard
* options page. Substitute with
* your own.
*************************************/
function wpls_sample_license_menu() {
add_plugins_page( 'Licensed Plugin', 'Licensed Plugin', 'manage_options', 'licensed-plugin', 'wpls_sample_license_page' );
}
add_action('admin_menu', 'wpls_sample_license_menu');
function wpls_sample_license_page() {
$license = get_option( 'wpls_sample_license_key' );
$status = get_option( 'wpls_sample_license_status' );
$type = get_option( 'wpls_sample_license_key_type' );
?>
<div class="wrap">
<h2><?php _e('Licensed Plugin Options'); ?></h2>
<form method="post" action="options.php">
<?php settings_fields('wpls_sample_license'); ?>
<table class="form-table">
<tbody>
<tr valign="top">
<th scope="row" valign="top">
<label for="wpls_sample_license_url"><?php _e('Where you get license?'); ?></label>
</th>
<td>
<?php _e('Please visit <a href="http://pro.licenshop.com">http://pro.licenshop.com</a> to get your license for free.'); ?>
</td>
</tr>
<tr valign="top">
<th scope="row" valign="top">
<label for="wpls_sample_license_key"><?php _e('License Key:'); ?></label>
</th>
<td>
<input id="wpls_sample_license_key" name="wpls_sample_license_key" type="text" class="regular-text" value="<?php esc_attr_e( $license ); ?>" />
<p class="description"><?php _e('Enter your license key'); ?></p>
</td>
</tr>
<?php if( false !== $license ) { ?>
<tr valign="top">
<th scope="row" valign="top">
<label for="act_button"><?php _e('Action Button:'); ?></label>
</th>
<td>
<?php if( $status !== false && ($status == 'active' || $status == 'activated') ) { ?>
<?php wp_nonce_field( 'wpls_sample_nonce', 'wpls_sample_nonce' ); ?>
<input type="submit" class="button-secondary" name="wpls_license_deactivate" value="<?php _e('Deactivate License'); ?>"/>
<span style="color:green;"><?php _e('Active'); ?></span>
<?php } else {
wp_nonce_field( 'wpls_sample_nonce', 'wpls_sample_nonce' ); ?>
<input type="submit" class="button-secondary" name="wpls_license_activate" value="<?php _e('Activate License'); ?>"/>
<?php } ?>
</td>
</tr>
<tr valign="top">
<th scope="row" valign="top"><?php _e('License data');?></th>
<td><?php echo wpls_sample_get_license_data();?></td>
</tr>
<tr valign="top">
<th scope="row" valign="top"><?php _e('Advance Feature');?></th>
<td>
<p><strong><?php _e('BASIC FEATURES');?></strong></p>
<p>
<ol>
<li><?php _e('FEATURE #1');?></li>
<li><?php _e('FEATURE #2');?></li>
<li><?php _e('FEATURE #3');?></li>
</ol>
</p>
<p><strong><?php _e('MORE FEATURES?');?></strong></p>
<?php if($type == 'PRO' || $type == 'DEVELOPER'){?>
<p>
<ol>
<li><?php _e('FEATURE #4');?></li>
<li><?php _e('FEATURE #5');?></li>
<li><?php _e('FEATURE #6');?></li>
</ol>
</p>
<?php
}
else {
echo '<p><strong><a href="'.wpls_sample_ugeturl('PRO').'">'.__('Upgrade to more...').'</a></strong></p>';
}
if($type == 'DEVELOPER'){?>
<p>
<ol>
<li><?php _e('FEATURE #7');?></li>
<li><?php _e('FEATURE #8');?></li>
<li><?php _e('FEATURE #9');?></li>
</ol>
</p>
<?php
}
else {
echo '<p><strong><a href="'.wpls_sample_ugeturl('DEVELOPER').'">'.__('Upgrade to more...').'</a></strong></p>';
}
?>
</td>
</tr>
<?php } ?>
</tbody>
</table>
<?php submit_button(); ?>
</form>
<?php
}
function wpls_sample_register_option() {
// creates our settings in the options table
register_setting('wpls_sample_license', 'wpls_sample_license_key', 'wpls_sanitize_license' );
}
add_action('admin_init', 'wpls_sample_register_option');
function wpls_sanitize_license( $new ) {
$old = get_option( 'wpls_sample_license_key' );
if( $old && $old != $new ) {
delete_option( 'wpls_sample_license_status' ); // new license has been entered, so must reactivate
}
return $new;
}
/************************************
* this illustrates how to activate
* a license key
*************************************/
function wpls_sample_activate_license() {
// listen for our activate button to be clicked
if( isset( $_POST['wpls_license_activate'] ) ) {
// run a quick security check
if( ! check_admin_referer( 'wpls_sample_nonce', 'wpls_sample_nonce' ) )
return; // get out if we didn't click the Activate button
// retrieve the license from the database
$license = get_option( 'wpls_sample_license_key' );
// data to send in our API request
$api_params = array(
'wpls_action' => 'activate',
'license' => $license,
'code' => urlencode( WPLS_SAMPLE_ITEM_CODE ), // the CODE of our product in WPLS
'url' => home_url(),
'host' => isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR']
);
// Call the custom API.
$response = wp_remote_get( add_query_arg( $api_params, WPLS_SAMPLE_STORE_URL ), array( 'timeout' => 15, 'sslverify' => false ) );
// make sure the response came back okay
if ( is_wp_error( $response ) )
return false;
// decode the license data
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
// $license_data->license_status will be either "valid" or "invalid"
update_option( 'wpls_sample_license_status', $license_data->license_status );
update_option( 'wpls_sample_license_key_type', $license_data->license_type );
}
}
add_action('admin_init', 'wpls_sample_activate_license');
/***********************************************
* Illustrates how to deactivate a license key.
* This will descrease the site count
***********************************************/
function wpls_sample_deactivate_license() {
// listen for our activate button to be clicked
if( isset( $_POST['wpls_license_deactivate'] ) ) {
// run a quick security check
if( ! check_admin_referer( 'wpls_sample_nonce', 'wpls_sample_nonce' ) )
return; // get out if we didn't click the Activate button
// retrieve the license from the database
$license = get_option( 'wpls_sample_license_key' );
// data to send in our API request
$api_params = array(
'wpls_action' => 'deactivate',
'license' => $license,
'code' => urlencode( WPLS_SAMPLE_ITEM_CODE ), // the CODE of our product in WPLS
'url' => home_url(),
'host' => isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR']
);
// Call the custom API.
$response = wp_remote_get( add_query_arg( $api_params, WPLS_SAMPLE_STORE_URL ), array( 'timeout' => 15, 'sslverify' => false ) );
// make sure the response came back okay
if ( is_wp_error( $response ) )
return false;
// decode the license data
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
// $license_data->license_status will be either "deactivated" or "failed"
if( $license_data->license_status == 'deactivated' )
delete_option( 'wpls_sample_license_status' );
delete_option( 'wpls_sample_license_key_type');
}
}
add_action('admin_init', 'wpls_sample_deactivate_license');
/************************************
* this illustrates how to check if a license key is still valid
* the updater does this for you, so this is only needed if you
* want to do something custom
*************************************/
function wpls_sample_check_license() {
global $wp_version;
$license = get_option( 'wpls_sample_license_key' );
$api_params = array(
'wpls_action' => 'check_license',
'license' => $license,
'code' => urlencode( WPLS_SAMPLE_ITEM_CODE ),
'url' => home_url(),
'host' => isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR']
);
// Call the custom API.
$response = wp_remote_get( add_query_arg( $api_params, WPLS_SAMPLE_STORE_URL ), array( 'timeout' => 15, 'sslverify' => false ) );
if ( is_wp_error( $response ) )
return false;
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
return $license_data;
}
function wpls_sample_get_license_data() {
global $wp_version;
$license = get_option( 'wpls_sample_license_key' );
$api_params = array(
'wpls_action' => 'get_data',
'license' => $license,
'code' => urlencode( WPLS_SAMPLE_ITEM_CODE ),
'url' => home_url(),
'host' => isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR']
);
// Call the custom API.
$response = wp_remote_get( add_query_arg( $api_params, WPLS_SAMPLE_STORE_URL ), array( 'timeout' => 15, 'sslverify' => false ) );
if ( is_wp_error( $response ) )
return false;
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
$data = "";
foreach ($license_data as $key => $value){
$data .= $key.": <strong>".$value."</strong>"."<br />";
}
return $data;
}
function wpls_sample_ugeturl($type) {
$license = trim( get_option( 'wpls_sample_license_key' ) );
$api_params = array(
'wpls_action' => 'do_upgrade',
'license' => $license,
'code' => urlencode( WPLS_SAMPLE_ITEM_CODE ), // the CODE of our product in WPLS
'url' => home_url(),
'host' => isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : $_SERVER['LOCAL_ADDR'],
'type' => $type
);
$response = wp_remote_get( add_query_arg( $api_params, WPLS_SAMPLE_STORE_URL ), array( 'timeout' => 15, 'sslverify' => false ) );
if ( is_wp_error( $response ) )
return false;
$license_data = json_decode( wp_remote_retrieve_body( $response ) );
return ($license_data->upgrade_url == false ? '#' : $license_data->upgrade_url);
}
function wpls_sample_cron() {
if( !wp_next_scheduled( 'wpls_sample_cronhook' ) ) {
wp_schedule_event( time(), 'twicedaily', 'wpls_sample_cronhook' );
}
add_action( 'wpls_sample_cronhook', 'wpls_sample_activate_license' );
if ( ! wp_next_scheduled( 'wpls_sample_typehook' ) ) {
wp_schedule_event( time(), 'hourly', 'wpls_sample_typehook' );
}
add_action( 'wpls_sample_typehook', 'wpls_sample_update_type' );
}
add_action( 'init', 'wpls_sample_cron');
function wpls_sample_update_type(){
$license_data = wpls_sample_check_license();
update_option( 'wpls_sample_license_key_type', $license_data->license_type);
}
