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<?php if ( ! defined( 'ABSPATH' ) ) exit;

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/**

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* This class handles all the update-related stuff for extensions, including adding a license section to the license tab.

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* It accepts two args: Product Name and Version.

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* @param $product_name string

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* @param $version string

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* @since 2.2.47

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* @return void

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class NF_Extension_Updater

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{

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public $product_nice_name = '';

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public $product_name = '';

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public $version = '';

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public $store_url = 'https://ninjaforms.com/update-check/';

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public $file = '';

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public $author = '';

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public $error = '';

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private $_last_error;

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/**

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* Constructor function

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* @since 2.2.47

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* @updated 3.0

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* @return void

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public function __construct( $product_name, $version, $author, $file, $slug = '' )

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{

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$this->product_nice_name = $product_name;

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if ( $slug == '' ) {

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$this->product_name = strtolower( $product_name );

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$this->product_name = preg_replace( "/[^a-zA-Z]+/", "", $this->product_name );

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} else {

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$this->product_name = $slug;

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}

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$this->version = $version;

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$this->file = $file;

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$this->author = $author;

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$this->auto_update();

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add_filter( 'ninja_forms_settings_licenses_addons', array( $this, 'register' ) );

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}

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/**

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* Function that adds the license entry fields to the license tab.

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* @updated 3.0

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* @param array $licenses

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* @return array $licenses

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function register( $licenses ) {

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$licenses[] = $this;

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return $licenses;

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}

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* Function that activates our license

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* @since 2.2.47

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* @return void

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function activate_license( $license_key ) {

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// data to send in our API request

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$api_params = array(

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'edd_action'=> 'activate_license',

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'license' => $license_key,

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'item_name' => urlencode( $this->product_nice_name ), // the name of our product in EDD

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'url' => home_url()

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);

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// Call the custom API.

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$response = wp_remote_post( $this->store_url, array( 'timeout' => 15, 'sslverify' => false, 'body' => $api_params ) );

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$this->maybe_debug( $response );

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// make sure the response came back okay

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if ( is_wp_error( $response ) )

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return false;

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// decode the license data

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$license_data = json_decode( wp_remote_retrieve_body( $response ) );

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if ( 'invalid' == $license_data->license ) {

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$error = '<span style="color: red;">' . esc_html__( 'Could not activate license. Please verify your license key', 'ninja-forms' ) . '</span>';

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if ( isset ( $_REQUEST[ 'nf_debug' ] ) && 1 == absint( $_REQUEST[ 'nf_debug' ] ) ) {

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// Add an error to our admin notice if nf_debug is turned on.

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add_filter( 'nf_admin_notices', array( $this, 'show_license_error_notice' ) );

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$this->_last_error = var_export( $license_data, true );

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}

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Ninja_Forms()->logger()->emergency( var_export( $license_data, true ) );

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} else {

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$error = '';

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}

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Ninja_Forms()->update_setting( $this->product_name . '_license', $license_key );

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Ninja_Forms()->update_setting( $this->product_name . '_license_error', $error );

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Ninja_Forms()->update_setting( $this->product_name . '_license_status', $license_data->license );

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}

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public function show_license_error_notice( $notices ) {

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$notices[ 'license_error' ] = array(

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'title' => esc_html__( 'License Activation Error', 'ninja-forms' ),

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'msg' => '<pre>' . $this->_last_error . '</pre>',

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'int' => 0,

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'ignore_spam' => true,

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);

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return $notices;

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}

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* Function that deactivates our license if the user clicks the "Deactivate License" button.

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* @since 2.2.47

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* @return void

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function deactivate_license() {

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$license = Ninja_Forms()->get_setting( $this->product_name . '_license' );

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// data to send in our API request

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$api_params = array(

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'edd_action'=> 'deactivate_license',

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'license' => $license,

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'item_name' => urlencode( $this->product_nice_name ), // the name of our product in EDD

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'url' => home_url()

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);

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// Call the custom API.

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$response = wp_remote_post( $this->store_url, array( 'timeout' => 15, 'sslverify' => false, 'body' => $api_params ) );

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$this->maybe_debug( $response );

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// make sure the response came back okay

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if ( is_wp_error( $response ) )

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return false;

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Ninja_Forms()->update_setting( $this->product_name.'_license_error', '' );

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Ninja_Forms()->update_setting( $this->product_name.'_license_status', 'invalid' );

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Ninja_Forms()->update_setting( $this->product_name.'_license', '' );

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}

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/**

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* Function that runs all of our auto-update functionality

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* @since 2.2.47

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* @updates 3.0

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* @return void

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function auto_update() {

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$edd_updater = new EDD_SL_Plugin_Updater( $this->store_url, $this->file, array(

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'author' => $this->author, // author of this plugin

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'version' => $this->version, // current version number

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'item_name' => $this->product_nice_name, // name of this plugin

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'license' => Ninja_Forms()->get_setting( $this->product_name.'_license' ), // license key

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)

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);

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// Hook into the "after plugin row" display for this Ninja Forms add-on.

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add_action( 'after_plugin_row_' . plugin_basename( $this->file ), array( $this, 'maybe_prevent_update_notice' ), 9, 3 );

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// Filter that expects either a bool false to continue install or a WP_Error to prevent installation of an update.

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add_filter( 'upgrader_pre_install', array( $this, 'maybe_prevent_install' ), 10, 2 );

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} // function auto_update

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/**

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* Function that maybe prevents a plugin update from installing if the php version is not high enough.

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* @since 3.4.24

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* @param bool $default false

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* @param array $extra array sent by the filter we're using.

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* @return bool/WP_ERROR $default if we bail early, WP_ERROR if we don't.

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public function maybe_prevent_install( $default, $extra )

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{

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// If the plugin being installed isn't this one, bail.

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$plugin = plugin_basename( $this->file );

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if(!isset($extra['plugin']) || $plugin != $extra[ 'plugin' ] ) {

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return $default;

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}

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// Grab our WP Updates transient so that we can check the minimum PHP version

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$update_transient = get_option( '_site_transient_update_plugins' );

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// Check to see if we have a php_requires setting for our update.

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$php_requires = isset( $update_transient->response[ $plugin ]->php_requires ) ? $update_transient->response[ $plugin ]->php_requires : false;

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// If we don't have a php_requires setting or our php version meets the php_requires setting, bail.

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if( empty( $php_requires ) || version_compare( PHP_VERSION, $php_requires, '>=' ) ) {

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return $default;

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}

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return new WP_Error( 'php_minimum_version', sprintf( esc_html__( 'The new version requires at least PHP %s, and your PHP version is %s.', 'ninja-forms' ), $php_requires, PHP_VERSION ), esc_html__( 'Please contact your host to upgrade your site\'s PHP version.' ) );

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}

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/**

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* Check to see if this plugin update has a minimum PHP version.

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* If it does, make sure that we meet it.

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* If we don't meet it, then show the user an error message with a link to WordPress.org's minimum requirements page.

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* @since 3.4.24

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* @param string $plugin_file plugin file for the row we're looking at

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* @param array $plugin_data update data from the WordPress plugin update check

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* @param string $plugin_status is this plugin active, inactive, etc.

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* @return void

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public function maybe_prevent_update_notice( $plugin_file, $plugin_data, $plugin_status )

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{

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$php_requires = isset( $plugin_data[ 'php_requires' ] ) ? $plugin_data[ 'php_requires' ] : '';

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// Return early if the current PHP version is equal to or greater than the PHP version required by the new version of this add-on.

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if ( version_compare( PHP_VERSION, $php_requires, '>=' ) ) {

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return false;

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}

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remove_action( 'after_plugin_row_' . plugin_basename( $this->file ), 'wp_plugin_update_row', 10 );

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echo '<tr class="update-error">

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<p>

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' . sprintf( esc_html__( 'An update is available for %s, however, you are not able to update at this time.', 'ninja-forms' ), 'Ninja Forms - ' . $this->product_nice_name ) . '

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<br />

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<strong>' . sprintf( esc_html__( 'The new version requires at least PHP %s, and your PHP version is %s.', 'ninja-forms' ), $php_requires, PHP_VERSION ) . '</strong>

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<br />

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' . sprintf( esc_html__( 'Please contact your host to upgrade your site\'s PHP version. %sRead more about updating your PHP version and WordPress%s.' ), '<a href="https://wordpress.org/about/requirements/" target="_blank">', '</a>' ) . '

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</p>

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</div>

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</td>

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</tr>';

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}

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/**

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* Return whether or not this license is valid.

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* @access public

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* @since 2.9

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* @return bool

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public function is_valid() {

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return ( 'valid' == Ninja_Forms()->get_setting( $this->product_name.'_license_status' ) );

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}

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/**

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* Get any error messages for this license field.

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* @access public

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* @since 2.9

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* @return string $error

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public function get_error() {

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return Ninja_Forms()->get_setting( $this->product_name . '_license_error' );

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}

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private function maybe_debug( $data, $key = 'debug' )

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{

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if ( isset ( $_GET[ $key ] ) && 'true' == $_GET[ $key ] ) {

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echo '<pre>'; var_dump( $data ); echo '</pre>';

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die();

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}

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}

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} // End Class NF_Extension_Updater

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