JezK

Edit File: class-plugin-updater.php

<?php

namespace PixelYourSite;

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

// uncomment this line for testing
//set_site_transient( 'update_plugins', null );

/**
 * Allows plugins to use their own update API.
 *
 * This is used strictly for add-on updates, NOT for updating the core plugin itself (PixelYourSite).
 * If you decide to download and install free or paid add-ons from our site (Pinterest Tag, Bing Tag), we will perform checks for updates.
 * If you hold a valid license for the add-on, we will download the update from our server.
 *
 * @author  Easy Digital Downloads
 * @version 1.6.14
 */
class Plugin_Updater {

private $api_url = '';
    private $api_data = array();
    private $name = '';
    private $slug = '';
    private $version = '';
    private $wp_override = false;
    private $cache_key = '';

private $beta = false;

private $plugin_data = [];
    /**
     * Class constructor.
     *
     * @uses plugin_basename()
     * @uses hook()
     *
     * @param string $_api_url     The URL pointing to the custom API endpoint.
     * @param string $_plugin_file Path to the plugin file.
     * @param array  $_api_data    Optional data to send with API calls.
     */
    public function __construct( $_api_url, $_plugin_file, $_api_data = null ) {
        $this->api_url     = trailingslashit( $_api_url );
        $this->api_data    = $_api_data;
        $this->name        = plugin_basename( $_plugin_file );
        $this->slug        = basename( $_plugin_file, '.php' );
        $this->version     = $_api_data['version'];
        $this->wp_override = isset( $_api_data['wp_override'] ) ? (bool) $_api_data['wp_override'] : false;
        $this->beta        = ! empty( $this->api_data['beta'] ) ? true : false;
        $this->cache_key   = 'pys_api_request_' . md5( serialize( $this->slug . $this->api_data['license'] . $this->beta ) );

$this->plugin_data[ $this->slug ] = $this->api_data;

// Set up hooks.
        $this->init();

}

/**
     * Set up WordPress filters to hook into WP's update process.
     *
     * @uses add_filter()
     *
     * @return void
     */
    public function init() {

add_filter( 'site_transient_update_plugins', array( $this, 'check_update' ) );
        add_filter( 'plugins_api', array( $this, 'plugins_api_filter' ), 10, 3 );
        remove_action( 'after_plugin_row_' . $this->name, 'wp_plugin_update_row', 10 );
        add_action( 'after_plugin_row_' . $this->name, array( $this, 'show_update_notification' ), 10, 2 );
        add_action( 'admin_init', array( $this, 'show_changelog' ) );
		
	}
	
	/**
	 * Check for Updates at the defined API endpoint and modify the update array.
	 *
	 * This function dives into the update API just when WordPress creates its update array,
	 * then adds a custom API call and injects the custom plugin data retrieved from the API.
	 * It is reassembled from parts of the native WordPress plugin update code.
	 * See wp-includes/update.php line 121 for the original wp_update_plugins() function.
	 *
	 * @uses api_request()
	 *
	 * @param array $_transient_data Update array build by WordPress.
	 *
	 * @return array Modified update array with custom plugin data.
	 */
	public function check_update( $_transient_data ) {
		
		global $pagenow;
		
		if ( ! is_object( $_transient_data ) ) {
			$_transient_data = new \stdClass;
		}
		
		if ( 'plugins.php' == $pagenow && is_multisite() ) {
			return $_transient_data;
		}
		
		if ( ! empty( $_transient_data->response ) && ! empty( $_transient_data->response[ $this->name ] ) && false === $this->wp_override ) {
			return $_transient_data;
		}
		
		$version_info = $this->get_cached_version_info();

$need_refresh = false;

// Check if version_info is missing or incomplete || Cache expired
        if ( ! $version_info || $this->is_cache_expired() ) {
            $need_refresh = true;
        }

if ( $need_refresh ) {
            $version_info = $this->api_request( 'plugin_latest_version',
                array( 'slug' => $this->slug, 'beta' => $this->beta ) );
            $timeout = $this->get_timeout();
            $this->set_version_info_cache( $version_info,"",$timeout );

}

if ( false !== $version_info && is_object( $version_info ) && isset( $version_info->new_version ) ) {

if ( version_compare( $this->version, $version_info->new_version, '<' ) ) {

$_transient_data->response[ $this->name ] = $version_info;

}

$_transient_data->last_checked           = current_time( 'timestamp' );
            $_transient_data->checked[ $this->name ] = $this->version;

}
		
		return $_transient_data;
	}
	
	/**
	 * show update nofication row -- needed for multisite subsites, because WP won't tell you otherwise!
	 *
	 * @param string $file
	 * @param array  $plugin
	 */
	public function show_update_notification( $file, $plugin ) {

if ( is_network_admin() ) {
            return;
        }

if ( ! current_user_can( 'update_plugins' ) ) {
            return;
        }

if ( ! is_multisite() ) {
            return;
        }

if ( $this->name != $file ) {
			return;
		}
		
		// Remove our filter on the site transient
        remove_filter( 'site_transient_update_plugins', array( $this, 'check_update' ), 10 );

$update_cache = get_site_transient( 'update_plugins' );

$update_cache = is_object( $update_cache ) ? $update_cache : new \stdClass();

if ( empty( $update_cache->response ) || empty( $update_cache->response[ $this->name ] ) ) {

$version_info = $this->get_cached_version_info();

$need_refresh = false;

// Check if version_info is missing or incomplete || Cache expired
            if ( ! $version_info || $this->is_cache_expired() ) {
                $need_refresh = true;
            }

if ( $need_refresh ) {
                $version_info = $this->api_request( 'plugin_latest_version',
                    array( 'slug' => $this->slug, 'beta' => $this->beta ) );
                $timeout = $this->get_timeout();
                $this->set_version_info_cache( $version_info,"",$timeout );
            }

if ( ! is_object( $version_info ) ) {
                return;
            }

if ( version_compare( $this->version, $version_info->new_version, '<' ) ) {

$update_cache->response[ $this->name ] = $version_info;

}

$update_cache->last_checked           = current_time( 'timestamp' );
            $update_cache->checked[ $this->name ] = $this->version;

set_site_transient( 'update_plugins', $update_cache );

} else {

$version_info = $update_cache->response[ $this->name ];

}

// Restore our filter
        add_filter( 'site_transient_update_plugins', array( $this, 'check_update' ) );

if ( ! empty( $update_cache->response[ $this->name ] ) && version_compare( $this->version,
                $version_info->new_version, '<' ) ) {

// build a plugin list row, with update notification
            $wp_list_table = _get_list_table( 'WP_Plugins_List_Table' );
            # <tr class="plugin-update-tr"><td colspan="' . $wp_list_table->get_column_count() . '" class="plugin-update colspanchange">
            echo '<tr class="plugin-update-tr" id="' . $this->slug . '-update" data-slug="' . $this->slug . '" data-plugin="' . $this->slug . '/' . $file . '">';
            echo '<td colspan="3" class="plugin-update colspanchange">';
            echo '<div class="update-message notice inline notice-warning notice-alt">';

$changelog_link = self_admin_url( 'index.php?edd_sl_action=view_plugin_changelog&plugin=' . $this->name . '&slug=' . $this->slug . '&TB_iframe=true&width=772&height=911' );

if ( empty( $version_info->download_link ) ) {
                printf(
                    __( 'There is a new version of %1$s available. %2$sView version %3$s details%4$s.',
                        'easy-digital-downloads' ),
                    esc_html( $version_info->name ),
                    '<a target="_blank" class="thickbox" href="' . esc_url( $changelog_link ) . '">',
                    esc_html( $version_info->new_version ),
                    '</a>'
                );
            } else {
                printf(
                    __( 'There is a new version of %1$s available. %2$sView version %3$s details%4$s or %5$supdate now%6$s.',
                        'easy-digital-downloads' ),
                    esc_html( $version_info->name ),
                    '<a target="_blank" class="thickbox" href="' . esc_url( $changelog_link ) . '">',
                    esc_html( $version_info->new_version ),
                    '</a>',
                    '<a href="' . esc_url( wp_nonce_url( self_admin_url( 'update.php?action=upgrade-plugin&plugin=' ) . $this->name,
                        'upgrade-plugin_' . $this->name ) ) . '">',
                    '</a>'
                );
            }

do_action( "in_plugin_update_message-{$file}", $plugin, $version_info );

echo '</div></td></tr>';
        }
	}
	
	/**
	 * Updates information on the "View version x.x details" page with custom data.
	 *
	 * @uses api_request()
	 *
	 * @param mixed  $_data
	 * @param string $_action
	 * @param object $_args
	 *
	 * @return object $_data
	 */
    public function plugins_api_filter( $_data, $_action = '', $_args = null ) {

if ( $_action != 'plugin_information' ) {

return $_data;

}

if ( ! isset( $_args->slug ) || ( $_args->slug != $this->slug ) ) {

return $_data;

}

$to_send = array(
            'slug'   => $this->slug,
            'is_ssl' => is_ssl(),
            'fields' => array(
                'banners' => array(),
                'reviews' => false
            )
        );

$cache_key = 'pys_api_request_' . md5( serialize( $this->slug . $this->api_data['license'] . $this->beta ) );

// Get the transient where we store the api request for this plugin for 24 hours
        $edd_api_request_transient = $this->get_cached_version_info( $cache_key );

//If we have no transient-saved value, run the API, set a fresh transient with the API value, and return that value too right now.
        if ( empty( $edd_api_request_transient ) || $this->is_cache_expired($cache_key) ) {

$api_response = $this->api_request( 'plugin_information', $to_send );

// Expires in 3 hours
            $timeout = $this->get_timeout();
            $this->set_version_info_cache( $api_response, $cache_key,$timeout );

if ( false !== $api_response ) {
                $_data = $api_response;
            }

} else {
            $_data = $edd_api_request_transient;
        }

// Convert sections into an associative array, since we're getting an object, but Core expects an array.
        if ( isset( $_data->sections ) && ! is_array( $_data->sections ) ) {
            $new_sections = array();
            foreach ( $_data->sections as $key => $value ) {
                $new_sections[ $key ] = $value;
            }

$_data->sections = $new_sections;
        }

// Convert banners into an associative array, since we're getting an object, but Core expects an array.
        if ( isset( $_data->banners ) && ! is_array( $_data->banners ) ) {
            $new_banners = array();
            foreach ( $_data->banners as $key => $value ) {
                $new_banners[ $key ] = $value;
            }

$_data->banners = $new_banners;
        }

return $_data;
    }
	
	/**
	 * Disable SSL verification in order to prevent download update failures
	 *
	 * @param array  $args
	 * @param string $url
	 *
	 * @return object $array
	 */
    public function http_request_args( $args, $url ) {

$verify_ssl = $this->verify_ssl();
        if ( strpos( $url, 'https://' ) !== false && strpos( $url, 'edd_action=package_download' ) ) {
            $args['sslverify'] = $verify_ssl;
        }

return $args;

}
	
	/**
	 * Calls the API and, if successfull, returns the object delivered by the API.
	 *
	 * @uses get_bloginfo()
	 * @uses wp_remote_post()
	 * @uses is_wp_error()
	 *
	 * @param string $_action The requested action.
	 * @param array  $_data   Parameters for the API action.
	 *
	 * @return false|object
	 */
    private function api_request( $_action, $_data ) {

global $wp_version;

$data = array_merge( $this->api_data, $_data );

if ( $data['slug'] != $this->slug ) {
            return;
        }

if ( $this->api_url == trailingslashit( home_url() ) ) {
            return false; // Don't allow a plugin to ping itself
        }

$api_params = array(
            'edd_action' => 'get_version',
            'license'    => ! empty( $data['license'] ) ? $data['license'] : '',
            'item_name'  => isset( $data['item_name'] ) ? $data['item_name'] : false,
            'item_id'    => isset( $data['item_id'] ) ? $data['item_id'] : false,
            'version'    => isset( $data['version'] ) ? $data['version'] : false,
            'slug'       => $data['slug'],
            'author'     => $data['author'],
            'url'        => home_url(),
            'beta'       => ! empty( $data['beta'] ),
        );

$verify_ssl = $this->verify_ssl();
        $request    = wp_remote_post( $this->api_url,
            array( 'timeout' => 15, 'sslverify' => $verify_ssl, 'body' => $api_params ) );

if ( ! is_wp_error( $request ) ) {
            $request = json_decode( wp_remote_retrieve_body( $request ) );
        }

if ( $request && isset( $request->sections ) ) {
            $request->sections = maybe_unserialize( $request->sections );
        }

if ( $request && isset( $request->banners ) ) {
            $request->banners = maybe_unserialize( $request->banners );
        }

if ( ! empty( $request->sections ) ) {
            foreach ( $request->sections as $key => $section ) {
                $request->$key = (array) $section;
            }
        }

return $request;
    }

public function show_changelog() {

if ( empty( $_REQUEST['edd_sl_action'] ) || 'view_plugin_changelog' != $_REQUEST['edd_sl_action'] ) {
            return;
        }

if ( empty( $_REQUEST['plugin'] ) ) {
            return;
        }

if ( empty( $_REQUEST['slug'] ) ) {
            return;
        }

if ( ! current_user_can( 'update_plugins' ) ) {
            wp_die( __( 'You do not have permission to install plugin updates', 'easy-digital-downloads' ),
                __( 'Error', 'easy-digital-downloads' ), array( 'response' => 403 ) );
        }
        $edd_plugin_data_slag = sanitize_text_field($_REQUEST['slug']);
        $data         = $this->plugin_data[ $edd_plugin_data_slag ];
        $beta         = ! empty( $data['beta'] ) ? true : false;
        $cache_key    = 'pys_api_request_' . md5( serialize( $_REQUEST['plugin'] . $this->api_data['license'] . $this->beta ) );
        $version_info = $this->get_cached_version_info( $cache_key );

if ( false === $version_info || $this->is_cache_expired($cache_key)) {

$api_params = array(
                'edd_action' => 'get_version',
                'item_name'  => isset( $data['item_name'] ) ? $data['item_name'] : false,
                'item_id'    => isset( $data['item_id'] ) ? $data['item_id'] : false,
                'slug'       => $edd_plugin_data_slag,
                'author'     => $data['author'],
                'url'        => home_url(),
                'beta'       => ! empty( $data['beta'] )
            );

$verify_ssl = $this->verify_ssl();
            $request    = wp_remote_post( $this->api_url,
                array( 'timeout' => 15, 'sslverify' => $verify_ssl, 'body' => $api_params ) );

if ( ! is_wp_error( $request ) ) {
                $version_info = json_decode( wp_remote_retrieve_body( $request ) );
            }

if ( ! empty( $version_info ) && isset( $version_info->sections ) ) {
                $version_info->sections = maybe_unserialize( $version_info->sections );
            } else {
                $version_info = false;
            }

if ( ! empty( $version_info ) ) {
                foreach ( $version_info->sections as $key => $section ) {
                    $version_info->$key = (array) $section;
                }
            }
            $timeout = $this->get_timeout();
            $this->set_version_info_cache( $version_info, $cache_key,$timeout );

}

$allowed_html = [
            'p'      => [],
            'ul'     => [],
            'li'     => [],
            'strong' => [],
            'em'     => [],
            'a'      => ['href' => [], 'title' => []],
        ];

if ( ! empty( $version_info ) && isset( $version_info->sections['changelog'] ) ) {
            echo '<div style="background:#fff;padding:10px;">' . wp_kses($version_info->sections['changelog'], $allowed_html) . '</div>';
        }

exit;
    }

public function is_cache_expired( $cache_key = '' ){
        if ( empty( $cache_key ) ) {
            $cache_key = $this->cache_key;
        }

$cache = get_option( $cache_key );

if ( empty( $cache['timeout'] ) || current_time( 'timestamp' ) > $cache['timeout'] ) {
            return true; // Cache is expired
        }
        return false;
    }
    public function get_cached_version_info( $cache_key = '' ) {

if ( empty( $cache_key ) ) {
            $cache_key = $this->cache_key;
        }

$cache = get_option( $cache_key );

if ( isset( $cache['value'] ) && is_string( $cache['value'] ) ) {
            return json_decode( $cache['value'] );
        }

return false;

}

public function set_version_info_cache( $value = '', $cache_key = '',$timeout = null ) {

if ( empty( $cache_key ) ) {
            $cache_key = $this->cache_key;
        }

if($timeout == null) {
            $timeout = $this->get_timeout();
        }

$data = array(
            'timeout' => $timeout,
            'value'   => json_encode( $value )
        );

update_option( $cache_key, $data, 'no' );

}

/**
     * Returns if the SSL of the store should be verified.
     *
     * @since  1.6.13
     * @return bool
     */
    private function verify_ssl() {
        return (bool) apply_filters( 'edd_sl_api_request_verify_ssl', true, $this );
    }
    private function get_timeout() {
        return ($this->slug == "pixelyoursite-pinterest")
            ? strtotime('+48 hours', current_time('timestamp'))
            : strtotime('+24 hours', current_time('timestamp'));
    }
    private function is_url_working( $url ): bool {
        $response = wp_remote_head( $url, [
            'timeout'   => 10,
            'sslverify' => $this->verify_ssl(),
        ]);

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

$status_code = wp_remote_retrieve_response_code( $response );
        return $status_code >= 200 && $status_code < 400;
    }
}