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✏️ Editing: Support.php

<?php
/**
 * Class for managing technical support components
 */

// Don't load directly
if ( ! defined( 'ABSPATH' ) ) {
	die( '-1' );
}

if ( ! class_exists( 'Tribe__Support' ) ) {

class Tribe__Support {

public static $support;
		public        $rewrite_rules_purged = false;

/**
		 * The wp_options key used to store the optin_key
		 *
		 * @since 4.14.5
		 *
		 * @var string
		 */
		public static $option_key = 'tribe_systeminfo_optin';

/**
		 * @var Tribe__Support__Obfuscator
		 */
		protected $obfuscator;

/**
		 * Fields listed here contain HTML and should be escaped before being
		 * printed.
		 *
		 * @var array
		 */
		protected $must_escape = [
			'tribeEventsAfterHTML',
			'tribeEventsBeforeHTML',
			'dateWithYearFormat',
			'dateWithoutYearFormat',
			'monthAndYearFormat',
		];

/**
		 * Field prefixes here should be partially obfuscated before being printed.
		 *
		 * @var array
		 */
		protected $must_obfuscate_prefixes = [
			'pue_install_key_',
			'google_maps_js_api_key',
		];

private function __construct() {
			/**
			 * Allows for customizing the list of fields by array key whose values must be HTML-escaped.
			 *
			 * @param array $must_escape An array of array keys corresponding to fields whose values must be HTML-escaped.
			 */
			$this->must_escape = (array) apply_filters( 'tribe_help_must_escape_fields', $this->must_escape );

add_action( 'tribe_help_pre_get_sections', [ $this, 'append_system_info' ], 10 );
			add_action( 'delete_option_rewrite_rules', [ $this, 'log_rewrite_rule_purge' ] );

add_action( 'rest_api_init', [ __CLASS__, 'create_sysinfo_endpoint' ] );
			add_action( 'wp_ajax_tribe_toggle_sysinfo_optin', [ __CLASS__, 'ajax_sysinfo_optin' ] );
		}

/**
		 * Display help tab info in events settings
		 *
		 * @param Tribe__Admin__Help_Page $help The Help Page Instance
		 */
		public function append_system_info( Tribe__Admin__Help_Page $help ) {
			$help->add_section_content( 'system-info', $this->formattedSupportStats(), 10 );
		}

/**
		 * Collect system information for support
		 *
		 * @return array of system data for support
		 */
		public function getSupportStats() {
			global $wpdb;
			$user = wp_get_current_user();

$plugins = [];
			if ( function_exists( 'get_plugin_data' ) ) {
				$plugins_raw = wp_get_active_and_valid_plugins();
				foreach ( $plugins_raw as $k => $v ) {
					$plugin_details = get_plugin_data( $v );
					$plugin         = $plugin_details['Name'];
					if ( ! empty( $plugin_details['Version'] ) ) {
						$plugin .= sprintf( ' version %s', $plugin_details['Version'] );
					}
					if ( ! empty( $plugin_details['Author'] ) ) {
						$plugin .= sprintf( ' by %s', $plugin_details['Author'] );
					}
					if ( ! empty( $plugin_details['AuthorURI'] ) ) {
						$plugin .= sprintf( ' (%s)', $plugin_details['AuthorURI'] );
					}
					$plugins[] = $plugin;
				}
			}

$network_plugins = [];
			if ( is_multisite() && function_exists( 'get_plugin_data' ) ) {
				$plugins_raw = wp_get_active_network_plugins();
				foreach ( $plugins_raw as $k => $v ) {
					$plugin_details = get_plugin_data( $v );
					$plugin         = $plugin_details['Name'];
					if ( ! empty( $plugin_details['Version'] ) ) {
						$plugin .= sprintf( ' version %s', $plugin_details['Version'] );
					}
					if ( ! empty( $plugin_details['Author'] ) ) {
						$plugin .= sprintf( ' by %s', $plugin_details['Author'] );
					}
					if ( ! empty( $plugin_details['AuthorURI'] ) ) {
						$plugin .= sprintf( ' (%s)', $plugin_details['AuthorURI'] );
					}
					$network_plugins[] = $plugin;
				}
			}

$mu_plugins = [];
			if ( function_exists( 'get_mu_plugins' ) ) {
				$mu_plugins_raw = get_mu_plugins();
				foreach ( $mu_plugins_raw as $k => $v ) {
					$plugin = $v['Name'];
					if ( ! empty( $v['Version'] ) ) {
						$plugin .= sprintf( ' version %s', $v['Version'] );
					}
					if ( ! empty( $v['Author'] ) ) {
						$plugin .= sprintf( ' by %s', $v['Author'] );
					}
					if ( ! empty( $v['AuthorURI'] ) ) {
						$plugin .= sprintf( ' (%s)', $v['AuthorURI'] );
					}
					$mu_plugins[] = $plugin;
				}
			}

$keys = apply_filters( 'tribe-pue-install-keys', [] );
			//Obfuscate the License Keys for Security
			if ( is_array( $keys ) && ! empty( $keys ) ) {
				$secure_keys = [];
				foreach ( $keys as $plugin => $license ) {
					$secure_keys[ $plugin ] = preg_replace( '/^(.{4}).*(.{4})$/', '$1' . str_repeat( '#', 32 ) . '$2', $license );
				}
				$keys = $secure_keys;
			}

//Server
			$server = explode( ' ', $_SERVER['SERVER_SOFTWARE'] );
			$server = explode( '/', reset( $server ) );

//PHP Information
			$php_info = [];
			$php_vars = [
				'max_execution_time',
				'memory_limit',
				'upload_max_filesize',
				'post_max_size',
				'display_errors',
				'log_errors',
			];

foreach ( $php_vars as $php_var ) {
				if ( isset( $wpdb->qm_php_vars ) && isset( $wpdb->qm_php_vars[ $php_var ] ) ) {
					$val = $wpdb->qm_php_vars[ $php_var ];
				} else {
					$val = ini_get( $php_var );
				}
				$php_info[ $php_var ] = $val;
			}

$homepage = get_option( 'show_on_front' );
			$homepage_page_id = get_option( 'page_on_front' );

if ( 'page' === $homepage ) {
				if ( -10 === (int) $homepage_page_id ) {
					$homepage_page_id .= ' (Main Events Page)';
				} else {
					$homepage_page_id .= ' (' . esc_html( get_the_title( $homepage_page_id ) ) . ')';
				}
			}

$site_url = get_site_url();
			$systeminfo = [
				'Home URL'               => get_home_url(),
				'Site URL'               => $site_url,
				'Site Language'          => get_option( 'WPLANG' ) ? get_option( 'WPLANG' ) : esc_html__( 'English', 'tribe-common' ),
				'Character Set'          => get_option( 'blog_charset' ),
				'Name'                   => $user->display_name,
				'Email'                  => $user->user_email,
				'Install keys'           => $keys,
				'WordPress version'      => get_bloginfo( 'version' ),
				'Permalink Structure'    => $site_url . get_option( 'permalink_structure' ),
				'Your homepage displays' => $homepage,
				'Homepage page ID'       => $homepage_page_id,
				'PHP version'            => phpversion(),
				'PHP'                    => $php_info,
				'Server'                 => $server[0],
				'SAPI'                   => php_sapi_name(),
				'Plugins'                => $plugins,
				'Network Plugins'        => $network_plugins,
				'MU Plugins'             => $mu_plugins,
				'Theme'                  => wp_get_theme()->get( 'Name' ),
				'Multisite'              => is_multisite(),
				'Settings'               => Tribe__Settings_Manager::get_options(),
				'WP Timezone'            => get_option( 'timezone_string' ) ? get_option( 'timezone_string' ) : esc_html__( 'Unknown or not set', 'tribe-common' ),
				'WP GMT Offset'          => get_option( 'gmt_offset' ) ? ' ' . get_option( 'gmt_offset' ) : esc_html__( 'Unknown or not set', 'tribe-common' ),
				'Default PHP Timezone'   => date_default_timezone_get(),
				'WP Date Format'         => get_option( 'date_format' ),
				'WP Time Format'         => get_option( 'time_format' ),
				'Week Starts On'         => get_option( 'start_of_week' ),
				'Common Library Dir'     => $GLOBALS['tribe-common-info']['dir'],
				'Common Library Version' => $GLOBALS['tribe-common-info']['version'],
			];

if ( $this->rewrite_rules_purged ) {
				$systeminfo['rewrite rules purged'] = esc_html__( 'Rewrite rules were purged on load of this help page. Chances are there is a rewrite rule flush occurring in a plugin or theme!', 'tribe-common' );
			}

/**
			 * Allow for customization of the array of information that's turned into the "System Information" screen in the "Help" admin page.
			 *
			 * @param array $systeminfo The array of information turned into the "System Information" screen.
			 *
			 * @deprecated 4.14.13 Using a newer format of filter.
			 */
			$systeminfo = apply_filters( 'tribe-events-pro-support', $systeminfo );

/**
			 * Allow for customization of the array of information that's turned into the "System Information" screen in the "Help" admin page.
			 *
			 * @since 4.14.13
			 *
			 * @param array $systeminfo The array of information turned into the "System Information" screen.
			 *
			 */
			$systeminfo = apply_filters( 'tec_system_information', $systeminfo );

return $systeminfo;
		}

/**
		 * Render system information into a pretty output
		 *
		 * @return string pretty HTML
		 */
		public function formattedSupportStats() {
			$systeminfo = $this->getSupportStats();
			$output = '';
			$output .= '<dl class="support-stats">';

foreach ( $systeminfo as $k => $v ) {

switch ( $k ) {
					case 'name' :
					case 'email' :
						continue 2;
						break;
					case 'url' :
						$v = sprintf( '<a href="%s">%s</a>', $v, $v );
						break;
				}

if ( is_array( $v ) ) {
					$keys             = array_keys( $v );
					$key              = array_shift( $keys );
					$is_numeric_array = is_numeric( $key );
					unset( $keys );
					unset( $key );
				}

$output .= sprintf( '<dt>%s</dt>', $k );
				if ( empty( $v ) ) {
					$output .= '<dd class="support-stats-null">-</dd>';
				} elseif ( is_bool( $v ) ) {
					$output .= sprintf( '<dd class="support-stats-bool">%s</dd>', esc_html( $v ) );
				} elseif ( is_string( $v ) ) {
					$output .= sprintf( '<dd class="support-stats-string">%s</dd>', esc_html( $v ) );
				} elseif ( is_array( $v ) && $is_numeric_array ) {
					$output .= sprintf( '<dd class="support-stats-array"><ul><li>%s</li></ul></dd>', join( '</li><li>', $v ) );
				} else {
					$formatted_v = [];
					foreach ( $v as $obj_key => $obj_val ) {
						$obj_val = $this->obfuscator->obfuscate( $obj_key, $obj_val );

if ( is_array( $obj_val ) ) {
							$formatted_v[] = sprintf( '<li>%s = <pre>%s</pre></li>', $obj_key, esc_html( print_r( $obj_val, true ) ) );
						} else {
							$obj_val = esc_html( $obj_val );
							$formatted_v[] = sprintf( '<li>%s = %s</li>', $obj_key, $obj_val );
						}
					}
					$v = join( "\n", $formatted_v );
					$output .= sprintf( '<dd class="support-stats-object"><ul>%s</ul></dd>', wp_kses_post( print_r( $v, true ) ) );
				}
			}

$output .= '</dl>';

return $output;
		}

/**
		 * Logs the occurrence of rewrite rule purging
		 */
		public function log_rewrite_rule_purge() {
			$this->rewrite_rules_purged = true;
		}//end log_rewrite_rule_purge

/**
		 * Sets the obfuscator to be used.
		 *
		 * @param Tribe__Support__Obfuscator $obfuscator
		 */
		public function set_obfuscator( Tribe__Support__Obfuscator $obfuscator ) {
			$this->obfuscator = $obfuscator;
		}

/**
		 * Creates Fields in Help Tab to Opt In to System Info
		 *
		 * @return string
		 */
		public static function opt_in() {

$optin_key = ! empty( get_option( self::$option_key ) );

$opt_in = '<input name="tribe_auto_sysinfo_opt_in" id="tribe_auto_sysinfo_opt_in" type="checkbox" value="optin" ' . checked( $optin_key ) . '/><label for="tribe_auto_sysinfo_opt_in">' . esc_html__( 'Yes, automatically share my system information with The Events Calendar\'s support team', 'tribe-common' ) . '</label>';
			$opt_in .= '' . esc_html__( 'Your system information will only be used by The Events Calendar\'s support team. All information is stored securely. We do not share this information with any third parties.', 'tribe-common' ) . '';
			$opt_in .= '';

return $opt_in;
		}

/**
		 * Method to send back sysinfo
		 *
		 * @param array $query The query parameters.
		 *
		 * @return string|void
		 *
		 */
		public static function sysinfo_query( $query ) {

$optin_key = get_option( self::$option_key );

if ( ! $optin_key ) {
				wp_send_json_error( __( 'Invalid Key', 'tribe-common' ) );
			}

$key = (string) ( $query['key'] ?? '' );
			if ( $key !== $optin_key ) {
				wp_send_json_error( __( 'Invalid Key', 'tribe-common' ) );
			}

$support    = Tribe__Support::getInstance();
			$systeminfo = $support->formattedSupportStats();

return $systeminfo;
		}

/*
		 * Create Unique Endpoint Per Site
		 */
		public static function create_sysinfo_endpoint() {
			$optin_key = get_option( self::$option_key );
			if ( $optin_key ) {
				register_rest_route(
					'tribe_events/v2',
					'/(?P<key>[a-z0-9\-]+)/sysinfo/',
					[
						'methods' => 'GET',
						'callback' => [ 'Tribe__Support', 'sysinfo_query' ],
						'permission_callback' => '__return_true',
					]
				);
			}
		}

/**
		 * Ajax Method to Create Unique Key and send to tec.com
		 */
		public static function ajax_sysinfo_optin() {

if ( ! isset( $_POST['confirm'] ) || ! wp_verify_nonce( $_POST['confirm'], 'sysinfo_optin_nonce' ) || ! current_user_can( 'manage_options' ) ) {
				wp_send_json_error( __( 'Permission Error', 'tribe-common' ) );
			}

if ( 'generate' == $_POST['generate_key'] ) {
				$random    = base_convert( rand( 0, getrandmax() ), 10, 36 );
				$optin_key = hash( 'sha1', $random );

update_option( self::$option_key, $optin_key );

//Only Connect If a License Exists
				$keys = apply_filters( 'tribe-pue-install-keys', [] );
				if ( is_array( $keys ) && ! empty( $keys ) ) {
					self::send_sysinfo_key( $optin_key );
				} else {
					wp_send_json_success( __( 'Unique System Info Key Generated', 'tribe-common' ) );
				}

} elseif ( 'remove' == $_POST['generate_key'] ) {
				$optin_key = get_option( self::$option_key );

delete_option( self::$option_key );

self::send_sysinfo_key( $optin_key, null, 'remove' );

}

wp_send_json_error( __( 'Permission Error', 'tribe-common' ) );
		}

/**
		 * Contact Tribe Website to Add SysInfo Key
		 *
		 * @param null $optin_key provide key for system info
		 * @param null $url domain of current site
		 * @param null $remove string used if removing $optin_key from tec.com
		 * @param null $pueadd boolean to disable messaging when coming from pue script
		 */
		public static function send_sysinfo_key( $optin_key = null, $url = null, $remove = null, $pueadd = false ) {
			$url        = $url ? $url : urlencode( str_replace( [ 'http://', 'https://' ], '', get_site_url() ) );
			$teccom_url = defined( 'TEC_URL' ) ? TEC_URL : 'https://theeventscalendar.com';
			$query      = trailingslashit( $teccom_url ) . 'wp-json/tribe_system/v2/customer-info/' . $optin_key . '/' . $url;

if ( $remove ) {
				$query .= '?status=remove';
			}

$response = wp_remote_get( esc_url( $query ) );

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

if ( ! $pueadd ) {
				// make sure the response came back okay
				if ( ! isset( $response->success ) ) {
					//on error delete the key
					delete_option( self::$option_key );

//send error response
					wp_send_json_error( $response );
				}

wp_send_json_success( $response->data );
			}
		}

/****************** SINGLETON GUTS ******************/

/**
		 * Enforce Singleton Pattern
		 */
		private static $instance;

public static function getInstance() {
			if ( null == self::$instance ) {
				$instance = new self;
				$instance->set_obfuscator( new Tribe__Support__Obfuscator( $instance->must_obfuscate_prefixes ) );
				self::$instance = $instance;
			}

return self::$instance;
		}
	}

}

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