first commit

wp-content/plugins/mailchimp-for-wp/includes/admin/class-usage-tracking.php

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+<?php
+
+/**
+ * Class MC4WP_Usage_Tracking
+ *
+ * @access private
+ * @since 2.3
+ * @ignore
+ */
+class MC4WP_Usage_Tracking {
+
+
+	/**
+	 * @var string
+	 */
+	protected $tracking_url = 'https://www.mc4wp.com/api/usage-tracking';
+
+	/**
+	 * @var MC4WP_Usage_Tracking The One True Instance
+	 */
+	protected static $instance;
+
+	/**
+	 * @return MC4WP_Usage_Tracking
+	 */
+	public static function instance() {
+		if ( ! self::$instance instanceof MC4WP_Usage_Tracking ) {
+			self::$instance = new MC4WP_Usage_Tracking();
+		}
+
+		return self::$instance;
+	}
+
+	/**
+	 * Add hooks
+	 */
+	public function add_hooks() {
+		add_action( 'mc4wp_usage_tracking', array( $this, 'track' ) );
+		add_filter( 'cron_schedules', array( $this, 'cron_schedules' ) );
+	}
+
+	/**
+	 * Registers a new schedule with WP Cron
+	 *
+	 * @param array $schedules
+	 *
+	 * @return array
+	 */
+	public function cron_schedules( $schedules ) {
+		$schedules['monthly'] = array(
+			'interval' => 30 * DAY_IN_SECONDS,
+			'display'  => esc_html__( 'Once a month', 'mailchimp-for-wp' ),
+		);
+		return $schedules;
+	}
+
+	/**
+	 * Enable usage tracking
+	 *
+	 * @return bool
+	 */
+	public function enable() {
+		// only schedule if not yet scheduled
+		if ( ! wp_next_scheduled( 'mc4wp_usage_tracking' ) ) {
+			return wp_schedule_event( time(), 'monthly', 'mc4wp_usage_tracking' );
+		}
+
+		return true;
+	}
+
+	/**
+	 * Disable usage tracking
+	 */
+	public function disable() {
+		wp_clear_scheduled_hook( 'mc4wp_usage_tracking' );
+	}
+
+	/**
+	 * Toggle tracking (clears & sets the scheduled tracking event)
+	 *
+	 * @param bool $enable
+	 */
+	public function toggle( $enable ) {
+		$enable ? $this->enable() : $this->disable();
+	}
+
+	/**
+	 * Sends the tracking request. Non-blocking.
+	 *
+	 * @return bool
+	 */
+	public function track() {
+		$data = $this->get_tracking_data();
+
+		// send non-blocking request and be done with it
+		wp_remote_post(
+			$this->tracking_url,
+			array(
+				'body'     => json_encode( $data ),
+				'headers'  => array(
+					'Content-Type' => 'application/json',
+					'Accept'       => 'application/json',
+				),
+				'blocking' => false,
+			)
+		);
+
+		return true;
+	}
+
+	/**
+	 * @return array
+	 */
+	protected function get_tracking_data() {
+		$data = array(
+			// use md5 hash of home_url, we don't need/want to know the actual site url
+			'site'                      => md5( home_url() ),
+			'number_of_mailchimp_lists' => $this->get_mailchimp_lists_count(),
+			'mc4wp_version'             => $this->get_mc4wp_version(),
+			'mc4wp_premium_version'     => $this->get_mc4wp_premium_version(),
+			'plugins'                   => (array) get_option( 'active_plugins', array() ),
+			'php_version'               => $this->get_php_version(),
+			'curl_version'              => $this->get_curl_version(),
+			'wp_version'                => $GLOBALS['wp_version'],
+			'wp_language'               => get_locale(),
+			'server_software'           => $this->get_server_software(),
+			'using_https'               => $this->is_site_using_https(),
+		);
+
+		return $data;
+	}
+
+	public function get_php_version() {
+		if ( ! defined( 'PHP_MAJOR_VERSION' ) ) { // defined since PHP 5.2.7
+			return null;
+		}
+
+		return PHP_MAJOR_VERSION . '.' . PHP_MINOR_VERSION;
+	}
+
+	/**
+	 * @return string
+	 */
+	public function get_mc4wp_premium_version() {
+		return defined( 'MC4WP_PREMIUM_VERSION' ) ? MC4WP_PREMIUM_VERSION : null;
+	}
+
+	/**
+	 * Returns the Mailchimp for WordPress version
+	 *
+	 * @return string
+	 */
+	protected function get_mc4wp_version() {
+		return MC4WP_VERSION;
+	}
+
+	/**
+	 * @return int
+	 */
+	protected function get_mailchimp_lists_count() {
+		$mailchimp = new MC4WP_MailChimp();
+		return count( $mailchimp->get_lists() );
+	}
+
+	/**
+	 * @return string
+	 */
+	protected function get_curl_version() {
+		if ( ! function_exists( 'curl_version' ) ) {
+			return null;
+		}
+
+		$curl_version_info = curl_version();
+		return $curl_version_info['version'];
+	}
+
+	/**
+	 * @return bool
+	 */
+	protected function is_site_using_https() {
+		$site_url = site_url();
+		return stripos( $site_url, 'https' ) === 0;
+	}
+
+	/**
+	 * @return string
+	 */
+	protected function get_server_software() {
+		if ( ! isset( $_SERVER['SERVER_SOFTWARE'] ) ) {
+			return null;
+		}
+
+		return $_SERVER['SERVER_SOFTWARE'];
+	}
+}