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<?php
/**
* @package Tawk.to Widget for WordPress
* @copyright (C) 2014- Tawk.to
* @license GNU/GPLv3 http://www.gnu.org/licenses/gpl-3.0.html
* Plugin Name: Tawk.to Live Chat
* Plugin URI: https://www.tawk.to
* Description: Embeds Tawk.to live chat widget to your site
* Version: 0.8.2
* Author: Tawkto
* Text Domain: tawk-to-live-chat
**/
require_once dirname( __FILE__ ) . '/vendor/autoload.php';
require_once dirname( __FILE__ ) . '/upgrade.manager.php';
use Tawk\Modules\UrlPatternMatcher;
if ( ! class_exists( 'TawkTo_Settings' ) ) {
/**
* Admin settings module for the tawk.to plugin
*/
class TawkTo_Settings {
const TAWK_WIDGET_ID_VARIABLE = 'tawkto-embed-widget-widget-id';
const TAWK_PAGE_ID_VARIABLE = 'tawkto-embed-widget-page-id';
const TAWK_VISIBILITY_OPTIONS = 'tawkto-visibility-options';
const TAWK_ACTION_SET_WIDGET = 'tawkto-set-widget';
const TAWK_ACTION_REMOVE_WIDGET = 'tawkto-remove-widget';
/**
* __construct
*
* @return void
*/
public function __construct() {
if ( ! get_option( 'tawkto-visibility-options', false ) ) {
$visibility = array(
'always_display' => 1,
'show_onfrontpage' => 0,
'show_oncategory' => 0,
'show_ontagpage' => 0,
'show_onarticlepages' => 0,
'exclude_url' => 0,
'excluded_url_list' => '',
'include_url' => 0,
'included_url_list' => '',
'display_on_shop' => 0,
'display_on_productcategory' => 0,
'display_on_productpage' => 0,
'display_on_producttag' => 0,
'enable_visitor_recognition' => 1,
);
update_option( 'tawkto-visibility-options', $visibility );
}
add_action( 'admin_init', array( &$this, 'admin_init' ) );
add_action( 'admin_menu', array( &$this, 'add_menu' ) );
add_action( 'wp_ajax_tawkto_setwidget', array( &$this, 'action_setwidget' ) );
add_action( 'wp_ajax_tawkto_removewidget', array( &$this, 'action_removewidget' ) );
add_action( 'admin_enqueue_scripts', array( $this, 'tawk_settings_assets' ) );
add_action( 'admin_notices', array( $this, 'tawk_admin_notice' ) );
if ( is_admin() ) {
if ( false === function_exists( 'get_plugin_data' ) ) {
require_once ABSPATH . 'wp-admin/includes/plugin.php';
}
$plugin_data = get_plugin_data( __FILE__ );
$this->plugin_ver = $plugin_data['Version'];
}
}
/**
* Retrieves tawk.to admin settings assets
*
* @param string $hook - hook name.
* @return void
*/
public function tawk_settings_assets( $hook ) {
if ( 'settings_page_tawkto_plugin' !== $hook ) {
return;
}
wp_register_style(
'tawk_admin_style',
plugins_url( 'assets/css/tawk.admin.css', __FILE__ ),
array(),
$this->plugin_ver
);
wp_enqueue_style( 'tawk_admin_style' );
wp_enqueue_script(
'tawk_admin_script',
plugins_url( 'assets/js/tawk.admin.js', __FILE__ ),
array(),
$this->plugin_ver,
true
);
}
/**
* Initialize plugin settings
*
* @return void
*/
public function admin_init() {
register_setting( 'tawk_options', 'tawkto-visibility-options', array( &$this, 'validate_options' ) );
}
/**
* Saves the selected property and widget to the database.
*/
public function action_setwidget() {
header( 'Content-Type: application/json' );
if ( false === wp_is_json_request() ) {
$response['success'] = false;
$response['message'] = 'Invalid request';
wp_send_json( $response );
wp_die();
};
$post_data = json_decode( file_get_contents( 'php://input' ), true );
$response = array(
'success' => true,
);
if ( false === $this->validate_request_auth( self::TAWK_ACTION_SET_WIDGET, $post_data ) ) {
$response['success'] = false;
$response['message'] = 'Unauthorized';
wp_send_json( $response );
wp_die();
};
if ( ! isset( $post_data['pageId'] ) || ! isset( $post_data['widgetId'] ) ) {
$response['success'] = false;
wp_send_json( $response );
wp_die();
}
if ( ! self::ids_are_correct( $post_data['pageId'], $post_data['widgetId'] ) ) {
$response['success'] = false;
wp_send_json( $response );
wp_die();
}
update_option( self::TAWK_PAGE_ID_VARIABLE, $post_data['pageId'] );
update_option( self::TAWK_WIDGET_ID_VARIABLE, $post_data['widgetId'] );
wp_send_json( $response );
wp_die();
}
/**
* Plugin notice for tawk.to
*/
public function tawk_admin_notice() {
$settings_updated = filter_input( INPUT_GET, 'settings-updated', FILTER_VALIDATE_BOOLEAN );
if ( true === $settings_updated ) {
?>
<div class="notice notice-warning is-dismissible">
<p><?php esc_html_e( 'You might need to clear cache if you are using a cache plugin to see your updates', 'tawk-to-live-chat' ); ?></p>
</div>
<?php
}
}
/**
* Removes the selected property and widget from the database.
*/
public function action_removewidget() {
header( 'Content-Type: application/json' );
if ( false === wp_is_json_request() ) {
$response['success'] = false;
$response['message'] = 'Invalid request';
wp_send_json( $response );
wp_die();
};
$post_data = json_decode( file_get_contents( 'php://input' ), true );
$response = array(
'success' => true,
);
if ( false === $this->validate_request_auth( self::TAWK_ACTION_REMOVE_WIDGET, $post_data ) ) {
$response['success'] = false;
$response['message'] = 'Unauthorized';
wp_send_json( $response );
wp_die();
};
update_option( self::TAWK_PAGE_ID_VARIABLE, '' );
update_option( self::TAWK_WIDGET_ID_VARIABLE, '' );
wp_send_json( $response );
wp_die();
}
/**
* Validates action requests auth
*
* @param string $action - Action to be done.
* @param array $post_data - Parsed JSON payload for the action.
* @return boolean
*/
private function validate_request_auth( $action, $post_data = array() ) {
if ( false === current_user_can( 'administrator' ) ) {
return false;
}
if ( false === isset( $post_data['nonce'] ) ) {
return false;
}
if ( false === wp_verify_nonce( $post_data['nonce'], $action ) ) {
return false;
}
return true;
}
/**
* Validates the selected visibility options
*
* @param array $input - Visibility option fields.
* @return boolean
*/
public function validate_options( $input ) {
$visibility_toggle_fields = array(
'always_display',
'show_onfrontpage',
'show_oncategory',
'show_ontagpage',
'show_onarticlepages',
'exclude_url',
'include_url',
'display_on_shop',
'display_on_productcategory',
'display_on_productpage',
'display_on_producttag',
'enable_visitor_recognition',
);
$visibility_text_fields = array(
'excluded_url_list',
'included_url_list',
);
self::validate_visibility_toggle_fields( $input, $visibility_toggle_fields );
self::validate_text_fields( $input, $visibility_text_fields );
return $input;
}
/**
* Adds the tawk.to plugin settings in the admin menu.
*/
public function add_menu() {
add_options_page(
__( 'Tawk.to Settings', 'tawk-to-live-chat' ),
__( 'Tawk.to', 'tawk-to-live-chat' ),
'manage_options',
'tawkto_plugin',
array( &$this, 'create_plugin_settings_page' )
);
}
/**
* Initializes the plugin settings page.
*/
public function create_plugin_settings_page() {
global $wpdb;
if ( ! current_user_can( 'manage_options' ) ) {
wp_die( esc_html_e( 'You do not have sufficient permissions to access this page.' ) );
}
$page_id = get_option( self::TAWK_PAGE_ID_VARIABLE );
$widget_id = get_option( self::TAWK_WIDGET_ID_VARIABLE );
$base_url = 'https://plugins.tawk.to';
$iframe_url = $base_url . '/generic/widgets'
. '?currentWidgetId=' . $widget_id
. '¤tPageId=' . $page_id
. '&transparentBackground=1'
. '&pltf=WordPress';
$set_widget_nonce = wp_create_nonce( self::TAWK_ACTION_SET_WIDGET );
$remove_widget_nonce = wp_create_nonce( self::TAWK_ACTION_REMOVE_WIDGET );
$plugin_ver = $this->plugin_ver;
include sprintf( '%s/templates/settings.php', dirname( __FILE__ ) );
}
/**
* Verifies if the provided property and widget ids are correct.
*
* @param string $page_id - Property Id.
* @param string $widget_id - Widget Id.
* @return boolean
*/
public static function ids_are_correct( $page_id, $widget_id ) {
return 1 === preg_match( '/^[0-9A-Fa-f]{24}$/', $page_id ) && 1 === preg_match( '/^[a-z0-9]{1,50}$/i', $widget_id );
}
/**
* Validates and sanitizes text fields
*
* @param array $fields - List of fields.
* @param array $field_names - List of field names to be validated.
* @return void
*/
private static function validate_text_fields( &$fields, $field_names ) {
foreach ( $field_names as $field_name ) {
if ( isset( $fields[ $field_name ] ) ) {
$fields[ $field_name ] = sanitize_text_field( $fields[ $field_name ] );
continue;
}
$fields[ $field_name ] = '';
}
}
/**
* Validates and sanitizes visibility toggle fields
*
* @param array $fields - List of fields.
* @param array $field_names - List of field names to be validated.
* @return void
*/
private static function validate_visibility_toggle_fields( &$fields, $field_names ) {
foreach ( $field_names as $field_name ) {
if ( isset( $fields[ $field_name ] ) && '1' === $fields[ $field_name ] ) {
$fields[ $field_name ] = 1;
continue;
}
$fields[ $field_name ] = 0;
}
}
}
}
if ( ! class_exists( 'TawkTo' ) ) {
$plugin_file_data = get_file_data(
__FILE__,
array(
'Version' => 'Version',
),
'plugin'
);
/**
* Main tawk.to module
*/
class TawkTo {
const PLUGIN_VERSION_VARIABLE = 'tawkto-version';
/**
* @var $plugin_version Plugin version
*/
private static $plugin_version;
/**
* __construct
*
* @return void
*/
public function __construct() {
$tawkto_settings = new TawkTo_Settings();
add_shortcode( 'tawkto', array( $this, 'shortcode_print_embed_code' ) );
}
/**
* Retrieves plugin version
*
* @return string plugin version
*/
public static function get_plugin_version() {
if ( false === isset( self::$plugin_version ) ) {
$plugin_file_data = get_file_data(
__FILE__,
array(
'Version' => 'Version',
),
'plugin'
);
self::$plugin_version = $plugin_file_data['Version'];
}
return self::$plugin_version;
}
/**
* Initializes plugin data on activation.
*/
public static function activate() {
global $plugin_file_data;
$visibility = array(
'always_display' => 1,
'show_onfrontpage' => 0,
'show_oncategory' => 0,
'show_ontagpage' => 0,
'show_onarticlepages' => 0,
'exclude_url' => 0,
'excluded_url_list' => '',
'include_url' => 0,
'included_url_list' => '',
'display_on_shop' => 0,
'display_on_productcategory' => 0,
'display_on_productpage' => 0,
'display_on_producttag' => 0,
'enable_visitor_recognition' => 1,
);
add_option( TawkTo_Settings::TAWK_PAGE_ID_VARIABLE, '', '', 'yes' );
add_option( TawkTo_Settings::TAWK_WIDGET_ID_VARIABLE, '', '', 'yes' );
add_option( TawkTo_Settings::TAWK_VISIBILITY_OPTIONS, $visibility, '', 'yes' );
add_option( self::PLUGIN_VERSION_VARIABLE, self::get_plugin_version(), '', 'yes' );
}
/**
* Cleans up plugin data on deactivation
*/
public static function deactivate() {
delete_option( TawkTo_Settings::TAWK_PAGE_ID_VARIABLE );
delete_option( TawkTo_Settings::TAWK_WIDGET_ID_VARIABLE );
delete_option( TawkTo_Settings::TAWK_VISIBILITY_OPTIONS );
delete_option( self::PLUGIN_VERSION_VARIABLE );
}
/**
* Shortcode for tawk.to to inject the embed code.
*/
public function shortcode_print_embed_code() {
add_action( 'wp_footer', array( $this, 'embed_code' ), 100 );
}
/**
* Retrieves customer details
*
* @return array - Customer details
*/
public function get_current_customer_details() {
if ( is_user_logged_in() ) {
$current_user = wp_get_current_user();
$user_info = array(
'name' => $current_user->display_name,
'email' => $current_user->user_email,
);
return wp_json_encode( $user_info );
}
return null;
}
/**
* Creates the embed code
*/
public function embed_code() {
$page_id = get_option( 'tawkto-embed-widget-page-id' );
$widget_id = get_option( 'tawkto-embed-widget-widget-id' );
$visibility = get_option( 'tawkto-visibility-options' );
// default value.
$enable_visitor_recognition = true;
if ( isset( $visibility ) && isset( $visibility['enable_visitor_recognition'] ) ) {
$enable_visitor_recognition = 1 === $visibility['enable_visitor_recognition'];
}
if ( $enable_visitor_recognition ) {
$customer_details = $this->get_current_customer_details();
}
if ( ! empty( $page_id ) && ! empty( $widget_id ) ) {
include sprintf( '%s/templates/widget.php', dirname( __FILE__ ) );
}
}
/**
* Retrieves current URL
*
* @return string
*/
private function get_current_url() {
$http_host = '';
$request_uri = '';
// sanitize and remove backslashes.
if ( true === isset( $_SERVER['HTTP_HOST'] ) ) {
$http_host = sanitize_text_field( wp_unslash( $_SERVER['HTTP_HOST'] ) );
}
if ( true === isset( $_SERVER['REQUEST_URI'] ) ) {
$request_uri = sanitize_text_field( wp_unslash( $_SERVER['REQUEST_URI'] ) );
}
$current_url = urldecode( $http_host . $request_uri );
$protocol = ( ! empty( $_SERVER['HTTPS'] ) && 'on' === $_SERVER['HTTPS'] ) ? 'https://' : 'http://';
return strtolower( $protocol . $current_url );
}
/**
* Prints the embed code when it is allowed to be displayed.
*
* @return void
*/
public function print_embed_code() {
$vsibility = get_option( 'tawkto-visibility-options' );
$display = false;
if ( 1 === $vsibility['always_display'] ) {
$display = true;
}
if ( ( 1 === $vsibility['show_onfrontpage'] ) && ( is_home() || is_front_page() ) ) {
$display = true;
}
if ( ( 1 === $vsibility['show_oncategory'] ) && is_category() ) {
$display = true;
}
if ( ( 1 === $vsibility['show_ontagpage'] ) && is_tag() ) {
$display = true;
}
if ( ( 1 === $vsibility['show_onarticlepages'] ) && is_single() ) {
$display = true;
}
if ( in_array( 'woocommerce/woocommerce.php', apply_filters( 'active_plugins', get_option( 'active_plugins' ) ), true ) ) {
if ( ( 1 === $vsibility['display_on_shop'] ) && is_shop() ) {
$display = true;
}
if ( ( 1 === $vsibility['display_on_productcategory'] ) && is_product_category() ) {
$display = true;
}
if ( ( 1 === $vsibility['display_on_productpage'] ) && is_product() ) {
$display = true;
}
if ( ( 1 === $vsibility['display_on_producttag'] ) && is_product_tag() ) {
$display = true;
}
}
if ( isset( $vsibility['include_url'] ) && 1 === $vsibility['include_url'] ) {
$current_url = $this->get_current_url();
$included_url_list = $vsibility['included_url_list'];
$included_url_list = array_map( 'trim', preg_split( '/,/', $included_url_list ) );
if ( UrlPatternMatcher::match( $current_url, $included_url_list ) ) {
$display = true;
}
}
if ( isset( $vsibility['exclude_url'] ) && ( 1 === $vsibility['exclude_url'] ) ) {
$current_url = $this->get_current_url();
$excluded_url_list = $vsibility['excluded_url_list'];
$excluded_url_list = array_map( 'trim', preg_split( '/,/', $excluded_url_list ) );
if ( UrlPatternMatcher::match( $current_url, $excluded_url_list ) ) {
$display = false;
};
}
if ( $display ) {
$this->embed_code();
}
}
/**
* Migrate old tawk to embed code to new version.
*
* Old version contained embed code script, from that
* markup we need only page id and widget id
*/
public function migrate_embed_code() {
$old_tawkto_embed_code = get_option( 'tawkto-embed-code' );
if ( empty( $old_tawkto_embed_code ) ) {
return;
}
$matches = array();
preg_match( '/https:\/\/embed.tawk.to\/([0-9A-Fa-f]{24})\/([a-z0-9]{1,50})/', $old_tawkto_embed_code, $matches );
if ( isset( $matches[1] ) && isset( $matches[2] ) && TawkTo_Settings::ids_are_correct( $matches[1], $matches[2] ) ) {
update_option( TawkTo_Settings::TAWK_PAGE_ID_VARIABLE, $matches[1] );
update_option( TawkTo_Settings::TAWK_WIDGET_ID_VARIABLE, $matches[2] );
}
delete_option( 'tawkto-embed-code' );
}
}
}
if ( class_exists( 'TawkTo' ) ) {
register_activation_hook( __FILE__, array( 'TawkTo', 'activate' ) );
register_deactivation_hook( __FILE__, array( 'TawkTo', 'deactivate' ) );
$tawkto = new TawkTo();
$upgrade_manager = new TawkToUpgradeManager(
TawkTo::get_plugin_version(),
TawkTo::PLUGIN_VERSION_VARIABLE
);
$upgrade_manager->register_hooks();
if ( isset( $tawkto ) ) {
// these are called every page load.
$tawkto->migrate_embed_code();
/**
* Adds plugin settings link
*
* @param array $links - List of links from WordPress admin.
* @return array Updated list of links
*/
function tawkto_plugin_settings_link( $links ) {
$settings_link = '<a href="options-general.php?page=tawkto_plugin">Settings</a>';
array_unshift( $links, $settings_link );
return $links;
}
$plugin_base_name = plugin_basename( __FILE__ );
add_filter( 'plugin_action_links_' . $plugin_base_name, 'tawkto_plugin_settings_link' );
}
add_action( 'wp_footer', array( $tawkto, 'print_embed_code' ) );
}
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