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<?php
/**
* Automate the screenshot process for end users seeking support.
*
* @package Health Check
*/
// Make sure the file is not directly accessible.
if ( ! defined( 'ABSPATH' ) ) {
die( 'We\'re sorry, but you can not directly access this file.' );
}
/**
* Class Health_Check_Screenshots
*/
class Health_Check_Screenshots {
private $allowed_image_mimes = array(
'image/jpeg',
);
private $should_404 = false;
public function __construct() {
$feature_status = get_option( 'health-check-beta-features', false );
if ( $feature_status ) {
add_action( 'admin_init', array( $this, 'delete_screenshot' ) );
add_action( 'init', array( $this, 'display_screenshot' ), 0 );
add_action( 'init', array( $this, 'register_post_type' ) );
add_action( 'rest_api_init', array( $this, 'register_rest_routes' ) );
add_action( 'admin_bar_menu', array( $this, 'admin_menubar_button' ), 999 );
add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) );
add_filter( 'site_health_navigation_tabs', array( $this, 'add_site_health_navigation_tabs' ), 20 );
add_action( 'site_health_tab_content', array( $this, 'add_site_health_tab_content' ) );
add_action( 'wp', array( $this, 'maybe_404' ) );
}
}
public function maybe_404() {
if ( ! $this->should_404 ) {
return;
}
global $wp_query;
$wp_query->set_404();
status_header( 404 );
nocache_headers();
}
public function delete_screenshot() {
if ( ! is_admin() || ! isset( $_GET['health-check-delete-screenshot'] ) || ! $this->user_can_screenshot() ) {
return;
}
// Validate nonces.
if ( ! isset( $_GET['_wpnonce'] ) ) {
return;
}
if ( ! wp_verify_nonce( $_GET['_wpnonce'], 'health-check-delete-screenshot-' . absint( $_GET['health-check-delete-screenshot'] ) ) ) {
return;
}
wp_delete_post( $_GET['health-check-delete-screenshot'], true );
wp_safe_redirect( admin_url( 'site-health.php?tab=screenshots' ) );
}
public function display_screenshot() {
if ( empty( $_GET['health-check-screenshot'] ) ) {
return;
}
$screenshot_id = $_GET['health-check-screenshot'];
$screenshot = get_posts(
array(
'post_type' => 'health-check-images',
'posts_per_page' => 1,
'meta_key' => 'hash_id',
'meta_value' => $screenshot_id,
)
);
if ( empty( $screenshot ) ) {
$this->should_404 = true;
return;
}
if ( is_array( $screenshot ) ) {
$screenshot = $screenshot[0];
}
$image = $screenshot->screenshot;
$image = explode( ';', $image, 2 );
$image_type = str_replace( 'data:', '', $image[0] );
if ( ! in_array( $image_type, $this->allowed_image_mimes, true ) ) {
return;
}
header( 'Content-Type: ' . $image_type );
if ( isset( $_GET['dl'] ) ) {
header( 'Content-Disposition: attachment; filename="' . sanitize_title( $screenshot->post_title ) . '.jpeg"' );
}
$data = str_replace( 'base64,', '', $image[1] );
echo base64_decode( $data );
die();
}
public function add_site_health_tab_content( $tab ) {
if ( 'screenshots' !== $tab ) {
return;
}
include_once( HEALTH_CHECK_PLUGIN_DIRECTORY . '/pages/screenshots.php' );
}
public function add_site_health_navigation_tabs( $tabs ) {
return array_merge(
$tabs,
array(
'screenshots' => esc_html__( 'Screenshots', 'health-check' ),
)
);
}
public function user_can_screenshot() {
return current_user_can( 'view_site_health_checks' );
}
public function register_post_type() {
register_post_type(
'health-check-images',
array(
'labels' => array(
'name' => __( 'Screenshots', 'health-check' ),
'singular_name' => __( 'Screenshot', 'health-check' ),
),
'public' => false,
'show_ui' => false,
'show_in_menu' => false,
'show_in_nav_menus' => false,
'show_in_admin_bar' => false,
'exclude_from_search' => true,
'has_archive' => false,
'hierarchical' => false,
'rewrite' => false,
'query_var' => false,
'supports' => array( 'title' ),
)
);
}
public function register_rest_routes() {
register_rest_route(
'health-check/v1',
'/screenshot',
array(
'methods' => 'POST',
'callback' => array( $this, 'store_screenshot' ),
'permission_callback' => array( $this, 'user_can_screenshot' ),
'args' => array(
'nonce' => array(
'required' => true,
'validate_callback' => function( $param, $request, $key ) {
return wp_verify_nonce( $param, 'health-check-screenshot' );
},
),
'label' => array(
'required' => true,
'validate_callback' => function( $param, $request, $key ) {
return is_string( $param ) && ! empty( $param );
},
),
'screenshot' => array(
'required' => true,
'validate_callback' => function( $param, $request, $key ) {
return is_string( $param ) && 'data:image/jpeg;' === substr( $param, 0, 16 );
},
),
),
)
);
}
public function store_screenshot( \WP_REST_Request $request ) {
// Create a new post in the `health-check-images` post type.
$post_id = wp_insert_post(
array(
'post_type' => 'health-check-images',
'post_title' => sanitize_text_field( $request->get_param( 'label' ) ),
'post_status' => 'publish',
'meta_input' => array(
'screenshot' => $request->get_param( 'screenshot' ),
'hash_id' => wp_hash( $request->get_param( 'screenshot' ) ),
),
)
);
}
public function enqueue_scripts() {
if ( ! $this->user_can_screenshot() ) {
return;
}
$asset = include HEALTH_CHECK_PLUGIN_DIRECTORY . 'build/health-check-global.asset.php';
wp_enqueue_script( 'health-check-global', trailingslashit( HEALTH_CHECK_PLUGIN_URL ) . 'build/health-check-global.js', array( 'jquery', 'wp-a11y' ), $asset['version'] );
wp_localize_script(
'health-check-global',
'HealthCheckTools',
array(
'nonce' => array(
'rest' => wp_create_nonce( 'wp_rest' ),
'screenshot' => wp_create_nonce( 'health-check-screenshot' ),
),
'rest' => array(
'screenshot' => rest_url( 'health-check/v1/screenshot' ),
),
)
);
}
public function admin_menubar_button( $wp_menu ) {
if ( ! $this->user_can_screenshot() ) {
return;
}
if ( ! is_admin() ) {
require_once( trailingslashit( ABSPATH ) . 'wp-admin/includes/plugin.php' );
}
// Add top-level menu item.
$wp_menu->add_menu(
array(
'id' => 'health-check-screenshot',
'title' => esc_html__( 'Take screenshot', 'health-check' ),
'href' => '#',
'meta' => array(
'class' => 'health-check-take-screenshot',
),
)
);
}
}
new Health_Check_Screenshots();