module.php
122 lines
| 1 | <?php |
| 2 | |
| 3 | |
| 4 | namespace JFB_Modules\Security\Wp_Nonce; |
| 5 | |
| 6 | use JFB_Components\Module\Base_Module_It; |
| 7 | use JFB_Modules\Security\Exceptions\Spam_Exception; |
| 8 | |
| 9 | // If this file is called directly, abort. |
| 10 | if ( ! defined( 'WPINC' ) ) { |
| 11 | die; |
| 12 | } |
| 13 | |
| 14 | class Module implements Base_Module_It { |
| 15 | |
| 16 | const KEY = '_wpnonce'; |
| 17 | const NONCE_ACTION_PREF = 'jet-form-builder-wp-nonce-'; |
| 18 | const SPAM_EXCEPTION = 'nonce_failed'; |
| 19 | |
| 20 | public function __construct() { |
| 21 | add_filter( 'jet-form-builder/security/spam-statuses', array( $this, 'add_spam_statuses' ) ); |
| 22 | } |
| 23 | public function add_spam_statuses( $statuses ) { |
| 24 | $statuses[] = self::SPAM_EXCEPTION; |
| 25 | return $statuses; |
| 26 | } |
| 27 | |
| 28 | public function rep_item_id() { |
| 29 | return 'wp-nonce'; |
| 30 | } |
| 31 | |
| 32 | public function condition(): bool { |
| 33 | return true; |
| 34 | } |
| 35 | |
| 36 | public function init_hooks() { |
| 37 | add_filter( |
| 38 | 'jet-form-builder/request-handler/request', |
| 39 | array( $this, 'handle_request' ) |
| 40 | ); |
| 41 | add_filter( |
| 42 | 'jet-form-builder/message-types', |
| 43 | array( $this, 'handle_messages' ) |
| 44 | ); |
| 45 | add_filter( |
| 46 | 'jet-form-builder/after-start-form', |
| 47 | array( $this, 'on_render_form' ) |
| 48 | ); |
| 49 | } |
| 50 | |
| 51 | public function remove_hooks() { |
| 52 | remove_filter( |
| 53 | 'jet-form-builder/request-handler/request', |
| 54 | array( $this, 'handle_request' ) |
| 55 | ); |
| 56 | remove_filter( |
| 57 | 'jet-form-builder/message-types', |
| 58 | array( $this, 'handle_messages' ) |
| 59 | ); |
| 60 | remove_filter( |
| 61 | 'jet-form-builder/after-start-form', |
| 62 | array( $this, 'on_render_form' ) |
| 63 | ); |
| 64 | } |
| 65 | |
| 66 | public function on_render_form( string $html ): string { |
| 67 | if ( ! jet_fb_live_args()->is_use_nonce() ) { |
| 68 | return $html; |
| 69 | } |
| 70 | |
| 71 | return ( $html . $this->get_nonce_field() ); |
| 72 | } |
| 73 | |
| 74 | public function get_nonce_id(): string { |
| 75 | $form_id = jet_fb_live()->form_id; |
| 76 | |
| 77 | return self::NONCE_ACTION_PREF . $form_id; |
| 78 | } |
| 79 | |
| 80 | public function get_nonce_field(): string { |
| 81 | $form_id = jet_fb_live()->form_id; |
| 82 | $field_id = self::KEY . '_' . $form_id; |
| 83 | return sprintf( |
| 84 | '<input type="hidden" id="%1$s" name="%2$s" value="%3$s" />', |
| 85 | esc_attr( $field_id ), |
| 86 | esc_attr( self::KEY ), |
| 87 | esc_attr( wp_create_nonce( $this->get_nonce_id() ) ) |
| 88 | ) . wp_referer_field( false ); |
| 89 | } |
| 90 | |
| 91 | public function verify( $nonce ): bool { |
| 92 | return ( ! jet_fb_live_args()->is_use_nonce() || wp_verify_nonce( $nonce, $this->get_nonce_id() ) ); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @param array $request |
| 97 | * |
| 98 | * @return array |
| 99 | * @throws Spam_Exception |
| 100 | */ |
| 101 | public function handle_request( array $request ): array { |
| 102 | $nonce = $request[ self::KEY ] ?? ''; |
| 103 | |
| 104 | if ( ! $this->verify( $nonce ) ) { |
| 105 | // phpcs:ignore WordPress.Security.EscapeOutput.ExceptionNotEscaped |
| 106 | throw new Spam_Exception( self::SPAM_EXCEPTION ); |
| 107 | } |
| 108 | |
| 109 | return $request; |
| 110 | } |
| 111 | |
| 112 | public function handle_messages( array $messages ): array { |
| 113 | $messages[ self::SPAM_EXCEPTION ] = array( |
| 114 | 'label' => __( 'WP nonce validation failed', 'jet-form-builder' ), |
| 115 | 'value' => __( 'Invalid nonce', 'jet-form-builder' ), |
| 116 | ); |
| 117 | |
| 118 | return $messages; |
| 119 | } |
| 120 | |
| 121 | } |
| 122 |