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<?php /** * Captcha field. * * @package WPFormsCaptcha * @author WPForms * @since 1.0.0 * @license GPL-2.0+ * @copyright Copyright (c) 2016, WPForms LLC */ class WPForms_Captcha_Field extends WPForms_Field { /** * Min & max values to participate in equation and operators. * * @since 1.0.0 * * @var array */ public $math; /** * Questions to ask. * * @since 1.0.0 * * @var array */ public $qs; /** * Primary class constructor. * * @since 1.0.0 */ public function init() { // Define field type information. $this->name = esc_html__( 'Captcha', 'wpforms-captcha' ); $this->type = 'captcha'; $this->icon = 'fa-question-circle'; $this->order = 300; $this->group = 'fancy'; $this->math = array( 'min' => 1, 'max' => 15, 'cal' => array( '+', '*' ), ); $this->qs = array( 1 => array( 'question' => esc_html__( 'What is 7+4?', 'wpforms-captcha' ), 'answer' => esc_html__( '11', 'wpforms-captcha' ), ), 2 => array( 'question' => '', 'answer' => '', ), ); // Apply wpforms_math_captcha filters when theme functions.php is loaded. add_action( 'after_setup_theme', array( $this, 'after_setup_theme' ) ); // Form frontend javascript. add_action( 'wpforms_frontend_js', array( $this, 'frontend_js' ) ); // Admin form builder enqueues. add_action( 'wpforms_builder_enqueues', array( $this, 'admin_builder_enqueues' ) ); // Remove the field from saved data. add_filter( 'wpforms_process_after_filter', array( $this, 'process_remove_field' ), 10, 3 ); // Set field to default to required. add_filter( 'wpforms_field_new_required', array( $this, 'field_default_required' ), 10, 2 ); // Define additional field properties. add_filter( 'wpforms_field_properties_captcha', array( $this, 'field_properties' ), 5, 3 ); } /** * Run when theme functions.php is loaded. * * @since 1.2.1 */ public function after_setup_theme() { // Apply wpforms_math_captcha filters. $this->math = apply_filters( 'wpforms_math_captcha', $this->math ); } /** * Enqueue frontend field js. * * @since 1.0.0 * * @param array $forms Forms on the current page. */ public function frontend_js( $forms ) { if ( wpforms()->frontend->assets_global() || true === wpforms_has_field_type( 'captcha', $forms, true ) ) { $min = wpforms_get_min_suffix(); wp_enqueue_script( 'wpforms-captcha', plugin_dir_url( __FILE__ ) . "assets/js/wpforms-captcha{$min}.js", array( 'jquery', 'wpforms' ), WPFORMS_CAPTCHA_VERSION, true ); $strings = array( 'max' => $this->math['max'], 'min' => $this->math['min'], 'cal' => $this->math['cal'], 'errorMsg' => esc_html__( 'Incorrect answer.', 'wpforms-captcha' ), ); wp_localize_script( 'wpforms-captcha', 'wpforms_captcha', $strings ); } } /** * Enqueues for the admin form builder. * * @since 1.0.0 */ public function admin_builder_enqueues() { $min = wpforms_get_min_suffix(); // JavaScript. wp_enqueue_script( 'wpforms-builder-custom-captcha', plugin_dir_url( __FILE__ ) . "assets/js/admin-builder-captcha{$min}.js", array( 'jquery', 'wpforms-builder' ), WPFORMS_CAPTCHA_VERSION ); // CSS. wp_enqueue_style( 'wpforms-builder-custom-captcha', plugin_dir_url( __FILE__ ) . "assets/css/admin-builder-captcha{$min}.css", array(), WPFORMS_CAPTCHA_VERSION ); } /** * Define additional field properties. * * @since 1.3.8 * * @param array $properties Field properties. * @param array $field Field settings. * @param array $form_data Form data and settings. * * @return array */ public function field_properties( $properties, $field, $form_data ) { $field_id = absint( $field['id'] ); $format = ! empty( $field['format'] ) ? $field['format'] : 'math'; // Input Primary: adjust name. $properties['inputs']['primary']['attr']['name'] = "wpforms[fields][{$field_id}][a]"; // Input Primary: adjust class. $properties['inputs']['primary']['class'][] = 'a'; // Input Primary: type dat attr. $properties['inputs']['primary']['data']['rule-wpf-captcha'] = $format; return $properties; } /** * @inheritdoc */ public function is_dynamic_population_allowed( $properties, $field ) { return false; } /** * @inheritdoc */ public function is_fallback_population_allowed( $properties, $field ) { return false; } /** * Field should default to being required. * * @since 1.0.0 * * @param bool $required Required status, true is required. * @param array $field Field settings. * * @return bool */ public function field_default_required( $required, $field ) { if ( 'captcha' === $field['type'] ) { return true; } return $required; } /** * Don't store captcha fields since it's for validation only. * * @since 1.0.0 * * @param array $fields Field settings. * @param array $entry Form $_POST. * @param array $form_data Form data and settings. * * @return array */ public function process_remove_field( $fields, $entry, $form_data ) { foreach ( $fields as $id => $field ) { // Remove captcha from saved data. if ( 'captcha' === $field['type'] ) { unset( $fields[ $id ] ); } } return $fields; } /** * Field options panel inside the builder. * * @since 1.0.0 * * @param array $field Field settings. */ public function field_options( $field ) { // Defaults. $format = ! empty( $field['format'] ) ? esc_attr( $field['format'] ) : 'math'; $qs = ! empty( $field['questions'] ) ? $field['questions'] : $this->qs; // Field is always required. $this->field_element( 'text', $field, array( 'type' => 'hidden', 'slug' => 'required', 'value' => '1', ) ); /* * Basic field options. */ // Options open markup. $this->field_option( 'basic-options', $field, array( 'markup' => 'open', ) ); // Label. $this->field_option( 'label', $field ); // Format. $lbl = $this->field_element( 'label', $field, array( 'slug' => 'format', 'value' => esc_html__( 'Type', 'wpforms_math_captcha' ), 'tooltip' => esc_html__( 'Select type of captcha to use.', 'wpforms_math_captcha' ), ), false ); $fld = $this->field_element( 'select', $field, array( 'slug' => 'format', 'value' => $format, 'options' => array( 'math' => esc_html__( 'Math', 'wpforms-captcha' ), 'qa' => esc_html__( 'Question and Answer', 'wpforms-captcha' ), ), ), false ); $this->field_element( 'row', $field, array( 'slug' => 'format', 'content' => $lbl . $fld, ) ); // Questions. $lbl = $this->field_element( 'label', $field, array( 'slug' => 'questions', 'value' => esc_html__( 'Questions and Answers', 'wpforms-captcha' ), 'tooltip' => esc_html__( 'Add questions to ask the user. Questions are randomly selected.', 'wpforms-captcha' ), ), false ); $fld = sprintf( '<ul data-next-id="%s" data-field-id="%d" data-field-type="%s">', max( array_keys( $qs ) ) + 1, esc_attr( $field['id'] ), esc_attr( $this->type ) ); foreach ( $qs as $key => $value ) { $fld .= '<li data-key="' . absint( $key ) . '">'; $fld .= sprintf( '<input type="text" name="fields[%s][questions][%s][question]" value="%s" class="question" placeholder="%s">', $field['id'], $key, esc_attr( $value['question'] ), esc_html__( 'Question', 'wpforms-captcha' ) ); $fld .= '<a class="add" href="#"><i class="fa fa-plus-circle"></i></a><a class="remove" href="#"><i class="fa fa-minus-circle"></i></a>'; $fld .= sprintf( '<input type="text" name="fields[%s][questions][%s][answer]" value="%s" class="answer" placeholder="%s">', $field['id'], $key, esc_attr( $value['answer'] ), esc_html__( 'Answer', 'wpforms-captcha' ) ); $fld .= '</li>'; } $fld .= '</ul>'; $this->field_element( 'row', $field, array( 'slug' => 'questions', 'content' => $lbl . $fld, 'class' => 'math' === $format ? 'wpforms-hidden' : '', ) ); // Description. $this->field_option( 'description', $field ); // Options close markup. $this->field_option( 'basic-options', $field, array( 'markup' => 'close', ) ); /* * Advanced field options. */ // Options open markup. $this->field_option( 'advanced-options', $field, array( 'markup' => 'open', ) ); // Size. $this->field_option( 'size', $field, array( 'class' => 'math' === $format ? 'wpforms-hidden' : '', ) ); // Placeholder. $this->field_option( 'placeholder', $field ); // Hide Label. $this->field_option( 'label_hide', $field ); // Custom CSS classes. $this->field_option( 'css', $field ); // Options close markup. $this->field_option( 'advanced-options', $field, array( 'markup' => 'close', ) ); } /** * Field preview inside the builder. * * @since 1.0.0 * * @param array $field Field settings. */ public function field_preview( $field ) { // Define data. $placeholder = ! empty( $field['placeholder'] ) ? esc_attr( $field['placeholder'] ) : ''; $format = ! empty( $field['format'] ) ? $field['format'] : 'math'; $num1 = wp_rand( $this->math['min'], $this->math['max'] ); $num2 = wp_rand( $this->math['min'], $this->math['max'] ); $cal = $this->math['cal'][ wp_rand( 0, count( $this->math['cal'] ) - 1 ) ]; $qs = ! empty( $field['questions'] ) ? $field['questions'] : $this->qs; // Label. $this->field_preview_option( 'label', $field ); ?> <div class="format-selected-<?php echo $format; ?> format-selected"> <span class="wpforms-equation"><?php echo "$num1 $cal $num2 = "; ?></span> <p class="wpforms-question"><?php echo $qs[1]['question']; ?></p> <input type="text" placeholder="<?php echo $placeholder; ?>" class="primary-input" disabled> </div> <?php // Description. $this->field_preview_option( 'description', $field ); } /** * Field display on the form front-end. * * @since 1.0.0 * * @param array $field Field settings. * @param array $deprecated Deprecated array. * @param array $form_data Form data and settings. */ public function field_display( $field, $deprecated, $form_data ) { // Define data. $field_id = absint( $field['id'] ); $primary = $field['properties']['inputs']['primary']; $format = $form_data['fields'][ $field_id ]['format']; if ( 'math' === $format ) { // Math Captcha. ?> <div class="wpforms-captcha-math"> <span class="wpforms-captcha-equation"> <span class="n1"></span> <span class="cal"></span> <span class="n2"></span> <span class="e">=</span> </span> <?php printf( '<input type="text" %s %s>', wpforms_html_attributes( $primary['id'], $primary['class'], $primary['data'], $primary['attr'] ), $primary['required'] ); ?> <input type="hidden" name="wpforms[fields][<?php echo $field_id; ?>][cal]" class="cal"> <input type="hidden" name="wpforms[fields][<?php echo $field_id; ?>][n2]" class="n2"> <input type="hidden" name="wpforms[fields][<?php echo $field_id; ?>][n1]" class="n1"> </div> <?php } else { // Question and Answer captcha. $qid = $this->random_question( $field, $form_data ); $q = esc_html( $form_data['fields'][ $field_id ]['questions'][ $qid ]['question'] ); $a = esc_attr( $form_data['fields'][ $field_id ]['questions'][ $qid ]['answer'] ); ?> <p class="wpforms-captcha-question"><?php echo $q; ?></p> <?php $primary['data']['a'] = $a; printf( '<input type="text" %s %s>', wpforms_html_attributes( $primary['id'], $primary['class'], $primary['data'], $primary['attr'] ), $primary['required'] ); ?> <input type="hidden" name="wpforms[fields][<?php echo $field_id; ?>][q]" value="<?php echo $qid; ?>"> <?php } // End if(). } /** * Select a random question. * * @since 1.0.0 * * @param array $field Field settings. * @param array $form_data Form data and settings. * * @return bool|int */ public function random_question( $field, $form_data ) { if ( empty( $form_data['fields'][ $field['id'] ]['questions'] ) ) { return false; } $index = array_rand( $form_data['fields'][ $field['id'] ]['questions'] ); if ( empty( $form_data['fields'][ $field['id'] ]['questions'][ $index ]['question'] ) || empty( $form_data['fields'][ $field['id'] ]['questions'][ $index ]['answer'] ) ) { $index = $this->random_question( $field, $form_data ); } return $index; } /** * Validates field on form submit. * * @since 1.0.0 * * @param int $field_id Field ID. * @param array $field_submit Submitted field value. * @param array $form_data Form data and settings. */ public function validate( $field_id, $field_submit, $form_data ) { // Math captcha. if ( 'math' === $form_data['fields'][ $field_id ]['format'] ) { // All calculation fields are required. if ( ( empty( $field_submit['a'] ) && '0' !== $field_submit['a'] ) || empty( $field_submit['n1'] ) || empty( $field_submit['cal'] ) || empty( $field_submit['n2'] ) ) { wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = wpforms_get_required_label(); return; } $n1 = $field_submit['n1']; $cal = $field_submit['cal']; $n2 = $field_submit['n2']; $a = (int) trim( $field_submit['a'] ); $x = false; switch ( $cal ) { case '+': $x = ( $n1 + $n2 ); break; case '-': $x = ( $n1 - $n2 ); break; case '*': $x = ( $n1 * $n2 ); break; } if ( $x !== $a ) { wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Incorrect answer', 'wpforms-captcha' ); return; } } if ( 'qa' === $form_data['fields'][ $field_id ]['format'] ) { // All fields are required. if ( empty( $field_submit['q'] ) || empty( $field_submit['a'] ) ) { wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = wpforms_get_required_label(); return; } if ( strtolower( trim( $field_submit['a'] ) ) !== strtolower( trim( $form_data['fields'][ $field_id ]['questions'][ $field_submit['q'] ]['answer'] ) ) ) { wpforms()->process->errors[ $form_data['id'] ][ $field_id ] = esc_html__( 'Incorrect answer', 'wpforms-captcha' ); return; } } } } new WPForms_Captcha_Field();
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