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wp-content/plugins/gravityformsrecaptcha/includes/class-gf-field-recaptcha.php

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+<?php
+
+namespace Gravity_Forms\Gravity_Forms_RECAPTCHA;
+
+use GF_Field;
+use GFCommon;
+use GFAPI;
+
+/**
+ * Class GF_Field_RECAPTCHA
+ *
+ * @since 1.0
+ *
+ * @package Gravity_Forms\Gravity_Forms_RECAPTCHA
+ */
+class GF_Field_RECAPTCHA extends GF_Field {
+	/**
+	 * Recaptcha field type.
+	 *
+	 * @since 1.0
+	 * @var string
+	 */
+	public $type = 'recaptcha';
+
+	/**
+	 * Prevent the field being saved to the entry.
+	 *
+	 * @since 1.1
+	 * @var bool
+	 */
+	public $displayOnly = true;
+
+	/**
+	 * Decoded field data.
+	 *
+	 * @since 1.0
+	 * @var object
+	 */
+	private $data;
+
+	/**
+	 * Return empty array to prevent the field from showing up in the form editor.
+	 *
+	 * @since 1.0
+	 * @return array
+	 */
+	public function get_form_editor_button() {
+		return array();
+	}
+
+	/**
+	 * The field markup.
+	 *
+	 * @since 1.0
+	 * @since 2.2.0 Updated not to output the input when a checkbox key is used.
+	 *
+	 * @param array      $form  The form array.
+	 * @param string     $value The field value.
+	 * @param array|null $entry The entry array.
+	 *
+	 * @return string
+	 */
+	public function get_field_input( $form, $value = '', $entry = null ) {
+		if ( gf_recaptcha()->get_connection_type() === 'enterprise' ) {
+			if ( ! gf_recaptcha()->enterprise_keys_configured() ) {
+				gf_recaptcha()->log_error( __METHOD__ . '(): Enterprise project and/or key not saved in the reCAPTCHA Settings.' );
+
+				return '';
+			}
+
+			$key_type     = gf_recaptcha()->get_plugin_settings_instance()->get_recaptcha_key( 'site_key_type_v3_enterprise' );
+			$is_score_key = empty( $key_type ) || $key_type === 'SCORE';
+			if ( ! $is_score_key ) {
+				gf_recaptcha()->log_debug( __METHOD__ . '(): reCAPTCHA v3 Enterprise is not configured to use a score type key.' );
+
+				return '';
+			}
+
+			$site_key_attr = '';
+		} else {
+			$plugin_settings = gf_recaptcha()->get_plugin_settings_instance();
+			$site_key_attr   = sprintf( "data-sitekey='%s'", esc_attr( $plugin_settings->get_recaptcha_key( 'site_key_v3' ) ) );
+		}
+
+		$this->formId = absint( rgar( $form, 'id' ) );
+		$name         = $this->get_input_name();
+		$tabindex     = GFCommon::$tab_index > 0 ? GFCommon::$tab_index ++ : 0;
+
+		return "<div class='gf_invisible ginput_recaptchav3' {$site_key_attr} data-tabindex='{$tabindex}'>"
+		       . '<input id="' . esc_attr( $name ) . '" class="gfield_recaptcha_response" type="hidden" name="' . esc_attr( $name ) . '" value=""/>'
+		       . '</div>';
+	}
+
+	/**
+	 * Modify the validation result if the Recaptcha response has been altered.
+	 *
+	 * This is a callback to the gform_validation filter to allow us to validate the values in the hidden field.
+	 *
+	 * @since 1.0
+	 *
+	 * @see   GF_RECAPTCHA::init()
+	 *
+	 * @param array $validation_data The validation data.
+	 *
+	 * @return array
+	 */
+	public function validation_check( $validation_data ) {
+		$this->formId = absint( rgars( $validation_data, 'form/id' ) );
+
+		if ( $this->is_valid_field_data() ) {
+
+			// Set is_spam value.
+			$validation_data['is_spam'] = gf_recaptcha()->is_spam_submission( rgar( $validation_data, 'form' ) );
+
+			return $validation_data;
+		}
+
+		// Set is_valid to false and return the validation data.
+		return $this->invalidate( $validation_data );
+	}
+
+	/**
+	 * Validates that the data in the hidden input is a valid Recaptcha entry.
+	 *
+	 * @since 1.0
+	 *
+	 * @return bool
+	 */
+	private function is_valid_field_data() {
+		$data = rgpost( $this->get_input_name() );
+
+		if ( empty( $data ) ) {
+			gf_recaptcha()->log_debug( __METHOD__ . "(): Input {$this->get_input_name()} empty." );
+
+			return false;
+		}
+
+		return gf_recaptcha()->get_token_verifier()->verify_submission( $data );
+	}
+
+	/**
+	 * Set is_valid to false on the validation data.
+	 *
+	 * @since 1.0
+	 *
+	 * @param array $validation_data The validation data.
+	 *
+	 * @return mixed
+	 */
+	private function invalidate( $validation_data ) {
+		$validation_data['is_valid'] = false;
+
+		return $validation_data;
+	}
+
+	/**
+	 * Returns the value of the input name attribute.
+	 *
+	 * @since 1.1
+	 * @since 1.2 Added optional form_id parameter.
+	 *
+	 * @return string
+	 */
+	public function get_input_name( $form_id = null ) {
+		if ( $form_id ) {
+			$this->formId = absint( $form_id );
+		}
+
+		return 'input_' . md5( 'recaptchav3' . gf_recaptcha()->get_version() . $this->formId );
+	}
+
+}