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<?php // phpcs:disable Universal.Files.SeparateFunctionsFromOO.Mixed, PEAR.NamingConventions.ValidClassName
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
if ( ! class_exists( 'acf_validation' ) ) :
/**
* Validation Class
*/
class acf_validation {
/**
* Array of errors.
*
* @var array $errors
*/
public $errors = array();
/**
* This function will setup the class functionality
*
* @type function
* @date 5/03/2014
* @since ACF 5.0.0
*
* @return void
*/
public function __construct() {
// ajax
add_action( 'wp_ajax_acf/validate_save_post', array( $this, 'ajax_validate_save_post' ) );
add_action( 'wp_ajax_nopriv_acf/validate_save_post', array( $this, 'ajax_validate_save_post' ) );
add_action( 'acf/validate_save_post', array( $this, 'acf_validate_save_post' ), 5 );
}
/**
* This function will add an error message for a field
*
* @type function
* @date 25/11/2013
* @since ACF 5.0.0
*
* @param string $input name attribute of DOM element.
* @param string $message error message.
*/
public function add_error( $input, $message ) {
// add to array
$this->errors[] = array(
'input' => $input,
'message' => $message,
);
}
/**
* This function will return an error for a given input
*
* @type function
* @date 5/03/2016
* @since ACF 5.3.2
*
* @param string $input name attribute of DOM element.
* @return array|bool
*/
public function get_error( $input ) {
// bail early if no errors
if ( empty( $this->errors ) ) {
return false;
}
// loop
foreach ( $this->errors as $error ) {
if ( $error['input'] === $input ) {
return $error;
}
}
// return
return false;
}
/**
* This function will return validation errors
*
* @type function
* @date 25/11/2013
* @since ACF 5.0.0
*
* @return array|bool
*/
public function get_errors() {
// bail early if no errors
if ( empty( $this->errors ) ) {
return false;
}
// return
return $this->errors;
}
/**
* This function will remove all errors
*
* @type function
* @date 4/03/2016
* @since ACF 5.3.2
*
* @return void
*/
public function reset_errors() {
$this->errors = array();
}
/**
* Validates $_POST data via AJAX prior to save.
*
* @since ACF 5.0.9
*
* @return void
*/
public function ajax_validate_save_post() {
if ( ! acf_verify_ajax() ) {
if ( empty( $_REQUEST['nonce'] ) ) {
$nonce_error = __( 'SCF was unable to perform validation because no nonce was received by the server.', 'secure-custom-fields' );
} else {
$nonce_error = __( 'SCF was unable to perform validation because the provided nonce failed verification.', 'secure-custom-fields' );
}
wp_send_json_success(
array(
'valid' => 0,
'errors' => array(
array(
'input' => false,
'message' => __( 'SCF was unable to perform validation due to an invalid security nonce being provided.', 'secure-custom-fields' ),
),
),
)
);
}
$json = array(
'valid' => 1,
'errors' => 0,
);
if ( acf_validate_save_post() ) {
wp_send_json_success( $json );
}
$json['valid'] = 0;
$json['errors'] = acf_get_validation_errors();
wp_send_json_success( $json );
}
/**
* Loops over $_POST data and validates ACF values.
*
* @since ACF 5.4.0
*/
public function acf_validate_save_post() {
// phpcs:disable WordPress.Security.NonceVerification.Missing -- Verified elsewhere.
$post_type = acf_request_arg( 'post_type', false );
$screen = acf_request_arg( '_acf_screen', false );
if ( in_array( $screen, array( 'post_type', 'taxonomy', 'ui_options_page' ), true ) && in_array( $post_type, array( 'acf-post-type', 'acf-taxonomy', 'acf-ui-options-page' ), true ) ) {
acf_validate_internal_post_type_values( $post_type );
} elseif ( acf_request_arg( 'acf_ui_options_page' ) ) {
acf_validate_internal_post_type_values( 'acf-ui-options-page' );
} else {
// Bail early if no matching $_POST.
if ( empty( $_POST['acf'] ) ) {
return;
}
acf_validate_values( wp_unslash( $_POST['acf'] ), 'acf' ); // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.InputNotSanitized
}
// phpcs:enable WordPress.Security.NonceVerification.Missing
}
}
// initialize
acf()->validation = new acf_validation();
endif; // class_exists check
/**
* Add validation error.
*
* Alias of acf()->validation->add_error()
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
*
* @param string $input name attribute of DOM element.
* @param string $message error message.
* @return void
*/
function acf_add_validation_error( $input, $message = '' ) {
acf()->validation->add_error( $input, $message );
}
/**
* Retrieve validation errors.
*
* Alias of acf()->validation->function()
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
*
* @return array|bool
*/
function acf_get_validation_errors() {
return acf()->validation->get_errors();
}
/**
* Get the validation error.
*
* Alias of acf()->validation->get_error()
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
* @since SCF 6.4.1 Added the $input parameter, which is required in the get_error method.
*
* @param string $input name attribute of DOM element.
*
* @return string|bool
*/
function acf_get_validation_error( $input ) {
return acf()->validation->get_error( $input );
}
/**
* Reset Validation errors.
*
* Alias of acf()->validation->reset_errors()
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
*
* @return void
*/
function acf_reset_validation_errors() {
acf()->validation->reset_errors();
}
/**
* This function will validate $_POST data and add errors
*
* @type function
* @date 25/11/2013
* @since ACF 5.0.0
*
* @param bool $show_errors if true, errors will be shown via a wp_die screen.
* @return bool
*/
function acf_validate_save_post( $show_errors = false ) {
// action
do_action( 'acf/validate_save_post' );
// vars
$errors = acf_get_validation_errors();
// bail early if no errors
if ( ! $errors ) {
return true;
}
// show errors
if ( $show_errors ) {
$message = '<h2>' . __( 'Validation failed', 'secure-custom-fields' ) . '</h2>';
$message .= '<ul>';
foreach ( $errors as $error ) {
$message .= '<li>' . $error['message'] . '</li>';
}
$message .= '</ul>';
// die
wp_die( acf_esc_html( $message ), esc_html__( 'Validation failed', 'secure-custom-fields' ) );
}
// return
return false;
}
/**
* This function will validate an array of field values
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
*
* @param array $values An array of field values.
* @param string $input_prefix The input element's name attribute.
*
* @return void
*/
function acf_validate_values( $values, $input_prefix = '' ) {
// bail early if empty
if ( empty( $values ) ) {
return;
}
// loop
foreach ( $values as $key => $value ) {
// vars
$field = acf_get_field( $key );
$input = $input_prefix . '[' . $key . ']';
// bail early if not found
if ( ! $field ) {
continue;
}
// validate
acf_validate_value( $value, $field, $input );
}
}
/**
* This function will validate a field's value
*
* @type function
* @date 6/10/13
* @since ACF 5.0.0
*
* @param mixed $value The field value to validate.
* @param array $field The field array.
* @param string $input The input element's name attribute.
*
* @return boolean
*/
function acf_validate_value( $value, $field, $input ) {
// vars
$valid = true;
/* translators: %s: field label */
$message = sprintf( __( '%s value is required', 'secure-custom-fields' ), $field['label'] );
// valid
if ( $field['required'] ) {
// valid is set to false if the value is empty, but allow 0 as a valid value
if ( empty( $value ) && ! is_numeric( $value ) ) {
$valid = false;
}
}
/**
* Filters whether the value is valid.
*
* @date 28/09/13
* @since ACF 5.0.0
*
* @param bool $valid The valid status. Return a string to display a custom error message.
* @param mixed $value The value.
* @param array $field The field array.
* @param string $input The input element's name attribute.
*/
$valid = apply_filters( "acf/validate_value/type={$field['type']}", $valid, $value, $field, $input );
$valid = apply_filters( "acf/validate_value/name={$field['_name']}", $valid, $value, $field, $input );
$valid = apply_filters( "acf/validate_value/key={$field['key']}", $valid, $value, $field, $input );
$valid = apply_filters( 'acf/validate_value', $valid, $value, $field, $input );
// allow $valid to be a custom error message
if ( ! empty( $valid ) && is_string( $valid ) ) {
$message = $valid;
$valid = false;
}
if ( ! $valid ) {
acf_add_validation_error( $input, $message );
return false;
}
// return
return true;
}