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<?php
/**
* Server-side user input validation manager.
*/
class WPCF7_Validation implements ArrayAccess {
private $invalid_fields = array();
private $container = array();
public function __construct() {
$this->container = array(
'valid' => true,
'reason' => array(),
'idref' => array(),
);
}
/**
* Marks a form control as an invalid field.
*
* @param WPCF7_FormTag|array|string $context Context representing the
* target field.
* @param WP_Error|string $error The error of the field.
*/
public function invalidate( $context, $error ) {
if ( $context instanceof WPCF7_FormTag ) {
$tag = $context;
} elseif ( is_array( $context ) ) {
$tag = new WPCF7_FormTag( $context );
} elseif ( is_string( $context ) ) {
$tags = wpcf7_scan_form_tags( array( 'name' => trim( $context ) ) );
$tag = $tags ? new WPCF7_FormTag( $tags[0] ) : null;
}
$name = ! empty( $tag ) ? $tag->name : null;
if ( empty( $name ) or ! wpcf7_is_name( $name ) ) {
return;
}
if ( is_wp_error( $error ) ) {
$message = $error->get_error_message();
} else {
$message = $error;
}
if ( $this->is_valid( $name ) ) {
$id = (string) $tag->get_option( 'id', 'id', true );
if ( ! wpcf7_is_name( $id ) or str_starts_with( $id, 'wpcf7' ) ) {
$id = null;
}
$this->invalid_fields[$name] = array(
'reason' => (string) $message,
'idref' => $id,
);
}
}
/**
* Returns true if the target field is valid.
*
* @param string|null $name Optional. If specified, this is the name of
* the target field. Default null.
* @return bool True if the target field has no error. If no target is
* specified, returns true if all fields are valid.
* Otherwise false.
*/
public function is_valid( $name = null ) {
if ( ! empty( $name ) ) {
return ! isset( $this->invalid_fields[$name] );
} else {
return empty( $this->invalid_fields );
}
}
/**
* Retrieves an associative array of invalid fields.
*
* @return array The associative array of invalid fields.
*/
public function get_invalid_fields() {
return $this->invalid_fields;
}
/**
* Assigns a value to the specified offset.
*
* @link https://www.php.net/manual/en/arrayaccess.offsetset.php
*/
#[ReturnTypeWillChange]
public function offsetSet( $offset, $value ) {
if ( isset( $this->container[$offset] ) ) {
$this->container[$offset] = $value;
}
if ( 'reason' === $offset and is_array( $value ) ) {
foreach ( $value as $k => $v ) {
$this->invalidate( $k, $v );
}
}
}
/**
* Returns the value at specified offset.
*
* @link https://www.php.net/manual/en/arrayaccess.offsetget.php
*/
#[ReturnTypeWillChange]
public function offsetGet( $offset ) {
if ( isset( $this->container[$offset] ) ) {
return $this->container[$offset];
}
}
/**
* Returns true if the specified offset exists.
*
* @link https://www.php.net/manual/en/arrayaccess.offsetexists.php
*/
#[ReturnTypeWillChange]
public function offsetExists( $offset ) {
return isset( $this->container[$offset] );
}
/**
* Unsets an offset.
*
* @link https://www.php.net/manual/en/arrayaccess.offsetunset.php
*/
#[ReturnTypeWillChange]
public function offsetUnset( $offset ) {
}
}