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<?php

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/**

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* Server-side user input validation manager.

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class WPCF7_Validation implements ArrayAccess {

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private $invalid_fields = array();

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private $container = array();

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public function __construct() {

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$this->container = array(

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'valid' => true,

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'reason' => array(),

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'idref' => array(),

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);

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}

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/**

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* Marks a form control as an invalid field.

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* @param WPCF7_FormTag|array|string $context Context representing the

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* target field.

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* @param WP_Error|string $error The error of the field.

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public function invalidate( $context, $error ) {

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if ( $context instanceof WPCF7_FormTag ) {

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$tag = $context;

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} elseif ( is_array( $context ) ) {

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$tag = new WPCF7_FormTag( $context );

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} elseif ( is_string( $context ) ) {

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$tags = wpcf7_scan_form_tags( array( 'name' => trim( $context ) ) );

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$tag = $tags ? new WPCF7_FormTag( $tags[0] ) : null;

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}

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$name = ! empty( $tag ) ? $tag->name : null;

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if ( empty( $name )

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or ! wpcf7_is_name( $name ) ) {

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return;

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}

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if ( is_wp_error( $error ) ) {

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$message = $error->get_error_message();

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} else {

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$message = $error;

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}

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if ( $this->is_valid( $name ) ) {

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$id = $tag->get_id_option();

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if ( empty( $id )

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or ! wpcf7_is_name( $id ) ) {

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$id = null;

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}

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$this->invalid_fields[$name] = array(

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'reason' => (string) $message,

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'idref' => $id,

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);

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}

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}

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/**

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* Returns true if the target field is valid.

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* @param string|null $name Optional. If specified, this is the name of

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* the target field. Default null.

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* @return bool True if the target field has no error. If no target is

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* specified, returns true if all fields are valid.

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* Otherwise false.

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public function is_valid( $name = null ) {

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if ( ! empty( $name ) ) {

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return ! isset( $this->invalid_fields[$name] );

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} else {

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return empty( $this->invalid_fields );

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}

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}

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/**

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* Retrieves an associative array of invalid fields.

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* @return array The associative array of invalid fields.

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public function get_invalid_fields() {

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return $this->invalid_fields;

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}

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/**

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* Assigns a value to the specified offset.

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* @link https://www.php.net/manual/en/arrayaccess.offsetset.php

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#[ReturnTypeWillChange]

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public function offsetSet( $offset, $value ) {

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if ( isset( $this->container[$offset] ) ) {

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$this->container[$offset] = $value;

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}

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if ( 'reason' == $offset

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and is_array( $value ) ) {

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foreach ( $value as $k => $v ) {

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$this->invalidate( $k, $v );

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}

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}

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}

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/**

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* Returns the value at specified offset.

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* @link https://www.php.net/manual/en/arrayaccess.offsetget.php

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#[ReturnTypeWillChange]

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public function offsetGet( $offset ) {

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if ( isset( $this->container[$offset] ) ) {

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return $this->container[$offset];

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}

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}

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/**

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* Returns true if the specified offset exists.

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* @link https://www.php.net/manual/en/arrayaccess.offsetexists.php

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#[ReturnTypeWillChange]

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public function offsetExists( $offset ) {

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return isset( $this->container[$offset] );

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}

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/**

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* Unsets an offset.

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* @link https://www.php.net/manual/en/arrayaccess.offsetunset.php

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#[ReturnTypeWillChange]

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public function offsetUnset( $offset ) {

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}

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}

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