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<?php

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function wpml_get_authenticated_action() {

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$action = filter_input( INPUT_POST, 'icl_ajx_action' );

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$action = $action ? $action : filter_input( INPUT_POST, 'action' );

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$nonce = $action ? filter_input( INPUT_POST, '_icl_nonce' ) : null;

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if ( $nonce === null || $action === null ) {

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$action = filter_input( INPUT_GET, 'icl_ajx_action' );

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$nonce = $action ? filter_input( INPUT_GET, '_icl_nonce' ) : null;

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}

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$authenticated_action = $action && wp_verify_nonce( (string) $nonce, $action . '_nonce' ) ? $action : null;

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return $authenticated_action;

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}

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/**

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* Validates a nonce according to the schema also used by \wpml_nonce_field

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* @param string $action

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* @return false|int

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function wpml_is_action_authenticated( $action ) {

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$nonce = isset( $_POST['_icl_nonce'] ) ? $_POST['_icl_nonce'] : '';

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if ( '' !== $nonce ) {

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$action = $action . '_nonce';

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} else {

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$nonce = isset( $_POST['nonce'] ) ? $_POST['nonce'] : '';

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}

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return wp_verify_nonce( $nonce, $action );

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}

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/**

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* Generates HTML for the hidden nonce input field following the schema

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* used by \wpml_is_action_authenticated

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* @param string $action

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* @return string

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function wpml_nonce_field( $action ) {

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return '<input name="_icl_nonce" type="hidden" value="'

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. wp_create_nonce( $action . '_nonce' ) . '"/>';

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}

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/**

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* RFC 4122 compliant UUID version 5.

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* @param string $name The name to generate the UUID from.

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* @param string $ns_uuid Namespace UUID. Default is for the NS when name string is a URL.

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* @return string The UUID string.

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if ( ! function_exists( 'uuid_v5' ) ) {

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function uuid_v5( $name, $ns_uuid = '6ba7b811-9dad-11d1-80b4-00c04fd430c8' ) {

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$wpml_uuid = new WPML_UUID();

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return $wpml_uuid->get_uuid_v5( $name, $ns_uuid );

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}

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}

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/**

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* This function was introduced in WP 4.7.0

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* Generate a random UUID (version 4).

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* @return string UUID.

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if ( ! function_exists( 'wp_generate_uuid4' ) ) {

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function wp_generate_uuid4() {

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return sprintf( '%04x%04x-%04x-%04x-%04x-%04x%04x%04x',

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mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ),

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mt_rand( 0, 0xffff ),

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mt_rand( 0, 0x0fff ) | 0x4000,

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mt_rand( 0, 0x3fff ) | 0x8000,

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mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff ), mt_rand( 0, 0xffff )

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);

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}

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}

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/**

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* @param string $object_id

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* @param string $object_type

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* @param int|null $timestamp If this parameter is `null`, it will be assigned the current time

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* Set this parameter to 0 if the uuid should not have a time footprint

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* @return string

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function wpml_uuid( $object_id, $object_type, $timestamp = null ) {

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$wpml_uuid = new WPML_UUID();

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return $wpml_uuid->get( $object_id, $object_type, $timestamp );

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}

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