<?php

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/**

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* WooCommerce Auth

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*

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* Handles wc-auth endpoint requests.

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*

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* @package WooCommerce\RestApi

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* @since 2.4.0

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*/

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defined( 'ABSPATH' ) || exit;

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/**

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* Auth class.

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*/

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class WC_Auth {

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/**

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* Version.

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*

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* @var int

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*/

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const VERSION = 1;

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/**

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* Setup class.

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*

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* @since 2.4.0

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*/

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public function __construct() {

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// Add query vars.

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add_filter( 'query_vars', array( $this, 'add_query_vars' ), 0 );

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// Register auth endpoint.

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add_action( 'init', array( __CLASS__, 'add_endpoint' ), 0 );

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// Handle auth requests.

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add_action( 'parse_request', array( $this, 'handle_auth_requests' ), 0 );

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}

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/**

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* Add query vars.

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*

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* @since 2.4.0

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* @param array $vars Query variables.

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* @return string[]

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*/

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public function add_query_vars( $vars ) {

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$vars[] = 'wc-auth-version';

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$vars[] = 'wc-auth-route';

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return $vars;

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}

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/**

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* Add auth endpoint.

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*

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* @since 2.4.0

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*/

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public static function add_endpoint() {

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add_rewrite_rule( '^wc-auth/v([1]{1})/(.*)?', 'index.php?wc-auth-version=$matches[1]&wc-auth-route=$matches[2]', 'top' );

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}

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/**

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* Get scope name.

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*

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* @since 2.4.0

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* @param string $scope Permission scope.

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* @return string

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*/

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protected function get_i18n_scope( $scope ) {

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$permissions = array(

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'read' => __( 'Read', 'woocommerce' ),

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'write' => __( 'Write', 'woocommerce' ),

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'read_write' => __( 'Read/Write', 'woocommerce' ),

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);

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return $permissions[ $scope ];

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}

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/**

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* Return a list of permissions a scope allows.

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*

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* @since 2.4.0

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* @param string $scope Permission scope.

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* @return array

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*/

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protected function get_permissions_in_scope( $scope ) {

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$permissions = array();

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switch ( $scope ) {

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case 'read':

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$permissions[] = __( 'View coupons', 'woocommerce' );

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$permissions[] = __( 'View customers', 'woocommerce' );

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$permissions[] = __( 'View orders and sales reports', 'woocommerce' );

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$permissions[] = __( 'View products', 'woocommerce' );

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break;

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case 'write':

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$permissions[] = __( 'Create webhooks', 'woocommerce' );

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$permissions[] = __( 'Create coupons', 'woocommerce' );

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$permissions[] = __( 'Create customers', 'woocommerce' );

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$permissions[] = __( 'Create orders', 'woocommerce' );

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$permissions[] = __( 'Create products', 'woocommerce' );

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break;

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case 'read_write':

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$permissions[] = __( 'Create webhooks', 'woocommerce' );

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$permissions[] = __( 'View and manage coupons', 'woocommerce' );

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$permissions[] = __( 'View and manage customers', 'woocommerce' );

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$permissions[] = __( 'View and manage orders and sales reports', 'woocommerce' );

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$permissions[] = __( 'View and manage products', 'woocommerce' );

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break;

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}

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return apply_filters( 'woocommerce_api_permissions_in_scope', $permissions, $scope );

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}

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/**

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* Build auth urls.

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*

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* @since 2.4.0

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* @param array $data Data to build URL.

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* @param string $endpoint Endpoint.

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* @return string

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*/

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protected function build_url( $data, $endpoint ) {

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$url = wc_get_endpoint_url( 'wc-auth/v' . self::VERSION, $endpoint, home_url( '/' ) );

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return add_query_arg(

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array(

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'app_name' => wc_clean( $data['app_name'] ),

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'user_id' => wc_clean( $data['user_id'] ),

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'return_url' => rawurlencode( $this->get_formatted_url( $data['return_url'] ) ),

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'callback_url' => rawurlencode( $this->get_formatted_url( $data['callback_url'] ) ),

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'scope' => wc_clean( $data['scope'] ),

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),

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$url

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);

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}

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/**

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* Decode and format a URL.

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*

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* @param string $url URL.

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* @return string

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*/

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protected function get_formatted_url( $url ) {

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$url = urldecode( $url );

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if ( ! strstr( $url, '://' ) ) {

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$url = 'https://' . $url;

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}

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return $url;

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}

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/**

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* Make validation.

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*

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* @since 2.4.0

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* @throws Exception When validate fails.

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*/

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protected function make_validation() {

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$data = array();

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$params = array(

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'app_name',

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'user_id',

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'return_url',

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'callback_url',

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'scope',

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);

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foreach ( $params as $param ) {

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if ( empty( $_REQUEST[ $param ] ) ) { // WPCS: input var ok, CSRF ok.

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/* translators: %s: parameter */

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throw new Exception( sprintf( __( 'Missing parameter %s', 'woocommerce' ), $param ) );

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}

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$data[ $param ] = wp_unslash( $_REQUEST[ $param ] ); // WPCS: input var ok, CSRF ok, sanitization ok.

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}

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if ( ! in_array( $data['scope'], array( 'read', 'write', 'read_write' ), true ) ) {

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/* translators: %s: scope */

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throw new Exception( sprintf( __( 'Invalid scope %s', 'woocommerce' ), wc_clean( $data['scope'] ) ) );

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}

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foreach ( array( 'return_url', 'callback_url' ) as $param ) {

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$param = $this->get_formatted_url( $data[ $param ] );

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if ( false === filter_var( $param, FILTER_VALIDATE_URL ) ) {

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/* translators: %s: url */

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throw new Exception( sprintf( __( 'The %s is not a valid URL', 'woocommerce' ), $param ) );

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}

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}

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$callback_url = $this->get_formatted_url( $data['callback_url'] );

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if ( 0 !== stripos( $callback_url, 'https://' ) ) {

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throw new Exception( __( 'The callback_url needs to be over SSL', 'woocommerce' ) );

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}

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}

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/**

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* Create keys.

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*

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* @since 2.4.0

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*

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* @param string $app_name App name.

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* @param string $app_user_id User ID.

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* @param string $scope Scope.

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*

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* @return array

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*/

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protected function create_keys( $app_name, $app_user_id, $scope ) {

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global $wpdb;

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$description = sprintf(

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'%s - API (%s)',

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wc_trim_string( wc_clean( $app_name ), 170 ),

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gmdate( 'Y-m-d H:i:s' )

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);

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$user = wp_get_current_user();

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// Created API keys.

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$permissions = in_array( $scope, array( 'read', 'write', 'read_write' ), true ) ? sanitize_text_field( $scope ) : 'read';

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$consumer_key = 'ck_' . wc_rand_hash();

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$consumer_secret = 'cs_' . wc_rand_hash();

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$wpdb->insert(

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$wpdb->prefix . 'woocommerce_api_keys',

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array(

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'user_id' => $user->ID,

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'description' => $description,

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'permissions' => $permissions,

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'consumer_key' => wc_api_hash( $consumer_key ),

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'consumer_secret' => $consumer_secret,

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'truncated_key' => substr( $consumer_key, -7 ),

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),

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array(

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'%d',

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'%s',

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'%s',

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'%s',

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'%s',

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'%s',

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)

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);

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return array(

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'key_id' => $wpdb->insert_id,

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'user_id' => $app_user_id,

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'consumer_key' => $consumer_key,

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'consumer_secret' => $consumer_secret,

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'key_permissions' => $permissions,

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);

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}

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/**

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* Post consumer data.

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*

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* @since 2.4.0

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*

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* @throws Exception When validation fails.

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* @param array $consumer_data Consumer data.

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* @param string $url URL.

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* @return bool

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*/

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protected function post_consumer_data( $consumer_data, $url ) {

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$params = array(

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'body' => wp_json_encode( $consumer_data ),

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'timeout' => 60,

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'headers' => array(

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'Content-Type' => 'application/json;charset=' . get_bloginfo( 'charset' ),

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),

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);

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$response = wp_safe_remote_post( esc_url_raw( $url ), $params );

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if ( is_wp_error( $response ) ) {

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throw new Exception( $response->get_error_message() );

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} elseif ( 200 !== intval( $response['response']['code'] ) ) {

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throw new Exception( __( 'An error occurred in the request and at the time were unable to send the consumer data', 'woocommerce' ) );

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}

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return true;

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}

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/**

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* Handle auth requests.

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*

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* @since 2.4.0

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* @throws Exception When auth_endpoint validation fails.

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*/

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public function handle_auth_requests() {

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global $wp;

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if ( ! empty( $_GET['wc-auth-version'] ) ) { // WPCS: input var ok, CSRF ok.

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$wp->query_vars['wc-auth-version'] = wc_clean( wp_unslash( $_GET['wc-auth-version'] ) ); // WPCS: input var ok, CSRF ok.

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}

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if ( ! empty( $_GET['wc-auth-route'] ) ) { // WPCS: input var ok, CSRF ok.

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$wp->query_vars['wc-auth-route'] = wc_clean( wp_unslash( $_GET['wc-auth-route'] ) ); // WPCS: input var ok, CSRF ok.

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}

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// wc-auth endpoint requests.

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if ( ! empty( $wp->query_vars['wc-auth-version'] ) && ! empty( $wp->query_vars['wc-auth-route'] ) ) {

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$this->auth_endpoint( $wp->query_vars['wc-auth-route'] );

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}

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}

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/**

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* Auth endpoint.

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*

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* @since 2.4.0

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* @throws Exception When validation fails.

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* @param string $route Route.

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*/

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protected function auth_endpoint( $route ) {

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ob_start();

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$consumer_data = array();

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try {

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$route = strtolower( wc_clean( $route ) );

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$this->make_validation();

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$data = wp_unslash( $_REQUEST ); // WPCS: input var ok, CSRF ok.

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// Login endpoint.

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if ( 'login' === $route && ! is_user_logged_in() ) {

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/**

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* If a merchant is using the WordPress SSO (handled through Jetpack)

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* to manage their authorisation then it is likely they'll find that

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* their username and password do not work through this form. We

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* instead need to redirect them to the WordPress login so that they

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* can then be redirected back here with a valid token.

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*/

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// Check if Jetpack is installed and activated.

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if ( class_exists( 'Jetpack' ) && Jetpack::connection()->has_connected_owner() ) {

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// Check if the user is using the WordPress.com SSO.

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if ( Jetpack::is_module_active( 'sso' ) ) {

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$redirect_url = $this->build_url( $data, 'authorize' );

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// Build the SSO URL.

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$login_url = \Automattic\Jetpack\Connection\SSO::get_instance()->build_sso_button_url(

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array(

[344] Fix | Delete

'redirect_to' => rawurlencode( esc_url_raw( $redirect_url ) ),

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'action' => 'login',

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)

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);

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// Perform the redirect.

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wp_safe_redirect( $login_url );

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exit;

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}

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}

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wc_get_template(

[356] Fix | Delete

'auth/form-login.php',

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array(

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'app_name' => wc_clean( $data['app_name'] ),

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'return_url' => add_query_arg(

[360] Fix | Delete

array(

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'success' => 0,

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'user_id' => wc_clean( $data['user_id'] ),

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),

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$this->get_formatted_url( $data['return_url'] )

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),

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'redirect_url' => $this->build_url( $data, 'authorize' ),

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)

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);

[369] Fix | Delete

exit;

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} elseif ( 'login' === $route && is_user_logged_in() ) {

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// Redirect with user is logged in.

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wp_redirect( esc_url_raw( $this->build_url( $data, 'authorize' ) ) );

[374] Fix | Delete

exit;

[375] Fix | Delete

[376] Fix | Delete

} elseif ( 'authorize' === $route && ! is_user_logged_in() ) {

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// Redirect with user is not logged in and trying to access the authorize endpoint.

[378] Fix | Delete

wp_redirect( esc_url_raw( $this->build_url( $data, 'login' ) ) );

[379] Fix | Delete

exit;

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} elseif ( 'authorize' === $route && current_user_can( 'manage_woocommerce' ) ) {

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// Authorize endpoint.

[383] Fix | Delete

wc_get_template(

[384] Fix | Delete

'auth/form-grant-access.php',

[385] Fix | Delete

array(

[386] Fix | Delete

'app_name' => wc_clean( $data['app_name'] ),

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'callback_url' => $this->get_formatted_url( $data['callback_url'] ),

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'return_url' => add_query_arg(

[389] Fix | Delete

array(

[390] Fix | Delete

'success' => 0,

[391] Fix | Delete

'user_id' => wc_clean( $data['user_id'] ),

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),

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$this->get_formatted_url( $data['return_url'] )

[394] Fix | Delete

),

[395] Fix | Delete

'scope' => $this->get_i18n_scope( wc_clean( $data['scope'] ) ),

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'permissions' => $this->get_permissions_in_scope( wc_clean( $data['scope'] ) ),

[397] Fix | Delete

'granted_url' => wp_nonce_url( $this->build_url( $data, 'access_granted' ), 'wc_auth_grant_access', 'wc_auth_nonce' ),

[398] Fix | Delete

'logout_url' => wp_logout_url( $this->build_url( $data, 'login' ) ),

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'user' => wp_get_current_user(),

[400] Fix | Delete

)

[401] Fix | Delete

);

[402] Fix | Delete

exit;

[403] Fix | Delete

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} elseif ( 'access_granted' === $route && current_user_can( 'manage_woocommerce' ) ) {

[405] Fix | Delete

// Granted access endpoint.

[406] Fix | Delete

if ( ! isset( $_GET['wc_auth_nonce'] ) || ! wp_verify_nonce( sanitize_key( wp_unslash( $_GET['wc_auth_nonce'] ) ), 'wc_auth_grant_access' ) ) { // WPCS: input var ok.

[407] Fix | Delete

throw new Exception( __( 'Invalid nonce verification', 'woocommerce' ) );

[408] Fix | Delete

}

[409] Fix | Delete

[410] Fix | Delete

$consumer_data = $this->create_keys( $data['app_name'], $data['user_id'], $data['scope'] );

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$response = $this->post_consumer_data( $consumer_data, $this->get_formatted_url( $data['callback_url'] ) );

[412] Fix | Delete

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if ( $response ) {

[414] Fix | Delete

wp_redirect(

[415] Fix | Delete

esc_url_raw(

[416] Fix | Delete

add_query_arg(

[417] Fix | Delete

array(

[418] Fix | Delete

'success' => 1,

[419] Fix | Delete

'user_id' => wc_clean( $data['user_id'] ),

[420] Fix | Delete

),

[421] Fix | Delete

$this->get_formatted_url( $data['return_url'] )

[422] Fix | Delete

)

[423] Fix | Delete

)

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);

[425] Fix | Delete

exit;

[426] Fix | Delete

}

[427] Fix | Delete

} else {

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throw new Exception( __( 'You do not have permission to access this page', 'woocommerce' ) );

[429] Fix | Delete

}

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} catch ( Exception $e ) {

[431] Fix | Delete

$this->maybe_delete_key( $consumer_data );

[432] Fix | Delete

[433] Fix | Delete

/* translators: %s: error message */

[434] Fix | Delete

wp_die( sprintf( esc_html__( 'Error: %s.', 'woocommerce' ), esc_html( $e->getMessage() ) ), esc_html__( 'Access denied', 'woocommerce' ), array( 'response' => 401 ) );

[435] Fix | Delete

}

[436] Fix | Delete

}

[437] Fix | Delete

[438] Fix | Delete

/**

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* Maybe delete key.

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*

[441] Fix | Delete

* @since 2.4.0

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*

[443] Fix | Delete

* @param array $key Key.

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*/

[445] Fix | Delete

private function maybe_delete_key( $key ) {

[446] Fix | Delete

global $wpdb;

[447] Fix | Delete

[448] Fix | Delete

if ( isset( $key['key_id'] ) ) {

[449] Fix | Delete

$wpdb->delete( $wpdb->prefix . 'woocommerce_api_keys', array( 'key_id' => $key['key_id'] ), array( '%d' ) );

[450] Fix | Delete

}

[451] Fix | Delete

}

[452] Fix | Delete

}

[453] Fix | Delete

new WC_Auth();

[454] Fix | Delete

[455] Fix | Delete