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<?php
/**
* WooCommerce Auth
*
* Handles wc-auth endpoint requests.
*
* @package WooCommerce\RestApi
* @since 2.4.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Auth class.
*/
class WC_Auth {
/**
* Version.
*
* @var int
*/
const VERSION = 1;
/**
* Setup class.
*
* @since 2.4.0
*/
public function __construct() {
// Add query vars.
add_filter( 'query_vars', array( $this, 'add_query_vars' ), 0 );
// Register auth endpoint.
add_action( 'init', array( __CLASS__, 'add_endpoint' ), 0 );
// Handle auth requests.
add_action( 'parse_request', array( $this, 'handle_auth_requests' ), 0 );
}
/**
* Add query vars.
*
* @since 2.4.0
* @param array $vars Query variables.
* @return string[]
*/
public function add_query_vars( $vars ) {
$vars[] = 'wc-auth-version';
$vars[] = 'wc-auth-route';
return $vars;
}
/**
* Add auth endpoint.
*
* @since 2.4.0
*/
public static function add_endpoint() {
add_rewrite_rule( '^wc-auth/v([1]{1})/(.*)?', 'index.php?wc-auth-version=$matches[1]&wc-auth-route=$matches[2]', 'top' );
}
/**
* Get scope name.
*
* @since 2.4.0
* @param string $scope Permission scope.
* @return string
*/
protected function get_i18n_scope( $scope ) {
$permissions = array(
'read' => __( 'Read', 'woocommerce' ),
'write' => __( 'Write', 'woocommerce' ),
'read_write' => __( 'Read/Write', 'woocommerce' ),
);
return $permissions[ $scope ];
}
/**
* Return a list of permissions a scope allows.
*
* @since 2.4.0
* @param string $scope Permission scope.
* @return array
*/
protected function get_permissions_in_scope( $scope ) {
$permissions = array();
switch ( $scope ) {
case 'read':
$permissions[] = __( 'View coupons', 'woocommerce' );
$permissions[] = __( 'View customers', 'woocommerce' );
$permissions[] = __( 'View orders and sales reports', 'woocommerce' );
$permissions[] = __( 'View products', 'woocommerce' );
break;
case 'write':
$permissions[] = __( 'Create webhooks', 'woocommerce' );
$permissions[] = __( 'Create coupons', 'woocommerce' );
$permissions[] = __( 'Create customers', 'woocommerce' );
$permissions[] = __( 'Create orders', 'woocommerce' );
$permissions[] = __( 'Create products', 'woocommerce' );
break;
case 'read_write':
$permissions[] = __( 'Create webhooks', 'woocommerce' );
$permissions[] = __( 'View and manage coupons', 'woocommerce' );
$permissions[] = __( 'View and manage customers', 'woocommerce' );
$permissions[] = __( 'View and manage orders and sales reports', 'woocommerce' );
$permissions[] = __( 'View and manage products', 'woocommerce' );
break;
}
return apply_filters( 'woocommerce_api_permissions_in_scope', $permissions, $scope );
}
/**
* Build auth urls.
*
* @since 2.4.0
* @param array $data Data to build URL.
* @param string $endpoint Endpoint.
* @return string
*/
protected function build_url( $data, $endpoint ) {
$url = wc_get_endpoint_url( 'wc-auth/v' . self::VERSION, $endpoint, home_url( '/' ) );
return add_query_arg(
array(
'app_name' => wc_clean( $data['app_name'] ),
'user_id' => wc_clean( $data['user_id'] ),
'return_url' => rawurlencode( $this->get_formatted_url( $data['return_url'] ) ),
'callback_url' => rawurlencode( $this->get_formatted_url( $data['callback_url'] ) ),
'scope' => wc_clean( $data['scope'] ),
),
$url
);
}
/**
* Decode and format a URL.
*
* @param string $url URL.
* @return string
*/
protected function get_formatted_url( $url ) {
$url = urldecode( $url );
if ( ! strstr( $url, '://' ) ) {
$url = 'https://' . $url;
}
return $url;
}
/**
* Make validation.
*
* @since 2.4.0
* @throws Exception When validate fails.
*/
protected function make_validation() {
$data = array();
$params = array(
'app_name',
'user_id',
'return_url',
'callback_url',
'scope',
);
foreach ( $params as $param ) {
if ( empty( $_REQUEST[ $param ] ) ) { // WPCS: input var ok, CSRF ok.
/* translators: %s: parameter */
throw new Exception( sprintf( __( 'Missing parameter %s', 'woocommerce' ), $param ) );
}
$data[ $param ] = wp_unslash( $_REQUEST[ $param ] ); // WPCS: input var ok, CSRF ok, sanitization ok.
}
if ( ! in_array( $data['scope'], array( 'read', 'write', 'read_write' ), true ) ) {
/* translators: %s: scope */
throw new Exception( sprintf( __( 'Invalid scope %s', 'woocommerce' ), wc_clean( $data['scope'] ) ) );
}
foreach ( array( 'return_url', 'callback_url' ) as $param ) {
$param = $this->get_formatted_url( $data[ $param ] );
if ( false === filter_var( $param, FILTER_VALIDATE_URL ) ) {
/* translators: %s: url */
throw new Exception( sprintf( __( 'The %s is not a valid URL', 'woocommerce' ), $param ) );
}
}
$callback_url = $this->get_formatted_url( $data['callback_url'] );
if ( 0 !== stripos( $callback_url, 'https://' ) ) {
throw new Exception( __( 'The callback_url needs to be over SSL', 'woocommerce' ) );
}
}
/**
* Create keys.
*
* @since 2.4.0
*
* @param string $app_name App name.
* @param string $app_user_id User ID.
* @param string $scope Scope.
*
* @return array
*/
protected function create_keys( $app_name, $app_user_id, $scope ) {
global $wpdb;
$description = sprintf(
'%s - API (%s)',
wc_trim_string( wc_clean( $app_name ), 170 ),
gmdate( 'Y-m-d H:i:s' )
);
$user = wp_get_current_user();
// Created API keys.
$permissions = in_array( $scope, array( 'read', 'write', 'read_write' ), true ) ? sanitize_text_field( $scope ) : 'read';
$consumer_key = 'ck_' . wc_rand_hash();
$consumer_secret = 'cs_' . wc_rand_hash();
$wpdb->insert(
$wpdb->prefix . 'woocommerce_api_keys',
array(
'user_id' => $user->ID,
'description' => $description,
'permissions' => $permissions,
'consumer_key' => wc_api_hash( $consumer_key ),
'consumer_secret' => $consumer_secret,
'truncated_key' => substr( $consumer_key, -7 ),
),
array(
'%d',
'%s',
'%s',
'%s',
'%s',
'%s',
)
);
return array(
'key_id' => $wpdb->insert_id,
'user_id' => $app_user_id,
'consumer_key' => $consumer_key,
'consumer_secret' => $consumer_secret,
'key_permissions' => $permissions,
);
}
/**
* Post consumer data.
*
* @since 2.4.0
*
* @throws Exception When validation fails.
* @param array $consumer_data Consumer data.
* @param string $url URL.
* @return bool
*/
protected function post_consumer_data( $consumer_data, $url ) {
$params = array(
'body' => wp_json_encode( $consumer_data ),
'timeout' => 60,
'headers' => array(
'Content-Type' => 'application/json;charset=' . get_bloginfo( 'charset' ),
),
);
$response = wp_safe_remote_post( esc_url_raw( $url ), $params );
if ( is_wp_error( $response ) ) {
throw new Exception( $response->get_error_message() );
} elseif ( 200 !== intval( $response['response']['code'] ) ) {
throw new Exception( __( 'An error occurred in the request and at the time were unable to send the consumer data', 'woocommerce' ) );
}
return true;
}
/**
* Handle auth requests.
*
* @since 2.4.0
* @throws Exception When auth_endpoint validation fails.
*/
public function handle_auth_requests() {
global $wp;
if ( ! empty( $_GET['wc-auth-version'] ) ) { // WPCS: input var ok, CSRF ok.
$wp->query_vars['wc-auth-version'] = wc_clean( wp_unslash( $_GET['wc-auth-version'] ) ); // WPCS: input var ok, CSRF ok.
}
if ( ! empty( $_GET['wc-auth-route'] ) ) { // WPCS: input var ok, CSRF ok.
$wp->query_vars['wc-auth-route'] = wc_clean( wp_unslash( $_GET['wc-auth-route'] ) ); // WPCS: input var ok, CSRF ok.
}
// wc-auth endpoint requests.
if ( ! empty( $wp->query_vars['wc-auth-version'] ) && ! empty( $wp->query_vars['wc-auth-route'] ) ) {
$this->auth_endpoint( $wp->query_vars['wc-auth-route'] );
}
}
/**
* Auth endpoint.
*
* @since 2.4.0
* @throws Exception When validation fails.
* @param string $route Route.
*/
protected function auth_endpoint( $route ) {
ob_start();
$consumer_data = array();
try {
$route = strtolower( wc_clean( $route ) );
$this->make_validation();
$data = wp_unslash( $_REQUEST ); // WPCS: input var ok, CSRF ok.
// Login endpoint.
if ( 'login' === $route && ! is_user_logged_in() ) {
/**
* If a merchant is using the WordPress SSO (handled through Jetpack)
* to manage their authorisation then it is likely they'll find that
* their username and password do not work through this form. We
* instead need to redirect them to the WordPress login so that they
* can then be redirected back here with a valid token.
*/
// Check if Jetpack is installed and activated.
if ( class_exists( 'Jetpack' ) && Jetpack::connection()->is_active() ) {
// Check if the user is using the WordPress.com SSO.
if ( Jetpack::is_module_active( 'sso' ) ) {
$redirect_url = $this->build_url( $data, 'authorize' );
// Build the SSO URL.
$login_url = Jetpack_SSO::get_instance()->build_sso_button_url(
array(
'redirect_to' => rawurlencode( esc_url_raw( $redirect_url ) ),
'action' => 'login',
)
);
// Perform the redirect.
wp_safe_redirect( $login_url );
exit;
}
}
wc_get_template(
'auth/form-login.php',
array(
'app_name' => wc_clean( $data['app_name'] ),
'return_url' => add_query_arg(
array(
'success' => 0,
'user_id' => wc_clean( $data['user_id'] ),
),
$this->get_formatted_url( $data['return_url'] )
),
'redirect_url' => $this->build_url( $data, 'authorize' ),
)
);
exit;
} elseif ( 'login' === $route && is_user_logged_in() ) {
// Redirect with user is logged in.
wp_redirect( esc_url_raw( $this->build_url( $data, 'authorize' ) ) );
exit;
} elseif ( 'authorize' === $route && ! is_user_logged_in() ) {
// Redirect with user is not logged in and trying to access the authorize endpoint.
wp_redirect( esc_url_raw( $this->build_url( $data, 'login' ) ) );
exit;
} elseif ( 'authorize' === $route && current_user_can( 'manage_woocommerce' ) ) {
// Authorize endpoint.
wc_get_template(
'auth/form-grant-access.php',
array(
'app_name' => wc_clean( $data['app_name'] ),
'return_url' => add_query_arg(
array(
'success' => 0,
'user_id' => wc_clean( $data['user_id'] ),
),
$this->get_formatted_url( $data['return_url'] )
),
'scope' => $this->get_i18n_scope( wc_clean( $data['scope'] ) ),
'permissions' => $this->get_permissions_in_scope( wc_clean( $data['scope'] ) ),
'granted_url' => wp_nonce_url( $this->build_url( $data, 'access_granted' ), 'wc_auth_grant_access', 'wc_auth_nonce' ),
'logout_url' => wp_logout_url( $this->build_url( $data, 'login' ) ),
'user' => wp_get_current_user(),
)
);
exit;
} elseif ( 'access_granted' === $route && current_user_can( 'manage_woocommerce' ) ) {
// Granted access endpoint.
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.
throw new Exception( __( 'Invalid nonce verification', 'woocommerce' ) );
}
$consumer_data = $this->create_keys( $data['app_name'], $data['user_id'], $data['scope'] );
$response = $this->post_consumer_data( $consumer_data, $this->get_formatted_url( $data['callback_url'] ) );
if ( $response ) {
wp_redirect(
esc_url_raw(
add_query_arg(
array(
'success' => 1,
'user_id' => wc_clean( $data['user_id'] ),
),
$this->get_formatted_url( $data['return_url'] )
)
)
);
exit;
}
} else {
throw new Exception( __( 'You do not have permission to access this page', 'woocommerce' ) );
}
} catch ( Exception $e ) {
$this->maybe_delete_key( $consumer_data );
/* translators: %s: error message */
wp_die( sprintf( esc_html__( 'Error: %s.', 'woocommerce' ), esc_html( $e->getMessage() ) ), esc_html__( 'Access denied', 'woocommerce' ), array( 'response' => 401 ) );
}
}
/**
* Maybe delete key.
*
* @since 2.4.0
*
* @param array $key Key.
*/
private function maybe_delete_key( $key ) {
global $wpdb;
if ( isset( $key['key_id'] ) ) {
$wpdb->delete( $wpdb->prefix . 'woocommerce_api_keys', array( 'key_id' => $key['key_id'] ), array( '%d' ) );
}
}
}
new WC_Auth();