| 1 |
<?php |
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|
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use LP\Firebase\JWT\JWT; |
| 4 |
|
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/** |
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* REST API: LP_Jwt_Public |
| 7 |
* |
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* @package LPJWTAuth |
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* @since 1.0.0 |
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* @author Nhamdv <[email protected]> |
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*/ |
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|
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class LP_Jwt_Public { |
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private $name; |
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|
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private $version; |
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|
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private $namespace; |
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|
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private $jwt_error; |
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|
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private $secret_key; |
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|
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public function __construct( $name, $version ) { |
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$this->name = $name; |
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$this->version = $version; |
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$this->namespace = $this->name . '/' . $this->version; |
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|
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if ( ! defined( 'SECURE_AUTH_KEY' ) && ! defined( 'LP_SECURE_AUTH_KEY' ) ) { |
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return; |
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} |
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|
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$this->secret_key = defined( 'LP_SECURE_AUTH_KEY' ) ? LP_SECURE_AUTH_KEY : SECURE_AUTH_KEY; |
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} |
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|
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public function register_routes() { |
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register_rest_route( |
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$this->namespace, |
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'token', |
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array( |
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'methods' => WP_REST_Server::CREATABLE, |
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'callback' => array( $this, 'generate_token' ), |
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'args' => array( |
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'username' => array( |
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'description' => esc_html__( 'The username of the user.', 'learnpress' ), |
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'type' => 'string', |
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'sanitize_callback' => 'sanitize_text_field', |
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'validate_callback' => 'rest_validate_request_arg', |
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), |
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'password' => array( |
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'description' => esc_html__( 'The password of the user.', 'learnpress' ), |
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'type' => 'string', |
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'sanitize_callback' => 'sanitize_text_field', |
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'validate_callback' => 'rest_validate_request_arg', |
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), |
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), |
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'schema' => array( $this, 'get_item_schema' ), |
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'permission_callback' => '__return_true', |
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) |
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); |
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|
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register_rest_route( |
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$this->namespace, |
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'token/validate', |
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array( |
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'methods' => WP_REST_Server::CREATABLE, |
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'callback' => array( $this, 'validate_token' ), |
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'permission_callback' => '__return_true', |
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) |
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); |
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|
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register_rest_route( |
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$this->namespace, |
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'token/register', |
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array( |
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'methods' => WP_REST_Server::CREATABLE, |
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'callback' => array( $this, 'register' ), |
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'permission_callback' => '__return_true', |
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) |
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); |
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} |
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|
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public function get_item_schema() { |
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$schema = array( |
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'$schema' => 'http://json-schema.org/draft-04/schema#', |
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'title' => esc_html__( 'JSON Web Token', 'learnpress' ), |
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'type' => 'object', |
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'properties' => array( |
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'token' => array( |
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'description' => esc_html__( 'JSON Web Token.', 'learnpress' ), |
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'type' => 'string', |
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'readonly' => true, |
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), |
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'user_id' => array( |
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'description' => esc_html__( 'The ID of the user.', 'learnpress' ), |
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'type' => 'integer', |
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'readonly' => true, |
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), |
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'user_login' => array( |
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'description' => esc_html__( 'The username of the user', 'learnpress' ), |
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'type' => 'string', |
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'readonly' => true, |
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), |
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'user_email' => array( |
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'description' => esc_html__( 'The email address of the user.', 'learnpress' ), |
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'type' => 'string', |
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'readonly' => true, |
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), |
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), |
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); |
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|
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return apply_filters( 'lp_rest_authentication_token_schema', $schema ); |
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} |
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|
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/** |
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* Add CORs support to the request. |
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*/ |
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public function add_cors_support() { |
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$enable_cors = defined( 'LP_JWT_AUTH_CORS_ENABLE' ) ? LP_JWT_AUTH_CORS_ENABLE : false; |
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|
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if ( $enable_cors ) { |
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$headers = apply_filters( 'lp_jwt_auth_cors_allow_headers', 'Access-Control-Allow-Headers, Content-Type, Authorization' ); |
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header( sprintf( 'Access-Control-Allow-Headers: %s', $headers ) ); |
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} |
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} |
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|
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public function register( WP_REST_Request $request ) { |
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$username = $request->get_param( 'username' ); |
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$password = $request->get_param( 'password' ); |
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$confirm_password = $request->get_param( 'confirm_password' ); |
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$email = $request->get_param( 'email' ); |
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|
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$customer_id = LP_Forms_Handler::learnpress_create_new_customer( $email, $username, $password, $confirm_password ); |
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|
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if ( is_wp_error( $customer_id ) ) { |
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return new WP_Error( |
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$customer_id->get_error_code(), |
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$customer_id->get_error_message(), |
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array( |
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'status' => 403, |
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) |
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); |
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} |
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|
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return $this->generate_token( $request ); |
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} |
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|
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public function generate_token( WP_REST_Request $request ) { |
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$secret_key = $this->secret_key; |
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$username = $request->get_param( 'username' ); |
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$password = $request->get_param( 'password' ); |
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|
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if ( ! $secret_key ) { |
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return new WP_Error( |
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'lp_jwt_auth_bad_config', |
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esc_html__( 'LearnPress JWT is not configurated properly, please contact the admin', 'learnpress' ), |
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array( |
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'status' => 403, |
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) |
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); |
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} |
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|
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/** Try to authenticate the user with the passed credentials*/ |
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$user = wp_authenticate( $username, $password ); |
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|
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/** If the authentication fails return a error*/ |
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if ( is_wp_error( $user ) ) { |
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$error_code = $user->get_error_code(); |
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|
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return new WP_Error( |
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'[lp_jwt_auth] ' . $error_code, |
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$user->get_error_message( $error_code ), |
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array( |
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'status' => 403, |
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) |
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); |
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} |
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|
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/** Valid credentials, the user exists create the according Token */ |
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$issued_at = time(); |
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$not_before = apply_filters( 'lp_jwt_auth_not_before', $issued_at, $issued_at ); |
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$expire = apply_filters( 'lp_jwt_auth_expire', $issued_at + WEEK_IN_SECONDS, $issued_at ); |
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|
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$token = array( |
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'iss' => get_bloginfo( 'url' ), |
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'iat' => $issued_at, |
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'nbf' => $not_before, |
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'exp' => $expire, |
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'data' => array( |
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'user' => array( |
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'id' => $user->data->ID, |
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), |
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), |
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); |
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|
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/** Let the user modify the token data before the sign. */ |
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$token = JWT::encode( apply_filters( 'lp_jwt_auth_token_before_sign', $token, $user ), $secret_key ); |
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|
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/** The token is signed, now create the object with no sensible user data to the client*/ |
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$data = array( |
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'token' => $token, |
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'user_id' => $user->data->ID, |
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'user_login' => $user->data->user_login, |
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'user_email' => $user->data->user_email, |
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'user_display_name' => $user->data->display_name, |
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); |
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|
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return apply_filters( 'lp_jwt_auth_token_before_dispatch', $data, $user ); |
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} |
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|
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/** |
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* This is our Middleware to try to authenticate the user according to the |
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* token send. |
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* |
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* @param (int|bool) $user Logged User ID |
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* |
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* @return (int|bool) |
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*/ |
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public function determine_current_user( $user_id ) { |
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if ( ! empty( $user_id ) ) { |
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return $user_id; |
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} |
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|
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$rest_prefix = trailingslashit( rest_get_url_prefix() ); |
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$request_uri = esc_url_raw( wp_unslash( $_SERVER['REQUEST_URI'] ?? '' ) ); |
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|
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/** |
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* Only process REST requests. |
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*/ |
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if ( strpos( $request_uri, $rest_prefix ) === false ) { |
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return $user_id; |
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} |
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|
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/* |
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* Skip the token endpoint itself to avoid double validation. |
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*/ |
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if ( strpos( $request_uri, $rest_prefix . $this->namespace . '/token' ) !== false ) { |
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return $user_id; |
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} |
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|
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/* |
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* No Authorization header → let other auth methods (cookie, app passwords) handle it. |
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*/ |
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$has_auth = ! empty( $_SERVER['HTTP_AUTHORIZATION'] ) || ! empty( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ); |
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if ( ! $has_auth ) { |
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return $user_id; |
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} |
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|
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/** Public LP endpoints that should not surface auth errors. */ |
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$is_public_lp = (bool) ( strpos( $request_uri, '/courses' ) || strpos( $request_uri, '/reset-password' ) || strpos( $request_uri, '/course_category' ) || strpos( $request_uri, '/sections/' ) || strpos( $request_uri, '/section-items/' ) || strpos( $request_uri, '/users' ) ); |
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|
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$is_lp_api = strpos( $request_uri, $rest_prefix . $this->name . '/' ) !== false; |
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|
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$token = $this->validate_token( false ); |
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|
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if ( is_wp_error( $token ) ) { |
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if ( $is_lp_api && ! $is_public_lp ) { |
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$this->jwt_error = $token; |
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} |
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|
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return $user_id; |
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} |
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|
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return $token->data->user->id; |
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} |
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|
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public function validate_token( $output = true ) { |
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/* |
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* Looking for the HTTP_AUTHORIZATION header, if not present just |
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* return the user. |
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*/ |
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$auth = isset( $_SERVER['HTTP_AUTHORIZATION'] ) ? sanitize_text_field( $_SERVER['HTTP_AUTHORIZATION'] ) : false; |
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|
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/* Double check for different auth header string (server dependent) */ |
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if ( ! $auth ) { |
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$auth = isset( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) ? sanitize_text_field( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) : false; |
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} |
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|
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if ( ! $auth ) { |
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return new WP_Error( |
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'lp_jwt_auth_no_auth_header', |
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esc_html__( 'Authorization header not found.', 'learnpress' ), |
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array( |
| 284 |
'status' => 401, |
| 285 |
) |
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); |
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} |
| 288 |
|
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/* |
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* The HTTP_AUTHORIZATION is present verify the format |
| 291 |
* if the format is wrong return the user. |
| 292 |
*/ |
| 293 |
list( $token ) = sscanf( $auth, 'Bearer %s' ); |
| 294 |
|
| 295 |
if ( ! $token ) { |
| 296 |
return new WP_Error( |
| 297 |
'lp_jwt_auth_bad_auth_header', |
| 298 |
esc_html__( 'Authentication token is missing.', 'learnpress' ), |
| 299 |
array( |
| 300 |
'status' => 401, |
| 301 |
) |
| 302 |
); |
| 303 |
} |
| 304 |
|
| 305 |
/** Get the Secret Key */ |
| 306 |
$secret_key = $this->secret_key; |
| 307 |
|
| 308 |
if ( ! $secret_key ) { |
| 309 |
return new WP_Error( |
| 310 |
'lp_jwt_auth_bad_config', |
| 311 |
esc_html__( 'LearnPress JWT is not configurated properly, please contact the admin', 'learnpress' ), |
| 312 |
array( |
| 313 |
'status' => 401, |
| 314 |
) |
| 315 |
); |
| 316 |
} |
| 317 |
|
| 318 |
/** Try to decode the token */ |
| 319 |
try { |
| 320 |
$token = JWT::decode( $token, $secret_key, array( 'HS256' ) ); |
| 321 |
|
| 322 |
/** The Token is decoded now validate the iss */ |
| 323 |
if ( $token->iss != get_bloginfo( 'url' ) ) { |
| 324 |
return new WP_Error( |
| 325 |
'lp_jwt_auth_bad_iss', |
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esc_html__( 'The iss do not match with this server', 'learnpress' ), |
| 327 |
array( |
| 328 |
'status' => 401, |
| 329 |
) |
| 330 |
); |
| 331 |
} |
| 332 |
|
| 333 |
/** So far so good, validate the user id in the token */ |
| 334 |
if ( ! isset( $token->data->user->id ) ) { |
| 335 |
return new WP_Error( |
| 336 |
'lp_jwt_auth_bad_request', |
| 337 |
esc_html__( 'User ID not found in the token', 'learnpress' ), |
| 338 |
array( |
| 339 |
'status' => 401, |
| 340 |
) |
| 341 |
); |
| 342 |
} |
| 343 |
|
| 344 |
if ( ! isset( $token->exp ) ) { |
| 345 |
return new WP_Error( |
| 346 |
'rest_authentication_missing_token_expiration', |
| 347 |
esc_html__( 'The token must have an expiration date.', 'learnpress' ), |
| 348 |
array( |
| 349 |
'status' => 401, |
| 350 |
) |
| 351 |
); |
| 352 |
} |
| 353 |
|
| 354 |
if ( time() > $token->exp ) { |
| 355 |
return new WP_Error( |
| 356 |
'rest_authentication_token_expired', |
| 357 |
esc_html__( 'The token has expired.', 'learnpress' ), |
| 358 |
array( |
| 359 |
'status' => 401, |
| 360 |
) |
| 361 |
); |
| 362 |
} |
| 363 |
|
| 364 |
/** Everything looks good return the decoded token if the $output is false */ |
| 365 |
if ( ! $output ) { |
| 366 |
return $token; |
| 367 |
} |
| 368 |
|
| 369 |
/** If the output is true return an answer to the request to show it */ |
| 370 |
return array( |
| 371 |
'code' => 'lp_jwt_auth_valid_token', |
| 372 |
'message' => esc_html__( 'Valid access token.', 'learnpress' ), |
| 373 |
'data' => array( |
| 374 |
'status' => 200, |
| 375 |
'exp' => $token->exp - time(), |
| 376 |
), |
| 377 |
); |
| 378 |
} catch ( Exception $e ) { |
| 379 |
return new WP_Error( |
| 380 |
'lp_jwt_auth_invalid_token', |
| 381 |
$e->getMessage(), |
| 382 |
array( |
| 383 |
'status' => 401, |
| 384 |
) |
| 385 |
); |
| 386 |
} |
| 387 |
} |
| 388 |
|
| 389 |
/** |
| 390 |
* Filter to hook the rest_pre_dispatch, if the is an error in the request |
| 391 |
* send it, if there is no error just continue with the current request. |
| 392 |
* |
| 393 |
* @param $request |
| 394 |
*/ |
| 395 |
public function rest_pre_dispatch( $request ) { |
| 396 |
if ( is_wp_error( $this->jwt_error ) ) { |
| 397 |
return $this->jwt_error; |
| 398 |
} |
| 399 |
|
| 400 |
return $request; |
| 401 |
} |
| 402 |
} |
| 403 |
|
