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refresh_token ); } protected function save_data() { } protected function reset_data() { } protected function get_redirect_uri() { return admin_url(); } protected function menu_page_url( $args = '' ) { return menu_page_url( 'wpcf7-integration', false ); } public function load( $action = '' ) { if ( 'auth_redirect' === $action ) { $code = wpcf7_superglobal_get( 'code' ); if ( $code ) { $this->request_token( $code ); } if ( ! empty( $this->access_token ) ) { $message = 'success'; } else { $message = 'failed'; } wp_safe_redirect( $this->menu_page_url( array( 'action' => 'setup', 'message' => $message, ) ) ); exit(); } } protected function authorize( $scope = '' ) { $endpoint = add_query_arg( array( 'response_type' => 'code', 'client_id' => $this->client_id, 'redirect_uri' => urlencode( $this->get_redirect_uri() ), 'scope' => $scope, ), $this->authorization_endpoint ); if ( wp_redirect( sanitize_url( $endpoint ) ) ) { exit(); } } protected function get_http_authorization_header( $scheme = 'basic' ) { $scheme = strtolower( trim( $scheme ) ); switch ( $scheme ) { case 'bearer': return sprintf( 'Bearer %s', $this->access_token ); case 'basic': default: return sprintf( 'Basic %s', base64_encode( $this->client_id . ':' . $this->client_secret ) ); } } protected function request_token( $authorization_code ) { $endpoint = add_query_arg( array( 'code' => $authorization_code, 'redirect_uri' => urlencode( $this->get_redirect_uri() ), 'grant_type' => 'authorization_code', ), $this->token_endpoint ); $request = array( 'headers' => array( 'Authorization' => $this->get_http_authorization_header( 'basic' ), ), ); $response = wp_remote_post( sanitize_url( $endpoint ), $request ); $response_code = (int) wp_remote_retrieve_response_code( $response ); $response_body = wp_remote_retrieve_body( $response ); $response_body = json_decode( $response_body, true ); if ( WP_DEBUG and 400 <= $response_code ) { $this->log( $endpoint, $request, $response ); } if ( 401 === $response_code ) { // Unauthorized $this->access_token = null; $this->refresh_token = null; } else { if ( isset( $response_body['access_token'] ) ) { $this->access_token = $response_body['access_token']; } else { $this->access_token = null; } if ( isset( $response_body['refresh_token'] ) ) { $this->refresh_token = $response_body['refresh_token']; } else { $this->refresh_token = null; } } $this->save_data(); return $response; } protected function refresh_token() { $endpoint = add_query_arg( array( 'refresh_token' => $this->refresh_token, 'grant_type' => 'refresh_token', ), $this->token_endpoint ); $request = array( 'headers' => array( 'Authorization' => $this->get_http_authorization_header( 'basic' ), ), ); $response = wp_remote_post( sanitize_url( $endpoint ), $request ); $response_code = (int) wp_remote_retrieve_response_code( $response ); $response_body = wp_remote_retrieve_body( $response ); $response_body = json_decode( $response_body, true ); if ( WP_DEBUG and 400 <= $response_code ) { $this->log( $endpoint, $request, $response ); } if ( 401 === $response_code ) { // Unauthorized $this->access_token = null; $this->refresh_token = null; } else { if ( isset( $response_body['access_token'] ) ) { $this->access_token = $response_body['access_token']; } else { $this->access_token = null; } if ( isset( $response_body['refresh_token'] ) ) { $this->refresh_token = $response_body['refresh_token']; } } $this->save_data(); return $response; } protected function remote_request( $url, $request = array() ) { static $refreshed = false; $request = wp_parse_args( $request, array() ); $request['headers'] = array_merge( $request['headers'], array( 'Authorization' => $this->get_http_authorization_header( 'bearer' ), ) ); $response = wp_remote_request( sanitize_url( $url ), $request ); if ( 401 === wp_remote_retrieve_response_code( $response ) and ! $refreshed ) { $this->refresh_token(); $refreshed = true; $response = $this->remote_request( $url, $request ); } return $response; } protected function log( $url, $request, $response ) { wpcf7_log_remote_request( $url, $request, $response ); } }