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<?php |
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/** |
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* Public request-header echo probe REST API controller. |
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* |
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* @package WCPOS\WooCommercePOS\API\V2 |
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*/ |
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|
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namespace WCPOS\WooCommercePOS\API\V2; |
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|
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use WCPOS\WooCommercePOS\Sync\Cors; |
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use WP_REST_Request; |
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use WP_REST_Response; |
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|
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/** Reports which POS client headers reached the normal REST stack. */ |
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final class Echo_Probe { |
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/** Register the public echo probe route. */ |
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public function register_routes(): void { |
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register_rest_route( |
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'wcpos/v2', |
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'/echo', |
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array( |
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'methods' => 'GET', |
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'callback' => array( $this, 'get_echo' ), |
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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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/** |
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* Classify the probe as public for the central permission gate. |
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* |
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* @return array<string, string[]> |
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*/ |
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public function wcpos_route_classifications(): array { |
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return array( 'public' => array( '/wcpos/v2/echo' ) ); |
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} |
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|
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/** |
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* Return header and fallback-parameter presence without exposing values. |
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* |
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* @param WP_REST_Request $request Request to inspect. |
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*/ |
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public function get_echo( WP_REST_Request $request ): WP_REST_Response { |
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$headers = array(); |
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|
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foreach ( array_merge( array( 'Authorization', 'Content-Type', 'X-WCPOS' ), Cors::headers() ) as $name ) { |
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$key = strtolower( $name ); |
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// get_header() returns null when absent — normalize, or an absent |
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// header reads as received (the exact case this probe detects). |
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$value = (string) ( $request->get_header( $name ) ?? '' ); |
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|
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if ( 'authorization' === $key && '' === $value && ! empty( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) && \is_string( $_SERVER['REDIRECT_HTTP_AUTHORIZATION'] ) ) { |
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$value = $_SERVER['REDIRECT_HTTP_AUTHORIZATION']; // phpcs:ignore -- Raw byte length only; the value is never returned. |
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} |
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|
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$headers[ $key ] = array( |
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'received' => '' !== $value, |
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'length' => \strlen( $value ), |
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); |
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} |
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$params = $request->get_query_params(); |
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|
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return new WP_REST_Response( |
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array( |
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'v' => 1, |
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'headers' => $headers, |
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'params' => array( |
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'authorization' => isset( $params['authorization'] ) && '' !== $params['authorization'], |
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'wcpos' => isset( $params['wcpos'] ) && '' !== $params['wcpos'], |
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'store_id' => isset( $params['store_id'] ) && '' !== $params['store_id'], |
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), |
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), |
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200 |
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); |
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} |
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} |
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|
