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<?php |
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|
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|
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if (!defined('ABSPATH')) { |
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exit; |
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} |
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|
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/** |
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* Cross-cutting infrastructure consumed by every admin-AJAX endpoint |
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* handler in includes/ajax/Ajax_*.php. Owns the request lifecycle that |
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* surrounds a response: debug-context start, response-sent marker, output |
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* buffer management, admin-status fallback |
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* resolution, request reader, failure logging shim, and view instance |
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* resolution. Actually emitting the JSON response (header/ledger stamping, |
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* the encode+echo boundary, output-buffer drain, connection-detach, exit) |
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* is ABJ_404_Solution_AjaxResponseEmitter's own cohesive responsibility -- |
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* see that class for why it is split out rather than kept here. |
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* |
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* Shared cross-cutting helpers (fatal-error |
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* classifier, debug-context starter, admin-nonce action list) for the |
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* per-endpoint admin-table AJAX handlers, so each handler can own a single |
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* endpoint's logic in its own file while reusing this common surface. |
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* |
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* Named without the `Ajax_` endpoint prefix (it is infrastructure, not a |
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* request handler) so it stays out of the per-endpoint contract / auth / |
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* adversarial structural test globs, matching AjaxAdminEndpointRegistrar and |
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* AjaxSecurityGate. It registers no `wp_ajax_*` action and has no request |
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* entry point; every method here runs only after a real handler has already |
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* authorized the request. Carrying the handler prefix made the auth glob scan |
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* this file as though it were an endpoint, which it passed by coincidence |
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* (a substring in policy code) until that code moved to |
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* AdminStatusFallbackResolver. |
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*/ |
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class ABJ_404_Solution_AjaxAdminEndpointSupport { |
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|
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/** |
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* Admin nonce action verbs JS call sites consume. Keep in sync with |
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* view_updater_nonce_refresh.js NONCE_DATA_ATTRS and the wp_verify_nonce() |
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* calls in each handler + in Ajax_TrendData.php. |
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* @return string[] |
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*/ |
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public static function adminNonceActions(): array { |
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return array('abj404_updatePaginationLink', |
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'abj404_refreshStatsDashboard', 'abj404_refreshHealthBar', |
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'abj404_runLazyBackfill', 'abj404_trendData'); |
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} |
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|
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/** |
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* @param int $type |
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* @return bool |
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*/ |
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public static function isFatalErrorType($type) { |
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$fatalTypes = array(E_ERROR, E_PARSE, E_CORE_ERROR, E_COMPILE_ERROR, E_USER_ERROR); |
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return in_array($type, $fatalTypes, true); |
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} |
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|
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/** |
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* Verify an admin AJAX nonce and plugin-admin authorization, then emit |
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* this layer's diagnostic error envelope on failure. |
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* |
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* @param string $nonceAction |
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* @param array<string, mixed> $context |
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* @param string $handlerName Human-readable handler label for logs. |
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* @param array<string, mixed> $options Passed to AjaxSecurityGate. |
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* @return bool True when authorized. |
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*/ |
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public static function requireAdminWithNonceOrRespond( |
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string $nonceAction, |
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array $context, |
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string $handlerName, |
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array $options = array() |
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): bool { |
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$checkpointRequestId = ABJ_404_Solution_AjaxDiagnosticRequestPolicy::instrumentedRequestId($context); |
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$gate = function_exists('abj_service_optional') ? abj_service_optional('ajax_security_gate') : null; |
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if (!is_object($gate) || !method_exists($gate, 'authorizeAdminWithNonce')) { |
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ABJ_404_Solution_AjaxCheckpointLogger::record($checkpointRequestId, 'auth_service_unavailable_branch', array('handler' => $handlerName)); |
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self::safeLogAjaxFailure('AJAX authorization service unavailable in ' . $handlerName . '.', $context); |
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self::markAjaxResponseSent(); |
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self::getAndClearAjaxBufferedOutput(); |
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ABJ_404_Solution_AjaxResponseEmitter::sendJsonResponseAndExit( |
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ABJ_404_Solution_AjaxErrorEnvelope::build('Unauthorized', null, false), |
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403 |
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); |
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return false; |
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} |
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|
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$result = ABJ_404_Solution_AjaxCheckpointLogger::around( |
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$checkpointRequestId, |
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'auth_check', |
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static fn() => $gate->authorizeAdminWithNonce($nonceAction, $options) |
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); |
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if (is_array($result) && !empty($result['ok'])) { |
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if (isset($GLOBALS['abj404_ajax_context']) && is_array($GLOBALS['abj404_ajax_context'])) { |
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$GLOBALS['abj404_ajax_context']['is_plugin_admin'] = true; |
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} |
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return true; |
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} |
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|
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$code = self::authResultString($result, 'code', 'unauthorized'); |
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$message = self::authResultString($result, 'message', 'Unauthorized'); |
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$status = self::authResultStatus($result, 403); |
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|
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$summary = $code === 'invalid_nonce' |
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? 'AJAX invalid nonce in ' . $handlerName . '.' |
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: 'AJAX unauthorized in ' . $handlerName . '.'; |
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ABJ_404_Solution_AjaxCheckpointLogger::record($checkpointRequestId, 'auth_failure_branch', array('code' => $code, 'status' => $status)); |
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self::safeLogAjaxFailure($summary, $context); |
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self::markAjaxResponseSent(); |
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self::getAndClearAjaxBufferedOutput(); |
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ABJ_404_Solution_AjaxResponseEmitter::sendJsonResponseAndExit( |
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ABJ_404_Solution_AjaxErrorEnvelope::build($message, null, false), |
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$status |
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); |
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return false; |
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} |
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|
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/** |
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* Read one string field out of an authorization result, falling back when |
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* it is absent or the wrong type. |
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* |
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* $result is deliberately typed `mixed` rather than the authorizer's |
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* declared `array{ok: bool, code: string, ...}` shape, because that shape |
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* is not what this code can count on at runtime: the gate is resolved from |
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* the service container and accepted on nothing stronger than |
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* is_object() + method_exists(), so any object exposing the method name |
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* reaches this branch and may return whatever it likes. Inlined at the |
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* call site the guards read as dead code -- the declared shape guarantees |
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* the keys -- and static analysis says so; taking the value through a |
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* `mixed` parameter is what makes the check honest instead of removing it |
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* from an authorization failure path. |
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* |
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* @param mixed $result |
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*/ |
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private static function authResultString($result, string $key, string $fallback): string { |
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if (!is_array($result) || !isset($result[$key]) || !is_string($result[$key])) { |
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return $fallback; |
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} |
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return $result[$key]; |
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} |
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|
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/** |
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* The HTTP status from an authorization result, or $fallback when it is |
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* absent or non-scalar. Separate from authResultString() because the |
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* accepted input is wider (any scalar, intval()'d) and the output type is |
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* different; see that method for why $result is typed `mixed`. |
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* |
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* @param mixed $result |
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*/ |
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private static function authResultStatus($result, int $fallback): int { |
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if (!is_array($result) || !isset($result['status']) || !is_scalar($result['status'])) { |
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return $fallback; |
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} |
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return intval($result['status']); |
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} |
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|
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/** |
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* @param object|null $abj404view |
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* @return object |
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*/ |
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public static function resolveViewInstance(&$abj404view) { |
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if (is_object($abj404view)) { |
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return $abj404view; |
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} |
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if (function_exists('abj_service_optional')) { |
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$resolved = abj_service_optional('view'); |
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if (is_object($resolved)) { |
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$abj404view = $resolved; |
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return $abj404view; |
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} |
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} |
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throw new Exception('ABJ404 view service not initialized (abj404view is null).'); // allow-raw-error: programmer assertion preserved verbatim from prior ViewUpdater behavior; signals service-container misconfiguration, not user-facing |
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} |
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|
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/** @return ABJ_404_Solution_AjaxFailureLogger */ |
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private static function ajaxFailureLogger() { |
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$logger = function_exists('abj_service_optional') ? abj_service_optional('ajax_failure_logger') : null; |
| 177 |
if ($logger instanceof ABJ_404_Solution_AjaxFailureLogger) { |
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return $logger; |
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} |
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$logging = function_exists('abj_service_optional') ? abj_service_optional('logging') : null; |
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return new ABJ_404_Solution_AjaxFailureLogger(is_object($logging) ? $logging : null); |
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} |
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|
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/** |
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* @param mixed $sql |
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* @return string |
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*/ |
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public static function redactSqlShape($sql) { |
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return self::ajaxFailureLogger()->redactSqlShape($sql); |
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} |
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|
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/** |
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* @param string $summary |
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* @param mixed $details |
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* @param \Throwable|null $throwable |
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* @return void |
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*/ |
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public static function safeLogAjaxFailure($summary, $details = null, $throwable = null) { |
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self::safeLogAjaxFailureBranch( |
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'failure_branch', |
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$summary, |
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static fn() => $details, |
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$throwable |
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); |
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} |
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|
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/** |
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* Persist a post-authorization failure fingerprint before constructing |
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* details, then trace every shared failure-logging boundary. |
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* |
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* @param string $branch |
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* @param string $summary |
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* @param callable(): mixed $detailsFactory |
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* @param \Throwable|null $throwable |
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* @return mixed The constructed details, for the caller's response path. |
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*/ |
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public static function safeLogAjaxFailureBranch( |
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string $branch, |
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$summary, |
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callable $detailsFactory, |
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$throwable = null |
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) { |
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return ABJ_404_Solution_PostAuthorizationFailureTracer::trace( |
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$branch, |
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$throwable, |
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$detailsFactory, |
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static function ($details) use ($summary, $throwable) { |
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$logger = ABJ_404_Solution_PostAuthorizationFailureTracer::aroundOperation( |
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'logger_resolution', |
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static fn() => self::ajaxFailureLogger() |
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); |
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$logger->setOperationTracer( |
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static fn(string $operation, callable $work) => |
| 234 |
ABJ_404_Solution_PostAuthorizationFailureTracer::aroundOperation( |
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$operation, |
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$work |
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) |
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); |
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$logger->safeLogAjaxFailure($summary, $details, $throwable); |
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return $details; |
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} |
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); |
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} |
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|
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/** |
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* @param Throwable $throwable |
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* @return array<string, mixed>|null |
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*/ |
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public static function extractViewQueryDiagnostics(Throwable $throwable) { |
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return self::ajaxFailureLogger()->extractViewQueryDiagnostics($throwable); |
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} |
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|
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/** |
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* @param array<string, mixed> $context |
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* @param string $source Identifier for the originating handler, recorded in the global context. |
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* @return array<string, mixed> |
| 257 |
*/ |
| 258 |
public static function startAjaxDebugContext($context, string $source = 'ViewUpdater') { |
| 259 |
if (!is_array($context)) { |
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$context = array(); |
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} |
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|
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$context['abj404_context_source'] = $source; |
| 264 |
$context['ajax_expected_json'] = true; |
| 265 |
$context['response_sent'] = false; |
| 266 |
$context['ob_level_before'] = ob_get_level(); |
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// Response-head bookkeeping is request state, and this is the one |
| 268 |
// arming point every JSON endpoint passes through. |
| 269 |
ABJ_404_Solution_JsonResponseHead::resetForRequest(); |
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|
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// Prevent WordPress's "critical error" HTML page from masking details for AJAX calls. |
| 272 |
if (!headers_sent()) { |
| 273 |
if (array_key_exists('action', $context) && is_string($context['action'])) { |
| 274 |
header('X-ABJ404-Ajax: ' . preg_replace('/[\r\n]+/', '', $context['action'])); |
| 275 |
} |
| 276 |
if (array_key_exists('subpage', $context) && is_string($context['subpage']) && $context['subpage'] !== '') { |
| 277 |
header('X-ABJ404-Subpage: ' . preg_replace('/[\r\n]+/', '', $context['subpage'])); |
| 278 |
} |
| 279 |
} |
| 280 |
// Outside that guard on purpose. A header genuinely cannot be set once |
| 281 |
// output has started, but display_errors is PHP_INI_ALL with no such |
| 282 |
// restriction, so sharing the guard stopped suppressing notices on |
| 283 |
// exactly the request that had ALREADY emitted stray bytes -- the one |
| 284 |
// whose body was already suspect. |
| 285 |
// |
| 286 |
// Recorded rather than assumed, because ini_set is refusable: a host |
| 287 |
// carrying it in disable_functions is a live user environment. Without |
| 288 |
// this, PHP notices print into a body every consumer parses as JSON, |
| 289 |
// and in a support payload that is indistinguishable from the |
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// transport corruption the canary ladder is investigating. |
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$context['display_errors_suppressed'] = ABJ_404_Solution_PhpRuntimeCapabilityAdapter::setIni( |
| 292 |
array('directive' => 'display_errors', 'value' => '0')) !== false; |
| 293 |
if (apply_filters('abj404_should_manage_output_buffer', true, array('source' => 'viewUpdater_startAjaxDebugContext'))) { |
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@ob_start(); |
| 295 |
} |
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|
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$GLOBALS['abj404_ajax_context'] = $context; |
| 298 |
// diagnosticRequestId, not instrumentedRequestId: this arming point is |
| 299 |
// shared by the table endpoint AND the canary ladder, and the |
| 300 |
// instrumented predicate answers for ajaxUpdatePaginationLinks alone. |
| 301 |
// Using it here left ajaxRunCanaryStep with every tracer null, so the |
| 302 |
// ladder -- which exists only to re-run the same boot/auth/dispatch |
| 303 |
// path and produce a COMPARABLE trace -- came back with none of the |
| 304 |
// records it is compared against. Both predicates still require the |
| 305 |
// debug opt-in, so a default GA request stays inert either way. |
| 306 |
$diagnosticsEnabled = ABJ_404_Solution_AjaxDiagnosticRequestPolicy::diagnosticRequestId($context) !== ''; |
| 307 |
self::configureDiagnosticOperationTracers($diagnosticsEnabled); |
| 308 |
return $context; |
| 309 |
} |
| 310 |
|
| 311 |
/** |
| 312 |
* Arm retry-only diagnostics after the endpoint has authorized the user. |
| 313 |
* |
| 314 |
* Raw retryCount input is insufficient: callers must reach this method |
| 315 |
* after nonce and plugin-admin checks. The policy validates the action, |
| 316 |
* bounded retry count, and this internal marker before returning an ID. |
| 317 |
* |
| 318 |
* @param array<string, mixed> $context |
| 319 |
* @return array<string, mixed> |
| 320 |
*/ |
| 321 |
public static function armAuthorizedRetryDiagnostics(array $context): array { |
| 322 |
$context['diagnostic_retry_authorized'] = true; |
| 323 |
$GLOBALS['abj404_ajax_context'] = $context; |
| 324 |
$diagnosticsEnabled = ABJ_404_Solution_AjaxDiagnosticRequestPolicy::diagnosticRequestId($context) !== ''; |
| 325 |
self::configureDiagnosticOperationTracers($diagnosticsEnabled); |
| 326 |
return $context; |
| 327 |
} |
| 328 |
|
| 329 |
/** Enable or clear the shared operation tracer callbacks for this request. */ |
| 330 |
private static function configureDiagnosticOperationTracers(bool $diagnosticsEnabled): void { |
| 331 |
$fileTracer = $diagnosticsEnabled |
| 332 |
? static fn(string $operation, string $path, array $fields, callable $work) => |
| 333 |
ABJ_404_Solution_TemplateFileReadTracer::trace($operation, $path, $fields, $work) |
| 334 |
: null; |
| 335 |
$routineTracer = $diagnosticsEnabled |
| 336 |
? static fn(string $operation, array $fields, callable $work) => |
| 337 |
ABJ_404_Solution_RoutineLogTracer::trace($operation, $fields, $work) |
| 338 |
: null; |
| 339 |
$authorizationTracer = $diagnosticsEnabled |
| 340 |
? static fn(string $authorizationOperation, string $routineOperation, callable $work) => |
| 341 |
ABJ_404_Solution_AuthorizationLogTracer::aroundRoutineOperation( |
| 342 |
$authorizationOperation, $routineOperation, $work) |
| 343 |
: null; |
| 344 |
$sortReadinessTracer = $diagnosticsEnabled |
| 345 |
? static fn(string $operation, array $fields, callable $work) => |
| 346 |
ABJ_404_Solution_SortReadinessTracer::trace($operation, $fields, $work) |
| 347 |
: null; |
| 348 |
$statusCountTracer = $diagnosticsEnabled |
| 349 |
? static fn(string $operation, array $fields, callable $work) => |
| 350 |
ABJ_404_Solution_StatusCountsForegroundTracer::trace($operation, $fields, $work) |
| 351 |
: null; |
| 352 |
ABJ_404_Solution_FileSystemService::setOperationTracer($fileTracer); |
| 353 |
ABJ_404_Solution_RoutineLoggingBridge::setTracer($routineTracer); |
| 354 |
ABJ_404_Solution_RoutineLoggingBridge::setAuthorizationTracer($authorizationTracer); |
| 355 |
ABJ_404_Solution_RedirectsDenormSchemaReadiness::setOperationTracer($sortReadinessTracer); |
| 356 |
ABJ_404_Solution_StatusCountsRepository::setOperationTracer($statusCountTracer); |
| 357 |
ABJ_404_Solution_StatusCountsRefreshCoordinator::setOperationTracer($statusCountTracer); |
| 358 |
ABJ_404_Solution_CronScheduler::setStatusCountOperationTracer($statusCountTracer); |
| 359 |
} |
| 360 |
|
| 361 |
/** @return void */ |
| 362 |
public static function markAjaxResponseSent() { |
| 363 |
if (isset($GLOBALS['abj404_ajax_context']) && is_array($GLOBALS['abj404_ajax_context'])) { |
| 364 |
$GLOBALS['abj404_ajax_context']['response_sent'] = true; |
| 365 |
} |
| 366 |
} |
| 367 |
|
| 368 |
/** @return string */ |
| 369 |
public static function getAndClearAjaxBufferedOutput() { |
| 370 |
// This filter dispatches foreign WordPress callbacks (named + `all`) |
| 371 |
// before the output buffer is read or drained. On the instrumented |
| 372 |
// table endpoint the dispatch is bracketed and every callback attributed; |
| 373 |
// off it, traceDispatch() is a byte-identical pass-through. |
| 374 |
$shouldManageBuffer = ABJ_404_Solution_ResponseControlFilterTracer::traceDispatch( |
| 375 |
'abj404_should_manage_output_buffer', |
| 376 |
static function () { |
| 377 |
return apply_filters('abj404_should_manage_output_buffer', true, array('source' => 'viewUpdater_getAndClearAjaxBufferedOutput')); |
| 378 |
} |
| 379 |
); |
| 380 |
if (!$shouldManageBuffer) { |
| 381 |
return ''; |
| 382 |
} |
| 383 |
|
| 384 |
$checkpointRequestId = ABJ_404_Solution_AjaxDiagnosticRequestPolicy::instrumentedRequestIdFromGlobalContext(); |
| 385 |
$out = ''; |
| 386 |
if (ob_get_level() > 0) { |
| 387 |
if ($checkpointRequestId === '') { |
| 388 |
$out = (string)ob_get_contents(); |
| 389 |
} else { |
| 390 |
$out = (string)ABJ_404_Solution_AjaxCheckpointLogger::around( |
| 391 |
$checkpointRequestId, |
| 392 |
'ob_read', |
| 393 |
static function () { |
| 394 |
return ob_get_contents(); |
| 395 |
}, |
| 396 |
self::outputBufferCheckpointFields() |
| 397 |
); |
| 398 |
} |
| 399 |
} |
| 400 |
|
| 401 |
$minLevel = 0; |
| 402 |
if (isset($GLOBALS['abj404_ajax_context']) && is_array($GLOBALS['abj404_ajax_context'])) { |
| 403 |
$minLevel = array_key_exists('ob_level_before', $GLOBALS['abj404_ajax_context']) |
| 404 |
? intval($GLOBALS['abj404_ajax_context']['ob_level_before']) : 0; |
| 405 |
} |
| 406 |
// Bounded with a stall check, for the same reason as the response tail: |
| 407 |
// each iteration here can cost a checkpoint write, so an unbounded |
| 408 |
// drain over a buffer that refuses to close burns CPU indefinitely. |
| 409 |
ABJ_404_Solution_OutputBufferDrain::drainTo($minLevel, static function () use ($checkpointRequestId) { |
| 410 |
if ($checkpointRequestId === '') { |
| 411 |
@ob_end_clean(); |
| 412 |
return; |
| 413 |
} |
| 414 |
ABJ_404_Solution_AjaxCheckpointLogger::around( |
| 415 |
$checkpointRequestId, |
| 416 |
'ob_clear', |
| 417 |
static function () { |
| 418 |
@ob_end_clean(); |
| 419 |
}, |
| 420 |
self::outputBufferCheckpointFields() |
| 421 |
); |
| 422 |
}); |
| 423 |
|
| 424 |
return $out; |
| 425 |
} |
| 426 |
|
| 427 |
/** |
| 428 |
* Identify the active output-buffer stack before a read or clean call can |
| 429 |
* invoke a foreign handler. Kept free of buffered content so diagnostics |
| 430 |
* cannot expose response data. |
| 431 |
* |
| 432 |
* @return array{ob_level: int, ob_length: int, ob_handlers: array<int, string>} |
| 433 |
*/ |
| 434 |
private static function outputBufferCheckpointFields(): array { |
| 435 |
$length = ob_get_length(); |
| 436 |
$handlers = ob_list_handlers(); |
| 437 |
return array( |
| 438 |
'ob_level' => ob_get_level(), |
| 439 |
'ob_length' => is_int($length) ? $length : 0, |
| 440 |
'ob_handlers' => is_array($handlers) ? $handlers : array(), |
| 441 |
); |
| 442 |
} |
| 443 |
|
| 444 |
/** @return ABJ_404_Solution_RequestInputNormalizer */ |
| 445 |
public static function getRequestReader() { |
| 446 |
$container = ABJ_404_Solution_ServiceContainer::getInstance(); |
| 447 |
if ($container->has('request_input_normalizer')) { |
| 448 |
/** @var ABJ_404_Solution_RequestInputNormalizer $requestReader */ |
| 449 |
$requestReader = $container->get('request_input_normalizer'); |
| 450 |
return $requestReader; |
| 451 |
} |
| 452 |
/** @var ABJ_404_Solution_RequestInputNormalizer $requestReader */ |
| 453 |
$requestReader = abj_service('request_input_normalizer'); |
| 454 |
return $requestReader; |
| 455 |
} |
| 456 |
|
| 457 |
/** |
| 458 |
* Re-check admin status after an exception path. PluginLogic may be the |
| 459 |
* broken component, so fall back to wp_get_current_user() and |
| 460 |
* is_super_admin() to give real admins detailed error diagnostics. |
| 461 |
* |
| 462 |
* @param bool $isPluginAdmin Current best-known admin status (e.g. from before the throw). |
| 463 |
* @param bool $includeWpUserFallback If true, also fall back to wp_get_current_user() and |
| 464 |
* is_super_admin() (used only by getPaginationLinks; other |
| 465 |
* handlers stop at the PluginLogic re-check). |
| 466 |
* @return bool |
| 467 |
*/ |
| 468 |
public static function resolveIsPluginAdminFallback(bool $isPluginAdmin, bool $includeWpUserFallback = false): bool { |
| 469 |
return ABJ_404_Solution_AdminStatusFallbackResolver::resolve($isPluginAdmin, $includeWpUserFallback); |
| 470 |
} |
| 471 |
} |
| 472 |
|
