| 1 |
<?php |
| 2 |
|
| 3 |
if (!defined('ABSPATH')) { |
| 4 |
exit; |
| 5 |
} |
| 6 |
|
| 7 |
/** |
| 8 |
* Engine Profile Resolver |
| 9 |
* |
| 10 |
* Allows admins to create URL-pattern-based "engine profiles" that control |
| 11 |
* which matching engines run for a given 404 URL. First matching profile wins. |
| 12 |
* If no profile matches, all engines are used (default behavior preserved). |
| 13 |
* |
| 14 |
* Profiles are stored in wp_abj404_engine_profiles and cached per-request |
| 15 |
* via a static property to avoid repeated DB queries on the same page. |
| 16 |
*/ |
| 17 |
class ABJ_404_Solution_EngineProfileResolver { |
| 18 |
|
| 19 |
/** @var self|null */ |
| 20 |
private static $instance = null; |
| 21 |
/** |
| 22 |
* Test seam: install or clear the cached singleton instance without |
| 23 |
* private-field reflection. Pass null to reset between tests; pass a |
| 24 |
* configured instance (or double) to install it. Mirrors the setInstance() |
| 25 |
* contract on DataAccess / PluginLogic (M105 singleton-reset seam). |
| 26 |
* |
| 27 |
* @param self|null $instance |
| 28 |
* @return void |
| 29 |
*/ |
| 30 |
public static function setInstance($instance) { |
| 31 |
self::$instance = $instance; |
| 32 |
} |
| 33 |
|
| 34 |
|
| 35 |
/** @var array<int, object>|null Cached profile rows for current request */ |
| 36 |
private $cachedProfiles = null; |
| 37 |
|
| 38 |
/** @var ABJ_404_Solution_DataAccess|null Lazy DAO accessor for centralized query handling. */ |
| 39 |
/** @var ABJ_404_Solution_DatabaseCore|null */ |
| 40 |
private $dbCore = null; |
| 41 |
|
| 42 |
/** @return self */ |
| 43 |
public static function getInstance() { |
| 44 |
if (self::$instance === null) { |
| 45 |
self::$instance = new self(); |
| 46 |
} |
| 47 |
return self::$instance; |
| 48 |
} |
| 49 |
|
| 50 |
/** |
| 51 |
* Lazy dbCore accessor, defers resolution until first use so unit tests |
| 52 |
* that exercise pure-logic methods (URL matching, JSON decoding) don't |
| 53 |
* boot the database layer. |
| 54 |
* |
| 55 |
* @return ABJ_404_Solution_DatabaseCore |
| 56 |
*/ |
| 57 |
private function dbCore() { |
| 58 |
if ($this->dbCore === null) { |
| 59 |
$this->dbCore = abj_service('db_core'); |
| 60 |
} |
| 61 |
return $this->dbCore; |
| 62 |
} |
| 63 |
|
| 64 |
/** |
| 65 |
* Resolve which engines to run for a given 404 URL. |
| 66 |
* |
| 67 |
* Queries active profiles ordered by priority ASC. First profile whose |
| 68 |
* url_pattern matches the requested URL wins. The matched profile's |
| 69 |
* enabled_engines list (JSON array of full class names) is used to filter |
| 70 |
* the $allEngines array. |
| 71 |
* |
| 72 |
* If no profile matches, $allEngines is returned unchanged. |
| 73 |
* |
| 74 |
* The result is passed through `apply_filters('abj404_resolved_engines', ...)`. |
| 75 |
* |
| 76 |
* @param string $requestedURL The 404 URL being processed (path only or full URL). |
| 77 |
* @param array<int, mixed> $allEngines The full list of matching engine instances. |
| 78 |
* @return array<int, mixed> Filtered (or unchanged) engine list. |
| 79 |
*/ |
| 80 |
public function resolve(string $requestedURL, array $allEngines): array { |
| 81 |
if (empty($allEngines)) { |
| 82 |
return $allEngines; |
| 83 |
} |
| 84 |
|
| 85 |
$profiles = $this->getActiveProfiles(); |
| 86 |
|
| 87 |
if (empty($profiles)) { |
| 88 |
return $allEngines; |
| 89 |
} |
| 90 |
|
| 91 |
foreach ($profiles as $profile) { |
| 92 |
if ($this->urlMatchesProfile($requestedURL, $profile)) { |
| 93 |
$filtered = $this->filterEnginesByProfile($allEngines, $profile); |
| 94 |
/** @var array<int, mixed> $filtered */ |
| 95 |
$filtered = apply_filters('abj404_resolved_engines', $filtered, $requestedURL, $profile); |
| 96 |
return $filtered; |
| 97 |
} |
| 98 |
} |
| 99 |
|
| 100 |
// No match — return all engines unchanged. |
| 101 |
return $allEngines; |
| 102 |
} |
| 103 |
|
| 104 |
/** |
| 105 |
* Determine whether a specific engine class is enabled for a requested URL. |
| 106 |
* |
| 107 |
* This mirrors profile matching + fail-open behavior used by resolve(): |
| 108 |
* - no matching profile -> enabled |
| 109 |
* - empty/malformed enabled_engines -> enabled |
| 110 |
* - matching profile with explicit enabled_engines -> enabled only if listed |
| 111 |
* |
| 112 |
* @param string $requestedURL |
| 113 |
* @param string $engineClassName Fully-qualified class name or short suffix. |
| 114 |
* @return bool |
| 115 |
*/ |
| 116 |
public function isEngineEnabledForUrl(string $requestedURL, string $engineClassName): bool { |
| 117 |
$profiles = $this->getActiveProfiles(); |
| 118 |
|
| 119 |
if (empty($profiles)) { |
| 120 |
return true; |
| 121 |
} |
| 122 |
|
| 123 |
foreach ($profiles as $profile) { |
| 124 |
if (!$this->urlMatchesProfile($requestedURL, $profile)) { |
| 125 |
continue; |
| 126 |
} |
| 127 |
|
| 128 |
$enabledLower = $this->decodeEnabledEnginesLower($profile); |
| 129 |
if ($enabledLower === null || empty($enabledLower)) { |
| 130 |
// Fail-open to preserve historical behavior for broken/empty config. |
| 131 |
return true; |
| 132 |
} |
| 133 |
|
| 134 |
return $this->classMatchesEnabledList($engineClassName, $enabledLower); |
| 135 |
} |
| 136 |
|
| 137 |
// No profile matched this URL. |
| 138 |
return true; |
| 139 |
} |
| 140 |
|
| 141 |
/** |
| 142 |
* Load all active profiles ordered by priority ASC (lowest priority number = first). |
| 143 |
* |
| 144 |
* Uses a per-request cache to avoid repeated DB queries. |
| 145 |
* |
| 146 |
* @return array<int, object> |
| 147 |
*/ |
| 148 |
private function getActiveProfiles(): array { |
| 149 |
if ($this->cachedProfiles !== null) { |
| 150 |
return $this->cachedProfiles; |
| 151 |
} |
| 152 |
|
| 153 |
$table = $this->getTableName(); |
| 154 |
|
| 155 |
if (!$this->tableExists($table)) { |
| 156 |
$this->cachedProfiles = []; |
| 157 |
return $this->cachedProfiles; |
| 158 |
} |
| 159 |
|
| 160 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 161 |
"SELECT `id`, `name`, `url_pattern`, `is_regex`, `enabled_engines`, `priority` |
| 162 |
FROM `{$table}` |
| 163 |
WHERE `status` = 1 |
| 164 |
ORDER BY `priority` ASC, `id` ASC |
| 165 |
LIMIT %d", |
| 166 |
['query_params' => [200], 'result_type' => OBJECT] |
| 167 |
); |
| 168 |
$rows = $queryResult['rows'] ?? []; |
| 169 |
|
| 170 |
$this->cachedProfiles = is_array($rows) ? $rows : []; |
| 171 |
return $this->cachedProfiles; |
| 172 |
} |
| 173 |
|
| 174 |
/** |
| 175 |
* Check whether a URL matches a profile's pattern. |
| 176 |
* |
| 177 |
* @param string $url |
| 178 |
* @param object $profile |
| 179 |
* @return bool |
| 180 |
*/ |
| 181 |
private function urlMatchesProfile(string $url, object $profile): bool { |
| 182 |
$pattern = isset($profile->url_pattern) ? (string)$profile->url_pattern : ''; |
| 183 |
|
| 184 |
if ($pattern === '') { |
| 185 |
return false; |
| 186 |
} |
| 187 |
|
| 188 |
$isRegex = isset($profile->is_regex) && (int)$profile->is_regex === 1; |
| 189 |
|
| 190 |
if ($isRegex) { |
| 191 |
// Patterns are stored without PHP delimiters (users write ^/shop/, not #^/shop/#). |
| 192 |
// Auto-wrap with # delimiters unless the pattern already starts with one. |
| 193 |
$commonDelimiters = ['/', '#', '~', '!', '@', '|', '%']; |
| 194 |
if (!in_array(substr($pattern, 0, 1), $commonDelimiters, true)) { |
| 195 |
$pattern = '#' . $pattern . '#'; |
| 196 |
} |
| 197 |
// Suppress errors to prevent site breakage from malformed patterns. |
| 198 |
set_error_handler(function (int $errno, string $errstr, string $errfile = '', int $errline = 0): bool { return false; }, E_WARNING); |
| 199 |
$matched = @preg_match($pattern, $url); |
| 200 |
restore_error_handler(); |
| 201 |
return $matched === 1; |
| 202 |
} |
| 203 |
|
| 204 |
// Non-regex: fnmatch-style pattern with * as wildcard, case-insensitive. |
| 205 |
// fnmatch is not available on all Windows PHP builds, so fall back to |
| 206 |
// a manual conversion via the approach used by the rest of the codebase. |
| 207 |
if (function_exists('fnmatch')) { |
| 208 |
return fnmatch($pattern, $url, FNM_CASEFOLD | FNM_PATHNAME) || |
| 209 |
fnmatch($pattern, $url, FNM_CASEFOLD); |
| 210 |
} |
| 211 |
|
| 212 |
// Fallback: convert * wildcard to a regex. |
| 213 |
$regex = '/^' . str_replace( |
| 214 |
['\\*', '\\?'], |
| 215 |
['.*', '.'], |
| 216 |
preg_quote($pattern, '/') |
| 217 |
) . '$/i'; |
| 218 |
return (bool)preg_match($regex, $url); |
| 219 |
} |
| 220 |
|
| 221 |
/** |
| 222 |
* Filter $allEngines to only those listed in the profile's enabled_engines JSON. |
| 223 |
* |
| 224 |
* If enabled_engines is empty or malformed, all engines are returned (fail-open). |
| 225 |
* |
| 226 |
* @param array<int, mixed> $allEngines |
| 227 |
* @param object $profile |
| 228 |
* @return array<int, mixed> |
| 229 |
*/ |
| 230 |
private function filterEnginesByProfile(array $allEngines, object $profile): array { |
| 231 |
$enabledLower = $this->decodeEnabledEnginesLower($profile); |
| 232 |
if ($enabledLower === null || empty($enabledLower)) { |
| 233 |
// Empty/malformed list — no restriction (fail-open). |
| 234 |
return $allEngines; |
| 235 |
} |
| 236 |
|
| 237 |
$filtered = array_values(array_filter($allEngines, function ($engine) use ($enabledLower) { |
| 238 |
if (!is_object($engine)) { |
| 239 |
return false; |
| 240 |
} |
| 241 |
return $this->classMatchesEnabledList(get_class($engine), $enabledLower); |
| 242 |
})); |
| 243 |
|
| 244 |
return $filtered; |
| 245 |
} |
| 246 |
|
| 247 |
/** |
| 248 |
* Parse enabled_engines JSON and normalize class names to lowercase. |
| 249 |
* |
| 250 |
* @param object $profile |
| 251 |
* @return array<int, string>|null Null when empty/missing/malformed. |
| 252 |
*/ |
| 253 |
private function decodeEnabledEnginesLower(object $profile): ?array { |
| 254 |
$json = isset($profile->enabled_engines) ? (string)$profile->enabled_engines : ''; |
| 255 |
if (trim($json) === '') { |
| 256 |
return null; |
| 257 |
} |
| 258 |
|
| 259 |
$enabledClassNames = json_decode($json, true); |
| 260 |
if (!is_array($enabledClassNames) || empty($enabledClassNames)) { |
| 261 |
return null; |
| 262 |
} |
| 263 |
|
| 264 |
$enabledLower = array_values(array_filter(array_map(function ($name) { |
| 265 |
return is_scalar($name) ? strtolower((string)$name) : ''; |
| 266 |
}, $enabledClassNames), function ($name) { |
| 267 |
return $name !== ''; |
| 268 |
})); |
| 269 |
|
| 270 |
return empty($enabledLower) ? null : $enabledLower; |
| 271 |
} |
| 272 |
|
| 273 |
/** |
| 274 |
* Case-insensitive class-name check with suffix matching compatibility. |
| 275 |
* |
| 276 |
* @param string $className |
| 277 |
* @param array<int, string> $enabledLower |
| 278 |
* @return bool |
| 279 |
*/ |
| 280 |
private function classMatchesEnabledList(string $className, array $enabledLower): bool { |
| 281 |
$classLower = strtolower($className); |
| 282 |
foreach ($enabledLower as $allowed) { |
| 283 |
if ($classLower === $allowed || substr($classLower, -strlen($allowed)) === $allowed) { |
| 284 |
return true; |
| 285 |
} |
| 286 |
} |
| 287 |
return false; |
| 288 |
} |
| 289 |
|
| 290 |
/** |
| 291 |
* @return string The fully-prefixed table name. |
| 292 |
*/ |
| 293 |
private function getTableName(): string { |
| 294 |
global $wpdb; |
| 295 |
return strtolower($wpdb->prefix) . 'abj404_engine_profiles'; |
| 296 |
} |
| 297 |
|
| 298 |
/** |
| 299 |
* Check if the engine profiles table exists in the current database. |
| 300 |
* |
| 301 |
* @param string $table |
| 302 |
* @return bool |
| 303 |
*/ |
| 304 |
private function tableExists(string $table): bool { |
| 305 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 306 |
'SHOW TABLES LIKE %s', |
| 307 |
['query_params' => [$table]] |
| 308 |
); |
| 309 |
$rows = isset($queryResult['rows']) && is_array($queryResult['rows']) ? $queryResult['rows'] : []; |
| 310 |
$first = $rows[0] ?? null; |
| 311 |
if (!is_array($first)) { |
| 312 |
return false; |
| 313 |
} |
| 314 |
$firstValue = reset($first); |
| 315 |
return $firstValue === $table; |
| 316 |
} |
| 317 |
|
| 318 |
/** |
| 319 |
* Insert or update a profile row. |
| 320 |
* |
| 321 |
* @param array<string, mixed> $data |
| 322 |
* @return int|false Inserted/updated row ID, or false on failure. |
| 323 |
*/ |
| 324 |
public function saveProfile(array $data) { |
| 325 |
$table = $this->getTableName(); |
| 326 |
|
| 327 |
$id = isset($data['id']) && is_numeric($data['id']) ? (int)$data['id'] : 0; |
| 328 |
|
| 329 |
$name = isset($data['name']) ? sanitize_text_field(is_string($data['name']) ? $data['name'] : '') : ''; |
| 330 |
$urlPattern = isset($data['url_pattern']) ? wp_unslash(is_string($data['url_pattern']) ? $data['url_pattern'] : '') : ''; |
| 331 |
$isRegex = isset($data['is_regex']) ? (int)(bool)$data['is_regex'] : 0; |
| 332 |
$enabledEngines = isset($data['enabled_engines']) ? (is_string($data['enabled_engines']) ? $data['enabled_engines'] : '[]') : '[]'; |
| 333 |
$priority = isset($data['priority']) ? (is_numeric($data['priority']) ? (int)$data['priority'] : 0) : 0; |
| 334 |
$status = isset($data['status']) ? (int)(bool)$data['status'] : 1; |
| 335 |
|
| 336 |
// Validate enabled_engines is valid JSON array. |
| 337 |
$decoded = json_decode($enabledEngines, true); |
| 338 |
if (!is_array($decoded)) { |
| 339 |
$enabledEngines = '[]'; |
| 340 |
} |
| 341 |
|
| 342 |
if ($id > 0) { |
| 343 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 344 |
"UPDATE `{$table}` |
| 345 |
SET `name` = %s, `url_pattern` = %s, `is_regex` = %d, |
| 346 |
`enabled_engines` = %s, `priority` = %d, `status` = %d |
| 347 |
WHERE `id` = %d", |
| 348 |
['query_params' => [$name, $urlPattern, $isRegex, $enabledEngines, $priority, $status, $id]] |
| 349 |
); |
| 350 |
$this->cachedProfiles = null; |
| 351 |
$updateError = isset($queryResult['last_error']) && is_string($queryResult['last_error']) ? $queryResult['last_error'] : ''; |
| 352 |
return $updateError === '' ? $id : false; |
| 353 |
} |
| 354 |
|
| 355 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 356 |
"INSERT INTO `{$table}` (`name`, `url_pattern`, `is_regex`, `enabled_engines`, `priority`, `status`) |
| 357 |
VALUES (%s, %s, %d, %s, %d, %d)", |
| 358 |
['query_params' => [$name, $urlPattern, $isRegex, $enabledEngines, $priority, $status]] |
| 359 |
); |
| 360 |
$this->cachedProfiles = null; |
| 361 |
$lastError = isset($queryResult['last_error']) && is_string($queryResult['last_error']) ? $queryResult['last_error'] : ''; |
| 362 |
if ($lastError !== '') { |
| 363 |
return false; |
| 364 |
} |
| 365 |
$insertId = isset($queryResult['insert_id']) && is_scalar($queryResult['insert_id']) ? (int)$queryResult['insert_id'] : 0; |
| 366 |
return $insertId > 0 ? $insertId : false; |
| 367 |
} |
| 368 |
|
| 369 |
/** |
| 370 |
* Delete a profile by ID. |
| 371 |
* |
| 372 |
* @param int $id |
| 373 |
* @return bool |
| 374 |
*/ |
| 375 |
public function deleteProfile(int $id): bool { |
| 376 |
$table = $this->getTableName(); |
| 377 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 378 |
"DELETE FROM `{$table}` WHERE `id` = %d", |
| 379 |
['query_params' => [$id]] |
| 380 |
); |
| 381 |
$this->cachedProfiles = null; |
| 382 |
$deleteError = isset($queryResult['last_error']) && is_string($queryResult['last_error']) ? $queryResult['last_error'] : ''; |
| 383 |
return $deleteError === ''; |
| 384 |
} |
| 385 |
|
| 386 |
/** |
| 387 |
* Return all profiles (including inactive) for admin display. |
| 388 |
* |
| 389 |
* @return array<int, array<string, mixed>> |
| 390 |
*/ |
| 391 |
public function getAllProfilesForAdmin(): array { |
| 392 |
$table = $this->getTableName(); |
| 393 |
|
| 394 |
if (!$this->tableExists($table)) { |
| 395 |
return []; |
| 396 |
} |
| 397 |
|
| 398 |
$queryResult = $this->dbCore()->queryAndGetResults( |
| 399 |
"SELECT `id`, `name`, `url_pattern`, `is_regex`, `enabled_engines`, `priority`, `status` |
| 400 |
FROM `{$table}` |
| 401 |
ORDER BY `priority` ASC, `id` ASC" |
| 402 |
); |
| 403 |
$rows = $queryResult['rows'] ?? []; |
| 404 |
|
| 405 |
return is_array($rows) ? $rows : []; |
| 406 |
} |
| 407 |
|
| 408 |
/** |
| 409 |
* Reset the request-level cache (used in tests). |
| 410 |
* |
| 411 |
* @return void |
| 412 |
*/ |
| 413 |
public function clearCache(): void { |
| 414 |
$this->cachedProfiles = null; |
| 415 |
} |
| 416 |
} |
| 417 |
|
