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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Routing\Matcher;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Routing\Exception\ExceptionInterface;
use Symfony\Component\Routing\Route;
use Symfony\Component\Routing\RouteCollection;
/**
* TraceableUrlMatcher helps debug path info matching by tracing the match.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
class TraceableUrlMatcher extends UrlMatcher
{
const ROUTE_DOES_NOT_MATCH = 0;
const ROUTE_ALMOST_MATCHES = 1;
const ROUTE_MATCHES = 2;
protected $traces;
public function getTraces($pathinfo)
{
$this->traces = [];
try {
$this->match($pathinfo);
} catch (ExceptionInterface $e) {
}
return $this->traces;
}
public function getTracesForRequest(Request $request)
{
$this->request = $request;
$traces = $this->getTraces($request->getPathInfo());
$this->request = null;
return $traces;
}
protected function matchCollection($pathinfo, RouteCollection $routes)
{
foreach ($routes as $name => $route) {
$compiledRoute = $route->compile();
if (!preg_match($compiledRoute->getRegex(), $pathinfo, $matches)) {
// does it match without any requirements?
$r = new Route($route->getPath(), $route->getDefaults(), [], $route->getOptions());
$cr = $r->compile();
if (!preg_match($cr->getRegex(), $pathinfo)) {
$this->addTrace(sprintf('Path "%s" does not match', $route->getPath()), self::ROUTE_DOES_NOT_MATCH, $name, $route);
continue;
}
foreach ($route->getRequirements() as $n => $regex) {
$r = new Route($route->getPath(), $route->getDefaults(), [$n => $regex], $route->getOptions());
$cr = $r->compile();
if (\in_array($n, $cr->getVariables()) && !preg_match($cr->getRegex(), $pathinfo)) {
$this->addTrace(sprintf('Requirement for "%s" does not match (%s)', $n, $regex), self::ROUTE_ALMOST_MATCHES, $name, $route);
continue 2;
}
}
continue;
}
// check host requirement
$hostMatches = [];
if ($compiledRoute->getHostRegex() && !preg_match($compiledRoute->getHostRegex(), $this->context->getHost(), $hostMatches)) {
$this->addTrace(sprintf('Host "%s" does not match the requirement ("%s")', $this->context->getHost(), $route->getHost()), self::ROUTE_ALMOST_MATCHES, $name, $route);
continue;
}
// check HTTP method requirement
if ($requiredMethods = $route->getMethods()) {
// HEAD and GET are equivalent as per RFC
if ('HEAD' === $method = $this->context->getMethod()) {
$method = 'GET';
}
if (!\in_array($method, $requiredMethods)) {
$this->allow = array_merge($this->allow, $requiredMethods);
$this->addTrace(sprintf('Method "%s" does not match any of the required methods (%s)', $this->context->getMethod(), implode(', ', $requiredMethods)), self::ROUTE_ALMOST_MATCHES, $name, $route);
continue;
}
}
// check condition
if ($condition = $route->getCondition()) {
if (!$this->getExpressionLanguage()->evaluate($condition, ['context' => $this->context, 'request' => $this->request ?: $this->createRequest($pathinfo)])) {
$this->addTrace(sprintf('Condition "%s" does not evaluate to "true"', $condition), self::ROUTE_ALMOST_MATCHES, $name, $route);
continue;
}
}
// check HTTP scheme requirement
if ($requiredSchemes = $route->getSchemes()) {
$scheme = $this->context->getScheme();
if (!$route->hasScheme($scheme)) {
$this->addTrace(sprintf('Scheme "%s" does not match any of the required schemes (%s); the user will be redirected to first required scheme', $scheme, implode(', ', $requiredSchemes)), self::ROUTE_ALMOST_MATCHES, $name, $route);
return true;
}
}
$this->addTrace('Route matches!', self::ROUTE_MATCHES, $name, $route);
return true;
}
}
private function addTrace($log, $level = self::ROUTE_DOES_NOT_MATCH, $name = null, $route = null)
{
$this->traces[] = [
'log' => $log,
'name' => $name,
'level' => $level,
'path' => null !== $route ? $route->getPath() : null,
];
}
}
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