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[DependencyInjection] Prevent a loop in aliases within the findDefinition method #25364

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Merged
merged 1 commit into from
Dec 7, 2017
Merged

[DependencyInjection] Prevent a loop in aliases within the findDefinition method #25364

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7 changes: 7 additions & 0 deletions src/Symfony/Component/DependencyInjection/ContainerBuilder.php
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Original file line number Diff line number Diff line change
Expand Up @@ -993,8 +993,15 @@ public function findDefinition($id)
{
$id = $this->normalizeId($id);

$seen = array();
while (isset($this->aliasDefinitions[$id])) {
$id = (string) $this->aliasDefinitions[$id];

if (isset($seen[$id])) {
throw new ServiceCircularReferenceException($id, array_keys($seen));
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The message should be improved see the CheckCircularReferencePass

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What do you mean?

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@nicolas-grekas nicolas-grekas Dec 7, 2017 •
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Sorry was on mobile :)
This is what I mean:

if (isset($seen[$id])) {
    $seen = array_slice($seen, array_search($id, $seen));
    $seen[] = $id;

    throw new ServiceCircularReferenceException($id, $seen);
}

$seen[$id] = $id;

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I see the idea. Tho, we can't use array_slice with string keys in an array, we'll have to use 2 of them.

}

$seen[$id] = true;
}

return $this->getDefinition($id);
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16 changes: 16 additions & 0 deletions src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
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Expand Up @@ -1044,6 +1044,22 @@ public function testInlinedDefinitions()
$this->assertNotSame($bar->foo, $barUser->foo);
}

/**
* @expectedException \Symfony\Component\DependencyInjection\Exception\ServiceCircularReferenceException
* @expectedExceptionMessage Circular reference detected for service "app.test_class", path: "app.test_class -> App\TestClass".
*/
public function testThrowsCircularExceptionForCircularAliases()
{
$builder = new ContainerBuilder();

$builder->setAliases(array(
'app.test_class' => new Alias('App\\TestClass'),
'App\\TestClass' => new Alias('app.test_class'),
));

$builder->findDefinition('App\\TestClass');
}

public function testInitializePropertiesBeforeMethodCalls()
{
$container = new ContainerBuilder();
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