From: Nicolas Grekas <nicolas.grekas@gmail.com>
Date: Tue, 2 Apr 2019 19:55:56 +0200
Subject: [DI] Check service IDs are valid

Origin: upstream, https://github.com/symfony/symfony/commit/d2fb5893923292a1da7985f0b56960b5bb10737b
---
 .../LazyProxy/PhpDumper/ProxyDumper.php            |   2 +-
 .../DependencyInjection/ContainerBuilder.php       |   8 +
 .../DependencyInjection/Dumper/PhpDumper.php       |  33 ++--
 .../Tests/ContainerBuilderTest.php                 |  32 ++++
 .../Tests/Dumper/PhpDumperTest.php                 |   8 +-
 .../Tests/Fixtures/php/services33.php              |   4 +-
 .../Tests/Fixtures/php/services_adawson.php        |  46 +++---
 .../Fixtures/php/services_inline_requires.php      |   8 +-
 .../Fixtures/php/services_inline_self_ref.php      |   2 +-
 .../Tests/Fixtures/php/services_rot13_env.php      |   4 +-
 .../Tests/Fixtures/php/services_subscriber.php     |  12 +-
 .../php/services_unsupported_characters.php        | 178 +++++++++++++++++++++
 12 files changed, 283 insertions(+), 54 deletions(-)
 create mode 100644 src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_unsupported_characters.php

diff --git a/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php b/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
index 480a5a5..4ee40de 100644
--- a/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
+++ b/src/Symfony/Bridge/ProxyManager/LazyProxy/PhpDumper/ProxyDumper.php
@@ -58,7 +58,7 @@ class ProxyDumper implements DumperInterface
         $instantiation = 'return';
 
         if ($definition->isShared()) {
-            $instantiation .= sprintf(' $this->%s[\'%s\'] =', \method_exists(ContainerBuilder::class, 'addClassResource') || ($definition->isPublic() && !$definition->isPrivate()) ? 'services' : 'privates', $id);
+            $instantiation .= sprintf(' $this->%s[%s] =', \method_exists(ContainerBuilder::class, 'addClassResource') || ($definition->isPublic() && !$definition->isPrivate()) ? 'services' : 'privates', var_export($id, true));
         }
 
         if (null === $factoryCode) {
diff --git a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
index 0c1966a..545dc96 100644
--- a/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
+++ b/src/Symfony/Component/DependencyInjection/ContainerBuilder.php
@@ -866,6 +866,10 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
     {
         $alias = $this->normalizeId($alias);
 
+        if ('' === $alias || '\\' === substr($alias, -1) || \strlen($alias) !== strcspn($alias, "\0\r\n'")) {
+            throw new InvalidArgumentException(sprintf('Invalid alias id: "%s"', $alias));
+        }
+
         if (\is_string($id)) {
             $id = new Alias($this->normalizeId($id));
         } elseif (!$id instanceof Alias) {
@@ -1019,6 +1023,10 @@ class ContainerBuilder extends Container implements TaggedContainerInterface
 
         $id = $this->normalizeId($id);
 
+        if ('' === $id || '\\' === substr($id, -1) || \strlen($id) !== strcspn($id, "\0\r\n'")) {
+            throw new InvalidArgumentException(sprintf('Invalid service id: "%s"', $id));
+        }
+
         unset($this->aliasDefinitions[$id], $this->removedIds[$id]);
 
         return $this->definitions[$id] = $definition;
diff --git a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
index 0a1385e..73c868f 100644
--- a/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+++ b/src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
@@ -483,7 +483,7 @@ EOF;
         $instantiation = '';
 
         if (!$isProxyCandidate && $definition->isShared()) {
-            $instantiation = "\$this->services['$id'] = ".($isSimpleInstance ? '' : '$instance');
+            $instantiation = sprintf('$this->services[%s] = %s', $this->doExport($id), $isSimpleInstance ? '' : '$instance');
         } elseif (!$isSimpleInstance) {
             $instantiation = '$instance';
         }
@@ -679,6 +679,9 @@ EOF;
      * Gets the $public '$id'$shared$autowired service.
      *
      * $return
+EOF;
+            $code = str_replace('*/', ' ', $code).<<<EOF
+
      */
     protected function {$methodName}($lazyInitialization)
     {
@@ -693,7 +696,7 @@ EOF;
 
         if ($this->getProxyDumper()->isProxyCandidate($definition)) {
             $factoryCode = $asFile ? "\$this->load('%s.php', false)" : '$this->%s(false)';
-            $code .= $this->getProxyDumper()->getProxyFactoryCode($definition, $id, sprintf($factoryCode, $methodName));
+            $code .= $this->getProxyDumper()->getProxyFactoryCode($definition, $id, sprintf($factoryCode, $methodName, $this->doExport($id)));
         }
 
         if ($definition->isDeprecated()) {
@@ -767,14 +770,14 @@ EOF;
 
         $code .= sprintf(<<<'EOTXT'
 
-        if (isset($this->%s['%s'])) {
-            return $this->%1$s['%2$s'];
+        if (isset($this->%s[%s])) {
+            return $this->%1$s[%2$s];
         }
 
 EOTXT
             ,
             'services',
-            $id
+            $this->doExport($id)
         );
 
         return $code;
@@ -1530,14 +1533,14 @@ EOF;
             if (!$this->container->hasDefinition($service)) {
                 return 'false';
             }
-            $conditions[] = sprintf("isset(\$this->services['%s'])", $service);
+            $conditions[] = sprintf('isset($this->services[%s])', $this->doExport($service));
         }
         foreach (ContainerBuilder::getServiceConditionals($value) as $service) {
             if ($this->container->hasDefinition($service) && !$this->container->getDefinition($service)->isPublic()) {
                 continue;
             }
 
-            $conditions[] = sprintf("\$this->has('%s')", $service);
+            $conditions[] = sprintf('$this->has(%s)', $this->doExport($service));
         }
 
         if (!$conditions) {
@@ -1776,6 +1779,8 @@ EOF;
      */
     private function dumpParameter($name)
     {
+        $name = (string) $name;
+
         if ($this->container->isCompiled() && $this->container->hasParameter($name)) {
             $value = $this->container->getParameter($name);
             $dumpedValue = $this->dumpValue($value, false);
@@ -1785,11 +1790,11 @@ EOF;
             }
 
             if (!preg_match("/\\\$this->(?:getEnv\('(?:\w++:)*+\w++'\)|targetDirs\[\d++\])/", $dumpedValue)) {
-                return sprintf("\$this->parameters['%s']", $name);
+                return sprintf('$this->parameters[%s]', $this->doExport($name));
             }
         }
 
-        return sprintf("\$this->getParameter('%s')", $name);
+        return sprintf('$this->getParameter(%s)', $this->doExport($name));
     }
 
     /**
@@ -1813,7 +1818,7 @@ EOF;
 
         if ($this->container->hasDefinition($id) && $definition = $this->container->getDefinition($id)) {
             if ($definition->isSynthetic()) {
-                $code = sprintf('$this->get(\'%s\'%s)', $id, null !== $reference ? ', '.$reference->getInvalidBehavior() : '');
+                $code = sprintf('$this->get(%s%s)', $this->doExport($id), null !== $reference ? ', '.$reference->getInvalidBehavior() : '');
             } elseif (null !== $reference && ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $reference->getInvalidBehavior()) {
                 $code = 'null';
                 if (!$definition->isShared()) {
@@ -1822,7 +1827,7 @@ EOF;
             } elseif ($this->isTrivialInstance($definition)) {
                 $code = substr($this->addNewInstance($definition, '', '', $id), 8, -2);
                 if ($definition->isShared()) {
-                    $code = sprintf('$this->services[\'%s\'] = %s', $id, $code);
+                    $code = sprintf('$this->services[%s] = %s', $this->doExport($id), $code);
                 }
                 $code = "($code)";
             } elseif ($this->asFiles && $definition->isShared() && !$this->isHotPath($definition)) {
@@ -1833,14 +1838,14 @@ EOF;
         } elseif (null !== $reference && ContainerInterface::IGNORE_ON_UNINITIALIZED_REFERENCE === $reference->getInvalidBehavior()) {
             return 'null';
         } elseif (null !== $reference && ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE !== $reference->getInvalidBehavior()) {
-            $code = sprintf('$this->get(\'%s\', /* ContainerInterface::NULL_ON_INVALID_REFERENCE */ %d)', $id, ContainerInterface::NULL_ON_INVALID_REFERENCE);
+            $code = sprintf('$this->get(%s, /* ContainerInterface::NULL_ON_INVALID_REFERENCE */ %d)', $this->doExport($id), ContainerInterface::NULL_ON_INVALID_REFERENCE);
         } else {
-            $code = sprintf('$this->get(\'%s\')', $id);
+            $code = sprintf('$this->get(%s)', $this->doExport($id));
         }
 
         // The following is PHP 5.5 syntax for what could be written as "(\$this->services['$id'] ?? $code)" on PHP>=7.0
 
-        return "\${(\$_ = isset(\$this->services['$id']) ? \$this->services['$id'] : $code) && false ?: '_'}";
+        return sprintf("\${(\$_ = isset(\$this->services[%s]) ? \$this->services[%1\$s] : %s) && false ?: '_'}", $this->doExport($id), $code);
     }
 
     /**
diff --git a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
index 40afaa1..73cb670 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/ContainerBuilderTest.php
@@ -195,6 +195,38 @@ class ContainerBuilderTest extends TestCase
         $this->assertNotSame($builder->get('bar'), $builder->get('bar'));
     }
 
+    /**
+     * @expectedException \Symfony\Component\DependencyInjection\Exception\InvalidArgumentException
+     * @dataProvider provideBadId
+     */
+    public function testBadAliasId($id)
+    {
+        $builder = new ContainerBuilder();
+        $builder->setAlias($id, 'foo');
+    }
+
+    /**
+     * @expectedException \Symfony\Component\DependencyInjection\Exception\InvalidArgumentException
+     * @dataProvider provideBadId
+     */
+    public function testBadDefinitionId($id)
+    {
+        $builder = new ContainerBuilder();
+        $builder->setDefinition($id, new Definition('Foo'));
+    }
+
+    public function provideBadId()
+    {
+        return [
+            [''],
+            ["\0"],
+            ["\r"],
+            ["\n"],
+            ["'"],
+            ['ab\\'],
+        ];
+    }
+
     /**
      * @expectedException        \Symfony\Component\DependencyInjection\Exception\RuntimeException
      * @expectedExceptionMessage You have requested a synthetic service ("foo"). The DIC does not know how to construct this service.
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
index 6d985ea..761f7ef 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Dumper/PhpDumperTest.php
@@ -234,12 +234,18 @@ class PhpDumperTest extends TestCase
     {
         $class = 'Symfony_DI_PhpDumper_Test_Unsupported_Characters';
         $container = new ContainerBuilder();
+        $container->setParameter("'", 'oh-no');
+        $container->register("foo*/oh-no", 'FooClass')->setPublic(true);
         $container->register('bar$', 'FooClass')->setPublic(true);
         $container->register('bar$!', 'FooClass')->setPublic(true);
         $container->compile();
         $dumper = new PhpDumper($container);
-        eval('?>'.$dumper->dump(['class' => $class]));
 
+        $this->assertStringEqualsFile(self::$fixturesPath.'/php/services_unsupported_characters.php', $dumper->dump(['class' => $class]));
+
+        require_once self::$fixturesPath.'/php/services_unsupported_characters.php';
+
+        $this->assertTrue(method_exists($class, 'getFooOhNoService'));
         $this->assertTrue(method_exists($class, 'getBarService'));
         $this->assertTrue(method_exists($class, 'getBar2Service'));
     }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
index 98e34bc..d4019a5 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services33.php
@@ -66,7 +66,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getFooService()
     {
-        return $this->services['Bar\Foo'] = new \Bar\Foo();
+        return $this->services['Bar\\Foo'] = new \Bar\Foo();
     }
 
     /**
@@ -76,6 +76,6 @@ class ProjectServiceContainer extends Container
      */
     protected function getFoo2Service()
     {
-        return $this->services['Foo\Foo'] = new \Foo\Foo();
+        return $this->services['Foo\\Foo'] = new \Foo\Foo();
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
index f222fc6..7986897 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_adawson.php
@@ -88,10 +88,10 @@ class ProjectServiceContainer extends Container
      */
     protected function getBusService()
     {
-        $this->services['App\Bus'] = $instance = new \App\Bus(${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'});
+        $this->services['App\\Bus'] = $instance = new \App\Bus(${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'});
 
-        $instance->handler1 = ${($_ = isset($this->services['App\Handler1']) ? $this->services['App\Handler1'] : $this->getHandler1Service()) && false ?: '_'};
-        $instance->handler2 = ${($_ = isset($this->services['App\Handler2']) ? $this->services['App\Handler2'] : $this->getHandler2Service()) && false ?: '_'};
+        $instance->handler1 = ${($_ = isset($this->services['App\\Handler1']) ? $this->services['App\\Handler1'] : $this->getHandler1Service()) && false ?: '_'};
+        $instance->handler2 = ${($_ = isset($this->services['App\\Handler2']) ? $this->services['App\\Handler2'] : $this->getHandler2Service()) && false ?: '_'};
 
         return $instance;
     }
@@ -103,9 +103,9 @@ class ProjectServiceContainer extends Container
      */
     protected function getDbService()
     {
-        $this->services['App\Db'] = $instance = new \App\Db();
+        $this->services['App\\Db'] = $instance = new \App\Db();
 
-        $instance->schema = ${($_ = isset($this->services['App\Schema']) ? $this->services['App\Schema'] : $this->getSchemaService()) && false ?: '_'};
+        $instance->schema = ${($_ = isset($this->services['App\\Schema']) ? $this->services['App\\Schema'] : $this->getSchemaService()) && false ?: '_'};
 
         return $instance;
     }
@@ -117,13 +117,13 @@ class ProjectServiceContainer extends Container
      */
     protected function getHandler1Service()
     {
-        $a = ${($_ = isset($this->services['App\Processor']) ? $this->services['App\Processor'] : $this->getProcessorService()) && false ?: '_'};
+        $a = ${($_ = isset($this->services['App\\Processor']) ? $this->services['App\\Processor'] : $this->getProcessorService()) && false ?: '_'};
 
-        if (isset($this->services['App\Handler1'])) {
-            return $this->services['App\Handler1'];
+        if (isset($this->services['App\\Handler1'])) {
+            return $this->services['App\\Handler1'];
         }
 
-        return $this->services['App\Handler1'] = new \App\Handler1(${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'}, ${($_ = isset($this->services['App\Schema']) ? $this->services['App\Schema'] : $this->getSchemaService()) && false ?: '_'}, $a);
+        return $this->services['App\\Handler1'] = new \App\Handler1(${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'}, ${($_ = isset($this->services['App\\Schema']) ? $this->services['App\\Schema'] : $this->getSchemaService()) && false ?: '_'}, $a);
     }
 
     /**
@@ -133,13 +133,13 @@ class ProjectServiceContainer extends Container
      */
     protected function getHandler2Service()
     {
-        $a = ${($_ = isset($this->services['App\Processor']) ? $this->services['App\Processor'] : $this->getProcessorService()) && false ?: '_'};
+        $a = ${($_ = isset($this->services['App\\Processor']) ? $this->services['App\\Processor'] : $this->getProcessorService()) && false ?: '_'};
 
-        if (isset($this->services['App\Handler2'])) {
-            return $this->services['App\Handler2'];
+        if (isset($this->services['App\\Handler2'])) {
+            return $this->services['App\\Handler2'];
         }
 
-        return $this->services['App\Handler2'] = new \App\Handler2(${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'}, ${($_ = isset($this->services['App\Schema']) ? $this->services['App\Schema'] : $this->getSchemaService()) && false ?: '_'}, $a);
+        return $this->services['App\\Handler2'] = new \App\Handler2(${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'}, ${($_ = isset($this->services['App\\Schema']) ? $this->services['App\\Schema'] : $this->getSchemaService()) && false ?: '_'}, $a);
     }
 
     /**
@@ -149,13 +149,13 @@ class ProjectServiceContainer extends Container
      */
     protected function getProcessorService()
     {
-        $a = ${($_ = isset($this->services['App\Registry']) ? $this->services['App\Registry'] : $this->getRegistryService()) && false ?: '_'};
+        $a = ${($_ = isset($this->services['App\\Registry']) ? $this->services['App\\Registry'] : $this->getRegistryService()) && false ?: '_'};
 
-        if (isset($this->services['App\Processor'])) {
-            return $this->services['App\Processor'];
+        if (isset($this->services['App\\Processor'])) {
+            return $this->services['App\\Processor'];
         }
 
-        return $this->services['App\Processor'] = new \App\Processor($a, ${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'});
+        return $this->services['App\\Processor'] = new \App\Processor($a, ${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'});
     }
 
     /**
@@ -165,9 +165,9 @@ class ProjectServiceContainer extends Container
      */
     protected function getRegistryService()
     {
-        $this->services['App\Registry'] = $instance = new \App\Registry();
+        $this->services['App\\Registry'] = $instance = new \App\Registry();
 
-        $instance->processor = [0 => ${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'}, 1 => ${($_ = isset($this->services['App\Bus']) ? $this->services['App\Bus'] : $this->getBusService()) && false ?: '_'}];
+        $instance->processor = [0 => ${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'}, 1 => ${($_ = isset($this->services['App\\Bus']) ? $this->services['App\\Bus'] : $this->getBusService()) && false ?: '_'}];
 
         return $instance;
     }
@@ -179,12 +179,12 @@ class ProjectServiceContainer extends Container
      */
     protected function getSchemaService()
     {
-        $a = ${($_ = isset($this->services['App\Db']) ? $this->services['App\Db'] : $this->getDbService()) && false ?: '_'};
+        $a = ${($_ = isset($this->services['App\\Db']) ? $this->services['App\\Db'] : $this->getDbService()) && false ?: '_'};
 
-        if (isset($this->services['App\Schema'])) {
-            return $this->services['App\Schema'];
+        if (isset($this->services['App\\Schema'])) {
+            return $this->services['App\\Schema'];
         }
 
-        return $this->services['App\Schema'] = new \App\Schema($a);
+        return $this->services['App\\Schema'] = new \App\Schema($a);
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
index a23a693..59582d9 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_requires.php
@@ -87,7 +87,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getParentNotExistsService()
     {
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\ParentNotExists'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\ParentNotExists();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\ParentNotExists'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\ParentNotExists();
     }
 
     /**
@@ -97,7 +97,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getC1Service()
     {
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C1();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C1'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C1();
     }
 
     /**
@@ -110,7 +110,7 @@ class ProjectServiceContainer extends Container
         include_once $this->targetDirs[1].'/includes/HotPath/C2.php';
         include_once $this->targetDirs[1].'/includes/HotPath/C3.php';
 
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C2'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C2(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3())) && false ?: '_'});
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C2'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C2(${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3())) && false ?: '_'});
     }
 
     /**
@@ -122,7 +122,7 @@ class ProjectServiceContainer extends Container
     {
         include_once $this->targetDirs[1].'/includes/HotPath/C3.php';
 
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\includes\\HotPath\\C3'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\includes\HotPath\C3();
     }
 
     public function getParameter($name)
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
index a2573ea..271aeb6 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_inline_self_ref.php
@@ -69,7 +69,7 @@ class Symfony_DI_PhpDumper_Test_Inline_Self_Ref extends Container
         $b = new \App\Baz($a);
         $b->bar = $a;
 
-        $this->services['App\Foo'] = $instance = new \App\Foo($b);
+        $this->services['App\\Foo'] = $instance = new \App\Foo($b);
 
         $a->foo = $instance;
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
index 7c903b1..8d1465c 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_rot13_env.php
@@ -67,7 +67,7 @@ class Symfony_DI_PhpDumper_Test_Rot13Parameters extends Container
      */
     protected function getRot13EnvVarProcessorService()
     {
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor();
     }
 
     /**
@@ -78,7 +78,7 @@ class Symfony_DI_PhpDumper_Test_Rot13Parameters extends Container
     protected function getContainer_EnvVarProcessorsLocatorService()
     {
         return $this->services['container.env_var_processors_locator'] = new \Symfony\Component\DependencyInjection\ServiceLocator(['rot13' => function () {
-            return ${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor())) && false ?: '_'};
+            return ${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Dumper\\Rot13EnvVarProcessor'] = new \Symfony\Component\DependencyInjection\Tests\Dumper\Rot13EnvVarProcessor())) && false ?: '_'};
         }]);
     }
 
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
index 9424a76..dbb51ea 100644
--- a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_subscriber.php
@@ -73,7 +73,7 @@ class ProjectServiceContainer extends Container
      */
     protected function getTestServiceSubscriberService()
     {
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber();
     }
 
     /**
@@ -84,13 +84,13 @@ class ProjectServiceContainer extends Container
     protected function getFooServiceService()
     {
         return $this->services['foo_service'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber((new \Symfony\Component\DependencyInjection\ServiceLocator(['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition' => function () {
-            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
+            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
         }, 'Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber' => function () {
-            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
+            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
         }, 'bar' => function () {
-            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
+            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v) { return $v; }; return $f(${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\TestServiceSubscriber'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\TestServiceSubscriber())) && false ?: '_'});
         }, 'baz' => function () {
-            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition']) ? $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] : ($this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
+            $f = function (\Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition $v = null) { return $v; }; return $f(${($_ = isset($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition']) ? $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition'] : ($this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition())) && false ?: '_'});
         }]))->withContext('foo_service', $this));
     }
 
@@ -101,6 +101,6 @@ class ProjectServiceContainer extends Container
      */
     protected function getCustomDefinitionService()
     {
-        return $this->services['Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition();
+        return $this->services['Symfony\\Component\\DependencyInjection\\Tests\\Fixtures\\CustomDefinition'] = new \Symfony\Component\DependencyInjection\Tests\Fixtures\CustomDefinition();
     }
 }
diff --git a/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_unsupported_characters.php b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_unsupported_characters.php
new file mode 100644
index 0000000..a4c841c
--- /dev/null
+++ b/src/Symfony/Component/DependencyInjection/Tests/Fixtures/php/services_unsupported_characters.php
@@ -0,0 +1,178 @@
+<?php
+
+use Symfony\Component\DependencyInjection\Argument\RewindableGenerator;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+use Symfony\Component\DependencyInjection\Container;
+use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
+use Symfony\Component\DependencyInjection\Exception\LogicException;
+use Symfony\Component\DependencyInjection\Exception\RuntimeException;
+use Symfony\Component\DependencyInjection\ParameterBag\FrozenParameterBag;
+
+/**
+ * This class has been auto-generated
+ * by the Symfony Dependency Injection Component.
+ *
+ * @final since Symfony 3.3
+ */
+class Symfony_DI_PhpDumper_Test_Unsupported_Characters extends Container
+{
+    private $parameters;
+    private $targetDirs = [];
+
+    public function __construct()
+    {
+        $this->parameters = $this->getDefaultParameters();
+
+        $this->services = [];
+        $this->methodMap = [
+            'bar$' => 'getBarService',
+            'bar$!' => 'getBar2Service',
+            'foo*/oh-no' => 'getFooohnoService',
+        ];
+
+        $this->aliases = [];
+    }
+
+    public function getRemovedIds()
+    {
+        return [
+            'Psr\\Container\\ContainerInterface' => true,
+            'Symfony\\Component\\DependencyInjection\\ContainerInterface' => true,
+        ];
+    }
+
+    public function compile()
+    {
+        throw new LogicException('You cannot compile a dumped container that was already compiled.');
+    }
+
+    public function isCompiled()
+    {
+        return true;
+    }
+
+    public function isFrozen()
+    {
+        @trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Use the isCompiled() method instead.', __METHOD__), E_USER_DEPRECATED);
+
+        return true;
+    }
+
+    /**
+     * Gets the public 'bar$' shared service.
+     *
+     * @return \FooClass
+     */
+    protected function getBarService()
+    {
+        return $this->services['bar$'] = new \FooClass();
+    }
+
+    /**
+     * Gets the public 'bar$!' shared service.
+     *
+     * @return \FooClass
+     */
+    protected function getBar2Service()
+    {
+        return $this->services['bar$!'] = new \FooClass();
+    }
+
+    /**
+     * Gets the public 'foo oh-no' shared service.
+     *
+     * @return \FooClass
+     */
+    protected function getFooohnoService()
+    {
+        return $this->services['foo*/oh-no'] = new \FooClass();
+    }
+
+    public function getParameter($name)
+    {
+        $name = (string) $name;
+        if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
+            $name = $this->normalizeParameterName($name);
+
+            if (!(isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters))) {
+                throw new InvalidArgumentException(sprintf('The parameter "%s" must be defined.', $name));
+            }
+        }
+        if (isset($this->loadedDynamicParameters[$name])) {
+            return $this->loadedDynamicParameters[$name] ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+        }
+
+        return $this->parameters[$name];
+    }
+
+    public function hasParameter($name)
+    {
+        $name = (string) $name;
+        $name = $this->normalizeParameterName($name);
+
+        return isset($this->parameters[$name]) || isset($this->loadedDynamicParameters[$name]) || array_key_exists($name, $this->parameters);
+    }
+
+    public function setParameter($name, $value)
+    {
+        throw new LogicException('Impossible to call set() on a frozen ParameterBag.');
+    }
+
+    public function getParameterBag()
+    {
+        if (null === $this->parameterBag) {
+            $parameters = $this->parameters;
+            foreach ($this->loadedDynamicParameters as $name => $loaded) {
+                $parameters[$name] = $loaded ? $this->dynamicParameters[$name] : $this->getDynamicParameter($name);
+            }
+            $this->parameterBag = new FrozenParameterBag($parameters);
+        }
+
+        return $this->parameterBag;
+    }
+
+    private $loadedDynamicParameters = [];
+    private $dynamicParameters = [];
+
+    /**
+     * Computes a dynamic parameter.
+     *
+     * @param string $name The name of the dynamic parameter to load
+     *
+     * @return mixed The value of the dynamic parameter
+     *
+     * @throws InvalidArgumentException When the dynamic parameter does not exist
+     */
+    private function getDynamicParameter($name)
+    {
+        throw new InvalidArgumentException(sprintf('The dynamic parameter "%s" must be defined.', $name));
+    }
+
+    private $normalizedParameterNames = [];
+
+    private function normalizeParameterName($name)
+    {
+        if (isset($this->normalizedParameterNames[$normalizedName = strtolower($name)]) || isset($this->parameters[$normalizedName]) || array_key_exists($normalizedName, $this->parameters)) {
+            $normalizedName = isset($this->normalizedParameterNames[$normalizedName]) ? $this->normalizedParameterNames[$normalizedName] : $normalizedName;
+            if ((string) $name !== $normalizedName) {
+                @trigger_error(sprintf('Parameter names will be made case sensitive in Symfony 4.0. Using "%s" instead of "%s" is deprecated since Symfony 3.4.', $name, $normalizedName), E_USER_DEPRECATED);
+            }
+        } else {
+            $normalizedName = $this->normalizedParameterNames[$normalizedName] = (string) $name;
+        }
+
+        return $normalizedName;
+    }
+
+    /**
+     * Gets the default parameters.
+     *
+     * @return array An array of the default parameters
+     */
+    protected function getDefaultParameters()
+    {
+        return [
+            '\'' => 'oh-no',
+        ];
+    }
+}
