685 lines
25 KiB
PHP
685 lines
25 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\DependencyInjection\Loader;
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use Symfony\Component\Config\Resource\FileResource;
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use Symfony\Component\Config\Util\XmlUtils;
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use Symfony\Component\DependencyInjection\ContainerInterface;
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use Symfony\Component\DependencyInjection\Alias;
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use Symfony\Component\DependencyInjection\Argument\ClosureProxyArgument;
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use Symfony\Component\DependencyInjection\Argument\IteratorArgument;
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use Symfony\Component\DependencyInjection\Definition;
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use Symfony\Component\DependencyInjection\ChildDefinition;
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use Symfony\Component\DependencyInjection\Reference;
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use Symfony\Component\DependencyInjection\Exception\InvalidArgumentException;
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use Symfony\Component\DependencyInjection\Exception\RuntimeException;
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use Symfony\Component\ExpressionLanguage\Expression;
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/**
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* XmlFileLoader loads XML files service definitions.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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class XmlFileLoader extends FileLoader
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{
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const NS = 'http://symfony.com/schema/dic/services';
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/**
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* {@inheritdoc}
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*/
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public function load($resource, $type = null)
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{
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$path = $this->locator->locate($resource);
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$xml = $this->parseFileToDOM($path);
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$this->container->addResource(new FileResource($path));
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// anonymous services
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$this->processAnonymousServices($xml, $path);
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// imports
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$this->parseImports($xml, $path);
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// parameters
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$this->parseParameters($xml);
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// extensions
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$this->loadFromExtensions($xml);
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// services
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$this->parseDefinitions($xml, $path);
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}
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/**
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* {@inheritdoc}
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*/
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public function supports($resource, $type = null)
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{
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return is_string($resource) && 'xml' === pathinfo($resource, PATHINFO_EXTENSION);
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}
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/**
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* Parses parameters.
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*
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* @param \DOMDocument $xml
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*/
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private function parseParameters(\DOMDocument $xml)
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{
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if ($parameters = $this->getChildren($xml->documentElement, 'parameters')) {
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$this->container->getParameterBag()->add($this->getArgumentsAsPhp($parameters[0], 'parameter'));
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}
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}
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/**
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* Parses imports.
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*
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* @param \DOMDocument $xml
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* @param string $file
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*/
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private function parseImports(\DOMDocument $xml, $file)
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{
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$xpath = new \DOMXPath($xml);
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$xpath->registerNamespace('container', self::NS);
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if (false === $imports = $xpath->query('//container:imports/container:import')) {
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return;
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}
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$defaultDirectory = dirname($file);
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foreach ($imports as $import) {
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$this->setCurrentDir($defaultDirectory);
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$this->import($import->getAttribute('resource'), null, (bool) XmlUtils::phpize($import->getAttribute('ignore-errors')), $file);
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}
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}
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/**
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* Parses multiple definitions.
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*
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* @param \DOMDocument $xml
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* @param string $file
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*/
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private function parseDefinitions(\DOMDocument $xml, $file)
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{
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$xpath = new \DOMXPath($xml);
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$xpath->registerNamespace('container', self::NS);
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if (false === $services = $xpath->query('//container:services/container:service')) {
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return;
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}
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foreach ($services as $service) {
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if (null !== $definition = $this->parseDefinition($service, $file, $this->getServiceDefaults($xml, $file))) {
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$this->container->setDefinition((string) $service->getAttribute('id'), $definition);
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}
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}
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}
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/**
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* Get service defaults.
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*
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* @return array
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*/
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private function getServiceDefaults(\DOMDocument $xml, $file)
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{
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$xpath = new \DOMXPath($xml);
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$xpath->registerNamespace('container', self::NS);
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if (null === $defaultsNode = $xpath->query('//container:services/container:defaults')->item(0)) {
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return array();
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}
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$defaults = array(
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'tags' => $this->getChildren($defaultsNode, 'tag'),
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'autowire' => $this->getChildren($defaultsNode, 'autowire'),
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);
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foreach ($defaults['tags'] as $tag) {
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if ('' === $tag->getAttribute('name')) {
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throw new InvalidArgumentException(sprintf('The tag name for tag "<defaults>" in %s must be a non-empty string.', $file));
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}
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}
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if ($defaultsNode->hasAttribute('public')) {
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$defaults['public'] = XmlUtils::phpize($defaultsNode->getAttribute('public'));
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}
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if ($defaultsNode->hasAttribute('inherit-tags')) {
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$defaults['inherit-tags'] = XmlUtils::phpize($defaultsNode->getAttribute('inherit-tags'));
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}
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if (!$defaultsNode->hasAttribute('autowire')) {
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foreach ($defaults['autowire'] as $k => $v) {
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$defaults['autowire'][$k] = $v->textContent;
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}
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return $defaults;
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}
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if ($defaults['autowire']) {
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throw new InvalidArgumentException(sprintf('The "autowire" attribute cannot be used together with "<autowire>" tags for tag "<defaults>" in %s.', $file));
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}
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if (XmlUtils::phpize($defaultsNode->getAttribute('autowire'))) {
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$defaults['autowire'][] = '__construct';
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}
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return $defaults;
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}
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/**
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* Parses an individual Definition.
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*
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* @param \DOMElement $service
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* @param string $file
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* @param array $defaults
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*
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* @return Definition|null
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*/
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private function parseDefinition(\DOMElement $service, $file, array $defaults = array())
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{
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if ($alias = $service->getAttribute('alias')) {
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$this->validateAlias($service, $file);
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$public = true;
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if ($publicAttr = $service->getAttribute('public')) {
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$public = XmlUtils::phpize($publicAttr);
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} elseif (isset($defaults['public'])) {
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$public = $defaults['public'];
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}
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$this->container->setAlias((string) $service->getAttribute('id'), new Alias($alias, $public));
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return;
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}
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if ($parent = $service->getAttribute('parent')) {
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$definition = new ChildDefinition($parent);
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if ($value = $service->getAttribute('inherit-tags')) {
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$definition->setInheritTags(XmlUtils::phpize($value));
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} elseif (isset($defaults['inherit-tags'])) {
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$definition->setInheritTags($defaults['inherit-tags']);
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}
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$defaults = array();
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} else {
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$definition = new Definition();
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}
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if ($publicAttr = $service->getAttribute('public')) {
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$definition->setPublic(XmlUtils::phpize($publicAttr));
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} elseif (isset($defaults['public'])) {
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$definition->setPublic($defaults['public']);
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}
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foreach (array('class', 'shared', 'synthetic', 'lazy', 'abstract') as $key) {
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if ($value = $service->getAttribute($key)) {
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$method = 'set'.$key;
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$definition->$method(XmlUtils::phpize($value));
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}
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}
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if ($value = $service->getAttribute('autowire')) {
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$definition->setAutowired(XmlUtils::phpize($value));
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}
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if ($files = $this->getChildren($service, 'file')) {
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$definition->setFile($files[0]->nodeValue);
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}
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if ($deprecated = $this->getChildren($service, 'deprecated')) {
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$definition->setDeprecated(true, $deprecated[0]->nodeValue ?: null);
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}
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$definition->setArguments($this->getArgumentsAsPhp($service, 'argument'));
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$definition->setProperties($this->getArgumentsAsPhp($service, 'property'));
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if ($factories = $this->getChildren($service, 'factory')) {
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$factory = $factories[0];
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if ($function = $factory->getAttribute('function')) {
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$definition->setFactory($function);
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} else {
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$factoryService = $this->getChildren($factory, 'service');
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if (isset($factoryService[0])) {
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$class = $this->parseDefinition($factoryService[0], $file);
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} elseif ($childService = $factory->getAttribute('service')) {
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$class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, false);
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} else {
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$class = $factory->getAttribute('class');
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}
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$definition->setFactory(array($class, $factory->getAttribute('method')));
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}
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}
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if ($configurators = $this->getChildren($service, 'configurator')) {
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$configurator = $configurators[0];
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if ($function = $configurator->getAttribute('function')) {
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$definition->setConfigurator($function);
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} else {
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$configuratorService = $this->getChildren($configurator, 'service');
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if (isset($configuratorService[0])) {
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$class = $this->parseDefinition($configuratorService[0], $file);
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} elseif ($childService = $configurator->getAttribute('service')) {
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$class = new Reference($childService, ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE, false);
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} else {
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$class = $configurator->getAttribute('class');
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}
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$definition->setConfigurator(array($class, $configurator->getAttribute('method')));
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}
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}
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foreach ($this->getChildren($service, 'call') as $call) {
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$definition->addMethodCall($call->getAttribute('method'), $this->getArgumentsAsPhp($call, 'argument'));
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}
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$tags = $this->getChildren($service, 'tag');
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if (empty($defaults['tags'])) {
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// no-op
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} elseif (!$value = $service->getAttribute('inherit-tags')) {
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if (!$tags) {
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$tags = $defaults['tags'];
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}
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} elseif (XmlUtils::phpize($value)) {
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$tags = array_merge($tags, $defaults['tags']);
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}
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foreach ($tags as $tag) {
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$parameters = array();
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foreach ($tag->attributes as $name => $node) {
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if ('name' === $name) {
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continue;
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}
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if (false !== strpos($name, '-') && false === strpos($name, '_') && !array_key_exists($normalizedName = str_replace('-', '_', $name), $parameters)) {
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$parameters[$normalizedName] = XmlUtils::phpize($node->nodeValue);
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}
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// keep not normalized key
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$parameters[$name] = XmlUtils::phpize($node->nodeValue);
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}
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if ('' === $tag->getAttribute('name')) {
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throw new InvalidArgumentException(sprintf('The tag name for service "%s" in %s must be a non-empty string.', (string) $service->getAttribute('id'), $file));
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}
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$definition->addTag($tag->getAttribute('name'), $parameters);
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}
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foreach ($this->getChildren($service, 'autowiring-type') as $type) {
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$definition->addAutowiringType($type->textContent);
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}
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$autowireTags = array();
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foreach ($this->getChildren($service, 'autowire') as $type) {
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$autowireTags[] = $type->textContent;
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}
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if ($autowireTags) {
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if ($service->hasAttribute('autowire')) {
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throw new InvalidArgumentException(sprintf('The "autowire" attribute cannot be used together with "<autowire>" tags for service "%s" in %s.', (string) $service->getAttribute('id'), $file));
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}
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$definition->setAutowiredMethods($autowireTags);
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} elseif (!$service->hasAttribute('autowire') && !empty($defaults['autowire'])) {
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$definition->setAutowiredMethods($defaults['autowire']);
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}
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if ($value = $service->getAttribute('decorates')) {
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$renameId = $service->hasAttribute('decoration-inner-name') ? $service->getAttribute('decoration-inner-name') : null;
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$priority = $service->hasAttribute('decoration-priority') ? $service->getAttribute('decoration-priority') : 0;
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$definition->setDecoratedService($value, $renameId, $priority);
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}
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return $definition;
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}
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/**
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* Parses a XML file to a \DOMDocument.
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*
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* @param string $file Path to a file
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*
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* @return \DOMDocument
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*
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* @throws InvalidArgumentException When loading of XML file returns error
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*/
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private function parseFileToDOM($file)
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{
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try {
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$dom = XmlUtils::loadFile($file, array($this, 'validateSchema'));
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} catch (\InvalidArgumentException $e) {
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throw new InvalidArgumentException(sprintf('Unable to parse file "%s".', $file), $e->getCode(), $e);
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}
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$this->validateExtensions($dom, $file);
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return $dom;
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}
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/**
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* Processes anonymous services.
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*
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* @param \DOMDocument $xml
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* @param string $file
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*/
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private function processAnonymousServices(\DOMDocument $xml, $file)
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{
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$definitions = array();
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$count = 0;
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$xpath = new \DOMXPath($xml);
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$xpath->registerNamespace('container', self::NS);
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// anonymous services as arguments/properties
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if (false !== $nodes = $xpath->query('//container:argument[@type="service"][not(@id)]|//container:property[@type="service"][not(@id)]')) {
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foreach ($nodes as $node) {
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// give it a unique name
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$id = sprintf('%d_%s', ++$count, hash('sha256', $file));
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$node->setAttribute('id', $id);
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if ($services = $this->getChildren($node, 'service')) {
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$definitions[$id] = array($services[0], $file, false);
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$services[0]->setAttribute('id', $id);
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// anonymous services are always private
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// we could not use the constant false here, because of XML parsing
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$services[0]->setAttribute('public', 'false');
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}
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}
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}
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// anonymous services "in the wild"
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if (false !== $nodes = $xpath->query('//container:services/container:service[not(@id)]')) {
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foreach ($nodes as $node) {
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// give it a unique name
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$id = sprintf('%d_%s', ++$count, hash('sha256', $file));
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$node->setAttribute('id', $id);
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$definitions[$id] = array($node, $file, true);
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}
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}
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// resolve definitions
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uksort($definitions, 'strnatcmp');
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foreach (array_reverse($definitions) as $id => list($domElement, $file, $wild)) {
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if (null !== $definition = $this->parseDefinition($domElement, $file)) {
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$this->container->setDefinition($id, $definition);
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}
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if (true === $wild) {
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$tmpDomElement = new \DOMElement('_services', null, self::NS);
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$domElement->parentNode->replaceChild($tmpDomElement, $domElement);
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$tmpDomElement->setAttribute('id', $id);
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} else {
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$domElement->parentNode->removeChild($domElement);
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}
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}
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}
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/**
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* Returns arguments as valid php types.
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*
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* @param \DOMElement $node
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* @param string $name
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* @param bool $lowercase
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*
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* @return mixed
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*/
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private function getArgumentsAsPhp(\DOMElement $node, $name, $lowercase = true)
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{
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$arguments = array();
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foreach ($this->getChildren($node, $name) as $arg) {
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if ($arg->hasAttribute('name')) {
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$arg->setAttribute('key', $arg->getAttribute('name'));
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}
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// this is used by ChildDefinition to overwrite a specific
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// argument of the parent definition
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if ($arg->hasAttribute('index')) {
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$key = 'index_'.$arg->getAttribute('index');
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} elseif (!$arg->hasAttribute('key')) {
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// Append an empty argument, then fetch its key to overwrite it later
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$arguments[] = null;
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$keys = array_keys($arguments);
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$key = array_pop($keys);
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} else {
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$key = $arg->getAttribute('key');
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// parameter keys are case insensitive
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if ('parameter' == $name && $lowercase) {
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$key = strtolower($key);
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}
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}
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$onInvalid = $arg->getAttribute('on-invalid');
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$invalidBehavior = ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
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if ('ignore' == $onInvalid) {
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$invalidBehavior = ContainerInterface::IGNORE_ON_INVALID_REFERENCE;
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} elseif ('null' == $onInvalid) {
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$invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE;
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}
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switch ($arg->getAttribute('type')) {
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case 'service':
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$arguments[$key] = new Reference($arg->getAttribute('id'), $invalidBehavior);
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break;
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case 'expression':
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$arguments[$key] = new Expression($arg->nodeValue);
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break;
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case 'closure-proxy':
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$arguments[$key] = new ClosureProxyArgument($arg->getAttribute('id'), $arg->getAttribute('method'), $invalidBehavior);
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break;
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case 'collection':
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$arguments[$key] = $this->getArgumentsAsPhp($arg, $name, false);
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break;
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case 'iterator':
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$arguments[$key] = new IteratorArgument($this->getArgumentsAsPhp($arg, $name, false));
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break;
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case 'string':
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$arguments[$key] = $arg->nodeValue;
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break;
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case 'constant':
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$arguments[$key] = constant(trim($arg->nodeValue));
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break;
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default:
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$arguments[$key] = XmlUtils::phpize($arg->nodeValue);
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}
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}
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return $arguments;
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}
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/**
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* Get child elements by name.
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*
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* @param \DOMNode $node
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* @param mixed $name
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*
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* @return array
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*/
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private function getChildren(\DOMNode $node, $name)
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{
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$children = array();
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foreach ($node->childNodes as $child) {
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if ($child instanceof \DOMElement && $child->localName === $name && $child->namespaceURI === self::NS) {
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$children[] = $child;
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}
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}
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return $children;
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}
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/**
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* Validates a documents XML schema.
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*
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* @param \DOMDocument $dom
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*
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* @return bool
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*
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* @throws RuntimeException When extension references a non-existent XSD file
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*/
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public function validateSchema(\DOMDocument $dom)
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{
|
|
$schemaLocations = array('http://symfony.com/schema/dic/services' => str_replace('\\', '/', __DIR__.'/schema/dic/services/services-1.0.xsd'));
|
|
|
|
if ($element = $dom->documentElement->getAttributeNS('http://www.w3.org/2001/XMLSchema-instance', 'schemaLocation')) {
|
|
$items = preg_split('/\s+/', $element);
|
|
for ($i = 0, $nb = count($items); $i < $nb; $i += 2) {
|
|
if (!$this->container->hasExtension($items[$i])) {
|
|
continue;
|
|
}
|
|
|
|
if (($extension = $this->container->getExtension($items[$i])) && false !== $extension->getXsdValidationBasePath()) {
|
|
$path = str_replace($extension->getNamespace(), str_replace('\\', '/', $extension->getXsdValidationBasePath()).'/', $items[$i + 1]);
|
|
|
|
if (!is_file($path)) {
|
|
throw new RuntimeException(sprintf('Extension "%s" references a non-existent XSD file "%s"', get_class($extension), $path));
|
|
}
|
|
|
|
$schemaLocations[$items[$i]] = $path;
|
|
}
|
|
}
|
|
}
|
|
|
|
$tmpfiles = array();
|
|
$imports = '';
|
|
foreach ($schemaLocations as $namespace => $location) {
|
|
$parts = explode('/', $location);
|
|
if (0 === stripos($location, 'phar://')) {
|
|
$tmpfile = tempnam(sys_get_temp_dir(), 'sf2');
|
|
if ($tmpfile) {
|
|
copy($location, $tmpfile);
|
|
$tmpfiles[] = $tmpfile;
|
|
$parts = explode('/', str_replace('\\', '/', $tmpfile));
|
|
}
|
|
}
|
|
$drive = '\\' === DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
|
|
$location = 'file:///'.$drive.implode('/', array_map('rawurlencode', $parts));
|
|
|
|
$imports .= sprintf(' <xsd:import namespace="%s" schemaLocation="%s" />'."\n", $namespace, $location);
|
|
}
|
|
|
|
$source = <<<EOF
|
|
<?xml version="1.0" encoding="utf-8" ?>
|
|
<xsd:schema xmlns="http://symfony.com/schema"
|
|
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
|
|
targetNamespace="http://symfony.com/schema"
|
|
elementFormDefault="qualified">
|
|
|
|
<xsd:import namespace="http://www.w3.org/XML/1998/namespace"/>
|
|
$imports
|
|
</xsd:schema>
|
|
EOF
|
|
;
|
|
|
|
$disableEntities = libxml_disable_entity_loader(false);
|
|
$valid = @$dom->schemaValidateSource($source);
|
|
libxml_disable_entity_loader($disableEntities);
|
|
|
|
foreach ($tmpfiles as $tmpfile) {
|
|
@unlink($tmpfile);
|
|
}
|
|
|
|
return $valid;
|
|
}
|
|
|
|
/**
|
|
* Validates an alias.
|
|
*
|
|
* @param \DOMElement $alias
|
|
* @param string $file
|
|
*/
|
|
private function validateAlias(\DOMElement $alias, $file)
|
|
{
|
|
foreach ($alias->attributes as $name => $node) {
|
|
if (!in_array($name, array('alias', 'id', 'public'))) {
|
|
@trigger_error(sprintf('Using the attribute "%s" is deprecated for the service "%s" which is defined as an alias in "%s". Allowed attributes for service aliases are "alias", "id" and "public". The XmlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported attributes.', $name, $alias->getAttribute('id'), $file), E_USER_DEPRECATED);
|
|
}
|
|
}
|
|
|
|
foreach ($alias->childNodes as $child) {
|
|
if ($child instanceof \DOMElement && $child->namespaceURI === self::NS) {
|
|
@trigger_error(sprintf('Using the element "%s" is deprecated for the service "%s" which is defined as an alias in "%s". The XmlFileLoader will raise an exception in Symfony 4.0, instead of silently ignoring unsupported elements.', $child->localName, $alias->getAttribute('id'), $file), E_USER_DEPRECATED);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Validates an extension.
|
|
*
|
|
* @param \DOMDocument $dom
|
|
* @param string $file
|
|
*
|
|
* @throws InvalidArgumentException When no extension is found corresponding to a tag
|
|
*/
|
|
private function validateExtensions(\DOMDocument $dom, $file)
|
|
{
|
|
foreach ($dom->documentElement->childNodes as $node) {
|
|
if (!$node instanceof \DOMElement || 'http://symfony.com/schema/dic/services' === $node->namespaceURI) {
|
|
continue;
|
|
}
|
|
|
|
// can it be handled by an extension?
|
|
if (!$this->container->hasExtension($node->namespaceURI)) {
|
|
$extensionNamespaces = array_filter(array_map(function ($ext) { return $ext->getNamespace(); }, $this->container->getExtensions()));
|
|
throw new InvalidArgumentException(sprintf(
|
|
'There is no extension able to load the configuration for "%s" (in %s). Looked for namespace "%s", found %s',
|
|
$node->tagName,
|
|
$file,
|
|
$node->namespaceURI,
|
|
$extensionNamespaces ? sprintf('"%s"', implode('", "', $extensionNamespaces)) : 'none'
|
|
));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Loads from an extension.
|
|
*
|
|
* @param \DOMDocument $xml
|
|
*/
|
|
private function loadFromExtensions(\DOMDocument $xml)
|
|
{
|
|
foreach ($xml->documentElement->childNodes as $node) {
|
|
if (!$node instanceof \DOMElement || $node->namespaceURI === self::NS) {
|
|
continue;
|
|
}
|
|
|
|
$values = static::convertDomElementToArray($node);
|
|
if (!is_array($values)) {
|
|
$values = array();
|
|
}
|
|
|
|
$this->container->loadFromExtension($node->namespaceURI, $values);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Converts a \DomElement object to a PHP array.
|
|
*
|
|
* The following rules applies during the conversion:
|
|
*
|
|
* * Each tag is converted to a key value or an array
|
|
* if there is more than one "value"
|
|
*
|
|
* * The content of a tag is set under a "value" key (<foo>bar</foo>)
|
|
* if the tag also has some nested tags
|
|
*
|
|
* * The attributes are converted to keys (<foo foo="bar"/>)
|
|
*
|
|
* * The nested-tags are converted to keys (<foo><foo>bar</foo></foo>)
|
|
*
|
|
* @param \DomElement $element A \DomElement instance
|
|
*
|
|
* @return array A PHP array
|
|
*/
|
|
public static function convertDomElementToArray(\DOMElement $element)
|
|
{
|
|
return XmlUtils::convertDomElementToArray($element);
|
|
}
|
|
}
|