defender-security / lib / packages / DI / Definition / Resolver / EnvironmentVariableResolver.php

EnvironmentVariableResolver.php in Defender Security – Malware Scanner, Login Security & Firewall 5.7.0, at lib/packages/DI/Definition/Resolver/EnvironmentVariableResolver.php

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1	<?php
2
3	declare(strict_types=1);
4
5	namespace WPMU_DEV\Defender\Vendor\DI\Definition\Resolver;
6
7	use WPMU_DEV\Defender\Vendor\DI\Definition\Definition;
8	use WPMU_DEV\Defender\Vendor\DI\Definition\EnvironmentVariableDefinition;
9	use WPMU_DEV\Defender\Vendor\DI\Definition\Exception\InvalidDefinition;
10
11	/**
12	* Resolves a environment variable definition to a value.
13	*
14	* @template-implements DefinitionResolver<EnvironmentVariableDefinition>
15	*
16	* @author James Harris <[email protected]>
17	*/
18	class EnvironmentVariableResolver implements DefinitionResolver
19	{
20	/** @var callable */
21	private $variableReader;
22
23	public function __construct(
24	private DefinitionResolver $definitionResolver,
25	$variableReader = null,
26	) {
27	$this->variableReader = $variableReader ?? [$this, 'getEnvVariable'];
28	}
29
30	/**
31	* Resolve an environment variable definition to a value.
32	*
33	* @param EnvironmentVariableDefinition $definition
34	*/
35	public function resolve(Definition $definition, array $parameters = []) : mixed
36	{
37	$value = call_user_func($this->variableReader, $definition->getVariableName());
38
39	if (false !== $value) {
40	return $value;
41	}
42
43	if (!$definition->isOptional()) {
44	throw new InvalidDefinition(sprintf(
45	"The environment variable '%s' has not been defined",
46	$definition->getVariableName()
47	));
48	}
49
50	$value = $definition->getDefaultValue();
51
52	// Nested definition
53	if ($value instanceof Definition) {
54	return $this->definitionResolver->resolve($value);
55	}
56
57	return $value;
58	}
59
60	public function isResolvable(Definition $definition, array $parameters = []) : bool
61	{
62	return true;
63	}
64
65	protected function getEnvVariable(string $variableName)
66	{
67	return $_ENV[$variableName] ?? $_SERVER[$variableName] ?? getenv($variableName);
68	}
69	}
70