88 lines
2.2 KiB
PHP
88 lines
2.2 KiB
PHP
<?php
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namespace SilverStripe\Core\Startup;
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use SilverStripe\Control\HTTPRequest;
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use SilverStripe\Core\Kernel;
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use SilverStripe\Core\Environment;
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/**
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* The default flush discovery implementation
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*
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* - if request has `flush` or URL is `dev/build`
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* - AND in CLI or DEV mode
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* - then flush
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*/
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class RequestFlushDiscoverer implements FlushDiscoverer
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{
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/**
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* Environment type (dev, test or live)
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*
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* @var string
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*/
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protected $env;
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/**
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* Active request instance (session is not initialized yet!)
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*
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* @var HTTPRequest
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*/
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protected $request;
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/**
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* Initialize it with active Request and Kernel
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*
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* @param HTTPRequest $request instance of the request (session is not initialized yet!)
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* @param string $env Environment type (dev, test or live)
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*/
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public function __construct(HTTPRequest $request, $env)
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{
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$this->env = $env;
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$this->request = $request;
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}
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/**
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* Checks whether the request contains any flush indicators
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*
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*
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* @return null|bool flush or don't care
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*/
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protected function lookupRequest()
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{
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$request = $this->request;
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$getVar = array_key_exists('flush', $request->getVars() ?? []);
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$devBuild = $request->getURL() === 'dev/build';
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// WARNING!
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// We specifically return `null` and not `false` here so that
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// it does not override other FlushDiscoverers
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return ($getVar || $devBuild) ? true : null;
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}
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/**
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* Checks for permission to flush
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*
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* Startup flush through a request is only allowed
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* to CLI or DEV modes for security reasons
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*
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* @return bool|null true for allow, false for denying, or null if don't care
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*/
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protected function isAllowed()
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{
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// WARNING!
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// We specifically return `null` and not `false` here so that
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// it does not override other FlushDiscoverers
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return (Environment::isCli() || $this->env === Kernel::DEV) ? true : null;
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}
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public function shouldFlush()
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{
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if (!$allowed = $this->isAllowed()) {
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return $allowed;
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}
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return $this->lookupRequest();
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}
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}
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