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<?php |
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/** |
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* This file is part of the reliforp/reli-prof package. |
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* |
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* (c) sji <[email protected]> |
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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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declare(strict_types=1); |
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namespace Reli\Lib\PhpProcessReader; |
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use Reli\Inspector\Settings\TargetPhpSettings\TargetPhpSettings; |
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use Reli\Lib\PhpInternals\Types\Zend\ZendArray; |
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use Reli\Lib\PhpInternals\Types\Zend\ZendCastedTypeProvider; |
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use Reli\Lib\PhpInternals\Types\Zend\ZendModuleEntry; |
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use Reli\Lib\PhpInternals\ZendTypeReader; |
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use Reli\Lib\PhpInternals\ZendTypeReaderCreator; |
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use Reli\Lib\Process\MemoryReader\MemoryReaderInterface; |
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use Reli\Lib\Process\Pointer\Dereferencer; |
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use Reli\Lib\Process\Pointer\Pointer; |
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use Reli\Lib\Process\Pointer\RemoteProcessDereferencer; |
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use Reli\Lib\Process\ProcessSpecifier; |
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use Webmozart\Assert\Assert; |
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class PhpVersionDetector |
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{ |
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private ?ZendTypeReader $zend_type_reader = null; |
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public function __construct( |
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private PhpGlobalsFinder $php_globals_finder, |
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private MemoryReaderInterface $memory_reader, |
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private ZendTypeReaderCreator $zend_type_reader_creator, |
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) { |
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} |
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/** |
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* @param value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> $php_version |
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*/ |
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private function getTypeReader(string $php_version): ZendTypeReader |
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{ |
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if (is_null($this->zend_type_reader)) { |
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$this->zend_type_reader = $this->zend_type_reader_creator->create($php_version); |
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} |
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return $this->zend_type_reader; |
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} |
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/** |
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* @param value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> $php_version |
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*/ |
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private function getDereferencer(int $pid, string $php_version): Dereferencer |
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{ |
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return new RemoteProcessDereferencer( |
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$this->memory_reader, |
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new ProcessSpecifier($pid), |
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new ZendCastedTypeProvider( |
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$this->getTypeReader($php_version), |
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) |
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); |
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} |
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/** @return TargetPhpSettings<value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS>> */ |
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public function decidePhpVersion( |
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ProcessSpecifier $process_specifier, |
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TargetPhpSettings $target_php_settings, |
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): TargetPhpSettings { |
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if ($target_php_settings->php_version !== 'auto') { |
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/** @var TargetPhpSettings<value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS>> */ |
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return $target_php_settings; |
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} |
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$module_registry_address = $this->php_globals_finder->findModuleRegistry( |
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$process_specifier, |
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$target_php_settings, |
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); |
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$version = null; |
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if (!is_null($module_registry_address)) { |
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$version = $this->detectPhpVersion($process_specifier->pid, $module_registry_address); |
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} |
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if (is_null($version)) { |
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/** @var value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> $version */ |
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$version = 'v' . PHP_MAJOR_VERSION . PHP_MINOR_VERSION; |
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Assert::true(ZendTypeReader::isSupported($version)); |
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} |
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return new TargetPhpSettings( |
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php_regex: $target_php_settings->php_regex, |
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libpthread_regex: $target_php_settings->libpthread_regex, |
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php_version: $version, |
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php_path: $target_php_settings->php_path, |
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libpthread_path: $target_php_settings->libpthread_path, |
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); |
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} |
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/** @return value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS>|null */ |
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public function detectPhpVersion( |
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int $pid, |
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int $module_registry_address |
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): ?string { |
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$fake_php_version = ZendTypeReader::defaultVersion(); |
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$dereferencer = $this->getDereferencer($pid, $fake_php_version); |
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$module_registry = $this->getModuleRegistry( |
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$module_registry_address, |
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$fake_php_version, |
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$dereferencer |
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); |
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$module_registry_entry_bucket = $module_registry->findByKey($dereferencer, 'standard'); |
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if (is_null($module_registry_entry_bucket)) { |
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return null; |
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} |
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$module_registry_entry_pointer = $module_registry_entry_bucket->val; |
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$module_entry_pointer = new Pointer( |
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ZendModuleEntry::class, |
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$module_registry_entry_pointer->value->lval, |
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$this->getTypeReader($fake_php_version)->sizeOf('zend_module_entry') |
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); |
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/** |
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* @var ZendModuleEntry $basic_module_entry |
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* @psalm-ignore-var |
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*/ |
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$basic_module_entry = $dereferencer->deref($module_entry_pointer); |
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$version = $basic_module_entry->getVersion($dereferencer); |
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$result_string = 'v' . str_replace('.', '', $version); |
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if (ZendTypeReader::isSupported($result_string)) { |
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/** @var value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> */ |
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return $result_string; |
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} |
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return null; |
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} |
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/** |
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* @param value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> $fake_version |
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*/ |
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private function getModuleRegistry( |
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int $module_registry_address, |
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string $fake_php_version, |
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Dereferencer $dereferencer |
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): ZendArray { |
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/** @var value-of<ZendTypeReader::ALL_SUPPORTED_VERSIONS> $fake_php_version */ |
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$pointer = new Pointer( |
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ZendArray::class, |
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$module_registry_address, |
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$this->getTypeReader($fake_php_version)->sizeOf('zend_array') |
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); |
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return $dereferencer->deref($pointer); |
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} |
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} |
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reliforp /
reli-prof
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