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<?php |
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/** |
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* This file is part of the sj-i/php-profiler 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 PhpProfiler\Lib\PhpProcessReader; |
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use PhpProfiler\Inspector\Settings\TargetPhpSettings\TargetPhpSettings; |
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use PhpProfiler\Inspector\Settings\TargetProcessSettings\TargetProcessSettings; |
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use PhpProfiler\Lib\ByteStream\IntegerByteSequence\IntegerByteSequenceReader; |
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use PhpProfiler\Lib\ByteStream\CDataByteReader; |
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use PhpProfiler\Lib\Elf\Parser\ElfParserException; |
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use PhpProfiler\Lib\Elf\Process\ProcessSymbolReaderException; |
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use PhpProfiler\Lib\Elf\Process\ProcessSymbolReaderInterface; |
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use PhpProfiler\Lib\Elf\Tls\TlsFinderException; |
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use PhpProfiler\Lib\PhpInternals\ZendTypeReader; |
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use PhpProfiler\Lib\Process\MemoryReader\MemoryReaderException; |
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use PhpProfiler\Lib\Process\MemoryReader\MemoryReaderInterface; |
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use PhpProfiler\Lib\Process\ProcessSpecifier; |
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use RuntimeException; |
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final class PhpGlobalsFinder |
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{ |
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public function __construct( |
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private PhpSymbolReaderCreator $php_symbol_reader_creator, |
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private IntegerByteSequenceReader $integer_reader, |
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private MemoryReaderInterface $memory_reader |
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) { |
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} |
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/** |
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* @throws MemoryReaderException |
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* @throws ProcessSymbolReaderException |
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* @throws TlsFinderException |
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*/ |
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public function findTsrmLsCache( |
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ProcessSpecifier $process_specifier, |
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TargetPhpSettings $target_php_settings |
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): ?int { |
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$tsrm_lm_cache_cdata = $this->getSymbolReader( |
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$process_specifier, |
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$target_php_settings |
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)->read('_tsrm_ls_cache'); |
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if (isset($tsrm_lm_cache_cdata)) { |
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return $this->integer_reader->read64( |
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new CDataByteReader($tsrm_lm_cache_cdata), |
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0 |
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)->toInt(); |
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} |
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return null; |
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} |
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/** |
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* @throws MemoryReaderException |
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* @throws ProcessSymbolReaderException |
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* @throws TlsFinderException |
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*/ |
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public function getSymbolReader( |
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ProcessSpecifier $process_specifier, |
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TargetPhpSettings $target_php_settings |
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): ProcessSymbolReaderInterface { |
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return $this->php_symbol_reader_creator->create( |
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$process_specifier->pid, |
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$target_php_settings->php_regex, |
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$target_php_settings->libpthread_regex, |
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$target_php_settings->php_path, |
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$target_php_settings->libpthread_path |
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); |
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} |
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/** |
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* @throws ElfParserException |
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* @throws MemoryReaderException |
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* @throws ProcessSymbolReaderException |
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* @throws TlsFinderException |
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*/ |
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public function findExecutorGlobals( |
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ProcessSpecifier $process_specifier, |
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TargetPhpSettings $target_php_settings |
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): int { |
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$tsrm_ls_cache = $this->findTsrmLsCache($process_specifier, $target_php_settings); |
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if (isset($tsrm_ls_cache)) { |
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switch ($target_php_settings->php_version) { |
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case ZendTypeReader::V70: |
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case ZendTypeReader::V71: |
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case ZendTypeReader::V72: |
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case ZendTypeReader::V73: |
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$executor_globals_id_cdata = $this->getSymbolReader($process_specifier, $target_php_settings) |
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->read('executor_globals_id'); |
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if (is_null($executor_globals_id_cdata)) { |
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throw new RuntimeException('executor_globals_id not found'); |
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} |
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$tsrm_ls_cache_dereferenced = $this->integer_reader->read64( |
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new CDataByteReader( |
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$this->memory_reader->read( |
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$process_specifier->pid, |
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$tsrm_ls_cache, |
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8 |
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) |
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), |
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0 |
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)->toInt(); |
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$executor_globals_id = $this->integer_reader->read32( |
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new CDataByteReader($executor_globals_id_cdata), |
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0 |
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); |
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return $this->integer_reader->read64( |
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new CDataByteReader( |
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$this->memory_reader->read( |
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$process_specifier->pid, |
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$tsrm_ls_cache_dereferenced + ($executor_globals_id - 1) * 8, |
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8 |
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) |
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), |
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0 |
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)->toInt(); |
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case ZendTypeReader::V74: |
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case ZendTypeReader::V80: |
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case ZendTypeReader::V81: |
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$executor_globals_offset_cdata = $this->getSymbolReader( |
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$process_specifier, |
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$target_php_settings |
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)->read('executor_globals_offset'); |
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if (is_null($executor_globals_offset_cdata)) { |
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throw new RuntimeException('executor_globals_offset not found'); |
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} |
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$executor_globals_offset = $this->integer_reader->read64( |
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new CDataByteReader($executor_globals_offset_cdata), |
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0 |
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)->toInt(); |
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return $tsrm_ls_cache + $executor_globals_offset; |
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default: |
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throw new \LogicException('this should never happen'); |
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} |
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} |
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$executor_globals_address = $this->getSymbolReader($process_specifier, $target_php_settings) |
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->resolveAddress('executor_globals'); |
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if (is_null($executor_globals_address)) { |
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throw new RuntimeException('executor globals not found'); |
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} |
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return $executor_globals_address; |
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} |
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public function findModuleRegistry( |
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ProcessSpecifier $process_specifier, |
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TargetPhpSettings $target_php_settings |
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): ?int { |
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$symbol_reader = $this->getSymbolReader( |
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$process_specifier, |
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$target_php_settings |
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); |
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$module_registry = $symbol_reader->resolveAddress('module_registry'); |
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return $module_registry; |
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} |
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} |
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sj-i /
php-profiler
