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Merge pull request #426 from reliforp/support-franken
Improve support of non-executable ZTS binaries (support frankenphp)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| <?php | ||
|
|
||
| /** | ||
| * This file is part of the reliforp/reli-prof package. | ||
| * | ||
| * (c) sji <[email protected]> | ||
| * | ||
| * For the full copyright and license information, please view the LICENSE | ||
| * file that was distributed with this source code. | ||
| */ | ||
|
|
||
| declare(strict_types=1); | ||
|
|
||
| namespace Reli\Lib\Elf\Process; | ||
|
|
||
| final class LinkMap | ||
| { | ||
| public function __construct( | ||
| public int $this_address, | ||
| public int $l_addr, | ||
| public string $l_name, | ||
| public int $l_ld, | ||
| public int $l_next_address, | ||
| public int $l_prev_address, | ||
| ) { | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,86 @@ | ||
| <?php | ||
|
|
||
| /** | ||
| * This file is part of the reliforp/reli-prof package. | ||
| * | ||
| * (c) sji <[email protected]> | ||
| * | ||
| * For the full copyright and license information, please view the LICENSE | ||
| * file that was distributed with this source code. | ||
| */ | ||
|
|
||
| declare(strict_types=1); | ||
|
|
||
| namespace Reli\Lib\Elf\Process; | ||
|
|
||
| use Reli\Lib\ByteStream\CDataByteReader; | ||
| use Reli\Lib\ByteStream\IntegerByteSequence\IntegerByteSequenceReader; | ||
| use Reli\Lib\Process\MemoryReader\MemoryReaderInterface; | ||
|
|
||
| class LinkMapLoader | ||
| { | ||
| public function __construct( | ||
| private MemoryReaderInterface $memory_reader, | ||
| private IntegerByteSequenceReader $integer_reader, | ||
| ) { | ||
| } | ||
|
|
||
| public function loadFromAddress(int $pid, int $address): LinkMap | ||
| { | ||
| $bytes = new CDataByteReader($this->memory_reader->read($pid, $address, $this->getSize())); | ||
| $l_addr = $this->integer_reader->read64($bytes, 0); | ||
| $l_name_address = $this->integer_reader->read64($bytes, 8); | ||
| $l_ld = $this->integer_reader->read64($bytes, 16); | ||
| $l_next_address = $this->integer_reader->read64($bytes, 24); | ||
| $l_prev_address = $this->integer_reader->read64($bytes, 32); | ||
|
|
||
| return new LinkMap( | ||
| $address, | ||
| $l_addr->toInt(), | ||
| $this->readCString($pid, $l_name_address->toInt()), | ||
| $l_ld->toInt(), | ||
| $l_next_address->toInt(), | ||
| $l_prev_address->toInt() | ||
| ); | ||
| } | ||
|
|
||
| public function searchByName(string $name, int $pid, int $root_address): ?LinkMap | ||
| { | ||
| $address = $root_address; | ||
| do { | ||
| $link_map = $this->loadFromAddress($pid, $address); | ||
| if ($link_map->l_name === $name) { | ||
| return $link_map; | ||
| } | ||
| $address = $link_map->l_next_address; | ||
| } while ($address !== 0); | ||
| return null; | ||
| } | ||
|
|
||
| private function getSize(): int | ||
| { | ||
| return 8 // l_addr | ||
| + 8 // l_name | ||
| + 8 // l_ld | ||
| + 8 // l_next | ||
| + 8 // l_prev | ||
| ; | ||
| } | ||
|
|
||
| private function readCString(int $pid, int $address): string | ||
| { | ||
| $bytes = $this->memory_reader->read($pid, $address, 1); | ||
| $str = ''; | ||
| while (true) { | ||
| /** @var int $c */ | ||
| $c = $bytes[0]; | ||
| if ($c === 0) { | ||
| break; | ||
| } | ||
| $str .= chr($c); | ||
| $address += 1; | ||
| $bytes = $this->memory_reader->read($pid, $address, 1); | ||
| } | ||
| return $str; | ||
| } | ||
| } |
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