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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\Process\ProcessStopper; |
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use FFI\CInteger; |
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final class ProcessStopper |
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{ |
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private \FFI $ffi; |
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private const PTRACE_ATTACH = 16; |
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private const PTRACE_DETACH = 17; |
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public function __construct() |
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{ |
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$this->ffi = \FFI::cdef(' |
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struct user_regs_struct { |
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unsigned long r15; |
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unsigned long r14; |
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unsigned long r13; |
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unsigned long r12; |
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unsigned long bp; |
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unsigned long bx; |
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unsigned long r11; |
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unsigned long r10; |
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unsigned long r9; |
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unsigned long r8; |
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unsigned long ax; |
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unsigned long cx; |
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unsigned long dx; |
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unsigned long si; |
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unsigned long di; |
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unsigned long orig_ax; |
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unsigned long ip; |
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unsigned long cs; |
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unsigned long flags; |
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unsigned long sp; |
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unsigned long ss; |
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unsigned long fs_base; |
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unsigned long gs_base; |
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unsigned long ds; |
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unsigned long es; |
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unsigned long fs; |
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unsigned long gs; |
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}; |
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typedef int pid_t; |
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enum __ptrace_request |
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{ |
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PTRACE_TRACEME = 0, |
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PTRACE_PEEKTEXT = 1, |
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PTRACE_PEEKDATA = 2, |
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PTRACE_PEEKUSER = 3, |
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PTRACE_POKETEXT = 4, |
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PTRACE_POKEDATA = 5, |
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PTRACE_POKEUSER = 6, |
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PTRACE_CONT = 7, |
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PTRACE_KILL = 8, |
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PTRACE_SINGLESTEP = 9, |
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PTRACE_GETREGS = 12, |
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PTRACE_SETREGS = 13, |
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PTRACE_GETFPREGS = 14, |
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PTRACE_SETFPREGS = 15, |
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PTRACE_ATTACH = 16, |
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PTRACE_DETACH = 17, |
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PTRACE_GETFPXREGS = 18, |
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PTRACE_SETFPXREGS = 19, |
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PTRACE_SYSCALL = 24, |
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PTRACE_SETOPTIONS = 0x4200, |
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PTRACE_GETEVENTMSG = 0x4201, |
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PTRACE_GETSIGINFO = 0x4202, |
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PTRACE_SETSIGINFO = 0x4203 |
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}; |
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long ptrace(enum __ptrace_request request, pid_t pid, void *addr, void *data); |
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int errno; |
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', 'libc.so.6'); |
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} |
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public function stop(int $pid): bool |
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{ |
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/** @var CInteger $zero */ |
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$zero = $this->ffi->new('long'); |
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$zero->cdata = 0; |
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$null = \FFI::cast('void *', $zero); |
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/** @var \FFI\Libc\ptrace_ffi $this->ffi */ |
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$attach = $this->ffi->ptrace(self::PTRACE_ATTACH, $pid, $null, $null); |
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if ($attach === -1) { |
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/** @var int $errno */ |
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$errno = $this->ffi->errno; |
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if ($errno) { |
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return false; |
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} |
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} |
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pcntl_waitpid($pid, $status, WUNTRACED); |
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return true; |
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} |
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public function resume(int $pid): void |
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{ |
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/** @var CInteger $zero */ |
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$zero = $this->ffi->new('long'); |
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$zero->cdata = 0; |
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$null = \FFI::cast('void *', $zero); |
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/** @var \FFI\Libc\ptrace_ffi $this->ffi */ |
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$detach = $this->ffi->ptrace(self::PTRACE_DETACH, $pid, $null, $null); |
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if ($detach === -1) { |
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/** @var int $errno */ |
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$errno = $this->ffi->errno; |
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if ($errno) { |
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return; |
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} |
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} |
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} |
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} |
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sj-i /
php-profiler
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