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<?php declare(strict_types=1);
/*
* This file is part of PHPUnit.
*
* (c) Sebastian Bergmann <sebastian@phpunit.de>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PHPUnit\Util\PHP;
use function array_merge;
use function fclose;
use function file_put_contents;
use function fread;
use function fwrite;
use function is_array;
use function is_resource;
use function proc_close;
use function proc_open;
use function proc_terminate;
use function rewind;
use function sprintf;
use function stream_get_contents;
use function stream_select;
use function sys_get_temp_dir;
use function tempnam;
use function unlink;
use PHPUnit\Framework\Exception;
/**
* @internal This class is not covered by the backward compatibility promise for PHPUnit
*/
class DefaultPhpProcess extends AbstractPhpProcess
{
/**
* @var string
*/
protected $tempFile;
/**
* Runs a single job (PHP code) using a separate PHP process.
*
* @throws Exception
*/
public function runJob(string $job, array $settings = []): array
{
if ($this->stdin || $this->useTemporaryFile()) {
if (!($this->tempFile = tempnam(sys_get_temp_dir(), 'PHPUnit')) ||
file_put_contents($this->tempFile, $job) === false) {
throw new Exception(
'Unable to write temporary file',
);
}
$job = $this->stdin;
}
return $this->runProcess($job, $settings);
}
/**
* Returns an array of file handles to be used in place of pipes.
*/
protected function getHandles(): array
{
return [];
}
/**
* Handles creating the child process and returning the STDOUT and STDERR.
*
* @throws Exception
*/
protected function runProcess(string $job, array $settings): array
{
$handles = $this->getHandles();
$env = null;
if ($this->env) {
$env = $_SERVER ?? [];
unset($env['argv'], $env['argc']);
$env = array_merge($env, $this->env);
foreach ($env as $envKey => $envVar) {
if (is_array($envVar)) {
unset($env[$envKey]);
}
}
}
$pipeSpec = [
0 => $handles[0] ?? ['pipe', 'r'],
1 => $handles[1] ?? ['pipe', 'w'],
2 => $handles[2] ?? ['pipe', 'w'],
];
$process = proc_open(
$this->getCommand($settings, $this->tempFile),
$pipeSpec,
$pipes,
null,
$env,
);
if (!is_resource($process)) {
throw new Exception(
'Unable to spawn worker process',
);
}
if ($job) {
$this->process($pipes[0], $job);
}
fclose($pipes[0]);
$stderr = $stdout = '';
if ($this->timeout) {
unset($pipes[0]);
while (true) {
$r = $pipes;
$w = null;
$e = null;
$n = @stream_select($r, $w, $e, $this->timeout);
if ($n === false) {
break;
}
if ($n === 0) {
proc_terminate($process, 9);
throw new Exception(
sprintf(
'Job execution aborted after %d seconds',
$this->timeout,
),
);
}
if ($n > 0) {
foreach ($r as $pipe) {
$pipeOffset = 0;
foreach ($pipes as $i => $origPipe) {
if ($pipe === $origPipe) {
$pipeOffset = $i;
break;
}
}
if (!$pipeOffset) {
break;
}
$line = fread($pipe, 8192);
if ($line === '' || $line === false) {
fclose($pipes[$pipeOffset]);
unset($pipes[$pipeOffset]);
} elseif ($pipeOffset === 1) {
$stdout .= $line;
} else {
$stderr .= $line;
}
}
if (empty($pipes)) {
break;
}
}
}
} else {
if (isset($pipes[1])) {
$stdout = stream_get_contents($pipes[1]);
fclose($pipes[1]);
}
if (isset($pipes[2])) {
$stderr = stream_get_contents($pipes[2]);
fclose($pipes[2]);
}
}
if (isset($handles[1])) {
rewind($handles[1]);
$stdout = stream_get_contents($handles[1]);
fclose($handles[1]);
}
if (isset($handles[2])) {
rewind($handles[2]);
$stderr = stream_get_contents($handles[2]);
fclose($handles[2]);
}
proc_close($process);
$this->cleanup();
return ['stdout' => $stdout, 'stderr' => $stderr];
}
/**
* @param resource $pipe
*/
protected function process($pipe, string $job): void
{
fwrite($pipe, $job);
}
protected function cleanup(): void
{
if ($this->tempFile) {
unlink($this->tempFile);
}
}
protected function useTemporaryFile(): bool
{
return false;
}
}
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