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<?php namespace Symfony\Component\Process; if (!defined('ABSPATH')) exit; use Symfony\Component\Process\Exception\InvalidArgumentException; use Symfony\Component\Process\Exception\LogicException; use Symfony\Component\Process\Exception\ProcessFailedException; use Symfony\Component\Process\Exception\ProcessSignaledException; use Symfony\Component\Process\Exception\ProcessTimedOutException; use Symfony\Component\Process\Exception\RuntimeException; use Symfony\Component\Process\Pipes\PipesInterface; use Symfony\Component\Process\Pipes\UnixPipes; use Symfony\Component\Process\Pipes\WindowsPipes; class Process implements \IteratorAggregate { public const ERR = 'err'; public const OUT = 'out'; public const STATUS_READY = 'ready'; public const STATUS_STARTED = 'started'; public const STATUS_TERMINATED = 'terminated'; public const STDIN = 0; public const STDOUT = 1; public const STDERR = 2; // Timeout Precision in seconds. public const TIMEOUT_PRECISION = 0.2; public const ITER_NON_BLOCKING = 1; // By default, iterating over outputs is a blocking call, use this flag to make it non-blocking public const ITER_KEEP_OUTPUT = 2; // By default, outputs are cleared while iterating, use this flag to keep them in memory public const ITER_SKIP_OUT = 4; // Use this flag to skip STDOUT while iterating public const ITER_SKIP_ERR = 8; // Use this flag to skip STDERR while iterating private $callback; private $hasCallback = false; private $commandline; private $cwd; private $env = []; private $input; private $starttime; private $lastOutputTime; private $timeout; private $idleTimeout; private $exitcode; private $fallbackStatus = []; private $processInformation; private $outputDisabled = false; private $stdout; private $stderr; private $process; private $status = self::STATUS_READY; private $incrementalOutputOffset = 0; private $incrementalErrorOutputOffset = 0; private $tty = false; private $pty; private $useFileHandles = false; private $processPipes; private $latestSignal; private static $sigchild; public static $exitCodes = [ 0 => 'OK', 1 => 'General error', 2 => 'Misuse of shell builtins', 126 => 'Invoked command cannot execute', 127 => 'Command not found', 128 => 'Invalid exit argument', // signals 129 => 'Hangup', 130 => 'Interrupt', 131 => 'Quit and dump core', 132 => 'Illegal instruction', 133 => 'Trace/breakpoint trap', 134 => 'Process aborted', 135 => 'Bus error: "access to undefined portion of memory object"', 136 => 'Floating point exception: "erroneous arithmetic operation"', 137 => 'Kill (terminate immediately)', 138 => 'User-defined 1', 139 => 'Segmentation violation', 140 => 'User-defined 2', 141 => 'Write to pipe with no one reading', 142 => 'Signal raised by alarm', 143 => 'Termination (request to terminate)', // 144 - not defined 145 => 'Child process terminated, stopped (or continued)', 146 => 'Continue if stopped', 147 => 'Stop executing temporarily', 148 => 'Terminal stop signal', 149 => 'Background process attempting to read from tty ("in")', 150 => 'Background process attempting to write to tty ("out")', 151 => 'Urgent data available on socket', 152 => 'CPU time limit exceeded', 153 => 'File size limit exceeded', 154 => 'Signal raised by timer counting virtual time: "virtual timer expired"', 155 => 'Profiling timer expired', // 156 - not defined 157 => 'Pollable event', // 158 - not defined 159 => 'Bad syscall', ]; public function __construct($command, string $cwd = null, array $env = null, $input = null, ?float $timeout = 60) { if (!\function_exists('proc_open')) { throw new LogicException('The Process class relies on proc_open, which is not available on your PHP installation.'); } if (!\is_array($command)) { @trigger_error(sprintf('Passing a command as string when creating a "%s" instance is deprecated since Symfony 4.2, pass it as an array of its arguments instead, or use the "Process::fromShellCommandline()" constructor if you need features provided by the shell.', __CLASS__), \E_USER_DEPRECATED); } $this->commandline = $command; $this->cwd = $cwd; // on Windows, if the cwd changed via chdir(), proc_open defaults to the dir where PHP was started // on Gnu/Linux, PHP builds with --enable-maintainer-zts are also affected // @see : https://bugs.php.net/51800 // @see : https://bugs.php.net/50524 if (null === $this->cwd && (\defined('ZEND_THREAD_SAFE') \|\| '\\' === \DIRECTORY_SEPARATOR)) { $this->cwd = getcwd(); } if (null !== $env) { $this->setEnv($env); } $this->setInput($input); $this->setTimeout($timeout); $this->useFileHandles = '\\' === \DIRECTORY_SEPARATOR; $this->pty = false; } public static function fromShellCommandline(string $command, string $cwd = null, array $env = null, $input = null, ?float $timeout = 60) { $process = new static([], $cwd, $env, $input, $timeout); $process->commandline = $command; return $process; } public function __sleep() { throw new \BadMethodCallException('Cannot serialize '.__CLASS__); } public function __wakeup() { throw new \BadMethodCallException('Cannot unserialize '.__CLASS__); } public function __destruct() { $this->stop(0); } public function __clone() { $this->resetProcessData(); } public function run(callable $callback = null, array $env = []): int { $this->start($callback, $env); return $this->wait(); } public function mustRun(callable $callback = null, array $env = []): self { if (0 !== $this->run($callback, $env)) { throw new ProcessFailedException($this); } return $this; } public function start(callable $callback = null, array $env = []) { if ($this->isRunning()) { throw new RuntimeException('Process is already running.'); } $this->resetProcessData(); $this->starttime = $this->lastOutputTime = microtime(true); $this->callback = $this->buildCallback($callback); $this->hasCallback = null !== $callback; $descriptors = $this->getDescriptors(); if ($this->env) { $env += '\\' === \DIRECTORY_SEPARATOR ? array_diff_ukey($this->env, $env, 'strcasecmp') : $this->env; } $env += '\\' === \DIRECTORY_SEPARATOR ? array_diff_ukey($this->getDefaultEnv(), $env, 'strcasecmp') : $this->getDefaultEnv(); if (\is_array($commandline = $this->commandline)) { $commandline = implode(' ', array_map([$this, 'escapeArgument'], $commandline)); if ('\\' !== \DIRECTORY_SEPARATOR) { // exec is mandatory to deal with sending a signal to the process $commandline = 'exec '.$commandline; } } else { $commandline = $this->replacePlaceholders($commandline, $env); } $options = ['suppress_errors' => true]; if ('\\' === \DIRECTORY_SEPARATOR) { $options['bypass_shell'] = true; $commandline = $this->prepareWindowsCommandLine($commandline, $env); } elseif (!$this->useFileHandles && $this->isSigchildEnabled()) { // last exit code is output on the fourth pipe and caught to work around --enable-sigchild $descriptors[3] = ['pipe', 'w']; // See https://unix.stackexchange.com/questions/71205/background-process-pipe-input $commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;'; $commandline .= 'pid=$!; echo $pid >&3; wait $pid; code=$?; echo $code >&3; exit $code'; // Workaround for the bug, when PTS functionality is enabled. // @see : https://bugs.php.net/69442 $ptsWorkaround = fopen(__FILE__, 'r'); } $envPairs = []; foreach ($env as $k => $v) { if (false !== $v && false === \in_array($k, ['argc', 'argv', 'ARGC', 'ARGV'], true)) { $envPairs[] = $k.'='.$v; } } if (!is_dir($this->cwd)) { throw new RuntimeException(sprintf('The provided cwd "%s" does not exist.', $this->cwd)); } $this->process = @proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $envPairs, $options); if (!\is_resource($this->process)) { throw new RuntimeException('Unable to launch a new process.'); } $this->status = self::STATUS_STARTED; if (isset($descriptors[3])) { $this->fallbackStatus['pid'] = (int) fgets($this->processPipes->pipes[3]); } if ($this->tty) { return; } $this->updateStatus(false); $this->checkTimeout(); } public function restart(callable $callback = null, array $env = []): self { if ($this->isRunning()) { throw new RuntimeException('Process is already running.'); } $process = clone $this; $process->start($callback, $env); return $process; } public function wait(callable $callback = null) { $this->requireProcessIsStarted(__FUNCTION__); $this->updateStatus(false); if (null !== $callback) { if (!$this->processPipes->haveReadSupport()) { $this->stop(0); throw new LogicException('Pass the callback to the "Process::start" method or call enableOutput to use a callback with "Process::wait".'); } $this->callback = $this->buildCallback($callback); } do { $this->checkTimeout(); $running = '\\' === \DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen(); $this->readPipes($running, '\\' !== \DIRECTORY_SEPARATOR \|\| !$running); } while ($running); while ($this->isRunning()) { $this->checkTimeout(); usleep(1000); } if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) { throw new ProcessSignaledException($this); } return $this->exitcode; } public function waitUntil(callable $callback): bool { $this->requireProcessIsStarted(__FUNCTION__); $this->updateStatus(false); if (!$this->processPipes->haveReadSupport()) { $this->stop(0); throw new LogicException('Pass the callback to the "Process::start" method or call enableOutput to use a callback with "Process::waitUntil".'); } $callback = $this->buildCallback($callback); $ready = false; while (true) { $this->checkTimeout(); $running = '\\' === \DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen(); $output = $this->processPipes->readAndWrite($running, '\\' !== \DIRECTORY_SEPARATOR \|\| !$running); foreach ($output as $type => $data) { if (3 !== $type) { $ready = $callback(self::STDOUT === $type ? self::OUT : self::ERR, $data) \|\| $ready; } elseif (!isset($this->fallbackStatus['signaled'])) { $this->fallbackStatus['exitcode'] = (int) $data; } } if ($ready) { return true; } if (!$running) { return false; } usleep(1000); } } public function getPid() { return $this->isRunning() ? $this->processInformation['pid'] : null; } public function signal($signal) { $this->doSignal($signal, true); return $this; } public function disableOutput() { if ($this->isRunning()) { throw new RuntimeException('Disabling output while the process is running is not possible.'); } if (null !== $this->idleTimeout) { throw new LogicException('Output can not be disabled while an idle timeout is set.'); } $this->outputDisabled = true; return $this; } public function enableOutput() { if ($this->isRunning()) { throw new RuntimeException('Enabling output while the process is running is not possible.'); } $this->outputDisabled = false; return $this; } public function isOutputDisabled() { return $this->outputDisabled; } public function getOutput() { $this->readPipesForOutput(__FUNCTION__); if (false === $ret = stream_get_contents($this->stdout, -1, 0)) { return ''; } return $ret; } public function getIncrementalOutput() { $this->readPipesForOutput(__FUNCTION__); $latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); $this->incrementalOutputOffset = ftell($this->stdout); if (false === $latest) { return ''; } return $latest; } #[\ReturnTypeWillChange] public function getIterator($flags = 0) { $this->readPipesForOutput(__FUNCTION__, false); $clearOutput = !(self::ITER_KEEP_OUTPUT & $flags); $blocking = !(self::ITER_NON_BLOCKING & $flags); $yieldOut = !(self::ITER_SKIP_OUT & $flags); $yieldErr = !(self::ITER_SKIP_ERR & $flags); while (null !== $this->callback \|\| ($yieldOut && !feof($this->stdout)) \|\| ($yieldErr && !feof($this->stderr))) { if ($yieldOut) { $out = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); if (isset($out[0])) { if ($clearOutput) { $this->clearOutput(); } else { $this->incrementalOutputOffset = ftell($this->stdout); } yield self::OUT => $out; } } if ($yieldErr) { $err = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); if (isset($err[0])) { if ($clearOutput) { $this->clearErrorOutput(); } else { $this->incrementalErrorOutputOffset = ftell($this->stderr); } yield self::ERR => $err; } } if (!$blocking && !isset($out[0]) && !isset($err[0])) { yield self::OUT => ''; } $this->checkTimeout(); $this->readPipesForOutput(__FUNCTION__, $blocking); } } public function clearOutput() { ftruncate($this->stdout, 0); fseek($this->stdout, 0); $this->incrementalOutputOffset = 0; return $this; } public function getErrorOutput() { $this->readPipesForOutput(__FUNCTION__); if (false === $ret = stream_get_contents($this->stderr, -1, 0)) { return ''; } return $ret; } public function getIncrementalErrorOutput() { $this->readPipesForOutput(__FUNCTION__); $latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); $this->incrementalErrorOutputOffset = ftell($this->stderr); if (false === $latest) { return ''; } return $latest; } public function clearErrorOutput() { ftruncate($this->stderr, 0); fseek($this->stderr, 0); $this->incrementalErrorOutputOffset = 0; return $this; } public function getExitCode() { $this->updateStatus(false); return $this->exitcode; } public function getExitCodeText() { if (null === $exitcode = $this->getExitCode()) { return null; } return self::$exitCodes[$exitcode] ?? 'Unknown error'; } public function isSuccessful() { return 0 === $this->getExitCode(); } public function hasBeenSignaled() { $this->requireProcessIsTerminated(__FUNCTION__); return $this->processInformation['signaled']; } public function getTermSignal() { $this->requireProcessIsTerminated(__FUNCTION__); if ($this->isSigchildEnabled() && -1 === $this->processInformation['termsig']) { throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.'); } return $this->processInformation['termsig']; } public function hasBeenStopped() { $this->requireProcessIsTerminated(__FUNCTION__); return $this->processInformation['stopped']; } public function getStopSignal() { $this->requireProcessIsTerminated(__FUNCTION__); return $this->processInformation['stopsig']; } public function isRunning() { if (self::STATUS_STARTED !== $this->status) { return false; } $this->updateStatus(false); return $this->processInformation['running']; } public function isStarted() { return self::STATUS_READY != $this->status; } public function isTerminated() { $this->updateStatus(false); return self::STATUS_TERMINATED == $this->status; } public function getStatus() { $this->updateStatus(false); return $this->status; } public function stop($timeout = 10, $signal = null) { $timeoutMicro = microtime(true) + $timeout; if ($this->isRunning()) { // given SIGTERM may not be defined and that "proc_terminate" uses the constant value and not the constant itself, we use the same here $this->doSignal(15, false); do { usleep(1000); } while ($this->isRunning() && microtime(true) < $timeoutMicro); if ($this->isRunning()) { // Avoid exception here: process is supposed to be running, but it might have stopped just // after this line. In any case, let's silently discard the error, we cannot do anything. $this->doSignal($signal ?: 9, false); } } if ($this->isRunning()) { if (isset($this->fallbackStatus['pid'])) { unset($this->fallbackStatus['pid']); return $this->stop(0, $signal); } $this->close(); } return $this->exitcode; } public function addOutput(string $line) { $this->lastOutputTime = microtime(true); fseek($this->stdout, 0, \SEEK_END); fwrite($this->stdout, $line); fseek($this->stdout, $this->incrementalOutputOffset); } public function addErrorOutput(string $line) { $this->lastOutputTime = microtime(true); fseek($this->stderr, 0, \SEEK_END); fwrite($this->stderr, $line); fseek($this->stderr, $this->incrementalErrorOutputOffset); } public function getLastOutputTime(): ?float { return $this->lastOutputTime; } public function getCommandLine() { return \is_array($this->commandline) ? implode(' ', array_map([$this, 'escapeArgument'], $this->commandline)) : $this->commandline; } public function setCommandLine($commandline) { @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.2.', __METHOD__), \E_USER_DEPRECATED); $this->commandline = $commandline; return $this; } public function getTimeout() { return $this->timeout; } public function getIdleTimeout() { return $this->idleTimeout; } public function setTimeout($timeout) { $this->timeout = $this->validateTimeout($timeout); return $this; } public function setIdleTimeout($timeout) { if (null !== $timeout && $this->outputDisabled) { throw new LogicException('Idle timeout can not be set while the output is disabled.'); } $this->idleTimeout = $this->validateTimeout($timeout); return $this; } public function setTty($tty) { if ('\\' === \DIRECTORY_SEPARATOR && $tty) { throw new RuntimeException('TTY mode is not supported on Windows platform.'); } if ($tty && !self::isTtySupported()) { throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.'); } $this->tty = (bool) $tty; return $this; } public function isTty() { return $this->tty; } public function setPty($bool) { $this->pty = (bool) $bool; return $this; } public function isPty() { return $this->pty; } public function getWorkingDirectory() { if (null === $this->cwd) { // getcwd() will return false if any one of the parent directories does not have // the readable or search mode set, even if the current directory does return getcwd() ?: null; } return $this->cwd; } public function setWorkingDirectory($cwd) { $this->cwd = $cwd; return $this; } public function getEnv() { return $this->env; } public function setEnv(array $env) { $this->env = $env; return $this; } public function getInput() { return $this->input; } public function setInput($input) { if ($this->isRunning()) { throw new LogicException('Input can not be set while the process is running.'); } $this->input = ProcessUtils::validateInput(__METHOD__, $input); return $this; } public function inheritEnvironmentVariables($inheritEnv = true) { @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.4, env variables are always inherited.', __METHOD__), \E_USER_DEPRECATED); if (!$inheritEnv) { throw new InvalidArgumentException('Not inheriting environment variables is not supported.'); } return $this; } public function checkTimeout() { if (self::STATUS_STARTED !== $this->status) { return; } if (null !== $this->timeout && $this->timeout < microtime(true) - $this->starttime) { $this->stop(0); throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_GENERAL); } if (null !== $this->idleTimeout && $this->idleTimeout < microtime(true) - $this->lastOutputTime) { $this->stop(0); throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_IDLE); } } public static function isTtySupported(): bool { static $isTtySupported; if (null === $isTtySupported) { $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes); } return $isTtySupported; } public static function isPtySupported() { static $result; if (null !== $result) { return $result; } if ('\\' === \DIRECTORY_SEPARATOR) { return $result = false; } return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes); } private function getDescriptors(): array { if ($this->input instanceof \Iterator) { $this->input->rewind(); } if ('\\' === \DIRECTORY_SEPARATOR) { $this->processPipes = new WindowsPipes($this->input, !$this->outputDisabled \|\| $this->hasCallback); } else { $this->processPipes = new UnixPipes($this->isTty(), $this->isPty(), $this->input, !$this->outputDisabled \|\| $this->hasCallback); } return $this->processPipes->getDescriptors(); } protected function buildCallback(callable $callback = null) { if ($this->outputDisabled) { return function ($type, $data) use ($callback): bool { return null !== $callback && $callback($type, $data); }; } $out = self::OUT; return function ($type, $data) use ($callback, $out): bool { if ($out == $type) { $this->addOutput($data); } else { $this->addErrorOutput($data); } return null !== $callback && $callback($type, $data); }; } protected function updateStatus($blocking) { if (self::STATUS_STARTED !== $this->status) { return; } $this->processInformation = proc_get_status($this->process); $running = $this->processInformation['running']; $this->readPipes($running && $blocking, '\\' !== \DIRECTORY_SEPARATOR \|\| !$running); if ($this->fallbackStatus && $this->isSigchildEnabled()) { $this->processInformation = $this->fallbackStatus + $this->processInformation; } if (!$running) { $this->close(); } } protected function isSigchildEnabled() { if (null !== self::$sigchild) { return self::$sigchild; } if (!\function_exists('phpinfo')) { return self::$sigchild = false; } ob_start(); phpinfo(\INFO_GENERAL); return self::$sigchild = str_contains(ob_get_clean(), '--enable-sigchild'); } private function readPipesForOutput(string $caller, bool $blocking = false) { if ($this->outputDisabled) { throw new LogicException('Output has been disabled.'); } $this->requireProcessIsStarted($caller); $this->updateStatus($blocking); } private function validateTimeout(?float $timeout): ?float { $timeout = (float) $timeout; if (0.0 === $timeout) { $timeout = null; } elseif ($timeout < 0) { throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.'); } return $timeout; } private function readPipes(bool $blocking, bool $close) { $result = $this->processPipes->readAndWrite($blocking, $close); $callback = $this->callback; foreach ($result as $type => $data) { if (3 !== $type) { $callback(self::STDOUT === $type ? self::OUT : self::ERR, $data); } elseif (!isset($this->fallbackStatus['signaled'])) { $this->fallbackStatus['exitcode'] = (int) $data; } } } private function close(): int { $this->processPipes->close(); if (\is_resource($this->process)) { proc_close($this->process); } $this->exitcode = $this->processInformation['exitcode']; $this->status = self::STATUS_TERMINATED; if (-1 === $this->exitcode) { if ($this->processInformation['signaled'] && 0 < $this->processInformation['termsig']) { // if process has been signaled, no exitcode but a valid termsig, apply Unix convention $this->exitcode = 128 + $this->processInformation['termsig']; } elseif ($this->isSigchildEnabled()) { $this->processInformation['signaled'] = true; $this->processInformation['termsig'] = -1; } } // Free memory from self-reference callback created by buildCallback // Doing so in other contexts like __destruct or by garbage collector is ineffective // Now pipes are closed, so the callback is no longer necessary $this->callback = null; return $this->exitcode; } private function resetProcessData() { $this->starttime = null; $this->callback = null; $this->exitcode = null; $this->fallbackStatus = []; $this->processInformation = null; $this->stdout = fopen('php://temp/maxmemory:'.(1024 1024), 'w+'); $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+'); $this->process = null; $this->latestSignal = null; $this->status = self::STATUS_READY; $this->incrementalOutputOffset = 0; $this->incrementalErrorOutputOffset = 0; } private function doSignal(int $signal, bool $throwException): bool { if (null === $pid = $this->getPid()) { if ($throwException) { throw new LogicException('Can not send signal on a non running process.'); } return false; } if ('\\' === \DIRECTORY_SEPARATOR) { exec(sprintf('taskkill /F /T /PID %d 2>&1', $pid), $output, $exitCode); if ($exitCode && $this->isRunning()) { if ($throwException) { throw new RuntimeException(sprintf('Unable to kill the process (%s).', implode(' ', $output))); } return false; } } else { if (!$this->isSigchildEnabled()) { $ok = @proc_terminate($this->process, $signal); } elseif (\function_exists('posix_kill')) { $ok = @posix_kill($pid, $signal); } elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) { $ok = false === fgets($pipes[2]); } if (!$ok) { if ($throwException) { throw new RuntimeException(sprintf('Error while sending signal "%s".', $signal)); } return false; } } $this->latestSignal = $signal; $this->fallbackStatus['signaled'] = true; $this->fallbackStatus['exitcode'] = -1; $this->fallbackStatus['termsig'] = $this->latestSignal; return true; } private function prepareWindowsCommandLine(string $cmd, array &$env): string { $uid = uniqid('', true); $varCount = 0; $varCache = []; $cmd = preg_replace_callback( '/"(?:( [^"%!^]+ (?: (?: !LF! \| "(?:\^[%!^])?+" ) [^"%!^]+ )++ ) \| [^"]+ )"/x', function ($m) use (&$env, &$varCache, &$varCount, $uid) { if (!isset($m[1])) { return $m[0]; } if (isset($varCache[$m[0]])) { return $varCache[$m[0]]; } if (str_contains($value = $m[1], "\0")) { $value = str_replace("\0", '?', $value); } if (false === strpbrk($value, "\"%!\n")) { return '"'.$value.'"'; } $value = str_replace(['!LF!', '"^!"', '"^%"', '"^^"', '""'], ["\n", '!', '%', '^', '"'], $value); $value = '"'.preg_replace('/(\\\\)"/', '$1$1\\"', $value).'"'; $var = $uid.++$varCount; $env[$var] = $value; return $varCache[$m[0]] = '!'.$var.'!'; }, $cmd ); $cmd = 'cmd /V:ON /E:ON /D /C ('.str_replace("\n", ' ', $cmd).')'; foreach ($this->processPipes->getFiles() as $offset => $filename) { $cmd .= ' '.$offset.'>"'.$filename.'"'; } return $cmd; } private function requireProcessIsStarted(string $functionName) { if (!$this->isStarted()) { throw new LogicException(sprintf('Process must be started before calling "%s()".', $functionName)); } } private function requireProcessIsTerminated(string $functionName) { if (!$this->isTerminated()) { throw new LogicException(sprintf('Process must be terminated before calling "%s()".', $functionName)); } } private function escapeArgument(?string $argument): string { if ('' === $argument \|\| null === $argument) { return '""'; } if ('\\' !== \DIRECTORY_SEPARATOR) { return "'".str_replace("'", "'\\''", $argument)."'"; } if (str_contains($argument, "\0")) { $argument = str_replace("\0", '?', $argument); } if (!preg_match('/[\/()%!^"<>&\|\s]/', $argument)) { return $argument; } $argument = preg_replace('/(\\\\+)$/', '$1$1', $argument); return '"'.str_replace(['"', '^', '%', '!', "\n"], ['""', '"^^"', '"^%"', '"^!"', '!LF!'], $argument).'"'; } private function replacePlaceholders(string $commandline, array $env) { return preg_replace_callback('/"\$\{:([_a-zA-Z]++[_a-zA-Z0-9]*+)\}"/', function ($matches) use ($commandline, $env) { if (!isset($env[$matches[1]]) \|\| false === $env[$matches[1]]) { throw new InvalidArgumentException(sprintf('Command line is missing a value for parameter "%s": ', $matches[1]).$commandline); } return $this->escapeArgument($env[$matches[1]]); }, $commandline); } private function getDefaultEnv(): array { $env = getenv(); $env = ('\\' === \DIRECTORY_SEPARATOR ? array_intersect_ukey($env, $_SERVER, 'strcasecmp') : array_intersect_key($env, $_SERVER)) ?: $env; return $_ENV + ('\\' === \DIRECTORY_SEPARATOR ? array_diff_ukey($env, $_ENV, 'strcasecmp') : $env); } }

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