--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Process;
+
+use Symfony\Component\Process\Exception\InvalidArgumentException;
+use Symfony\Component\Process\Exception\LogicException;
+use Symfony\Component\Process\Exception\ProcessFailedException;
+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;
+
+/**
+ * Process is a thin wrapper around proc_* functions to easily
+ * start independent PHP processes.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Romain Neutron <imprec@gmail.com>
+ */
+class Process
+{
+ const ERR = 'err';
+ const OUT = 'out';
+
+ const STATUS_READY = 'ready';
+ const STATUS_STARTED = 'started';
+ const STATUS_TERMINATED = 'terminated';
+
+ const STDIN = 0;
+ const STDOUT = 1;
+ const STDERR = 2;
+
+ // Timeout Precision in seconds.
+ const TIMEOUT_PRECISION = 0.2;
+
+ private $callback;
+ private $commandline;
+ private $cwd;
+ private $env;
+ private $input;
+ private $starttime;
+ private $lastOutputTime;
+ private $timeout;
+ private $idleTimeout;
+ private $options;
+ private $exitcode;
+ private $fallbackStatus = array();
+ private $processInformation;
+ private $outputDisabled = false;
+ private $stdout;
+ private $stderr;
+ private $enhanceWindowsCompatibility = true;
+ private $enhanceSigchildCompatibility;
+ private $process;
+ private $status = self::STATUS_READY;
+ private $incrementalOutputOffset = 0;
+ private $incrementalErrorOutputOffset = 0;
+ private $tty;
+ private $pty;
+
+ private $useFileHandles = false;
+ /** @var PipesInterface */
+ private $processPipes;
+
+ private $latestSignal;
+
+ private static $sigchild;
+
+ /**
+ * Exit codes translation table.
+ *
+ * User-defined errors must use exit codes in the 64-113 range.
+ *
+ * @var array
+ */
+ public static $exitCodes = array(
+ 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',
+ );
+
+ /**
+ * Constructor.
+ *
+ * @param string $commandline The command line to run
+ * @param string|null $cwd The working directory or null to use the working dir of the current PHP process
+ * @param array|null $env The environment variables or null to use the same environment as the current PHP process
+ * @param string|null $input The input
+ * @param int|float|null $timeout The timeout in seconds or null to disable
+ * @param array $options An array of options for proc_open
+ *
+ * @throws RuntimeException When proc_open is not installed
+ */
+ public function __construct($commandline, $cwd = null, array $env = null, $input = null, $timeout = 60, array $options = array())
+ {
+ if (!function_exists('proc_open')) {
+ throw new RuntimeException('The Process class relies on proc_open, which is not available on your PHP installation.');
+ }
+
+ $this->commandline = $commandline;
+ $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/bug.php?id=51800
+ // @see : https://bugs.php.net/bug.php?id=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;
+ $this->enhanceSigchildCompatibility = '\\' !== DIRECTORY_SEPARATOR && $this->isSigchildEnabled();
+ $this->options = array_replace(array('suppress_errors' => true, 'binary_pipes' => true), $options);
+ }
+
+ public function __destruct()
+ {
+ $this->stop(0);
+ }
+
+ public function __clone()
+ {
+ $this->resetProcessData();
+ }
+
+ /**
+ * Runs the process.
+ *
+ * The callback receives the type of output (out or err) and
+ * some bytes from the output in real-time. It allows to have feedback
+ * from the independent process during execution.
+ *
+ * The STDOUT and STDERR are also available after the process is finished
+ * via the getOutput() and getErrorOutput() methods.
+ *
+ * @param callable|null $callback A PHP callback to run whenever there is some
+ * output available on STDOUT or STDERR
+ *
+ * @return int The exit status code
+ *
+ * @throws RuntimeException When process can't be launched
+ * @throws RuntimeException When process stopped after receiving signal
+ * @throws LogicException In case a callback is provided and output has been disabled
+ */
+ public function run($callback = null)
+ {
+ $this->start($callback);
+
+ return $this->wait();
+ }
+
+ /**
+ * Runs the process.
+ *
+ * This is identical to run() except that an exception is thrown if the process
+ * exits with a non-zero exit code.
+ *
+ * @param callable|null $callback
+ *
+ * @return self
+ *
+ * @throws RuntimeException if PHP was compiled with --enable-sigchild and the enhanced sigchild compatibility mode is not enabled
+ * @throws ProcessFailedException if the process didn't terminate successfully
+ */
+ public function mustRun($callback = null)
+ {
+ if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
+ throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.');
+ }
+
+ if (0 !== $this->run($callback)) {
+ throw new ProcessFailedException($this);
+ }
+
+ return $this;
+ }
+
+ /**
+ * Starts the process and returns after writing the input to STDIN.
+ *
+ * This method blocks until all STDIN data is sent to the process then it
+ * returns while the process runs in the background.
+ *
+ * The termination of the process can be awaited with wait().
+ *
+ * The callback receives the type of output (out or err) and some bytes from
+ * the output in real-time while writing the standard input to the process.
+ * It allows to have feedback from the independent process during execution.
+ *
+ * @param callable|null $callback A PHP callback to run whenever there is some
+ * output available on STDOUT or STDERR
+ *
+ * @throws RuntimeException When process can't be launched
+ * @throws RuntimeException When process is already running
+ * @throws LogicException In case a callback is provided and output has been disabled
+ */
+ public function start($callback = null)
+ {
+ if ($this->isRunning()) {
+ throw new RuntimeException('Process is already running');
+ }
+ if ($this->outputDisabled && null !== $callback) {
+ throw new LogicException('Output has been disabled, enable it to allow the use of a callback.');
+ }
+
+ $this->resetProcessData();
+ $this->starttime = $this->lastOutputTime = microtime(true);
+ $this->callback = $this->buildCallback($callback);
+ $descriptors = $this->getDescriptors();
+
+ $commandline = $this->commandline;
+
+ if ('\\' === DIRECTORY_SEPARATOR && $this->enhanceWindowsCompatibility) {
+ $commandline = 'cmd /V:ON /E:ON /D /C "('.$commandline.')';
+ foreach ($this->processPipes->getFiles() as $offset => $filename) {
+ $commandline .= ' '.$offset.'>'.ProcessUtils::escapeArgument($filename);
+ }
+ $commandline .= '"';
+
+ if (!isset($this->options['bypass_shell'])) {
+ $this->options['bypass_shell'] = true;
+ }
+ } elseif (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
+ // last exit code is output on the fourth pipe and caught to work around --enable-sigchild
+ $descriptors[3] = array('pipe', 'w');
+
+ // See https://unix.stackexchange.com/questions/71205/background-process-pipe-input
+ $commandline = '{ ('.$this->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');
+ }
+
+ $this->process = proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $this->env, $this->options);
+
+ if (!is_resource($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();
+ }
+
+ /**
+ * Restarts the process.
+ *
+ * Be warned that the process is cloned before being started.
+ *
+ * @param callable|null $callback A PHP callback to run whenever there is some
+ * output available on STDOUT or STDERR
+ *
+ * @return $this
+ *
+ * @throws RuntimeException When process can't be launched
+ * @throws RuntimeException When process is already running
+ *
+ * @see start()
+ */
+ public function restart($callback = null)
+ {
+ if ($this->isRunning()) {
+ throw new RuntimeException('Process is already running');
+ }
+
+ $process = clone $this;
+ $process->start($callback);
+
+ return $process;
+ }
+
+ /**
+ * Waits for the process to terminate.
+ *
+ * The callback receives the type of output (out or err) and some bytes
+ * from the output in real-time while writing the standard input to the process.
+ * It allows to have feedback from the independent process during execution.
+ *
+ * @param callable|null $callback A valid PHP callback
+ *
+ * @return int The exitcode of the process
+ *
+ * @throws RuntimeException When process timed out
+ * @throws RuntimeException When process stopped after receiving signal
+ * @throws LogicException When process is not yet started
+ */
+ public function wait($callback = null)
+ {
+ $this->requireProcessIsStarted(__FUNCTION__);
+
+ $this->updateStatus(false);
+ if (null !== $callback) {
+ $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 ($this->isRunning()) {
+ usleep(1000);
+ }
+
+ if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) {
+ throw new RuntimeException(sprintf('The process has been signaled with signal "%s".', $this->processInformation['termsig']));
+ }
+
+ return $this->exitcode;
+ }
+
+ /**
+ * Returns the Pid (process identifier), if applicable.
+ *
+ * @return int|null The process id if running, null otherwise
+ */
+ public function getPid()
+ {
+ return $this->isRunning() ? $this->processInformation['pid'] : null;
+ }
+
+ /**
+ * Sends a POSIX signal to the process.
+ *
+ * @param int $signal A valid POSIX signal (see http://www.php.net/manual/en/pcntl.constants.php)
+ *
+ * @return $this
+ *
+ * @throws LogicException In case the process is not running
+ * @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed
+ * @throws RuntimeException In case of failure
+ */
+ public function signal($signal)
+ {
+ $this->doSignal($signal, true);
+
+ return $this;
+ }
+
+ /**
+ * Disables fetching output and error output from the underlying process.
+ *
+ * @return $this
+ *
+ * @throws RuntimeException In case the process is already running
+ * @throws LogicException if an idle timeout is set
+ */
+ public function disableOutput()
+ {
+ if ($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;
+ }
+
+ /**
+ * Enables fetching output and error output from the underlying process.
+ *
+ * @return $this
+ *
+ * @throws RuntimeException In case the process is already running
+ */
+ public function enableOutput()
+ {
+ if ($this->isRunning()) {
+ throw new RuntimeException('Enabling output while the process is running is not possible.');
+ }
+
+ $this->outputDisabled = false;
+
+ return $this;
+ }
+
+ /**
+ * Returns true in case the output is disabled, false otherwise.
+ *
+ * @return bool
+ */
+ public function isOutputDisabled()
+ {
+ return $this->outputDisabled;
+ }
+
+ /**
+ * Returns the current output of the process (STDOUT).
+ *
+ * @return string The process output
+ *
+ * @throws LogicException in case the output has been disabled
+ * @throws LogicException In case the process is not started
+ */
+ public function getOutput()
+ {
+ $this->readPipesForOutput(__FUNCTION__);
+
+ if (false === $ret = stream_get_contents($this->stdout, -1, 0)) {
+ return '';
+ }
+
+ return $ret;
+ }
+
+ /**
+ * Returns the output incrementally.
+ *
+ * In comparison with the getOutput method which always return the whole
+ * output, this one returns the new output since the last call.
+ *
+ * @return string The process output since the last call
+ *
+ * @throws LogicException in case the output has been disabled
+ * @throws LogicException In case the process is not started
+ */
+ 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;
+ }
+
+ /**
+ * Clears the process output.
+ *
+ * @return $this
+ */
+ public function clearOutput()
+ {
+ ftruncate($this->stdout, 0);
+ fseek($this->stdout, 0);
+ $this->incrementalOutputOffset = 0;
+
+ return $this;
+ }
+
+ /**
+ * Returns the current error output of the process (STDERR).
+ *
+ * @return string The process error output
+ *
+ * @throws LogicException in case the output has been disabled
+ * @throws LogicException In case the process is not started
+ */
+ public function getErrorOutput()
+ {
+ $this->readPipesForOutput(__FUNCTION__);
+
+ if (false === $ret = stream_get_contents($this->stderr, -1, 0)) {
+ return '';
+ }
+
+ return $ret;
+ }
+
+ /**
+ * Returns the errorOutput incrementally.
+ *
+ * In comparison with the getErrorOutput method which always return the
+ * whole error output, this one returns the new error output since the last
+ * call.
+ *
+ * @return string The process error output since the last call
+ *
+ * @throws LogicException in case the output has been disabled
+ * @throws LogicException In case the process is not started
+ */
+ 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;
+ }
+
+ /**
+ * Clears the process output.
+ *
+ * @return $this
+ */
+ public function clearErrorOutput()
+ {
+ ftruncate($this->stderr, 0);
+ fseek($this->stderr, 0);
+ $this->incrementalErrorOutputOffset = 0;
+
+ return $this;
+ }
+
+ /**
+ * Returns the exit code returned by the process.
+ *
+ * @return null|int The exit status code, null if the Process is not terminated
+ *
+ * @throws RuntimeException In case --enable-sigchild is activated and the sigchild compatibility mode is disabled
+ */
+ public function getExitCode()
+ {
+ if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
+ throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.');
+ }
+
+ $this->updateStatus(false);
+
+ return $this->exitcode;
+ }
+
+ /**
+ * Returns a string representation for the exit code returned by the process.
+ *
+ * This method relies on the Unix exit code status standardization
+ * and might not be relevant for other operating systems.
+ *
+ * @return null|string A string representation for the exit status code, null if the Process is not terminated
+ *
+ * @see http://tldp.org/LDP/abs/html/exitcodes.html
+ * @see http://en.wikipedia.org/wiki/Unix_signal
+ */
+ public function getExitCodeText()
+ {
+ if (null === $exitcode = $this->getExitCode()) {
+ return;
+ }
+
+ return isset(self::$exitCodes[$exitcode]) ? self::$exitCodes[$exitcode] : 'Unknown error';
+ }
+
+ /**
+ * Checks if the process ended successfully.
+ *
+ * @return bool true if the process ended successfully, false otherwise
+ */
+ public function isSuccessful()
+ {
+ return 0 === $this->getExitCode();
+ }
+
+ /**
+ * Returns true if the child process has been terminated by an uncaught signal.
+ *
+ * It always returns false on Windows.
+ *
+ * @return bool
+ *
+ * @throws RuntimeException In case --enable-sigchild is activated
+ * @throws LogicException In case the process is not terminated
+ */
+ public function hasBeenSignaled()
+ {
+ $this->requireProcessIsTerminated(__FUNCTION__);
+
+ if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
+ throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.');
+ }
+
+ return $this->processInformation['signaled'];
+ }
+
+ /**
+ * Returns the number of the signal that caused the child process to terminate its execution.
+ *
+ * It is only meaningful if hasBeenSignaled() returns true.
+ *
+ * @return int
+ *
+ * @throws RuntimeException In case --enable-sigchild is activated
+ * @throws LogicException In case the process is not terminated
+ */
+ public function getTermSignal()
+ {
+ $this->requireProcessIsTerminated(__FUNCTION__);
+
+ if ($this->isSigchildEnabled() && (!$this->enhanceSigchildCompatibility || -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'];
+ }
+
+ /**
+ * Returns true if the child process has been stopped by a signal.
+ *
+ * It always returns false on Windows.
+ *
+ * @return bool
+ *
+ * @throws LogicException In case the process is not terminated
+ */
+ public function hasBeenStopped()
+ {
+ $this->requireProcessIsTerminated(__FUNCTION__);
+
+ return $this->processInformation['stopped'];
+ }
+
+ /**
+ * Returns the number of the signal that caused the child process to stop its execution.
+ *
+ * It is only meaningful if hasBeenStopped() returns true.
+ *
+ * @return int
+ *
+ * @throws LogicException In case the process is not terminated
+ */
+ public function getStopSignal()
+ {
+ $this->requireProcessIsTerminated(__FUNCTION__);
+
+ return $this->processInformation['stopsig'];
+ }
+
+ /**
+ * Checks if the process is currently running.
+ *
+ * @return bool true if the process is currently running, false otherwise
+ */
+ public function isRunning()
+ {
+ if (self::STATUS_STARTED !== $this->status) {
+ return false;
+ }
+
+ $this->updateStatus(false);
+
+ return $this->processInformation['running'];
+ }
+
+ /**
+ * Checks if the process has been started with no regard to the current state.
+ *
+ * @return bool true if status is ready, false otherwise
+ */
+ public function isStarted()
+ {
+ return $this->status != self::STATUS_READY;
+ }
+
+ /**
+ * Checks if the process is terminated.
+ *
+ * @return bool true if process is terminated, false otherwise
+ */
+ public function isTerminated()
+ {
+ $this->updateStatus(false);
+
+ return $this->status == self::STATUS_TERMINATED;
+ }
+
+ /**
+ * Gets the process status.
+ *
+ * The status is one of: ready, started, terminated.
+ *
+ * @return string The current process status
+ */
+ public function getStatus()
+ {
+ $this->updateStatus(false);
+
+ return $this->status;
+ }
+
+ /**
+ * Stops the process.
+ *
+ * @param int|float $timeout The timeout in seconds
+ * @param int $signal A POSIX signal to send in case the process has not stop at timeout, default is SIGKILL (9)
+ *
+ * @return int The exit-code of the process
+ */
+ public function stop($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;
+ }
+
+ /**
+ * Adds a line to the STDOUT stream.
+ *
+ * @internal
+ *
+ * @param string $line The line to append
+ */
+ public function addOutput($line)
+ {
+ $this->lastOutputTime = microtime(true);
+
+ fseek($this->stdout, 0, SEEK_END);
+ fwrite($this->stdout, $line);
+ fseek($this->stdout, $this->incrementalOutputOffset);
+ }
+
+ /**
+ * Adds a line to the STDERR stream.
+ *
+ * @internal
+ *
+ * @param string $line The line to append
+ */
+ public function addErrorOutput($line)
+ {
+ $this->lastOutputTime = microtime(true);
+
+ fseek($this->stderr, 0, SEEK_END);
+ fwrite($this->stderr, $line);
+ fseek($this->stderr, $this->incrementalErrorOutputOffset);
+ }
+
+ /**
+ * Gets the command line to be executed.
+ *
+ * @return string The command to execute
+ */
+ public function getCommandLine()
+ {
+ return $this->commandline;
+ }
+
+ /**
+ * Sets the command line to be executed.
+ *
+ * @param string $commandline The command to execute
+ *
+ * @return self The current Process instance
+ */
+ public function setCommandLine($commandline)
+ {
+ $this->commandline = $commandline;
+
+ return $this;
+ }
+
+ /**
+ * Gets the process timeout (max. runtime).
+ *
+ * @return float|null The timeout in seconds or null if it's disabled
+ */
+ public function getTimeout()
+ {
+ return $this->timeout;
+ }
+
+ /**
+ * Gets the process idle timeout (max. time since last output).
+ *
+ * @return float|null The timeout in seconds or null if it's disabled
+ */
+ public function getIdleTimeout()
+ {
+ return $this->idleTimeout;
+ }
+
+ /**
+ * Sets the process timeout (max. runtime).
+ *
+ * To disable the timeout, set this value to null.
+ *
+ * @param int|float|null $timeout The timeout in seconds
+ *
+ * @return self The current Process instance
+ *
+ * @throws InvalidArgumentException if the timeout is negative
+ */
+ public function setTimeout($timeout)
+ {
+ $this->timeout = $this->validateTimeout($timeout);
+
+ return $this;
+ }
+
+ /**
+ * Sets the process idle timeout (max. time since last output).
+ *
+ * To disable the timeout, set this value to null.
+ *
+ * @param int|float|null $timeout The timeout in seconds
+ *
+ * @return self The current Process instance
+ *
+ * @throws LogicException if the output is disabled
+ * @throws InvalidArgumentException if the timeout is negative
+ */
+ public function setIdleTimeout($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;
+ }
+
+ /**
+ * Enables or disables the TTY mode.
+ *
+ * @param bool $tty True to enabled and false to disable
+ *
+ * @return self The current Process instance
+ *
+ * @throws RuntimeException In case the TTY mode is not supported
+ */
+ public function setTty($tty)
+ {
+ if ('\\' === DIRECTORY_SEPARATOR && $tty) {
+ throw new RuntimeException('TTY mode is not supported on Windows platform.');
+ }
+ if ($tty) {
+ static $isTtySupported;
+
+ if (null === $isTtySupported) {
+ $isTtySupported = (bool) @proc_open('echo 1 >/dev/null', array(array('file', '/dev/tty', 'r'), array('file', '/dev/tty', 'w'), array('file', '/dev/tty', 'w')), $pipes);
+ }
+
+ if (!$isTtySupported) {
+ throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.');
+ }
+ }
+
+ $this->tty = (bool) $tty;
+
+ return $this;
+ }
+
+ /**
+ * Checks if the TTY mode is enabled.
+ *
+ * @return bool true if the TTY mode is enabled, false otherwise
+ */
+ public function isTty()
+ {
+ return $this->tty;
+ }
+
+ /**
+ * Sets PTY mode.
+ *
+ * @param bool $bool
+ *
+ * @return self
+ */
+ public function setPty($bool)
+ {
+ $this->pty = (bool) $bool;
+
+ return $this;
+ }
+
+ /**
+ * Returns PTY state.
+ *
+ * @return bool
+ */
+ public function isPty()
+ {
+ return $this->pty;
+ }
+
+ /**
+ * Gets the working directory.
+ *
+ * @return string|null The current working directory or null on failure
+ */
+ 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;
+ }
+
+ /**
+ * Sets the current working directory.
+ *
+ * @param string $cwd The new working directory
+ *
+ * @return self The current Process instance
+ */
+ public function setWorkingDirectory($cwd)
+ {
+ $this->cwd = $cwd;
+
+ return $this;
+ }
+
+ /**
+ * Gets the environment variables.
+ *
+ * @return array The current environment variables
+ */
+ public function getEnv()
+ {
+ return $this->env;
+ }
+
+ /**
+ * Sets the environment variables.
+ *
+ * An environment variable value should be a string.
+ * If it is an array, the variable is ignored.
+ *
+ * That happens in PHP when 'argv' is registered into
+ * the $_ENV array for instance.
+ *
+ * @param array $env The new environment variables
+ *
+ * @return self The current Process instance
+ */
+ public function setEnv(array $env)
+ {
+ // Process can not handle env values that are arrays
+ $env = array_filter($env, function ($value) {
+ return !is_array($value);
+ });
+
+ $this->env = array();
+ foreach ($env as $key => $value) {
+ $this->env[$key] = (string) $value;
+ }
+
+ return $this;
+ }
+
+ /**
+ * Gets the contents of STDIN.
+ *
+ * @return string|null The current contents
+ *
+ * @deprecated since version 2.5, to be removed in 3.0.
+ * Use setInput() instead.
+ * This method is deprecated in favor of getInput.
+ */
+ public function getStdin()
+ {
+ @trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Use the getInput() method instead.', E_USER_DEPRECATED);
+
+ return $this->getInput();
+ }
+
+ /**
+ * Gets the Process input.
+ *
+ * @return null|string The Process input
+ */
+ public function getInput()
+ {
+ return $this->input;
+ }
+
+ /**
+ * Sets the contents of STDIN.
+ *
+ * @param string|null $stdin The new contents
+ *
+ * @return self The current Process instance
+ *
+ * @deprecated since version 2.5, to be removed in 3.0.
+ * Use setInput() instead.
+ *
+ * @throws LogicException In case the process is running
+ * @throws InvalidArgumentException In case the argument is invalid
+ */
+ public function setStdin($stdin)
+ {
+ @trigger_error('The '.__METHOD__.' method is deprecated since version 2.5 and will be removed in 3.0. Use the setInput() method instead.', E_USER_DEPRECATED);
+
+ return $this->setInput($stdin);
+ }
+
+ /**
+ * Sets the input.
+ *
+ * This content will be passed to the underlying process standard input.
+ *
+ * @param mixed $input The content
+ *
+ * @return self The current Process instance
+ *
+ * @throws LogicException In case the process is running
+ *
+ * Passing an object as an input is deprecated since version 2.5 and will be removed in 3.0.
+ */
+ public function setInput($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;
+ }
+
+ /**
+ * Gets the options for proc_open.
+ *
+ * @return array The current options
+ */
+ public function getOptions()
+ {
+ return $this->options;
+ }
+
+ /**
+ * Sets the options for proc_open.
+ *
+ * @param array $options The new options
+ *
+ * @return self The current Process instance
+ */
+ public function setOptions(array $options)
+ {
+ $this->options = $options;
+
+ return $this;
+ }
+
+ /**
+ * Gets whether or not Windows compatibility is enabled.
+ *
+ * This is true by default.
+ *
+ * @return bool
+ */
+ public function getEnhanceWindowsCompatibility()
+ {
+ return $this->enhanceWindowsCompatibility;
+ }
+
+ /**
+ * Sets whether or not Windows compatibility is enabled.
+ *
+ * @param bool $enhance
+ *
+ * @return self The current Process instance
+ */
+ public function setEnhanceWindowsCompatibility($enhance)
+ {
+ $this->enhanceWindowsCompatibility = (bool) $enhance;
+
+ return $this;
+ }
+
+ /**
+ * Returns whether sigchild compatibility mode is activated or not.
+ *
+ * @return bool
+ */
+ public function getEnhanceSigchildCompatibility()
+ {
+ return $this->enhanceSigchildCompatibility;
+ }
+
+ /**
+ * Activates sigchild compatibility mode.
+ *
+ * Sigchild compatibility mode is required to get the exit code and
+ * determine the success of a process when PHP has been compiled with
+ * the --enable-sigchild option
+ *
+ * @param bool $enhance
+ *
+ * @return self The current Process instance
+ */
+ public function setEnhanceSigchildCompatibility($enhance)
+ {
+ $this->enhanceSigchildCompatibility = (bool) $enhance;
+
+ return $this;
+ }
+
+ /**
+ * Performs a check between the timeout definition and the time the process started.
+ *
+ * In case you run a background process (with the start method), you should
+ * trigger this method regularly to ensure the process timeout
+ *
+ * @throws ProcessTimedOutException In case the timeout was reached
+ */
+ public function checkTimeout()
+ {
+ if ($this->status !== self::STATUS_STARTED) {
+ 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);
+ }
+ }
+
+ /**
+ * Returns whether PTY is supported on the current operating system.
+ *
+ * @return bool
+ */
+ 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', array(array('pty'), array('pty'), array('pty')), $pipes);
+ }
+
+ /**
+ * Creates the descriptors needed by the proc_open.
+ *
+ * @return array
+ */
+ private function getDescriptors()
+ {
+ if ('\\' === DIRECTORY_SEPARATOR) {
+ $this->processPipes = WindowsPipes::create($this, $this->input);
+ } else {
+ $this->processPipes = UnixPipes::create($this, $this->input);
+ }
+
+ return $this->processPipes->getDescriptors();
+ }
+
+ /**
+ * Builds up the callback used by wait().
+ *
+ * The callbacks adds all occurred output to the specific buffer and calls
+ * the user callback (if present) with the received output.
+ *
+ * @param callable|null $callback The user defined PHP callback
+ *
+ * @return \Closure A PHP closure
+ */
+ protected function buildCallback($callback)
+ {
+ $that = $this;
+ $out = self::OUT;
+ $callback = function ($type, $data) use ($that, $callback, $out) {
+ if ($out == $type) {
+ $that->addOutput($data);
+ } else {
+ $that->addErrorOutput($data);
+ }
+
+ if (null !== $callback) {
+ call_user_func($callback, $type, $data);
+ }
+ };
+
+ return $callback;
+ }
+
+ /**
+ * Updates the status of the process, reads pipes.
+ *
+ * @param bool $blocking Whether to use a blocking read call
+ */
+ protected function updateStatus($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->enhanceSigchildCompatibility && $this->isSigchildEnabled()) {
+ $this->processInformation = $this->fallbackStatus + $this->processInformation;
+ }
+
+ if (!$running) {
+ $this->close();
+ }
+ }
+
+ /**
+ * Returns whether PHP has been compiled with the '--enable-sigchild' option or not.
+ *
+ * @return bool
+ */
+ protected function isSigchildEnabled()
+ {
+ if (null !== self::$sigchild) {
+ return self::$sigchild;
+ }
+
+ if (!function_exists('phpinfo') || defined('HHVM_VERSION')) {
+ return self::$sigchild = false;
+ }
+
+ ob_start();
+ phpinfo(INFO_GENERAL);
+
+ return self::$sigchild = false !== strpos(ob_get_clean(), '--enable-sigchild');
+ }
+
+ /**
+ * Reads pipes for the freshest output.
+ *
+ * @param $caller The name of the method that needs fresh outputs
+ *
+ * @throws LogicException in case output has been disabled or process is not started
+ */
+ private function readPipesForOutput($caller)
+ {
+ if ($this->outputDisabled) {
+ throw new LogicException('Output has been disabled.');
+ }
+
+ $this->requireProcessIsStarted($caller);
+
+ $this->updateStatus(false);
+ }
+
+ /**
+ * Validates and returns the filtered timeout.
+ *
+ * @param int|float|null $timeout
+ *
+ * @return float|null
+ *
+ * @throws InvalidArgumentException if the given timeout is a negative number
+ */
+ private function validateTimeout($timeout)
+ {
+ $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;
+ }
+
+ /**
+ * Reads pipes, executes callback.
+ *
+ * @param bool $blocking Whether to use blocking calls or not
+ * @param bool $close Whether to close file handles or not
+ */
+ private function readPipes($blocking, $close)
+ {
+ $result = $this->processPipes->readAndWrite($blocking, $close);
+
+ $callback = $this->callback;
+ foreach ($result as $type => $data) {
+ if (3 !== $type) {
+ $callback($type === self::STDOUT ? self::OUT : self::ERR, $data);
+ } elseif (!isset($this->fallbackStatus['signaled'])) {
+ $this->fallbackStatus['exitcode'] = (int) $data;
+ }
+ }
+ }
+
+ /**
+ * Closes process resource, closes file handles, sets the exitcode.
+ *
+ * @return int The exitcode
+ */
+ private function close()
+ {
+ $this->processPipes->close();
+ if (is_resource($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->enhanceSigchildCompatibility && $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;
+ }
+
+ /**
+ * Resets data related to the latest run of the process.
+ */
+ private function resetProcessData()
+ {
+ $this->starttime = null;
+ $this->callback = null;
+ $this->exitcode = null;
+ $this->fallbackStatus = array();
+ $this->processInformation = null;
+ $this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+');
+ $this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'wb+');
+ $this->process = null;
+ $this->latestSignal = null;
+ $this->status = self::STATUS_READY;
+ $this->incrementalOutputOffset = 0;
+ $this->incrementalErrorOutputOffset = 0;
+ }
+
+ /**
+ * Sends a POSIX signal to the process.
+ *
+ * @param int $signal A valid POSIX signal (see http://www.php.net/manual/en/pcntl.constants.php)
+ * @param bool $throwException Whether to throw exception in case signal failed
+ *
+ * @return bool True if the signal was sent successfully, false otherwise
+ *
+ * @throws LogicException In case the process is not running
+ * @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed
+ * @throws RuntimeException In case of failure
+ */
+ private function doSignal($signal, $throwException)
+ {
+ 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->enhanceSigchildCompatibility || !$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), array(2 => array('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 = (int) $signal;
+ $this->fallbackStatus['signaled'] = true;
+ $this->fallbackStatus['exitcode'] = -1;
+ $this->fallbackStatus['termsig'] = $this->latestSignal;
+
+ return true;
+ }
+
+ /**
+ * Ensures the process is running or terminated, throws a LogicException if the process has a not started.
+ *
+ * @param string $functionName The function name that was called
+ *
+ * @throws LogicException If the process has not run.
+ */
+ private function requireProcessIsStarted($functionName)
+ {
+ if (!$this->isStarted()) {
+ throw new LogicException(sprintf('Process must be started before calling %s.', $functionName));
+ }
+ }
+
+ /**
+ * Ensures the process is terminated, throws a LogicException if the process has a status different than `terminated`.
+ *
+ * @param string $functionName The function name that was called
+ *
+ * @throws LogicException If the process is not yet terminated.
+ */
+ private function requireProcessIsTerminated($functionName)
+ {
+ if (!$this->isTerminated()) {
+ throw new LogicException(sprintf('Process must be terminated before calling %s.', $functionName));
+ }
+ }
+}
projects / yaffs-website / blobdiff