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<?php |
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|
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/* |
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* This file is part of the Symfony package. |
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* |
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* (c) Fabien Potencier <[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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|
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namespace Symfony\Component\Process; |
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|
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use Symfony\Component\Process\Exception\InvalidArgumentException; |
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use Symfony\Component\Process\Exception\LogicException; |
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use Symfony\Component\Process\Exception\ProcessFailedException; |
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use Symfony\Component\Process\Exception\ProcessTimedOutException; |
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use Symfony\Component\Process\Exception\RuntimeException; |
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use Symfony\Component\Process\Pipes\PipesInterface; |
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use Symfony\Component\Process\Pipes\UnixPipes; |
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use Symfony\Component\Process\Pipes\WindowsPipes; |
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|
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/** |
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* Process is a thin wrapper around proc_* functions to easily |
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* start independent PHP processes. |
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* |
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* @author Fabien Potencier <[email protected]> |
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* @author Romain Neutron <[email protected]> |
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*/ |
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class Process implements \IteratorAggregate |
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{ |
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const ERR = 'err'; |
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const OUT = 'out'; |
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|
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const STATUS_READY = 'ready'; |
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const STATUS_STARTED = 'started'; |
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const STATUS_TERMINATED = 'terminated'; |
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|
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const STDIN = 0; |
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const STDOUT = 1; |
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const STDERR = 2; |
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|
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// Timeout Precision in seconds. |
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const TIMEOUT_PRECISION = 0.2; |
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|
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const ITER_NON_BLOCKING = 1; // By default, iterating over outputs is a blocking call, use this flag to make it non-blocking |
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const ITER_KEEP_OUTPUT = 2; // By default, outputs are cleared while iterating, use this flag to keep them in memory |
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const ITER_SKIP_OUT = 4; // Use this flag to skip STDOUT while iterating |
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const ITER_SKIP_ERR = 8; // Use this flag to skip STDERR while iterating |
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|
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private $callback; |
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private $hasCallback = false; |
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private $commandline; |
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private $cwd; |
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private $env; |
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private $input; |
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private $starttime; |
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private $lastOutputTime; |
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private $timeout; |
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private $idleTimeout; |
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private $options = ['suppress_errors' => true]; |
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private $exitcode; |
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private $fallbackStatus = []; |
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private $processInformation; |
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private $outputDisabled = false; |
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private $stdout; |
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private $stderr; |
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private $enhanceWindowsCompatibility = true; |
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private $enhanceSigchildCompatibility; |
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private $process; |
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private $status = self::STATUS_READY; |
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private $incrementalOutputOffset = 0; |
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private $incrementalErrorOutputOffset = 0; |
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private $tty = false; |
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private $pty; |
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private $inheritEnv = false; |
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|
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private $useFileHandles = false; |
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/** @var PipesInterface */ |
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private $processPipes; |
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|
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private $latestSignal; |
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|
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private static $sigchild; |
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|
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/** |
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* Exit codes translation table. |
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* |
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* User-defined errors must use exit codes in the 64-113 range. |
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*/ |
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public static $exitCodes = [ |
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0 => 'OK', |
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1 => 'General error', |
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2 => 'Misuse of shell builtins', |
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|
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126 => 'Invoked command cannot execute', |
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127 => 'Command not found', |
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128 => 'Invalid exit argument', |
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|
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// signals |
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129 => 'Hangup', |
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130 => 'Interrupt', |
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131 => 'Quit and dump core', |
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132 => 'Illegal instruction', |
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133 => 'Trace/breakpoint trap', |
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134 => 'Process aborted', |
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135 => 'Bus error: "access to undefined portion of memory object"', |
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136 => 'Floating point exception: "erroneous arithmetic operation"', |
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137 => 'Kill (terminate immediately)', |
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138 => 'User-defined 1', |
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139 => 'Segmentation violation', |
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140 => 'User-defined 2', |
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141 => 'Write to pipe with no one reading', |
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142 => 'Signal raised by alarm', |
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143 => 'Termination (request to terminate)', |
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// 144 - not defined |
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145 => 'Child process terminated, stopped (or continued*)', |
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146 => 'Continue if stopped', |
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147 => 'Stop executing temporarily', |
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148 => 'Terminal stop signal', |
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149 => 'Background process attempting to read from tty ("in")', |
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150 => 'Background process attempting to write to tty ("out")', |
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151 => 'Urgent data available on socket', |
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152 => 'CPU time limit exceeded', |
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153 => 'File size limit exceeded', |
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154 => 'Signal raised by timer counting virtual time: "virtual timer expired"', |
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155 => 'Profiling timer expired', |
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// 156 - not defined |
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157 => 'Pollable event', |
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// 158 - not defined |
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159 => 'Bad syscall', |
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]; |
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|
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/** |
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* @param string|array $commandline The command line to run |
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* @param string|null $cwd The working directory or null to use the working dir of the current PHP process |
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* @param array|null $env The environment variables or null to use the same environment as the current PHP process |
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* @param mixed|null $input The input as stream resource, scalar or \Traversable, or null for no input |
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* @param int|float|null $timeout The timeout in seconds or null to disable |
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* @param array $options An array of options for proc_open |
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* |
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* @throws RuntimeException When proc_open is not installed |
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*/ |
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public function __construct($commandline, $cwd = null, array $env = null, $input = null, $timeout = 60, array $options = null) |
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{ |
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if (!\function_exists('proc_open')) { |
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throw new RuntimeException('The Process class relies on proc_open, which is not available on your PHP installation.'); |
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} |
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|
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$this->commandline = $commandline; |
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$this->cwd = $cwd; |
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|
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// on Windows, if the cwd changed via chdir(), proc_open defaults to the dir where PHP was started |
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// on Gnu/Linux, PHP builds with --enable-maintainer-zts are also affected |
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// @see : https://bugs.php.net/51800 |
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// @see : https://bugs.php.net/50524 |
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if (null === $this->cwd && (\defined('ZEND_THREAD_SAFE') || '\\' === \DIRECTORY_SEPARATOR)) { |
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$this->cwd = getcwd(); |
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} |
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if (null !== $env) { |
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$this->setEnv($env); |
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} |
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|
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$this->setInput($input); |
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$this->setTimeout($timeout); |
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$this->useFileHandles = '\\' === \DIRECTORY_SEPARATOR; |
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$this->pty = false; |
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$this->enhanceSigchildCompatibility = '\\' !== \DIRECTORY_SEPARATOR && $this->isSigchildEnabled(); |
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if (null !== $options) { |
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@trigger_error(sprintf('The $options parameter of the %s constructor is deprecated since Symfony 3.3 and will be removed in 4.0.', __CLASS__), \E_USER_DEPRECATED); |
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$this->options = array_replace($this->options, $options); |
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} |
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} |
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|
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public function __destruct() |
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{ |
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$this->stop(0); |
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} |
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|
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public function __clone() |
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{ |
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$this->resetProcessData(); |
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} |
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|
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/** |
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* Runs the process. |
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* |
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* The callback receives the type of output (out or err) and |
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* some bytes from the output in real-time. It allows to have feedback |
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* from the independent process during execution. |
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* |
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* The STDOUT and STDERR are also available after the process is finished |
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* via the getOutput() and getErrorOutput() methods. |
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* |
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* @param callable|null $callback A PHP callback to run whenever there is some |
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* output available on STDOUT or STDERR |
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* |
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* @return int The exit status code |
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* |
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* @throws RuntimeException When process can't be launched |
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* @throws RuntimeException When process stopped after receiving signal |
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* @throws LogicException In case a callback is provided and output has been disabled |
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* |
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* @final since version 3.3 |
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*/ |
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public function run($callback = null/*, array $env = []*/) |
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{ |
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$env = 1 < \func_num_args() ? func_get_arg(1) : null; |
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$this->start($callback, $env); |
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|
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return $this->wait(); |
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} |
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|
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/** |
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* Runs the process. |
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* |
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* This is identical to run() except that an exception is thrown if the process |
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* exits with a non-zero exit code. |
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* |
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* @return $this |
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* |
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* @throws RuntimeException if PHP was compiled with --enable-sigchild and the enhanced sigchild compatibility mode is not enabled |
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* @throws ProcessFailedException if the process didn't terminate successfully |
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* |
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* @final since version 3.3 |
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*/ |
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public function mustRun(callable $callback = null/*, array $env = []*/) |
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{ |
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if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
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throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.'); |
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} |
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$env = 1 < \func_num_args() ? func_get_arg(1) : null; |
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|
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if (0 !== $this->run($callback, $env)) { |
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throw new ProcessFailedException($this); |
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} |
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|
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return $this; |
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} |
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|
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/** |
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* Starts the process and returns after writing the input to STDIN. |
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* |
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* This method blocks until all STDIN data is sent to the process then it |
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* returns while the process runs in the background. |
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* |
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* The termination of the process can be awaited with wait(). |
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* |
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* The callback receives the type of output (out or err) and some bytes from |
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* the output in real-time while writing the standard input to the process. |
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* It allows to have feedback from the independent process during execution. |
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* |
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* @param callable|null $callback A PHP callback to run whenever there is some |
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* output available on STDOUT or STDERR |
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* |
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* @throws RuntimeException When process can't be launched |
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* @throws RuntimeException When process is already running |
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* @throws LogicException In case a callback is provided and output has been disabled |
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*/ |
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public function start(callable $callback = null/*, array $env = [*/) |
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{ |
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if ($this->isRunning()) { |
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throw new RuntimeException('Process is already running.'); |
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} |
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if (2 <= \func_num_args()) { |
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$env = func_get_arg(1); |
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} else { |
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if (__CLASS__ !== static::class) { |
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$r = new \ReflectionMethod($this, __FUNCTION__); |
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if (__CLASS__ !== $r->getDeclaringClass()->getName() && (2 > $r->getNumberOfParameters() || 'env' !== $r->getParameters()[1]->name)) { |
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@trigger_error(sprintf('The %s::start() method expects a second "$env" argument since Symfony 3.3. It will be made mandatory in 4.0.', static::class), \E_USER_DEPRECATED); |
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} |
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} |
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$env = null; |
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} |
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|
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$this->resetProcessData(); |
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$this->starttime = $this->lastOutputTime = microtime(true); |
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$this->callback = $this->buildCallback($callback); |
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$this->hasCallback = null !== $callback; |
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$descriptors = $this->getDescriptors(); |
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$inheritEnv = $this->inheritEnv; |
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|
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if (\is_array($commandline = $this->commandline)) { |
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$commandline = implode(' ', array_map([$this, 'escapeArgument'], $commandline)); |
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|
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if ('\\' !== \DIRECTORY_SEPARATOR) { |
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// exec is mandatory to deal with sending a signal to the process |
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$commandline = 'exec '.$commandline; |
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} |
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} |
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|
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if (null === $env) { |
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$env = $this->env; |
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} else { |
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if ($this->env) { |
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$env += $this->env; |
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} |
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$inheritEnv = true; |
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} |
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|
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if (null !== $env && $inheritEnv) { |
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$env += $this->getDefaultEnv(); |
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} elseif (null !== $env) { |
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@trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', \E_USER_DEPRECATED); |
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} else { |
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$env = $this->getDefaultEnv(); |
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} |
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if ('\\' === \DIRECTORY_SEPARATOR && $this->enhanceWindowsCompatibility) { |
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$this->options['bypass_shell'] = true; |
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$commandline = $this->prepareWindowsCommandLine($commandline, $env); |
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} elseif (!$this->useFileHandles && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
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// last exit code is output on the fourth pipe and caught to work around --enable-sigchild |
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$descriptors[3] = ['pipe', 'w']; |
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|
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// See https://unix.stackexchange.com/questions/71205/background-process-pipe-input |
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$commandline = '{ ('.$commandline.') <&3 3<&- 3>/dev/null & } 3<&0;'; |
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$commandline .= 'pid=$!; echo $pid >&3; wait $pid; code=$?; echo $code >&3; exit $code'; |
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|
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// Workaround for the bug, when PTS functionality is enabled. |
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// @see : https://bugs.php.net/69442 |
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$ptsWorkaround = fopen(__FILE__, 'r'); |
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} |
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if (\defined('HHVM_VERSION')) { |
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$envPairs = $env; |
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} else { |
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$envPairs = []; |
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foreach ($env as $k => $v) { |
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if (false !== $v) { |
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$envPairs[] = $k.'='.$v; |
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} |
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} |
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} |
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|
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if (!is_dir($this->cwd)) { |
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@trigger_error('The provided cwd does not exist. Command is currently ran against getcwd(). This behavior is deprecated since Symfony 3.4 and will be removed in 4.0.', \E_USER_DEPRECATED); |
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} |
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|
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$this->process = @proc_open($commandline, $descriptors, $this->processPipes->pipes, $this->cwd, $envPairs, $this->options); |
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|
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if (!\is_resource($this->process)) { |
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throw new RuntimeException('Unable to launch a new process.'); |
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} |
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$this->status = self::STATUS_STARTED; |
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|
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if (isset($descriptors[3])) { |
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$this->fallbackStatus['pid'] = (int) fgets($this->processPipes->pipes[3]); |
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} |
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|
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if ($this->tty) { |
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return; |
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} |
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|
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$this->updateStatus(false); |
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$this->checkTimeout(); |
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} |
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|
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/** |
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* Restarts the process. |
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* |
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* Be warned that the process is cloned before being started. |
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* |
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* @param callable|null $callback A PHP callback to run whenever there is some |
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* output available on STDOUT or STDERR |
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* |
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* @return static |
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* |
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* @throws RuntimeException When process can't be launched |
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* @throws RuntimeException When process is already running |
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* |
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* @see start() |
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* |
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* @final since version 3.3 |
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*/ |
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public function restart(callable $callback = null/*, array $env = []*/) |
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{ |
| 377 |
if ($this->isRunning()) { |
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throw new RuntimeException('Process is already running.'); |
| 379 |
} |
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$env = 1 < \func_num_args() ? func_get_arg(1) : null; |
| 381 |
|
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$process = clone $this; |
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$process->start($callback, $env); |
| 384 |
|
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return $process; |
| 386 |
} |
| 387 |
|
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/** |
| 389 |
* Waits for the process to terminate. |
| 390 |
* |
| 391 |
* The callback receives the type of output (out or err) and some bytes |
| 392 |
* from the output in real-time while writing the standard input to the process. |
| 393 |
* It allows to have feedback from the independent process during execution. |
| 394 |
* |
| 395 |
* @param callable|null $callback A valid PHP callback |
| 396 |
* |
| 397 |
* @return int The exitcode of the process |
| 398 |
* |
| 399 |
* @throws RuntimeException When process timed out |
| 400 |
* @throws RuntimeException When process stopped after receiving signal |
| 401 |
* @throws LogicException When process is not yet started |
| 402 |
*/ |
| 403 |
public function wait(callable $callback = null) |
| 404 |
{ |
| 405 |
$this->requireProcessIsStarted(__FUNCTION__); |
| 406 |
|
| 407 |
$this->updateStatus(false); |
| 408 |
|
| 409 |
if (null !== $callback) { |
| 410 |
if (!$this->processPipes->haveReadSupport()) { |
| 411 |
$this->stop(0); |
| 412 |
throw new \LogicException('Pass the callback to the Process::start method or enableOutput to use a callback with Process::wait.'); |
| 413 |
} |
| 414 |
$this->callback = $this->buildCallback($callback); |
| 415 |
} |
| 416 |
|
| 417 |
do { |
| 418 |
$this->checkTimeout(); |
| 419 |
$running = '\\' === \DIRECTORY_SEPARATOR ? $this->isRunning() : $this->processPipes->areOpen(); |
| 420 |
$this->readPipes($running, '\\' !== \DIRECTORY_SEPARATOR || !$running); |
| 421 |
} while ($running); |
| 422 |
|
| 423 |
while ($this->isRunning()) { |
| 424 |
$this->checkTimeout(); |
| 425 |
usleep(1000); |
| 426 |
} |
| 427 |
|
| 428 |
if ($this->processInformation['signaled'] && $this->processInformation['termsig'] !== $this->latestSignal) { |
| 429 |
throw new RuntimeException(sprintf('The process has been signaled with signal "%s".', $this->processInformation['termsig'])); |
| 430 |
} |
| 431 |
|
| 432 |
return $this->exitcode; |
| 433 |
} |
| 434 |
|
| 435 |
/** |
| 436 |
* Returns the Pid (process identifier), if applicable. |
| 437 |
* |
| 438 |
* @return int|null The process id if running, null otherwise |
| 439 |
*/ |
| 440 |
public function getPid() |
| 441 |
{ |
| 442 |
return $this->isRunning() ? $this->processInformation['pid'] : null; |
| 443 |
} |
| 444 |
|
| 445 |
/** |
| 446 |
* Sends a POSIX signal to the process. |
| 447 |
* |
| 448 |
* @param int $signal A valid POSIX signal (see https://php.net/pcntl.constants) |
| 449 |
* |
| 450 |
* @return $this |
| 451 |
* |
| 452 |
* @throws LogicException In case the process is not running |
| 453 |
* @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed |
| 454 |
* @throws RuntimeException In case of failure |
| 455 |
*/ |
| 456 |
public function signal($signal) |
| 457 |
{ |
| 458 |
$this->doSignal($signal, true); |
| 459 |
|
| 460 |
return $this; |
| 461 |
} |
| 462 |
|
| 463 |
/** |
| 464 |
* Disables fetching output and error output from the underlying process. |
| 465 |
* |
| 466 |
* @return $this |
| 467 |
* |
| 468 |
* @throws RuntimeException In case the process is already running |
| 469 |
* @throws LogicException if an idle timeout is set |
| 470 |
*/ |
| 471 |
public function disableOutput() |
| 472 |
{ |
| 473 |
if ($this->isRunning()) { |
| 474 |
throw new RuntimeException('Disabling output while the process is running is not possible.'); |
| 475 |
} |
| 476 |
if (null !== $this->idleTimeout) { |
| 477 |
throw new LogicException('Output can not be disabled while an idle timeout is set.'); |
| 478 |
} |
| 479 |
|
| 480 |
$this->outputDisabled = true; |
| 481 |
|
| 482 |
return $this; |
| 483 |
} |
| 484 |
|
| 485 |
/** |
| 486 |
* Enables fetching output and error output from the underlying process. |
| 487 |
* |
| 488 |
* @return $this |
| 489 |
* |
| 490 |
* @throws RuntimeException In case the process is already running |
| 491 |
*/ |
| 492 |
public function enableOutput() |
| 493 |
{ |
| 494 |
if ($this->isRunning()) { |
| 495 |
throw new RuntimeException('Enabling output while the process is running is not possible.'); |
| 496 |
} |
| 497 |
|
| 498 |
$this->outputDisabled = false; |
| 499 |
|
| 500 |
return $this; |
| 501 |
} |
| 502 |
|
| 503 |
/** |
| 504 |
* Returns true in case the output is disabled, false otherwise. |
| 505 |
* |
| 506 |
* @return bool |
| 507 |
*/ |
| 508 |
public function isOutputDisabled() |
| 509 |
{ |
| 510 |
return $this->outputDisabled; |
| 511 |
} |
| 512 |
|
| 513 |
/** |
| 514 |
* Returns the current output of the process (STDOUT). |
| 515 |
* |
| 516 |
* @return string The process output |
| 517 |
* |
| 518 |
* @throws LogicException in case the output has been disabled |
| 519 |
* @throws LogicException In case the process is not started |
| 520 |
*/ |
| 521 |
public function getOutput() |
| 522 |
{ |
| 523 |
$this->readPipesForOutput(__FUNCTION__); |
| 524 |
|
| 525 |
if (false === $ret = stream_get_contents($this->stdout, -1, 0)) { |
| 526 |
return ''; |
| 527 |
} |
| 528 |
|
| 529 |
return $ret; |
| 530 |
} |
| 531 |
|
| 532 |
/** |
| 533 |
* Returns the output incrementally. |
| 534 |
* |
| 535 |
* In comparison with the getOutput method which always return the whole |
| 536 |
* output, this one returns the new output since the last call. |
| 537 |
* |
| 538 |
* @return string The process output since the last call |
| 539 |
* |
| 540 |
* @throws LogicException in case the output has been disabled |
| 541 |
* @throws LogicException In case the process is not started |
| 542 |
*/ |
| 543 |
public function getIncrementalOutput() |
| 544 |
{ |
| 545 |
$this->readPipesForOutput(__FUNCTION__); |
| 546 |
|
| 547 |
$latest = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); |
| 548 |
$this->incrementalOutputOffset = ftell($this->stdout); |
| 549 |
|
| 550 |
if (false === $latest) { |
| 551 |
return ''; |
| 552 |
} |
| 553 |
|
| 554 |
return $latest; |
| 555 |
} |
| 556 |
|
| 557 |
/** |
| 558 |
* Returns an iterator to the output of the process, with the output type as keys (Process::OUT/ERR). |
| 559 |
* |
| 560 |
* @param int $flags A bit field of Process::ITER_* flags |
| 561 |
* |
| 562 |
* @throws LogicException in case the output has been disabled |
| 563 |
* @throws LogicException In case the process is not started |
| 564 |
* |
| 565 |
* @return \Generator |
| 566 |
*/ |
| 567 |
public function getIterator($flags = 0) |
| 568 |
{ |
| 569 |
$this->readPipesForOutput(__FUNCTION__, false); |
| 570 |
|
| 571 |
$clearOutput = !(self::ITER_KEEP_OUTPUT & $flags); |
| 572 |
$blocking = !(self::ITER_NON_BLOCKING & $flags); |
| 573 |
$yieldOut = !(self::ITER_SKIP_OUT & $flags); |
| 574 |
$yieldErr = !(self::ITER_SKIP_ERR & $flags); |
| 575 |
|
| 576 |
while (null !== $this->callback || ($yieldOut && !feof($this->stdout)) || ($yieldErr && !feof($this->stderr))) { |
| 577 |
if ($yieldOut) { |
| 578 |
$out = stream_get_contents($this->stdout, -1, $this->incrementalOutputOffset); |
| 579 |
|
| 580 |
if (isset($out[0])) { |
| 581 |
if ($clearOutput) { |
| 582 |
$this->clearOutput(); |
| 583 |
} else { |
| 584 |
$this->incrementalOutputOffset = ftell($this->stdout); |
| 585 |
} |
| 586 |
|
| 587 |
yield self::OUT => $out; |
| 588 |
} |
| 589 |
} |
| 590 |
|
| 591 |
if ($yieldErr) { |
| 592 |
$err = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); |
| 593 |
|
| 594 |
if (isset($err[0])) { |
| 595 |
if ($clearOutput) { |
| 596 |
$this->clearErrorOutput(); |
| 597 |
} else { |
| 598 |
$this->incrementalErrorOutputOffset = ftell($this->stderr); |
| 599 |
} |
| 600 |
|
| 601 |
yield self::ERR => $err; |
| 602 |
} |
| 603 |
} |
| 604 |
|
| 605 |
if (!$blocking && !isset($out[0]) && !isset($err[0])) { |
| 606 |
yield self::OUT => ''; |
| 607 |
} |
| 608 |
|
| 609 |
$this->checkTimeout(); |
| 610 |
$this->readPipesForOutput(__FUNCTION__, $blocking); |
| 611 |
} |
| 612 |
} |
| 613 |
|
| 614 |
/** |
| 615 |
* Clears the process output. |
| 616 |
* |
| 617 |
* @return $this |
| 618 |
*/ |
| 619 |
public function clearOutput() |
| 620 |
{ |
| 621 |
ftruncate($this->stdout, 0); |
| 622 |
fseek($this->stdout, 0); |
| 623 |
$this->incrementalOutputOffset = 0; |
| 624 |
|
| 625 |
return $this; |
| 626 |
} |
| 627 |
|
| 628 |
/** |
| 629 |
* Returns the current error output of the process (STDERR). |
| 630 |
* |
| 631 |
* @return string The process error output |
| 632 |
* |
| 633 |
* @throws LogicException in case the output has been disabled |
| 634 |
* @throws LogicException In case the process is not started |
| 635 |
*/ |
| 636 |
public function getErrorOutput() |
| 637 |
{ |
| 638 |
$this->readPipesForOutput(__FUNCTION__); |
| 639 |
|
| 640 |
if (false === $ret = stream_get_contents($this->stderr, -1, 0)) { |
| 641 |
return ''; |
| 642 |
} |
| 643 |
|
| 644 |
return $ret; |
| 645 |
} |
| 646 |
|
| 647 |
/** |
| 648 |
* Returns the errorOutput incrementally. |
| 649 |
* |
| 650 |
* In comparison with the getErrorOutput method which always return the |
| 651 |
* whole error output, this one returns the new error output since the last |
| 652 |
* call. |
| 653 |
* |
| 654 |
* @return string The process error output since the last call |
| 655 |
* |
| 656 |
* @throws LogicException in case the output has been disabled |
| 657 |
* @throws LogicException In case the process is not started |
| 658 |
*/ |
| 659 |
public function getIncrementalErrorOutput() |
| 660 |
{ |
| 661 |
$this->readPipesForOutput(__FUNCTION__); |
| 662 |
|
| 663 |
$latest = stream_get_contents($this->stderr, -1, $this->incrementalErrorOutputOffset); |
| 664 |
$this->incrementalErrorOutputOffset = ftell($this->stderr); |
| 665 |
|
| 666 |
if (false === $latest) { |
| 667 |
return ''; |
| 668 |
} |
| 669 |
|
| 670 |
return $latest; |
| 671 |
} |
| 672 |
|
| 673 |
/** |
| 674 |
* Clears the process output. |
| 675 |
* |
| 676 |
* @return $this |
| 677 |
*/ |
| 678 |
public function clearErrorOutput() |
| 679 |
{ |
| 680 |
ftruncate($this->stderr, 0); |
| 681 |
fseek($this->stderr, 0); |
| 682 |
$this->incrementalErrorOutputOffset = 0; |
| 683 |
|
| 684 |
return $this; |
| 685 |
} |
| 686 |
|
| 687 |
/** |
| 688 |
* Returns the exit code returned by the process. |
| 689 |
* |
| 690 |
* @return int|null The exit status code, null if the Process is not terminated |
| 691 |
* |
| 692 |
* @throws RuntimeException In case --enable-sigchild is activated and the sigchild compatibility mode is disabled |
| 693 |
*/ |
| 694 |
public function getExitCode() |
| 695 |
{ |
| 696 |
if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
| 697 |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. You must use setEnhanceSigchildCompatibility() to use this method.'); |
| 698 |
} |
| 699 |
|
| 700 |
$this->updateStatus(false); |
| 701 |
|
| 702 |
return $this->exitcode; |
| 703 |
} |
| 704 |
|
| 705 |
/** |
| 706 |
* Returns a string representation for the exit code returned by the process. |
| 707 |
* |
| 708 |
* This method relies on the Unix exit code status standardization |
| 709 |
* and might not be relevant for other operating systems. |
| 710 |
* |
| 711 |
* @return string|null A string representation for the exit status code, null if the Process is not terminated |
| 712 |
* |
| 713 |
* @see http://tldp.org/LDP/abs/html/exitcodes.html |
| 714 |
* @see http://en.wikipedia.org/wiki/Unix_signal |
| 715 |
*/ |
| 716 |
public function getExitCodeText() |
| 717 |
{ |
| 718 |
if (null === $exitcode = $this->getExitCode()) { |
| 719 |
return null; |
| 720 |
} |
| 721 |
|
| 722 |
return isset(self::$exitCodes[$exitcode]) ? self::$exitCodes[$exitcode] : 'Unknown error'; |
| 723 |
} |
| 724 |
|
| 725 |
/** |
| 726 |
* Checks if the process ended successfully. |
| 727 |
* |
| 728 |
* @return bool true if the process ended successfully, false otherwise |
| 729 |
*/ |
| 730 |
public function isSuccessful() |
| 731 |
{ |
| 732 |
return 0 === $this->getExitCode(); |
| 733 |
} |
| 734 |
|
| 735 |
/** |
| 736 |
* Returns true if the child process has been terminated by an uncaught signal. |
| 737 |
* |
| 738 |
* It always returns false on Windows. |
| 739 |
* |
| 740 |
* @return bool |
| 741 |
* |
| 742 |
* @throws RuntimeException In case --enable-sigchild is activated |
| 743 |
* @throws LogicException In case the process is not terminated |
| 744 |
*/ |
| 745 |
public function hasBeenSignaled() |
| 746 |
{ |
| 747 |
$this->requireProcessIsTerminated(__FUNCTION__); |
| 748 |
|
| 749 |
if (!$this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
| 750 |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.'); |
| 751 |
} |
| 752 |
|
| 753 |
return $this->processInformation['signaled']; |
| 754 |
} |
| 755 |
|
| 756 |
/** |
| 757 |
* Returns the number of the signal that caused the child process to terminate its execution. |
| 758 |
* |
| 759 |
* It is only meaningful if hasBeenSignaled() returns true. |
| 760 |
* |
| 761 |
* @return int |
| 762 |
* |
| 763 |
* @throws RuntimeException In case --enable-sigchild is activated |
| 764 |
* @throws LogicException In case the process is not terminated |
| 765 |
*/ |
| 766 |
public function getTermSignal() |
| 767 |
{ |
| 768 |
$this->requireProcessIsTerminated(__FUNCTION__); |
| 769 |
|
| 770 |
if ($this->isSigchildEnabled() && (!$this->enhanceSigchildCompatibility || -1 === $this->processInformation['termsig'])) { |
| 771 |
throw new RuntimeException('This PHP has been compiled with --enable-sigchild. Term signal can not be retrieved.'); |
| 772 |
} |
| 773 |
|
| 774 |
return $this->processInformation['termsig']; |
| 775 |
} |
| 776 |
|
| 777 |
/** |
| 778 |
* Returns true if the child process has been stopped by a signal. |
| 779 |
* |
| 780 |
* It always returns false on Windows. |
| 781 |
* |
| 782 |
* @return bool |
| 783 |
* |
| 784 |
* @throws LogicException In case the process is not terminated |
| 785 |
*/ |
| 786 |
public function hasBeenStopped() |
| 787 |
{ |
| 788 |
$this->requireProcessIsTerminated(__FUNCTION__); |
| 789 |
|
| 790 |
return $this->processInformation['stopped']; |
| 791 |
} |
| 792 |
|
| 793 |
/** |
| 794 |
* Returns the number of the signal that caused the child process to stop its execution. |
| 795 |
* |
| 796 |
* It is only meaningful if hasBeenStopped() returns true. |
| 797 |
* |
| 798 |
* @return int |
| 799 |
* |
| 800 |
* @throws LogicException In case the process is not terminated |
| 801 |
*/ |
| 802 |
public function getStopSignal() |
| 803 |
{ |
| 804 |
$this->requireProcessIsTerminated(__FUNCTION__); |
| 805 |
|
| 806 |
return $this->processInformation['stopsig']; |
| 807 |
} |
| 808 |
|
| 809 |
/** |
| 810 |
* Checks if the process is currently running. |
| 811 |
* |
| 812 |
* @return bool true if the process is currently running, false otherwise |
| 813 |
*/ |
| 814 |
public function isRunning() |
| 815 |
{ |
| 816 |
if (self::STATUS_STARTED !== $this->status) { |
| 817 |
return false; |
| 818 |
} |
| 819 |
|
| 820 |
$this->updateStatus(false); |
| 821 |
|
| 822 |
return $this->processInformation['running']; |
| 823 |
} |
| 824 |
|
| 825 |
/** |
| 826 |
* Checks if the process has been started with no regard to the current state. |
| 827 |
* |
| 828 |
* @return bool true if status is ready, false otherwise |
| 829 |
*/ |
| 830 |
public function isStarted() |
| 831 |
{ |
| 832 |
return self::STATUS_READY != $this->status; |
| 833 |
} |
| 834 |
|
| 835 |
/** |
| 836 |
* Checks if the process is terminated. |
| 837 |
* |
| 838 |
* @return bool true if process is terminated, false otherwise |
| 839 |
*/ |
| 840 |
public function isTerminated() |
| 841 |
{ |
| 842 |
$this->updateStatus(false); |
| 843 |
|
| 844 |
return self::STATUS_TERMINATED == $this->status; |
| 845 |
} |
| 846 |
|
| 847 |
/** |
| 848 |
* Gets the process status. |
| 849 |
* |
| 850 |
* The status is one of: ready, started, terminated. |
| 851 |
* |
| 852 |
* @return string The current process status |
| 853 |
*/ |
| 854 |
public function getStatus() |
| 855 |
{ |
| 856 |
$this->updateStatus(false); |
| 857 |
|
| 858 |
return $this->status; |
| 859 |
} |
| 860 |
|
| 861 |
/** |
| 862 |
* Stops the process. |
| 863 |
* |
| 864 |
* @param int|float $timeout The timeout in seconds |
| 865 |
* @param int $signal A POSIX signal to send in case the process has not stop at timeout, default is SIGKILL (9) |
| 866 |
* |
| 867 |
* @return int|null The exit-code of the process or null if it's not running |
| 868 |
*/ |
| 869 |
public function stop($timeout = 10, $signal = null) |
| 870 |
{ |
| 871 |
$timeoutMicro = microtime(true) + $timeout; |
| 872 |
if ($this->isRunning()) { |
| 873 |
// given `SIGTERM` may not be defined and that `proc_terminate` uses the constant value and not the constant itself, we use the same here |
| 874 |
$this->doSignal(15, false); |
| 875 |
do { |
| 876 |
usleep(1000); |
| 877 |
} while ($this->isRunning() && microtime(true) < $timeoutMicro); |
| 878 |
|
| 879 |
if ($this->isRunning()) { |
| 880 |
// Avoid exception here: process is supposed to be running, but it might have stopped just |
| 881 |
// after this line. In any case, let's silently discard the error, we cannot do anything. |
| 882 |
$this->doSignal($signal ?: 9, false); |
| 883 |
} |
| 884 |
} |
| 885 |
|
| 886 |
if ($this->isRunning()) { |
| 887 |
if (isset($this->fallbackStatus['pid'])) { |
| 888 |
unset($this->fallbackStatus['pid']); |
| 889 |
|
| 890 |
return $this->stop(0, $signal); |
| 891 |
} |
| 892 |
$this->close(); |
| 893 |
} |
| 894 |
|
| 895 |
return $this->exitcode; |
| 896 |
} |
| 897 |
|
| 898 |
/** |
| 899 |
* Adds a line to the STDOUT stream. |
| 900 |
* |
| 901 |
* @internal |
| 902 |
* |
| 903 |
* @param string $line The line to append |
| 904 |
*/ |
| 905 |
public function addOutput($line) |
| 906 |
{ |
| 907 |
$this->lastOutputTime = microtime(true); |
| 908 |
|
| 909 |
fseek($this->stdout, 0, \SEEK_END); |
| 910 |
fwrite($this->stdout, $line); |
| 911 |
fseek($this->stdout, $this->incrementalOutputOffset); |
| 912 |
} |
| 913 |
|
| 914 |
/** |
| 915 |
* Adds a line to the STDERR stream. |
| 916 |
* |
| 917 |
* @internal |
| 918 |
* |
| 919 |
* @param string $line The line to append |
| 920 |
*/ |
| 921 |
public function addErrorOutput($line) |
| 922 |
{ |
| 923 |
$this->lastOutputTime = microtime(true); |
| 924 |
|
| 925 |
fseek($this->stderr, 0, \SEEK_END); |
| 926 |
fwrite($this->stderr, $line); |
| 927 |
fseek($this->stderr, $this->incrementalErrorOutputOffset); |
| 928 |
} |
| 929 |
|
| 930 |
/** |
| 931 |
* Gets the command line to be executed. |
| 932 |
* |
| 933 |
* @return string The command to execute |
| 934 |
*/ |
| 935 |
public function getCommandLine() |
| 936 |
{ |
| 937 |
return \is_array($this->commandline) ? implode(' ', array_map([$this, 'escapeArgument'], $this->commandline)) : $this->commandline; |
| 938 |
} |
| 939 |
|
| 940 |
/** |
| 941 |
* Sets the command line to be executed. |
| 942 |
* |
| 943 |
* @param string|array $commandline The command to execute |
| 944 |
* |
| 945 |
* @return $this |
| 946 |
*/ |
| 947 |
public function setCommandLine($commandline) |
| 948 |
{ |
| 949 |
$this->commandline = $commandline; |
| 950 |
|
| 951 |
return $this; |
| 952 |
} |
| 953 |
|
| 954 |
/** |
| 955 |
* Gets the process timeout (max. runtime). |
| 956 |
* |
| 957 |
* @return float|null The timeout in seconds or null if it's disabled |
| 958 |
*/ |
| 959 |
public function getTimeout() |
| 960 |
{ |
| 961 |
return $this->timeout; |
| 962 |
} |
| 963 |
|
| 964 |
/** |
| 965 |
* Gets the process idle timeout (max. time since last output). |
| 966 |
* |
| 967 |
* @return float|null The timeout in seconds or null if it's disabled |
| 968 |
*/ |
| 969 |
public function getIdleTimeout() |
| 970 |
{ |
| 971 |
return $this->idleTimeout; |
| 972 |
} |
| 973 |
|
| 974 |
/** |
| 975 |
* Sets the process timeout (max. runtime) in seconds. |
| 976 |
* |
| 977 |
* To disable the timeout, set this value to null. |
| 978 |
* |
| 979 |
* @param int|float|null $timeout The timeout in seconds |
| 980 |
* |
| 981 |
* @return $this |
| 982 |
* |
| 983 |
* @throws InvalidArgumentException if the timeout is negative |
| 984 |
*/ |
| 985 |
public function setTimeout($timeout) |
| 986 |
{ |
| 987 |
$this->timeout = $this->validateTimeout($timeout); |
| 988 |
|
| 989 |
return $this; |
| 990 |
} |
| 991 |
|
| 992 |
/** |
| 993 |
* Sets the process idle timeout (max. time since last output). |
| 994 |
* |
| 995 |
* To disable the timeout, set this value to null. |
| 996 |
* |
| 997 |
* @param int|float|null $timeout The timeout in seconds |
| 998 |
* |
| 999 |
* @return $this |
| 1000 |
* |
| 1001 |
* @throws LogicException if the output is disabled |
| 1002 |
* @throws InvalidArgumentException if the timeout is negative |
| 1003 |
*/ |
| 1004 |
public function setIdleTimeout($timeout) |
| 1005 |
{ |
| 1006 |
if (null !== $timeout && $this->outputDisabled) { |
| 1007 |
throw new LogicException('Idle timeout can not be set while the output is disabled.'); |
| 1008 |
} |
| 1009 |
|
| 1010 |
$this->idleTimeout = $this->validateTimeout($timeout); |
| 1011 |
|
| 1012 |
return $this; |
| 1013 |
} |
| 1014 |
|
| 1015 |
/** |
| 1016 |
* Enables or disables the TTY mode. |
| 1017 |
* |
| 1018 |
* @param bool $tty True to enabled and false to disable |
| 1019 |
* |
| 1020 |
* @return $this |
| 1021 |
* |
| 1022 |
* @throws RuntimeException In case the TTY mode is not supported |
| 1023 |
*/ |
| 1024 |
public function setTty($tty) |
| 1025 |
{ |
| 1026 |
if ('\\' === \DIRECTORY_SEPARATOR && $tty) { |
| 1027 |
throw new RuntimeException('TTY mode is not supported on Windows platform.'); |
| 1028 |
} |
| 1029 |
if ($tty) { |
| 1030 |
static $isTtySupported; |
| 1031 |
|
| 1032 |
if (null === $isTtySupported) { |
| 1033 |
$isTtySupported = (bool) @proc_open('echo 1 >/dev/null', [['file', '/dev/tty', 'r'], ['file', '/dev/tty', 'w'], ['file', '/dev/tty', 'w']], $pipes); |
| 1034 |
} |
| 1035 |
|
| 1036 |
if (!$isTtySupported) { |
| 1037 |
throw new RuntimeException('TTY mode requires /dev/tty to be read/writable.'); |
| 1038 |
} |
| 1039 |
} |
| 1040 |
|
| 1041 |
$this->tty = (bool) $tty; |
| 1042 |
|
| 1043 |
return $this; |
| 1044 |
} |
| 1045 |
|
| 1046 |
/** |
| 1047 |
* Checks if the TTY mode is enabled. |
| 1048 |
* |
| 1049 |
* @return bool true if the TTY mode is enabled, false otherwise |
| 1050 |
*/ |
| 1051 |
public function isTty() |
| 1052 |
{ |
| 1053 |
return $this->tty; |
| 1054 |
} |
| 1055 |
|
| 1056 |
/** |
| 1057 |
* Sets PTY mode. |
| 1058 |
* |
| 1059 |
* @param bool $bool |
| 1060 |
* |
| 1061 |
* @return $this |
| 1062 |
*/ |
| 1063 |
public function setPty($bool) |
| 1064 |
{ |
| 1065 |
$this->pty = (bool) $bool; |
| 1066 |
|
| 1067 |
return $this; |
| 1068 |
} |
| 1069 |
|
| 1070 |
/** |
| 1071 |
* Returns PTY state. |
| 1072 |
* |
| 1073 |
* @return bool |
| 1074 |
*/ |
| 1075 |
public function isPty() |
| 1076 |
{ |
| 1077 |
return $this->pty; |
| 1078 |
} |
| 1079 |
|
| 1080 |
/** |
| 1081 |
* Gets the working directory. |
| 1082 |
* |
| 1083 |
* @return string|null The current working directory or null on failure |
| 1084 |
*/ |
| 1085 |
public function getWorkingDirectory() |
| 1086 |
{ |
| 1087 |
if (null === $this->cwd) { |
| 1088 |
// getcwd() will return false if any one of the parent directories does not have |
| 1089 |
// the readable or search mode set, even if the current directory does |
| 1090 |
return getcwd() ?: null; |
| 1091 |
} |
| 1092 |
|
| 1093 |
return $this->cwd; |
| 1094 |
} |
| 1095 |
|
| 1096 |
/** |
| 1097 |
* Sets the current working directory. |
| 1098 |
* |
| 1099 |
* @param string $cwd The new working directory |
| 1100 |
* |
| 1101 |
* @return $this |
| 1102 |
*/ |
| 1103 |
public function setWorkingDirectory($cwd) |
| 1104 |
{ |
| 1105 |
$this->cwd = $cwd; |
| 1106 |
|
| 1107 |
return $this; |
| 1108 |
} |
| 1109 |
|
| 1110 |
/** |
| 1111 |
* Gets the environment variables. |
| 1112 |
* |
| 1113 |
* @return array The current environment variables |
| 1114 |
*/ |
| 1115 |
public function getEnv() |
| 1116 |
{ |
| 1117 |
return $this->env; |
| 1118 |
} |
| 1119 |
|
| 1120 |
/** |
| 1121 |
* Sets the environment variables. |
| 1122 |
* |
| 1123 |
* Each environment variable value should be a string. |
| 1124 |
* If it is an array, the variable is ignored. |
| 1125 |
* If it is false or null, it will be removed when |
| 1126 |
* env vars are otherwise inherited. |
| 1127 |
* |
| 1128 |
* That happens in PHP when 'argv' is registered into |
| 1129 |
* the $_ENV array for instance. |
| 1130 |
* |
| 1131 |
* @param array $env The new environment variables |
| 1132 |
* |
| 1133 |
* @return $this |
| 1134 |
*/ |
| 1135 |
public function setEnv(array $env) |
| 1136 |
{ |
| 1137 |
// Process can not handle env values that are arrays |
| 1138 |
$env = array_filter($env, function ($value) { |
| 1139 |
return !\is_array($value); |
| 1140 |
}); |
| 1141 |
|
| 1142 |
$this->env = $env; |
| 1143 |
|
| 1144 |
return $this; |
| 1145 |
} |
| 1146 |
|
| 1147 |
/** |
| 1148 |
* Gets the Process input. |
| 1149 |
* |
| 1150 |
* @return resource|string|\Iterator|null The Process input |
| 1151 |
*/ |
| 1152 |
public function getInput() |
| 1153 |
{ |
| 1154 |
return $this->input; |
| 1155 |
} |
| 1156 |
|
| 1157 |
/** |
| 1158 |
* Sets the input. |
| 1159 |
* |
| 1160 |
* This content will be passed to the underlying process standard input. |
| 1161 |
* |
| 1162 |
* @param string|int|float|bool|resource|\Traversable|null $input The content |
| 1163 |
* |
| 1164 |
* @return $this |
| 1165 |
* |
| 1166 |
* @throws LogicException In case the process is running |
| 1167 |
*/ |
| 1168 |
public function setInput($input) |
| 1169 |
{ |
| 1170 |
if ($this->isRunning()) { |
| 1171 |
throw new LogicException('Input can not be set while the process is running.'); |
| 1172 |
} |
| 1173 |
|
| 1174 |
$this->input = ProcessUtils::validateInput(__METHOD__, $input); |
| 1175 |
|
| 1176 |
return $this; |
| 1177 |
} |
| 1178 |
|
| 1179 |
/** |
| 1180 |
* Gets the options for proc_open. |
| 1181 |
* |
| 1182 |
* @return array The current options |
| 1183 |
* |
| 1184 |
* @deprecated since version 3.3, to be removed in 4.0. |
| 1185 |
*/ |
| 1186 |
public function getOptions() |
| 1187 |
{ |
| 1188 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), \E_USER_DEPRECATED); |
| 1189 |
|
| 1190 |
return $this->options; |
| 1191 |
} |
| 1192 |
|
| 1193 |
/** |
| 1194 |
* Sets the options for proc_open. |
| 1195 |
* |
| 1196 |
* @param array $options The new options |
| 1197 |
* |
| 1198 |
* @return $this |
| 1199 |
* |
| 1200 |
* @deprecated since version 3.3, to be removed in 4.0. |
| 1201 |
*/ |
| 1202 |
public function setOptions(array $options) |
| 1203 |
{ |
| 1204 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0.', __METHOD__), \E_USER_DEPRECATED); |
| 1205 |
|
| 1206 |
$this->options = $options; |
| 1207 |
|
| 1208 |
return $this; |
| 1209 |
} |
| 1210 |
|
| 1211 |
/** |
| 1212 |
* Gets whether or not Windows compatibility is enabled. |
| 1213 |
* |
| 1214 |
* This is true by default. |
| 1215 |
* |
| 1216 |
* @return bool |
| 1217 |
* |
| 1218 |
* @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled. |
| 1219 |
*/ |
| 1220 |
public function getEnhanceWindowsCompatibility() |
| 1221 |
{ |
| 1222 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), \E_USER_DEPRECATED); |
| 1223 |
|
| 1224 |
return $this->enhanceWindowsCompatibility; |
| 1225 |
} |
| 1226 |
|
| 1227 |
/** |
| 1228 |
* Sets whether or not Windows compatibility is enabled. |
| 1229 |
* |
| 1230 |
* @param bool $enhance |
| 1231 |
* |
| 1232 |
* @return $this |
| 1233 |
* |
| 1234 |
* @deprecated since version 3.3, to be removed in 4.0. Enhanced Windows compatibility will always be enabled. |
| 1235 |
*/ |
| 1236 |
public function setEnhanceWindowsCompatibility($enhance) |
| 1237 |
{ |
| 1238 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Enhanced Windows compatibility will always be enabled.', __METHOD__), \E_USER_DEPRECATED); |
| 1239 |
|
| 1240 |
$this->enhanceWindowsCompatibility = (bool) $enhance; |
| 1241 |
|
| 1242 |
return $this; |
| 1243 |
} |
| 1244 |
|
| 1245 |
/** |
| 1246 |
* Returns whether sigchild compatibility mode is activated or not. |
| 1247 |
* |
| 1248 |
* @return bool |
| 1249 |
* |
| 1250 |
* @deprecated since version 3.3, to be removed in 4.0. Sigchild compatibility will always be enabled. |
| 1251 |
*/ |
| 1252 |
public function getEnhanceSigchildCompatibility() |
| 1253 |
{ |
| 1254 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), \E_USER_DEPRECATED); |
| 1255 |
|
| 1256 |
return $this->enhanceSigchildCompatibility; |
| 1257 |
} |
| 1258 |
|
| 1259 |
/** |
| 1260 |
* Activates sigchild compatibility mode. |
| 1261 |
* |
| 1262 |
* Sigchild compatibility mode is required to get the exit code and |
| 1263 |
* determine the success of a process when PHP has been compiled with |
| 1264 |
* the --enable-sigchild option |
| 1265 |
* |
| 1266 |
* @param bool $enhance |
| 1267 |
* |
| 1268 |
* @return $this |
| 1269 |
* |
| 1270 |
* @deprecated since version 3.3, to be removed in 4.0. |
| 1271 |
*/ |
| 1272 |
public function setEnhanceSigchildCompatibility($enhance) |
| 1273 |
{ |
| 1274 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Sigchild compatibility will always be enabled.', __METHOD__), \E_USER_DEPRECATED); |
| 1275 |
|
| 1276 |
$this->enhanceSigchildCompatibility = (bool) $enhance; |
| 1277 |
|
| 1278 |
return $this; |
| 1279 |
} |
| 1280 |
|
| 1281 |
/** |
| 1282 |
* Sets whether environment variables will be inherited or not. |
| 1283 |
* |
| 1284 |
* @param bool $inheritEnv |
| 1285 |
* |
| 1286 |
* @return $this |
| 1287 |
*/ |
| 1288 |
public function inheritEnvironmentVariables($inheritEnv = true) |
| 1289 |
{ |
| 1290 |
if (!$inheritEnv) { |
| 1291 |
@trigger_error('Not inheriting environment variables is deprecated since Symfony 3.3 and will always happen in 4.0. Set "Process::inheritEnvironmentVariables()" to true instead.', \E_USER_DEPRECATED); |
| 1292 |
} |
| 1293 |
|
| 1294 |
$this->inheritEnv = (bool) $inheritEnv; |
| 1295 |
|
| 1296 |
return $this; |
| 1297 |
} |
| 1298 |
|
| 1299 |
/** |
| 1300 |
* Returns whether environment variables will be inherited or not. |
| 1301 |
* |
| 1302 |
* @return bool |
| 1303 |
* |
| 1304 |
* @deprecated since version 3.3, to be removed in 4.0. Environment variables will always be inherited. |
| 1305 |
*/ |
| 1306 |
public function areEnvironmentVariablesInherited() |
| 1307 |
{ |
| 1308 |
@trigger_error(sprintf('The %s() method is deprecated since Symfony 3.3 and will be removed in 4.0. Environment variables will always be inherited.', __METHOD__), \E_USER_DEPRECATED); |
| 1309 |
|
| 1310 |
return $this->inheritEnv; |
| 1311 |
} |
| 1312 |
|
| 1313 |
/** |
| 1314 |
* Performs a check between the timeout definition and the time the process started. |
| 1315 |
* |
| 1316 |
* In case you run a background process (with the start method), you should |
| 1317 |
* trigger this method regularly to ensure the process timeout |
| 1318 |
* |
| 1319 |
* @throws ProcessTimedOutException In case the timeout was reached |
| 1320 |
*/ |
| 1321 |
public function checkTimeout() |
| 1322 |
{ |
| 1323 |
if (self::STATUS_STARTED !== $this->status) { |
| 1324 |
return; |
| 1325 |
} |
| 1326 |
|
| 1327 |
if (null !== $this->timeout && $this->timeout < microtime(true) - $this->starttime) { |
| 1328 |
$this->stop(0); |
| 1329 |
|
| 1330 |
throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_GENERAL); |
| 1331 |
} |
| 1332 |
|
| 1333 |
if (null !== $this->idleTimeout && $this->idleTimeout < microtime(true) - $this->lastOutputTime) { |
| 1334 |
$this->stop(0); |
| 1335 |
|
| 1336 |
throw new ProcessTimedOutException($this, ProcessTimedOutException::TYPE_IDLE); |
| 1337 |
} |
| 1338 |
} |
| 1339 |
|
| 1340 |
/** |
| 1341 |
* Returns whether PTY is supported on the current operating system. |
| 1342 |
* |
| 1343 |
* @return bool |
| 1344 |
*/ |
| 1345 |
public static function isPtySupported() |
| 1346 |
{ |
| 1347 |
static $result; |
| 1348 |
|
| 1349 |
if (null !== $result) { |
| 1350 |
return $result; |
| 1351 |
} |
| 1352 |
|
| 1353 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 1354 |
return $result = false; |
| 1355 |
} |
| 1356 |
|
| 1357 |
return $result = (bool) @proc_open('echo 1 >/dev/null', [['pty'], ['pty'], ['pty']], $pipes); |
| 1358 |
} |
| 1359 |
|
| 1360 |
/** |
| 1361 |
* Creates the descriptors needed by the proc_open. |
| 1362 |
* |
| 1363 |
* @return array |
| 1364 |
*/ |
| 1365 |
private function getDescriptors() |
| 1366 |
{ |
| 1367 |
if ($this->input instanceof \Iterator) { |
| 1368 |
$this->input->rewind(); |
| 1369 |
} |
| 1370 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 1371 |
$this->processPipes = new WindowsPipes($this->input, !$this->outputDisabled || $this->hasCallback); |
| 1372 |
} else { |
| 1373 |
$this->processPipes = new UnixPipes($this->isTty(), $this->isPty(), $this->input, !$this->outputDisabled || $this->hasCallback); |
| 1374 |
} |
| 1375 |
|
| 1376 |
return $this->processPipes->getDescriptors(); |
| 1377 |
} |
| 1378 |
|
| 1379 |
/** |
| 1380 |
* Builds up the callback used by wait(). |
| 1381 |
* |
| 1382 |
* The callbacks adds all occurred output to the specific buffer and calls |
| 1383 |
* the user callback (if present) with the received output. |
| 1384 |
* |
| 1385 |
* @param callable|null $callback The user defined PHP callback |
| 1386 |
* |
| 1387 |
* @return \Closure A PHP closure |
| 1388 |
*/ |
| 1389 |
protected function buildCallback(callable $callback = null) |
| 1390 |
{ |
| 1391 |
if ($this->outputDisabled) { |
| 1392 |
return function ($type, $data) use ($callback) { |
| 1393 |
if (null !== $callback) { |
| 1394 |
\call_user_func($callback, $type, $data); |
| 1395 |
} |
| 1396 |
}; |
| 1397 |
} |
| 1398 |
|
| 1399 |
$out = self::OUT; |
| 1400 |
|
| 1401 |
return function ($type, $data) use ($callback, $out) { |
| 1402 |
if ($out == $type) { |
| 1403 |
$this->addOutput($data); |
| 1404 |
} else { |
| 1405 |
$this->addErrorOutput($data); |
| 1406 |
} |
| 1407 |
|
| 1408 |
if (null !== $callback) { |
| 1409 |
\call_user_func($callback, $type, $data); |
| 1410 |
} |
| 1411 |
}; |
| 1412 |
} |
| 1413 |
|
| 1414 |
/** |
| 1415 |
* Updates the status of the process, reads pipes. |
| 1416 |
* |
| 1417 |
* @param bool $blocking Whether to use a blocking read call |
| 1418 |
*/ |
| 1419 |
protected function updateStatus($blocking) |
| 1420 |
{ |
| 1421 |
if (self::STATUS_STARTED !== $this->status) { |
| 1422 |
return; |
| 1423 |
} |
| 1424 |
|
| 1425 |
$this->processInformation = proc_get_status($this->process); |
| 1426 |
$running = $this->processInformation['running']; |
| 1427 |
|
| 1428 |
$this->readPipes($running && $blocking, '\\' !== \DIRECTORY_SEPARATOR || !$running); |
| 1429 |
|
| 1430 |
if ($this->fallbackStatus && $this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
| 1431 |
$this->processInformation = $this->fallbackStatus + $this->processInformation; |
| 1432 |
} |
| 1433 |
|
| 1434 |
if (!$running) { |
| 1435 |
$this->close(); |
| 1436 |
} |
| 1437 |
} |
| 1438 |
|
| 1439 |
/** |
| 1440 |
* Returns whether PHP has been compiled with the '--enable-sigchild' option or not. |
| 1441 |
* |
| 1442 |
* @return bool |
| 1443 |
*/ |
| 1444 |
protected function isSigchildEnabled() |
| 1445 |
{ |
| 1446 |
if (null !== self::$sigchild) { |
| 1447 |
return self::$sigchild; |
| 1448 |
} |
| 1449 |
|
| 1450 |
if (!\function_exists('phpinfo') || \defined('HHVM_VERSION')) { |
| 1451 |
return self::$sigchild = false; |
| 1452 |
} |
| 1453 |
|
| 1454 |
ob_start(); |
| 1455 |
phpinfo(\INFO_GENERAL); |
| 1456 |
|
| 1457 |
return self::$sigchild = false !== strpos(ob_get_clean(), '--enable-sigchild'); |
| 1458 |
} |
| 1459 |
|
| 1460 |
/** |
| 1461 |
* Reads pipes for the freshest output. |
| 1462 |
* |
| 1463 |
* @param string $caller The name of the method that needs fresh outputs |
| 1464 |
* @param bool $blocking Whether to use blocking calls or not |
| 1465 |
* |
| 1466 |
* @throws LogicException in case output has been disabled or process is not started |
| 1467 |
*/ |
| 1468 |
private function readPipesForOutput($caller, $blocking = false) |
| 1469 |
{ |
| 1470 |
if ($this->outputDisabled) { |
| 1471 |
throw new LogicException('Output has been disabled.'); |
| 1472 |
} |
| 1473 |
|
| 1474 |
$this->requireProcessIsStarted($caller); |
| 1475 |
|
| 1476 |
$this->updateStatus($blocking); |
| 1477 |
} |
| 1478 |
|
| 1479 |
/** |
| 1480 |
* Validates and returns the filtered timeout. |
| 1481 |
* |
| 1482 |
* @param int|float|null $timeout |
| 1483 |
* |
| 1484 |
* @return float|null |
| 1485 |
* |
| 1486 |
* @throws InvalidArgumentException if the given timeout is a negative number |
| 1487 |
*/ |
| 1488 |
private function validateTimeout($timeout) |
| 1489 |
{ |
| 1490 |
$timeout = (float) $timeout; |
| 1491 |
|
| 1492 |
if (0.0 === $timeout) { |
| 1493 |
$timeout = null; |
| 1494 |
} elseif ($timeout < 0) { |
| 1495 |
throw new InvalidArgumentException('The timeout value must be a valid positive integer or float number.'); |
| 1496 |
} |
| 1497 |
|
| 1498 |
return $timeout; |
| 1499 |
} |
| 1500 |
|
| 1501 |
/** |
| 1502 |
* Reads pipes, executes callback. |
| 1503 |
* |
| 1504 |
* @param bool $blocking Whether to use blocking calls or not |
| 1505 |
* @param bool $close Whether to close file handles or not |
| 1506 |
*/ |
| 1507 |
private function readPipes($blocking, $close) |
| 1508 |
{ |
| 1509 |
$result = $this->processPipes->readAndWrite($blocking, $close); |
| 1510 |
|
| 1511 |
$callback = $this->callback; |
| 1512 |
foreach ($result as $type => $data) { |
| 1513 |
if (3 !== $type) { |
| 1514 |
$callback(self::STDOUT === $type ? self::OUT : self::ERR, $data); |
| 1515 |
} elseif (!isset($this->fallbackStatus['signaled'])) { |
| 1516 |
$this->fallbackStatus['exitcode'] = (int) $data; |
| 1517 |
} |
| 1518 |
} |
| 1519 |
} |
| 1520 |
|
| 1521 |
/** |
| 1522 |
* Closes process resource, closes file handles, sets the exitcode. |
| 1523 |
* |
| 1524 |
* @return int The exitcode |
| 1525 |
*/ |
| 1526 |
private function close() |
| 1527 |
{ |
| 1528 |
$this->processPipes->close(); |
| 1529 |
if (\is_resource($this->process)) { |
| 1530 |
proc_close($this->process); |
| 1531 |
} |
| 1532 |
$this->exitcode = $this->processInformation['exitcode']; |
| 1533 |
$this->status = self::STATUS_TERMINATED; |
| 1534 |
|
| 1535 |
if (-1 === $this->exitcode) { |
| 1536 |
if ($this->processInformation['signaled'] && 0 < $this->processInformation['termsig']) { |
| 1537 |
// if process has been signaled, no exitcode but a valid termsig, apply Unix convention |
| 1538 |
$this->exitcode = 128 + $this->processInformation['termsig']; |
| 1539 |
} elseif ($this->enhanceSigchildCompatibility && $this->isSigchildEnabled()) { |
| 1540 |
$this->processInformation['signaled'] = true; |
| 1541 |
$this->processInformation['termsig'] = -1; |
| 1542 |
} |
| 1543 |
} |
| 1544 |
|
| 1545 |
// Free memory from self-reference callback created by buildCallback |
| 1546 |
// Doing so in other contexts like __destruct or by garbage collector is ineffective |
| 1547 |
// Now pipes are closed, so the callback is no longer necessary |
| 1548 |
$this->callback = null; |
| 1549 |
|
| 1550 |
return $this->exitcode; |
| 1551 |
} |
| 1552 |
|
| 1553 |
/** |
| 1554 |
* Resets data related to the latest run of the process. |
| 1555 |
*/ |
| 1556 |
private function resetProcessData() |
| 1557 |
{ |
| 1558 |
$this->starttime = null; |
| 1559 |
$this->callback = null; |
| 1560 |
$this->exitcode = null; |
| 1561 |
$this->fallbackStatus = []; |
| 1562 |
$this->processInformation = null; |
| 1563 |
$this->stdout = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b'); |
| 1564 |
$this->stderr = fopen('php://temp/maxmemory:'.(1024 * 1024), 'w+b'); |
| 1565 |
$this->process = null; |
| 1566 |
$this->latestSignal = null; |
| 1567 |
$this->status = self::STATUS_READY; |
| 1568 |
$this->incrementalOutputOffset = 0; |
| 1569 |
$this->incrementalErrorOutputOffset = 0; |
| 1570 |
} |
| 1571 |
|
| 1572 |
/** |
| 1573 |
* Sends a POSIX signal to the process. |
| 1574 |
* |
| 1575 |
* @param int $signal A valid POSIX signal (see https://php.net/pcntl.constants) |
| 1576 |
* @param bool $throwException Whether to throw exception in case signal failed |
| 1577 |
* |
| 1578 |
* @return bool True if the signal was sent successfully, false otherwise |
| 1579 |
* |
| 1580 |
* @throws LogicException In case the process is not running |
| 1581 |
* @throws RuntimeException In case --enable-sigchild is activated and the process can't be killed |
| 1582 |
* @throws RuntimeException In case of failure |
| 1583 |
*/ |
| 1584 |
private function doSignal($signal, $throwException) |
| 1585 |
{ |
| 1586 |
if (null === $pid = $this->getPid()) { |
| 1587 |
if ($throwException) { |
| 1588 |
throw new LogicException('Can not send signal on a non running process.'); |
| 1589 |
} |
| 1590 |
|
| 1591 |
return false; |
| 1592 |
} |
| 1593 |
|
| 1594 |
if ('\\' === \DIRECTORY_SEPARATOR) { |
| 1595 |
exec(sprintf('taskkill /F /T /PID %d 2>&1', $pid), $output, $exitCode); |
| 1596 |
if ($exitCode && $this->isRunning()) { |
| 1597 |
if ($throwException) { |
| 1598 |
throw new RuntimeException(sprintf('Unable to kill the process (%s).', implode(' ', $output))); |
| 1599 |
} |
| 1600 |
|
| 1601 |
return false; |
| 1602 |
} |
| 1603 |
} else { |
| 1604 |
if (!$this->enhanceSigchildCompatibility || !$this->isSigchildEnabled()) { |
| 1605 |
$ok = @proc_terminate($this->process, $signal); |
| 1606 |
} elseif (\function_exists('posix_kill')) { |
| 1607 |
$ok = @posix_kill($pid, $signal); |
| 1608 |
} elseif ($ok = proc_open(sprintf('kill -%d %d', $signal, $pid), [2 => ['pipe', 'w']], $pipes)) { |
| 1609 |
$ok = false === fgets($pipes[2]); |
| 1610 |
} |
| 1611 |
if (!$ok) { |
| 1612 |
if ($throwException) { |
| 1613 |
throw new RuntimeException(sprintf('Error while sending signal `%s`.', $signal)); |
| 1614 |
} |
| 1615 |
|
| 1616 |
return false; |
| 1617 |
} |
| 1618 |
} |
| 1619 |
|
| 1620 |
$this->latestSignal = (int) $signal; |
| 1621 |
$this->fallbackStatus['signaled'] = true; |
| 1622 |
$this->fallbackStatus['exitcode'] = -1; |
| 1623 |
$this->fallbackStatus['termsig'] = $this->latestSignal; |
| 1624 |
|
| 1625 |
return true; |
| 1626 |
} |
| 1627 |
|
| 1628 |
private function prepareWindowsCommandLine($cmd, array &$env) |
| 1629 |
{ |
| 1630 |
$uid = uniqid('', true); |
| 1631 |
$varCount = 0; |
| 1632 |
$varCache = []; |
| 1633 |
$cmd = preg_replace_callback( |
| 1634 |
'/"(?:( |
| 1635 |
[^"%!^]*+ |
| 1636 |
(?: |
| 1637 |
(?: !LF! | "(?:\^[%!^])?+" ) |
| 1638 |
[^"%!^]*+ |
| 1639 |
)++ |
| 1640 |
) | [^"]*+ )"/x', |
| 1641 |
function ($m) use (&$env, &$varCache, &$varCount, $uid) { |
| 1642 |
if (!isset($m[1])) { |
| 1643 |
return $m[0]; |
| 1644 |
} |
| 1645 |
if (isset($varCache[$m[0]])) { |
| 1646 |
return $varCache[$m[0]]; |
| 1647 |
} |
| 1648 |
if (false !== strpos($value = $m[1], "\0")) { |
| 1649 |
$value = str_replace("\0", '?', $value); |
| 1650 |
} |
| 1651 |
if (false === strpbrk($value, "\"%!\n")) { |
| 1652 |
return '"'.$value.'"'; |
| 1653 |
} |
| 1654 |
|
| 1655 |
$value = str_replace(['!LF!', '"^!"', '"^%"', '"^^"', '""'], ["\n", '!', '%', '^', '"'], $value); |
| 1656 |
$value = '"'.preg_replace('/(\\\\*)"/', '$1$1\\"', $value).'"'; |
| 1657 |
$var = $uid.++$varCount; |
| 1658 |
|
| 1659 |
$env[$var] = $value; |
| 1660 |
|
| 1661 |
return $varCache[$m[0]] = '!'.$var.'!'; |
| 1662 |
}, |
| 1663 |
$cmd |
| 1664 |
); |
| 1665 |
|
| 1666 |
$cmd = 'cmd /V:ON /E:ON /D /C ('.str_replace("\n", ' ', $cmd).')'; |
| 1667 |
foreach ($this->processPipes->getFiles() as $offset => $filename) { |
| 1668 |
$cmd .= ' '.$offset.'>"'.$filename.'"'; |
| 1669 |
} |
| 1670 |
|
| 1671 |
return $cmd; |
| 1672 |
} |
| 1673 |
|
| 1674 |
/** |
| 1675 |
* Ensures the process is running or terminated, throws a LogicException if the process has a not started. |
| 1676 |
* |
| 1677 |
* @param string $functionName The function name that was called |
| 1678 |
* |
| 1679 |
* @throws LogicException if the process has not run |
| 1680 |
*/ |
| 1681 |
private function requireProcessIsStarted($functionName) |
| 1682 |
{ |
| 1683 |
if (!$this->isStarted()) { |
| 1684 |
throw new LogicException(sprintf('Process must be started before calling "%s()".', $functionName)); |
| 1685 |
} |
| 1686 |
} |
| 1687 |
|
| 1688 |
/** |
| 1689 |
* Ensures the process is terminated, throws a LogicException if the process has a status different than `terminated`. |
| 1690 |
* |
| 1691 |
* @param string $functionName The function name that was called |
| 1692 |
* |
| 1693 |
* @throws LogicException if the process is not yet terminated |
| 1694 |
*/ |
| 1695 |
private function requireProcessIsTerminated($functionName) |
| 1696 |
{ |
| 1697 |
if (!$this->isTerminated()) { |
| 1698 |
throw new LogicException(sprintf('Process must be terminated before calling "%s()".', $functionName)); |
| 1699 |
} |
| 1700 |
} |
| 1701 |
|
| 1702 |
/** |
| 1703 |
* Escapes a string to be used as a shell argument. |
| 1704 |
* |
| 1705 |
* @param string $argument The argument that will be escaped |
| 1706 |
* |
| 1707 |
* @return string The escaped argument |
| 1708 |
*/ |
| 1709 |
private function escapeArgument($argument) |
| 1710 |
{ |
| 1711 |
if ('\\' !== \DIRECTORY_SEPARATOR) { |
| 1712 |
return "'".str_replace("'", "'\\''", $argument)."'"; |
| 1713 |
} |
| 1714 |
if ('' === $argument = (string) $argument) { |
| 1715 |
return '""'; |
| 1716 |
} |
| 1717 |
if (false !== strpos($argument, "\0")) { |
| 1718 |
$argument = str_replace("\0", '?', $argument); |
| 1719 |
} |
| 1720 |
if (!preg_match('/[\/()%!^"<>&|\s]/', $argument)) { |
| 1721 |
return $argument; |
| 1722 |
} |
| 1723 |
$argument = preg_replace('/(\\\\+)$/', '$1$1', $argument); |
| 1724 |
|
| 1725 |
return '"'.str_replace(['"', '^', '%', '!', "\n"], ['""', '"^^"', '"^%"', '"^!"', '!LF!'], $argument).'"'; |
| 1726 |
} |
| 1727 |
|
| 1728 |
private function getDefaultEnv() |
| 1729 |
{ |
| 1730 |
$env = []; |
| 1731 |
|
| 1732 |
foreach ($_SERVER as $k => $v) { |
| 1733 |
if (\is_string($v) && false !== $v = getenv($k)) { |
| 1734 |
$env[$k] = $v; |
| 1735 |
} |
| 1736 |
} |
| 1737 |
|
| 1738 |
foreach ($_ENV as $k => $v) { |
| 1739 |
if (\is_string($v)) { |
| 1740 |
$env[$k] = $v; |
| 1741 |
} |
| 1742 |
} |
| 1743 |
|
| 1744 |
return $env; |
| 1745 |
} |
| 1746 |
} |
| 1747 |
|
