/**
* Send a command, logging error output to the filesystem
*
* The output of the commands will be send to the logger.
*
* @param string $cmd
* @param int $timeout
* @param string[] $allowed_errors Convert these errors to notices
* @return bool True if the command completes without error
*/
protected function sendCommand($cmd, $timeout = 15, array $allowed_errors = [])
{
$this->logger->debug("Execute: " . $cmd);
$log_file = $this->log_prefix . '-' . self::$log_index++ . '.error.log';
$output = $this->shell->sendSmartCommand($cmd . ' 2> ' . $log_file, false, $timeout, true);
$errors = trim($this->shell->sendSmartCommand('cat ' . $log_file, true, 3, true));
$this->output($output);
if ($errors) {
$false_positive = false;
foreach ($allowed_errors as $allowed_error) {
if (substr($errors, 0, strlen($allowed_error)) == $allowed_error) {
$false_positive = true;
break;
}
}
if ($false_positive) {
// Acceptable errors
$this->logger->notice($errors);
return true;
} else {
// Unacceptable errors
$this->logger->debug("Command returned errors:");
$this->error($errors);
return false;
}
} else {
// No errors
return true;
}
}
/**
* Send and log a smart command
*
* @param string $cmd
* @param int $timeout
*/
public function sendCommand($cmd, $timeout = 15)
{
if (substr($this->output, -1) !== "\n") {
$this->addLog("\n");
}
$this->addLog($this->getPrompt() . $cmd . "\n");
$this->addLog($this->shell->sendSmartCommand($cmd, true, $timeout, true));
}
/**
* Zero out a remote file and then delete it
*
* @param string $fn
*/
protected function secureDeleteFile($fn)
{
$this->shell->sendSmartCommand('dd if=/dev/zero of="' . $fn . '" count=1 bs=`wc -c < "' . $fn . '"`', true, self::CMD_TIMEOUT, true);
$this->shell->sendSmartCommand('rm -f "' . $fn . '"', true, self::CMD_TIMEOUT, true);
}