/**
* Reads content from system crontab of the current user.
* @throws AccessDeniedException if access to crontab is denied.
* @return string
*/
public function read()
{
$result = $this->shell->execute($this->getCronCommand() . ' -l');
if ($this->shell->isFailed()) {
throw new AccessDeniedException($result, $this->shell->getErrorCode());
}
return $this->shell->getOutput();
}
/**
* Writes the given content to the system crontab of the current user.
*
* @param array $lines
* @throws AccessDeniedException if access to crontab is denied.
* @throws WriteException if the temp path is not writable.
*/
public function write(array $lines)
{
// Reindex content array to ensure numeric indexes.
$lines = array_values($lines);
if (($lineCount = count($lines)) > 0) {
// Add a new line to last line to prevent the error:
// "new crontab file is missing newline before EOF, can't install.".
$lines[$lineCount - 1] = rtrim($lines[$lineCount - 1]) . PHP_EOL;
$tmpFile = $this->config['tmpPath'] . DIRECTORY_SEPARATOR . uniqid() . '.cron.import';
if (!is_writable($this->config['tmpPath'])) {
throw new WriteException('Temp path "' . $this->config['tmpPath'] . '" is not writable.');
}
// Write lines to file.
file_put_contents($tmpFile, implode(PHP_EOL, (array) $lines));
$result = $this->shell->execute($this->getCronCommand() . ' ' . $tmpFile);
unlink($tmpFile);
} else {
// If no lines should be added to crontab, clear crontab for current user.
$result = $this->shell->execute($this->getCronCommand() . ' -r');
}
if ($this->shell->isFailed()) {
throw new AccessDeniedException($result, $this->shell->getErrorCode());
}
}