/**
* Create a tar archive.
* @param $targetPath string
* @param $targetFile string
* @param $sourceFiles array
*/
function tarFiles($targetPath, $targetFile, $sourceFiles)
{
assert($this->_checkedForTar);
// GZip compressed result file.
$tarCommand = Config::getVar('cli', 'tar');
// Cygwin compatibility.
$cygwin = Config::getVar('cli', 'cygwin');
if (is_executable($cygwin)) {
$targetPath = cygwinConversion($targetPath);
$targetFile = cygwinConversion($targetFile);
}
$tarCommand .= ' -czf ' . escapeshellarg($targetFile);
if (!Core::isWindows()) {
// Do not reveal our webserver user by forcing root as owner.
$tarCommand .= ' --owner 0 --group 0';
}
// Do not reveal our internal export path by exporting only relative filenames.
$tarCommand .= ' -C ' . escapeshellarg($targetPath) . ' --';
// Add each file individually so that other files in the directory
// will not be included.
$dirSep = $cygwin ? '/' : DIRECTORY_SEPARATOR;
foreach ($sourceFiles as $sourceFile) {
if ($cygwin) {
$sourceFile = cygwinConversion($sourceFile);
}
assert(dirname($sourceFile) . $dirSep === $targetPath);
if (dirname($sourceFile) . $dirSep !== $targetPath) {
continue;
}
$tarCommand .= ' ' . escapeshellarg(basename($sourceFile));
}
// Execute the command.
if ($cygwin) {
$tarCommand = $cygwin . " --login -c '" . $tarCommand . "'";
}
exec($tarCommand, $dummy, $returnStatus);
assert($returnStatus === 0);
}
/**
* Recursively unpack the given tar file
* and return its contents as an array.
* @param $tarFile string
* @return array
*/
protected function extractTarFile($tarFile)
{
$tarBinary = Config::getVar('cli', 'tar');
// Cygwin compat.
$cygwin = Config::getVar('cli', 'cygwin');
// Make sure we got the tar binary installed.
self::assertTrue(!empty($tarBinary) && is_executable($tarBinary) || is_executable($cygwin), 'tar must be installed');
// Create a temporary directory.
do {
$tempdir = sys_get_temp_dir() . DIRECTORY_SEPARATOR . md5(time() . mt_rand());
} while (file_exists($tempdir));
$fileManager = new FileManager();
$fileManager->mkdir($tempdir);
// Extract the tar to the temporary directory.
if ($cygwin) {
$tarCommand = $cygwin . " --login -c '" . $tarBinary . ' -C ' . escapeshellarg(cygwinConversion($tempdir)) . ' -xzf ' . escapeshellarg(cygwinConversion($tarFile)) . "'";
} else {
$tarCommand = $tarBinary . ' -C ' . escapeshellarg($tempdir) . ' -xzf ' . escapeshellarg($tarFile);
}
exec($tarCommand);
// Read the results into an array.
$result = array();
foreach (glob($tempdir . DIRECTORY_SEPARATOR . '*.{tar.gz,xml}', GLOB_BRACE) as $extractedFile) {
if (substr($extractedFile, -4) == '.xml') {
// Read the XML file into the result array.
$result[basename($extractedFile)] = file_get_contents($extractedFile);
} else {
// Recursively extract tar files.
$result[basename($extractedFile)] = $this->extractTarFile($extractedFile);
}
unlink($extractedFile);
}
rmdir($tempdir);
ksort($result);
return $result;
}