/**
* InitializeWork
*
* Creates a unique work directory for this run.
*
* @return 0 on success
* 1 If base temp path isn't a directory
* 2 If it was unable to create a temp directory
* 3 base temp directory could not be created
*/
function InitializeWork()
{
// Make sure the temp dir exists
$sTmpPath = Config::GetPath("tmp");
if (!file_exists($sTmpPath)) {
if (mkdir($sTmpPath) === FALSE) {
return 3;
}
}
// Can we use the tmp dir?
if (!is_dir($sTmpPath)) {
print "Cannot access " . $sTmpPath;
return 1;
}
// We have to make SURE that we can share this directory with
// the other parts of the system (such as web and/or script)
chmod($sTmpPath, 0777);
// Randomly create a new directory name
$i = 0;
$bSuccess = false;
do {
$sRandom = "/" . md5(time() . mt_rand() . $i);
if (!file_exists($sTmpPath . $sRandom)) {
if (mkdir($sTmpPath . $sRandom) === FALSE) {
// Hmm, unable to create the dir, someone beat us to it?
$i++;
} else {
$bSuccess = true;
}
} else {
// Already exists, try another one
$i++;
}
} while ($i < 1000 && !$bSuccess);
if ($bSuccess) {
// Store the new tmp path
$sTmpPath .= $sRandom;
} else {
// In the unlikely situation that we kept colliding with other
return 2;
}
Config::SetPath("tmp", $sTmpPath);
return 0;
}
