function fs_systest_session()
{
require_once FS_ABS_PATH . '/php/session.php';
global $FS_SESSION;
unset($FS_SESSION);
$errors = array();
$res = fs_initialize_session_dir(true);
if ($res !== true) {
$errors[] = fs_systest_error("fatal", sprintf("Error initializing session directory: %s", $res));
} else {
$ok = fs_session_start(null, true);
if ($ok !== true) {
$errors[] = fs_systest_error("fatal", "Error creating test session");
} else {
global $FS_SESSION;
$sid = $FS_SESSION['sid'];
unset($GLOBALS['FS_SESSION']);
$ok = fs_session_start($sid, true);
if ($ok !== true) {
$errors[] = fs_systest_error("fatal", "Error restoring session : {$ok}");
}
}
}
return $errors;
}
/**
* Garbage collect stale session.
* this is called automatically and perform its operation at most every GC_INTERVAL_SECONDS.
*/
function fs_session_gc()
{
$session_initialized = fs_initialize_session_dir(true);
if ($session_initialized !== true) {
return $session_initialized;
}
$last_gc = 0;
$dir = $GLOBALS['FS_TEMP_DIR'];
$fname = "{$dir}/last_gc";
if (file_exists($fname)) {
$f = file($fname);
if (isset($f[0]) && is_numeric($f[0])) {
$last_gc = (int) $f[0];
}
}
if (time() - $last_gc > GC_INTERVAL_SECONDS) {
//echo "running gc</br>";
$dh = opendir($dir);
while (false !== ($filename = readdir($dh))) {
if ($filename != 'last_gc' && $filename != '.' && $filename != '..') {
$rotten = false;
$fn = "{$dir}/{$filename}";
$fd = @fopen($fn, "r");
if ($fd == false) {
if (FS_SESSION_DEBUG) {
echo "Error opening {$fn}<br/>";
}
// error opening the file, assume invalid and (try to) gc it.
$rotten = true;
} else {
$str = fgets($fd);
fclose($fd);
if ($str == false) {
// error reading the file, assume invalid and gc it.
$rotten = true;
} else {
$session = @unserialize($str);
if ($session != false) {
$accessed = (int) $session['accessed'];
//echo "elapsed " . (time() - $accessed) . "<br/>";
$rotten = time() - $accessed >= SESSION_TIMEOUT;
} else {
if (FS_SESSION_DEBUG) {
echo "Error unserialzing {$fn}<br/>";
}
// bad file.
$rotten = true;
}
}
}
if ($rotten) {
if (FS_SESSION_DEBUG) {
echo "Session GC: unlinking {$filename}</br>";
}
if (!@unlink($fn)) {
if (FS_SESSION_DEBUG) {
echo "Error unlinking {$fn}<br/>";
}
}
}
}
}
if (fs_is_writable_and_readable($fname)) {
$fd = fopen($fname, "w+");
fputs($fd, time());
fclose($fd);
} else {
return "{$fname} is not writeable by PHP user";
}
}
}
