$config = array();
if (!@(include_once dirname(__FILE__) . '/include/loadutils.php')) {
$err = 'Problem loading utility script';
}
if (!$err && !load_utils('auth', 'service')) {
$err = 'Problem loading utility scripts';
}
if (!$err) {
// pull in configuration so we can log other errors
$config = config_get();
$err = config_error($config);
$log_responses = $config['log_response'];
}
// autheticate the user (will exit if not possible)
if (!$err && !auth_ok()) {
auth_challenge($config);
}
if (!$err) {
// pull in other configuration and check for required input
if (!($php_input = file_get_contents('php://input'))) {
$err = 'JSON payload required';
} else {
if (!($request = @json_decode($php_input, TRUE))) {
$err = 'Could not parse JSON payload';
}
}
}
if (!$err) {
if ($config['log_request']) {
log_file(print_r($request, 1), $config);
}
function h_delete_homework()
{
global $uri, $user;
if (!$user) {
auth_challenge();
}
$p = HOMEWORK_DIR;
$fn = homework_get_uri_fn($uri);
if ($hw = homework_load($fn)) {
if (!(isset($hw->author) && $hw->author == $user->un)) {
header('HTTP/1.1 403 Forbidden');
header('Content-Type: text/plain');
print "You don't have permission to delete that.\n";
return;
}
if (req_header('if-match')) {
if (req_header('if-match') !== etag_file($p)) {
header('HTTP/1.1 412 Precondition Failed');
header('Content-Type: text/plain');
print "Entity tag mismatch.\n";
return;
}
}
$del = @unlink($p . $fn);
if (!$del) {
header('HTTP/1.1 500 Internal Server Error');
header('Content-Type: text/plain');
print "Could not delete.\n";
}
header('HTTP/1.1 200 OK');
header('Content-Type: text/plain');
print "Deleted.\n";
} else {
header('HTTP/1.1 404 Not Found');
header('Content-Type: text/plain');
print "File not found.\n";
}
}