/**
* Called via pluginfile.php -> question_pluginfile to serve files belonging to
* a question in a question_attempt when that attempt is a quiz attempt.
*
* @package mod_quiz
* @category files
* @param stdClass $course course settings object
* @param stdClass $context context object
* @param string $component the name of the component we are serving files for.
* @param string $filearea the name of the file area.
* @param int $qubaid the attempt usage id.
* @param int $slot the id of a question in this quiz attempt.
* @param array $args the remaining bits of the file path.
* @param bool $forcedownload whether the user must be forced to download the file.
* @param array $options additional options affecting the file serving
* @return bool false if file not found, does not return if found - justsend the file
*/
function quiz_question_pluginfile($course, $context, $component,
$filearea, $qubaid, $slot, $args, $forcedownload, array $options=array()) {
global $CFG;
require_once($CFG->dirroot . '/mod/quiz/locallib.php');
$attemptobj = quiz_attempt::create_from_usage_id($qubaid);
require_login($attemptobj->get_course(), false, $attemptobj->get_cm());
if ($attemptobj->is_own_attempt() && !$attemptobj->is_finished()) {
// In the middle of an attempt.
if (!$attemptobj->is_preview_user()) {
$attemptobj->require_capability('mod/quiz:attempt');
}
$isreviewing = false;
} else {
// Reviewing an attempt.
$attemptobj->check_review_capability();
$isreviewing = true;
}
if (!$attemptobj->check_file_access($slot, $isreviewing, $context->id,
$component, $filearea, $args, $forcedownload)) {
send_file_not_found();
}
$fs = get_file_storage();
$relativepath = implode('/', $args);
$fullpath = "/$context->id/$component/$filearea/$relativepath";
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
send_file_not_found();
}
send_stored_file($file, 0, 0, $forcedownload, $options);
}
