/**
* Called by pluginfile.php to serve files related to the 'question' core
* component and for files belonging to qtypes.
*
* For files that relate to questions in a question_attempt, then we delegate to
* a function in the component that owns the attempt (for example in the quiz,
* or in core question preview) to get necessary inforation.
*
* (Note that, at the moment, all question file areas relate to questions in
* attempts, so the If at the start of the last paragraph is always true.)
*
* Does not return, either calls send_file_not_found(); or serves the file.
*
* @param object $course course settings object
* @param object $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 array $args the remaining bits of the file path.
* @param bool $forcedownload whether the user must be forced to download the file.
*/
function question_pluginfile($course, $context, $component, $filearea, $args, $forcedownload)
{
global $DB, $CFG;
list($context, $course, $cm) = get_context_info_array($context->id);
require_login($course, false, $cm);
if ($filearea === 'export') {
require_once $CFG->dirroot . '/question/editlib.php';
$contexts = new question_edit_contexts($context);
// check export capability
$contexts->require_one_edit_tab_cap('export');
$category_id = (int) array_shift($args);
$format = array_shift($args);
$cattofile = array_shift($args);
$contexttofile = array_shift($args);
$filename = array_shift($args);
// load parent class for import/export
require_once $CFG->dirroot . '/question/format.php';
require_once $CFG->dirroot . '/question/editlib.php';
require_once $CFG->dirroot . '/question/format/' . $format . '/format.php';
$classname = 'qformat_' . $format;
if (!class_exists($classname)) {
send_file_not_found();
}
$qformat = new $classname();
if (!($category = $DB->get_record('question_categories', array('id' => $category_id)))) {
send_file_not_found();
}
$qformat->setCategory($category);
$qformat->setContexts($contexts->having_one_edit_tab_cap('export'));
$qformat->setCourse($course);
if ($cattofile == 'withcategories') {
$qformat->setCattofile(true);
} else {
$qformat->setCattofile(false);
}
if ($contexttofile == 'withcontexts') {
$qformat->setContexttofile(true);
} else {
$qformat->setContexttofile(false);
}
if (!$qformat->exportpreprocess()) {
send_file_not_found();
print_error('exporterror', 'question', $thispageurl->out());
}
// export data to moodle file pool
if (!($content = $qformat->exportprocess(true))) {
send_file_not_found();
}
//DEBUG
//echo '<textarea cols=90 rows=20>';
//echo $content;
//echo '</textarea>';
//die;
send_file($content, $filename, 0, 0, true, true, $qformat->mime_type());
}
$attemptid = (int) array_shift($args);
$questionid = (int) array_shift($args);
if ($attemptid === 0) {
// preview
require_once $CFG->dirroot . '/question/previewlib.php';
return question_preview_question_pluginfile($course, $context, $component, $filearea, $attemptid, $questionid, $args, $forcedownload);
} else {
$module = $DB->get_field('question_attempts', 'modulename', array('id' => $attemptid));
$dir = get_component_directory($module);
if (!file_exists("{$dir}/lib.php")) {
send_file_not_found();
}
include_once "{$dir}/lib.php";
$filefunction = $module . '_question_pluginfile';
if (!function_exists($filefunction)) {
send_file_not_found();
}
$filefunction($course, $context, $component, $filearea, $attemptid, $questionid, $args, $forcedownload);
send_file_not_found();
}
}
/**
* Called by pluginfile.php to serve files related to the 'question' core
* component and for files belonging to qtypes.
*
* For files that relate to questions in a question_attempt, then we delegate to
* a function in the component that owns the attempt (for example in the quiz,
* or in core question preview) to get necessary inforation.
*
* (Note that, at the moment, all question file areas relate to questions in
* attempts, so the If at the start of the last paragraph is always true.)
*
* Does not return, either calls send_file_not_found(); or serves the file.
*
* @package core_question
* @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 array $args the remaining bits of the file path.
* @param bool $forcedownload whether the user must be forced to download the file.
* @param array $options additional options affecting the file serving
*/
function question_pluginfile($course, $context, $component, $filearea, $args, $forcedownload, array $options = array())
{
global $DB, $CFG;
// Special case, sending a question bank export.
if ($filearea === 'export') {
list($context, $course, $cm) = get_context_info_array($context->id);
require_login($course, false, $cm);
require_once $CFG->dirroot . '/question/editlib.php';
$contexts = new question_edit_contexts($context);
// check export capability
$contexts->require_one_edit_tab_cap('export');
$category_id = (int) array_shift($args);
$format = array_shift($args);
$cattofile = array_shift($args);
$contexttofile = array_shift($args);
$filename = array_shift($args);
// load parent class for import/export
require_once $CFG->dirroot . '/question/format.php';
require_once $CFG->dirroot . '/question/editlib.php';
require_once $CFG->dirroot . '/question/format/' . $format . '/format.php';
$classname = 'qformat_' . $format;
if (!class_exists($classname)) {
send_file_not_found();
}
$qformat = new $classname();
if (!($category = $DB->get_record('question_categories', array('id' => $category_id)))) {
send_file_not_found();
}
$qformat->setCategory($category);
$qformat->setContexts($contexts->having_one_edit_tab_cap('export'));
$qformat->setCourse($course);
if ($cattofile == 'withcategories') {
$qformat->setCattofile(true);
} else {
$qformat->setCattofile(false);
}
if ($contexttofile == 'withcontexts') {
$qformat->setContexttofile(true);
} else {
$qformat->setContexttofile(false);
}
if (!$qformat->exportpreprocess()) {
send_file_not_found();
print_error('exporterror', 'question', $thispageurl->out());
}
// export data to moodle file pool
if (!($content = $qformat->exportprocess(true))) {
send_file_not_found();
}
send_file($content, $filename, 0, 0, true, true, $qformat->mime_type());
}
// Normal case, a file belonging to a question.
$qubaidorpreview = array_shift($args);
// Two sub-cases: 1. A question being previewed outside an attempt/usage.
if ($qubaidorpreview === 'preview') {
$previewcontextid = (int) array_shift($args);
$previewcomponent = array_shift($args);
$questionid = (int) array_shift($args);
$previewcontext = context_helper::instance_by_id($previewcontextid);
$result = component_callback($previewcomponent, 'question_preview_pluginfile', array($previewcontext, $questionid, $context, $component, $filearea, $args, $forcedownload, $options), 'newcallbackmissing');
if ($result === 'newcallbackmissing' && ($filearea = 'questiontext')) {
// Fall back to the legacy callback for backwards compatibility.
debugging("Component {$previewcomponent} does not define the expected " . "{$previewcomponent}_question_preview_pluginfile callback. Falling back to the deprecated " . "{$previewcomponent}_questiontext_preview_pluginfile callback.", DEBUG_DEVELOPER);
component_callback($previewcomponent, 'questiontext_preview_pluginfile', array($previewcontext, $questionid, $args, $forcedownload, $options));
}
send_file_not_found();
}
// 2. A question being attempted in the normal way.
$qubaid = (int) $qubaidorpreview;
$slot = (int) array_shift($args);
$module = $DB->get_field('question_usages', 'component', array('id' => $qubaid));
if ($module === 'core_question_preview') {
require_once $CFG->dirroot . '/question/previewlib.php';
return question_preview_question_pluginfile($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
} else {
$dir = core_component::get_component_directory($module);
if (!file_exists("{$dir}/lib.php")) {
send_file_not_found();
}
include_once "{$dir}/lib.php";
$filefunction = $module . '_question_pluginfile';
if (function_exists($filefunction)) {
$filefunction($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
}
// Okay, we're here so lets check for function without 'mod_'.
if (strpos($module, 'mod_') === 0) {
$filefunctionold = substr($module, 4) . '_question_pluginfile';
if (function_exists($filefunctionold)) {
$filefunctionold($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
}
}
send_file_not_found();
}
}
/**
* Called by pluginfile.php to serve files related to the 'question' core
* component and for files belonging to qtypes.
*
* For files that relate to questions in a question_attempt, then we delegate to
* a function in the component that owns the attempt (for example in the quiz,
* or in core question preview) to get necessary inforation.
*
* (Note that, at the moment, all question file areas relate to questions in
* attempts, so the If at the start of the last paragraph is always true.)
*
* Does not return, either calls send_file_not_found(); or serves the file.
*
* @package core_question
* @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 array $args the remaining bits of the file path.
* @param bool $forcedownload whether the user must be forced to download the file.
* @param array $options additional options affecting the file serving
*/
function question_pluginfile($course, $context, $component, $filearea, $args, $forcedownload, array $options = array())
{
global $DB, $CFG;
if ($filearea === 'questiontext_preview') {
$component = array_shift($args);
$questionid = array_shift($args);
component_callback($component, 'questiontext_preview_pluginfile', array($context, $questionid, $args, $forcedownload, $options));
send_file_not_found();
}
if ($filearea === 'export') {
list($context, $course, $cm) = get_context_info_array($context->id);
require_login($course, false, $cm);
require_once $CFG->dirroot . '/question/editlib.php';
$contexts = new question_edit_contexts($context);
// check export capability
$contexts->require_one_edit_tab_cap('export');
$category_id = (int) array_shift($args);
$format = array_shift($args);
$cattofile = array_shift($args);
$contexttofile = array_shift($args);
$filename = array_shift($args);
// load parent class for import/export
require_once $CFG->dirroot . '/question/format.php';
require_once $CFG->dirroot . '/question/editlib.php';
require_once $CFG->dirroot . '/question/format/' . $format . '/format.php';
$classname = 'qformat_' . $format;
if (!class_exists($classname)) {
send_file_not_found();
}
$qformat = new $classname();
if (!($category = $DB->get_record('question_categories', array('id' => $category_id)))) {
send_file_not_found();
}
$qformat->setCategory($category);
$qformat->setContexts($contexts->having_one_edit_tab_cap('export'));
$qformat->setCourse($course);
if ($cattofile == 'withcategories') {
$qformat->setCattofile(true);
} else {
$qformat->setCattofile(false);
}
if ($contexttofile == 'withcontexts') {
$qformat->setContexttofile(true);
} else {
$qformat->setContexttofile(false);
}
if (!$qformat->exportpreprocess()) {
send_file_not_found();
print_error('exporterror', 'question', $thispageurl->out());
}
// export data to moodle file pool
if (!($content = $qformat->exportprocess(true))) {
send_file_not_found();
}
send_file($content, $filename, 0, 0, true, true, $qformat->mime_type());
}
$qubaid = (int) array_shift($args);
$slot = (int) array_shift($args);
$module = $DB->get_field('question_usages', 'component', array('id' => $qubaid));
if ($module === 'core_question_preview') {
require_once $CFG->dirroot . '/question/previewlib.php';
return question_preview_question_pluginfile($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
} else {
$dir = get_component_directory($module);
if (!file_exists("{$dir}/lib.php")) {
send_file_not_found();
}
include_once "{$dir}/lib.php";
$filefunction = $module . '_question_pluginfile';
if (function_exists($filefunction)) {
$filefunction($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
}
// Okay, we're here so lets check for function without 'mod_'.
if (strpos($module, 'mod_') === 0) {
$filefunctionold = substr($module, 4) . '_question_pluginfile';
if (function_exists($filefunctionold)) {
$filefunctionold($course, $context, $component, $filearea, $qubaid, $slot, $args, $forcedownload, $options);
}
}
send_file_not_found();
}
}
