/**
* Serves the resource files.
* @param object $course
* @param object $cminfo
* @param object $context
* @param string $filearea
* @param array $args
* @param bool $forcedownload
* @return bool false if file not found, does not return if found - justsend the file
*/
function resource_pluginfile($course, $cminfo, $context, $filearea, $args, $forcedownload)
{
global $CFG, $DB;
require_once "{$CFG->libdir}/resourcelib.php";
if (!$cminfo->uservisible) {
return false;
}
if ($filearea !== 'resource_content') {
// intro is handled automatically in pluginfile.php
return false;
}
if (!($cm = get_coursemodule_from_instance('resource', $cminfo->instance, $course->id))) {
return false;
}
require_course_login($course, true, $cm);
array_shift($args);
// ignore revision - designed to prevent caching problems only
$fs = get_file_storage();
$relativepath = '/' . implode('/', $args);
$fullpath = $context->id . $filearea . '0' . $relativepath;
if (!($file = $fs->get_file_by_hash(sha1($fullpath))) or $file->is_directory()) {
$resource = $DB->get_record('resource', array('id' => $cminfo->instance), 'id, legacyfiles', MUST_EXIST);
if ($resource->legacyfiles != RESOURCELIB_LEGACYFILES_ACTIVE) {
return false;
}
require_once "{$CFG->dirroot}/mod/resource/db/upgradelib.php";
if (!($file = resource_try_file_migration($relativepath, $cminfo->id, $cminfo->course, 'resource_content', 0))) {
return false;
}
// file migrate - update flag
$resource->legacyfileslast = time();
$DB->update_record('resource', $resource);
}
// should we apply filters?
$mimetype = $file->get_mimetype();
if ($mimetype = 'text/html' or $mimetype = 'text/plain') {
$filter = $DB->get_field('resource', 'filterfiles', array('id' => $cminfo->instance));
} else {
$filter = 0;
}
// finally send the file
send_stored_file($file, 86400, $filter, $forcedownload);
}
/**
* Migrate resource module data from 1.9 resource_old table to new resource table
* @return void
*/
function resource_20_migrate()
{
global $CFG, $DB;
require_once "{$CFG->libdir}/filelib.php";
require_once "{$CFG->libdir}/resourcelib.php";
require_once "{$CFG->dirroot}/course/lib.php";
$fs = get_file_storage();
$withrelativelinks = array('text/html', 'text/xml', 'application/xhtml+xml', 'application/x-shockwave-flash');
// note: pdf doc and other types may contain links too, but we do not support relative links there
if (!($candidates = $DB->get_recordset('resource_old', array('type' => 'file', 'migrated' => 0)))) {
return;
}
foreach ($candidates as $candidate) {
upgrade_set_timeout();
$path = $candidate->reference;
$siteid = get_site()->id;
$fs = get_file_storage();
if (strpos($path, 'LOCALPATH') === 0) {
// ignore not maintained local files - sorry
continue;
} else {
if (preg_match("|{$CFG->wwwroot}/file.php(\\?file=)?/{$siteid}(/[^\\s'\"&\\?#]+)|", $path, $matches)) {
// public site files
$path = $matches[2];
$resource = new object();
$resource->id = $candidate->oldid;
$resource->tobemigrated = 0;
$resource->mainfile = $path;
$resource->filterfiles = $CFG->filteruploadedfiles;
$resource->legacyfiles = RESOURCELIB_LEGACYFILES_NO;
// on-demand-migration not possible for site files, sorry
$context = get_context_instance(CONTEXT_MODULE, $candidate->cmid);
$sitecontext = get_context_instance(CONTEXT_COURSE, $siteid);
$file_record = array('contextid' => $context->id, 'filearea' => 'resource_content', 'itemid' => 0);
if ($file = $fs->get_file_by_hash(sha1($sitecontext->id . 'course_content0' . $path))) {
try {
$fs->create_file_from_storedfile($file_record, $file);
} catch (Exception $x) {
}
$resource->mainfile = $file->get_filepath() . $file->get_filename();
}
} else {
if (preg_match("|{$CFG->wwwroot}/file.php(\\?file=)?/{$candidate->course}(/[^\\s'\"&\\?#]+)|", $path, $matches)) {
// current course files
$path = $matches[2];
$resource = new object();
$resource->id = $candidate->oldid;
$resource->tobemigrated = 0;
$resource->mainfile = $path;
$resource->filterfiles = $CFG->filteruploadedfiles;
$mimetype = mimeinfo('type', $resource->mainfile);
if (in_array($mimetype, $withrelativelinks)) {
$resource->legacyfiles = RESOURCELIB_LEGACYFILES_ACTIVE;
} else {
$resource->legacyfiles = RESOURCELIB_LEGACYFILES_NO;
}
// try migration of main file - ignore if does not exist
if ($file = resource_try_file_migration($resource->mainfile, $candidate->cmid, $candidate->course, 'resource_content', 0)) {
$resource->mainfile = $file->get_filepath() . $file->get_filename();
}
} else {
if (strpos($path, '://') or strpos($path, '/') === 0) {
// http:// https:// ftp:// OR starts with slash - to be converted to link resource
continue;
} else {
// current course files
// cleanup old path first
$path = '/' . trim(trim($path), '/');
if (strpos($path, '?forcedownload=1') !== false) {
// eliminate old force download tricks
$candidate->options = 'forcedownload';
$path = str_replace('?forcedownload=1', '', $path);
}
// get rid of any extra url parameters, sorry we can not support these
preg_match("/^[^?#]+/", $path, $matches);
$parts = $matches[0];
$resource = new object();
$resource->id = $candidate->oldid;
$resource->tobemigrated = 0;
$resource->mainfile = $path;
$resource->filterfiles = $CFG->filteruploadedfiles;
$mimetype = mimeinfo('type', $resource->mainfile);
if (in_array($mimetype, $withrelativelinks)) {
$resource->legacyfiles = RESOURCELIB_LEGACYFILES_ACTIVE;
} else {
$resource->legacyfiles = RESOURCELIB_LEGACYFILES_NO;
}
// try migration of main file - ignore if does not exist
if ($file = resource_try_file_migration($resource->mainfile, $candidate->cmid, $candidate->course, 'resource_content', 0)) {
$resource->mainfile = $file->get_filepath() . $file->get_filename();
}
}
}
}
}
$options = array('printheading' => 0, 'printintro' => 1);
if ($candidate->options == 'frame') {
$resource->display = RESOURCELIB_DISPLAY_FRAME;
} else {
if ($candidate->options == 'objectframe') {
$resource->display = RESOURCELIB_DISPLAY_EMBED;
} else {
if ($candidate->options == 'forcedownload') {
$resource->display = RESOURCELIB_DISPLAY_DOWNLOAD;
} else {
if ($candidate->popup) {
$resource->display = RESOURCELIB_DISPLAY_POPUP;
if ($candidate->popup) {
$rawoptions = explode(',', $candidate->popup);
foreach ($rawoptions as $rawoption) {
list($name, $value) = explode('=', trim($rawoption), 2);
if ($value > 0 and ($name == 'width' or $name == 'height')) {
$options['popup' . $name] = $value;
continue;
}
}
}
} else {
$resource->display = RESOURCELIB_DISPLAY_AUTO;
}
}
}
}
$resource->displayoptions = serialize($options);
// update resource instance and mark as migrated
$DB->update_record('resource', $resource);
$candidate->newmodule = 'resource';
$candidate->newid = $candidate->oldid;
$candidate->migrated = time();
$DB->update_record('resource_old', $candidate);
}
$candidates->close();
// clear all course modinfo caches
rebuild_course_cache(0, true);
}
