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portfoliofile.php
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portfoliofile.php
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<?php
// This file is part of Exabis Eportfolio (extension for Moodle)
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
// (c) 2016 GTN - Global Training Network GmbH <[email protected]>.
require_once(__DIR__.'/inc.php');
// Syntax:
// Files in the portfolio:
// portfoliofile.php/files/$userid/$portfolioid/filename.ext
// Exported SCORM-File (user has to be logged in)
// portfoliofile.php/temp/export/$userid/filename.ext.
$token = optional_param('token', null, PARAM_RAW);
$wstoken = optional_param('token', null, PARAM_RAW);
if (!$token || !$wstoken) {
// Automatisches einloggen beim öffnen mit token (vom webservice) verhindern.
@define('NO_MOODLE_COOKIES', true);
}
require_once($CFG->dirroot.'/webservice/lib.php');
if (empty($CFG->filelifetime)) {
$lifetime = 86400; // Seconds for files to remain in caches.
} else {
$lifetime = $CFG->filelifetime;
}
// needed, because diggr-plus is loading files via xhr
header("Access-Control-Allow-Origin: *");
// The check of the parameter to PARAM_PATH is executed inside get_file_argument.
$relativepath = get_file_argument('portfoliofile.php');
$access = optional_param('access', 0, PARAM_TEXT);
$itemid = optional_param('itemid', 0, PARAM_INT);
$inst = optional_param('inst', 0, PARAM_ALPHANUM);
$userhash = optional_param('hv', 0, PARAM_ALPHANUM);
// Old elove token - moodle sometimes uses wstoken, sometimes token.
$token = optional_param('token', null, PARAM_ALPHANUM);
// New token.
$wstoken = optional_param('wstoken', $token, PARAM_ALPHANUM);
$download = optional_param('download', true, PARAM_BOOL);
// Block_exaport_epop_checkhash.
$epopaccess = false;
// Authenticate the user.
if ($token) {
// Keep code for eLove - needed for teacher access to submitted files.
$webservicelib = new webservice();
$authenticationinfo = $webservicelib->authenticate_user($token);
$accesspath = explode('/', $access);
if (strpos($accesspath[2], '-')) {
$accesspath[2] = (explode('-', $accesspath[2])[0]);
}
$item = block_exaport_get_item_for_webservice($itemid, $accesspath[2], $authenticationinfo['user']->id);
if (!$item) {
print_error("viewnotfound", "block_exaport");
}
if ($file = block_exaport_get_item_single_file($item)) {
send_stored_file($file);
} else {
not_found();
}
exit;
}
$authenticationinfo = null;
if ($wstoken) {
$webservicelib = new webservice();
$authenticationinfo = $webservicelib->authenticate_user($wstoken);
} else if ($userhash) {
$user = block_exaport_epop_checkhash($userhash);
if ($user == false) {
require_login();
} else {
$epopaccess = true;
}
} else {
require_login();
}
if ($itemid) {
// File storage logic.
if ($epopaccess) {
$item = block_exaport_get_item_epop($itemid, $user);
} else if ($access) {
$item = block_exaport_get_item($itemid, $access, false);
} else if (($userid = optional_param('userid', 0, PARAM_INT)) && $authenticationinfo) {
$item = block_exaport_get_item_for_webservice($itemid, $userid, $authenticationinfo['user']->id);
}
if (!$item) {
print_error('Item not found');
}
if ($commentid = optional_param('commentid', 0, PARAM_INT)) {
$comment = $DB->get_record("block_exaportitemcomm", ['itemid' => $item->id, 'id' => $commentid]);
if (!$comment) {
not_found();
}
$file = block_exaport_get_item_comment_file($comment->id);
} else {
$files = block_exaport_get_item_files_array($item);
if ($inst && !empty($files[$inst])) {
$file = $files[$inst];
} else {
// fallback: always get first file
$file = reset($files);
}
}
if ($file) {
// TODO: check this code
$mimetype = $file->get_mimetype();
if (strpos($mimetype, 'html') !== false || strpos($mimetype, 'text') === true) { // clean HTML ; TODO: 'text' - do we need?
$tempfilecontent = $file->get_content();
$tempfilecontent = clean_text($tempfilecontent, FORMAT_HTML, ['newlines' => false]);
readstring_accel($tempfilecontent, $mimetype, false);
die;
}
$as_pdf = optional_param('as_pdf', false, PARAM_BOOL);
if ($as_pdf && class_exists('\block_exacomp\api')) {
\block_exacomp\api::send_stored_file_as_pdf($file, $download);
}
send_stored_file($file, null, 0, $download);
} else {
not_found();
}
} else {
// Old logic? still used?
if (!$relativepath) {
error('No valid arguments supplied or incorrect server configuration');
} else {
if ($relativepath[0] != '/') {
error('No valid arguments supplied, path does not start with slash!');
}
}
// Relative path must start with '/', because of backup/restore!!!
// Extract relative path components.
$args = explode('/', trim($relativepath, '/'));
if ($args[0] != 'exaport') {
error('No valid arguments supplied');
}
if ($args[1] == 'temp') {
if ($args[2] == 'export') {
$args[3] = $accessuserid = clean_param($args[3], PARAM_INT);
if ($accessuserid == $USER->id) {
$tempvar = 1; // For code checker;
// Check ok, allowed to access the file.
} else {
error('No valid arguments supplied');
}
} else {
error('No valid arguments supplied');
}
} else if ($args[1] == 'files') {
// In this case the user tries to access a file of a portfolio entry.
// portfoliofile.php/files/$userid/$portfolioid/filename.ext.
if (isset($args[2]) && isset($args[3])) {
$args[2] = $accessuserid = clean_param($args[2], PARAM_INT);
$args[3] = $accessportfolioid = clean_param($args[3], PARAM_INT);
if ($accessuserid == $USER->id) { // Check if this user has a portfolio with id $access_portfolio_id;.
if ($DB->count_records('block_exaportitem', array('userid' => $USER->id, 'id' => $accessportfolioid)) == 1) {
$tempvar = 1; // For code checker;
// Check ok, allowed to access the file.
} else {
error('No valid arguments supplied');
}
} else {
error('No valid arguments supplied');
}
} else {
error('No valid arguments supplied');
}
} else {
error('No valid arguments supplied');
}
$filepath = $CFG->dataroot.'/'.implode('/', $args);
}
if (!file_exists($filepath)) {
if (isset($course)) {
not_found($course->id);
} else {
not_found();
}
}
send_file($filepath, basename($filepath), $lifetime, $CFG->filteruploadedfiles, false, true);
function not_found($courseid = 0) {
global $CFG;
header('HTTP/1.0 404 not found');
// if ($courseid > 0) {
//error(get_string('filenotfound', 'error'), $CFG->wwwroot.'/course/view.php?id='.$courseid); // This is not displayed on IIS?
// } else {
// error(get_string('filenotfound', 'error')); // This is not displayed on IIS??
//}
print_error("filenotfound", "block_exaport");
}