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- <?php
- /* For licensing terms, see /license.txt */
- /*
- * PREVENT RESUBMITING
- * This part checks if the $dropbox_unid var has the same ID
- * as the session var $dropbox_uniqueid that was registered as a session
- * var before.
- * The resubmit prevention only works with GET requests, because it gives some annoying
- * behaviours with POST requests.
- */
- /**
- * FORM SUBMIT
- * - VALIDATE POSTED DATA
- * - UPLOAD NEW FILE
- */
- if (isset($_POST['submitWork'])) {
- require_once api_get_path(LIBRARY_PATH) . 'fileUpload.lib.php';
- $error = false;
- $errormsg = '';
- /**
- * FORM SUBMIT : VALIDATE POSTED DATA
- */
- // the author or description field is empty
- if (!isset($_POST['authors']) || !isset( $_POST['description'])) {
- $error = true;
- $errormsg = get_lang('BadFormData');
- } elseif (!isset( $_POST['recipients']) || count( $_POST['recipients']) <= 0) {
- $error = true;
- $errormsg = get_lang('NoUserSelected');
- } else {
- $thisIsAMailing = false;
- $thisIsJustUpload = false;
- foreach ($_POST['recipients'] as $rec) {
- if ($rec == 'mailing') {
- $thisIsAMailing = true;
- } elseif ($rec == 'upload') {
- $thisIsJustUpload = true;
- } elseif (strpos($rec, 'user_') === 0 && !isCourseMember(substr($rec, strlen('user_')))) {
- echo '401';
- die(get_lang('BadFormData').' (code 401)');
- } elseif (strpos($rec, 'group_') !== 0 && strpos($rec, 'user_') !== 0) {
- echo '402';
- die(get_lang('BadFormData').' (code 402)');
- }
- }
- // we are doing a mailing but an additional recipient is selected
- if ($thisIsAMailing && ( count($_POST['recipients']) != 1)) {
- $error = true;
- $errormsg = get_lang('MailingSelectNoOther');
- }
- // we are doing a just upload but an additional recipient is selected.
- elseif ( $thisIsJustUpload && ( count($_POST['recipients']) != 1)) {
- $error = true;
- $errormsg = get_lang('MailingJustUploadSelectNoOther');
- } elseif (empty($_FILES['file']['name'])) {
- $error = true;
- $errormsg = get_lang('NoFileSpecified');
- }
- }
- //check if $_POST['cb_overwrite'] is true or false
- $dropbox_overwrite = false;
- if (isset($_POST['cb_overwrite']) && $_POST['cb_overwrite']) {
- $dropbox_overwrite = true;
- }
- /**
- * FORM SUBMIT : UPLOAD NEW FILE
- */
- if (!$error) {
- $dropbox_filename = $_FILES['file']['name'];
- $dropbox_filesize = $_FILES['file']['size'];
- $dropbox_filetype = $_FILES['file']['type'];
- $dropbox_filetmpname = $_FILES['file']['tmp_name'];
- if ($dropbox_filesize <= 0 || $dropbox_filesize > dropbox_cnf('maxFilesize')) {
- $errormsg = get_lang('TooBig'); // TODO: The "too big" message does not fit in the case of uploading zero-sized file.
- $error = true;
- } elseif (!is_uploaded_file($dropbox_filetmpname)) { // check user fraud : no clean error msg.
- die(get_lang('BadFormData').' (code 403)');
- }
- if (!$error) {
- // Try to add an extension to the file if it hasn't got one
- $dropbox_filename = add_ext_on_mime($dropbox_filename, $dropbox_filetype);
- // Replace dangerous characters
- $dropbox_filename = replace_dangerous_char($dropbox_filename);
- // Transform any .php file in .phps fo security
- $dropbox_filename = php2phps($dropbox_filename);
- if (!filter_extension($dropbox_filename)) {
- $error = true;
- $errormsg = get_lang('UplUnableToSaveFileFilteredExtension');
- } else {
- // set title
- $dropbox_title = $dropbox_filename;
- // set author
- if ($_POST['authors'] == '') {
- $_POST['authors'] = getUserNameFromId($_user['user_id']);
- }
- if ($dropbox_overwrite) {
- $dropbox_person = new Dropbox_Person($_user['user_id'], $is_courseAdmin, $is_courseTutor);
- foreach ($dropbox_person->sentWork as $w) {
- if ($w->title == $dropbox_filename) {
- if (($w->recipients[0]['id'] > dropbox_cnf('mailingIdBase')) xor $thisIsAMailing) {
- $error = true;
- $errormsg = get_lang('MailingNonMailingError');
- }
- if (($w->recipients[0]['id'] == $_user['user_id']) xor $thisIsJustUpload) {
- $error = true;
- $errormsg = get_lang('MailingJustUploadSelectNoOther');
- }
- $dropbox_filename = $w->filename;
- $found = true;
- break;
- }
- }
- } else {
- // rename file to login_filename_uniqueId format
- $dropbox_filename = getLoginFromId( $_user['user_id']) . '_' . $dropbox_filename . '_'.uniqid('');
- }
- if (!is_dir(dropbox_cnf('sysPath'))) {
- //The dropbox subdir doesn't exist yet so make it and create the .htaccess file
- mkdir(dropbox_cnf('sysPath'), api_get_permissions_for_new_directories()) or die(get_lang('ErrorCreatingDir').' (code 404)');
- $fp = fopen(dropbox_cnf('sysPath').'/.htaccess', 'w') or die(get_lang('ErrorCreatingDir').' (code 405)');
- fwrite($fp, "AuthName AllowLocalAccess
- AuthType Basic
- order deny,allow
- deny from all
- php_flag zlib.output_compression off") or die(get_lang('ErrorCreatingDir').' (code 406)');
- }
- if ($error) {
- } elseif ($thisIsAMailing) {
- if (preg_match(dropbox_cnf('mailingZipRegexp'), $dropbox_title)) {
- $newWorkRecipients = dropbox_cnf('mailingIdBase');
- } else {
- $error = true;
- $errormsg = $dropbox_title . ': ' . get_lang('MailingWrongZipfile');
- }
- } elseif ($thisIsJustUpload) {
- $newWorkRecipients = array();
- } else {
- // Creating the array that contains all the users who will receive the file
- $newWorkRecipients = array();
- foreach ($_POST['recipients'] as $rec) {
- if (strpos($rec, 'user_') === 0) {
- $newWorkRecipients[] = substr($rec, strlen('user_'));
- } elseif (strpos($rec, 'group_') === 0) {
- $userList = GroupManager::get_subscribed_users(substr($rec, strlen('group_')));
- foreach ($userList as $usr) {
- if (!in_array($usr['user_id'], $newWorkRecipients) && $usr['user_id'] != $_user['user_id']) {
- $newWorkRecipients[] = $usr['user_id'];
- }
- }
- }
- }
- }
- // After uploading the file, create the db entries
- if (!$error) {
- @move_uploaded_file($dropbox_filetmpname, dropbox_cnf('sysPath') . '/' . $dropbox_filename)
- or die(get_lang('UploadError').' (code 407)');
- new Dropbox_SentWork($_user['user_id'], $dropbox_title, $_POST['description'], strip_tags($_POST['authors']), $dropbox_filename, $dropbox_filesize, $newWorkRecipients);
- }
- }
- }
- } //end if(!$error)
- /**
- * SUBMIT FORM RESULTMESSAGE
- */
- if (!$error) {
- $return_message = get_lang('FileUploadSucces');
- } else {
- $return_message = $errormsg;
- }
- }
- /**
- * DELETE RECEIVED OR SENT FILES - EDIT FEEDBACK
- * - DELETE ALL RECEIVED FILES
- * - DELETE 1 RECEIVED FILE
- * - DELETE ALL SENT FILES
- * - DELETE 1 SENT FILE
- * - EDIT FEEDBACK
- */
- if (isset($_GET['deleteReceived']) || isset($_GET['deleteSent'])
- || isset( $_GET['showFeedback']) || isset( $_GET['editFeedback'])) {
- if ($_GET['mailing']) {
- getUserOwningThisMailing($_GET['mailing'], $_user['user_id'], '408');
- $dropbox_person = new Dropbox_Person($_GET['mailing'], $is_courseAdmin, $is_courseTutor);
- } else {
- $dropbox_person = new Dropbox_Person($_user['user_id'], $is_courseAdmin, $is_courseTutor);
- }
- if (isset($_SESSION['sentOrder'])) {
- $dropbox_person->orderSentWork($_SESSION['sentOrder']);
- }
- if (isset($_SESSION['receivedOrder'])) {
- $dropbox_person->orderReceivedWork($_SESSION['receivedOrder']);
- }
- /*if (!$dropbox_person->isCourseAdmin || ! $dropbox_person->isCourseTutor) {
- die(get_lang('GeneralError').' (code 408)');
- }*/
- $tellUser = get_lang('FileDeleted');
- if (isset($_GET['deleteReceived'])) {
- if ($_GET['deleteReceived'] == 'all') {
- $dropbox_person->deleteAllReceivedWork();
- } elseif (is_numeric($_GET['deleteReceived'])) {
- $dropbox_person->deleteReceivedWork( $_GET['deleteReceived']);
- } else {
- die(get_lang('GeneralError').' (code 409)');
- }
- } elseif (isset( $_GET['deleteSent'])) {
- if ($_GET['deleteSent'] == 'all') {
- $dropbox_person->deleteAllSentWork( );
- } elseif (is_numeric($_GET['deleteSent'])) {
- $dropbox_person->deleteSentWork($_GET['deleteSent']);
- } else {
- die(get_lang('GeneralError').' (code 410)');
- }
- } elseif (isset($_GET['showFeedback'])) {
- $w = new Dropbox_SentWork($id = $_GET['showFeedback']);
- if ($w->uploader_id != $_user['user_id']) {
- getUserOwningThisMailing($w->uploader_id, $_user['user_id'], '411');
- }
- foreach ($w -> recipients as $r) {
- if (($fb = $r['feedback'])) {
- $fbarray[$r['feedback_date'].$r['name']] = $r['name'].' '.get_lang('SentOn', '').' '.$r['feedback_date'].":\n".$fb;
- }
- }
- if ($fbarray) {
- krsort($fbarray);
- echo '<textarea class="dropbox_feedbacks">',
- htmlspecialchars(implode("\n\n", $fbarray), ENT_QUOTES, api_get_system_encoding()), '</textarea>', "\n";
- } else {
- echo '<textarea class="dropbox_feedbacks"> </textarea>', "\n";
- }
- $tellUser = get_lang('ShowFeedback');
- } else { // if ( isset( $_GET['editFeedback'])) {
- $id = $_GET['editFeedback'];
- $found = false;
- foreach ($dropbox_person->receivedWork as $w) {
- if ($w->id == $id) {
- $found = true;
- break;
- }
- }
- if (!$found) die(get_lang('GeneralError').' (code 415)');
- echo '<form method="post" action="index.php">', "\n",
- '<input type="hidden" name="feedbackid" value="',
- $id, '"/>', "\n",
- '<textarea name="feedbacktext" class="dropbox_feedbacks">',
- htmlspecialchars($w->feedback, ENT_QUOTES, api_get_system_encoding()), '</textarea>', "<br />\n",
- '<input type="submit" name="feedbacksubmit" value="', get_lang('Ok', ''), '"/>', "\n",
- '</form>', "\n";
- $tellUser = get_lang('GiveFeedback');
- }
- /**
- * RESULTMESSAGE FOR DELETE FILE OR EDIT FEEDBACK
- */
- $return_message = get_lang('BackList');
- }
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