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358 lines
14 KiB
358 lines
14 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* @desc The dropbox is a personal (peer to peer) file exchange module that allows
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* you to send documents to a certain (group of) users.
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*
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* @version 1.3
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*
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* @author Jan Bols <jan@ivpv.UGent.be>, main programmer, initial version
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* @author René Haentjens <rene.haentjens@UGent.be>, several contributions
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* @author Roan Embrechts, virtual course support
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* @author Patrick Cool <patrick.cool@UGent.be>, Ghent University (see history version 1.3)
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*
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* @package chamilo.dropbox
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*
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* @todo complete refactoring. Currently there are about at least 3 sql queries needed for every individual dropbox document.
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* first we find all the documents that were sent (resp. received) by the user
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* then for every individual document the user(s)information who received (resp. sent) the document is searched
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* then for every individual document the feedback is retrieved
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* @todo the implementation of the dropbox categories could (on the database level) have been done more elegantly by storing the category
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* in the dropbox_person table because this table stores the relationship between the files (sent OR received) and the users
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*/
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/**
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HISTORY
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Version 1.1
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------------
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- dropbox_init1.inc.php: changed include statements to require statements. This way if a file is not found, it stops the execution of a script instead of continuing with warnings.
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- dropbox_init1.inc.php: the include files "claro_init_global.inc.php" & "debug.lib.inc.php" are first checked for their existence before including them. If they don't exist, in the .../include dir, they get loaded from the .../inc dir. This change is necessary because the UCL changed the include dir to inc.
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- dropbox_init1.inc.php: the databasetable name in the variable $dropbox_cnf["introTbl"] is chnged from "introduction" to "tool_intro"
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- install.php: after submit, checks if the database uses accueil or tool_list as a tablename
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- index.php: removed the behaviour of only the teachers that are allowed to delete entries
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- index.php: added field "lastUploadDate" in table dropbox_file to store information about last update when resubmiting a file
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- dropbox.inc.php: added $lang["lastUpdated"]
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- index.php: entries in received list show when file was last updated if it is updated
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- index.php: entries in sent list show when file was last resent if it was resent
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- dropbox_submit.php: add a unique id to every uploaded file
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- index.php: add POST-variable to the upload form with overwrite data when user decides to overwrite the previous sent file with new file
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- dropbox_submit.php: add sanity checks on POST['overwrite'] data
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- index.php: remove title field in upload form
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- dropbox_submit.php: remove use of POST['title'] variable
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- dropbox_init1.inc.php: added $dropbox_cnf["version"] variable
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- dropbox_class.inc.php: add $this->lastUploadDate to Dropbox_work class
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- dropbox.inc.php: added $lang['emptyTable']
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- index.php: if the received or sent list is empty, a message is displayed
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- dropbox_download.php: the $file var is set equal to the title-field of the filetable. So not constructed anymore by substracting the username from the filename
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- index.php: add check to see if column lastUploadDate exists in filetable
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- index.php: moved javascripts from dropbox_init2.inc.php to index.php
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- index.php: when specifying an uploadfile in the form, a checkbox allowing the user to overwrite a previously sent file is shown when the specified file has the same name as a previously uploaded file of that user.
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- index.php: assign all the metadata (author, description, date, recipient, sender) of an entry in a list to the class="dropbox_detail" and add css to html-header
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- index.php: assign all dates of entries in list to the class="dropbox_date" and add CSS
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- index.php: assign all persons in entries of list to the class="dropbox_person" and add CSS
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- dropbox.inc.php: added $lang['dropbox_version'] to indicate the lates version. This must be equal to the $dropbox_cnf['version'] variable.
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- dropbox_init1.inc.php: if the newest lang file isn't loaded by claro_init_global.inc.php from the .../lang dir it will be loaded locally from the .../plugin/dropbox/ dir. This way an administrator must not install the dropbox.inc.php in the .../lang/english dir, but he can leave it in the local .../plugin/dropbox/ dir. However if you want to present multiple language translations of the file you must still put the file in the /lang/ dir, because there is no language management system inside the .../plugin/dropbox dir.
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- mime.inc.php: created this file. It contains an array $mimetype with all the mimetypes that are used by dropbox_download.php to give hinst to the browser during download about content
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- dropbox_download.php: remove https specific headers because they're not necessary
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- dropbox_download.php: use application/octet-stream as the default mime and inline as the default Content-Disposition
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- dropbox.inc.php: add lang vars for "order by" action
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- dropbox_class.inc.php: add methods orderSentWork, orderReceivedWork en _cmpWork and propery _orderBy to class Dropbox_person to take care of sorting
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- index.php: add selectionlist to headers of sent/received lists to select "order by" and add code to keep selected value in sessionvar.
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- index.php: moved part of a <a> hyperlink to previous line to remove the underlined space between symbol and title of a work entry in the sent/received list
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- index.php: add filesize info in sent/received lists
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- dropbox_submit.php: resubmit prevention only for GET action, because it gives some annoying behaviour in POST situation: white screen in IE6
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Version 1.2
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-----------
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- adapted entire dropbox tool so it can be used as a default tool in Dokeos 1.5
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- index.php: add event registration to log use of tool in stats tables
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- index.php: upload form checks for correct user selection and file specification before uploading the script
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- dropbox_init1.inc.php: added dropbox_cnf["allowOverwrite"] to allow or disallow overwriting of files
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- index.php: author name textbox is automatically filled in
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- mailing functionality (René Haentjens)
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- allowStudentToStudent and allowJustUpload options (id.)
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- help in separate window (id.)
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Version 1.3 (Patrick Cool)
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--------------------------
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- sortable table
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- categories
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- fixing a security hole
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- tabs (which can be disabled: see $dropbox_cnf['sent_received_tabs'])
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- same action on multiple documents ([zip]download, move, delete)
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- consistency with the docuements tool (open/download file, icons of documents, ...)
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- zip download of complete folder
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Version 1.4 (Yannick Warnier)
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-----------------------------
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- removed all self-built database tables names
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*/
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/**
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* First initialisation file with initialisation of variables and
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* without outputting anything to browser.
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* 1. Calls global.inc.php and lang file
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* 2. Initialises $dropbox_cnf array with all relevant vars
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* 3. Often used functions
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*
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* @version 1.31
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* @copyright 2004-2005
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* @author Jan Bols <jan@ivpv.UGent.be>, main programmer
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* @author René Haentjens, severalcontributions <rene.haentjens@UGent.be>
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* @author Roan Embrechts, virtual course support
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* @author Patrick Cool <patrick.cool@UGent.be>
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Chamilo Config Settings (AWACS)
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Refactoring
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tool introduction
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folders
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download file / folder (download icon)
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same action on multiple documents
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extended feedback
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* @package chamilo.dropbox
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*/
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/**
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* Code
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*/
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/* INIT SECTION */
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use \ChamiloSession as Session;
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$language_file = array('dropbox', 'document');
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// including the basic Chamilo initialisation file
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require_once '../inc/global.inc.php';
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$is_allowed_in_course = api_is_allowed_in_course();
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$is_courseTutor = api_is_course_tutor();
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$is_courseAdmin = api_is_course_admin();
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$current_course_tool = TOOL_DROPBOX;
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// the dropbox configuration parameters
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$dropbox_cnf = require_once 'dropbox_config.inc.php';
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Session::write('dropbox_conf', $dropbox_cnf);
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// the dropbox file that contains additional functions
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require_once 'dropbox_functions.inc.php';
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// protecting the script
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api_protect_course_script();
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$user_id = api_get_user_id();
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$course_code = api_get_course_id();
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$course_info = api_get_course_info($course_code);
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$session_id = api_get_session_id();
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$action = isset($_GET['action']) ? $_GET['action'] : null;
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$view = isset($_GET['view']) ? Security::remove_XSS($_GET['view']) : null;
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$postAction = isset($_POST['action']) ? $_POST['action'] : null;
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if (apiIsExcludedUserType()) {
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api_not_allowed(true);
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}
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if (empty($session_id)) {
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$is_course_member = CourseManager::is_user_subscribed_in_course($user_id, $course_code, false);
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} else {
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$is_course_member = CourseManager::is_user_subscribed_in_course($user_id, $course_code, true, $session_id);
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}
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/* Object Initialisation */
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// we need this here because the javascript to re-upload the file needs an array
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// off all the documents that have already been sent.
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// @todo consider moving the javascripts in a function that displays the javascripts
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// only when it is needed.
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if ($action == 'add') {
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$dropbox_person = new Dropbox_Person($_user['user_id'], $is_courseAdmin, $is_courseTutor);
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}
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/* Create javascript and htmlHeaders */
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$javascript = "<script type=\"text/javascript\">
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function confirmsend ()
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{
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if (confirm(\"".get_lang('MailingConfirmSend', '')."\")){
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return true;
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} else {
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return false;
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}
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return true;
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}
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function confirmation (name)
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{
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if (confirm(\"".get_lang('ConfirmDelete', '')." : \"+ name )){
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return true;
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} else {
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return false;
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}
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return true;
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}
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function checkForm (frm)
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{
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if (frm.elements['recipients[]'].selectedIndex < 0){
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alert(\"".get_lang('NoUserSelected', '')."\");
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return false;
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} else if (frm.file.value == '') {
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alert(\"".get_lang('NoFileSpecified', '')."\");
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return false;
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} else {
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return true;
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}
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}
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";
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if (dropbox_cnf('allowOverwrite')) {
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//sentArray keeps list of all files still available in the sent files list
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//of the user.
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//This is used to show or hide the overwrite file-radio button of the upload form
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$javascript .= "
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var sentArray = new Array(";
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if (isset($dropbox_person)) {
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for ($i = 0; $i < count($dropbox_person->sentWork); $i++) {
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if ($i > 0) {
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$javascript .= ", ";
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}
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$javascript .= "'".$dropbox_person->sentWork[$i]->title."'";
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}
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}
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$javascript .= ");
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function checkfile(str)
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{
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ind = str.lastIndexOf('/'); //unix separator
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if (ind == -1) ind = str.lastIndexOf('\\\'); //windows separator
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filename = str.substring(ind+1, str.length);
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found = 0;
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for (i=0; i<sentArray.length; i++) {
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if (sentArray[i] == filename) found=1;
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}
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//always start with unchecked box
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el = getElement('cb_overwrite');
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el.checked = false;
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//show/hide checkbox
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if (found == 1) {
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displayEl('overwrite');
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} else {
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undisplayEl('overwrite');
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}
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}
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function getElement(id)
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{
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return document.getElementById ? document.getElementById(id) :
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document.all ? document.all(id) : null;
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}
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function displayEl(id)
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{
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var el = getElement(id);
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if (el && el.style) el.style.display = '';
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}
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function undisplayEl(id)
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{
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var el = getElement(id);
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if (el && el.style) el.style.display = 'none';
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}";
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}
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$javascript .= "
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</script>";
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$htmlHeadXtra[] = $javascript;
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$htmlHeadXtra[] =
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"<script type=\"text/javascript\">
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function confirmation (name)
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{
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if (confirm(\" ". get_lang("AreYouSureToDelete") ." \"+ name + \" ?\"))
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{return true;}
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else
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{return false;}
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}
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</script>";
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Session::write('javascript',$javascript);
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$htmlHeadXtra[] = '<meta http-equiv="cache-control" content="no-cache">
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<meta http-equiv="pragma" content="no-cache">
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<meta http-equiv="expires" content="-1">';
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$checked_files = false;
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if (!$view OR $view == 'received') {
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$part = 'received';
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} elseif ($view = 'sent') {
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$part = 'sent';
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} else {
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header ('location: index.php?view='.$view.'&error=Error');
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}
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if (($postAction == 'download_received' || $postAction == 'download_sent') and !$_POST['store_feedback']) {
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$checked_file_ids = $_POST['id'];
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if (!is_array($checked_file_ids) || count($checked_file_ids) == 0) {
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header ('location: index.php?view='.$view.'&error=CheckAtLeastOneFile');
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} else {
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handle_multiple_actions();
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}
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exit;
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}
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/*
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* AUTHORISATION SECTION
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* Prevents access of all users that are not course members
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*/
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if ((!$is_allowed_in_course || !$is_course_member) && !api_is_allowed_to_edit(null, true)) {
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if ($origin != 'learnpath') {
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api_not_allowed(true);//print headers/footers
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} else {
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api_not_allowed();
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}
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exit();
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}
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/* BREADCRUMBS */
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if ($view == 'received') {
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$interbreadcrumb[] = array('url' => '../dropbox/index.php', 'name' => get_lang('Dropbox', ''));
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$nameTools = get_lang('ReceivedFiles');
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if ($action == 'addreceivedcategory') {
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$interbreadcrumb[] = array('url' => '../dropbox/index.php?view=received', 'name' => get_lang('ReceivedFiles'));
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$nameTools = get_lang('AddNewCategory');
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}
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}
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if ($view == 'sent' OR empty($view)) {
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$interbreadcrumb[] = array('url' => '../dropbox/index.php', 'name' => get_lang('Dropbox', ''));
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$nameTools = get_lang('SentFiles');
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if ($action == 'addsentcategory') {
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$interbreadcrumb[] = array('url' => '../dropbox/index.php?view=sent', 'name' => get_lang('SentFiles'));
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$nameTools = get_lang('AddNewCategory');
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}
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if ($action == 'add') {
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$interbreadcrumb[] = array ('url' => '../dropbox/index.php?view=sent', 'name' => get_lang('SentFiles'));
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$nameTools = get_lang('UploadNewFile');
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}
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}
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/* HEADER & TITLE */
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if (isset($origin) && $origin == 'learnpath') {
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// if we come from the learning path we have to include the stylesheet and the required javascripts manually.
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echo '<link rel="stylesheet" type="text/css" href="', api_get_path(WEB_CODE_PATH), 'css/default.css">';
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echo $javascript;
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} else {
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Display::display_header($nameTools, 'Dropbox');
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}
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