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- <?php //$id: $
- /* For licensing terms, see /dokeos_license.txt */
- /**
- * Dropbox module for Dokeos
- * Classes for the dropbox module.
- *
- * 3 classes are defined:
- * - Dropbox_Work:
- * . id
- * . uploader_id => who sent it // RH: Mailing: or mailing pseudo_id
- * . uploaderName
- * . filename => name of file stored on the server
- * . filesize // RH: Mailing: zero for sent zip
- * . title => name of file returned to user. This is the original name of the file
- * except when the original name contained spaces. In that case the spaces
- * will be replaced by _
- * . description
- * . author
- * . upload_date => date when file was first sent
- * . last_upload_date=> date when file was last sent
- * . isOldWork => has the work already been uploaded before
- *
- * . feedback_date => date of most recent feedback // RH: Feedback
- * . feedback => feedback text (or HTML?) // RH: Feedback
- *
- * - Dropbox_SentWork extends Dropbox_Work
- * . recipients => array of ["id"]["name"] lists the recipients of the work
- * // RH: Mailing: or mailing pseudo_id
- * ["feedback_date"]["feedback"] // RH: Feedback
- * - Dropbox_Person:
- * . userId
- * . receivedWork => array of Dropbox_Work objects
- * . sentWork => array of Dropbox_SentWork objects
- * . isCourseTutor
- * . isCourseAdmin
- * . _orderBy =>private property used for determining the field by which the works have to be ordered
- *
- * @version 1.30
- * @copyright 2004
- * @author Jan Bols <jan@ivpv.UGent.be>
- * with contributions by René Haentjens <rene.haentjens@UGent.be> (see RH)
- * @package dokeos.dropbox
- */
- class Dropbox_Work {
- public $id;
- public $uploader_id;
- public $uploaderName;
- public $filename;
- public $filesize;
- public $title;
- public $description;
- public $author;
- public $upload_date;
- public $last_upload_date;
- public $isOldWork;
- public $feedback_date, $feedback; // RH: Feedback
- /**
- * Constructor calls private functions to create a new work or retreive an existing work from DB
- * depending on the number of parameters
- *
- * @param unknown_type $arg1
- * @param unknown_type $arg2
- * @param unknown_type $arg3
- * @param unknown_type $arg4
- * @param unknown_type $arg5
- * @param unknown_type $arg6
- * @return Dropbox_Work
- */
- function Dropbox_Work ($arg1, $arg2=null, $arg3=null, $arg4=null, $arg5=null, $arg6=null) {
- if (func_num_args()>1) {
- $this->_createNewWork($arg1, $arg2, $arg3, $arg4, $arg5, $arg6);
- } else {
- $this->_createExistingWork($arg1);
- }
- }
- /**
- * private function creating a new work object
- *
- * @param unknown_type $uploader_id
- * @param unknown_type $title
- * @param unknown_type $description
- * @param unknown_type $author
- * @param unknown_type $filename
- * @param unknown_type $filesize
- *
- * @todo $author was originally a field but this has now been replaced by the first and lastname of the uploader (to prevent anonymous uploads)
- * As a consequence this parameter can be removed
- */
- function _createNewWork ($uploader_id, $title, $description, $author, $filename, $filesize) {
- global $_user;
- // Do some sanity checks
- settype($uploader_id, 'integer') or die(dropbox_lang("generalError")." (code 201)"); //set $uploader_id to correct type
- //if (! isCourseMember($uploader_id)) die(); //uploader must be coursemember to be able to upload
- //-->this check is done when submitting data so it isn't checked here
- // Fill in the properties
- $this->uploader_id = $uploader_id;
- $this->uploaderName = getUserNameFromId($this->uploader_id);
- $this->filename = $filename;
- $this->filesize = $filesize;
- $this->title = $title;
- $this->description = $description;
- $this->author = api_get_person_name($_user['firstName'], $_user['lastName']);
- $this->last_upload_date = date("Y-m-d H:i:s",time());
- // Check if object exists already. If it does, the old object is used
- // with updated information (authors, descriptio, upload_date)
- $this->isOldWork = FALSE;
- $sql="SELECT id, upload_date
- FROM ".dropbox_cnf("tbl_file")."
- WHERE filename = '".addslashes($this->filename)."'";
- $result = Database::query($sql,__FILE__,__LINE__);
- $res = Database::fetch_array($result);
- if ($res != FALSE) {
- $this->isOldWork = TRUE;
- }
- // insert or update the dropbox_file table and set the id property
- if ($this->isOldWork) {
- $this->id = $res["id"];
- $this->upload_date = $res["upload_date"];
- $sql = "UPDATE ".dropbox_cnf("tbl_file")."
- SET filesize = '".addslashes($this->filesize)."'
- , title = '".addslashes($this->title)."'
- , description = '".addslashes($this->description)."'
- , author = '".addslashes($this->author)."'
- , last_upload_date = '".addslashes($this->last_upload_date)."'
- WHERE id='".addslashes($this->id)."'";
- $result = Database::query($sql,__FILE__,__LINE__);
- } else {
- $this->upload_date = $this->last_upload_date;
- $sql="INSERT INTO ".dropbox_cnf("tbl_file")."
- (uploader_id, filename, filesize, title, description, author, upload_date, last_upload_date, session_id)
- VALUES ('".addslashes($this->uploader_id)."'
- , '".addslashes($this->filename)."'
- , '".addslashes($this->filesize)."'
- , '".addslashes($this->title)."'
- , '".addslashes($this->description)."'
- , '".addslashes($this->author)."'
- , '".addslashes($this->upload_date)."'
- , '".addslashes($this->last_upload_date)."'
- , ".intval($_SESSION['id_session'])."
- )";
- $result = Database::query($sql,__FILE__,__LINE__);
- $this->id = Database::insert_id(); //get automatically inserted id
- }
- // insert entries into person table
- $sql="INSERT INTO ".dropbox_cnf("tbl_person")."
- (file_id, user_id)
- VALUES ('".addslashes($this->id)."'
- , '".addslashes($this->uploader_id)."'
- )";
- $result = Database::query($sql); //if work already exists no error is generated
- }
- /**
- * private function creating existing object by retreiving info from db
- *
- * @param unknown_type $id
- */
- function _createExistingWork ($id) {
- global $_user; // RH: Feedback
- // Do some sanity checks
- settype($id, 'integer') or die(dropbox_lang("generalError")." (code 205)"); //set $id to correct type
- // get the data from DB
- $sql="SELECT uploader_id, filename, filesize, title, description, author, upload_date, last_upload_date, cat_id
- FROM ".dropbox_cnf("tbl_file")."
- WHERE id='".addslashes($id)."'";
- $result = Database::query($sql,__FILE__,__LINE__);
- $res = Database::fetch_array($result, 'ASSOC');
- // Check if uploader is still in Dokeos system
- $uploader_id = stripslashes($res["uploader_id"]);
- $uploaderName = getUserNameFromId($uploader_id);
- if ($uploaderName == FALSE) {
- //deleted user
- $this->uploader_id = -1;
- $this->uploaderName = dropbox_lang("anonymous", "noDLTT");
- } else {
- $this->uploader_id = $uploader_id;
- $this->uploaderName = $uploaderName;
- }
- // Fill in properties
- $this->id = $id;
- $this->filename = stripslashes($res["filename"]);
- $this->filesize = stripslashes($res["filesize"]);
- $this->title = stripslashes($res["title"]);
- $this->description = stripslashes($res["description"]);
- $this->author = stripslashes($res["author"]);
- $this->upload_date = stripslashes($res["upload_date"]);
- $this->last_upload_date = stripslashes($res["last_upload_date"]);
- $this->category = $res['cat_id'];
- // Getting the feedback on the work.
- if ($_GET['action']=='viewfeedback' AND $this->id==$_GET['id']) {
- $feedback2=array();
- $sql_feedback = "SELECT * FROM ".dropbox_cnf("tbl_feedback")." WHERE file_id='".$id."' ORDER BY feedback_id ASC";
- $result = Database::query($sql_feedback, __FILE__, __LINE__);
- while ($row_feedback=Database::fetch_array($result)) {
- $row_feedback['feedback'] = Security::remove_XSS($row_feedback['feedback']);
- $feedback2[]=$row_feedback;
- }
- $this->feedback2= $feedback2;
- }
- /*
- // RH: Feedback
- $result = Database::query("SELECT feedback_date, feedback, cat_id FROM ".
- dropbox_cnf("tbl_post")." WHERE dest_user_id='".$_user['user_id'].
- "' AND file_id='".$id."'",__FILE__,__LINE__);
- if ($res = Database::fetch_array($result))
- {
- $this->feedback_date = $res["feedback_date"];
- $this->feedback = $res["feedback"];
- $this->category = $res['cat_id'];
- } // do not fail if there is no recipient = current user...*/
- }
- }
- class Dropbox_SentWork extends Dropbox_Work
- {
- public $recipients; //array of ["id"]["name"] arrays
- /**
- * Constructor calls private functions to create a new work or retreive an existing work from DB
- * depending on the number of parameters
- *
- * @param unknown_type $arg1
- * @param unknown_type $arg2
- * @param unknown_type $arg3
- * @param unknown_type $arg4
- * @param unknown_type $arg5
- * @param unknown_type $arg6
- * @param unknown_type $arg7
- * @return Dropbox_SentWork
- */
- function Dropbox_SentWork ($arg1, $arg2=null, $arg3=null, $arg4=null, $arg5=null, $arg6=null, $arg7=null) {
- if (func_num_args()>1) {
- $this->_createNewSentWork ($arg1, $arg2, $arg3, $arg4, $arg5, $arg6, $arg7);
- } else {
- $this->_createExistingSentWork ($arg1);
- }
- }
- /**
- * private function creating a new SentWork object
- *
- * @param unknown_type $uploader_id
- * @param unknown_type $title
- * @param unknown_type $description
- * @param unknown_type $author
- * @param unknown_type $filename
- * @param unknown_type $filesize
- * @param unknown_type $recipient_ids
- */
- function _createNewSentWork ($uploader_id, $title, $description, $author, $filename, $filesize, $recipient_ids) {
- // Call constructor of Dropbox_Work object
- $this->Dropbox_Work($uploader_id, $title, $description, $author, $filename, $filesize);
- // Do sanity checks on recipient_ids array & property fillin
- // The sanity check for ex-coursemembers is already done in base constructor
- settype($uploader_id, 'integer') or die(dropbox_lang("generalError")." (code 208)"); //set $uploader_id to correct type
- $justSubmit = FALSE; // RH: mailing zip-file or just upload
- if ( is_int($recipient_ids)) {
- $justSubmit = TRUE; $recipient_ids = array($recipient_ids + $this->id);
- } elseif ( count($recipient_ids) == 0) { // RH: Just Upload
- $justSubmit = TRUE; $recipient_ids = array($uploader_id);
- }
- if (! is_array($recipient_ids) || count($recipient_ids) == 0) {
- die(dropbox_lang("generalError")." (code 209)");
- }
- foreach ($recipient_ids as $rec) {
- if (empty($rec)) die(dropbox_lang("generalError")." (code 210)");
- //if (!isCourseMember($rec)) die(); //cannot sent document to someone outside of course
- //this check is done when validating submitted data
- $this->recipients[] = array("id"=>$rec, "name"=>getUserNameFromId($rec));
- }
- // insert data in dropbox_post and dropbox_person table for each recipient
- foreach ($this->recipients as $rec) {
- $sql="INSERT INTO ".dropbox_cnf("tbl_post")."
- (file_id, dest_user_id, session_id)
- VALUES ('".addslashes($this->id)."', '".addslashes($rec["id"])."', ".intval($_SESSION['id_session']).")";
- $result = Database::query($sql); //if work already exists no error is generated
- //insert entries into person table
- $sql="INSERT INTO ".dropbox_cnf("tbl_person")."
- (file_id, user_id)
- VALUES ('".addslashes($this->id)."'
- , '".addslashes($rec["id"])."'
- )";
- // RH: do not add recipient in person table if mailing zip or just upload
- if (!$justSubmit) {
- $result = Database::query($sql); //if work already exists no error is generated
- }
- //update item_property (previously last_tooledit) table for each recipient
- global $_course, $dropbox_cnf;
- if (($ownerid = $this->uploader_id) > $dropbox_cnf["mailingIdBase"]) {
- $ownerid = getUserOwningThisMailing($ownerid);
- }
- if (($recipid = $rec["id"]) > $dropbox_cnf["mailingIdBase"]) {
- $recipid = $ownerid; // mailing file recipient = mailing id, not a person
- }
- api_item_property_update($_course, TOOL_DROPBOX, $this->id, "DropboxFileAdded", $ownerid, NULL, $recipid) ;
- }
- }
- /**
- * private function creating existing object by retreiving info from db
- *
- * @param unknown_type $id
- */
- function _createExistingSentWork ($id) {
- // Call constructor of Dropbox_Work object
- $this->Dropbox_Work($id);
- // Do sanity check. The sanity check for ex-coursemembers is already done in base constructor
- settype($id, 'integer') or die(dropbox_lang("generalError")." (code 211)"); //set $id to correct type
- //Fill in recipients array/
- $this->recipients = array(); // RH: Feedback: added to SELECT
- $sql="SELECT dest_user_id, feedback_date, feedback
- FROM ".dropbox_cnf("tbl_post")."
- WHERE file_id='".addslashes($id)."'";
- $result = Database::query($sql,__FILE__,__LINE__);
- while ($res = Database::fetch_array($result)) {
- // check for deleted users
- $dest_user_id = $res["dest_user_id"];
- $recipientName = getUserNameFromId($dest_user_id);
- //$this->category=$res['cat_id'];
- if ($recipientName == FALSE) {
- $this->recipients[] = array("id"=>-1, "name"=> dropbox_lang("anonymous", "noDLTT"));
- } else {
- $this->recipients[] = array("id"=>$dest_user_id, "name"=>$recipientName, "user_id"=>$dest_user_id,
- "feedback_date"=>$res["feedback_date"], "feedback"=>$res["feedback"]); // RH: Feedback
- }
- }
- }
- }
- class Dropbox_Person
- {
- public $receivedWork; //array of Dropbox_Work objects
- public $sentWork; //array of Dropbox_SentWork objects
- public $userId = 0;
- public $isCourseAdmin = FALSE;
- public $isCourseTutor = FALSE;
- public $_orderBy = ''; //private property that determines by which field
- //the receivedWork and the sentWork arrays are sorted
- /**
- * Constructor for recreating the Dropbox_Person object
- *
- * @param unknown_type $userId
- * @param unknown_type $isCourseAdmin
- * @param unknown_type $isCourseTutor
- * @return Dropbox_Person
- */
- function Dropbox_Person ($userId, $isCourseAdmin, $isCourseTutor) {
- // Fill in properties
- $this->userId = $userId;
- $this->isCourseAdmin = $isCourseAdmin;
- $this->isCourseTutor = $isCourseTutor;
- $this->receivedWork = array();
- $this->sentWork = array();
- //Note: perhaps include an ex coursemember check to delete old files
- $session_id = api_get_session_id();
- $condition_session = api_get_session_condition($session_id);
- $post_tbl = Database::get_course_table(TABLE_DROPBOX_POST);
- $person_tbl = Database::get_course_table(TABLE_DROPBOX_PERSON);
- $file_tbl = Database::get_course_table(TABLE_DROPBOX_FILE);
- // find all entries where this person is the recipient
- $sql = "SELECT r.file_id, r.cat_id
- FROM $post_tbl r, $person_tbl p
- WHERE r.dest_user_id = '".addslashes($this->userId)."'
- AND r.dest_user_id = p.user_id
- AND r.file_id = p.file_id $condition_session";
- //if (intval($_SESSION['id_session']>0)) { $sql .= " AND r.session_id = ".intval($_SESSION['id_session']); }
- $result = Database::query($sql,__FILE__,__LINE__);
- while ($res = Database::fetch_array($result)) {
- $temp = new Dropbox_Work($res["file_id"]);
- $temp -> category = $res['cat_id'];
- $this->receivedWork[] = $temp;
- }
- // find all entries where this person is the sender/uploader
- $sql = "SELECT f.id
- FROM $file_tbl f, $person_tbl p
- WHERE f.uploader_id = '".addslashes($this->userId)."'
- AND f.uploader_id = p.user_id
- AND f.id = p.file_id $condition_session";
- //if(intval($_SESSION['id_session']>0)) { $sql .= " AND f.session_id = ".intval($_SESSION['id_session']); }
- $result =Database::query($sql,__FILE__,__LINE__);
- while ($res = Database::fetch_array($result)) {
- $this->sentWork[] = new Dropbox_SentWork($res["id"]);
- }
- }
- /**
- * This private method is used by the usort function in the
- * orderSentWork and orderReceivedWork methods.
- * It compares 2 work-objects by 1 of the properties of that object, dictated by the
- * private property _orderBy
- *
- * @param unknown_type $a
- * @param unknown_type $b
- * @return -1, 0 or 1 dependent of the result of the comparison.
- */
- function _cmpWork ($a, $b) {
- $sort = $this->_orderBy;
- $aval = $a->$sort;
- $bval = $b->$sort;
- if ($sort == 'recipients') { //the recipients property is an array so we do the comparison based on the first item of the recipients array
- $aval = $aval[0]['name'];
- $bval = $bval[0]['name'];
- }
- if ($sort == 'filesize') { //filesize is not a string, so we use other comparison technique
- return $aval<$bval ? -1 : 1;
- } elseif ($sort == 'title') { // natural order for sorting titles is more "human-friendly"
- return api_strnatcmp($aval, $bval);
- } else {
- return api_strcasecmp($aval, $bval);
- }
- }
- /**
- * method that sorts the objects in the sentWork array, dependent on the $sort parameter.
- * $sort can be lastDate, firstDate, title, size, ...
- *
- * @param unknown_type $sort
- */
- function orderSentWork($sort) {
- /*
- */
- switch($sort) {
- case 'lastDate':
- $this->_orderBy = 'last_upload_date';
- break;
- case 'firstDate':
- $this->_orderBy = 'upload_date';
- break;
- case 'title':
- $this->_orderBy = 'title';
- break;
- case 'size':
- $this->_orderBy = 'filesize';
- break;
- case 'author':
- $this->_orderBy = 'author';
- break;
- case 'recipient':
- $this->_orderBy = 'recipients';
- break;
- default:
- $this->_orderBy = 'last_upload_date';
- } // switch
- usort($this->sentWork, array($this,"_cmpWork")); //this calls the _cmpWork method
- }
- /**
- * method that sorts the objects in the receivedWork array, dependent on the $sort parameter.
- * $sort can be lastDate, firstDate, title, size, ...
- * @param unknown_type $sort
- */
- function orderReceivedWork($sort) {
- switch($sort) {
- case 'lastDate':
- $this->_orderBy = 'last_upload_date';
- break;
- case 'firstDate':
- $this->_orderBy = 'upload_date';
- break;
- case 'title':
- $this->_orderBy = 'title';
- break;
- case 'size':
- $this->_orderBy = 'filesize';
- break;
- case 'author':
- $this->_orderBy = 'author';
- break;
- case 'sender':
- $this->_orderBy = 'uploaderName';
- break;
- default:
- $this->_orderBy = 'last_upload_date';
- } // switch
- usort($this->receivedWork, array($this,"_cmpWork")); //this calls the _cmpWork method
- }
- /**
- * Deletes all the received work of this person
- *
- */
- function deleteAllReceivedWork () {
- //delete entries in person table concerning received works
- foreach ($this->receivedWork as $w) {
- Database::query("DELETE FROM ".dropbox_cnf("tbl_person")." WHERE user_id='".$this->userId."' AND file_id='".$w->id."'",__FILE__,__LINE__);
- }
- removeUnusedFiles(); //check for unused files
- }
- /**
- * Deletes all the received categories and work of this person
- */
- function deleteReceivedWorkFolder($id) {
- $sql = "DELETE FROM ".dropbox_cnf("tbl_file")." where cat_id = '".$id."' ";
- if(!Database::query($sql)) return false;
- $sql = "DELETE FROM ".dropbox_cnf("tbl_category")." where cat_id = '".$id."' ";
- if(!Database::query($sql)) return false;
- $sql = "DELETE FROM ".dropbox_cnf("tbl_post")." where cat_id = '".$id."' ";
- if(!Database::query($sql)) return false;
- return true;
- }
- /**
- * Deletes a received dropbox file of this person with id=$id
- *
- * @param integer $id
- */
- function deleteReceivedWork ($id) {
- //id check
- $found = false;
- foreach($this->receivedWork as $w) {
- if ($w->id == $id) {
- $found = true;
- break;
- }
- }
- if (! $found) {
- if(!$this->deleteReceivedWorkFolder($id)) {
- die(dropbox_lang("generalError")." (code 216)");
- }
- }
- //delete entries in person table concerning received works
- Database::query("DELETE FROM ".dropbox_cnf("tbl_person")." WHERE user_id='".$this->userId."' AND file_id='".$id."'",__FILE__,__LINE__);
- removeUnusedFiles(); //check for unused files
- }
- /**
- * Deletes all the sent dropbox files of this person
- */
- function deleteAllSentWork () {
- //delete entries in person table concerning sent works
- foreach ($this->sentWork as $w) {
- Database::query("DELETE FROM ".dropbox_cnf("tbl_person")." WHERE user_id='".$this->userId."' AND file_id='".$w->id."'",__FILE__,__LINE__);
- removeMoreIfMailing($w->id); // RH: Mailing: see init1
- }
- removeUnusedFiles(); //check for unused files
- }
- /**
- * Deletes a sent dropbox file of this person with id=$id
- *
- * @param unknown_type $id
- */
- function deleteSentWork ($id) {
- //index check
- $found = false;
- foreach($this->sentWork as $w) {
- if ($w->id == $id) {
- $found = true;
- break;
- }
- }
- if (!$found) {
- if(!$this->deleteReceivedWorkFolder($id)) {
- die(dropbox_lang("generalError")." (code 219)");
- }
- }
- //$file_id = $this->sentWork[$index]->id; // RH: Mailing
- //delete entries in person table concerning sent works
- Database::query("DELETE FROM ".dropbox_cnf("tbl_person")." WHERE user_id='".$this->userId."' AND file_id='".$id."'",__FILE__,__LINE__);
- removeMoreIfMailing($id); // RH: Mailing: see init1
- removeUnusedFiles(); //check for unused files
- }
- /**
- * Updates feedback for received work of this person with id=$id
- *
- * @param unknown_type $id
- * @param unknown_type $text
- */
- function updateFeedback($id, $text) {
- global $_course, $dropbox_cnf;
- //id check
- $found = false; $wi = -1;
- foreach($this->receivedWork as $w) {
- $wi++;
- if ($w->id == $id){
- $found = true;
- break;
- } // foreach (... as $wi -> $w) gives error 221! (no idea why...)
- }
- if (! $found) {
- die(dropbox_lang("generalError")." (code 221)");
- }
- $feedback_date = date("Y-m-d H:i:s",time());
- $this->receivedWork[$wi]->feedback_date = $feedback_date;
- $this->receivedWork[$wi]->feedback = $text;
- Database::query("UPDATE ".dropbox_cnf("tbl_post")." SET feedback_date='".
- addslashes($feedback_date)."', feedback='".addslashes($text).
- "' WHERE dest_user_id='".$this->userId."' AND file_id='".$id."'",__FILE__,__LINE__);
- //update item_property (previously last_tooledit) table
- if (($ownerid = $this->receivedWork[$wi]->uploader_id) > $dropbox_cnf["mailingIdBase"]) {
- $ownerid = getUserOwningThisMailing($ownerid);
- }
- api_item_property_update($_course, TOOL_DROPBOX, $this->receivedWork[$wi]->id, "DropboxFileUpdated", $this->userId, NULL, $ownerid) ;
- }
- /**
- * Filter the received work
- * @param string $type
- * @param string $value
- */
- function filter_received_work($type,$value) {
- global $dropbox_cnf;
- $new_received_work = array();
- foreach ($this->receivedWork as $index => $work) {
- switch ($type) {
- case 'uploader_id':
- if ($work->uploader_id == $value ||
- ($work->uploader_id > $dropbox_cnf["mailingIdBase"] &&
- getUserOwningThisMailing($work->uploader_id) == $value)) {
- $new_received_work[] = $work;
- }
- break;
- default:
- $new_received_work[] = $work;
- }
- }
- $this->receivedWork = $new_received_work;
- }
- }
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