Chamilo is a learning management system focused on ease of use and accessibility
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chamilo-lms/public/main/dropbox/dropbox_download.php

107 lines
3.9 KiB

<?php
/* For licensing terms, see /license.txt */
require_once __DIR__.'/../inc/global.inc.php';
$_course = api_get_course_info();
// the dropbox file that contains additional functions
require_once 'dropbox_functions.inc.php';
/* DOWNLOAD A FOLDER */
$course_id = api_get_course_int_id();
$user_id = api_get_user_id();
if (isset($_GET['cat_id']) &&
is_numeric($_GET['cat_id']) &&
'downloadcategory' == $_GET['action'] &&
isset($_GET['sent_received'])
) {
/** step 1: constructing the sql statement.
Therefore we have to create to separate sql statements to find which files are in the category
(depending if we zip-download a sent category or a received category)*/
if ('sent' == $_GET['sent_received']) {
// here we also incorporate the person table to make sure that deleted sent documents are not included.
$sql = "SELECT DISTINCT file.id, file.filename, file.title
FROM ".Database::get_course_table(TABLE_DROPBOX_FILE)." file
INNER JOIN ".Database::get_course_table(TABLE_DROPBOX_PERSON)." person
ON (person.file_id=file.id AND file.c_id = $course_id AND person.c_id = $course_id)
WHERE
file.uploader_id = $user_id AND
file.cat_id='".intval($_GET['cat_id'])."' AND
person.user_id = $user_id";
}
if ('received' == $_GET['sent_received']) {
$sql = "SELECT DISTINCT file.id, file.filename, file.title
FROM ".Database::get_course_table(TABLE_DROPBOX_FILE)." file
INNER JOIN ".Database::get_course_table(TABLE_DROPBOX_PERSON)." person
ON (person.file_id=file.id AND file.c_id = $course_id AND person.c_id = $course_id)
INNER JOIN ".Database::get_course_table(TABLE_DROPBOX_POST)." post
ON (post.file_id = file.id AND post.c_id = $course_id AND file.c_id = $course_id)
WHERE
post.cat_id = ".intval($_GET['cat_id'])." AND
post.dest_user_id = $user_id";
}
$files_to_download = [];
$result = Database::query($sql);
while ($row = Database::fetch_array($result)) {
$files_to_download[] = $row['id'];
}
if (!is_array($files_to_download) || empty($files_to_download)) {
header('Location: index.php?'.api_get_cidreq().'&view='.Security::remove_XSS($_GET['sent_received']).'&error=ErrorNoFilesInFolder');
exit;
}
zip_download($files_to_download);
exit;
}
/* DOWNLOAD A FILE */
/* AUTHORIZATION */
// Check if the id makes sense
if (!isset($_GET['id']) || !is_numeric($_GET['id'])) {
api_not_allowed(true);
exit;
}
// Check if the user is allowed to download the file
$allowed_to_download = false;
if (user_can_download_file($_GET['id'], api_get_user_id())) {
$allowed_to_download = true;
}
/* ERROR IF NOT ALLOWED TO DOWNLOAD */
if (!$allowed_to_download) {
api_not_allowed(
true,
Display::return_message(
get_lang('You are not allowed to download this file.'),
'error'
)
);
exit;
} else {
/* DOWNLOAD THE FILE */
// the user is allowed to download the file
$_SESSION['_seen'][$_course['id']][TOOL_DROPBOX][] = intval($_GET['id']);
$work = new Dropbox_Work($_GET['id']);
//path to file as stored on server
$path = api_get_path(SYS_COURSE_PATH).$_course['path'].'/dropbox/'.$work->filename;
if (!Security::check_abs_path(
$path,
api_get_path(SYS_COURSE_PATH).$_course['path'].'/dropbox/'
)
) {
api_not_allowed(true);
}
$file = $work->title;
$result = DocumentManager::file_send_for_download($path, true, $file);
if (false === $result) {
api_not_allowed(true);
}
exit;
}
//@todo clean this file the code below is useless there are 2 exits in previous conditions ... maybe a bad copy/paste/merge?
exit;