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110 lines
3.2 KiB
110 lines
3.2 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* This file is responsible for passing requested file attachments from messages
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* Html files are parsed to fix a few problems with URLs,
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* but this code will hopefully be replaced soon by an Apache URL
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* rewrite mechanism.
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*
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* @package chamilo.messages
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*/
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session_cache_limiter('public');
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require_once __DIR__.'/../inc/global.inc.php';
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$file_url = isset($_GET['file']) ? $_GET['file'] : '';
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$type = isset($_GET['type']) ? $_GET['type'] : '';
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if (empty($file_url)) {
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api_not_allowed();
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}
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// IMPORTANT to avoid caching of documents
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header('Expires: Wed, 01 Jan 1990 00:00:00 GMT');
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header('Cache-Control: public');
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header('Pragma: no-cache');
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//change the '&' that got rewritten to '///' by mod_rewrite back to '&'
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$file_url = str_replace('///', '&', $file_url);
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//still a space present? it must be a '+' (that got replaced by mod_rewrite)
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$file_url = str_replace(' ', '+', $file_url);
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$file_url = str_replace('/..', '', $file_url); //echo $doc_url;
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$tbl_messsage = Database::get_main_table(TABLE_MESSAGE);
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$tbl_messsage_attachment = Database::get_main_table(TABLE_MESSAGE_ATTACHMENT);
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$file_url = Database::escape_string($file_url);
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$sql = "SELECT filename, message_id
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FROM $tbl_messsage_attachment
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WHERE path LIKE BINARY '$file_url'";
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$result = Database::query($sql);
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$row = Database::fetch_array($result, 'ASSOC');
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$title = str_replace(' ', '_', $row['filename']);
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$message_id = $row['message_id'];
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// allow download only for user sender and user receiver
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$sql = "SELECT user_sender_id, user_receiver_id, group_id
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FROM $tbl_messsage WHERE id = '$message_id'";
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$rs = Database::query($sql);
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$row_users = Database::fetch_array($rs, 'ASSOC');
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$current_uid = api_get_user_id();
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// get message user id for inbox/outbox
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$message_uid = '';
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switch ($type) {
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case MessageManager::MESSAGE_TYPE_INBOX:
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$message_uid = $row_users['user_receiver_id'];
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break;
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case MessageManager::MESSAGE_TYPE_OUTBOX:
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$message_uid = $row_users['user_sender_id'];
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break;
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}
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// allow to the correct user for download this file
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$not_allowed_to_edit = false;
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$userGroup = new UserGroup();
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if (!empty($row_users['group_id'])) {
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$users_group = $userGroup->get_all_users_by_group($row_users['group_id']);
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if (!in_array($current_uid, array_keys($users_group))) {
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$not_allowed_to_edit = true;
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}
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} else {
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if ($current_uid != $message_uid) {
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$not_allowed_to_edit = true;
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}
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}
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if ($not_allowed_to_edit) {
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api_not_allowed(true);
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exit;
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}
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// set the path directory file
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if (!empty($row_users['group_id'])) {
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$path_user_info = $userGroup->get_group_picture_path_by_id(
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$row_users['group_id'],
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'system',
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true
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);
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} else {
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$path_user_info['dir'] = UserManager::getUserPathById($message_uid, 'system');
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}
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$full_file_name = $path_user_info['dir'].'message_attachments/'.$file_url;
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if (Security::check_abs_path($full_file_name, $path_user_info['dir'].'message_attachments/')) {
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// launch event
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Event::event_download($file_url);
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$result = DocumentManager::file_send_for_download(
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$full_file_name,
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true,
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$title
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);
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if ($result === false) {
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api_not_allowed(true);
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}
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}
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exit;
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