*
* Licensed under GPLv3
* (see COPYING for full license text)
*
*/
class File extends CI_Controller {
public $data = array();
public $var;
function __construct()
{
parent::__construct();
$this->var = new StdClass();
$this->load->library('migration');
if ( ! $this->migration->current()) {
show_error($this->migration->error_string());
}
$old_path = getenv("PATH");
putenv("PATH=$old_path:/usr/local/bin:/usr/bin:/bin:/usr/local/sbin:/usr/sbin:/sbin");
mb_internal_encoding('UTF-8');
$this->load->helper(array('form', 'filebin'));
$this->load->model('file_mod');
$this->load->model('muser');
$this->var->latest_client = false;
if (file_exists(FCPATH.'data/client/latest')) {
$this->var->latest_client = trim(file_get_contents(FCPATH.'data/client/latest'));
}
if (is_cli_client()) {
$this->var->view_dir = "file_plaintext";
} else {
$this->var->view_dir = "file";
}
if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW']) && $_SERVER['PHP_AUTH_USER'] && $_SERVER['PHP_AUTH_PW']) {
if (!$this->muser->login($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW'])) {
// TODO: better message
echo "login failed.\n";
exit;
}
}
$this->data['username'] = $this->muser->get_username();
$this->data['title'] = "FileBin";
}
function index()
{
// Try to guess what the user would like to do.
$id = $this->uri->segment(1);
if(isset($_FILES['file'])) {
$this->do_upload();
} elseif ($id != "file" && $this->file_mod->id_exists($id)) {
$this->_download();
} elseif ($id && $id != "file") {
$this->_non_existent();
} else {
$this->upload_form();
}
}
function _download()
{
$id = $this->uri->segment(1);
$mode = $this->uri->segment(2);
$filedata = $this->file_mod->get_filedata($id);
$file = $this->file_mod->file($filedata['hash']);
if (!$this->file_mod->valid_id($id)) {
$this->non_existent();
return;
}
// don't allow unowned files to be downloaded
if ($filedata["user"] == 0) {
$this->file_mod->non_existent();
return;
}
// helps to keep traffic low when reloading
$etag = $filedata["hash"]."-".$filedata["date"];
// autodetect the mode for highlighting if the URL contains a / after the ID (/ID/)
// /ID/mode disables autodetection
$autodetect_mode = !$mode && substr_count(ltrim($this->uri->uri_string(), "/"), '/') >= 1;
if ($autodetect_mode) {
$mode = $this->file_mod->get_highlight_mode($filedata["mimetype"], $filedata["filename"]);
}
// resolve aliases of modes
// this is mainly used for compatibility
$mode = $this->file_mod->resolve_mode_alias($mode);
// create the qr code for /ID/
if ($mode == "qr") {
handle_etag($etag);
header("Content-disposition: inline; filename=\"".$id."_qr.png\"\n");
header("Content-Type: image/png\n");
passthru('qrencode -s 10 -o - '.escapeshellarg(site_url($id).'/'));
exit();
}
// user wants to the the plain file
if ($mode == 'plain') {
handle_etag($etag);
rangeDownload($file, $filedata["filename"], "text/plain");
exit();
}
if ($mode == 'info') {
$this->_display_info($id);
return;
}
// if there is no mimetype mapping we can't highlight it
$can_highlight = $this->file_mod->can_highlight($filedata["mimetype"]);
$filesize_too_big = filesize($file) > $this->config->item('upload_max_text_size');
if (!$can_highlight || $filesize_too_big || !$mode) {
// prevent javascript from being executed and forbid frames
// this should allow us to serve user submitted HTML content without huge security risks
foreach (array("X-WebKit-CSP", "X-Content-Security-Policy") as $header_name) {
header("$header_name: allow 'none'; img-src *; media-src *; font-src *; style-src * 'unsafe-inline'; script-src 'none'; object-src *; frame-src 'none'; ");
}
handle_etag($etag);
rangeDownload($file, $filedata["filename"], $filedata["mimetype"]);
exit();
}
$this->data['title'] = htmlspecialchars($filedata['filename']);
$this->data['id'] = $id;
header("Content-Type: text/html\n");
$this->data['current_highlight'] = htmlspecialchars($mode);
$this->data['timeout'] = $this->file_mod->get_timeout_string($id);
echo $this->load->view($this->var->view_dir.'/html_header', $this->data, true);
// highlight the file and chache the result
$this->load->library("MemcacheLibrary");
if (! $cached = $this->memcachelibrary->get($filedata['hash'].'_'.$mode)) {
ob_start();
if ($mode == "rmd") {
echo '| '."\n";
passthru('perl '.FCPATH.'scripts/Markdown.pl '.escapeshellarg($file));
} elseif ($mode == "ascii") {
echo ' | '."\n";
passthru('perl '.FCPATH.'scripts/ansi2html '.escapeshellarg($file));
echo "\n";
} else {
echo ' | ';
// generate line numbers (links)
passthru('perl -ne \'print "$.\n"\' '.escapeshellarg($file));
echo ' | '."\n";
$this->load->library('geshi');
$this->geshi->initialize(array('set_language' => $mode, 'set_source' => file_get_contents($file), 'enable_classes' => 'true'));
echo $this->geshi->parse_code();
}
$cached = ob_get_contents();
ob_end_clean();
$this->memcachelibrary->set($filedata['hash'].'_'.$mode, $cached, 100);
}
echo $cached;
echo $this->load->view($this->var->view_dir.'/html_footer', $this->data, true);
return;
}
function _display_info($id)
{
$this->data["title"] .= " - Info $id";
$this->data["filedata"] = $this->file_mod->get_filedata($id);
$this->data["id"] = $id;
$this->data['timeout'] = $this->file_mod->get_timeout_string($id);
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/file_info', $this->data);
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
function _non_existent()
{
$this->data["title"] .= " - Not Found";
$this->output->set_status_header(404);
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/non_existent', $this->data);
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
function _show_url($id, $mode)
{
$redirect = false;
if (!$this->muser->logged_in()) {
// keep the upload but require the user to login
$this->session->set_userdata("last_upload", array(
"id" => $id,
"mode" => $mode
));
$this->session->set_flashdata("uri", "file/claim_id");
$this->muser->require_access();
}
if ($mode) {
$this->data['url'] = site_url($id).'/'.$mode;
} else {
$this->data['url'] = site_url($id).'/';
$filedata = $this->file_mod->get_filedata($id);
$file = $this->file_mod->file($filedata['hash']);
$type = $filedata['mimetype'];
$mode = $this->file_mod->should_highlight($type);
// If we detected a highlightable file redirect,
// otherwise show the URL because browsers would just show a DL dialog
if ($mode) {
$redirect = true;
}
}
if (is_cli_client()) {
$redirect = false;
}
if ($redirect) {
redirect($this->data['url'], "location", 303);
} else {
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/show_url', $this->data);
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
}
function client()
{
$this->data['title'] .= ' - Client';
if ($this->var->latest_client) {
$this->data['client_link'] = base_url().'data/client/fb-'.$this->var->latest_client.'.tar.gz';
} else {
$this->data['client_link'] = false;
}
$this->data['client_link_dir'] = base_url().'data/client/';
$this->data['client_link_deb'] = base_url().'data/client/deb/';
$this->data['client_link_slackware'] = base_url().'data/client/slackware/';
if (is_cli_client()) {
$this->load->view($this->var->view_dir.'/header', $this->data);
}
$this->load->view($this->var->view_dir.'/client', $this->data);
if (is_cli_client()) {
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
}
function upload_form()
{
$this->data['title'] .= ' - Upload';
$this->data['small_upload_size'] = $this->config->item('small_upload_size');
$this->data['max_upload_size'] = $this->config->item('upload_max_size');
$this->data['upload_max_age'] = $this->config->item('upload_max_age')/60/60/24;
$this->data['contact_me_url'] = $this->config->item('contact_me_url');
$this->data['username'] = $this->muser->get_username();
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/upload_form', $this->data);
if (is_cli_client()) {
$this->client();
}
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
// Allow CLI clients to query the server for the maxium filesize so they can
// stop the upload before wasting time and bandwith
function get_max_size()
{
echo $this->config->item('upload_max_size');
}
function upload_history()
{
$this->muser->require_access();
$user = $this->muser->get_userid();
$this->load->library("MemcacheLibrary");
if (! $cached = $this->memcachelibrary->get("history_".$this->var->view_dir."_".$user)) {
$query = array();
$lengths = array();
// key: database field name; value: display name
$fields = array(
"id" => "ID",
"filename" => "Filename",
"mimetype" => "Mimetype",
"date" => "Date",
"hash" => "Hash",
"filesize" => "Size"
);
$this->data['title'] .= ' - Upload history';
foreach($fields as $length_key => $value) {
$lengths[$length_key] = mb_strlen($value);
}
$query = $this->db->query("
SELECT ".implode(",", array_keys($fields))."
FROM files
WHERE user = ?
ORDER BY date
", array($user))->result_array();
foreach($query as $key => $item) {
$query[$key]["date"] = date("r", $item["date"]);
$query[$key]["filesize"] = format_bytes($item["filesize"]);
if (is_cli_client()) {
// Keep track of longest string to pad plaintext output correctly
foreach($fields as $length_key => $value) {
$len = mb_strlen($query[$key][$length_key]);
if ($len > $lengths[$length_key]) {
$lengths[$length_key] = $len;
}
}
}
}
$total_size = $this->db->query("
SELECT sum(filesize) sum
FROM (
SELECT filesize
FROM files
WHERE user = ?
GROUP BY hash
) sub
", array($user))->row_array();
$this->data["query"] = $query;
$this->data["lengths"] = $lengths;
$this->data["fields"] = $fields;
$this->data["total_size"] = format_bytes($total_size["sum"]);
$cached = "";
$cached .= $this->load->view($this->var->view_dir.'/header', $this->data, true);
$cached .= $this->load->view($this->var->view_dir.'/upload_history', $this->data, true);
$cached .= $this->load->view($this->var->view_dir.'/footer', $this->data, true);
// disable for now. reenable if it causes too much load
//$this->memcachelibrary->set('history_'.$this->var->view_dir."_".$user, $cached, 42);
}
echo $cached;
}
function do_delete()
{
$this->muser->require_access();
$ids = $this->input->post("ids");
$errors = array();
$msgs = array();
$deleted_count = 0;
$total_count = 0;
if (!$ids) {
show_error("No IDs specified");
}
foreach ($ids as $id) {
$total_count++;
if (!$this->file_mod->id_exists($id)) {
$errors[] = "'$id' didn't exist anymore.";
continue;
}
if ($this->file_mod->delete_id($id)) {
$msgs[] = "'$id' has been removed.";
$deleted_count++;
} else {
$errors[] = "'$id' couldn't be deleted.";
}
}
$this->data["errors"] = $errors;
$this->data["msgs"] = $msgs;
$this->data["deleted_count"] = $deleted_count;
$this->data["total_count"] = $total_count;
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/deleted', $this->data);
$this->load->view($this->var->view_dir.'/footer', $this->data);
}
function delete()
{
$this->muser->require_access();
if (!is_cli_client()) {
echo "Not a listed cli client, please use the history to delete uploads.\n";
return;
}
$id = $this->uri->segment(3);
$this->data["id"] = $id;
if ($id && !$this->file_mod->id_exists($id)) {
$this->output->set_status_header(404);
echo "Unknown ID '$id'.\n";
return;
}
if ($this->file_mod->delete_id($id)) {
echo "$id has been deleted.\n";
} else {
echo "Deletion failed. Do you really own that file?\n";
}
}
// Handle pastes
function do_paste()
{
$content = $this->input->post("content");
$filesize = strlen($content);
$filename = "stdin";
if(!$content) {
$this->output->set_status_header(400);
$this->data["msg"] = "Nothing was pasted, content is empty.";
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/upload_error', $this->data);
$this->load->view($this->var->view_dir.'/footer');
return;
}
if ($filesize > $this->config->item('upload_max_size')) {
$this->output->set_status_header(413);
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/too_big');
$this->load->view($this->var->view_dir.'/footer');
return;
}
$id = $this->file_mod->new_id();
$hash = md5($content);
$folder = $this->file_mod->folder($hash);
file_exists($folder) || mkdir ($folder);
$file = $this->file_mod->file($hash);
file_put_contents($file, $content);
chmod($file, 0600);
$this->file_mod->add_file($hash, $id, $filename);
$this->_show_url($id, false);
}
// Handles uploaded files
function do_upload()
{
$extension = $this->input->post('extension');
if(!isset($_FILES['file']) || $_FILES['file']['error'] !== 0) {
$this->output->set_status_header(400);
$errors = array(
0=>"There is no error, the file uploaded with success",
1=>"The uploaded file exceeds the upload_max_filesize directive in php.ini",
2=>"The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form",
3=>"The uploaded file was only partially uploaded",
4=>"No file was uploaded",
6=>"Missing a temporary folder"
);
$this->data["msg"] = "Unknown error.";
if (isset($_FILES["file"])) {
$this->data["msg"] = $errors[$_FILES['file']['error']];
}
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/upload_error', $this->data);
$this->load->view($this->var->view_dir.'/footer');
return;
}
$filesize = filesize($_FILES['file']['tmp_name']);
if ($filesize > $this->config->item('upload_max_size')) {
$this->output->set_status_header(413);
$this->load->view($this->var->view_dir.'/header', $this->data);
$this->load->view($this->var->view_dir.'/too_big');
$this->load->view($this->var->view_dir.'/footer');
return;
}
$id = $this->file_mod->new_id();
$hash = md5_file($_FILES['file']['tmp_name']);
// work around a curl bug and allow the client to send the real filename base64 encoded
$filename = $this->input->post("filename");
if ($filename !== false) {
$filename = trim(base64_decode($filename, true), "\r\n\0\t\x0B");
}
// fall back if base64_decode failed
if ($filename === false) {
$filename = $_FILES['file']['name'];
}
$folder = $this->file_mod->folder($hash);
file_exists($folder) || mkdir ($folder);
$file = $this->file_mod->file($hash);
move_uploaded_file($_FILES['file']['tmp_name'], $file);
chmod($file, 0600);
$this->file_mod->add_file($hash, $id, $filename);
$this->_show_url($id, $extension);
}
function claim_id()
{
$this->muser->require_access();
$last_upload = $this->session->userdata("last_upload");
$id = $last_upload["id"];
$filedata = $this->file_mod->get_filedata($id);
if ($filedata["user"] != 0) {
show_error("Someone already owns '$id', can't reassign.");
}
$this->file_mod->adopt($id);
$this->session->unset_userdata("last_upload");
$this->_show_url($id, $last_upload["mode"]);
}
/* Functions below this comment can only be run via the CLI
* `php index.php file `
*/
// Removes old files
function cron()
{
if (!$this->input->is_cli_request()) return;
if ($this->config->item('upload_max_age') == 0) return;
$oldest_time = (time() - $this->config->item('upload_max_age'));
$oldest_session_time = (time() - $this->config->item("sess_expiration"));
$small_upload_size = $this->config->item('small_upload_size');
$query = $this->db->query('
SELECT hash, id, user
FROM files
WHERE date < ? OR (user = 0 AND date < ?)',
array($oldest_time, $oldest_session_time));
foreach($query->result_array() as $row) {
$file = $this->file_mod->file($row['hash']);
if (!file_exists($file)) {
$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
continue;
}
if ($row["user"] == 0 || filesize($file) > $small_upload_size) {
if (filemtime($file) < $oldest_time) {
unlink($file);
$this->db->query('DELETE FROM files WHERE hash = ?', array($row['hash']));
} else {
$this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($row['id']));
}
}
}
}
/* remove files without database entries */
function clean_stale_files()
{
if (!$this->input->is_cli_request()) return;
$upload_path = $this->config->item("upload_path");
$outer_dh = opendir($upload_path);
while (($dir = readdir($outer_dh)) !== false) {
if (!is_dir($upload_path."/".$dir) || $dir == ".." || $dir == ".") {
continue;
}
$dh = opendir($upload_path."/".$dir);
$empty = true;
while (($file = readdir($dh)) !== false) {
if ($file == ".." || $file == ".") {
continue;
}
$query = $this->db->query("SELECT hash FROM files WHERE hash = ? LIMIT 1", array($file))->row_array();
if (empty($query)) {
unlink($upload_path."/".$dir."/".$file);
} else {
$empty = false;
}
}
closedir($dh);
if ($empty) {
rmdir($upload_path."/".$dir);
}
}
closedir($outer_dh);
}
function nuke_id()
{
if (!$this->input->is_cli_request()) return;
$id = $this->uri->segment(3);
$file_data = $this->file_mod->get_filedata($id);
if (empty($file_data)) {
echo "unknown id \"$id\"\n";
return;
}
$hash = $file_data["hash"];
$this->db->query("
DELETE FROM files
WHERE hash = ?
", array($hash));
unlink($this->file_mod->file($hash));
echo "removed hash \"$hash\"\n";
}
function update_file_sizes()
{
if (!$this->input->is_cli_request()) return;
$chunk = 500;
$total = $this->db->count_all("files");
for ($limit = 0; $limit < $total; $limit += $chunk) {
$query = $this->db->query("
SELECT hash
FROM files
GROUP BY hash
LIMIT $limit, $chunk
")->result_array();
foreach ($query as $key => $item) {
$hash = $item["hash"];
$filesize = intval(filesize($this->file_mod->file($hash)));
$this->db->query("
UPDATE files
SET filesize = ?
WHERE hash = ?
", array($filesize, $hash));
}
}
}
}
# vim: set noet:
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