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<?php
/*
* Copyright 2014 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under AGPLv3
* (see COPYING for full license text)
*
*/
class Mmultipaste extends CI_Model {
function __construct()
{
$this->load->model("muser");
$this->load->model("mfile");
}
/**
* Returns an unused ID
*
* @param min minimal length of the resulting ID
* @param max maximum length of the resulting ID
*/
public function new_id($min = 3, $max = 6)
{
static $id_blacklist = NULL;
if ($id_blacklist == NULL) {
// This prevents people from being unable to access their uploads
// because of URL rewriting
$id_blacklist = scandir(FCPATH);
$id_blacklist[] = "file";
$id_blacklist[] = "user";
}
$max_tries = 100;
for ($try = 0; $try < $max_tries; $try++) {
$id = "m-".random_alphanum($min, $max);
// TODO: try to insert the id into file_groups instead of checking with
// id_exists (prevents race conditio)
if ($this->id_exists($id) || in_array($id, $id_blacklist)) {
continue;
}
$this->db->insert("multipaste", array(
"url_id" => $id,
"user_id" => $this->muser->get_userid(),
"date" => time(),
));
return $id;
}
throw new \exceptions\PublicApiException("file/new_id-try-limit", "Failed to find unused ID after $max_tries tries");
}
public function id_exists($id)
{
if (!$id) {
return false;
}
$sql = '
SELECT url_id
FROM '.$this->db->dbprefix.'multipaste
WHERE url_id = ?
LIMIT 1';
$query = $this->db->query($sql, array($id));
return $query->num_rows() == 1;
}
public function valid_id($id)
{
$files = $this->get_files($id);
if (count($files) === 0) {
return false;
}
foreach ($files as $file) {
if (!$this->mfile->valid_id($file["id"])) {
return false;
}
}
return true;
}
function adopt($id)
{
$userid = $this->muser->get_userid();
$this->db->set(array('user_id' => $userid ))
->where('url_id', $id)
->where('user_id', 0)
->update('multipaste');
return $this->db->affected_rows();
}
public function get_tarball_path($id)
{
return $this->config->item("upload_path")."/special/multipaste-tarballs/".substr(md5($id), 0, 3)."/$id.tar.gz";
}
public function delete_by_user($userid)
{
$query = $this->db->select("url_id")
->where("user_id", $userid)
->get("multipaste")->result_array();
$ids = array_map(function ($a) {return $a['url_id'];}, $query);
foreach ($ids as $id) {
$this->delete_id($id);
}
}
public function delete_id($id)
{
$this->db->where('url_id', $id)
->delete('multipaste');
$path = $this->get_tarball_path($id);
$f = new \service\storage($this->get_tarball_path($id));
$f->unlink();
return !$this->id_exists($id);
}
public function get_owner($id)
{
return $this->db->query("
SELECT user_id
FROM ".$this->db->dbprefix."multipaste
WHERE url_id = ?
", array($id))->row_array()["user_id"];
}
public function get_multipaste($id)
{
return $this->db->query("
SELECT url_id, user_id, date
FROM ".$this->db->dbprefix."multipaste
WHERE url_id = ?
", array($id))->row_array();
}
public function get_files($url_id)
{
$ret = array();
$query = $this->db->query("
SELECT mfm.file_url_id
FROM ".$this->db->dbprefix."multipaste_file_map mfm
JOIN ".$this->db->dbprefix."multipaste m ON m.multipaste_id = mfm.multipaste_id
WHERE m.url_id = ?
ORDER BY mfm.sort_order
", array($url_id))->result_array();
foreach ($query as $row) {
$filedata = $this->mfile->get_filedata($row["file_url_id"]);
$ret[] = $filedata;
}
return $ret;
}
public function get_multipaste_id($url_id)
{
$query = $this->db->query("
SELECT multipaste_id
FROM ".$this->db->dbprefix."multipaste
WHERE url_id = ?
", array($url_id));
if ($query->num_rows() > 0) {
return $query->row_array()["multipaste_id"];
}
return false;
}
}
|
