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<?php
/*
* Copyright 2009-2010 Florian "Bluewind" Pritz <bluewind@server-speed.net>
*
* Licensed under GPLv3
* (see COPYING for full license text)
*
*/
class File_mod extends Model {
function __construct()
{
parent::Model();
}
function new_id()
{
$id = $this->random_id(3,6);
if ($this->id_exists($id)) {
return $this->new_id();
} else {
return $id;
}
}
function id_exists($id)
{
$sql = '
SELECT id
FROM `files`
WHERE `id` = ?
LIMIT 1';
$query = $this->db->query($sql, array($id));
if ($query->num_rows() == 1) {
return true;
} else {
return false;
}
}
function get_filedata($id)
{
$sql = '
SELECT hash,filename
FROM `files`
WHERE `id` = ?
LIMIT 1';
$query = $this->db->query($sql, array($id));
if ($query->num_rows() == 1) {
$return = $query->result_array();
return $return[0];
} else {
return false;
}
}
function folder($hash) {
return $this->config->item('upload_path').'/'.substr($hash, 0, 3);
}
function file($hash) {
return $this->folder($hash).'/'.$hash;
}
function hash_password($password)
{
return sha1($this->config->item('passwordsalt').$password);
}
private function unused_file($hash)
{
$sql = '
SELECT id
FROM `files`
WHERE `hash` = ?
LIMIT 1';
$query = $this->db->query($sql, array($hash));
if ($query->num_rows() == 0) {
return true;
} else {
return false;
}
}
function delete_id($id, $password)
{
$filedata = $this->get_filedata($id);
$password = $this->hash_password($password);
$sql = '
DELETE
FROM `files`
WHERE `id` = ?
AND password = ?
LIMIT 1';
$this->db->query($sql, array($id, $password));
if($this->id_exists($id)) {
return false;
}
if($this->unused_file($filedata['hash'])) {
unlink($this->file($filedata['hash']));
@rmdir($this->folder($filedata['hash']));
}
return true;
}
private function random_id($min_length, $max_length)
{
$random = '';
$char_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$char_list .= "abcdefghijklmnopqrstuvwxyz";
$char_list .= "1234567890";
for($i = 0; $i < $max_length; $i++) {
if (strlen($random) >= $min_length) {
if (rand()%2 == 1) {
break;
}
}
$random .= substr($char_list,(rand()%(strlen($char_list))), 1);
}
return $random;
}
function mime2extension($type)
{
$typearray = array(
'text/plain' => 'txt',
'text/x-python' => 'py',
'text/x-csrc' => 'c',
'text/x-chdr' => 'h',
'text/x-c++hdr' => 'h',
'text/x-c++src' => 'cpp',
'text/x-patch' => 'diff',
'text/x-lua' => 'lua',
'text/x-haskell' => 'hs',
'text/x-literate-haskell' => 'hs',
'text/x-subviewer' => 'sh',
#'text/x-makefile' => 'make',
#'text/x-log' => 'log',
'text/html' => 'html',
'text/css' => 'css',
'message/rfc822' => 'txt',
#'image/svg+xml' => 'xml',
'application/x-perl' => 'pl',
'application/xml' => 'xml',
'application/javascript' => 'js',
'application/x-desktop' => 'txt',
'application/x-m4' => 'txt',
'application/x-awk' => 'awk',
'application/x-java' => 'java',
'application/x-php' => 'php',
'application/x-ruby' => 'rb',
'application/x-shellscript' => 'sh',
'application/x-x509-ca-cert' => 'txt',
'application/mbox' => 'txt'
);
if (array_key_exists($type, $typearray)) return $typearray[$type];
if (strpos($type, 'text/') === 0) return 'txt';
# default
return false;
}
}
# vim: set ts=2 sw=2 et:
/* End of file file_mod.php */
/* Location: ./system/application/models/file_mod.php */
|
