<?php /* * Copyright 2009-2011 Florian "Bluewind" Pritz <bluewind@server-speed.net> * * Licensed under GPLv3 * (see COPYING for full license text) * */ class Mfile extends CI_Model { function __construct() { parent::__construct(); $this->load->model("muser"); } // Returns an unused ID function new_id() { $id = random_alphanum(3,6); if ($this->id_exists($id) || $id == 'file' || $id == 'user') { return $this->new_id(); } else { return $id; } } function id_exists($id) { if(!$id) { return false; } $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, mimetype, date, user, filesize 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; } } // return the folder in which the file with $hash is stored function folder($hash) { return $this->config->item('upload_path').'/'.substr($hash, 0, 3); } // Returns the full path to the file with $hash function file($hash) { return $this->folder($hash).'/'.$hash; } // Add a hash to the DB function add_file($hash, $id, $filename) { $userid = $this->muser->get_userid(); $mimetype = exec("perl ".FCPATH.'scripts/mimetype '.escapeshellarg($filename).' '.escapeshellarg($this->file($hash))); $filesize = filesize($this->file($hash)); $query = $this->db->query(' INSERT INTO `files` (`hash`, `id`, `filename`, `user`, `date`, `mimetype`, `filesize`) VALUES (?, ?, ?, ?, ?, ?, ?)', array($hash, $id, $filename, $userid, time(), $mimetype, $filesize)); } function adopt($id) { $userid = $this->muser->get_userid(); $this->db->query(" UPDATE files SET user = ? WHERE id = ? ", array($userid, $id)); } // remove old/invalid/broken IDs function valid_id($id) { $filedata = $this->get_filedata($id); if (!$filedata) { return false; } $file = $this->file($filedata['hash']); if (!file_exists($file)) { if (isset($filedata["hash"])) { $this->db->query('DELETE FROM files WHERE hash = ?', array($filedata['hash'])); } return false; } // small files don't expire if (filesize($file) <= $this->config->item("small_upload_size")) { return true; } // files older than this should be removed $remove_before = (time()-$this->config->item('upload_max_age')); if ($filedata["date"] < $remove_before) { // if the file has been uploaded multiple times the mtime is the time // of the last upload if (filemtime($file) < $remove_before) { unlink($file); $this->db->query('DELETE FROM files WHERE hash = ?', array($filedata['hash'])); } else { $this->db->query('DELETE FROM files WHERE id = ? LIMIT 1', array($id)); } return false; } return true; } function get_timeout_string($id) { $filedata = $this->get_filedata($id); $file = $this->file($filedata["hash"]); if (filesize($file) > $this->config->item("small_upload_size")) { return date("r", $filedata["date"] + $this->config->item("upload_max_age")); } else { return "unknown"; } } private function unused_file($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) { $this->muser->require_access(); $filedata = $this->get_filedata($id); $userid = $this->muser->get_userid(); if(!$this->id_exists($id)) { return false; } $sql = ' DELETE FROM `files` WHERE `id` = ? AND user = ? LIMIT 1'; $this->db->query($sql, array($id, $userid)); if($this->id_exists($id)) { return false; } if($this->unused_file($filedata['hash'])) { unlink($this->file($filedata['hash'])); @rmdir($this->folder($filedata['hash'])); } return true; } function should_highlight($type) { if ($this->mime2mode($type)) return true; return false; } // Allow certain types to be highlight without doing it automatically function can_highlight($type) { $typearray = array( 'image/svg+xml', ); if (in_array($type, $typearray)) return true; if ($this->mime2mode($type)) return true; return false; } // Return the mode that should be used for highlighting function get_highlight_mode($type, $filename) { $mode = $this->mime2mode($type); // filename modes overwrite mime type mappings $filename_mode = $this->filename2mode($filename); if ($filename_mode) { return $filename_mode; } return $mode; } // Map MIME types to modes needed for highlighting private function mime2mode($type) { $typearray = array( 'text/plain' => 'text', 'text/plain-ascii' => 'ascii', 'text/x-python' => 'python', 'text/x-csrc' => 'c', 'text/x-chdr' => 'c', 'text/x-c++hdr' => 'c', 'text/x-c++src' => 'cpp', 'text/x-patch' => 'diff', 'text/x-lua' => 'lua', 'text/x-java' => 'java', 'text/x-haskell' => 'haskell', 'text/x-literate-haskell' => 'haskell', 'text/x-subviewer' => 'bash', 'text/x-scheme' => 'scheme', 'text/x-makefile' => 'make', #'text/x-log' => 'log', 'text/html' => 'xml', 'text/css' => 'css', 'text/x-ocaml' => 'ocaml', 'message/rfc822' => 'email', #'image/svg+xml' => 'xml', 'application/x-perl' => 'perl', 'application/xml' => 'xml', 'application/xml-dtd' => "xml", 'application/xslt+xml' => "xml", 'application/javascript' => 'javascript', 'application/smil' => 'ocaml', 'application/x-desktop' => 'text', 'application/x-m4' => 'text', 'application/x-awk' => 'text', 'application/x-fluid' => 'text', 'application/x-java' => 'java', 'application/x-php' => 'php', 'application/x-ruby' => 'ruby', 'application/x-shellscript' => 'bash', 'application/x-x509-ca-cert' => 'text', 'application/mbox' => 'email', 'application/x-genesis-rom' => 'text', 'application/x-applix-spreadsheet' => 'actionscript' ); if (array_key_exists($type, $typearray)) return $typearray[$type]; if (strpos($type, 'text/') === 0) return 'text'; # default return false; } // Map special filenames to modes private function filename2mode($name) { $namearray = array( 'PKGBUILD' => 'bash', '.vimrc' => 'vim' ); if (array_key_exists($name, $namearray)) return $namearray[$name]; return false; } // Handle mode aliases function resolve_mode_alias($alias) { if ($alias === false) return false; $aliasarray = array( 'py' => 'python', 'sh' => 'bash', 's' => 'asm', 'pl' => 'perl' ); if (array_key_exists($alias, $aliasarray)) return $aliasarray[$alias]; return $alias; } } # vim: set noet: