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-rw-r--r--application/models/file_mod.php312
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diff --git a/application/models/file_mod.php b/application/models/file_mod.php
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+<?php
+/*
+ * Copyright 2009-2011 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under GPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class File_mod 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: