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-rw-r--r--application/models/file_mod.php419
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diff --git a/application/models/file_mod.php b/application/models/file_mod.php
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+<?php
+/*
+ * Copyright 2009-2010 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();
+ }
+
+ // Returns an unused ID
+ // TODO: make threadsafe
+ function new_id()
+ {
+ $id = $this->random_id(3,6);
+
+ if ($this->id_exists($id) || $id == 'file') {
+ 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
+ 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).'/'.$hash;
+ }
+
+ function hash_password($password)
+ {
+ return sha1($this->config->item('passwordsalt').$password);
+ }
+
+ // Returns the password submitted by the user
+ function get_password()
+ {
+ $password = $this->input->post('password');
+ if ($password !== false && $password !== "") {
+ return $this->hash_password($password);
+ } elseif (isset($_SERVER['PHP_AUTH_PW']) && $_SERVER['PHP_AUTH_PW'] !== '') {
+ return $this->hash_password($_SERVER['PHP_AUTH_PW']);
+ }
+ return 'NULL';
+ }
+
+ // Add a hash to the DB
+ // TODO: Should only update not insert; see new_id()
+ function add_file($hash, $id, $filename)
+ {
+ $mimetype = exec(FCPATH.'scripts/mimetype -b --orig-name '.escapeshellarg($filename).' '.escapeshellarg($this->file($hash)));
+ $query = $this->db->query('
+ INSERT INTO `files` (`hash`, `id`, `filename`, `password`, `date`, `mimetype`)
+ VALUES (?, ?, ?, ?, ?, ?)',
+ array($hash, $id, $filename, $this->get_password(), time(), $mimetype));
+ }
+
+ function show_url($id, $mode)
+ {
+ $data = array();
+ $redirect = false;
+
+ if ($mode) {
+ $data['url'] = site_url($id).'/'.$mode;
+ } else {
+ $data['url'] = site_url($id).'/';
+
+ $filedata = $this->get_filedata($id);
+ $file = $this->file($filedata['hash']);
+ $type = $filedata['mimetype'] ? $filedata['mimetype'] : exec(FCPATH.'scripts/mimetype -b --orig-name '.escapeshellarg($filedata['filename']).' '.escapeshellarg($file));
+ $mode = $this->mime2extension($type);
+ $mode = $this->filename2extension($filedata['filename']) ? $this->filename2extension($filedata['filename']) : $mode;
+
+ // If we detected a highlightable file redirect,
+ // otherwise show the URL because browsers would just show a DL dialog
+ if ($mode) {
+ $redirect = true;
+ }
+ }
+
+ if ($this->var->cli_client) {
+ echo $data['url']."\n";
+ } else {
+ if ($redirect) {
+ redirect($data['url']);
+ } else {
+ $this->load->view('file/header', $data);
+ $this->load->view('file/show_url', $data);
+ $this->load->view('file/footer', $data);
+ }
+ }
+ }
+
+ function non_existent()
+ {
+ $data["title"] = "Not Found";
+ $this->output->set_status_header(404);
+ $this->load->view('file/header', $data);
+ $this->load->view('file/non_existent', $data);
+ $this->load->view('file/footer', $data);
+ }
+
+ // download a given ID
+ // TODO: make smaller
+ function download()
+ {
+ $data = array();
+ $id = $this->uri->segment(1);
+ $mode = $this->uri->segment(2);
+
+ $filedata = $this->get_filedata($id);
+ $file = $this->file($filedata['hash']);
+
+ if (file_exists($file)) {
+ $oldest_time = (time()-$this->config->item('upload_max_age'));
+ if (filesize($file) > $this->config->item("small_upload_size") && $filedata["date"] < $oldest_time) {
+ if (filemtime($file) < $oldest_time) {
+ unlink($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));
+ }
+ $this->non_existent();
+ return;
+ }
+ // MODIFIED SINCE SUPPORT -- START
+ // helps to keep traffic low when reloading an image
+ $filedate = filectime($file);
+ $etag = strtolower(md5_file($file));
+ $modified = true;
+
+ // No need to check because different files have different IDs/hashes
+ if(isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
+ $modified = false;
+ }
+
+ if(isset($_SERVER['HTTP_IF_NONE_MATCH'])) {
+ $oldtag = trim(strtolower($_SERVER['HTTP_IF_NONE_MATCH']), '"');
+ if($oldtag == $etag) {
+ $modified = false;
+ } else {
+ $modified = true;
+ }
+ }
+ // MODIFIED SINCE SUPPORT -- END
+
+ if (!$modified) {
+ header("HTTP/1.1 304 Not Modified");
+ header('Etag: "'.$etag.'"');
+ } else {
+ $type = $filedata['mimetype'] ? $filedata['mimetype'] : exec(FCPATH.'scripts/mimetype -b --orig-name '.escapeshellarg($filedata['filename']).' '.escapeshellarg($file));
+
+ // /$mode at the end of the URL overwrites autodetection
+ if (!$mode && substr_count(ltrim($this->uri->uri_string(), "/"), '/') >= 1) {
+ $mode = $this->mime2extension($type);
+ $mode = $this->filename2extension($filedata['filename']) ? $this->filename2extension($filedata['filename']) : $mode;
+ }
+ $mode = $this->extension_aliases($mode);
+
+ // TODO: cleanup conditions
+ if ($mode && $mode != 'plain' && $mode != 'qr'
+ && $this->mime2extension($type)
+ && filesize($file) <= $this->config->item('upload_max_text_size')
+ ) {
+ $data['title'] = $filedata['filename'];
+ $data['raw_link'] = site_url($id);
+ $data['new_link'] = site_url();
+ $data['plain_link'] = site_url($id.'/plain');
+ $data['auto_link'] = site_url($id).'/';
+ $data['rmd_link'] = site_url($id.'/rmd');
+ $data['delete_link'] = site_url("file/delete/".$id);
+
+ header("Content-Type: text/html\n");
+ if ($mode) {
+ $data['current_highlight'] = $mode;
+ } else {
+ $data['current_highlight'] = $this->mime2extension($type);
+ }
+ if (filesize($file) > $this->config->item("small_upload_size")) {
+ $data['timeout'] = date("r", $filedata["date"]+$this->config->item("upload_max_age"));
+ } else {
+ $data['timeout'] = "never";
+ }
+ echo $this->load->view('file/html_header', $data, true);
+ $this->load->library("MemcacheLibrary");
+ if (! $cached = $this->memcachelibrary->get($filedata['hash'].'_'.$mode)) {
+ ob_start();
+ if ($mode == "rmd") {
+ echo '<td class="markdownrender">'."\n";
+ passthru('/usr/bin/perl /usr/bin/perlbin/vendor/Markdown.pl '.escapeshellarg($file));
+ } else {
+ echo '<td class="numbers"><pre>';
+ // generate line numbers (links)
+ passthru('/usr/bin/perl -ne \'print "<a href=\"#n$.\" class=\"no\" id=\"n$.\">$.</a>\n"\' '.escapeshellarg($file));
+ echo '</pre></td><td class="code">'."\n";
+ $this->load->library('geshi');
+ $this->geshi->initialize(array('set_language' => $mode, 'set_source' => file_get_contents($file), 'enable_classes' => 'true'));
+ echo $this->geshi->output();
+ }
+ $cached = ob_get_contents();
+ ob_end_clean();
+ $this->memcachelibrary->set($filedata['hash'].'_'.$mode, $cached, 100);
+ }
+ echo $cached;
+ echo $this->load->view('file/html_footer', $data, true);
+ } else {
+ if ($mode == 'plain') {
+ header("Content-Type: text/plain\n");
+ } elseif ($mode == "qr") {
+ header("Content-disposition: inline; filename=\"".$id."_qr.png\"\n");
+ header("Content-Type: image/png\n");
+ passthru('/usr/bin/qrencode -s 10 -o - '.escapeshellarg(site_url($id).'/'));
+ exit();
+ } else {
+ header("Content-Type: ".$type."\n");
+ }
+ header("Content-disposition: inline; filename=\"".$filedata['filename']."\"\n");
+ header("Content-Length: ".filesize($file)."\n");
+ header("Last-Modified: ".date('D, d M Y H:i:s', $filedate)." GMT");
+ header('Etag: "'.$etag.'"');
+ $fp = fopen($file,"r");
+ while (!feof($fp)) {
+ echo fread($fp,4096);
+ }
+ fclose($fp);
+ }
+ }
+ exit();
+ } else {
+ if (isset($filedata["hash"])) {
+ $this->db->query('DELETE FROM files WHERE hash = ?', array($filedata['hash']));
+ }
+ $this->non_existent();
+ }
+ }
+
+ private function unused_file($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)
+ {
+ $filedata = $this->get_filedata($id);
+ $password = $this->get_password();
+
+ if ($password == "NULL") {
+ return false;
+ }
+
+ if(!$this->id_exists($id)) {
+ return false;
+ }
+
+ $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($filedata['hash']));
+ }
+ return true;
+ }
+
+ // Generate a random ID
+ private function random_id($min_length, $max_length)
+ {
+ $random = '';
+ $char_list = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+ $char_list .= "abcdefghijklmnopqrstuvwxyz";
+ $char_list .= "1234567890";
+ $length = rand()%($max_length-$min_length) + $min_length;
+
+ for($i = 0; $i < $max_length; $i++) {
+ if (strlen($random) == $length) break;
+ $random .= substr($char_list,(rand()%(strlen($char_list))), 1);
+ }
+ return $random;
+ }
+
+ // Map MIME types to extensions needed for highlighting
+ function mime2extension($type)
+ {
+ $typearray = array(
+ 'text/plain' => 'text',
+ 'text/x-python' => 'python',
+ 'text/x-csrc' => 'c',
+ 'text/x-chdr' => 'c',
+ 'text/x-c++hdr' => 'c',
+ 'text/x-c++src' => 'cpp',
+ 'text/x-patch' => 'diff',
+ 'text/x-lua' => 'lua',
+ 'text/x-java' => 'java',
+ 'text/x-haskell' => 'haskell',
+ 'text/x-literate-haskell' => 'haskell',
+ 'text/x-subviewer' => 'bash',
+ 'text/x-makefile' => 'make',
+ #'text/x-log' => 'log',
+ 'text/html' => 'xml',
+ 'text/css' => 'css',
+ 'message/rfc822' => 'email',
+ #'image/svg+xml' => 'xml',
+ 'application/x-perl' => 'perl',
+ 'application/xml' => 'xml',
+ 'application/javascript' => 'javascript',
+ 'application/x-desktop' => 'text',
+ 'application/x-m4' => 'text',
+ 'application/x-awk' => 'text',
+ 'application/x-java' => 'java',
+ 'application/x-php' => 'php',
+ 'application/x-ruby' => 'ruby',
+ 'application/x-shellscript' => 'bash',
+ 'application/x-x509-ca-cert' => 'text',
+ 'application/mbox' => 'email',
+ 'application/x-genesis-rom' => 'text',
+ 'application/x-applix-spreadsheet' => 'actionscript'
+ );
+ if (array_key_exists($type, $typearray)) return $typearray[$type];
+
+ if (strpos($type, 'text/') === 0) return 'text';
+
+ # default
+ return false;
+ }
+
+ // Map special filenames to extensions
+ function filename2extension($name)
+ {
+ $namearray = array(
+ 'PKGBUILD' => 'bash',
+ '.vimrc' => 'vim'
+ );
+ if (array_key_exists($name, $namearray)) return $namearray[$name];
+
+ return false;
+ }
+
+ // Handle alias extensions
+ function extension_aliases($alias)
+ {
+ if ($alias === false) return false;
+ $aliasarray = array(
+ 'py' => 'python'
+ );
+ if (array_key_exists($alias, $aliasarray)) return $aliasarray[$alias];
+
+ return $alias;
+ }
+
+}
+
+# vim: set noet:
generated by cgit v1.2.3-24-g4f1b (git 2.32.0) at 2024-11-02 21:38:05 +0100