<?php
/*
------------------------------------------------------------
Class: myFat
MySQL Database as Fileserver - Block Structure
2004 by Mirko Mönninghoff
[email protected]
Version 0.2 alpha / !working!
Date: 04/17/2004
Last update: 04/18/2004
The class stores binary data - any kind of files in a mysql
database. It creates a virtual FAT and handles the data
like a simple filesystem. Perfect for people with less
webspace and one mysql database ;-)
------------------------------------------------------------
IF YOU DAMAGE SOMETHING WITH THIS CLASS, ITS NOT MY FAULT !!
YOU HAVE BEEN WARNED -NO WARRENTY- TEST IST AT YOUR OWN RISK
------------------------------------------------------------
If you like/use the script: Drop me some lines per mail !
Comments (positive) are welcome to !
Don't remove this header information !
------------------------------------------------------------
Installation:
Create a mysql database or decide for an already in use db.
Fill in the connection details ind the class header (see
below)
The database needs 2 tables:
SQL:
CREATE TABLE `myfat_cluster` (
`block_position` int(10) unsigned default '0',
`file_uid` int(10) unsigned default '0',
`block_data` longblob
) TYPE=MyISAM;
CREATE TABLE `myfat_fat` (
`file_name` varchar(255) NOT NULL default '',
`file_uid` int(11) NOT NULL auto_increment,
PRIMARY KEY (`file_uid`)
) TYPE=MyISAM AUTO_INCREMENT=1000 ;
For large files its good to adjust some php.ini settings:
-----------------------------------------------------------
my settings (in test envirement):
php.ini:
[...]
max_execution_time = 240
max_input_time = 240
memory_limit = 64M
post_max_size = 32M
file_uploads = On # this must be !
upload_max_filesize = 24M
[...]
------------------------------------------------------------
ToDo: (If i find some time)
Fields for more Fileinformation(Size,Blocks,Type,etc),
Folders,
------------------------------------------------------------
*/
class myFat {
var $DB_SERVER = "192.168.0.88"; # mysql server adress *adjust to your needs*
var $DB_USER = "myfat"; # database username *adjust to your needs*
var $DB_PASS = "password"; # database user password *adjust to your needs*
var $DB_NAME = "myfat"; # database name *adjust to your needs*
var $TABLE_FAT = "myfat_fat"; # the table for the vfat
var $TABLE_BLOCKS = "myfat_cluster"; # this table takes the data blocks
var $myScriptName = "index.php"; # the target page for all links - in this case the self page
var $DB_LINK = NULL;
var $BLOCKSIZE = 16384; # store 16K blocks
function myFat(){
/* Constructor */
$this->DB_LINK = @mysql_connect($this->DB_SERVER,$this->DB_USER,$this->DB_PASS) or die("SQL: Connect Error");
@mysql_select_db($this->DB_NAME) or die ("SQL: Database not found");
if (isset($_GET["load"])) $this->download($_GET["load"]);
if (isset($_GET["upload"])) $this->upload();
if (isset($_GET["delete"])) $this->delete($_GET["delete"]);
}
function listfiles(){
$sql = "select file_name,file_uid from $this->TABLE_FAT order by file_name";
$res = mysql_query($sql);
echo "<table cellpadding=4>";
echo "<tr><td>";
echo "Directory";
echo "</td><td>";
echo " ";
echo "</td></tr>";
while ($row = mysql_fetch_array($res)){
echo "<tr><td>";
echo "<a title='Click to download' href='$this->myScriptName?load=$row[file_uid]'>$row[file_name]</a><br>";
echo "</td><td>";
echo "<a title='Click to delete' href='$this->myScriptName?delete=$row[file_uid]'>[Delete]</a>";
echo "</td></tr>";
}
echo "</table>";
}
function upload(){
$file = $GLOBALS["filename"];
$file_name = $GLOBALS["filename_name"];
if (!file_exists($file)) return 0;
$this->save($file,$file_name);
}
function save($file,$file_name){
$file_size = filesize($file);
$block_counter = 0;
$sql = "insert into $this->TABLE_FAT (file_name) values ('$file_name')";
mysql_query ($sql);
$file_uid = mysql_insert_id($this->DB_LINK);
$handle = fopen ($file, "r");
while (!feof($handle)) {
$buffer = addslashes(fread($handle, $this->BLOCKSIZE));
$sql = "insert into $this->TABLE_BLOCKS (block_position,file_uid,block_data) values (".$block_counter++.",".$file_uid.",'$buffer')";
mysql_query ($sql);
}
fclose ($handle);
}
function delete($file_uid){
$sql = "delete from $this->TABLE_BLOCKS where file_uid='$file_uid'";
mysql_query($sql);
$sql = "delete from $this->TABLE_FAT where file_uid='$file_uid'";
mysql_query($sql);
}
function download($file_uid){
$sql = "select file_name from $this->TABLE_FAT where file_uid='$file_uid'";
$res = mysql_query($sql);
$row = mysql_fetch_array($res);
$file_name = urlencode($row["file_name"]);
$sql = "select * from $this->TABLE_BLOCKS where file_uid='$file_uid' order by block_position";
$res = mysql_query($sql);
header("Content-Type: x-type/subtype");
//header("Content-Length: ");
header("Content-Disposition: attachment; filename=$file_name");
while ($row = mysql_fetch_array($res)){
echo $row["block_data"];
}
exit;
}
}
?>
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