File: /home/suanchonac/domains/suanchon.ac.th/private_html/queen/include/class/uploadFile.class.php
<?php
/********************************************************************************
- MemHT Portal -
Copyright (C) 2007-2008 by Miltenovik Manojlo
http://www.memht.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your opinion) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, see <http://www.gnu.org/licenses/> (GPLv2)
or write to the Free Software Foundation, Inc., 51 Franklin Street,
Fifth Floor, Boston, MA02110-1301, USA.
********************************************************************************/
class uploadFile {
//==============================
//DEFAULT CONFIGURATION
//==============================
//Upload path
var $path = "/";
//File max. size
var $max_size = 512000; //500Kb (in bytes)
//Mime: Accepted files
var $mime = array();
//Show errors
var $show_errors = true;
//Overwrite files with same name
var $overwrite = false;
//File field
var $field;
//==============================
//IMAGES CONFIGURATION
//==============================
//Mime: Images
var $mime_img = array('image/gif','image/pjpeg','image/jpeg','image/png','image/tiff','image/bmp');
//Max. image size
var $max_width = 9999999;
var $max_height = 9999999;
//Resize
var $resize = false;
var $resize_width = 100;
var $resize_height = 100;
//Thumb
var $createthumb = false;
var $path_thumb = "/";
var $thumb_suffix = "_thumb";
var $thumb_width = 100;
var $thumb_height = 100;
//Try to fix the chmod if the file/folder is not writable
var $fixchmod = true;
//==============================
//DO NOT EDIT
//==============================
var $FILES = array();
var $error;
var $filename;
var $thumbname;
var $selected = true;
var $jump = false;
//PHP5 Constructor
function __construct() {
$this->FILES = array();
$this->error = "";
}
//PHP4 Constructor
function uploadFile() {
$this->FILES = array();
$this->error = "";
}
//Check if the selected path is writable
function isWritable() {
if (!is_writable($this->path)) {
if ($this->fixchmod) {
if (!@chmod($this->path,0777)) {
}
} else {
$this->error = _FOLDER_NOT_WRITABLE_;
}
}
}
//Check if the file size exceed the limit
function checkFileSize() {
if ($this->FILES[$this->field]['size']>$this->max_size) {
$this->error = _ERROR_TOOBIG_;
}
}
//Executed only when the file is an image (mime_img)
function processImage() {
if (@in_array($this->FILES[$this->field]['type'],$this->mime_img)) {
$imagesize = @getimagesize($this->path.$this->filename);
if ($this->resize) {
$this->max_width = $this->resize_width;
$this->max_height = $this->resize_height;
}
if ($imagesize[0]>$this->max_width OR $imagesize[1]>$this->max_height) {
if ($this->resize) {
//Resize
//--------------------
if (extension_loaded('gd')) {
if ($imagesize[0] > $imagesize[1]) {
$ratio = ($this->resize_width/$imagesize[0]);
$new_width = round($imagesize[0]*$ratio);
$new_height = round($imagesize[1]*$ratio);
} else {
$ratio = ($this->resize_height/$imagesize[1]);
$new_width = round($imagesize[0]*$ratio);
$new_height = round($imagesize[1]*$ratio);
}
$image_p = @imagecreatetruecolor($new_width,$new_height);
switch ($this->FILES[$this->field]['type']) {
case "image/gif":
$image = @imagecreatefromgif($this->path.$this->filename);
break;
case "image/png":
$image = @imagecreatefrompng($this->path.$this->filename);
break;
case "image/bmp":
$image = @imagecreatefrombmp($this->path.$this->filename);
break;
default:
case "image/jpeg":
case "image/pjpeg":
$image = @imagecreatefromjpeg($this->path.$this->filename);
break;
}
imagecopyresampled($image_p,$image,0,0,0,0,$new_width,$new_height,$imagesize[0],$imagesize[1]);
imagejpeg($image_p,$this->path.$this->filename,100);
} else {
$this->error = _ERROR_GD_MISSING_.". "._CANNOT_RESIZE_IMAGE_;
@unlink($this->path.$this->filename);
}
//-------------------
} else {
$this->error = _ERROR_IMAGE_TOO_LARGE_;
@unlink($this->path.$this->filename);
}
}
if ($this->createthumb) {
//Thumb
//--------------------
if (extension_loaded('gd')) {
if ($imagesize[0] > $imagesize[1]) {
$ratio = ($this->thumb_width/$imagesize[0]);
$new_width = round($imagesize[0]*$ratio);
$new_height = round($imagesize[1]*$ratio);
} else {
$ratio = ($this->thumb_height/$imagesize[1]);
$new_width = round($imagesize[0]*$ratio);
$new_height = round($imagesize[1]*$ratio);
}
$image_p = @imagecreatetruecolor($new_width,$new_height);
switch ($this->FILES[$this->field]['type']) {
case "image/gif":
$image = @imagecreatefromgif($this->path.$this->filename);
break;
case "image/png":
$image = @imagecreatefrompng($this->path.$this->filename);
break;
case "image/bmp":
$image = @imagecreatefrombmp($this->path.$this->filename);
break;
default:
case "image/jpeg":
case "image/pjpeg":
$image = @imagecreatefromjpeg($this->path.$this->filename);
break;
}
$temp_name = $this->file_name($this->filename);
$temp_ext = $this->file_ext($this->filename);
$this->thumbname = $temp_name.$this->thumb_suffix.".".$temp_ext;
imagecopyresampled($image_p,$image,0,0,0,0,$new_width,$new_height,$imagesize[0],$imagesize[1]);
imagejpeg($image_p,$this->path_thumb.$this->thumbname,100);
} else {
$this->error = _ERROR_GD_MISSING_.". "._CANNOT_CREATE_THUMBNAIL_;
@unlink($this->path_thumb.$this->thumbname);
}
//-------------------
}
}
}
//Check if the file mime type is accepted
//If the mime array is empty, accept all files
function checkMime() {
if (sizeof($this->mime) AND !@in_array($this->FILES[$this->field]['type'],$this->mime)) {
$this->error = _ERROR_FILENOTPERMITTED_;
}
}
//Return the file mime
function getMime() {
return $this->FILES[$this->field]['type'];
}
//Check if the file has been uploaded or not
function isUploaded() {
if (!is_uploaded_file($this->FILES[$this->field]['tmp_name'])) {
echo $this->FILES[$this->field]['tmp_name'];
$this->error = _FILE_NOT_UPLOADED_;
}
}
//Check if there are selected files
function fileSelected() {
if (!isset($this->FILES[$this->field]) OR $this->filename=="") {
$this->error = _ERROR_NOFILESELECTED_;
$this->selected = false;
}
}
//Generate a random string
function random_str($length) {
$key = "";
$pattern = "1234567890abcdefghijklmnopqrstuvwxyz";
for($i=0;$i<$length;$i++) {
$key .= $pattern{rand(0,35)};
}
return $key;
}
//Return the file name
function file_name($name) {
$ext = strrchr($name, '.');
if ($ext != false) {
$name = substr($name, 0, -strlen($ext));
}
return $name;
}
//Return the file extension
function file_ext($name) {
return strtolower(end(explode('.',$name)));
}
//Print errors if $show_errors is set to true (default)
function print_error() {
@unlink($this->FILES[$this->field]['tmp_name']);
if ($this->show_errors) {
echo "<div style='margin: 2px; padding: 2px; border: 1px solid #999; background-color: #EEE; font-family: Verdana; font-size: 10px;'>".$this->error."</div>";
}
return false;
}
//Create a simple file upload form
function print_form($field,$action) {
echo "<form name='form_upload' method='post' action='$action' enctype='multipart/form-data'>\n";
echo "<input type='file' name='$field' size='20'> <input type='submit' name='Submit' value='Upload'>\n";
echo "</form>";
}
/*********************************************/
/* Fonction: ImageCreateFromBMP */
/* Author: DHKold */
/* Contact: admin@dhkold.com */
/* Date: The 15th of June 2005 */
/* Version: 2.0B */
/*********************************************/
function imagecreatefrombmp($filename) {
if (! $f1 = fopen($filename,"rb")) return FALSE;
$FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
if ($FILE['file_type'] != 19778) return FALSE;
$BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
'/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
'/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
$BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
$BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
$BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
$BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] = 4-(4*$BMP['decal']);
if ($BMP['decal'] == 4) $BMP['decal'] = 0;
$PALETTE = array();
if ($BMP['colors'] < 16777216)
{
$PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
}
$IMG = fread($f1,$BMP['size_bitmap']);
$VIDE = chr(0);
$res = imagecreatetruecolor($BMP['width'],$BMP['height']);
$P = 0;
$Y = $BMP['height']-1;
while ($Y >= 0)
{
$X=0;
while ($X < $BMP['width'])
{
if ($BMP['bits_per_pixel'] == 24)
$COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
elseif ($BMP['bits_per_pixel'] == 16)
{
$COLOR = unpack("n",substr($IMG,$P,2));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 8)
{
$COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 4)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 1)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7;
elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
else
return FALSE;
imagesetpixel($res,$X,$Y,$COLOR[1]);
$X++;
$P += $BMP['bytes_per_pixel'];
}
$Y--;
$P+=$BMP['decal'];
}
fclose($f1);
return $res;
}
//Upload the file :\
function upload() {
global $_FILES;
$this->error = "";
$this->FILES = $_FILES;
$this->filename = @str_replace("%","_",@urlencode($this->FILES[$this->field]['name']));
$this->fileSelected();
if ($this->error=="") { $this->isWritable(); }
if ($this->error=="") { $this->isUploaded(); }
if ($this->error=="") { $this->checkFileSize(); }
if ($this->error=="") { $this->checkMime(); }
if ($this->error=="") {
if (file_exists($this->path.$this->filename)) {
if ($this->overwrite) {
@unlink($this->path.$this->filename);
} else {
$temp_name = $this->file_name($this->filename);
$temp_ext = $this->file_ext($this->filename);
$this->filename = $temp_name."_".$this->random_str(5).".".$temp_ext;
}
}
}
if ($this->error=="") {
if (@copy($this->FILES[$this->field]['tmp_name'],$this->path.$this->filename)) {
$this->processImage();
if ($this->error=="") {
return $this->filename;
} else {
$this->print_error();
}
} else {
$this->error = "File not uploaded";
$this->print_error();
}
} else {
$this->print_error();
}
}
}
?>