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Pear (HTTP_Upload) - Exceptable File Types

Posted on 2007-11-26
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Last Modified: 2008-02-01
How can I have this Pear (HTTP_Upload) library only allow image files (ex. jpegs, gifs, bitmap, ect.)?  Please use the snippet to demonstrate.  Thanks in advance for your help.
<?php
require 'HTTP/Upload.php';
//$lang = "en";
$upload = new HTTP_Upload("en");
$files = $upload->getFiles();
$_SESSION['path'] = "../uploads/";
foreach($files as $file){
    if (PEAR::isError($file)) {
        echo $file->getMessage();
    }
    if ($file->isValid()) {
        $file->setName("uniq");
        $dest_name = $file->moveTo("../uploads/");
        if (PEAR::isError($dest_name)) {
            echo $dest_name->getMessage();
        }
        $real = $file->getProp("real");
        $name = $file->getProp("name");
    } elseif ($file->isMissing()) {
        //echo "No file was provided.";
    } elseif ($file->isError()) {
        echo $file->errorMsg();
    }
    if (!empty($real)) {
          $_SESSION['fid'][] = insert_files($name, $real);
          $_SESSION['name'][] = $name;
          $_SESSION['real'][] = $real;
        echo "<br />";
        print_r($_SESSION);
    }
}
?>

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Question by:taynet29
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3 Comments
 
LVL 10

Expert Comment

by:wildzero
ID: 20354743
http://www.scanit.be/uploads/php-file-upload.pdf
Have a look at that.
Just checking the file extension is not enough, have a read of that pdf - it provides examples and reasons why.

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LVL 21

Expert Comment

by:nizsmo
ID: 20355582
I am not sure exactly how your script works, however the below script is a simple extension filtering script which (at the moment) does nothing apart from echoing out the filtered files. Maybe you can implement and make use of it in your script?
Remember you have to change your extensions allwed and the file path accordingly.
Sorry I do not remember who wrote the script originally, but I did modify parts of it to suite my needs.
<?php
$image_file_path = 'images/'; // Directory of your Images
$regpattern = '.jpg$|.jpeg$|.png$|.tif$|.gif$'; // Extensions allowed
$d = dir($image_file_path) or die("Wrong path: $image_file_path");
 
while (false !== ($entry = $d->read())) 
{
	if($entry != '.' && $entry != '..' && !is_dir($dir.$entry) && ereg($regpattern,$entry))
	{
		$Images[] = $entry;
	}
}
$d->close();
$i=0;
 
while($i<count($Images))
{
	echo "<div><img src=\"" . $image_file_path . $Images[$i] . "\"/></div>"; // Outputs all the images into the webpage betwee DIV tags.
	$i++;
}
 
?>

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Accepted Solution

by:
wildzero earned 500 total points
ID: 20356782
Should be noted like my first comment, simply filtering by extension isn't the best way.
View the pdf (which explains why).

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