base64_encode

[Anon]

I am trying to allow users to upload information on my site and then have the file they uploaded sent to me via email. On my old ISP, this worked with no problem. On my new ISP it works but when the file reaches me it is corrupted. It is like the base64_encode changed between the two ISP's. They are both running 3.1x of PHP. Has anyone ran into this problem? Here is the code that works on the old ISP and sends a corrupted file on the new ISP:

$file = fopen($attach, "r");
$contents = fread($file, $attach_size);
$encoded_attach = chunk_split(base64_encode($contents));
fclose($file);

Thanks,
Carl

[Anon]

How exactly is the file corrupted ? Do you send it in the body or as an attached file ?

[Anon]

It is essentially an attachment. The email script creates a typical MIME email, nothing fancy. The part that gets me is if I run it on my local test box with PHP the script works perfect but when I run it on my ISP's server with PHP it won't work. (The file either arrives attached fine or attached as something strange.)

I really don't know how it is corrupted but if I attach a text file and have it encoded that will arrive just fine, no problems but if I attach any type of binary file by the time it reaches me in an email nothing will open it. I've tried images, zip files and what ever else I can get that isn't text.

It's as if encode on my ISP is broken.

My ISP uses PHP 3.0.16 (alpha?) and my local server uses PHP 3.0.12 (Linux).

[Anon]

Ok, here is some new information:

I decided to take a look at my file in the before and after transfer. It seems that either chunksplit or base64encode is adding slashes to the file. Here is a snip of the file,

Original File (before the send):
ÿØÿà JFIF H H ÿÛ C

",

Sent File (after sending it):
ÿØÿà\0JFIF\0\0H\0H\0\0ÿÛ\0C\0

\",

It seems that if you could take out all the slash information, it might look more like the original.

I am really frustrated here, it shouldn't be doing this and I have tried 10 different email scripts by different people and the results are always the same.

[Anon]

Well, I guess I should talk to myself some more!

set_magic_quotes_runtime(0);

This tiny bit of code was the problem. On my old ISP, this was set at 0 by default but on my new ISP it is set at 1.

You need to change this before using fread on a binary file such as an image, zip file, executable, etc. or it will add in those nasty slashes....

[Anon]

ok i want to do the same thing as you have here is my script i got but i am not shure where to put the bit you have dont in it!
############ <?
if($action1){ // if files have been uploaded, process them
?>
<?
set_time_limit(60); // make reasonably sure the script does not time out on large files
$path1 = AddSlashes("/home/sites/www.medicspro.com/uploads/");
// assign our path in a form PHP for Windows understands
for($i = 0; $i < 4; $i++){ // loop through the 4 possible files
switch($i){ // retrieve a file pointer from the temp directory
case 0:
$source = $file1;
$source_name = $file1_name;
break;
case 1:
$source = $file2;
$source_name = $file2_name;
break;
case 2:
$source = $file3;
$source_name = $file3_name;
break;
case 3:
$source = $file4;
$source_name = $file4_name;
break;
}
if(($source <> "none")&&($source <> "")){ // see if the file exists; non-existing file has name of "none"
if($error1 <> 1){ // no need to copy a file if directory not write-enabled
$dest = $path1.$source_name; // append file name to our path
if(copy($source,$dest)){ // copy the file from the temp directory to the upload directory, and test for success
echo "$source_name has been uploaded<br>\n";

$to = "[e-mail]";					// email admin about new uploaded file on server
$subject = "medicspro, $source_name file upload";
$body = "$source_name has beed uploaded ,check the uploads folder for the uploaded file,you will recieve a email for each file being uploaded.";
$from = "FROM: aidan <[e-mail]>";
mail ($to, $subject, $body, $from);

$to = "[e-mail]";
$subject = "medicspro, new user file";
$body = "ask aidan for the file just been uploaded by a new user";
$from = "FROM: aidan <[e-mail]>";
mail ($to, $subject, $body, $from);

    }
else {
echo "Upload directory not write-enabled\n"; 		// you need to write-enable the upload directory
$error1 = 1; 										// set flag
}
}
unlink($source);									// delete the file from the temp directory
}
}
?>

<br><a href="uploadfile.php">Back</a>
</font></p>
</body>

<?
}
else {												// else, prompt for the files
													// files will be uploaded into the server's temp directory for PHP
?>

<head>
<title>File Upload</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p><b>File Upload</b><br><br>
Browse for your file on your computer and when you have selected the file click  'upload' <br>
<form method="post" enctype="multipart/form-data" action="uploadfile.php">
<input type="hidden" name="MAX_FILE_SIZE" value="400000">
<input type="hidden" name="action1" value="1">
Browse for file <input type="file" name="file1" size="30"><br>
<input type="hidden" name="file2" size="30"><br>
<input type="hidden" name="file3" size="30"><br>
<input type="hidden" name="file4" size="30"><br>
<input type="submit" value="Upload">
</form>
</font></p><br><br>
<?
}
?>

###################
where do i add you script lines.

$file = fopen($attach, "r"); 

$contents = fread($file, $attach_size);
$encoded_attach = chunk_split(base64_encode($contents));
fclose($file);

thanks

[Anon]

Wow, Carl, well spotted. Thanks for posting this.