chmod

Anon

Hi there

I have a page where i upload stuff to my server

As it is now i have chmod to 777 in WS FTP
But from what i understand that is not very safe. What i want to do is to include something on the upload page which change the mode to 777 when uploading and then returns it to normal again.

Can anyone help me?

Anon

You are correct about the safety issue. I am experiencing the same problem. I think the workaround is to bury the images folder a few levels deep.

I don't know if there is a way to execute a chmod command on the fly and then change after the function has been executed.

If you find anything let me know.

Mark

Anon

Yea I will

webnick

why chmod 777 then back?
you can set the permissions when you make a dir or file, or change the permissions of the uploaded file by writing chmod() into your upload function.

mkdir($thumb, 0755)
chmod ($thumb."/".$image, 0755);

hope that helps.

Anon

Thanks Nick.

What about changing the permissions on the fly? It looks like you set the permissions to an existing file.

Mark

webnick

if i follow you, you could change the permissions of anything being generated or handeled by your script, assuming your script was in a group with permission.....

so,
<?php
$pic=ImageCreate(600,600);
chmod ("$pic", 0777);
echo "<img src=\"$pic\" width=\"600\" height=\"600\">";
?>

this script makes the image, then gives everyone read, write, execute permissions on it. If you tried the following:

<?php if (isset($delete_file) {
imagedestroy ($file_to_delete); } ?>

and the $file_to_delete had an "owner" in a different group then your script, you would only be able to delete it if the "other" permissions were @ least read-write.

reading your first post again, i still don't see why you might want to change the permissions back and forth but, i hope that helps.

chmod can actually be a bear to understand. following are a couple good links for unix file systems:

http://dapsas.weizmann.ac.il/UNIXhelp/Pages/tasks/access_permissions.html

http://www.developerschoice.net/faq/unix/chmod.html

nick