File System access from Firefox Extension

firefox-addon

Solution

Yes, see this page for examples.

Edit

XPCOM and so `nsIFile` are now legacy technologies :

Use of `OS.File` is preferred over the examples in this article. Only use these legacy interfaces if OS.File is not available to you.

You can find the new way to go here

Problem

Is it possbile to create a firefox extendsion to write to files in a windows file system ?

Original source