Program: CookieCutter
CookieCutter is a little program I wrote that
allows you to display, modify, and even delete
cookies. Since the banner-ad-tracking
firm DoubleClick probably keeps a lot of information on your browsing
habits, you want to befuddle them. After all, they are using a tiny
bit of storage on your hard disk to rack up per-click profits, giving
you nothing in return (directly, at least; obviously, ad sponsorship
keeps some web sites on the air). In Figure 18-10, I
am editing the cookie to, umm, “update” the personal
identity cookie to an invalid number (a lot of 9’s, and too
many digits). A few lines above that, you can see the
prefs.bgcolor cookie that I set to
“green.”

Figure 18-10. The CookieCutter display
I won’t show the CookieCutter source code
here as it doesn’t really relate to web techniques (it’s
a client-side application), but it’s included in the source
archive for the book. CookieCutter also assumes
your cookies are stored in the Netscape format; for the Microsoft
Explorer format, you’ll have to change the file-reading and
file-writing code.
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access