Hi all,
The new $NEST() command in beta 5 makes it easier to match a JavaScript
expression. Here's the latest version of my filter that makes all
Javascript cookies session only. I've been using it for a while, along
with similar filters for Set-Cookie headers and <meta> tags and so
far all cookies disappear when I close my browser. Let me know if you
run across a cookie that doesn't.
Copy and paste into the [Patterns] section of your config file.
>---- Begin copy --------------
Name = "Make All JavaScript Cookies Session Only"
Active = TRUE
URL = "(^$LST(CookieList))"
Limit = 256
Match = ".cookie(+|)1="
"((s|"*'|+|?|:"
"|$NEST((,))"
"|$NEST([,])"
"|[a-z0-9._]+"
")+)2 (;|(^?))"
Replace = ".cookie1=(2).replace(/; *expires=[^;]+/i,'');"
>---- End copy ----------------
If you want to know how it works, read on.
The match expression looks for ".cookie=" or ".cookie+=" followed by
various pieces of code usually found in JavaScript expressions.
.cookie(+|)1=
((
After the equal sign, there can be
s - Space
"*' - Strings
+ - Cancatenation operators
? and : - The shorthand conditional (if ? then : else)
$NEST((,)) - Stuff in parentheses
$NEST([,]) - Stuff in array element references
[a-z0-9._]+ - and variable names (function and array names, too)
The filter will match a chain of the above stuff and put it in 2.
)+)2
It all ends with either a semicolon or the end of the file.
(;|(^?))
The replace line uses the JavaScript replace() function to filter out
all the expires headers.
Replace = ".cookie1=(2).replace(/; *expires=[^;]+/i,'');"
I realized that string literals are also objects and have methods and
properties just like variables. The mess^H^H^H^H version I posted a
while ago chewed up CPU cycles because it tried to get the name of
the document object for use in the replace box. It's a whole lot
simpler now.
ScoJo
With regards from
Admin
