[Privoxy-users] external-filter example

Thu Jul 23 05:44:26 UTC 2020

Lee wrote on 07/23/2020 05:15 AM:
> On 7/22/20, U.Mutlu <um at mutluit.com> wrote:
>> A working example for such an external-filter would be helpful.
>> Unfortunately I couldn't find any on the web :-(
>
> How about
>    http://config.privoxy.org/user-manual/actions-file.html#SERVER-HEADER-TAGGER
>
> Add this to your user.action:
> # Tag every request with the content type declared by the server
> {+server-header-tagger{content-type}}
> /
>
> # apply myTee filter to all text/html content
> { +external-filter{myTee} +force-text-mode}
> TAG:^text/html
>
> and the bit you have in user.filter should be something like
>
> EXTERNAL-FILTER: myTee make a copy of reveived text
> /usr/bin/tee myCopiedText
>
> maybe that will work?

Thx, finally got it working with these settings:

file my.filter:
EXTERNAL-FILTER: myTee make a copy of reveived text
/usr/bin/tee /tmp/myTee_Test.txt

file my.action:
{{alias}}
{ +server-header-tagger{content-type} +external-filter{myTee}}
/
TAG:^text/html

But the output is "meager": it always just says "301 Moved Permanently" with 
all URLs:

# cat /tmp/myTee_Test.txt
<html>
<head><title>301 Moved Permanently</title></head>
<body bgcolor="white">
<center><h1>301 Moved Permanently</h1></center>
<hr><center>CloudFront</center>
</body>
</html>

So, it seems the https-MITM isn't working in my build.
I had used old version (2.4.2) of mbedtls (that from Debian 8 repo).

Lee, you said https-MITM would work with the latest dev version.
Does it work due to the newer mbedtls version?
Or what else do I need to get the full content of the HTML file?

Btw, here are the external-filter examples in doc that was the motivation
for my above myTee filter (there the "cat" command etc. is used):
https://www.privoxy.org/user-manual/filter-file.html#EXTERNAL-FILTER-SYNTAX