Hi, I'm trying to create a proxy to edit images.

The problem is, the images comes in chunks and can't be worked with that way, not that I know of anyway.

I've tried setting the protocol to HTTP/1.0 in filters, but in wireshar I see the request still go as HTTP/1.1.(as do the responses)

I suspect that it is the proxies UA that is using HTTP/1.1 and the only way I found to change it is through environment variables, which didn't work.

Using the filter HTTP::Proxy::BodyFilter::Complete, I can access the whole image, not just chunks, but I can't edit it.

#!/usr/bin/perl

use strict;
use warnings;

use Env qw(PERL_LWP_USE_HTTP_10);

use HTTP::Proxy qw/:log/;
use HTTP::Headers;
use HTTP::Proxy::BodyFilter::complete;
use HTTP::Proxy::HeaderFilter::simple;
use HTTP::Proxy::BodyFilter::simple;
use String::Random;

#configuration
my $port = 8080;
my $proxyLogFile = "/tmp/sampleProxy.pl.log";
my $logMask = PROXY | STATUS | HEADERS | FILTERS | CONNECT;


#logging
open(LOG ,'>>'.$proxyLogFile);

my $bodyFilter = HTTP::Proxy::BodyFilter::simple->new(
    sub {
        my ( $self, $dataref, $message, $protocol, $buffer ) = @_;

        $message->protocol("HTTP/1.0");
        
        print "BODYFILTER\n";
        #print "Protocol: '".$protocol."'\n";
        print "MESSAGE:\n-------\n";
        print $message->as_string."-------\n";
        
        print "\n";
    }
);

my $imgFilter = HTTP::Proxy::BodyFilter::simple->new(
    sub {
        my ( $self, $dataref, $message, $protocol, $buffer ) = @_;

        my $rand = new String::Random;

        print "IMAGEFILTER\n";
        print $message->as_string."\n";
        print "--------\n\n";

        if(length($$dataref)){
            print "Image length is not 0, there is a image!\n";
            my $name = $message->header('Content-Type');
            $name =~ s/image\/(.+)$/$1/gi;
            $name = $rand->randregex('\d\d\d').'.'.$name;


            print "SAving image as $name\n";

            open IMAGE, ">>".$name or die "erro:$!\n";
            print IMAGE $$dataref;
            close IMAGE;


            print "Flipping Image\n";
            system("convert $name -flip $name");

            print "Sending Image\n";
            open IMAGE, $name or die "erro:$!\n";
            my $newImage = <IMAGE>;
            $$dataref = $newImage;
        }
    }
);

my $proxy = HTTP::Proxy->new;
$proxy->port($port);
$proxy->logfh(*LOG);
$proxy->logmask( $logMask ); #debug

#push filters
$proxy->push_filter( request => $bodyFilter );
$proxy->push_filter( mime => 'image/*',
    response => HTTP::Proxy::BodyFilter::complete->new, 
    response=>$imgFilter);

$proxy->agent->env_proxy;
$proxy->start;

close(LOG);
[download]

Any insight is appreciated.

---

---

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

• How do I compose an effective node title?
• How do I post a question effectively?
• Markup in the Monastery

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		&
	<		&lt;
	>		&gt;
	[		&#91;
	]		&#93;

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.