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| Current File : //usr/share/doc/libio-socket-ssl-perl/examples/ssl_mitm.pl |
#!/usr/bin/perl
# simple HTTPS proxy with SSL bridging, uses Net::PcapWriter to
# to log unencrypted traffic
my $listen = '127.0.0.1:8443'; # where to listen
my $connect = 'www.google.com:443'; # where to connect
use strict;
use warnings;
use IO::Socket::SSL;
use IO::Socket::SSL::Intercept;
use IO::Socket::SSL::Utils;
my ($proxy_cert,$proxy_key) = CERT_create(
CA => 1,
subject => { commonName => 'foobar' }
);
my $mitm = IO::Socket::SSL::Intercept->new(
proxy_cert => $proxy_cert,
proxy_key => $proxy_key,
);
my $listener = IO::Socket::INET->new(
LocalAddr => $listen,
Listen => 10,
Reuse => 1,
) or die "failed to create listener: $!";
while (1) {
# get connection from client
my $toc = $listener->accept or next;
# create new connection to server
my $tos = IO::Socket::SSL->new(
PeerAddr => $connect,
SSL_verify_mode => 1,
SSL_ca_path => '/etc/ssl/certs',
) or die "ssl connect to $connect failed: $!,$SSL_ERROR";
# clone cert from server
my ($cert,$key) = $mitm->clone_cert( $tos->peer_certificate );
# and upgrade connection to client to SSL with cloned cert
IO::Socket::SSL->start_SSL($toc,
SSL_server => 1,
SSL_cert => $cert,
SSL_key => $key,
) or die "failed to ssl upgrade: $SSL_ERROR";
# transfer data
my $readmask = '';
vec($readmask,fileno($tos),1) = 1;
vec($readmask,fileno($toc),1) = 1;
while (1) {
select( my $can_read = $readmask,undef,undef,undef ) >0 or die $!;
# try to read the maximum frame size of SSL to avoid issues
# with pending data
if ( vec($can_read,fileno($tos),1)) {
sysread($tos,my $buf,16384) or last;
print $toc $buf;
}
if ( vec($can_read,fileno($toc),1)) {
sysread($toc,my $buf,16384) or last;
print $tos $buf;
}
}
}
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