diff options
Diffstat (limited to 'openssl-1.1.0h/util/perl/TLSProxy/ServerHello.pm')
| -rw-r--r-- | openssl-1.1.0h/util/perl/TLSProxy/ServerHello.pm | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/openssl-1.1.0h/util/perl/TLSProxy/ServerHello.pm b/openssl-1.1.0h/util/perl/TLSProxy/ServerHello.pm new file mode 100644 index 0000000..79a8be9 --- /dev/null +++ b/openssl-1.1.0h/util/perl/TLSProxy/ServerHello.pm @@ -0,0 +1,210 @@ +# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. +# +# Licensed under the OpenSSL license (the "License"). You may not use +# this file except in compliance with the License. You can obtain a copy +# in the file LICENSE in the source distribution or at +# https://www.openssl.org/source/license.html + +use strict; + +package TLSProxy::ServerHello; + +use vars '@ISA'; +push @ISA, 'TLSProxy::Message'; + +sub new +{ + my $class = shift; + my ($server, + $data, + $records, + $startoffset, + $message_frag_lens) = @_; + + my $self = $class->SUPER::new( + $server, + TLSProxy::Message::MT_SERVER_HELLO, + $data, + $records, + $startoffset, + $message_frag_lens); + + $self->{server_version} = 0; + $self->{random} = []; + $self->{session_id_len} = 0; + $self->{session} = ""; + $self->{ciphersuite} = 0; + $self->{comp_meth} = 0; + $self->{extension_data} = ""; + + return $self; +} + +sub parse +{ + my $self = shift; + my $ptr = 2; + my ($server_version) = unpack('n', $self->data); + my $random = substr($self->data, $ptr, 32); + $ptr += 32; + my $session_id_len = unpack('C', substr($self->data, $ptr)); + $ptr++; + my $session = substr($self->data, $ptr, $session_id_len); + $ptr += $session_id_len; + my $ciphersuite = unpack('n', substr($self->data, $ptr)); + $ptr += 2; + my $comp_meth = unpack('C', substr($self->data, $ptr)); + $ptr++; + my $extensions_len = unpack('n', substr($self->data, $ptr)); + if (!defined $extensions_len) { + $extensions_len = 0; + } else { + $ptr += 2; + } + #For now we just deal with this as a block of data. In the future we will + #want to parse this + my $extension_data; + if ($extensions_len != 0) { + $extension_data = substr($self->data, $ptr); + + if (length($extension_data) != $extensions_len) { + die "Invalid extension length\n"; + } + } else { + if (length($self->data) != $ptr) { + die "Invalid extension length\n"; + } + $extension_data = ""; + } + my %extensions = (); + while (length($extension_data) >= 4) { + my ($type, $size) = unpack("nn", $extension_data); + my $extdata = substr($extension_data, 4, $size); + $extension_data = substr($extension_data, 4 + $size); + $extensions{$type} = $extdata; + } + + $self->server_version($server_version); + $self->random($random); + $self->session_id_len($session_id_len); + $self->session($session); + $self->ciphersuite($ciphersuite); + $self->comp_meth($comp_meth); + $self->extension_data(\%extensions); + + $self->process_data(); + + print " Server Version:".$server_version."\n"; + print " Session ID Len:".$session_id_len."\n"; + print " Ciphersuite:".$ciphersuite."\n"; + print " Compression Method:".$comp_meth."\n"; + print " Extensions Len:".$extensions_len."\n"; +} + +#Perform any actions necessary based on the data we've seen +sub process_data +{ + my $self = shift; + + TLSProxy::Message->ciphersuite($self->ciphersuite); +} + +#Reconstruct the on-the-wire message data following changes +sub set_message_contents +{ + my $self = shift; + my $data; + my $extensions = ""; + + $data = pack('n', $self->server_version); + $data .= $self->random; + $data .= pack('C', $self->session_id_len); + $data .= $self->session; + $data .= pack('n', $self->ciphersuite); + $data .= pack('C', $self->comp_meth); + + foreach my $key (keys %{$self->extension_data}) { + my $extdata = ${$self->extension_data}{$key}; + $extensions .= pack("n", $key); + $extensions .= pack("n", length($extdata)); + $extensions .= $extdata; + if ($key == TLSProxy::Message::EXT_DUPLICATE_EXTENSION) { + $extensions .= pack("n", $key); + $extensions .= pack("n", length($extdata)); + $extensions .= $extdata; + } + } + + $data .= pack('n', length($extensions)); + $data .= $extensions; + $self->data($data); +} + +#Read/write accessors +sub server_version +{ + my $self = shift; + if (@_) { + $self->{client_version} = shift; + } + return $self->{client_version}; +} +sub random +{ + my $self = shift; + if (@_) { + $self->{random} = shift; + } + return $self->{random}; +} +sub session_id_len +{ + my $self = shift; + if (@_) { + $self->{session_id_len} = shift; + } + return $self->{session_id_len}; +} +sub session +{ + my $self = shift; + if (@_) { + $self->{session} = shift; + } + return $self->{session}; +} +sub ciphersuite +{ + my $self = shift; + if (@_) { + $self->{ciphersuite} = shift; + } + return $self->{ciphersuite}; +} +sub comp_meth +{ + my $self = shift; + if (@_) { + $self->{comp_meth} = shift; + } + return $self->{comp_meth}; +} +sub extension_data +{ + my $self = shift; + if (@_) { + $self->{extension_data} = shift; + } + return $self->{extension_data}; +} +sub set_extension +{ + my ($self, $ext_type, $ext_data) = @_; + $self->{extension_data}{$ext_type} = $ext_data; +} +sub delete_extension +{ + my ($self, $ext_type) = @_; + delete $self->{extension_data}{$ext_type}; +} +1; |