diff options
Diffstat (limited to 'deps/openssl/openssl/util/perl/TLSProxy/ClientHello.pm')
| -rw-r--r-- | deps/openssl/openssl/util/perl/TLSProxy/ClientHello.pm | 242 |
1 files changed, 242 insertions, 0 deletions
diff --git a/deps/openssl/openssl/util/perl/TLSProxy/ClientHello.pm b/deps/openssl/openssl/util/perl/TLSProxy/ClientHello.pm new file mode 100644 index 0000000000..ec739d2970 --- /dev/null +++ b/deps/openssl/openssl/util/perl/TLSProxy/ClientHello.pm @@ -0,0 +1,242 @@ +# 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::ClientHello; + +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, + 1, + $data, + $records, + $startoffset, + $message_frag_lens); + + $self->{client_version} = 0; + $self->{random} = []; + $self->{session_id_len} = 0; + $self->{session} = ""; + $self->{ciphersuite_len} = 0; + $self->{ciphersuites} = []; + $self->{comp_meth_len} = 0; + $self->{comp_meths} = []; + $self->{extensions_len} = 0; + $self->{extension_data} = ""; + + return $self; +} + +sub parse +{ + my $self = shift; + my $ptr = 2; + my ($client_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 $ciphersuite_len = unpack('n', substr($self->data, $ptr)); + $ptr += 2; + my @ciphersuites = unpack('n*', substr($self->data, $ptr, + $ciphersuite_len)); + $ptr += $ciphersuite_len; + my $comp_meth_len = unpack('C', substr($self->data, $ptr)); + $ptr++; + my @comp_meths = unpack('C*', substr($self->data, $ptr, $comp_meth_len)); + $ptr += $comp_meth_len; + my $extensions_len = unpack('n', substr($self->data, $ptr)); + $ptr += 2; + #For now we just deal with this as a block of data. In the future we will + #want to parse this + my $extension_data = substr($self->data, $ptr); + + if (length($extension_data) != $extensions_len) { + die "Invalid extension length\n"; + } + my %extensions = (); + while (length($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; + } + + $self->client_version($client_version); + $self->random($random); + $self->session_id_len($session_id_len); + $self->session($session); + $self->ciphersuite_len($ciphersuite_len); + $self->ciphersuites(\@ciphersuites); + $self->comp_meth_len($comp_meth_len); + $self->comp_meths(\@comp_meths); + $self->extensions_len($extensions_len); + $self->extension_data(\%extensions); + + $self->process_extensions(); + + print " Client Version:".$client_version."\n"; + print " Session ID Len:".$session_id_len."\n"; + print " Ciphersuite len:".$ciphersuite_len."\n"; + print " Compression Method Len:".$comp_meth_len."\n"; + print " Extensions Len:".$extensions_len."\n"; +} + +#Perform any actions necessary based on the extensions we've seen +sub process_extensions +{ + my $self = shift; + my %extensions = %{$self->extension_data}; + + #Clear any state from a previous run + TLSProxy::Record->etm(0); + + if (exists $extensions{TLSProxy::Message::EXT_ENCRYPT_THEN_MAC}) { + TLSProxy::Record->etm(1); + } +} + +#Reconstruct the on-the-wire message data following changes +sub set_message_contents +{ + my $self = shift; + my $data; + my $extensions = ""; + + $data = pack('n', $self->client_version); + $data .= $self->random; + $data .= pack('C', $self->session_id_len); + $data .= $self->session; + $data .= pack('n', $self->ciphersuite_len); + $data .= pack("n*", @{$self->ciphersuites}); + $data .= pack('C', $self->comp_meth_len); + $data .= pack("C*", @{$self->comp_meths}); + + 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 client_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_len +{ + my $self = shift; + if (@_) { + $self->{ciphersuite_len} = shift; + } + return $self->{ciphersuite_len}; +} +sub ciphersuites +{ + my $self = shift; + if (@_) { + $self->{ciphersuites} = shift; + } + return $self->{ciphersuites}; +} +sub comp_meth_len +{ + my $self = shift; + if (@_) { + $self->{comp_meth_len} = shift; + } + return $self->{comp_meth_len}; +} +sub comp_meths +{ + my $self = shift; + if (@_) { + $self->{comp_meths} = shift; + } + return $self->{comp_meths}; +} +sub extensions_len +{ + my $self = shift; + if (@_) { + $self->{extensions_len} = shift; + } + return $self->{extensions_len}; +} +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; |