111 lines
2.5 KiB
Perl
111 lines
2.5 KiB
Perl
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# Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
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#
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# Licensed under the Apache License 2.0 (the "License"). You may not use
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# this file except in compliance with the License. You can obtain a copy
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# in the file LICENSE in the source distribution or at
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# https://www.openssl.org/source/license.html
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use strict;
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package TLSProxy::EncryptedExtensions;
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use vars '@ISA';
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push @ISA, 'TLSProxy::Message';
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sub new
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{
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my $class = shift;
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my ($server,
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$data,
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$records,
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$startoffset,
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$message_frag_lens) = @_;
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my $self = $class->SUPER::new(
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$server,
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TLSProxy::Message::MT_ENCRYPTED_EXTENSIONS,
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$data,
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$records,
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$startoffset,
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$message_frag_lens);
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$self->{extension_data} = "";
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return $self;
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}
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sub parse
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{
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my $self = shift;
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my $extensions_len = unpack('n', $self->data);
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if (!defined $extensions_len) {
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$extensions_len = 0;
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}
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my $extension_data;
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if ($extensions_len != 0) {
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$extension_data = substr($self->data, 2);
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if (length($extension_data) != $extensions_len) {
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die "Invalid extension length\n";
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}
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} else {
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if (length($self->data) != 2) {
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die "Invalid extension length\n";
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}
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$extension_data = "";
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}
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my %extensions = ();
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while (length($extension_data) >= 4) {
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my ($type, $size) = unpack("nn", $extension_data);
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my $extdata = substr($extension_data, 4, $size);
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$extension_data = substr($extension_data, 4 + $size);
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$extensions{$type} = $extdata;
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}
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$self->extension_data(\%extensions);
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print " Extensions Len:".$extensions_len."\n";
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}
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#Reconstruct the on-the-wire message data following changes
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sub set_message_contents
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{
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my $self = shift;
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my $data;
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my $extensions = "";
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foreach my $key (keys %{$self->extension_data}) {
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my $extdata = ${$self->extension_data}{$key};
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$extensions .= pack("n", $key);
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$extensions .= pack("n", length($extdata));
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$extensions .= $extdata;
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}
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$data = pack('n', length($extensions));
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$data .= $extensions;
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$self->data($data);
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}
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#Read/write accessors
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sub extension_data
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{
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my $self = shift;
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if (@_) {
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$self->{extension_data} = shift;
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}
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return $self->{extension_data};
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}
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sub set_extension
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{
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my ($self, $ext_type, $ext_data) = @_;
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$self->{extension_data}{$ext_type} = $ext_data;
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}
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sub delete_extension
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{
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my ($self, $ext_type) = @_;
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delete $self->{extension_data}{$ext_type};
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}
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1;
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