1 # Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
3 # Licensed under the OpenSSL license (the "License"). You may not use
4 # this file except in compliance with the License. You can obtain a copy
5 # in the file LICENSE in the source distribution or at
6 # https://www.openssl.org/source/license.html
10 package TLSProxy::ServerHello;
13 push @ISA, 'TLSProxy::Message';
22 $message_frag_lens) = @_;
24 my $self = $class->SUPER::new(
26 TLSProxy::Message::MT_SERVER_HELLO,
32 $self->{server_version} = 0;
34 $self->{session_id_len} = 0;
35 $self->{session} = "";
36 $self->{ciphersuite} = 0;
37 $self->{comp_meth} = 0;
38 $self->{extension_data} = "";
47 my ($server_version) = unpack('n', $self->data);
48 my $random = substr($self->data, $ptr, 32);
50 my $session_id_len = unpack('C', substr($self->data, $ptr));
52 my $session = substr($self->data, $ptr, $session_id_len);
53 $ptr += $session_id_len;
54 my $ciphersuite = unpack('n', substr($self->data, $ptr));
56 my $comp_meth = unpack('C', substr($self->data, $ptr));
58 my $extensions_len = unpack('n', substr($self->data, $ptr));
60 #For now we just deal with this as a block of data. In the future we will
62 my $extension_data = substr($self->data, $ptr);
64 if (length($extension_data) != $extensions_len) {
65 die "Invalid extension length\n";
68 while (length($extension_data) >= 4) {
69 my ($type, $size) = unpack("nn", $extension_data);
70 my $extdata = substr($extension_data, 4, $size);
71 $extension_data = substr($extension_data, 4 + $size);
72 $extensions{$type} = $extdata;
75 $self->server_version($server_version);
76 $self->random($random);
77 $self->session_id_len($session_id_len);
78 $self->session($session);
79 $self->ciphersuite($ciphersuite);
80 $self->comp_meth($comp_meth);
81 $self->extension_data(\%extensions);
83 $self->process_data();
85 print " Server Version:".$server_version."\n";
86 print " Session ID Len:".$session_id_len."\n";
87 print " Ciphersuite:".$ciphersuite."\n";
88 print " Compression Method:".$comp_meth."\n";
89 print " Extensions Len:".$extensions_len."\n";
92 #Perform any actions necessary based on the data we've seen
97 TLSProxy::Message->ciphersuite($self->ciphersuite);
100 #Reconstruct the on-the-wire message data following changes
101 sub set_message_contents
107 $data = pack('n', $self->server_version);
108 $data .= $self->random;
109 $data .= pack('C', $self->session_id_len);
110 $data .= $self->session;
111 $data .= pack('n', $self->ciphersuite);
112 $data .= pack('C', $self->comp_meth);
114 foreach my $key (keys %{$self->extension_data}) {
115 my $extdata = ${$self->extension_data}{$key};
116 $extensions .= pack("n", $key);
117 $extensions .= pack("n", length($extdata));
118 $extensions .= $extdata;
119 if ($key == TLSProxy::Message::EXT_DUPLICATE_EXTENSION) {
120 $extensions .= pack("n", $key);
121 $extensions .= pack("n", length($extdata));
122 $extensions .= $extdata;
126 $data .= pack('n', length($extensions));
127 $data .= $extensions;
131 #Read/write accessors
136 $self->{client_version} = shift;
138 return $self->{client_version};
144 $self->{random} = shift;
146 return $self->{random};
152 $self->{session_id_len} = shift;
154 return $self->{session_id_len};
160 $self->{session} = shift;
162 return $self->{session};
168 $self->{ciphersuite} = shift;
170 return $self->{ciphersuite};
176 $self->{comp_meth} = shift;
178 return $self->{comp_meth};
184 $self->{extension_data} = shift;
186 return $self->{extension_data};
190 my ($self, $ext_type, $ext_data) = @_;
191 $self->{extension_data}{$ext_type} = $ext_data;
195 my ($self, $ext_type) = @_;
196 delete $self->{extension_data}{$ext_type};