1 # Written by Matt Caswell for the OpenSSL project.
2 # ====================================================================
3 # Copyright (c) 1998-2015 The OpenSSL Project. All rights reserved.
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
9 # 1. Redistributions of source code must retain the above copyright
10 # notice, this list of conditions and the following disclaimer.
12 # 2. Redistributions in binary form must reproduce the above copyright
13 # notice, this list of conditions and the following disclaimer in
14 # the documentation and/or other materials provided with the
17 # 3. All advertising materials mentioning features or use of this
18 # software must display the following acknowledgment:
19 # "This product includes software developed by the OpenSSL Project
20 # for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
22 # 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 # endorse or promote products derived from this software without
24 # prior written permission. For written permission, please contact
25 # openssl-core@openssl.org.
27 # 5. Products derived from this software may not be called "OpenSSL"
28 # nor may "OpenSSL" appear in their names without prior written
29 # permission of the OpenSSL Project.
31 # 6. Redistributions of any form whatsoever must retain the following
33 # "This product includes software developed by the OpenSSL Project
34 # for use in the OpenSSL Toolkit (http://www.openssl.org/)"
36 # THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 # ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 # HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 # STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 # OF THE POSSIBILITY OF SUCH DAMAGE.
48 # ====================================================================
50 # This product includes cryptographic software written by Eric Young
51 # (eay@cryptsoft.com). This product includes software written by Tim
52 # Hudson (tjh@cryptsoft.com).
56 package TLSProxy::ServerHello;
58 use parent 'TLSProxy::Message';
67 $message_frag_lens) = @_;
69 my $self = $class->SUPER::new(
71 TLSProxy::Message::MT_SERVER_HELLO,
77 $self->{server_version} = 0;
79 $self->{session_id_len} = 0;
80 $self->{session} = "";
81 $self->{ciphersuite} = 0;
82 $self->{comp_meth} = 0;
83 $self->{extensions_len} = 0;
84 $self->{extensions_data} = "";
93 my ($server_version) = unpack('n', $self->data);
94 my $random = substr($self->data, $ptr, 32);
96 my $session_id_len = unpack('C', substr($self->data, $ptr));
98 my $session = substr($self->data, $ptr, $session_id_len);
99 $ptr += $session_id_len;
100 my $ciphersuite = unpack('n', substr($self->data, $ptr));
102 my $comp_meth = unpack('C', substr($self->data, $ptr));
104 my $extensions_len = unpack('n', substr($self->data, $ptr));
106 #For now we just deal with this as a block of data. In the future we will
108 my $extension_data = substr($self->data, $ptr);
110 if (length($extension_data) != $extensions_len) {
111 die "Invalid extension length\n";
114 while (length($extension_data) >= 4) {
115 my ($type, $size) = unpack("nn", $extension_data);
116 my $extdata = substr($extension_data, 4, $size);
117 $extension_data = substr($extension_data, 4 + $size);
118 $extensions{$type} = $extdata;
121 $self->server_version($server_version);
122 $self->random($random);
123 $self->session_id_len($session_id_len);
124 $self->session($session);
125 $self->ciphersuite($ciphersuite);
126 $self->comp_meth($comp_meth);
127 $self->extensions_len($extensions_len);
128 $self->extension_data(\%extensions);
130 $self->process_data();
132 print " Server Version:".$server_version."\n";
133 print " Session ID Len:".$session_id_len."\n";
134 print " Ciphersuite:".$ciphersuite."\n";
135 print " Compression Method:".$comp_meth."\n";
136 print " Extensions Len:".$extensions_len."\n";
139 #Perform any actions necessary based on the data we've seen
144 TLSProxy::Message->ciphersuite($self->ciphersuite);
147 #Reconstruct the on-the-wire message data following changes
148 sub set_message_contents
153 $data = pack('n', $self->server_version);
154 $data .= $self->random;
155 $data .= pack('C', $self->session_id_len);
156 $data .= $self->session;
157 $data .= pack('n', $self->ciphersuite);
158 $data .= pack('C', $self->comp_meth);
159 $data .= pack('n', $self->extensions_len);
160 foreach my $key (keys %{$self->extension_data}) {
161 my $extdata = ${$self->extension_data}{$key};
162 $data .= pack("n", $key);
163 $data .= pack("n", length($extdata));
170 #Read/write accessors
175 $self->{client_version} = shift;
177 return $self->{client_version};
183 $self->{random} = shift;
185 return $self->{random};
191 $self->{session_id_len} = shift;
193 return $self->{session_id_len};
199 $self->{session} = shift;
201 return $self->{session};
207 $self->{ciphersuite} = shift;
209 return $self->{ciphersuite};
215 $self->{comp_meth} = shift;
217 return $self->{comp_meth};
223 $self->{extensions_len} = shift;
225 return $self->{extensions_len};
231 $self->{extension_data} = shift;
233 return $self->{extension_data};