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
9 use POSIX ":sys_wait_h";
11 package TLSProxy::Proxy;
17 use TLSProxy::Message;
18 use TLSProxy::ClientHello;
19 use TLSProxy::ServerHello;
20 use TLSProxy::ServerKeyExchange;
21 use TLSProxy::NewSessionTicket;
36 proxy_addr => "localhost",
38 server_addr => "localhost",
51 ciphers => "AES128-SHA",
57 # IO::Socket::IP is on the core module list, IO::Socket::INET6 isn't.
58 # However, IO::Socket::INET6 is older and is said to be more widely
59 # deployed for the moment, and may have less bugs, so we try the latter
60 # first, then fall back on the code modules. Worst case scenario, we
61 # fall back to IO::Socket::INET, only supports IPv4.
63 require IO::Socket::INET6;
64 my $s = IO::Socket::INET6->new(
73 $IP_factory = sub { IO::Socket::INET6->new(@_); };
77 require IO::Socket::IP;
78 my $s = IO::Socket::IP->new(
87 $IP_factory = sub { IO::Socket::IP->new(@_); };
90 $IP_factory = sub { IO::Socket::INET->new(@_); };
94 return bless $self, $class;
101 $self->{cipherc} = "";
103 $self->{record_list} = [];
104 $self->{message_list} = [];
105 $self->{clientflags} = "";
107 TLSProxy::Message->clear();
108 TLSProxy::Record->clear();
116 $self->{ciphers} = "AES128-SHA";
117 $self->{serverflags} = "";
118 $self->{serverconnects} = 1;
119 $self->{serverpid} = 0;
146 open(STDOUT, ">", File::Spec->devnull())
147 or die "Failed to redirect stdout: $!";
148 open(STDERR, ">&STDOUT");
150 # TODO(TLS1.3): Temporarily disabled for TLS1.3...no shared cipher
151 # because the TLS1.3 ciphersuites are not compatible with ossltest
152 my $execcmd = $self->execute
153 ." s_server -no_tls1_3 -no_comp -rev -engine ossltest -accept "
154 .($self->server_port)
155 ." -cert ".$self->cert." -naccept ".$self->serverconnects;
156 if ($self->ciphers ne "") {
157 $execcmd .= " -cipher ".$self->ciphers;
159 if ($self->serverflags ne "") {
160 $execcmd .= " ".$self->serverflags;
164 $self->serverpid($pid);
166 return $self->clientstart;
175 open DEVNULL, ">", File::Spec->devnull();
176 $oldstdout = select(DEVNULL);
179 # Create the Proxy socket
180 my $proxaddr = $self->proxy_addr;
181 $proxaddr =~ s/[\[\]]//g; # Remove [ and ]
182 my $proxy_sock = $IP_factory->(
183 LocalHost => $proxaddr,
184 LocalPort => $self->proxy_port,
191 print "Proxy started on port ".$self->proxy_port."\n";
193 warn "Failed creating proxy socket (".$proxaddr.",".$self->proxy_port."): $!\n";
197 if ($self->execute) {
201 open(STDOUT, ">", File::Spec->devnull())
202 or die "Failed to redirect stdout: $!";
203 open(STDERR, ">&STDOUT");
205 my $execcmd = "echo test | ".$self->execute
206 ." s_client -engine ossltest -connect "
207 .($self->proxy_addr).":".($self->proxy_port);
208 if ($self->cipherc ne "") {
209 $execcmd .= " -cipher ".$self->cipherc;
211 if ($self->clientflags ne "") {
212 $execcmd .= " ".$self->clientflags;
218 # Wait for incoming connection from client
220 if(!($client_sock = $proxy_sock->accept())) {
221 warn "Failed accepting incoming connection: $!\n";
225 print "Connection opened\n";
227 # Now connect to the server
230 #We loop over this a few times because sometimes s_server can take a while
233 my $servaddr = $self->server_addr;
234 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
236 $server_sock = $IP_factory->(
237 PeerAddr => $servaddr,
238 PeerPort => $self->server_port,
245 #Some buggy IP factories can return a defined server_sock that hasn't
246 #actually connected, so we check peerport too
247 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
248 $server_sock->close() if defined($server_sock);
251 #Sleep for a short while
252 select(undef, undef, undef, 0.1);
254 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
258 } while (!$server_sock);
260 my $sel = IO::Select->new($server_sock, $client_sock);
262 my @handles = ($server_sock, $client_sock);
264 #Wait for either the server socket or the client socket to become readable
266 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
267 foreach my $hand (@ready) {
268 if ($hand == $server_sock) {
269 $server_sock->sysread($indata, 16384) or goto END;
270 $indata = $self->process_packet(1, $indata);
271 $client_sock->syswrite($indata);
272 } elsif ($hand == $client_sock) {
273 $client_sock->sysread($indata, 16384) or goto END;
274 $indata = $self->process_packet(0, $indata);
275 $server_sock->syswrite($indata);
284 print "Connection closed\n";
286 $server_sock->close();
289 #Closing this also kills the child process
290 $client_sock->close();
293 $proxy_sock->close();
298 $self->serverconnects($self->serverconnects - 1);
299 if ($self->serverconnects == 0) {
300 die "serverpid is zero\n" if $self->serverpid == 0;
301 print "Waiting for server process to close: "
302 .$self->serverpid."\n";
303 waitpid( $self->serverpid, 0);
310 my ($self, $server, $packet) = @_;
317 print "Received server packet\n";
319 print "Received client packet\n";
322 print "Packet length = ".length($packet)."\n";
323 print "Processing flight ".$self->flight."\n";
325 #Return contains the list of record found in the packet followed by the
326 #list of messages in those records
327 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
328 push @{$self->record_list}, @{$ret[0]};
329 push @{$self->{message_list}}, @{$ret[1]};
333 #Finished parsing. Call user provided filter here
334 if(defined $self->filter) {
335 $self->filter->($self);
338 #Reconstruct the packet
340 foreach my $record (@{$self->record_list}) {
341 #We only replay the records for the current flight
342 if ($record->flight != $self->flight) {
345 $packet .= $record->reconstruct_record();
348 $self->{flight} = $self->{flight} + 1;
350 print "Forwarded packet length = ".length($packet)."\n\n";
359 return $self->{execute};
364 return $self->{cert};
369 return $self->{debug};
374 return $self->{flight};
379 return $self->{record_list};
384 return $self->{success};
397 #Read/write accessors
402 $self->{proxy_addr} = shift;
404 return $self->{proxy_addr};
410 $self->{proxy_port} = shift;
412 return $self->{proxy_port};
418 $self->{server_addr} = shift;
420 return $self->{server_addr};
426 $self->{server_port} = shift;
428 return $self->{server_port};
434 $self->{filter} = shift;
436 return $self->{filter};
442 $self->{cipherc} = shift;
444 return $self->{cipherc};
450 $self->{ciphers} = shift;
452 return $self->{ciphers};
458 $self->{serverflags} = shift;
460 return $self->{serverflags};
466 $self->{clientflags} = shift;
468 return $self->{clientflags};
474 $self->{serverconnects} = shift;
476 return $self->{serverconnects};
478 # This is a bit ugly because the caller is responsible for keeping the records
479 # in sync with the updated message list; simply updating the message list isn't
480 # sufficient to get the proxy to forward the new message.
481 # But it does the trick for the one test (test_sslsessiontick) that needs it.
486 $self->{message_list} = shift;
488 return $self->{message_list};
494 $self->{serverpid} = shift;
496 return $self->{serverpid};
503 for (my $i = 0; $i < $length; $i++) {