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::EncryptedExtensions;
21 use TLSProxy::Certificate;
22 use TLSProxy::CertificateVerify;
23 use TLSProxy::ServerKeyExchange;
24 use TLSProxy::NewSessionTicket;
30 my $ciphersuite = undef;
42 proxy_addr => "localhost",
44 server_addr => "localhost",
58 ciphers => "AES128-SHA:TLS13-AES-128-GCM-SHA256",
64 # IO::Socket::IP is on the core module list, IO::Socket::INET6 isn't.
65 # However, IO::Socket::INET6 is older and is said to be more widely
66 # deployed for the moment, and may have less bugs, so we try the latter
67 # first, then fall back on the code modules. Worst case scenario, we
68 # fall back to IO::Socket::INET, only supports IPv4.
70 require IO::Socket::INET6;
71 my $s = IO::Socket::INET6->new(
80 $IP_factory = sub { IO::Socket::INET6->new(@_); };
84 require IO::Socket::IP;
85 my $s = IO::Socket::IP->new(
94 $IP_factory = sub { IO::Socket::IP->new(@_); };
97 $IP_factory = sub { IO::Socket::INET->new(@_); };
101 return bless $self, $class;
108 $self->{cipherc} = "";
110 $self->{record_list} = [];
111 $self->{message_list} = [];
112 $self->{clientflags} = "";
114 $ciphersuite = undef;
116 TLSProxy::Message->clear();
117 TLSProxy::Record->clear();
125 $self->{ciphers} = "AES128-SHA:TLS13-AES-128-GCM-SHA256";
126 $self->{serverflags} = "";
127 $self->{serverconnects} = 1;
128 $self->{serverpid} = 0;
156 open(STDOUT, ">", File::Spec->devnull())
157 or die "Failed to redirect stdout: $!";
158 open(STDERR, ">&STDOUT");
160 my $execcmd = $self->execute
161 ." s_server -no_comp -rev -engine ossltest -accept "
162 .($self->server_port)
163 ." -cert ".$self->cert." -cert2 ".$self->cert
164 ." -naccept ".$self->serverconnects;
165 if ($self->ciphers ne "") {
166 $execcmd .= " -cipher ".$self->ciphers;
168 if ($self->serverflags ne "") {
169 $execcmd .= " ".$self->serverflags;
173 $self->serverpid($pid);
175 return $self->clientstart;
184 open DEVNULL, ">", File::Spec->devnull();
185 $oldstdout = select(DEVNULL);
188 # Create the Proxy socket
189 my $proxaddr = $self->proxy_addr;
190 $proxaddr =~ s/[\[\]]//g; # Remove [ and ]
191 my $proxy_sock = $IP_factory->(
192 LocalHost => $proxaddr,
193 LocalPort => $self->proxy_port,
200 print "Proxy started on port ".$self->proxy_port."\n";
202 warn "Failed creating proxy socket (".$proxaddr.",".$self->proxy_port."): $!\n";
206 if ($self->execute) {
210 open(STDOUT, ">", File::Spec->devnull())
211 or die "Failed to redirect stdout: $!";
212 open(STDERR, ">&STDOUT");
215 if ($self->reneg()) {
220 my $execcmd = "echo ".$echostr." | ".$self->execute
221 ." s_client -engine ossltest -connect "
222 .($self->proxy_addr).":".($self->proxy_port);
223 if ($self->cipherc ne "") {
224 $execcmd .= " -cipher ".$self->cipherc;
226 if ($self->clientflags ne "") {
227 $execcmd .= " ".$self->clientflags;
233 # Wait for incoming connection from client
235 if(!($client_sock = $proxy_sock->accept())) {
236 warn "Failed accepting incoming connection: $!\n";
240 print "Connection opened\n";
242 # Now connect to the server
245 #We loop over this a few times because sometimes s_server can take a while
248 my $servaddr = $self->server_addr;
249 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
251 $server_sock = $IP_factory->(
252 PeerAddr => $servaddr,
253 PeerPort => $self->server_port,
260 #Some buggy IP factories can return a defined server_sock that hasn't
261 #actually connected, so we check peerport too
262 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
263 $server_sock->close() if defined($server_sock);
266 #Sleep for a short while
267 select(undef, undef, undef, 0.1);
269 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
273 } while (!$server_sock);
275 my $sel = IO::Select->new($server_sock, $client_sock);
277 my @handles = ($server_sock, $client_sock);
279 #Wait for either the server socket or the client socket to become readable
281 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
282 foreach my $hand (@ready) {
283 if ($hand == $server_sock) {
284 $server_sock->sysread($indata, 16384) or goto END;
285 $indata = $self->process_packet(1, $indata);
286 $client_sock->syswrite($indata);
287 } elsif ($hand == $client_sock) {
288 $client_sock->sysread($indata, 16384) or goto END;
289 $indata = $self->process_packet(0, $indata);
290 $server_sock->syswrite($indata);
299 print "Connection closed\n";
301 $server_sock->close();
304 #Closing this also kills the child process
305 $client_sock->close();
308 $proxy_sock->close();
313 $self->serverconnects($self->serverconnects - 1);
314 if ($self->serverconnects == 0) {
315 die "serverpid is zero\n" if $self->serverpid == 0;
316 print "Waiting for server process to close: "
317 .$self->serverpid."\n";
318 waitpid( $self->serverpid, 0);
325 my ($self, $server, $packet) = @_;
332 print "Received server packet\n";
334 print "Received client packet\n";
337 print "Packet length = ".length($packet)."\n";
338 print "Processing flight ".$self->flight."\n";
340 #Return contains the list of record found in the packet followed by the
341 #list of messages in those records
342 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
343 push @{$self->record_list}, @{$ret[0]};
344 push @{$self->{message_list}}, @{$ret[1]};
348 #Finished parsing. Call user provided filter here
349 if(defined $self->filter) {
350 $self->filter->($self);
353 #Reconstruct the packet
355 foreach my $record (@{$self->record_list}) {
356 #We only replay the records for the current flight
357 if ($record->flight != $self->flight) {
360 $packet .= $record->reconstruct_record($server);
363 $self->{flight} = $self->{flight} + 1;
365 print "Forwarded packet length = ".length($packet)."\n\n";
374 return $self->{execute};
379 return $self->{cert};
384 return $self->{debug};
389 return $self->{flight};
394 return $self->{record_list};
399 return $self->{success};
412 #Read/write accessors
417 $self->{proxy_addr} = shift;
419 return $self->{proxy_addr};
425 $self->{proxy_port} = shift;
427 return $self->{proxy_port};
433 $self->{server_addr} = shift;
435 return $self->{server_addr};
441 $self->{server_port} = shift;
443 return $self->{server_port};
449 $self->{filter} = shift;
451 return $self->{filter};
457 $self->{cipherc} = shift;
459 return $self->{cipherc};
465 $self->{ciphers} = shift;
467 return $self->{ciphers};
473 $self->{serverflags} = shift;
475 return $self->{serverflags};
481 $self->{clientflags} = shift;
483 return $self->{clientflags};
489 $self->{serverconnects} = shift;
491 return $self->{serverconnects};
493 # This is a bit ugly because the caller is responsible for keeping the records
494 # in sync with the updated message list; simply updating the message list isn't
495 # sufficient to get the proxy to forward the new message.
496 # But it does the trick for the one test (test_sslsessiontick) that needs it.
501 $self->{message_list} = shift;
503 return $self->{message_list};
509 $self->{serverpid} = shift;
511 return $self->{serverpid};
518 for (my $i = 0; $i < $length; $i++) {
537 $self->{reneg} = shift;
539 return $self->{reneg};
546 $ciphersuite = shift;