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::ServerKeyExchange;
22 use TLSProxy::NewSessionTicket;
39 proxy_addr => "localhost",
41 server_addr => "localhost",
55 ciphers => "AES128-SHA:TLS13-AES-128-GCM-SHA256",
61 # IO::Socket::IP is on the core module list, IO::Socket::INET6 isn't.
62 # However, IO::Socket::INET6 is older and is said to be more widely
63 # deployed for the moment, and may have less bugs, so we try the latter
64 # first, then fall back on the code modules. Worst case scenario, we
65 # fall back to IO::Socket::INET, only supports IPv4.
67 require IO::Socket::INET6;
68 my $s = IO::Socket::INET6->new(
77 $IP_factory = sub { IO::Socket::INET6->new(@_); };
81 require IO::Socket::IP;
82 my $s = IO::Socket::IP->new(
91 $IP_factory = sub { IO::Socket::IP->new(@_); };
94 $IP_factory = sub { IO::Socket::INET->new(@_); };
98 return bless $self, $class;
105 $self->{cipherc} = "";
107 $self->{record_list} = [];
108 $self->{message_list} = [];
109 $self->{clientflags} = "";
112 TLSProxy::Message->clear();
113 TLSProxy::Record->clear();
121 $self->{ciphers} = "AES128-SHA:TLS13-AES-128-GCM-SHA256";
122 $self->{serverflags} = "";
123 $self->{serverconnects} = 1;
124 $self->{serverpid} = 0;
152 open(STDOUT, ">", File::Spec->devnull())
153 or die "Failed to redirect stdout: $!";
154 open(STDERR, ">&STDOUT");
156 my $execcmd = $self->execute
157 ." s_server -no_comp -rev -engine ossltest -accept "
158 .($self->server_port)
159 ." -cert ".$self->cert." -cert2 ".$self->cert
160 ." -naccept ".$self->serverconnects;
161 if ($self->ciphers ne "") {
162 $execcmd .= " -cipher ".$self->ciphers;
164 if ($self->serverflags ne "") {
165 $execcmd .= " ".$self->serverflags;
169 $self->serverpid($pid);
171 return $self->clientstart;
180 open DEVNULL, ">", File::Spec->devnull();
181 $oldstdout = select(DEVNULL);
184 # Create the Proxy socket
185 my $proxaddr = $self->proxy_addr;
186 $proxaddr =~ s/[\[\]]//g; # Remove [ and ]
187 my $proxy_sock = $IP_factory->(
188 LocalHost => $proxaddr,
189 LocalPort => $self->proxy_port,
196 print "Proxy started on port ".$self->proxy_port."\n";
198 warn "Failed creating proxy socket (".$proxaddr.",".$self->proxy_port."): $!\n";
202 if ($self->execute) {
206 open(STDOUT, ">", File::Spec->devnull())
207 or die "Failed to redirect stdout: $!";
208 open(STDERR, ">&STDOUT");
211 if ($self->reneg()) {
216 my $execcmd = "echo ".$echostr." | ".$self->execute
217 ." s_client -engine ossltest -connect "
218 .($self->proxy_addr).":".($self->proxy_port);
219 if ($self->cipherc ne "") {
220 $execcmd .= " -cipher ".$self->cipherc;
222 if ($self->clientflags ne "") {
223 $execcmd .= " ".$self->clientflags;
229 # Wait for incoming connection from client
231 if(!($client_sock = $proxy_sock->accept())) {
232 warn "Failed accepting incoming connection: $!\n";
236 print "Connection opened\n";
238 # Now connect to the server
241 #We loop over this a few times because sometimes s_server can take a while
244 my $servaddr = $self->server_addr;
245 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
247 $server_sock = $IP_factory->(
248 PeerAddr => $servaddr,
249 PeerPort => $self->server_port,
256 #Some buggy IP factories can return a defined server_sock that hasn't
257 #actually connected, so we check peerport too
258 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
259 $server_sock->close() if defined($server_sock);
262 #Sleep for a short while
263 select(undef, undef, undef, 0.1);
265 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
269 } while (!$server_sock);
271 my $sel = IO::Select->new($server_sock, $client_sock);
273 my @handles = ($server_sock, $client_sock);
275 #Wait for either the server socket or the client socket to become readable
277 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
278 foreach my $hand (@ready) {
279 if ($hand == $server_sock) {
280 $server_sock->sysread($indata, 16384) or goto END;
281 $indata = $self->process_packet(1, $indata);
282 $client_sock->syswrite($indata);
283 } elsif ($hand == $client_sock) {
284 $client_sock->sysread($indata, 16384) or goto END;
285 $indata = $self->process_packet(0, $indata);
286 $server_sock->syswrite($indata);
295 print "Connection closed\n";
297 $server_sock->close();
300 #Closing this also kills the child process
301 $client_sock->close();
304 $proxy_sock->close();
309 $self->serverconnects($self->serverconnects - 1);
310 if ($self->serverconnects == 0) {
311 die "serverpid is zero\n" if $self->serverpid == 0;
312 print "Waiting for server process to close: "
313 .$self->serverpid."\n";
314 waitpid( $self->serverpid, 0);
321 my ($self, $server, $packet) = @_;
328 print "Received server packet\n";
330 print "Received client packet\n";
333 print "Packet length = ".length($packet)."\n";
334 print "Processing flight ".$self->flight."\n";
336 #Return contains the list of record found in the packet followed by the
337 #list of messages in those records
338 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
339 push @{$self->record_list}, @{$ret[0]};
340 push @{$self->{message_list}}, @{$ret[1]};
344 #Finished parsing. Call user provided filter here
345 if(defined $self->filter) {
346 $self->filter->($self);
349 #Reconstruct the packet
351 foreach my $record (@{$self->record_list}) {
352 #We only replay the records for the current flight
353 if ($record->flight != $self->flight) {
356 $packet .= $record->reconstruct_record($server);
359 $self->{flight} = $self->{flight} + 1;
361 print "Forwarded packet length = ".length($packet)."\n\n";
370 return $self->{execute};
375 return $self->{cert};
380 return $self->{debug};
385 return $self->{flight};
390 return $self->{record_list};
395 return $self->{success};
408 #Read/write accessors
413 $self->{proxy_addr} = shift;
415 return $self->{proxy_addr};
421 $self->{proxy_port} = shift;
423 return $self->{proxy_port};
429 $self->{server_addr} = shift;
431 return $self->{server_addr};
437 $self->{server_port} = shift;
439 return $self->{server_port};
445 $self->{filter} = shift;
447 return $self->{filter};
453 $self->{cipherc} = shift;
455 return $self->{cipherc};
461 $self->{ciphers} = shift;
463 return $self->{ciphers};
469 $self->{serverflags} = shift;
471 return $self->{serverflags};
477 $self->{clientflags} = shift;
479 return $self->{clientflags};
485 $self->{serverconnects} = shift;
487 return $self->{serverconnects};
489 # This is a bit ugly because the caller is responsible for keeping the records
490 # in sync with the updated message list; simply updating the message list isn't
491 # sufficient to get the proxy to forward the new message.
492 # But it does the trick for the one test (test_sslsessiontick) that needs it.
497 $self->{message_list} = shift;
499 return $self->{message_list};
505 $self->{serverpid} = shift;
507 return $self->{serverpid};
514 for (my $i = 0; $i < $length; $i++) {
533 $self->{reneg} = shift;
535 return $self->{reneg};