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",
52 ciphers => "AES128-SHA",
58 # IO::Socket::IP is on the core module list, IO::Socket::INET6 isn't.
59 # However, IO::Socket::INET6 is older and is said to be more widely
60 # deployed for the moment, and may have less bugs, so we try the latter
61 # first, then fall back on the code modules. Worst case scenario, we
62 # fall back to IO::Socket::INET, only supports IPv4.
64 require IO::Socket::INET6;
65 my $s = IO::Socket::INET6->new(
74 $IP_factory = sub { IO::Socket::INET6->new(@_); };
78 require IO::Socket::IP;
79 my $s = IO::Socket::IP->new(
88 $IP_factory = sub { IO::Socket::IP->new(@_); };
91 $IP_factory = sub { IO::Socket::INET->new(@_); };
95 return bless $self, $class;
102 $self->{cipherc} = "";
104 $self->{record_list} = [];
105 $self->{message_list} = [];
106 $self->{clientflags} = "";
108 TLSProxy::Message->clear();
109 TLSProxy::Record->clear();
117 $self->{ciphers} = "AES128-SHA";
118 $self->{serverflags} = "";
119 $self->{serverconnects} = 1;
120 $self->{serverpid} = 0;
148 open(STDOUT, ">", File::Spec->devnull())
149 or die "Failed to redirect stdout: $!";
150 open(STDERR, ">&STDOUT");
152 my $execcmd = $self->execute
153 ." s_server -no_comp -rev -engine ossltest -accept "
154 .($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: $!";
203 open(STDERR, ">&STDOUT");
206 if ($self->reneg()) {
211 my $execcmd = "echo ".$echostr." | ".$self->execute
212 ." s_client -engine ossltest -connect "
213 .($self->proxy_addr).":".($self->proxy_port);
214 if ($self->cipherc ne "") {
215 $execcmd .= " -cipher ".$self->cipherc;
217 if ($self->clientflags ne "") {
218 $execcmd .= " ".$self->clientflags;
224 # Wait for incoming connection from client
226 if(!($client_sock = $proxy_sock->accept())) {
227 warn "Failed accepting incoming connection: $!\n";
231 print "Connection opened\n";
233 # Now connect to the server
236 #We loop over this a few times because sometimes s_server can take a while
239 my $servaddr = $self->server_addr;
240 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
242 $server_sock = $IP_factory->(
243 PeerAddr => $servaddr,
244 PeerPort => $self->server_port,
251 #Some buggy IP factories can return a defined server_sock that hasn't
252 #actually connected, so we check peerport too
253 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
254 $server_sock->close() if defined($server_sock);
257 #Sleep for a short while
258 select(undef, undef, undef, 0.1);
260 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
264 } while (!$server_sock);
266 my $sel = IO::Select->new($server_sock, $client_sock);
268 my @handles = ($server_sock, $client_sock);
270 #Wait for either the server socket or the client socket to become readable
272 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
273 foreach my $hand (@ready) {
274 if ($hand == $server_sock) {
275 $server_sock->sysread($indata, 16384) or goto END;
276 $indata = $self->process_packet(1, $indata);
277 $client_sock->syswrite($indata);
278 } elsif ($hand == $client_sock) {
279 $client_sock->sysread($indata, 16384) or goto END;
280 $indata = $self->process_packet(0, $indata);
281 $server_sock->syswrite($indata);
290 print "Connection closed\n";
292 $server_sock->close();
295 #Closing this also kills the child process
296 $client_sock->close();
299 $proxy_sock->close();
304 $self->serverconnects($self->serverconnects - 1);
305 if ($self->serverconnects == 0) {
306 die "serverpid is zero\n" if $self->serverpid == 0;
307 print "Waiting for server process to close: "
308 .$self->serverpid."\n";
309 waitpid( $self->serverpid, 0);
310 die "exit code $? from server process\n" if $? != 0;
317 my ($self, $server, $packet) = @_;
324 print "Received server packet\n";
326 print "Received client packet\n";
329 print "Packet length = ".length($packet)."\n";
330 print "Processing flight ".$self->flight."\n";
332 #Return contains the list of record found in the packet followed by the
333 #list of messages in those records
334 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
335 push @{$self->record_list}, @{$ret[0]};
336 push @{$self->{message_list}}, @{$ret[1]};
340 #Finished parsing. Call user provided filter here
341 if(defined $self->filter) {
342 $self->filter->($self);
345 #Reconstruct the packet
347 foreach my $record (@{$self->record_list}) {
348 #We only replay the records for the current flight
349 if ($record->flight != $self->flight) {
352 $packet .= $record->reconstruct_record();
355 $self->{flight} = $self->{flight} + 1;
357 print "Forwarded packet length = ".length($packet)."\n\n";
366 return $self->{execute};
371 return $self->{cert};
376 return $self->{debug};
381 return $self->{flight};
386 return $self->{record_list};
391 return $self->{success};
404 #Read/write accessors
409 $self->{proxy_addr} = shift;
411 return $self->{proxy_addr};
417 $self->{proxy_port} = shift;
419 return $self->{proxy_port};
425 $self->{server_addr} = shift;
427 return $self->{server_addr};
433 $self->{server_port} = shift;
435 return $self->{server_port};
441 $self->{filter} = shift;
443 return $self->{filter};
449 $self->{cipherc} = shift;
451 return $self->{cipherc};
457 $self->{ciphers} = shift;
459 return $self->{ciphers};
465 $self->{serverflags} = shift;
467 return $self->{serverflags};
473 $self->{clientflags} = shift;
475 return $self->{clientflags};
481 $self->{serverconnects} = shift;
483 return $self->{serverconnects};
485 # This is a bit ugly because the caller is responsible for keeping the records
486 # in sync with the updated message list; simply updating the message list isn't
487 # sufficient to get the proxy to forward the new message.
488 # But it does the trick for the one test (test_sslsessiontick) that needs it.
493 $self->{message_list} = shift;
495 return $self->{message_list};
501 $self->{serverpid} = shift;
503 return $self->{serverpid};
510 for (my $i = 0; $i < $length; $i++) {
520 $self->{reneg} = shift;
522 return $self->{reneg};