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;
22 use Time::HiRes qw/usleep/;
37 proxy_addr => "localhost",
39 server_addr => "localhost",
54 ciphers => "AES128-SHA",
60 # IO::Socket::IP is on the core module list, IO::Socket::INET6 isn't.
61 # However, IO::Socket::INET6 is older and is said to be more widely
62 # deployed for the moment, and may have less bugs, so we try the latter
63 # first, then fall back on the code modules. Worst case scenario, we
64 # fall back to IO::Socket::INET, only supports IPv4.
66 require IO::Socket::INET6;
67 my $s = IO::Socket::INET6->new(
76 $IP_factory = sub { IO::Socket::INET6->new(@_); };
80 require IO::Socket::IP;
81 my $s = IO::Socket::IP->new(
90 $IP_factory = sub { IO::Socket::IP->new(@_); };
93 $IP_factory = sub { IO::Socket::INET->new(@_); };
97 # Create the Proxy socket
98 my $proxaddr = $self->{proxy_addr};
99 $proxaddr =~ s/[\[\]]//g; # Remove [ and ]
101 LocalHost => $proxaddr,
102 LocalPort => $self->{proxy_port},
106 push @proxyargs, ReuseAddr => 1
107 unless $^O eq "MSWin32";
108 $self->{proxy_sock} = $IP_factory->(@proxyargs);
110 if ($self->{proxy_sock}) {
111 print "Proxy started on port ".$self->{proxy_port}."\n";
113 warn "Failed creating proxy socket (".$proxaddr.",".$self->{proxy_port}."): $!\n";
116 return bless $self, $class;
123 $self->{proxy_sock}->close() if $self->{proxy_sock};
130 $self->{cipherc} = "";
132 $self->{record_list} = [];
133 $self->{message_list} = [];
134 $self->{clientflags} = "";
135 $self->{clientpid} = 0;
137 TLSProxy::Message->clear();
138 TLSProxy::Record->clear();
146 $self->{ciphers} = "AES128-SHA";
147 $self->{serverflags} = "";
148 $self->{serverconnects} = 1;
149 $self->{serverpid} = 0;
174 if ($self->{proxy_sock} == 0) {
180 my $execcmd = $self->execute
181 ." s_server -max_protocol TLSv1.2 -no_comp -rev -engine ossltest -accept "
182 .($self->server_port)
183 ." -cert ".$self->cert." -naccept ".$self->serverconnects;
184 unless ($self->supports_IPv6) {
187 if ($self->ciphers ne "") {
188 $execcmd .= " -cipher ".$self->ciphers;
190 if ($self->serverflags ne "") {
191 $execcmd .= " ".$self->serverflags;
194 print STDERR "Server command: $execcmd\n";
198 $self->serverpid($pid);
200 return $self->clientstart;
208 if ($self->execute) {
212 if ($self->reneg()) {
217 my $execcmd = "echo ".$echostr." | ".$self->execute
218 ." s_client -max_protocol TLSv1.2 -engine ossltest -connect "
219 .($self->proxy_addr).":".($self->proxy_port);
220 unless ($self->supports_IPv6) {
223 if ($self->cipherc ne "") {
224 $execcmd .= " -cipher ".$self->cipherc;
226 if ($self->clientflags ne "") {
227 $execcmd .= " ".$self->clientflags;
230 print STDERR "Client command: $execcmd\n";
234 $self->clientpid($pid);
237 # Wait for incoming connection from client
239 if(!($client_sock = $self->{proxy_sock}->accept())) {
240 warn "Failed accepting incoming connection: $!\n";
244 print "Connection opened\n";
246 # Now connect to the server
249 #We loop over this a few times because sometimes s_server can take a while
252 my $servaddr = $self->server_addr;
253 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
255 $server_sock = $IP_factory->(
256 PeerAddr => $servaddr,
257 PeerPort => $self->server_port,
264 #Some buggy IP factories can return a defined server_sock that hasn't
265 #actually connected, so we check peerport too
266 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
267 $server_sock->close() if defined($server_sock);
270 #Sleep for a short while
271 select(undef, undef, undef, 0.1);
273 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
277 } while (!$server_sock);
279 my $sel = IO::Select->new($server_sock, $client_sock);
281 my @handles = ($server_sock, $client_sock);
283 #Wait for either the server socket or the client socket to become readable
285 local $SIG{PIPE} = "IGNORE";
286 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
287 foreach my $hand (@ready) {
288 if ($hand == $server_sock) {
289 $server_sock->sysread($indata, 16384) or goto END;
290 $indata = $self->process_packet(1, $indata);
291 $client_sock->syswrite($indata);
292 } elsif ($hand == $client_sock) {
293 $client_sock->sysread($indata, 16384) or goto END;
294 $indata = $self->process_packet(0, $indata);
295 $server_sock->syswrite($indata);
304 print "Connection closed\n";
306 $server_sock->close();
309 #Closing this also kills the child process
310 $client_sock->close();
315 $self->serverconnects($self->serverconnects - 1);
316 if ($self->serverconnects == 0) {
317 die "serverpid is zero\n" if $self->serverpid == 0;
318 print "Waiting for server process to close: "
319 .$self->serverpid."\n";
320 waitpid( $self->serverpid, 0);
321 die "exit code $? from server process\n" if $? != 0;
323 # Give s_server sufficient time to finish what it was doing
326 die "clientpid is zero\n" if $self->clientpid == 0;
327 print "Waiting for client process to close: ".$self->clientpid."\n";
328 waitpid($self->clientpid, 0);
335 my ($self, $server, $packet) = @_;
342 print "Received server packet\n";
344 print "Received client packet\n";
347 print "Packet length = ".length($packet)."\n";
348 print "Processing flight ".$self->flight."\n";
350 #Return contains the list of record found in the packet followed by the
351 #list of messages in those records
352 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
353 push @{$self->record_list}, @{$ret[0]};
354 push @{$self->{message_list}}, @{$ret[1]};
358 #Finished parsing. Call user provided filter here
359 if(defined $self->filter) {
360 $self->filter->($self);
363 #Reconstruct the packet
365 foreach my $record (@{$self->record_list}) {
366 #We only replay the records for the current flight
367 if ($record->flight != $self->flight) {
370 $packet .= $record->reconstruct_record();
373 $self->{flight} = $self->{flight} + 1;
375 print "Forwarded packet length = ".length($packet)."\n\n";
384 return $self->{execute};
389 return $self->{cert};
394 return $self->{debug};
399 return $self->{flight};
404 return $self->{record_list};
409 return $self->{success};
424 return $self->{proxy_addr};
429 return $self->{proxy_port};
432 #Read/write accessors
437 $self->{server_addr} = shift;
439 return $self->{server_addr};
445 $self->{server_port} = shift;
447 return $self->{server_port};
453 $self->{filter} = shift;
455 return $self->{filter};
461 $self->{cipherc} = shift;
463 return $self->{cipherc};
469 $self->{ciphers} = shift;
471 return $self->{ciphers};
477 $self->{serverflags} = shift;
479 return $self->{serverflags};
485 $self->{clientflags} = shift;
487 return $self->{clientflags};
493 $self->{serverconnects} = shift;
495 return $self->{serverconnects};
497 # This is a bit ugly because the caller is responsible for keeping the records
498 # in sync with the updated message list; simply updating the message list isn't
499 # sufficient to get the proxy to forward the new message.
500 # But it does the trick for the one test (test_sslsessiontick) that needs it.
505 $self->{message_list} = shift;
507 return $self->{message_list};
513 $self->{serverpid} = shift;
515 return $self->{serverpid};
521 $self->{clientpid} = shift;
523 return $self->{clientpid};
530 for (my $i = 0; $i < $length; $i++) {
540 $self->{reneg} = shift;
542 return $self->{reneg};