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 my $execcmd = $self->execute
151 ." s_server -no_comp -rev -engine ossltest -accept "
152 .($self->server_port)
153 ." -cert ".$self->cert." -naccept ".$self->serverconnects;
154 if ($self->ciphers ne "") {
155 $execcmd .= " -cipher ".$self->ciphers;
157 if ($self->serverflags ne "") {
158 $execcmd .= " ".$self->serverflags;
162 $self->serverpid($pid);
173 open DEVNULL, ">", File::Spec->devnull();
174 $oldstdout = select(DEVNULL);
177 # Create the Proxy socket
178 my $proxaddr = $self->proxy_addr;
179 $proxaddr =~ s/[\[\]]//g; # Remove [ and ]
180 my $proxy_sock = $IP_factory->(
181 LocalHost => $proxaddr,
182 LocalPort => $self->proxy_port,
189 print "Proxy started on port ".$self->proxy_port."\n";
191 die "Failed creating proxy socket (".$proxaddr.",".$self->proxy_port."): $!\n";
194 if ($self->execute) {
198 open(STDOUT, ">", File::Spec->devnull())
199 or die "Failed to redirect stdout: $!";
200 open(STDERR, ">&STDOUT");
202 my $execcmd = "echo test | ".$self->execute
203 ." s_client -engine ossltest -connect "
204 .($self->proxy_addr).":".($self->proxy_port);
205 if ($self->cipherc ne "") {
206 $execcmd .= " -cipher ".$self->cipherc;
208 if ($self->clientflags ne "") {
209 $execcmd .= " ".$self->clientflags;
215 # Wait for incoming connection from client
216 my $client_sock = $proxy_sock->accept()
217 or die "Failed accepting incoming connection: $!\n";
219 print "Connection opened\n";
221 # Now connect to the server
224 #We loop over this a few times because sometimes s_server can take a while
227 my $servaddr = $self->server_addr;
228 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
229 $server_sock = $IP_factory->(
230 PeerAddr => $servaddr,
231 PeerPort => $self->server_port,
237 if ($@ || !defined($server_sock)) {
238 $server_sock->close() if defined($server_sock);
241 #Sleep for a short while
242 select(undef, undef, undef, 0.1);
244 die "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
247 } while (!$server_sock);
249 my $sel = IO::Select->new($server_sock, $client_sock);
251 my @handles = ($server_sock, $client_sock);
253 #Wait for either the server socket or the client socket to become readable
255 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
256 foreach my $hand (@ready) {
257 if ($hand == $server_sock) {
258 $server_sock->sysread($indata, 16384) or goto END;
259 $indata = $self->process_packet(1, $indata);
260 $client_sock->syswrite($indata);
261 } elsif ($hand == $client_sock) {
262 $client_sock->sysread($indata, 16384) or goto END;
263 $indata = $self->process_packet(0, $indata);
264 $server_sock->syswrite($indata);
273 print "Connection closed\n";
275 $server_sock->close();
278 #Closing this also kills the child process
279 $client_sock->close();
282 $proxy_sock->close();
287 $self->serverconnects($self->serverconnects - 1);
288 if ($self->serverconnects == 0) {
289 die "serverpid is zero\n" if $self->serverpid == 0;
290 print "Waiting for server process to close: "
291 .$self->serverpid."\n";
292 waitpid( $self->serverpid, 0);
298 my ($self, $server, $packet) = @_;
305 print "Received server packet\n";
307 print "Received client packet\n";
310 print "Packet length = ".length($packet)."\n";
311 print "Processing flight ".$self->flight."\n";
313 #Return contains the list of record found in the packet followed by the
314 #list of messages in those records
315 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
316 push @{$self->record_list}, @{$ret[0]};
317 push @{$self->{message_list}}, @{$ret[1]};
321 #Finished parsing. Call user provided filter here
322 if(defined $self->filter) {
323 $self->filter->($self);
326 #Reconstruct the packet
328 foreach my $record (@{$self->record_list}) {
329 #We only replay the records for the current flight
330 if ($record->flight != $self->flight) {
333 $packet .= $record->reconstruct_record();
336 $self->{flight} = $self->{flight} + 1;
338 print "Forwarded packet length = ".length($packet)."\n\n";
347 return $self->{execute};
352 return $self->{cert};
357 return $self->{debug};
362 return $self->{flight};
367 return $self->{record_list};
372 return $self->{success};
385 #Read/write accessors
390 $self->{proxy_addr} = shift;
392 return $self->{proxy_addr};
398 $self->{proxy_port} = shift;
400 return $self->{proxy_port};
406 $self->{server_addr} = shift;
408 return $self->{server_addr};
414 $self->{server_port} = shift;
416 return $self->{server_port};
422 $self->{filter} = shift;
424 return $self->{filter};
430 $self->{cipherc} = shift;
432 return $self->{cipherc};
438 $self->{ciphers} = shift;
440 return $self->{ciphers};
446 $self->{serverflags} = shift;
448 return $self->{serverflags};
454 $self->{clientflags} = shift;
456 return $self->{clientflags};
462 $self->{serverconnects} = shift;
464 return $self->{serverconnects};
466 # This is a bit ugly because the caller is responsible for keeping the records
467 # in sync with the updated message list; simply updating the message list isn't
468 # sufficient to get the proxy to forward the new message.
469 # But it does the trick for the one test (test_sslsessiontick) that needs it.
474 $self->{message_list} = shift;
476 return $self->{message_list};
482 $self->{serverpid} = shift;
484 return $self->{serverpid};