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);
164 return $self->clientstart;
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 warn "Failed creating proxy socket (".$proxaddr.",".$self->proxy_port."): $!\n";
195 if ($self->execute) {
199 open(STDOUT, ">", File::Spec->devnull())
200 or die "Failed to redirect stdout: $!";
201 open(STDERR, ">&STDOUT");
203 my $execcmd = "echo test | ".$self->execute
204 ." s_client -engine ossltest -connect "
205 .($self->proxy_addr).":".($self->proxy_port);
206 if ($self->cipherc ne "") {
207 $execcmd .= " -cipher ".$self->cipherc;
209 if ($self->clientflags ne "") {
210 $execcmd .= " ".$self->clientflags;
216 # Wait for incoming connection from client
218 if(!($client_sock = $proxy_sock->accept())) {
219 warn "Failed accepting incoming connection: $!\n";
223 print "Connection opened\n";
225 # Now connect to the server
228 #We loop over this a few times because sometimes s_server can take a while
231 my $servaddr = $self->server_addr;
232 $servaddr =~ s/[\[\]]//g; # Remove [ and ]
234 $server_sock = $IP_factory->(
235 PeerAddr => $servaddr,
236 PeerPort => $self->server_port,
243 #Some buggy IP factories can return a defined server_sock that hasn't
244 #actually connected, so we check peerport too
245 if ($@ || !defined($server_sock) || !defined($server_sock->peerport)) {
246 $server_sock->close() if defined($server_sock);
249 #Sleep for a short while
250 select(undef, undef, undef, 0.1);
252 warn "Failed to start up server (".$servaddr.",".$self->server_port."): $!\n";
256 } while (!$server_sock);
258 my $sel = IO::Select->new($server_sock, $client_sock);
260 my @handles = ($server_sock, $client_sock);
262 #Wait for either the server socket or the client socket to become readable
264 while(!(TLSProxy::Message->end) && (@ready = $sel->can_read)) {
265 foreach my $hand (@ready) {
266 if ($hand == $server_sock) {
267 $server_sock->sysread($indata, 16384) or goto END;
268 $indata = $self->process_packet(1, $indata);
269 $client_sock->syswrite($indata);
270 } elsif ($hand == $client_sock) {
271 $client_sock->sysread($indata, 16384) or goto END;
272 $indata = $self->process_packet(0, $indata);
273 $server_sock->syswrite($indata);
282 print "Connection closed\n";
284 $server_sock->close();
287 #Closing this also kills the child process
288 $client_sock->close();
291 $proxy_sock->close();
296 $self->serverconnects($self->serverconnects - 1);
297 if ($self->serverconnects == 0) {
298 die "serverpid is zero\n" if $self->serverpid == 0;
299 print "Waiting for server process to close: "
300 .$self->serverpid."\n";
301 waitpid( $self->serverpid, 0);
308 my ($self, $server, $packet) = @_;
315 print "Received server packet\n";
317 print "Received client packet\n";
320 print "Packet length = ".length($packet)."\n";
321 print "Processing flight ".$self->flight."\n";
323 #Return contains the list of record found in the packet followed by the
324 #list of messages in those records
325 my @ret = TLSProxy::Record->get_records($server, $self->flight, $packet);
326 push @{$self->record_list}, @{$ret[0]};
327 push @{$self->{message_list}}, @{$ret[1]};
331 #Finished parsing. Call user provided filter here
332 if(defined $self->filter) {
333 $self->filter->($self);
336 #Reconstruct the packet
338 foreach my $record (@{$self->record_list}) {
339 #We only replay the records for the current flight
340 if ($record->flight != $self->flight) {
343 $packet .= $record->reconstruct_record();
346 $self->{flight} = $self->{flight} + 1;
348 print "Forwarded packet length = ".length($packet)."\n\n";
357 return $self->{execute};
362 return $self->{cert};
367 return $self->{debug};
372 return $self->{flight};
377 return $self->{record_list};
382 return $self->{success};
395 #Read/write accessors
400 $self->{proxy_addr} = shift;
402 return $self->{proxy_addr};
408 $self->{proxy_port} = shift;
410 return $self->{proxy_port};
416 $self->{server_addr} = shift;
418 return $self->{server_addr};
424 $self->{server_port} = shift;
426 return $self->{server_port};
432 $self->{filter} = shift;
434 return $self->{filter};
440 $self->{cipherc} = shift;
442 return $self->{cipherc};
448 $self->{ciphers} = shift;
450 return $self->{ciphers};
456 $self->{serverflags} = shift;
458 return $self->{serverflags};
464 $self->{clientflags} = shift;
466 return $self->{clientflags};
472 $self->{serverconnects} = shift;
474 return $self->{serverconnects};
476 # This is a bit ugly because the caller is responsible for keeping the records
477 # in sync with the updated message list; simply updating the message list isn't
478 # sufficient to get the proxy to forward the new message.
479 # But it does the trick for the one test (test_sslsessiontick) that needs it.
484 $self->{message_list} = shift;
486 return $self->{message_list};
492 $self->{serverpid} = shift;
494 return $self->{serverpid};