libzmq/tests/test_security_curve.cpp
Pieter Hintjens b49a60410a Problem: use of libsodium vs. tweetnacl is confused
It's unclear which we need and in the source code, conditional code
treats tweetnacl as a subclass of libsodium, which is inaccurate.

Solution: redesign the configure/cmake API for this:

* tweetnacl is present by default and cannot be enabled
* libsodium can be enabled using --with-libsodium, which replaces
  the built-in tweetnacl
* CURVE encryption can be disabled entirely using --enable-curve=no

The macros we define in platform.hpp are:

    ZMQ_HAVE_CURVE    1        //  When CURVE is enabled
    HAVE_LIBSODIUM    1        //  When we are using libsodium
    HAVE_TWEETNACL    1        //  When we're using tweetnacl (default)

As of this patch, the default build of libzmq always has CURVE
security, and always uses tweetnacl.
2016-02-11 13:32:01 +01:00

295 lines
10 KiB
C++

/*
Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
This file is part of libzmq, the ZeroMQ core engine in C++.
libzmq is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License (LGPL) as published
by the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
As a special exception, the Contributors give you permission to link
this library with independent modules to produce an executable,
regardless of the license terms of these independent modules, and to
copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the
terms and conditions of the license of that module. An independent
module is a module which is not derived from or based on this library.
If you modify this library, you must extend this exception to your
version of the library.
libzmq is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "testutil.hpp"
#if defined (ZMQ_HAVE_WINDOWS)
# include <winsock2.h>
# include <ws2tcpip.h>
# include <stdexcept>
# define close closesocket
#else
# include <sys/socket.h>
# include <netinet/in.h>
# include <arpa/inet.h>
# include <unistd.h>
#endif
// We'll generate random test keys at startup
static char client_public [41];
static char client_secret [41];
static char server_public [41];
static char server_secret [41];
// --------------------------------------------------------------------------
// This methods receives and validates ZAP requestes (allowing or denying
// each client connection).
static void zap_handler (void *handler)
{
// Process ZAP requests forever
while (true) {
char *version = s_recv (handler);
if (!version)
break; // Terminating
char *sequence = s_recv (handler);
char *domain = s_recv (handler);
char *address = s_recv (handler);
char *identity = s_recv (handler);
char *mechanism = s_recv (handler);
uint8_t client_key [32];
int size = zmq_recv (handler, client_key, 32, 0);
assert (size == 32);
char client_key_text [41];
zmq_z85_encode (client_key_text, client_key, 32);
assert (streq (version, "1.0"));
assert (streq (mechanism, "CURVE"));
assert (streq (identity, "IDENT"));
s_sendmore (handler, version);
s_sendmore (handler, sequence);
if (streq (client_key_text, client_public)) {
s_sendmore (handler, "200");
s_sendmore (handler, "OK");
s_sendmore (handler, "anonymous");
s_send (handler, "");
}
else {
s_sendmore (handler, "400");
s_sendmore (handler, "Invalid client public key");
s_sendmore (handler, "");
s_send (handler, "");
}
free (version);
free (sequence);
free (domain);
free (address);
free (identity);
free (mechanism);
}
zmq_close (handler);
}
int main (void)
{
#ifndef ZMQ_HAVE_CURVE
printf ("CURVE encryption not installed, skipping test\n");
return 0;
#endif
// Generate new keypairs for this test
int rc = zmq_curve_keypair (client_public, client_secret);
assert (rc == 0);
rc = zmq_curve_keypair (server_public, server_secret);
assert (rc == 0);
setup_test_environment ();
void *ctx = zmq_ctx_new ();
assert (ctx);
// Spawn ZAP handler
// We create and bind ZAP socket in main thread to avoid case
// where child thread does not start up fast enough.
void *handler = zmq_socket (ctx, ZMQ_REP);
assert (handler);
rc = zmq_bind (handler, "inproc://zeromq.zap.01");
assert (rc == 0);
void *zap_thread = zmq_threadstart (&zap_handler, handler);
// Server socket will accept connections
void *server = zmq_socket (ctx, ZMQ_DEALER);
assert (server);
int as_server = 1;
rc = zmq_setsockopt (server, ZMQ_CURVE_SERVER, &as_server, sizeof (int));
assert (rc == 0);
rc = zmq_setsockopt (server, ZMQ_CURVE_SECRETKEY, server_secret, 41);
assert (rc == 0);
rc = zmq_setsockopt (server, ZMQ_IDENTITY, "IDENT", 6);
assert (rc == 0);
rc = zmq_bind (server, "tcp://127.0.0.1:9998");
assert (rc == 0);
// Check CURVE security with valid credentials
void *client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, server_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, client_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, client_secret, 41);
assert (rc == 0);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
bounce (server, client);
rc = zmq_close (client);
assert (rc == 0);
// Check CURVE security with a garbage server key
// This will be caught by the curve_server class, not passed to ZAP
char garbage_key [] = "0000111122223333444455556666777788889999";
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, garbage_key, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, client_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, client_secret, 41);
assert (rc == 0);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Check CURVE security with a garbage client public key
// This will be caught by the curve_server class, not passed to ZAP
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, server_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, garbage_key, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, client_secret, 41);
assert (rc == 0);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Check CURVE security with a garbage client secret key
// This will be caught by the curve_server class, not passed to ZAP
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, server_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, client_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, garbage_key, 41);
assert (rc == 0);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Check CURVE security with bogus client credentials
// This must be caught by the ZAP handler
char bogus_public [41];
char bogus_secret [41];
zmq_curve_keypair (bogus_public, bogus_secret);
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, server_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, bogus_public, 41);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, bogus_secret, 41);
assert (rc == 0);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Check CURVE security with NULL client credentials
// This must be caught by the curve_server class, not passed to ZAP
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_connect (client, "tcp://localhost:9998");
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Check CURVE security with PLAIN client credentials
// This must be caught by the curve_server class, not passed to ZAP
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
rc = zmq_setsockopt (client, ZMQ_PLAIN_USERNAME, "admin", 5);
assert (rc == 0);
rc = zmq_setsockopt (client, ZMQ_PLAIN_PASSWORD, "password", 8);
assert (rc == 0);
expect_bounce_fail (server, client);
close_zero_linger (client);
// Unauthenticated messages from a vanilla socket shouldn't be received
struct sockaddr_in ip4addr;
int s;
ip4addr.sin_family = AF_INET;
ip4addr.sin_port = htons (9998);
#if (ZMQ_HAVE_WINDOWS and _WIN32_WINNT < 0x0600)
ip4addr.sin_addr.s_addr = inet_addr ("127.0.0.1");
#else
inet_pton(AF_INET, "127.0.0.1", &ip4addr.sin_addr);
#endif
s = socket (AF_INET, SOCK_STREAM, IPPROTO_TCP);
rc = connect (s, (struct sockaddr*) &ip4addr, sizeof (ip4addr));
assert (rc > -1);
// send anonymous ZMTP/1.0 greeting
send (s, "\x01\x00", 2, 0);
// send sneaky message that shouldn't be received
send (s, "\x08\x00sneaky\0", 9, 0);
int timeout = 250;
zmq_setsockopt (server, ZMQ_RCVTIMEO, &timeout, sizeof (timeout));
char *buf = s_recv (server);
if (buf != NULL) {
printf ("Received unauthenticated message: %s\n", buf);
assert (buf == NULL);
}
close (s);
// Check return codes for invalid buffer sizes
client = zmq_socket (ctx, ZMQ_DEALER);
assert (client);
errno = 0;
rc = zmq_setsockopt (client, ZMQ_CURVE_SERVERKEY, server_public, 123);
assert (rc == -1 && errno == EINVAL);
errno = 0;
rc = zmq_setsockopt (client, ZMQ_CURVE_PUBLICKEY, client_public, 123);
assert (rc == -1 && errno == EINVAL);
errno = 0;
rc = zmq_setsockopt (client, ZMQ_CURVE_SECRETKEY, client_secret, 123);
assert (rc == -1 && errno == EINVAL);
rc = zmq_close (client);
assert (rc == 0);
// Shutdown
rc = zmq_close (server);
assert (rc == 0);
rc = zmq_ctx_term (ctx);
assert (rc == 0);
// Wait until ZAP handler terminates
zmq_threadclose (zap_thread);
return 0;
}