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//
// Copyright 2025 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
// Copyright 2018 Devolutions <info@devolutions.net>
// Copyright 2018 Cody Piersall <cody.piersall@gmail.com>
//
// This software is supplied under the terms of the MIT License, a
// copy of which should be located in the distribution where this
// file was obtained (LICENSE.txt). A copy of the license may also be
// found online at https://opensource.org/licenses/MIT.
//
#include "nng/nng.h"
#include <nuts.h>
// TLS tests.
static nng_tls_config *
tls_server_config(void)
{
nng_tls_config *c;
NUTS_PASS(nng_tls_config_alloc(&c, NNG_TLS_MODE_SERVER));
NUTS_PASS(nng_tls_config_own_cert(
c, nuts_server_crt, nuts_server_key, NULL));
return (c);
}
static nng_tls_config *
tls_server_config_ecdsa(void)
{
nng_tls_config *c;
NUTS_PASS(nng_tls_config_alloc(&c, NNG_TLS_MODE_SERVER));
NUTS_PASS(nng_tls_config_own_cert(
c, nuts_ecdsa_server_crt, nuts_ecdsa_server_key, NULL));
return (c);
}
static nng_tls_config *
tls_config_psk(nng_tls_mode mode, const char *name, uint8_t *key, size_t len)
{
nng_tls_config *c;
NUTS_PASS(nng_tls_config_alloc(&c, mode));
NUTS_PASS(nng_tls_config_psk(c, name, key, len));
return (c);
}
static nng_tls_config *
tls_client_config(void)
{
nng_tls_config *c;
NUTS_PASS(nng_tls_config_alloc(&c, NNG_TLS_MODE_CLIENT));
NUTS_PASS(nng_tls_config_own_cert(
c, nuts_client_crt, nuts_client_key, NULL));
NUTS_PASS(nng_tls_config_ca_chain(c, nuts_server_crt, NULL));
NUTS_PASS(nng_tls_config_server_name(c, "localhost"));
return (c);
}
static nng_tls_config *
tls_client_config_ecdsa(void)
{
nng_tls_config *c;
NUTS_PASS(nng_tls_config_alloc(&c, NNG_TLS_MODE_CLIENT));
NUTS_PASS(nng_tls_config_own_cert(
c, nuts_ecdsa_client_crt, nuts_ecdsa_client_key, NULL));
NUTS_PASS(nng_tls_config_ca_chain(c, nuts_ecdsa_server_crt, NULL));
NUTS_PASS(nng_tls_config_server_name(c, "localhost"));
return (c);
}
void
test_dtls_port_zero_bind(void)
{
nng_socket s1;
nng_socket s2;
nng_tls_config *c1, *c2;
nng_sockaddr sa;
nng_listener l;
nng_dialer d;
const nng_url *url;
NUTS_ENABLE_LOG(NNG_LOG_DEBUG);
c1 = tls_server_config();
c2 = tls_client_config();
NUTS_OPEN(s1);
NUTS_OPEN(s2);
NUTS_PASS(nng_listener_create(&l, s1, "dtls://127.0.0.1:0"));
NUTS_PASS(nng_listener_set_tls(l, c1));
NUTS_PASS(nng_listener_start(l, 0));
NUTS_PASS(nng_listener_get_url(l, &url));
NUTS_MATCH(nng_url_scheme(url), "dtls");
NUTS_PASS(nng_listener_get_addr(l, NNG_OPT_LOCADDR, &sa));
NUTS_TRUE(sa.s_in.sa_family == NNG_AF_INET);
NUTS_TRUE(sa.s_in.sa_port != 0);
NUTS_TRUE(sa.s_in.sa_addr = nuts_be32(0x7f000001));
NUTS_PASS(nng_dialer_create_url(&d, s2, url));
NUTS_PASS(nng_dialer_set_tls(d, c2));
// NUTS_PASS(nng_dialer_start(d, NNG_FLAG_NONBLOCK));
NUTS_PASS(nng_dialer_start(d, 0));
nng_msleep(1000);
NUTS_CLOSE(s2);
NUTS_CLOSE(s1);
nng_tls_config_free(c1);
nng_tls_config_free(c2);
}
void
test_dtls_bad_cert_mutual(void)
{
nng_socket s1;
nng_socket s2;
nng_tls_config *c1, *c2;
nng_sockaddr sa;
nng_listener l;
nng_dialer d;
const nng_url *url;
c1 = tls_server_config();
c2 = tls_client_config();
NUTS_ENABLE_LOG(NNG_LOG_DEBUG);
NUTS_OPEN(s1);
NUTS_OPEN(s2);
NUTS_PASS(nng_tls_config_auth_mode(c1, NNG_TLS_AUTH_MODE_REQUIRED));
// a valid cert, but not the one that signed the config!
NUTS_PASS(nng_tls_config_ca_chain(c1, nuts_ecdsa_server_crt, NULL));
NUTS_PASS(nng_listener_create(&l, s1, "dtls://127.0.0.1:0"));
NUTS_PASS(nng_listener_set_tls(l, c1));
NUTS_PASS(nng_listener_start(l, 0));
NUTS_PASS(nng_listener_get_url(l, &url));
NUTS_MATCH(nng_url_scheme(url), "dtls");
NUTS_PASS(nng_listener_get_addr(l, NNG_OPT_LOCADDR, &sa));
NUTS_TRUE(sa.s_in.sa_family == NNG_AF_INET);
NUTS_TRUE(sa.s_in.sa_port != 0);
NUTS_TRUE(sa.s_in.sa_addr = nuts_be32(0x7f000001));
NUTS_PASS(nng_dialer_create_url(&d, s2, url));
NUTS_PASS(nng_dialer_set_tls(d, c2));
// With DTLS we are not guaranteed to get the connection failure.
nng_dialer_start(d, NNG_FLAG_NONBLOCK);
nng_msleep(500);
NUTS_CLOSE(s2);
NUTS_CLOSE(s1);
nng_tls_config_free(c1);
nng_tls_config_free(c2);
}
void
test_dtls_cert_mutual(void)
{
nng_socket s1;
nng_socket s2;
nng_tls_config *c1, *c2;
nng_sockaddr sa;
nng_listener l;
nng_dialer d;
const nng_url *url;
c1 = tls_server_config_ecdsa();
c2 = tls_client_config_ecdsa();
NUTS_ENABLE_LOG(NNG_LOG_DEBUG);
NUTS_OPEN(s1);
NUTS_OPEN(s2);
NUTS_PASS(nng_tls_config_auth_mode(c1, NNG_TLS_AUTH_MODE_REQUIRED));
NUTS_PASS(nng_tls_config_ca_chain(c1, nuts_ecdsa_server_crt, NULL));
NUTS_PASS(nng_tls_config_ca_chain(c2, nuts_ecdsa_server_crt, NULL));
NUTS_PASS(nng_listener_create(&l, s1, "dtls://127.0.0.1:0"));
NUTS_PASS(nng_listener_set_tls(l, c1));
NUTS_PASS(nng_listener_start(l, 0));
NUTS_PASS(nng_listener_get_url(l, &url));
NUTS_MATCH(nng_url_scheme(url), "dtls");
NUTS_PASS(nng_listener_get_addr(l, NNG_OPT_LOCADDR, &sa));
NUTS_TRUE(sa.s_in.sa_family == NNG_AF_INET);
NUTS_TRUE(sa.s_in.sa_port != 0);
NUTS_TRUE(sa.s_in.sa_addr = nuts_be32(0x7f000001));
NUTS_PASS(nng_dialer_create_url(&d, s2, url));
NUTS_PASS(nng_dialer_set_tls(d, c2));
NUTS_PASS(nng_dialer_start(d, 0));
nng_msleep(50);
NUTS_CLOSE(s2);
NUTS_CLOSE(s1);
nng_tls_config_free(c1);
nng_tls_config_free(c2);
}
void
test_dtls_malformed_address(void)
{
nng_socket s1;
NUTS_OPEN(s1);
NUTS_FAIL(nng_dial(s1, "dtls://127.0.0.1", NULL, 0), NNG_EADDRINVAL);
NUTS_FAIL(
nng_dial(s1, "dtls://127.0.0.1.32", NULL, 0), NNG_EADDRINVAL);
NUTS_FAIL(
nng_dial(s1, "dtls://127.0.x.1.32", NULL, 0), NNG_EADDRINVAL);
NUTS_FAIL(
nng_listen(s1, "dtls://127.0.0.1.32", NULL, 0), NNG_EADDRINVAL);
NUTS_FAIL(
nng_listen(s1, "dtls://127.0.x.1.32", NULL, 0), NNG_EADDRINVAL);
NUTS_CLOSE(s1);
}
// DTLS does not support TCP_NODELAY because it's based on UDP.
void
test_dtls_no_delay_option(void)
{
nng_socket s;
nng_dialer d;
nng_listener l;
bool v;
char *addr;
nng_tls_config *dc, *lc;
NUTS_ADDR(addr, "dtls");
dc = tls_client_config();
lc = tls_server_config();
NUTS_OPEN(s);
NUTS_PASS(nng_dialer_create(&d, s, addr));
NUTS_PASS(nng_dialer_set_tls(d, dc));
NUTS_FAIL(
nng_dialer_get_bool(d, NNG_OPT_TCP_NODELAY, &v), NNG_ENOTSUP);
NUTS_FAIL(nng_dialer_set_bool(d, NNG_OPT_TCP_NODELAY, v), NNG_ENOTSUP);
NUTS_PASS(nng_listener_create(&l, s, addr));
NUTS_PASS(nng_listener_set_tls(l, lc));
NUTS_FAIL(
nng_listener_get_bool(l, NNG_OPT_TCP_NODELAY, &v), NNG_ENOTSUP);
NUTS_FAIL(
nng_listener_set_bool(l, NNG_OPT_TCP_NODELAY, v), NNG_ENOTSUP);
NUTS_PASS(nng_dialer_close(d));
NUTS_PASS(nng_listener_close(l));
NUTS_CLOSE(s);
nng_tls_config_free(lc);
nng_tls_config_free(dc);
}
void
test_dtls_recv_max(void)
{
char msg[256];
char buf[256];
nng_socket s0;
nng_socket s1;
nng_tls_config *c0, *c1;
nng_listener l;
nng_dialer d;
size_t sz;
char *addr;
const nng_url *url;
NUTS_ADDR_ZERO(addr, "dtls");
c0 = tls_server_config();
c1 = tls_client_config();
NUTS_OPEN(s0);
NUTS_PASS(nng_socket_set_ms(s0, NNG_OPT_RECVTIMEO, 100));
NUTS_PASS(nng_socket_set_size(s0, NNG_OPT_RECVMAXSZ, 200));
NUTS_PASS(nng_listener_create(&l, s0, addr));
NUTS_PASS(nng_listener_set_tls(l, c0));
NUTS_PASS(nng_socket_get_size(s0, NNG_OPT_RECVMAXSZ, &sz));
NUTS_TRUE(sz == 200);
NUTS_PASS(nng_listener_set_size(l, NNG_OPT_RECVMAXSZ, 100));
NUTS_PASS(nng_listener_start(l, 0));
NUTS_PASS(nng_listener_get_url(l, &url));
NUTS_OPEN(s1);
NUTS_PASS(nng_dialer_create_url(&d, s1, url));
NUTS_PASS(nng_dialer_set_tls(d, c1));
NUTS_PASS(nng_dialer_start(d, 0));
NUTS_PASS(nng_send(s1, msg, 95, 0));
NUTS_PASS(nng_socket_set_ms(s1, NNG_OPT_SENDTIMEO, 100));
NUTS_PASS(nng_recv(s0, buf, &sz, 0));
NUTS_TRUE(sz == 95);
NUTS_PASS(nng_send(s1, msg, 150, 0));
NUTS_FAIL(nng_recv(s0, buf, &sz, 0), NNG_ETIMEDOUT);
NUTS_CLOSE(s0);
NUTS_CLOSE(s1);
nng_tls_config_free(c0);
nng_tls_config_free(c1);
}
void
test_dtls_psk(void)
{
#ifdef NNG_SUPP_TLS_PSK
char msg[256];
char buf[256];
nng_socket s0;
nng_socket s1;
nng_tls_config *c0, *c1;
nng_listener l;
nng_dialer d;
size_t sz;
char *addr;
uint8_t key[32];
const nng_url *url;
for (unsigned i = 0; i < sizeof(key); i++) {
key[i] = rand() % 0xff;
}
NUTS_ADDR_ZERO(addr, "dtls");
NUTS_ENABLE_LOG(NNG_LOG_DEBUG);
c0 = tls_config_psk(NNG_TLS_MODE_SERVER, "identity", key, sizeof key);
c1 = tls_config_psk(NNG_TLS_MODE_CLIENT, "identity", key, sizeof key);
NUTS_OPEN(s0);
NUTS_PASS(nng_socket_set_ms(s0, NNG_OPT_RECVTIMEO, 100));
NUTS_PASS(nng_listener_create(&l, s0, addr));
NUTS_PASS(nng_listener_set_tls(l, c0));
NUTS_PASS(nng_listener_start(l, 0));
NUTS_PASS(nng_listener_get_url(l, &url));
NUTS_OPEN(s1);
NUTS_PASS(nng_dialer_create_url(&d, s1, url));
NUTS_PASS(nng_dialer_set_tls(d, c1));
NUTS_PASS(nng_dialer_start(d, 0));
NUTS_SLEEP(1000); // make sure connection has time to form!
NUTS_PASS(nng_send(s1, msg, 95, 0));
NUTS_PASS(nng_recv(s0, buf, &sz, 0));
NUTS_TRUE(sz == 95);
NUTS_CLOSE(s0);
NUTS_CLOSE(s1);
nng_tls_config_free(c0);
nng_tls_config_free(c1);
#else
NUTS_SKIP("no PSK support");
#endif
}
NUTS_TESTS = {
{ "dtls port zero bind", test_dtls_port_zero_bind },
{ "dtls malformed address", test_dtls_malformed_address },
{ "dtls no delay option", test_dtls_no_delay_option },
{ "dtls recv max", test_dtls_recv_max },
{ "dtls pre-shared key", test_dtls_psk },
{ "dtls bad cert mutual", test_dtls_bad_cert_mutual },
{ "dtls cert mutual", test_dtls_cert_mutual },
{ NULL, NULL },
};
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