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qemu/tests/test-crypto-tlssession.c

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/*
* Copyright (C) 2015 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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 library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include "qemu/osdep.h"
#include "crypto-tls-x509-helpers.h"
#include "crypto-tls-psk-helpers.h"
#include "crypto/tlscredsx509.h"
#include "crypto/tlscredspsk.h"
#include "crypto/tlssession.h"
#include "qom/object_interfaces.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "qemu/sockets.h"
#include "authz/list.h"
#ifdef QCRYPTO_HAVE_TLS_TEST_SUPPORT
#define WORKDIR "tests/test-crypto-tlssession-work/"
#define PSKFILE WORKDIR "keys.psk"
#define KEYFILE WORKDIR "key-ctx.pem"
static ssize_t testWrite(const char *buf, size_t len, void *opaque)
{
int *fd = opaque;
return write(*fd, buf, len);
}
static ssize_t testRead(char *buf, size_t len, void *opaque)
{
int *fd = opaque;
return read(*fd, buf, len);
}
static QCryptoTLSCreds *test_tls_creds_psk_create(
QCryptoTLSCredsEndpoint endpoint,
const char *dir)
{
Object *parent = object_get_objects_root();
Object *creds = object_new_with_props(
TYPE_QCRYPTO_TLS_CREDS_PSK,
parent,
(endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
"testtlscredsserver" : "testtlscredsclient"),
&error_abort,
"endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
"server" : "client"),
"dir", dir,
"priority", "NORMAL",
NULL
);
return QCRYPTO_TLS_CREDS(creds);
}
static void test_crypto_tls_session_psk(void)
{
QCryptoTLSCreds *clientCreds;
QCryptoTLSCreds *serverCreds;
QCryptoTLSSession *clientSess = NULL;
QCryptoTLSSession *serverSess = NULL;
int channel[2];
bool clientShake = false;
bool serverShake = false;
int ret;
/* We'll use this for our fake client-server connection */
ret = socketpair(AF_UNIX, SOCK_STREAM, 0, channel);
g_assert(ret == 0);
/*
* We have an evil loop to do the handshake in a single
* thread, so we need these non-blocking to avoid deadlock
* of ourselves
*/
qemu_set_nonblock(channel[0]);
qemu_set_nonblock(channel[1]);
clientCreds = test_tls_creds_psk_create(
QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT,
WORKDIR);
g_assert(clientCreds != NULL);
serverCreds = test_tls_creds_psk_create(
QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
WORKDIR);
g_assert(serverCreds != NULL);
/* Now the real part of the test, setup the sessions */
clientSess = qcrypto_tls_session_new(
clientCreds, NULL, NULL,
QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, &error_abort);
g_assert(clientSess != NULL);
serverSess = qcrypto_tls_session_new(
serverCreds, NULL, NULL,
QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, &error_abort);
g_assert(serverSess != NULL);
/* For handshake to work, we need to set the I/O callbacks
* to read/write over the socketpair
*/
qcrypto_tls_session_set_callbacks(serverSess,
testWrite, testRead,
&channel[0]);
qcrypto_tls_session_set_callbacks(clientSess,
testWrite, testRead,
&channel[1]);
/*
* Finally we loop around & around doing handshake on each
* session until we get an error, or the handshake completes.
* This relies on the socketpair being nonblocking to avoid
* deadlocking ourselves upon handshake
*/
do {
int rv;
if (!serverShake) {
rv = qcrypto_tls_session_handshake(serverSess,
&error_abort);
g_assert(rv >= 0);
if (qcrypto_tls_session_get_handshake_status(serverSess) ==
QCRYPTO_TLS_HANDSHAKE_COMPLETE) {
serverShake = true;
}
}
if (!clientShake) {
rv = qcrypto_tls_session_handshake(clientSess,
&error_abort);
g_assert(rv >= 0);
if (qcrypto_tls_session_get_handshake_status(clientSess) ==
QCRYPTO_TLS_HANDSHAKE_COMPLETE) {
clientShake = true;
}
}
} while (!clientShake || !serverShake);
/* Finally make sure the server & client validation is successful. */
g_assert(qcrypto_tls_session_check_credentials(serverSess,
&error_abort) == 0);
g_assert(qcrypto_tls_session_check_credentials(clientSess,
&error_abort) == 0);
object_unparent(OBJECT(serverCreds));
object_unparent(OBJECT(clientCreds));
qcrypto_tls_session_free(serverSess);
qcrypto_tls_session_free(clientSess);
close(channel[0]);
close(channel[1]);
}
struct QCryptoTLSSessionTestData {
const char *servercacrt;
const char *clientcacrt;
const char *servercrt;
const char *clientcrt;
bool expectServerFail;
bool expectClientFail;
const char *hostname;
const char *const *wildcards;
};
static QCryptoTLSCreds *test_tls_creds_x509_create(
QCryptoTLSCredsEndpoint endpoint,
const char *certdir)
{
Object *parent = object_get_objects_root();
Object *creds = object_new_with_props(
TYPE_QCRYPTO_TLS_CREDS_X509,
parent,
(endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
"testtlscredsserver" : "testtlscredsclient"),
&error_abort,
"endpoint", (endpoint == QCRYPTO_TLS_CREDS_ENDPOINT_SERVER ?
"server" : "client"),
"dir", certdir,
"verify-peer", "yes",
"priority", "NORMAL",
/* We skip initial sanity checks here because we
* want to make sure that problems are being
* detected at the TLS session validation stage,
* and the test-crypto-tlscreds test already
* validate the sanity check code.
*/
"sanity-check", "no",
NULL
);
return QCRYPTO_TLS_CREDS(creds);
}
/*
* This tests validation checking of peer certificates
*
* This is replicating the checks that are done for an
* active TLS session after handshake completes. To
* simulate that we create our TLS contexts, skipping
* sanity checks. We then get a socketpair, and
* initiate a TLS session across them. Finally do
* do actual cert validation tests
*/
static void test_crypto_tls_session_x509(const void *opaque)
{
struct QCryptoTLSSessionTestData *data =
(struct QCryptoTLSSessionTestData *)opaque;
QCryptoTLSCreds *clientCreds;
QCryptoTLSCreds *serverCreds;
QCryptoTLSSession *clientSess = NULL;
QCryptoTLSSession *serverSess = NULL;
QAuthZList *auth;
const char * const *wildcards;
int channel[2];
bool clientShake = false;
bool serverShake = false;
int ret;
/* We'll use this for our fake client-server connection */
ret = socketpair(AF_UNIX, SOCK_STREAM, 0, channel);
g_assert(ret == 0);
/*
* We have an evil loop to do the handshake in a single
* thread, so we need these non-blocking to avoid deadlock
* of ourselves
*/
qemu_set_nonblock(channel[0]);
qemu_set_nonblock(channel[1]);
#define CLIENT_CERT_DIR "tests/test-crypto-tlssession-client/"
#define SERVER_CERT_DIR "tests/test-crypto-tlssession-server/"
mkdir(CLIENT_CERT_DIR, 0700);
mkdir(SERVER_CERT_DIR, 0700);
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);
g_assert(link(data->servercacrt,
SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
g_assert(link(data->servercrt,
SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT) == 0);
g_assert(link(KEYFILE,
SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY) == 0);
g_assert(link(data->clientcacrt,
CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT) == 0);
g_assert(link(data->clientcrt,
CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT) == 0);
g_assert(link(KEYFILE,
CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY) == 0);
clientCreds = test_tls_creds_x509_create(
QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT,
CLIENT_CERT_DIR);
g_assert(clientCreds != NULL);
serverCreds = test_tls_creds_x509_create(
QCRYPTO_TLS_CREDS_ENDPOINT_SERVER,
SERVER_CERT_DIR);
g_assert(serverCreds != NULL);
auth = qauthz_list_new("tlssessionacl",
QAUTHZ_LIST_POLICY_DENY,
&error_abort);
wildcards = data->wildcards;
while (wildcards && *wildcards) {
qauthz_list_append_rule(auth, *wildcards,
QAUTHZ_LIST_POLICY_ALLOW,
QAUTHZ_LIST_FORMAT_GLOB,
&error_abort);
wildcards++;
}
/* Now the real part of the test, setup the sessions */
clientSess = qcrypto_tls_session_new(
clientCreds, data->hostname, NULL,
QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT, &error_abort);
g_assert(clientSess != NULL);
serverSess = qcrypto_tls_session_new(
serverCreds, NULL,
data->wildcards ? "tlssessionacl" : NULL,
QCRYPTO_TLS_CREDS_ENDPOINT_SERVER, &error_abort);
g_assert(serverSess != NULL);
/* For handshake to work, we need to set the I/O callbacks
* to read/write over the socketpair
*/
qcrypto_tls_session_set_callbacks(serverSess,
testWrite, testRead,
&channel[0]);
qcrypto_tls_session_set_callbacks(clientSess,
testWrite, testRead,
&channel[1]);
/*
* Finally we loop around & around doing handshake on each
* session until we get an error, or the handshake completes.
* This relies on the socketpair being nonblocking to avoid
* deadlocking ourselves upon handshake
*/
do {
int rv;
if (!serverShake) {
rv = qcrypto_tls_session_handshake(serverSess,
&error_abort);
g_assert(rv >= 0);
if (qcrypto_tls_session_get_handshake_status(serverSess) ==
QCRYPTO_TLS_HANDSHAKE_COMPLETE) {
serverShake = true;
}
}
if (!clientShake) {
rv = qcrypto_tls_session_handshake(clientSess,
&error_abort);
g_assert(rv >= 0);
if (qcrypto_tls_session_get_handshake_status(clientSess) ==
QCRYPTO_TLS_HANDSHAKE_COMPLETE) {
clientShake = true;
}
}
} while (!clientShake || !serverShake);
/* Finally make sure the server validation does what
* we were expecting
*/
if (qcrypto_tls_session_check_credentials(
serverSess, data->expectServerFail ? NULL : &error_abort) < 0) {
g_assert(data->expectServerFail);
} else {
g_assert(!data->expectServerFail);
}
/*
* And the same for the client validation check
*/
if (qcrypto_tls_session_check_credentials(
clientSess, data->expectClientFail ? NULL : &error_abort) < 0) {
g_assert(data->expectClientFail);
} else {
g_assert(!data->expectClientFail);
}
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_CERT);
unlink(SERVER_CERT_DIR QCRYPTO_TLS_CREDS_X509_SERVER_KEY);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CA_CERT);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_CERT);
unlink(CLIENT_CERT_DIR QCRYPTO_TLS_CREDS_X509_CLIENT_KEY);
rmdir(CLIENT_CERT_DIR);
rmdir(SERVER_CERT_DIR);
object_unparent(OBJECT(serverCreds));
object_unparent(OBJECT(clientCreds));
object_unparent(OBJECT(auth));
qcrypto_tls_session_free(serverSess);
qcrypto_tls_session_free(clientSess);
close(channel[0]);
close(channel[1]);
}
int main(int argc, char **argv)
{
int ret;
module_call_init(MODULE_INIT_QOM);
g_test_init(&argc, &argv, NULL);
g_setenv("GNUTLS_FORCE_FIPS_MODE", "2", 1);
mkdir(WORKDIR, 0700);
test_tls_init(KEYFILE);
test_tls_psk_init(PSKFILE);
/* Simple initial test using Pre-Shared Keys. */
g_test_add_func("/qcrypto/tlssession/psk",
test_crypto_tls_session_psk);
/* More complex tests using X.509 certificates. */
# define TEST_SESS_REG(name, caCrt, \
serverCrt, clientCrt, \
expectServerFail, expectClientFail, \
hostname, wildcards) \
struct QCryptoTLSSessionTestData name = { \
caCrt, caCrt, serverCrt, clientCrt, \
expectServerFail, expectClientFail, \
hostname, wildcards \
}; \
g_test_add_data_func("/qcrypto/tlssession/" # name, \
&name, test_crypto_tls_session_x509); \
# define TEST_SESS_REG_EXT(name, serverCaCrt, clientCaCrt, \
serverCrt, clientCrt, \
expectServerFail, expectClientFail, \
hostname, wildcards) \
struct QCryptoTLSSessionTestData name = { \
serverCaCrt, clientCaCrt, serverCrt, clientCrt, \
expectServerFail, expectClientFail, \
hostname, wildcards \
}; \
g_test_add_data_func("/qcrypto/tlssession/" # name, \
&name, test_crypto_tls_session_x509); \
/* A perfect CA, perfect client & perfect server */
/* Basic:CA:critical */
TLS_ROOT_REQ(cacertreq,
"UK", "qemu CA", NULL, NULL, NULL, NULL,
true, true, true,
true, true, GNUTLS_KEY_KEY_CERT_SIGN,
false, false, NULL, NULL,
0, 0);
TLS_ROOT_REQ(altcacertreq,
"UK", "qemu CA 1", NULL, NULL, NULL, NULL,
true, true, true,
false, false, 0,
false, false, NULL, NULL,
0, 0);
TLS_CERT_REQ(servercertreq, cacertreq,
"UK", "qemu.org", NULL, NULL, NULL, NULL,
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
0, 0);
TLS_CERT_REQ(clientcertreq, cacertreq,
"UK", "qemu", NULL, NULL, NULL, NULL,
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL,
0, 0);
TLS_CERT_REQ(clientcertaltreq, altcacertreq,
"UK", "qemu", NULL, NULL, NULL, NULL,
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL,
0, 0);
TEST_SESS_REG(basicca, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
false, false, "qemu.org", NULL);
TEST_SESS_REG_EXT(differentca, cacertreq.filename,
altcacertreq.filename, servercertreq.filename,
clientcertaltreq.filename, true, true, "qemu.org", NULL);
/* When an altname is set, the CN is ignored, so it must be duplicated
* as an altname for it to match */
TLS_CERT_REQ(servercertalt1req, cacertreq,
"UK", "qemu.org", "www.qemu.org", "qemu.org",
"192.168.122.1", "fec0::dead:beaf",
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
0, 0);
/* This intentionally doesn't replicate */
TLS_CERT_REQ(servercertalt2req, cacertreq,
"UK", "qemu.org", "www.qemu.org", "wiki.qemu.org",
"192.168.122.1", "fec0::dead:beaf",
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
0, 0);
TEST_SESS_REG(altname1, cacertreq.filename,
servercertalt1req.filename, clientcertreq.filename,
false, false, "qemu.org", NULL);
TEST_SESS_REG(altname2, cacertreq.filename,
servercertalt1req.filename, clientcertreq.filename,
false, false, "www.qemu.org", NULL);
TEST_SESS_REG(altname3, cacertreq.filename,
servercertalt1req.filename, clientcertreq.filename,
false, true, "wiki.qemu.org", NULL);
TEST_SESS_REG(altname4, cacertreq.filename,
servercertalt2req.filename, clientcertreq.filename,
false, true, "qemu.org", NULL);
TEST_SESS_REG(altname5, cacertreq.filename,
servercertalt2req.filename, clientcertreq.filename,
false, false, "www.qemu.org", NULL);
TEST_SESS_REG(altname6, cacertreq.filename,
servercertalt2req.filename, clientcertreq.filename,
false, false, "wiki.qemu.org", NULL);
const char *const wildcards1[] = {
"C=UK,CN=dogfood",
NULL,
};
const char *const wildcards2[] = {
"C=UK,CN=qemu",
NULL,
};
const char *const wildcards3[] = {
"C=UK,CN=dogfood",
"C=UK,CN=qemu",
NULL,
};
const char *const wildcards4[] = {
"C=UK,CN=qemustuff",
NULL,
};
const char *const wildcards5[] = {
"C=UK,CN=qemu*",
NULL,
};
const char *const wildcards6[] = {
"C=UK,CN=*emu*",
NULL,
};
TEST_SESS_REG(wildcard1, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
true, false, "qemu.org", wildcards1);
TEST_SESS_REG(wildcard2, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
false, false, "qemu.org", wildcards2);
TEST_SESS_REG(wildcard3, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
false, false, "qemu.org", wildcards3);
TEST_SESS_REG(wildcard4, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
true, false, "qemu.org", wildcards4);
TEST_SESS_REG(wildcard5, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
false, false, "qemu.org", wildcards5);
TEST_SESS_REG(wildcard6, cacertreq.filename,
servercertreq.filename, clientcertreq.filename,
false, false, "qemu.org", wildcards6);
TLS_ROOT_REQ(cacertrootreq,
"UK", "qemu root", NULL, NULL, NULL, NULL,
true, true, true,
true, true, GNUTLS_KEY_KEY_CERT_SIGN,
false, false, NULL, NULL,
0, 0);
TLS_CERT_REQ(cacertlevel1areq, cacertrootreq,
"UK", "qemu level 1a", NULL, NULL, NULL, NULL,
true, true, true,
true, true, GNUTLS_KEY_KEY_CERT_SIGN,
false, false, NULL, NULL,
0, 0);
TLS_CERT_REQ(cacertlevel1breq, cacertrootreq,
"UK", "qemu level 1b", NULL, NULL, NULL, NULL,
true, true, true,
true, true, GNUTLS_KEY_KEY_CERT_SIGN,
false, false, NULL, NULL,
0, 0);
TLS_CERT_REQ(cacertlevel2areq, cacertlevel1areq,
"UK", "qemu level 2a", NULL, NULL, NULL, NULL,
true, true, true,
true, true, GNUTLS_KEY_KEY_CERT_SIGN,
false, false, NULL, NULL,
0, 0);
TLS_CERT_REQ(servercertlevel3areq, cacertlevel2areq,
"UK", "qemu.org", NULL, NULL, NULL, NULL,
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_SERVER, NULL,
0, 0);
TLS_CERT_REQ(clientcertlevel2breq, cacertlevel1breq,
"UK", "qemu client level 2b", NULL, NULL, NULL, NULL,
true, true, false,
true, true,
GNUTLS_KEY_DIGITAL_SIGNATURE | GNUTLS_KEY_KEY_ENCIPHERMENT,
true, true, GNUTLS_KP_TLS_WWW_CLIENT, NULL,
0, 0);
gnutls_x509_crt_t certchain[] = {
cacertrootreq.crt,
cacertlevel1areq.crt,
cacertlevel1breq.crt,
cacertlevel2areq.crt,
};
test_tls_write_cert_chain(WORKDIR "cacertchain-sess.pem",
certchain,
G_N_ELEMENTS(certchain));
TEST_SESS_REG(cachain, WORKDIR "cacertchain-sess.pem",
servercertlevel3areq.filename, clientcertlevel2breq.filename,
false, false, "qemu.org", NULL);
ret = g_test_run();
test_tls_discard_cert(&clientcertreq);
test_tls_discard_cert(&clientcertaltreq);
test_tls_discard_cert(&servercertreq);
test_tls_discard_cert(&servercertalt1req);
test_tls_discard_cert(&servercertalt2req);
test_tls_discard_cert(&cacertreq);
test_tls_discard_cert(&altcacertreq);
test_tls_discard_cert(&cacertrootreq);
test_tls_discard_cert(&cacertlevel1areq);
test_tls_discard_cert(&cacertlevel1breq);
test_tls_discard_cert(&cacertlevel2areq);
test_tls_discard_cert(&servercertlevel3areq);
test_tls_discard_cert(&clientcertlevel2breq);
unlink(WORKDIR "cacertchain-sess.pem");
test_tls_psk_cleanup(PSKFILE);
test_tls_cleanup(KEYFILE);
rmdir(WORKDIR);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
#else /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */
int
main(void)
{
return EXIT_SUCCESS;
}
#endif /* ! QCRYPTO_HAVE_TLS_TEST_SUPPORT */
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