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Diffstat (limited to '')
| -rw-r--r-- | tests/tls13/post-handshake-with-psk.c | 367 |
1 files changed, 367 insertions, 0 deletions
diff --git a/tests/tls13/post-handshake-with-psk.c b/tests/tls13/post-handshake-with-psk.c new file mode 100644 index 0000000..8921bbd --- /dev/null +++ b/tests/tls13/post-handshake-with-psk.c @@ -0,0 +1,367 @@ +/* + * Copyright (C) 2017-2018 Red Hat, Inc. + * + * Author: Nikos Mavrogiannopoulos + * + * This file is part of GnuTLS. + * + * GnuTLS is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * GnuTLS 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 + * 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 <https://www.gnu.org/licenses/> + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <stdlib.h> + +#if defined(_WIN32) + +int main() +{ + exit(77); +} + +#else + +#include <string.h> +#include <sys/types.h> +#include <netinet/in.h> +#include <sys/socket.h> +#include <sys/wait.h> +#include <arpa/inet.h> +#include <unistd.h> +#include <gnutls/gnutls.h> +#include <gnutls/dtls.h> +#include <signal.h> +#include <assert.h> + +#include "cert-common.h" +#include "tls13/ext-parse.h" +#include "utils.h" + +#define MAX_AUTHS 4 + +/* This program tests whether the Post Handshake Auth would work + * under PSK authentication. */ + +static void server_log_func(int level, const char *str) +{ + fprintf(stderr, "server|<%d>| %s", level, str); +} + +static void client_log_func(int level, const char *str) +{ + fprintf(stderr, "client|<%d>| %s", level, str); +} + +#define MAX_BUF 1024 + +static void client(int fd, unsigned send_cert, unsigned max_auths) +{ + int ret; + gnutls_certificate_credentials_t x509_cred; + gnutls_psk_client_credentials_t pskcred; + const gnutls_datum_t key = { (void *) "DEADBEEF", 8 }; + gnutls_session_t session; + char buf[64]; + unsigned i; + + global_init(); + + if (debug) { + gnutls_global_set_log_function(client_log_func); + gnutls_global_set_log_level(7); + } + + assert(gnutls_psk_allocate_client_credentials(&pskcred)>=0); + assert(gnutls_psk_set_client_credentials(pskcred, "test", &key, + GNUTLS_PSK_KEY_HEX)>=0); + + assert(gnutls_certificate_allocate_credentials(&x509_cred)>=0); + + /* Initialize TLS session + */ + assert(gnutls_init(&session, GNUTLS_CLIENT|GNUTLS_POST_HANDSHAKE_AUTH)>=0); + + gnutls_handshake_set_timeout(session, get_timeout()); + + ret = gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.2:+VERS-TLS1.0:+ECDHE-PSK:+PSK", NULL); + if (ret < 0) + fail("cannot set TLS 1.3 priorities\n"); + + + if (send_cert) { + assert(gnutls_certificate_set_x509_key_mem(x509_cred, &cli_ca3_cert, + &cli_ca3_key, + GNUTLS_X509_FMT_PEM)>=0); + } + + gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); + gnutls_credentials_set(session, GNUTLS_CRD_PSK, pskcred); + + gnutls_transport_set_int(session, fd); + + /* Perform the TLS handshake + */ + do { + ret = gnutls_handshake(session); + } + while (ret < 0 && gnutls_error_is_fatal(ret) == 0); + + if (ret != 0) + fail("handshake failed: %s\n", gnutls_strerror(ret)); + + if (debug) + success("client handshake completed\n"); + + assert(gnutls_kx_get(session) == GNUTLS_KX_ECDHE_PSK); + + gnutls_record_set_timeout(session, 20 * 1000); + + for (i=0;i<max_auths;i++) { + if (debug) + success("waiting for post-handshake auth request\n"); + do { + ret = gnutls_record_recv(session, buf, sizeof(buf)); + } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED); + + if (ret != GNUTLS_E_REAUTH_REQUEST) { + fail("recv: unexpected error: %s\n", gnutls_strerror(ret)); + } + + if (debug) + success("received reauth request\n"); + do { + ret = gnutls_reauth(session, 0); + } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED); + + if (ret != 0) + fail("client: gnutls_reauth did not succeed as expected: %s\n", gnutls_strerror(ret)); + } + + + close(fd); + + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + gnutls_psk_free_client_credentials(pskcred); + + gnutls_global_deinit(); +} + +static unsigned client_hello_ok = 0; +static unsigned server_hello_ok = 0; + +#define TLS_EXT_POST_HANDSHAKE 49 + +static void parse_ext(void *priv, gnutls_datum_t *msg) +{ + if (msg->size != 0) { + fail("error in extension length: %d\n", (int)msg->size); + } +} + +static int hellos_callback(gnutls_session_t session, unsigned int htype, + unsigned post, unsigned int incoming, const gnutls_datum_t *msg) +{ + if (htype == GNUTLS_HANDSHAKE_SERVER_HELLO && post == GNUTLS_HOOK_POST) { + if (find_server_extension(msg, TLS_EXT_POST_HANDSHAKE, NULL, NULL)) { + fail("Post handshake extension seen in server hello!\n"); + } + server_hello_ok = 1; + + return GNUTLS_E_INTERRUPTED; + } + + if (htype != GNUTLS_HANDSHAKE_CLIENT_HELLO || post != GNUTLS_HOOK_PRE) + return 0; + + if (find_client_extension(msg, TLS_EXT_POST_HANDSHAKE, NULL, parse_ext)) + client_hello_ok = 1; + else + fail("Post handshake extension NOT seen in client hello!\n"); + + return 0; +} + +static int +pskfunc(gnutls_session_t session, const char *username, + gnutls_datum_t * key) +{ + if (debug) + printf("psk: username %s\n", username); + key->data = gnutls_malloc(4); + key->data[0] = 0xDE; + key->data[1] = 0xAD; + key->data[2] = 0xBE; + key->data[3] = 0xEF; + key->size = 4; + return 0; +} + +static void server(int fd, int err, int type, unsigned max_auths) +{ + int ret; + char buffer[MAX_BUF + 1]; + gnutls_session_t session; + gnutls_certificate_credentials_t x509_cred; + gnutls_psk_server_credentials_t server_pskcred; + unsigned i; + + /* this must be called once in the program + */ + global_init(); + memset(buffer, 0, sizeof(buffer)); + + if (debug) { + gnutls_global_set_log_function(server_log_func); + gnutls_global_set_log_level(6); + } + + assert(gnutls_psk_allocate_server_credentials(&server_pskcred)>=0); + gnutls_psk_set_server_credentials_function(server_pskcred, + pskfunc); + + assert(gnutls_certificate_allocate_credentials(&x509_cred)>=0); + assert(gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert, + &server_key, + GNUTLS_X509_FMT_PEM) >= 0); + + assert(gnutls_init(&session, GNUTLS_SERVER|GNUTLS_POST_HANDSHAKE_AUTH)>=0); + + gnutls_handshake_set_timeout(session, get_timeout()); + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY, + GNUTLS_HOOK_BOTH, + hellos_callback); + + assert(gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.3:+PSK:+ECDHE-PSK", NULL)>=0); + + gnutls_credentials_set(session, GNUTLS_CRD_PSK, server_pskcred); + + gnutls_transport_set_int(session, fd); + + do { + ret = gnutls_handshake(session); + } while (ret < 0 && gnutls_error_is_fatal(ret) == 0); + + if (ret != 0) + fail("handshake failed: %s\n", gnutls_strerror(ret)); + + if (!(gnutls_session_get_flags(session) & GNUTLS_SFLAGS_POST_HANDSHAKE_AUTH)) { + fail("server: session flags did not contain GNUTLS_SFLAGS_POST_HANDSHAKE_AUTH\n"); + } + + + if (client_hello_ok == 0) { + fail("server: did not verify the client hello\n"); + } + + if (server_hello_ok == 0) { + fail("server: did not verify the server hello contents\n"); + } + + if (debug) + success("server handshake completed\n"); + + gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); + gnutls_certificate_server_set_request(session, type); + + for (i=0;i<max_auths;i++) { + /* ask peer for re-authentication */ + do { + ret = gnutls_reauth(session, 0); + } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED); + + if (err) { + if (ret != err) + fail("server: expected error %s, got: %s\n", gnutls_strerror(err), + gnutls_strerror(ret)); + } else if (ret != 0) { + fail("server: gnutls_reauth did not succeed as expected: %s\n", gnutls_strerror(ret)); + } + + if (debug) + success("server: sent post-handshake auth request\n"); + } + + close(fd); + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + gnutls_psk_free_server_credentials(server_pskcred); + + gnutls_global_deinit(); + + if (debug) + success("server: client/server hello were verified\n"); +} + +static void ch_handler(int sig) +{ + int status = 0; + wait(&status); + check_wait_status(status); + return; +} + +static +void start(const char *name, int err, int type, unsigned max_auths, unsigned send_cert) +{ + int fd[2]; + int ret; + pid_t child; + + success("testing %s\n", name); + + client_hello_ok = 0; + server_hello_ok = 0; + + signal(SIGCHLD, ch_handler); + signal(SIGPIPE, SIG_IGN); + + ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fd); + if (ret < 0) { + perror("socketpair"); + exit(1); + } + + child = fork(); + if (child < 0) { + perror("fork"); + fail("fork"); + exit(1); + } + + if (child) { + /* parent */ + close(fd[1]); + server(fd[0], err, type, max_auths); + kill(child, SIGTERM); + } else { + close(fd[0]); + client(fd[1], send_cert, max_auths); + exit(0); + } + +} + +void doit(void) +{ + start("multi-reauth", 0, GNUTLS_CERT_REQUIRE, MAX_AUTHS, 1); + start("reauth-require with no-cert", GNUTLS_E_CERTIFICATE_REQUIRED, GNUTLS_CERT_REQUIRE, 1, 0); + start("reauth-request with no-cert", 0, GNUTLS_CERT_REQUEST, 1, 0); +} +#endif /* _WIN32 */ |