diff options
Diffstat (limited to 'tests/tls13/change_cipher_spec.c')
| -rw-r--r-- | tests/tls13/change_cipher_spec.c | 344 |
1 files changed, 344 insertions, 0 deletions
diff --git a/tests/tls13/change_cipher_spec.c b/tests/tls13/change_cipher_spec.c new file mode 100644 index 0000000000..23519d9fd4 --- /dev/null +++ b/tests/tls13/change_cipher_spec.c @@ -0,0 +1,344 @@ +/* + * Copyright (C) 2017 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 <http://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 <errno.h> + +#include "cert-common.h" +#include "utils.h" + +/* This program tests whether the ChangeCipherSpec message + * is ignored during handshake. + */ + +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); +} + +static unsigned client_sent_ccs = 0; +static unsigned server_sent_ccs = 0; + +static int cli_hsk_callback(gnutls_session_t session, unsigned int htype, + unsigned post, unsigned int incoming, const gnutls_datum_t *msg); + +static void client(int fd, unsigned ccs_check) +{ + int ret; + gnutls_certificate_credentials_t x509_cred; + gnutls_session_t session; + char buf[64]; + + global_init(); + client_sent_ccs = 0; + server_sent_ccs = 0; + + if (debug) { + gnutls_global_set_log_function(client_log_func); + gnutls_global_set_log_level(7); + } + + gnutls_certificate_allocate_credentials(&x509_cred); + + /* Initialize TLS session + */ + gnutls_init(&session, GNUTLS_CLIENT|GNUTLS_POST_HANDSHAKE_AUTH); + + gnutls_session_set_ptr(session, &ccs_check); + gnutls_handshake_set_timeout(session, 20 * 1000); + if (ccs_check) { + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY, + GNUTLS_HOOK_PRE, + cli_hsk_callback); + } + + ret = gnutls_priority_set_direct(session, "NORMAL:-VERS-ALL:+VERS-TLS1.3:+VERS-TLS1.2:+VERS-TLS1.0", NULL); + if (ret < 0) + fail("cannot set TLS 1.3 priorities\n"); + + + gnutls_certificate_set_x509_key_mem(x509_cred, &cli_ca3_cert, + &cli_ca3_key, + GNUTLS_X509_FMT_PEM); + + /* put the anonymous credentials to the current session + */ + gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); + + 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)); + success("client handshake completed\n"); + + do { + ret = gnutls_record_recv(session, buf, sizeof(buf)); + } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED); + + if (ret < 0) + fail("client: recv did not succeed as expected: %s\n", gnutls_strerror(ret)); + + close(fd); + + gnutls_deinit(session); + + if (ccs_check) { + if (client_sent_ccs != 1) { + fail("client: did not sent CCS\n"); + } + } + + gnutls_certificate_free_credentials(x509_cred); + + gnutls_global_deinit(); +} + +static int cli_hsk_callback(gnutls_session_t session, unsigned int htype, + unsigned post, unsigned int incoming, const gnutls_datum_t *msg) +{ + unsigned *p; + unsigned ccs_check; + static unsigned hello_received = 0; + + p = gnutls_session_get_ptr(session); + ccs_check = *p; + + assert(ccs_check != 0); + assert(post == GNUTLS_HOOK_PRE); + + if (htype == GNUTLS_HANDSHAKE_CLIENT_HELLO && !incoming) { + hello_received = 1; + + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_CHANGE_CIPHER_SPEC, + GNUTLS_HOOK_PRE, + cli_hsk_callback); + } + + if (htype == GNUTLS_HANDSHAKE_CHANGE_CIPHER_SPEC && !incoming && hello_received) { + client_sent_ccs++; + assert(msg->size == 1 && msg->data[0] == 0x01); + } + + + return 0; +} + +static int hsk_callback(gnutls_session_t session, unsigned int htype, + unsigned post, unsigned int incoming, const gnutls_datum_t *msg) +{ + int ret; + int fd; + unsigned *p; + unsigned ccs_check; + + p = gnutls_session_get_ptr(session); + ccs_check = *p; + + assert(post == GNUTLS_HOOK_PRE); + + if (!ccs_check) { + if (!incoming || htype == GNUTLS_HANDSHAKE_CLIENT_HELLO || + htype == GNUTLS_HANDSHAKE_FINISHED) + return 0; + + fd = gnutls_transport_get_int(session); + + /* send change cipher spec */ + do { + ret = send(fd, "\x14\x03\x03\x00\x01\x01", 6, 0); + } while(ret == -1 && (errno == EINTR || errno == EAGAIN)); + } else { /* checking whether server received it */ + if (htype == GNUTLS_HANDSHAKE_CHANGE_CIPHER_SPEC && !incoming) { + server_sent_ccs++; + assert(msg->size == 1 && msg->data[0] == 0x01); + } + } + return 0; +} + +static void server(int fd, unsigned ccs_check) +{ + int ret; + gnutls_session_t session; + gnutls_certificate_credentials_t x509_cred; + + /* this must be called once in the program + */ + global_init(); + + client_sent_ccs = 0; + server_sent_ccs = 0; + + if (debug) { + gnutls_global_set_log_function(server_log_func); + gnutls_global_set_log_level(4711); + } + + gnutls_certificate_allocate_credentials(&x509_cred); + gnutls_certificate_set_x509_key_mem(x509_cred, &server_cert, + &server_key, + GNUTLS_X509_FMT_PEM); + + gnutls_init(&session, GNUTLS_SERVER); + + gnutls_handshake_set_timeout(session, 20 * 1000); + + if (ccs_check) + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_CHANGE_CIPHER_SPEC, + GNUTLS_HOOK_PRE, + hsk_callback); + else + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY, + GNUTLS_HOOK_PRE, + hsk_callback); + + /* avoid calling all the priority functions, since the defaults + * are adequate. + */ + assert(gnutls_priority_set_direct(session, "NORMAL:+VERS-TLS1.3", NULL) >= 0); + gnutls_session_set_ptr(session, &ccs_check); + + gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, x509_cred); + + 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)); + + success("server handshake completed\n"); + + gnutls_certificate_server_set_request(session, GNUTLS_CERT_REQUIRE); + /* ask peer for re-authentication */ + do { + ret = gnutls_record_send(session, "\x00", 1); + } while (ret == GNUTLS_E_AGAIN || ret == GNUTLS_E_INTERRUPTED); + + if (ret < 0) + fail("server: gnutls_record_send did not succeed as expected: %s\n", gnutls_strerror(ret)); + + close(fd); + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + + if (ccs_check) { + if (server_sent_ccs != 1) { + fail("server: did not sent CCS\n"); + } + } + + gnutls_global_deinit(); + + if (debug) + success("server: client/server hello were verified\n"); +} + +static void ch_handler(int sig) +{ + int status; + wait(&status); + check_wait_status(status); + return; +} + +static +void start(unsigned ccs_check) +{ + int fd[2]; + int ret; + pid_t child; + + signal(SIGCHLD, ch_handler); + + 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], ccs_check); + kill(child, SIGTERM); + } else { + close(fd[0]); + client(fd[1], ccs_check); + exit(0); + } +} + +void doit(void) +{ + start(0); + start(1); +} + +#endif /* _WIN32 */ |