diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/Makefile.am | 3 | ||||
| -rw-r--r-- | tests/send-data-before-handshake.c | 294 |
2 files changed, 296 insertions, 1 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index d0ce446390..6b0ffbcfbf 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -125,7 +125,8 @@ ctests = mini-record-2 simple gc set_pkcs12_cred cert certuniqueid \ set_known_dh_params_anon set_known_dh_params_psk session-tickets-ok \ session-tickets-missing set_x509_key_file_legacy status-request-ext \ rng-no-onload dtls1-2-mtu-check crl_apis cert_verify_inv_utf8 \ - hostname-check-utf8 pkcs8-key-decode-encrypted priority-mix pkcs7 + hostname-check-utf8 pkcs8-key-decode-encrypted priority-mix pkcs7 \ + send-data-before-handshake if HAVE_SECCOMP_TESTS ctests += dtls-with-seccomp tls-with-seccomp dtls-client-with-seccomp tls-client-with-seccomp diff --git a/tests/send-data-before-handshake.c b/tests/send-data-before-handshake.c new file mode 100644 index 0000000000..c127439c99 --- /dev/null +++ b/tests/send-data-before-handshake.c @@ -0,0 +1,294 @@ +/* + * Copyright (C) 2016 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 General Public License + * along with GnuTLS; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA + */ + +#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 "cert-common.h" +#include "utils.h" + +static void terminate(void); + +/* This program tests that a client cannot send any unencrypted data + * during the handshake process. That is to ensure we protect buggy clients + * from transmitting sensitive data over the wire. + */ + +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 int handshake_callback(gnutls_session_t session, unsigned int htype, + unsigned post, unsigned int incoming, const gnutls_datum_t *msg) +{ + int ret; + char c = 0; + + if (htype == GNUTLS_HANDSHAKE_FINISHED) + return 0; + + /* sending */ + ret = gnutls_record_send(session, &c, 1); + if (ret != GNUTLS_E_UNAVAILABLE_DURING_HANDSHAKE) { + fail("gnutls_record_send returned %s/%d at %s\n", gnutls_strerror(ret), ret, gnutls_handshake_description_get_name(htype)); + } else { + success("expected behavior after %s\n", gnutls_handshake_description_get_name(htype)); + } + + return 0; +} + + +#define MAX_BUF 1024 + +static void client(int fd) +{ + int ret; + char buffer[MAX_BUF + 1]; + gnutls_certificate_credentials_t x509_cred; + gnutls_session_t session; + /* Need to enable anonymous KX specifically. */ + + global_init(); + + 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); + + /* Use default priorities */ + gnutls_priority_set_direct(session, "NORMAL:-KX-ALL:+ECDHE-RSA", NULL); + + gnutls_handshake_set_hook_function(session, GNUTLS_HANDSHAKE_ANY, + GNUTLS_HOOK_PRE, + handshake_callback); + + 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 == GNUTLS_E_UNSUPPORTED_SIGNATURE_ALGORITHM) { + /* success */ + goto end; + } + + if (ret < 0) { + fail("client: Handshake failed: %s\n", gnutls_strerror(ret)); + terminate(); + } else { + if (debug) + success("client: Handshake was completed\n"); + } + + if (debug) + success("client: TLS version is: %s\n", + gnutls_protocol_get_name + (gnutls_protocol_get_version(session))); + + do { + do { + ret = gnutls_record_recv(session, buffer, MAX_BUF); + } while (ret == GNUTLS_E_AGAIN + || ret == GNUTLS_E_INTERRUPTED); + } while (ret > 0); + + if (ret == 0) { + if (debug) + success + ("client: Peer has closed the TLS connection\n"); + goto end; + } else if (ret < 0) { + fail("client: Error: %s\n", gnutls_strerror(ret)); + terminate(); + } + + gnutls_bye(session, GNUTLS_SHUT_WR); + + end: + + close(fd); + + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + + gnutls_global_deinit(); +} + + +/* These are global */ +pid_t child; + +static void terminate(void) +{ + kill(child, SIGTERM); + exit(1); +} + +static void server(int fd) +{ + int ret; + char buffer[MAX_BUF + 1]; + gnutls_session_t session; + gnutls_certificate_credentials_t x509_cred; + + /* 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(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); + + /* avoid calling all the priority functions, since the defaults + * are adequate. + */ + gnutls_priority_set_direct(session, "NORMAL", NULL); + + 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) { + /* failure is expected here */ + goto end; + } + + if (debug) { + success("server: Handshake was completed\n"); + } + + if (debug) + success("server: TLS version is: %s\n", + gnutls_protocol_get_name + (gnutls_protocol_get_version(session))); + + /* do not wait for the peer to close the connection. + */ + gnutls_bye(session, GNUTLS_SHUT_WR); + + end: + close(fd); + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + + gnutls_global_deinit(); + + if (debug) + success("server: finished\n"); +} + +static void ch_handler(int sig) +{ + return; +} + +void doit(void) +{ + int fd[2]; + int ret, status = 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]); + client(fd[0]); + waitpid(child, &status, 0); + check_wait_status(status); + } else { + close(fd[0]); + server(fd[1]); + exit(0); + } +} + +#endif /* _WIN32 */ |