diff options
author | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2015-08-01 17:03:33 +0200 |
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committer | Nikos Mavrogiannopoulos <nmav@gnutls.org> | 2015-08-01 17:04:30 +0200 |
commit | 1cca0461d28cb74646f9443d547e5d0ed325d7fc (patch) | |
tree | 77f79564de7e86a51ff5c59edcd55c50369fd92c | |
parent | 20a98e817713764b9df5306286091df1b61190d9 (diff) | |
download | gnutls-1cca0461d28cb74646f9443d547e5d0ed325d7fc.tar.gz |
tests: added check for the fallback SCSV
-rw-r--r-- | tests/Makefile.am | 2 | ||||
-rw-r--r-- | tests/fallback-scsv.c | 358 |
2 files changed, 359 insertions, 1 deletions
diff --git a/tests/Makefile.am b/tests/Makefile.am index 4c3f6835fa..c24eea4e13 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -88,7 +88,7 @@ ctests = mini-record-2 simple gc set_pkcs12_cred certder certuniqueid \ mini-record-retvals mini-server-name mini-etm mini-x509-cert-callback \ sign-md5-rep keygen mini-tls-nonblock no-signal pkcs7-gen \ x509sign-verify2 mini-alignment oids atfork prf \ - status-request status-request-ok + status-request status-request-ok fallback-scsv mini_dtls_pthread_LDADD = $(LDADD) -lpthread diff --git a/tests/fallback-scsv.c b/tests/fallback-scsv.c new file mode 100644 index 0000000000..80b918c6b1 --- /dev/null +++ b/tests/fallback-scsv.c @@ -0,0 +1,358 @@ +/* + * Copyright (C) 2015 Nikos Mavrogiannopoulos + * + * 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 "utils.h" + +static void terminate(void); + +/* This program tests whether EtM is negotiated as expected. + */ + +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 char server_cert_pem[] = + "-----BEGIN CERTIFICATE-----\n" + "MIICVjCCAcGgAwIBAgIERiYdMTALBgkqhkiG9w0BAQUwGTEXMBUGA1UEAxMOR251\n" + "VExTIHRlc3QgQ0EwHhcNMDcwNDE4MTMyOTIxWhcNMDgwNDE3MTMyOTIxWjA3MRsw\n" + "GQYDVQQKExJHbnVUTFMgdGVzdCBzZXJ2ZXIxGDAWBgNVBAMTD3Rlc3QuZ251dGxz\n" + "Lm9yZzCBnDALBgkqhkiG9w0BAQEDgYwAMIGIAoGA17pcr6MM8C6pJ1aqU46o63+B\n" + "dUxrmL5K6rce+EvDasTaDQC46kwTHzYWk95y78akXrJutsoKiFV1kJbtple8DDt2\n" + "DZcevensf9Op7PuFZKBroEjOd35znDET/z3IrqVgbtm2jFqab7a+n2q9p/CgMyf1\n" + "tx2S5Zacc1LWn9bIjrECAwEAAaOBkzCBkDAMBgNVHRMBAf8EAjAAMBoGA1UdEQQT\n" + "MBGCD3Rlc3QuZ251dGxzLm9yZzATBgNVHSUEDDAKBggrBgEFBQcDATAPBgNVHQ8B\n" + "Af8EBQMDB6AAMB0GA1UdDgQWBBTrx0Vu5fglyoyNgw106YbU3VW0dTAfBgNVHSME\n" + "GDAWgBTpPBz7rZJu5gakViyi4cBTJ8jylTALBgkqhkiG9w0BAQUDgYEAaFEPTt+7\n" + "bzvBuOf7+QmeQcn29kT6Bsyh1RHJXf8KTk5QRfwp6ogbp94JQWcNQ/S7YDFHglD1\n" + "AwUNBRXwd3riUsMnsxgeSDxYBfJYbDLeohNBsqaPDJb7XailWbMQKfAbFQ8cnOxg\n" + "rOKLUQRWJ0K3HyXRMhbqjdLIaQiCvQLuizo=\n" "-----END CERTIFICATE-----\n"; + +const gnutls_datum_t server_cert = { server_cert_pem, + sizeof(server_cert_pem) +}; + +static unsigned char server_key_pem[] = + "-----BEGIN RSA PRIVATE KEY-----\n" + "MIICXAIBAAKBgQDXulyvowzwLqknVqpTjqjrf4F1TGuYvkrqtx74S8NqxNoNALjq\n" + "TBMfNhaT3nLvxqResm62ygqIVXWQlu2mV7wMO3YNlx696ex/06ns+4VkoGugSM53\n" + "fnOcMRP/PciupWBu2baMWppvtr6far2n8KAzJ/W3HZLllpxzUtaf1siOsQIDAQAB\n" + "AoGAYAFyKkAYC/PYF8e7+X+tsVCHXppp8AoP8TEZuUqOZz/AArVlle/ROrypg5kl\n" + "8YunrvUdzH9R/KZ7saNZlAPLjZyFG9beL/am6Ai7q7Ma5HMqjGU8kTEGwD7K+lbG\n" + "iomokKMOl+kkbY/2sI5Czmbm+/PqLXOjtVc5RAsdbgvtmvkCQQDdV5QuU8jap8Hs\n" + "Eodv/tLJ2z4+SKCV2k/7FXSKWe0vlrq0cl2qZfoTUYRnKRBcWxc9o92DxK44wgPi\n" + "oMQS+O7fAkEA+YG+K9e60sj1K4NYbMPAbYILbZxORDecvP8lcphvwkOVUqbmxOGh\n" + "XRmTZUuhBrJhJKKf6u7gf3KWlPl6ShKEbwJASC118cF6nurTjuLf7YKARDjNTEws\n" + "qZEeQbdWYINAmCMj0RH2P0mvybrsXSOD5UoDAyO7aWuqkHGcCLv6FGG+qwJAOVqq\n" + "tXdUucl6GjOKKw5geIvRRrQMhb/m5scb+5iw8A4LEEHPgGiBaF5NtJZLALgWfo5n\n" + "hmC8+G8F0F78znQtPwJBANexu+Tg5KfOnzSILJMo3oXiXhf5PqXIDmbN0BKyCKAQ\n" + "LfkcEcUbVfmDaHpvzwY9VEaoMOKVLitETXdNSxVpvWM=\n" + "-----END RSA PRIVATE KEY-----\n"; + +const gnutls_datum_t server_key = { server_key_pem, + sizeof(server_key_pem) +}; + +/* This tests whether the fallback SCSV is working as intended. + */ + +#define MAX_BUF 1024 + +static void client(int fd, const char *prio, unsigned expect_fail) +{ + int ret; + char buffer[MAX_BUF + 1]; + gnutls_certificate_credentials_t x509_cred; + gnutls_session_t session; + + 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, prio, NULL); + + 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 (expect_fail) { + goto end; + } + + if (ret < 0) { + fail("client: Handshake failed\n"); + gnutls_perror(ret); + exit(1); + } 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) { + if (ret != 0) { + fail("client: Error: %s\n", gnutls_strerror(ret)); + exit(1); + } + } + + 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, const char *prio, unsigned expect_fail) +{ + int ret; + char buffer[MAX_BUF + 1]; + gnutls_session_t session; + gnutls_certificate_credentials_t x509_cred; + unsigned to_send = sizeof(buffer)/4; + + /* 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, prio, 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 (expect_fail) { + if (ret == GNUTLS_E_INAPPROPRIATE_FALLBACK) { + if (debug) + success("server: received inappropriate fallback error\n"); + goto cleanup; + } else { + fail("server: received unexpected error: %s\n", gnutls_strerror(ret)); + } + } + + if (ret < 0) { + close(fd); + gnutls_deinit(session); + fail("server: Handshake has failed (%s)\n\n", + gnutls_strerror(ret)); + terminate(); + } + + 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 { + do { + ret = + gnutls_record_send(session, buffer, + sizeof(buffer)); + } while (ret == GNUTLS_E_AGAIN + || ret == GNUTLS_E_INTERRUPTED); + + if (ret < 0) { + fail("Error sending %d byte packet: %s\n", to_send, + gnutls_strerror(ret)); + terminate(); + } + to_send++; + } + while (to_send < 64); + + to_send = -1; + /* do not wait for the peer to close the connection. + */ + gnutls_bye(session, GNUTLS_SHUT_WR); + cleanup: + close(fd); + gnutls_deinit(session); + + gnutls_certificate_free_credentials(x509_cred); + + gnutls_global_deinit(); + + if (debug) + success("server: finished\n"); +} + +static void start(const char *server_prio, const char *cli_prio, unsigned expect_fail) +{ + int fd[2]; + int ret, status = 0; + + 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], server_prio, expect_fail); + waitpid(child, &status, 0); + if (WEXITSTATUS(status) != 0 || + (WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV)) { + if (WIFSIGNALED(status)) + fail("Child died with sigsegv\n"); + else + fail("Child died with status %d\n", + WEXITSTATUS(status)); + } + } else { + close(fd[0]); + client(fd[1], cli_prio, expect_fail); + exit(0); + } +} + +static void ch_handler(int sig) +{ + return; +} + +void doit(void) +{ + signal(SIGCHLD, ch_handler); + signal(SIGPIPE, SIG_IGN); + + start("NORMAL", "NORMAL", 0); + start("NORMAL", "NORMAL:%FALLBACK_SCSV", 0); + start("NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1", "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1:%FALLBACK_SCSV", 0); + start("NORMAL", "NORMAL:-VERS-TLS-ALL:+VERS-TLS1.1:%FALLBACK_SCSV", 1); +} + +#endif /* _WIN32 */ |