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/*
* Copyright (C) 2016 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, see <https://www.gnu.org/licenses/>.
*/
/* Parts copied from GnuTLS example programs. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#if !defined(_WIN32)
#include <netinet/in.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#endif
#include <fcntl.h>
#include <unistd.h>
#include <assert.h>
#include <gnutls/gnutls.h>
#include <gnutls/x509.h>
#include "utils.h"
#include "cert-common.h"
/* Test for SSLKEYLOGFILE being functional.
*
*/
static void tls_log_func(int level, const char *str)
{
fprintf(stderr, "<%d>| %s", level, str);
}
/* In TLS 1.2, we only expect CLIENT_RANDOM. */
static const char *tls12_included_labels[] = { "CLIENT_RANDOM", NULL };
static const char *tls12_excluded_labels[] = { NULL };
/* In TLS 1.3, we expect secrets derived in handshake phases, but not
* CLIENT_RANDOM. */
static const char *tls13_included_labels[] = {
"CLIENT_HANDSHAKE_TRAFFIC_SECRET",
"SERVER_HANDSHAKE_TRAFFIC_SECRET",
"CLIENT_TRAFFIC_SECRET_0",
"SERVER_TRAFFIC_SECRET_0",
"EXPORTER_SECRET",
NULL
};
static const char *tls13_excluded_labels[] = { "CLIENT_RANDOM", NULL };
static void search_for_str(const char *filename, const char *label,
bool excluded)
{
char line[512];
FILE *fp = fopen(filename, "r");
char *p;
while ((p = fgets(line, sizeof(line), fp)) != NULL) {
success("%s", line);
if (strncmp(line, label, strlen(label)) == 0 &&
line[strlen(label)] == ' ') {
fclose(fp);
if (excluded)
fail("file should not contain %s\n", label);
return;
}
}
fclose(fp);
if (!excluded)
fail("file should contain %s\n", label);
}
static void run(const char *filename, const char *prio, const char **included,
const char **excluded)
{
gnutls_certificate_credentials_t x509_cred;
gnutls_certificate_credentials_t clicred;
const char **p;
int ret;
#ifdef _WIN32
{
char buf[512];
snprintf(buf, sizeof(buf), "SSLKEYLOGFILE=%s", filename);
_putenv(buf);
}
#else
setenv("SSLKEYLOGFILE", filename, 1);
#endif
if (debug) {
gnutls_global_set_log_level(6);
gnutls_global_set_log_function(tls_log_func);
}
/* test gnutls_certificate_flags() */
assert(gnutls_certificate_allocate_credentials(&x509_cred) >= 0);
assert(gnutls_certificate_allocate_credentials(&clicred) >= 0);
ret = gnutls_certificate_set_x509_key_mem(
x509_cred, &server_ca3_localhost_cert_chain, &server_ca3_key,
GNUTLS_X509_FMT_PEM);
if (ret < 0) {
fail("error in error code\n");
exit(1);
}
ret = gnutls_certificate_set_x509_trust_mem(clicred, &ca3_cert,
GNUTLS_X509_FMT_PEM);
if (ret < 0)
fail("set_x509_trust_file failed: %s\n", gnutls_strerror(ret));
test_cli_serv(x509_cred, clicred, prio, "localhost", NULL, NULL, NULL);
if (access(filename, R_OK) != 0) {
fail("keylog file was not created\n");
exit(1);
}
for (p = included; *p; p++)
search_for_str(filename, *p, false);
for (p = excluded; *p; p++)
search_for_str(filename, *p, true);
gnutls_certificate_free_credentials(x509_cred);
gnutls_certificate_free_credentials(clicred);
if (debug)
success("success");
}
void doit(void)
{
char filename[TMPNAME_SIZE];
global_init();
assert(get_tmpname(filename) != NULL);
remove(filename);
run(filename,
"NONE:+VERS-TLS1.2:+AES-128-CBC:+SHA1:+SIGN-ALL:+COMP-NULL:+RSA",
tls12_included_labels, tls12_excluded_labels);
/* This is needed because the SSLKEYLOGFILE envvar is checked
* only once and the file is never closed until the library is
* unloaded. Truncate the file to zero length, so we can
* reuse the same file for multiple tests. */
truncate(filename, 0);
run(filename,
"NONE:+VERS-TLS1.3:+AES-256-GCM:+AEAD:+SIGN-ALL:+GROUP-ALL",
tls13_included_labels, tls13_excluded_labels);
gnutls_global_deinit();
remove(filename);
}
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