/*
* SSL/TLS interface functions for GnuTLS
- * Copyright (c) 2004-2011, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2004-2017, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
}
+char * tls_connection_peer_serial_num(void *tls_ctx,
+ struct tls_connection *conn)
+{
+ /* TODO */
+ return NULL;
+}
+
+
int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
{
struct tls_global *global = ssl_ctx;
const struct tls_connection_params *params)
{
int ret;
+ const char *err;
+ char prio_buf[100];
+ const char *prio = NULL;
if (conn == NULL || params == NULL)
return -1;
conn->flags = params->flags;
+ if (params->flags & (TLS_CONN_DISABLE_TLSv1_0 |
+ TLS_CONN_DISABLE_TLSv1_1 |
+ TLS_CONN_DISABLE_TLSv1_2)) {
+ os_snprintf(prio_buf, sizeof(prio_buf),
+ "NORMAL:-VERS-SSL3.0%s%s%s",
+ params->flags & TLS_CONN_DISABLE_TLSv1_0 ?
+ ":-VERS-TLS1.0" : "",
+ params->flags & TLS_CONN_DISABLE_TLSv1_1 ?
+ ":-VERS-TLS1.1" : "",
+ params->flags & TLS_CONN_DISABLE_TLSv1_2 ?
+ ":-VERS-TLS1.2" : "");
+ prio = prio_buf;
+ }
+
if (params->openssl_ciphers) {
- wpa_printf(MSG_INFO, "GnuTLS: openssl_ciphers not supported");
+ if (os_strcmp(params->openssl_ciphers, "SUITEB128") == 0) {
+ prio = "SUITEB128";
+ } else if (os_strcmp(params->openssl_ciphers,
+ "SUITEB192") == 0) {
+ prio = "SUITEB192";
+ } else if ((params->flags & TLS_CONN_SUITEB) &&
+ os_strcmp(params->openssl_ciphers,
+ "ECDHE-RSA-AES256-GCM-SHA384") == 0) {
+ prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL";
+ } else if (os_strcmp(params->openssl_ciphers,
+ "ECDHE-RSA-AES256-GCM-SHA384") == 0) {
+ prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL";
+ } else if (os_strcmp(params->openssl_ciphers,
+ "DHE-RSA-AES256-GCM-SHA384") == 0) {
+ prio = "NONE:+VERS-TLS1.2:+AEAD:+DHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL:%PROFILE_HIGH";
+ } else if (os_strcmp(params->openssl_ciphers,
+ "ECDHE-ECDSA-AES256-GCM-SHA384") == 0) {
+ prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-ECDSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL";
+ } else {
+ wpa_printf(MSG_INFO,
+ "GnuTLS: openssl_ciphers not supported");
+ return -1;
+ }
+ } else if (params->flags & TLS_CONN_SUITEB) {
+ prio = "NONE:+VERS-TLS1.2:+AEAD:+ECDHE-ECDSA:+ECDHE-RSA:+DHE-RSA:+AES-256-GCM:+SIGN-RSA-SHA384:+CURVE-SECP384R1:+COMP-NULL:%PROFILE_HIGH";
+ }
+
+ if (prio) {
+ wpa_printf(MSG_DEBUG, "GnuTLS: Set priority string: %s", prio);
+ ret = gnutls_priority_set_direct(conn->session, prio, &err);
+ if (ret < 0) {
+ wpa_printf(MSG_ERROR,
+ "GnuTLS: Priority string failure at '%s'",
+ err);
+ return -1;
+ }
+ }
+
+ if (params->openssl_ecdh_curves) {
+ wpa_printf(MSG_INFO,
+ "GnuTLS: openssl_ecdh_curves not supported");
return -1;
}
gnutls_strerror(ret));
return -1;
}
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Successfully read CA cert '%s' in PEM format",
+ params->ca_cert);
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Successfully read CA cert '%s' in DER format",
+ params->ca_cert);
}
} else if (params->ca_cert_blob) {
gnutls_datum_t ca;
}
if (params->client_cert && params->private_key) {
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Try to parse client cert '%s' and key '%s' in DER format",
+ params->client_cert, params->private_key);
#if GNUTLS_VERSION_NUMBER >= 0x03010b
ret = gnutls_certificate_set_x509_key_file2(
conn->xcred, params->client_cert, params->private_key,
GNUTLS_X509_FMT_DER);
#endif
if (ret < 0) {
- wpa_printf(MSG_DEBUG, "Failed to read client cert/key "
- "in DER format: %s", gnutls_strerror(ret));
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Failed to read client cert/key in DER format (%s) - try in PEM format",
+ gnutls_strerror(ret));
#if GNUTLS_VERSION_NUMBER >= 0x03010b
ret = gnutls_certificate_set_x509_key_file2(
conn->xcred, params->client_cert,
gnutls_strerror(ret));
return ret;
}
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Successfully read client cert/key in PEM format");
+ } else {
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Successfully read client cert/key in DER format");
}
} else if (params->private_key) {
int pkcs12_ok = 0;
#ifdef PKCS12_FUNCS
/* Try to load in PKCS#12 format */
+ wpa_printf(MSG_DEBUG,
+ "GnuTLS: Try to parse client cert/key '%s'in PKCS#12 DER format",
+ params->private_key);
ret = gnutls_certificate_set_x509_simple_pkcs12_file(
conn->xcred, params->private_key, GNUTLS_X509_FMT_DER,
params->private_key_passwd);
struct tls_global *global = tls_ctx;
int ret;
+ if (params->check_cert_subject)
+ return -1; /* not yet supported */
+
/* Currently, global parameters are only set when running in server
* mode. */
global->server = 1;
}
-int tls_global_set_verify(void *ssl_ctx, int check_crl)
+int tls_global_set_verify(void *ssl_ctx, int check_crl, int strict)
{
/* TODO */
return 0;
int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn,
- const char *label, u8 *out, size_t out_len)
+ const char *label, const u8 *context,
+ size_t context_len, u8 *out, size_t out_len)
{
if (conn == NULL || conn->session == NULL)
return -1;
+#if GNUTLS_VERSION_NUMBER >= 0x030404
+ return gnutls_prf_rfc5705(conn->session, os_strlen(label), label,
+ context_len, (const char *) context,
+ out_len, (char *) out);
+#else /* 3.4.4 */
+ if (context)
+ return -1;
return gnutls_prf(conn->session, os_strlen(label), label,
0 /* client_random first */, 0, NULL, out_len,
(char *) out);
+#endif /* 3.4.4 */
}
}
+static int tls_match_suffix_helper(gnutls_x509_crt_t cert, const char *match,
+ int full)
+{
+ int res = -1;
+
+#if GNUTLS_VERSION_NUMBER >= 0x030300
+ if (full)
+ res = gnutls_x509_crt_check_hostname2(
+ cert, match,
+ GNUTLS_VERIFY_DO_NOT_ALLOW_WILDCARDS);
+#endif /* >= 3.3.0 */
+ if (res == -1)
+ res = gnutls_x509_crt_check_hostname(cert, match);
+
+ wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s --> res=%d",
+ full ? "": "suffix ", match, res);
+ return res;
+}
+
+
+static int tls_match_suffix(gnutls_x509_crt_t cert, const char *match,
+ int full)
+{
+ char *values, *token, *context = NULL;
+ int ret = 0;
+
+ if (!os_strchr(match, ';'))
+ return tls_match_suffix_helper(cert, match, full);
+
+ values = os_strdup(match);
+ if (!values)
+ return 0;
+
+ /* Process each match alternative separately until a match is found */
+ while ((token = str_token(values, ";", &context))) {
+ if (tls_match_suffix_helper(cert, token, full)) {
+ ret = 1;
+ break;
+ }
+ }
+
+ os_free(values);
+ return ret;
+}
+
+
static int tls_connection_verify_peer(gnutls_session_t session)
{
struct tls_connection *conn;
if (i == 0) {
if (conn->suffix_match &&
- !gnutls_x509_crt_check_hostname(
- cert, conn->suffix_match)) {
+ !tls_match_suffix(cert, conn->suffix_match, 0)) {
wpa_printf(MSG_WARNING,
"TLS: Domain suffix match '%s' not found",
conn->suffix_match);
#if GNUTLS_VERSION_NUMBER >= 0x030300
if (conn->domain_match &&
- !gnutls_x509_crt_check_hostname2(
- cert, conn->domain_match,
- GNUTLS_VERIFY_DO_NOT_ALLOW_WILDCARDS)) {
+ !tls_match_suffix(cert, conn->domain_match, 1)) {
wpa_printf(MSG_WARNING,
"TLS: Domain match '%s' not found",
conn->domain_match);
ret = gnutls_handshake(conn->session);
if (ret < 0) {
gnutls_alert_description_t alert;
+ union tls_event_data ev;
switch (ret) {
case GNUTLS_E_AGAIN:
conn->push_buf = wpabuf_alloc(0);
}
break;
+ case GNUTLS_E_DH_PRIME_UNACCEPTABLE:
+ wpa_printf(MSG_DEBUG, "GnuTLS: Unacceptable DH prime");
+ if (conn->global->event_cb) {
+ os_memset(&ev, 0, sizeof(ev));
+ ev.alert.is_local = 1;
+ ev.alert.type = "fatal";
+ ev.alert.description = "insufficient security";
+ conn->global->event_cb(conn->global->cb_ctx,
+ TLS_ALERT, &ev);
+ }
+ /*
+ * Could send a TLS Alert to the server, but for now,
+ * simply terminate handshake.
+ */
+ conn->failed++;
+ conn->write_alerts++;
+ break;
case GNUTLS_E_FATAL_ALERT_RECEIVED:
alert = gnutls_alert_get(conn->session);
wpa_printf(MSG_DEBUG, "%s - received fatal '%s' alert",
__func__, gnutls_alert_get_name(alert));
conn->read_alerts++;
if (conn->global->event_cb != NULL) {
- union tls_event_data ev;
-
os_memset(&ev, 0, sizeof(ev));
ev.alert.is_local = 0;
ev.alert.type = gnutls_alert_get_name(alert);
int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
char *buf, size_t buflen)
{
- /* TODO */
- return -1;
+ gnutls_protocol_t ver;
+
+ ver = gnutls_protocol_get_version(conn->session);
+ if (ver == GNUTLS_TLS1_0)
+ os_strlcpy(buf, "TLSv1", buflen);
+ else if (ver == GNUTLS_TLS1_1)
+ os_strlcpy(buf, "TLSv1.1", buflen);
+ else if (ver == GNUTLS_TLS1_2)
+ os_strlcpy(buf, "TLSv1.2", buflen);
+ else
+ return -1;
+ return 0;
}
int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
char *buf, size_t buflen)
{
- /* TODO */
- buf[0] = '\0';
+ gnutls_cipher_algorithm_t cipher;
+ gnutls_kx_algorithm_t kx;
+ gnutls_mac_algorithm_t mac;
+ const char *kx_str, *cipher_str, *mac_str;
+ int res;
+
+ cipher = gnutls_cipher_get(conn->session);
+ cipher_str = gnutls_cipher_get_name(cipher);
+ if (!cipher_str)
+ cipher_str = "";
+
+ kx = gnutls_kx_get(conn->session);
+ kx_str = gnutls_kx_get_name(kx);
+ if (!kx_str)
+ kx_str = "";
+
+ mac = gnutls_mac_get(conn->session);
+ mac_str = gnutls_mac_get_name(mac);
+ if (!mac_str)
+ mac_str = "";
+
+ if (kx == GNUTLS_KX_RSA)
+ res = os_snprintf(buf, buflen, "%s-%s", cipher_str, mac_str);
+ else
+ res = os_snprintf(buf, buflen, "%s-%s-%s",
+ kx_str, cipher_str, mac_str);
+ if (os_snprintf_error(buflen, res))
+ return -1;
+
return 0;
}
projects / thirdparty / hostap.git / blobdiff