#if GNUTLS_VERSION_NUMBER >= 0x03010a
# define SUPPORT_GNUTLS_SESS_DESC
#endif
+#if GNUTLS_VERSION_NUMBER >= 0x030300
+# define GNUTLS_AUTO_GLOBAL_INIT
+# define GNUTLS_AUTO_PKCS11_MANUAL
+#endif
+#if (GNUTLS_VERSION_NUMBER >= 0x030404) \
+ || (GNUTLS_VERSION_NUMBER >= 0x030311) && (GNUTLS_VERSION_NUMBER & 0xffff00 == 0x030300)
+# ifndef DISABLE_OCSP
+# define EXIM_HAVE_OCSP
+# endif
+#endif
#if GNUTLS_VERSION_NUMBER >= 0x030500
# define SUPPORT_GNUTLS_KEYLOG
#endif
#if GNUTLS_VERSION_NUMBER >= 0x030506 && !defined(DISABLE_OCSP)
# define SUPPORT_SRV_OCSP_STACK
#endif
+#if GNUTLS_VERSION_NUMBER >= 0x030600
+# define GNUTLS_AUTO_DHPARAMS
+#endif
#if GNUTLS_VERSION_NUMBER >= 0x030603
# define EXIM_HAVE_TLS1_3
# define SUPPORT_GNUTLS_EXT_RAW_PARSE
# ifdef EXIM_HAVE_TLS1_3
builtin_macro_create(US"_HAVE_TLS1_3");
# endif
+# ifdef EXIM_HAVE_OCSP
+builtin_macro_create(US"_HAVE_TLS_OCSP");
+# endif
+# ifdef SUPPORT_SRV_OCSP_STACK
+builtin_macro_create(US"_HAVE_TLS_OCSP_LIST");
+# endif
}
#else
static exim_gnutls_state_st state_server;
+#ifndef GNUTLS_AUTO_DHPARAMS
/* dh_params are initialised once within the lifetime of a process using TLS;
if we used TLS in a long-lived daemon, we'd have to reconsider this. But we
don't want to repeat this. */
static gnutls_dh_params_t dh_server_params = NULL;
+#endif
static int ssl_session_timeout = 7200; /* Two hours */
+#ifndef GNUTLS_AUTO_DHPARAMS
/*************************************************
* Setup up DH parameters *
*************************************************/
{
int fd, rc;
unsigned int dh_bits;
-gnutls_datum_t m;
+gnutls_datum_t m = {.data = NULL, .size = 0};
uschar filename_buf[PATH_MAX];
uschar *filename = NULL;
size_t sz;
if ((rc = gnutls_dh_params_init(&dh_server_params)))
return tls_error_gnu(US"gnutls_dh_params_init", rc, host, errstr);
-m.data = NULL;
-m.size = 0;
-
if (!expand_check(tls_dhparam, US"tls_dhparam", &exp_tls_dhparam, errstr))
return DEFER;
return tls_error_sys(US"Unable to open temp file", errno, NULL, errstr);
(void)exim_chown(temp_fn, exim_uid, exim_gid); /* Probably not necessary */
- /* GnuTLS overshoots!
- * If we ask for 2236, we might get 2237 or more.
- * But there's no way to ask GnuTLS how many bits there really are.
- * We can ask how many bits were used in a TLS session, but that's it!
- * The prime itself is hidden behind too much abstraction.
- * So we ask for less, and proceed on a wing and a prayer.
- * First attempt, subtracted 3 for 2233 and got 2240.
- */
+ /* GnuTLS overshoots! If we ask for 2236, we might get 2237 or more. But
+ there's no way to ask GnuTLS how many bits there really are. We can ask
+ how many bits were used in a TLS session, but that's it! The prime itself
+ is hidden behind too much abstraction. So we ask for less, and proceed on
+ a wing and a prayer. First attempt, subtracted 3 for 2233 and got 2240. */
+
if (dh_bits >= EXIM_CLIENT_DH_MIN_BITS + 10)
{
dh_bits_gen = dh_bits - 10;
DEBUG(D_tls) debug_printf("initialized server D-H parameters\n");
return OK;
}
+#endif
int rc;
const host_item *host = state->host; /* macro should be reconsidered? */
+#ifndef GNUTLS_AUTO_DHPARAMS
/* Create D-H parameters, or read them from the cache file. This function does
its own SMTP error messaging. This only happens for the server, TLS D-H ignores
client-side params. */
{
if (!dh_server_params)
if ((rc = init_server_dh(errstr)) != OK) return rc;
+
+ /* Unnecessary & discouraged with 3.6.0 or later */
gnutls_certificate_set_dh_params(state->x509_cred, dh_server_params);
}
+#endif
/* Link the credentials to the session. */
{
DEBUG(D_tls) debug_printf("GnuTLS global init required.\n");
-#ifdef HAVE_GNUTLS_PKCS11
+#if defined(HAVE_GNUTLS_PKCS11) && !defined(GNUTLS_AUTO_PKCS11_MANUAL)
/* By default, gnutls_global_init will init PKCS11 support in auto mode,
which loads modules from a config file, which sounds good and may be wanted
by some sysadmin, but also means in common configurations that GNOME keyring
return tls_error_gnu(US"gnutls_pkcs11_init", rc, host, errstr);
#endif
+#ifndef GNUTLS_AUTO_GLOBAL_INIT
if ((rc = gnutls_global_init()))
return tls_error_gnu(US"gnutls_global_init", rc, host, errstr);
+#endif
#if EXIM_GNUTLS_LIBRARY_LOG_LEVEL >= 0
DEBUG(D_tls)
#ifdef SUPPORT_GNUTLS_SESS_DESC
debug_printf("%s\n", gnutls_session_get_desc(state->session));
#endif
-#ifdef SUPPORT_GNUTLS_KEYLOG
+#ifdef SUPPORT_GNUTLS_KEYLOG
# ifdef EXIM_HAVE_TLS1_3
if (gnutls_protocol_get_version(state->session) < GNUTLS_TLS1_3)
-#else
+# else
if (TRUE)
-#endif
+# endif
{
gnutls_datum_t c, s;
gstring * gc, * gs;
- /* we only want the client random and the master secret */
+ /* For TLS1.2 we only want the client random and the master secret */
gnutls_session_get_random(state->session, &c, &s);
gnutls_session_get_master_secret(state->session, &s);
gc = ddump(&c);
" add SSLKEYLOGFILE to keep_environment in the exim config\n"
" run exim as root\n"
" if using sudo, add SSLKEYLOGFILE to env_keep in /etc/sudoers\n"
- " (works for TLS1.2 also, and saves cut-paste into file)\n");
+ " (works for TLS1.2 also, and saves cut-paste into file)"
+ " Trying to use add_environment for this will not work\n");
#endif
}
const char *errpos;
uschar * dummy_errstr;
-#define validate_check_rc(Label) do { \
+#ifdef GNUTLS_AUTO_GLOBAL_INIT
+# define validate_check_rc(Label) do { \
+ if (rc != GNUTLS_E_SUCCESS) { if (exim_gnutls_base_init_done) \
+ return string_sprintf("%s failed: %s", (Label), gnutls_strerror(rc)); } } while (0)
+# define return_deinit(Label) do { return (Label); } while (0)
+#else
+# define validate_check_rc(Label) do { \
if (rc != GNUTLS_E_SUCCESS) { if (exim_gnutls_base_init_done) gnutls_global_deinit(); \
- return string_sprintf("%s failed: %s", (Label), gnutls_strerror(rc)); } } while (0)
-#define return_deinit(Label) do { gnutls_global_deinit(); return (Label); } while (0)
+ return string_sprintf("%s failed: %s", (Label), gnutls_strerror(rc)); } } while (0)
+# define return_deinit(Label) do { gnutls_global_deinit(); return (Label); } while (0)
+#endif
if (exim_gnutls_base_init_done)
log_write(0, LOG_MAIN|LOG_PANIC,
"already initialised GnuTLS, Exim developer bug");
-#ifdef HAVE_GNUTLS_PKCS11
+#if defined(HAVE_GNUTLS_PKCS11) && !defined(GNUTLS_AUTO_PKCS11_MANUAL)
if (!gnutls_allow_auto_pkcs11)
{
rc = gnutls_pkcs11_init(GNUTLS_PKCS11_FLAG_MANUAL, NULL);
validate_check_rc(US"gnutls_pkcs11_init");
}
#endif
+#ifndef GNUTLS_AUTO_GLOBAL_INIT
rc = gnutls_global_init();
validate_check_rc(US"gnutls_global_init()");
+#endif
exim_gnutls_base_init_done = TRUE;
if (!(tls_require_ciphers && *tls_require_ciphers))
#undef return_deinit
#undef validate_check_rc
+#ifndef GNUTLS_AUTO_GLOBAL_INIT
gnutls_global_deinit();
+#endif
return NULL;
}
projects / user / henk / code / exim.git / blobdiff