[Development] Rename SSecurityTLSBase source/class to SSecurityTLS.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4108 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/SSecurityTLS.cxx b/common/rfb/SSecurityTLS.cxx
new file mode 100644
index 0000000..a268a51
--- /dev/null
+++ b/common/rfb/SSecurityTLS.cxx
@@ -0,0 +1,224 @@
+/*
+ * Copyright (C) 2004 Red Hat Inc.
+ * Copyright (C) 2005 Martin Koegler
+ * Copyright (C) 2010 TigerVNC Team
+ *
+ * This 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 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This software 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 this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#ifndef HAVE_GNUTLS
+#error "This source should not be compiled without HAVE_GNUTLS defined"
+#endif
+
+#include <rfb/SSecurityTLS.h>
+#include <rfb/SConnection.h>
+#include <rfb/LogWriter.h>
+#include <rfb/Exception.h>
+#include <rdr/TLSInStream.h>
+#include <rdr/TLSOutStream.h>
+
+#define DH_BITS 1024 /* XXX This should be configurable! */
+#define TLS_DEBUG
+
+using namespace rfb;
+
+StringParameter SSecurityTLS::X509_CertFile
+("x509cert", "specifies path to the x509 certificate in PEM format", "", ConfServer);
+
+StringParameter SSecurityTLS::X509_KeyFile
+("x509key", "specifies path to the key of the x509 certificate in PEM format", "", ConfServer);
+
+static LogWriter vlog("TLS");
+
+#ifdef TLS_DEBUG
+static void debug_log(int level, const char* str)
+{
+ vlog.debug(str);
+}
+#endif
+
+void SSecurityTLS::initGlobal()
+{
+ static bool globalInitDone = false;
+
+ if (!globalInitDone) {
+ if (gnutls_global_init() != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_global_init failed");
+
+#ifdef TLS_DEBUG
+ gnutls_global_set_log_level(10);
+ gnutls_global_set_log_function(debug_log);
+#endif
+
+ globalInitDone = true;
+ }
+}
+
+SSecurityTLS::SSecurityTLS(bool _anon) : session(0), dh_params(0),
+ anon_cred(0), cert_cred(0),
+ anon(_anon), fis(0), fos(0)
+{
+ certfile = X509_CertFile.getData();
+ keyfile = X509_KeyFile.getData();
+}
+
+void SSecurityTLS::shutdown()
+{
+ if (session) {
+ if (gnutls_bye(session, GNUTLS_SHUT_RDWR) != GNUTLS_E_SUCCESS) {
+ /* FIXME: Treat as non-fatal error */
+ vlog.error("TLS session wasn't terminated gracefully");
+ }
+ }
+
+ if (dh_params) {
+ gnutls_dh_params_deinit(dh_params);
+ dh_params = 0;
+ }
+
+ if (anon_cred) {
+ gnutls_anon_free_server_credentials(anon_cred);
+ anon_cred = 0;
+ }
+
+ if (cert_cred) {
+ gnutls_certificate_free_credentials(cert_cred);
+ cert_cred = 0;
+ }
+
+ if (session) {
+ gnutls_deinit(session);
+ session = 0;
+
+ gnutls_global_deinit();
+ }
+}
+
+
+SSecurityTLS::~SSecurityTLS()
+{
+ shutdown();
+
+ if (fis)
+ delete fis;
+ if (fos)
+ delete fos;
+
+ delete[] keyfile;
+ delete[] certfile;
+}
+
+bool SSecurityTLS::processMsg(SConnection *sc)
+{
+ rdr::InStream* is = sc->getInStream();
+ rdr::OutStream* os = sc->getOutStream();
+
+ vlog.debug("Process security message (session %p)", session);
+
+ if (!session) {
+ initGlobal();
+
+ if (gnutls_init(&session, GNUTLS_SERVER) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_init failed");
+
+ if (gnutls_set_default_priority(session) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_set_default_priority failed");
+
+ try {
+ setParams(session);
+ }
+ catch(...) {
+ os->writeU8(0);
+ throw;
+ }
+
+ gnutls_transport_set_pull_function(session,rdr::gnutls_InStream_pull);
+ gnutls_transport_set_push_function(session,rdr::gnutls_OutStream_push);
+ gnutls_transport_set_ptr2(session,
+ (gnutls_transport_ptr)is,
+ (gnutls_transport_ptr)os);
+ os->writeU8(1);
+ os->flush();
+ }
+
+ int err;
+ if ((err = gnutls_handshake(session)) != GNUTLS_E_SUCCESS) {
+ if (!gnutls_error_is_fatal(err)) {
+ vlog.debug("Deferring completion of TLS handshake: %s", gnutls_strerror(err));
+ return false;
+ }
+ vlog.error("TLS Handshake failed: %s", gnutls_strerror (err));
+ shutdown();
+ throw AuthFailureException("TLS Handshake failed");
+ }
+
+ vlog.debug("Handshake completed");
+
+ sc->setStreams(fis=new rdr::TLSInStream(is,session),
+ fos=new rdr::TLSOutStream(os,session));
+
+ return true;
+}
+
+void SSecurityTLS::setParams(gnutls_session session)
+{
+ static const int kx_anon_priority[] = { GNUTLS_KX_ANON_DH, 0 };
+ static const int kx_priority[] = { GNUTLS_KX_DHE_DSS, GNUTLS_KX_RSA,
+ GNUTLS_KX_DHE_RSA, GNUTLS_KX_SRP, 0 };
+
+ gnutls_kx_set_priority(session, anon ? kx_anon_priority : kx_priority);
+
+ if (gnutls_dh_params_init(&dh_params) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_dh_params_init failed");
+
+ if (gnutls_dh_params_generate2(dh_params, DH_BITS) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_dh_params_generate2 failed");
+
+ if (anon) {
+ if (gnutls_anon_allocate_server_credentials(&anon_cred) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_anon_allocate_server_credentials failed");
+
+ gnutls_anon_set_server_dh_params(anon_cred, dh_params);
+
+ if (gnutls_credentials_set(session, GNUTLS_CRD_ANON, anon_cred)
+ != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_credentials_set failed");
+
+ vlog.debug("Anonymous session has been set");
+
+ } else {
+ if (gnutls_certificate_allocate_credentials(&cert_cred) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_certificate_allocate_credentials failed");
+
+ gnutls_certificate_set_dh_params(cert_cred, dh_params);
+
+ if (gnutls_certificate_set_x509_key_file(cert_cred, certfile, keyfile,
+ GNUTLS_X509_FMT_PEM) != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("load of key failed");
+
+ if (gnutls_credentials_set(session, GNUTLS_CRD_CERTIFICATE, cert_cred)
+ != GNUTLS_E_SUCCESS)
+ throw AuthFailureException("gnutls_credentials_set failed");
+
+ vlog.debug("X509 session has been set");
+
+ }
+
+}