[Development] Implement VeNCrypt type support on client side. Currently only
TLSNone and TLSVnc VeNCrypt subtypes are implemented.
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4046 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/common/rfb/CSecurityTLSBase.cxx b/common/rfb/CSecurityTLSBase.cxx
new file mode 100644
index 0000000..0755f36
--- /dev/null
+++ b/common/rfb/CSecurityTLSBase.cxx
@@ -0,0 +1,139 @@
+/*
+ * 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
+
+#ifdef HAVE_GNUTLS
+
+#include <rfb/CSecurityTLSBase.h>
+#include <rfb/CConnection.h>
+#include <rfb/LogWriter.h>
+#include <rfb/Exception.h>
+#include <rdr/TLSInStream.h>
+#include <rdr/TLSOutStream.h>
+
+#define TLS_DEBUG
+
+using namespace rfb;
+
+static LogWriter vlog("TLS");
+
+#ifdef TLS_DEBUG
+static void debug_log(int level, const char* str)
+{
+ vlog.debug(str);
+}
+#endif
+
+void CSecurityTLSBase::initGlobal()
+{
+ static bool globalInitDone = false;
+
+ if (!globalInitDone) {
+ gnutls_global_init();
+
+#ifdef TLS_DEBUG
+ gnutls_global_set_log_level(10);
+ gnutls_global_set_log_function(debug_log);
+#endif
+
+ globalInitDone = true;
+ }
+}
+
+CSecurityTLSBase::CSecurityTLSBase() : session(0)
+{
+ fis = 0;
+ fos = 0;
+}
+
+void CSecurityTLSBase::shutdown()
+{
+ if(session)
+ ;//gnutls_bye(session, GNUTLS_SHUT_RDWR);
+}
+
+
+CSecurityTLSBase::~CSecurityTLSBase()
+{
+ if (session) {
+ //gnutls_bye(session, GNUTLS_SHUT_RDWR);
+ gnutls_deinit (session);
+ session = 0;
+ }
+ if (fis)
+ delete fis;
+ if (fos)
+ delete fos;
+ /* FIXME: should be doing gnutls_global_deinit() at some point */
+}
+
+bool CSecurityTLSBase::processMsg(CConnection* cc)
+{
+ rdr::InStream* is = cc->getInStream();
+ rdr::OutStream* os = cc->getOutStream();
+ client = cc;
+
+ initGlobal();
+
+ if (!session) {
+ if (!is->checkNoWait(1))
+ return false;
+
+ if (is->readU8() == 0)
+ return true;
+
+ gnutls_init(&session, GNUTLS_CLIENT);
+ gnutls_set_default_priority(session);
+
+ setParam(session);
+
+ 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);
+ }
+
+ int err;
+ err = gnutls_handshake(session);
+ if (err != GNUTLS_E_SUCCESS && !gnutls_error_is_fatal(err))
+ return false;
+
+ if (err != GNUTLS_E_SUCCESS) {
+ vlog.error("TLS Handshake failed: %s\n", gnutls_strerror (err));
+ gnutls_bye(session, GNUTLS_SHUT_RDWR);
+ freeResources();
+ gnutls_deinit(session);
+ session = 0;
+ throw AuthFailureException("TLS Handshake failed");
+ }
+ checkSession(session);
+
+ cc->setStreams(fis = new rdr::TLSInStream(is, session),
+ fos = new rdr::TLSOutStream(os, session));
+
+ return true;
+}
+
+#endif /* HAVE_GNUTLS */