1 files changed, 139 insertions, 0 deletions
diff --git a/common/rfb/CSecurityTLSBase.cxx b/common/rfb/CSecurityTLSBase.cxx
new file mode 100644
index 00000000..0755f368
--- /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 */