Initial revision
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@2 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/rfb/SSecurityVncAuth.cxx b/rfb/SSecurityVncAuth.cxx
new file mode 100644
index 0000000..532d1a6
--- /dev/null
+++ b/rfb/SSecurityVncAuth.cxx
@@ -0,0 +1,83 @@
+/* Copyright (C) 2002-2003 RealVNC Ltd. All Rights Reserved.
+ *
+ * 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.
+ */
+//
+// SSecurityVncAuth
+//
+
+#include <rfb/SSecurityVncAuth.h>
+#include <rdr/RandomStream.h>
+#include <rfb/SConnection.h>
+#include <rfb/vncAuth.h>
+#include <rfb/Configuration.h>
+#include <rfb/LogWriter.h>
+#include <rfb/util.h>
+#include <string.h>
+#include <stdio.h>
+
+using namespace rfb;
+
+static LogWriter vlog("VncAuth");
+
+
+SSecurityVncAuth::SSecurityVncAuth(VncAuthPasswdGetter* pg_)
+ : sentChallenge(false), responsePos(0), pg(pg_)
+{
+}
+
+bool SSecurityVncAuth::processMsg(SConnection* sc, bool* done)
+{
+ *done = false;
+ rdr::InStream* is = sc->getInStream();
+ rdr::OutStream* os = sc->getOutStream();
+
+ if (!sentChallenge) {
+ rdr::RandomStream rs;
+ rs.readBytes(challenge, vncAuthChallengeSize);
+ os->writeBytes(challenge, vncAuthChallengeSize);
+ os->flush();
+ sentChallenge = true;
+ return true;
+ }
+
+ if (responsePos >= vncAuthChallengeSize) return false;
+ while (is->checkNoWait(1) && responsePos < vncAuthChallengeSize) {
+ response[responsePos++] = is->readU8();
+ }
+
+ if (responsePos < vncAuthChallengeSize) return true;
+
+ CharArray passwd(pg->getVncAuthPasswd());
+
+ // Beyond this point, there is no more VNCAuth protocol to perform.
+ *done = true;
+
+ if (!passwd.buf) {
+ failureMessage_.buf = strDup("No password configured for VNC Auth");
+ vlog.error(failureMessage_.buf);
+ return false;
+ }
+
+ vncAuthEncryptChallenge(challenge, passwd.buf);
+ memset(passwd.buf, 0, strlen(passwd.buf));
+
+ if (memcmp(challenge, response, vncAuthChallengeSize) != 0) {
+ return false;
+ }
+
+ return true;
+}