Split up gssapi mechanism into client and server.

src/gssapi_client.hpp

@@ -0,0 +1,72 @@
+/*
+    Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
+
+    This file is part of 0MQ.
+
+    0MQ is free software; you can redistribute it and/or modify it under
+    the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    0MQ 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 Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __ZMQ_GSSAPI_CLIENT_HPP_INCLUDED__
+#define __ZMQ_GSSAPI_CLIENT_HPP_INCLUDED__
+
+#include "mechanism.hpp"
+#include "options.hpp"
+
+namespace zmq
+{
+
+    class msg_t;
+    class session_base_t;
+
+    class gssapi_client_t : public mechanism_t
+    {
+    public:
+
+        gssapi_client_t (const options_t &options_);
+        virtual ~gssapi_client_t ();
+
+        // mechanism implementation
+        virtual int next_handshake_command (msg_t *msg_);
+        virtual int process_handshake_command (msg_t *msg_);
+        virtual bool is_handshake_complete () const;
+
+    private:
+
+        enum state_t {
+            sending_hello,
+            waiting_for_welcome,
+            sending_initiate,
+            sending_token,
+            waiting_for_token,
+            waiting_for_ready,
+            ready
+        };
+
+        //  True iff we are awaiting another GSS token.
+        bool expecting_another_token;
+
+        state_t state;
+
+        int produce_hello (msg_t *msg_) const;
+        int produce_initiate (msg_t *msg_) const;
+        int produce_token (msg_t *msg_) const;
+
+        int process_welcome (msg_t *msg);
+        int process_token (msg_t *msg_);
+        int process_ready (msg_t *msg_);
+    };
+
+}
+
+#endif