1/*
2 Copyright (c) 2007-2016 Contributors as noted in the AUTHORS file
3
4 This file is part of libzmq, the ZeroMQ core engine in C++.
5
6 libzmq is free software; you can redistribute it and/or modify it under
7 the terms of the GNU Lesser General Public License (LGPL) as published
8 by the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 As a special exception, the Contributors give you permission to link
12 this library with independent modules to produce an executable,
13 regardless of the license terms of these independent modules, and to
14 copy and distribute the resulting executable under terms of your choice,
15 provided that you also meet, for each linked independent module, the
16 terms and conditions of the license of that module. An independent
17 module is a module which is not derived from or based on this library.
18 If you modify this library, you must extend this exception to your
19 version of the library.
20
21 libzmq is distributed in the hope that it will be useful, but WITHOUT
22 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
23 FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
24 License for more details.
25
26 You should have received a copy of the GNU Lesser General Public License
27 along with this program. If not, see <http://www.gnu.org/licenses/>.
28*/
29
30#ifndef __ZMQ_GSSAPI_SERVER_HPP_INCLUDED__
31#define __ZMQ_GSSAPI_SERVER_HPP_INCLUDED__
32
33#ifdef HAVE_LIBGSSAPI_KRB5
34
35#include "gssapi_mechanism_base.hpp"
36#include "zap_client.hpp"
37
38namespace zmq
39{
40class msg_t;
41class session_base_t;
42
43class gssapi_server_t : public gssapi_mechanism_base_t, public zap_client_t
44{
45 public:
46 gssapi_server_t (session_base_t *session_,
47 const std::string &peer_address,
48 const options_t &options_);
49 virtual ~gssapi_server_t ();
50
51 // mechanism implementation
52 virtual int next_handshake_command (msg_t *msg_);
53 virtual int process_handshake_command (msg_t *msg_);
54 virtual int encode (msg_t *msg_);
55 virtual int decode (msg_t *msg_);
56 virtual int zap_msg_available ();
57 virtual status_t status () const;
58
59 private:
60 enum state_t
61 {
62 send_next_token,
63 recv_next_token,
64 expect_zap_reply,
65 send_ready,
66 recv_ready,
67 connected
68 };
69
70 session_base_t *const session;
71
72 const std::string peer_address;
73
74 // Current FSM state
75 state_t state;
76
77 // True iff server considers the client authenticated
78 bool security_context_established;
79
80 // The underlying mechanism type (ignored)
81 gss_OID doid;
82
83 void accept_context ();
84 int produce_next_token (msg_t *msg_);
85 int process_next_token (msg_t *msg_);
86 void send_zap_request ();
87};
88}
89
90#endif
91
92#endif
93