1 /*
2     Copyright (c) 2007-2017 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 __TESTUTIL_SECURITY_HPP_INCLUDED__
31 #define __TESTUTIL_SECURITY_HPP_INCLUDED__
32 
33 #include "testutil_unity.hpp"
34 #include "testutil_monitoring.hpp"
35 
36 //  security test utils
37 
38 typedef void(socket_config_fn) (void *, void *);
39 
40 //  NULL specific functions
41 void socket_config_null_client (void *server_, void *server_secret_);
42 
43 void socket_config_null_server (void *server_, void *server_secret_);
44 
45 //  PLAIN specific functions
46 void socket_config_plain_client (void *server_, void *server_secret_);
47 
48 void socket_config_plain_server (void *server_, void *server_secret_);
49 
50 //  CURVE specific functions
51 
52 //  We'll generate random test keys at startup
53 extern char valid_client_public[41];
54 extern char valid_client_secret[41];
55 extern char valid_server_public[41];
56 extern char valid_server_secret[41];
57 
58 void setup_testutil_security_curve ();
59 
60 void socket_config_curve_server (void *server_, void *server_secret_);
61 
62 struct curve_client_data_t
63 {
64     const char *server_public;
65     const char *client_public;
66     const char *client_secret;
67 };
68 
69 void socket_config_curve_client (void *client_, void *data_);
70 
71 //  --------------------------------------------------------------------------
72 //  This methods receives and validates ZAP requests (allowing or denying
73 //  each client connection).
74 
75 enum zap_protocol_t
76 {
77     zap_ok,
78     // ZAP-compliant non-standard cases
79     zap_status_temporary_failure,
80     zap_status_internal_error,
81     // ZAP protocol errors
82     zap_wrong_version,
83     zap_wrong_request_id,
84     zap_status_invalid,
85     zap_too_many_parts,
86     zap_disconnect,
87     zap_do_not_recv,
88     zap_do_not_send
89 };
90 
91 extern void *zap_requests_handled;
92 
93 void zap_handler_generic (zap_protocol_t zap_protocol_,
94                           const char *expected_routing_id_ = "IDENT");
95 
96 void zap_handler (void * /*unused_*/);
97 
98 //  Security-specific monitor event utilities
99 
100 // assert_* are macros rather than functions, to allow assertion failures be
101 // attributed to the causing source code line
102 #define assert_no_more_monitor_events_with_timeout(monitor, timeout)                  \
103     {                                                                                 \
104         int event_count = 0;                                                          \
105         int event, err;                                                               \
106         while ((event = get_monitor_event_with_timeout ((monitor), &err, NULL,        \
107                                                         (timeout)))                   \
108                != -1) {                                                               \
109             if (event == ZMQ_EVENT_HANDSHAKE_FAILED_NO_DETAIL                         \
110                 && (err == EPIPE || err == ECONNRESET                                 \
111                     || err == ECONNABORTED)) {                                        \
112                 fprintf (stderr,                                                      \
113                          "Ignored event (skipping any further events): %x "           \
114                          "(err = %i == %s)\n",                                        \
115                          event, err, zmq_strerror (err));                             \
116                 continue;                                                             \
117             }                                                                         \
118             ++event_count;                                                            \
119             /* TODO write this into a buffer and attach to the assertion msg below */ \
120             print_unexpected_event_stderr (event, err, 0, 0);                         \
121         }                                                                             \
122         TEST_ASSERT_EQUAL_INT (0, event_count);                                       \
123     }
124 
125 void setup_context_and_server_side (
126   void **zap_control_,
127   void **zap_thread_,
128   void **server_,
129   void **server_mon_,
130   char *my_endpoint_,
131   zmq_thread_fn zap_handler_ = &zap_handler,
132   socket_config_fn socket_config_ = &socket_config_curve_server,
133   void *socket_config_data_ = valid_server_secret,
134   const char *routing_id_ = "IDENT");
135 
136 void shutdown_context_and_server_side (void *zap_thread_,
137                                        void *server_,
138                                        void *server_mon_,
139                                        void *zap_control_,
140                                        bool zap_handler_stopped_ = false);
141 
142 void *create_and_connect_client (char *my_endpoint_,
143                                  socket_config_fn socket_config_,
144                                  void *socket_config_data_,
145                                  void **client_mon_ = NULL);
146 
147 void expect_new_client_bounce_fail (char *my_endpoint_,
148                                     void *server_,
149                                     socket_config_fn socket_config_,
150                                     void *socket_config_data_,
151                                     void **client_mon_ = NULL,
152                                     int expected_client_event_ = 0,
153                                     int expected_client_value_ = 0);
154 
155 #endif
156