libcoap 4.3.0
coap_notls.c
Go to the documentation of this file.
1/*
2* coap_notls.c -- Stub Datagram Transport Layer Support for libcoap
3*
4* Copyright (C) 2016 Olaf Bergmann <bergmann@tzi.org>
5*
6 * SPDX-License-Identifier: BSD-2-Clause
7 *
8* This file is part of the CoAP library libcoap. Please see README for terms
9* of use.
10*/
11
12#include "coap3/coap_internal.h"
13
14#if !defined(HAVE_LIBTINYDTLS) && !defined(HAVE_OPENSSL) && !defined(HAVE_LIBGNUTLS) && !defined(HAVE_MBEDTLS)
15
16int
18 return 0;
19}
20
21int
23 return 0;
24}
25
28 static coap_tls_version_t version;
29 version.version = 0;
31 return &version;
32}
33
34int
36 const coap_dtls_pki_t* setup_data COAP_UNUSED,
38) {
39 return 0;
40}
41
42int
44 const char *ca_file COAP_UNUSED,
45 const char *ca_path COAP_UNUSED
46) {
47 return 0;
48}
49
50int
53) {
54 return 0;
55}
56
57int
60) {
61 return 0;
62}
63
64int
66{
67 return 0;
68}
69
70static int dtls_log_level = 0;
71
73}
74
75void *
77 coap_tls_library_t *tls_lib) {
78 if (tls_lib)
79 *tls_lib = COAP_TLS_LIBRARY_NOTLS;
80 return NULL;
81}
82
84}
85
86void
88 dtls_log_level = level;
89}
90
91int
93 return dtls_log_level;
94}
95
96void *
98 return NULL;
99}
100
101void
103}
104
106 return NULL;
107}
108
110 return NULL;
111}
112
114}
115
117}
118
119int
121 const uint8_t *data COAP_UNUSED,
122 size_t data_len COAP_UNUSED
123) {
124 return -1;
125}
126
128 return 1;
129}
130
132 return 0;
133}
134
137 return 0;
138}
139
141}
142
143int
145 const uint8_t *data COAP_UNUSED,
146 size_t data_len COAP_UNUSED
147) {
148 return -1;
149}
150
151int
153 const uint8_t *data COAP_UNUSED,
154 size_t data_len COAP_UNUSED
155) {
156 return 0;
157}
158
160 return 0;
161}
162
164 return NULL;
165}
166
168 return NULL;
169}
170
172}
173
175 const uint8_t *data COAP_UNUSED,
176 size_t data_len COAP_UNUSED
177) {
178 return -1;
179}
180
182 uint8_t *data COAP_UNUSED,
183 size_t data_len COAP_UNUSED
184) {
185 return -1;
186}
187
188typedef struct coap_local_hash_t {
189 size_t ofs;
190 coap_key_t key[8]; /* 32 bytes in total */
192
195 coap_key_t *digest_ctx = coap_malloc(sizeof(coap_local_hash_t));
196
197 if (digest_ctx) {
198 memset(digest_ctx, 0, sizeof(coap_local_hash_t));
199 }
200
201 return digest_ctx;
202}
203
204void
206 coap_free(digest_ctx);
207}
208
209int
211 const uint8_t *data,
212 size_t data_len) {
213 coap_local_hash_t *local = (coap_local_hash_t*)digest_ctx;
214
215 coap_hash(data, data_len, local->key[local->ofs]);
216
217 local->ofs = (local->ofs + 1) % 7;
218 return 1;
219}
220
221int
223 coap_digest_t *digest_buffer) {
224 coap_local_hash_t *local = (coap_local_hash_t*)digest_ctx;
225
226 memcpy(digest_buffer, local->key, sizeof(coap_digest_t));
227
228 coap_digest_free(digest_ctx);
229 return 1;
230}
231
232#else /* !HAVE_LIBTINYDTLS && !HAVE_OPENSSL && !HAVE_LIBGNUTLS */
233
234#ifdef __clang__
235/* Make compilers happy that do not like empty modules. As this function is
236 * never used, we ignore -Wunused-function at the end of compiling this file
237 */
238#pragma GCC diagnostic ignored "-Wunused-function"
239#endif
240static inline void dummy(void) {
241}
242
243#endif /* !HAVE_LIBTINYDTLS && !HAVE_OPENSSL && !HAVE_LIBGNUTLS && !HAVE_MBEDTLS */
unsigned char coap_key_t[4]
Definition: coap_hashkey.h:24
#define coap_hash(String, Length, Result)
Definition: coap_hashkey.h:38
Pulls together all the internal only header files.
int coap_dtls_context_set_spsk(coap_context_t *ctx COAP_UNUSED, coap_dtls_spsk_t *setup_data COAP_UNUSED)
Definition: coap_notls.c:58
void coap_dtls_handle_timeout(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:140
int coap_dtls_context_set_pki(coap_context_t *ctx COAP_UNUSED, const coap_dtls_pki_t *setup_data COAP_UNUSED, const coap_dtls_role_t role COAP_UNUSED)
Definition: coap_notls.c:35
void * coap_tls_new_client_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED)
Definition: coap_notls.c:163
coap_tick_t coap_dtls_get_timeout(coap_session_t *session COAP_UNUSED, coap_tick_t now COAP_UNUSED)
Definition: coap_notls.c:136
int coap_dtls_send(coap_session_t *session COAP_UNUSED, const uint8_t *data COAP_UNUSED, size_t data_len COAP_UNUSED)
Definition: coap_notls.c:120
ssize_t coap_tls_read(coap_session_t *session COAP_UNUSED, uint8_t *data COAP_UNUSED, size_t data_len COAP_UNUSED)
Definition: coap_notls.c:181
coap_tick_t coap_dtls_get_context_timeout(void *dtls_context COAP_UNUSED)
Definition: coap_notls.c:131
int coap_dtls_receive(coap_session_t *session COAP_UNUSED, const uint8_t *data COAP_UNUSED, size_t data_len COAP_UNUSED)
Definition: coap_notls.c:144
void * coap_dtls_get_tls(const coap_session_t *c_session COAP_UNUSED, coap_tls_library_t *tls_lib)
Definition: coap_notls.c:76
unsigned int coap_dtls_get_overhead(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:159
int coap_dtls_hello(coap_session_t *session COAP_UNUSED, const uint8_t *data COAP_UNUSED, size_t data_len COAP_UNUSED)
Definition: coap_notls.c:152
int coap_dtls_context_check_keys_enabled(coap_context_t *ctx COAP_UNUSED)
Definition: coap_notls.c:65
static int dtls_log_level
Definition: coap_notls.c:70
void * coap_dtls_new_client_session(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:109
struct coap_local_hash_t coap_local_hash_t
int coap_dtls_context_set_cpsk(coap_context_t *ctx COAP_UNUSED, coap_dtls_cpsk_t *setup_data COAP_UNUSED)
Definition: coap_notls.c:51
ssize_t coap_tls_write(coap_session_t *session COAP_UNUSED, const uint8_t *data COAP_UNUSED, size_t data_len COAP_UNUSED)
Definition: coap_notls.c:174
void coap_dtls_session_update_mtu(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:116
int coap_dtls_context_set_pki_root_cas(coap_context_t *ctx COAP_UNUSED, const char *ca_file COAP_UNUSED, const char *ca_path COAP_UNUSED)
Definition: coap_notls.c:43
void coap_dtls_free_context(void *handle COAP_UNUSED)
Definition: coap_notls.c:102
void coap_dtls_free_session(coap_session_t *coap_session COAP_UNUSED)
Definition: coap_notls.c:113
void * coap_dtls_new_context(coap_context_t *coap_context COAP_UNUSED)
Definition: coap_notls.c:97
void * coap_dtls_new_server_session(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:105
void * coap_tls_new_server_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED)
Definition: coap_notls.c:167
void coap_tls_free_session(coap_session_t *coap_session COAP_UNUSED)
Definition: coap_notls.c:171
COAP_STATIC_INLINE void dummy(void)
Definition: coap_time.c:131
void coap_digest_free(coap_digest_ctx_t *digest_ctx)
Free off coap_digest_ctx_t.
Definition: coap_notls.c:205
int coap_digest_final(coap_digest_ctx_t *digest_ctx, coap_digest_t *digest_buffer)
Finalize the coap_digest information into the provided digest_buffer.
Definition: coap_notls.c:222
int coap_digest_update(coap_digest_ctx_t *digest_ctx, const uint8_t *data, size_t data_len)
Update the coap_digest information with the next chunk of data.
Definition: coap_notls.c:210
void coap_digest_ctx_t
coap_digest_ctx_t * coap_digest_setup(void)
Initialize a coap_digest.
Definition: coap_notls.c:194
uint64_t coap_tick_t
This data type represents internal timer ticks with COAP_TICKS_PER_SECOND resolution.
Definition: coap_time.h:122
void coap_dtls_startup(void)
Initialize the underlying (D)TLS Library layer.
Definition: coap_notls.c:72
int coap_dtls_is_context_timeout(void)
Check if timeout is handled per CoAP session or per CoAP context.
Definition: coap_notls.c:127
void coap_dtls_shutdown(void)
Close down the underlying (D)TLS Library layer.
Definition: coap_notls.c:83
coap_tls_version_t * coap_get_tls_library_version(void)
Determine the type and version of the underlying (D)TLS library.
Definition: coap_notls.c:27
coap_dtls_role_t
Definition: coap_dtls.h:31
int coap_tls_is_supported(void)
Check whether TLS is available.
Definition: coap_notls.c:22
int coap_dtls_is_supported(void)
Check whether DTLS is available.
Definition: coap_notls.c:17
coap_tls_library_t
Definition: coap_dtls.h:52
@ COAP_TLS_LIBRARY_NOTLS
No DTLS library.
Definition: coap_dtls.h:53
void coap_dtls_set_log_level(int level)
Sets the (D)TLS logging level to the specified level.
Definition: coap_notls.c:87
int coap_dtls_get_log_level(void)
Get the current (D)TLS logging.
Definition: coap_notls.c:92
#define COAP_UNUSED
Definition: libcoap.h:55
COAP_STATIC_INLINE void coap_free(void *object)
Wrapper function to coap_free_type() for backwards compatibility.
Definition: mem.h:105
COAP_STATIC_INLINE void * coap_malloc(size_t size)
Wrapper function to coap_malloc_type() for backwards compatibility.
Definition: mem.h:98
The CoAP stack's global state is stored in a coap_context_t object.
The structure used for defining the Client PSK setup data to be used.
Definition: coap_dtls.h:338
The structure used for defining the PKI setup data to be used.
Definition: coap_dtls.h:244
The structure used for defining the Server PSK setup data to be used.
Definition: coap_dtls.h:425
coap_key_t key[8]
Definition: coap_notls.c:190
Abstraction of virtual session that can be attached to coap_context_t (client) or coap_endpoint_t (se...
The structure used for returning the underlying (D)TLS library information.
Definition: coap_dtls.h:64
coap_tls_library_t type
Library type.
Definition: coap_dtls.h:66
uint64_t version
(D)TLS runtime Library Version
Definition: coap_dtls.h:65