coap_notls.c
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/*
* coap_notls.c -- Stub Datagram Transport Layer Support for libcoap
*
* Copyright (C) 2016 Olaf Bergmann <bergmann@tzi.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*
* This file is part of the CoAP library libcoap. Please see README for terms
* of use.
*/
#include "coap3/coap_internal.h"
#if !defined(HAVE_LIBTINYDTLS) && !defined(HAVE_OPENSSL) && !defined(HAVE_LIBGNUTLS) && !defined(HAVE_MBEDTLS)
int
coap_dtls_is_supported(void) {
return 0;
}
int
coap_tls_is_supported(void) {
return 0;
}
coap_tls_version_t *
coap_get_tls_library_version(void) {
static coap_tls_version_t version;
version.version = 0;
version.type = COAP_TLS_LIBRARY_NOTLS;
return &version;
}
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
) {
return 0;
}
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
) {
return 0;
}
int
coap_dtls_context_set_cpsk(coap_context_t *ctx COAP_UNUSED,
coap_dtls_cpsk_t* setup_data COAP_UNUSED
) {
return 0;
}
int
coap_dtls_context_set_spsk(coap_context_t *ctx COAP_UNUSED,
coap_dtls_spsk_t* setup_data COAP_UNUSED
) {
return 0;
}
int
coap_dtls_context_check_keys_enabled(coap_context_t *ctx COAP_UNUSED)
{
return 0;
}
static int dtls_log_level = 0;
void coap_dtls_startup(void) {
}
void *
coap_dtls_get_tls(const coap_session_t *c_session COAP_UNUSED,
coap_tls_library_t *tls_lib) {
if (tls_lib)
*tls_lib = COAP_TLS_LIBRARY_NOTLS;
return NULL;
}
void coap_dtls_shutdown(void) {
}
void
coap_dtls_set_log_level(int level) {
dtls_log_level = level;
}
int
coap_dtls_get_log_level(void) {
return dtls_log_level;
}
void *
coap_dtls_new_context(coap_context_t *coap_context COAP_UNUSED) {
return NULL;
}
void
coap_dtls_free_context(void *handle COAP_UNUSED) {
}
void *coap_dtls_new_server_session(coap_session_t *session COAP_UNUSED) {
return NULL;
}
void *coap_dtls_new_client_session(coap_session_t *session COAP_UNUSED) {
return NULL;
}
void coap_dtls_free_session(coap_session_t *coap_session COAP_UNUSED) {
}
void coap_dtls_session_update_mtu(coap_session_t *session COAP_UNUSED) {
}
int
coap_dtls_send(coap_session_t *session COAP_UNUSED,
const uint8_t *data COAP_UNUSED,
size_t data_len COAP_UNUSED
) {
return -1;
}
int coap_dtls_is_context_timeout(void) {
return 1;
}
coap_tick_t coap_dtls_get_context_timeout(void *dtls_context COAP_UNUSED) {
return 0;
}
coap_tick_t
coap_dtls_get_timeout(coap_session_t *session COAP_UNUSED, coap_tick_t now COAP_UNUSED) {
return 0;
}
void coap_dtls_handle_timeout(coap_session_t *session COAP_UNUSED) {
}
int
coap_dtls_receive(coap_session_t *session COAP_UNUSED,
const uint8_t *data COAP_UNUSED,
size_t data_len COAP_UNUSED
) {
return -1;
}
int
coap_dtls_hello(coap_session_t *session COAP_UNUSED,
const uint8_t *data COAP_UNUSED,
size_t data_len COAP_UNUSED
) {
return 0;
}
unsigned int coap_dtls_get_overhead(coap_session_t *session COAP_UNUSED) {
return 0;
}
void *coap_tls_new_client_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED) {
return NULL;
}
void *coap_tls_new_server_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED) {
return NULL;
}
void coap_tls_free_session(coap_session_t *coap_session COAP_UNUSED) {
}
ssize_t coap_tls_write(coap_session_t *session COAP_UNUSED,
const uint8_t *data COAP_UNUSED,
size_t data_len COAP_UNUSED
) {
return -1;
}
ssize_t coap_tls_read(coap_session_t *session COAP_UNUSED,
uint8_t *data COAP_UNUSED,
size_t data_len COAP_UNUSED
) {
return -1;
}
typedef struct coap_local_hash_t {
size_t ofs;
coap_key_t key[8]; /* 32 bytes in total */
} coap_local_hash_t;
coap_digest_ctx_t *
coap_digest_setup(void) {
coap_key_t *digest_ctx = coap_malloc(sizeof(coap_local_hash_t));
if (digest_ctx) {
memset(digest_ctx, 0, sizeof(coap_local_hash_t));
}
return digest_ctx;
}
void
coap_digest_free(coap_digest_ctx_t *digest_ctx) {
coap_free(digest_ctx);
}
int
coap_digest_update(coap_digest_ctx_t *digest_ctx,
const uint8_t *data,
size_t data_len) {
coap_local_hash_t *local = (coap_local_hash_t*)digest_ctx;
coap_hash(data, data_len, local->key[local->ofs]);
local->ofs = (local->ofs + 1) % 7;
return 1;
}
int
coap_digest_final(coap_digest_ctx_t *digest_ctx,
coap_digest_t *digest_buffer) {
coap_local_hash_t *local = (coap_local_hash_t*)digest_ctx;
memcpy(digest_buffer, local->key, sizeof(coap_digest_t));
coap_digest_free(digest_ctx);
return 1;
}
#else /* !HAVE_LIBTINYDTLS && !HAVE_OPENSSL && !HAVE_LIBGNUTLS */
#ifdef __clang__
/* Make compilers happy that do not like empty modules. As this function is
* never used, we ignore -Wunused-function at the end of compiling this file
*/
#pragma GCC diagnostic ignored "-Wunused-function"
#endif
static inline void dummy(void) {
}
#endif /* !HAVE_LIBTINYDTLS && !HAVE_OPENSSL && !HAVE_LIBGNUTLS && !HAVE_MBEDTLS */
coap_key_t
unsigned char coap_key_t[4]
Definition: coap_hashkey.h:24
coap_hash
#define coap_hash(String, Length, Result)
Definition: coap_hashkey.h:38
coap_internal.h
Pulls together all the internal only header files.
coap_dtls_new_server_session
void * coap_dtls_new_server_session(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:105
coap_dtls_context_set_spsk
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
coap_dtls_handle_timeout
void coap_dtls_handle_timeout(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:140
coap_dtls_context_set_pki
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
coap_dtls_get_timeout
coap_tick_t coap_dtls_get_timeout(coap_session_t *session COAP_UNUSED, coap_tick_t now COAP_UNUSED)
Definition: coap_notls.c:136
coap_dtls_new_context
void * coap_dtls_new_context(coap_context_t *coap_context COAP_UNUSED)
Definition: coap_notls.c:97
coap_dtls_send
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
coap_dtls_new_client_session
void * coap_dtls_new_client_session(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:109
coap_tls_read
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_dtls_get_context_timeout
coap_tick_t coap_dtls_get_context_timeout(void *dtls_context COAP_UNUSED)
Definition: coap_notls.c:131
coap_dtls_receive
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
coap_dtls_get_overhead
unsigned int coap_dtls_get_overhead(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:159
coap_tls_new_client_session
void * coap_tls_new_client_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED)
Definition: coap_notls.c:163
coap_tls_new_server_session
void * coap_tls_new_server_session(coap_session_t *session COAP_UNUSED, int *connected COAP_UNUSED)
Definition: coap_notls.c:167
coap_dtls_hello
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
coap_dtls_context_check_keys_enabled
int coap_dtls_context_check_keys_enabled(coap_context_t *ctx COAP_UNUSED)
Definition: coap_notls.c:65
dtls_log_level
static int dtls_log_level
Definition: coap_notls.c:70
coap_local_hash_t
struct coap_local_hash_t coap_local_hash_t
coap_dtls_context_set_cpsk
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
coap_tls_write
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
coap_dtls_session_update_mtu
void coap_dtls_session_update_mtu(coap_session_t *session COAP_UNUSED)
Definition: coap_notls.c:116
coap_dtls_context_set_pki_root_cas
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
coap_dtls_free_context
void coap_dtls_free_context(void *handle COAP_UNUSED)
Definition: coap_notls.c:102
coap_dtls_free_session
void coap_dtls_free_session(coap_session_t *coap_session COAP_UNUSED)
Definition: coap_notls.c:113
coap_dtls_get_tls
void * coap_dtls_get_tls(const coap_session_t *c_session COAP_UNUSED, coap_tls_library_t *tls_lib)
Definition: coap_notls.c:76
coap_tls_free_session
void coap_tls_free_session(coap_session_t *coap_session COAP_UNUSED)
Definition: coap_notls.c:171
dummy
COAP_STATIC_INLINE void dummy(void)
Definition: coap_time.c:131
coap_digest_free
void coap_digest_free(coap_digest_ctx_t *digest_ctx)
Free off coap_digest_ctx_t.
Definition: coap_notls.c:205
coap_digest_setup
coap_digest_ctx_t * coap_digest_setup(void)
Initialize a coap_digest.
Definition: coap_notls.c:194
coap_digest_final
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
coap_digest_update
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
coap_digest_ctx_t
void coap_digest_ctx_t
Definition: coap_cache_internal.h:58
coap_tick_t
uint64_t coap_tick_t
This data type represents internal timer ticks with COAP_TICKS_PER_SECOND resolution.
Definition: coap_time.h:122
coap_dtls_startup
void coap_dtls_startup(void)
Initialize the underlying (D)TLS Library layer.
Definition: coap_notls.c:72
coap_dtls_is_context_timeout
int coap_dtls_is_context_timeout(void)
Check if timeout is handled per CoAP session or per CoAP context.
Definition: coap_notls.c:127
coap_dtls_shutdown
void coap_dtls_shutdown(void)
Close down the underlying (D)TLS Library layer.
Definition: coap_notls.c:83
coap_dtls_role_t
coap_dtls_role_t
Definition: coap_dtls.h:31
coap_tls_is_supported
int coap_tls_is_supported(void)
Check whether TLS is available.
Definition: coap_notls.c:22
coap_get_tls_library_version
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_is_supported
int coap_dtls_is_supported(void)
Check whether DTLS is available.
Definition: coap_notls.c:17
coap_tls_library_t
coap_tls_library_t
Definition: coap_dtls.h:52
COAP_TLS_LIBRARY_NOTLS
@ COAP_TLS_LIBRARY_NOTLS
No DTLS library.
Definition: coap_dtls.h:53
coap_dtls_set_log_level
void coap_dtls_set_log_level(int level)
Sets the (D)TLS logging level to the specified level.
Definition: coap_notls.c:87
coap_dtls_get_log_level
int coap_dtls_get_log_level(void)
Get the current (D)TLS logging.
Definition: coap_notls.c:92
COAP_UNUSED
#define COAP_UNUSED
Definition: libcoap.h:55
coap_malloc
COAP_STATIC_INLINE void * coap_malloc(size_t size)
Wrapper function to coap_malloc_type() for backwards compatibility.
Definition: mem.h:98
coap_free
COAP_STATIC_INLINE void coap_free(void *object)
Wrapper function to coap_free_type() for backwards compatibility.
Definition: mem.h:105
coap_context_t
The CoAP stack's global state is stored in a coap_context_t object.
Definition: coap_net_internal.h:45
coap_digest_t
Definition: coap_cache_internal.h:30
coap_dtls_cpsk_t
The structure used for defining the Client PSK setup data to be used.
Definition: coap_dtls.h:338
coap_dtls_pki_t
The structure used for defining the PKI setup data to be used.
Definition: coap_dtls.h:244
coap_dtls_spsk_t
The structure used for defining the Server PSK setup data to be used.
Definition: coap_dtls.h:425
coap_local_hash_t
Definition: coap_notls.c:188
coap_local_hash_t::ofs
size_t ofs
Definition: coap_notls.c:189
coap_local_hash_t::key
coap_key_t key[8]
Definition: coap_notls.c:190
coap_session_t
Abstraction of virtual session that can be attached to coap_context_t (client) or coap_endpoint_t (se...
Definition: coap_session_internal.h:48
coap_tls_version_t
The structure used for returning the underlying (D)TLS library information.
Definition: coap_dtls.h:64
coap_tls_version_t::type
coap_tls_library_t type
Library type.
Definition: coap_dtls.h:66
coap_tls_version_t::version
uint64_t version
(D)TLS runtime Library Version
Definition: coap_dtls.h:65