/* * coap_notls.c -- Stub Datagram Transport Layer Support for libcoap * * Copyright (C) 2016 Olaf Bergmann * * 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" #include "coap3/coap_dtls.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 */