nes-proj/os/net/app-layer/coap/coap-keystore-simple.c

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/*
* Copyright (c) 2017, RISE SICS AB.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \file
* A simple keystore with fixed credentials.
* \author
* Niclas Finne <nfi@sics.se>
* Joakim Eriksson <joakime@sics.se>
*/
/**
* \addtogroup coap-keystore
* @{
*/
#include "coap-endpoint.h"
#include "coap-keystore.h"
#include <string.h>
#ifdef WITH_DTLS
#ifdef COAP_DTLS_PSK_DEFAULT_IDENTITY
#ifdef COAP_DTLS_PSK_DEFAULT_KEY
/*---------------------------------------------------------------------------*/
static int
get_default_psk_info(const coap_endpoint_t *address_info,
coap_keystore_psk_entry_t *info)
{
if(info != NULL) {
if(info->identity == NULL || info->identity_len == 0) {
/* Identity requested */
info->identity = (uint8_t *)COAP_DTLS_PSK_DEFAULT_IDENTITY;
info->identity_len = strlen(COAP_DTLS_PSK_DEFAULT_IDENTITY);
return 1;
}
if(info->identity_len != strlen(COAP_DTLS_PSK_DEFAULT_IDENTITY) ||
memcmp(info->identity, COAP_DTLS_PSK_DEFAULT_IDENTITY,
info->identity_len) != 0) {
/* Identity not matching */
return 0;
}
info->key = (uint8_t *)COAP_DTLS_PSK_DEFAULT_KEY;
info->key_len = strlen(COAP_DTLS_PSK_DEFAULT_KEY);
return 1;
}
return 0;
}
static const coap_keystore_t simple_key_store = {
.coap_get_psk_info = get_default_psk_info
};
/*---------------------------------------------------------------------------*/
#endif /* COAP_DTLS_PSK_DEFAULT_KEY */
#endif /* COAP_DTLS_PSK_DEFAULT_IDENTITY */
#endif /* WITH_DTLS */
/*---------------------------------------------------------------------------*/
void
coap_keystore_simple_init(void)
{
#ifdef WITH_DTLS
#ifdef COAP_DTLS_PSK_DEFAULT_IDENTITY
#ifdef COAP_DTLS_PSK_DEFAULT_KEY
coap_set_keystore(&simple_key_store);
#endif /* COAP_DTLS_PSK_DEFAULT_KEY */
#endif /* COAP_DTLS_PSK_DEFAULT_IDENTITY */
#endif /* WITH_DTLS */
}
/*---------------------------------------------------------------------------*/
/** @} */