mbed port of tinydtls
peer.c
- Committer:
- ashleymills
- Date:
- 2013-10-11
- Revision:
- 1:bc8a649bad13
- Parent:
- 0:04990d454f45
File content as of revision 1:bc8a649bad13:
/* dtls -- a very basic DTLS implementation * * Copyright (C) 2011--2013 Olaf Bergmann <bergmann@tzi.org> * * Permission is hereby granted, free of charge, to any person * obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without * restriction, including without limitation the rights to use, copy, * modify, merge, publish, distribute, sublicense, and/or sell copies * of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #define __DEBUG__ 4 #ifndef __MODULE__ #define __MODULE__ "peer.c" #endif #include "peer.h" #include "debug.h" #include "dbg.h" #ifndef NDEBUG #include <stdio.h> extern size_t dsrv_print_addr(const session_t *addr, unsigned char *buf, size_t len); #endif /* NDEBUG */ #ifndef WITH_CONTIKI void peer_init() { } static inline dtls_peer_t * dtls_malloc_peer() { return (dtls_peer_t *)malloc(sizeof(dtls_peer_t)); } void dtls_free_peer(dtls_peer_t *peer) { free(peer); } #else /* WITH_CONTIKI */ PROCESS(dtls_retransmit_process, "DTLS retransmit process"); #include "memb.h" MEMB(peer_storage, dtls_peer_t, DTLS_PEER_MAX); void peer_init() { memb_init(&peer_storage); } static inline dtls_peer_t * dtls_malloc_peer() { return memb_alloc(&peer_storage); } void dtls_free_peer(dtls_peer_t *peer) { memb_free(&peer_storage, peer); } #endif /* WITH_CONTIKI */ dtls_peer_t * dtls_new_peer(const session_t *session) { DBG("Entered dtls_new_peer"); dtls_peer_t *peer; peer = dtls_malloc_peer(); if (peer) { memset(peer, 0, sizeof(dtls_peer_t)); memcpy(&peer->session, session, sizeof(session_t)); #ifndef NDEBUG if (dtls_get_log_level() >= LOG_DEBUG) { unsigned char addrbuf[72]; dsrv_print_addr(session, addrbuf, sizeof(addrbuf)); DBG("Created peer for: \"%s\"", addrbuf); } #endif /* initially allow the NULL cipher */ CURRENT_CONFIG(peer)->cipher = TLS_NULL_WITH_NULL_NULL; /* initialize the handshake hash wrt. the hard-coded DTLS version */ DBG("DTLSv12: initialize HASH_SHA256"); /* TLS 1.2: PRF(secret, label, seed) = P_<hash>(secret, label + seed) */ /* FIXME: we use the default SHA256 here, might need to support other hash functions as well */ dtls_hash_init(&peer->hs_state.hs_hash); } DBG("New peer created @ %u",peer); return peer; }