b41ec6590c
Instead of having IP address and UDP port as separate fields in session struct, place them inside an address struct. This way the session size field will have a proper size and we can use the dtls_session_init() function when initializing the session. Change-Id: I0560750bdd7189e24bf720a3bad240df2a3fc7fe Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
84 lines
2.6 KiB
C
84 lines
2.6 KiB
C
/* dtls -- a very basic DTLS implementation
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*
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* Copyright (C) 2011--2014 Olaf Bergmann <bergmann@tzi.org>
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "dtls_config.h"
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#include "session.h"
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#ifdef HAVE_ASSERT_H
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#include <assert.h>
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#else
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#ifndef assert
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#warning "assertions are disabled"
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# define assert(x)
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#endif
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#endif
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#ifdef WITH_CONTIKI
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#define _dtls_address_equals_impl(A,B) \
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((A)->size == (B)->size \
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&& (A)->addr.port == (B)->addr.port \
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&& uip_ipaddr_cmp(&((A)->addr.ipaddr),&((B)->addr.ipaddr)) \
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&& (A)->ifindex == (B)->ifindex)
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#else /* WITH_CONTIKI */
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static inline int
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_dtls_address_equals_impl(const session_t *a,
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const session_t *b) {
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if (a->ifindex != b->ifindex ||
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a->size != b->size || a->addr.sa.sa_family != b->addr.sa.sa_family)
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return 0;
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/* need to compare only relevant parts of sockaddr_in6 */
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switch (a->addr.sa.sa_family) {
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case AF_INET:
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return
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a->addr.sin.sin_port == b->addr.sin.sin_port &&
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memcmp(&a->addr.sin.sin_addr, &b->addr.sin.sin_addr,
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sizeof(struct in_addr)) == 0;
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case AF_INET6:
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return a->addr.sin6.sin6_port == b->addr.sin6.sin6_port &&
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memcmp(&a->addr.sin6.sin6_addr, &b->addr.sin6.sin6_addr,
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sizeof(struct in6_addr)) == 0;
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default: /* fall through and signal error */
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;
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}
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return 0;
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}
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#endif /* WITH_CONTIKI */
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void
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dtls_session_init(session_t *sess) {
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assert(sess);
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memset(sess, 0, sizeof(session_t));
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sess->size = sizeof(sess->addr);
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}
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int
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dtls_session_equals(const session_t *a, const session_t *b) {
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assert(a); assert(b);
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return _dtls_address_equals_impl(a, b);
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}
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