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/*
* ngtcp2
*
* Copyright (c) 2019 ngtcp2 contributors
*
* 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.
*/
#include "ngtcp2_addr.h"
#include <string.h>
#include <assert.h>
#include "ngtcp2_unreachable.h"
ngtcp2_addr *ngtcp2_addr_init(ngtcp2_addr *dest, const ngtcp2_sockaddr *addr,
ngtcp2_socklen addrlen) {
dest->addrlen = addrlen;
dest->addr = (ngtcp2_sockaddr *)addr;
return dest;
}
void ngtcp2_addr_copy(ngtcp2_addr *dest, const ngtcp2_addr *src) {
dest->addrlen = src->addrlen;
if (src->addrlen) {
memcpy(dest->addr, src->addr, (size_t)src->addrlen);
}
}
void ngtcp2_addr_copy_byte(ngtcp2_addr *dest, const ngtcp2_sockaddr *addr,
ngtcp2_socklen addrlen) {
dest->addrlen = addrlen;
if (addrlen) {
memcpy(dest->addr, addr, (size_t)addrlen);
}
}
static int sockaddr_eq(const ngtcp2_sockaddr *a, const ngtcp2_sockaddr *b) {
assert(a->sa_family == b->sa_family);
switch (a->sa_family) {
case NGTCP2_AF_INET: {
const ngtcp2_sockaddr_in *ai = (const ngtcp2_sockaddr_in *)(void *)a,
*bi = (const ngtcp2_sockaddr_in *)(void *)b;
return ai->sin_port == bi->sin_port &&
memcmp(&ai->sin_addr, &bi->sin_addr, sizeof(ai->sin_addr)) == 0;
}
case NGTCP2_AF_INET6: {
const ngtcp2_sockaddr_in6 *ai = (const ngtcp2_sockaddr_in6 *)(void *)a,
*bi = (const ngtcp2_sockaddr_in6 *)(void *)b;
return ai->sin6_port == bi->sin6_port &&
memcmp(&ai->sin6_addr, &bi->sin6_addr, sizeof(ai->sin6_addr)) == 0;
}
default:
ngtcp2_unreachable();
}
}
int ngtcp2_addr_eq(const ngtcp2_addr *a, const ngtcp2_addr *b) {
return a->addr->sa_family == b->addr->sa_family &&
sockaddr_eq(a->addr, b->addr);
}
uint32_t ngtcp2_addr_compare(const ngtcp2_addr *aa, const ngtcp2_addr *bb) {
uint32_t flags = NGTCP2_ADDR_COMPARE_FLAG_NONE;
const ngtcp2_sockaddr *a = aa->addr;
const ngtcp2_sockaddr *b = bb->addr;
if (a->sa_family != b->sa_family) {
return NGTCP2_ADDR_COMPARE_FLAG_FAMILY;
}
switch (a->sa_family) {
case NGTCP2_AF_INET: {
const ngtcp2_sockaddr_in *ai = (const ngtcp2_sockaddr_in *)(void *)a,
*bi = (const ngtcp2_sockaddr_in *)(void *)b;
if (memcmp(&ai->sin_addr, &bi->sin_addr, sizeof(ai->sin_addr))) {
flags |= NGTCP2_ADDR_COMPARE_FLAG_ADDR;
}
if (ai->sin_port != bi->sin_port) {
flags |= NGTCP2_ADDR_COMPARE_FLAG_PORT;
}
return flags;
}
case NGTCP2_AF_INET6: {
const ngtcp2_sockaddr_in6 *ai = (const ngtcp2_sockaddr_in6 *)(void *)a,
*bi = (const ngtcp2_sockaddr_in6 *)(void *)b;
if (memcmp(&ai->sin6_addr, &bi->sin6_addr, sizeof(ai->sin6_addr))) {
flags |= NGTCP2_ADDR_COMPARE_FLAG_ADDR;
}
if (ai->sin6_port != bi->sin6_port) {
flags |= NGTCP2_ADDR_COMPARE_FLAG_PORT;
}
return flags;
}
default:
ngtcp2_unreachable();
}
}
int ngtcp2_addr_empty(const ngtcp2_addr *addr) { return addr->addrlen == 0; }
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