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/*
* ngtcp2
*
* Copyright (c) 2022 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.
*/
#ifndef NGTCP2_NET_H
#define NGTCP2_NET_H
/* This header file is explicitly allowed to be shared with
ngtcp2_crypto library. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif /* HAVE_CONFIG_H */
#ifdef HAVE_ARPA_INET_H
# include <arpa/inet.h>
#endif /* HAVE_ARPA_INET_H */
#ifdef HAVE_NETINET_IN_H
# include <netinet/in.h>
#endif /* HAVE_NETINET_IN_H */
#ifdef HAVE_BYTESWAP_H
# include <byteswap.h>
#endif /* HAVE_BYTESWAP_H */
#ifdef HAVE_ENDIAN_H
# include <endian.h>
#endif /* HAVE_ENDIAN_H */
#ifdef HAVE_SYS_ENDIAN_H
# include <sys/endian.h>
#endif /* HAVE_SYS_ENDIAN_H */
#include <ngtcp2/ngtcp2.h>
#if defined(HAVE_BSWAP_64) || \
(defined(HAVE_DECL_BSWAP_64) && HAVE_DECL_BSWAP_64 > 0)
# define ngtcp2_bswap64 bswap_64
#else /* !HAVE_BSWAP_64 */
# define ngtcp2_bswap64(N) \
((uint64_t)(ngtcp2_ntohl((uint32_t)(N))) << 32 | \
ngtcp2_ntohl((uint32_t)((N) >> 32)))
#endif /* !HAVE_BSWAP_64 */
#if defined(HAVE_BE64TOH) || \
(defined(HAVE_DECL_BE64TOH) && HAVE_DECL_BE64TOH > 0)
# define ngtcp2_ntohl64(N) be64toh(N)
# define ngtcp2_htonl64(N) htobe64(N)
#else /* !HAVE_BE64TOH */
# if defined(WORDS_BIGENDIAN)
# define ngtcp2_ntohl64(N) (N)
# define ngtcp2_htonl64(N) (N)
# else /* !WORDS_BIGENDIAN */
# define ngtcp2_ntohl64(N) ngtcp2_bswap64(N)
# define ngtcp2_htonl64(N) ngtcp2_bswap64(N)
# endif /* !WORDS_BIGENDIAN */
#endif /* !HAVE_BE64TOH */
#if defined(WIN32)
/* Windows requires ws2_32 library for ntonl family functions. We
define inline functions for those function so that we don't have
dependeny on that lib. */
# ifdef _MSC_VER
# define STIN static __inline
# else
# define STIN static inline
# endif
STIN uint32_t ngtcp2_htonl(uint32_t hostlong) {
uint32_t res;
unsigned char *p = (unsigned char *)&res;
*p++ = (unsigned char)(hostlong >> 24);
*p++ = (hostlong >> 16) & 0xffu;
*p++ = (hostlong >> 8) & 0xffu;
*p = hostlong & 0xffu;
return res;
}
STIN uint16_t ngtcp2_htons(uint16_t hostshort) {
uint16_t res;
unsigned char *p = (unsigned char *)&res;
*p++ = (unsigned char)(hostshort >> 8);
*p = hostshort & 0xffu;
return res;
}
STIN uint32_t ngtcp2_ntohl(uint32_t netlong) {
uint32_t res;
unsigned char *p = (unsigned char *)&netlong;
res = (uint32_t)(*p++ << 24);
res += (uint32_t)(*p++ << 16);
res += (uint32_t)(*p++ << 8);
res += *p;
return res;
}
STIN uint16_t ngtcp2_ntohs(uint16_t netshort) {
uint16_t res;
unsigned char *p = (unsigned char *)&netshort;
res = (uint16_t)(*p++ << 8);
res += *p;
return res;
}
#else /* !WIN32 */
# define ngtcp2_htonl htonl
# define ngtcp2_htons htons
# define ngtcp2_ntohl ntohl
# define ngtcp2_ntohs ntohs
#endif /* !WIN32 */
#endif /* NGTCP2_NET_H */
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