/* * 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 #endif /* HAVE_CONFIG_H */ #ifdef HAVE_ARPA_INET_H # include #endif /* HAVE_ARPA_INET_H */ #ifdef HAVE_NETINET_IN_H # include #endif /* HAVE_NETINET_IN_H */ #ifdef HAVE_BYTESWAP_H # include #endif /* HAVE_BYTESWAP_H */ #ifdef HAVE_ENDIAN_H # include #endif /* HAVE_ENDIAN_H */ #ifdef HAVE_SYS_ENDIAN_H # include #endif /* HAVE_SYS_ENDIAN_H */ #include #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 */