#ifndef SOCKET_HELPERS_H #define SOCKET_HELPERS_H #include #ifdef WINDOWS_ENABLED // Workaround mingw missing flags! #ifndef IPV6_V6ONLY #define IPV6_V6ONLY 27 #endif #endif // helpers for sockaddr -> IP_Address and back, should work for posix and winsock. All implementations should use this static size_t _set_sockaddr(struct sockaddr_storage* p_addr, const IP_Address& p_ip, int p_port) { memset(p_addr, 0, sizeof(struct sockaddr_storage)); if (p_ip.type == IP_Address::TYPE_IPV6) { struct sockaddr_in6* addr6 = (struct sockaddr_in6*)p_addr; addr6->sin6_family = AF_INET6; addr6->sin6_port = htons(p_port); copymem(&addr6->sin6_addr.s6_addr, p_ip.field8, 16); return sizeof(sockaddr_in6); } else { struct sockaddr_in* addr4 = (struct sockaddr_in*)p_addr; addr4->sin_family = AF_INET; // host byte order addr4->sin_port = htons(p_port); // short, network byte order addr4->sin_addr = *((struct in_addr*)&p_ip.field32[0]); return sizeof(sockaddr_in); }; }; static size_t _set_listen_sockaddr(struct sockaddr_storage* p_addr, int p_port, IP_Address::AddrType p_address_type, const List *p_accepted_hosts) { memset(p_addr, 0, sizeof(struct sockaddr_storage)); if (p_address_type == IP_Address::TYPE_IPV4) { struct sockaddr_in* addr4 = (struct sockaddr_in*)p_addr; addr4->sin_family = AF_INET; addr4->sin_port = htons(p_port); addr4->sin_addr.s_addr = INADDR_ANY; // TODO: use accepted hosts list return sizeof(sockaddr_in); } else { struct sockaddr_in6* addr6 = (struct sockaddr_in6*)p_addr; addr6->sin6_family = AF_INET6; addr6->sin6_port = htons(p_port); addr6->sin6_addr = in6addr_any; // TODO: use accepted hosts list return sizeof(sockaddr_in6); }; }; static int _socket_create(IP_Address::AddrType p_type, int type, int protocol) { ERR_FAIL_COND_V(p_type > IP_Address::TYPE_ANY || p_type < IP_Address::TYPE_NONE, ERR_INVALID_PARAMETER); int family = p_type == IP_Address::TYPE_IPV4 ? AF_INET : AF_INET6; int sockfd = socket(family, type, protocol); ERR_FAIL_COND_V( sockfd == -1, -1 ); if(family == AF_INET6) { // Ensure IPv4 over IPv6 is enabled int no = 0; if(setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY, (const char*)&no, sizeof(no)) != 0) { WARN_PRINT("Unable to set IPv4 address mapping over IPv6"); } } return sockfd; } static void _set_ip_addr_port(IP_Address& r_ip, int& r_port, struct sockaddr_storage* p_addr) { if (p_addr->ss_family == AF_INET) { r_ip.type = IP_Address::TYPE_IPV4; struct sockaddr_in* addr4 = (struct sockaddr_in*)p_addr; r_ip.field32[0] = (uint32_t)addr4->sin_addr.s_addr; r_port = ntohs(addr4->sin_port); } else if (p_addr->ss_family == AF_INET6) { r_ip.type = IP_Address::TYPE_IPV6; struct sockaddr_in6* addr6 = (struct sockaddr_in6*)p_addr; copymem(&r_ip.field8, addr6->sin6_addr.s6_addr, 16); r_port = ntohs(addr6->sin6_port); }; }; #endif