godot/drivers/unix/socket_helpers.h

#ifndef SOCKET_HELPERS_H
#define SOCKET_HELPERS_H

#include <string.h>

// 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<String> *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 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(&addr6->sin6_addr.s6_addr, r_ip.field8, 16);

		r_port = ntohs(addr6->sin6_port);
	};
};


#endif