fteqw/engine/common/netinc.h

#if !defined(NACL) && !defined(FTE_TARGET_WEB) && !defined(WINRT)
#define HAVE_IPV4	//says we can send and receive AF_INET ipv4 udp packets.
#define HAVE_TCP	//says we can use tcp too (either ipv4 or ipv6)
#define HAVE_PACKET	//if we have the socket api at all...
#endif

#ifndef HAVE_PACKET

	struct sockaddr
	{
		short  sa_family;
	};
/*	struct sockaddr_in
	{
		short  sin_family;
		unsigned short	sin_port;
		in_addr sin_addr;
	};*/
	#define AF_UNSPEC 0
//	#define AF_INET 1

	/*NaCl engines cannot host servers. Regular FTE servers can use the same listening tcpconnect socket to host a websocket connection*/

	#define AF_WEBSOCK 342

	struct sockaddr_websocket
	{
		short  sws_family;
		char url[64];
	};

	#define ntohs BigShort
	#define htons BigShort
	#define htonl BigLong
	#define ntohl BigLong

#elif defined(_WIN32)
	#ifdef _MSC_VER
		#define USEIPX
	#endif
	#define WIN32_LEAN_AND_MEAN
	#include <windows.h>
	#include <winsock2.h>
//	#include "winquake.h"
	#ifdef USEIPX
		#include "wsipx.h"
	#endif
	#include <ws2tcpip.h>
	#include <errno.h>
	#ifndef IPPROTO_IPV6
		/*for msvc6*/
		#define	IPPROTO_IPV6 41
		
		#ifndef EAI_NONAME		
			#define EAI_NONAME 8
		#endif

		struct ip6_scope_id
		{
			union
			{
				struct
				{
					u_long  Zone : 28;
					u_long  Level : 4;
				};
				u_long  Value;
			};
		};

		#if !defined(in_addr6)
		struct in6_addr
		{
			u_char	s6_addr[16];	/* IPv6 address */
		};
		#define sockaddr_in6 sockaddr_in6_fixed /*earlier versions of msvc have a sockaddr_in6 which does _not_ match windows, so this *must* be redefined for any non-final msvc releases or it won't work at all*/
		typedef struct sockaddr_in6
		{
			short  sin6_family;
			u_short  sin6_port;
			u_long  sin6_flowinfo;
			struct in6_addr  sin6_addr;
			union
			{
				u_long  sin6_scope_id;
				struct ip6_scope_id  sin6_scope_struct; 
			};
		};
		struct addrinfo
		{
		  int ai_flags;
		  int ai_family;
		  int ai_socktype;
		  int ai_protocol;
		  size_t ai_addrlen;
		  char* ai_canonname;
		  struct sockaddr * ai_addr;
		  struct addrinfo * ai_next;
		};
		#endif
	#endif
	#ifndef IPV6_V6ONLY
		#define IPV6_V6ONLY 27
	#endif
#else
	#include <sys/time.h>
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <netinet/tcp.h>
	#include <netdb.h>
	#include <sys/ioctl.h>
	#include <sys/uio.h>
	#include <arpa/inet.h>
	#include <errno.h>

	#include <unistd.h>

	#ifdef sun
		#include <sys/filio.h>
	#endif

	#ifdef NeXT
		#include <libc.h>
	#endif

	#if defined(__MORPHOS__) && !defined(ixemul)
		#define closesocket CloseSocket
		#define ioctlsocket IoctlSocket
	#else
		#define closesocket close
		#define ioctlsocket ioctl
	#endif

	#if defined(AF_INET6) && !defined(IPPROTO_IPV6)
		#define IPPROTO_IPV6 IPPROTO_IPV6
	#endif

	#define SOCKET int
#endif

#if defined(_WIN32)
	#define neterrno() WSAGetLastError()
	//this madness is because winsock defines its own errors instead of using system error codes.
	//*AND* microsoft then went and defined names for all the unix ones too... with different values! oh the insanity of it all!
	#define NET_EWOULDBLOCK		WSAEWOULDBLOCK
	#define NET_EINPROGRESS		WSAEINPROGRESS
	#define NET_EMSGSIZE		WSAEMSGSIZE
	#define NET_ECONNRESET		WSAECONNRESET
	#define NET_ECONNABORTED	WSAECONNABORTED
	#define NET_ECONNREFUSED	WSAECONNREFUSED
	#define NET_ETIMEDOUT	WSAETIMEDOUT
	#define NET_ENOTCONN		WSAENOTCONN
	#define NET_EACCES			WSAEACCES
	#define NET_EADDRNOTAVAIL	WSAEADDRNOTAVAIL
	#define NET_EAFNOSUPPORT	WSAEAFNOSUPPORT
#elif defined(__MORPHOS__) && !defined(ixemul)
	#define neterrno() Errno()
#else
	#define neterrno() errno
#endif

#ifndef NET_EWOULDBLOCK
	//assume unix codes instead, so our prefix still works.
	#define NET_EWOULDBLOCK		EWOULDBLOCK
	#define NET_EINPROGRESS		EINPROGRESS
	#define NET_EMSGSIZE		EMSGSIZE
	#define NET_ECONNRESET		ECONNRESET
	#define NET_ECONNABORTED	ECONNABORTED
	#define NET_ECONNREFUSED	ECONNREFUSED
	#define NET_ETIMEDOUT		ETIMEDOUT
	#define NET_ENOTCONN		ENOTCONN
	#define NET_EACCES			EACCES
	#define NET_EADDRNOTAVAIL	EADDRNOTAVAIL
	#define NET_EAFNOSUPPORT	EAFNOSUPPORT
#endif

#ifndef INVALID_SOCKET
	#define INVALID_SOCKET -1
#endif

#ifndef INADDR_LOOPBACK
	#define INADDR_LOOPBACK 0x7f000001
#endif

#if defined(FTE_TARGET_WEB)
	#undef IPPROTO_IPV6
#endif

#if 1//def SUPPORT_ICE
struct icecandinfo_s
{
	char candidateid[64];
	char addr[64];		//v4/v6/fqdn. fqdn should prefer ipv6
	int port;
	int transport;		//0=udp. other values not supported
	int foundation;		//to figure out...
	int component;		//1-based. allows rtp+rtcp in a single ICE... we only support one.
	int priority;		//some random value...
	enum
	{
		ICE_HOST=0,
		ICE_SRFLX=1,	//Server Reflexive (from stun, etc)
		ICE_PRFLX=2,	//Peer Reflexive 
		ICE_RELAY=3,
	} type;				//says what sort of proxy is used.
	char reladdr[64];	//when proxied, this is our local info
	int relport;
	int generation;		//for ice restarts. starts at 0.
	int network;		//which network device this comes from.
};
enum iceproto_e
{
	ICEP_INVALID,	//not allowed..
	ICEP_QWSERVER,	//we're server side
	ICEP_QWCLIENT,	//we're client side
	ICEP_VOICE,		//speex. requires client.
	ICEP_VIDEO		//err... REALLY?!?!?
};
enum icemode_e
{
	ICEM_RAW,	//not actually interactive beyond a simple handshake.
	ICEM_ICE		//rfc5245. meant to be able to holepunch, but not implemented properly yet.
};
enum icestate_e
{
	ICE_INACTIVE,	//idle.
	ICE_FAILED,
	ICE_CONNECTING,	//exchanging pings.
	ICE_CONNECTED	//media is flowing, supposedly. sending keepalives.
};
struct icestate_s;
#define ICE_API_CURRENT "Internet Connectivity Establishment 0.0"
typedef struct
{
	struct icestate_s *(QDECL *ICE_Create)(void *module, char *conname, char *peername, enum icemode_e mode, enum iceproto_e proto);	//doesn't start pinging anything.
	qboolean (QDECL *ICE_Set)(struct icestate_s *con, char *prop, char *value);
	qboolean (QDECL *ICE_Get)(struct icestate_s *con, char *prop, char *value, int valuesize);
	struct icecandinfo_s *(QDECL *ICE_GetLCandidateInfo)(struct icestate_s *con);		//retrieves candidates that need reporting to the peer.
	void (QDECL *ICE_AddRCandidateInfo)(struct icestate_s *con, struct icecandinfo_s *cand);		//stuff that came from the peer.
	void (QDECL *ICE_Close)(struct icestate_s *con);	//bye then.
	void (QDECL *ICE_CloseModule)(void *module);	//closes all unclosed connections, with warning.
} icefuncs_t;
extern icefuncs_t iceapi;
#endif


#define ADDR_NATPMP		(1u<<0)
#define ADDR_UPNPIGP	(1u<<1)

#define FTENET_ADDRTYPES 2
typedef struct ftenet_generic_connection_s {
	char name[MAX_QPATH];

	int (*GetLocalAddresses)(struct ftenet_generic_connection_s *con, unsigned int *adrflags, netadr_t *addresses, int maxaddresses);
	qboolean (*ChangeLocalAddress)(struct ftenet_generic_connection_s *con, netadr_t *newadr);
	qboolean (*GetPacket)(struct ftenet_generic_connection_s *con);
	qboolean (*SendPacket)(struct ftenet_generic_connection_s *con, int length, const void *data, netadr_t *to);
	void (*Close)(struct ftenet_generic_connection_s *con);
#ifdef HAVE_PACKET
	int (*SetReceiveFDSet) (struct ftenet_generic_connection_s *con, fd_set *fdset);	/*set for connections which have multiple sockets (ie: listening tcp connections)*/
#endif

	netadrtype_t addrtype[FTENET_ADDRTYPES];
	qboolean islisten;
#ifdef HAVE_PACKET
	SOCKET thesocket;
#else
	int thesocket;
#endif
} ftenet_generic_connection_t;

#define MAX_CONNECTIONS 8
typedef struct ftenet_connections_s
{
	qboolean islisten;
	unsigned int packetsin;
	unsigned int packetsout;
	unsigned int bytesin;
	unsigned int bytesout;
	unsigned int timemark;
	float packetsinrate;
	float packetsoutrate;
	float bytesinrate;
	float bytesoutrate;
	ftenet_generic_connection_t *conn[MAX_CONNECTIONS];
} ftenet_connections_t;

void ICE_Tick(void);
qboolean ICE_WasStun(netsrc_t netsrc);
void QDECL ICE_AddLCandidateConn(ftenet_connections_t *col, netadr_t *addr, int type);
void QDECL ICE_AddLCandidateInfo(struct icestate_s *con, netadr_t *adr, int adrno, int type);

ftenet_connections_t *FTENET_CreateCollection(qboolean listen);
void FTENET_CloseCollection(ftenet_connections_t *col);
qboolean FTENET_AddToCollection(struct ftenet_connections_s *col, const char *name, const char *address, netadrtype_t addrtype, qboolean islisten);
int NET_EnumerateAddresses(ftenet_connections_t *collection, struct ftenet_generic_connection_s **con, int *adrflags, netadr_t *addresses, int maxaddresses);

vfsfile_t *FS_OpenSSL(const char *hostname, vfsfile_t *source, qboolean server);
#ifdef HAVE_PACKET
vfsfile_t *FS_OpenTCPSocket(SOCKET socket, qboolean conpending, const char *peername);	//conpending allows us to reject any writes until the connection has succeeded
#endif
vfsfile_t *FS_OpenTCP(const char *name, int defaultport);