MODULE LinNet ["libc.so.70.0"];

	(*
		A. V. Shiryaev, 2012.11, 2013.08

		OpenBSD 5.4
		32-bit
	*)

	IMPORT Libc := LinLibc;

	CONST
		INVALID_SOCKET* = -1;
		SOCKET_ERROR* = -1;

		(* /usr/include/sys/socket.h *)
			SOCK_STREAM* = 1; (* stream socket *)
			SOCK_DGRAM* = 2; (* datagram socket *)
			SOCK_RAW* = 3; (* raw-protocol interface *)
			SOCK_RDM* = 4; (* reliably-delivered message *)
			SOCK_SEQPACKET* = 5; (* sequenced packet stream *)
			AF_UNSPEC* = 0; (* unspecified *)
			AF_LOCAL* = 1; (* local to host (pipes, portals) *)
			AF_UNIX* = AF_LOCAL; (* backward compatibility *)
			AF_INET* = 2; (* internetwork: UDP, TCP, etc. *)
			AF_IMPLINK* = 3; (* arpanet imp addresses *)
			AF_PUP* = 4; (* pup protocols: e.g. BSP *)
			AF_CHAOS* = 5; (* mit CHAOS protocols *)
			AF_NS* = 6; (* XEROX NS protocols *)
			AF_ISO* = 7; (* ISO protocols *)
			AF_ECMA* = 8; (* european computer manufacturers *)
			AF_DATAKIT* = 9; (* datakit protocols *)
			AF_CCITT* = 10; (* CCITT protocols, X.25 etc *)
			AF_SNA* = 11; (* IBM SNA *)
			AF_DECnet* = 12; (* DECnet *)
			AF_DLI* = 13; (* DEC Direct data link interface *)
			AF_LAT* = 14; (* LAT *)
			AF_HYLINK* = 15; (* NSC Hyperchannel *)
			AF_APPLETALK* = 16; (* Apple Talk *)
			AF_ROUTE* = 17; (* Internal Routing Protocol *)
			AF_LINK* = 18; (* Link layer interface *)
			AF_COIP* = 20; (* connection-oriented IP, aka ST II *)
			AF_CNT* = 21; (* Computer Network Technology *)
			AF_IPX* = 23; (* Novell Internet Protocol *)
			AF_INET6* = 24; (* IPv6 *)
			AF_ISDN* = 26; (* Integrated Services Digital Network *)
			AF_E164* = AF_ISDN; (* CCITT E.164 recommendation *)
			AF_NATM* = 27; (* native ATM access *)
			AF_ENCAP* = 28;
			AF_SIP* = 29; (* Simple Internet Protocol *)
			AF_KEY* = 30;
			AF_BLUETOOTH* = 32; (* Bluetooth *)
			AF_MPLS* = 33; (* MPLS *)
			AF_MAX* = 36;
			SHUT_RD* = 0;
			SHUT_WR* = 1;
			SHUT_RDWR* = 2;
			SOMAXCONN* = 128;
			SO_DEBUG* = {0}; (* turn on debugging info recording *)
			SO_ACCEPTCONN* = {1}; (* socket has had listen() *)
			SO_REUSEADDR* = {2}; (* allow local address reuse *)
			SO_KEEPALIVE* = {3}; (* keep connections alive *)
			SO_DONTROUTE* = {4}; (* just use interface addresses *)
			SO_BROADCAST* = {5}; (* permit sending of broadcast msgs *)
			SO_USELOOPBACK* = {6}; (* bypass hardware when possible *)
			SO_LINGER* = {7}; (* linger on close if data present *)
			SO_OOBINLINE* = {8}; (* leave received OOB data in line *)
			SO_REUSEPORT* = {9}; (* allow local address & port reuse *)
			SO_TIMESTAMP* = {11}; (* timestamp received dgram traffic *)
			SO_BINDANY* = {12}; (* allow bind to any address *)
			SO_SNDBUF* = {0,12}; (* send buffer size *)
			SO_RCVBUF* = {1,12}; (* receive buffer size *)
			SO_SNDLOWAT* = {0,1,12}; (* send low-water mark *)
			SO_RCVLOWAT* = {2,12}; (* receive low-water mark *)
			SO_SNDTIMEO* = {0,2,12}; (* send timeout *)
			SO_RCVTIMEO* = {1,2,12}; (* receive timeout *)
			SO_ERROR* = {0..2,12}; (* get error status and clear *)
			SO_TYPE* = {3,12}; (* get socket type *)
			SO_NETPROC* = {5,12}; (* multiplex; network processing *)
			SO_RTABLE* = {0,5,12}; (* routing table to be used *)
			SO_PEERCRED* = {1,5,12}; (* get connect-time credentials *)
			SO_SPLICE* = {0,1,5,12}; (* splice data to other socket *)
			SOL_SOCKET* = 0FFFFH; (* {0..15} *) (* options for socket level *)
			MSG_OOB* = {0}; (* process out-of-band data *)
			MSG_PEEK* = {1}; (* peek at incoming message *)
			MSG_DONTROUTE* = {2}; (* send without using routing tables *)
			MSG_EOR* = {3}; (* data completes record *)
			MSG_TRUNC* = {4}; (* data discarded before delivery *)
			MSG_CTRUNC* = {5}; (* control data lost before delivery *)
			MSG_WAITALL* = {6}; (* wait for full request or error *)
			MSG_DONTWAIT* = {7}; (* this message should be nonblocking *)
			MSG_BCAST* = {8}; (* this message rec'd as broadcast *)
			MSG_MCAST* = {9}; (* this message rec'd as multicast *)
			MSG_NOSIGNAL* = {10}; (* do not send SIGPIPE *)

		(* /usr/include/netinet/in.h *)
			INADDR_NONE* = -1;
			IPPROTO_IP* = 0; (* dummy for IP *)
			IPPROTO_HOPOPTS* = IPPROTO_IP; (* Hop-by-hop option header *)
			IPPROTO_ICMP* = 1; (* control message protocol *)
			IPPROTO_IGMP* = 2; (* group mgmt protocol *)
			IPPROTO_GGP* = 3; (* gateway^2 (deprecated) *)
			IPPROTO_IPIP* = 4; (* IP inside IP *)
			IPPROTO_IPV4* = IPPROTO_IPIP; (* IP inside IP *)
			IPPROTO_TCP* = 6; (* tcp *)
			IPPROTO_EGP* = 8; (* exterior gateway protocol *)
			IPPROTO_PUP* = 12; (* pup *)
			IPPROTO_UDP* = 17; (* user datagram protocol *)
			IPPROTO_IDP* = 22; (* xns idp *)
			IPPROTO_TP* = 29; (* tp-4 w/ class negotiation *)
			IPPROTO_IPV6* = 41; (* IPv6 in IPv6 *)
			IPPROTO_ROUTING* = 43; (* Routing header *)
			IPPROTO_FRAGMENT* = 44; (* Fragmentation/reassembly header *)
			IPPROTO_RSVP* = 46; (* resource reservation *)
			IPPROTO_GRE* = 47; (* GRE encap, RFCs 1701/1702 *)
			IPPROTO_ESP* = 50; (* Encap. Security Payload *)
			IPPROTO_AH* = 51; (* Authentication header *)
			IPPROTO_MOBILE* = 55; (* IP Mobility, RFC 2004 *)
			IPPROTO_ICMPV6* = 58; (* ICMP for IPv6 *)
			IPPROTO_NONE* = 59; (* No next header *)
			IPPROTO_DSTOPTS* = 60; (* Destination options header *)
			IPPROTO_EON* = 80; (* ISO cnlp *)
			IPPROTO_ETHERIP* = 97; (* Ethernet in IPv4 *)
			IPPROTO_ENCAP* = 98; (* encapsulation header *)
			IPPROTO_PIM* = 103; (* Protocol indep. multicast *)
			IPPROTO_IPCOMP* = 108; (* IP Payload Comp. Protocol *)
			IPPROTO_CARP* = 112; (* CARP *)
			IPPROTO_MPLS* = 137; (* unicast MPLS packet *)
			IPPROTO_PFSYNC* = 240; (* PFSYNC *)
			IPPROTO_RAW* = 255; (* raw IP packet *)
			IPPROTO_MAX* = 256;
			IPPROTO_DIVERT* = 258; (* Divert sockets *)
			IPPROTO_DONE* = 257;
			IPPROTO_DIVERT_RESP* = 01H; (* {0} *) (* divert response packets *)
			IPPROTO_DIVERT_INIT* = 02H; (* {1} *) (* divert packets initial direction *)

		(* /usr/include/sys/param.h *)
			MAXHOSTNAMELEN* = 256; (* max hostname size *)

		(* /usr/include/netdb.h *)
			NETDB_INTERNAL* = -1; (* see errno *)
			NETDB_SUCCESS* = 0; (* no problem *)
			HOST_NOT_FOUND* = 1; (* Authoritative Answer Host not found *)
			TRY_AGAIN* = 2; (* Non-Authoritative Host not found, or SERVERFAIL *)
			NO_RECOVERY* = 3; (* Non recoverable errors, FORMERR, REFUSED, NOTIMP *)
			NO_DATA* = 4; (* Valid name, no data record of requested type *)
			NO_ADDRESS* = NO_DATA; (* no address *)
			NI_MAXHOST* = MAXHOSTNAMELEN; (* max host name returned by getnameinfo *)
			NI_MAXSERV* = 32; (* max serv. name length returned by getnameinfo *)
			RRSET_VALIDATED* = 1;
			ERRSET_SUCCESS* = 0;
			ERRSET_NOMEMORY* = 1;
			ERRSET_FAIL* = 2;
			ERRSET_INVAL* = 3;
			ERRSET_NONAME* = 4;
			ERRSET_NODATA* = 5;

		(* /usr/include/sys/select.h *)
			FD_SETSIZE = 1024;
			__NBBY = 8;

	TYPE
		SOCKET* = INTEGER;

		(* /usr/include/sys/_types.h *)
			socklen_t* = INTEGER;
			sa_family_t* = SHORTCHAR;
			in_addr_t* = INTEGER;
			in_port_t* = SHORTINT;

		(* /usr/include/sys/socket.h *)
			sockaddr* = RECORD [untagged]
				sa_len*: SHORTCHAR; (* total length *)
				sa_family*: sa_family_t; (* address family *)
				sa_data*: ARRAY [untagged] 14 OF SHORTCHAR; (* actually longer; address value *)
			END;
			sockaddr_storage* = RECORD [untagged]
				ss_len*: SHORTCHAR; (* total length *)
				ss_family*: sa_family_t; (* address family *)
				__ss_pad1: ARRAY [untagged] 6 OF SHORTCHAR; (* align to quad *)
				__ss_pad2: LONGINT; (* force alignment for stupid compilers *)
				__ss_pad3: ARRAY [untagged] 240 OF SHORTCHAR; (* pad to a total of 256 bytes *)
			END;

		(* /usr/include/netinet/in.h *)
(*
			in_addr* = RECORD [untagged]
				s_addr*: in_addr_t;
			END;
*)
			in_addr* = RECORD [untagged]
				S_un*: RECORD [union]
					S_un_b*: RECORD [untagged]
						s_b1*: SHORTCHAR;
						s_b2*: SHORTCHAR;
						s_b3*: SHORTCHAR;
						s_b4*: SHORTCHAR;
					END;
					S_un_w*: RECORD [untagged]
						s_w1*: SHORTINT;
						s_w2*: SHORTINT;
					END;
					S_addr*: in_addr_t;
				END;
			END;

			sockaddr_in* = RECORD [untagged]
				sin_len*: SHORTCHAR;
				sin_family*: sa_family_t;
				sin_port*: in_port_t;
				sin_addr*: in_addr;
				sin_zero*: ARRAY [untagged] 8 OF SHORTCHAR;
			END;

		(* /usr/include/netdb.h *)
			Ptrhostent* = POINTER TO hostent;
			hostent* = RECORD [untagged]
				h_name*: Libc.PtrSTR; (* official name of host *)
				h_aliases*: POINTER TO ARRAY [untagged] OF Libc.PtrSTR; (* alias list *)
				h_addrtype*: INTEGER; (* host address type *)
				h_length*: INTEGER; (* length of address *)
				h_addr_list*: POINTER TO ARRAY [untagged] OF POINTER TO ARRAY [untagged] OF in_addr; (* list of addresses from name server *)
			END;

		(* /usr/include/sys/time.h *)
			timeval* = RECORD [untagged]
				tv_sec*: INTEGER; (* seconds *)
				tv_usec*: INTEGER; (* and microseconds *)
			END;

		(* /usr/include/sys/select.h *)
			__fd_mask = SET;
			fd_set* = ARRAY [untagged] (FD_SETSIZE + (SIZE(__fd_mask) * __NBBY - 1)) DIV (SIZE(__fd_mask) * __NBBY) OF __fd_mask;

	VAR
		h_errno*: INTEGER;

	PROCEDURE [ccall] socket* (domain: INTEGER; type: INTEGER; protocol: INTEGER): SOCKET;
	PROCEDURE [ccall] accept* (s: SOCKET; VAR addr: sockaddr; VAR addrlen: socklen_t): SOCKET;
	PROCEDURE [ccall] bind* (s: SOCKET; VAR name: sockaddr; namelen: socklen_t): INTEGER;
	PROCEDURE [ccall] connect* (s: SOCKET; VAR name: sockaddr; namelen: socklen_t): INTEGER;
	PROCEDURE [ccall] listen* (s: SOCKET; backlog: INTEGER): INTEGER;
	PROCEDURE [ccall] recv* (s: SOCKET; buf: Libc.PtrVoid; len: Libc.size_t; flags: SET): Libc.ssize_t;
	PROCEDURE [ccall] send* (s: SOCKET; msg: Libc.PtrVoid; len: Libc.size_t; flags: SET): Libc.ssize_t;
	PROCEDURE [ccall] shutdown* (s: SOCKET; how: INTEGER): INTEGER;
	PROCEDURE [ccall] getsockopt* (s: SOCKET; level: INTEGER; optname: SET; optval: Libc.PtrVoid; VAR optlen: socklen_t): INTEGER;
	PROCEDURE [ccall] setsockopt* (s: SOCKET; level: INTEGER; optname: SET; optval: Libc.PtrVoid; optlen: socklen_t): INTEGER;

	PROCEDURE [ccall] htons* (host16: SHORTINT): SHORTINT;

	PROCEDURE [ccall] gethostbyname* (name: Libc.PtrSTR): Ptrhostent;
	PROCEDURE [ccall] inet_addr* (cp: Libc.PtrSTR): in_addr_t;

	PROCEDURE [ccall] getsockname* (s: SOCKET; VAR name: sockaddr; VAR namelen: socklen_t): INTEGER;

	PROCEDURE [ccall] hstrerror* (err: INTEGER): Libc.PtrSTR;

(*
	PROCEDURE FD_ZERO (VAR set: Net.fd_set);
		VAR i: INTEGER;
	BEGIN
		i := LEN(set); REPEAT DEC(i); set[i] := {} UNTIL i = 0
	END FD_ZERO;

	PROCEDURE FD_SET (fd: Net.SOCKET; VAR set: Net.fd_set);
	BEGIN
		INCL(set[fd DIV 32], fd MOD 32)
	END FD_SET;
*)

	PROCEDURE [ccall] select* (nfds: INTEGER; VAR [nil] readfds: fd_set; VAR [nil] writefds: fd_set; VAR [nil] exceptfds: fd_set; VAR timeout: timeval): INTEGER;

END LinNet.