Copyright (C) 1992, Digital Equipment Corporation
All rights reserved.
See the file COPYRIGHT for a full description.
Last modified on Sat Jul 11 18:04:22 PDT 1992 by muller
modified on Tue Feb 11 22:04:30 PST 1992 by nichols@parc.xerox.com
INTERFACE Uin;
FROM Ctypes IMPORT char;
FROM Utypes IMPORT u_char, u_short, u_long;
IMPORT Word;
Constants and structures defined by the internet system,
Per RFC 790, September 1981.
CONST
IPPROTO_IP = 0; (* dummy for IP *)
IPPROTO_ICMP = 1; (* control message protocol *)
IPPROTO_IGMP = 2; (* group control protocol *)
IPPROTO_GGP = 3; (* gateway^2 (deprecated) *)
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_RSVP = 46; (* resource reservation *)
IPPROTO_EON = 80; (* ISO cnlp *)
IPPROTO_ENCAP = 98; (* encapsulation header *)
IPPROTO_DIVERT = 254; (* divert pseudo-protocol *)
IPPROTO_RAW = 255; (* raw IP packet *)
IPPROTO_MAX = 256;
Port/socket numbers: network standard functions
IPPORT_ECHO = 7;
IPPORT_DISCARD = 9;
IPPORT_SYSTAT = 11;
IPPORT_DAYTIME = 13;
IPPORT_NETSTAT = 15;
IPPORT_FTP = 21;
IPPORT_TELNET = 23;
IPPORT_SMTP = 25;
IPPORT_TIMESERVER = 37;
IPPORT_NAMESERVER = 42;
IPPORT_WHOIS = 43;
IPPORT_MTP = 57;
Port/socket numbers: host specific functions
IPPORT_TFTP = 69;
IPPORT_RJE = 77;
IPPORT_FINGER = 79;
IPPORT_TTYLINK = 87;
IPPORT_SUPDUP = 95;
UNIX TCP sockets
IPPORT_EXECSERVER = 512;
IPPORT_LOGINSERVER = 513;
IPPORT_CMDSERVER = 514;
IPPORT_EFSSERVER = 520;
UNIX UDP sockets
IPPORT_BIFFUDP = 512;
IPPORT_WHOSERVER = 513;
IPPORT_ROUTESERVER = 520; (* 520+1 also used *)
Ports < IPPORT_RESERVED are reserved for privileged processes (e.g. root).
Ports > IPPORT_USERRESERVED are reserved for servers, not necessarily
privileged.
IPPORT_RESERVED = 1024;
IPPORT_USERRESERVED = 5000;
Link numbers
IMPLINK_IP = 155;
IMPLINK_LOWEXPER = 156;
IMPLINK_HIGHEXPER = 158;
TYPE
struct_in_addr = RECORD
s_addr: u_long; END;
struct_in_addr_b = RECORD
s_b1, s_b2, s_b3, s_b4: u_char; END;
struct_in_addr_w = RECORD
s_w1, s_w2: u_short; END;
Definitions of bits in internet address integers.
On subnets, the decomposition of addresses to host and net parts
is done according to subnet mask, not the masks here.
PROCEDURE IN_CLASSA(i: INTEGER): BOOLEAN;
CONST
(* Compiler bug/feature forces us to use Word.Shift *)
IN_CLASSA_NET: u_long = Word.Shift(16_ff0000, 8);
IN_CLASSA_NSHIFT = 24;
IN_CLASSA_HOST = 16_00ffffff;
IN_CLASSA_MAX = 128;
PROCEDURE IN_CLASSB(i: INTEGER): BOOLEAN;
CONST
IN_CLASSB_NET = Word.Shift(16_ffff00, 8);
IN_CLASSB_NSHIFT = 16;
IN_CLASSB_HOST = 16_0000ffff;
IN_CLASSB_MAX = 65536;
PROCEDURE IN_CLASSC(i: INTEGER): BOOLEAN;
CONST
IN_CLASSC_NET = Word.Shift(16_ffffff, 8);
IN_CLASSC_NSHIFT = 8;
IN_CLASSC_HOST = 16_000000ff;
PROCEDURE IN_CLASSD(i: INTEGER): BOOLEAN;
PROCEDURE IN_MULTICAST(i: INTEGER): BOOLEAN;
PROCEDURE IN_EXPERIMENTAL(i: INTEGER): BOOLEAN;
PROCEDURE IN_BADCLASS(i: INTEGER): BOOLEAN;
CONST
INADDR_ANY = 16_00000000;
INADDR_LOOPBACK = 16_7F000001;
INADDR_BROADCAST = Word.Shift(16_ffffff, 8) + 16_ff;
(* must be masked *)
IN_LOOPBACKNET = 127; (* official! *)
Stuff the loopback address into an Internet address.
PROCEDURE IN_SET_LOOPBACK_ADDR(a: struct_sockaddr_in_star);
Socket address, internet style.
TYPE
struct_sockaddr_in = RECORD
sin_len: u_char;
sin_family: u_char;
sin_port: u_short;
sin_addr: struct_in_addr;
sin_zero: ARRAY [0..7] OF char;
END;
struct_sockaddr_in_star = UNTRACED REF struct_sockaddr_in;
Options for use with [gs]etsockopt at the IP level.
CONST
IP_OPTIONS = 1; (* set/get IP per-packet options *)
Procedures for number representation conversion.
PROCEDURE ntohl(x: u_long): u_long;
PROCEDURE ntohs(x: u_short): u_short;
PROCEDURE htonl(x: u_long): u_long;
PROCEDURE htons(x: u_short): u_short;
END Uin.