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/* WIDE AREA INFORMATION SERVER SOFTWARE
No guarantees or restrictions. See the readme file for the full standard
disclaimer.
3.26.90
*/
/* wais-message.h
*
* This is the header outside of WAIS Z39.50 messages. The header will be
* printable ascii, so as to be transportable. This header will precede each
* Z39.50 APDU, or zero-length message if it is an ACK or NACK. Be sure to
* change hdr_vers current value if you change the structure of the header.
*
* The characters in the header are case insensitive so that the systems from
* the past that only handle one case can at least read the header.
*
* 7.5.90 HWM - added constants
* 7/5/90 brewster added funtion prototypes and comments
* 11/30/90 HWM - went to version 2 (inits and typed retrieval)
*/
#ifndef WMESSAGE_H
#define WMESSAGE_H
#include "cdialect.h"
typedef struct wais_header {
char msg_len[10]; /* length in bytes of following message */
char msg_type; /* type of message: 'z'=Z39.50 APDU,
'a'=ACK, 'n'=NACK */
char hdr_vers; /* version of this header, currently = '2' */
char server[10]; /* name or address of server */
char compression; /* <sp>=no compression, 'u'=unix compress */
char encoding; /* <sp>=no encoding, 'h'=hexize,
'u'=uuencode */
char msg_checksum; /* XOR of every byte of message */
} WAISMessage;
#define HEADER_LENGTH 25 /* number of bytes needed to write a
wais-header (not sizeof(wais_header)) */
#define HEADER_VERSION (long)'2'
/* message type */
#define Z3950 'z'
#define ACK 'a'
#define NAK 'n'
/* compression */
#define NO_COMPRESSION ' '
#define UNIX_COMPRESSION 'u'
/* encoding */
#define NO_ENCODING ' '
#define HEX_ENCODING 'h' /* Swartz 4/3 encoding */
#define IBM_HEXCODING 'i' /* same as h but uses characters acceptable for IBM mainframes */
#define UUENCODE 'u'
#ifdef __cplusplus
/* declare these as C style functions */
extern "C"
{
#endif /* def __cplusplus */
void readWAISPacketHeader _AP((char* msgBuffer,WAISMessage *header_struct));
long getWAISPacketLength _AP((WAISMessage* header));
void writeWAISPacketHeader _AP((char* header,long dataLen,long type,
char* server,long compression,
long encoding,long version));
#ifdef __cplusplus
}
#endif /* def __cplusplus */
#endif /* ndef WMESSAGE_H */
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.