NetBSD-5.0.2/usr.bin/tn3270/api/apilib.c
/* $NetBSD: apilib.c,v 1.7 2003/08/07 11:16:24 agc Exp $ */
/*-
* Copyright (c) 1988 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#if defined(__RCSID) && !defined(lint)
#if 0
static char sccsid[] = "@(#)apilib.c 4.2 (Berkeley) 4/26/91";
#else
__RCSID("$NetBSD: apilib.c,v 1.7 2003/08/07 11:16:24 agc Exp $");
#endif
#endif /* not lint */
#include "../ctlr/api.h"
#include "apilib.h"
int
api_sup_errno = 0, /* Supervisor error number */
api_sup_fcn_id = 0, /* Supervisor function id (0x12) */
api_fcn_errno = 0, /* Function error number */
api_fcn_fcn_id = 0; /* Function ID (0x6b, etc.) */
static int
gate_sessmgr = 0,
gate_keyboard = 0,
gate_copy = 0,
gate_oiam = 0;
/* apilib.c */
static int api_issue_regs(int, int , int , int , int , int , char *, int,
union REGS *, struct SREGS *);
static int api_issue(int, int , int , int , int , int , char *, int);
/*
* Issue an API request, with reg structures supplied by the caller.
*
* Only certain routines need this (supervisor services come to mind).
*/
static int
api_issue_regs(ah, al, bh, bl, cx, dx, parms, length, regs, sregs)
int ah, al, bh, bl, cx, dx;
char *parms;
int length;
union REGS *regs;
struct SREGS *sregs;
{
char far *ourseg = parms;
regs->h.ah = ah;
regs->h.al = al;
regs->h.bh = bh;
regs->h.bl = bl;
regs->x.cx = cx;
regs->x.dx = dx;
sregs->es = FP_SEG(ourseg);
regs->x.di = FP_OFF(ourseg);
#if defined(MSDOS)
int86x(API_INTERRUPT_NUMBER, regs, regs, sregs);
#endif /* defined(MSDOS) */
#if defined(unix)
api_exch_api(regs, sregs, parms, length);
#endif /* defined(unix) */
if (regs->h.cl != 0) {
api_sup_errno = regs->h.cl;
return -1;
} else {
return 0;
}
}
/*
* Issue an API request without requiring caller to supply
* registers. Most routines use this.
*/
static int
api_issue(ah, al, bh, bl, cx, dx, parms, length)
int
ah,
al,
bh,
bl,
cx,
dx;
char *parms;
int length; /* Length of parms */
{
union REGS regs;
struct SREGS sregs;
return api_issue_regs(ah, al, bh, bl, cx, dx, parms, length, ®s, &sregs);
}
/*
* Supervisor Services
*/
int
api_name_resolve(name)
char *name;
{
NameResolveParms parms;
int i;
union REGS regs;
struct SREGS sregs;
for (i = 0; i < sizeof parms.gate_name; i++) {
if (*name) {
parms.gate_name[i] = *name++;
} else {
parms.gate_name[i] = ' ';
}
}
if (api_issue_regs(NAME_RESOLUTION, 0, 0, 0, 0, 0, (char *) &parms,
sizeof parms, ®s, &sregs) == -1) {
return -1;
} else {
return regs.x.dx;
}
}
#if defined(unix)
/*
* Block until the oia or ps is modified.
*/
int
api_ps_or_oia_modified()
{
union REGS regs;
struct SREGS sregs;
if (api_issue_regs(PS_OR_OIA_MODIFIED, 0, 0, 0, 0, 0, (char *) 0,
0, ®s, &sregs) == -1) {
return -1;
} else {
return 0;
}
}
#endif /* defined(unix) */
/*
* Session Information Services
*/
int
api_query_session_id(parms)
QuerySessionIdParms *parms;
{
if (api_issue(0x09, QUERY_SESSION_ID, 0x80, 0x20, 0,
gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_query_session_parameters(parms)
QuerySessionParametersParms *parms;
{
if (api_issue(0x09, QUERY_SESSION_PARAMETERS, 0x80, 0x20, 0,
gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_query_session_cursor(parms)
QuerySessionCursorParms *parms;
{
if (api_issue(0x09, QUERY_SESSION_CURSOR, 0x80, 0x20, 0xff,
gate_sessmgr, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
/*
* Keyboard Services
*/
int
api_connect_to_keyboard(parms)
ConnectToKeyboardParms *parms;
{
if (api_issue(0x09, CONNECT_TO_KEYBOARD, 0x80, 0x20, 0,
gate_keyboard, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_disconnect_from_keyboard(parms)
DisconnectFromKeyboardParms *parms;
{
if (api_issue(0x09, DISCONNECT_FROM_KEYBOARD, 0x80, 0x20, 0,
gate_keyboard, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_write_keystroke(parms)
WriteKeystrokeParms *parms;
{
if (api_issue(0x09, WRITE_KEYSTROKE, 0x80, 0x20, 0,
gate_keyboard, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_disable_input(parms)
DisableInputParms *parms;
{
if (api_issue(0x09, DISABLE_INPUT, 0x80, 0x20, 0,
gate_keyboard, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
int
api_enable_input(parms)
EnableInputParms *parms;
{
if (api_issue(0x09, ENABLE_INPUT, 0x80, 0x20, 0,
gate_keyboard, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
/*
* Copy Services
*/
int
api_copy_string(parms)
CopyStringParms *parms;
{
if (api_issue(0x09, COPY_STRING, 0x80, 0x20, 0xff,
gate_copy, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
/*
* Operator Information Area Services
*/
int
api_read_oia_group(parms)
ReadOiaGroupParms *parms;
{
if (api_issue(0x09, READ_OIA_GROUP, 0x80, 0x20, 0xff,
gate_oiam, (char *)parms, sizeof *parms) == -1) {
api_fcn_errno = 0;
api_fcn_fcn_id = 0;
return -1;
} else if (parms->rc == 0) {
return 0;
} else {
api_fcn_errno = parms->rc;
api_fcn_fcn_id = parms->function_id;
return -1;
}
}
/*
* The "we are done" routine. This gets called last.
*/
int
api_finish()
{
#if defined(unix)
if (api_close_api() == -1) {
return -1;
} else {
return 0;
}
#else
return 0;
#endif /* defined(unix) */
}
/*
* The initialization routine. Be sure to call this first.
*/
int
api_init()
{
#if defined(MSDOS)
union REGS regs;
struct SREGS sregs;
regs.h.ah = 0x35;
regs.h.al = API_INTERRUPT_NUMBER;
intdosx(®s, ®s, &sregs);
if ((regs.x.bx == 0) && (sregs.es == 0)) {
return 0; /* Interrupt not being handled */
}
#endif /* defined(MSDOS) */
#if defined(unix)
if (api_open_api((char *)0) == -1) {
return 0;
}
#endif /* defined(unix) */
gate_sessmgr = api_name_resolve("SESSMGR");
gate_keyboard = api_name_resolve("KEYBOARD");
gate_copy = api_name_resolve("COPY");
gate_oiam = api_name_resolve("OIAM");
if ((gate_sessmgr == gate_keyboard) ||
(gate_sessmgr == gate_copy) ||
(gate_sessmgr == gate_oiam) ||
(gate_keyboard == gate_copy) ||
(gate_keyboard == gate_oiam) ||
(gate_copy == gate_oiam)) {
return 0; /* Interrupt doesn't seem correct */
}
return 1;
}