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-rw-r--r--comms/tn3270/files/api/apilib.c435
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diff --git a/comms/tn3270/files/api/apilib.c b/comms/tn3270/files/api/apilib.c
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-/* $NetBSD: apilib.c,v 1.1.1.1 2010/01/17 01:33:17 dholland Exp $ */
-/* From 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 1.1.1.1 2010/01/17 01:33:17 dholland 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, &regs, &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, &regs, &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, &regs, &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(&regs, &regs, &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;
-}
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