tnrecv.c

早期freebsd实现

/*-
 * Copyright (c) 1988, 1993
 *	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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
	The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)tnrecv.c	8.1 (Berkeley) 6/6/93";
#endif /* not lint */

#include <stdio.h>

#include <api/apilib.h>

#include "tncomp.h"


#include "../ctlr/api.h"
#include "../ctlr/function.h"
#include "../ctlr/hostctlr.h"
#include "../ctlr/oia.h"
#include "../ctlr/screen.h"

#include "../api/disp_asc.h"
#include "../api/astosc.h"

#include "../general/general.h"

ScreenImage Host[MAXSCREENSIZE];

static char
    a_send_sequence[SEND_SEQUENCE_LENGTH+1],
    a_ack_sequence[ACK_SEQUENCE_LENGTH+1],
    a_checksum[CHECKSUM_LENGTH+1],
    data_array[DATA_LENGTH+1];

static int
    verbose,
    blocks,
    enter_index,
    clear_index,
    ScreenSize,
    session_id;

static unsigned int
    send_sequence,
    ack_sequence = -1,
    checksum;

api_perror(string)
char *string;
{
    fprintf(stderr, "Error: [0x%x/0x%x:0x%x/0x%x] from %s.\n",
	api_sup_fcn_id, api_sup_errno,
	api_fcn_fcn_id, api_fcn_errno, string);
}


char *
session_type(type)
int	type;
{
    switch (type) {
    case TYPE_WSCTL:
	return "work station control";
    case TYPE_DFT:
	return "distributed function terminal";
    case TYPE_CUT:
	return "control unit terminal";
    case TYPE_NOTEPAD:
	return "notepad";
    case TYPE_PC:
	return "personal computer";
    default:
	return "(UNKNOWN)";
    }
}

static int
wait_for_ps_or_oia()
{
#if	defined(unix)
    return api_ps_or_oia_modified();
#endif	/* defined(unix) */
}


static int
wait_for_unlock()
{
    OIA oia;
    ReadOiaGroupParms re;
    static char zeroes[sizeof oia.input_inhibited] = { 0 };

    do {
	re.rc = re.function_id = 0;
	re.session_id = session_id;
	re.oia_buffer = (char far *) &oia;
	re.oia_group_number = API_OIA_ALL_GROUPS;
	if (api_read_oia_group(&re) == -1) {
	    api_perror("api_read_oia_group");
	    return -1;
	} else if (verbose) {
	    if (IsOiaReady3274(&oia)) {
		printf("3274 ready, ");
	    }
	    if (IsOiaMyJob(&oia)) {
		printf("my job, ");
	    }
	    if (IsOiaInsert(&oia)) {
		printf("insert mode, ");
	    }
	    if (IsOiaSystemLocked(&oia)) {
		printf("system locked, ");
	    }
	    if (IsOiaTWait(&oia)) {
		printf("terminal wait, ");
	    }
	    printf("are some bits from the OIA.\n");
	}
	/* We turned this on, so turn it off now */
	ResetOiaApiInhibit(&oia);
	if (memcmp(zeroes, oia.input_inhibited, sizeof oia.input_inhibited)) {
	    if (wait_for_ps_or_oia() == -1) {
		return -1;
	    }
	}
    } while (memcmp(zeroes, oia.input_inhibited, sizeof oia.input_inhibited));
    return 0;
}

static int
initialize()
{
    QuerySessionIdParms id;
    QuerySessionParametersParms pa;
    QuerySessionCursorParms cu;
    ConnectToKeyboardParms conn;
    DisableInputParms disable;
    NameArray namearray;

    if (api_init() == 0) {
	fprintf(stderr, "API function not available.\n");
	return -1;
    }

    id.rc = 0;
    id.function_id = 0;
    id.option_code = ID_OPTION_BY_NAME;
    id.data_code = 'E';
    id.name_array = &namearray;
    namearray.length = sizeof namearray;
    if (api_query_session_id(&id)) {
	api_perror("api_query_session_id");
    } else if (namearray.number_matching_session == 0) {
	fprintf(stderr, "query_session_id:  No matching sessions!\n");
	return -1;
    } else if (verbose) {
	printf("Session short name 0x%x, type is ",
				namearray.name_array_element.short_name);
	printf("%s", session_type(namearray.name_array_element.type));
	printf(", session ID is: 0x%x\n",
				namearray.name_array_element.session_id);
    }
    session_id = namearray.name_array_element.session_id;

    pa.rc = pa.function_id = 0;
    pa.session_id = session_id;
    if (api_query_session_parameters(&pa) == -1) {
	api_perror("api_query_session_parameters");
	return -1;
    } else if (verbose) {
	printf("Session type %s, ", session_type(pa.session_type));
	if (pa.session_characteristics&CHARACTERISTIC_EAB) {
	    printf(" has EAB, ");
	}
	if (pa.session_characteristics&CHARACTERISTIC_PSS) {
	    printf(" has PSS, ");
	}
	printf("%d rows, %d columns ", pa.rows, pa.columns);
	if (pa.presentation_space) {
	    printf("presentation space at 0x%x:0x%x.\n",
		FP_SEG(pa.presentation_space), FP_OFF(pa.presentation_space));
	} else {
	    printf("(no direct presentation space access).\n");
	}
    }
    ScreenSize = pa.rows*pa.columns;
    if (pa.session_characteristics&CHARACTERISTIC_EAB) {
	fprintf(stderr,
    "tncomp utilities not designed to work with extended attribute buffers.\n");
	return -1;
    }

    if (verbose) {
	cu.rc = cu.function_id = 0;
	cu.session_id = session_id;
	if (api_query_session_cursor(&cu) == -1) {
	    api_perror("api_query_session_cursor");
	} else {
	    printf("cursor");
	    if (cu.cursor_type&CURSOR_INHIBITED_AUTOSCROLL) {
		printf(" inhibited autoscroll");
	    }
	    if (cu.cursor_type&CURSOR_INHIBITED) {
		printf(" inhibited");
	    }
	    if (cu.cursor_type&CURSOR_BLINKING) {
		printf(" blinking");
	    } else {
		printf(" not blinking");
	    }
	    if (cu.cursor_type&CURSOR_BOX) {
		printf(" box ");
	    } else {
		printf(" not box ");
	    }
	    printf("at row %d, column %d.\n",
				cu.row_address, cu.column_address);
	}
    }

    conn.rc = conn.function_id = 0;
    conn.session_id = session_id;
    conn.event_queue_id = conn.input_queue_id = 0;
    conn.intercept_options = 0;
    if (api_connect_to_keyboard(&conn) == -1) {
	api_perror("api_connect_to_keyboard");
    } else if (verbose) {
	if (conn.first_connection_identifier) {
	    printf("First keyboard connection.\n");
	} else {
	    printf("Not first keyboard connection.\n");
	}
    }

    disable.rc = disable.function_id = 0;
    disable.session_id = session_id;
    disable.connectors_task_id = 0;
    if (api_disable_input(&disable) == -1) {
	api_perror("api_disable_input");
	return -1;
    } else if (verbose) {
	printf("Disabled.\n");
    }

    if ((enter_index = ascii_to_index("ENTER")) == -1) {
	return -1;
    }
    if ((clear_index = ascii_to_index("CLEAR")) == -1) {
	return -1;
    }

    return 0;				/* all ok */
}

static int
send_key(index)
int	index;
{
    WriteKeystrokeParms wr;
    extern struct astosc astosc[];

    wait_for_unlock();

    wr.rc = wr.function_id = 0;
    wr.session_id = session_id;
    wr.connectors_task_id = 0;
    wr.options = OPTION_SINGLE_KEYSTROKE;
    wr.number_of_keys_sent = 0;
    wr.keystroke_specifier.keystroke_entry.scancode = astosc[index].scancode;
    wr.keystroke_specifier.keystroke_entry.shift_state
						= astosc[index].shiftstate;
    if (api_write_keystroke(&wr) == -1) {
	api_perror("api_write_keystroke");
	return -1;
    } else if (wr.number_of_keys_sent != 1) {
	fprintf(stderr, "write_keystroke claims to have sent %d keystrokes.\n",
		    wr.number_of_keys_sent);
	return -1;
    } else if (verbose) {
	printf("Keystroke sent.\n");
    }
    if (wait_for_ps_or_oia() == -1) {
	return -1;
    }
    return 0;
}

static int
terminate()
{
    EnableInputParms enable;
    DisconnectFromKeyboardParms disc;

    enable.rc = enable.function_id = 0;
    enable.session_id = session_id;
    enable.connectors_task_id = 0;
    if (api_enable_input(&enable) == -1) {
	api_perror("api_enable");
	return -1;
    } else if (verbose) {
	printf("Enabled.\n");
    }