/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2005 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ /* All Rights Reserved */ /* * University Copyright- Copyright (c) 1982, 1986, 1988 * The Regents of the University of California * All Rights Reserved * * University Acknowledgment- Portions of this document are derived from * software developed by the University of California, Berkeley, and its * contributors. */ #pragma ident "%Z%%M% %I% %E% SMI" /* * this file contains the I/O handling and the exchange of * edit characters. This connection itself is established in ctl.c */ #include "talk.h" #include <stdio.h> #include <errno.h> #include <sys/time.h> #include <sys/filio.h> #include <libintl.h> #define A_LONG_TIME 10000000 #define STDIN_MASK (1<<fileno(stdin)) /* the bit mask for standard input */ /* * The routine to do the actual talking */ void talk() { int read_template, sockt_mask; int read_set, nb; char buf[BUFSIZ]; struct timeval wait; message(gettext("Connection established")); beep(); beep(); beep(); current_line = 0; sockt_mask = (1<<sockt); /* * wait on both the other process (sockt_mask) and * standard input ( STDIN_MASK ) */ read_template = sockt_mask | STDIN_MASK; forever { read_set = read_template; wait.tv_sec = A_LONG_TIME; wait.tv_usec = 0; nb = select(32, (fd_set *)&read_set, 0, 0, &wait); if (nb <= 0) { /* We may be returning from an interrupt handler */ if (errno == EINTR) { read_set = read_template; continue; } else { /* panic, we don't know what happened */ p_error( gettext("Unexpected error from select")); quit(); } } if (read_set & sockt_mask) { /* There is data on sockt */ nb = read(sockt, buf, sizeof (buf)); if (nb <= 0) { message(gettext("Connection closed. Exiting")); pause(); /* wait for Ctrl-C */ quit(); } else { display(&rem_win, buf, nb); } } if (read_set & STDIN_MASK) { /* * we can't make the tty non_blocking, because * curses's output routines would screw up */ ioctl(0, FIONREAD, (struct sgttyb *)&nb); nb = read(0, buf, nb); display(&my_win, buf, nb); write(sockt, buf, nb); /* * We might lose data here because sockt is * non-blocking */ } } } /* * p_error prints the system error message on the standard location * on the screen and then exits. (i.e. a curses version of perror) */ void p_error(char *string) { wmove(my_win.x_win, current_line%my_win.x_nlines, 0); wprintw(my_win.x_win, "[%s : %s]\n", string, strerror(errno)); wrefresh(my_win.x_win); move(LINES-1, 0); refresh(); quit(); } /* display string in the standard location */ void message(char *string) { wmove(my_win.x_win, current_line%my_win.x_nlines, 0); wprintw(my_win.x_win, "[%s]\n", string); wrefresh(my_win.x_win); }