1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 1994 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 41*0Sstevel@tonic-gate 42*0Sstevel@tonic-gate /* 43*0Sstevel@tonic-gate * this file contains the I/O handling and the exchange of 44*0Sstevel@tonic-gate * edit characters. This connection itself is established in ctl.c 45*0Sstevel@tonic-gate */ 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #include "talk.h" 48*0Sstevel@tonic-gate #include <stdio.h> 49*0Sstevel@tonic-gate #include <errno.h> 50*0Sstevel@tonic-gate #include <sys/time.h> 51*0Sstevel@tonic-gate #include <sys/filio.h> 52*0Sstevel@tonic-gate #include <libintl.h> 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate #define A_LONG_TIME 10000000 55*0Sstevel@tonic-gate #define STDIN_MASK (1<<fileno(stdin)) /* the bit mask for standard input */ 56*0Sstevel@tonic-gate extern int errno; 57*0Sstevel@tonic-gate extern int sys_nerr; 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate 60*0Sstevel@tonic-gate /* 61*0Sstevel@tonic-gate * The routine to do the actual talking 62*0Sstevel@tonic-gate */ 63*0Sstevel@tonic-gate 64*0Sstevel@tonic-gate void 65*0Sstevel@tonic-gate talk() 66*0Sstevel@tonic-gate { 67*0Sstevel@tonic-gate register int read_template, sockt_mask; 68*0Sstevel@tonic-gate int read_set, nb; 69*0Sstevel@tonic-gate char buf[BUFSIZ]; 70*0Sstevel@tonic-gate struct timeval wait; 71*0Sstevel@tonic-gate 72*0Sstevel@tonic-gate message(gettext("Connection established")); 73*0Sstevel@tonic-gate beep(); beep(); beep(); 74*0Sstevel@tonic-gate current_line = 0; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate sockt_mask = (1<<sockt); 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate /* 79*0Sstevel@tonic-gate * wait on both the other process (sockt_mask) and 80*0Sstevel@tonic-gate * standard input ( STDIN_MASK ) 81*0Sstevel@tonic-gate */ 82*0Sstevel@tonic-gate 83*0Sstevel@tonic-gate read_template = sockt_mask | STDIN_MASK; 84*0Sstevel@tonic-gate 85*0Sstevel@tonic-gate forever { 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate read_set = read_template; 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate wait.tv_sec = A_LONG_TIME; 90*0Sstevel@tonic-gate wait.tv_usec = 0; 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate nb = select(32, (fd_set *)&read_set, 0, 0, &wait); 93*0Sstevel@tonic-gate 94*0Sstevel@tonic-gate if (nb <= 0) { 95*0Sstevel@tonic-gate 96*0Sstevel@tonic-gate /* We may be returning from an interrupt handler */ 97*0Sstevel@tonic-gate 98*0Sstevel@tonic-gate if (errno == EINTR) { 99*0Sstevel@tonic-gate read_set = read_template; 100*0Sstevel@tonic-gate continue; 101*0Sstevel@tonic-gate } else { 102*0Sstevel@tonic-gate /* panic, we don't know what happened */ 103*0Sstevel@tonic-gate p_error( 104*0Sstevel@tonic-gate gettext("Unexpected error from select")); 105*0Sstevel@tonic-gate quit(); 106*0Sstevel@tonic-gate } 107*0Sstevel@tonic-gate } 108*0Sstevel@tonic-gate 109*0Sstevel@tonic-gate if (read_set & sockt_mask) { 110*0Sstevel@tonic-gate 111*0Sstevel@tonic-gate /* There is data on sockt */ 112*0Sstevel@tonic-gate nb = read(sockt, buf, sizeof (buf)); 113*0Sstevel@tonic-gate 114*0Sstevel@tonic-gate if (nb <= 0) { 115*0Sstevel@tonic-gate message(gettext("Connection closed. Exiting")); 116*0Sstevel@tonic-gate pause(); /* wait for Ctrl-C */ 117*0Sstevel@tonic-gate quit(); 118*0Sstevel@tonic-gate } else { 119*0Sstevel@tonic-gate display(&rem_win, buf, nb); 120*0Sstevel@tonic-gate } 121*0Sstevel@tonic-gate } 122*0Sstevel@tonic-gate 123*0Sstevel@tonic-gate if (read_set & STDIN_MASK) { 124*0Sstevel@tonic-gate 125*0Sstevel@tonic-gate /* 126*0Sstevel@tonic-gate * we can't make the tty non_blocking, because 127*0Sstevel@tonic-gate * curses's output routines would screw up 128*0Sstevel@tonic-gate */ 129*0Sstevel@tonic-gate 130*0Sstevel@tonic-gate ioctl(0, FIONREAD, (struct sgttyb *)&nb); 131*0Sstevel@tonic-gate nb = read(0, buf, nb); 132*0Sstevel@tonic-gate display(&my_win, buf, nb); 133*0Sstevel@tonic-gate write(sockt, buf, nb); 134*0Sstevel@tonic-gate 135*0Sstevel@tonic-gate /* We might lose data here because sockt is non-blocking */ 136*0Sstevel@tonic-gate 137*0Sstevel@tonic-gate } 138*0Sstevel@tonic-gate } 139*0Sstevel@tonic-gate } 140*0Sstevel@tonic-gate 141*0Sstevel@tonic-gate 142*0Sstevel@tonic-gate /* 143*0Sstevel@tonic-gate * p_error prints the system error message on the standard location 144*0Sstevel@tonic-gate * on the screen and then exits. (i.e. a curses version of perror) 145*0Sstevel@tonic-gate */ 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate void 148*0Sstevel@tonic-gate p_error(string) 149*0Sstevel@tonic-gate char *string; 150*0Sstevel@tonic-gate { 151*0Sstevel@tonic-gate char *sys; 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate if (errno < sys_nerr) { 154*0Sstevel@tonic-gate sys = strerror(errno); 155*0Sstevel@tonic-gate } else { 156*0Sstevel@tonic-gate sys = gettext("Unknown error"); 157*0Sstevel@tonic-gate } 158*0Sstevel@tonic-gate 159*0Sstevel@tonic-gate wmove(my_win.x_win, current_line%my_win.x_nlines, 0); 160*0Sstevel@tonic-gate wprintw(my_win.x_win, "[%s : %s (%d)]\n", string, sys, errno); 161*0Sstevel@tonic-gate wrefresh(my_win.x_win); 162*0Sstevel@tonic-gate move(LINES-1, 0); 163*0Sstevel@tonic-gate refresh(); 164*0Sstevel@tonic-gate quit(); 165*0Sstevel@tonic-gate } 166*0Sstevel@tonic-gate 167*0Sstevel@tonic-gate /* display string in the standard location */ 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate void 170*0Sstevel@tonic-gate message(string) 171*0Sstevel@tonic-gate char *string; 172*0Sstevel@tonic-gate { 173*0Sstevel@tonic-gate wmove(my_win.x_win, current_line%my_win.x_nlines, 0); 174*0Sstevel@tonic-gate wprintw(my_win.x_win, "[%s]\n", string); 175*0Sstevel@tonic-gate wrefresh(my_win.x_win); 176*0Sstevel@tonic-gate } 177