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