mirror of https://github.com/GnoConsortium/gno.git
Initial commit of wall program
This commit is contained in:
taubert
parent
99bb125e6e
commit
d9b5117780
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@ -0,0 +1,11 @@
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# @(#)Makefile 8.1 (Berkeley) 6/6/93
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# $Id: Makefile,v 1.1 1998/02/11 08:48:38 taubert Exp $
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PROG= wall
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SRCS= wall.c ttymsg.c
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BINGRP= tty
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BINMODE=2555
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OPTIMIZE=79
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.INCLUDE: /src/gno/prog.mk
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@ -0,0 +1,189 @@
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/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 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
|
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* documentation and/or other materials provided with the distribution.
|
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* 3. All advertising materials mentioning features or use of this software
|
||||
* must display the following acknowledgement:
|
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* This product includes software developed by the University of
|
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
|
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)ttymsg.c 8.2 (Berkeley) 11/16/93";
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/uio.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <errno.h>
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#include <paths.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#ifdef __GNO__
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#undef _PATH_DEV
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#define _PATH_DEV "."
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#endif
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/*
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* Display the contents of a uio structure on a terminal. Used by wall(1),
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* syslogd(8), and talkd(8). Forks and finishes in child if write would block,
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* waiting up to tmout seconds. Returns pointer to error string on unexpected
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* error; string is not newline-terminated. Various "normal" errors are
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* ignored (exclusive-use, lack of permission, etc.).
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*/
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char *
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ttymsg(struct iovec *iov, int iovcnt, char *line, int tmout)
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{
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static char device[MAXNAMLEN] = _PATH_DEV;
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static char errbuf[1024];
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register int cnt, fd, left, wret;
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struct iovec localiov[6];
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int forked = 0;
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if (iovcnt > sizeof(localiov) / sizeof(localiov[0]))
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return ("too many iov's (change code in wall/ttymsg.c)");
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if (!strncmp(line, _PATH_DEV, strlen(_PATH_DEV)))
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(void) strcpy(device, line);
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else
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(void) strcpy(device + sizeof(_PATH_DEV) - 1, line);
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if (strchr(device + sizeof(_PATH_DEV) - 1, '/')) {
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/* A slash is an attempt to break security... */
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(void) snprintf(errbuf, sizeof(errbuf), "'/' in \"%s\"",
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device);
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return (errbuf);
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}
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/*
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* open will fail on slip lines or exclusive-use lines
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* if not running as root; not an error.
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*/
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#ifdef __GNO__
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if ((fd = open(device, O_WRONLY)) < 0) {
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if (errno == EACCES)
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#else
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if ((fd = open(device, O_WRONLY|O_NONBLOCK, 0)) < 0) {
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if (errno == EBUSY || errno == EACCES)
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#endif
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return (NULL);
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(void) snprintf(errbuf, sizeof(errbuf),
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"%s: %s", device, strerror(errno));
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return (errbuf);
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}
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for (cnt = left = 0; cnt < iovcnt; ++cnt)
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left += iov[cnt].iov_len;
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for (;;) {
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wret = writev(fd, iov, iovcnt);
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if (wret >= left)
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break;
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if (wret >= 0) {
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left -= wret;
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if (iov != localiov) {
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bcopy(iov, localiov,
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iovcnt * sizeof(struct iovec));
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iov = localiov;
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}
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for (cnt = 0; wret >= iov->iov_len; ++cnt) {
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wret -= iov->iov_len;
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++iov;
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--iovcnt;
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}
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if (wret) {
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iov->iov_base += wret;
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iov->iov_len -= wret;
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}
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continue;
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}
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#ifndef __GNO__
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if (errno == EWOULDBLOCK) {
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int cpid, off = 0;
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if (forked) {
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(void) close(fd);
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_exit(1);
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}
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cpid = fork();
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if (cpid < 0) {
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(void) snprintf(errbuf, sizeof(errbuf),
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"fork: %s", strerror(errno));
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(void) close(fd);
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return (errbuf);
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}
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if (cpid) { /* parent */
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(void) close(fd);
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return (NULL);
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}
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forked++;
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/* wait at most tmout seconds */
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(void) signal(SIGALRM, SIG_DFL);
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(void) signal(SIGTERM, SIG_DFL); /* XXX */
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(void) sigsetmask(0);
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(void) alarm((u_int)tmout);
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(void) fcntl(fd, O_NONBLOCK, &off);
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continue;
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}
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#endif
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/*
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* We get ENODEV on a slip line if we're running as root,
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* and EIO if the line just went away.
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*/
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if (errno == ENODEV || errno == EIO)
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break;
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(void) close(fd);
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if (forked)
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_exit(1);
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(void) snprintf(errbuf, sizeof(errbuf),
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"%s: %s", device, strerror(errno));
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return (errbuf);
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}
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(void) close(fd);
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if (forked)
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_exit(0);
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return (NULL);
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}
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#ifdef __GNO__
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static size_t writev(int fd, struct iovec *iov, int iovcnt)
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{
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int i;
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size_t size, total_size = 0;
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for (i=0; i<iovcnt; i++) {
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size = write(fd, iov[i].iov_base, iov[i].iov_len);
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total_size += size;
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if (size != iov[i].iov_len) break;
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}
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return total_size;
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}
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#endif
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@ -0,0 +1,63 @@
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.\" Copyright (c) 1989, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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||||
.\" 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
|
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.\" 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
|
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.\" California, Berkeley and its contributors.
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.\" 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.
|
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
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.\" 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
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)wall.1 8.1 (Berkeley) 6/6/93
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.\"
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.Dd June 6, 1993
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.Dt WALL 1
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.Os BSD 4
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.Sh NAME
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.Nm wall
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.Nd write a message to users
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.Sh SYNOPSIS
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.Nm wall
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.Op Ar file
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.Sh DESCRIPTION
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.Nm Wall
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displays the contents of
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.Ar file
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or, by default, its standard input, on the terminals of all
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currently logged in users.
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.Pp
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Only the super-user can write on the
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terminals of users who have chosen
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to deny messages or are using a program which
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automatically denies messages.
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.Sh SEE ALSO
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.Xr mesg 1 ,
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.Xr talk 1 ,
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.Xr write 1 ,
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.Xr shutdown 8
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.Sh HISTORY
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A
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.Nm
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command appeared in
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.At v7 .
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@ -0,0 +1,210 @@
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/*
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* Copyright (c) 1988, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* 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.
|
||||
*
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||||
* 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
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char copyright[] =
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"@(#) Copyright (c) 1988, 1990, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)wall.c 8.2 (Berkeley) 11/16/93";
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#endif /* not lint */
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/*
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* This program is not related to David Wall, whose Stanford Ph.D. thesis
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* is entitled "Mechanisms for Broadcast and Selective Broadcast".
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*/
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <sys/time.h>
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#include <sys/uio.h>
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#include <paths.h>
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#include <pwd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <utmp.h>
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#ifdef __GNO__
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#include <ctype.h>
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#endif
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void makemsg __P((char *));
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#define IGNOREUSER "sleeper"
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int nobanner;
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int mbufsize;
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char *mbuf;
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/* ARGSUSED */
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int
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main(int argc, char **argv)
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{
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extern int optind;
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int ch;
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struct iovec iov;
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struct utmp utmp;
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FILE *fp;
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char *p, *ttymsg(struct iovec *, int, char *, int);
|
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static char line[sizeof(utmp.ut_line) + 1];
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while ((ch = getopt(argc, argv, "n")) != EOF)
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switch (ch) {
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case 'n':
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/* undoc option for shutdown: suppress banner */
|
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if (geteuid() == 0)
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nobanner = 1;
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break;
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case '?':
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default:
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usage:
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(void)fprintf(stderr, "usage: wall [file]\n");
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exit(1);
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}
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argc -= optind;
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argv += optind;
|
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if (argc > 1)
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||||
goto usage;
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||||
|
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makemsg(*argv);
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||||
|
||||
if (!(fp = fopen(_PATH_UTMP, "rb"))) {
|
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(void)fprintf(stderr, "wall: cannot read %s.\n", _PATH_UTMP);
|
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exit(1);
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||||
}
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iov.iov_base = mbuf;
|
||||
iov.iov_len = mbufsize;
|
||||
/* NOSTRICT */
|
||||
while (fread((char *)&utmp, sizeof(utmp), 1, fp) == 1) {
|
||||
if (!utmp.ut_name[0] ||
|
||||
!strncmp(utmp.ut_name, IGNOREUSER, sizeof(utmp.ut_name)))
|
||||
continue;
|
||||
strncpy(line, utmp.ut_line, sizeof(utmp.ut_line));
|
||||
line[sizeof(utmp.ut_line)] = '\0';
|
||||
if ((p = ttymsg(&iov, 1, line, 60*5)) != NULL)
|
||||
(void)fprintf(stderr, "wall: %s\n", p);
|
||||
}
|
||||
exit(0);
|
||||
}
|
||||
|
||||
void
|
||||
makemsg(char *fname)
|
||||
{
|
||||
register int ch, cnt;
|
||||
struct tm *lt;
|
||||
struct passwd *pw;
|
||||
struct stat sbuf;
|
||||
time_t now;
|
||||
FILE *fp;
|
||||
int fd;
|
||||
char *p, *whom;
|
||||
static char hostname[MAXHOSTNAMELEN];
|
||||
static char lbuf[100];
|
||||
char tmpname[20];
|
||||
|
||||
(void)strcpy(tmpname, _PATH_TMP);
|
||||
(void)strcat(tmpname, "wall.XXXXXX");
|
||||
if (!(fd = mkstemp(tmpname)) || !(fp = fdopen(fd, "rb+"))) {
|
||||
(void)fprintf(stderr, "wall: can't open temporary file.\n");
|
||||
exit(1);
|
||||
}
|
||||
(void)unlink(tmpname);
|
||||
|
||||
if (!nobanner) {
|
||||
#ifndef __GNO__
|
||||
if (!(whom = getlogin()))
|
||||
#endif
|
||||
whom = (pw = getpwuid(getuid())) ? pw->pw_name : "???";
|
||||
(void)gethostname(hostname, sizeof(hostname));
|
||||
(void)time(&now);
|
||||
lt = localtime(&now);
|
||||
|
||||
/*
|
||||
* all this stuff is to blank out a square for the message;
|
||||
* we wrap message lines at column 79, not 80, because some
|
||||
* terminals wrap after 79, some do not, and we can't tell.
|
||||
* Which means that we may leave a non-blank character
|
||||
* in column 80, but that can't be helped.
|
||||
*/
|
||||
(void)fprintf(fp, "\r%79s\r\n", " ");
|
||||
(void)sprintf(lbuf, "Broadcast Message from %s@%s",
|
||||
whom, hostname);
|
||||
(void)fprintf(fp, "%-79.79s\007\007\r\n", lbuf);
|
||||
(void)sprintf(lbuf, " (%s) at %d:%02d ...", ttyname(2),
|
||||
lt->tm_hour, lt->tm_min);
|
||||
(void)fprintf(fp, "%-79.79s\r\n", lbuf);
|
||||
}
|
||||
(void)fprintf(fp, "%79s\r\n", " ");
|
||||
|
||||
if (fname && !(freopen(fname, "r", stdin))) {
|
||||
(void)fprintf(stderr, "wall: can't read %s.\n", fname);
|
||||
exit(1);
|
||||
}
|
||||
while (fgets(lbuf, sizeof(lbuf), stdin))
|
||||
for (cnt = 0, p = lbuf; (ch = *p) != '\0'; ++p, ++cnt) {
|
||||
if (cnt == 79 || ch == '\n') {
|
||||
for (; cnt < 79; ++cnt)
|
||||
putc(' ', fp);
|
||||
putc('\r', fp);
|
||||
putc('\n', fp);
|
||||
cnt = 0;
|
||||
} else if (!isprint(ch) && !isspace(ch) && ch != '\007')
|
||||
{
|
||||
putc('^', fp);
|
||||
putc(ch^0x40, fp); /* DEL to ?, others to a
|
||||
lpha */
|
||||
} else
|
||||
putc(ch, fp);
|
||||
}
|
||||
(void)fprintf(fp, "%79s\r\n", " ");
|
||||
rewind(fp);
|
||||
|
||||
if (fstat(fd, &sbuf)) {
|
||||
(void)fprintf(stderr, "wall: can't stat temporary file.\n");
|
||||
exit(1);
|
||||
}
|
||||
mbufsize = sbuf.st_size;
|
||||
if (!(mbuf = malloc((u_int)mbufsize))) {
|
||||
(void)fprintf(stderr, "wall: out of memory.\n");
|
||||
exit(1);
|
||||
}
|
||||
if (fread(mbuf, sizeof(*mbuf), mbufsize, fp) != mbufsize) {
|
||||
(void)fprintf(stderr, "wall: can't read temporary file.\n");
|
||||
exit(1);
|
||||
}
|
||||
(void)close(fd);
|
||||
}
|
||||
|
|
@ -0,0 +1,9 @@
|
|||
Name: wall
|
||||
Version: 1.0 (January 1998)
|
||||
Shell: GNO
|
||||
Author: Derek Taubert (from FreeBSD 2.1.0 code)
|
||||
Contact: taubert@geeks.org
|
||||
Where: /usr/bin
|
||||
FTP: ground.isca.uiowa.edu apple2.caltech.edu trenco.myrias.com
|
||||
|
||||
Write to all users.
|
||||
|
|
@ -0,0 +1,31 @@
|
|||
/*
|
||||
* Resources for wall version and comment
|
||||
*
|
||||
* $Id: wall.rez,v 1.1 1998/02/11 08:48:44 taubert Exp $
|
||||
*/
|
||||
#define PROG "wall"
|
||||
#define DESC "Write to all users."
|
||||
|
||||
#include "Types.rez"
|
||||
|
||||
/*
|
||||
* Version
|
||||
*/
|
||||
resource rVersion (1, purgeable3) {
|
||||
{ 1, 0, 0, /* Version 1.0.0 */
|
||||
release, /* development|alpha|beta|final|release */
|
||||
0 }, /* non-final release number */
|
||||
verUS, /* Country */
|
||||
PROG, /* Program name */
|
||||
DESC " Released with GNO/ME."
|
||||
};
|
||||
|
||||
|
||||
/*
|
||||
* Comment
|
||||
*/
|
||||
resource rComment (1, purgeable3) {
|
||||
PROG " v1.0 (January 1998)\n"
|
||||
"GNO utility: " DESC "\n"
|
||||
"Ported from FreeBSD 2.1.0 code by Derek Taubert."
|
||||
};
|
||||
Loading…
Reference in New Issue