diff options
Diffstat (limited to 'usr.bin/rwall')
| -rw-r--r-- | usr.bin/rwall/Makefile | 8 | ||||
| -rw-r--r-- | usr.bin/rwall/rwall.1 | 77 | ||||
| -rw-r--r-- | usr.bin/rwall/rwall.c | 177 |
3 files changed, 262 insertions, 0 deletions
diff --git a/usr.bin/rwall/Makefile b/usr.bin/rwall/Makefile new file mode 100644 index 00000000000..7e4ce6d95e7 --- /dev/null +++ b/usr.bin/rwall/Makefile @@ -0,0 +1,8 @@ +# $Id: Makefile,v 1.1 1995/10/18 08:46:04 deraadt Exp $ + +PROG = rwall + +DPADD= ${LIBRPCSVC} +LDADD= -lrpcsvc + +.include <bsd.prog.mk> diff --git a/usr.bin/rwall/rwall.1 b/usr.bin/rwall/rwall.1 new file mode 100644 index 00000000000..286a31a3e5b --- /dev/null +++ b/usr.bin/rwall/rwall.1 @@ -0,0 +1,77 @@ +.\" Copyright (c) 1983, 1990 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. +.\" +.\" from: @(#)rwall.1 6.7 (Berkeley) 4/23/91 +.\" $Id: rwall.1,v 1.1 1995/10/18 08:46:04 deraadt Exp $ +.\" +.Dd April 23, 1991 +.Dt RWALL 1 +.Os BSD 4.2 +.Sh NAME +.Nm rwall +.Nd send a message to users logged on a host +.Sh SYNOPSIS +.Nm rwall +.Ar host +.Op Ar file +.Sh DESCRIPTION +The +.Nm rwall +command sends a message to the users logged into the specified host. The +message to be sent can be typed in and terminated with EOF or it can +be in a +.Ar file . +.Sh DIAGNOSTICS +.Bl -tag -width indent +.It rwall: RPC: Program not registered +The +.Xr rpc.rwalld 8 +daemon has not been started on the remote host. +.It rwall: RPC: Timed out +A communication error occurred. Either the network is +excessively congested, or the +.Xr rpc.rwalld 8 +daemon has terminated on the remote host. +.It rwall: RPC: Port mapper failure - RPC: Timed out +The remote host is not running the portmapper (see +.Xr portmap 8 ), +and cannot accommodate any RPC-based services. The host may be down. +.El +.Sh SEE ALSO +.Xr wall 1 , +.Xr portmap 8 , +.Xr rpc.rwalld 8 +.Sh HISTORY +The +.Nm rwall +command +appeared in +.Tn SunOS . diff --git a/usr.bin/rwall/rwall.c b/usr.bin/rwall/rwall.c new file mode 100644 index 00000000000..715ed8e338d --- /dev/null +++ b/usr.bin/rwall/rwall.c @@ -0,0 +1,177 @@ +/* + * Copyright (c) 1993 Christopher G. Demetriou + * Copyright (c) 1988, 1990 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 +char copyright[] = +"@(#) Copyright (c) 1988 Regents of the University of California.\n\ + All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +/*static char sccsid[] = "from: @(#)wall.c 5.14 (Berkeley) 3/2/91";*/ +static char rcsid[] = "$Id: rwall.c,v 1.1 1995/10/18 08:46:04 deraadt Exp $"; +#endif /* not lint */ + +/* + * This program is not related to David Wall, whose Stanford Ph.D. thesis + * is entitled "Mechanisms for Broadcast and Selective Broadcast". + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <time.h> +#include <sys/param.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <pwd.h> +#include <unistd.h> +#include <paths.h> + +#include <rpc/rpc.h> +#include <rpcsvc/rwall.h> + +struct timeval timeout = { 25, 0 }; +int mbufsize; +char *mbuf; + +void makemsg (); + +int +main(argc, argv) + int argc; + char **argv; +{ + char *wallhost, res; + CLIENT *cl; + + if ((argc < 2) || (argc > 3)) { + fprintf(stderr, "usage: %s hostname [file]\n", argv[0]); + exit(1); + } + + wallhost = argv[1]; + + makemsg(argv[2]); + + /* + * Create client "handle" used for calling MESSAGEPROG on the + * server designated on the command line. We tell the rpc package + * to use the "tcp" protocol when contacting the server. + */ + cl = clnt_create(wallhost, WALLPROG, WALLVERS, "udp"); + if (cl == NULL) { + /* + * Couldn't establish connection with server. + * Print error message and die. + */ + clnt_pcreateerror(wallhost); + exit(1); + } + + if (clnt_call(cl, WALLPROC_WALL, xdr_wrapstring, &mbuf, xdr_void, &res, timeout) != RPC_SUCCESS) { + /* + * An error occurred while calling the server. + * Print error message and die. + */ + clnt_perror(cl, wallhost); + exit(1); + } + + exit(0); +} + +void +makemsg(fname) + char *fname; +{ + struct tm *lt; + struct passwd *pw; + struct stat sbuf; + time_t now; + FILE *fp; + int fd; + char *whom, hostname[MAXHOSTNAMELEN], lbuf[100], tmpname[32]; + + (void)strcpy(tmpname, _PATH_TMP); + (void)strcat(tmpname, "/wall.XXXXXX"); + if (!(fd = mkstemp(tmpname)) || !(fp = fdopen(fd, "r+"))) { + (void)fprintf(stderr, "wall: can't open temporary file.\n"); + exit(1); + } + (void)unlink(tmpname); + + if (!(whom = getlogin())) + 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, "Remote Broadcast Message from %s@%s\n", + whom, hostname); + (void)fprintf(fp, " (%s) at %d:%02d ...\n", ttyname(2), + lt->tm_hour, lt->tm_min); + + putc('\n', fp); + + if (fname && !(freopen(fname, "r", stdin))) { + (void)fprintf(stderr, "wall: can't read %s.\n", fname); + exit(1); + } + while (fgets(lbuf, sizeof(lbuf), stdin)) + fputs(lbuf, fp); + 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); +} |