2 * Copyright (c) 1993 Christopher G. Demetriou
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote
14 * products derived from this software without specific prior written
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
18 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * $FreeBSD: src/libexec/rpc.rwalld/rwalld.c,v 1.8 1999/08/28 00:09:57 peter Exp $
30 * $DragonFly: src/libexec/rpc.rwalld/rwalld.c,v 1.3 2003/11/14 03:54:31 dillon Exp $
41 #include <rpc/pmap_clnt.h>
42 #include <rpcsvc/rwall.h>
43 #include <sys/socket.h>
44 #include <sys/types.h>
49 #define WALL_CMD "/usr/sbin/wall"
51 #define WALL_CMD "/usr/bin/wall -n"
57 static void usage (void);
69 struct sockaddr_in sa;
73 if (argc == 2 && !strcmp(argv[1], "-n"))
75 if (argc != 1 && !nodaemon)
79 struct passwd *pep = getpwnam("nobody");
87 * See if inetd started us
90 if (getsockname(0, (struct sockaddr *)&sa, &salen) < 0) {
100 (void)pmap_unset(WALLPROG, WALLVERS);
101 if ((s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
103 bzero((char *)&sa, sizeof sa);
104 if (bind(s, (struct sockaddr *)&sa, sizeof sa) < 0)
108 if (getsockname(s, (struct sockaddr *)&sa, &salen))
109 err(1, "getsockname");
111 pmap_set(WALLPROG, WALLVERS, IPPROTO_UDP, ntohs(sa.sin_port));
114 (void)pmap_unset(WALLPROG, WALLVERS);
117 (void)signal(SIGCHLD, killkids);
119 openlog("rpc.rwalld", LOG_CONS|LOG_PID, LOG_DAEMON);
121 transp = svcudp_create(sock);
122 if (transp == NULL) {
123 syslog(LOG_ERR, "cannot create udp service");
126 if (!svc_register(transp, WALLPROG, WALLVERS, wallprog_1, proto)) {
127 syslog(LOG_ERR, "unable to register (WALLPROG, WALLVERS, %s)", proto?"udp":"(inetd)");
131 syslog(LOG_ERR, "svc_run returned");
138 fprintf(stderr, "usage: rpc.rwalld [-n]\n");
149 while(wait4(-1, NULL, WNOHANG, NULL) > 0)
153 void *wallproc_wall_1_svc(s, rqstp)
155 struct svc_req *rqstp;
157 static void *dummy = NULL;
159 /* fork, popen wall with special option, and send the message */
163 pfp = popen(WALL_CMD, "w");
165 fprintf(pfp, "\007\007%s", *s);
174 wallprog_1(rqstp, transp)
175 struct svc_req *rqstp;
179 char *wallproc_wall_1_arg;
182 bool_t (*xdr_argument)(), (*xdr_result)();
185 switch (rqstp->rq_proc) {
187 (void)svc_sendreply(transp, xdr_void, (char *)NULL);
191 xdr_argument = xdr_wrapstring;
192 xdr_result = xdr_void;
193 local = (char *(*)()) wallproc_wall_1_svc;
197 svcerr_noproc(transp);
200 bzero((char *)&argument, sizeof(argument));
201 if (!svc_getargs(transp, xdr_argument, (caddr_t)&argument)) {
202 svcerr_decode(transp);
205 result = (*local)(&argument, rqstp);
206 if (result != NULL && !svc_sendreply(transp, xdr_result, result)) {
207 svcerr_systemerr(transp);
209 if (!svc_freeargs(transp, xdr_argument, (caddr_t)&argument)) {
210 syslog(LOG_ERR, "unable to free arguments");