1 /* $NetBSD: sprayd.c,v 1.14 2006/05/09 20:18:07 mrg Exp $ */
2
3 /*
4 * Copyright (c) 1994 Christos Zoulas
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 * must display the following acknowledgement:
17 * This product includes software developed by Christos Zoulas.
18 * 4. The name of the author may not be used to endorse or promote products
19 * derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #ifndef lint
34 static const char rcsid[] =
35 "$FreeBSD$";
36 #endif /* not lint */
37
38 #include <rpc/rpc.h>
39 #include <rpcsvc/spray.h>
40 #include <signal.h>
41 #include <stdio.h>
42 #include <stdlib.h>
43 #include <sys/time.h>
44 #include <sys/socket.h>
45 #include <syslog.h>
46 #include <unistd.h>
47
48 static void spray_service(struct svc_req *, SVCXPRT *);
49
50 static int from_inetd = 1;
51
52 #define timersub(tvp, uvp, vvp) \
53 do { \
54 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
55 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
56 if ((vvp)->tv_usec < 0) { \
57 (vvp)->tv_sec--; \
58 (vvp)->tv_usec += 1000000; \
59 } \
60 } while (0)
61
62 #define TIMEOUT 120
63
64 static void
cleanup(int sig __unused)65 cleanup(int sig __unused)
66 {
67 (void)rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
68 exit(0);
69 }
70
71 static void
die(int sig __unused)72 die(int sig __unused)
73 {
74 exit(0);
75 }
76
77 int
main(int argc __unused,char * argv[]__unused)78 main(int argc __unused, char *argv[] __unused)
79 {
80 SVCXPRT *transp;
81 int ok;
82 struct sockaddr_storage from;
83 socklen_t fromlen;
84
85 /*
86 * See if inetd started us
87 */
88 fromlen = sizeof(from);
89 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
90 from_inetd = 0;
91 }
92
93 if (!from_inetd) {
94 daemon(0, 0);
95
96 (void)rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
97
98 (void)signal(SIGINT, cleanup);
99 (void)signal(SIGTERM, cleanup);
100 (void)signal(SIGHUP, cleanup);
101 } else {
102 (void)signal(SIGALRM, die);
103 alarm(TIMEOUT);
104 }
105
106 openlog("rpc.sprayd", LOG_PID, LOG_DAEMON);
107
108 if (from_inetd) {
109 transp = svc_tli_create(0, NULL, NULL, 0, 0);
110 if (transp == NULL) {
111 syslog(LOG_ERR, "cannot create udp service.");
112 exit(1);
113 }
114 ok = svc_reg(transp, SPRAYPROG, SPRAYVERS,
115 spray_service, NULL);
116 } else
117 ok = svc_create(spray_service,
118 SPRAYPROG, SPRAYVERS, "udp");
119 if (!ok) {
120 syslog(LOG_ERR,
121 "unable to register (SPRAYPROG, SPRAYVERS, %s)",
122 (!from_inetd)?"udp":"(inetd)");
123 exit(1);
124 }
125
126 svc_run();
127 syslog(LOG_ERR, "svc_run returned");
128 return 1;
129 }
130
131
132 static void
spray_service(struct svc_req * rqstp,SVCXPRT * transp)133 spray_service(struct svc_req *rqstp, SVCXPRT *transp)
134 {
135 static spraycumul scum;
136 static struct timeval clear, get;
137
138 switch (rqstp->rq_proc) {
139 case SPRAYPROC_CLEAR:
140 scum.counter = 0;
141 (void)gettimeofday(&clear, 0);
142 /*FALLTHROUGH*/
143
144 case NULLPROC:
145 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
146 return;
147
148 case SPRAYPROC_SPRAY:
149 scum.counter++;
150 return;
151
152 case SPRAYPROC_GET:
153 (void)gettimeofday(&get, 0);
154 timersub(&get, &clear, &get);
155 scum.clock.sec = get.tv_sec;
156 scum.clock.usec = get.tv_usec;
157 break;
158
159 default:
160 svcerr_noproc(transp);
161 return;
162 }
163
164 if (!svc_sendreply(transp, (xdrproc_t)xdr_spraycumul, &scum)) {
165 svcerr_systemerr(transp);
166 syslog(LOG_WARNING, "bad svc_sendreply");
167 }
168 }
169