1 /* $NetBSD: sprayd.c,v 1.18 2011/09/16 16:13:17 plunky 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 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include <sys/cdefs.h>
29 #ifndef lint
30 __RCSID("$NetBSD: sprayd.c,v 1.18 2011/09/16 16:13:17 plunky Exp $");
31 #endif /* not lint */
32
33 #include <stdio.h>
34 #include <signal.h>
35 #include <stdlib.h>
36 #include <unistd.h>
37 #include <syslog.h>
38 #include <sys/socket.h>
39 #include <sys/time.h>
40 #include <rpc/rpc.h>
41 #include <rpcsvc/spray.h>
42
43 __dead static void cleanup(int);
44 __dead static void die(int);
45 static void spray_service(struct svc_req *, SVCXPRT *);
46
47 static int from_inetd = 1;
48
49 #define TIMEOUT 120
50
51 static void
cleanup(int n)52 cleanup(int n)
53 {
54
55 (void)rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
56 exit(0);
57 }
58
59 static void
die(int n)60 die(int n)
61 {
62
63 exit(0);
64 }
65
66 int
main(int argc,char * argv[])67 main(int argc, char *argv[])
68 {
69 SVCXPRT *transp;
70 struct sockaddr_storage from;
71 socklen_t fromlen;
72
73 /*
74 * See if inetd started us
75 */
76 fromlen = sizeof(from);
77 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0)
78 from_inetd = 0;
79
80 if (!from_inetd) {
81 daemon(0, 0);
82
83 (void)rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
84
85 (void)signal(SIGINT, cleanup);
86 (void)signal(SIGTERM, cleanup);
87 (void)signal(SIGHUP, cleanup);
88 } else {
89 (void)signal(SIGALRM, die);
90 alarm(TIMEOUT);
91 }
92
93 openlog("rpc.sprayd", LOG_PID, LOG_DAEMON);
94
95 if (from_inetd) {
96 transp = svc_dg_create(0, 0, 0);
97 if (transp == NULL) {
98 syslog(LOG_ERR, "cannot create udp service.");
99 exit(1);
100 }
101 if (!svc_reg(transp, SPRAYPROG, SPRAYVERS, spray_service,
102 NULL)) {
103 syslog(LOG_ERR,
104 "unable to register (SPRAYPROG, SPRAYVERS).");
105 exit(1);
106 }
107 } else {
108 if (!svc_create(spray_service, SPRAYPROG, SPRAYVERS, "udp")) {
109 syslog(LOG_ERR,
110 "unable to register (SPRAYPROG, SPRAYVERS).");
111 exit(1);
112 }
113 }
114
115 svc_run();
116 syslog(LOG_ERR, "svc_run returned");
117 exit(1);
118 }
119
120
121 static void
spray_service(struct svc_req * rqstp,SVCXPRT * transp)122 spray_service(struct svc_req *rqstp, SVCXPRT *transp)
123 {
124 static spraycumul scum;
125 static struct timeval clear, get;
126
127 switch (rqstp->rq_proc) {
128 case SPRAYPROC_CLEAR:
129 scum.counter = 0;
130 (void)gettimeofday(&clear, 0);
131 /*FALLTHROUGH*/
132
133 case NULLPROC:
134 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
135 return;
136
137 case SPRAYPROC_SPRAY:
138 scum.counter++;
139 return;
140
141 case SPRAYPROC_GET:
142 (void)gettimeofday(&get, 0);
143 timersub(&get, &clear, &get);
144 scum.clock.sec = get.tv_sec;
145 scum.clock.usec = get.tv_usec;
146 break;
147
148 default:
149 svcerr_noproc(transp);
150 return;
151 }
152
153 if (!svc_sendreply(transp, (xdrproc_t)xdr_spraycumul, (caddr_t)&scum)) {
154 svcerr_systemerr(transp);
155 syslog(LOG_WARNING, "bad svc_sendreply");
156 }
157 }
158