Ansify some function definitions that were previously overlooked.
[dragonfly.git] / libexec / rpc.sprayd / sprayd.c
1 /*
2  * Copyright (c) 1994 Christos Zoulas
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
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. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *      This product includes software developed by Christos Zoulas.
16  * 4. The name of the author may not be used to endorse or promote products
17  *    derived from this software without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  *
30  * $FreeBSD: src/libexec/rpc.sprayd/sprayd.c,v 1.5 1999/08/28 00:09:59 peter Exp $
31  */
32
33 #include <rpc/rpc.h>
34 #include <rpc/pmap_clnt.h>
35 #include <rpcsvc/spray.h>
36 #include <signal.h>
37 #include <stdio.h>
38 #include <stdlib.h>
39 #include <sys/time.h>
40 #include <sys/socket.h>
41 #include <syslog.h>
42 #include <unistd.h>
43
44 static void spray_service (struct svc_req *, SVCXPRT *);
45
46 static int from_inetd = 1;
47
48 #define timersub(tvp, uvp, vvp)                                         \
49         do {                                                            \
50                 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
51                 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
52                 if ((vvp)->tv_usec < 0) {                               \
53                         (vvp)->tv_sec--;                                \
54                         (vvp)->tv_usec += 1000000;                      \
55                 }                                                       \
56         } while (0)
57
58 #define TIMEOUT 120
59
60 void
61 cleanup(int sig)
62 {
63         (void) pmap_unset(SPRAYPROG, SPRAYVERS);
64         exit(0);
65 }
66
67 void
68 die(int sig)
69 {
70         exit(0);
71 }
72
73 int
74 main(int argc, char *argv[])
75 {
76         SVCXPRT *transp;
77         int sock = 0;
78         int proto = 0;
79         struct sockaddr_in from;
80         int fromlen;
81
82         /*
83          * See if inetd started us
84          */
85         fromlen = sizeof(from);
86         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
87                 from_inetd = 0;
88                 sock = RPC_ANYSOCK;
89                 proto = IPPROTO_UDP;
90         }
91
92         if (!from_inetd) {
93                 daemon(0, 0);
94
95                 (void) pmap_unset(SPRAYPROG, SPRAYVERS);
96
97                 (void) signal(SIGINT, cleanup);
98                 (void) signal(SIGTERM, cleanup);
99                 (void) signal(SIGHUP, cleanup);
100         } else {
101                 (void) signal(SIGALRM, die);
102                 alarm(TIMEOUT);
103         }
104
105         openlog("rpc.sprayd", LOG_CONS|LOG_PID, LOG_DAEMON);
106
107         transp = svcudp_create(sock);
108         if (transp == NULL) {
109                 syslog(LOG_ERR, "cannot create udp service");
110                 return 1;
111         }
112         if (!svc_register(transp, SPRAYPROG, SPRAYVERS, spray_service, proto)) {
113                 syslog(LOG_ERR,
114                     "unable to register (SPRAYPROG, SPRAYVERS, %s)",
115                     proto ? "udp" : "(inetd)");
116                 return 1;
117         }
118
119         svc_run();
120         syslog(LOG_ERR, "svc_run returned");
121         return 1;
122 }
123
124
125 static void
126 spray_service(struct svc_req *rqstp, SVCXPRT *transp)
127 {
128         static spraycumul scum;
129         static struct timeval clear, get;
130
131         switch (rqstp->rq_proc) {
132         case SPRAYPROC_CLEAR:
133                 scum.counter = 0;
134                 (void) gettimeofday(&clear, 0);
135                 /*FALLTHROUGH*/
136
137         case NULLPROC:
138                 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
139                 return;
140
141         case SPRAYPROC_SPRAY:
142                 scum.counter++;
143                 return;
144
145         case SPRAYPROC_GET:
146                 (void) gettimeofday(&get, 0);
147                 timersub(&get, &clear, &get);
148                 scum.clock.sec = get.tv_sec;
149                 scum.clock.usec = get.tv_usec;
150                 break;
151
152         default:
153                 svcerr_noproc(transp);
154                 return;
155         }
156
157         if (!svc_sendreply(transp, (xdrproc_t)xdr_spraycumul, &scum)) {
158                 svcerr_systemerr(transp);
159                 syslog(LOG_ERR, "bad svc_sendreply");
160         }
161 }