dsynth - Work on count mismatch issues, fix binary pkg deletion
[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 <rpcsvc/spray.h>
35 #include <signal.h>
36 #include <stdio.h>
37 #include <stdlib.h>
38 #include <sys/time.h>
39 #include <sys/socket.h>
40 #include <syslog.h>
41 #include <unistd.h>
42
43 static void spray_service (struct svc_req *, SVCXPRT *);
44
45 static int from_inetd = 1;
46
47 #define timersub(tvp, uvp, vvp)                                         \
48         do {                                                            \
49                 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec;          \
50                 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec;       \
51                 if ((vvp)->tv_usec < 0) {                               \
52                         (vvp)->tv_sec--;                                \
53                         (vvp)->tv_usec += 1000000;                      \
54                 }                                                       \
55         } while (0)
56
57 #define TIMEOUT 120
58
59 static void __dead2
60 cleanup(int sig)
61 {
62         (void)rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
63         exit(0);
64 }
65
66 static void __dead2
67 die(int sig)
68 {
69         exit(0);
70 }
71
72 int
73 main(int argc, char *argv[])
74 {
75         SVCXPRT *transp;
76         int ok;
77         struct sockaddr_in from;
78         int fromlen;
79
80         /*
81          * See if inetd started us
82          */
83         fromlen = sizeof(from);
84         if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
85                 from_inetd = 0;
86         }
87
88         if (!from_inetd) {
89                 daemon(0, 0);
90
91                 (void) rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
92
93                 (void) signal(SIGINT, cleanup);
94                 (void) signal(SIGTERM, cleanup);
95                 (void) signal(SIGHUP, cleanup);
96         } else {
97                 (void) signal(SIGALRM, die);
98                 alarm(TIMEOUT);
99         }
100
101         openlog("rpc.sprayd", LOG_CONS|LOG_PID, LOG_DAEMON);
102
103         if (from_inetd) {
104                  transp = svc_tli_create(0, NULL, NULL, 0, 0);
105                  if (transp == NULL) {
106                          syslog(LOG_ERR, "cannot create udp service.");
107                          exit(1);
108                  }
109                  ok = svc_reg(transp, SPRAYPROG, SPRAYVERS,
110                      spray_service, NULL);
111         } else
112                 ok = svc_create(spray_service,
113                     SPRAYPROG, SPRAYVERS, "udp");
114
115         if (!ok) {
116                 syslog(LOG_ERR,
117                     "unable to register (SPRAYPROG, SPRAYVERS, %s)",
118                     (!from_inetd)?"udp":"(inetd)");
119                 return 1;
120         }
121
122         svc_run();
123         syslog(LOG_ERR, "svc_run returned");
124         return 1;
125 }
126
127
128 static void
129 spray_service(struct svc_req *rqstp, SVCXPRT *transp)
130 {
131         static spraycumul scum;
132         static struct timeval clear, get;
133
134         switch (rqstp->rq_proc) {
135         case SPRAYPROC_CLEAR:
136                 scum.counter = 0;
137                 (void) gettimeofday(&clear, 0);
138                 /*FALLTHROUGH*/
139
140         case NULLPROC:
141                 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
142                 return;
143
144         case SPRAYPROC_SPRAY:
145                 scum.counter++;
146                 return;
147
148         case SPRAYPROC_GET:
149                 (void) gettimeofday(&get, 0);
150                 timersub(&get, &clear, &get);
151                 scum.clock.sec = get.tv_sec;
152                 scum.clock.usec = get.tv_usec;
153                 break;
154
155         default:
156                 svcerr_noproc(transp);
157                 return;
158         }
159
160         if (!svc_sendreply(transp, (xdrproc_t)xdr_spraycumul, &scum)) {
161                 svcerr_systemerr(transp);
162                 syslog(LOG_ERR, "bad svc_sendreply");
163         }
164 }