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
31 #ifndef lint
32 static const char rcsid[] =
33 "$FreeBSD$";
34 #endif /* not lint */
35
36 #include <rpc/rpc.h>
37 #include <rpcsvc/spray.h>
38 #include <signal.h>
39 #include <stdio.h>
40 #include <stdlib.h>
41 #include <sys/time.h>
42 #include <sys/socket.h>
43 #include <syslog.h>
44 #include <unistd.h>
45
46 static void spray_service(struct svc_req *, SVCXPRT *);
47
48 static int from_inetd = 1;
49
50 #define timersub(tvp, uvp, vvp) \
51 do { \
52 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
53 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
54 if ((vvp)->tv_usec < 0) { \
55 (vvp)->tv_sec--; \
56 (vvp)->tv_usec += 1000000; \
57 } \
58 } while (0)
59
60 #define TIMEOUT 120
61
62 void
cleanup(int sig __unused)63 cleanup(int sig __unused)
64 {
65 (void) rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
66 exit(0);
67 }
68
69 void
die(int sig __unused)70 die(int sig __unused)
71 {
72 exit(0);
73 }
74
75 int
main(int argc,char * argv[])76 main(int argc, char *argv[])
77 {
78 SVCXPRT *transp;
79 int ok;
80 struct sockaddr_storage from;
81 socklen_t fromlen;
82
83 /*
84 * See if inetd started us
85 */
86 fromlen = sizeof(from);
87 if (getsockname(0, (struct sockaddr *)&from, &fromlen) < 0) {
88 from_inetd = 0;
89 }
90
91 if (!from_inetd) {
92 daemon(0, 0);
93
94 (void) rpcb_unset(SPRAYPROG, SPRAYVERS, NULL);
95
96 (void) signal(SIGINT, cleanup);
97 (void) signal(SIGTERM, cleanup);
98 (void) signal(SIGHUP, cleanup);
99 } else {
100 (void) signal(SIGALRM, die);
101 alarm(TIMEOUT);
102 }
103
104 openlog("rpc.sprayd", LOG_CONS|LOG_PID, LOG_DAEMON);
105
106 if (from_inetd) {
107 transp = svc_tli_create(0, NULL, NULL, 0, 0);
108 if (transp == NULL) {
109 syslog(LOG_ERR, "cannot create udp service.");
110 exit(1);
111 }
112 ok = svc_reg(transp, SPRAYPROG, SPRAYVERS,
113 spray_service, NULL);
114 } else
115 ok = svc_create(spray_service,
116 SPRAYPROG, SPRAYVERS, "udp");
117 if (!ok) {
118 syslog(LOG_ERR,
119 "unable to register (SPRAYPROG, SPRAYVERS, %s)",
120 (!from_inetd)?"udp":"(inetd)");
121 return 1;
122 }
123
124 svc_run();
125 syslog(LOG_ERR, "svc_run returned");
126 return 1;
127 }
128
129
130 static void
spray_service(struct svc_req * rqstp,SVCXPRT * transp)131 spray_service(struct svc_req *rqstp, SVCXPRT *transp)
132 {
133 static spraycumul scum;
134 static struct timeval clear, get;
135
136 switch (rqstp->rq_proc) {
137 case SPRAYPROC_CLEAR:
138 scum.counter = 0;
139 (void) gettimeofday(&clear, 0);
140 /*FALLTHROUGH*/
141
142 case NULLPROC:
143 (void)svc_sendreply(transp, (xdrproc_t)xdr_void, NULL);
144 return;
145
146 case SPRAYPROC_SPRAY:
147 scum.counter++;
148 return;
149
150 case SPRAYPROC_GET:
151 (void) gettimeofday(&get, 0);
152 timersub(&get, &clear, &get);
153 scum.clock.sec = get.tv_sec;
154 scum.clock.usec = get.tv_usec;
155 break;
156
157 default:
158 svcerr_noproc(transp);
159 return;
160 }
161
162 if (!svc_sendreply(transp, (xdrproc_t)xdr_spraycumul, &scum)) {
163 svcerr_systemerr(transp);
164 syslog(LOG_ERR, "bad svc_sendreply");
165 }
166 }
167