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 <rpc/pmap_clnt.h> 38 #include <rpcsvc/spray.h> 39 #include <signal.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <sys/time.h> 43 #include <sys/socket.h> 44 #include <syslog.h> 45 #include <unistd.h> 46 47 static void spray_service(struct svc_req *, SVCXPRT *); 48 49 static int from_inetd = 1; 50 51 #define timersub(tvp, uvp, vvp) \ 52 do { \ 53 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 54 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 55 if ((vvp)->tv_usec < 0) { \ 56 (vvp)->tv_sec--; \ 57 (vvp)->tv_usec += 1000000; \ 58 } \ 59 } while (0) 60 61 #define TIMEOUT 120 62 63 void 64 cleanup(int sig __unused) 65 { 66 (void) pmap_unset(SPRAYPROG, SPRAYVERS); 67 exit(0); 68 } 69 70 void 71 die(int sig __unused) 72 { 73 exit(0); 74 } 75 76 int 77 main(int argc, char *argv[]) 78 { 79 SVCXPRT *transp; 80 int sock = 0; 81 int proto = 0; 82 struct sockaddr_in from; 83 int 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 sock = RPC_ANYSOCK; 92 proto = IPPROTO_UDP; 93 } 94 95 if (!from_inetd) { 96 daemon(0, 0); 97 98 (void) pmap_unset(SPRAYPROG, SPRAYVERS); 99 100 (void) signal(SIGINT, cleanup); 101 (void) signal(SIGTERM, cleanup); 102 (void) signal(SIGHUP, cleanup); 103 } else { 104 (void) signal(SIGALRM, die); 105 alarm(TIMEOUT); 106 } 107 108 openlog("rpc.sprayd", LOG_CONS|LOG_PID, LOG_DAEMON); 109 110 transp = svcudp_create(sock); 111 if (transp == NULL) { 112 syslog(LOG_ERR, "cannot create udp service"); 113 return 1; 114 } 115 if (!svc_register(transp, SPRAYPROG, SPRAYVERS, spray_service, proto)) { 116 syslog(LOG_ERR, 117 "unable to register (SPRAYPROG, SPRAYVERS, %s)", 118 proto ? "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 } 165