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 } 162