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 * $DragonFly: src/libexec/rpc.sprayd/sprayd.c,v 1.3 2003/11/14 03:54:31 dillon Exp $ 32 */ 33 34 #include <rpc/rpc.h> 35 #include <rpc/pmap_clnt.h> 36 #include <rpcsvc/spray.h> 37 #include <signal.h> 38 #include <stdio.h> 39 #include <stdlib.h> 40 #include <sys/time.h> 41 #include <sys/socket.h> 42 #include <syslog.h> 43 #include <unistd.h> 44 45 static void spray_service (struct svc_req *, SVCXPRT *); 46 47 static int from_inetd = 1; 48 49 #define timersub(tvp, uvp, vvp) \ 50 do { \ 51 (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \ 52 (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \ 53 if ((vvp)->tv_usec < 0) { \ 54 (vvp)->tv_sec--; \ 55 (vvp)->tv_usec += 1000000; \ 56 } \ 57 } while (0) 58 59 #define TIMEOUT 120 60 61 void 62 cleanup() 63 { 64 (void) pmap_unset(SPRAYPROG, SPRAYVERS); 65 exit(0); 66 } 67 68 void 69 die() 70 { 71 exit(0); 72 } 73 74 int 75 main(argc, argv) 76 int argc; 77 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(rqstp, transp) 130 struct svc_req *rqstp; 131 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, xdr_void, (char *)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, xdr_spraycumul, (caddr_t)&scum)) { 163 svcerr_systemerr(transp); 164 syslog(LOG_ERR, "bad svc_sendreply"); 165 } 166 } 167