1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * time inetd service - both stream and dgram based. 31 */ 32 33 #include <sys/types.h> 34 #include <sys/socket.h> 35 #include <unistd.h> 36 #include <stdio.h> 37 #include <netinet/in.h> 38 #include <sys/time.h> 39 #include <syslog.h> 40 #include <inetsvc.h> 41 42 43 /* 44 * Return a machine readable date and time, in the form of the 45 * number of seconds since midnight, Jan 1, 1900. Since gettimeofday 46 * returns the number of seconds since midnight, Jan 1, 1970, 47 * we must add 2208988800 seconds to this figure to make up for 48 * some seventy years Bell Labs was asleep. 49 */ 50 static uint32_t 51 machtime(void) 52 { 53 struct timeval tv; 54 55 if (gettimeofday(&tv, NULL) < 0) { 56 syslog(LOG_INFO, "Unable to get time of day"); 57 return (0); 58 } 59 return ((uint32_t)htonl(tv.tv_sec + 2208988800U)); 60 } 61 62 static void 63 machtime_stream(int s) 64 { 65 uint32_t result = machtime(); 66 67 (void) safe_write(s, &result, sizeof (result)); 68 } 69 70 /* ARGSUSED3 */ 71 static void 72 machtime_dg(int s, const struct sockaddr *sap, int sa_len, const void *buf, 73 size_t sz) 74 { 75 uint32_t result = machtime(); 76 77 (void) safe_sendto(s, &result, sizeof (result), 0, sap, sa_len); 78 } 79 80 int 81 main(int argc, char *argv[]) 82 { 83 opterr = 0; /* disable getopt error msgs */ 84 switch (getopt(argc, argv, "ds")) { 85 case 'd': 86 dg_template(machtime_dg, STDIN_FILENO, NULL, 0); 87 break; 88 case 's': 89 machtime_stream(STDIN_FILENO); 90 break; 91 default: 92 return (1); 93 } 94 95 return (0); 96 } 97