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 /* 28 * time inetd service - both stream and dgram based. 29 */ 30 31 #include <sys/types.h> 32 #include <sys/socket.h> 33 #include <unistd.h> 34 #include <stdio.h> 35 #include <netinet/in.h> 36 #include <sys/time.h> 37 #include <syslog.h> 38 #include <inetsvc.h> 39 40 41 /* 42 * Return a machine readable date and time, in the form of the 43 * number of seconds since midnight, Jan 1, 1900. Since gettimeofday 44 * returns the number of seconds since midnight, Jan 1, 1970, 45 * we must add 2208988800 seconds to this figure to make up for 46 * some seventy years Bell Labs was asleep. 47 */ 48 static uint32_t 49 machtime(void) 50 { 51 struct timeval tv; 52 53 if (gettimeofday(&tv, NULL) < 0) { 54 syslog(LOG_INFO, "Unable to get time of day"); 55 return (0); 56 } 57 return ((uint32_t)htonl(tv.tv_sec + 2208988800U)); 58 } 59 60 static void 61 machtime_stream(int s) 62 { 63 uint32_t result = machtime(); 64 65 (void) safe_write(s, &result, sizeof (result)); 66 } 67 68 /* ARGSUSED3 */ 69 static void 70 machtime_dg(int s, const struct sockaddr *sap, int sa_len, const void *buf, 71 size_t sz) 72 { 73 uint32_t result = machtime(); 74 75 (void) safe_sendto(s, &result, sizeof (result), 0, sap, sa_len); 76 } 77 78 int 79 main(int argc, char *argv[]) 80 { 81 opterr = 0; /* disable getopt error msgs */ 82 switch (getopt(argc, argv, "ds")) { 83 case 'd': 84 dg_template(machtime_dg, STDIN_FILENO, NULL, 0); 85 break; 86 case 's': 87 machtime_stream(STDIN_FILENO); 88 break; 89 default: 90 return (1); 91 } 92 93 return (0); 94 } 95