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Diffstat (limited to 'src/usr.sbin/rdate/rdate.c')
| -rw-r--r-- | src/usr.sbin/rdate/rdate.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/usr.sbin/rdate/rdate.c b/src/usr.sbin/rdate/rdate.c new file mode 100644 index 0000000..1c503dc --- /dev/null +++ b/src/usr.sbin/rdate/rdate.c @@ -0,0 +1,173 @@ +/* $OpenBSD: rdate.c,v 1.30 2013/11/12 22:27:13 deraadt Exp $ */ +/* $NetBSD: rdate.c,v 1.4 1996/03/16 12:37:45 pk Exp $ */ + +/* + * Copyright (c) 1994 Christos Zoulas + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Christos Zoulas. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * rdate.c: Set the date from the specified host + * + * Time is returned as the number of seconds since + * midnight January 1st 1900. + */ + +#include <sys/param.h> +#include <sys/socket.h> +#include <sys/time.h> + +#include <stdio.h> +#include <stdlib.h> +#include <ctype.h> +#include <err.h> +#include <string.h> +#include <unistd.h> +#include <time.h> + +/* there are systems without libutil; for portability */ +#ifndef NO_UTIL +#include <util.h> +#else +#define logwtmp(a,b,c) +#endif + +void rfc868time_client(const char *, int, struct timeval *, struct timeval *, int); +void ntp_client(const char *, int, struct timeval *, struct timeval *, int); + +extern char *__progname; +__dead void usage(void); + +__dead void +usage(void) +{ + (void) fprintf(stderr, "usage: %s [-46acnopsv] host\n", __progname); + exit(1); +} + +int +main(int argc, char **argv) +{ + int pr = 0, silent = 0, ntp = 1, verbose = 0; + int slidetime = 0, corrleaps = 0; + char *hname; + extern int optind; + int c; + int family = PF_UNSPEC; + + struct timeval new, adjust; + + while ((c = getopt(argc, argv, "46psanocv")) != -1) { + switch (c) { + case '4': + family = PF_INET; + break; + + case '6': + family = PF_INET6; + break; + + case 'p': + pr++; + break; + + case 's': + silent++; + break; + + case 'a': + slidetime++; + break; + + case 'n': + ntp++; + break; + + case 'o': + ntp = 0; + break; + + case 'c': + corrleaps = 1; + break; + + case 'v': + verbose++; + break; + + default: + usage(); + } + } + if (argc - 1 != optind) + usage(); + hname = argv[optind]; + + if (ntp) + ntp_client(hname, family, &new, &adjust, corrleaps); + else + rfc868time_client(hname, family, &new, &adjust, corrleaps); + + if (!pr) { + if (!slidetime) { + logwtmp("|", "date", ""); + if (settimeofday(&new, NULL) == -1) + err(1, "Could not set time of day"); + logwtmp("{", "date", ""); + } else { + if (adjtime(&adjust, NULL) == -1) + err(1, "Could not adjust time of day"); + } + } + + if (!silent) { + struct tm *ltm; + char buf[80]; + time_t tim = new.tv_sec; + double adjsec; + + ltm = localtime(&tim); + (void) strftime(buf, sizeof buf, "%a %b %e %H:%M:%S %Z %Y\n", ltm); + (void) fputs(buf, stdout); + + adjsec = adjust.tv_sec + adjust.tv_usec / 1.0e6; + + if (slidetime || verbose) { + if (ntp) + (void) fprintf(stdout, + "%s: adjust local clock by %.6f seconds\n", + __progname, adjsec); + else + (void) fprintf(stdout, + "%s: adjust local clock by %lld seconds\n", + __progname, (long long)adjust.tv_sec); + } + } + + return 0; +} |