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author | Eric Andersen | 2001-10-24 05:00:29 +0000 |
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committer | Eric Andersen | 2001-10-24 05:00:29 +0000 |
commit | bdfd0d78bc44e73d693510e70087857785b3b521 (patch) | |
tree | 153a573095afac8d8d0ea857759ecabd77fb28b7 /rdate.c | |
parent | 9260fc5552a3ee52eb95823aa6689d52a1ffd33c (diff) | |
download | busybox-bdfd0d78bc44e73d693510e70087857785b3b521.zip busybox-bdfd0d78bc44e73d693510e70087857785b3b521.tar.gz |
Major rework of the directory structure and the entire build system.
-Erik
Diffstat (limited to 'rdate.c')
-rw-r--r-- | rdate.c | 116 |
1 files changed, 0 insertions, 116 deletions
diff --git a/rdate.c b/rdate.c deleted file mode 100644 index 04a7612..0000000 --- a/rdate.c +++ /dev/null @@ -1,116 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * The Rdate command will ask a time server for the RFC 868 time - * and optionally set the system time. - * - * by Sterling Huxley <sterling@europa.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * -*/ - -#include <sys/time.h> -#include <sys/types.h> -#include <sys/socket.h> -#include <netinet/in.h> -#include <netdb.h> -#include <stdio.h> -#include <getopt.h> -#include <string.h> -#include <time.h> -#include <stdlib.h> -#include <unistd.h> -#include "busybox.h" - - -static const int RFC_868_BIAS = 2208988800UL; - -static time_t askremotedate(const char *host) -{ - struct hostent *h; - struct sockaddr_in s_in; - struct servent *tserv; - unsigned long int nett, localt; - int fd; - - h = xgethostbyname(host); /* get the IP addr */ - memcpy(&s_in.sin_addr, h->h_addr, sizeof(s_in.sin_addr)); - - s_in.sin_port = htons(37); /* find port # */ - if ((tserv = getservbyname("time", "tcp")) != NULL) - s_in.sin_port = tserv->s_port; - - s_in.sin_family = AF_INET; - - if ((fd = socket(AF_INET, SOCK_STREAM, 0)) < 0) /* get net connection */ - perror_msg_and_die("socket"); - - if (connect(fd, (struct sockaddr *)&s_in, sizeof(s_in)) < 0) /* connect to time server */ - perror_msg_and_die("%s", host); - - if (read(fd, (void *)&nett, 4) != 4) /* read time from server */ - error_msg_and_die("%s did not send the complete time", host); - - close(fd); - - /* convert from network byte order to local byte order. - * RFC 868 time is the number of seconds - * since 00:00 (midnight) 1 January 1900 GMT - * the RFC 868 time 2,208,988,800 corresponds to 00:00 1 Jan 1970 GMT - * Subtract the RFC 868 time to get Linux epoch - */ - localt= ntohl(nett) - RFC_868_BIAS; - - return(localt); -} - -int rdate_main(int argc, char **argv) -{ - time_t remote_time; - int opt; - int setdate = 1; - int printdate = 1; - - /* Interpret command line args */ - while ((opt = getopt(argc, argv, "sp")) > 0) { - switch (opt) { - case 's': - printdate = 0; - setdate = 1; - break; - case 'p': - printdate = 1; - setdate = 0; - break; - default: - show_usage(); - } - } - - if (optind == argc) - show_usage(); - - remote_time = askremotedate(argv[optind]); - - if (setdate) { - if (stime(&remote_time) < 0) - perror_msg_and_die("Could not set time of day"); - } - - if (printdate) - printf("%s", ctime(&remote_time)); - - return EXIT_SUCCESS; -} |