--- /dev/null
+/*
+ Samba Unix/Linux SMB client library
+ net time command
+ Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
+
+ 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "includes.h"
+#include "utils/net.h"
+
+
+/*
+ return the time on a server. This does not require any authentication
+*/
+static time_t cli_servertime(const char *host, struct in_addr *ip, int *zone)
+{
+ struct nmb_name calling, called;
+ time_t ret = 0;
+ struct cli_state *cli = NULL;
+
+ cli = cli_initialise(NULL);
+ if (!cli) goto done;
+
+ if (!cli_connect(cli, host, ip)) {
+ fprintf(stderr,"Can't contact server\n");
+ goto done;
+ }
+
+ make_nmb_name(&calling, global_myname(), 0x0);
+ if (host) {
+ make_nmb_name(&called, host, 0x20);
+ } else {
+ make_nmb_name(&called, "*SMBSERVER", 0x20);
+ }
+
+ if (!cli_session_request(cli, &calling, &called)) {
+ fprintf(stderr,"Session request failed\n");
+ goto done;
+ }
+ if (!cli_negprot(cli)) {
+ fprintf(stderr,"Protocol negotiation failed\n");
+ goto done;
+ }
+
+ ret = cli->servertime;
+ if (zone) *zone = cli->serverzone;
+
+done:
+ if (cli) cli_shutdown(cli);
+ return ret;
+}
+
+/* find the servers time on the opt_host host */
+static time_t nettime(int *zone)
+{
+ return cli_servertime(opt_host, opt_have_ip? &opt_dest_ip : NULL, zone);
+}
+
+/* return a time as a string ready to be passed to /bin/date */
+static char *systime(time_t t)
+{
+ static fstring s;
+ struct tm *tm;
+
+ tm = localtime(&t);
+
+ fstr_sprintf(s, "%02d%02d%02d%02d%04d.%02d",
+ tm->tm_mon+1, tm->tm_mday, tm->tm_hour,
+ tm->tm_min, tm->tm_year + 1900, tm->tm_sec);
+ return s;
+}
+
+int net_time_usage(int argc, const char **argv)
+{
+ d_printf(
+"net time\n\tdisplays time on a server\n\n"\
+"net time system\n\tdisplays time on a server in a format ready for /bin/date\n\n"\
+"net time set\n\truns /bin/date with the time from the server\n\n"\
+"net time zone\n\tdisplays the timezone in hours from GMT on the remote computer\n\n"\
+"\n");
+ net_common_flags_usage(argc, argv);
+ return -1;
+}
+
+/* try to set the system clock using /bin/date */
+static int net_time_set(int argc, const char **argv)
+{
+ time_t t = nettime(NULL);
+ char *cmd;
+ int result;
+
+ if (t == 0) return -1;
+
+ /* yes, I know this is cheesy. Use "net time system" if you want to
+ roll your own. I'm putting this in as it works on a large number
+ of systems and the user has a choice in whether its used or not */
+ asprintf(&cmd, "/bin/date %s", systime(t));
+ result = system(cmd);
+ if (result)
+ d_fprintf(stderr, "%s failed. Error was (%s)\n",
+ cmd, strerror(errno));
+ free(cmd);
+
+ return result;
+}
+
+/* display the time on a remote box in a format ready for /bin/date */
+static int net_time_system(int argc, const char **argv)
+{
+ time_t t = nettime(NULL);
+
+ if (t == 0) return -1;
+
+ printf("%s\n", systime(t));
+
+ return 0;
+}
+
+/* display the time on a remote box in a format ready for /bin/date */
+static int net_time_zone(int argc, const char **argv)
+{
+ int zone = 0;
+ int hours, mins;
+ char zsign;
+ time_t t;
+
+ t = nettime(&zone);
+
+ if (t == 0) return -1;
+
+ zsign = (zone > 0) ? '-' : '+';
+ if (zone < 0) zone = -zone;
+
+ zone /= 60;
+ hours = zone / 60;
+ mins = zone % 60;
+
+ printf("%c%02d%02d\n", zsign, hours, mins);
+
+ return 0;
+}
+
+/* display or set the time on a host */
+int net_time(int argc, const char **argv)
+{
+ time_t t;
+ struct functable func[] = {
+ {"SYSTEM", net_time_system},
+ {"SET", net_time_set},
+ {"ZONE", net_time_zone},
+ {NULL, NULL}
+ };
+
+ if (!opt_host && !opt_have_ip &&
+ !find_master_ip(opt_target_workgroup, &opt_dest_ip)) {
+ d_fprintf(stderr, "Could not locate a time server. Try "\
+ "specifying a target host.\n");
+ net_time_usage(argc,argv);
+ return -1;
+ }
+
+ if (argc != 0) {
+ return net_run_function(argc, argv, func, net_time_usage);
+ }
+
+ /* default - print the time */
+ t = cli_servertime(opt_host, opt_have_ip? &opt_dest_ip : NULL, NULL);
+ if (t == 0) return -1;
+
+ d_printf("%s", ctime(&t));
+ return 0;
+}
projects / samba / blobdiff