2 Samba Unix/Linux SMB client library
4 Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "utils/net.h"
21 #include "libsmb/nmblib.h"
22 #include "libsmb/libsmb.h"
25 return the time on a server. This does not require any authentication
27 static time_t cli_servertime(const char *host, struct sockaddr_storage *pss, int *zone)
29 struct nmb_name calling, called;
31 struct cli_state *cli = NULL;
34 cli = cli_initialise();
39 status = cli_connect(cli, host, pss);
40 if (!NT_STATUS_IS_OK(status)) {
41 fprintf(stderr, _("Can't contact server %s. Error %s\n"),
42 host, nt_errstr(status));
46 make_nmb_name(&calling, global_myname(), 0x0);
48 make_nmb_name(&called, host, 0x20);
50 make_nmb_name(&called, "*SMBSERVER", 0x20);
53 if (!cli_session_request(cli, &calling, &called)) {
54 fprintf(stderr, _("Session request failed\n"));
57 status = cli_negprot(cli);
58 if (!NT_STATUS_IS_OK(status)) {
59 fprintf(stderr, _("Protocol negotiation failed: %s\n"),
64 ret = cli->servertime;
65 if (zone) *zone = cli->serverzone;
74 /* find the servers time on the opt_host host */
75 static time_t nettime(struct net_context *c, int *zone)
77 return cli_servertime(c->opt_host,
78 c->opt_have_ip? &c->opt_dest_ip : NULL, zone);
81 /* return a time as a string ready to be passed to /bin/date */
82 static const char *systime(time_t t)
91 return talloc_asprintf(talloc_tos(), "%02d%02d%02d%02d%04d.%02d",
92 tm->tm_mon+1, tm->tm_mday, tm->tm_hour,
93 tm->tm_min, tm->tm_year + 1900, tm->tm_sec);
96 int net_time_usage(struct net_context *c, int argc, const char **argv)
99 "net time\n\tdisplays time on a server\n\n"
100 "net time system\n\tdisplays time on a server in a format ready for /bin/date\n\n"
101 "net time set\n\truns /bin/date with the time from the server\n\n"
102 "net time zone\n\tdisplays the timezone in hours from GMT on the remote computer\n\n"
104 net_common_flags_usage(c, argc, argv);
108 /* try to set the system clock */
109 static int net_time_set(struct net_context *c, int argc, const char **argv)
114 tv.tv_sec = nettime(c, NULL);
117 if (tv.tv_sec == 0) return -1;
119 result = settimeofday(&tv,NULL);
122 d_fprintf(stderr, _("setting system clock failed. Error was (%s)\n"),
128 /* display the time on a remote box in a format ready for /bin/date */
129 static int net_time_system(struct net_context *c, int argc, const char **argv)
133 if (c->display_usage) {
138 _("Output remote time server time in a format "
139 "ready for /bin/date"));
143 t = nettime(c, NULL);
144 if (t == 0) return -1;
146 printf("%s\n", systime(t));
151 /* display the remote time server's offset to UTC */
152 static int net_time_zone(struct net_context *c, int argc, const char **argv)
159 if (c->display_usage) {
164 _("Display the remote time server's offset to "
169 t = nettime(c, &zone);
171 if (t == 0) return -1;
173 zsign = (zone > 0) ? '-' : '+';
174 if (zone < 0) zone = -zone;
180 printf("%c%02d%02d\n", zsign, hours, mins);
185 /* display or set the time on a host */
186 int net_time(struct net_context *c, int argc, const char **argv)
189 struct functable func[] = {
194 N_("Display time ready for /bin/date"),
195 N_("net time system\n"
196 " Display time ready for /bin/date")
202 N_("Set the system time from time server"),
204 " Set the system time from time server")
210 N_("Display timezone offset from UTC"),
212 " Display timezone offset from UTC")
214 {NULL, NULL, 0, NULL, NULL}
218 return net_run_function(c, argc, argv, "net time", func);
221 if (c->display_usage) {
226 _("Display the remote time server's time"));
227 net_display_usage_from_functable(func);
231 if (!c->opt_host && !c->opt_have_ip &&
232 !find_master_ip(c->opt_target_workgroup, &c->opt_dest_ip)) {
233 d_fprintf(stderr, _("Could not locate a time server. Try "
234 "specifying a target host.\n"));
235 net_time_usage(c, argc,argv);
239 /* default - print the time */
240 t = cli_servertime(c->opt_host, c->opt_have_ip? &c->opt_dest_ip : NULL,
242 if (t == 0) return -1;
244 d_printf("%s", ctime(&t));