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"
24 return the time on a server. This does not require any authentication
26 static time_t cli_servertime(const char *host, struct sockaddr_storage *pss, int *zone)
28 struct nmb_name calling, called;
30 struct cli_state *cli = NULL;
33 cli = cli_initialise();
38 status = cli_connect(cli, host, pss);
39 if (!NT_STATUS_IS_OK(status)) {
40 fprintf(stderr,"Can't contact server %s. Error %s\n", host, nt_errstr(status));
44 make_nmb_name(&calling, global_myname(), 0x0);
46 make_nmb_name(&called, host, 0x20);
48 make_nmb_name(&called, "*SMBSERVER", 0x20);
51 if (!cli_session_request(cli, &calling, &called)) {
52 fprintf(stderr,"Session request failed\n");
55 if (!cli_negprot(cli)) {
56 fprintf(stderr,"Protocol negotiation failed\n");
60 ret = cli->servertime;
61 if (zone) *zone = cli->serverzone;
70 /* find the servers time on the opt_host host */
71 static time_t nettime(struct net_context *c, int *zone)
73 return cli_servertime(c->opt_host,
74 c->opt_have_ip? &c->opt_dest_ip : NULL, zone);
77 /* return a time as a string ready to be passed to /bin/date */
78 static const char *systime(time_t t)
88 fstr_sprintf(s, "%02d%02d%02d%02d%04d.%02d",
89 tm->tm_mon+1, tm->tm_mday, tm->tm_hour,
90 tm->tm_min, tm->tm_year + 1900, tm->tm_sec);
94 int net_time_usage(struct net_context *c, int argc, const char **argv)
97 "net time\n\tdisplays time on a server\n\n"\
98 "net time system\n\tdisplays time on a server in a format ready for /bin/date\n\n"\
99 "net time set\n\truns /bin/date with the time from the server\n\n"\
100 "net time zone\n\tdisplays the timezone in hours from GMT on the remote computer\n\n"\
102 net_common_flags_usage(c, argc, argv);
106 /* try to set the system clock using /bin/date */
107 static int net_time_set(struct net_context *c, int argc, const char **argv)
109 time_t t = nettime(c, NULL);
113 if (t == 0) return -1;
115 /* yes, I know this is cheesy. Use "net time system" if you want to
116 roll your own. I'm putting this in as it works on a large number
117 of systems and the user has a choice in whether its used or not */
118 asprintf(&cmd, "/bin/date %s", systime(t));
119 result = system(cmd);
121 d_fprintf(stderr, "%s failed. Error was (%s)\n",
122 cmd, strerror(errno));
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)
131 time_t t = nettime(c, NULL);
133 if (t == 0) return -1;
135 printf("%s\n", systime(t));
140 /* display the time on a remote box in a format ready for /bin/date */
141 static int net_time_zone(struct net_context *c, int argc, const char **argv)
148 t = nettime(c, &zone);
150 if (t == 0) return -1;
152 zsign = (zone > 0) ? '-' : '+';
153 if (zone < 0) zone = -zone;
159 printf("%c%02d%02d\n", zsign, hours, mins);
164 /* display or set the time on a host */
165 int net_time(struct net_context *c, int argc, const char **argv)
168 struct functable func[] = {
169 {"SYSTEM", net_time_system},
170 {"SET", net_time_set},
171 {"ZONE", net_time_zone},
175 if (!c->opt_host && !c->opt_have_ip &&
176 !find_master_ip(c->opt_target_workgroup, &c->opt_dest_ip)) {
177 d_fprintf(stderr, "Could not locate a time server. Try "\
178 "specifying a target host.\n");
179 net_time_usage(c, argc,argv);
184 return net_run_function(c, argc, argv, func, net_time_usage);
187 /* default - print the time */
188 t = cli_servertime(c->opt_host, c->opt_have_ip? &c->opt_dest_ip : NULL,
190 if (t == 0) return -1;
192 d_printf("%s", ctime(&t));