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 2 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, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
21 #include "../utils/net.h"
25 return the time on a server. This does not require any authentication
27 static time_t cli_servertime(const char *host, struct in_addr *ip, int *zone)
29 struct nmb_name calling, called;
31 struct cli_state *cli = NULL;
33 cli = cli_initialise(NULL);
36 if (!cli_connect(cli, host, ip)) {
37 fprintf(stderr,"Can't contact server\n");
41 make_nmb_name(&calling, lp_netbios_name(), 0x0);
43 make_nmb_name(&called, host, 0x20);
45 make_nmb_name(&called, "*SMBSERVER", 0x20);
48 if (!cli_session_request(cli, &calling, &called)) {
49 fprintf(stderr,"Session request failed\n");
52 if (!cli_negprot(cli)) {
53 fprintf(stderr,"Protocol negotiation failed\n");
57 ret = cli->servertime;
58 if (zone) *zone = cli->serverzone;
61 if (cli) cli_shutdown(cli);
65 /* find the servers time on the opt_host host */
66 static time_t nettime(int *zone)
68 return cli_servertime(opt_host, opt_have_ip? &opt_dest_ip : NULL, zone);
71 /* return a time as a string ready to be passed to /bin/date */
72 static char *systime(time_t t)
79 snprintf(s, sizeof(s), "%02d%02d%02d%02d%04d.%02d",
80 tm->tm_mon+1, tm->tm_mday, tm->tm_hour,
81 tm->tm_min, tm->tm_year + 1900, tm->tm_sec);
85 int net_time_usage(int argc, const char **argv)
88 "net time\n\tdisplays time on a server\n\n"\
89 "net time system\n\tdisplays time on a server in a format ready for /bin/date\n\n"\
90 "net time set\n\truns /bin/date with the time from the server\n\n"\
91 "net time zone\n\tdisplays the timezone in hours from GMT on the remote computer\n\n"\
93 net_common_flags_usage(argc, argv);
97 /* try to set the system clock using /bin/date */
98 static int net_time_set(int argc, const char **argv)
100 time_t t = nettime(NULL);
103 if (t == 0) return -1;
105 /* yes, I know this is cheesy. Use "net time system" if you want to
106 roll your own. I'm putting this in as it works on a large number
107 of systems and the user has a choice in whether its used or not */
108 asprintf(&cmd, "/bin/date %s", systime(t));
115 /* display the time on a remote box in a format ready for /bin/date */
116 static int net_time_system(int argc, const char **argv)
118 time_t t = nettime(NULL);
120 if (t == 0) return -1;
122 printf("%s\n", systime(t));
127 /* display the time on a remote box in a format ready for /bin/date */
128 static int net_time_zone(int argc, const char **argv)
137 if (t == 0) return -1;
139 zsign = (zone > 0) ? '-' : '+';
140 if (zone < 0) zone = -zone;
146 printf("%c%02d%02d\n", zsign, hours, mins);
151 /* display or set the time on a host */
152 int net_time(int argc, const char **argv)
155 struct functable func[] = {
156 {"SYSTEM", net_time_system},
157 {"SET", net_time_set},
158 {"ZONE", net_time_zone},
162 if (!opt_host && !opt_have_ip &&
163 !find_master_ip(opt_target_workgroup, &opt_dest_ip)) {
164 d_printf("Could not locate a time server. Try "\
165 "specifying a target host.\n");
166 net_time_usage(argc,argv);
171 return net_run_function(argc, argv, func, net_time_usage);
174 /* default - print the time */
175 t = cli_servertime(opt_host, opt_have_ip? &opt_dest_ip : NULL, NULL);
176 if (t == 0) return -1;
178 d_printf("%s", ctime(&t));