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, global_myname(), 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 const char *systime(time_t t)
82 fstr_sprintf(s, "%02d%02d%02d%02d%04d.%02d",
83 tm->tm_mon+1, tm->tm_mday, tm->tm_hour,
84 tm->tm_min, tm->tm_year + 1900, tm->tm_sec);
88 int net_time_usage(int argc, const char **argv)
91 "net time\n\tdisplays time on a server\n\n"\
92 "net time system\n\tdisplays time on a server in a format ready for /bin/date\n\n"\
93 "net time set\n\truns /bin/date with the time from the server\n\n"\
94 "net time zone\n\tdisplays the timezone in hours from GMT on the remote computer\n\n"\
96 net_common_flags_usage(argc, argv);
100 /* try to set the system clock using /bin/date */
101 static int net_time_set(int argc, const char **argv)
103 time_t t = nettime(NULL);
107 if (t == 0) return -1;
109 /* yes, I know this is cheesy. Use "net time system" if you want to
110 roll your own. I'm putting this in as it works on a large number
111 of systems and the user has a choice in whether its used or not */
112 asprintf(&cmd, "/bin/date %s", systime(t));
113 result = system(cmd);
115 d_fprintf(stderr, "%s failed. Error was (%s)\n",
116 cmd, strerror(errno));
122 /* display the time on a remote box in a format ready for /bin/date */
123 static int net_time_system(int argc, const char **argv)
125 time_t t = nettime(NULL);
127 if (t == 0) return -1;
129 printf("%s\n", systime(t));
134 /* display the time on a remote box in a format ready for /bin/date */
135 static int net_time_zone(int argc, const char **argv)
144 if (t == 0) return -1;
146 zsign = (zone > 0) ? '-' : '+';
147 if (zone < 0) zone = -zone;
153 printf("%c%02d%02d\n", zsign, hours, mins);
158 /* display or set the time on a host */
159 int net_time(int argc, const char **argv)
162 struct functable func[] = {
163 {"SYSTEM", net_time_system},
164 {"SET", net_time_set},
165 {"ZONE", net_time_zone},
169 if (!opt_host && !opt_have_ip &&
170 !find_master_ip(opt_target_workgroup, &opt_dest_ip)) {
171 d_fprintf(stderr, "Could not locate a time server. Try "\
172 "specifying a target host.\n");
173 net_time_usage(argc,argv);
178 return net_run_function(argc, argv, func, net_time_usage);
181 /* default - print the time */
182 t = cli_servertime(opt_host, opt_have_ip? &opt_dest_ip : NULL, NULL);
183 if (t == 0) return -1;
185 d_printf("%s", ctime(&t));