1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#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 sockaddr_storage *pss, int *zone)
{
struct nmb_name calling, called;
time_t ret = 0;
struct cli_state *cli = NULL;
NTSTATUS status;
cli = cli_initialise();
if (!cli) {
goto done;
}
status = cli_connect(cli, host, pss);
if (!NT_STATUS_IS_OK(status)) {
fprintf(stderr,"Can't contact server %s. Error %s\n", host, nt_errstr(status));
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(struct net_context *c, int *zone)
{
return cli_servertime(c->opt_host,
c->opt_have_ip? &c->opt_dest_ip : NULL, zone);
}
/* return a time as a string ready to be passed to /bin/date */
static const char *systime(time_t t)
{
static fstring s;
struct tm *tm;
tm = localtime(&t);
if (!tm) {
return "unknown";
}
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(struct net_context *c, 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(c, argc, argv);
return -1;
}
/* try to set the system clock using /bin/date */
static int net_time_set(struct net_context *c, int argc, const char **argv)
{
time_t t = nettime(c, 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(struct net_context *c, int argc, const char **argv)
{
time_t t = nettime(c, 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(struct net_context *c, int argc, const char **argv)
{
int zone = 0;
int hours, mins;
char zsign;
time_t t;
t = nettime(c, &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(struct net_context *c, 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 (!c->opt_host && !c->opt_have_ip &&
!find_master_ip(c->opt_target_workgroup, &c->opt_dest_ip)) {
d_fprintf(stderr, "Could not locate a time server. Try "\
"specifying a target host.\n");
net_time_usage(c, argc,argv);
return -1;
}
if (argc != 0) {
return net_run_function(c, argc, argv, func, net_time_usage);
}
/* default - print the time */
t = cli_servertime(c->opt_host, c->opt_have_ip? &c->opt_dest_ip : NULL,
NULL);
if (t == 0) return -1;
d_printf("%s", ctime(&t));
return 0;
}
|
