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42ce5170 | 1 | /* date.c - command to display/set current datetime. */ |
2 | /* | |
3 | * GRUB -- GRand Unified Bootloader | |
4 | * Copyright (C) 2008 Free Software Foundation, Inc. | |
5 | * | |
6 | * GRUB 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. | |
10 | * | |
11 | * GRUB 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. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with GRUB. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
42ce5170 | 20 | #include <grub/dl.h> |
42ce5170 | 21 | #include <grub/err.h> |
22 | #include <grub/misc.h> | |
05aaebfb | 23 | #include <grub/datetime.h> |
b1b797cb | 24 | #include <grub/command.h> |
77a79592 | 25 | #include <grub/i18n.h> |
42ce5170 | 26 | |
27 | #define GRUB_DATETIME_SET_YEAR 1 | |
28 | #define GRUB_DATETIME_SET_MONTH 2 | |
29 | #define GRUB_DATETIME_SET_DAY 4 | |
30 | #define GRUB_DATETIME_SET_HOUR 8 | |
31 | #define GRUB_DATETIME_SET_MINUTE 16 | |
32 | #define GRUB_DATETIME_SET_SECOND 32 | |
33 | ||
34 | static grub_err_t | |
b1b797cb | 35 | grub_cmd_date (grub_command_t cmd __attribute__ ((unused)), |
42ce5170 | 36 | int argc, char **args) |
37 | { | |
38 | struct grub_datetime datetime; | |
39 | int limit[6][2] = {{1980, 2079}, {1, 12}, {1, 31}, {0, 23}, {0, 59}, {0, 59}}; | |
40 | int value[6], mask; | |
41 | ||
42 | if (argc == 0) | |
43 | { | |
44 | if (grub_get_datetime (&datetime)) | |
45 | return grub_errno; | |
46 | ||
47 | grub_printf ("%d-%02d-%02d %02d:%02d:%02d %s\n", | |
48 | datetime.year, datetime.month, datetime.day, | |
49 | datetime.hour, datetime.minute, datetime.second, | |
50 | grub_get_weekday_name (&datetime)); | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | grub_memset (&value, 0, sizeof (value)); | |
56 | mask = 0; | |
57 | ||
58 | for (; argc; argc--, args++) | |
59 | { | |
60 | char *p, c; | |
61 | int m1, ofs, n, cur_mask; | |
62 | ||
63 | p = args[0]; | |
64 | m1 = grub_strtoul (p, &p, 10); | |
65 | ||
66 | c = *p; | |
67 | if (c == '-') | |
68 | ofs = 0; | |
69 | else if (c == ':') | |
70 | ofs = 3; | |
71 | else | |
72 | goto fail; | |
73 | ||
74 | value[ofs] = m1; | |
75 | cur_mask = (1 << ofs); | |
76 | mask &= ~(cur_mask * (1 + 2 + 4)); | |
77 | ||
78 | for (n = 1; (n < 3) && (*p); n++) | |
79 | { | |
80 | if (*p != c) | |
81 | goto fail; | |
82 | ||
83 | value[ofs + n] = grub_strtoul (p + 1, &p, 10); | |
84 | cur_mask |= (1 << (ofs + n)); | |
85 | } | |
86 | ||
87 | if (*p) | |
88 | goto fail; | |
89 | ||
90 | if ((ofs == 0) && (n == 2)) | |
91 | { | |
92 | value[ofs + 2] = value[ofs + 1]; | |
93 | value[ofs + 1] = value[ofs]; | |
94 | ofs++; | |
95 | cur_mask <<= 1; | |
96 | } | |
97 | ||
98 | for (; n; n--, ofs++) | |
99 | if ((value [ofs] < limit[ofs][0]) || | |
100 | (value [ofs] > limit[ofs][1])) | |
101 | goto fail; | |
102 | ||
103 | mask |= cur_mask; | |
104 | } | |
105 | ||
106 | if (grub_get_datetime (&datetime)) | |
107 | return grub_errno; | |
108 | ||
109 | if (mask & GRUB_DATETIME_SET_YEAR) | |
110 | datetime.year = value[0]; | |
111 | ||
112 | if (mask & GRUB_DATETIME_SET_MONTH) | |
113 | datetime.month = value[1]; | |
114 | ||
115 | if (mask & GRUB_DATETIME_SET_DAY) | |
116 | datetime.day = value[2]; | |
117 | ||
118 | if (mask & GRUB_DATETIME_SET_HOUR) | |
119 | datetime.hour = value[3]; | |
120 | ||
121 | if (mask & GRUB_DATETIME_SET_MINUTE) | |
122 | datetime.minute = value[4]; | |
123 | ||
124 | if (mask & GRUB_DATETIME_SET_SECOND) | |
125 | datetime.second = value[5]; | |
126 | ||
127 | return grub_set_datetime (&datetime); | |
128 | ||
129 | fail: | |
130 | return grub_error (GRUB_ERR_BAD_ARGUMENT, "invalid datetime"); | |
131 | } | |
132 | ||
b1b797cb | 133 | static grub_command_t cmd; |
134 | ||
42ce5170 | 135 | GRUB_MOD_INIT(date) |
136 | { | |
b1b797cb | 137 | cmd = |
138 | grub_register_command ("date", grub_cmd_date, | |
77a79592 | 139 | N_("[[year-]month-day] [hour:minute[:second]]"), |
140 | N_("Command to display/set current datetime.")); | |
42ce5170 | 141 | } |
142 | ||
143 | GRUB_MOD_FINI(date) | |
144 | { | |
b1b797cb | 145 | grub_unregister_command (cmd); |
42ce5170 | 146 | } |