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Commit | Line | Data |
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1e0a221b | 1 | /* |
b19d1a95 TT |
2 | * uuid_time.c --- Interpret the time field from a uuid. This program |
3 | * violates the UUID abstraction barrier by reaching into the guts | |
4 | * of a UUID and interpreting it. | |
efc6f628 | 5 | * |
b19d1a95 | 6 | * Copyright (C) 1998, 1999 Theodore Ts'o. |
1e0a221b TT |
7 | * |
8 | * %Begin-Header% | |
1bbfec62 TT |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions | |
11 | * are met: | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, and the entire permission notice in its entirety, | |
14 | * including the disclaimer of warranties. | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in the | |
17 | * documentation and/or other materials provided with the distribution. | |
18 | * 3. The name of the author may not be used to endorse or promote | |
19 | * products derived from this software without specific prior | |
20 | * written permission. | |
efc6f628 | 21 | * |
1bbfec62 TT |
22 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |
24 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF | |
25 | * WHICH ARE HEREBY DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE | |
26 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT | |
28 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR | |
29 | * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
30 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
31 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
32 | * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH | |
33 | * DAMAGE. | |
1e0a221b TT |
34 | * %End-Header% |
35 | */ | |
36 | ||
d1154eb4 TT |
37 | #include "config.h" |
38 | ||
6ec9ef18 TT |
39 | #ifdef _WIN32 |
40 | #define _WIN32_WINNT 0x0500 | |
41 | #include <windows.h> | |
42 | #define UUID MYUUID | |
43 | #endif | |
44 | ||
1e0a221b | 45 | #include <stdio.h> |
6ec9ef18 | 46 | #ifdef HAVE_UNISTD_H |
1e0a221b | 47 | #include <unistd.h> |
6ec9ef18 | 48 | #endif |
1e0a221b TT |
49 | #include <stdlib.h> |
50 | #include <sys/types.h> | |
6ec9ef18 | 51 | #ifdef HAVE_SYS_TIME_H |
1e0a221b | 52 | #include <sys/time.h> |
6ec9ef18 | 53 | #endif |
1e0a221b | 54 | #include <time.h> |
1e0a221b TT |
55 | |
56 | #include "uuidP.h" | |
57 | ||
ce2722f8 | 58 | time_t uuid_time(const uuid_t uu, struct timeval *ret_tv) |
1e0a221b | 59 | { |
1e0a221b | 60 | struct timeval tv; |
6ec9ef18 TT |
61 | struct uuid uuid; |
62 | uint32_t high; | |
63 | uint64_t clock_reg; | |
1e0a221b TT |
64 | |
65 | uuid_unpack(uu, &uuid); | |
efc6f628 | 66 | |
1e0a221b | 67 | high = uuid.time_mid | ((uuid.time_hi_and_version & 0xFFF) << 16); |
6ec9ef18 | 68 | clock_reg = uuid.time_low | ((uint64_t) high << 32); |
1e0a221b | 69 | |
6ec9ef18 | 70 | clock_reg -= (((uint64_t) 0x01B21DD2) << 32) + 0x13814000; |
1e0a221b TT |
71 | tv.tv_sec = clock_reg / 10000000; |
72 | tv.tv_usec = (clock_reg % 10000000) / 10; | |
73 | ||
74 | if (ret_tv) | |
75 | *ret_tv = tv; | |
76 | ||
77 | return tv.tv_sec; | |
78 | } | |
79 | ||
ce2722f8 | 80 | int uuid_type(const uuid_t uu) |
b19d1a95 TT |
81 | { |
82 | struct uuid uuid; | |
83 | ||
efc6f628 | 84 | uuid_unpack(uu, &uuid); |
b19d1a95 TT |
85 | return ((uuid.time_hi_and_version >> 12) & 0xF); |
86 | } | |
87 | ||
ce2722f8 | 88 | int uuid_variant(const uuid_t uu) |
b19d1a95 TT |
89 | { |
90 | struct uuid uuid; | |
91 | int var; | |
92 | ||
efc6f628 | 93 | uuid_unpack(uu, &uuid); |
b19d1a95 TT |
94 | var = uuid.clock_seq; |
95 | ||
96 | if ((var & 0x8000) == 0) | |
97 | return UUID_VARIANT_NCS; | |
98 | if ((var & 0x4000) == 0) | |
99 | return UUID_VARIANT_DCE; | |
100 | if ((var & 0x2000) == 0) | |
101 | return UUID_VARIANT_MICROSOFT; | |
102 | return UUID_VARIANT_OTHER; | |
103 | } | |
104 | ||
1e0a221b | 105 | #ifdef DEBUG |
36caf25f | 106 | static const char *variant_string(int variant) |
b19d1a95 TT |
107 | { |
108 | switch (variant) { | |
109 | case UUID_VARIANT_NCS: | |
110 | return "NCS"; | |
111 | case UUID_VARIANT_DCE: | |
112 | return "DCE"; | |
113 | case UUID_VARIANT_MICROSOFT: | |
114 | return "Microsoft"; | |
115 | default: | |
116 | return "Other"; | |
117 | } | |
118 | } | |
119 | ||
efc6f628 | 120 | |
1e0a221b TT |
121 | int |
122 | main(int argc, char **argv) | |
123 | { | |
124 | uuid_t buf; | |
125 | time_t time_reg; | |
126 | struct timeval tv; | |
b19d1a95 | 127 | int type, variant; |
1e0a221b TT |
128 | |
129 | if (argc != 2) { | |
130 | fprintf(stderr, "Usage: %s uuid\n", argv[0]); | |
131 | exit(1); | |
132 | } | |
133 | if (uuid_parse(argv[1], buf)) { | |
134 | fprintf(stderr, "Invalid UUID: %s\n", argv[1]); | |
135 | exit(1); | |
136 | } | |
b19d1a95 TT |
137 | variant = uuid_variant(buf); |
138 | type = uuid_type(buf); | |
1e0a221b TT |
139 | time_reg = uuid_time(buf, &tv); |
140 | ||
b19d1a95 TT |
141 | printf("UUID variant is %d (%s)\n", variant, variant_string(variant)); |
142 | if (variant != UUID_VARIANT_DCE) { | |
143 | printf("Warning: This program only knows how to interpret " | |
144 | "DCE UUIDs.\n\tThe rest of the output is likely " | |
145 | "to be incorrect!!\n"); | |
146 | } | |
147 | printf("UUID type is %d", type); | |
148 | switch (type) { | |
149 | case 1: | |
150 | printf(" (time based)\n"); | |
151 | break; | |
152 | case 2: | |
153 | printf(" (DCE)\n"); | |
154 | break; | |
155 | case 3: | |
156 | printf(" (name-based)\n"); | |
157 | break; | |
158 | case 4: | |
159 | printf(" (random)\n"); | |
160 | break; | |
161 | default: | |
162 | printf("\n"); | |
163 | } | |
164 | if (type != 1) { | |
165 | printf("Warning: not a time-based UUID, so UUID time " | |
166 | "decoding will likely not work!\n"); | |
167 | } | |
420246cd | 168 | printf("UUID time is: (%ld, %ld): %s\n", (long)tv.tv_sec, (long)tv.tv_usec, |
1e0a221b | 169 | ctime(&time_reg)); |
efc6f628 | 170 | |
1e0a221b TT |
171 | return 0; |
172 | } | |
173 | #endif |