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[babeltrace.git] / include / babeltrace / uuid.h
1 #ifndef _BABELTRACE_UUID_H
2 #define _BABELTRACE_UUID_H
3
4 /*
5 * babeltrace/uuid.h
6 *
7 * Copyright (C) 2011 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
8 *
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
15 *
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
18 *
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
22 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
24 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 */
27
28 #include <config.h>
29
30 /* Includes final \0. */
31 #define BABELTRACE_UUID_STR_LEN 37
32 #define BABELTRACE_UUID_LEN 16
33
34 #ifdef BABELTRACE_HAVE_LIBUUID
35 #include <uuid/uuid.h>
36
37 static inline
38 int babeltrace_uuid_generate(unsigned char *uuid_out)
39 {
40 uuid_generate(uuid_out);
41 return 0;
42 }
43
44 static inline
45 int babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
46 {
47 uuid_unparse(uuid_in, str_out);
48 return 0;
49 }
50
51 static inline
52 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
53 {
54 return uuid_parse(str_in, uuid_out);
55 }
56
57 static inline
58 int babeltrace_uuid_compare(const unsigned char *uuid_a,
59 const unsigned char *uuid_b)
60 {
61 return uuid_compare(uuid_a, uuid_b);
62 }
63
64 #elif defined(BABELTRACE_HAVE_LIBC_UUID)
65 #include <uuid.h>
66 #include <stdint.h>
67 #include <string.h>
68 #include <stdlib.h>
69
70 static inline
71 int babeltrace_uuid_generate(unsigned char *uuid_out)
72 {
73 uint32_t status;
74
75 uuid_create((uuid_t *) uuid_out, &status);
76 if (status == uuid_s_ok)
77 return 0;
78 else
79 return -1;
80 }
81
82 static inline
83 int babeltrace_uuid_unparse(const unsigned char *uuid_in, char *str_out)
84 {
85 uint32_t status;
86 char *alloc_str;
87 int ret;
88
89 uuid_to_string((uuid_t *) uuid_in, &alloc_str, &status);
90 if (status == uuid_s_ok) {
91 strcpy(str_out, alloc_str);
92 ret = 0;
93 } else {
94 ret = -1;
95 }
96 free(alloc_str);
97 return ret;
98 }
99
100 static inline
101 int babeltrace_uuid_parse(const char *str_in, unsigned char *uuid_out)
102 {
103 uint32_t status;
104
105 uuid_from_string(str_in, (uuid_t *) uuid_out, &status);
106 if (status == uuid_s_ok)
107 return 0;
108 else
109 return -1;
110 }
111
112 static inline
113 int babeltrace_uuid_compare(const unsigned char *uuid_a,
114 const unsigned char *uuid_b)
115 {
116 uint32_t status;
117
118 uuid_compare((uuid_t *) uuid_a, (uuid_t *) uuid_b, &status);
119 if (status == uuid_s_ok)
120 return 0;
121 else
122 return -1;
123 }
124
125 #else
126 #error "Babeltrace needs to have a UUID generator configured."
127 #endif
128
129 #endif /* _BABELTRACE_UUID_H */
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