1 /*
2 * compat/compat_uuid.h
3 *
4 * Copyright (C) 2013 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 /* This file is only built under MINGW32 */
26
27 #include <windows.h>
28 #include <stdlib.h>
29 #include <babeltrace/compat/uuid.h>
30
31 /* MinGW does not provide byteswap - implement our own version. */
32 static
swap(unsigned char * ptr,unsigned int i,unsigned int j)33 void swap(unsigned char *ptr, unsigned int i, unsigned int j)
34 {
35 unsigned char tmp;
36
37 tmp = ptr[i];
38 ptr[i] = ptr[j];
39 ptr[j] = tmp;
40 }
41
42 static
fix_uuid_endian(unsigned char * ptr)43 void fix_uuid_endian(unsigned char * ptr)
44 {
45 swap(ptr, 0, 3)
46 swap(ptr, 1, 2)
47 swap(ptr, 4, 5)
48 swap(ptr, 6, 7)
49 }
50
bt_uuid_generate(unsigned char * uuid_out)51 int bt_uuid_generate(unsigned char *uuid_out)
52 {
53 RPC_STATUS status;
54
55 status = UuidCreate((struct UUID *)uuid_out);
56 if (status == RPC_S_OK)
57 return 0;
58 else
59 return -1;
60 }
61
bt_uuid_unparse(const unsigned char * uuid_in,char * str_out)62 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
63 {
64 RPC_STATUS status;
65 unsigned char *alloc_str;
66 int ret;
67 unsigned char copy_of_uuid_in[BABELTRACE_UUID_LEN];
68
69 /* make a modifyable copy of uuid_in */
70 memcpy(copy_of_uuid_in, uuid_in, BABELTRACE_UUID_LEN);
71
72 fix_uuid_endian(copy_of_uuid_in);
73 status = UuidToString((struct UUID *) copy_of_uuid_in, &alloc_str);
74
75 if (status == RPC_S_OK) {
76 strncpy(str_out, (char *) alloc_str, BABELTRACE_UUID_STR_LEN);
77 str_out[BABELTRACE_UUID_STR_LEN - 1] = '\0';
78 ret = 0;
79 } else {
80 ret = -1;
81 }
82 RpcStringFree(&alloc_str);
83 return ret;
84 }
85
bt_uuid_parse(const char * str_in,unsigned char * uuid_out)86 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
87 {
88 RPC_STATUS status;
89
90 status = UuidFromString((unsigned char *) str_in,
91 (struct UUID *) uuid_out);
92 fix_uuid_endian(uuid_out);
93
94 if (status == RPC_S_OK)
95 return 0;
96 else
97 return -1;
98 }
99
bt_uuid_compare(const unsigned char * uuid_a,const unsigned char * uuid_b)100 int bt_uuid_compare(const unsigned char *uuid_a,
101 const unsigned char *uuid_b)
102 {
103 RPC_STATUS status;
104
105 if (!UuidCompare((struct UUID *) uuid_a, (struct UUID *) uuid_b,
106 &status)) {
107 return 0;
108 } else {
109 return -1;
110 }
111 }
112