include/babeltrace/compat/uuid.h

   1 #ifndef _BABELTRACE_COMPAT_UUID_H
   2 #define _BABELTRACE_COMPAT_UUID_H
   3
   4 /*
   5  * babeltrace/compat/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 /* Includes final \0. */
  29 #define BABELTRACE_UUID_STR_LEN         37
  30 #define BABELTRACE_UUID_LEN             16
  31
  32 #ifdef BABELTRACE_HAVE_LIBUUID
  33 #include <uuid/uuid.h>
  34
  35 static inline
  36 int bt_uuid_generate(unsigned char *uuid_out)
  37 {
  38         uuid_generate(uuid_out);
  39         return 0;
  40 }
  41
  42 /* Sun's libuuid lacks const qualifiers */
  43 #if defined(__sun__)
  44 static inline
  45 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  46 {
  47         uuid_unparse((unsigned char *) uuid_in, str_out);
  48         return 0;
  49 }
  50
  51 static inline
  52 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
  53 {
  54         return uuid_parse((char *) str_in, uuid_out);
  55 }
  56
  57 static inline
  58 int bt_uuid_compare(const unsigned char *uuid_a,
  59                 const unsigned char *uuid_b)
  60 {
  61         return uuid_compare((unsigned char *) uuid_a,
  62                 (unsigned char *) uuid_b);
  63 }
  64 #else
  65 static inline
  66 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  67 {
  68         uuid_unparse(uuid_in, str_out);
  69         return 0;
  70 }
  71
  72 static inline
  73 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
  74 {
  75         return uuid_parse(str_in, uuid_out);
  76 }
  77
  78 static inline
  79 int bt_uuid_compare(const unsigned char *uuid_a,
  80                 const unsigned char *uuid_b)
  81 {
  82         return uuid_compare(uuid_a, uuid_b);
  83 }
  84 #endif
  85
  86 #elif defined(BT_HAVE_LIBC_UUID)
  87 #include <uuid.h>
  88 #include <stdint.h>
  89 #include <string.h>
  90 #include <stdlib.h>
  91
  92 static inline
  93 int bt_uuid_generate(unsigned char *uuid_out)
  94 {
  95         uint32_t status;
  96
  97         uuid_create((uuid_t *) uuid_out, &status);
  98         if (status == uuid_s_ok)
  99                 return 0;
 100         else
 101                 return -1;
 102 }
 103
 104 static inline
 105 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
 106 {
 107         uint32_t status;
 108         char *alloc_str;
 109         int ret;
 110
 111         uuid_to_string((uuid_t *) uuid_in, &alloc_str, &status);
 112         if (status == uuid_s_ok) {
 113                 strcpy(str_out, alloc_str);
 114                 ret = 0;
 115         } else {
 116                 ret = -1;
 117         }
 118         free(alloc_str);
 119         return ret;
 120 }
 121
 122 static inline
 123 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
 124 {
 125         uint32_t status;
 126
 127         uuid_from_string(str_in, (uuid_t *) uuid_out, &status);
 128         if (status == uuid_s_ok)
 129                 return 0;
 130         else
 131                 return -1;
 132 }
 133
 134 static inline
 135 int bt_uuid_compare(const unsigned char *uuid_a,
 136                 const unsigned char *uuid_b)
 137 {
 138         uint32_t status;
 139
 140         uuid_compare((uuid_t *) uuid_a, (uuid_t *) uuid_b, &status);
 141         if (status == uuid_s_ok)
 142                 return 0;
 143         else
 144                 return -1;
 145 }
 146
 147 #elif defined(__MINGW32__)
 148
 149 int bt_uuid_generate(unsigned char *uuid_out);
 150 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out);
 151 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out);
 152 int bt_uuid_compare(const unsigned char *uuid_a,
 153                 const unsigned char *uuid_b);
 154
 155 #else
 156 #error "Babeltrace needs to have a UUID generator configured."
 157 #endif
 158
 159 #endif /* _BABELTRACE_COMPAT_UUID_H */