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 #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 bt_uuid_generate(unsigned char *uuid_out)
  39 {
  40         uuid_generate(uuid_out);
  41         return 0;
  42 }
  43
  44 /* Sun's libuuid lacks const qualifiers */
  45 #if defined(__sun__)
  46 static inline
  47 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  48 {
  49         uuid_unparse((unsigned char *) uuid_in, str_out);
  50         return 0;
  51 }
  52
  53 static inline
  54 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
  55 {
  56         return uuid_parse((char *) str_in, uuid_out);
  57 }
  58
  59 static inline
  60 int bt_uuid_compare(const unsigned char *uuid_a,
  61                 const unsigned char *uuid_b)
  62 {
  63         return uuid_compare((unsigned char *) uuid_a,
  64                 (unsigned char *) uuid_b);
  65 }
  66 #else
  67 static inline
  68 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
  69 {
  70         uuid_unparse(uuid_in, str_out);
  71         return 0;
  72 }
  73
  74 static inline
  75 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
  76 {
  77         return uuid_parse(str_in, uuid_out);
  78 }
  79
  80 static inline
  81 int bt_uuid_compare(const unsigned char *uuid_a,
  82                 const unsigned char *uuid_b)
  83 {
  84         return uuid_compare(uuid_a, uuid_b);
  85 }
  86 #endif
  87
  88 #elif defined(BT_HAVE_LIBC_UUID)
  89 #include <uuid.h>
  90 #include <stdint.h>
  91 #include <string.h>
  92 #include <stdlib.h>
  93
  94 static inline
  95 int bt_uuid_generate(unsigned char *uuid_out)
  96 {
  97         uint32_t status;
  98
  99         uuid_create((uuid_t *) uuid_out, &status);
 100         if (status == uuid_s_ok)
 101                 return 0;
 102         else
 103                 return -1;
 104 }
 105
 106 static inline
 107 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out)
 108 {
 109         uint32_t status;
 110         char *alloc_str;
 111         int ret;
 112
 113         uuid_to_string((uuid_t *) uuid_in, &alloc_str, &status);
 114         if (status == uuid_s_ok) {
 115                 strcpy(str_out, alloc_str);
 116                 ret = 0;
 117         } else {
 118                 ret = -1;
 119         }
 120         free(alloc_str);
 121         return ret;
 122 }
 123
 124 static inline
 125 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out)
 126 {
 127         uint32_t status;
 128
 129         uuid_from_string(str_in, (uuid_t *) uuid_out, &status);
 130         if (status == uuid_s_ok)
 131                 return 0;
 132         else
 133                 return -1;
 134 }
 135
 136 static inline
 137 int bt_uuid_compare(const unsigned char *uuid_a,
 138                 const unsigned char *uuid_b)
 139 {
 140         uint32_t status;
 141
 142         uuid_compare((uuid_t *) uuid_a, (uuid_t *) uuid_b, &status);
 143         if (status == uuid_s_ok)
 144                 return 0;
 145         else
 146                 return -1;
 147 }
 148
 149 #elif defined(__MINGW32__)
 150
 151 int bt_uuid_generate(unsigned char *uuid_out);
 152 int bt_uuid_unparse(const unsigned char *uuid_in, char *str_out);
 153 int bt_uuid_parse(const char *str_in, unsigned char *uuid_out);
 154 int bt_uuid_compare(const unsigned char *uuid_a,
 155                 const unsigned char *uuid_b);
 156
 157 #else
 158 #error "Babeltrace needs to have a UUID generator configured."
 159 #endif
 160
 161 #endif /* _BABELTRACE_COMPAT_UUID_H */