src/libs/net/uuid.h

   1 //
   2 // Copyright (C) 2008 Francesco Salvestrini
   3 //
   4 // This program is free software; you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation; either version 2 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License along
  15 // with this program; if not, write to the Free Software Foundation, Inc.,
  16 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17 //
  18
  19 #ifndef LIBS_NET_UUID_H
  20 #define LIBS_NET_UUID_H
  21
  22 #include "config.h"
  23
  24 #include <string>
  25
  26 namespace Net {
  27         class UUID {
  28         public:
  29                 UUID(void);
  30                 ~UUID(void);
  31                 UUID(const std::string & u);
  32
  33                 void     clear(void);
  34
  35                 // Operators
  36                 operator              std::string(void);
  37                 bool                  operator ==(const UUID & rhs);
  38                 UUID &                operator =(const UUID & rhs);
  39                 friend std::ostream & operator <<(std::ostream & stream,
  40                                                  UUID           obj);
  41                 friend std::istream & operator >>(std::istream & stream,
  42                                                  UUID &         obj);
  43
  44                 typedef enum {
  45                         UNKNOWN                     = 0,
  46                         IETF_RFC4122_TIMEBASED      = 1,
  47                         DCE_SECURITY_POSIX_UID      = 2,
  48                         IETF_RFC4122_NAMEBASED_MD5  = 3,
  49                         IETF_RFC4122_RANDOM         = 4,
  50                         IETF_RFC4122_NAMEBASED_SHA1 = 5
  51                 } version_t;
  52
  53         protected:
  54
  55         private:
  56 //   From RFC4122
  57 //
  58 //   The fields are encoded as 16 octets, with the sizes and order of the
  59 //   fields defined above, and with each field encoded with the Most
  60 //   Significant Byte first (known as network byte order).  Note that the
  61 //   field names, particularly for multiplexed fields, follow historical
  62 //   practice.
  63 //
  64 //   0                   1                   2                   3
  65 //    0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
  66 //   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  67 //   |                          time_low                             |
  68 //   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  69 //   |       time_mid                |         time_hi_and_version   |
  70 //   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  71 //   |clk_seq_hi_res |  clk_seq_low  |         node (0-1)            |
  72 //   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  73 //   |                         node (2-5)                            |
  74 //   +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
  75
  76                 struct uuid {
  77                         uint32_t time_low;
  78                         uint16_t time_mid;
  79                         uint16_t time_hi_and_version;
  80                         uint16_t clock_seq;
  81                         uint8_t  node[6];
  82                 } uuid_;
  83
  84                 bool grab_4hex(const std::string &    u,
  85                                std::string::size_type s,
  86                                std::string::size_type e,
  87                                uint16_t &             v);
  88                 bool grab_8hex(const std::string &    u,
  89                                std::string::size_type s,
  90                                std::string::size_type e,
  91                                uint32_t &             v);
  92                 bool grab_12hex(const std::string &    u,
  93                                 std::string::size_type s,
  94                                 std::string::size_type e,
  95                                 uint8_t *              v);
  96         };
  97 };
  98
  99 #endif // LIBS_NET_UUID_H