Line data    Source code

       1             : /* Copyright (C) 2013 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. 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             :  * 0 A.D. 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
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : #include "precompiled.h"
      18             : #include "lib/sysdep/sysdep.h"
      19             : #include "ps/CStr.h"
      20             : 
      21           0 : CStr ps_generate_guid(void)
      22             : {
      23             :     // TODO: Ideally this will be guaranteed unique (and verified
      24             :     // cryptographically) since we'll rely on it to identify hosts
      25             :     // and associate them with player controls (e.g. to support
      26             :     // leaving/rejoining in-progress games), and we don't want
      27             :     // a host to masquerade as someone else.
      28             :     // For now, just try to pick a very random number.
      29             : 
      30           0 :     CStr guid;
      31           0 :     for (size_t i = 0; i < 2; ++i)
      32             :     {
      33           0 :         u32 r = 0;
      34           0 :         sys_generate_random_bytes((u8*)&r, sizeof(r));
      35             :         char buf[32];
      36           0 :         sprintf_s(buf, ARRAY_SIZE(buf), "%08X", r);
      37           0 :         guid += buf;
      38             :     }
      39             : 
      40           0 :     return guid;
      41           3 : }