Line data    Source code

       1             : /*
       2             :  * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : #include <config.h>
      34             : 
      35             : #include "roken.h"
      36             : 
      37             : #ifdef HAVE_WIN32_RAND_S
      38             : static int hasRand_s = 1;
      39             : #include "versionsupport.h"
      40             : #endif
      41             : 
      42             : void ROKEN_LIB_FUNCTION
      43         946 : rk_random_init(void)
      44             : {
      45             : #if defined(HAVE_ARC4RANDOM)
      46             :     /* nothing to do */;
      47             : #elif defined(HAVE_SRANDOMDEV)
      48             :     srandomdev();
      49             : #elif defined(HAVE_RANDOM)
      50         946 :     srandom(time(NULL));
      51             : #else
      52             : # ifdef HAVE_WIN32_RAND_S
      53             :         hasRand_s = IsWindowsXPOrGreater();
      54             : # endif
      55             :     srand (time(NULL));
      56             : #endif
      57         946 : }
      58             : 
      59             : #ifdef HAVE_WIN32_RAND_S
      60             : unsigned int ROKEN_LIB_FUNCTION
      61             : rk_random(void)
      62             : {
      63             :     if (hasRand_s) {
      64             :         unsigned int n;
      65             :         int code;
      66             : 
      67             :         code = rand_s(&n);
      68             :         if (code == 0)
      69             :             return n;
      70             :     }
      71             : 
      72             :     return rand();
      73             : }
      74             : #endif