b8d967ede5
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@16480 ec53bebd-3082-4978-b11e-865c3cabbd6b
77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
/*
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* Copyright (c) 2006 Kungliga Tekniska Högskolan
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* (Royal Institute of Technology, Stockholm, Sweden).
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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RCSID("$Id$");
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#include <stdio.h>
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#include <stdlib.h>
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#include <rand.h>
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#include <roken.h>
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int
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RAND_bytes(void *outdata, size_t size)
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{
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static const char *rnd_devices[] = {
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"/dev/random",
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"/dev/srandom",
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"/dev/urandom",
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"/dev/arandom",
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NULL
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};
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const char **p;
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for(p = rnd_devices; *p; p++) {
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int fd = open(*p, O_RDONLY | O_NDELAY);
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if(fd >= 0 && read(fd, outdata, size) == size) {
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close(fd);
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return 1;
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}
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close(fd);
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}
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abort();
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}
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int
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RAND_pseudo_bytes(void *outdata, size_t num)
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{
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return RAND_bytes(outdata, num);
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}
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