mirror of git://anongit.mindrot.org/openssh.git
113 lines
2.7 KiB
C
113 lines
2.7 KiB
C
/*
|
|
**
|
|
** OpenBSD emulation routines
|
|
**
|
|
** Damien Miller <djm@ibs.com.au>
|
|
**
|
|
** Copyright 1999 Internet Business Solutions
|
|
**
|
|
** Permission is hereby granted, free of charge, to any person
|
|
** obtaining a copy of this software and associated documentation
|
|
** files (the "Software"), to deal in the Software without
|
|
** restriction, including without limitation the rights to use, copy,
|
|
** modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
** of the Software, and to permit persons to whom the Software is
|
|
** furnished to do so, subject to the following conditions:
|
|
**
|
|
** The above copyright notice and this permission notice shall be
|
|
** included in all copies or substantial portions of the Software.
|
|
**
|
|
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
|
** KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
** WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
|
|
** AND NONINFRINGEMENT. IN NO EVENT SHALL DAMIEN MILLER OR INTERNET
|
|
** BUSINESS SOLUTIONS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
|
|
** ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
|
|
** OR OTHER DEALINGS IN THE SOFTWARE.
|
|
**
|
|
** Except as contained in this notice, the name of Internet Business
|
|
** Solutions shall not be used in advertising or otherwise to promote
|
|
** the sale, use or other dealings in this Software without prior
|
|
** written authorization from Internet Business Solutions.
|
|
**
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <unistd.h>
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
|
|
#include "rc4.h"
|
|
#include "xmalloc.h"
|
|
#include "config.h"
|
|
#include "helper.h"
|
|
|
|
#ifndef HAVE_ARC4RANDOM
|
|
|
|
void get_random_bytes(unsigned char *buf, int len);
|
|
|
|
static rc4_t *rc4 = NULL;
|
|
|
|
unsigned int arc4random(void)
|
|
{
|
|
unsigned int r;
|
|
|
|
if (rc4 == NULL)
|
|
arc4random_stir();
|
|
|
|
rc4_getbytes(rc4, (unsigned char *)&r, sizeof(r));
|
|
|
|
return(r);
|
|
}
|
|
|
|
void arc4random_stir(void)
|
|
{
|
|
unsigned char rand_buf[32];
|
|
|
|
if (rc4 == NULL)
|
|
rc4 = xmalloc(sizeof(*rc4));
|
|
|
|
get_random_bytes(rand_buf, sizeof(rand_buf));
|
|
rc4_key(rc4, rand_buf, sizeof(rand_buf));
|
|
}
|
|
|
|
void get_random_bytes(unsigned char *buf, int len)
|
|
{
|
|
int urandom;
|
|
int c;
|
|
|
|
urandom = open("/dev/urandom", O_RDONLY);
|
|
if (urandom == -1)
|
|
{
|
|
fprintf(stderr, "Couldn't open /dev/urandom: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
c = read(urandom, buf, len);
|
|
if (c == -1)
|
|
{
|
|
fprintf(stderr, "Couldn't read from /dev/urandom: %s", strerror(errno));
|
|
exit(1);
|
|
}
|
|
|
|
if (c != len)
|
|
{
|
|
fprintf(stderr, "Short read from /dev/urandom");
|
|
exit(1);
|
|
}
|
|
}
|
|
#endif /* !HAVE_ARC4RANDOM */
|
|
|
|
#ifndef HAVE_SETPROCTITLE
|
|
void setproctitle(const char *fmt, ...)
|
|
{
|
|
/* FIXME */
|
|
}
|
|
#endif /* !HAVE_SETPROCTITLE */
|