freebsd-dev/usr.sbin/pppd/magic.c
Peter Wemm b6633f4571 *gulp* First pass at merging in ppp-2.3.0's pppd. (this has
dial-on-demand, packet filtering, idle timeouts, etc).  The IPX support
is pretty much there but more work needs to be done in sys-bsd.c for
the interface ioctls (Linux has a very different way of configuring IPX
interfaces).

Along the way some things have temporarily been lost due to very messy
conflicts.  I will recover them shortly when I can think clearer.
The main one is the local:remote address override in pap-secrets and
chap-secrets.  Some other home-grown features (dns1,dns2) have been
implemented differently.  Microsoft's chap client auth hacks have been
implemented.  There are bound to be more rough edges...  The changes for
connect-max-retries doesn't fit well with the dial-on-demand code.
1997-08-19 17:52:48 +00:00

88 lines
1.8 KiB
C

/*
* magic.c - PPP Magic Number routines.
*
* Copyright (c) 1989 Carnegie Mellon University.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that the above copyright notice and this paragraph are
* duplicated in all such forms and that any documentation,
* advertising materials, and other materials related to such
* distribution and use acknowledge that the software was developed
* by Carnegie Mellon University. The name of the
* University may not be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static char rcsid[] = "$Id$";
#endif
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/time.h>
#include "pppd.h"
#include "magic.h"
extern long mrand48 __P((void));
extern void srand48 __P((long));
/*
* magic_init - Initialize the magic number generator.
*
* Attempts to compute a random number seed which will not repeat.
* The current method uses the current hostid, current process ID
* and current time, currently.
*/
void
magic_init()
{
long seed;
struct timeval t;
gettimeofday(&t, NULL);
seed = gethostid() ^ t.tv_sec ^ t.tv_usec ^ getpid();
srand48(seed);
}
/*
* magic - Returns the next magic number.
*/
u_int32_t
magic()
{
return (u_int32_t) mrand48();
}
#ifdef NO_DRAND48
/*
* Substitute procedures for those systems which don't have
* drand48 et al.
*/
double
drand48()
{
return (double)random() / (double)0x7fffffffL; /* 2**31-1 */
}
long
mrand48()
{
return random();
}
void
srand48(seedval)
long seedval;
{
srandom((int)seedval);
}
#endif