[6748] in Kerberos
krb4 random key patch for HPs
daemon@ATHENA.MIT.EDU (Dean Guenther - Systems Staff)
Fri Feb 23 12:04:16 1996
To: kerberos@MIT.EDU
Date: Fri, 23 Feb 1996 15:25:48 GMT
From: guenther@unicorn.it.wsu.edu (Dean Guenther - Systems Staff)
Hi, I've just finished updating krb4 on a Hewlett Packard KDC. There was
a problem in that des_init_random_number_generator in
lib/des/new_rnd_key.c makes a call to gethostid. Under HPUX 9.x and
earlier this results in a bad system call. Many thanks to Tai Jin at HP for
providing a fix for HPs! In new_rnd_key.c immediately after the:
#ifndef BSDUNIX
you lose... (aka, you get to implement an analog of this for your
system...)
#else
you should provide the following:
---------------------- cut --------------------------------------------
#ifdef hpux
/*
* gethostid() returns the first available (non-loopback) IP address
* or zero if no address
*/
#ifdef __STDC__
#define _HPUX_SOURCE
#endif /*__STDC__*/
#include <sys/types.h>
#include <sys/socket.h>
#include <net/if.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#ifdef __STDC__
#define VOID void
#else
#define VOID
#endif /*__STDC__*/
unsigned long gethostid(VOID)
{
struct ifconf ifc;
struct ifreq ifreq, *ifr;
unsigned long addr = 0;
int s, n;
char buf[1024];
if ((s = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
return -1;
ifc.ifc_len = sizeof(buf);
ifc.ifc_buf = buf;
if (ioctl(s, SIOCGIFCONF, &ifc) == -1)
return -1;
n = ifc.ifc_len / sizeof(struct ifreq);
for (ifr = ifc.ifc_req; n > 0; --n, ifr++) {
if (ifr->ifr_addr.sa_family != AF_INET)
continue;
ifreq = *ifr;
#if defined(IFF_LOOPBACK)
#define LOOPBACK IFF_LOOPBACK
#else
# if defined(IFF_LOCAL_LOOPBACK)
# define LOOPBACK IFF_LOCAL_LOOPBACK
#endif
#endif
if (ioctl(s, SIOCGIFFLAGS, &ifreq) == 0) {
if (ifreq.ifr_flags & LOOPBACK)
continue;
}
if (ioctl(s, SIOCGIFADDR, &ifreq) == 0) {
addr = ((struct sockaddr_in *)&ifreq.ifr_addr)->sin_addr.s_addr;
break;
}
}
close(s);
return addr;
} /* gethostid */
#endif /* if hpux */
--------------------------- paste -------------------------------
and then inside of des_init_random_number_generator change the
definition of gethostid to this:
#ifndef hpux
int32 gethostid();
#endif
-- Dean
--
Dean Guenther Internet: guenther@wsu.edu
Washington State University AT&T: 509 335-0433
Pullman, WA. 99164-1222 fax: 509 335-0540
