[985] in Kerberos-V5-bugs
Correction to code for guessing KDC in unknown realm
tytso@ATHENA.MIT.EDU (tytso@ATHENA.MIT.EDU)
Fri Dec 9 14:09:34 1994
Date: Sat, 3 Dec 1994 13:01:17 -0800
From: Clifford Neuman <bcn@ISI.EDU>
To: bug-kerberos@MIT.EDU
Unfortunately, there was a bug in the module that I sent on 1
december. This is the revised enhancement to the locate_kdc function,
that if included should probably be surrounded by an #ifdef of your
choice.
What it does is it tells the locate_kdc function that if it can not
find the krb.conf file, or if it finds the file but cant find a line
for the requested realm, to make a guess that the KDC for the realm
is:
KERBEROS.<realm-name>
With this in place, you should be able to run clients on hosts that
don't have a configuration file. We made the change to our libraries
because we needed it for our NetCheque software.
---
*** locate_kdc.c.orig Wed Jun 22 12:51:28 1994
--- locate_kdc.c Fri Dec 2 14:02:05 1994
***************
*** 73,82 ****
#endif
hostlist = 0;
! if (code = krb5_get_krbhst (realm, &hostlist))
! return(code);
#ifdef KRB5_USE_INET
if (sp = getservbyname(krb5_kdc_udp_portname, "udp"))
udpport = sp->s_port;
--- 73,106 ----
#endif
hostlist = 0;
! if (code = krb5_get_krbhst (realm, &hostlist)) {
! /* Can't get it from file, let's make it ourselves */
! char tempbuf[BUFSIZ];
! char tempbuf1[BUFSIZ];
!
! register char **rethlist = 0;
! int hlindex = 0;
! int hlsize = 2;
!
! rethlist = (char **)calloc(hlsize, sizeof (*rethlist));
!
! memcpy(tempbuf1, realm->data, realm->length);
! tempbuf1[realm->length] = '\0';
!
! sprintf(tempbuf,"KERBEROS.%s",tempbuf1);
!
! rethlist[0] = strdup(tempbuf);
! if (!rethlist[0]) {
! krb5_xfree(rethlist);
! rethlist = 0;
! return(code);
! }
! rethlist[1] = 0;
! hostlist = rethlist;
! }
!
#ifdef KRB5_USE_INET
if (sp = getservbyname(krb5_kdc_udp_portname, "udp"))
udpport = sp->s_port;
--[0676]--
