Package: libnss-ldap
Version: 261-2.1
Severity: normal
Tags: patch
I noticed that Kerberos keytab support was commented out in the debian/rules
file. When I enabled the feature by enabling the commented line, I found
that this doesn't really help.
Digging further into the code I found the source of the problem to be a
mismatch of the actual and the expected output of the krb5_kt_get_name()
function. The current code expects a file name, whereas the function returns
the name including the 'FILE:' prefix. I wrote a patch to fix the issue.
I use the following configuration in /etc/libnss-ldap.conf
use_sasl yes
krb5_usekeytab 1
krb5_autorenew 1
krb5_keytabname FILE:/etc/krb5.keytab
sasl_auth_id host/<fqdn>@<REALM>
--- nss_ldap-261.orig/ldap-init-krb5-cache.c 2008-07-03 04:32:10.000000000
+0200
+++ nss_ldap-261/ldap-init-krb5-cache.c 2010-03-04 18:04:22.000000000 +0100
@@ -236,9 +236,11 @@
setregid (egid, rgid);
}
krb5_kt_get_name (context, __keytab, buf, KT_PATH_MAX);
+ /* Skip the 'FILE:' prefix*/
+ char *filename = buf + 5;
debug ("==> krb5_cache_kt_is_accessible: kt_get_name gives %s",
- buf);
- code = access (buf, R_OK);
+ filename);
+ code = access (filename, R_OK);
if (ruid != euid)
{
setreuid (ruid, euid);
-- System Information:
Debian Release: 5.0.4
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 2.6.26-2-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages libnss-ldap depends on:
ii debconf [debcon 1.5.24 Debian configuration management sy
ii libc6 2.7-18lenny2 GNU C Library: Shared libraries
ii libcomerr2 1.41.3-1 common error description library
ii libkrb53 1.6.dfsg.4~beta1-5lenny2 MIT Kerberos runtime libraries
ii libldap-2.4-2 2.4.11-1+lenny1 OpenLDAP libraries
ii libsasl2-2 2.1.22.dfsg1-23+lenny1 Cyrus SASL - authentication abstra
Versions of packages libnss-ldap recommends:
pn libpam-ldap <none> (no description available)
ii nscd 2.7-18lenny2 GNU C Library: Name Service Cache
libnss-ldap suggests no packages.
-- debconf information excluded
--
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