Problems with netscape (and other software) and nss_ldap

[Susanne Benkert <benkerts@emt.iis.fhg.de>]

Hi,

after changing my authentification to use Ldap (Openldap-2.0.18. as
ldap-server) I found out, that some programs are not running correctly
anymore:

1) I can't start xemacs. I always get a "Segmentation fault". strace
shows this error message: "xemacs: option.c:328:ldap_set_option:
Assertion `((ld)-->ld.options.ldo.valid=0x2)` failed"

2) Netscape starts well, but I can't send emails (getting emails works).
This is the error message: "Netscape is unable to use the mail server
because you have not provided a username. Please provide one in the
preferences and try angain."   - but this is nonsense, I provided a
username in my preferences. (Mozilla works fine with the same
configurations.)

Both errors are definatly related with my nss, pam or ldap settings
because if I remove ldap from the nsswitch.conf both programs are
running fine.

Pherhaps there are even more programs involved - I'm still testing.

Is this a known problem? (I found something similar in the archives of
another mailinglist, but there was no real solution.)
What configurations should I use to avoid this problems?

I attached my current configuration ldap.conf and nsswitch.conf. Please
tell me if any additional information (for example my files from pam.d)
is needed.


Thanks for some advise,
Sanne




PS. I know this is a bit off topic, but I already posted this to
nssldap@padl.com and until now nobody could really help me. So I hoped
somebody one this list may have a good idea.


# @(#)$Id: ldap.conf,v 1.24 2001/09/20 14:12:26 lukeh Exp $
#
# This is the configuration file for the LDAP nameservice
# switch library and the LDAP PAM module.
#
# PADL Software
# http://www.padl.com
#
# Your LDAP server. Must be resolvable without using LDAP.
host idserv02.mycompany.de

# The distinguished name of the search base.
base o=mycompany,c=de

# Another way to specify your LDAP server is to provide an
# uri with the server name. This allows to use
# Unix Domain Sockets to connect to a local LDAP Server.
#uri ldap://idserv02.mycompany.de/
uri ldaps://idserv02.mycompany.de   
#uri ldapi://%2fvar%2frun%2fldapi_sock/
# Note: %2f encodes the '/' used as directory separator

# The LDAP version to use (defaults to 3
# if supported by client library)
ldap_version 3

# The distinguished name to bind to the server with.
# Optional: default is to bind anonymously.
#binddn uid=root,o=mycompany,c=de 

# The credentials to bind with. 
# Optional: default is no credential.
#bindpw secret 

# The distinguished name to bind to the server with
# if the effective user ID is root. Password is
# stored in /etc/ldap.secret (mode 600)
#rootbinddn ,o=mycompany,c=de 

# The port.
# Optional: default is 389.
#port 636

# The search scope.
#scope sub
#scope one
#scope base

# Search timelimit
#timelimit 30

# Bind timelimit
#bind_timelimit 30

# Idle timelimit; client will close connections
# (nss_ldap only) if the server has not been contacted
# for the number of seconds specified below.
#idle_timelimit 3600

# Filter to AND with uid=%s
pam_filter objectclass=posixaccount

# The user ID attribute (defaults to uid)
pam_login_attribute uid

# Search the root DSE for the password policy (works
# with Netscape Directory Server)
#pam_lookup_policy yes

# Check the 'host' attribute for access control
# Default is no; if set to yes, and user has no
# value for the host attribute, and pam_ldap is
# configured for account management (authorization)
# then the user will not be allowed to login.
#pam_check_host_attr yes

# Group to enforce membership of
#pam_groupdn cn=PAM,ou=Groups,dc=padl,dc=com

# Group member attribute
#pam_member_attribute uniquemember

# Specify a minium or maximum UID number allowed
#pam_min_uid 0
#pam_max_uid 0

# Template login attribute, default template user
# (can be overriden by value of former attribute
# in user's entry)
#pam_login_attribute userPrincipalName
#pam_template_login_attribute uid
#pam_template_login nobody

# HEADS UP: the pam_crypt, pam_nds_passwd,
# and pam_ad_passwd options are no
# longer supported.

# Do not hash the password at all; presume
# the directory server will do it, if
# necessary. This is the default.
# pam_password clear

# Hash password locally; required for University of
# Michigan LDAP server, and works with Netscape
# Directory Server if you're using the UNIX-Crypt
# hash mechanism and not using the NT Synchronization
# service. 
pam_password crypt

# Remove old password first, then update in
# cleartext. Necessary for use with Novell
# Directory Services (NDS)
# pam_password nds

# Update Active Directory password, by
# creating Unicode password and updating
# unicodePwd attribute.
# pam_password ad

# Use the OpenLDAP password change
# extended operation to update the password.
#pam_password exop

# RFC2307bis naming contexts
# Syntax:
# nss_base_XXX		base?scope?filter
# where scope is {base,one,sub}
# and filter is a filter to be &'d with the
# default filter.
# You can omit the suffix eg:
# nss_base_passwd	ou=People,
# to append the default base DN but this
# may incur a small performance impact.
nss_base_passwd 	ou=Personen,o=mycompany,c=de?one
#nss_base_shadow	ou=Personen,o=mycompany,c=de?one
nss_base_group		ou=Group,o=mycompany,c=de?one
#nss_base_hosts		ou=Hosts,dc=padl,dc=com?one
#nss_base_services	ou=Services,dc=padl,dc=com?one
#nss_base_networks	ou=Networks,dc=padl,dc=com?one
#nss_base_protocols	ou=Protocols,dc=padl,dc=com?one
#nss_base_rpc		ou=Rpc,dc=padl,dc=com?one
#nss_base_ethers	ou=Ethers,dc=padl,dc=com?one
#nss_base_netmasks	ou=Networks,dc=padl,dc=com?ne
#nss_base_bootparams	ou=Ethers,dc=padl,dc=com?one
#nss_base_aliases	ou=Aliases,dc=padl,dc=com?one
#nss_base_netgroup	ou=Netgroup,dc=padl,dc=com?one

# attribute/objectclass mapping
# Syntax:
#nss_map_attribute	rfc2307attribute	mapped_attribute
#nss_map_objectclass	rfc2307objectclass	mapped_objectclass

# configure --enable-nds is no longer supported.
# For NDS now do:
#nss_map_attribute uniqueMember member

# configure --enable-mssfu-schema is no longer supported.
# For MSSFU now do:
#nss_map_objectclass posixAccount User
#nss_map_attribute uid msSFUName
#nss_map_attribute uniqueMember posixMember
#nss_map_attribute userPassword msSFUPassword
#nss_map_attribute homeDirectory msSFUHomeDirectory
#nss_map_objectclass posixGroup Group
#pam_login_attribute msSFUName
#pam_filter objectclass=User
#pam_password ad

# configure --enable-authpassword is no longer supported
# For authPassword support, now do:
#nss_map_attribute userPassword authPassword
#pam_password nds

# For IBM SecureWay support, do:
#nss_map_objectclass posixAccount aixAccount
#nss_map_attribute uid userName
#nss_map_attribute gidNumber gid
#nss_map_attribute uidNumber uid
#nss_map_attribute userPassword passwordChar
#nss_map_objectclass posixGroup aixAccessGroup
#nss_map_attribute cn groupName
#nss_map_attribute uniqueMember member
#pam_login_attribute userName
#pam_filter objectclass=aixAccount
#pam_password clear

# Netscape SDK LDAPS
#ssl on

# Netscape SDK SSL options
#sslpath /etc/ssl/certs/cert7.db

# OpenLDAP SSL mechanism
# start_tls mechanism uses the normal LDAP port, LDAPS typically 636
#ssl start_tls
ssl yes

# OpenLDAP SSL options
# Require and verify server certificate (yes/no)
# Default is "no"
#tls_checkpeer yes

# CA certificates for server certificate verification
# At least one of these are required if tls_checkpeer is "yes"
#tls_cacertfile /tmp/ca.crt
#tls_cacertdir /etc/ssl/certs

# SSL cipher suite
# See man ciphers for syntax
tls_ciphers HIGH:MEDIUM:SSLv2:RSA

# Client certificate and key
# Use these, if your server requires client authentication.
#tls_cert
#tls_key

#pam_crypt local

#
# /etc/nsswitch.conf
#
# An example Name Service Switch config file. This file should be
# sorted with the most-used services at the beginning.
#
# The entry '[NOTFOUND=return]' means that the search for an
# entry should stop if the search in the previous entry turned
# up nothing. Note that if the search failed due to some other reason
# (like no NIS server responding) then the search continues with the
# next entry.
#
# Legal entries are:
#
#	nisplus or nis+		Use NIS+ (NIS version 3)
#	nis or yp		Use NIS (NIS version 2), also called YP
#	dns			Use DNS (Domain Name Service)
#	files			Use the local files
#	db			Use the local database (.db) files
#	compat			Use NIS on compat mode
#	hesiod			Use Hesiod for user lookups
#	[NOTFOUND=return]	Stop searching if not found so far
#

# To use db, put the "db" in front of "files" for entries you want to be
# looked up first in the databases
#
# Example:
#passwd:    db files nisplus nis
#shadow:    db files nisplus nis
#group:     db files nisplus nis

passwd:     files  ldap #nisplus nis 
shadow:     files  ldap #nisplus nis 
group:      files  ldap #nisplus nis 

#hosts:     db files nisplus nis dns
hosts:      files dns #nisplus nis

# Example - obey only what nisplus tells us...
#services:   nisplus [NOTFOUND=return] files
#networks:   nisplus [NOTFOUND=return] files
#protocols:  nisplus [NOTFOUND=return] files
#rpc:        nisplus [NOTFOUND=return] files
#ethers:     nisplus [NOTFOUND=return] files
#netmasks:   nisplus [NOTFOUND=return] files     

bootparams: nisplus [NOTFOUND=return] files

ethers:     files
netmasks:   files
networks:   files
protocols:  files
rpc:        files
services:   files

netgroup:   nisplus

publickey:  nisplus

automount:  files nisplus
aliases:    files nisplus