LDAP simple bind

[Shelley Waltz]

I am still having an issue trying to use LDAP authentication
with a simple bind.

I have
[root at roadrunner ~]# rpm -qa|grep sasl
cyrus-sasl-lib-2.1.22-4
cyrus-sasl-2.1.22-4
cyrus-sasl-devel-2.1.22-4
cyrus-sasl-plain-2.1.22-4
cyrus-sasl-ldap-2.1.22-4
cyrus-sasl-md5-2.1.22-4
[root at roadrunner ~]# rpm -qa|grep openldap
openldap-clients-2.3.27-8.el5_1.1
openldap-2.3.27-8.el5_1.1
openldap-servers-2.3.27-8.el5_1.1
openldap-devel-2.3.27-8.el5_1.1

and the the following configuration

/etc/slapd.conf
#
# See slapd.conf(5) for details on configuration options.
# This file should NOT be world readable.
#
include         /etc/openldap/schema/core.schema
include         /etc/openldap/schema/cosine.schema
include         /etc/openldap/schema/inetorgperson.schema
include         /etc/openldap/schema/cabm-person.schema
include         /etc/openldap/schema/nis.schema
#include                /etc/openldap/slapd.acls

# Allow LDAPv2 client connections.  This is NOT the default.
allow bind_v2

# Do not enable referrals until AFTER you have a working directory
# service AND an understanding of referrals.
#referral       ldap://root.openldap.org

pidfile         /var/run/openldap/slapd.pid
argsfile        /var/run/openldap/slapd.args

# Load dynamic backend modules:
# modulepath    /usr/lib/openldap
# moduleload    back_bdb.la
# moduleload    back_ldap.la
# moduleload    back_ldbm.la
# moduleload    back_passwd.la
# moduleload    back_shell.la

# The next three lines allow use of TLS for encrypting connections using a
# dummy test certificate which you can generate by changing to
# /etc/pki/tls/certs, running "make slapd.pem", and fixing permissions on
# slapd.pem so that the ldap user or group can read it.  Your client 
software
# may balk at self-signed certificates, however.
TLSCACertificateFile /etc/pki/tls/certs/ca-bundle.crt
TLSCertificateFile /etc/pki/tls/certs/slapdcert.pem
TLSCertificateKeyFile /etc/pki/tls/certs/slapdkey.pem

# Sample security restrictions
#       Require integrity protection (prevent hijacking)
#       Require 112-bit (3DES or better) encryption for updates
#       Require 63-bit encryption for simple bind
# security ssf=1 update_ssf=112 simple_bind=64

# Sample access control policy:
#       Root DSE: allow anyone to read it
#       Subschema (sub)entry DSE: allow anyone to read it
#       Other DSEs:
#               Allow self write access
#               Allow authenticated users read access
#               Allow anonymous users to authenticate
#       Directives needed to implement policy:
#access to dn.base="" by * read
#access to dn.base="cn=Subschema" by * read
#access to *
#       by self write
#       by users read
#       by anonymous auth
#
# if no access controls are present, the default policy
# allows anyone and everyone to read anything but restricts
# updates to rootdn.  (e.g., "access to * by * read")
#
# rootdn can always read and write EVERYTHING!

#######################################################################
# ldbm and/or bdb database definitions
#######################################################################

database        bdb
suffix          "dc=cabm.rutgers,dc=edu"
rootdn          "cn=roadrunner.cabm.rutgers.edu,dc=cabm.rutgers,dc=edu"
checkpoint      1024 30
# Cleartext passwords, especially for the rootdn, should
# be avoided.  See slappasswd(8) and slapd.conf(5) for details.
# Use of strong authentication encouraged.
# rootpw                secret
# rootpw                {crypt}ijFYNcSNctBYg
rootpw          {MD5}s1VGPKQuI+rRKYM1jtPp+g==
password-hash   {CRYPT}
password-crypt-salt-format     "$1$%s

# The database directory MUST exist prior to running slapd AND
# should only be accessible by the slapd and slap tools.
# Mode 700 recommended.
directory       /var/lib/ldap

# Indices to maintain for this database
index objectClass                       eq,pres
index ou,cn,mail,surname,givenname      eq,pres,sub
index uidNumber,gidNumber,loginShell    eq,pres
index uid,memberUid                     eq,pres,sub
index nisMapName,nisMapEntry            eq,pres,sub


/etc/saslauthd.conf
ldap_servers: ldap://localhost/
ldap_version: 3
ldap_timeout: 10
ldap_timelimit: 10
ldap_cache_ttl: 30
ldap_cache_mem: 32768
ldap_restart: yes
ldap_scope: sub
ldap_search_base: dc=cabm.rutgers,dc=edu
ldap_auth_method: bind
ldap_bind_dn: cn=roadrunner.cabm.rutgers.edu,dc=cabm.rutgers,dc=edu
ldap_password: {MD5}s1VGPKQuI+rRKYM1jtPp+g==
ldap_filter: mail=%u
ldap_debug: 128
ldap_verbose: 1
ldap_ssl: no

I have a similar configuration running with much older versions of 
openldap/sasl.

The objective is to have my imapd/smtp server autheticate users
using uid/userPassword from my LDAP database in PLAINTEXT with TLS.
The uid in my LDAP database is simple the username without any domain
attached.  The userPassword is in {CRYPT} in the LDAP database.

I have the certificates installed and working and an ldapsearch

ldapsearch -x -W -ZZ -b 'dc=cabm.rutgers,dc=edu' -H ldap:/// -D 
'cn=roadrunner.cabm.rutgers.edu,dc=cabm.rutgers,dc=edu' '(objectclass=*)'

asks for the rootdn password and produces the listing.

When I try the testsaslauthd with a uid/userPassword from my LDAP databse,
however, the authentication fails ...

testsaslauthd -u shelley -p mypassword
0: NO "authentication failed"

and in /var/log/secure ...
Dec  4 09:56:18 roadrunner saslauthd[6164]: Authentication failed for 
shelley: Bind to ldap server failed (invalid user/password or insufficient 
access) (-7)
Dec  4 09:56:18 roadrunner saslauthd[6164]: do_auth         : auth 
failure: [user=shelley] [service=imap] [realm=] [mech=ldap] 
[reason=Unknown]

and in the debug from -d 128  ldap log ...
=> access_allowed: auth access to 
"cn=roadrunner.cabm.rutgers.edu,dc=cabm.rutgers,dc=edu" "userPassword" 
requested
=> access_allowed: backend default auth access granted to "(anonymous)"

I allowed the default acls for LDAP, which should allow the rootdn to bind
and verify the password.

What is the issue here, the ldap_filter?  I do not have virtual domains,
just a single domain.  I have the following in
/etc/imapd.conf
[root at roadrunner etc]# cat /etc/imapd.conf
configdirectory: /var/lib/imap
partition-default: /var/spool/imap
admins: cyrus
sievedir: /var/lib/imap/sieve
sendmail: /usr/sbin/sendmail
hashimapspool: true
allowplaintext: yes
sasl_pwcheck_method: saslauthd
sasl_mech_list: PLAIN
tls_cert_file: /etc/pki/cyrus-imapd/cyrus-imapd.pem
tls_key_file: /etc/pki/cyrus-imapd/cyrus-imapd.pem
tls_ca_file: /etc/pki/tls/certs/ca-bundle.crt

S.Waltz