Uli Kleemann wrote:

Hello my fellow openldap friends,

I've installed openldap 2.4 on debian lenny usinf the Debian packages slapd and ldap-utils. For Authentification I would like to use sasl simple-bind but if I try e.g:

ldapsearch -D "cn=admin,dc=lug-saar,dc=spc" -W -d 255 respectively

ldapsearch -D "cn=Manager,dc=lug-saar,dc=de" -W -d 255

I got: ldap_sasl_interactive_bind_s: Invalid credentials (49)

As I couldn't find the Error using google yet, but getting as more confused

as more HOWTOS I read here is

Any HOWTOs you read were most likely wrong. Please list them for us so we can contact their authors and/or blacklist them on our FAQ. It's time we at least tried to put an end to the misinformation out there.

Read the OpenLDAP Admin Guide instead. Pay attention especially to the section on SASL Identities and mapping them to LDAP DNs.

SASL Binds do not use a DN in the Bind request, therefore you don't need the -D option (and anything you provide there is ignored by the server).

You specified "cn=Manager" above but in your slapd.conf below you defined "cn=root" for the rootdn. So even if you successfully told SASL which DN to use, you were telling it the wrong name. (Academic of course, given the other problems.)

You specified the rootpw twice, once in plaintext and once as an SSHA hash. The rootpw directive only accepts one value, and subsequent instances will simply replace prior ones. So your "rootpw secret" directive has no effect.

For SASL Binds based on passwords, slapd must have access to the plaintext of the password, so your SSHA hash will not work.

If you want to be able to SASL Bind to you your rootdn identity you're going to need to use an authz-regexp statement to map the SASL name to the proper DN.

my ldap.conf:

# # LDAP Defaults #

# See ldap.conf(5) for details # This file should be world readable but not world writable.

BASE dc=lug-saar,dc=de #URI ldap://ldap.lug-saar.de URI ldap://192.168.199.159 ldap_version 3 #SIZELIMIT 12 #TIMELIMIT 15

#DEREF never

my slapd.conf

# This is the main slapd configuration file. See slapd.conf(5) for more # info on the configuration options.

####################################################################### # Global Directives:

# Features to permit #allow bind_v2

# Schema and objectClass definitions include /etc/ldap/schema/core.schema include /etc/ldap/schema/cosine.schema include /etc/ldap/schema/nis.schema include /etc/ldap/schema/inetorgperson.schema

# Where the pid file is put. The init.d script # will not stop the server if you change this. pidfile /var/run/slapd/slapd.pid

# List of arguments that were passed to the server argsfile /var/run/slapd/slapd.args

# Read slapd.conf(5) for possible values loglevel none

# Where the dynamically loaded modules are stored modulepath /usr/lib/ldap moduleload back_hdb

# The maximum number of entries that is returned for a search operation sizelimit 500

# The tool-threads parameter sets the actual amount of cpu's that is used # for indexing. tool-threads 1

# Specific Backend Directives for hdb: # Backend specific directives apply to this backend until another # 'backend' directive occurs backend hdb

####################################################################### # Specific Backend Directives for 'other': # Backend specific directives apply to this backend until another # 'backend' directive occurs #backend<other>

####################################################################### # Specific Directives for database #1, of type hdb: # Database specific directives apply to this databasse until another # 'database' directive occurs database hdb

# The base of your directory in database #1 suffix "dc=lug-saar,dc=de"

# rootdn directive for specifying a superuser on the database. This is needed # for syncrepl. rootdn "cn=root,dc=lug-saar,dc=de" rootpw secret rootpw {SSHA}Jh+[3]GpYm86f7E0ierBIQJhnN/gKmx # Where the database file are physically stored for database #1 directory "/var/lib/ldap"

# The dbconfig settings are used to generate a DB_CONFIG file the first # time slapd starts. They do NOT override existing an existing DB_CONFIG # file. You should therefore change these settings in DB_CONFIG directly # or remove DB_CONFIG and restart slapd for changes to take effect.

# For the Debian package we use 2MB as default but be sure to update this # value if you have plenty of RAM dbconfig set_cachesize 0 2097152 0

# Sven Hartge reported that he had to set this value incredibly high # to get slapd running at all. See http://bugs.debian.org/303057 for more # information.

# Number of objects that can be locked at the same time. dbconfig set_lk_max_objects 1500 # Number of locks (both requested and granted) dbconfig set_lk_max_locks 1500 # Number of lockers dbconfig set_lk_max_lockers 1500

# Indexing options for database #1 index objectClass eq

# Save the time that the entry gets modified, for database #1 lastmod on

# Checkpoint the BerkeleyDB database periodically in case of system # failure and to speed slapd shutdown. checkpoint 512 30

# Where to store the replica logs for database #1 # replogfile /var/lib/ldap/replog

# The userPassword by default can be changed # by the entry owning it if they are authenticated. # Others should not be able to see it, except the # admin entry below # These access lines apply to database #1 only access to attrs=userPassword,shadowLastChange by dn="cn=root,dc=lug-saar,dc=de" write by anonymous auth by self write by * none

# Ensure read access to the base for things like # supportedSASLMechanisms. Without this you may # have problems with SASL not knowing what # mechanisms are available and the like. # Note that this is covered by the 'access to *' # ACL below too but if you change that as people # are wont to do you'll still need this if you # want SASL (and possible other things) to work # happily. access to dn.base="" by * read

# The admin dn has full write access, everyone else # can read everything. access to * by dn="cn=root,dc=lug-saar,dc=de" write by * read

# For Netscape Roaming support, each user gets a roaming # profile for which they have write access to #access to dn=".*,ou=Roaming,o=morsnet" # by dn="cn=root,dc=lug-saar,dc=de" write # by dnattr=owner write

####################################################################### # Specific Directives for database #2, of type 'other' (can be hdb too): # Database specific directives apply to this databasse until another # 'database' directive occurs #database<other>

# The base of your directory for database #2

#suffix "dc=debian,dc=org"

The schema and ldif files I put into /etc/ldap/schema

What did I do wrong? Thanks in advance.

Michael Ströder wrote:

Howard Chu wrote:

...

SASL Binds do not use a DN in the Bind request, therefore you don't need the -D option (and anything you provide there is ignored by the server).

Hmm, since this issue is raised quite often how about handle this more clearly?

If -D is only appropriate for simple bind the command-line tools could check whether -D is used and then give a hint that -x is to be used. Or simply imply simple bind automagically. Same for -U. etc.

Maybe I'm missing something.

Good idea. No one ever suggested it before. Will you submit an ITS?

Kurt Zeilenga wrote:

On Oct 17, 2008, at 5:03 AM, Michael Ströder wrote:

...

Howard Chu wrote:

...

SASL Binds do not use a DN in the Bind request, therefore you don't need the -D option (and anything you provide there is ignored by the server).

Hmm, since this issue is raised quite often how about handle this more clearly?

If -D is only appropriate for simple bind the command-line tools could check whether -D is used and then give a hint that -x is to be used. Or simply imply simple bind automagically. Same for -U. etc.

Maybe I'm missing something.

There are cases where a client might desire to send a bind DN with a SASL password. The protocol specification does not preclude this. The (new) protocol specification does say servers are to ignore any bind DN presented, but IIRC some don't ignore it.

I would suggest that specifying simple Bind arguments when SASL is selected (by lack of -x) only lead to a warning, not an error (unless there is an override flag).

Filed ITS#5753 which trys to make it possible to explicitly specify -D together with SASL bind but still assume -x (simple bind) automagically for a single -D.

Ciao, Michael.