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comp.lang.ruby

ldap with ruby confusion

Cere Davis

7/16/2003 3:49:00 AM


I have this piece of code that I modified based on search.rb in the ldap
package for Ruby.

Something isn't working correctly with this code but I cannot find a way
to get the code to jsut printt regular ldap output instead of only
printing hashes or error messages when an exception is caught. Does
anyone know of a way that I can get just regular output that is similair
to just using the ldapsearch utility?

For example with ldapsearch -x -b 'ou=People, o=University of
Washington, c=US':

I get:
version: 2

#
# filter: (objectclass=*)
# requesting: ALL
#

# search result
search: 2
result: 11 Administrative limit exceeded

# numResponses: 1

A readable error...

Does anyone know how I would get this sort of readable error in Ruby
with the ldap package?

require 'ldap'

HOST="directory.washington.edu"
BASE="ou=People, o=University, c=US"

LDAP::Conn.new(HOST, LDAP::LDAP_PORT).bind{|conn|
conn.perror("bind")
begin
conn.search(BASE,
LDAP::LDAP_SCOPE_SUBTREE,
"(objectclass=*)"
){|e|
p e.keys
}
rescue LDAP::ResultError => msg
$stderr.print(msg)
end
}

Thanks,
Cere
2 Answers

Brian Candler

7/16/2003 8:57:00 AM

0

On Wed, Jul 16, 2003 at 02:25:30PM +0900, Cere Davis wrote:
> For example with ldapsearch -x -b ''ou=People, o=University of
> Washington, c=US'':
>
> I get:
> version: 2
>
> #
> # filter: (objectclass=*)
> # requesting: ALL
> #
>
> # search result
> search: 2
> result: 11 Administrative limit exceeded

Yes, but what server are you sending that query to? (It will be whatever is
in your ldap.conf). If I use the same server as your Ruby example, I get:

$ ldapsearch -h directory.washington.edu -x -b ''ou=People, o=University of Washington, cs=US''
version: 2

#
# filter: (objectclass=*)
# requesting: ALL
#

# search result
search: 2
result: 32 No such object <<<<<

# numResponses: 1

> Does anyone know how I would get this sort of readable error in Ruby
> with the ldap package?

Running your example ruby-ldap program, I get:

bind: Success
No such object <<<<<

which is exactly the same as ldapsearch gives (except ldapsearch includes
the machine-parsable response as well - code 32

#define LDAP_NO_SUCH_OBJECT 0x20

So maybe it would be better if there were an LDAP exception object, or
different exceptions for each LDAP error, but apart from that it appears to
be doing the Right Thing [TM]. You are correctly capturing that result using
rescue.

Cheers,

Brian.

Ian Macdonald

7/16/2003 9:01:00 AM

0

On Wed 16 Jul 2003 at 14:25:30 +0900, Cere Davis wrote:

> I have this piece of code that I modified based on search.rb in the ldap
> package for Ruby.
>
> Something isn''t working correctly with this code but I cannot find a way
> to get the code to jsut printt regular ldap output instead of only
> printing hashes or error messages when an exception is caught. Does
> anyone know of a way that I can get just regular output that is similair
> to just using the ldapsearch utility?
>
> require ''ldap''
>
> HOST="directory.washington.edu"
> BASE="ou=People, o=University, c=US"
>
> LDAP::Conn.new(HOST, LDAP::LDAP_PORT).bind{|conn|
> conn.perror("bind")
> begin
> conn.search(BASE,
> LDAP::LDAP_SCOPE_SUBTREE,
> "(objectclass=*)"
> ){|e|
> p e.keys
> }
> rescue LDAP::ResultError => msg
> $stderr.print(msg)
> end
> }

Try something like this:

#!/usr/bin/ruby -w

require ''ldap''

HOST = ''ldap.corp.foo.com''
BASE = ''ou=People,dc=foo,dc=com''

LDAP::Conn.new(HOST, LDAP::LDAP_PORT).bind do |conn|
begin
conn.search(BASE, LDAP::LDAP_SCOPE_SUBTREE, ''(objectclass=*)'') do |entry|
entry.to_hash.each do |key, values|
values.each do |value|
printf(''%s: %s\n'', key, value)
end
end
puts
end
end
end

That''ll do what you''re looking for, I think.

Ian
--
Ian Macdonald | A committee is a life form with six or more
System Administrator | legs and no brain. -- Lazarus Long, "Time
ian@caliban.org | Enough For Love"
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