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From Markus Pohle <apacheds.us...@webunity.de>
Subject [TwixEncoder] :: delivers different PDUs for same search result on different operating systems
Date Wed, 25 Jul 2007 12:27:02 GMT
Hi list-users,

I do have problem with my content management system working with 
apacheds on a windows 2003 server installation.

My content management system (coremmedia 2005) tries to identify each 
user by ldap request against apacheds 1.5.x ldap server.

What I found out is, that the ldap request against an apacheds-1.5.x on 
a windows 2003 server system isnt successful, while the same request 
against a centos 4.3 or fedora 7 apacheds-1.5.x installation is successful.

How did I find that out? Well, I configured my CMS to connect against 
apacheds-1.5.x on a windows 2003 server, where apacheds logs are in 
debug mode. Then I tried to load CMS startpage, which is not successful. 
Then I did the same with CMS connected against apacheds-1.5.x running on 
centos 4.3 with logfiles in debug mode. Now the startpage was loaded.

I then searched thru the logfiles and found out the following:

- the search request from CMS is always the following:

[19:48:34] DEBUG [org.apache.directory.shared.ldap.codec.TwixDecoder] - 
Decoded LdapMessage : LdapMessage
     message Id : 2
     Search Request
         Base Object : 'cn=users,cn=cms,dc=APPLICATIONS,dc=DOUGLASHOLDING'
         Scope : whole subtree
         Deref Aliases : deref Always
         Size Limit : no limit
         Time Limit : no limit
         Types Only : false
         Filter : '(&(objectClass=inetOrgPerson)(uid=Jeder))'
         Attributes : uid, mail, sn, cn, givenname, objectClass
     Control
         Control type : '2.16.840.1.113730.3.4.2'
         Criticality : 'false'

[19:48:34] DEBUG 
[org.apache.directory.shared.ldap.codec.TwixTransformer] - Transforming 
LdapMessage <2, SEARCH_REQUEST> from Twix to Snickers.
[19:48:34] DEBUG 
[org.apache.directory.server.ldap.support.SearchHandler] - Message 
received:      SearchRequest
         baseDn : 'cn=users,cn=cms,dc=APPLICATIONS,dc=DOUGLASHOLDING'
         filter : '(& (objectClass=inetOrgPerson) (uid=Jeder) ) '
         scope : whole subtree
         typesOnly : false
no limit
         Time Limit : no limit
         Deref Aliases : deref Always
         attributes : 'uid', 'mail', 'sn', 'cn', 'givenname', 'objectClass'

- the search result is the same on both systems:

[19:48:34] DEBUG 
[org.apache.directory.shared.ldap.codec.TwixTransformer] - Transformed 
message : LdapMessage
     message Id : 2
     Search Result Entry
         Object Name : 
'0.9.2342.19200300.100.1.1=jeder,2.5.4.3=users,0.9.2342.19200300.100.1.25=verwaltung,0.9.2342.19200300.100.1.25=douglasholding'
         Attributes
             Attributes
             Attribute id : 'uid',  Values : ['Jeder']
             Attribute id : 'sn',  Values : ['Jeder']
             Attribute id : 'cn',  Values : ['Jeder']
             Attribute id : 'objectClass',  Values : 
['organizationalPerson', 'person', 'inetOrgPerson', 'top']

[19:48:34] DEBUG [org.apache.directory.shared.ldap.codec.TwixEncoder] - 
Encoding this LdapMessage : LdapMessage
     message Id : 2
     Search Result Entry
         Object Name : 
'0.9.2342.19200300.100.1.1=jeder,2.5.4.3=users,0.9.2342.19200300.100.1.25=verwaltung,0.9.2342.19200300.100.1.25=douglasholding'
         Attributes
             Attributes
             Attribute id : 'uid',  Values : ['Jeder']
             Attribute id : 'sn',  Values : ['Jeder']
             Attribute id : 'cn',  Values : ['Jeder']
             Attribute id : 'objectClass',  Values : 
['organizationalPerson', 'person', 'inetOrgPerson', 'top']

But the next line in debug log which contains the Encoded PDU differs 
from windows 2003 server to centos43.

The windows 2003 encoded PDU looks like this:

[19:48:34] DEBUG [org.apache.directory.shared.ldap.codec.TwixEncoder] - 
Encoded PDU : 0x30 0x81 0xAD 0x02 0x01 0x02 0x64 0x81 0xA7 0x04 0x32 
0x75 0x69 0x64 0x3D 0x4A 0x65 0x64 0x65 0x72 0x2C 0x63 0x6E 0x3D 0x75 
0x73 0x65 0x72 0x
73 0x2C 0x64 0x63 0x3D 0x56 0x45 0x52 0x57 0x41 0x4C 0x54 0x55 0x4E 0x47 
0x2C 0x64 0x63 0x3D 0x44 0x4F 0x55 0x47 0x4C 0x41 0x53 0x48 0x4F 0x4C 
0x44 0x49 0x4E 0x47 0x30 0x71 0x30 0x0E 0x04 0x03 0x75 0x69 0x64 0x31 
0x07 0x04 0x05
0x4A 0x65 0x64 0x65 0x72 0x30 0x0D 0x04 0x02 0x73 0x6E 0x31 0x07 0x04 
0x05 0x4A 0x65 0x64 0x65 0x72 0x30 0x0D 0x04 0x02 0x63 0x6E 0x31 0x07 
0x04 0x05 0x4A 0x65 0x64 0x65 0x72 0x30 0x41 0x04 0x0B 0x6F 0x62 0x6A 
0x65 0x63 0x74 0x4
3 0x6C 0x61 0x73 0x73 0x31 0x32 0x04 0x14 0x6F 0x72 0x67 0x61 0x6E 0x69 
0x7A 0x61 0x74 0x69 0x6F 0x6E 0x61 0x6C 0x50 0x65 0x72 0x73 0x6F 0x6E 
0x04 0x06 0x70 0x65 0x72 0x73 0x6F 0x6E 0x04 0x0D 0x69 0x6E 0x65 0x74 
0x4F 0x72 0x67 0
x50 0x65 0x72 0x73 0x6F 0x6E 0x04 0x03 0x74 0x6F 0x70

The centos43 encoded PDU looks like this:

[10:26:02] DEBUG [org.apache.directory.shared.ldap.codec.TwixEncoder] - 
Encoded PDU : 0x30 0x81 0xB0 0x02 0x01 0x02 0x64 0x81 0xAA 0x04 0x35 
0x75 0x69 0x64 0x3D 0x4A 0x65 0x64 0x65 0x72 0x2C 0x20 0x63 0x6E 0x3D 
0x75 0x73 0x65 0x
72 0x73 0x2C 0x20 0x64 0x63 0x3D 0x56 0x45 0x52 0x57 0x41 0x4C 0x54 0x55 
0x4E 0x47 0x2C 0x20 0x64 0x63 0x3D 0x44 0x4F 0x55 0x47 0x4C 0x41 0x53 
0x48 0x4F 0x4C 0x44 0x49 0x4E 0x47 0x30 0x71 0x30 0x0D 0x04 0x02 0x73 
0x6E 0x31 0x07
0x04 0x05 0x4A 0x65 0x64 0x65 0x72 0x30 0x41 0x04 0x0B 0x6F 0x62 0x6A 
0x65 0x63 0x74 0x43 0x6C 0x61 0x73 0x73 0x31 0x32 0x04 0x06 0x70 0x65 
0x72 0x73 0x6F 0x6E 0x04 0x14 0x6F 0x72 0x67 0x61 0x6E 0x69 0x7A 0x61 
0x74 0x69 0x6F 0x6
E 0x61 0x6C 0x50 0x65 0x72 0x73 0x6F 0x6E 0x04 0x0D 0x69 0x6E 0x65 0x74 
0x4F 0x72 0x67 0x50 0x65 0x72 0x73 0x6F 0x6E 0x04 0x03 0x74 0x6F 0x70 
0x30 0x0D 0x04 0x02 0x63 0x6E 0x31 0x07 0x04 0x05 0x4A 0x65 0x64 0x65 
0x72 0x30 0x0E 0
x04 0x03 0x75 0x69 0x64 0x31 0x07 0x04 0x05 0x4A 0x65 0x64 0x65 0x72


Putting this two PDU strings in a small program that converts that hex 
strings to readable char string delivers the following:

Windows 2003 Server:
0°dª5uid=Jeder, cn=users, dc=VERWALTUNG, 
dc=DOUGLASHOLDING0q0 
sn1Jeder0AobjectClass12personorganizationalPerson 
inetOrgPersontop0 cn1Jeder0uid1Jeder

CentOs 4.3:
0­d§2uid=Jeder,cn=users,dc=VERWALTUNG,dc=DOUGLASHOLDING0q0uid1Jeder0 
sn1Jeder0 
cn1Jeder0AobjectClass12organizationalPersonperson 
inetOrgPersontop


My question is: what makes the difference? Where is the mistake? Where 
is my mistake? What can I do? Is it a bug?

Any tips and hints are really appreciated. If neccessary, I can send 
server.xml and logfiles from both servers, or whatever is needed.

Thanks in advance,
Markus


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