General LDAP Project Notes

LDAP Servers is base module or api module.  General LDAP functions belong in
LDAP Servers.

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Case Sensitivity and Character Escaping in LDAP Modules
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The function ldap_server_massage_text() should be used for dealing with case sensitivity
and character escaping consistently.

The general rule is codified in ldap_server_massage_text() which is:
- escape filter values and attribute values when querying ldap
- use unescaped, lower case attribute names when storing attribute names in arrays (as keys or values), databases, or object properties.
- use unescaped, mixed case attribute values when storing attribute values in arrays (as keys or values), databases, or object properties.

So a filter might be built as follows:

  $username = ldap_server_massage_text($username, 'attr_value', LDAP_SERVER_MASSAGE_QUERY_LDAP)
  $objectclass = ldap_server_massage_text($objectclass, 'attr_value', LDAP_SERVER_MASSAGE_QUERY_LDAP)
  $filter = "(&(cn=$username)(objectClass=$objectclass))";


The following functions are also available:
ldap_pear_escape_dn_value()
ldap_pear_unescape_dn_value()
ldap_pear_unescape_filter_value()
ldap_pear_unescape_filter_value()


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common variables used in ldap_* and their structures
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!Structure of $ldap_user and $ldap_entry are different!

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$ldap_user
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@see LdapServer::userUserNameToExistingLdapEntry() return

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$ldap_entry and $ldap_*_entry.
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@see LdapServer::ldap_search() return array


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$user_attr_key
key of form <attr_type>.<attr_name>[:<instance>] such as field.lname, property.mail, field.aliases:2
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