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# Open Directory

Authenticate users, and search for contact information in Open Directory and LDAP directories.

## Topics

### Classes

[`ODAttributeMap`](/documentation/OpenDirectory/ODAttributeMap)

[`ODConfiguration`](/documentation/OpenDirectory/ODConfiguration)

[`ODContext`](/documentation/OpenDirectory/ODContext)

An Open Directory context type.

[`ODMappings`](/documentation/OpenDirectory/ODMappings)

[`ODModuleEntry`](/documentation/OpenDirectory/ODModuleEntry)

[`ODNode`](/documentation/OpenDirectory/ODNode)

An `ODNode` object serves as a Cocoa wrapper for an Open Directory node.

[`ODNodeRef`](/documentation/OpenDirectory/ODNodeRef)

An Open Directory node type.

[`ODQuery`](/documentation/OpenDirectory/ODQuery)

An `ODQuery` object serves as a Cocoa wrapper for an Open Directory query.

[`ODQueryRef`](/documentation/OpenDirectory/ODQueryRef)

An Open Directory query type.

[`ODRecord`](/documentation/OpenDirectory/ODRecord)

An `ODRecord` object serves as a Cocoa wrapper for an Open Directory record.

[`ODRecordMap`](/documentation/OpenDirectory/ODRecordMap)

[`ODRecordRef`](/documentation/OpenDirectory/ODRecordRef)

An Open Directory record type.

[`ODSession`](/documentation/OpenDirectory/ODSession)

An `ODSession` object serves as a Cocoa wrapper for an Open Directory session.

[`ODSessionRef`](/documentation/OpenDirectory/ODSessionRef)

An Open Directory session type.

### Protocols

[`ODQueryDelegate`](/documentation/OpenDirectory/ODQueryDelegate)

The `ODQueryDelegate` protocol defines methods for receiving results returned from an Open Directory query.

### Structures

[`ODFrameworkErrors`](/documentation/OpenDirectory/ODFrameworkErrors)

### Reference

[OpenDirectory Functions](/documentation/OpenDirectory/opendirectory-functions)

This document describes the functions, constants, and data types used to interact with Open Directory.

[OpenDirectory Enumerations](/documentation/OpenDirectory/opendirectory-enumerations)

[OpenDirectory Constants](/documentation/OpenDirectory/opendirectory-constants)

[OpenDirectory Data Types](/documentation/OpenDirectory/opendirectory-data-types)


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