Directory Services


The DsUnquoteRdnValue function is a client call that converts a quoted RDN value back to an unquoted RDN value. Since the RDN was originally put into quotes because it contained characters that could be misinterpreted when it was embedded within a distinguished name (DN), the unquoted RDN value should not be submitted as part of a DN to the directory service using various APIs such as LDAP.

DWORD DsUnquoteRdnValue(
  DWORD cQuotedRdnValueLength,
  LPCTCH psQuotedRdnValue,
  DWORD* pcUnquotedRdnValueLength,
  LPTCH psUnquotedRdnValue


[in] The number of characters in the psQuotedRdnValue string.
[in] The RDN value that may be quoted and escaped.
[in, out] The input value for this argument is the maximum length of psUnquotedRdnValue, in chars

The output value for this argument includes the following flags:

Value Meaning
ERROR_SUCCESS This is returned if the number of characters match the string used in psUnquotedRdnValue.
ERROR_BUFFER_OVERFLOW This is returned if the number of characters do not match the string used in psUnquotedRdnValue.
[out] The converted, unquoted RDN value.

Return Values

The following list contains the possible values that are returned for the DsUnquoteRdnValue function:

Return Code Description
ERROR_SUCCESS If successful, the psUnquotedRdnValue argument contains the unquoted and unescaped version of psQuotedRdnValue. The pcUnquotedRdnValueLength parameter contains the length of the character string.
ERROR_BUFFER_OVERFLOW Indicates an inconsistency between the length of the character string given in psUnquotedRdnValueLength and the number of characters in the output for psUnquotedRdnValue.
ERROR_INVALID_PARAMETER Indicates that there is an invalid parameter.
ERROR_NOT_ENOUGH_MEMORY Indicates that there is an allocation error.


When psQuotedRdnValue is quoted:

The following actions are taken when psQuotedRdnValue is unquoted:

The following actions are always taken:


Client: Included in Windows XP and Windows 2000 Professional.
Server: Included in Windows Server 2003 and Windows 2000 Server.
Redistributable: Requires Active Directory Client Extension on Windows NT 4.0 SP6a and Windows 95/98/Me.
Unicode: Implemented as Unicode and ANSI versions on Windows NT/2000/XP.
Header: Declared in Ntdsapi.h.
Library: Use Ntdsapi.lib.

See Also

DsQuoteRdnValue, Domain Controller and Replication Management Functions