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LookupAccountName info  Overview  Group

The LookupAccountName function accepts the name of a system and an account as input. It retrieves a security identifier (SID) for the account and the name of the domain on which the account was found.

BOOL LookupAccountName(

    LPCTSTR lpSystemName,

// address of string for system name

    LPCTSTR lpAccountName,

// address of string for account name

    PSID Sid,

// address of security identifier

    LPDWORD cbSid,

// address of size of security identifier

    LPTSTR ReferencedDomainName,

// address of string for referenced domain

    LPDWORD cbReferencedDomainName,

// address of size of domain string

    PSID_NAME_USE peUse 

// address of SID-type indicator

   );

Parameters

lpSystemName
Points to a null-terminated string specifying the system. This string can be the name of a remote computer. If this string is NULL, the account name is looked up on the local system.
lpAccountName
Points to a null-terminated string specifying the account name.
Sid
Points to a buffer receiving the SID structure that corresponds to the account name pointed to by the lpAccountName parameter.
cbSid
Pointer to a DWORD variable. On input, this value specifies the size, in bytes, of the Sid buffer. If the function fails because the buffer is too small, this variable receives the required buffer size.
ReferencedDomainName
Points to a buffer receiving the name of the domain where the account name is found.
cbReferencedDomainName
Pointer to a DWORD variable. On input, this value specifies the size, in bytes (ANSI version) or characters (Unicode version), of the ReferencedDomainName buffer. If the function fails because the buffer is too small, this variable receives the required buffer size, including the terminating null character.
peUse
Points to a SID_NAME_USE enumerated type indicating the type of the account when the function returns.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The LookupAccountName function attempts to find a security identifier for the specified name by first checking a list of well-known SIDs. If the name does not correspond to a well-known SID, the function checks built-in and administratively defined local accounts. Next, the function checks the primary domain. If the name is not found there, trusted domains are checked.

See Also

EqualPrefixSid, GetUserName, LookupAccountSid 


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