LookupAccountSid
The LookupAccountSid
function accepts a security identifier (SID) as input. It retrieves the name of
the account for this SID and the name of the first domain on which this SID is
found.
BOOL LookupAccountSid(
|
LPCTSTR lpSystemName, |
// address of
string for system name |
|
PSID Sid, |
// address of
security identifier |
|
LPTSTR Name, |
// address of
string for account name |
|
LPDWORD cbName, |
// address of size
account string |
|
LPTSTR ReferencedDomainName, |
// address of
string for referenced domain |
|
LPDWORD cbReferencedDomainName, |
// address of size
domain string |
|
PSID_NAME_USE peUse |
// address of
structure for SID type |
|
); |
|
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 SID is looked up on the local
system.
Sid
Points to a SID structure for which the
account name is looked up.
Name
Points to a
buffer receiving a null-terminated string representing the account name
corresponding to the Sid parameter.
cbName
Pointer to a DWORD
variable. On input, this value specifies the size, in bytes (ANSI version) or
characters (Unicode version), of the Name buffer. If the function fails
because the buffer is too small, this variable receives the required buffer
size, including the terminating null character.
ReferencedDomainName
Points to a
buffer that will receive a null-terminated string giving the name of the domain
where the account name was found.
For Windows NT systems, the domain name returned for most accounts in
the local computer s security database is the computer s name as of the last
start of the system. Backslashes are excluded. If the computer s name changes,
the old name continues to be returned as the domain name until the system is
restarted.
For Windows NT Server systems, the domain name returned for most
accounts in the local computer s security database is the name of the domain
for which the Windows NT Server is a domain controller.
Some accounts are predefined by the system. The domain name returned
for these accounts is BUILTIN.
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 an 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 LookupAccountSid
function attempts to find a name for the specified security identifier by first
checking a list of well-known SIDs. If the supplied SID 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. Security
identifiers not recognized by the primary domain are checked against the
trusted domains corresponding to their SID prefixes.
See Also