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windows: add Token.IsRestricted helper

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This adds an additional helper method to Token to determine whether or
not it's a restricted one, by using:
https://docs.microsoft.com/en-us/windows/win32/api/securitybaseapi/nf-securitybaseapi-istokenrestricted

Change-Id: I1f2d051450524c22665c4bb99f5948b375b5e199
Reviewed-on: https://go-review.googlesource.com/c/sys/+/272107
Run-TryBot: Jason A. Donenfeld <Jason@zx2c4.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Trust: Alex Brainman <alex.brainman@gmail.com>
Trust: Jason A. Donenfeld <Jason@zx2c4.com>
This commit is contained in:
Jason A. Donenfeld
2020-11-26 22:47:55 +00:00
parent a4b67b81d3
commit f88b827b86
2 changed files with 21 additions and 0 deletions
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windows/security_windows.go
+11
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@@ -624,6 +624,7 @@ func (tml *Tokenmandatorylabel) Size() uint32 {
// Authorization Functions
//sys checkTokenMembership(tokenHandle Token, sidToCheck *SID, isMember *int32) (err error) = advapi32.CheckTokenMembership
//sys isTokenRestricted(tokenHandle Token) (ret bool, err error) [!failretval] = advapi32.IsTokenRestricted
//sys OpenProcessToken(process Handle, access uint32, token *Token) (err error) = advapi32.OpenProcessToken
//sys OpenThreadToken(thread Handle, access uint32, openAsSelf bool, token *Token) (err error) = advapi32.OpenThreadToken
//sys ImpersonateSelf(impersonationlevel uint32) (err error) = advapi32.ImpersonateSelf
@@ -837,6 +838,16 @@ func (t Token) IsMember(sid *SID) (bool, error) {
return b != 0, nil
}
// IsRestricted reports whether the access token t is a restricted token.
func (t Token) IsRestricted() (isRestricted bool, err error) {
isRestricted, err = isTokenRestricted(t)
if !isRestricted && err == syscall.EINVAL {
// If err is EINVAL, this returned ERROR_SUCCESS indicating a non-restricted token.
err = nil
}
return
}
const (
WTS_CONSOLE_CONNECT = 0x1
WTS_CONSOLE_DISCONNECT = 0x2