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This PR ties together pseudoconsoles, user profiles, s4u logons, and process creation into what is (hopefully) a simple API for various Tailscale services to obtain Windows access tokens without requiring knowledge of any Windows passwords. It works both for domain-joined machines (Kerberos) and non-domain-joined machines. The former case is fairly straightforward as it is fully documented. OTOH, the latter case is not documented, though it is fully defined in the C headers in the Windows SDK. The documentation blanks were filled in by reading the source code of Microsoft's Win32 port of OpenSSH. We need to do a bit of acrobatics to make conpty work correctly while creating a child process with an s4u token; see the doc comments above startProcessInternal for details. Updates #12383 Signed-off-by: Aaron Klotz <aaron@tailscale.com>
17 lines
1.6 KiB
Go
17 lines
1.6 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package s4u
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//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go
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//go:generate go run golang.org/x/tools/cmd/goimports -w zsyscall_windows.go
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//sys allocateLocallyUniqueId(luid *windows.LUID) (err error) [int32(failretval)==0] = advapi32.AllocateLocallyUniqueId
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//sys impersonateLoggedOnUser(token windows.Token) (err error) [int32(failretval)==0] = advapi32.ImpersonateLoggedOnUser
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//sys lsaConnectUntrusted(lsaHandle *_LSAHANDLE) (ret windows.NTStatus) = secur32.LsaConnectUntrusted
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//sys lsaDeregisterLogonProcess(lsaHandle _LSAHANDLE) (ret windows.NTStatus) = secur32.LsaDeregisterLogonProcess
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//sys lsaFreeReturnBuffer(buffer uintptr) (ret windows.NTStatus) = secur32.LsaFreeReturnBuffer
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//sys lsaLogonUser(lsaHandle _LSAHANDLE, originName *windows.NTString, logonType _SECURITY_LOGON_TYPE, authenticationPackage uint32, authenticationInformation unsafe.Pointer, authenticationInformationLength uint32, localGroups *windows.Tokengroups, sourceContext *_TOKEN_SOURCE, profileBuffer *uintptr, profileBufferLength *uint32, logonID *windows.LUID, token *windows.Token, quotas *_QUOTA_LIMITS, subStatus *windows.NTStatus) (ret windows.NTStatus) = secur32.LsaLogonUser
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//sys lsaLookupAuthenticationPackage(lsaHandle _LSAHANDLE, packageName *windows.NTString, authenticationPackage *uint32) (ret windows.NTStatus) = secur32.LsaLookupAuthenticationPackage
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//sys lsaRegisterLogonProcess(logonProcessName *windows.NTString, lsaHandle *_LSAHANDLE, securityMode *_LSA_OPERATIONAL_MODE) (ret windows.NTStatus) = secur32.LsaRegisterLogonProcess
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