99 lines
2.8 KiB
C++
99 lines
2.8 KiB
C++
/* advapi32.cc: Win32 replacement functions.
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Copyright 2011, 2012, 2013 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include <winioctl.h>
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#include "shared_info.h"
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#include "ntdll.h"
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#define DEFAULT_NTSTATUS_TO_BOOL_RETURN \
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if (!NT_SUCCESS (status)) \
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SetLastError (RtlNtStatusToDosError (status)); \
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return NT_SUCCESS (status);
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/* This file should only contain non-trivial implementations of advapi32
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functions, or advapi32 functions for which the ntdll.dll equivalent
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is not easy to understand. In all other case, use the ntdll.dll
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equivalent. */
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BOOL WINAPI
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RevertToSelf ()
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{
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HANDLE tok = NULL;
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NTSTATUS status = NtSetInformationThread (NtCurrentThread (),
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ThreadImpersonationToken,
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&tok, sizeof tok);
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DEFAULT_NTSTATUS_TO_BOOL_RETURN
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}
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BOOL WINAPI
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DuplicateTokenEx (HANDLE tok, DWORD access, LPSECURITY_ATTRIBUTES sec_attr,
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SECURITY_IMPERSONATION_LEVEL level, TOKEN_TYPE type,
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PHANDLE new_tok)
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{
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SECURITY_QUALITY_OF_SERVICE sqos =
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{ sizeof sqos, level, SECURITY_STATIC_TRACKING, FALSE };
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OBJECT_ATTRIBUTES attr =
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{ sizeof attr, NULL, NULL,
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(sec_attr && sec_attr->bInheritHandle) ? OBJ_INHERIT : 0U,
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(sec_attr ? sec_attr->lpSecurityDescriptor : NULL), &sqos };
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NTSTATUS status = NtDuplicateToken (tok, access, &attr, FALSE, type, new_tok);
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DEFAULT_NTSTATUS_TO_BOOL_RETURN
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}
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BOOL WINAPI
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ImpersonateLoggedOnUser (HANDLE tok)
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{
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NTSTATUS status;
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HANDLE ptok = NULL;
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TOKEN_TYPE type;
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ULONG size;
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status = NtQueryInformationToken (tok, TokenType, &type, sizeof type, &size);
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if (!NT_SUCCESS (status))
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{
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SetLastError (RtlNtStatusToDosError (status));
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return FALSE;
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}
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if (type == TokenPrimary)
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{
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/* If its a primary token it must be converted to an impersonated
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token. */
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SECURITY_QUALITY_OF_SERVICE sqos =
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{ sizeof sqos, SecurityImpersonation, SECURITY_DYNAMIC_TRACKING, FALSE};
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OBJECT_ATTRIBUTES attr =
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{ sizeof attr, NULL, NULL, 0, NULL, &sqos };
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/* The required rights for the impersonation token according to MSDN. */
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status = NtDuplicateToken (tok, TOKEN_QUERY | TOKEN_IMPERSONATE,
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&attr, FALSE, TokenImpersonation, &ptok);
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if (!NT_SUCCESS (status))
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{
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SetLastError (RtlNtStatusToDosError (status));
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return FALSE;
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}
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tok = ptok;
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}
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status = NtSetInformationThread (NtCurrentThread (), ThreadImpersonationToken,
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&tok, sizeof tok);
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if (ptok)
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NtClose (ptok);
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DEFAULT_NTSTATUS_TO_BOOL_RETURN
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}
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BOOL WINAPI
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ImpersonateNamedPipeClient (HANDLE pipe)
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{
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IO_STATUS_BLOCK io;
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NTSTATUS status = NtFsControlFile (pipe, NULL, NULL, NULL, &io,
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FSCTL_PIPE_IMPERSONATE, NULL, 0, NULL, 0);
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DEFAULT_NTSTATUS_TO_BOOL_RETURN
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}
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