mirror of
https://github.com/mirror/processhacker
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wj32
7bd28e4357
git-svn-id: svn://svn.code.sf.net/p/processhacker/code@2304 21ef857c-d57f-4fe0-8362-d861dc6d29cd
103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
/*
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* Process Hacker Driver -
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* security
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*
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* Copyright (C) 2009 wj32
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*
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* This file is part of Process Hacker.
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*
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* Process Hacker is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Process Hacker is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Process Hacker. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "include/kph.h"
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#include "include/se.h"
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text(PAGE, KphOpenProcessTokenEx)
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#endif
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/* KphOpenProcessTokenEx
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*
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* Opens the primary token of the specified process.
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*/
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NTSTATUS KphOpenProcessTokenEx(
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__in HANDLE ProcessHandle,
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__in ACCESS_MASK DesiredAccess,
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__in ULONG ObjectAttributes,
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__out PHANDLE TokenHandle,
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__in KPROCESSOR_MODE AccessMode
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)
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{
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NTSTATUS status = STATUS_SUCCESS;
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PEPROCESS processObject;
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PACCESS_TOKEN tokenObject;
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HANDLE tokenHandle;
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ACCESS_STATE accessState;
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CHAR auxData[AUX_ACCESS_DATA_SIZE];
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status = SeCreateAccessState(
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&accessState,
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(PAUX_ACCESS_DATA)auxData,
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DesiredAccess,
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(PGENERIC_MAPPING)KVOFF(*SeTokenObjectType, OffOtiGenericMapping)
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);
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if (!NT_SUCCESS(status))
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{
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return status;
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}
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if (accessState.RemainingDesiredAccess & MAXIMUM_ALLOWED)
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accessState.PreviouslyGrantedAccess |= TOKEN_ALL_ACCESS;
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else
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accessState.PreviouslyGrantedAccess |= accessState.RemainingDesiredAccess;
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accessState.RemainingDesiredAccess = 0;
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status = ObReferenceObjectByHandle(
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ProcessHandle,
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0,
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*PsProcessType,
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KernelMode,
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&processObject,
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NULL
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);
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if (!NT_SUCCESS(status))
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{
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SeDeleteAccessState(&accessState);
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return status;
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}
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tokenObject = PsReferencePrimaryToken(processObject);
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ObDereferenceObject(processObject);
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status = ObOpenObjectByPointer(
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tokenObject,
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ObjectAttributes,
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&accessState,
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0,
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*SeTokenObjectType,
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AccessMode,
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&tokenHandle
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);
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SeDeleteAccessState(&accessState);
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ObDereferenceObject(tokenObject);
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if (NT_SUCCESS(status))
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*TokenHandle = tokenHandle;
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return status;
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}
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