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[NTOS:SE] Let SepGetSidFromAce figure out the ACE type

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As the commit title says. Instead of having the caller figuring out what
the ACE type should be of the ACE.
This commit is contained in:
unknown 2023-08-22 22:21:13 +02:00
parent a4b0899ca1
commit 310563aece
No known key found for this signature in database
GPG key ID: 688C4FBE25D7DEF6
4 changed files with 11 additions and 20 deletions
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1
ntoskrnl/include/internal/se.h
View file

@ -634,7 +634,6 @@ SepSidInTokenEx(
PSID
NTAPI
SepGetSidFromAce(
_In_ UCHAR AceType,
_In_ PACE Ace);
NTSTATUS

16
ntoskrnl/se/accesschk.c
View file

@ -517,7 +517,7 @@ SepAnalyzeAcesFromDacl(
if (CurrentAce->Header.AceType == ACCESS_DENIED_ACE_TYPE)
{
/* Get the SID from this ACE */
Sid = SepGetSidFromAce(ACCESS_DENIED_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ASSERT(Sid);
if (SepSidInTokenEx(AccessToken, PrincipalSelfSid, Sid, TRUE, IsTokenRestricted))
@ -539,7 +539,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
{
/* Get the SID from this ACE */
Sid = SepGetSidFromAce(ACCESS_ALLOWED_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ASSERT(Sid);
if (SepSidInTokenEx(AccessToken, PrincipalSelfSid, Sid, FALSE, IsTokenRestricted))
@ -561,7 +561,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_DENIED_OBJECT_ACE_TYPE)
{
/* Get the SID and object type from this ACE */
Sid = SepGetSidFromAce(ACCESS_DENIED_OBJECT_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ObjectTypeGuid = SepGetObjectTypeGuidFromAce(CurrentAce, TRUE);
ASSERT(Sid);
@ -610,7 +610,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_ALLOWED_OBJECT_ACE_TYPE)
{
/* Get the SID and object type from this ACE */
Sid = SepGetSidFromAce(ACCESS_ALLOWED_OBJECT_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ObjectTypeGuid = SepGetObjectTypeGuidFromAce(CurrentAce, FALSE);
ASSERT(Sid);
@ -705,7 +705,7 @@ SepAnalyzeAcesFromDacl(
if (CurrentAce->Header.AceType == ACCESS_DENIED_ACE_TYPE)
{
/* Get the SID from this ACE */
Sid = SepGetSidFromAce(ACCESS_DENIED_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ASSERT(Sid);
if (SepSidInTokenEx(AccessToken, PrincipalSelfSid, Sid, TRUE, IsTokenRestricted))
@ -735,7 +735,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_ALLOWED_ACE_TYPE)
{
/* Get the SID from this ACE */
Sid = SepGetSidFromAce(ACCESS_ALLOWED_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ASSERT(Sid);
if (SepSidInTokenEx(AccessToken, PrincipalSelfSid, Sid, FALSE, IsTokenRestricted))
@ -761,7 +761,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_DENIED_OBJECT_ACE_TYPE)
{
/* Get the SID and object type from this ACE */
Sid = SepGetSidFromAce(ACCESS_DENIED_OBJECT_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ObjectTypeGuid = SepGetObjectTypeGuidFromAce(CurrentAce, TRUE);
ASSERT(Sid);
@ -811,7 +811,7 @@ SepAnalyzeAcesFromDacl(
else if (CurrentAce->Header.AceType == ACCESS_ALLOWED_OBJECT_ACE_TYPE)
{
/* Get the SID and object type from this ACE */
Sid = SepGetSidFromAce(ACCESS_ALLOWED_OBJECT_ACE_TYPE, CurrentAce);
Sid = SepGetSidFromAce(CurrentAce);
ObjectTypeGuid = SepGetObjectTypeGuidFromAce(CurrentAce, FALSE);
ASSERT(Sid);

2
ntoskrnl/se/debug.c
View file

@ -118,7 +118,7 @@ SepDumpAces(
DbgPrint("Ace->Header.AceType -> %s\n", SepGetAceTypeString(Ace->Header.AceType));
DbgPrint("Ace->AccessMask -> 0x%08lx\n", Ace->AccessMask);
Sid = SepGetSidFromAce(Ace->Header.AceType, Ace);
Sid = SepGetSidFromAce(Ace);
ASSERT(Sid);
RtlConvertSidToUnicodeString(&SidString, Sid, TRUE);
DbgPrint("Ace SID -> %wZ\n", &SidString);

12
ntoskrnl/se/sid.c
View file

@ -558,13 +558,6 @@ SepSidInToken(
* given access control entry. This identifier
* is valid for the whole of its lifetime.
*
* @param[in] AceType
* The type of an access control entry. This
* type that is given by the calling thread
* must coincide with the actual ACE that is
* given in the second parameter otherwise this
* can potentially lead to UNDEFINED behavior!
*
* @param[in] Ace
* A pointer to an access control entry, which
* can be obtained from a DACL.
@ -577,7 +570,6 @@ SepSidInToken(
PSID
NTAPI
SepGetSidFromAce(
_In_ UCHAR AceType,
_In_ PACE Ace)
{
PULONG Flags;
@ -589,7 +581,7 @@ SepGetSidFromAce(
ASSERT(Ace);
/* Obtain the SID based upon ACE type */
switch (AceType)
switch (Ace->Header.AceType)
{
case ACCESS_DENIED_ACE_TYPE:
case ACCESS_ALLOWED_ACE_TYPE:
@ -620,7 +612,7 @@ SepGetSidFromAce(
default:
{
DPRINT1("SepGetSidFromAce(): Unknown ACE type (Ace 0x%p, Type %u)\n", Ace, AceType);
DPRINT1("SepGetSidFromAce(): Unknown ACE type (Ace 0x%p, Type %u)\n", Ace, Ace->Header.AceType);
break;
}
}