/// <summary>初始化 <see cref="T:System.Security.AccessControl.ObjectAce" /> 类的新实例。</summary>
/// <param name="aceFlags">新的访问控制项 (ACE) 的继承、继承传播和审核条件。</param>
/// <param name="qualifier">使用新的 ACE。</param>
/// <param name="accessMask">ACE 的访问掩码。</param>
/// <param name="sid">与新的 ACE 关联的 <see cref="T:System.Security.Principal.SecurityIdentifier" />。</param>
/// <param name="flags">
/// <paramref name="type" /> 和 <paramref name="inheritedType" /> 参数是否包含有效的对象 GUID。</param>
/// <param name="type">一个 GUID，标识新的 ACE 所应用到的对象类型。</param>
/// <param name="inheritedType">一个 GUID，标识能够继承新的 ACE 的对象类型。</param>
/// <param name="isCallback">如果新的 ACE 是回调类型的 ACE，则为 true。</param>
/// <param name="opaque">与新的 ACE 关联的不透明数据。只有回调 ACE 类型才允许不透明数据。此数组的长度一定不能大于 <see cref="M:System.Security.AccessControl.ObjectAceMaxOpaqueLength" /> 方法的返回值。</param>
/// <exception cref="T:System.ArgumentOutOfRangeException">qualifier 参数包含无效的值，或者不透明参数的值的长度大于 <see cref="M:System.Security.AccessControl.ObjectAceMaxOpaqueLength" /> 方法的返回值。</exception>
public ObjectAce(AceFlags aceFlags, AceQualifier qualifier, int accessMask, SecurityIdentifier sid, ObjectAceFlags flags, Guid type, Guid inheritedType, bool isCallback, byte[] opaque)
: base(ObjectAce.TypeFromQualifier(isCallback, qualifier), aceFlags, accessMask, sid, opaque)
{
this._objectFlags = flags;
this._objectAceType = type;
this._inheritedObjectAceType = inheritedType;
}
static void GetObjectAceTypeGuids(ObjectAce ace, out Guid type, out Guid inheritedType)
{
type = Guid.Empty; inheritedType = Guid.Empty;
if (0 != (ace.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent))
{
type = ace.ObjectAceType;
}
if (0 != (ace.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent))
{
inheritedType = ace.InheritedObjectAceType;
}
}
internal override AuditRule InternalAuditRuleFactory(QualifiedAce ace, Type targetType)
{
ObjectAce oace = ace as ObjectAce;
if (null == oace || ObjectAceFlags.None == oace.ObjectAceFlags)
{
return(base.InternalAuditRuleFactory(ace, targetType));
}
return(AuditRuleFactory(ace.SecurityIdentifier.Translate(targetType),
ace.AccessMask, ace.IsInherited,
ace.InheritanceFlags, ace.PropagationFlags, ace.AuditFlags,
oace.ObjectAceType, oace.InheritedObjectAceType));
}
private void GetObjectTypesForSplit(ObjectAce originalAce, int accessMask, AceFlags aceFlags, out ObjectAceFlags objectFlags, out Guid objectType, out Guid inheritedObjectType)
{
objectFlags = ObjectAceFlags.None;
objectType = Guid.Empty;
inheritedObjectType = Guid.Empty;
if ((accessMask & ObjectAce.AccessMaskWithObjectType) != 0)
{
objectType = originalAce.ObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent;
}
if (((byte)(aceFlags & AceFlags.ContainerInherit)) != 0)
{
inheritedObjectType = originalAce.InheritedObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent;
}
}
internal void AddQualifiedAce(SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType)
{
GenericAce ace;
if (sid == null)
{
throw new ArgumentNullException("sid");
}
this.ThrowIfNotCanonical();
bool flag = false;
if ((qualifier == AceQualifier.SystemAudit) && (((byte)(flags & AceFlags.AuditFlags)) == 0))
{
throw new ArgumentException(Environment.GetResourceString("Arg_EnumAtLeastOneFlag"), "flags");
}
if (accessMask == 0)
{
throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
}
if (!this.IsDS || (objectFlags == ObjectAceFlags.None))
{
ace = new CommonAce(flags, qualifier, accessMask, sid, false, null);
}
else
{
ace = new ObjectAce(flags, qualifier, accessMask, sid, objectFlags, objectType, inheritedObjectType, false, null);
}
if (this.InspectAce(ref ace, this is DiscretionaryAcl))
{
for (int i = 0; i < this.Count; i++)
{
QualifiedAce ace2 = this._acl[i] as QualifiedAce;
if ((ace2 != null) && this.MergeAces(ref ace2, ace as QualifiedAce))
{
flag = true;
break;
}
}
if (!flag)
{
this._acl.InsertAce(this._acl.Count, ace);
this._isDirty = true;
}
this.OnAclModificationTried();
}
}
internal void RemoveQualifiedAcesSpecific(SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType)
{
if (accessMask == 0)
{
throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
}
if ((qualifier == AceQualifier.SystemAudit) && (((byte)(flags & AceFlags.AuditFlags)) == 0))
{
throw new ArgumentException(Environment.GetResourceString("Arg_EnumAtLeastOneFlag"), "flags");
}
if (sid == null)
{
throw new ArgumentNullException("sid");
}
this.ThrowIfNotCanonical();
for (int i = 0; i < this.Count; i++)
{
QualifiedAce ace = this._acl[i] as QualifiedAce;
if ((((ace == null) || (((byte)(ace.AceFlags & AceFlags.Inherited)) != 0)) || ((ace.AceQualifier != qualifier) || (ace.SecurityIdentifier != sid))) || ((ace.AceFlags != flags) || (ace.AccessMask != accessMask)))
{
continue;
}
if (this.IsDS)
{
if ((ace is ObjectAce) && (objectFlags != ObjectAceFlags.None))
{
ObjectAce ace2 = ace as ObjectAce;
if (ace2.ObjectTypesMatch(objectFlags, objectType) && ace2.InheritedObjectTypesMatch(objectFlags, inheritedObjectType))
{
goto Label_00F2;
}
continue;
}
if ((ace is ObjectAce) || (objectFlags != ObjectAceFlags.None))
{
continue;
}
}
Label_00F2:
this._acl.RemoveAce(i);
i--;
}
this.OnAclModificationTried();
}
private bool GetAccessMaskForRemoval(QualifiedAce ace, ObjectAceFlags objectFlags, Guid objectType, ref int accessMask)
{
if (((ace.AccessMask & accessMask) & ObjectAce.AccessMaskWithObjectType) != 0)
{
if (ace is ObjectAce)
{
ObjectAce ace2 = ace as ObjectAce;
if (((objectFlags & ObjectAceFlags.ObjectAceTypePresent) != ObjectAceFlags.None) && ((ace2.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent) == ObjectAceFlags.None))
{
return(false);
}
if (!(((objectFlags & ObjectAceFlags.ObjectAceTypePresent) == ObjectAceFlags.None) || ace2.ObjectTypesMatch(objectFlags, objectType)))
{
accessMask &= ~ObjectAce.AccessMaskWithObjectType;
}
}
else if ((objectFlags & ObjectAceFlags.ObjectAceTypePresent) != ObjectAceFlags.None)
{
return(false);
}
}
return(true);
}
private bool GetInheritanceFlagsForRemoval(QualifiedAce ace, ObjectAceFlags objectFlags, Guid inheritedObjectType, ref AceFlags aceFlags)
{
if ((((byte)(ace.AceFlags & AceFlags.ContainerInherit)) != 0) && (((byte)(aceFlags & AceFlags.ContainerInherit)) != 0))
{
if (ace is ObjectAce)
{
ObjectAce ace2 = ace as ObjectAce;
if (((objectFlags & ObjectAceFlags.InheritedObjectAceTypePresent) != ObjectAceFlags.None) && ((ace2.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent) == ObjectAceFlags.None))
{
return(false);
}
if (!(((objectFlags & ObjectAceFlags.InheritedObjectAceTypePresent) == ObjectAceFlags.None) || ace2.InheritedObjectTypesMatch(objectFlags, inheritedObjectType)))
{
aceFlags = (AceFlags)((byte)(((int)aceFlags) & 240));
}
}
else if ((objectFlags & ObjectAceFlags.InheritedObjectAceTypePresent) != ObjectAceFlags.None)
{
return(false);
}
}
return(true);
}
/// <summary>Creates a <see cref="T:System.Security.AccessControl.GenericAce" /> object from the specified binary data.</summary>
/// <param name="binaryForm">The binary data from which to create the new <see cref="T:System.Security.AccessControl.GenericAce" /> object.</param>
/// <param name="offset">The offset at which to begin unmarshaling.</param>
/// <returns>The <see cref="T:System.Security.AccessControl.GenericAce" /> object this method creates.</returns>
// Token: 0x06001E46 RID: 7750 RVA: 0x00069C80 File Offset: 0x00067E80
public static GenericAce CreateFromBinaryForm(byte[] binaryForm, int offset)
{
GenericAce.VerifyHeader(binaryForm, offset);
AceType aceType = (AceType)binaryForm[offset];
GenericAce genericAce;
if (aceType == AceType.AccessAllowed || aceType == AceType.AccessDenied || aceType == AceType.SystemAudit || aceType == AceType.SystemAlarm || aceType == AceType.AccessAllowedCallback || aceType == AceType.AccessDeniedCallback || aceType == AceType.SystemAuditCallback || aceType == AceType.SystemAlarmCallback)
{
AceQualifier qualifier;
int accessMask;
SecurityIdentifier sid;
bool isCallback;
byte[] opaque;
if (!CommonAce.ParseBinaryForm(binaryForm, offset, out qualifier, out accessMask, out sid, out isCallback, out opaque))
{
goto IL_1A8;
}
AceFlags flags = (AceFlags)binaryForm[offset + 1];
genericAce = new CommonAce(flags, qualifier, accessMask, sid, isCallback, opaque);
}
else if (aceType == AceType.AccessAllowedObject || aceType == AceType.AccessDeniedObject || aceType == AceType.SystemAuditObject || aceType == AceType.SystemAlarmObject || aceType == AceType.AccessAllowedCallbackObject || aceType == AceType.AccessDeniedCallbackObject || aceType == AceType.SystemAuditCallbackObject || aceType == AceType.SystemAlarmCallbackObject)
{
AceQualifier qualifier2;
int accessMask2;
SecurityIdentifier sid2;
ObjectAceFlags flags2;
Guid type;
Guid inheritedType;
bool isCallback2;
byte[] opaque2;
if (!ObjectAce.ParseBinaryForm(binaryForm, offset, out qualifier2, out accessMask2, out sid2, out flags2, out type, out inheritedType, out isCallback2, out opaque2))
{
goto IL_1A8;
}
AceFlags aceFlags = (AceFlags)binaryForm[offset + 1];
genericAce = new ObjectAce(aceFlags, qualifier2, accessMask2, sid2, flags2, type, inheritedType, isCallback2, opaque2);
}
else if (aceType == AceType.AccessAllowedCompound)
{
int accessMask3;
CompoundAceType compoundAceType;
SecurityIdentifier sid3;
if (!CompoundAce.ParseBinaryForm(binaryForm, offset, out accessMask3, out compoundAceType, out sid3))
{
goto IL_1A8;
}
AceFlags flags3 = (AceFlags)binaryForm[offset + 1];
genericAce = new CompoundAce(flags3, accessMask3, compoundAceType, sid3);
}
else
{
AceFlags flags4 = (AceFlags)binaryForm[offset + 1];
byte[] array = null;
int num = (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8);
if (num % 4 != 0)
{
goto IL_1A8;
}
int num2 = num - 4;
if (num2 > 0)
{
array = new byte[num2];
for (int i = 0; i < num2; i++)
{
array[i] = binaryForm[offset + num - num2 + i];
}
}
genericAce = new CustomAce(aceType, flags4, array);
}
if ((genericAce is ObjectAce || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) == genericAce.BinaryLength) && (!(genericAce is ObjectAce) || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) == genericAce.BinaryLength || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) - 32 == genericAce.BinaryLength))
{
return(genericAce);
}
IL_1A8:
throw new ArgumentException(Environment.GetResourceString("ArgumentException_InvalidAceBinaryForm"), "binaryForm");
}
public static GenericAce CreateFromBinaryForm(byte[] binaryForm, int offset)
{
GenericAce ace;
VerifyHeader(binaryForm, offset);
System.Security.AccessControl.AceType type = (System.Security.AccessControl.AceType)binaryForm[offset];
switch (type)
{
case System.Security.AccessControl.AceType.AccessAllowed:
case System.Security.AccessControl.AceType.AccessDenied:
case System.Security.AccessControl.AceType.SystemAudit:
case System.Security.AccessControl.AceType.SystemAlarm:
case System.Security.AccessControl.AceType.AccessAllowedCallback:
case System.Security.AccessControl.AceType.AccessDeniedCallback:
case System.Security.AccessControl.AceType.SystemAuditCallback:
case System.Security.AccessControl.AceType.SystemAlarmCallback:
{
AceQualifier qualifier;
int num;
SecurityIdentifier identifier;
bool flag;
byte[] buffer;
if (!CommonAce.ParseBinaryForm(binaryForm, offset, out qualifier, out num, out identifier, out flag, out buffer))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags flags = (System.Security.AccessControl.AceFlags)binaryForm[offset + 1];
ace = new CommonAce(flags, qualifier, num, identifier, flag, buffer);
break;
}
case System.Security.AccessControl.AceType.AccessAllowedObject:
case System.Security.AccessControl.AceType.AccessDeniedObject:
case System.Security.AccessControl.AceType.SystemAuditObject:
case System.Security.AccessControl.AceType.SystemAlarmObject:
case System.Security.AccessControl.AceType.AccessAllowedCallbackObject:
case System.Security.AccessControl.AceType.AccessDeniedCallbackObject:
case System.Security.AccessControl.AceType.SystemAuditCallbackObject:
case System.Security.AccessControl.AceType.SystemAlarmCallbackObject:
{
AceQualifier qualifier2;
int num2;
SecurityIdentifier identifier2;
ObjectAceFlags flags2;
Guid guid;
Guid guid2;
bool flag2;
byte[] buffer2;
if (!ObjectAce.ParseBinaryForm(binaryForm, offset, out qualifier2, out num2, out identifier2, out flags2, out guid, out guid2, out flag2, out buffer2))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags aceFlags = (System.Security.AccessControl.AceFlags)binaryForm[offset + 1];
ace = new ObjectAce(aceFlags, qualifier2, num2, identifier2, flags2, guid, guid2, flag2, buffer2);
break;
}
case System.Security.AccessControl.AceType.AccessAllowedCompound:
{
int num3;
CompoundAceType type2;
SecurityIdentifier identifier3;
if (!CompoundAce.ParseBinaryForm(binaryForm, offset, out num3, out type2, out identifier3))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags flags4 = (System.Security.AccessControl.AceFlags)binaryForm[offset + 1];
ace = new CompoundAce(flags4, num3, type2, identifier3);
break;
}
default:
{
System.Security.AccessControl.AceFlags flags5 = (System.Security.AccessControl.AceFlags)binaryForm[offset + 1];
byte[] opaque = null;
int num4 = binaryForm[offset + 2] + (binaryForm[offset + 3] << 8);
if ((num4 % 4) != 0)
{
goto Label_01A8;
}
int num5 = num4 - 4;
if (num5 > 0)
{
opaque = new byte[num5];
for (int i = 0; i < num5; i++)
{
opaque[i] = binaryForm[((offset + num4) - num5) + i];
}
}
ace = new CustomAce(type, flags5, opaque);
break;
}
}
if (((ace is ObjectAce) || ((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) == ace.BinaryLength)) && ((!(ace is ObjectAce) || ((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) == ace.BinaryLength)) || (((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) - 0x20) == ace.BinaryLength)))
{
return(ace);
}
Label_01A8:
throw new ArgumentException(Environment.GetResourceString("ArgumentException_InvalidAceBinaryForm"), "binaryForm");
}
private AuthorizationRuleCollection GetRules(bool access, bool includeExplicit, bool includeInherited, System.Type targetType)
{
ReadLock();
try
{
AuthorizationRuleCollection result = new AuthorizationRuleCollection();
if (!IsValidTargetTypeStatic(targetType))
{
throw new ArgumentException(SR.Arg_MustBeIdentityReferenceType, nameof(targetType));
}
CommonAcl acl = null;
if (access)
{
if ((SecurityDescriptor.ControlFlags & ControlFlags.DiscretionaryAclPresent) != 0)
{
acl = SecurityDescriptor.DiscretionaryAcl;
}
}
else // !access == audit
{
if ((SecurityDescriptor.ControlFlags & ControlFlags.SystemAclPresent) != 0)
{
acl = SecurityDescriptor.SystemAcl;
}
}
if (acl == null)
{
//
// The required ACL was not present; return an empty collection.
//
return(result);
}
IdentityReferenceCollection irTarget = null;
if (targetType != typeof(SecurityIdentifier))
{
IdentityReferenceCollection irSource = new IdentityReferenceCollection(acl.Count);
for (int i = 0; i < acl.Count; i++)
{
//
// Calling the indexer on a common ACL results in cloning,
// (which would not be the case if we were to use the internal RawAcl property)
// but also ensures that the resulting order of ACEs is proper
// However, this is a big price to pay - cloning all the ACEs just so that
// the canonical order could be ascertained just once.
// A better way would be to have an internal method that would canonicalize the ACL
// and call it once, then use the RawAcl.
//
QualifiedAce ace = acl[i] as QualifiedAce;
if (ace == null)
{
//
// Only consider qualified ACEs
//
continue;
}
if (ace.IsCallback == true)
{
//
// Ignore callback ACEs
//
continue;
}
if (access)
{
if (ace.AceQualifier != AceQualifier.AccessAllowed && ace.AceQualifier != AceQualifier.AccessDenied)
{
continue;
}
}
else
{
if (ace.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
}
irSource.Add(ace.SecurityIdentifier);
}
irTarget = irSource.Translate(targetType);
}
for (int i = 0; i < acl.Count; i++)
{
//
// Calling the indexer on a common ACL results in cloning,
// (which would not be the case if we were to use the internal RawAcl property)
// but also ensures that the resulting order of ACEs is proper
// However, this is a big price to pay - cloning all the ACEs just so that
// the canonical order could be ascertained just once.
// A better way would be to have an internal method that would canonicalize the ACL
// and call it once, then use the RawAcl.
//
QualifiedAce ace = acl[i] as CommonAce;
if (ace == null)
{
ace = acl[i] as ObjectAce;
if (ace == null)
{
//
// Only consider common or object ACEs
//
continue;
}
}
if (ace.IsCallback == true)
{
//
// Ignore callback ACEs
//
continue;
}
if (access)
{
if (ace.AceQualifier != AceQualifier.AccessAllowed && ace.AceQualifier != AceQualifier.AccessDenied)
{
continue;
}
}
else
{
if (ace.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
}
if ((includeExplicit && ((ace.AceFlags & AceFlags.Inherited) == 0)) || (includeInherited && ((ace.AceFlags & AceFlags.Inherited) != 0)))
{
IdentityReference iref = (targetType == typeof(SecurityIdentifier)) ? ace.SecurityIdentifier : irTarget[i];
if (access)
{
AccessControlType type;
if (ace.AceQualifier == AceQualifier.AccessAllowed)
{
type = AccessControlType.Allow;
}
else
{
type = AccessControlType.Deny;
}
if (ace is ObjectAce)
{
ObjectAce objectAce = ace as ObjectAce;
result.AddRule(AccessRuleFactory(iref, objectAce.AccessMask, objectAce.IsInherited, objectAce.InheritanceFlags, objectAce.PropagationFlags, type, objectAce.ObjectAceType, objectAce.InheritedObjectAceType));
}
else
{
CommonAce commonAce = ace as CommonAce;
if (commonAce == null)
{
continue;
}
result.AddRule(AccessRuleFactory(iref, commonAce.AccessMask, commonAce.IsInherited, commonAce.InheritanceFlags, commonAce.PropagationFlags, type));
}
}
else
{
if (ace is ObjectAce)
{
ObjectAce objectAce = ace as ObjectAce;
result.AddRule(AuditRuleFactory(iref, objectAce.AccessMask, objectAce.IsInherited, objectAce.InheritanceFlags, objectAce.PropagationFlags, objectAce.AuditFlags, objectAce.ObjectAceType, objectAce.InheritedObjectAceType));
}
else
{
CommonAce commonAce = ace as CommonAce;
if (commonAce == null)
{
continue;
}
result.AddRule(AuditRuleFactory(iref, commonAce.AccessMask, commonAce.IsInherited, commonAce.InheritanceFlags, commonAce.PropagationFlags, commonAce.AuditFlags));
}
}
}
}
return(result);
}
finally
{
ReadUnlock();
}
}
internal bool RemoveQualifiedAces(SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, bool saclSemantics, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType)
{
if (accessMask == 0)
{
throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
}
if ((qualifier == AceQualifier.SystemAudit) && (((byte) (flags & AceFlags.AuditFlags)) == 0))
{
throw new ArgumentException(Environment.GetResourceString("Arg_EnumAtLeastOneFlag"), "flags");
}
if (sid == null)
{
throw new ArgumentNullException("sid");
}
this.ThrowIfNotCanonical();
bool flag = true;
bool flag2 = true;
int num = accessMask;
AceFlags flags2 = flags;
byte[] binaryForm = new byte[this.BinaryLength];
this.GetBinaryForm(binaryForm, 0);
Label_0075:
try
{
for (int i = 0; i < this.Count; i++)
{
QualifiedAce ace = this._acl[i] as QualifiedAce;
if (((ace == null) || (((byte) (ace.AceFlags & AceFlags.Inherited)) != 0)) || ((ace.AceQualifier != qualifier) || (ace.SecurityIdentifier != sid)))
{
continue;
}
if (this.IsDS)
{
accessMask = num;
bool flag3 = !this.GetAccessMaskForRemoval(ace, objectFlags, objectType, ref accessMask);
if ((ace.AccessMask & accessMask) == 0)
{
continue;
}
flags = flags2;
bool flag4 = !this.GetInheritanceFlagsForRemoval(ace, objectFlags, inheritedObjectType, ref flags);
if (((((((byte) (ace.AceFlags & AceFlags.ContainerInherit)) == 0) && (((byte) (flags & AceFlags.ContainerInherit)) != 0)) && (((byte) (flags & AceFlags.InheritOnly)) != 0)) || (((((byte) (flags & AceFlags.ContainerInherit)) == 0) && (((byte) (ace.AceFlags & AceFlags.ContainerInherit)) != 0)) && (((byte) (ace.AceFlags & AceFlags.InheritOnly)) != 0))) || (((((byte) (flags2 & AceFlags.ContainerInherit)) != 0) && (((byte) (flags2 & AceFlags.InheritOnly)) != 0)) && (((byte) (flags & AceFlags.ContainerInherit)) == 0)))
{
continue;
}
if (!flag3 && !flag4)
{
goto Label_0184;
}
flag2 = false;
goto Label_0483;
}
if ((ace.AccessMask & accessMask) == 0)
{
continue;
}
Label_0184:
if (!saclSemantics || (((byte) (((byte) (ace.AceFlags & flags)) & 0xc0)) != 0))
{
AceFlags none = AceFlags.None;
int num3 = 0;
ObjectAceFlags flags4 = ObjectAceFlags.None;
Guid empty = Guid.Empty;
Guid guid2 = Guid.Empty;
AceFlags aceFlags = AceFlags.None;
int num4 = 0;
ObjectAceFlags flags6 = ObjectAceFlags.None;
Guid guid3 = Guid.Empty;
Guid guid4 = Guid.Empty;
AceFlags existing = AceFlags.None;
int num5 = 0;
ObjectAceFlags flags8 = ObjectAceFlags.None;
Guid guid5 = Guid.Empty;
Guid guid6 = Guid.Empty;
AceFlags result = AceFlags.None;
bool total = false;
none = ace.AceFlags;
num3 = ace.AccessMask & ~accessMask;
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num3, none, out flags4, out empty, out guid2);
}
if (saclSemantics)
{
aceFlags = (AceFlags) ((byte) (ace.AceFlags & ~((byte) (flags & AceFlags.AuditFlags))));
num4 = ace.AccessMask & accessMask;
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num4, aceFlags, out flags6, out guid3, out guid4);
}
}
existing = (AceFlags) ((byte) (((byte) (ace.AceFlags & (AceFlags.ContainerInherit | AceFlags.InheritOnly | AceFlags.NoPropagateInherit | AceFlags.ObjectInherit))) | ((byte) (((byte) (flags & ace.AceFlags)) & 0xc0))));
num5 = ace.AccessMask & accessMask;
if (!saclSemantics || (((byte) (existing & AceFlags.AuditFlags)) != 0))
{
if (!RemoveInheritanceBits(existing, flags, this.IsDS, out result, out total))
{
flag2 = false;
goto Label_0483;
}
if (!total)
{
result = (AceFlags) ((byte) (result | ((byte) (existing & AceFlags.AuditFlags))));
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num5, result, out flags8, out guid5, out guid6);
}
}
}
if (!flag)
{
QualifiedAce ace2;
if (num3 != 0)
{
if (((ace is ObjectAce) && ((((ObjectAce) ace).ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent) != ObjectAceFlags.None)) && ((flags4 & ObjectAceFlags.ObjectAceTypePresent) == ObjectAceFlags.None))
{
this._acl.RemoveAce(i);
ObjectAce ace3 = new ObjectAce(none, qualifier, num3, ace.SecurityIdentifier, flags4, empty, guid2, false, null);
this._acl.InsertAce(i, ace3);
}
else
{
ace.AceFlags = none;
ace.AccessMask = num3;
if (ace is ObjectAce)
{
ObjectAce ace4 = ace as ObjectAce;
ace4.ObjectAceFlags = flags4;
ace4.ObjectAceType = empty;
ace4.InheritedObjectAceType = guid2;
}
}
}
else
{
this._acl.RemoveAce(i);
i--;
}
if (saclSemantics && (((byte) (aceFlags & AceFlags.AuditFlags)) != 0))
{
if (ace is CommonAce)
{
ace2 = new CommonAce(aceFlags, qualifier, num4, ace.SecurityIdentifier, false, null);
}
else
{
ace2 = new ObjectAce(aceFlags, qualifier, num4, ace.SecurityIdentifier, flags6, guid3, guid4, false, null);
}
i++;
this._acl.InsertAce(i, ace2);
}
if (!total)
{
if (ace is CommonAce)
{
ace2 = new CommonAce(result, qualifier, num5, ace.SecurityIdentifier, false, null);
}
else
{
ace2 = new ObjectAce(result, qualifier, num5, ace.SecurityIdentifier, flags8, guid5, guid6, false, null);
}
i++;
this._acl.InsertAce(i, ace2);
}
}
}
}
}
catch (OverflowException)
{
this._acl.SetBinaryForm(binaryForm, 0);
return false;
}
Label_0483:
if (flag && flag2)
{
flag = false;
goto Label_0075;
}
this.OnAclModificationTried();
return flag2;
}
internal bool RemoveQualifiedAces(SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, bool saclSemantics, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType)
{
if (accessMask == 0)
{
throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
}
if ((qualifier == AceQualifier.SystemAudit) && (((byte)(flags & AceFlags.AuditFlags)) == 0))
{
throw new ArgumentException(Environment.GetResourceString("Arg_EnumAtLeastOneFlag"), "flags");
}
if (sid == null)
{
throw new ArgumentNullException("sid");
}
this.ThrowIfNotCanonical();
bool flag = true;
bool flag2 = true;
int num = accessMask;
AceFlags flags2 = flags;
byte[] binaryForm = new byte[this.BinaryLength];
this.GetBinaryForm(binaryForm, 0);
Label_0075:
try
{
for (int i = 0; i < this.Count; i++)
{
QualifiedAce ace = this._acl[i] as QualifiedAce;
if (((ace == null) || (((byte)(ace.AceFlags & AceFlags.Inherited)) != 0)) || ((ace.AceQualifier != qualifier) || (ace.SecurityIdentifier != sid)))
{
continue;
}
if (this.IsDS)
{
accessMask = num;
bool flag3 = !this.GetAccessMaskForRemoval(ace, objectFlags, objectType, ref accessMask);
if ((ace.AccessMask & accessMask) == 0)
{
continue;
}
flags = flags2;
bool flag4 = !this.GetInheritanceFlagsForRemoval(ace, objectFlags, inheritedObjectType, ref flags);
if (((((((byte)(ace.AceFlags & AceFlags.ContainerInherit)) == 0) && (((byte)(flags & AceFlags.ContainerInherit)) != 0)) && (((byte)(flags & AceFlags.InheritOnly)) != 0)) || (((((byte)(flags & AceFlags.ContainerInherit)) == 0) && (((byte)(ace.AceFlags & AceFlags.ContainerInherit)) != 0)) && (((byte)(ace.AceFlags & AceFlags.InheritOnly)) != 0))) || (((((byte)(flags2 & AceFlags.ContainerInherit)) != 0) && (((byte)(flags2 & AceFlags.InheritOnly)) != 0)) && (((byte)(flags & AceFlags.ContainerInherit)) == 0)))
{
continue;
}
if (!flag3 && !flag4)
{
goto Label_0184;
}
flag2 = false;
goto Label_0483;
}
if ((ace.AccessMask & accessMask) == 0)
{
continue;
}
Label_0184:
if (!saclSemantics || (((byte)(((byte)(ace.AceFlags & flags)) & 0xc0)) != 0))
{
AceFlags none = AceFlags.None;
int num3 = 0;
ObjectAceFlags flags4 = ObjectAceFlags.None;
Guid empty = Guid.Empty;
Guid guid2 = Guid.Empty;
AceFlags aceFlags = AceFlags.None;
int num4 = 0;
ObjectAceFlags flags6 = ObjectAceFlags.None;
Guid guid3 = Guid.Empty;
Guid guid4 = Guid.Empty;
AceFlags existing = AceFlags.None;
int num5 = 0;
ObjectAceFlags flags8 = ObjectAceFlags.None;
Guid guid5 = Guid.Empty;
Guid guid6 = Guid.Empty;
AceFlags result = AceFlags.None;
bool total = false;
none = ace.AceFlags;
num3 = ace.AccessMask & ~accessMask;
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num3, none, out flags4, out empty, out guid2);
}
if (saclSemantics)
{
aceFlags = (AceFlags)((byte)(ace.AceFlags & ~((byte)(flags & AceFlags.AuditFlags))));
num4 = ace.AccessMask & accessMask;
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num4, aceFlags, out flags6, out guid3, out guid4);
}
}
existing = (AceFlags)((byte)(((byte)(ace.AceFlags & (AceFlags.ContainerInherit | AceFlags.InheritOnly | AceFlags.NoPropagateInherit | AceFlags.ObjectInherit))) | ((byte)(((byte)(flags & ace.AceFlags)) & 0xc0))));
num5 = ace.AccessMask & accessMask;
if (!saclSemantics || (((byte)(existing & AceFlags.AuditFlags)) != 0))
{
if (!RemoveInheritanceBits(existing, flags, this.IsDS, out result, out total))
{
flag2 = false;
goto Label_0483;
}
if (!total)
{
result = (AceFlags)((byte)(result | ((byte)(existing & AceFlags.AuditFlags))));
if (ace is ObjectAce)
{
this.GetObjectTypesForSplit(ace as ObjectAce, num5, result, out flags8, out guid5, out guid6);
}
}
}
if (!flag)
{
QualifiedAce ace2;
if (num3 != 0)
{
if (((ace is ObjectAce) && ((((ObjectAce)ace).ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent) != ObjectAceFlags.None)) && ((flags4 & ObjectAceFlags.ObjectAceTypePresent) == ObjectAceFlags.None))
{
this._acl.RemoveAce(i);
ObjectAce ace3 = new ObjectAce(none, qualifier, num3, ace.SecurityIdentifier, flags4, empty, guid2, false, null);
this._acl.InsertAce(i, ace3);
}
else
{
ace.AceFlags = none;
ace.AccessMask = num3;
if (ace is ObjectAce)
{
ObjectAce ace4 = ace as ObjectAce;
ace4.ObjectAceFlags = flags4;
ace4.ObjectAceType = empty;
ace4.InheritedObjectAceType = guid2;
}
}
}
else
{
this._acl.RemoveAce(i);
i--;
}
if (saclSemantics && (((byte)(aceFlags & AceFlags.AuditFlags)) != 0))
{
if (ace is CommonAce)
{
ace2 = new CommonAce(aceFlags, qualifier, num4, ace.SecurityIdentifier, false, null);
}
else
{
ace2 = new ObjectAce(aceFlags, qualifier, num4, ace.SecurityIdentifier, flags6, guid3, guid4, false, null);
}
i++;
this._acl.InsertAce(i, ace2);
}
if (!total)
{
if (ace is CommonAce)
{
ace2 = new CommonAce(result, qualifier, num5, ace.SecurityIdentifier, false, null);
}
else
{
ace2 = new ObjectAce(result, qualifier, num5, ace.SecurityIdentifier, flags8, guid5, guid6, false, null);
}
i++;
this._acl.InsertAce(i, ace2);
}
}
}
}
}
catch (OverflowException)
{
this._acl.SetBinaryForm(binaryForm, 0);
return(false);
}
Label_0483:
if (flag && flag2)
{
flag = false;
goto Label_0075;
}
this.OnAclModificationTried();
return(flag2);
}
private AuthorizationRuleCollection GetRules(bool access, bool includeExplicit, bool includeInherited, Type targetType)
{
AuthorizationRuleCollection rules2;
base.ReadLock();
try
{
AuthorizationRuleCollection rules = new AuthorizationRuleCollection();
if (!SecurityIdentifier.IsValidTargetTypeStatic(targetType))
{
throw new ArgumentException(Environment.GetResourceString("Arg_MustBeIdentityReferenceType"), "targetType");
}
CommonAcl discretionaryAcl = null;
if (access)
{
if ((base._securityDescriptor.ControlFlags & ControlFlags.DiscretionaryAclPresent) != ControlFlags.None)
{
discretionaryAcl = base._securityDescriptor.DiscretionaryAcl;
}
}
else if ((base._securityDescriptor.ControlFlags & ControlFlags.SystemAclPresent) != ControlFlags.None)
{
discretionaryAcl = base._securityDescriptor.SystemAcl;
}
if (discretionaryAcl == null)
{
return(rules);
}
IdentityReferenceCollection references = null;
if (targetType != typeof(SecurityIdentifier))
{
IdentityReferenceCollection references2 = new IdentityReferenceCollection(discretionaryAcl.Count);
for (int j = 0; j < discretionaryAcl.Count; j++)
{
QualifiedAce ace = discretionaryAcl[j] as QualifiedAce;
if ((ace == null) || ace.IsCallback)
{
continue;
}
if (access)
{
if ((ace.AceQualifier == AceQualifier.AccessAllowed) || (ace.AceQualifier == AceQualifier.AccessDenied))
{
goto Label_00DD;
}
continue;
}
if (ace.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
Label_00DD:
references2.Add(ace.SecurityIdentifier);
}
references = references2.Translate(targetType);
}
for (int i = 0; i < discretionaryAcl.Count; i++)
{
QualifiedAce ace2 = discretionaryAcl[i] as CommonAce;
if (ace2 == null)
{
ace2 = discretionaryAcl[i] as ObjectAce;
if (ace2 == null)
{
continue;
}
}
if (ace2.IsCallback)
{
continue;
}
if (access)
{
if ((ace2.AceQualifier == AceQualifier.AccessAllowed) || (ace2.AceQualifier == AceQualifier.AccessDenied))
{
goto Label_0174;
}
continue;
}
if (ace2.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
Label_0174:
if ((includeExplicit && (((byte)(ace2.AceFlags & AceFlags.Inherited)) == 0)) || (includeInherited && (((byte)(ace2.AceFlags & AceFlags.Inherited)) != 0)))
{
IdentityReference identityReference = (targetType == typeof(SecurityIdentifier)) ? ace2.SecurityIdentifier : references[i];
if (access)
{
AccessControlType allow;
if (ace2.AceQualifier == AceQualifier.AccessAllowed)
{
allow = AccessControlType.Allow;
}
else
{
allow = AccessControlType.Deny;
}
if (ace2 is ObjectAce)
{
ObjectAce ace3 = ace2 as ObjectAce;
rules.AddRule(this.AccessRuleFactory(identityReference, ace3.AccessMask, ace3.IsInherited, ace3.InheritanceFlags, ace3.PropagationFlags, allow, ace3.ObjectAceType, ace3.InheritedObjectAceType));
}
else
{
CommonAce ace4 = ace2 as CommonAce;
if (ace4 != null)
{
rules.AddRule(this.AccessRuleFactory(identityReference, ace4.AccessMask, ace4.IsInherited, ace4.InheritanceFlags, ace4.PropagationFlags, allow));
}
}
}
else if (ace2 is ObjectAce)
{
ObjectAce ace5 = ace2 as ObjectAce;
rules.AddRule(this.AuditRuleFactory(identityReference, ace5.AccessMask, ace5.IsInherited, ace5.InheritanceFlags, ace5.PropagationFlags, ace5.AuditFlags, ace5.ObjectAceType, ace5.InheritedObjectAceType));
}
else
{
CommonAce ace6 = ace2 as CommonAce;
if (ace6 != null)
{
rules.AddRule(this.AuditRuleFactory(identityReference, ace6.AccessMask, ace6.IsInherited, ace6.InheritanceFlags, ace6.PropagationFlags, ace6.AuditFlags));
}
}
}
}
rules2 = rules;
}
finally
{
base.ReadUnlock();
}
return(rules2);
}
//
// This method determines whether the object type and inherited object type from the original ace
// should be retained or not based on access mask and aceflags for a given split
//
private void GetObjectTypesForSplit( ObjectAce originalAce, int accessMask, AceFlags aceFlags, out ObjectAceFlags objectFlags, out Guid objectType, out Guid inheritedObjectType )
{
objectFlags = 0;
objectType = Guid.Empty;
inheritedObjectType = Guid.Empty;
//
// We should retain the object type if the access mask for this split contains any bits that refer to object type
//
if (( accessMask & ObjectAce.AccessMaskWithObjectType ) != 0 )
{
// keep the original ace's object flags and object type
objectType = originalAce.ObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent;
}
//
// We should retain the inherited object type if the aceflags for this contains inheritance (ContainerInherit)
//
if (( aceFlags & AceFlags.ContainerInherit ) != 0 )
{
// keep the original ace's object flags and object type
inheritedObjectType = originalAce.InheritedObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent;
}
}
private void GetObjectTypesForSplit(ObjectAce originalAce, int accessMask, AceFlags aceFlags, out ObjectAceFlags objectFlags, out Guid objectType, out Guid inheritedObjectType)
{
objectFlags = ObjectAceFlags.None;
objectType = Guid.Empty;
inheritedObjectType = Guid.Empty;
if ((accessMask & ObjectAce.AccessMaskWithObjectType) != 0)
{
objectType = originalAce.ObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent;
}
if (((byte) (aceFlags & AceFlags.ContainerInherit)) != 0)
{
inheritedObjectType = originalAce.InheritedObjectAceType;
objectFlags |= originalAce.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent;
}
}
//
// Helper function behind all the SetXXX methods
//
internal void SetQualifiedAce( SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType )
{
if ( sid == null )
{
throw new ArgumentNullException( "sid" );
}
if ( qualifier == AceQualifier.SystemAudit &&
(( flags & AceFlags.AuditFlags ) == 0 ))
{
throw new ArgumentException(
Environment.GetResourceString( "Arg_EnumAtLeastOneFlag" ),
"flags" );
}
if ( accessMask == 0 )
{
throw new ArgumentException(
Environment.GetResourceString( "Argument_ArgumentZero" ),
"accessMask" );
}
Contract.EndContractBlock();
ThrowIfNotCanonical();
GenericAce newAce;
if (( !IsDS ) || ( objectFlags == ObjectAceFlags.None ))
{
newAce = new CommonAce( flags, qualifier, accessMask, sid, false, null );
}
else
{
newAce = new ObjectAce( flags, qualifier, accessMask, sid, objectFlags, objectType, inheritedObjectType, false, null );
}
//
// Make sure the new ACE wouldn't be meaningless before proceeding
//
if ( false == InspectAce( ref newAce, ( this is DiscretionaryAcl )))
{
return;
}
for ( int i = 0; i < Count; i++ )
{
QualifiedAce ace = _acl[i] as QualifiedAce;
//
// Not a qualified ACE - keep going
//
if ( ace == null )
{
continue;
}
//
// Only interested in explicit (non-inherited) ACEs
//
if (( ace.AceFlags & AceFlags.Inherited ) != 0 )
{
continue;
}
//
// Only interested in ACEs with the specified qualifier
//
if ( ace.AceQualifier != qualifier )
{
continue;
}
//
// Only interested in ACEs with the specified SID
//
if ( ace.SecurityIdentifier != sid )
{
continue;
}
//
// This ACE corresponds to the SID and qualifier in question - remove it
//
_acl.RemoveAce( i );
i--;
}
//
// As a final step, add the ACE we want.
// Add it at the end - we'll re-canonicalize later.
//
_acl.InsertAce( _acl.Count, newAce );
//
// To aid the efficiency of batch operations, recanonicalize this later
//
_isDirty = true;
OnAclModificationTried();
}
/// <summary>从指定的二进制数据创建一个 <see cref="T:System.Security.AccessControl.GenericAce" /> 对象。</summary>
/// <returns>此方法创建的 <see cref="T:System.Security.AccessControl.GenericAce" /> 对象。</returns>
/// <param name="binaryForm">用于创建新 <see cref="T:System.Security.AccessControl.GenericAce" /> 对象的二进制数据。</param>
/// <param name="offset">开始取消封送的偏移量。</param>
public static GenericAce CreateFromBinaryForm(byte[] binaryForm, int offset)
{
GenericAce.VerifyHeader(binaryForm, offset);
AceType type = (AceType)binaryForm[offset];
GenericAce genericAce;
switch (type)
{
case AceType.AccessAllowed:
case AceType.AccessDenied:
case AceType.SystemAudit:
case AceType.SystemAlarm:
case AceType.AccessAllowedCallback:
case AceType.AccessDeniedCallback:
case AceType.SystemAuditCallback:
case AceType.SystemAlarmCallback:
AceQualifier qualifier1;
int accessMask1;
SecurityIdentifier sid1;
bool isCallback1;
byte[] opaque1;
if (CommonAce.ParseBinaryForm(binaryForm, offset, out qualifier1, out accessMask1, out sid1, out isCallback1, out opaque1))
{
genericAce = (GenericAce) new CommonAce((AceFlags)binaryForm[offset + 1], qualifier1, accessMask1, sid1, isCallback1, opaque1);
break;
}
goto label_15;
case AceType.AccessAllowedObject:
case AceType.AccessDeniedObject:
case AceType.SystemAuditObject:
case AceType.SystemAlarmObject:
case AceType.AccessAllowedCallbackObject:
case AceType.AccessDeniedCallbackObject:
case AceType.SystemAuditCallbackObject:
case AceType.SystemAlarmCallbackObject:
AceQualifier qualifier2;
int accessMask2;
SecurityIdentifier sid2;
ObjectAceFlags objectFlags;
Guid objectAceType;
Guid inheritedObjectAceType;
bool isCallback2;
byte[] opaque2;
if (ObjectAce.ParseBinaryForm(binaryForm, offset, out qualifier2, out accessMask2, out sid2, out objectFlags, out objectAceType, out inheritedObjectAceType, out isCallback2, out opaque2))
{
genericAce = (GenericAce) new ObjectAce((AceFlags)binaryForm[offset + 1], qualifier2, accessMask2, sid2, objectFlags, objectAceType, inheritedObjectAceType, isCallback2, opaque2);
break;
}
goto label_15;
case AceType.AccessAllowedCompound:
int accessMask3;
CompoundAceType compoundAceType;
SecurityIdentifier sid3;
if (CompoundAce.ParseBinaryForm(binaryForm, offset, out accessMask3, out compoundAceType, out sid3))
{
genericAce = (GenericAce) new CompoundAce((AceFlags)binaryForm[offset + 1], accessMask3, compoundAceType, sid3);
break;
}
goto label_15;
default:
AceFlags flags = (AceFlags)binaryForm[offset + 1];
byte[] opaque3 = (byte[])null;
int num = (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8);
if (num % 4 == 0)
{
int length = num - 4;
if (length > 0)
{
opaque3 = new byte[length];
for (int index = 0; index < length; ++index)
{
opaque3[index] = binaryForm[offset + num - length + index];
}
}
genericAce = (GenericAce) new CustomAce(type, flags, opaque3);
break;
}
goto label_15;
}
if ((genericAce is ObjectAce || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) == genericAce.BinaryLength) && (!(genericAce is ObjectAce) || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) == genericAce.BinaryLength || (int)binaryForm[offset + 2] + ((int)binaryForm[offset + 3] << 8) - 32 == genericAce.BinaryLength))
{
return(genericAce);
}
label_15:
throw new ArgumentException(Environment.GetResourceString("ArgumentException_InvalidAceBinaryForm"), "binaryForm");
}
static void GetObjectAceTypeGuids(ObjectAce ace, out Guid type, out Guid inheritedType)
{
type = Guid.Empty; inheritedType = Guid.Empty;
if (0 != (ace.ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent))
type = ace.ObjectAceType;
if (0 != (ace.ObjectAceFlags & ObjectAceFlags.InheritedObjectAceTypePresent))
inheritedType = ace.InheritedObjectAceType;
}
GenericAce MergeExplicitAcePair(GenericAce ace1, GenericAce ace2)
{
QualifiedAce qace1 = ace1 as QualifiedAce;
QualifiedAce qace2 = ace2 as QualifiedAce;
if (!(null != qace1 && null != qace2))
{
return(null);
}
if (!(qace1.AceQualifier == qace2.AceQualifier))
{
return(null);
}
if (!(qace1.SecurityIdentifier == qace2.SecurityIdentifier))
{
return(null);
}
AceFlags aceFlags1 = qace1.AceFlags, aceFlags2 = qace2.AceFlags, aceFlagsNew;
int accessMask1 = qace1.AccessMask, accessMask2 = qace2.AccessMask, accessMaskNew;
if (!IsContainer)
{
aceFlags1 &= ~AceFlags.InheritanceFlags;
aceFlags2 &= ~AceFlags.InheritanceFlags;
}
if (aceFlags1 != aceFlags2)
{
if (accessMask1 != accessMask2)
{
return(null);
}
if ((aceFlags1 & ~(AceFlags.ContainerInherit | AceFlags.ObjectInherit)) ==
(aceFlags2 & ~(AceFlags.ContainerInherit | AceFlags.ObjectInherit)))
{
aceFlagsNew = aceFlags1 | aceFlags2; // merge InheritanceFlags
accessMaskNew = accessMask1;
}
else if ((aceFlags1 & ~(AceFlags.SuccessfulAccess | AceFlags.FailedAccess)) ==
(aceFlags2 & ~(AceFlags.SuccessfulAccess | AceFlags.FailedAccess)))
{
aceFlagsNew = aceFlags1 | aceFlags2; // merge AuditFlags
accessMaskNew = accessMask1;
}
else
{
return(null);
}
}
else
{
aceFlagsNew = aceFlags1;
accessMaskNew = accessMask1 | accessMask2;
}
CommonAce cace1 = ace1 as CommonAce;
CommonAce cace2 = ace2 as CommonAce;
if (null != cace1 && null != cace2)
{
return(new CommonAce(aceFlagsNew, cace1.AceQualifier, accessMaskNew,
cace1.SecurityIdentifier, cace1.IsCallback, cace1.GetOpaque()));
}
ObjectAce oace1 = ace1 as ObjectAce;
ObjectAce oace2 = ace2 as ObjectAce;
if (null != oace1 && null != oace2)
{
// See DiscretionaryAclTest.GuidEmptyMergesRegardlessOfFlagsAndOpaqueDataIsNotConsidered
Guid type1, inheritedType1; GetObjectAceTypeGuids(oace1, out type1, out inheritedType1);
Guid type2, inheritedType2; GetObjectAceTypeGuids(oace2, out type2, out inheritedType2);
if (type1 == type2 && inheritedType1 == inheritedType2)
{
return(new ObjectAce(aceFlagsNew, oace1.AceQualifier, accessMaskNew,
oace1.SecurityIdentifier,
oace1.ObjectAceFlags, oace1.ObjectAceType, oace1.InheritedObjectAceType,
oace1.IsCallback, oace1.GetOpaque()));
}
}
return(null);
}
private AuthorizationRuleCollection GetRules(bool access, bool includeExplicit, bool includeInherited, Type targetType)
{
this.ReadLock();
try
{
AuthorizationRuleCollection authorizationRuleCollection = new AuthorizationRuleCollection();
if (!SecurityIdentifier.IsValidTargetTypeStatic(targetType))
{
throw new ArgumentException(Environment.GetResourceString("Arg_MustBeIdentityReferenceType"), "targetType");
}
CommonAcl commonAcl = (CommonAcl)null;
if (access)
{
if ((this._securityDescriptor.ControlFlags & ControlFlags.DiscretionaryAclPresent) != ControlFlags.None)
{
commonAcl = (CommonAcl)this._securityDescriptor.DiscretionaryAcl;
}
}
else if ((this._securityDescriptor.ControlFlags & ControlFlags.SystemAclPresent) != ControlFlags.None)
{
commonAcl = (CommonAcl)this._securityDescriptor.SystemAcl;
}
if (commonAcl == null)
{
return(authorizationRuleCollection);
}
IdentityReferenceCollection referenceCollection1 = (IdentityReferenceCollection)null;
if (targetType != typeof(SecurityIdentifier))
{
IdentityReferenceCollection referenceCollection2 = new IdentityReferenceCollection(commonAcl.Count);
for (int index = 0; index < commonAcl.Count; ++index)
{
QualifiedAce qualifiedAce = commonAcl[index] as QualifiedAce;
if (!((GenericAce)qualifiedAce == (GenericAce)null) && !qualifiedAce.IsCallback)
{
if (access)
{
if (qualifiedAce.AceQualifier != AceQualifier.AccessAllowed && qualifiedAce.AceQualifier != AceQualifier.AccessDenied)
{
continue;
}
}
else if (qualifiedAce.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
referenceCollection2.Add((IdentityReference)qualifiedAce.SecurityIdentifier);
}
}
referenceCollection1 = referenceCollection2.Translate(targetType);
}
for (int index = 0; index < commonAcl.Count; ++index)
{
QualifiedAce qualifiedAce = (QualifiedAce)(commonAcl[index] as CommonAce);
if ((GenericAce)qualifiedAce == (GenericAce)null)
{
qualifiedAce = (QualifiedAce)(commonAcl[index] as ObjectAce);
if ((GenericAce)qualifiedAce == (GenericAce)null)
{
continue;
}
}
if (!qualifiedAce.IsCallback)
{
if (access)
{
if (qualifiedAce.AceQualifier != AceQualifier.AccessAllowed && qualifiedAce.AceQualifier != AceQualifier.AccessDenied)
{
continue;
}
}
else if (qualifiedAce.AceQualifier != AceQualifier.SystemAudit)
{
continue;
}
if (includeExplicit && (qualifiedAce.AceFlags & AceFlags.Inherited) == AceFlags.None || includeInherited && (qualifiedAce.AceFlags & AceFlags.Inherited) != AceFlags.None)
{
IdentityReference identityReference = targetType == typeof(SecurityIdentifier) ? (IdentityReference)qualifiedAce.SecurityIdentifier : referenceCollection1[index];
if (access)
{
AccessControlType type = qualifiedAce.AceQualifier != AceQualifier.AccessAllowed ? AccessControlType.Deny : AccessControlType.Allow;
if (qualifiedAce is ObjectAce)
{
ObjectAce objectAce = qualifiedAce as ObjectAce;
authorizationRuleCollection.AddRule((AuthorizationRule)this.AccessRuleFactory(identityReference, objectAce.AccessMask, objectAce.IsInherited, objectAce.InheritanceFlags, objectAce.PropagationFlags, type, objectAce.ObjectAceType, objectAce.InheritedObjectAceType));
}
else
{
CommonAce commonAce = qualifiedAce as CommonAce;
if (!((GenericAce)commonAce == (GenericAce)null))
{
authorizationRuleCollection.AddRule((AuthorizationRule)this.AccessRuleFactory(identityReference, commonAce.AccessMask, commonAce.IsInherited, commonAce.InheritanceFlags, commonAce.PropagationFlags, type));
}
}
}
else if (qualifiedAce is ObjectAce)
{
ObjectAce objectAce = qualifiedAce as ObjectAce;
authorizationRuleCollection.AddRule((AuthorizationRule)this.AuditRuleFactory(identityReference, objectAce.AccessMask, objectAce.IsInherited, objectAce.InheritanceFlags, objectAce.PropagationFlags, objectAce.AuditFlags, objectAce.ObjectAceType, objectAce.InheritedObjectAceType));
}
else
{
CommonAce commonAce = qualifiedAce as CommonAce;
if (!((GenericAce)commonAce == (GenericAce)null))
{
authorizationRuleCollection.AddRule((AuthorizationRule)this.AuditRuleFactory(identityReference, commonAce.AccessMask, commonAce.IsInherited, commonAce.InheritanceFlags, commonAce.PropagationFlags, commonAce.AuditFlags));
}
}
}
}
}
return(authorizationRuleCollection);
}
finally
{
this.ReadUnlock();
}
}
//
// Instantiates the most-derived ACE type based on the binary
// representation of an ACE
//
public static GenericAce CreateFromBinaryForm(byte[] binaryForm, int offset)
{
GenericAce result;
AceType type;
//
// Sanity check the header
//
VerifyHeader(binaryForm, offset);
type = (AceType)binaryForm[offset];
if (type == AceType.AccessAllowed ||
type == AceType.AccessDenied ||
type == AceType.SystemAudit ||
type == AceType.SystemAlarm ||
type == AceType.AccessAllowedCallback ||
type == AceType.AccessDeniedCallback ||
type == AceType.SystemAuditCallback ||
type == AceType.SystemAlarmCallback)
{
AceQualifier qualifier;
int accessMask;
SecurityIdentifier sid;
bool isCallback;
byte[] opaque;
if (true == CommonAce.ParseBinaryForm(binaryForm, offset, out qualifier, out accessMask, out sid, out isCallback, out opaque))
{
AceFlags flags = (AceFlags)binaryForm[offset + 1];
result = new CommonAce(flags, qualifier, accessMask, sid, isCallback, opaque);
}
else
{
goto InvalidParameter;
}
}
else if (type == AceType.AccessAllowedObject ||
type == AceType.AccessDeniedObject ||
type == AceType.SystemAuditObject ||
type == AceType.SystemAlarmObject ||
type == AceType.AccessAllowedCallbackObject ||
type == AceType.AccessDeniedCallbackObject ||
type == AceType.SystemAuditCallbackObject ||
type == AceType.SystemAlarmCallbackObject)
{
AceQualifier qualifier;
int accessMask;
SecurityIdentifier sid;
ObjectAceFlags objectFlags;
Guid objectAceType;
Guid inheritedObjectAceType;
bool isCallback;
byte[] opaque;
if (true == ObjectAce.ParseBinaryForm(binaryForm, offset, out qualifier, out accessMask, out sid, out objectFlags, out objectAceType, out inheritedObjectAceType, out isCallback, out opaque))
{
AceFlags flags = (AceFlags)binaryForm[offset + 1];
result = new ObjectAce(flags, qualifier, accessMask, sid, objectFlags, objectAceType, inheritedObjectAceType, isCallback, opaque);
}
else
{
goto InvalidParameter;
}
}
else if (type == AceType.AccessAllowedCompound)
{
int accessMask;
CompoundAceType compoundAceType;
SecurityIdentifier sid;
if (true == CompoundAce.ParseBinaryForm(binaryForm, offset, out accessMask, out compoundAceType, out sid))
{
AceFlags flags = (AceFlags)binaryForm[offset + 1];
result = new CompoundAce(flags, accessMask, compoundAceType, sid);
}
else
{
goto InvalidParameter;
}
}
else
{
AceFlags flags = (AceFlags)binaryForm[offset + 1];
byte[] opaque = null;
int aceLength = (binaryForm[offset + 2] << 0) + (binaryForm[offset + 3] << 8);
if (aceLength % 4 != 0)
{
goto InvalidParameter;
}
int opaqueLength = aceLength - HeaderLength;
if (opaqueLength > 0)
{
opaque = new byte[opaqueLength];
for (int i = 0; i < opaqueLength; i++)
{
opaque[i] = binaryForm[offset + aceLength - opaqueLength + i];
}
}
result = new CustomAce(type, flags, opaque);
}
//
// As a final check, confirm that the advertised ACE header length
// was the actual parsed length
//
if (((!(result is ObjectAce)) && ((binaryForm[offset + 2] << 0) + (binaryForm[offset + 3] << 8) != result.BinaryLength))
//
// This is needed because object aces created through ADSI have the advertised ACE length
// greater than the actual length by 32 (bug in ADSI).
//
|| ((result is ObjectAce) && ((binaryForm[offset + 2] << 0) + (binaryForm[offset + 3] << 8) != result.BinaryLength) && (((binaryForm[offset + 2] << 0) + (binaryForm[offset + 3] << 8) - 32) != result.BinaryLength)))
{
goto InvalidParameter;
}
return result;
InvalidParameter:
throw new ArgumentException(
SR.ArgumentException_InvalidAceBinaryForm,
nameof(binaryForm));
}
public void GetBinaryForm ()
{
RawSecurityDescriptor sd = new RawSecurityDescriptor ("");
sd.Owner = new SecurityIdentifier (WellKnownSidType.BuiltinUsersSid, null);
sd.Group = new SecurityIdentifier (WellKnownSidType.BuiltinAdministratorsSid, null);
sd.DiscretionaryAcl = new RawAcl (1, 0);
sd.SystemAcl = new RawAcl (1, 0);
sd.SetFlags (sd.ControlFlags | ControlFlags.DiscretionaryAclPresent | ControlFlags.SystemAclPresent);
// Empty ACL form
byte[] buffer = new byte[sd.BinaryLength];
sd.GetBinaryForm (buffer, 0);
byte[] sdBinary = new byte[] {
0x01, 0x00, 0x14, 0x80, 0x14, 0x00, 0x00, 0x00, 0x24, 0x00,
0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00,
0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x20, 0x00,
0x00, 0x00, 0x21, 0x02, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x05, 0x20, 0x00, 0x00, 0x00, 0x20, 0x02,
0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00 };
Assert.AreEqual (sdBinary, buffer);
// Add an ACE to the DACL
SecurityIdentifier builtInAdmins = new SecurityIdentifier (WellKnownSidType.BuiltinAdministratorsSid, null);
CommonAce ace = new CommonAce (AceFlags.None, AceQualifier.AccessAllowed, 0x7FFFFFFF, builtInAdmins, false, null);
sd.DiscretionaryAcl.InsertAce (0, ace);
buffer = new byte[sd.BinaryLength];
sd.GetBinaryForm (buffer, 0);
sdBinary = new byte[] {
0x01, 0x00, 0x14, 0x80, 0x14, 0x00, 0x00, 0x00, 0x24, 0x00,
0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00,
0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x20, 0x00,
0x00, 0x00, 0x21, 0x02, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x05, 0x20, 0x00, 0x00, 0x00, 0x20, 0x02,
0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x20, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
0x18, 0x00, 0xFF, 0xFF, 0xFF, 0x7F, 0x01, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x05, 0x20, 0x00, 0x00, 0x00, 0x20, 0x02,
0x00, 0x00 };
Assert.AreEqual (sdBinary, buffer);
// This time with an Object ACE
ObjectAce objectAce = new ObjectAce (AceFlags.Inherited, AceQualifier.AccessAllowed, 0x12345678, builtInAdmins, ObjectAceFlags.ObjectAceTypePresent | ObjectAceFlags.InheritedObjectAceTypePresent, new Guid ("189c0dc7-b849-4dea-93a5-6d4cb8857a5c"), new Guid ("53b4a3d4-fe39-468b-bc60-b4fcba772fa5"), false, null);
sd.DiscretionaryAcl = new RawAcl (2, 0);
sd.DiscretionaryAcl.InsertAce (0, objectAce);
buffer = new byte[sd.BinaryLength];
sd.GetBinaryForm (buffer, 0);
sdBinary = new byte[] {
0x01, 0x00, 0x14, 0x80, 0x14, 0x00, 0x00, 0x00, 0x24, 0x00,
0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x3C, 0x00, 0x00, 0x00,
0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x20, 0x00,
0x00, 0x00, 0x21, 0x02, 0x00, 0x00, 0x01, 0x02, 0x00, 0x00,
0x00, 0x00, 0x00, 0x05, 0x20, 0x00, 0x00, 0x00, 0x20, 0x02,
0x00, 0x00, 0x01, 0x00, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00,
0x02, 0x00, 0x44, 0x00, 0x01, 0x00, 0x00, 0x00, 0x05, 0x10,
0x3C, 0x00, 0x78, 0x56, 0x34, 0x12, 0x03, 0x00, 0x00, 0x00,
0xC7, 0x0D, 0x9C, 0x18, 0x49, 0xB8, 0xEA, 0x4D, 0x93, 0xA5,
0x6D, 0x4C, 0xB8, 0x85, 0x7A, 0x5C, 0xD4, 0xA3, 0xB4, 0x53,
0x39, 0xFE, 0x8B, 0x46, 0xBC, 0x60, 0xB4, 0xFC, 0xBA, 0x77,
0x2F, 0xA5, 0x01, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05,
0x20, 0x00, 0x00, 0x00, 0x20, 0x02, 0x00, 0x00 };
Assert.AreEqual (sdBinary, buffer);
}
public static GenericAce CreateFromBinaryForm(byte[] binaryForm, int offset)
{
GenericAce ace;
VerifyHeader(binaryForm, offset);
System.Security.AccessControl.AceType type = (System.Security.AccessControl.AceType) binaryForm[offset];
switch (type)
{
case System.Security.AccessControl.AceType.AccessAllowed:
case System.Security.AccessControl.AceType.AccessDenied:
case System.Security.AccessControl.AceType.SystemAudit:
case System.Security.AccessControl.AceType.SystemAlarm:
case System.Security.AccessControl.AceType.AccessAllowedCallback:
case System.Security.AccessControl.AceType.AccessDeniedCallback:
case System.Security.AccessControl.AceType.SystemAuditCallback:
case System.Security.AccessControl.AceType.SystemAlarmCallback:
{
AceQualifier qualifier;
int num;
SecurityIdentifier identifier;
bool flag;
byte[] buffer;
if (!CommonAce.ParseBinaryForm(binaryForm, offset, out qualifier, out num, out identifier, out flag, out buffer))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags flags = (System.Security.AccessControl.AceFlags) binaryForm[offset + 1];
ace = new CommonAce(flags, qualifier, num, identifier, flag, buffer);
break;
}
case System.Security.AccessControl.AceType.AccessAllowedObject:
case System.Security.AccessControl.AceType.AccessDeniedObject:
case System.Security.AccessControl.AceType.SystemAuditObject:
case System.Security.AccessControl.AceType.SystemAlarmObject:
case System.Security.AccessControl.AceType.AccessAllowedCallbackObject:
case System.Security.AccessControl.AceType.AccessDeniedCallbackObject:
case System.Security.AccessControl.AceType.SystemAuditCallbackObject:
case System.Security.AccessControl.AceType.SystemAlarmCallbackObject:
{
AceQualifier qualifier2;
int num2;
SecurityIdentifier identifier2;
ObjectAceFlags flags2;
Guid guid;
Guid guid2;
bool flag2;
byte[] buffer2;
if (!ObjectAce.ParseBinaryForm(binaryForm, offset, out qualifier2, out num2, out identifier2, out flags2, out guid, out guid2, out flag2, out buffer2))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags aceFlags = (System.Security.AccessControl.AceFlags) binaryForm[offset + 1];
ace = new ObjectAce(aceFlags, qualifier2, num2, identifier2, flags2, guid, guid2, flag2, buffer2);
break;
}
case System.Security.AccessControl.AceType.AccessAllowedCompound:
{
int num3;
CompoundAceType type2;
SecurityIdentifier identifier3;
if (!CompoundAce.ParseBinaryForm(binaryForm, offset, out num3, out type2, out identifier3))
{
goto Label_01A8;
}
System.Security.AccessControl.AceFlags flags4 = (System.Security.AccessControl.AceFlags) binaryForm[offset + 1];
ace = new CompoundAce(flags4, num3, type2, identifier3);
break;
}
default:
{
System.Security.AccessControl.AceFlags flags5 = (System.Security.AccessControl.AceFlags) binaryForm[offset + 1];
byte[] opaque = null;
int num4 = binaryForm[offset + 2] + (binaryForm[offset + 3] << 8);
if ((num4 % 4) != 0)
{
goto Label_01A8;
}
int num5 = num4 - 4;
if (num5 > 0)
{
opaque = new byte[num5];
for (int i = 0; i < num5; i++)
{
opaque[i] = binaryForm[((offset + num4) - num5) + i];
}
}
ace = new CustomAce(type, flags5, opaque);
break;
}
}
if (((ace is ObjectAce) || ((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) == ace.BinaryLength)) && ((!(ace is ObjectAce) || ((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) == ace.BinaryLength)) || (((binaryForm[offset + 2] + (binaryForm[offset + 3] << 8)) - 0x20) == ace.BinaryLength)))
{
return ace;
}
Label_01A8:
throw new ArgumentException(Environment.GetResourceString("ArgumentException_InvalidAceBinaryForm"), "binaryForm");
}
//
// Helper function behind all the AddXXX methods for qualified aces
//
internal void AddQualifiedAce( SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType )
{
if ( sid == null )
{
throw new ArgumentNullException( "sid" );
}
Contract.EndContractBlock();
ThrowIfNotCanonical();
bool aceMerged = false; // if still false after all attempts to merge, create new entry
if ( qualifier == AceQualifier.SystemAudit &&
(( flags & AceFlags.AuditFlags ) == 0 ))
{
throw new ArgumentException(
Environment.GetResourceString( "Arg_EnumAtLeastOneFlag" ),
"flags" );
}
if ( accessMask == 0 )
{
throw new ArgumentException(
Environment.GetResourceString( "Argument_ArgumentZero" ),
"accessMask" );
}
GenericAce newAce;
if (( !IsDS ) || ( objectFlags == ObjectAceFlags.None ))
{
newAce = new CommonAce( flags, qualifier, accessMask, sid, false, null );
}
else
{
newAce = new ObjectAce( flags, qualifier, accessMask, sid, objectFlags, objectType, inheritedObjectType, false, null );
}
//
// Make sure the new ACE wouldn't be meaningless before proceeding
//
if ( false == InspectAce( ref newAce, ( this is DiscretionaryAcl )))
{
return;
}
//
// See if the new ACE can be merged with any of the existing ones
//
for ( int i = 0; i < Count; i++ )
{
QualifiedAce ace = _acl[i] as QualifiedAce;
if ( ace == null )
{
continue;
}
if ( true == MergeAces( ref ace, newAce as QualifiedAce ))
{
aceMerged = true;
break;
}
}
//
// Couldn't modify any existing entry, so add a new one
//
if ( !aceMerged )
{
_acl.InsertAce( _acl.Count, newAce );
_isDirty = true;
}
OnAclModificationTried();
}
// Token: 0x06001FF6 RID: 8182 RVA: 0x0006FAEC File Offset: 0x0006DCEC
private AuthorizationRuleCollection GetRules(bool access, bool includeExplicit, bool includeInherited, Type targetType)
{
base.ReadLock();
AuthorizationRuleCollection result;
try
{
AuthorizationRuleCollection authorizationRuleCollection = new AuthorizationRuleCollection();
if (!SecurityIdentifier.IsValidTargetTypeStatic(targetType))
{
throw new ArgumentException(Environment.GetResourceString("Arg_MustBeIdentityReferenceType"), "targetType");
}
CommonAcl commonAcl = null;
if (access)
{
if ((this._securityDescriptor.ControlFlags & ControlFlags.DiscretionaryAclPresent) != ControlFlags.None)
{
commonAcl = this._securityDescriptor.DiscretionaryAcl;
}
}
else if ((this._securityDescriptor.ControlFlags & ControlFlags.SystemAclPresent) != ControlFlags.None)
{
commonAcl = this._securityDescriptor.SystemAcl;
}
if (commonAcl == null)
{
result = authorizationRuleCollection;
}
else
{
IdentityReferenceCollection identityReferenceCollection = null;
if (targetType != typeof(SecurityIdentifier))
{
IdentityReferenceCollection identityReferenceCollection2 = new IdentityReferenceCollection(commonAcl.Count);
for (int i = 0; i < commonAcl.Count; i++)
{
QualifiedAce qualifiedAce = commonAcl[i] as QualifiedAce;
if (!(qualifiedAce == null) && !qualifiedAce.IsCallback)
{
if (access)
{
if (qualifiedAce.AceQualifier != AceQualifier.AccessAllowed && qualifiedAce.AceQualifier != AceQualifier.AccessDenied)
{
goto IL_EB;
}
}
else if (qualifiedAce.AceQualifier != AceQualifier.SystemAudit)
{
goto IL_EB;
}
identityReferenceCollection2.Add(qualifiedAce.SecurityIdentifier);
}
IL_EB :;
}
identityReferenceCollection = identityReferenceCollection2.Translate(targetType);
}
int j = 0;
while (j < commonAcl.Count)
{
QualifiedAce qualifiedAce2 = commonAcl[j] as CommonAce;
if (!(qualifiedAce2 == null))
{
goto IL_142;
}
qualifiedAce2 = (commonAcl[j] as ObjectAce);
if (!(qualifiedAce2 == null))
{
goto IL_142;
}
IL_306:
j++;
continue;
IL_142:
if (qualifiedAce2.IsCallback)
{
goto IL_306;
}
if (access)
{
if (qualifiedAce2.AceQualifier != AceQualifier.AccessAllowed && qualifiedAce2.AceQualifier != AceQualifier.AccessDenied)
{
goto IL_306;
}
}
else if (qualifiedAce2.AceQualifier != AceQualifier.SystemAudit)
{
goto IL_306;
}
if ((!includeExplicit || (qualifiedAce2.AceFlags & AceFlags.Inherited) != AceFlags.None) && (!includeInherited || (qualifiedAce2.AceFlags & AceFlags.Inherited) == AceFlags.None))
{
goto IL_306;
}
IdentityReference identityReference = (targetType == typeof(SecurityIdentifier)) ? qualifiedAce2.SecurityIdentifier : identityReferenceCollection[j];
if (access)
{
AccessControlType type;
if (qualifiedAce2.AceQualifier == AceQualifier.AccessAllowed)
{
type = AccessControlType.Allow;
}
else
{
type = AccessControlType.Deny;
}
if (qualifiedAce2 is ObjectAce)
{
ObjectAce objectAce = qualifiedAce2 as ObjectAce;
authorizationRuleCollection.AddRule(this.AccessRuleFactory(identityReference, objectAce.AccessMask, objectAce.IsInherited, objectAce.InheritanceFlags, objectAce.PropagationFlags, type, objectAce.ObjectAceType, objectAce.InheritedObjectAceType));
goto IL_306;
}
CommonAce commonAce = qualifiedAce2 as CommonAce;
if (!(commonAce == null))
{
authorizationRuleCollection.AddRule(this.AccessRuleFactory(identityReference, commonAce.AccessMask, commonAce.IsInherited, commonAce.InheritanceFlags, commonAce.PropagationFlags, type));
goto IL_306;
}
goto IL_306;
}
else
{
if (qualifiedAce2 is ObjectAce)
{
ObjectAce objectAce2 = qualifiedAce2 as ObjectAce;
authorizationRuleCollection.AddRule(this.AuditRuleFactory(identityReference, objectAce2.AccessMask, objectAce2.IsInherited, objectAce2.InheritanceFlags, objectAce2.PropagationFlags, objectAce2.AuditFlags, objectAce2.ObjectAceType, objectAce2.InheritedObjectAceType));
goto IL_306;
}
CommonAce commonAce2 = qualifiedAce2 as CommonAce;
if (!(commonAce2 == null))
{
authorizationRuleCollection.AddRule(this.AuditRuleFactory(identityReference, commonAce2.AccessMask, commonAce2.IsInherited, commonAce2.InheritanceFlags, commonAce2.PropagationFlags, commonAce2.AuditFlags));
goto IL_306;
}
goto IL_306;
}
}
result = authorizationRuleCollection;
}
}
finally
{
base.ReadUnlock();
}
return(result);
}
//
// Helper function behind all the RemoveXXX methods
//
internal bool RemoveQualifiedAces( SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, bool saclSemantics, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType )
{
if ( accessMask == 0 )
{
throw new ArgumentException(
Environment.GetResourceString( "Argument_ArgumentZero" ),
"accessMask" );
}
if ( qualifier == AceQualifier.SystemAudit &&
(( flags & AceFlags.AuditFlags ) == 0 ))
{
throw new ArgumentException(
Environment.GetResourceString( "Arg_EnumAtLeastOneFlag" ),
"flags" );
}
if ( sid == null )
{
throw new ArgumentNullException( "sid" );
}
Contract.EndContractBlock();
ThrowIfNotCanonical();
//
// Two passes are made.
// During the first pass, no changes are made to the ACL,
// the ACEs are simply evaluated to ascertain that the operation
// can succeed.
// If everything is kosher, the second pass is the one that makes changes.
//
bool evaluationPass = true;
bool removePossible = true; // unless proven otherwise
//
// Needed for DS acls to keep track of the original access mask specified for removal
//
int originalAccessMask = accessMask;
AceFlags originalFlags = flags;
//
// It is possible that the removal will result in an overflow exception
// because more ACEs get inserted.
// Save the current state of the object and revert to it later if
// and exception is thrown.
//
byte[] recovery = new byte[BinaryLength];
GetBinaryForm( recovery, 0 );
MakeAnotherPass:
try
{
for ( int i = 0; i < Count; i++ )
{
QualifiedAce ace = _acl[i] as QualifiedAce;
//
// Not a qualified ACE - keep going
//
if ( ace == null )
{
continue;
}
//
// Only interested in explicit (non-inherited) ACEs
//
if (( ace.AceFlags & AceFlags.Inherited ) != 0 )
{
continue;
}
//
// Only interested in ACEs with the specified qualifier
//
if ( ace.AceQualifier != qualifier )
{
continue;
}
//
// Only interested in ACEs with the specified SID
//
if ( ace.SecurityIdentifier != sid )
{
continue;
}
//
// If access masks have nothing in common, skip the whole exercise
//
if ( IsDS )
{
//
// incase of directory aces, if the access mask of the
// existing and new ace have any bits in common that need
// an object type, then we need to perform some checks on the
// object types in the two aces. Since certain bits are further qualified
// by the object type they cannot be determined to be common without
// inspecting the object type. It is possible that the same bits may be set but
// the object types are different in which case they are really not common bits.
//
accessMask = originalAccessMask;
bool objectTypesConflict = !GetAccessMaskForRemoval( ace, objectFlags, objectType, ref accessMask );
// if the access masks have nothing in common, skip
if (( ace.AccessMask & accessMask ) == 0 )
{
continue;
}
//
// incase of directory aces, if the existing and new ace are being inherited,
// then we need to perform some checks on the
// inherited object types in the two aces. Since inheritance is further qualified
// by the inherited object type the inheritance flags cannot be determined to be common without
// inspecting the inherited object type. It is possible that both aces may be further inherited but if
// the inherited object types are different the inheritance may not be common.
//
flags = originalFlags;
bool inheritedObjectTypesConflict = !GetInheritanceFlagsForRemoval( ace, objectFlags, inheritedObjectType, ref flags );
if (((( ace.AceFlags & AceFlags.ContainerInherit ) == 0 ) && (( flags & AceFlags.ContainerInherit ) != 0 ) && (( flags & AceFlags.InheritOnly ) != 0 )) ||
((( flags & AceFlags.ContainerInherit ) == 0 ) && (( ace.AceFlags & AceFlags.ContainerInherit ) != 0 ) && (( ace.AceFlags & AceFlags.InheritOnly ) != 0)))
{
// if one ace applies only to self and the other only to children/descendents we have nothing in common
continue;
}
//
// if the ace being removed referred only to child types and child types among existing ace and
// ace being removed are not common then there is nothing in common between these aces (skip)
//
if ((( originalFlags & AceFlags.ContainerInherit ) != 0 ) && (( originalFlags & AceFlags.InheritOnly ) != 0 ) && (( flags & AceFlags.ContainerInherit ) == 0 ))
{
continue;
}
if ( objectTypesConflict || inheritedObjectTypesConflict )
{
//
// if we reached this stage, then we've found something common between the two aces.
// But since there is a conflict between the object types (or inherited object types), the remove is not possible
//
removePossible = false;
break;
}
}
else
{
if (( ace.AccessMask & accessMask ) == 0 )
{
continue;
}
}
//
// If audit flags on a SACL have nothing in common,
// skip the whole exercise
//
if ( saclSemantics &&
(( ace.AceFlags & flags & AceFlags.AuditFlags ) == 0 ))
{
continue;
}
//
// See if the ACE needs to be split into several
// To illustrate with an example, consider this equation:
// From: CI OI NP SA FA R W
// Remove: OI IO NP SA R
//
// PermissionSplit: CI OI NP SA FA W // remove R
// AuditingSplit: CI OI NP FA R // remove SA
// MergeSplit: CI OI NP SA R // ready for merge
// Remove: OI IO NP SA R // same audit and perm flags as merge split
//
// Result: CI OI NP SA FA W // PermissionSplit
// CI OI NP FA R // AuditingSplit
// CI NP SA R // Result of perm removal
//
//
// Example for DS acls (when removal is possible)
//
// From: CI(Guid) LC CC(Guid)
// Remove: CI IO LC
//
// PermissionSplit: CI(Guid) CC(Guid) // Remove GR
// MergeSplit: CI(Guid) LC // Ready for merge
// Remove: CI IO LC // Removal is possible since we are trying to remove inheritance for
// all child types when it exists for one specific child type
//
// Result: CI(Guid) CC(Guid) // PermissionSplit
// LC // Result of perm removal
//
//
// Example for DS acls (when removal is NOT possible)
//
// From: CI GR CC(Guid)
// Remove: CI(Guid) IO LC
//
// PermissionSplit: CI CC(Guid) // Remove GR
// MergeSplit: CI LC // Ready for merge
// Remove: CI(Guid) IO CC // Removal is not possible since we are trying to remove
// inheritance for a specific child type when it exists for all child types
//
// Permission split settings
AceFlags ps_AceFlags = 0;
int ps_AccessMask = 0;
ObjectAceFlags ps_ObjectAceFlags = 0;
Guid ps_ObjectAceType = Guid.Empty;
Guid ps_InheritedObjectAceType = Guid.Empty;
// Auditing split makes sense if this is a SACL
AceFlags as_AceFlags = 0;
int as_AccessMask = 0;
ObjectAceFlags as_ObjectAceFlags = 0;
Guid as_ObjectAceType = Guid.Empty;
Guid as_InheritedObjectAceType = Guid.Empty;
// Merge split settings
AceFlags ms_AceFlags = 0;
int ms_AccessMask = 0;
ObjectAceFlags ms_ObjectAceFlags = 0;
Guid ms_ObjectAceType = Guid.Empty;
Guid ms_InheritedObjectAceType = Guid.Empty;
// Merge result settings
AceFlags mergeResultFlags = 0;
bool mergeRemoveTotal = false;
//
// First compute the permission split
//
ps_AceFlags = ace.AceFlags;
unchecked { ps_AccessMask = ace.AccessMask & ~accessMask; }
if ( ace is ObjectAce )
{
//
// determine what should be the object/inherited object types on the permission split
//
GetObjectTypesForSplit( ace as ObjectAce, ps_AccessMask /* access mask for this split */, ps_AceFlags /* flags remain the same */, out ps_ObjectAceFlags, out ps_ObjectAceType, out ps_InheritedObjectAceType );
}
//
// Next, for SACLs only, compute the auditing split
//
if ( saclSemantics )
{
//
// This operation can set the audit bits region
// of ACE flags to zero;
// This case will be handled later
//
unchecked { as_AceFlags = ace.AceFlags & ~( flags & AceFlags.AuditFlags ); }
//
// The result of this evaluation is guaranteed
// not to be zero by now
//
as_AccessMask = ( ace.AccessMask & accessMask );
if ( ace is ObjectAce )
{
//
// determine what should be the object/inherited object types on the audit split
//
GetObjectTypesForSplit( ace as ObjectAce, as_AccessMask /* access mask for this split */, as_AceFlags /* flags remain the same for inheritance */, out as_ObjectAceFlags, out as_ObjectAceType, out as_InheritedObjectAceType );
}
}
//
// Finally, compute the merge split
//
ms_AceFlags = ( ace.AceFlags & AceFlags.InheritanceFlags ) | ( flags & ace.AceFlags & AceFlags.AuditFlags );
ms_AccessMask = ( ace.AccessMask & accessMask );
//
// Now is the time to obtain the result of applying the remove
// operation to the merge split
// Skipping this step for SACLs where the merge split step
// produced no auditing flags
//
if ( !saclSemantics ||
(( ms_AceFlags & AceFlags.AuditFlags ) != 0 ))
{
if ( false == RemoveInheritanceBits( ms_AceFlags, flags, IsDS, out mergeResultFlags, out mergeRemoveTotal ))
{
removePossible = false;
break;
}
if ( !mergeRemoveTotal )
{
mergeResultFlags |= ( ms_AceFlags & AceFlags.AuditFlags );
if ( ace is ObjectAce )
{
//
// determine what should be the object/inherited object types on the merge split
//
GetObjectTypesForSplit( ace as ObjectAce, ms_AccessMask /* access mask for this split */, mergeResultFlags /* flags for this split */, out ms_ObjectAceFlags, out ms_ObjectAceType, out ms_InheritedObjectAceType );
}
}
}
//
// If this is no longer an evaluation, go ahead and make the changes
//
if ( !evaluationPass )
{
QualifiedAce newAce;
//
// Modify the existing ACE in-place if it has any access
// mask bits left, otherwise simply remove it
// However, if for an object ace we are removing the object type
// then we should really remove this ace and add a new one since
// we would be changing the size of this ace
//
if ( ps_AccessMask != 0 )
{
if (( ace is ObjectAce ) &&
(((( ObjectAce) ace ).ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent ) != 0 ) &&
(( ps_ObjectAceFlags & ObjectAceFlags.ObjectAceTypePresent ) == 0 ))
{
ObjectAce newObjectAce;
_acl.RemoveAce(i);
newObjectAce = new ObjectAce( ps_AceFlags, qualifier, ps_AccessMask, ace.SecurityIdentifier, ps_ObjectAceFlags, ps_ObjectAceType, ps_InheritedObjectAceType, false, null );
_acl.InsertAce( i, newObjectAce );
}
else
{
ace.AceFlags = ps_AceFlags;
ace.AccessMask = ps_AccessMask;
if ( ace is ObjectAce )
{
ObjectAce objectAce = ace as ObjectAce;
objectAce.ObjectAceFlags = ps_ObjectAceFlags;
objectAce.ObjectAceType = ps_ObjectAceType;
objectAce.InheritedObjectAceType = ps_InheritedObjectAceType;
}
}
}
else
{
_acl.RemoveAce(i);
i--; // keep the array index honest
}
//
// On a SACL, the result of the auditing split must be recorded
//
if ( saclSemantics && (( as_AceFlags & AceFlags.AuditFlags ) != 0 ))
{
if ( ace is CommonAce )
{
newAce = new CommonAce( as_AceFlags, qualifier, as_AccessMask, ace.SecurityIdentifier, false, null );
}
else
{
// object ace
newAce = new ObjectAce( as_AceFlags, qualifier, as_AccessMask, ace.SecurityIdentifier, as_ObjectAceFlags, as_ObjectAceType, as_InheritedObjectAceType, false, null );
}
i++; // so it's not considered again
_acl.InsertAce( i, newAce );
}
//
// If there are interesting bits left over from a remove, store them
// as a separate ACE
//
if ( !mergeRemoveTotal )
{
if ( ace is CommonAce )
{
newAce = new CommonAce( mergeResultFlags, qualifier, ms_AccessMask, ace.SecurityIdentifier, false, null );
}
else
{
// object ace
newAce = new ObjectAce( mergeResultFlags, qualifier, ms_AccessMask, ace.SecurityIdentifier, ms_ObjectAceFlags, ms_ObjectAceType, ms_InheritedObjectAceType, false, null );
}
i++; // so it's not considered again
_acl.InsertAce( i, newAce );
}
}
}
}
catch( OverflowException )
{
//
// Oops, overflow means that the ACL became too big.
// Inform the caller that the remove was not possible.
//
_acl.SetBinaryForm( recovery, 0 );
return false;
}
//
// Finished evaluating the possibility of a remove.
// If it looks like it's doable, go ahead and do it.
//
if ( evaluationPass && removePossible )
{
evaluationPass = false;
goto MakeAnotherPass;
}
OnAclModificationTried();
return removePossible;
}
internal void AddQualifiedAce(SecurityIdentifier sid, AceQualifier qualifier, int accessMask, AceFlags flags, ObjectAceFlags objectFlags, Guid objectType, Guid inheritedObjectType)
{
GenericAce ace;
if (sid == null)
{
throw new ArgumentNullException("sid");
}
this.ThrowIfNotCanonical();
bool flag = false;
if ((qualifier == AceQualifier.SystemAudit) && (((byte) (flags & AceFlags.AuditFlags)) == 0))
{
throw new ArgumentException(Environment.GetResourceString("Arg_EnumAtLeastOneFlag"), "flags");
}
if (accessMask == 0)
{
throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
}
if (!this.IsDS || (objectFlags == ObjectAceFlags.None))
{
ace = new CommonAce(flags, qualifier, accessMask, sid, false, null);
}
else
{
ace = new ObjectAce(flags, qualifier, accessMask, sid, objectFlags, objectType, inheritedObjectType, false, null);
}
if (this.InspectAce(ref ace, this is DiscretionaryAcl))
{
for (int i = 0; i < this.Count; i++)
{
QualifiedAce ace2 = this._acl[i] as QualifiedAce;
if ((ace2 != null) && this.MergeAces(ref ace2, ace as QualifiedAce))
{
flag = true;
break;
}
}
if (!flag)
{
this._acl.InsertAce(this._acl.Count, ace);
this._isDirty = true;
}
this.OnAclModificationTried();
}
}