ACE (jCIFS 1.3.18.1 API)

java.lang.Object
- jcifs.smb.ACE

```
public class ACE
extends Object
```
An Access Control Entry (ACE) is an element in a security descriptor such as those associated with files and directories. The Windows OS determines which users have the necessary permissions to access objects based on these entries.
To fully understand the information exposed by this class a description of the access check algorithm used by Windows is required. The following is a basic description of the algorithm. For a more complete description we recommend reading the section on Access Control in Keith Brown's "The .NET Developer's Guide to Windows Security" (which is also available online).
Direct ACEs are evaluated first in order. The SID of the user performing the operation and the desired access bits are compared to the SID and access mask of each ACE. If the SID matches, the allow/deny flags and access mask are considered. If the ACE is a "deny" ACE and any of the desired access bits match bits in the access mask of the ACE, the whole access check fails. If the ACE is an "allow" ACE and all of the bits in the desired access bits match bits in the access mask of the ACE, the access check is successful. Otherwise, more ACEs are evaluated until all desired access bits (combined) are "allowed". If all of the desired access bits are not "allowed" the then same process is repeated for inherited ACEs.
For example, if user WNET\alice tries to open a file with desired access bits 0x00000003 (FILE_READ_DATA | FILE_WRITE_DATA) and the target file has the following security descriptor ACEs:
```
 Allow WNET\alice     0x001200A9  Direct
 Allow Administrators 0x001F01FF  Inherited
 Allow SYSTEM         0x001F01FF  Inherited
 
```
the access check would fail because the direct ACE has an access mask of 0x001200A9 which doesn't have the FILE_WRITE_DATA bit on (bit 0x00000002). Actually, this isn't quite correct. If WNET\alice is in the local Administrators group the access check will succeed because the inherited ACE allows local Administrators both FILE_READ_DATA and FILE_WRITE_DATA access.

フィールドのサマリー

フィールド
修飾子とタイプ	フィールドと説明
`static int`	`DELETE`
`static int`	`FILE_APPEND_DATA`
`static int`	`FILE_DELETE`
`static int`	`FILE_EXECUTE`
`static int`	`FILE_READ_ATTRIBUTES`
`static int`	`FILE_READ_DATA`
`static int`	`FILE_READ_EA`
`static int`	`FILE_WRITE_ATTRIBUTES`
`static int`	`FILE_WRITE_DATA`
`static int`	`FILE_WRITE_EA`
`static int`	`FLAGS_CONTAINER_INHERIT`
`static int`	`FLAGS_INHERIT_ONLY`
`static int`	`FLAGS_INHERITED`
`static int`	`FLAGS_NO_PROPAGATE`
`static int`	`FLAGS_OBJECT_INHERIT`
`static int`	`GENERIC_ALL`
`static int`	`GENERIC_EXECUTE`
`static int`	`GENERIC_READ`
`static int`	`GENERIC_WRITE`
`static int`	`READ_CONTROL`
`static int`	`SYNCHRONIZE`
`static int`	`WRITE_DAC`
`static int`	`WRITE_OWNER`

コンストラクタのサマリー

コンストラクタ
コンストラクタと説明

ACE()

コンストラクタ
コンストラクタと説明
`ACE()`

メソッドのサマリー

すべてのメソッドインスタンス・メソッド concreteメソッド
修飾子とタイプ	メソッドと説明
`int`	`getAccessMask()` Returns the access mask accociated with this ACE.
`String`	`getApplyToText()` Returns the 'Apply To' text for inheritance of ACEs on directories such as 'This folder, subfolder and files'.
`int`	`getFlags()` Returns the flags for this ACE.
`SID`	`getSID()` Return the SID associated with this ACE.
`boolean`	`isAllow()` Returns true if this ACE is an allow ACE and false if it is a deny ACE.
`boolean`	`isInherited()` Returns true if this ACE is an inherited ACE and false if it is a direct ACE.
`String`	`toString()` Return a string represeting this ACE.

クラスから継承されたメソッド java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- フィールドの詳細
  - FILE_READ_DATA
```
public static final int FILE_READ_DATA
```
    関連項目:
    
    定数フィールド値
  - FILE_WRITE_DATA
```
public static final int FILE_WRITE_DATA
```
    関連項目:
    
    定数フィールド値
  - FILE_APPEND_DATA
```
public static final int FILE_APPEND_DATA
```
    関連項目:
    
    定数フィールド値
  - FILE_READ_EA
```
public static final int FILE_READ_EA
```
    関連項目:
    
    定数フィールド値
  - FILE_WRITE_EA
```
public static final int FILE_WRITE_EA
```
    関連項目:
    
    定数フィールド値
  - FILE_EXECUTE
```
public static final int FILE_EXECUTE
```
    関連項目:
    
    定数フィールド値
  - FILE_DELETE
```
public static final int FILE_DELETE
```
    関連項目:
    
    定数フィールド値
  - FILE_READ_ATTRIBUTES
```
public static final int FILE_READ_ATTRIBUTES
```
    関連項目:
    
    定数フィールド値
  - FILE_WRITE_ATTRIBUTES
```
public static final int FILE_WRITE_ATTRIBUTES
```
    関連項目:
    
    定数フィールド値
  - DELETE
```
public static final int DELETE
```
    関連項目:
    
    定数フィールド値
  - READ_CONTROL
```
public static final int READ_CONTROL
```
    関連項目:
    
    定数フィールド値
  - WRITE_DAC
```
public static final int WRITE_DAC
```
    関連項目:
    
    定数フィールド値
  - WRITE_OWNER
```
public static final int WRITE_OWNER
```
    関連項目:
    
    定数フィールド値
  - SYNCHRONIZE
```
public static final int SYNCHRONIZE
```
    関連項目:
    
    定数フィールド値
  - GENERIC_ALL
```
public static final int GENERIC_ALL
```
    関連項目:
    
    定数フィールド値
  - GENERIC_EXECUTE
```
public static final int GENERIC_EXECUTE
```
    関連項目:
    
    定数フィールド値
  - GENERIC_WRITE
```
public static final int GENERIC_WRITE
```
    関連項目:
    
    定数フィールド値
  - GENERIC_READ
```
public static final int GENERIC_READ
```
    関連項目:
    
    定数フィールド値
  - FLAGS_OBJECT_INHERIT
```
public static final int FLAGS_OBJECT_INHERIT
```
    関連項目:
    
    定数フィールド値
  - FLAGS_CONTAINER_INHERIT
```
public static final int FLAGS_CONTAINER_INHERIT
```
    関連項目:
    
    定数フィールド値
  - FLAGS_NO_PROPAGATE
```
public static final int FLAGS_NO_PROPAGATE
```
    関連項目:
    
    定数フィールド値
  - FLAGS_INHERIT_ONLY
```
public static final int FLAGS_INHERIT_ONLY
```
    関連項目:
    
    定数フィールド値
  - FLAGS_INHERITED
```
public static final int FLAGS_INHERITED
```
    関連項目:
    
    定数フィールド値
- コンストラクタの詳細
  - ACE
```
public ACE()
```
- メソッドの詳細
  - isAllow
```
public boolean isAllow()
```
    Returns true if this ACE is an allow ACE and false if it is a deny ACE.
  - isInherited
```
public boolean isInherited()
```
    Returns true if this ACE is an inherited ACE and false if it is a direct ACE.
    Note: For reasons not fully understood, FLAGS_INHERITED may not be set within all security descriptors even though the ACE was in face inherited. If an inherited ACE is added to a parent the Windows ACL editor will rebuild all children ACEs and set this flag accordingly.
  - getFlags
```
public int getFlags()
```
    Returns the flags for this ACE. The isInherited() method checks the FLAGS_INHERITED bit in these flags.
  - getApplyToText
```
public String getApplyToText()
```
    Returns the 'Apply To' text for inheritance of ACEs on directories such as 'This folder, subfolder and files'. For files the text is always 'This object only'.
  - getAccessMask
```
public int getAccessMask()
```
    Returns the access mask accociated with this ACE. Use the constants for FILE_READ_DATA, FILE_WRITE_DATA, READ_CONTROL, GENERIC_ALL, etc with bitwise operators to determine which bits of the mask are on or off.
  - getSID
```
public SID getSID()
```
    Return the SID associated with this ACE.
  - toString
```
public String toString()
```
    Return a string represeting this ACE.
    Note: This function should probably be changed to return SDDL fragments but currently it does not.
    
    オーバーライド:
    
    toString クラス内 Object

クラス ACE

フィールドのサマリー

コンストラクタのサマリー

メソッドのサマリー

クラスから継承されたメソッド java.lang.Object

フィールドの詳細

FILE_READ_DATA

FILE_WRITE_DATA

FILE_APPEND_DATA

FILE_READ_EA

FILE_WRITE_EA

FILE_EXECUTE

FILE_DELETE

FILE_READ_ATTRIBUTES

FILE_WRITE_ATTRIBUTES

DELETE

READ_CONTROL

WRITE_DAC

WRITE_OWNER

SYNCHRONIZE

GENERIC_ALL

GENERIC_EXECUTE

GENERIC_WRITE

GENERIC_READ

FLAGS_OBJECT_INHERIT

FLAGS_CONTAINER_INHERIT

FLAGS_NO_PROPAGATE

FLAGS_INHERIT_ONLY

FLAGS_INHERITED

コンストラクタの詳細

ACE

メソッドの詳細

isAllow

isInherited

getFlags

getApplyToText

getAccessMask

getSID

toString