1 files changed, 132 insertions, 0 deletions
diff --git a/libjava/java/security/acl/AclEntry.java b/libjava/java/security/acl/AclEntry.java
new file mode 100644
index 00000000000..8741bce53c9
--- /dev/null
+++ b/libjava/java/security/acl/AclEntry.java
@@ -0,0 +1,132 @@
+/* AclEntry.java -- An entry in an ACL list.
+   Copyright (C) 1998 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+02111-1307 USA.
+
+As a special exception, if you link this library with other files to
+produce an executable, this library does not by itself cause the
+resulting executable to be covered by the GNU General Public License.
+This exception does not however invalidate any other reasons why the
+executable file might be covered by the GNU General Public License. */
+
+package java.security.acl;
+
+import java.security.Principal;
+import java.util.Enumeration;
+
+/**
+ * This interface models an entry in an access control list (ACL).  Java
+ * ACL's consist of a list of entries, where each consists of a 
+ * <code>Principal</code> and a list of <code>Permission</code>'s which
+ * have been granted to that <code>Principal</code>.  An ACL can also
+ * be <em>negative</em>, which indicates that the list of 
+ * <code>Permission</code>'s is a list of permissions that are <em>not</em>
+ * granted to the <code>Principal</code>.  A <code>Principal</code> can
+ * have at most one regular (or positive) ACL entry and one negative
+ * ACL entry.
+ *
+ * @version 0.0
+ *
+ * @author Aaron M. Renn (arenn@urbanophile.com)
+ */
+public interface AclEntry extends Cloneable
+{
+ /**
+   * This method returns the <code>Principal</code> associated with this
+   * ACL entry.
+   *
+   * @return The <code>Principal</code> for this ACL entry
+   */
+  public abstract Principal getPrincipal();
+
+  /**
+   * This method sets ths <code>Principal</code> associated with this
+   * ACL entry.  This operation will only succeed if there is not already
+   * a <code>Principal</code> assigned.
+   *
+   * @param user The <code>Principal</code> for this ACL entry
+   *
+   * @return <code>true</code> if the <code>Principal</code> was successfully set or <code>false</code> if this entry already has a <code>Principal</code>.
+   */
+  public abstract boolean setPrincipal(Principal user);
+
+  /**
+   * This method sets this ACL entry to be a <em>negative</em> entry, indicating
+   * that it contains a list of permissions that are <em>not</em> granted
+   * to the entry's <code>Principal</code>.  Note that there is no way to
+   * undo this operation.
+   */
+  public abstract void setNegativePermissions();
+
+  /**
+   * This method tests whether or not this ACL entry is a negative entry or not.
+   *
+   * @return <code>true</code> if this ACL entry is negative, <code>false</code> otherwise
+   */
+  public abstract boolean isNegative();
+
+  /**
+   * This method adds the specified permission to this ACL entry.
+   *
+   * @param perm The <code>Permission</code> to add
+   *
+   * @return <code>true</code> if the permission was added or <code>false</code> if it was already set for this entry
+   */
+  public abstract boolean addPermission(Permission permission);
+
+  /**
+   * This method deletes the specified permission to this ACL entry.
+   *
+   * @param perm The <code>Permission</code> to delete from this ACL entry.
+   *
+   * @return <code>true</code> if the permission was successfully deleted or <code>false</code> if the permission was not part of this ACL to begin with
+   */
+  public abstract boolean removePermission(Permission perm);
+
+  /**
+   * This method tests whether or not the specified permission is associated
+   * with this ACL entry.
+   *
+   * @param perm The <code>Permission</code> to test
+   *
+   * @return <code>true</code> if this permission is associated with this entry or <code>false</code> otherwise
+   */
+  public abstract boolean checkPermission(Permission permission);
+
+  /**
+   * This method returns a list of all <code>Permission</code> objects
+   * associated with this ACL entry as an <code>Enumeration</code>.
+   *
+   * @return A list of permissions for this ACL entry
+   */
+  public abstract Enumeration permissions();
+
+  /**
+   * This method returns this object as a <code>String</code>.
+   *
+   * @return A <code>String</code> representation of this object
+   */
+  public abstract String toString();
+
+  /**
+   * This method returns a clone of this ACL entry
+   *
+   * @return A clone of this ACL entry
+   */
+  public abstract Object clone();
+}