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Diffstat (limited to 'libjava/java/io/FilePermission.java')
-rw-r--r--libjava/java/io/FilePermission.java292
1 files changed, 0 insertions, 292 deletions
diff --git a/libjava/java/io/FilePermission.java b/libjava/java/io/FilePermission.java
deleted file mode 100644
index 356787b..0000000
--- a/libjava/java/io/FilePermission.java
+++ /dev/null
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-/* FilePermission.java --
- Copyright (C) 1998, 2000, 2003, 2004, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.io;
-
-import java.security.Permission;
-
-public final class FilePermission extends Permission implements Serializable
-{
- private static final long serialVersionUID = 7930732926638008763L;
-
- private static final String CURRENT_DIRECTORY =
- System.getProperty("user.dir");
-
- private static final String ALL_FILES = "<<ALL FILES>>";
-
- private boolean readPerm = false;
- private boolean writePerm = false;
- private boolean executePerm = false;
- private boolean deletePerm = false;
- private final String actionsString;
-
- // Checks and caches the actions
- private void checkPerms() throws IllegalArgumentException
- {
- String action;
- int i = actionsString.indexOf(',');
- int startI = 0;
- while (i != -1)
- {
- action = actionsString.substring(startI, i).trim().toLowerCase();
- if (action.equals("read"))
- readPerm = true;
- else if (action.equals("write"))
- writePerm = true;
- else if (action.equals("execute"))
- executePerm = true;
- else if (action.equals("delete"))
- deletePerm = true;
- else
- throw new IllegalArgumentException("Unknown action: " + action);
-
- startI = i + 1;
- i = actionsString.indexOf(',', startI);
- }
-
- action = actionsString.substring(startI).trim().toLowerCase();
- if (action.equals("read"))
- readPerm = true;
- else if (action.equals("write"))
- writePerm = true;
- else if (action.equals("execute"))
- executePerm = true;
- else if (action.equals("delete"))
- deletePerm = true;
- else
- throw new IllegalArgumentException("Unknown action: " + action);
- }
-
- /**
- * Create a new FilePermission.
- *
- * @param pathExpression an expression specifying the paths this
- * permission represents.
- * @param actionsString a comma-separated list of the actions this
- * permission represents. The actions must be "read", "write",
- * "execute" and/or "delete".
- */
- public FilePermission(String pathExpression, String actionsString)
- {
- // FIXME: what to do when the file string is malformed?
- super(pathExpression);
- if (pathExpression == null)
- throw new NullPointerException("pathExpression");
- if (actionsString == null)
- throw new IllegalArgumentException("actionsString");
- this.actionsString = actionsString;
- checkPerms();
- }
-
- /**
- * Get the actions this FilePermission supports.
- * @return the String representing the actions this FilePermission supports.
- */
- public String getActions()
- {
- return actionsString;
- }
-
- /**
- * Get the hash code for this Object.<P>
- * FilePermission's hash code is calculated as the exclusive or of the
- * target
- * String's hash code and the action String's hash code.
- * @specnote Sun did not specify how to calculate the hash code;
- * I made this up.
- * @return the hash code for this Object.
- */
- public int hashCode()
- {
- return getName().hashCode() ^ actionsString.hashCode();
- }
-
- /**
- * Check two FilePermissions for semantic equality.
- * Two FilePermissions are exactly equivalent if they have identical path
- * expressions and have exactly the same access permissions.
- * @param o the Object to compare to.
- * @return whether the Objects are semantically equivalent.
- */
- public boolean equals(Object o)
- {
- if (! (o instanceof FilePermission))
- return false;
- FilePermission p = (FilePermission) o;
-
- String f1 = getName();
- String f2 = p.getName();
-
- // Compare names, taking into account if they refer to a directory
- // and one has a separator and the other does not.
- if (f1.length() > 0 && f1.charAt(f1.length() - 1) == File.separatorChar)
- {
- if (f2.length() > 0
- && f2.charAt(f2.length() - 1) == File.separatorChar)
- {
- if (! f2.equals(f1))
- return false;
- }
- else
- {
- if (! f2.equals(f1.substring(0, f1.length() - 1)))
- return false;
- }
- }
- else
- {
- if (f2.length() > 0
- && f2.charAt(f2.length() - 1) == File.separatorChar)
- {
- if (! f1.equals(f2.substring(0, f2.length() - 1)))
- return false;
- }
- else
- {
- if (! f1.equals(f2))
- return false;
- }
- }
- return (readPerm == p.readPerm
- && writePerm == p.writePerm
- && executePerm == p.executePerm
- && deletePerm == p.deletePerm);
- }
-
- /**
- * Check to see if this permission implies another.
- * Permission A implies permission B if these things are all true:
- * <OL>
- * <LI>A and B are both FilePermissions.</LI>
- * <LI>All possible files in B are included in A
- * (possibly more are in A).</LI>
- * <LI>All actions B supports, A also supports.</LI>
- * </OL>
- * @param p the Permission to compare against.
- * @return whether this Permission implies p
- */
- public boolean implies(Permission p)
- {
- if (! (p instanceof FilePermission))
- return false;
-
- String f1 = getName();
-
- if (f1.equals(ALL_FILES))
- return true;
-
- FilePermission fp = (FilePermission) p;
- String f2 = fp.getName();
-
- if (f1.charAt(0) != File.separatorChar)
- f1 = CURRENT_DIRECTORY + f1;
- if (f2.charAt(0) != File.separatorChar)
- f2 = CURRENT_DIRECTORY + f2;
-
- String sub1;
-
- switch (f1.charAt(f1.length() - 1))
- {
- case '*':
- sub1 = f1.substring(0, f1.length() - 1); // chop off "*"
- if (f2.length() <= sub1.length())
- {
- // If it's smaller, there is no way it could be part of
- // this directory. If it's the same (or length - 1), it
- // could be the same directory but specifies access to
- // the directory rather than the files in it.
- return false;
- }
- else if (f2.charAt(sub1.length() - 1) == File.separatorChar)
- {
- // Make sure the part before the "/" is the same.
- if (! f2.substring(0, sub1.length()).equals(sub1))
- return false;
- // Make sure there are no subdirectories specified
- // underneath this one.
- if (f2.substring(sub1.length() + 1).indexOf(File.separatorChar)
- != -1)
- return false;
- }
- else
- {
- // Obviously not equal: f2 is either not a directory or
- // is not the same directory (its name continues further
- // than we want).
- return false;
- }
- break;
- case '-':
- // Chop off "/-".
- sub1 = f1.substring(0, f1.length() - 2);
- if (f2.length() < sub1.length())
- {
- // If it's smaller, there is no way it could be part of
- // this directory.
- return false;
- }
- else if (f2.length() > sub1.length()
- && f2.charAt(sub1.length()) != File.separatorChar)
- return false;
- else if (! f2.substring(0, sub1.length()).equals(sub1))
- return false;
- break;
-
- default:
- if (f2.charAt(f2.length() - 1) == File.separatorChar)
- {
- if (! f1.equals(f2.substring(0, f2.length() - 1)))
- return false;
- }
- else if (!f1.equals(f2))
- return false;
- break;
- }
-
- if (readPerm && ! fp.readPerm)
- return false;
- if (writePerm && ! fp.writePerm)
- return false;
- if (executePerm && ! fp.executePerm)
- return false;
- if (deletePerm && ! fp.deletePerm)
- return false;
-
- return true;
- }
-}
generated by cgit v1.1 at 2025-04-24 02:55:11 +0000