+++ /dev/null
-/* SocketPermission.java -- Class modeling permissions for socket operations
- Copyright (C) 1998, 2000, 2001 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.
-
-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.net;
-
-import java.security.Permission;
-import java.security.PermissionCollection;
-
-/**
- * This class models a specific set of permssions for connecting to a
- * host. There are two elements to this, the host/port combination and
- * the permission list.
- * <p>
- * The host/port combination is specified as followed
- * <p>
- * <pre>
- * hostname[:[-]port[-[port]]]
- * </pre>
- * <p>
- * The hostname portion can be either a hostname or IP address. If it is
- * a hostname, a wildcard is allowed in hostnames. This wildcard is a "*"
- * and matches one or more characters. Only one "*" may appear in the
- * host and it must be the leftmost character. For example,
- * "*.urbanophile.com" matches all hosts in the "urbanophile.com" domain.
- * <p>
- * The port portion can be either a single value, or a range of values
- * treated as inclusive. The first or the last port value in the range
- * can be omitted in which case either the minimum or maximum legal
- * value for a port (respectively) is used by default. Here are some
- * examples:
- * <p><ul>
- * <li>8080 - Represents port 8080 only
- * <li>2000-3000 - Represents ports 2000 through 3000 inclusive
- * <li>-4000 - Represents ports 0 through 4000 inclusive
- * <li>1024- - Represents ports 1024 through 65535 inclusive
- * </ul><p>
- * The permission list is a comma separated list of individual permissions.
- * These individual permissions are:
- * <p>
- * accept<br>
- * connect<br>
- * listen<br>
- * resolve<br>
- * <p>
- * The "listen" permission is only relevant if the host is localhost. If
- * any permission at all is specified, then resolve permission is implied to
- * exist.
- * <p>
- * Here are a variety of examples of how to create SocketPermission's
- * <p><pre>
- * SocketPermission("www.urbanophile.com", "connect");
- * Can connect to any port on www.urbanophile.com
- * SocketPermission("www.urbanophile.com:80", "connect,accept");
- * Can connect to or accept connections from www.urbanophile.com on port 80
- * SocketPermission("localhost:1024-", "listen,accept,connect");
- * Can connect to, accept from, an listen on any local port number 1024 and up.
- * SocketPermission("*.edu", "connect");
- * Can connect to any host in the edu domain
- * SocketPermission("197.197.20.1", "accept");
- * Can accept connections from 197.197.20.1
- * </pre><p>
- *
- * @since 1.2
- *
- * @author Aaron M. Renn (arenn@urbanophile.com)
- */
-public final class SocketPermission extends Permission
- implements java.io.Serializable
-{
-
-// FIXME: Needs serialization work, including readObject/writeObject methods.
- /**
- * A hostname/port combination as described above
- */
- private transient String hostport;
-
- /**
- * A comma separated list of actions for which we have permission
- */
- private String actions;
-
- /**
- * Initializes a new instance of <code>SocketPermission</code> with the
- * specified host/port combination and actions string.
- *
- * @param hostport The hostname/port number combination
- * @param perms The actions string
- */
- public SocketPermission(String hostport, String actions)
- {
- super(hostport);
-
- this.hostport = hostport;
- this.actions = actions;
- }
-
- /**
- * Tests this object for equality against another. This will be true if
- * and only if the passed object is an instance of
- * <code>SocketPermission</code> and both its hostname/port combination
- * and permissions string are identical.
- *
- * @param obj The object to test against for equality
- *
- * @return <code>true</code> if object is equal to this object,
- * <code>false</code> otherwise.
- */
- public boolean equals(Object obj)
- {
- if (obj == null)
- return (false);
-
- if (!(obj instanceof SocketPermission))
- return (false);
-
- if (((SocketPermission) obj).hostport.equals(hostport))
- if (((SocketPermission) obj).actions.equals(actions))
- return (true);
-
- return (false);
- }
-
- /**
- * Returns a hash code value for this object. Overrides the
- * Permission.hashCode()
- *
- * @return A hash code
- */
- public int hashCode()
- {
- int hash = 100;
-
- // FIXME: Get a real hash function
- for (int i = 0; i < hostport.length(); i++)
- hash = hash + (int) hostport.charAt(i) * 7;
-
- return (hash);
- }
-
- /**
- * Returns the list of permission actions in this object in canonical
- * order. The canonical order is "connect,listen,accept,resolve"
- *
- * @return The permitted action string.
- */
- public String getActions()
- {
- boolean found = false;
- StringBuffer sb = new StringBuffer("");
-
- if (actions.indexOf("connect") != -1)
- {
- sb.append("connect");
- found = true;
- }
-
- if (actions.indexOf("listen") != -1)
- if (found)
- sb.append(",listen");
- else
- {
- sb.append("listen");
- found = true;
- }
-
- if (actions.indexOf("accept") != -1)
- if (found)
- sb.append(",accept");
- else
- {
- sb.append("accept");
- found = true;
- }
-
- if (found)
- sb.append(",resolve");
- else if (actions.indexOf("resolve") != -1)
- sb.append("resolve");
-
- return (sb.toString());
- }
-
- /**
- * Returns a new <code>PermissionCollection</code> object that can hold
- * <code>SocketPermission</code>'s.
- *
- * @return A new <code>PermissionCollection</code>.
- */
- public PermissionCollection newPermissionCollection()
- {
- // FIXME: Implement
-
- return (null);
- }
-
- /**
- * Returns true if the permission object passed it is implied by the
- * this permission. This will be true if
- * <p><ul>
- * <li>The argument is of type SocketPermission
- * <li>The actions list of the argument are in this object's actions
- * <li>The port range of the argument is within this objects port range
- * <li>The hostname is equal to or a subset of this objects hostname
- * </ul>
- * <p>
- * The argument's hostname will be a subset of this object's hostname if:
- * <p><ul>
- * <li>The argument's hostname or IP address is equal to this object's.
- * <li>The argument's canonical hostname is equal to this object's.
- * <li>The argument's canonical name matches this domains hostname with wildcards
- * </ul>
- *
- * @param perm The Permission to check against
- *
- * @return <code>true</code> if the <code>Permission</code> is implied by
- * this object, <code>false</code> otherwise.
- */
- public boolean implies(Permission perm)
- {
- SocketPermission p;
-
- // First make sure we are the right object type
- if (perm instanceof SocketPermission)
- p = (SocketPermission) perm;
- else
- return (false);
-
- // Next check the actions
- String ourlist = getActions();
- String theirlist = p.getActions();
-
- if (!ourlist.startsWith(theirlist))
- return (false);
-
- // Now check ports
- int ourfirstport = 0, ourlastport = 0, theirfirstport = 0, theirlastport =
- 0;
-
- // Get ours
- if (hostport.indexOf(":") == -1)
- {
- ourfirstport = 0;
- ourlastport = 65535;
- }
- else
- {
- // FIXME: Needs bulletproofing.
- // This will dump if hostport if all sorts of bad data was passed to
- // the constructor
- String range = hostport.substring(hostport.indexOf(":") + 1);
- if (range.startsWith("-"))
- ourfirstport = 0;
- else if (range.indexOf("-") == -1)
- ourfirstport = Integer.parseInt(range);
- else
- ourfirstport =
- Integer.parseInt(range.substring(0, range.indexOf("-")));
-
- if (range.endsWith("-"))
- ourlastport = 65535;
- else if (range.indexOf("-") == -1)
- ourlastport = Integer.parseInt(range);
- else
- ourlastport =
- Integer.parseInt(range.
- substring(range.indexOf("-") + 1,
- range.length()));
- }
-
- // Get theirs
- if (p.hostport.indexOf(":") == -1)
- {
- theirfirstport = 0;
- ourlastport = 65535;
- }
- else
- {
- // This will dump if hostport if all sorts of bad data was passed to
- // the constructor
- String range = p.hostport.substring(hostport.indexOf(":") + 1);
- if (range.startsWith("-"))
- theirfirstport = 0;
- else if (range.indexOf("-") == -1)
- theirfirstport = Integer.parseInt(range);
- else
- theirfirstport =
- Integer.parseInt(range.substring(0, range.indexOf("-")));
-
- if (range.endsWith("-"))
- theirlastport = 65535;
- else if (range.indexOf("-") == -1)
- theirlastport = Integer.parseInt(range);
- else
- theirlastport =
- Integer.parseInt(range.
- substring(range.indexOf("-") + 1,
- range.length()));
- }
-
- // Now check them
- if ((theirfirstport < ourfirstport) || (theirlastport > ourlastport))
- return (false);
-
- // Finally we can check the hosts
- String ourhost, theirhost;
-
- // Get ours
- if (hostport.indexOf(":") == -1)
- ourhost = hostport;
- else
- ourhost = hostport.substring(0, hostport.indexOf(":"));
-
- // Get theirs
- if (p.hostport.indexOf(":") == -1)
- theirhost = p.hostport;
- else
- theirhost = p.hostport.substring(0, p.hostport.indexOf(":"));
-
- // Are they equal?
- if (ourhost.equals(theirhost))
- return (true);
-
- // Try the canonical names
- String ourcanonical = null, theircanonical = null;
- try
- {
- ourcanonical = InetAddress.getByName(ourhost).getHostName();
- theircanonical = InetAddress.getByName(theirhost).getHostName();
- }
- catch (UnknownHostException e)
- {
- // Who didn't resolve? Just assume current address is canonical enough
- // Is this ok to do?
- if (ourcanonical == null)
- ourcanonical = ourhost;
- if (theircanonical == null)
- theircanonical = theirhost;
- }
-
- if (ourcanonical.equals(theircanonical))
- return (true);
-
- // Well, last chance. Try for a wildcard
- if (ourhost.indexOf("*.") != -1)
- {
- String wild_domain = ourhost.substring(ourhost.indexOf("*" + 1));
- if (theircanonical.endsWith(wild_domain))
- return (true);
- }
-
- // Didn't make it
- return (false);
- }
-}
projects / msp430-gcc.git / blobdiff