| /* |
| * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code 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 |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| package com.sun.jmx.snmp.IPAcl; |
| |
| |
| |
| // java import |
| // |
| import java.io.Serializable; |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileNotFoundException; |
| import java.net.InetAddress; |
| import java.net.UnknownHostException; |
| import java.util.Hashtable; |
| import java.util.logging.Level; |
| import java.util.Vector; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.security.acl.AclEntry; |
| import java.security.acl.NotOwnerException; |
| |
| // SNMP Runtime import |
| // |
| import static com.sun.jmx.defaults.JmxProperties.SNMP_LOGGER; |
| import com.sun.jmx.snmp.InetAddressAcl; |
| |
| /** |
| * Defines an implementation of the {@link com.sun.jmx.snmp.InetAddressAcl InetAddressAcl} interface. |
| * <p> |
| * In this implementation the ACL information is stored on a flat file and |
| * its default location is "$JRE/lib/snmp.acl" - See |
| * {@link #getDefaultAclFileName()} |
| * <p> |
| * <OL> |
| * |
| * <p><b>This API is a Sun Microsystems internal API and is subject |
| * to change without notice.</b></p> |
| */ |
| |
| public class SnmpAcl implements InetAddressAcl, Serializable { |
| private static final long serialVersionUID = -6702287103824397063L; |
| |
| static final PermissionImpl READ = new PermissionImpl("READ"); |
| static final PermissionImpl WRITE = new PermissionImpl("WRITE"); |
| |
| /** |
| * Constructs the Java Dynamic Management(TM) Access Control List |
| * based on IP addresses. The ACL will take the given owner name. |
| * The current IP address will be the owner of the ACL. |
| * |
| * @param Owner The name of the ACL Owner. |
| * |
| * @exception UnknownHostException If the local host is unknown. |
| * @exception IllegalArgumentException If the ACL file doesn't exist. |
| */ |
| public SnmpAcl(String Owner) |
| throws UnknownHostException, IllegalArgumentException { |
| this(Owner,null); |
| } |
| |
| /** |
| * Constructs the Java Dynamic Management(TM) Access Control List |
| * based on IP addresses. The ACL will take the given owner name. |
| * The current IP address will be the owner of the ACL. |
| * |
| * @param Owner The name of the ACL Owner. |
| * @param aclFileName The name of the ACL File. |
| * |
| * @exception UnknownHostException If the local host is unknown. |
| * @exception IllegalArgumentException If the ACL file doesn't exist. |
| */ |
| public SnmpAcl(String Owner, String aclFileName) |
| throws UnknownHostException, IllegalArgumentException { |
| trapDestList= new Hashtable<InetAddress, Vector<String>>(); |
| informDestList= new Hashtable<InetAddress, Vector<String>>(); |
| |
| // PrincipalImpl() take the current host as entry |
| owner = new PrincipalImpl(); |
| try { |
| acl = new AclImpl(owner,Owner); |
| AclEntry ownEntry = new AclEntryImpl(owner); |
| ownEntry.addPermission(READ); |
| ownEntry.addPermission(WRITE); |
| acl.addEntry(owner,ownEntry); |
| } catch (NotOwnerException ex) { |
| if (SNMP_LOGGER.isLoggable(Level.FINEST)) { |
| SNMP_LOGGER.logp(Level.FINEST, SnmpAcl.class.getName(), |
| "SnmpAcl(String,String)", |
| "Should never get NotOwnerException as the owner " + |
| "is built in this constructor"); |
| } |
| } |
| if (aclFileName == null) setDefaultFileName(); |
| else setAuthorizedListFile(aclFileName); |
| readAuthorizedListFile(); |
| } |
| |
| /** |
| * Returns an enumeration of the entries in this ACL. Each element in the |
| * enumeration is of type <CODE>java.security.acl.AclEntry</CODE>. |
| * |
| * @return An enumeration of the entries in this ACL. |
| */ |
| public Enumeration entries() { |
| return acl.entries(); |
| } |
| |
| /** |
| * Returns ann enumeration of community strings. Community strings are returned as String. |
| * @return The enumeration of community strings. |
| */ |
| public Enumeration<String> communities() { |
| HashSet<String> set = new HashSet<String>(); |
| Vector<String> res = new Vector<String>(); |
| for (Enumeration e = acl.entries() ; e.hasMoreElements() ;) { |
| AclEntryImpl entry = (AclEntryImpl) e.nextElement(); |
| for (Enumeration cs = entry.communities(); |
| cs.hasMoreElements() ;) { |
| set.add((String) cs.nextElement()); |
| } |
| } |
| String[] objs = set.toArray(new String[0]); |
| for(int i = 0; i < objs.length; i++) |
| res.addElement(objs[i]); |
| |
| return res.elements(); |
| } |
| |
| /** |
| * Returns the name of the ACL. |
| * |
| * @return The name of the ACL. |
| */ |
| public String getName() { |
| return acl.getName(); |
| } |
| |
| /** |
| * Returns the read permission instance used. |
| * |
| * @return The read permission instance. |
| */ |
| static public PermissionImpl getREAD() { |
| return READ; |
| } |
| |
| /** |
| * Returns the write permission instance used. |
| * |
| * @return The write permission instance. |
| */ |
| static public PermissionImpl getWRITE() { |
| return WRITE; |
| } |
| |
| /** |
| * Get the default name for the ACL file. |
| * In this implementation this is "$JRE/lib/snmp.acl" |
| * @return The default name for the ACL file. |
| **/ |
| public static String getDefaultAclFileName() { |
| final String fileSeparator = |
| System.getProperty("file.separator"); |
| final StringBuffer defaultAclName = |
| new StringBuffer(System.getProperty("java.home")). |
| append(fileSeparator).append("lib").append(fileSeparator). |
| append("snmp.acl"); |
| return defaultAclName.toString(); |
| } |
| |
| /** |
| * Sets the full path of the file containing the ACL information. |
| * |
| * @param filename The full path of the file containing the ACL information. |
| * @throws IllegalArgumentException If the passed ACL file doesn't exist. |
| */ |
| public void setAuthorizedListFile(String filename) |
| throws IllegalArgumentException { |
| File file = new File(filename); |
| if (!file.isFile() ) { |
| if (SNMP_LOGGER.isLoggable(Level.FINEST)) { |
| SNMP_LOGGER.logp(Level.FINEST, SnmpAcl.class.getName(), |
| "setAuthorizedListFile", "ACL file not found: " + filename); |
| } |
| throw new |
| IllegalArgumentException("The specified file ["+file+"] "+ |
| "doesn't exist or is not a file, "+ |
| "no configuration loaded"); |
| } |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "setAuthorizedListFile", "Default file set to " + filename); |
| } |
| authorizedListFile = filename; |
| } |
| |
| /** |
| * Resets this ACL to the values contained in the configuration file. |
| * |
| * @exception NotOwnerException If the principal attempting the reset is not an owner of this ACL. |
| * @exception UnknownHostException If IP addresses for hosts contained in the ACL file couldn't be found. |
| */ |
| public void rereadTheFile() throws NotOwnerException, UnknownHostException { |
| alwaysAuthorized = false; |
| acl.removeAll(owner); |
| trapDestList.clear(); |
| informDestList.clear(); |
| AclEntry ownEntry = new AclEntryImpl(owner); |
| ownEntry.addPermission(READ); |
| ownEntry.addPermission(WRITE); |
| acl.addEntry(owner,ownEntry); |
| readAuthorizedListFile(); |
| } |
| |
| /** |
| * Returns the full path of the file used to get ACL information. |
| * |
| * @return The full path of the file used to get ACL information. |
| */ |
| public String getAuthorizedListFile() { |
| return authorizedListFile; |
| } |
| |
| /** |
| * Checks whether or not the specified host has <CODE>READ</CODE> access. |
| * |
| * @param address The host address to check. |
| * |
| * @return <CODE>true</CODE> if the host has read permission, <CODE>false</CODE> otherwise. |
| */ |
| public boolean checkReadPermission(InetAddress address) { |
| if (alwaysAuthorized) return ( true ); |
| PrincipalImpl p = new PrincipalImpl(address); |
| return acl.checkPermission(p, READ); |
| } |
| |
| /** |
| * Checks whether or not the specified host and community have <CODE>READ</CODE> access. |
| * |
| * @param address The host address to check. |
| * @param community The community associated with the host. |
| * |
| * @return <CODE>true</CODE> if the pair (host, community) has read permission, <CODE>false</CODE> otherwise. |
| */ |
| public boolean checkReadPermission(InetAddress address, String community) { |
| if (alwaysAuthorized) return ( true ); |
| PrincipalImpl p = new PrincipalImpl(address); |
| return acl.checkPermission(p, community, READ); |
| } |
| |
| /** |
| * Checks whether or not a community string is defined. |
| * |
| * @param community The community to check. |
| * |
| * @return <CODE>true</CODE> if the community is known, <CODE>false</CODE> otherwise. |
| */ |
| public boolean checkCommunity(String community) { |
| return acl.checkCommunity(community); |
| } |
| |
| /** |
| * Checks whether or not the specified host has <CODE>WRITE</CODE> access. |
| * |
| * @param address The host address to check. |
| * |
| * @return <CODE>true</CODE> if the host has write permission, <CODE>false</CODE> otherwise. |
| */ |
| public boolean checkWritePermission(InetAddress address) { |
| if (alwaysAuthorized) return ( true ); |
| PrincipalImpl p = new PrincipalImpl(address); |
| return acl.checkPermission(p, WRITE); |
| } |
| |
| /** |
| * Checks whether or not the specified host and community have <CODE>WRITE</CODE> access. |
| * |
| * @param address The host address to check. |
| * @param community The community associated with the host. |
| * |
| * @return <CODE>true</CODE> if the pair (host, community) has write permission, <CODE>false</CODE> otherwise. |
| */ |
| public boolean checkWritePermission(InetAddress address, String community) { |
| if (alwaysAuthorized) return ( true ); |
| PrincipalImpl p = new PrincipalImpl(address); |
| return acl.checkPermission(p, community, WRITE); |
| } |
| |
| /** |
| * Returns an enumeration of trap destinations. |
| * |
| * @return An enumeration of the trap destinations (enumeration of <CODE>InetAddress</CODE>). |
| */ |
| public Enumeration getTrapDestinations() { |
| return trapDestList.keys(); |
| } |
| |
| /** |
| * Returns an enumeration of trap communities for a given host. |
| * |
| * @param i The address of the host. |
| * |
| * @return An enumeration of trap communities for a given host (enumeration of <CODE>String</CODE>). |
| */ |
| public Enumeration getTrapCommunities(InetAddress i) { |
| Vector list = null; |
| if ((list = (Vector)trapDestList.get(i)) != null ) { |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "getTrapCommunities", "["+i.toString()+"] is in list"); |
| } |
| return list.elements(); |
| } else { |
| list = new Vector(); |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "getTrapCommunities", "["+i.toString()+"] is not in list"); |
| } |
| return list.elements(); |
| } |
| } |
| |
| /** |
| * Returns an enumeration of inform destinations. |
| * |
| * @return An enumeration of the inform destinations (enumeration of <CODE>InetAddress</CODE>). |
| */ |
| public Enumeration getInformDestinations() { |
| return informDestList.keys(); |
| } |
| |
| /** |
| * Returns an enumeration of inform communities for a given host. |
| * |
| * @param i The address of the host. |
| * |
| * @return An enumeration of inform communities for a given host (enumeration of <CODE>String</CODE>). |
| */ |
| public Enumeration getInformCommunities(InetAddress i) { |
| Vector list = null; |
| if ((list = (Vector)informDestList.get(i)) != null ) { |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "getInformCommunities", "["+i.toString()+"] is in list"); |
| } |
| return list.elements(); |
| } else { |
| list = new Vector(); |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "getInformCommunities", "["+i.toString()+"] is not in list"); |
| } |
| return list.elements(); |
| } |
| } |
| |
| /** |
| * Converts the input configuration file into ACL. |
| */ |
| private void readAuthorizedListFile() { |
| |
| alwaysAuthorized = false; |
| |
| if (authorizedListFile == null) { |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", "alwaysAuthorized set to true"); |
| } |
| alwaysAuthorized = true ; |
| } else { |
| // Read the file content |
| Parser parser = null; |
| try { |
| parser= new Parser(new FileInputStream(getAuthorizedListFile())); |
| } catch (FileNotFoundException e) { |
| if (SNMP_LOGGER.isLoggable(Level.FINEST)) { |
| SNMP_LOGGER.logp(Level.FINEST, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", |
| "The specified file was not found, authorize everybody"); |
| } |
| alwaysAuthorized = true ; |
| return; |
| } |
| |
| try { |
| JDMSecurityDefs n = parser.SecurityDefs(); |
| n.buildAclEntries(owner, acl); |
| n.buildTrapEntries(trapDestList); |
| n.buildInformEntries(informDestList); |
| } catch (ParseException e) { |
| if (SNMP_LOGGER.isLoggable(Level.FINEST)) { |
| SNMP_LOGGER.logp(Level.FINEST, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", "Got parsing exception", e); |
| } |
| throw new IllegalArgumentException(e.getMessage()); |
| } catch (Error err) { |
| if (SNMP_LOGGER.isLoggable(Level.FINEST)) { |
| SNMP_LOGGER.logp(Level.FINEST, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", "Got unexpected error", err); |
| } |
| throw new IllegalArgumentException(err.getMessage()); |
| } |
| |
| for(Enumeration e = acl.entries(); e.hasMoreElements();) { |
| AclEntryImpl aa = (AclEntryImpl) e.nextElement(); |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", |
| "===> " + aa.getPrincipal().toString()); |
| } |
| for (Enumeration eee = aa.permissions();eee.hasMoreElements();) { |
| java.security.acl.Permission perm = (java.security.acl.Permission)eee.nextElement(); |
| if (SNMP_LOGGER.isLoggable(Level.FINER)) { |
| SNMP_LOGGER.logp(Level.FINER, SnmpAcl.class.getName(), |
| "readAuthorizedListFile", "perm = " + perm); |
| } |
| } |
| } |
| } |
| } |
| |
| /** |
| * Set the default full path for "snmp.acl" input file. |
| * Do not complain if the file does not exists. |
| */ |
| private void setDefaultFileName() { |
| try { |
| setAuthorizedListFile(getDefaultAclFileName()); |
| } catch (IllegalArgumentException x) { |
| // OK... |
| } |
| } |
| |
| |
| // PRIVATE VARIABLES |
| //------------------ |
| |
| /** |
| * Represents the Access Control List. |
| */ |
| private AclImpl acl = null; |
| /** |
| * Flag indicating whether the access is always authorized. |
| * <BR>This is the case if there is no flat file defined. |
| */ |
| private boolean alwaysAuthorized = false; |
| /** |
| * Represents the Access Control List flat file. |
| */ |
| private String authorizedListFile = null; |
| /** |
| * Contains the hosts list for trap destination. |
| */ |
| private Hashtable<InetAddress, Vector<String>> trapDestList = null; |
| /** |
| * Contains the hosts list for inform destination. |
| */ |
| private Hashtable<InetAddress, Vector<String>> informDestList = null; |
| |
| private PrincipalImpl owner = null; |
| } |