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/**
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* '$RCSfile$'
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* Purpose: A Class that loads eml-access.xml file containing ACL
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* for a metadata document into relational DB
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* Copyright: 2000 Regents of the University of California and the
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* National Center for Ecological Analysis and Synthesis
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* Authors: Jivka Bojilova
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*
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* '$Author: daigle $'
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* '$Date: 2009-08-14 14:22:13 -0700 (Fri, 14 Aug 2009) $'
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* '$Revision: 5025 $'
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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package edu.ucsb.nceas.metacat;
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import java.io.*;
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import java.sql.*;
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import java.util.Stack;
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import java.util.Vector;
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import java.util.Hashtable;
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import java.net.URL;
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import java.net.MalformedURLException;
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import org.apache.log4j.Logger;
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import edu.ucsb.nceas.metacat.database.DBConnection;
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import edu.ucsb.nceas.metacat.database.DBConnectionPool;
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import edu.ucsb.nceas.metacat.util.DocumentUtil;
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/**
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* A Class that loads eml-access.xml file containing ACL for a metadata
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* document into relational DB. It extends DefaultHandler class to handle
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* SAX parsing events when processing the XML stream.
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*/
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public class AccessControlForSingleFile implements AccessControlInterface
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{
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private String docId;
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private String principal;
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private int permission;
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private String permType;
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private String permOrder;
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private Logger logMetacat = Logger.getLogger(AccessControlForSingleFile.class);
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/**
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* Construct an instance of the AccessControlForSingleFile class.
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* @param myAccessNumber the docid or docid with dev will be controlled
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* @param myprincipal the principal will have permission
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* @param myPermission the permission will be given
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* @param myPermType the permsission type, allow or deny
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* @param myPermOrder the permission order, allowFirst or denyFirst
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*/
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public AccessControlForSingleFile(String myAccessionNumber,
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String myPrincipalName,
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String myPermission,
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String myPermType,
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String myPermOrder)
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throws Exception
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{
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try
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{
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//Get rid of dev if myaccessNumber has one;
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docId = DocumentUtil.getDocIdFromString(myAccessionNumber);
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if (docId == null || docId.equals(""))
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{
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throw new Exception("Docid couldn't be null");
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}
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// Check principal
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principal = myPrincipalName;
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if (principal == null || principal.equals(""))
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{
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throw new Exception("principal couldn't be null");
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}
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// get permission value
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permission = AccessControlList.intValue(myPermission);
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if (permission == -1)
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{
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throw new Exception("permission "+ myPermission + " is not valid");
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}
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// check permission type
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permType = myPermType;
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// if permtype is not allow or deny, throw a exception
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if (permType == null
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|| (!permType.equals(AccessControlInterface.ALLOW)
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&& !permType.equals(AccessControlInterface.DENY)))
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{
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throw new Exception("permtype should be "+AccessControlInterface.ALLOW+
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" or " +AccessControlInterface.DENY);
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}
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// check permission order
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permOrder = myPermOrder;
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// If permission order is not allowFirst or denyFirst, default to denyFirst.
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if (permOrder == null || !permOrder.equals(AccessControlInterface.DENYFIRST)) {
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permOrder = AccessControlInterface.ALLOWFIRST;
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}
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//debugMessage
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logMetacat.info("docid in AccessControlForSingleFiel: " +
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docId);
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logMetacat.info("principal in AccessControlForSingleFiel: " +
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principal);
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logMetacat.info("permission in AccessControlForSingleFiel: " +
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permission);
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logMetacat.info("permType in AccessControlForSingleFiel: " +
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permType);
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logMetacat.info("permOrder in AccessControlForSingleFiel: " +
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permOrder);
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}
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catch (Exception e)
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{
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logMetacat.error("Error in construct of AccessControlForSingle" +
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"File for docid: " + docId + " : " + e.getMessage());
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throw e;
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}
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}
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/**
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* Method to insert records into xml_access table
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*/
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public void insertPermissions() throws SQLException
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{
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PreparedStatement pstmt = null;
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DBConnection conn = null;
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int serialNumber = -1;
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try
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{
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//check out DBConnection
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conn=DBConnectionPool.getDBConnection
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("AccessControlForSingleFiel.insertPermissions");
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serialNumber=conn.getCheckOutSerialNumber();
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pstmt = conn.prepareStatement(
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"INSERT INTO xml_access " +
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"(docid, principal_name, permission, perm_type, perm_order " +
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") VALUES (?,?,?,?,?)");
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// Bind the values to the query
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pstmt.setString(1, docId);
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pstmt.setString(2, principal);
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pstmt.setInt(3, permission);
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pstmt.setString(4, permType);
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pstmt.setString(5, permOrder);
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//pstmt.setString(6, AccessControlInterface.ACLID);
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pstmt.execute();
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}//try
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catch (SQLException e)
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{
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logMetacat.error("Error in AccessControlForSingleFile.insert" +
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"Permissions: " + e.getMessage());
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throw e;
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}
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finally
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{
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try
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{
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pstmt.close();
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}
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finally
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{
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DBConnectionPool.returnDBConnection(conn, serialNumber);
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}
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}
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}
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/**
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*
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* @return true if the Access Control for this file already exists in the DB
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* @throws SQLException
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*/
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public boolean accessControlExists() throws SQLException
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{
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boolean exists = false;
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PreparedStatement pstmt = null;
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DBConnection conn = null;
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int serialNumber = -1;
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try
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{
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//check out DBConnection
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conn=DBConnectionPool.getDBConnection
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("AccessControlForSingleFiel.accessControlExists");
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serialNumber=conn.getCheckOutSerialNumber();
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pstmt = conn.prepareStatement(
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"SELECT * FROM xml_access " +
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"WHERE docid = ? " +
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"AND principal_name = ? " +
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"AND permission = ? " +
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"AND perm_type = ? " +
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"AND perm_order =? ");
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// Bind the values to the query
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pstmt.setString(1, docId);
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pstmt.setString(2, principal);
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pstmt.setInt(3, permission);
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pstmt.setString(4, permType);
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pstmt.setString(5, permOrder);
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pstmt.execute();
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ResultSet rs = pstmt.getResultSet();
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exists = rs.next();
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}//try
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catch (SQLException e)
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{
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logMetacat.error("Error in AccessControlForSingleFile.accessControlExists: "
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+ e.getMessage());
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throw e;
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}
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finally
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{
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try
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{
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pstmt.close();
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}
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finally
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{
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DBConnectionPool.returnDBConnection(conn, serialNumber);
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}
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}
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return exists;
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}
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public String getAccessString() {
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StringBuffer sb = new StringBuffer();
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sb.append("<access>");
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sb.append("<permOrder>");
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sb.append(this.permOrder);
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sb.append("</permOrder>");
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sb.append("<permType>");
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sb.append(this.permType);
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sb.append("</permType>");
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sb.append("<permission>");
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sb.append(AccessControlList.txtValue(this.permission));
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sb.append("</permission>");
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sb.append("<principal>");
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sb.append(this.principal);
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sb.append("</principal>");
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sb.append("</access>");
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return sb.toString();
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}
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}
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