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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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* '$Author$'
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* '$Date$'
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* '$Revision$'
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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.accesscontrol;
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import java.io.IOException;
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import java.io.StringReader;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.Vector;
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daigle
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sgarg
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import org.apache.log4j.Logger;
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daigle
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import org.xml.sax.ContentHandler;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.XMLReader;
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import org.xml.sax.helpers.XMLReaderFactory;
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import edu.ucsb.nceas.metacat.DocInfoHandler;
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import edu.ucsb.nceas.metacat.McdbException;
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import edu.ucsb.nceas.metacat.PermissionController;
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daigle
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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.properties.PropertyService;
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import edu.ucsb.nceas.metacat.shared.AccessException;
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daigle
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import edu.ucsb.nceas.metacat.util.DocumentUtil;
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import edu.ucsb.nceas.utilities.PropertyNotFoundException;
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55 |
4080
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daigle
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56 |
1365
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tao
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/**
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57 |
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* A Class that loads eml-access.xml file containing ACL for a metadata
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58 |
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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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64 |
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private String _docId;
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|
sgarg
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private Logger logMetacat = Logger.getLogger(AccessControlForSingleFile.class);
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67 |
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68 |
5115
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/**
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69 |
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* Construct an instance of the AccessControlForSingleFile class. This
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70 |
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* instance will represent one file only.
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*
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* @param myAccessNumber
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73 |
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* the docid or docid with dev will be controlled
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*/
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public AccessControlForSingleFile(String accessionNumber)
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throws AccessControlException {
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daigle
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// Get rid of dev if myaccessNumber has one;
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_docId = DocumentUtil.getDocIdFromString(accessionNumber);
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if (_docId == null || _docId.equals("")) {
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throw new AccessControlException("AccessControlForSingleFile() - Accession number "
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+ "can't be null in constructor");
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}
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logMetacat.debug("AccessControlForSingleFile() - docid: " + _docId);
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}
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88 |
5098
|
daigle
|
/**
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* Insert a single access record into the database based on access DAO
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90 |
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* object
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91 |
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*
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92 |
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* @param xmlAccessDAO
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* dao object holding info to insert
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94 |
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*/
|
95 |
5109
|
daigle
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public void insertPermissions(XMLAccessDAO xmlAccessDAO)
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throws AccessControlException, PermOrderException{
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daigle
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insertPermissions(xmlAccessDAO.getPrincipalName(), xmlAccessDAO.getPermission(),
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xmlAccessDAO.getPermType(), xmlAccessDAO.getPermOrder());
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}
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/**
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* Insert a single access record into the database.
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103 |
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*
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104 |
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* @param principalName
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105 |
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|
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|
* the principal credentials
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106 |
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* @param permission
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* the permission
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* @param permType
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* the permission type
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5098
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daigle
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* @param permOrder
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111 |
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* the permission order
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112 |
5098
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daigle
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*/
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113 |
5109
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daigle
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public void insertPermissions(String principalName, Long permission, String permType, String permOrder)
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114 |
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throws AccessControlException, PermOrderException {
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115 |
5089
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daigle
|
try {
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116 |
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// The addXMLAccess method will create the permission record if it does not exist.
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// It will bitwise OR to permissions if the principal already has a record for this
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// doc id.
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XMLAccessAccess xmlAccessAccess = new XMLAccessAccess();
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120 |
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xmlAccessAccess.addXMLAccess(_docId, principalName, new Long(permission), permType, permOrder);
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5089
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} catch (AccessException ae) {
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122 |
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throw new AccessControlException("AccessControlForSingleFile.insertPermissions - "
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+ "DB access error when inserting permissions: " + ae.getMessage());
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124 |
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}
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125 |
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}
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126 |
4419
|
leinfelder
|
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127 |
5098
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daigle
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/**
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128 |
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* Replace existing permissions with a given block of permissions for this
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129 |
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* document.
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5089
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|
*
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131 |
5098
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daigle
|
* @param accessBlock
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132 |
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* the xml access block. This is the same structure as that
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133 |
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* returned by the getdocumentinfo action in metacat.
|
134 |
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*/
|
135 |
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public void insertPermissions(String accessBlock) throws AccessControlException {
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136 |
5115
|
daigle
|
try {
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137 |
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// use DocInfoHandler to parse the access section into DAO objects
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138 |
5098
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daigle
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XMLReader parser = null;
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139 |
5109
|
daigle
|
DocInfoHandler docInfoHandler = new DocInfoHandler(_docId);
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140 |
5098
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daigle
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ContentHandler chandler = docInfoHandler;
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141 |
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|
|
142 |
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// Get an instance of the parser
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143 |
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String parserName = PropertyService.getProperty("xml.saxparser");
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144 |
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parser = XMLReaderFactory.createXMLReader(parserName);
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145 |
|
|
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146 |
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// Turn off validation
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147 |
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parser.setFeature("http://xml.org/sax/features/validation", false);
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148 |
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parser.setContentHandler((ContentHandler)chandler);
|
149 |
|
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parser.setErrorHandler((ErrorHandler)chandler);
|
150 |
|
|
|
151 |
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parser.parse(new InputSource(new StringReader(accessBlock)));
|
152 |
|
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153 |
5099
|
daigle
|
XMLAccessAccess xmlAccessAccess = new XMLAccessAccess();
|
154 |
5115
|
daigle
|
|
155 |
|
|
// replace all access on the document
|
156 |
5098
|
daigle
|
Vector<XMLAccessDAO> accessControlList = docInfoHandler.getAccessControlList();
|
157 |
5109
|
daigle
|
xmlAccessAccess.replaceAccess(_docId, accessControlList);
|
158 |
|
|
|
159 |
5098
|
daigle
|
} catch (PropertyNotFoundException pnfe) {
|
160 |
|
|
throw new AccessControlException("AccessControlForSingleFile.insertPermissions - "
|
161 |
5099
|
daigle
|
+ "property error when replacing permissions: " + pnfe.getMessage());
|
162 |
|
|
} catch (AccessException ae) {
|
163 |
|
|
throw new AccessControlException("AccessControlForSingleFile.insertPermissions - "
|
164 |
|
|
+ "DB access error when replacing permissions: " + ae.getMessage());
|
165 |
5098
|
daigle
|
} catch (SAXException se) {
|
166 |
|
|
throw new AccessControlException("AccessControlForSingleFile.insertPermissions - "
|
167 |
5099
|
daigle
|
+ "SAX error when replacing permissions: " + se.getMessage());
|
168 |
5098
|
daigle
|
} catch(IOException ioe) {
|
169 |
|
|
throw new AccessControlException("AccessControlForSingleFile.insertPermissions - "
|
170 |
5099
|
daigle
|
+ "I/O error when replacing permissions: " + ioe.getMessage());
|
171 |
5098
|
daigle
|
}
|
172 |
|
|
}
|
173 |
|
|
|
174 |
|
|
/**
|
175 |
5115
|
daigle
|
* Check if access control comination for
|
176 |
|
|
* docid/principal/permission/permorder/permtype already exists.
|
177 |
5098
|
daigle
|
*
|
178 |
5115
|
daigle
|
* @param xmlAccessDAO
|
179 |
|
|
* the dao object holding the access we want to check for.
|
180 |
5089
|
daigle
|
* @return true if the Access Control for this file already exists in the DB
|
181 |
|
|
*/
|
182 |
5098
|
daigle
|
public boolean accessControlExists(XMLAccessDAO xmlAccessDAO) throws AccessControlException {
|
183 |
|
|
boolean exists = false;
|
184 |
|
|
PreparedStatement pstmt = null;
|
185 |
|
|
DBConnection conn = null;
|
186 |
|
|
int serialNumber = -1;
|
187 |
|
|
try {
|
188 |
|
|
//check out DBConnection
|
189 |
|
|
conn=DBConnectionPool.getDBConnection
|
190 |
4450
|
leinfelder
|
("AccessControlForSingleFiel.accessControlExists");
|
191 |
5098
|
daigle
|
serialNumber=conn.getCheckOutSerialNumber();
|
192 |
|
|
pstmt = conn.prepareStatement(
|
193 |
|
|
"SELECT * FROM xml_access " +
|
194 |
|
|
"WHERE docid = ? " +
|
195 |
|
|
"AND principal_name = ? " +
|
196 |
|
|
"AND permission = ? " +
|
197 |
|
|
"AND perm_type = ? " +
|
198 |
|
|
"AND perm_order =? ");
|
199 |
4450
|
leinfelder
|
|
200 |
5098
|
daigle
|
// Bind the values to the query
|
201 |
5099
|
daigle
|
pstmt.setString(1, _docId);
|
202 |
5098
|
daigle
|
pstmt.setString(2, xmlAccessDAO.getPrincipalName());
|
203 |
|
|
pstmt.setLong(3, xmlAccessDAO.getPermission());
|
204 |
|
|
pstmt.setString(4, xmlAccessDAO.getPermType());
|
205 |
|
|
pstmt.setString(5, xmlAccessDAO.getPermOrder());
|
206 |
4450
|
leinfelder
|
|
207 |
5098
|
daigle
|
pstmt.execute();
|
208 |
|
|
ResultSet rs = pstmt.getResultSet();
|
209 |
|
|
exists = rs.next();
|
210 |
4450
|
leinfelder
|
|
211 |
5098
|
daigle
|
} catch (SQLException sqle){
|
212 |
|
|
throw new AccessControlException("AccessControlForSingleFile.accessControlExists - SQL error when " +
|
213 |
|
|
"checking if access control exists: " + sqle.getMessage());
|
214 |
|
|
} finally {
|
215 |
|
|
try {
|
216 |
|
|
if(pstmt != null) {
|
217 |
|
|
pstmt.close();
|
218 |
|
|
}
|
219 |
|
|
} catch (SQLException sqle) {
|
220 |
|
|
logMetacat.error("AccessControlForSingleFile.accessControlExists - Could not close " +
|
221 |
|
|
"prepared statement: " +sqle.getMessage());
|
222 |
|
|
} finally {
|
223 |
|
|
DBConnectionPool.returnDBConnection(conn, serialNumber);
|
224 |
|
|
}
|
225 |
|
|
}
|
226 |
4450
|
leinfelder
|
|
227 |
5098
|
daigle
|
return exists;
|
228 |
|
|
}
|
229 |
4450
|
leinfelder
|
|
230 |
5098
|
daigle
|
/**
|
231 |
|
|
* Get Access Control List information for document from db connetion. User
|
232 |
|
|
* or Group should have permissions for reading access control information
|
233 |
|
|
* for a document specified by
|
234 |
|
|
*
|
235 |
|
|
* @param user
|
236 |
|
|
* name of user connected to Metacat system
|
237 |
|
|
* @param groups
|
238 |
|
|
* names of user's groups to which user belongs
|
239 |
|
|
*/
|
240 |
5099
|
daigle
|
public String getACL(String user, String[] groups)
|
241 |
5098
|
daigle
|
throws AccessControlException {
|
242 |
|
|
StringBuffer output = new StringBuffer();
|
243 |
|
|
boolean hasPermission = false;
|
244 |
1365
|
tao
|
|
245 |
5099
|
daigle
|
try {
|
246 |
5115
|
daigle
|
hasPermission = isOwned(user);
|
247 |
5098
|
daigle
|
if (!hasPermission) {
|
248 |
5099
|
daigle
|
PermissionController controller = new PermissionController(_docId);
|
249 |
5098
|
daigle
|
hasPermission =
|
250 |
|
|
controller.hasPermission(user, groups, READSTRING);
|
251 |
|
|
}
|
252 |
1365
|
tao
|
|
253 |
5115
|
daigle
|
// if the user has permissions, get the access dao list for this doc and return
|
254 |
|
|
// it as a string. Otherwise, get the string for an empty access dao list
|
255 |
|
|
// (which will return the access section with no allow or deny sections)
|
256 |
5098
|
daigle
|
if (hasPermission) {
|
257 |
5099
|
daigle
|
// Get a list of all access dao objects for this docid
|
258 |
|
|
XMLAccessAccess xmlAccessAccess = new XMLAccessAccess();
|
259 |
|
|
Vector<XMLAccessDAO> xmlAccessDAOList = xmlAccessAccess.getXMLAccessForDoc(_docId);
|
260 |
|
|
output.append(getAccessString(xmlAccessDAOList));
|
261 |
|
|
} else {
|
262 |
|
|
output.append(getAccessString(new Vector<XMLAccessDAO>()));
|
263 |
5098
|
daigle
|
}
|
264 |
4419
|
leinfelder
|
|
265 |
5098
|
daigle
|
return output.toString();
|
266 |
|
|
|
267 |
|
|
} catch (SQLException sqle) {
|
268 |
|
|
throw new AccessControlException("AccessControlForSingleFile.getACL() - SQL error when " +
|
269 |
|
|
"getting ACL: " + sqle.getMessage());
|
270 |
|
|
} catch (AccessException ae) {
|
271 |
|
|
throw new AccessControlException("AccessControlForSingleFile.getACL() - DB access error when " +
|
272 |
|
|
"getting ACL: " + ae.getMessage());
|
273 |
|
|
} catch (McdbException mcdb) {
|
274 |
|
|
throw new AccessControlException("AccessControlForSingleFile.getACL() - MCDB error when " +
|
275 |
|
|
"getting ACL: " + mcdb.getMessage());
|
276 |
|
|
}
|
277 |
|
|
}
|
278 |
|
|
|
279 |
5115
|
daigle
|
/**
|
280 |
|
|
* Get the access xml for all access on this docid
|
281 |
|
|
*
|
282 |
|
|
* @return string representation of access
|
283 |
|
|
*/
|
284 |
5098
|
daigle
|
public String getAccessString() throws AccessControlException {
|
285 |
|
|
Vector<XMLAccessDAO> xmlAccessDAOList = null;
|
286 |
|
|
|
287 |
|
|
try {
|
288 |
|
|
// Get a list of all access dao objects for this docid
|
289 |
|
|
XMLAccessAccess xmlAccessAccess = new XMLAccessAccess();
|
290 |
5099
|
daigle
|
xmlAccessDAOList = xmlAccessAccess.getXMLAccessForDoc(_docId);
|
291 |
5098
|
daigle
|
} catch (AccessException ae) {
|
292 |
|
|
throw new AccessControlException("AccessControlForSingleFile.getAccessString() - DB access error when " +
|
293 |
|
|
"getting access string: " + ae.getMessage());
|
294 |
|
|
}
|
295 |
|
|
|
296 |
5099
|
daigle
|
return getAccessString(xmlAccessDAOList);
|
297 |
5098
|
daigle
|
}
|
298 |
|
|
|
299 |
5115
|
daigle
|
/**
|
300 |
|
|
* Put together an xml representation of the objects in a given access dao list
|
301 |
|
|
* @param xmlAccessDAOList list of xml access DAO objects
|
302 |
|
|
* @return string representation of access
|
303 |
|
|
*/
|
304 |
5099
|
daigle
|
public String getAccessString(Vector<XMLAccessDAO> xmlAccessDAOList) throws AccessControlException {
|
305 |
5098
|
daigle
|
|
306 |
|
|
StringBuffer output = new StringBuffer();
|
307 |
|
|
StringBuffer tmpOutput = new StringBuffer();
|
308 |
|
|
StringBuffer allowOutput = new StringBuffer();
|
309 |
|
|
StringBuffer denyOutput = new StringBuffer();
|
310 |
|
|
|
311 |
|
|
String principal = null;
|
312 |
|
|
int permission = -1;
|
313 |
|
|
String permOrder = ALLOWFIRST;
|
314 |
|
|
String permType = null;
|
315 |
|
|
|
316 |
|
|
// We assume that all the records will have the same permission order, so we can just
|
317 |
|
|
// grab the perm order from the first one.
|
318 |
|
|
if (xmlAccessDAOList.size() > 0) {
|
319 |
|
|
permOrder = xmlAccessDAOList.get(0).getPermOrder();
|
320 |
|
|
}
|
321 |
|
|
|
322 |
5099
|
daigle
|
output.append("<access authSystem=\"knb\" order=\"" + permOrder + "\" id=\"" + _docId + "\" scope=\"document\"");
|
323 |
5098
|
daigle
|
|
324 |
|
|
output.append(">\n");
|
325 |
|
|
|
326 |
|
|
for (XMLAccessDAO xmlAccessDAO : xmlAccessDAOList) {
|
327 |
|
|
principal = xmlAccessDAO.getPrincipalName();
|
328 |
|
|
permission = xmlAccessDAO.getPermission().intValue();
|
329 |
|
|
permType = xmlAccessDAO.getPermType();
|
330 |
|
|
|
331 |
|
|
tmpOutput.append(" <" + permType + ">\n");
|
332 |
|
|
tmpOutput.append(" <principal>" + principal + "</principal>\n");
|
333 |
|
|
|
334 |
|
|
if ((permission & READ) == READ) {
|
335 |
|
|
tmpOutput.append(" <permission>read</permission>\n");
|
336 |
|
|
}
|
337 |
|
|
if ((permission & WRITE) == WRITE) {
|
338 |
|
|
tmpOutput.append(" <permission>write</permission>\n");
|
339 |
|
|
}
|
340 |
|
|
if ((permission & ALL) == ALL) {
|
341 |
|
|
tmpOutput.append(" <permission>all</permission>\n");
|
342 |
|
|
}
|
343 |
|
|
if ((permission & CHMOD) == CHMOD) {
|
344 |
|
|
tmpOutput.append(" <permission>chmod</permission>\n");
|
345 |
|
|
}
|
346 |
|
|
|
347 |
|
|
tmpOutput.append(" </" + permType + ">\n");
|
348 |
|
|
|
349 |
|
|
if (permType.equals(ALLOW)) {
|
350 |
|
|
allowOutput.append(tmpOutput);
|
351 |
|
|
} else if (permType.equals(DENY)) {
|
352 |
|
|
denyOutput.append(tmpOutput);
|
353 |
|
|
}
|
354 |
|
|
tmpOutput = new StringBuffer();
|
355 |
|
|
}
|
356 |
|
|
|
357 |
|
|
// This just orders the allow/deny sections based on the permOrder. Not
|
358 |
|
|
// required, but convenient later when parsing the output.
|
359 |
|
|
if (permOrder.equals(ALLOWFIRST)) {
|
360 |
|
|
output.append(allowOutput);
|
361 |
|
|
output.append(denyOutput);
|
362 |
|
|
} else if (permOrder.equals(DENYFIRST)) {
|
363 |
|
|
output.append(denyOutput);
|
364 |
|
|
output.append(allowOutput);
|
365 |
|
|
}
|
366 |
|
|
|
367 |
5099
|
daigle
|
output.append("</access>");
|
368 |
5098
|
daigle
|
|
369 |
|
|
return output.toString();
|
370 |
|
|
}
|
371 |
|
|
|
372 |
5115
|
daigle
|
/**
|
373 |
|
|
* check if the docid represented in this class is owned by the user
|
374 |
|
|
*
|
375 |
|
|
* @param user
|
376 |
|
|
* the user credentials
|
377 |
|
|
* @return true if doc is owned by user, false otherwise
|
378 |
|
|
*/
|
379 |
|
|
private boolean isOwned(String user) throws SQLException {
|
380 |
5098
|
daigle
|
PreparedStatement pstmt = null;
|
381 |
|
|
DBConnection conn = null;
|
382 |
|
|
int serialNumber = -1;
|
383 |
|
|
try {
|
384 |
|
|
// check out DBConnection
|
385 |
|
|
conn = DBConnectionPool.getDBConnection("AccessControlList.isOwned");
|
386 |
|
|
serialNumber = conn.getCheckOutSerialNumber();
|
387 |
|
|
pstmt = conn.prepareStatement("SELECT 'x' FROM xml_documents "
|
388 |
|
|
+ "WHERE docid = ? " + "AND user_owner = ?");
|
389 |
5115
|
daigle
|
pstmt.setString(1, _docId);
|
390 |
5098
|
daigle
|
pstmt.setString(2, user);
|
391 |
|
|
pstmt.execute();
|
392 |
|
|
ResultSet rs = pstmt.getResultSet();
|
393 |
|
|
boolean hasRow = rs.next();
|
394 |
|
|
return hasRow;
|
395 |
|
|
} finally {
|
396 |
|
|
try {
|
397 |
|
|
if (pstmt != null) {
|
398 |
|
|
pstmt.close();
|
399 |
|
|
}
|
400 |
|
|
} finally {
|
401 |
|
|
DBConnectionPool.returnDBConnection(conn, serialNumber);
|
402 |
|
|
}
|
403 |
|
|
}
|
404 |
|
|
}
|
405 |
1365
|
tao
|
}
|