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/*******************************************************************************
* Copyright (c) 2013 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.authentication.ldap.internal;
import static org.eclipse.osee.authentication.ldap.internal.util.LdapUtil.getValue;
import static org.eclipse.osee.authentication.ldap.internal.util.LdapUtil.patternField;
import static org.eclipse.osee.authentication.ldap.internal.util.LdapUtil.stringField;
import java.io.Closeable;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Set;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.directory.Attribute;
import javax.naming.directory.Attributes;
import javax.naming.directory.DirContext;
import javax.naming.directory.InitialDirContext;
import javax.security.auth.login.AccountException;
import org.eclipse.osee.authentication.ldap.LdapAuthenticationType;
import org.eclipse.osee.authentication.ldap.LdapSearchScope;
import org.eclipse.osee.authentication.ldap.internal.filter.ActiveDirectoryLdapFilter;
import org.eclipse.osee.authentication.ldap.internal.filter.Rfc2307CompliantLdapFilter;
import org.eclipse.osee.authentication.ldap.internal.util.LdapEntry;
import org.eclipse.osee.authentication.ldap.internal.util.LdapQuery;
import org.eclipse.osee.authentication.ldap.internal.util.LdapUtil;
import org.eclipse.osee.authentication.ldap.internal.util.VariablePattern;
import org.eclipse.osee.framework.jdk.core.type.ResultSet;
import org.eclipse.osee.framework.jdk.core.util.Strings;
import org.eclipse.osee.logger.Log;
/**
* @author Roberto E. Escobar
*/
public class LdapConnection implements Closeable {
private static final LdapFilter RFC_2307_LDAP_FILTER = new Rfc2307CompliantLdapFilter();
private static final LdapFilter ACTIVE_DIRECTORY_LDAP_FILTER = new ActiveDirectoryLdapFilter();
private static final String LDAP_CAPABILITIES__ATTRIBUTE_ID = "supportedCapabilities";
private static final String LDAP_CAPABILITIES__ACTIVE_DIRECTORY_OID = "1.2.840.113556.1.4.800";
private static final String LDAP_CAPABILITIES__ACTIVE_DIRECTORY_APPLICATION_MODE_OID = "1.2.840.113556.1.4.1851";
private final Log logger;
private final DirContext connection;
private final ContextConfigProvider provider;
private LdapFilter defaultFilterSettings;
public LdapConnection(Log logger, ContextConfigProvider provider, DirContext connection) {
this.logger = logger;
this.provider = provider;
this.connection = connection;
}
private String getServerAddress() {
return provider.getServerAddress();
}
@Override
public void close() {
close(connection);
}
public LdapFilter getDefaultFilter() {
if (defaultFilterSettings == null) {
boolean isActiveDirectory = false;
try {
isActiveDirectory = hasActiveDirectoryCapabilities();
} catch (NamingException ex) {
logger.warn(ex,
"Unable to determine LDAP server capabilities for [%s] defaulting to RFC-2307 compliant LDAP.",
getServerAddress());
}
if (isActiveDirectory) {
defaultFilterSettings = ACTIVE_DIRECTORY_LDAP_FILTER;
} else {
defaultFilterSettings = RFC_2307_LDAP_FILTER;
}
}
return defaultFilterSettings;
}
private boolean hasActiveDirectoryCapabilities() throws NamingException {
Attributes rootAtts = connection.getAttributes("");
Attribute attribute = rootAtts.get(LDAP_CAPABILITIES__ATTRIBUTE_ID);
return attribute != null && //
(attribute.contains(LDAP_CAPABILITIES__ACTIVE_DIRECTORY_OID) || //
attribute.contains(LDAP_CAPABILITIES__ACTIVE_DIRECTORY_APPLICATION_MODE_OID));
}
public boolean authenticate(String username, String password) throws AccountException {
Hashtable<String, String> env = provider.getContextConfig();
env.put(Context.SECURITY_AUTHENTICATION, LdapAuthenticationType.SIMPLE.getContextAuthenticationName());
env.put(Context.SECURITY_PRINCIPAL, getValue(username, ""));
env.put(Context.SECURITY_CREDENTIALS, getValue(password, ""));
boolean result = false;
DirContext connection = null;
try {
connection = new InitialDirContext(env);
result = true;
} catch (NamingException ex) {
throw new AccountException("Incorrect userName or password");
} finally {
close(connection);
}
return result;
}
private void close(DirContext connection) {
if (connection != null) {
try {
connection.close();
} catch (NamingException ex) {
logger.error(ex, "Error closing LDAP connected to [%s]", getServerAddress());
}
}
}
public LdapAccount findAccount(LdapFilter filter, String username) throws NamingException {
LdapFilter defaultFilter = getDefaultFilter();
String usernameVariableName =
LdapUtil.getValue(filter.getUserNameVariableName(), defaultFilter.getUserNameVariableName());
String searchBase = LdapUtil.getValue(filter.getAccountBase(), defaultFilter.getAccountBase());
LdapSearchScope accountSearchScope =
LdapUtil.getValue(filter.getAccountSearchScope(), defaultFilter.getAccountSearchScope());
Set<String> fieldsToGet = new HashSet<String>();
VariablePattern accountSearchPattern =
patternField(fieldsToGet, filter.getAccountPattern(), defaultFilter.getAccountPattern());
VariablePattern accountFullName =
patternField(fieldsToGet, filter.getAccountDisplayName(), defaultFilter.getAccountDisplayName());
VariablePattern accountEmailAddress =
patternField(fieldsToGet, filter.getAccountEmailAddress(), defaultFilter.getAccountEmailAddress());
VariablePattern accountUserName =
patternField(fieldsToGet, filter.getAccountUserName(), defaultFilter.getAccountUserName());
String memberOfField = stringField(fieldsToGet, filter.getGroupMembersOf(), defaultFilter.getGroupMembersOf());
boolean memberOfFieldInAccount = Strings.isValid(memberOfField) || defaultFilter.isGroupMembershipPartOfAccount();
if (memberOfFieldInAccount) {
VariablePattern groupByGroupMemberPattern =
patternField(fieldsToGet, filter.getGroupByGroupMemberPattern(),
defaultFilter.getGroupByGroupMemberPattern());
if (groupByGroupMemberPattern != null) {
for (String variables : groupByGroupMemberPattern.getVariableNames()) {
fieldsToGet.add(variables);
}
}
}
LdapQuery query = new LdapQuery(logger)//
.base(searchBase)//
.pattern(accountSearchPattern)//
.fields(fieldsToGet)//
.scope(accountSearchScope);
HashMap<String, String> params = new HashMap<String, String>();
params.put(usernameVariableName, username);
ResultSet<LdapEntry> results = query.search(connection, params);
LdapEntry entry = results.getExactlyOne();
return new LdapAccount(entry, accountFullName, accountEmailAddress, accountUserName);
}
public Set<LdapGroup> findGroups(LdapFilter filter, String username) throws NamingException {
return findGroups(filter, username, null);
}
public Set<LdapGroup> findGroups(LdapFilter filter, String username, LdapAccount account) throws NamingException {
LdapFilter defaultFilter = getDefaultFilter();
String usernameVariableName =
LdapUtil.getValue(filter.getUserNameVariableName(), defaultFilter.getUserNameVariableName());
String searchBase = LdapUtil.getValue(filter.getGroupBase(), defaultFilter.getGroupBase());
LdapSearchScope groupSearchScope =
LdapUtil.getValue(filter.getGroupSearchScope(), defaultFilter.getGroupSearchScope());
Set<String> fieldsToGet = new HashSet<String>();
VariablePattern groupNamePattern = patternField(fieldsToGet, filter.getGroupName(), defaultFilter.getGroupName());
VariablePattern groupByGroupMemberPattern =
patternField(fieldsToGet, filter.getGroupByGroupMemberPattern(), defaultFilter.getGroupByGroupMemberPattern());
// In account on in group trees
String memberOfField = LdapUtil.getValue(filter.getGroupMembersOf(), defaultFilter.getGroupMembersOf());
ResultSet<LdapEntry> results;
boolean isGroupMembershipInAccount =
groupByGroupMemberPattern == null || defaultFilter.isGroupMembershipPartOfAccount();
if (isGroupMembershipInAccount) {
throw new UnsupportedOperationException("Not yet implemented");
} else {
LdapQuery query = new LdapQuery(logger) //
.base(searchBase)//
.pattern(groupByGroupMemberPattern)//
.fields(fieldsToGet)//
.scope(groupSearchScope);
HashMap<String, String> params = new HashMap<String, String>();
for (String key : query.getParameters()) {
String value = account.getField(key);
if (Strings.isValid(value)) {
params.put(key, value);
}
}
params.put(usernameVariableName, username);
results = query.search(connection, params);
}
Set<LdapGroup> groups = new HashSet<LdapGroup>();
Set<String> groupDns = new HashSet<String>();
for (LdapEntry entry : results) {
findSubGroups(groups, groupDns, groupNamePattern, memberOfField, entry);
}
return groups;
}
private void findSubGroups(Set<LdapGroup> groups, Set<String> groupDns, VariablePattern groupNamePattern, String memberOfField, LdapEntry entry) throws NamingException {
String currentGroupDn = entry.getDistinguishedName();
boolean wasAdded = groupDns.add(currentGroupDn);
if (wasAdded) {
LdapGroup group = new LdapGroup(entry, groupNamePattern);
groups.add(group);
if (Strings.isValid(memberOfField)) {
throw new UnsupportedOperationException("Not yet implemented");
}
}
}
}
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