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Internet2 Groups Management Toolkit
/**
* Copyright 2014 Internet2
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* ========================================================================
* Copyright (c) 2009-2011 The University of Washington
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* ========================================================================
*/
/*
* Ldap subject adapter
* @author fox
*/
package edu.internet2.middleware.subject.provider;
import java.lang.reflect.Array;
import java.util.Collection;
import java.util.Comparator;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Properties;
import java.util.Set;
import java.util.TreeSet;
import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import edu.internet2.middleware.grouper.ldap.LdapAttribute;
import edu.internet2.middleware.grouper.ldap.LdapEntry;
import edu.internet2.middleware.grouper.ldap.LdapSearchScope;
import edu.internet2.middleware.grouper.ldap.LdapSessionUtils;
import edu.internet2.middleware.grouper.util.GrouperUtil;
import edu.internet2.middleware.grouperClient.util.GrouperClientUtils;
import edu.internet2.middleware.subject.SearchPageResult;
import edu.internet2.middleware.subject.SourceUnavailableException;
import edu.internet2.middleware.subject.Subject;
import edu.internet2.middleware.subject.SubjectCaseInsensitiveMapImpl;
import edu.internet2.middleware.subject.SubjectNotFoundException;
import edu.internet2.middleware.subject.SubjectNotUniqueException;
import edu.internet2.middleware.subject.SubjectTooManyResults;
import edu.internet2.middleware.subject.SubjectUtils;
/**
* Ldap source adapter.
*/
public class LdapSourceAdapter extends BaseSourceAdapter {
@Override
public void loggingStart() {
LdapSessionUtils.logStart();
}
@Override
public String loggingStop() {
return LdapSessionUtils.logEnd();
}
private static Log log = edu.internet2.middleware.grouper.util.GrouperUtil.getLog(LdapSourceAdapter.class);
private Properties props;
protected String subjectIDAttributeName = null;
protected boolean subjectIDFormatToLowerCase = false;
private String ldapServerId = null;
private boolean multipleResults = false;
private String[] allAttributeNames;
private boolean throwErrorOnFindAllFailure;
/** if there is a limit to the number of results */
private Integer maxResults;
/** if error if limit is reached */
private boolean errorOnMaxResults = true;
/** if there is a limit to the number of results */
private Integer maxPage;
/**
*
*/
public LdapSourceAdapter() {
super();
}
/**
* @param id
* @param name
*/
public LdapSourceAdapter(String id, String name) {
super(id, name);
}
/**
* {@inheritDoc}
*/
public void init() {
log.debug("ldap source init");
props = initParams();
ldapServerId = getNeededProperty(props, "ldapServerId");
nameAttributeName = getNeededProperty(props,"Name_AttributeType");
subjectIDAttributeName = getNeededProperty(props,"SubjectID_AttributeType");
descriptionAttributeName = getNeededProperty(props,"Description_AttributeType");
// if this is the new source config then dereference the subject attributes with the source
// columns or ldap attributes
subjectIDAttributeName = convertSubjectAttributeToSourceAttribute(subjectIDAttributeName);
descriptionAttributeName = convertSubjectAttributeToSourceAttribute(descriptionAttributeName);
nameAttributeName = convertSubjectAttributeToSourceAttribute(nameAttributeName);
subjectIDFormatToLowerCase = SubjectUtils.booleanValue(props.getProperty("SubjectID_formatToLowerCase"), false);
String mr = props.getProperty("Multiple_Results");
if (mr!=null && (mr.equalsIgnoreCase("yes")||mr.equalsIgnoreCase("true"))) multipleResults = true;
Set attributeNameSet = this.getAttributes();
if (!this.isEditable()) {
allAttributeNames = new String[3+attributeNameSet.size()];
allAttributeNames[0] = nameAttributeName;
allAttributeNames[1] = subjectIDAttributeName;
allAttributeNames[2] = descriptionAttributeName;
int i = 0;
for (Iterator it = attributeNameSet.iterator(); it.hasNext(); allAttributeNames[3+i++]= (String) it.next());
} else {
allAttributeNames = GrouperUtil.toArray(attributeNameSet, String.class);
}
Map virtualAttributes = SubjectUtils.nonNull(BaseSourceAdapter.virtualAttributesForSourceLegacy(this));
// GRP-1669: grouper sends virtual attribute names to ldap
//take out dupes and virtuals
Set attributeSet = SubjectUtils.toSet(allAttributeNames);
attributeSet.removeAll(virtualAttributes.keySet());
allAttributeNames = toArray(attributeSet, String.class);
String throwErrorOnFindAllFailureString = this.getInitParam("throwErrorOnFindAllFailure");
throwErrorOnFindAllFailure = SubjectUtils.booleanValue(throwErrorOnFindAllFailureString, true);
{
String maxPageString = props.getProperty("maxPageSize");
if (!StringUtils.isBlank(maxPageString)) {
try {
this.maxPage = Integer.parseInt(maxPageString);
} catch (NumberFormatException nfe) {
throw new SourceUnavailableException("Cant parse maxPage: " + maxPageString, nfe);
}
}
}
{
String maxResultsString = props.getProperty("maxResults");
if (!StringUtils.isBlank(maxResultsString)) {
try {
this.maxResults = Integer.parseInt(maxResultsString);
} catch (NumberFormatException nfe) {
throw new SourceUnavailableException("Cant parse maxResults: " + maxResultsString, nfe);
}
}
}
{
String errorOnMaxResultsString = props.getProperty("errorOnMaxResults");
if (!StringUtils.isBlank(errorOnMaxResultsString)) {
this.errorOnMaxResults = SubjectUtils.booleanValue(errorOnMaxResultsString, true);
}
}
}
/**
* convert a list into an array of type of theClass
* @param is the type of the array
* @param collection list to convert
* @param theClass type of array to return
* @return array of type theClass[] filled with the objects from list
*/
@SuppressWarnings("unchecked")
public static T[] toArray(Collection collection, Class theClass) {
if (collection == null || collection.size() == 0) {
return null;
}
return (T[])collection.toArray((Object[]) Array.newInstance(theClass,
collection.size()));
}
/**
* {@inheritDoc}
*/
@Override
public Subject getSubject(String id, boolean exceptionIfNull)
throws SubjectNotFoundException,SubjectNotUniqueException {
Subject subject = null;
Search search = getSearch("searchSubject");
if (search == null) {
log.error("searchType: \"searchSubject\" not defined.");
return subject;
}
try {
LdapEntry entry = getLdapUnique( search, id, allAttributeNames );
subject = createSubject(entry);
if (subject == null && exceptionIfNull) {
throw new SubjectNotFoundException("Subject " + id + " not found.");
}
} catch (SubjectNotFoundException e) {
if (exceptionIfNull) throw e;
}
return subject;
}
/**
* {@inheritDoc}
* @deprecated
*/
@Deprecated
@Override
public Subject getSubject(String id) throws SubjectNotFoundException, SubjectNotUniqueException {
return this.getSubject(id, true);
}
/**
* {@inheritDoc}
*/
@Override
public Subject getSubjectByIdentifier(String id, boolean exceptionIfNull)
throws SubjectNotFoundException, SubjectNotUniqueException {
Map debugLog = null;
try {
if (log.isDebugEnabled()) {
debugLog = new LinkedHashMap();
debugLog.put("method", "getSubjectByIdentifier");
debugLog.put("id", id);
debugLog.put("exceptionIfNull", exceptionIfNull);
}
Subject subject = null;
Search search = getSearch("searchSubjectByIdentifier");
if (debugLog != null) {
debugLog.put("search", search);
}
if (search == null) {
log.error("searchType: \"searchSubjectByIdentifier\" not defined.");
return subject;
}
try {
LdapEntry entry = getLdapUnique(search, id, allAttributeNames);
subject = createSubject(entry);
if (debugLog != null) {
debugLog.put("foundSubject", subject != null);
}
if (subject == null && exceptionIfNull) {
throw new SubjectNotFoundException("Subject " + id + " not found.");
}
} catch (SubjectNotFoundException e) {
if (exceptionIfNull) {
throw e;
}
return null;
}
search = getSearch("searchSubjectByIdentifierAttributes");
if (debugLog != null) {
debugLog.put("searchSubjectByIdentifierAttributesNotNull", search!=null);
}
return subject;
} finally {
if (log.isDebugEnabled()) {
log.debug(SubjectUtils.mapToString(debugLog));
}
}
}
/**
* {@inheritDoc}
* @deprecated
*/
@Deprecated
@Override
public Subject getSubjectByIdentifier(String id) throws SubjectNotFoundException, SubjectNotUniqueException {
return this.getSubjectByIdentifier(id, true);
}
/**
* @see edu.internet2.middleware.subject.provider.BaseSourceAdapter#searchPage(java.lang.String)
*/
@Override
public SearchPageResult searchPage(String searchValue) {
return searchHelper(searchValue, true);
}
/**
* {@inheritDoc}
*/
@Override
public Set search(String searchValue) {
return searchHelper(searchValue, false).getResults();
}
/**
* @param searchValue
* @return the set
*/
private SearchPageResult searchHelper(String searchValue, boolean firstPageOnly) {
boolean tooManyResults = false;
Comparator cp = new LdapComparator();
TreeSet result = new TreeSet(cp);
Search search = getSearch("search");
if (search == null) {
log.error("searchType: \"search\" not defined.");
return new SearchPageResult(tooManyResults, result);
}
Search searchA = getSearch("searchAttributes");
boolean noAttrSearch = true;
if (searchA!=null) noAttrSearch = false;
try {
Iterator ldapResults = getLdapResultsHelper(search,searchValue, allAttributeNames, firstPageOnly);
if (ldapResults == null) {
return new SearchPageResult(tooManyResults, result);
}
while ( ldapResults.hasNext()) {
//if we are at the end of the page
if (firstPageOnly && this.maxPage != null && result.size() >= this.maxPage) {
tooManyResults = true;
break;
}
if (this.maxResults != null && result.size() >= this.maxResults) {
if (!errorOnMaxResults) {
break;
}
throw new SubjectTooManyResults(
"More results than allowed: " + this.maxResults
+ " for search '" + searchValue + "'");
}
LdapEntry si = ldapResults.next();
Subject subject = createSubject(si);
if (subject != null) {
result.add(subject);
} else {
log.error("Failed to create subject with attributes: " + si.toString());
}
}
if (log.isDebugEnabled()) {
log.debug("set has " + result.size() + " subjects");
if (result.size()>0) log.debug("first is " + ((Subject)result.first()).getName());
}
} catch (Exception ex) {
if (ex instanceof SubjectTooManyResults) {
throw (SubjectTooManyResults)ex;
}
if (throwErrorOnFindAllFailure) {
throw new SourceUnavailableException(ex.getMessage() + ", source: " + this.getId() + ", sql: " + search.getParam("sql"), ex);
}
log.error("LDAP Naming Except: " + ex.getMessage() + ", " + this.id + ", " + searchValue, ex);
}
return new SearchPageResult(tooManyResults, result);
}
/**
* @param attributes
*/
public Subject createSubject(LdapEntry entry) {
String subjectID = "";
if (entry==null) {
log.error("Ldap createSubject called with null entry.");
return (null);
}
LdapAttribute attribute = entry.getAttribute(subjectIDAttributeName);
if (attribute == null || attribute.getStringValues().size() == 0) {
log.error("No value for LDAP attribute \"" + subjectIDAttributeName + "\". It is Grouper attribute \"SubjectID\".\". Subject's problematic attributes : " + entry.toString());
return null;
}
subjectID = attribute.getStringValues().iterator().next();
if (this.subjectIDFormatToLowerCase) {
subjectID = subjectID.toLowerCase();
}
SubjectImpl subject = new SubjectImpl(subjectID, null, null, this.getSubjectType().getName(), this.getId(), nameAttributeName, descriptionAttributeName);
// add the attributes
Map> myAttributes = new SubjectCaseInsensitiveMapImpl>();
for (Iterator e = entry.getAttributes().iterator(); e.hasNext();) {
LdapAttribute attr = e.next();
String attrName = attr.getName();
attrName = convertSourceAttributeToSubjectAttribute(attrName);
Set values = new HashSet();
values.addAll(attr.getStringValues());
myAttributes.put(attrName, values);
}
subject.setAttributes(myAttributes);
return subject;
}
protected String getNeededProperty(Properties props, String prop) {
String value = props.getProperty(prop);
if (value==null) {
log.error("Property '" + prop + "' is not defined!");
}
return (value);
}
/**
* Try to get more attributes for the subject.
* @param subject
*/
protected Map> getAllAttributes(SubjectImpl subject) {
Map> attributes = new SubjectCaseInsensitiveMapImpl>();
if (log.isDebugEnabled()) {
log.debug("getAllAttributes for " + subject.getName());
}
Search search = getSearch("searchSubjectAttributes");
if (search == null) {
log.debug("searchType: \"searchSubjectAttributes\" not defined.");
return attributes;
}
try {
LdapEntry entry = getLdapUnique(search,subject.getName(), allAttributeNames);
for (Iterator e = entry.getAttributes().iterator(); e.hasNext();) {
LdapAttribute attr = e.next();
String attrName = attr.getName();
Set values = new HashSet();
values.addAll(attr.getStringValues());
attributes.put(attrName, values);
}
subject.setAttributes(attributes);
} catch (SubjectNotFoundException ex ) {
log.error("SubjectNotFound: "+ subject.getId() +" " + ex.getMessage(), ex);
} catch (SubjectNotUniqueException ex ) {
log.error("SubjectNotUnique: "+ subject.getId() +" " + ex.getMessage(), ex);
}
return attributes;
}
protected Iterator getLdapResults(Search search, String searchValue, String[] attributeNames) {
return getLdapResultsHelper(search, searchValue, attributeNames, false);
}
private Iterator getLdapResultsHelper(Search search, String searchValue, String[] attributeNames, boolean firstPageOnly ) {
if (searchValue == null ) {
return null;
}
SubjectStatusResult subjectStatusResult = null;
//if this is a search and not by id or identifier
boolean subjectStatusQuery = StringUtils.equals("search", search.getSearchType());
if (subjectStatusQuery) {
//see if we are doing status
SubjectStatusProcessor subjectStatusProcessor = new SubjectStatusProcessor(searchValue, this.getSubjectStatusConfig());
subjectStatusResult = subjectStatusProcessor.processSearch();
//strip out status parts
searchValue = subjectStatusResult.getStrippedQuery();
}
String filter = null;
Iterator results = null;
int cp;
String aff = null;
// build a filter
if ((cp=searchValue.indexOf(',')) >0 ) {
int lb, rb;
if ( (lb=searchValue.indexOf('['))>cp && (rb=searchValue.indexOf(']'))>lb ) {
aff = searchValue.substring(lb+1, rb);
searchValue = searchValue.substring(0, lb);
// log.debug("first, last [" + aff + "] search: " + searchValue);
filter = search.getParam("affiliationfilter");
} else {
// log.debug("first, last search: " + searchValue);
filter = search.getParam("firstlastfilter");
}
if (filter==null) filter = search.getParam("filter"); // fall back
if (filter==null) {
log.error("Search filter not found for search type: " + search.getSearchType());
return null;
}
String last = searchValue.substring(0, cp);
String first = searchValue.substring(cp+1);
if (last!=null) filter = GrouperClientUtils.replace(filter, "%LAST%", escapeSearchFilter(last));
if (first!=null) filter = GrouperClientUtils.replace(filter, "%FIRST%", escapeSearchFilter(first));
if (aff!=null) filter = GrouperClientUtils.replace(filter, "%AFFILIATION%", escapeSearchFilter(aff));
} else {
// simple search
filter = search.getParam("filter");
if (filter==null) {
log.error("Search filter not found for search type: " + search.getSearchType());
return results;
}
filter = GrouperClientUtils.replace(filter, "%TERM%", escapeSearchFilter(searchValue));
}
String preStatusFilter = filter;
if (subjectStatusQuery && !subjectStatusResult.isAll() && !StringUtils.isBlank(subjectStatusResult.getDatastoreFieldName())) {
//validate the status value
if (!subjectStatusResult.getDatastoreValue().matches("[a-zA-Z0-9_-]+")) {
throw new RuntimeException("Invalid status value: " + subjectStatusResult.getDatastoreValue());
}
//wrap the query in a status part
filter = "(&" + filter + "(" + (subjectStatusResult.isEquals()?"":" ! ( ") + subjectStatusResult.getDatastoreFieldName() + "="
+ subjectStatusResult.getDatastoreValue() + (subjectStatusResult.isEquals()?"":" ) ") + "))";
}
if (!StringUtils.equals(preStatusFilter, filter)) {
if (log.isDebugEnabled()) {
log.debug("searchType: " + search.getSearchType() + ", preStatusFilter: " + preStatusFilter + ", filter: " + filter);
}
} else {
if (log.isDebugEnabled()) {
log.debug("searchType: " + search.getSearchType() + ", filter: " + filter);
}
}
try {
Integer resultSetLimit = resultSetLimit(firstPageOnly, this.getMaxPage(), this.maxResults);
Integer sizeLimit = null;
if (resultSetLimit != null) {
sizeLimit = resultSetLimit + 1;
}
// get params
String base = search.getParam("base");
String searchScopeString = search.getParam("scope");
LdapSearchScope searchScope = null;
if (searchScopeString != null) {
searchScope = LdapSearchScope.valueOf(searchScopeString);
}
if (StringUtils.isEmpty(ldapServerId)) {
throw new SourceUnavailableException("Missing property subjectApi.source." + this.id + ".param.ldapServerId.value in subject.properties. "
+ "The value of this property should point to your LDAP configuration in the grouper-loader.properties file. "
+ "e.g. if your grouper-loader.properties has ldap.personLdap.url, then the value of this property would be personLdap.");
}
results = LdapSessionUtils.ldapSession().list(ldapServerId, base, searchScope, filter, attributeNames, sizeLimit).iterator();
} catch (Exception ex) { // don't know if there are others
log.error("Ldap Exception: " + ex.getMessage(), ex);
throw new SourceUnavailableException("Ldap Exception: " + ex.getMessage(), ex);
}
return results;
}
protected LdapEntry getLdapUnique( Search search, String searchValue, String[] attributeNames)
throws SubjectNotFoundException,SubjectNotUniqueException, SourceUnavailableException {
Map debugLog = null;
try {
if (log.isDebugEnabled()) {
debugLog = new LinkedHashMap();
debugLog.put("method", "getLdapUnique");
debugLog.put("search", search);
debugLog.put("searchValue", searchValue);
debugLog.put("attributeNames", SubjectUtils.toStringForLog(attributeNames, 200));
}
Iterator results = getLdapResults(search, searchValue, attributeNames);
if (results == null || !results.hasNext()) {
String errMsg = "No results: " + search.getSearchType() + " filter:" + search.getParam("filter") + " searchValue: " + searchValue;
throw new SubjectNotFoundException( errMsg);
}
LdapEntry overall = results.next();
if (debugLog!=null) {
debugLog.put("dn", overall.getDn());
}
// Add the DN to the returned attributes.
LdapAttribute dnAttribute = new LdapAttribute("dn");
dnAttribute.addStringValue(overall.getDn());
overall.addAttribute(dnAttribute);
if (results.hasNext()) {
LdapEntry si = results.next();
if (debugLog!=null) {
debugLog.put("dn2", si.getDn());
}
if (!multipleResults) {
if (debugLog!=null) {
debugLog.put("searchIsNotUnique", true);
}
String errMsg ="Search is not unique:" + si.getDn() + "\n";
throw new SubjectNotUniqueException( errMsg );
}
Iterator n = si.getAttributes().iterator();
while (n.hasNext()) {
LdapAttribute a = n.next();
if (log.isDebugEnabled()) {
log.debug("checking attribute " + a.getName());
}
if (overall.getAttribute(a.getName())==null ||
(overall.getAttribute(a.getName()).getStringValues().size() == 0 && overall.getAttribute(a.getName()).getBinaryValues().size() == 0)) {
if (log.isDebugEnabled()) {
log.debug("adding " + a.getName());
}
overall.addAttribute(a);
}
}
// Add the DN to the returned attributes.
overall.getAttribute("dn").addStringValue(si.getDn());
}
return overall;
} finally {
if (log.isDebugEnabled()) {
log.debug(SubjectUtils.mapToString(debugLog));
}
}
}
/**
* Escape a search filter to prevent LDAP injection.
* From http://www.owasp.org/index.php/Preventing_LDAP_Injection_in_Java
*
* @param filter
* @return escaped filter
*/
protected String escapeSearchFilter(String filter) {
//From RFC 2254
String escapedStr = new String(filter);
// note, these are regexes, so thats why there is an extra slash
escapedStr = escapedStr.replaceAll("\\\\","\\\\5c");
// We want people to be able to use wildcards.
// escapedStr = escapedStr.replaceAll("\\*","\\\\2a");
escapedStr = escapedStr.replaceAll("\\(","\\\\28");
escapedStr = escapedStr.replaceAll("\\)","\\\\29");
escapedStr = escapedStr.replaceAll("\\"+Character.toString('\u0000'), "\\\\00");
return escapedStr;
}
/**
* @see edu.internet2.middleware.subject.Source#checkConfig()
*/
public void checkConfig() {
}
/**
* @see edu.internet2.middleware.subject.Source#printConfig()
*/
public String printConfig() {
StringBuilder message = new StringBuilder("subject.properties ldap source id: ").append(this.getId()).append(": ");
message.append(ldapServerId);
return message.toString();
}
/**
* Set whether or not multiple results are allowed. Primarily for tests.
*
* @param multipleResults
*/
public void setMultipleResults(boolean multipleResults) {
this.multipleResults = multipleResults;
}
/**
* max Page size
* @return the maxPage
*/
public Integer getMaxPage() {
return this.maxPage;
}
}
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