/**
* Reads the values of {@link #searchAttribute} from the supplied attributes and calls {@link
* #recursiveSearch} for each.
*
* @param conn to perform search operation on
* @param entry to read
* @param searchedDns list of DNs whose attributes have been read
* @throws LdapException if a search error occurs
*/
private void readSearchAttribute(
final Connection conn, final LdapEntry entry, final List<String> searchedDns)
throws LdapException {
if (entry != null) {
final LdapAttribute attr = entry.getAttribute(searchAttribute);
if (attr != null && !attr.isBinary()) {
for (String s : attr.getStringValues()) {
recursiveSearch(conn, s, entry, searchedDns);
}
}
}
}
/**
* Recursively gets the attribute(s) {@link #mergeAttributes} for the supplied dn and adds the
* values to the supplied attributes.
*
* @param conn to perform search operation on
* @param dn to get attribute(s) for
* @param entry to merge with
* @param searchedDns list of DNs that have been searched for
* @throws LdapException if a search error occurs
*/
private void recursiveSearch(
final Connection conn, final String dn, final LdapEntry entry, final List<String> searchedDns)
throws LdapException {
if (!searchedDns.contains(dn)) {
LdapEntry newEntry = null;
try {
final SearchOperation search = new SearchOperation(conn);
final SearchRequest sr = SearchRequest.newObjectScopeSearchRequest(dn, retAttrs);
final SearchResult result = search.execute(sr).getResult();
newEntry = result.getEntry(dn);
} catch (LdapException e) {
logger.warn("Error retrieving attribute(s): {}", Arrays.toString(retAttrs), e);
}
searchedDns.add(dn);
if (newEntry != null) {
// recursively search new attributes
readSearchAttribute(conn, newEntry, searchedDns);
// merge new attribute values
for (String s : mergeAttributes) {
final LdapAttribute newAttr = newEntry.getAttribute(s);
if (newAttr != null) {
final LdapAttribute oldAttr = entry.getAttribute(s);
if (oldAttr == null) {
entry.addAttribute(newAttr);
} else {
if (newAttr.isBinary()) {
for (byte[] value : newAttr.getBinaryValues()) {
oldAttr.addBinaryValue(value);
}
} else {
for (String value : newAttr.getStringValues()) {
oldAttr.addStringValue(value);
}
}
}
}
}
}
}
}
/**
* Reads a String value from the LdapEntry.
*
* @param entry the ldap entry
* @param attribute the attribute name
* @param nullValue the value which should be returning in case of a null value
* @return the string
*/
public static String getString(
final LdapEntry entry, final String attribute, final String nullValue) {
final LdapAttribute attr = entry.getAttribute(attribute);
if (attr == null) {
return nullValue;
}
String v = null;
if (attr.isBinary()) {
final byte[] b = attr.getBinaryValue();
v = new String(b, Charset.forName("UTF-8"));
} else {
v = attr.getStringValue();
}
if (StringUtils.isNotBlank(v)) {
return v;
}
return nullValue;
}
/**
* Handle a single attribute.
*
* @param conn the search was performed on
* @param request used to find the search entry
* @param attr to handle
* @throws LdapException if the LDAP returns an error
*/
protected void handleAttribute(
final Connection conn, final SearchRequest request, final LdapAttribute attr)
throws LdapException {
if (attr != null) {
attr.setName(handleAttributeName(conn, request, attr.getName()));
if (attr.isBinary()) {
final Set<byte[]> newValues = new HashSet<byte[]>(attr.size());
for (byte[] b : attr.getBinaryValues()) {
newValues.add(handleAttributeValue(conn, request, b));
}
attr.clear();
attr.addBinaryValues(newValues);
} else {
final Set<String> newValues = new HashSet<String>(attr.size());
for (String s : attr.getStringValues()) {
newValues.add(handleAttributeValue(conn, request, s));
}
attr.clear();
attr.addStringValues(newValues);
}
}
}
/** {@inheritDoc} */
@Override
protected void processAttributes(
final Connection conn, final SearchRequest request, final LdapEntry entry)
throws LdapException {
final Map<LdapAttribute, Matcher> matchingAttrs = new HashMap<LdapAttribute, Matcher>();
for (LdapAttribute la : entry.getAttributes()) {
// Match attribute ID against the pattern
final Matcher matcher = RANGE_PATTERN.matcher(la.getName());
// If the attribute ID matches the pattern
if (matcher.find()) {
matchingAttrs.put(la, matcher);
}
}
for (Map.Entry<LdapAttribute, Matcher> mEntry : matchingAttrs.entrySet()) {
final LdapAttribute la = mEntry.getKey();
final Matcher matcher = mEntry.getValue();
final String msg = String.format("attribute '%s' entry '%s'", la.getName(), entry.getDn());
// Determine the attribute name without the range syntax
final String attrTypeName = matcher.group(1);
logger.debug("Found Range option {}", msg);
if (attrTypeName == null || attrTypeName.isEmpty()) {
logger.error("Unable to determine the attribute type name for {}", msg);
throw new IllegalArgumentException(
"Unable to determine the attribute type name for " + msg);
}
// Create or update the attribute whose ID has the range syntax removed
LdapAttribute newAttr = entry.getAttribute(attrTypeName);
if (newAttr == null) {
newAttr = new LdapAttribute(la.getSortBehavior(), la.isBinary());
newAttr.setName(attrTypeName);
entry.addAttribute(newAttr);
}
// Copy values
if (la.isBinary()) {
newAttr.addBinaryValues(la.getBinaryValues());
} else {
newAttr.addStringValues(la.getStringValues());
}
// Remove original attribute with range syntax from returned attributes
entry.removeAttribute(la);
// If the attribute ID ends with * we're done, otherwise increment
if (!la.getName().endsWith(END_OF_RANGE)) {
// Determine next attribute ID
// CheckStyle:MagicNumber OFF
final int start = Integer.parseInt(matcher.group(2));
final int end = Integer.parseInt(matcher.group(3));
// CheckStyle:MagicNumber ON
final int diff = end - start;
final String nextAttrID =
String.format(RANGE_FORMAT, attrTypeName, end + 1, end + diff + 1);
// Search for next increment of values
logger.debug("Searching for '{}' to increment {}", nextAttrID, msg);
final SearchOperation search = new SearchOperation(conn);
final SearchRequest sr =
SearchRequest.newObjectScopeSearchRequest(entry.getDn(), new String[] {nextAttrID});
final SearchResult result = search.execute(sr).getResult();
// Add all attributes to the search result
entry.addAttributes(result.getEntry().getAttributes());
// Iterate
processAttributes(conn, request, entry);
}
}
}