/**
* Performs an access check against all of the attributes of an entry. The attributes that fail
* access are removed from the entry. This method performs the processing needed for the
* filterEntry method processing.
*
* @param container The search or compare container which has all of the information needed to
* filter the attributes for this entry.
* @param filteredEntry The partially filtered search result entry being returned to the client.
*/
private void filterEntry(AciLDAPOperationContainer container, Entry filteredEntry) {
List<AttributeType> typeList = getAllAttrs(filteredEntry);
for (AttributeType attrType : typeList) {
if (container.hasAllUserAttributes() && !attrType.isOperational()) {
continue;
}
if (container.hasAllOpAttributes() && attrType.isOperational()) {
continue;
}
container.setCurrentAttributeType(attrType);
if (!accessAllowed(container)) {
filteredEntry.removeAttribute(attrType);
}
}
}
/**
* Check if access is allowed on an entry. Access is checked by iterating through each attribute
* of an entry, starting with the "objectclass" attribute type. If access is allowed on the entry
* based on one of it's attribute types, then a possible second access check is performed. This
* second check is only performed if an entry test ACI was found during the earlier successful
* access check. An entry test ACI has no "targetattrs" keyword, so allowing access based on an
* attribute type only would be incorrect.
*
* @param container ACI search container containing all of the information needed to check access.
* @return True if access is allowed.
*/
boolean accessAllowedEntry(AciLDAPOperationContainer container) {
boolean ret = false;
// set flag that specifies this is the first attribute evaluated
// in the entry
container.setIsFirstAttribute(true);
List<AttributeType> typeList = getAllAttrs(container.getResourceEntry());
for (AttributeType attrType : typeList) {
container.setCurrentAttributeType(attrType);
/*
* Check if access is allowed. If true, then check to see if an
* entry test rule was found (no targetattrs) during target match
* evaluation. If such a rule was found, set the current attribute
* type to "null" and check access again so that rule is applied.
*/
if (accessAllowed(container)) {
if (container.hasEntryTestRule()) {
container.setCurrentAttributeType(null);
if (!accessAllowed(container)) {
/*
* If we failed because of a deny permission-bind rule, we
* need to stop and return false.
*/
if (container.isDenyEval()) {
return false;
}
/*
* If we failed because there was no explicit allow rule,
* then we grant implicit access to the entry.
*/
}
}
return true;
}
}
return ret;
}
/** {@inheritDoc} */
@Override
public boolean maySend(DN dn, Operation operation, SearchResultReference reference) {
boolean ret;
if (!(ret = skipAccessCheck(operation))) {
Entry e = new Entry(dn, null, null, null);
AttributeBuilder builder = new AttributeBuilder(refAttrType, ATTR_REFERRAL_URL);
List<String> URLStrings = reference.getReferralURLs();
// Load the values, a bind rule might want to evaluate them.
for (String URLString : URLStrings) {
builder.add(AttributeValues.create(refAttrType, URLString));
}
e.addAttribute(builder.toAttribute(), null);
SearchResultEntry se = new SearchResultEntry(e);
AciLDAPOperationContainer operationContainer =
new AciLDAPOperationContainer(operation, (ACI_READ), se);
operationContainer.setCurrentAttributeType(refAttrType);
ret = accessAllowed(operationContainer);
}
return ret;
}
/**
* Check access on compare operations. Note that the attribute type is unavailable at this time,
* so this method partially parses the raw attribute string to get the base attribute type.
* Options are ignored.
*
* @param operation The compare operation to check access on.
* @return True if access is allowed.
*/
@Override
public boolean isAllowed(LocalBackendCompareOperation operation) {
AciLDAPOperationContainer operationContainer =
new AciLDAPOperationContainer(operation, ACI_COMPARE);
String baseName;
String rawAttributeType = operation.getRawAttributeType();
int semicolonPosition = rawAttributeType.indexOf(';');
if (semicolonPosition > 0) {
baseName = toLowerCase(rawAttributeType.substring(0, semicolonPosition));
} else {
baseName = toLowerCase(rawAttributeType);
}
AttributeType attributeType;
if ((attributeType = DirectoryServer.getAttributeType(baseName)) == null) {
attributeType = DirectoryServer.getDefaultAttributeType(baseName);
}
AttributeValue attributeValue =
AttributeValues.create(attributeType, operation.getAssertionValue());
operationContainer.setCurrentAttributeType(attributeType);
operationContainer.setCurrentAttributeValue(attributeValue);
return isAllowed(operationContainer, operation);
}
/**
* Test the attribute types of the search filter for access. This method supports the search
* right.
*
* @param container The container used in the access evaluation.
* @param filter The filter to check access on.
* @return True if all attribute types in the filter have access.
* @throws DirectoryException If there is a problem matching the entry using the provided filter.
*/
private boolean testFilter(AciLDAPOperationContainer container, SearchFilter filter)
throws DirectoryException {
boolean ret = true;
// If the resource entry has a dn equal to "cn=debugsearch" and it
// contains the special attribute type "debugsearchindex", then the
// resource entry is a pseudo entry created for debug purposes.
// Return true if that is the case.
if (debugSearchIndexDN.equals(container.getResourceDN())
&& container.getResourceEntry().hasAttribute(debugSearchIndex)) {
return true;
}
switch (filter.getFilterType()) {
case AND:
case OR:
{
for (SearchFilter f : filter.getFilterComponents()) {
if (!testFilter(container, f)) {
return false;
}
}
break;
}
case NOT:
{
SearchFilter f = filter.getNotComponent();
ret = testFilter(container, f);
break;
}
default:
{
AttributeType attrType = filter.getAttributeType();
container.setCurrentAttributeType(attrType);
ret = accessAllowed(container);
}
}
return ret;
}
/**
* Checks to see if a LDAP modification is allowed access.
*
* @param container The structure containing the LDAP modifications
* @param operation The operation to check modify privileges on. operation to check and the
* evaluation context to apply the check against.
* @param skipAccessCheck True if access checking should be skipped.
* @return True if access is allowed.
* @throws DirectoryException If a modified ACI could not be decoded.
*/
private boolean aciCheckMods(
AciLDAPOperationContainer container,
LocalBackendModifyOperation operation,
boolean skipAccessCheck)
throws DirectoryException {
Entry resourceEntry = container.getResourceEntry();
DN dn = resourceEntry.getDN();
List<Modification> modifications = operation.getModifications();
for (Modification m : modifications) {
Attribute modAttr = m.getAttribute();
AttributeType modAttrType = modAttr.getAttributeType();
if (modAttrType.equals(aciType)) {
/*
* Check that the operation has modify privileges if it contains
* an "aci" attribute type.
*/
if (!operation.getClientConnection().hasPrivilege(Privilege.MODIFY_ACL, operation)) {
Message message =
INFO_ACI_MODIFY_FAILED_PRIVILEGE.get(
String.valueOf(container.getResourceDN()),
String.valueOf(container.getClientDN()));
logError(message);
return false;
}
}
// This access check handles the case where all attributes of this
// type are being replaced or deleted. If only a subset is being
// deleted than this access check is skipped.
ModificationType modType = m.getModificationType();
if (((modType == ModificationType.DELETE) && modAttr.isEmpty())
|| ((modType == ModificationType.REPLACE) || (modType == ModificationType.INCREMENT))) {
/*
* Check if we have rights to delete all values of an attribute
* type in the resource entry.
*/
if (resourceEntry.hasAttribute(modAttrType)) {
container.setCurrentAttributeType(modAttrType);
List<Attribute> attrList = resourceEntry.getAttribute(modAttrType, modAttr.getOptions());
if (attrList != null) {
for (Attribute a : attrList) {
for (AttributeValue v : a) {
container.setCurrentAttributeValue(v);
container.setRights(ACI_WRITE_DELETE);
if (!skipAccessCheck && !accessAllowed(container)) {
return false;
}
}
}
}
}
}
if (!modAttr.isEmpty()) {
for (AttributeValue v : modAttr) {
container.setCurrentAttributeType(modAttrType);
switch (m.getModificationType()) {
case ADD:
case REPLACE:
container.setCurrentAttributeValue(v);
container.setRights(ACI_WRITE_ADD);
if (!skipAccessCheck && !accessAllowed(container)) {
return false;
}
break;
case DELETE:
container.setCurrentAttributeValue(v);
container.setRights(ACI_WRITE_DELETE);
if (!skipAccessCheck && !accessAllowed(container)) {
return false;
}
break;
case INCREMENT:
Entry modifiedEntry = operation.getModifiedEntry();
List<Attribute> modifiedAttrs =
modifiedEntry.getAttribute(modAttrType, modAttr.getOptions());
if (modifiedAttrs != null) {
for (Attribute attr : modifiedAttrs) {
for (AttributeValue val : attr) {
container.setCurrentAttributeValue(val);
container.setRights(ACI_WRITE_ADD);
if (!skipAccessCheck && !accessAllowed(container)) {
return false;
}
}
}
}
break;
}
/*
* Check if the modification type has an "aci" attribute type.
* If so, check the syntax of that attribute value. Fail the
* the operation if the syntax check fails.
*/
if (modAttrType.equals(aciType) || modAttrType.equals(globalAciType)) {
try {
// A global ACI needs a NULL DN, not the DN of the
// modification.
if (modAttrType.equals(globalAciType)) {
dn = DN.nullDN();
}
Aci.decode(v.getValue(), dn);
} catch (AciException ex) {
Message message =
WARN_ACI_MODIFY_FAILED_DECODE.get(String.valueOf(dn), ex.getMessage());
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
}
}
}
}
return true;
}