/**
* Evaluate an entry to be added to see if it has any "aci" attribute type. If it does, examines
* each "aci" attribute type value for syntax errors. All of the "aci" attribute type values must
* pass syntax check for the add operation to proceed. Any entry with an "aci" attribute type must
* have "modify-acl" privileges.
*
* @param entry The entry to be examined.
* @param operation The operation to to check privileges on.
* @param clientDN The authorization DN.
* @return True if the entry has no ACI attributes or if all of the "aci" attributes values pass
* ACI syntax checking.
* @throws DirectoryException If a modified ACI could not be decoded.
*/
private boolean verifySyntax(Entry entry, Operation operation, DN clientDN)
throws DirectoryException {
if (entry.hasOperationalAttribute(aciType)) {
/*
* Check that the operation has "modify-acl" privileges since the
* entry to be added has an "aci" attribute type.
*/
if (!operation.getClientConnection().hasPrivilege(Privilege.MODIFY_ACL, operation)) {
Message message =
INFO_ACI_ADD_FAILED_PRIVILEGE.get(
String.valueOf(entry.getDN()), String.valueOf(clientDN));
logError(message);
return false;
}
List<Attribute> attributeList = entry.getOperationalAttribute(aciType, null);
for (Attribute attribute : attributeList) {
for (AttributeValue value : attribute) {
try {
DN dn = entry.getDN();
Aci.decode(value.getValue(), dn);
} catch (AciException ex) {
Message message =
WARN_ACI_ADD_FAILED_DECODE.get(String.valueOf(entry.getDN()), ex.getMessage());
throw new DirectoryException(ResultCode.INVALID_ATTRIBUTE_SYNTAX, message);
}
}
}
}
return true;
}
/**
* Gathers all of the attribute types in an entry along with the "objectclass" attribute type in a
* List. The "objectclass" attribute is added to the list first so it is evaluated first.
*
* @param e Entry to gather the attributes for.
* @return List containing the attribute types.
*/
private List<AttributeType> getAllAttrs(Entry e) {
Map<AttributeType, List<Attribute>> attrMap = e.getUserAttributes();
Map<AttributeType, List<Attribute>> opAttrMap = e.getOperationalAttributes();
List<AttributeType> typeList = new LinkedList<AttributeType>();
Attribute attr = e.getObjectClassAttribute();
/*
* When a search is not all attributes returned, the "objectclass"
* attribute type is missing from the entry.
*/
if (attr != null) {
AttributeType ocType = attr.getAttributeType();
typeList.add(ocType);
}
typeList.addAll(attrMap.keySet());
typeList.addAll(opAttrMap.keySet());
return typeList;
}
/** {@inheritDoc} */
@Override
public boolean mayProxy(Entry proxyUser, Entry proxiedUser, Operation op) {
boolean ret;
if (!(ret = skipAccessCheck(proxyUser))) {
AuthenticationInfo authInfo =
new AuthenticationInfo(proxyUser, DirectoryServer.isRootDN(proxyUser.getDN()));
AciLDAPOperationContainer operationContainer =
new AciLDAPOperationContainer(op, proxiedUser, authInfo, ACI_PROXY);
ret = accessAllowedEntry(operationContainer);
}
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;
}
/**
* 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);
}
}
}
/**
* 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;
}