/**
* Retrieves the handles of the user.
*
* @param ctx The evaluation context, which will be used as key for the cache.
* @param userAccountId The id of the user account to get the handles for.
* @param attributeIdValue The value of the attribute id that is currently resolved.
* @return Returns the eSciDoc user handle of the subject (current user).
* @throws WebserverSystemException Thrown in case of an internal error.
* @throws UserAccountNotFoundException Thrown if no user account with provided id is found.
*/
private Set retrieveUserHandle(
final EvaluationCtx ctx, final String userAccountId, final String attributeIdValue)
throws WebserverSystemException, UserAccountNotFoundException {
Set<AttributeValue> result =
(Set<AttributeValue>) getFromCache(XmlUtility.NAME_HANDLE, null, null, userAccountId, ctx);
if (result == null) {
final List userHandles;
try {
userHandles = getUserAccountDao().retrieveUserLoginDataByUserId(userAccountId);
if (userHandles == null || userHandles.isEmpty()) {
assertUserAccount(
userAccountId, getUserAccountDao().retrieveUserAccountById(userAccountId));
}
} catch (final UserAccountNotFoundException e) {
throw e;
} catch (final Exception e) {
final String errorMsg =
StringUtility.format("Retrieving of attribute failed", attributeIdValue);
throw new WebserverSystemException(errorMsg, e);
}
result = new HashSet<AttributeValue>();
if (userHandles != null && !userHandles.isEmpty()) {
for (final Object userHandle : userHandles) {
final UserLoginData userLoginData = (UserLoginData) userHandle;
result.add(new StringAttribute(userLoginData.getHandle()));
}
}
putInCache(XmlUtility.NAME_HANDLE, null, null, userAccountId, ctx, result);
}
return result;
}
/**
* Asserts that the grant is provided, i.e. it is not <code>null</code>.
*
* @param grantId The grant id for which the grant should be provided (should exist).
* @param roleGrant The role grant to assert.
* @throws GrantNotFoundException Thrown if assertion fails.
*/
private static void assertGrant(final String grantId, final RoleGrant roleGrant)
throws GrantNotFoundException {
if (roleGrant == null) {
throw new GrantNotFoundException(
StringUtility.format("Grant with provided id does not exist", grantId));
}
}
/**
* Retrieve user-group grant from the system.
*
* @param ctx The evaluation context, which will be used as key for the cache.
* @param grantId The grant id.
* @return Returns the <code>RoleGrant</code> identified by the provided id.
* @throws WebserverSystemException Thrown in case of an internal error.
* @throws GrantNotFoundException Thrown if no grant with provided id exists.
*/
private RoleGrant getUserGroupGrant(final EvaluationCtx ctx, final String grantId)
throws WebserverSystemException, GrantNotFoundException {
final StringBuffer key = StringUtility.concatenateWithColon(XmlUtility.NAME_ID, grantId);
RoleGrant grant = (RoleGrant) RequestAttributesCache.get(ctx, key.toString());
if (grant == null) {
try {
grant = userGroupDao.retrieveGrant(grantId);
} catch (final Exception e) {
throw new WebserverSystemException(
StringUtility.format("Exception during retrieval of the grant", e.getMessage()), e);
}
}
assertGrant(grantId, grant);
RequestAttributesCache.put(ctx, key.toString(), grant);
return grant;
}
/**
* Asserts that the user account is provided, i.e. it is not {@code null}.
*
* @param userId The user id for which the account should be provided (should exist).
* @param userAccount The user account to assert.
* @throws UserAccountNotFoundException Thrown if assertion fails.
*/
private static void assertUserAccount(final String userId, final UserAccount userAccount)
throws UserAccountNotFoundException {
if (userAccount == null) {
throw new UserAccountNotFoundException(
StringUtility.format("User with provided id does not exist", userId));
}
}
/**
* Retrieve user-group grant from the system.
*
* @param ctx The evaluation context, which will be used as key for the cache.
* @param grantId The grant id.
* @return Returns the {@code RoleGrant} identified by the provided id.
* @throws WebserverSystemException Thrown in case of an internal error.
* @throws GrantNotFoundException Thrown if no grant with provided id exists.
*/
private RoleGrant getUserGroupGrant(final EvaluationCtx ctx, final String grantId)
throws WebserverSystemException, GrantNotFoundException {
RoleGrant grant = (RoleGrant) getFromCache(XmlUtility.NAME_ID, null, null, grantId, ctx);
if (grant == null) {
try {
grant = userGroupDao.retrieveGrant(grantId);
} catch (final Exception e) {
throw new WebserverSystemException(
StringUtility.format("Exception during retrieval of the grant", e.getMessage()), e);
}
}
assertGrant(grantId, grant);
putInCache(XmlUtility.NAME_ID, null, null, grantId, ctx, grant);
return grant;
}
/**
* Retrieve User Account from the system.
*
* @param ctx The evaluation context, which will be used as key for the cache.
* @param userAccountId The user account id.
* @return Returns the {@code UserAccount} identified by the provided id.
* @throws WebserverSystemException Thrown in case of an internal error.
* @throws UserAccountNotFoundException Thrown if no user account with provided id exists.
*/
private UserAccount retrieveUserAccount(final EvaluationCtx ctx, final String userAccountId)
throws WebserverSystemException, UserAccountNotFoundException {
UserAccount userAccount =
(UserAccount) getFromCache(XmlUtility.NAME_ID, null, null, userAccountId, ctx);
if (userAccount == null) {
try {
userAccount = getUserAccountDao().retrieveUserAccount(userAccountId);
} catch (final Exception e) {
throw new WebserverSystemException(
StringUtility.format("Exception during retrieval of the user account", e.getMessage()),
e);
}
}
assertUserAccount(userAccountId, userAccount);
putInCache(XmlUtility.NAME_ID, null, null, userAccountId, ctx, userAccount);
return userAccount;
}
/** See Interface for functional description. */
@Override
protected Object[] resolveLocalPart(
final String attributeIdValue,
final EvaluationCtx ctx,
final String resourceId,
final String resourceObjid,
final String resourceVersionNumber)
throws EscidocException {
// determine the id of the user account and to simplify the further
// work, replace INTERNAL_SUBJECT_ATTRIBUTE_PREFIX by
// INTERNAL_RESOURCE_USER_ACCOUNT_ATTRIBUTE_PREFIX in case of an
// subject attribute
final String internalAttributeIdValue;
final String userAccountId;
boolean isSubjectAttribute = false;
if (PATTERN_IS_SUBJECT_ATTRIBUTE_ID.matcher(attributeIdValue).find()) {
isSubjectAttribute = true;
userAccountId =
FinderModuleHelper.retrieveSingleSubjectAttribute(ctx, Constants.URI_SUBJECT_ID, true);
if (userAccountId == null) {
final StringBuilder errorMsg =
new StringBuilder("The subject (user) of the request cannot be ");
errorMsg.append("identified, the ");
errorMsg.append(Constants.URI_SUBJECT_ID);
errorMsg.append(" may not have been set.");
throw new WebserverSystemException(errorMsg.toString());
}
final Matcher matcher = PATTERN_SUBJECT_ATTRIBUTE_PREFIX.matcher(attributeIdValue);
internalAttributeIdValue = matcher.replaceFirst(AttributeIds.USER_ACCOUNT_ATTR_PREFIX);
} else {
userAccountId = FinderModuleHelper.getResourceId(ctx);
if (FinderModuleHelper.isNewResourceId(userAccountId)) {
return null;
}
internalAttributeIdValue = attributeIdValue;
}
// ask cache for previously cached results
EvaluationResult result =
(EvaluationResult)
getFromCache(
resourceId, resourceObjid, resourceVersionNumber, internalAttributeIdValue, ctx);
String resolvedAttributeIdValue = null;
if (result == null) {
// check if attributes of an anonymous user shall be retrieved
if (UserContext.isIdOfAnonymousUser(userAccountId)) {
// The anonymous user does not have an account, for each
// attribute the value of the anonymous identifier is returned.
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(
UserContext.ANONYMOUS_IDENTIFIER);
// the resolved id is set to the complete id, as no further
// resolving is possible.
resolvedAttributeIdValue = internalAttributeIdValue;
} else {
if (ATTR_USER_HANDLE.equals(internalAttributeIdValue)) {
final Set userHandles = retrieveUserHandle(ctx, userAccountId, internalAttributeIdValue);
result =
new EvaluationResult(new BagAttribute(Constants.URI_XMLSCHEMA_STRING, userHandles));
resolvedAttributeIdValue = ATTR_USER_HANDLE;
} else if (ATTR_USER_ROLE_SCOPE.matcher(internalAttributeIdValue).matches()) {
result = fetchRoleScopes(userAccountId, internalAttributeIdValue);
resolvedAttributeIdValue = internalAttributeIdValue;
} else if (ATTR_USER_GROUP_MEMBERSHIP.equals(internalAttributeIdValue)) {
result = fetchUserGroups(userAccountId);
resolvedAttributeIdValue = internalAttributeIdValue;
} else {
// Fetch the user account and return the appropriate value
final UserAccount userAccount;
try {
userAccount = retrieveUserAccount(ctx, userAccountId);
} catch (final UserAccountNotFoundException e) {
if (isSubjectAttribute) {
throw new UserAccountNotFoundException(
StringUtility.format(
"Account of subject not found.", userAccountId, e.getMessage()),
e);
} else {
throw e;
}
}
final Pattern p = PATTERN_PARSE_USER_ACCOUNT_ATTRIBUTE_ID;
final Matcher idMatcher = p.matcher(internalAttributeIdValue);
if (idMatcher.find()) {
resolvedAttributeIdValue = idMatcher.group(1);
if (userAccount != null) {
if (ATTR_USER_ID.equals(resolvedAttributeIdValue)) {
final String nextResourceId = userAccount.getId();
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(nextResourceId);
} else if (ATTR_USER_LOGIN_NAME.equals(resolvedAttributeIdValue)) {
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(
userAccount.getLoginname());
} else if (ATTR_USER_NAME.equals(resolvedAttributeIdValue)) {
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(
userAccount.getName());
} else if (ATTR_CREATED_BY.equals(resolvedAttributeIdValue)) {
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(
userAccount.getUserAccountByCreatorId().getId());
} else if (ATTR_MODIFIED_BY.equals(resolvedAttributeIdValue)) {
result =
CustomEvaluationResultBuilder.createSingleStringValueResult(
userAccount.getUserAccountByModifiedById().getId());
} else if (ATTR_USER_ORGANIZATIONAL_UNIT.equals(resolvedAttributeIdValue)) {
result = fetchUserAccountOus(userAccount, false);
} else if (ATTR_USER_ORGANIZATIONAL_UNIT_WITH_CHILDREN.equals(
resolvedAttributeIdValue)) {
result = fetchUserAccountOus(userAccount, true);
}
}
}
}
}
}
if (result == null) {
return null;
}
if (isSubjectAttribute) {
// revert previously Subject -> Resource change
final Matcher matcher =
PATTERN_USER_ACCOUNT_ATTRIBUTE_PREFIX.matcher(resolvedAttributeIdValue);
resolvedAttributeIdValue = matcher.replaceFirst(AttributeIds.SUBJECT_ATTR_PREFIX);
}
putInCache(resourceId, resourceObjid, resourceVersionNumber, attributeIdValue, ctx, result);
return new Object[] {result, resolvedAttributeIdValue};
}