/
PolicyRuleProcessor.java
828 lines (765 loc) · 40.4 KB
/
PolicyRuleProcessor.java
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/**
* Copyright (c) 2017 Evolveum
*
* 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.
*/
package com.evolveum.midpoint.model.impl.lens.projector;
import java.util.*;
import java.util.stream.Collectors;
import javax.xml.namespace.QName;
import com.evolveum.midpoint.repo.common.expression.ExpressionUtil;
import com.evolveum.midpoint.repo.common.expression.ObjectDeltaObject;
import com.evolveum.midpoint.model.api.context.*;
import com.evolveum.midpoint.model.common.mapping.Mapping;
import com.evolveum.midpoint.model.common.mapping.MappingFactory;
import com.evolveum.midpoint.model.impl.lens.*;
import com.evolveum.midpoint.prism.*;
import com.evolveum.midpoint.prism.delta.*;
import com.evolveum.midpoint.prism.delta.builder.DeltaBuilder;
import com.evolveum.midpoint.prism.marshaller.QueryConvertor;
import com.evolveum.midpoint.prism.match.MatchingRuleRegistry;
import com.evolveum.midpoint.prism.path.ItemPath;
import com.evolveum.midpoint.prism.polystring.PolyString;
import com.evolveum.midpoint.schema.constants.ExpressionConstants;
import com.evolveum.midpoint.schema.constants.SchemaConstants;
import com.evolveum.midpoint.schema.util.ObjectTypeUtil;
import com.evolveum.midpoint.task.api.Task;
import com.evolveum.midpoint.util.DOMUtil;
import com.evolveum.midpoint.util.exception.*;
import com.evolveum.midpoint.xml.ns._public.common.common_3.*;
import com.evolveum.prism.xml.ns._public.query_3.SearchFilterType;
import com.evolveum.prism.xml.ns._public.types_3.EvaluationTimeType;
import com.evolveum.prism.xml.ns._public.types_3.ModificationTypeType;
import org.apache.commons.collections4.CollectionUtils;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.stereotype.Component;
import com.evolveum.midpoint.prism.query.ObjectFilter;
import com.evolveum.midpoint.prism.query.ObjectQuery;
import com.evolveum.midpoint.prism.query.builder.QueryBuilder;
import com.evolveum.midpoint.prism.query.builder.S_AtomicFilterExit;
import com.evolveum.midpoint.prism.xml.XsdTypeMapper;
import com.evolveum.midpoint.repo.api.RepositoryService;
import com.evolveum.midpoint.schema.result.OperationResult;
import com.evolveum.midpoint.schema.util.MiscSchemaUtil;
import com.evolveum.midpoint.util.logging.Trace;
import com.evolveum.midpoint.util.logging.TraceManager;
/**
* @author semancik
*
*/
@Component
public class PolicyRuleProcessor {
private static final Trace LOGGER = TraceManager.getTrace(PolicyRuleProcessor.class);
@Autowired private PrismContext prismContext;
@Autowired @Qualifier("cacheRepositoryService") private RepositoryService repositoryService;
@Autowired private MappingFactory mappingFactory;
@Autowired private MappingEvaluator mappingEvaluator;
@Autowired private MatchingRuleRegistry matchingRuleRegistry;
private static final QName CONDITION_OUTPUT_NAME = new QName(SchemaConstants.NS_C, "condition");
/**
* Evaluate the policies (policy rules, but also the legacy policies). Trigger the rules.
* But do not enforce anything and do not make any context changes.
*/
public <F extends FocusType> void processPolicies(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple,
OperationResult result) throws PolicyViolationException, SchemaException {
checkAssignmentRules(context, evaluatedAssignmentTriple, result);
checkExclusionsLegacy(context, evaluatedAssignmentTriple.getPlusSet(), evaluatedAssignmentTriple.getNonNegativeValues());
// in policy based situations, the comparison is not symmetric
checkExclusionsRuleBased(context, evaluatedAssignmentTriple.getPlusSet(), evaluatedAssignmentTriple.getPlusSet());
checkExclusionsRuleBased(context, evaluatedAssignmentTriple.getPlusSet(), evaluatedAssignmentTriple.getZeroSet());
checkExclusionsRuleBased(context, evaluatedAssignmentTriple.getZeroSet(), evaluatedAssignmentTriple.getPlusSet());
checkExclusionsRuleBased(context, evaluatedAssignmentTriple.getZeroSet(), evaluatedAssignmentTriple.getZeroSet());
checkAssigneeConstraints(context, evaluatedAssignmentTriple, result);
checkSecondaryConstraints(context, evaluatedAssignmentTriple, result);
}
private <F extends FocusType> void checkAssignmentRules(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple,
OperationResult result) throws PolicyViolationException, SchemaException {
checkAssignmentRules(context, evaluatedAssignmentTriple.getPlusSet(), PlusMinusZero.PLUS, result);
checkAssignmentRules(context, evaluatedAssignmentTriple.getMinusSet(), PlusMinusZero.MINUS, result);
}
private <F extends FocusType> void checkAssignmentRules(LensContext<F> context,
Collection<EvaluatedAssignmentImpl<F>> evaluatedAssignmentSet, PlusMinusZero whichSet,
OperationResult result) throws PolicyViolationException, SchemaException {
for (EvaluatedAssignmentImpl<F> evaluatedAssignment: evaluatedAssignmentSet) {
Collection<EvaluatedPolicyRule> policyRules = evaluatedAssignment.getThisTargetPolicyRules();
for (EvaluatedPolicyRule policyRule: policyRules) {
PolicyConstraintsType policyConstraints = policyRule.getPolicyConstraints();
if (policyConstraints == null) {
continue;
}
for (AssignmentPolicyConstraintType assignmentConstraint: policyConstraints.getAssignment()) {
if (matchesOperation(assignmentConstraint, whichSet)) {
List<QName> relationsToCheck = assignmentConstraint.getRelation().isEmpty() ?
Collections.singletonList(null) : assignmentConstraint.getRelation();
for (QName constraintRelation : relationsToCheck) {
if (MiscSchemaUtil.compareRelation(constraintRelation, evaluatedAssignment.getRelation())) {
EvaluatedPolicyRuleTrigger trigger = new EvaluatedPolicyRuleTrigger<>(
PolicyConstraintKindType.ASSIGNMENT,
assignmentConstraint, "Assignment of " + evaluatedAssignment.getTarget());
evaluatedAssignment.triggerConstraint(policyRule, trigger);
}
}
}
}
}
}
}
private boolean matchesOperation(AssignmentPolicyConstraintType constraint, PlusMinusZero whichSet) {
List<ModificationTypeType> operations = constraint.getOperation();
if (operations.isEmpty()) {
return true;
}
switch (whichSet) {
case PLUS: return operations.contains(ModificationTypeType.ADD);
case MINUS: return operations.contains(ModificationTypeType.DELETE);
case ZERO: return operations.contains(ModificationTypeType.REPLACE);
default: throw new IllegalArgumentException("whichSet: " + whichSet);
}
}
private <F extends FocusType> void checkExclusionsLegacy(LensContext<F> context, Collection<EvaluatedAssignmentImpl<F>> assignmentsA,
Collection<EvaluatedAssignmentImpl<F>> assignmentsB) throws PolicyViolationException {
for (EvaluatedAssignmentImpl<F> assignmentA: assignmentsA) {
for (EvaluatedAssignmentImpl<F> assignmentB: assignmentsB) {
if (assignmentA == assignmentB) {
continue; // Same thing, this cannot exclude itself
}
for (EvaluatedAssignmentTargetImpl eRoleA : assignmentA.getRoles().getAllValues()) {
if (eRoleA.appliesToFocus()) {
for (EvaluatedAssignmentTargetImpl eRoleB : assignmentB.getRoles().getAllValues()) {
if (eRoleB.appliesToFocus()) {
checkExclusionLegacy(assignmentA, assignmentB, eRoleA, eRoleB);
}
}
}
}
}
}
}
private <F extends FocusType> void checkExclusionLegacy(EvaluatedAssignmentImpl<F> assignmentA, EvaluatedAssignmentImpl<F> assignmentB,
EvaluatedAssignmentTargetImpl roleA, EvaluatedAssignmentTargetImpl roleB) throws PolicyViolationException {
checkExclusionOneWayLegacy(assignmentA, assignmentB, roleA, roleB);
checkExclusionOneWayLegacy(assignmentB, assignmentA, roleB, roleA);
}
private <F extends FocusType> void checkExclusionOneWayLegacy(EvaluatedAssignmentImpl<F> assignmentA, EvaluatedAssignmentImpl<F> assignmentB,
EvaluatedAssignmentTargetImpl roleA, EvaluatedAssignmentTargetImpl roleB) throws PolicyViolationException {
for (ExclusionPolicyConstraintType exclusionA : roleA.getExclusions()) {
checkAndTriggerExclusionConstraintViolationLegacy(assignmentA, assignmentB, roleA, roleB, exclusionA);
}
}
private <F extends FocusType> void checkAndTriggerExclusionConstraintViolationLegacy(EvaluatedAssignmentImpl<F> assignmentA,
@NotNull EvaluatedAssignmentImpl<F> assignmentB, EvaluatedAssignmentTargetImpl roleA, EvaluatedAssignmentTargetImpl roleB,
ExclusionPolicyConstraintType constraint)
throws PolicyViolationException {
ObjectReferenceType targetRef = constraint.getTargetRef();
if (roleB.getOid().equals(targetRef.getOid())) {
EvaluatedExclusionTrigger trigger = new EvaluatedExclusionTrigger(
constraint, "Violation of SoD policy: " + roleA.getTarget() + " excludes " + roleB.getTarget() +
", they cannot be assigned at the same time", assignmentB,
roleA.getTarget() != null ? roleA.getTarget().asObjectable() : null,
roleB.getTarget() != null ? roleB.getTarget().asObjectable() : null,
roleA.getAssignmentPath(), roleB.getAssignmentPath());
assignmentA.triggerConstraint(null, trigger);
}
}
private <F extends FocusType> void checkExclusionsRuleBased(LensContext<F> context,
Collection<EvaluatedAssignmentImpl<F>> assignmentsA, Collection<EvaluatedAssignmentImpl<F>> assignmentsB)
throws PolicyViolationException, SchemaException {
for (EvaluatedAssignmentImpl<F> assignmentA : assignmentsA) {
checkExclusionsRuleBased(context, assignmentA, assignmentsB);
}
}
private <F extends FocusType> void checkExclusionsRuleBased(LensContext<F> context, EvaluatedAssignmentImpl<F> assignmentA,
Collection<EvaluatedAssignmentImpl<F>> assignmentsB) throws PolicyViolationException, SchemaException {
// We consider all policy rules, i.e. also from induced targets. (It is not possible to collect local
// rules for individual targets in the chain - rules are computed only for directly evaluated assignments.)
for (EvaluatedPolicyRule policyRule : assignmentA.getAllTargetsPolicyRules()) {
if (policyRule.getPolicyConstraints() == null || policyRule.getPolicyConstraints().getExclusion().isEmpty()) {
continue;
}
// In order to avoid false positives, we consider all targets from the current assignment as "allowed"
Set<String> allowedTargetOids = assignmentA.getNonNegativeTargets().stream()
.filter(t -> t.appliesToFocus())
.map(t -> t.getOid())
.collect(Collectors.toSet());
for (EvaluatedAssignmentImpl<F> assignmentB : assignmentsB) {
for (EvaluatedAssignmentTargetImpl targetB : assignmentB.getNonNegativeTargets()) {
if (!targetB.appliesToFocus() || allowedTargetOids.contains(targetB.getOid())) {
continue;
}
List<ExclusionPolicyConstraintType> exclusionConstraints = policyRule.getPolicyConstraints().getExclusion();
// TODO: implement proper AND logic between multiple constraints (MID-3959)
if (exclusionConstraints.size() > 1) {
throw new UnsupportedOperationException("Multiple exclusion constraints in the same policy rules are not supported yet.");
}
if (!exclusionConstraints.isEmpty()) {
ExclusionPolicyConstraintType exclusionConstraint = exclusionConstraints.iterator().next();
if (excludes(exclusionConstraint, targetB)) {
triggerExclusionConstraintViolation(assignmentA, assignmentB, targetB, exclusionConstraint, policyRule);
}
}
}
}
}
}
private boolean excludes(ExclusionPolicyConstraintType constraint, EvaluatedAssignmentTargetImpl targetAssignment) throws SchemaException {
if (constraint.getTargetRef() == null || targetAssignment.getOid() == null) {
return false; // shouldn't occur
} else if (constraint.getTargetRef() != null) {
ObjectReferenceType targetRef = constraint.getTargetRef();
if (targetRef.getOid() != null) {
return targetAssignment.getOid().equals(constraint.getTargetRef().getOid());
} else {
if (targetRef.getResolutionTime() == EvaluationTimeType.RUN) {
SearchFilterType filterType = targetRef.getFilter();
if (filterType == null) {
throw new SchemaException("No filter in exclusion reference");
}
QName typeQName = targetRef.getType();
@SuppressWarnings("rawtypes")
PrismObjectDefinition objDef = prismContext.getSchemaRegistry().findObjectDefinitionByType(typeQName);
ObjectFilter filter = QueryConvertor.parseFilter(filterType, objDef);
PrismObject<? extends FocusType> target = targetAssignment.getTarget();
return filter.match(target.getValue(), matchingRuleRegistry);
} else {
throw new SchemaException("No OID in exclusion reference");
}
}
} else {
throw new SchemaException("No target reference in exclusion");
}
}
private <F extends FocusType> void triggerExclusionConstraintViolation(EvaluatedAssignmentImpl<F> assignmentA,
@NotNull EvaluatedAssignmentImpl<F> assignmentB, EvaluatedAssignmentTargetImpl targetB,
ExclusionPolicyConstraintType constraint, EvaluatedPolicyRule policyRule)
throws PolicyViolationException {
AssignmentPath pathA = policyRule.getAssignmentPath();
AssignmentPath pathB = targetB.getAssignmentPath();
String infoA = computeAssignmentInfo(pathA, assignmentA.getTarget());
String infoB = computeAssignmentInfo(pathB, targetB.getTarget());
ObjectType objectA = getConflictingObject(pathA, assignmentA.getTarget());
ObjectType objectB = getConflictingObject(pathB, targetB.getTarget());
EvaluatedExclusionTrigger trigger = new EvaluatedExclusionTrigger(
constraint, "Violation of SoD policy: " + infoA + " excludes " + infoB +
", they cannot be assigned at the same time", assignmentB, objectA, objectB, pathA, pathB);
assignmentA.triggerConstraint(policyRule, trigger);
}
private ObjectType getConflictingObject(AssignmentPath path, PrismObject<?> defaultObject) {
if (path == null) {
return ObjectTypeUtil.toObjectable(defaultObject);
}
List<ObjectType> objects = path.getFirstOrderChain();
return objects.isEmpty() ?
ObjectTypeUtil.toObjectable(defaultObject) : objects.get(objects.size()-1);
}
private String computeAssignmentInfo(AssignmentPath path, PrismObject<?> defaultObject) {
if (path == null) {
return String.valueOf(defaultObject); // shouldn't occur
}
List<ObjectType> objects = path.getFirstOrderChain();
if (objects.isEmpty()) { // shouldn't occur
return String.valueOf(defaultObject);
}
ObjectType last = objects.get(objects.size()-1);
StringBuilder sb = new StringBuilder();
sb.append(last);
if (objects.size() > 1) {
sb.append(objects.stream()
.map(o -> PolyString.getOrig(o.getName()))
.collect(Collectors.joining("->", " (", ")")));
}
return sb.toString();
}
private <F extends FocusType> void checkAssigneeConstraints(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple,
OperationResult result) throws PolicyViolationException, SchemaException {
for (EvaluatedAssignmentImpl<F> assignment: evaluatedAssignmentTriple.union()) {
if (evaluatedAssignmentTriple.presentInPlusSet(assignment)) {
if (!assignment.isPresentInCurrentObject()) {
checkAssigneeConstraints(context, assignment, PlusMinusZero.PLUS, result); // only really new assignments
}
} else if (evaluatedAssignmentTriple.presentInZeroSet(assignment)) {
// No need to check anything here. Maintain status quo.
} else {
if (assignment.isPresentInCurrentObject()) {
checkAssigneeConstraints(context, assignment, PlusMinusZero.MINUS, result); // only assignments that are really deleted
}
}
}
}
private <F extends FocusType> void checkAssigneeConstraints(LensContext<F> context, EvaluatedAssignment<F> assignment, PlusMinusZero plusMinus, OperationResult result) throws PolicyViolationException, SchemaException {
PrismObject<?> target = assignment.getTarget();
if (target == null || !(target.asObjectable() instanceof AbstractRoleType)) {
return;
}
AbstractRoleType targetRole = (AbstractRoleType) target.asObjectable();
QName relation = ObjectTypeUtil.normalizeRelation(assignment.getRelation());
Collection<EvaluatedPolicyRule> policyRules = assignment.getThisTargetPolicyRules();
for (EvaluatedPolicyRule policyRule: policyRules) {
PolicyConstraintsType policyConstraints = policyRule.getPolicyConstraints();
if (policyConstraints == null) {
continue;
}
List<MultiplicityPolicyConstraintType> relevantMinAssignees = getForRelation(policyConstraints.getMinAssignees(), relation);
List<MultiplicityPolicyConstraintType> relevantMaxAssignees = getForRelation(policyConstraints.getMaxAssignees(), relation);
if (relevantMinAssignees.isEmpty() && relevantMaxAssignees.isEmpty()) {
continue;
}
String focusOid = null;
if (context.getFocusContext() != null) {
focusOid = context.getFocusContext().getOid();
}
int currentAssigneesExceptMyself = getNumberOfAssigneesExceptMyself(targetRole, focusOid, relation, result);
for (MultiplicityPolicyConstraintType constraint: relevantMinAssignees) {
Integer requiredMultiplicity = XsdTypeMapper.multiplicityToInteger(constraint.getMultiplicity());
if (requiredMultiplicity <= 0) {
continue; // unbounded or 0
}
// Complain only if the situation is getting worse
if (currentAssigneesExceptMyself < requiredMultiplicity && plusMinus == PlusMinusZero.MINUS) {
EvaluatedPolicyRuleTrigger<MultiplicityPolicyConstraintType> trigger =
new EvaluatedPolicyRuleTrigger<>(PolicyConstraintKindType.MIN_ASSIGNEES,
constraint, target+" requires at least " + requiredMultiplicity
+ " assignees with the relation of '" + relation.getLocalPart()
+ "'. The operation would result in "+currentAssigneesExceptMyself+" assignees.");
assignment.triggerConstraint(policyRule, trigger);
}
}
for (MultiplicityPolicyConstraintType constraint: relevantMaxAssignees) {
Integer requiredMultiplicity = XsdTypeMapper.multiplicityToInteger(constraint.getMultiplicity());
if (requiredMultiplicity < 0) {
continue; // unbounded
}
// Complain only if the situation is getting worse
if (currentAssigneesExceptMyself >= requiredMultiplicity && plusMinus == PlusMinusZero.PLUS) {
EvaluatedPolicyRuleTrigger<MultiplicityPolicyConstraintType> trigger =
new EvaluatedPolicyRuleTrigger<>(PolicyConstraintKindType.MAX_ASSIGNEES,
constraint, target + " requires at most " + requiredMultiplicity +
" assignees with the relation of '" + relation.getLocalPart()
+ "'. The operation would result in " + (currentAssigneesExceptMyself+1) + " assignees.");
assignment.triggerConstraint(policyRule, trigger);
}
}
}
}
private List<MultiplicityPolicyConstraintType> getForRelation(List<MultiplicityPolicyConstraintType> all, QName relation) {
return all.stream()
.filter(c -> containsRelation(c, relation))
.collect(Collectors.toList());
}
private boolean containsRelation(MultiplicityPolicyConstraintType constraint, QName relation) {
return getConstraintRelations(constraint).stream()
.anyMatch(constraintRelation -> ObjectTypeUtil.relationMatches(constraintRelation, relation));
}
private List<QName> getConstraintRelations(MultiplicityPolicyConstraintType constraint) {
return !constraint.getRelation().isEmpty() ?
constraint.getRelation() :
Collections.singletonList(SchemaConstants.ORG_DEFAULT);
}
/**
* Returns numbers of assignees with the given relation name.
*/
private int getNumberOfAssigneesExceptMyself(AbstractRoleType target, String selfOid, QName relation, OperationResult result)
throws SchemaException {
// TODO couldn't we simply use .relation(relation) ?
S_AtomicFilterExit q = QueryBuilder.queryFor(FocusType.class, prismContext)
.item(FocusType.F_ASSIGNMENT, AssignmentType.F_TARGET_REF).ref(
new PrismReferenceValue(target.getOid()).relation(PrismConstants.Q_ANY));
if (selfOid != null) {
q = q.and().not().id(selfOid);
}
ObjectQuery query = q.build();
List<PrismObject<FocusType>> assignees = repositoryService.searchObjects(FocusType.class, query, null, result);
int count = 0;
assignee: for (PrismObject<FocusType> assignee : assignees) {
for (AssignmentType assignment : assignee.asObjectable().getAssignment()) {
if (assignment.getTargetRef() != null
&& ObjectTypeUtil.relationsEquivalent(relation, assignment.getTargetRef().getRelation())) {
count++;
continue assignee;
}
}
}
return count;
}
public <F extends FocusType> boolean processPruning(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple,
OperationResult result) throws PolicyViolationException, SchemaException {
Collection<EvaluatedAssignmentImpl<F>> plusSet = evaluatedAssignmentTriple.getPlusSet();
if (plusSet == null) {
return false;
}
boolean needToReevaluateAssignments = false;
for (EvaluatedAssignmentImpl<F> plusAssignment: plusSet) {
for (EvaluatedPolicyRule targetPolicyRule: plusAssignment.getAllTargetsPolicyRules()) {
for (EvaluatedPolicyRuleTrigger trigger: targetPolicyRule.getTriggers()) {
if (!(trigger instanceof EvaluatedExclusionTrigger)) {
continue;
}
EvaluatedExclusionTrigger exclTrigger = (EvaluatedExclusionTrigger) trigger;
PolicyActionsType actions = targetPolicyRule.getActions();
if (actions == null || actions.getPrune() == null) {
continue;
}
EvaluatedAssignment<FocusType> conflictingAssignment = exclTrigger.getConflictingAssignment();
if (conflictingAssignment == null) {
throw new SystemException("Added assignment "+plusAssignment
+", the exclusion prune rule was triggered but there is no conflicting assignment in the trigger");
}
LOGGER.debug("Pruning assignment {} because it conflicts with added assignment {}", conflictingAssignment, plusAssignment);
PrismContainerValue<AssignmentType> assignmentValueToRemove = conflictingAssignment.getAssignmentType().asPrismContainerValue().clone();
PrismObjectDefinition<F> focusDef = context.getFocusContext().getObjectDefinition();
ContainerDelta<AssignmentType> assignmentDelta = ContainerDelta.createDelta(FocusType.F_ASSIGNMENT, focusDef);
assignmentDelta.addValuesToDelete(assignmentValueToRemove);
context.getFocusContext().swallowToSecondaryDelta(assignmentDelta);
needToReevaluateAssignments = true;
}
}
}
return needToReevaluateAssignments;
}
private <F extends FocusType> void checkSecondaryConstraints(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple, OperationResult result)
throws SchemaException, PolicyViolationException {
checkSecondaryConstraints(context, evaluatedAssignmentTriple.getPlusSet(), result);
checkSecondaryConstraints(context, evaluatedAssignmentTriple.getZeroSet(), result);
checkSecondaryConstraints(context, evaluatedAssignmentTriple.getMinusSet(), result);
}
private <F extends FocusType> void checkSecondaryConstraints(LensContext<F> context,
Collection<EvaluatedAssignmentImpl<F>> evaluatedAssignmentSet,
OperationResult result) throws PolicyViolationException, SchemaException {
for (EvaluatedAssignmentImpl<F> evaluatedAssignment : evaluatedAssignmentSet) {
checkSecondaryConstraints(evaluatedAssignment, result);
}
}
private <F extends FocusType> void checkSecondaryConstraints(EvaluatedAssignmentImpl<F> evaluatedAssignment,
OperationResult result) throws PolicyViolationException, SchemaException {
// Single pass only (for the time being)
// We consider only directly attached "situation" policy rules. In the future, we might configure this.
// So, if someone wants to report (forward) triggers from a target, he must ensure that a particular
// "situation" constraint is present directly on it.
for (EvaluatedPolicyRule policyRule: evaluatedAssignment.getThisTargetPolicyRules()) {
if (policyRule.getPolicyConstraints() == null) {
continue;
}
for (PolicySituationPolicyConstraintType situationConstraint : policyRule.getPolicyConstraints().getSituation()) {
Collection<EvaluatedPolicyRule> sourceRules =
selectTriggeredRules(evaluatedAssignment, situationConstraint.getSituation());
if (sourceRules.isEmpty()) {
continue;
}
String message =
sourceRules.stream()
.flatMap(r -> r.getTriggers().stream().map(EvaluatedPolicyRuleTrigger::getMessage))
.distinct()
.collect(Collectors.joining("; "));
EvaluatedSituationTrigger trigger = new EvaluatedSituationTrigger(situationConstraint, message, sourceRules);
evaluatedAssignment.triggerConstraint(policyRule, trigger);
}
}
}
private <F extends FocusType> Collection<EvaluatedPolicyRule> selectTriggeredRules(
EvaluatedAssignmentImpl<F> evaluatedAssignment, List<String> situations) {
// We consider all rules here, i.e. also those that are triggered on targets induced by this one.
// Decision whether to trigger such rules lies on "primary" policy constraints. (E.g. approvals would
// not trigger, whereas exclusions probably would.) Overall, our responsibility is simply to collect
// all triggered rules.
return evaluatedAssignment.getAllTargetsPolicyRules().stream()
.filter(r -> !r.getTriggers().isEmpty() && situations.contains(r.getPolicySituation()))
.collect(Collectors.toList());
}
@NotNull
private <F extends FocusType> List<ItemDelta<?, ?>> getAssignmentModificationDelta(
EvaluatedAssignmentImpl<F> evaluatedAssignment, List<EvaluatedPolicyRuleTriggerType> triggers) throws SchemaException {
Long id = evaluatedAssignment.getAssignmentType().getId();
if (id == null) {
throw new IllegalArgumentException("Assignment with no ID: " + evaluatedAssignment);
}
List<ItemDelta<?, ?>> deltas = new ArrayList<>();
Set<String> currentSituations = new HashSet<>(evaluatedAssignment.getAssignmentType().getPolicySituation());
Set<String> newSituations = new HashSet<>(evaluatedAssignment.getPolicySituations());
CollectionUtils.addIgnoreNull(deltas, createSituationDelta(
new ItemPath(FocusType.F_ASSIGNMENT, id, AssignmentType.F_POLICY_SITUATION), currentSituations, newSituations));
Set<EvaluatedPolicyRuleTriggerType> currentTriggers = new HashSet<>(evaluatedAssignment.getAssignmentType().getTrigger());
Set<EvaluatedPolicyRuleTriggerType> newTriggers = new HashSet<>(triggers);
CollectionUtils.addIgnoreNull(deltas, createTriggerDelta(
new ItemPath(FocusType.F_ASSIGNMENT, id, AssignmentType.F_TRIGGER), currentTriggers, newTriggers));
return deltas;
}
private <F extends FocusType> boolean shouldSituationBeUpdated(EvaluatedAssignment<F> evaluatedAssignment,
List<EvaluatedPolicyRuleTriggerType> triggers) {
Set<String> currentSituations = new HashSet<>(evaluatedAssignment.getAssignmentType().getPolicySituation());
Set<EvaluatedPolicyRuleTriggerType> currentTriggers = new HashSet<>(evaluatedAssignment.getAssignmentType().getTrigger());
// if the current situations different from the ones in the old assignment => update
// (provided that the situations in the assignment were _not_ changed directly via a delta!!!) TODO check this
if (!currentSituations.equals(new HashSet<>(evaluatedAssignment.getPolicySituations()))) {
LOGGER.trace("computed policy situations are different from the current ones");
return true;
}
if (!currentTriggers.equals(new HashSet<>(triggers))) {
LOGGER.trace("computed policy rules triggers are different from the current ones");
return true;
}
return false;
}
public <F extends FocusType> void storeFocusPolicySituation(LensContext<F> context, Task task, OperationResult result)
throws SchemaException {
LensFocusContext<F> focusContext = context.getFocusContext();
if (focusContext == null) {
return;
}
Set<String> currentSituations = focusContext.getObjectCurrent() != null ?
new HashSet<>(focusContext.getObjectCurrent().asObjectable().getPolicySituation()) : Collections.emptySet();
Set<String> newSituations = new HashSet<>(focusContext.getPolicySituations());
PropertyDelta<String> situationsDelta = createSituationDelta(
new ItemPath(FocusType.F_POLICY_SITUATION), currentSituations, newSituations);
if (situationsDelta != null) {
focusContext.swallowToProjectionWaveSecondaryDelta(situationsDelta);
}
}
@Nullable
private PropertyDelta<String> createSituationDelta(ItemPath path, Set<String> currentSituations, Set<String> newSituations)
throws SchemaException {
if (newSituations.equals(currentSituations)) {
return null;
}
@SuppressWarnings({ "unchecked", "raw" })
PropertyDelta<String> situationsDelta = (PropertyDelta<String>) DeltaBuilder.deltaFor(FocusType.class, prismContext)
.item(path)
.add(CollectionUtils.subtract(newSituations, currentSituations).toArray())
.delete(CollectionUtils.subtract(currentSituations, newSituations).toArray())
.asItemDelta();
situationsDelta.setEstimatedOldValues(PrismPropertyValue.wrap(currentSituations));
return situationsDelta;
}
private PropertyDelta<EvaluatedPolicyRuleTriggerType> createTriggerDelta(ItemPath path, Set<EvaluatedPolicyRuleTriggerType> currentTriggers, Set<EvaluatedPolicyRuleTriggerType> newTriggers)
throws SchemaException {
if (newTriggers.equals(currentTriggers)) {
return null;
}
@SuppressWarnings({ "unchecked", "raw" })
PropertyDelta<EvaluatedPolicyRuleTriggerType> triggersDelta = (PropertyDelta<EvaluatedPolicyRuleTriggerType>)
DeltaBuilder.deltaFor(FocusType.class, prismContext)
.item(path)
.replace(newTriggers.toArray()) // TODO or add + delete?
.asItemDelta();
triggersDelta.setEstimatedOldValues(PrismPropertyValue.wrap(currentTriggers));
return triggersDelta;
}
public <F extends FocusType> void addGlobalPoliciesToAssignments(LensContext<F> context,
DeltaSetTriple<EvaluatedAssignmentImpl<F>> evaluatedAssignmentTriple, Task task, OperationResult result)
throws SchemaException, ExpressionEvaluationException, ObjectNotFoundException {
PrismObject<SystemConfigurationType> systemConfiguration = context.getSystemConfiguration();
if (systemConfiguration == null) {
return;
}
// We need to consider object before modification here.
LensFocusContext<F> focusContext = context.getFocusContext();
PrismObject<F> focus = focusContext.getObjectCurrent();
if (focus == null) {
focus = focusContext.getObjectNew(); // only if it does not exist, let's try the new one
}
for (GlobalPolicyRuleType globalPolicyRule: systemConfiguration.asObjectable().getGlobalPolicyRule()) {
ObjectSelectorType focusSelector = globalPolicyRule.getFocusSelector();
if (!repositoryService.selectorMatches(focusSelector, focus, LOGGER,
"Global policy rule "+globalPolicyRule.getName()+" focus selector: ")) {
continue;
}
for (EvaluatedAssignmentImpl<F> evaluatedAssignment : evaluatedAssignmentTriple.getAllValues()) {
for (EvaluatedAssignmentTargetImpl target : evaluatedAssignment.getRoles().getNonNegativeValues()) {
if (!target.getAssignmentPath().last().isMatchingOrder() && !target.isDirectlyAssigned()) {
// This is to be thought out well. It is of no use to include global policy rules
// attached to meta-roles assigned to the role being assigned to the focus. But we certainly need to include rules
// attached to all directly assigned roles (because they might be considered for assignment) as
// well as all indirectly assigned roles but of the matching order (because of exclusion violation).
continue;
}
if (!repositoryService.selectorMatches(globalPolicyRule.getTargetSelector(),
target.getTarget(), LOGGER, "Global policy rule "+globalPolicyRule.getName()+" target selector: ")) {
continue;
}
if (!isRuleConditionTrue(globalPolicyRule, focus, evaluatedAssignment, context, task, result)) {
LOGGER.trace("Skipping global policy rule because the condition evaluated to false: {}", globalPolicyRule);
continue;
}
EvaluatedPolicyRule evaluatedRule = new EvaluatedPolicyRuleImpl(globalPolicyRule, target.getAssignmentPath().clone());
boolean direct = target.isDirectlyAssigned() || target.getAssignmentPath().getFirstOrderChain().size() == 1;
if (direct) {
evaluatedAssignment.addThisTargetPolicyRule(evaluatedRule);
} else {
evaluatedAssignment.addOtherTargetPolicyRule(evaluatedRule);
}
}
}
}
}
private <F extends FocusType> boolean isRuleConditionTrue(GlobalPolicyRuleType globalPolicyRule, PrismObject<F> focus,
EvaluatedAssignmentImpl<F> evaluatedAssignment, LensContext<F> context, Task task, OperationResult result)
throws ExpressionEvaluationException, ObjectNotFoundException, SchemaException {
MappingType condition = globalPolicyRule.getCondition();
if (condition == null) {
return true;
}
Mapping.Builder<PrismPropertyValue<Boolean>, PrismPropertyDefinition<Boolean>> builder = mappingFactory
.createMappingBuilder();
ObjectDeltaObject<F> focusOdo = new ObjectDeltaObject<>(focus, null, focus);
builder = builder.mappingType(condition)
.contextDescription("condition in global policy rule " + globalPolicyRule.getName())
.sourceContext(focusOdo)
.defaultTargetDefinition(
new PrismPropertyDefinitionImpl<>(CONDITION_OUTPUT_NAME, DOMUtil.XSD_BOOLEAN, prismContext))
.addVariableDefinition(ExpressionConstants.VAR_USER, focusOdo)
.addVariableDefinition(ExpressionConstants.VAR_FOCUS, focusOdo)
.addVariableDefinition(ExpressionConstants.VAR_TARGET, evaluatedAssignment.getTarget())
.addVariableDefinition(ExpressionConstants.VAR_ASSIGNMENT, evaluatedAssignment) // TODO: ok?
.rootNode(focusOdo);
Mapping<PrismPropertyValue<Boolean>, PrismPropertyDefinition<Boolean>> mapping = builder.build();
mappingEvaluator.evaluateMapping(mapping, context, task, result);
PrismValueDeltaSetTriple<PrismPropertyValue<Boolean>> conditionTriple = mapping.getOutputTriple();
return conditionTriple != null && ExpressionUtil.computeConditionResult(conditionTriple.getNonNegativeValues()); // TODO: null -> true (in the method) - ok?
}
public <F extends FocusType, T extends FocusType> void applyAssignmentSituationOnAdd(LensContext<F> context,
PrismObject<T> objectToAdd) throws SchemaException {
if (context.getEvaluatedAssignmentTriple() == null) {
return;
}
T focus = objectToAdd.asObjectable();
for (EvaluatedAssignmentImpl<?> evaluatedAssignment : context.getEvaluatedAssignmentTriple().getNonNegativeValues()) {
LOGGER.trace("Applying assignment situation on object ADD for {}", evaluatedAssignment);
List<EvaluatedPolicyRuleTriggerType> triggers = getTriggers(evaluatedAssignment);
if (!shouldSituationBeUpdated(evaluatedAssignment, triggers)) {
continue;
}
AssignmentType assignment = evaluatedAssignment.getAssignmentType();
if (assignment.getId() != null) {
ItemDelta.applyTo(getAssignmentModificationDelta(evaluatedAssignment, triggers), objectToAdd);
} else {
int i = focus.getAssignment().indexOf(assignment);
if (i < 0) {
throw new IllegalStateException("Assignment to be replaced not found in an object to add: " + assignment + " / " + objectToAdd);
}
copyPolicyData(focus.getAssignment().get(i), evaluatedAssignment, triggers);
}
}
}
private List<EvaluatedPolicyRuleTriggerType> getTriggers(EvaluatedAssignmentImpl<?> evaluatedAssignment) {
List<EvaluatedPolicyRuleTriggerType> rv = new ArrayList<>();
for (EvaluatedPolicyRule policyRule : evaluatedAssignment.getAllTargetsPolicyRules()) {
for (EvaluatedPolicyRuleTrigger<?> trigger : policyRule.getTriggers()) {
EvaluatedPolicyRuleTriggerType triggerType = trigger.toEvaluatedPolicyRuleTriggerType(policyRule).clone();
simplifyTrigger(triggerType);
rv.add(triggerType);
}
}
return rv;
}
private void simplifyTrigger(EvaluatedPolicyRuleTriggerType trigger) {
deleteAssignments(trigger.getAssignmentPath());
if (trigger instanceof EvaluatedExclusionTriggerType) {
EvaluatedExclusionTriggerType exclusionTrigger = (EvaluatedExclusionTriggerType) trigger;
deleteAssignments(exclusionTrigger.getConflictingObjectPath());
exclusionTrigger.setConflictingAssignment(null);
} else if (trigger instanceof EvaluatedSituationTriggerType) {
for (EvaluatedPolicyRuleType sourceRule : ((EvaluatedSituationTriggerType) trigger).getSourceRule()) {
for (EvaluatedPolicyRuleTriggerType sourceTrigger : sourceRule.getTrigger()) {
simplifyTrigger(sourceTrigger);
}
}
}
}
private void deleteAssignments(AssignmentPathType path) {
if (path == null) {
return;
}
for (AssignmentPathSegmentType segment : path.getSegment()) {
segment.setAssignment(null);
}
}
public <F extends FocusType, T extends ObjectType> ObjectDelta<T> applyAssignmentSituationOnModify(LensContext<F> context,
ObjectDelta<T> objectDelta) throws SchemaException {
if (context.getEvaluatedAssignmentTriple() == null) {
return objectDelta;
}
for (EvaluatedAssignmentImpl<?> evaluatedAssignment : context.getEvaluatedAssignmentTriple().getNonNegativeValues()) {
LOGGER.trace("Applying assignment situation on object MODIFY for {}", evaluatedAssignment);
List<EvaluatedPolicyRuleTriggerType> triggers = getTriggers(evaluatedAssignment);
if (!shouldSituationBeUpdated(evaluatedAssignment, triggers)) {
continue;
}
AssignmentType assignment = evaluatedAssignment.getAssignmentType();
if (assignment.getId() != null) {
objectDelta = swallow(context, objectDelta, getAssignmentModificationDelta(evaluatedAssignment, triggers));
} else {
if (objectDelta == null) {
throw new IllegalStateException("No object delta!");
}
ContainerDelta<Containerable> assignmentDelta = objectDelta.findContainerDelta(FocusType.F_ASSIGNMENT);
if (assignmentDelta == null) {
throw new IllegalStateException("Unnumbered assignment (" + assignment
+ ") couldn't be found in object delta (no assignment modification): " + objectDelta);
}
PrismContainerValue<AssignmentType> assignmentInDelta = assignmentDelta.findValueToAddOrReplace(assignment.asPrismContainerValue());
if (assignmentInDelta == null) {
throw new IllegalStateException("Unnumbered assignment (" + assignment
+ ") couldn't be found in object delta (no corresponding assignment value): " + objectDelta);
}
copyPolicyData(assignmentInDelta.asContainerable(), evaluatedAssignment, triggers);
}
}
return objectDelta;
}
private <T extends ObjectType, F extends FocusType> ObjectDelta<T> swallow(LensContext<F> context, ObjectDelta<T> objectDelta,
List<ItemDelta<?,?>> deltas) throws SchemaException {
if (deltas.isEmpty()) {
return objectDelta;
}
if (objectDelta == null) {
if (context.getFocusClass() == null) {
throw new IllegalStateException("No focus class in " + context);
}
if (context.getFocusContext() == null) {
throw new IllegalStateException("No focus context in " + context);
}
objectDelta = (ObjectDelta) new ObjectDelta<F>(context.getFocusClass(), ChangeType.MODIFY, prismContext);
objectDelta.setOid(context.getFocusContext().getOid());
}
objectDelta.swallow(deltas);
return objectDelta;
}
private void copyPolicyData(AssignmentType targetAssignment, EvaluatedAssignmentImpl<?> evaluatedAssignment,
List<EvaluatedPolicyRuleTriggerType> triggers) {
targetAssignment.getPolicySituation().clear();
targetAssignment.getPolicySituation().addAll(evaluatedAssignment.getPolicySituations());
targetAssignment.getTrigger().clear();
targetAssignment.getTrigger().addAll(triggers);
}
public <O extends ObjectType> ObjectDelta<O> applyAssignmentSituation(LensContext<O> context, ObjectDelta<O> focusDelta)
throws SchemaException {
if (context.getFocusClass() == null || !FocusType.class.isAssignableFrom(context.getFocusClass())) {
return focusDelta;
}
LensContext<? extends FocusType> contextOfFocus = (LensContext<FocusType>) context;
if (focusDelta != null && focusDelta.isAdd()) {
applyAssignmentSituationOnAdd(contextOfFocus, (PrismObject<? extends FocusType>) focusDelta.getObjectToAdd());
return focusDelta;
} else if (focusDelta == null || focusDelta.isModify()) {
return applyAssignmentSituationOnModify(contextOfFocus, focusDelta);
} else {
return focusDelta;
}
}
}