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/*
 * Licensed to the University Corporation for Advanced Internet Development, 
 * Inc. (UCAID) under one or more contributor license agreements.  See the 
 * NOTICE file distributed with this work for additional information regarding
 * copyright ownership. The UCAID licenses this file to You 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 org.opensaml.saml.saml1.profile.impl;

import java.io.IOException;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;

import net.shibboleth.utilities.java.support.annotation.constraint.NonnullAfterInit;
import net.shibboleth.utilities.java.support.component.ComponentInitializationException;
import net.shibboleth.utilities.java.support.component.ComponentSupport;
import net.shibboleth.utilities.java.support.logic.Constraint;

import org.opensaml.messaging.context.navigate.MessageLookup;
import org.opensaml.profile.action.AbstractProfileAction;
import org.opensaml.profile.action.ActionSupport;
import org.opensaml.profile.action.EventIds;
import org.opensaml.profile.context.ProfileRequestContext;
import org.opensaml.profile.context.navigate.InboundMessageContextLookup;
import org.opensaml.profile.context.navigate.OutboundMessageContextLookup;
import org.opensaml.saml.common.binding.artifact.SAMLArtifactMap;
import org.opensaml.saml.common.binding.artifact.SAMLArtifactMap.SAMLArtifactMapEntry;
import org.opensaml.saml.common.messaging.context.navigate.SAMLMessageContextIssuerFunction;
import org.opensaml.saml.common.profile.SAMLEventIds;
import org.opensaml.saml.saml1.core.Assertion;
import org.opensaml.saml.saml1.core.AssertionArtifact;
import org.opensaml.saml.saml1.core.Request;
import org.opensaml.saml.saml1.core.Response;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.google.common.base.Function;
import com.google.common.base.Functions;

/**
 * Action that resolves SAML 1.x artifacts inside a {@link Request} located via a lookup strategy,
 * by default from the inbound message context, and maps them to the corresponding assertions.
 * 
 * 

The assertions are added to a {@link Response} located via a lookup strategy, by default * from the outbound message context.

* * @event {@link EventIds#PROCEED_EVENT_ID} * @event {@link EventIds#INVALID_MSG_CTX} * @event {@link EventIds#INVALID_PROFILE_CTX} * @event {@link SAMLEventIds#UNABLE_RESOLVE_ARTIFACT} */ public class ResolveArtifacts extends AbstractProfileAction { /** Class logger. */ @Nonnull private Logger log = LoggerFactory.getLogger(ResolveArtifacts.class); /** Strategy used to locate the {@link Request} to operate on. */ @Nonnull private Function requestLookupStrategy; /** Strategy used to locate the {@link Response} to operate on. */ @Nonnull private Function responseLookupStrategy; /** Strategy used to locate the issuer identity to validate against artifact entries. */ @NonnullAfterInit private Function issuerLookupStrategy; /** Strategy used to locate the requester identity to validate against artifact entries. */ @Nonnull private Function requesterLookupStrategy; /** Artifact mapper. */ @NonnullAfterInit private SAMLArtifactMap artifactMap; /** Request to process. */ @Nullable private Request request; /** Response to populate. */ @Nullable private Response response; /** Identity of issuer. */ @Nullable private String issuerId; /** Identity of requester. */ @Nullable private String requesterId; /** Constructor. */ public ResolveArtifacts() { requestLookupStrategy = Functions.compose(new MessageLookup<>(Request.class), new InboundMessageContextLookup()); responseLookupStrategy = Functions.compose(new MessageLookup<>(Response.class), new OutboundMessageContextLookup()); requesterLookupStrategy = Functions.compose(new SAMLMessageContextIssuerFunction(), new InboundMessageContextLookup()); } /** * Set the strategy used to locate the {@link Request} to operate on. * * @param strategy lookup strategy */ public synchronized void setRequestLookupStrategy( @Nonnull final Function strategy) { ComponentSupport.ifInitializedThrowUnmodifiabledComponentException(this); requestLookupStrategy = Constraint.isNotNull(strategy, "Request lookup strategy cannot be null"); } /** * Set the strategy used to locate the {@link Response} to operate on. * * @param strategy lookup strategy */ public synchronized void setResponseLookupStrategy( @Nonnull final Function strategy) { ComponentSupport.ifInitializedThrowUnmodifiabledComponentException(this); responseLookupStrategy = Constraint.isNotNull(strategy, "Response lookup strategy cannot be null"); } /** * Set the strategy used to locate the issuer's identity. * * @param strategy lookup strategy */ public synchronized void setIssuerLookupStrategy( @Nonnull final Function strategy) { ComponentSupport.ifInitializedThrowUnmodifiabledComponentException(this); issuerLookupStrategy = Constraint.isNotNull(strategy, "Issuer lookup strategy cannot be null"); } /** * Set the strategy used to locate the requester's identity. * * @param strategy lookup strategy */ public synchronized void setRequesterLookupStrategy( @Nonnull final Function strategy) { ComponentSupport.ifInitializedThrowUnmodifiabledComponentException(this); requesterLookupStrategy = Constraint.isNotNull(strategy, "Requester lookup strategy cannot be null"); } /** * Set the artifact map to use. * * @param map artifact map */ public synchronized void setArtifactMap(@Nonnull final SAMLArtifactMap map) { ComponentSupport.ifInitializedThrowUnmodifiabledComponentException(this); artifactMap = Constraint.isNotNull(map, "SAMLArtifactMap cannot be null"); } /** {@inheritDoc} */ @Override protected void doInitialize() throws ComponentInitializationException { super.doInitialize(); if (artifactMap == null) { throw new ComponentInitializationException("SAMLArtifactMap cannot be null"); } else if (issuerLookupStrategy == null) { throw new ComponentInitializationException("Issuer lookup strategy cannot be null"); } } /** {@inheritDoc} */ @Override protected boolean doPreExecute(@Nonnull final ProfileRequestContext profileRequestContext) { request = requestLookupStrategy.apply(profileRequestContext); if (request == null) { log.debug("{} No request located", getLogPrefix()); ActionSupport.buildEvent(profileRequestContext, EventIds.INVALID_MSG_CTX); return false; } else if (request.getAssertionArtifacts().isEmpty()) { log.debug("{} No AssertionArtifact elements found in request, nothing to do", getLogPrefix()); ActionSupport.buildEvent(profileRequestContext, EventIds.INVALID_MSG_CTX); return false; } response = responseLookupStrategy.apply(profileRequestContext); if (response == null) { log.debug("{} No response located", getLogPrefix()); ActionSupport.buildEvent(profileRequestContext, EventIds.INVALID_MSG_CTX); return false; } issuerId = issuerLookupStrategy.apply(profileRequestContext); if (issuerId == null) { log.debug("{} No issuer identity located", getLogPrefix()); ActionSupport.buildEvent(profileRequestContext, EventIds.INVALID_PROFILE_CTX); return false; } requesterId = requesterLookupStrategy.apply(profileRequestContext); if (requesterId == null) { log.debug("{} No requester identity located", getLogPrefix()); ActionSupport.buildEvent(profileRequestContext, EventIds.INVALID_MSG_CTX); return false; } return super.doPreExecute(profileRequestContext); } /** {@inheritDoc} */ @Override protected void doExecute(@Nonnull final ProfileRequestContext profileRequestContext) { boolean success = true; try { for (final AssertionArtifact artifact : request.getAssertionArtifacts()) { final SAMLArtifactMapEntry entry = artifactMap.get(artifact.getAssertionArtifact()); if (entry == null) { log.warn("{} Unresolvable AssertionArtifact '{}' from relying party '{}'", getLogPrefix(), artifact.getAssertionArtifact(), requesterId); success = false; break; } artifactMap.remove(artifact.getAssertionArtifact()); if (!entry.getIssuerId().equals(issuerId)) { log.warn("{} Artifact issuer mismatch, issued by '{}' but IdP has entityID of '{}'", getLogPrefix(), entry.getIssuerId(), issuerId); success = false; break; } else if (!entry.getRelyingPartyId().equals(requesterId)) { log.warn("{} Artifact relying party mismatch, issued to '{}' but requested by '{}'", getLogPrefix(), entry.getRelyingPartyId(), requesterId); success = false; break; } else if (!(entry.getSamlMessage() instanceof Assertion)) { log.warn("{} Artifact '{}' resolved to a non-Assertion object", getLogPrefix(), artifact.getAssertionArtifact()); success = false; break; } response.getAssertions().add((Assertion) entry.getSamlMessage()); } } catch (final IOException e) { log.error("{} Error resolving artifact", getLogPrefix(), e); success = false; } if (!success) { response.getAssertions().clear(); // Make sure we remove everything requested. for (final AssertionArtifact artifact : request.getAssertionArtifacts()) { try { artifactMap.remove(artifact.getAssertionArtifact()); } catch (final IOException e) { log.error("{} Error removing mapping for artifact '{}'", getLogPrefix(), artifact.getAssertionArtifact()); } } ActionSupport.buildEvent(profileRequestContext, SAMLEventIds.UNABLE_RESOLVE_ARTIFACT); } } }




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