[java-plugin-shibd] branch main updated: Add action for recovering resource from state token.

Scott Cantor cantor.2 at osu.edu
Tue Sep 23 19:19:21 UTC 2025


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scantor pushed a commit to branch main
in repository java-plugin-shibd.

View the commit online:
http://git.shibboleth.net/view/?p=java-plugin-shibd.git;a=commit;h=6d3ac5d427a83093b40b5243bd30e637344a4e8a

The following commit(s) were added to refs/heads/main by this push:
     new 6d3ac5d  Add action for recovering resource from state token.
6d3ac5d is described below

commit 6d3ac5d427a83093b40b5243bd30e637344a4e8a
Author: Scott Cantor <cantor.2 at osu.edu>
AuthorDate: Tue Sep 23 15:19:19 2025 -0400

    Add action for recovering resource from state token.
---
 .../AbstractTokenConsumerResponseAction.java       |  22 ++--
 .../sp/profile/impl/MapResourceToStateToken.java   |   2 +-
 .../sp/profile/impl/MapStateTokenToResource.java   | 118 +++++++++++++++++++++
 3 files changed, 131 insertions(+), 11 deletions(-)

diff --git a/sp-server-api/src/main/java/net/shibboleth/sp/profile/AbstractTokenConsumerResponseAction.java b/sp-server-api/src/main/java/net/shibboleth/sp/profile/AbstractTokenConsumerResponseAction.java
index 9f14159..a762a34 100644
--- a/sp-server-api/src/main/java/net/shibboleth/sp/profile/AbstractTokenConsumerResponseAction.java
+++ b/sp-server-api/src/main/java/net/shibboleth/sp/profile/AbstractTokenConsumerResponseAction.java
@@ -37,7 +37,6 @@ import net.shibboleth.shared.codec.EncodingException;
 import net.shibboleth.shared.logic.Constraint;
 import net.shibboleth.shared.primitive.LoggerFactory;
 import net.shibboleth.sp.context.AgentRequestContext;
-import net.shibboleth.sp.context.TokenConsumerContext;
 import net.shibboleth.sp.ddf.DDF;
 import net.shibboleth.sp.messaging.RemotedHttpServletRequestResponseContext;
 import net.shibboleth.sp.messaging.RemotedHttpServletResponse;
@@ -175,6 +174,11 @@ public abstract class AbstractTokenConsumerResponseAction extends AbstractApplic
     @Nullable protected byte[] recoverState(@Nonnull final ProfileRequestContext profileRequestContext,
             @Nonnull final AgentRequestContext agentRequestContext) {
         
+        // Short-circuit if already done.
+        if (agentRequestContext.getTargetURL() != null) {
+            return agentRequestContext.getTargetURL();
+        }
+        
         final String token = getStateToken(profileRequestContext);
         if (token == null) {
             log.debug("{} No state token found in protocol layer", getLogPrefix());
@@ -186,15 +190,13 @@ public abstract class AbstractTokenConsumerResponseAction extends AbstractApplic
             RemotedHttpServletRequestResponseContext.loadCurrent(agentRequestContext.getRemotedHttpServletRequest(),
                     agentRequestContext.getRemotedHttpServletResponse());
             
-            try {
-                final byte[] url = ensureApplication().getStateTokenManager().recoverFromStateToken(
-                        ensureAgent(), ensureApplication(), token);
-                log.debug("{} Requested resource recovered from state token: {}", getLogPrefix(), url);
-                ensureAgentRequestContext().setTargetURL(url);
-                return url;
-            } catch (final IOException e) {
-                log.warn("{} Exception recovering requested resource from state token", getLogPrefix(), e);
-            }
+            final byte[] url = ensureApplication().getStateTokenManager().recoverFromStateToken(
+                    ensureAgent(), ensureApplication(), token);
+            log.debug("{} Requested resource recovered from state token: {}", getLogPrefix(), url);
+            agentRequestContext.setTargetURL(url);
+            return url;
+        } catch (final IOException e) {
+            log.warn("{} Exception recovering requested resource from state token", getLogPrefix(), e);
         } finally {
             RemotedHttpServletRequestResponseContext.clearCurrent();
         }
diff --git a/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapResourceToStateToken.java b/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapResourceToStateToken.java
index a55d5f7..f8ef3a4 100644
--- a/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapResourceToStateToken.java
+++ b/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapResourceToStateToken.java
@@ -55,7 +55,7 @@ public class MapResourceToStateToken extends AbstractApplicationAction {
     /** Agent input. */
     @NonnullBeforeExec private DDF input;
 
-    /** Remoted request structure. */
+    /** Target resource to operate on. */
     @NonnullBeforeExec private byte[] target;
     
     /**
diff --git a/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapStateTokenToResource.java b/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapStateTokenToResource.java
new file mode 100644
index 0000000..408fb4f
--- /dev/null
+++ b/sp-server-impl/src/main/java/net/shibboleth/sp/profile/impl/MapStateTokenToResource.java
@@ -0,0 +1,118 @@
+/*
+ * 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 net.shibboleth.sp.profile.impl;
+
+import java.io.IOException;
+import java.util.function.Function;
+
+import javax.annotation.Nonnull;
+
+import org.opensaml.profile.action.EventIds;
+import org.opensaml.profile.context.ProfileRequestContext;
+import org.slf4j.Logger;
+
+import net.shibboleth.shared.annotation.constraint.NonnullAfterInit;
+import net.shibboleth.shared.component.ComponentInitializationException;
+import net.shibboleth.shared.logic.Constraint;
+import net.shibboleth.shared.primitive.LoggerFactory;
+import net.shibboleth.sp.context.AgentRequestContext;
+import net.shibboleth.sp.messaging.RemotedHttpServletRequestResponseContext;
+import net.shibboleth.sp.profile.AbstractApplicationAction;
+
+/**
+ * Action that maps a state token into a target/resource URL.
+ * 
+ * <p>The state token comes from a pluggable function.</p>
+ * 
+ * <p>The existence of {@link AgentRequestContext#getTargetURL()} will cause the action
+ * to be skipped but the absence of a state token will not result in failure.</p>
+ * 
+ * @event {@link EventIds#PROCEED_EVENT_ID}
+ * @event {@link EventIds#INVALID_MESSAGE}
+ * @event {@link EventIds#IO_ERROR}
+ */
+public class MapStateTokenToResource extends AbstractApplicationAction {
+    
+    /** Class logger. */
+    @Nonnull private Logger log = LoggerFactory.getLogger(MapStateTokenToResource.class);
+    
+    /** Lookup strategy for state token. */
+    @NonnullAfterInit private Function<ProfileRequestContext,String> stateTokenLookupStrategy;
+    
+    /**
+     * Sets the lookup strategy to obtain the protocol specific state token. 
+     *
+     * @param strategy lookup strategy
+     */
+    public void setStateTokenLookupStrategy(@Nonnull final Function<ProfileRequestContext,String> strategy) {
+        checkSetterPreconditions();
+        stateTokenLookupStrategy = Constraint.isNotNull(strategy, "State token lookup strategy cannot be null");
+    }
+    
+    /** {@inheritDoc} */
+    @Override
+    protected void doInitialize() throws ComponentInitializationException {
+        super.doInitialize();
+        
+        if (stateTokenLookupStrategy == null) {
+            throw new ComponentInitializationException("State token lookup strategy cannot be null");
+        }
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    protected boolean doPreExecute(@Nonnull final ProfileRequestContext profileRequestContext) {
+        if (!super.doPreExecute(profileRequestContext)) {
+            return false;
+        }
+        
+        if (ensureAgentRequestContext().getTargetURL() != null) {
+            log.debug("{} Target URL already populated, skipping state token processing", getLogPrefix());
+            return false;
+        }
+
+        return true;
+    }
+
+    /** {@inheritDoc} */
+    @Override
+    protected void doExecute(@Nonnull final ProfileRequestContext profileRequestContext) {
+
+        final AgentRequestContext agentRequestContext = ensureAgentRequestContext();
+
+        // We do the crazy stuff to accomodate cookie-backed state management
+        // (and to get the relevant state token in the first place).
+        try {
+            RemotedHttpServletRequestResponseContext.loadCurrent(agentRequestContext.getRemotedHttpServletRequest(),
+                    agentRequestContext.getRemotedHttpServletResponse());
+            
+            final String token = stateTokenLookupStrategy.apply(profileRequestContext);
+            if (token == null) {
+                log.debug("{} No state token returned from lookup strategy, nothing to do", getLogPrefix());
+                return;
+            }
+            
+            final byte[] target = ensureApplication().getStateTokenManager().recoverFromStateToken(
+                    ensureAgent(), ensureApplication(), token);
+            agentRequestContext.setTargetURL(target);
+            log.debug("{} Requested resource recovered from state token: {}", getLogPrefix(), target);
+        } catch (final IOException e) {
+            log.warn("{} Exception recovering requested resource from state token", getLogPrefix(), e);
+        } finally {
+            RemotedHttpServletRequestResponseContext.clearCurrent();
+        }
+    }
+
+}
\ No newline at end of file

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