[java-identity-provider] branch master updated: IDP-1494 - Login flow for proxied SAML authentication

Scott Cantor cantor.2 at osu.edu
Wed Nov 13 16:47:47 EST 2019


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View the commit online:
http://git.shibboleth.net/view/?p=java-identity-provider.git;a=commit;h=3ced1e90e4053f03aa8d18f0ff4d0a938406320a

The following commit(s) were added to refs/heads/master by this push:
       new  3ced1e9   IDP-1494 - Login flow for proxied SAML authentication
3ced1e9 is described below

commit 3ced1e90e4053f03aa8d18f0ff4d0a938406320a
Author: Scott Cantor <cantor.2 at osu.edu>
AuthorDate: Wed Nov 13 16:47:43 2019 -0500

    IDP-1494 - Login flow for proxied SAML authentication
    
    https://issues.shibboleth.net/jira/browse/IDP-1494
    
    Implement overrideable passthrough of ForceAuthn via
    default profile configuration.
---
 .../navigate/ForceAuthnProfileConfigPredicate.java |  5 +-
 .../system/conf/relying-party-mddriven.xml         |  4 +-
 .../logic/ProxyAwareForceAuthnPredicate.java       | 55 ++++++++++++++++++++++
 .../config/BrowserSSOProfileConfiguration.java     |  3 +-
 .../saml/saml2/profile/impl/AddAuthnRequest.java   |  5 +-
 5 files changed, 64 insertions(+), 8 deletions(-)

diff --git a/idp-authn-api/src/main/java/net/shibboleth/idp/authn/config/navigate/ForceAuthnProfileConfigPredicate.java b/idp-authn-api/src/main/java/net/shibboleth/idp/authn/config/navigate/ForceAuthnProfileConfigPredicate.java
index bbdb224..c59f6a5 100644
--- a/idp-authn-api/src/main/java/net/shibboleth/idp/authn/config/navigate/ForceAuthnProfileConfigPredicate.java
+++ b/idp-authn-api/src/main/java/net/shibboleth/idp/authn/config/navigate/ForceAuthnProfileConfigPredicate.java
@@ -27,10 +27,7 @@ import org.opensaml.profile.context.ProfileRequestContext;
 
 /**
  * A predicate that evaluates a {@link ProfileRequestContext} and determines whether forced
- * authentication should be set.
- * 
- * <p>For SAML 1 and SAML 2 SSO profiles, the "forceAuthn" flag is the setting governing
- * this decision. For other profiles, false is returned.</p> 
+ * authentication should be set based on the associated {@link AuthenticationProfileConfiguration}.
  * 
  * @since 3.4.0
  */
diff --git a/idp-conf/src/main/resources/system/conf/relying-party-mddriven.xml b/idp-conf/src/main/resources/system/conf/relying-party-mddriven.xml
index 77ff931..3a1ce24 100644
--- a/idp-conf/src/main/resources/system/conf/relying-party-mddriven.xml
+++ b/idp-conf/src/main/resources/system/conf/relying-party-mddriven.xml
@@ -381,7 +381,9 @@
                 <constructor-arg>
                     <bean parent="shibboleth.MDDrivenBoolProperty" p:propertyName="forceAuthn" />
                 </constructor-arg>
-                <constructor-arg value="false" />
+                <constructor-arg>
+                    <bean class="net.shibboleth.idp.saml.profile.config.logic.ProxyAwareForceAuthnPredicate" />
+                </constructor-arg>
             </bean>
         </property>
         <property name="checkAddressPredicate">
diff --git a/idp-saml-api/src/main/java/net/shibboleth/idp/saml/profile/config/logic/ProxyAwareForceAuthnPredicate.java b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/profile/config/logic/ProxyAwareForceAuthnPredicate.java
new file mode 100644
index 0000000..6ea6f2c
--- /dev/null
+++ b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/profile/config/logic/ProxyAwareForceAuthnPredicate.java
@@ -0,0 +1,55 @@
+/*
+ * 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 net.shibboleth.idp.saml.profile.config.logic;
+
+import java.util.function.Predicate;
+
+import javax.annotation.Nullable;
+
+import org.opensaml.profile.context.ProfileRequestContext;
+
+import net.shibboleth.idp.authn.context.AuthenticationContext;
+
+/**
+ * Implements a set of default logic for determining whether ForceAuthn should be applied.
+ * 
+ * <p>This operates in two different scenarios: ordinary use and proxy SAML authentication use, detectable
+ * by whether the input context is parent-less (the former), or the child of an {@link AuthenticationContext}.</p>
+ * 
+ * <p>In normal use, the value returned is false, requiring it to be explicitly superceded.</p>
+ * 
+ * <p>In proxy use, the value returned is false unless the parent context itself indicates the use of forced
+ * authentication, which was itself established in most cases from this function running previously or
+ * being overridden by a default. In other words, the proxy default is "passthrough" of the value.</p>
+ * 
+ * @since 4.0.0
+ */
+public class ProxyAwareForceAuthnPredicate implements Predicate<ProfileRequestContext> {
+    
+    
+    /** {@inheritDoc} */
+    public boolean test(@Nullable final ProfileRequestContext input) {
+     
+        if (input != null && input.getParent() instanceof AuthenticationContext) {
+            return ((AuthenticationContext) input.getParent()).isForceAuthn();
+        }
+        
+        return false;
+    }
+
+}
\ No newline at end of file
diff --git a/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
index c444d88..3f9765d 100644
--- a/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
+++ b/idp-saml-api/src/main/java/net/shibboleth/idp/saml/saml2/profile/config/BrowserSSOProfileConfiguration.java
@@ -31,6 +31,7 @@ import javax.annotation.Nullable;
 
 import net.shibboleth.idp.authn.config.AuthenticationProfileConfiguration;
 import net.shibboleth.idp.saml.authn.principal.AuthnContextClassRefPrincipal;
+import net.shibboleth.idp.saml.profile.config.logic.ProxyAwareForceAuthnPredicate;
 import net.shibboleth.utilities.java.support.annotation.constraint.NonNegative;
 import net.shibboleth.utilities.java.support.annotation.constraint.NonnullElements;
 import net.shibboleth.utilities.java.support.annotation.constraint.NotEmpty;
@@ -123,7 +124,7 @@ public class BrowserSSOProfileConfiguration extends AbstractSAML2ArtifactAwarePr
         setEncryptAssertions(true);
         resolveAttributesPredicate = Predicates.alwaysTrue();
         includeAttributeStatementPredicate = Predicates.alwaysTrue();
-        forceAuthnPredicate = Predicates.alwaysFalse();
+        forceAuthnPredicate = new ProxyAwareForceAuthnPredicate();
         checkAddressPredicate = Predicates.alwaysTrue();
         skipEndpointValidationWhenSignedPredicate = Predicates.alwaysFalse();
         proxiedAuthnInstantPredicate = Predicates.alwaysTrue();
diff --git a/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/saml2/profile/impl/AddAuthnRequest.java b/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/saml2/profile/impl/AddAuthnRequest.java
index 7201449..32777eb 100644
--- a/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/saml2/profile/impl/AddAuthnRequest.java
+++ b/idp-saml-impl/src/main/java/net/shibboleth/idp/saml/saml2/profile/impl/AddAuthnRequest.java
@@ -233,8 +233,9 @@ public class AddAuthnRequest extends AbstractAuthenticationAction {
             log.debug("{} No issuer value available, leaving Issuer unset", getLogPrefix());
         }
         
-        // ForceAuthn may come from request or config.
-        if (authenticationContext.isForceAuthn() || profileConfiguration.isForceAuthn(profileRequestContext)) {
+        // ForceAuthn comes from configuration, which by default will take into account the
+        // AuthenticationContext parent's state (but may be overridden by deployer).
+        if (profileConfiguration.isForceAuthn(profileRequestContext)) {
             log.debug("{} Setting ForceAuthn for SAML AuthnRequest", getLogPrefix());
             object.setForceAuthn(true);
         }

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