1 files changed, 146 insertions, 0 deletions
diff --git a/bcpkix/src/main/java/org/bouncycastle/cert/path/validations/CertificatePoliciesValidation.java b/bcpkix/src/main/java/org/bouncycastle/cert/path/validations/CertificatePoliciesValidation.java
new file mode 100644
index 0000000..ebaf989
--- /dev/null
+++ b/bcpkix/src/main/java/org/bouncycastle/cert/path/validations/CertificatePoliciesValidation.java
@@ -0,0 +1,146 @@
+package org.bouncycastle.cert.path.validations;
+
+import java.math.BigInteger;
+
+import org.bouncycastle.asn1.ASN1Integer;
+import org.bouncycastle.asn1.x509.Extension;
+import org.bouncycastle.asn1.x509.PolicyConstraints;
+import org.bouncycastle.cert.X509CertificateHolder;
+import org.bouncycastle.cert.path.CertPathValidation;
+import org.bouncycastle.cert.path.CertPathValidationContext;
+import org.bouncycastle.cert.path.CertPathValidationException;
+import org.bouncycastle.util.Memoable;
+
+public class CertificatePoliciesValidation
+    implements CertPathValidation
+{
+    private int              explicitPolicy;
+    private int              policyMapping;
+    private int              inhibitAnyPolicy;
+
+    CertificatePoliciesValidation(int pathLength)
+    {
+        this(pathLength, false, false, false);
+    }
+
+    CertificatePoliciesValidation(int pathLength, boolean isExplicitPolicyRequired, boolean isAnyPolicyInhibited, boolean isPolicyMappingInhibited)
+    {
+        //
+        // (d)
+        //
+
+        if (isExplicitPolicyRequired)
+        {
+            explicitPolicy = 0;
+        }
+        else
+        {
+            explicitPolicy = pathLength + 1;
+        }
+
+        //
+        // (e)
+        //
+        if (isAnyPolicyInhibited)
+        {
+            inhibitAnyPolicy = 0;
+        }
+        else
+        {
+            inhibitAnyPolicy = pathLength + 1;
+        }
+
+        //
+        // (f)
+        //
+        if (isPolicyMappingInhibited)
+        {
+            policyMapping = 0;
+        }
+        else
+        {
+            policyMapping = pathLength + 1;
+        }
+    }
+
+    public void validate(CertPathValidationContext context, X509CertificateHolder certificate)
+        throws CertPathValidationException
+    {
+        context.addHandledExtension(Extension.policyConstraints);
+        context.addHandledExtension(Extension.inhibitAnyPolicy);
+
+        if (!context.isEndEntity())
+        {
+            if (!ValidationUtils.isSelfIssued(certificate))
+            {
+                 //
+                // H (1), (2), (3)
+                //
+                explicitPolicy = countDown(explicitPolicy);
+                policyMapping = countDown(policyMapping);
+                inhibitAnyPolicy = countDown(inhibitAnyPolicy);
+
+                //
+                // I (1), (2)
+                //
+                PolicyConstraints policyConstraints = PolicyConstraints.fromExtensions(certificate.getExtensions());
+
+                if (policyConstraints != null)
+                {
+                    BigInteger requireExplicitPolicyMapping = policyConstraints.getRequireExplicitPolicyMapping();
+                    if (requireExplicitPolicyMapping != null)
+                    {
+                        if (requireExplicitPolicyMapping.intValue() < explicitPolicy)
+                        {
+                            explicitPolicy = requireExplicitPolicyMapping.intValue();
+                        }
+                    }
+
+                    BigInteger inhibitPolicyMapping = policyConstraints.getInhibitPolicyMapping();
+                    if (inhibitPolicyMapping != null)
+                    {
+                        if (inhibitPolicyMapping.intValue() < policyMapping)
+                        {
+                            policyMapping = inhibitPolicyMapping.intValue();
+                        }
+                    }
+                }
+
+                //
+                // J
+                //
+                Extension ext = certificate.getExtension(Extension.inhibitAnyPolicy);
+
+                if (ext != null)
+                {
+                    int extValue = ASN1Integer.getInstance(ext.getParsedValue()).getValue().intValue();
+
+                    if (extValue < inhibitAnyPolicy)
+                    {
+                        inhibitAnyPolicy = extValue;
+                    }
+                }
+            }
+        }
+    }
+
+    private int countDown(int policyCounter)
+    {
+        if (policyCounter != 0)
+        {
+            return policyCounter - 1;
+        }
+
+        return 0;
+    }
+
+    public Memoable copy()
+    {
+        return new CertificatePoliciesValidation(0);    // TODO:
+    }
+
+    public void reset(Memoable other)
+    {
+        CertificatePoliciesValidation v = (CertificatePoliciesValidation)other;      // TODO:
+    }
+}