trying to decode DER application specific objects (based on patch and test from #36)

Author: kares

src/main/java/org/jruby/ext/openssl/ASN1.java

@@ -66,6 +66,7 @@
 import org.bouncycastle.asn1.BERSequenceGenerator;
 import org.bouncycastle.asn1.BERSet;
 import org.bouncycastle.asn1.BERTags;
+import org.bouncycastle.asn1.DERApplicationSpecific;
 import org.bouncycastle.asn1.DERBMPString;
 import org.bouncycastle.asn1.DERBoolean;
 import org.bouncycastle.asn1.DEREnumerated;
@@ -1093,6 +1094,18 @@ else if ( obj instanceof DERBMPString ) {
             );
         }
 
+        if ( obj instanceof DERApplicationSpecific ) {
+            final DERApplicationSpecific appSpecific = (DERApplicationSpecific) obj;
+            IRubyObject tag = runtime.newFixnum( appSpecific.getApplicationTag() );
+            IRubyObject tag_class = runtime.newSymbol("APPLICATION");
+            final ASN1Sequence sequence = (ASN1Sequence) appSpecific.getObject(SEQUENCE);
+            @SuppressWarnings("unchecked")
+            final RubyArray valArr = decodeObjects(context, ASN1, sequence.getObjects());
+            return ASN1.getClass("ASN1Data").callMethod(context, "new",
+                new IRubyObject[] { valArr, tag, tag_class }
+            );
+        }
+
         if ( obj instanceof ASN1Sequence ) {
             @SuppressWarnings("unchecked")
             RubyArray arr = decodeObjects(context, ASN1, ((ASN1Sequence) obj).getObjects());

src/test/ruby/test_asn1.rb

@@ -477,6 +477,32 @@ def test_decode_all
     end
   end
 
+  def test_decode_application_specific
+    raw = "0\x18\x02\x01\x01`\x13\x02\x01\x03\x04\to=Telstra\x80\x03ess"
+    asn1 = OpenSSL::ASN1.decode(raw)
+    pp asn1 if false
+
+    assert_equal OpenSSL::ASN1::Sequence, asn1.class
+    assert_equal 2, asn1.value.size
+    assert_equal OpenSSL::ASN1::Integer, asn1.value[0].class
+    assert_equal 1,  asn1.value[0].value
+    assert_equal OpenSSL::ASN1::ASN1Data, asn1.value[1].class
+    assert_equal :APPLICATION,  asn1.value[1].tag_class
+
+    asn1_data = asn1.value[1]
+    assert_equal 3, asn1_data.value.size
+    assert_equal OpenSSL::ASN1::Integer, asn1_data.value[0].class
+    assert_equal 3, asn1_data.value[0].value
+    assert_equal OpenSSL::BN, asn1_data.value[0].value.class
+    assert_equal OpenSSL::ASN1::OctetString, asn1_data.value[1].class
+    assert_equal 'o=Telstra', asn1_data.value[1].value
+#    assert_equal OpenSSL::ASN1::ASN1Data, asn1_data.value[2].class
+#    assert_equal :CONTEXT_SPECIFIC,  asn1_data.value[2].tag_class
+#    assert_equal 'ess', asn1_data.value[2].value
+
+#    assert_equal raw, asn1.to_der
+  end
+
   private
 
   def assert_universal(tag, asn1, inf_len=false)