Paraglob prevents use of OpaqueVal in plugins

[J-Gras]

The introduction of paraglob seems to have introduced some dependencies that cannot be resolved properly when the OpaqueVal class is used in external plugins like bro-fuzzy-hashing or bro-lognorm. See J-Gras/bro-fuzzy-hashing#3.

[jsiwek]

Fix for this is pending in #603 (and will need to include it in a 3.0.1 patch release).

There's also just some changes in 3.0.x to the OpaqueVal API that you may need to update your plugin(s) for regardless. In case it helps, here's rough idea of what's needed to make bro-fuzzy-hashing compile:

diff --git a/src/FuzzyHashVal.cc b/src/FuzzyHashVal.cc
index 1beec16..7cdf6b0 100644
--- a/src/FuzzyHashVal.cc
+++ b/src/FuzzyHashVal.cc
@@ -4,6 +4,8 @@
 
 #include "FuzzyHashVal.h"
 
+#include <broker/error.hh>
+
 using namespace plugin::JGras_FuzzyHashing;
 
 FuzzyHashVal::FuzzyHashVal(OpaqueType* t) : HashVal(t)
@@ -150,3 +152,27 @@ StringVal* TLSHVal::DoGet()
 	const char* hash = tlsh->getHash();
 	return new StringVal(hash);
 	}
+
+broker::expected<broker::data> SSDeepVal::DoSerialize() const
+	{
+	// TODO: implement this
+	return broker::ec::invalid_data;
+	}
+
+bool SSDeepVal::DoUnserialize(const broker::data& data)
+	{
+	// TODO: implement this
+	return false;
+	}
+
+broker::expected<broker::data> TLSHVal::DoSerialize() const
+	{
+	// TODO: implement this
+	return broker::ec::invalid_data;
+	}
+
+bool TLSHVal::DoUnserialize(const broker::data& data)
+	{
+	// TODO: implement this
+	return false;
+	}
diff --git a/src/FuzzyHashVal.h b/src/FuzzyHashVal.h
index f7adca7..e638222 100644
--- a/src/FuzzyHashVal.h
+++ b/src/FuzzyHashVal.h
@@ -34,6 +34,7 @@ protected:
 	virtual StringVal* DoGet() override;
 
 	//DECLARE_SERIAL(SSDeepVal);
+    DECLARE_OPAQUE_VALUE(SSDeepVal);
 
 private:
 	fuzzy_state* state;
@@ -55,6 +56,7 @@ protected:
 
 	//DECLARE_SERIAL(TLSHVal);
 
+    DECLARE_OPAQUE_VALUE(TLSHVal);
 private:
 	Tlsh* tlsh;
 };

And implement the indicated functions if you want these values to be serializable/cloneable.